CN101677648B - Outsoles for ESD type protective footwear and methods for manufacturing the same - Google Patents
Outsoles for ESD type protective footwear and methods for manufacturing the same Download PDFInfo
- Publication number
- CN101677648B CN101677648B CN2008800064735A CN200880006473A CN101677648B CN 101677648 B CN101677648 B CN 101677648B CN 2008800064735 A CN2008800064735 A CN 2008800064735A CN 200880006473 A CN200880006473 A CN 200880006473A CN 101677648 B CN101677648 B CN 101677648B
- Authority
- CN
- China
- Prior art keywords
- outer bottom
- footwear
- conductive fibers
- flexible material
- conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/36—Footwear with health or hygienic arrangements with earthing or grounding means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
Abstract
An outsole (2) for a footwear, which prevents electrostatic discharges (ESD) from a person wearing the footwear to a device being handled, is substantially made of a flexible material (5) and comprises an electrically conductive connection from an upper surface (2a) of the outsole to a lower surface (2b) of the outsole. The electrically conductive connection consists of one or several electrically conductive fibers (4).
Description
Technical field
The present invention relates to a kind of outer bottom and the method for making this outer bottom that is used for footwear, this outer bottom can prevent to wear the people of footwear and the Electrostatic Discharge between institute's holding equipment.
Background technology
From the people to the electrostatic sensitive equipment of being held or the static discharge between the material (for example, integrated circuit or electronic equipment) usually be enough to damage this equipment.For example, the workman who has been found that factory only on factory floor walking just can produce electrostatic potential above 20000 volts.Friction between sole and the flooring material produces high-voltage potential on one's body the workman.If this workman is near an electrostatic sensitive equipment, thereby this charged workman can damage this equipment to this equipment discharge.
Can adopt various means that electrostatic protection is provided.First kind of equipment is a lossy belt, this belt be centered around user's ankle or in sole placement and maintenance contact with heel, for example referring to U.S. Pat 5653047.When the user walked on the floor and produces electrostatic potential, electric charge had been neutralized basically.Some problems of this equipment comprise owing to irregular walking makes the user can not suitably enclose this equipment and causes the inefficacy of electric assembly, only if heel fully contacts with ground because grounding apparatus can not suitably be worked.
Second type equipment is a kind of static dissipative shoe.Typically, the static discharge scope of this footwear is 10
6To 10
9Ohms/sq.The outer bottom of this footwear is blended in chemical substance in the plastic material of outer bottom to produce static dissipative resistance.This footwear use limited owing to resistance is high relatively, and this chemical substance possibly limit the service life of this equipment.
In order to overcome above-mentioned shortcoming; U.S. Pat 5653047 discloses a kind of footwear; This footwear are provided with conductive plug in footwear outer bottom toe area, and this plug stretches out the outer bottom upper surface slightly and is lower than the outer bottom lower surface so that the stable contact between ground and the footwear inner conducting layer to be provided.
Summary of the invention
The shortcoming and the problem of the footwear of U.S. Pat 5653047 comprise: (i) make complicated and expensive; The danger that crack or depression occur is (ii) arranged between conductive plug and outer bottom; In crack or depression, possibly accumulate dust and moisture; (iii) when using these footwear, can cause inconvenience if conductive plug stretches out too much, and if/or conductive plug stretch out can cause very little electrically contact unreliable; The danger of unreliable operation is (iv) arranged after using several times owing to the wearing and tearing of conductive plug, and (the structure that a complicacy is v) arranged in the upper end of conductive plug.
Therefore, main purpose of the present invention provides a kind of outer bottom that is used for footwear, and this outer bottom avoids wearing the people of footwear and the Electrostatic Discharge between institute's holding equipment, and can avoid or alleviate above-mentioned prior art problems and defective at least through this outer bottom.
Another object of the present invention provides a kind of like this outer bottom, and it has the reliability of raising and the tearing property of resistance to wearing.
