WO2012160435A2 - Highly absorbent insole and its uses - Google Patents

Highly absorbent insole and its uses Download PDF

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Publication number
WO2012160435A2
WO2012160435A2 PCT/IB2012/000994 IB2012000994W WO2012160435A2 WO 2012160435 A2 WO2012160435 A2 WO 2012160435A2 IB 2012000994 W IB2012000994 W IB 2012000994W WO 2012160435 A2 WO2012160435 A2 WO 2012160435A2
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Prior art keywords
insole
layer
insole according
textile
layers
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PCT/IB2012/000994
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French (fr)
Portuguese (pt)
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WO2012160435A4 (en
WO2012160435A3 (en
Inventor
Rui Jorge DOS SANTOS RUSSO
Carla Alexandra CORREIA SANTOS
Carina Madalena MARTINS MACHADO
Tiago Sotto Mayor MOURA SANTOS
Isabel Maria FERREIRA GOMES
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Procalcado-Produtora De Componentes Para
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Publication of WO2012160435A2 publication Critical patent/WO2012160435A2/en
Publication of WO2012160435A3 publication Critical patent/WO2012160435A3/en
Publication of WO2012160435A4 publication Critical patent/WO2012160435A4/en

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
    • A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/10—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined specially adapted for sweaty feet; waterproof
    • A43B17/102—Moisture absorbing socks; Moisture dissipating socks

Definitions

  • the present invention relates to an insole with excellent foot perspiration absorption capacity.
  • the insole is removable and suitable for all types of footwear, from shoes, sports shoes, protective shoes and the like.
  • the insole of the present invention is composed of a multilayer structure, at least one of the highly hygroscopic layer, which is responsible for absorbing moisture from the foot.
  • This layer (s) are incorporated between materials which impart various properties to the insole, namely mechanical strength, abrasion resistance, shock absorption, among other properties.
  • Breathable and water vapor impermeable membranes are an alternative to achieve improvements in comfort from a moisture management standpoint. They have been the target of a multitude of applications (US 2007/0204482 Al, WO 2010/113112, WO 2010/044657, US 2009/0211119 Al, US 2009/7546697 B2), particularly in footwear, where they are applied to their different components. (insole, sole, lining, ). These membranes are sometimes combined with other components such as meshes, fabrics, nonwoven and nets of different materials and structures, giving the system better performance and strength.
  • This invention differs from existing solutions by combining materials only at the insole level. Note that the invention being an insole rather than a shoe, allows the wearer to wear it on any type of shoe, resulting in a shoe with excellent moisture management property and consequently improved comfort.
  • US 2010/7661204 B2, US 2008/0115385 A1, US 2009/7543398 B2, US 2003/6665959 BI and US 1995/5452525 also state that their functionality is applied to insoles. However, the combination of materials describing, impermeable and breathable membranes, absorbent layers applied to fabrics and nonwovens is different from that described in the insole of this invention.
  • EP0713658 discloses a multilayer insole for absorbing foot perspiration.
  • This multilayer consists of an upper layer consisting of, for example, polypropylene, an intermediate layer of GORETEX and a lower layer for absorption of perspiration.
  • US2004 / 0168355 discloses a multilayer composite material for liquid absorption.
  • the material may consist of layers and the intermediate absorbent layer comprising a microporous polyolefin or silica polyethylene structure.
  • the base materials are microporous membranes where water vapor diffusion occurs.
  • the insole of the present invention is comprised of a material having a high water vapor and liquid water absorption capacity, not just condensate water vapor permeation.
  • the remaining materials used in the insole of the present invention, polymeric nets, are open materials whose The main function, among others, is to serve as mechanical support of the absorbent layer (intermediate layer).
  • This invention relates to a high water absorbing insole (steam and liquid), lasting longer than one day.
  • the developed insole consists of a multilayer structure as illustrated in Figures 1 and 2.
  • the upper (1) and lower (3) layer of the structure consists of one or more layers of polymeric fiber / yarn textile netting.
  • the intermediate layer (2) is. consisting of one or more layers of an absorbent polymeric mantle.
  • another layer which may consist of a 3D textile material. Other layers may be added and should always be placed below the absorbent polymer layer (s) so as not to introduce additional resistance to water absorption.
  • the openings of textile nets may differ.
  • the nets In the upper layer (1), which will be in contact with the wearer's stocking, the nets may have a larger opening to increase contact between the sock and the absorbent mantle.
  • the lower nets 3 may have a smaller opening to increase the abrasion resistance of the assembly and at the same time make it difficult to transfer sweat to the shoes.
  • Upper nets (1) may consist of polymeric fibers / yarns
  • (3) may consist of polymeric fibers / yarns (monofilament or multifilament) polymer with a diameter between 0.015 and 0.040 mm with decitex between 330 and 2000.
  • These nets should be made of moisture-absorbing synthetic materials that are resistant to mold and bacteria to increase their durability. These fibers must have high abrasion resistance so as not to suffer mechanical wear or tear during use. In this regard it is important that the fiber has good elasticity and good wrinkle and crease resistance.
  • polymeric materials meet these requirements, such as PVC, PVDC, PU, among others.
  • the intermediate layer of the insole (2) may consist of one or more textile substrates (woven, knitted, non-woven) impregnated with materials with high absorption capacity. These materials, commonly referred to as superabsorbents, are hydrophilic macromolecular compounds capable of absorbing large volumes of water or aqueous solutions. Superabsorbents may be produced by polymerization of acrylic acid, acrylic esters, acrylamide and other unsaturated monomers. These materials have the particularity that they can retain in their molecular structure about 100 to 1000 g of water per gram of initially dry polymer, with greater or lesser retention capacity being associated with various structural factors.
  • the insole there may be yet another layer consisting of a material like a 3D textile mesh.
  • a material like a 3D textile mesh As its name implies, it is a three-dimensional mesh composed of two types of outer textile substrates, which are joined by spacer yarns. The most commonly used yarns in this type of mesh are polyester, polyamide and Kevlar.
  • the multifunctionality This layer lies in increased wearer comfort by cushioning, shock absorption, increased wear resistance by wearing the insole, increased breathability (favors air circulation) and redistribution of pressure exerted by the wearer. It is also noteworthy that because this mesh has high resilience, that is, regain its shape after compression, it is suitable for successive and constant uses of the insole.
  • insole of this invention may be provided with an antibacterial and / or antifungal coating, spray applied, ultrasonic spray, impregnation, and the like.
  • the constituent elements of the present invention may be assembled in the form of insole by seam, (thermo) bonding, ultrasonic bonding, radio frequency bonding, hot melt lamination or flat bed, among others.
  • Sweat in the sock as a result of the user's sweating, crosses the upper layer (1), which is comprised of one or more wide open polymeric textile nets, and is quickly absorbed by the intermediate layer (2) of the insole.
  • This process results in an increase in the volume of the absorbent layer (s) (middle layer of the insole (2)) without being perceived by the user as the textile webs surrounding the Absorbent layer (s) impart dimensional stability to the multilayer structure.
  • the absorption process is perfectly reversible, so it will be enough for the user to remove the insole from the shoe for a few hours for the moisture content of the insole to return to normal values (ie those that are in equilibrium with the relative humidity of the environment the insole is exposed).
  • the present invention relates to an insole comprising a multilayer structure comprising at least one hygroscopic layer consisting of one or more textile substrates impregnated with hydrophilic macromolecular materials.
  • the multilayer insole structure of the present invention further comprises an intermediate layer consisting of one or more layers of a hygroscopic polymeric mantle.
  • the thickness of the hygroscopic layer is between 0.5 and 5 mm.
  • the upper and lower layers of the multilayer structure are comprised of a textile mesh of polymeric fibers or yarns, the thickness of the layers of textile mesh being between 0, 3 and 3 mm.
  • the insole further comprises a layer consisting of a three-dimensional textile-like material below the intermediate hygroscopic layer, or a cork-film layer, the layer thickness being between 0.25 and 5 mm.
  • the insole upper layer nets have polymeric fibers or yarns between 0.020 and 0.060 mm in diameter with decitex between 830 and 3300, and the lower layer nets have polymeric fibers or yarns with a diameter between 0.015 and 0.40 mm with decitex between 330 and 2000.
  • the textile nets are polyvinyl chloride or polyvinylidene chloride or polyurethane and the three-dimensional textile mesh is polyester, polyamide or kevlar.
  • the insole of the present invention further comprises an antibacterial and / or antifungal coating.
  • Another object of the present invention is the method of obtaining the insole described above, wherein the antibacterial and / or antifungal coating is applied by spray, ultrasonic spray, or impregnation.
  • the insole is obtained by seam assembly, (thermo) bonding, ultrasonic bonding, radio frequency bonding, hot melt lamination or flat bed.
  • footwear comprising the insole described above and obtained by the method described above.
  • Figure 1 illustrates the upper part of an insole constructed in accordance with the invention described herein.
  • Figure 2 is an enlarged perspective view of the cross section of a straight insole.
  • Figure 3 shows the performance of the insole.

Abstract

The present invention relates to an insole having a high absorption capacity. The insole is formed by a multilayered structure, at least one of the layers being highly hygroscopic and having the function of absorbing the humidity from the foot. This layer or these layers are incorporated between materials that impart various properties to the insole, namely mechanical resistance, abrasion resistance, shock-absorption, inter alia. The insole according to the present invention is removable and suitable for all types of footwear, including shoes, sports shoes, protective shoes and the like.

Description

Descrição  description
"Palmilha altamente absorvente e suas aplicações" "Highly absorbent insole and its applications"
Domínio da invenção Field of the invention
A presente invenção refere-se a uma palmilha com excelente capacidade de absorção da transpiração do pé . A palmilha é removível e adaptada para todo o tipo de calçado, desde sapatos, calçado desportivo, calçado de protecção e semelhante . The present invention relates to an insole with excellent foot perspiration absorption capacity. The insole is removable and suitable for all types of footwear, from shoes, sports shoes, protective shoes and the like.