Another object of the present invention provides the method that a kind of manufacturing is used for the outer bottom of footwear, and this outer bottom can prevent the device damage that caused by static discharge, and realizes above-mentioned purpose.
These purposes comprise that other purpose realizes through described outer bottom of the claim of liking enclosed and manufacturing approach.
To describe the present invention in detail with the illustrative embodiments shown in the by way of example in the accompanying drawings through reference below.
Description of drawings
Fig. 1 shows the footwear that have according to the outer bottom of embodiment of the present invention.
Fig. 2 is the sectional view of footwear shown in Fig. 1.
Fig. 3 is the amplifier section of Fig. 2.
Fig. 4 to 6 all is the cross-sectional views that have according to the footwear of the outer bottom of alternative embodiment of the present invention.
In institute's drawings attached, same equipment, part and details adopt same designated.
The specific embodiment
Fig. 1 and Fig. 2 show footwear or the footwear that have according to the outer bottom of embodiment of the present invention.Said footwear has the top 1 of the opening in the upper end, and if desired, top 1 can be provided with conventional type protective cap (clearly not illustrating).The said outer bottom of Reference numeral 2 expression, and the interior end that constitutes by the material that strengthens comfortableness of Reference numeral 3 expressions.
According to the present invention, said outer bottom 2 comprises that the conduction from outer bottom upper surface 2a to outer bottom lower surface 2b of the form that is a plurality of conductive fibers 4 connects.Said conductive fiber can comprise carbon, metal, conducting polymer materials, or the conductive material of any other type in fact.
Said conductive fiber 4 makes said conductive fiber 4 keep the relative position relevant with molding process preferably by in Unitarily molded the hardened flexible material 5 at outer bottom 2 (for example, gathering the nitrogen ester material).Therefore, said conductive fiber 4 embeds in the hardenable binder, and hardenable binder surrounds the said conductive fiber of part at least, and at hardening state conductive fiber 4 is fixed on appropriate location relative to each other.
According to the embodiment of Fig. 1 to 3, said conductive fiber 4 random arrangement relative to each other under non-woven condition is not so that they form the fibrous structure as braided fabric or equivalent.Said conductive fiber 4 preferably directly distributes in mould with random pattern.
Said conductive fiber 4 can pass whole outer bottom 2 or its major part, and perhaps they can be arranged on one or more separation sidepieces of outer bottom 2.The length of conductive fiber 4 can be longer than the thickness of footwear outer bottom 2.
Preferably, said conductive fiber 4 provides a plurality of conductive paths from outer bottom 2 upper surface 2a to outer bottom 2 lower surface 2b.Therefore, obtaining more reliably, low-resistance electric connects.
Then will describe another embodiment of the invention with reference to figure 4, Fig. 4 is the cross-sectional view of footwear.Here, each conductive fiber 4 is the end 3 (or the upper surface 2a or any that is fixed on outer bottom 2 contact with outer bottom 2 other layers) in its respective end is fixed in, and the length of conductive fiber 4 is longer than the thickness of footwear outer bottom 2.Said conductive fiber 4 is arranged such that they all extend to the lower surface 2b of outer bottom 2 from the upper surface 2a of outer bottom 2, thereby a plurality of conductive paths that pass said outer bottom are provided.
In Fig. 4, even said conductive fiber 4 is embedded in the flexible material 5 of outer bottom 2, said conductive fiber 4 also passes said outer bottom and evenly distributes, to obtain like conductive fiber 4 outward appearances the scrub-brush.
In Fig. 5, show similar embodiment.Here, said conductive fiber 4 is arranged on a plurality of separation sidepieces of outer bottom 2.
In order to make the tractable product that is made up of said randomly oriented fiber, said conductive fiber 4 can be bonded in together.The implication of bonding is that said conductive fiber 4 is hooked in together and under non-woven condition, is attached to each other.Such bonding or the layer that tangles can be processed as a unit in the process of making outer bottom 2, even it is very thin.Also can adopt other that these optical fiber are kept together and be convenient to its method of operating.