A palmilha da presente invenção é composta por uma estrutura multicamada, sendo pelo menos uma das camada altamente higroscópica, camada esta responsável por absorver a humidade do pé. Esta(s) camada (s) está(ão) incorporada ( s ) entre materiais que conferem várias propriedades à palmilha, nomeadamente resistência mecânica, resistência à abrasão, absorção de choques, entre outras propriedades . The insole of the present invention is composed of a multilayer structure, at least one of the highly hygroscopic layer, which is responsible for absorbing moisture from the foot. This layer (s) are incorporated between materials which impart various properties to the insole, namely mechanical strength, abrasion resistance, shock absorption, among other properties.
Estado da Técnica State of the Art
Com o intuito de melhorar o conforto dos pés, muitos desenvolvimentos têm sido feitos ao longo dos anos ao nível da respirabilidade e gestão de humidade. Têm sido implementadas melhorias ao nível dos materiais utilizados (mais leves, confortáveis, respiráveis, impermeáveis), melhorias introduzidas ao nível da palmilha, da sola e do sapato como um todo. Alguns exemplos são a aplicação de membranas, camadas impermeáveis e respiráveis, espumas hidrofíliças , polímeros absorventes e a presença de furos nas solas e palmilhas. In order to improve foot comfort, many developments have been made over the years in terms of breathability and moisture management. Improvements have been made in the materials used (lighter, comfortable, breathable, waterproof), improvements made in the insole, sole and shoe as a whole. Examples are the application of membranes, impermeable and breathable layers, hydrophilic foams, absorbent polymers and the presence of holes in the soles and insoles.
1 1
CÓPIA DE CONFIRMAÇÃO Ao nível da gestão de humidade, diversas patentes descrevem apenas uma estrutura genérica como responsável pela absorção de humidade. Estas estruturas variam na sua composição. Em alguns casos são incorporados polímeros superabsorventes (US 1995/5433994 A, US 2005/0118916 Al, US 2005/6974890 BI, US 2005/6930221 BI) ou hidrogéis protegidos por uma matriz de fibras hidrofílicas (US 1999/5972487 A) . CONFIRMATION COPY In terms of moisture management, several patents describe only one generic structure responsible for moisture absorption. These structures vary in their composition. In some cases superabsorbent polymers (US 1995/5433994 A, US 2005/0118916 Al, US 2005/6974890 BI, US 2005/6930221 BI) or hydrogels protected by a matrix of hydrophilic fibers (US 1999/5972487 A) are incorporated.
O recurso a espumas tem sido, igualmente, uma alternativa encontrada para a melhoria do conforto do pé. Salienta-se a patente US 2010/7842848 B2 onde se utilizam espumas de silicone que contêm paredes porosas que ancoram partículas hidrofílicas . The use of foams has also been an alternative found to improve foot comfort. Note US 2010/7842848 B2 where silicone foams containing porous walls that anchor hydrophilic particles are used.
As membranas respiráveis e impermeáveis ao vapor de água constituem uma alternativa para alcançar melhorias para o conforto do ponto de vista de gestão de humidade. Têm sido alvo de uma multiplicidade de aplicações (US 2007/0204482 Al, WO 2010/113112, WO 2010/044657, US 2009/0211119 Al, US 2009/7546697 B2), em particular no calçado, onde são aplicadas nos seus diferentes componentes (palmilha, sola, forro, ... ) . Estas membranas são, por vezes conjugadas com outros componentes, tais como malhas, tecidos, não-tecido e redes de diferentes materiais e estruturas, atribuindo ao sistema uma melhor performance e resistência. Breathable and water vapor impermeable membranes are an alternative to achieve improvements in comfort from a moisture management standpoint. They have been the target of a multitude of applications (US 2007/0204482 Al, WO 2010/113112, WO 2010/044657, US 2009/0211119 Al, US 2009/7546697 B2), particularly in footwear, where they are applied to their different components. (insole, sole, lining, ...). These membranes are sometimes combined with other components such as meshes, fabrics, nonwoven and nets of different materials and structures, giving the system better performance and strength.
Esta invenção distingue-se das soluções já existentes pela combinação de materiais apenas ao nível da palmilha. Note- se que sendo a invenção uma palmilha e não num sapato, permite que o utilizador use a mesma em qualquer tipo de sapato, tendo como resultado um sapato com excelente propriedade de gestão de humidade e consequentemente melhoria do seu conforto. As patentes US 2010/7661204 B2, US 2008/0115385 Al, US 2009/7543398 B2, US 2003/6665959 BI e US 1995/5452525 referem, igualmente, que a sua funcionalidade é aplicada em palmilhas. Porém, a combinação de materiais que descrevem, membranas impermeáveis e respiráveis, camadas absorventes aplicadas sobre tecidos e não-tecidos, é diferente da descrita na palmilha desta invenção. This invention differs from existing solutions by combining materials only at the insole level. Note that the invention being an insole rather than a shoe, allows the wearer to wear it on any type of shoe, resulting in a shoe with excellent moisture management property and consequently improved comfort. US 2010/7661204 B2, US 2008/0115385 A1, US 2009/7543398 B2, US 2003/6665959 BI and US 1995/5452525 also state that their functionality is applied to insoles. However, the combination of materials describing, impermeable and breathable membranes, absorbent layers applied to fabrics and nonwovens is different from that described in the insole of this invention.
É referido pelas patentes US 2009/0211119 Al, US 2009/0107013 Al, WO 99/66812 e WO 98/51177, a existência de furos na palmilha e na sola do sapato para melhorar a respirabilidade . A invenção aqui descrita difere destas na medida em que a respirabilidade não é devida à presença de furos, mas sim resultante da conjugação dos materiais que compõem a palmilha. US 2009/0211119 Al, US 2009/0107013 Al, WO 99/66812 and WO 98/51177 refer to holes in the insole and sole of the shoe to improve breathability. The invention described herein differs from these in that breathability is not due to the presence of holes, but rather to the combination of the materials that make up the insole.
O documento EP0713658 divulga uma palmilha em multicamada para absorção da transpiração do pé. Esta multicamada é constituída por uma camada superior constituída, por exemplo, por polipropileno, uma camada intermédia de GORE- TEX e uma camada inferior para absorção da transpiração. EP0713658 discloses a multilayer insole for absorbing foot perspiration. This multilayer consists of an upper layer consisting of, for example, polypropylene, an intermediate layer of GORETEX and a lower layer for absorption of perspiration.
O documento US2004/0168355 divulga um material compósito em multicamadas para absorção de líquidos. O material pode ser constituído por e camadas sendo a camada absorvente intermédia constituída por uma estrutura microporosa de poliolefina ou polietileno com sílica. US2004 / 0168355 discloses a multilayer composite material for liquid absorption. The material may consist of layers and the intermediate absorbent layer comprising a microporous polyolefin or silica polyethylene structure.
Em ambos os documentos anteriores os materiais de base são membranas microporosas onde ocorre difusão do vapor de água. Contudo, a palmilha da presente invenção é constituída por um material com elevada capacidade de absorção de vapor de água e também de água líquida, e não apenas de permeação de vapor de água condensado. Os restantes materiais usados na palmilha da presente invenção, redes poliméricas, são materiais abertos cuja principal função, entre outras é servir de suporte mecânico da camada absorvente (camada intermédia) . In both previous documents the base materials are microporous membranes where water vapor diffusion occurs. However, the insole of the present invention is comprised of a material having a high water vapor and liquid water absorption capacity, not just condensate water vapor permeation. The remaining materials used in the insole of the present invention, polymeric nets, are open materials whose The main function, among others, is to serve as mechanical support of the absorbent layer (intermediate layer).
Descrição da invenção Description of the invention
Esta invenção relata uma palmilha com elevada capacidade de absorção de água (vapor e liquido) , com durabilidade superior a um dia. This invention relates to a high water absorbing insole (steam and liquid), lasting longer than one day.
A palmilha desenvolvida consiste numa estrutura multicamada, tal como ilustrado nas Figuras 1 e 2. A camada superior (1) e inferior (3) da estrutura é constituída por uma ou mais camadas de rede têxtil de fibras/fios poliméricos. A camada intermédia (2) é . constituída por uma ou mais camadas de um manto polimérico absorvente. Acresce ainda a esta estrutura multicamada uma outra camada que poderá ser constituída por um material tipo têxtil 3D. Poderão ainda acrescer outras camadas, sendo que deverão ser sempre colocadas abaixo da(s) camada (s) polimérica ( s ) absorvente ( s ) , de modo a não introduzir uma resistência adicional à absorção de água. The developed insole consists of a multilayer structure as illustrated in Figures 1 and 2. The upper (1) and lower (3) layer of the structure consists of one or more layers of polymeric fiber / yarn textile netting. The intermediate layer (2) is. consisting of one or more layers of an absorbent polymeric mantle. In addition to this multilayer structure is another layer which may consist of a 3D textile material. Other layers may be added and should always be placed below the absorbent polymer layer (s) so as not to introduce additional resistance to water absorption.