In an embodiment of the invention shown in Fig. 6, its use is in the said tack coat under the non-woven condition.Said embodiment comprises a plurality of tack coats 4, wherein every layer of conductive fiber material that comprises the conduction connection that provides from outer bottom 2 upper surface 2a to outer bottom 2 lower surface 2b.Preferably, in outer bottom 2, said tack coat 4 is basic vertical layout of a plurality of side locations of outer bottom.Optional, a tack coat that comprises conductive fiber material only is set in outer bottom 2.
But optional or additionally, said a plurality of conductive fibers can comprise one or more conductive fiber braids in outer bottom, this conductive fiber braid can vertically be arranged in the said outer bottom.
Each tack coat or braid can be set to bilayer, three layers or multilayer.
In an optional embodiment; Said a plurality of conductive fiber can be sewed up or be woven in system based on fiber, matrix or the layer that constitutes by for example polymeric material in, this system, matrix or layer are integrally formed in the hardened flexible material of outer bottom then.
Said conductive fiber 4 can comprise the linear density of fiber quality at about 0.5 fiber to about 5 Denier, and/or has the fiber of the linear density of different fiber qualities.The length of said conductive fiber 4 can be that about 20mm is to about 100mm.
Above-mentioned outer bottom provides fabulous esd protection function.Footwear with above-mentioned outer bottom will prevent the static discharge from the people that is installed with said footwear to institute's holding equipment.In addition, said footwear have reduced the danger that the people who is installed with said footwear meets with the electric shock that is caused by static discharge.
In addition, be pointed out that, through surface under outside fiber be set and significantly improved and resistance to wear and tear ability.
In addition, the outer bottom of the above-mentioned type can be provided with flexible anti nail protective layer between the interior end 3 and outer bottom 2 or in the outer bottom 2, and open US-2006-0265909-A1 is said like our unsettled U.S. Patent application.
The various embodiments of outer bottom can be combined to form other embodiment of the present invention as stated.Particularly, said a plurality of conductive fiber can be set to multiple aforesaid structure or system.In addition, said embodiment can adopt the several different methods manufacturing according to the present invention.
According to a kind of method, make the outer bottom 2 that is used for footwear through following steps: (i) downside at the end 3 arranges or attached conductive fiber 4 that it is attached to the top 1 of footwear again in footwear; And (ii) with flexible material 5 be molded into said in the end 3 and randomly be molded into top 1, thereby in flexible material 5 fixing conductive fiber 4, form outer bottom 2 thus, outer bottom 2 prevents the infringement that causes owing to static discharge.Naturally, conductive fiber 4 must extend to provide the conduction of passing outer bottom to connect along whole outer bottom 2.Conductive fiber 4 can use the disclosed any way of this specification to arrange.
According to another kind diverse ways slightly, make the outer bottom that is used for footwear through following steps: (i) arrange or attached conductive fiber that at the downside of upper shoe part it seals in the bottom; And the (ii) molded flexible material on the top of footwear, thereby conductive material is fixed in the flexible material, to form outer bottom 2, outer bottom 2 prevents because the infringement that static discharge causes.
According to another method, make the outer bottom that is used for footwear through following steps: (i) arrange conductive fiber at mould; And (ii) through filling flexible material in mould and the said flexible material that hardens with fixing conductive fiber in the flexible material of outer bottom, thereby molded rubber outsole, outer bottom prevents because the infringement that static discharge causes.The conduction that conductive fiber is moulded from the outer bottom upper surface to the outer bottom lower surface connects.Preferably, conductive fiber is outstanding from the upper surface and the lower surface of outer bottom.Said outer bottom can be attached to the top of footwear in the step afterwards, thereby forms complete footwear, and it prevents the static discharge from the people that is installed with said footwear to institute's holding equipment.