As aberturas das redes têxteis podem diferir. Na camada superior (1), que será a que vai estar em contacto com a meia do utilizador, as redes poderão ter uma abertura maior, para aumentar o contacto entre a peúga e o manto absorvente. As redes inferiores (3) poderão ter uma abertura menor, para aumentar a resistência à abrasão do conjunto e ao mesmo tempo dificultar a transferência de massa (suor) para o calçado. As redes superiores (1) poderão ser constituídas por fibras/fios poliméricosThe openings of textile nets may differ. In the upper layer (1), which will be in contact with the wearer's stocking, the nets may have a larger opening to increase contact between the sock and the absorbent mantle. The lower nets 3 may have a smaller opening to increase the abrasion resistance of the assembly and at the same time make it difficult to transfer sweat to the shoes. Upper nets (1) may consist of polymeric fibers / yarns
(monofilamento ou multifilamento) de diâmetro entre 0,20 e 0,0,60 mm com decitex entre 830 e 3300. As redes inferiores(monofilament or multifilament) with a diameter between 0.20 and 0.060 mm with a decitex between 830 and 3300. The lower nets
(3) poderão ser constituídas por fibras/fios poliméricos (monofilamento ou multifilamento ) de polímero de diâmetro entre 0,0,15 e 0,0,40 mm com decitex entre 330 e 2000. (3) may consist of polymeric fibers / yarns (monofilament or multifilament) polymer with a diameter between 0.015 and 0.040 mm with decitex between 330 and 2000.
Estas redes deverão ser constituídas por materiais sintéticos que não absorvam humidade e que sejam resistentes a bolor e bactérias para aumentar a sua durabilidade. Estas fibras devem ter elevada resistência à abrasão, para não sofrerem desgaste mecânico ou rasgar durante o uso. A este respeito é importante que a fibra tenha boa elasticidade e boa resistência a enrugamento e formação de vincos. Vários materiais poliméricos cumprem estes requisitos, como por exemplo PVC, PVDC, PU, entre outros . These nets should be made of moisture-absorbing synthetic materials that are resistant to mold and bacteria to increase their durability. These fibers must have high abrasion resistance so as not to suffer mechanical wear or tear during use. In this regard it is important that the fiber has good elasticity and good wrinkle and crease resistance. Several polymeric materials meet these requirements, such as PVC, PVDC, PU, among others.
A camada intermédia da palmilha (2) pode ser constituída por um ou vários substratos têxteis (tecido, malha, não- tecido) impregnados com materiais com elevada capacidade de absorção. Estes materiais, usualmente designados por superabsorventes , são compostos macro-moleculares hidrofílicos capazes de absorver grandes volumes de água ou soluções aquosas. Os superabsorventes podem ser produzidos por polimerização de ácido acrílico, ésteres acrílicos, acrilamida e outros monómeros insaturados. Estes materiais têm a particularidade de poder reter, na sua estrutura molecular, cerca de 100 a 1000 g de água por grama de polímero inicialmente seco, estando a maior ou menor capacidade de retenção associada a diversos factores estruturais . The intermediate layer of the insole (2) may consist of one or more textile substrates (woven, knitted, non-woven) impregnated with materials with high absorption capacity. These materials, commonly referred to as superabsorbents, are hydrophilic macromolecular compounds capable of absorbing large volumes of water or aqueous solutions. Superabsorbents may be produced by polymerization of acrylic acid, acrylic esters, acrylamide and other unsaturated monomers. These materials have the particularity that they can retain in their molecular structure about 100 to 1000 g of water per gram of initially dry polymer, with greater or lesser retention capacity being associated with various structural factors.
Na estrutura multicamada da palmilha poderá existir ainda, uma outra camada constituída por um material tipo uma malha têxtil 3D. Tal como o seu nome indica, trata-se de uma malha tridimensional composta por dois tipos de substratos têxteis exteriores, que estão unidos por spacer yarns . Os fios mais frequentemente utilizados neste tipo de malha são o poliéster, a poliamida e o Kevlar. A multifuncionalidade desta camada reside no aumento do conforto do utilizador pelo efeito cushioning, absorção de choques, aumento da resistência ao desgaste pelo uso da palmilha, aumento da respirabilidade (favorece a circulação do ar) e redistribuição da pressão exercida pelo utilizador. De salientar ainda, que por esta malha apresentar elevada resiliência, ou seja, recuperar a sua forma após exercida compressão, é adequada para as utilizações sucessivas e constantes da palmilha. In the multilayer structure of the insole there may be yet another layer consisting of a material like a 3D textile mesh. As its name implies, it is a three-dimensional mesh composed of two types of outer textile substrates, which are joined by spacer yarns. The most commonly used yarns in this type of mesh are polyester, polyamide and Kevlar. The multifunctionality This layer lies in increased wearer comfort by cushioning, shock absorption, increased wear resistance by wearing the insole, increased breathability (favors air circulation) and redistribution of pressure exerted by the wearer. It is also noteworthy that because this mesh has high resilience, that is, regain its shape after compression, it is suitable for successive and constant uses of the insole.
A estas camadas poderão ainda acrescer outras camadas de material flexíveis como por exemplo, filmes de cortiça, entre outros. To these layers may also be added other layers of flexible material such as cork films, among others.
Outra característica da palmilha desta invenção é que poderá ser fornecida com um revestimento antibacteriano e/ou antifungico, aplicado por spray, spray ultrasónico, impregnação, e outros semelhantes. Another feature of the insole of this invention is that it may be provided with an antibacterial and / or antifungal coating, spray applied, ultrasonic spray, impregnation, and the like.
Os elementos constituintes da presente invenção podem ser assemblados sob a forma de palmilha por costura, (termo) colagem, união por ultra-sons, união por rádio- frequência, laminagem por hot melt ou flat-bed, entre outros . The constituent elements of the present invention may be assembled in the form of insole by seam, (thermo) bonding, ultrasonic bonding, radio frequency bonding, hot melt lamination or flat bed, among others.
0 suor existente na peúga, consequência da sudorese do utilizador, atravessa a camada superior (1), constituída por uma ou várias redes têxteis poliméricas de maior abertura, sendo rapidamente absorvido pela camada intermédia (2) da palmilha. Este processo resulta num aumento de volume da(s) camada (s) absorvente ( s ) (camada intermédia da palmilha, (2)), sem que tal seja percepcionado pelo utilizador, uma vez que as redes têxteis que rodeiam a(s) camada (s) absorvente ( s ) conferem estabilidade dimensional à estrutura multicamada. O processo de absorção é perfeitamente reversível, pelo que bastará ao utilizador retirar a palmilha do sapato durante algumas horas para que o teor de humidade da palmilha regresse aos valores normais (ou seja, os que estão em equilíbrio com a humidade relativa do ambiente a que a palmilha esteja exposta). Sweat in the sock, as a result of the user's sweating, crosses the upper layer (1), which is comprised of one or more wide open polymeric textile nets, and is quickly absorbed by the intermediate layer (2) of the insole. This process results in an increase in the volume of the absorbent layer (s) (middle layer of the insole (2)) without being perceived by the user as the textile webs surrounding the Absorbent layer (s) impart dimensional stability to the multilayer structure. The absorption process is perfectly reversible, so it will be enough for the user to remove the insole from the shoe for a few hours for the moisture content of the insole to return to normal values (ie those that are in equilibrium with the relative humidity of the environment the insole is exposed).
É importante referir que o aumento do número de camadas utilizado para a construção da palmilha, não introduz uma redução significativa da sua performance. O essencial é assegurar a proximidade entre o manto absorvente e a peúga, de modo a este conseguir remover eficazmente o suor. It is important to note that the increase in the number of layers used for the construction of the insole does not introduce a significant reduction in its performance. The essential thing is to ensure that the absorbent cloak and the sock are close so that it can effectively remove sweat.
Sumário da Invenção Summary of the Invention
A presente invenção tem como objecto uma palmilha que compreende uma estrutura multicamada, sendo pelo menos uma camada higroscópica , que é constituída por um ou vários substratos têxteis impregnados com materiais macro- moleculares hidrofílicos . The present invention relates to an insole comprising a multilayer structure comprising at least one hygroscopic layer consisting of one or more textile substrates impregnated with hydrophilic macromolecular materials.
Numa realização preferencial, a estrutura multicamada da palmilha da presente invenção compreende ainda uma camada intermédia constituída por uma ou mais camadas de um manto polimérico higroscópico . In a preferred embodiment, the multilayer insole structure of the present invention further comprises an intermediate layer consisting of one or more layers of a hygroscopic polymeric mantle.
Ainda noutra realização preferencial, a espessura da camada higroscópica está compreendida entre 0,5 e 5 mm. In yet another preferred embodiment, the thickness of the hygroscopic layer is between 0.5 and 5 mm.
Numa outra realização preferencial, as camadas superior e inferior da estrutura multicamada são constituídas por uma rede têxtil de fibras ou fios poliméricos, estando a espessura das camadas de rede têxtil estar compreendida entre 0 , 3 e 3 mm. In another preferred embodiment, the upper and lower layers of the multilayer structure are comprised of a textile mesh of polymeric fibers or yarns, the thickness of the layers of textile mesh being between 0, 3 and 3 mm.
Numa outra realização preferencial, a palmilha compreende ainda uma camada constituída por um material tipo têxtil tridimensional situada por baixo da camada higroscópica intermédia, ou uma camada tipo filme de cortiça, estando a espessura da camada compreendida entre 0,25 e 5 mm. In another preferred embodiment, the insole further comprises a layer consisting of a three-dimensional textile-like material below the intermediate hygroscopic layer, or a cork-film layer, the layer thickness being between 0.25 and 5 mm.
Ainda noutra realização preferencial, as redes da camada superior da palmilha apresentam fibras ou fios poliméricos com diâmetro entre 0,0,20 e 0,0,60 mm com decitex entre 830 e 3300 e, as redes da camada inferior apresentam fibras ou fios poliméricos com diâmetro entre 0,0,15 e 0,40 mm com decitex entre 330 e 2000. In yet another preferred embodiment, the insole upper layer nets have polymeric fibers or yarns between 0.020 and 0.060 mm in diameter with decitex between 830 and 3300, and the lower layer nets have polymeric fibers or yarns with a diameter between 0.015 and 0.40 mm with decitex between 330 and 2000.
Numa outra realização preferencial, as redes têxteis são de cloreto de polivinilo ou cloreto de polivinilideno ou poliuretano e a malha têxtil tridimensional é de poliéster, poliamida ou kevlar. In another preferred embodiment, the textile nets are polyvinyl chloride or polyvinylidene chloride or polyurethane and the three-dimensional textile mesh is polyester, polyamide or kevlar.
Ainda noutra realização preferencial, a palmilha da presente invenção compreende ainda um revestimento antibacteriano e/ou antifúngico. In yet another preferred embodiment, the insole of the present invention further comprises an antibacterial and / or antifungal coating.
Um outro objecto da presente invenção é o método de obtenção da palmilha descrita anteriormente, em que o revestimento antibacteriano e/ou antifúngico é aplicado por spray, spray ultrasónico, ou por impregnação. Numa outra realização preferencial, a palmilha é obtida por assemblagem por costura, (termo) colagem, união por ultra- sons, união por rádio-frequência, laminagem por hot melt ou flat-bed. Another object of the present invention is the method of obtaining the insole described above, wherein the antibacterial and / or antifungal coating is applied by spray, ultrasonic spray, or impregnation. In another preferred embodiment, the insole is obtained by seam assembly, (thermo) bonding, ultrasonic bonding, radio frequency bonding, hot melt lamination or flat bed.
É ainda objecto da presente invenção calçado que compreende a palmilha descrita anteriormente e obtida pelo método descrito acima. It is further object of the present invention footwear comprising the insole described above and obtained by the method described above.
Exemplos Examples
Para uma mais fácil compreensão da invenção descrevem-se de seguida exemplos de realizações preferenciais do invento, as quais, contudo, não pretendem, limitar o objecto da presente invenção. For an easier understanding of the invention, the following are examples of preferred embodiments of the invention which, however, are not intended to limit the scope of the present invention.
De forma a avaliar o efeito das palmilhas, da presente invenção, no desempenho global do conjunto calçado + palmilha + meia, foram realizados vários testes dinâmicos com voluntários ( ear trials), em condições controladas (em termos de temperatura, humidade relativa, ventilação e nivel de actividade física) . In order to evaluate the effect of the insoles of the present invention on the overall performance of the footwear + insole + sock set, several dynamic trials with volunteers (ear trials) were conducted under controlled conditions (in terms of temperature, relative humidity, ventilation and level of physical activity).
Estes testes permitiram coligir informação sobre o real desempenho das novas palmilhas, em condições de utilização realistas. Os testes foram concebidos para fornecer dados quantitativos acerca do efeito das novas palmilhas sobre o transporte de água/suor na região dos pés. Optou-se por testar uma das possíveis palmilhas de estrutura multicamada, objecto desta invenção, nomeadamente a estrutura com apenas três camadas: rede têxtil polimérica A /manto superabsorvente/rede têxtil polimérica B. These tests provided information on the actual performance of the new insoles under realistic conditions of use. The tests are designed to provide quantitative data on the effect of the new insoles on water / sweat transport in the feet region. It was decided to test one of the possible insoles of multilayer structure, object of this invention, namely the three-layer structure: polymeric textile mesh A / superabsorbent mantle / polymeric textile mesh B.
Foram testados 2 conjuntos: i) sapatilha normal e ii) sapatilha normal + nova palmilha. Os resultados obtidos são apresentados na Figura 3. A figura mostra que a utilização da nova palmilha com uma sapatilha normal melhora substancialmente o seu desempenho relativamente ao transporte de suor. De facto, quando a sapatilha é testada sem a nova palmilha, cerca de 44% da água colocada inicialmente na peúga, permanecem nesta no fim do ensaio. Este valor desce para 18% quando a mesma sapatilha é testada com a nova palmilha. Fica assim demonstrada a mais- valia associada à utilização da nova palmilha. Two sets were tested: i) normal foot and ii) normal foot + new insole. The results obtained are shown in Figure 3. The figure shows that using the new insole with a normal foot significantly improves its performance in relation to sweat transport. In fact, when the shoe is tested without the new insole, about 44% of the water initially placed in the sock remains at the end of the test. This value drops to 18% when the same shoe is tested with the new insole. This demonstrates the added value associated with the use of the new insole.
Descrição das Figuras Description of the Figures
Para uma mais fácil compreensão da invenção juntam-se em anexo as figuras, as quais, representam realizações preferenciais do invento que, contudo, não pretendem, limitar o objecto da presente invenção.  For an easier understanding of the invention, attached are figures which represent preferred embodiments of the invention which, however, are not intended to limit the scope of the present invention.
A Figura 1 ilustra a parte superior, de uma palmilha construída de acordo com a invenção aqui descrita. Figure 1 illustrates the upper part of an insole constructed in accordance with the invention described herein.
A Figura 2 representa uma perspectiva aumentada do corte da secção recta de uma palmilha. Figure 2 is an enlarged perspective view of the cross section of a straight insole.
A Figura 3 mostra a performance da palmilha. Figure 3 shows the performance of the insole.
Lisboa, 22 de Maio de 2012 Lisbon, May 22, 2012

Claims

Reivindicações Claims
1. Palmilha caracterizada por compreender uma estrutura multicamada, sendo pelo menos uma camada higroscópica, constituída por um ou vários substratos têxteis impregnados com materiais macro-moleculares hidrofílicos . Insole characterized in that it comprises a multilayer structure, at least one hygroscopic layer, consisting of one or more textile substrates impregnated with hydrophilic macromolecular materials.
2. Palmilha de acordo com a reivindicação anterior caracterizada por a estrutura multicamada compreender uma camada intermédia constituída por uma ou mais camadas de um manto polimérico higroscópico . Insole according to the preceding claim, characterized in that the multilayer structure comprises an intermediate layer consisting of one or more layers of a hygroscopic polymeric mantle.
3. Palmilha de acordo com qualquer das reivindicações anteriores caracterizada por a espessura da camada higroscópica estar compreendida entre 0,5 e 5 mm. Insole according to any of the preceding claims, characterized in that the thickness of the hygroscopic layer is between 0.5 and 5 mm.
4. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por as camadas superior e inferior da estrutura multicamada serem constituídas por uma rede têxtil de fibras ou fios poliméricos. Insole according to one of the preceding claims, characterized in that the upper and lower layers of the multilayer structure consist of a textile web of polymeric fibers or yarns.
5. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por a espessura das camadas de rede têxtil estar compreendida entre 0,3 e 3 mm. Insole according to any one of the preceding claims, characterized in that the thickness of the textile mesh layers is between 0.3 and 3 mm.
6. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por compreender ainda uma camada constituída por um material tipo têxtil tridimensional situada por baixo da camada higroscópica intermédia, ou uma camada tipo filme de cortiça . Insole according to any one of the preceding claims, characterized in that it further comprises a layer consisting of a three-dimensional textile-like material located below the intermediate hygroscopic layer, or a cork film-like layer.
7. Palmilha de acordo com a reivindicação anterior caracterizada por a espessura da camada estar compreendida entre 0,25 e 5 mm. Insole according to the preceding claim, characterized in that the thickness of the layer is between 0.25 and 5 mm.
8. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por as redes da camada superior apresentarem fibras ou fios poliméricos com diâmetro entre 0,0,20 e 0,0,60 mm com decitex entre 830 e 3300. Insole according to any one of the preceding claims, characterized in that the upper layer nets have polymeric fibers or threads with a diameter between 0.020 and 0.060 mm with a decitex between 830 and 3300.
9. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por as redes da camada inferior apresentarem fibras ou fios poliméricos com diâmetro entre 0,0,15 e 0,40 mm com decitex entre 330 e 2000. Insole according to any one of the preceding claims, characterized in that the lower layer nets have polymeric fibers or yarns with a diameter between 0.015 and 0.40 mm and a decitex between 330 and 2000.
10. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por as redes têxteis serem de cloreto de polivinilo ou cloreto de polivinilideno ou poliuretano. Insole according to any one of the preceding claims, characterized in that the textile nets are polyvinyl chloride or polyvinylidene chloride or polyurethane.
11. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por a malha têxtil tridimensional ser de poliéster, poliamida ou kevlar . Insole according to any one of the preceding claims, characterized in that the three-dimensional textile fabric is made of polyester, polyamide or kevlar.
12. Palmilha de acordo com qualquer uma das reivindicações anteriores caracterizada por compreender ainda um revestimento antibacteriano e/ou antifúngico . Insole according to any one of the preceding claims, further comprising an antibacterial and / or antifungal coating.
13. Método de obtenção da palmilha descrita nas reivindicações anteriores caracterizado por o revestimento antibacteriano e/ou antifúngico ser aplicado por spray, spray ultrasónico, ou por impregnação . Method of obtaining the insole described in the preceding claims characterized in that the antibacterial and / or antifungal coating to be applied by spray, ultrasonic spray, or impregnation.
14. Método de obtenção da palmilha descrita nas reivindicações anteriores caracterizado por as camadas serem assembladas por costura, (termo) colagem, união por ultra-sons, união por rádio-frequência, laminagem por hot melt ou flat-bed. Insole method described in the preceding claims, characterized in that the layers are assembled by seaming, (thermo) bonding, ultrasonic bonding, radio frequency bonding, hot melt lamination or flat bed.
15. Calçado caracterizado por compreender a palmilha descrita nas reivindicações 1-12 e obtida pelo método descrito nas reivindicações 13-14. Footwear comprising the insole described in claims 1-12 and obtained by the method described in claims 13-14.
PCT/IB2012/000994 2011-05-23 2012-05-22 Highly absorbent insole and its uses WO2012160435A2 (en)

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