Should be noted that the term as used herein outer bottom has covered the outer bottom of the type of as above describing and the sole of the various types of being made up of outer bottom and the interior end.
Claims (20)
1. outer bottom (2) that is used for footwear; This outer bottom prevents to be installed with the people of said footwear and the static discharge between institute's holding equipment; Said outer bottom is made up of flexible material (5) basically, and comprises upper surface (2a) from said outer bottom to the conduction connection of the lower surface (2b) of said outer bottom, and said outer bottom is characterised in that; Said conduction connects and comprises one or more conductive fibers (4), said one or more conductive fibers by Unitarily molded in said flexible material.
2. outer bottom as claimed in claim 1 is characterized in that, said conduction connects and comprises a plurality of conductive fibers (4).
3. outer bottom as claimed in claim 1 is characterized in that, said a plurality of conductive fibers provide a plurality of conductive paths from the upper surface of said outer bottom to the lower surface of said outer bottom.
4. like claim 2 or 3 described outer bottoms, it is characterized in that said a plurality of conductive fibers are under the non-woven condition.
5. outer bottom as claimed in claim 4 is characterized in that, the said a plurality of conductive fibers that are under the non-woven condition are set to pass whole outer bottom.
6. outer bottom as claimed in claim 4 is characterized in that, is in one or more separation sidepieces that said a plurality of conductive fibers under the non-woven condition are arranged on outer bottom.
7. outer bottom as claimed in claim 4; It is characterized in that; Be in said a plurality of conductive fibers under the non-woven condition and all have the length longer, and the conductive path from the upper surface of said outer bottom to the lower surface of said outer bottom is provided in each said a plurality of conductive fiber than the thickness of said outer bottom.
8. outer bottom as claimed in claim 6 is characterized in that, the said a plurality of conductive fibers that are under the non-woven condition are set to one or more tack coats.
9. outer bottom as claimed in claim 8 is characterized in that, said one or more tack coats basically vertically are arranged in the said outer bottom.
10. like claim 2 or 3 described outer bottoms, it is characterized in that said a plurality of conductive fibers are set to one or more braids.
11. outer bottom as claimed in claim 10 is characterized in that, said one or more braids basically vertically are arranged in the said outer bottom.
12. outer bottom as claimed in claim 1 is characterized in that, said one or more conductive fibers are carbon fibers.
13. outer bottom as claimed in claim 1 is characterized in that, said conductive fiber is sewed up or is woven in system based on fiber, matrix or the layer, this system, matrix or layer by Unitarily molded in said flexible material.
14. footwear, these footwear prevent to be installed with the people of said footwear and the static discharge between institute's holding equipment, said footwear comprise each described outer bottom in the claim 1 to 13.
15. a method that is used to make the outer bottom (2) that is used for footwear, these footwear are used to avoid being installed with the people of said footwear and the static discharge between institute's holding equipment, this method may further comprise the steps: form the said outer bottom of being processed by flexible material (5) basically; And form conduction connection from the upper surface (2a) of said outer bottom to the lower surface (2b) of said outer bottom; Said method is characterised in that; Through arranging that in said flexible material one or more conductive fibers (4) form said conduction and connect, said one or more conductive fibers by Unitarily molded in said flexible material.
16. method as claimed in claim 15 is characterized in that, through arranging that in said flexible material a plurality of conductive fibers (4) form said conduction and connect.
17. method as claimed in claim 16 is characterized in that, said a plurality of conductive fibers are arranged in the said flexible material under non-woven condition.
18. method as claimed in claim 17 is characterized in that, the said a plurality of conductive fibers that under non-woven condition, are arranged in the said flexible material pass whole outer bottom distribution.
19., it is characterized in that said one or more conductive fibers are sewed up or are woven in system, matrix or the layer based on fiber like claim 15 or 16 described methods, said system, matrix or layer are arranged in again in the said flexible material.
20. a method that is used to make footwear, these footwear prevent to be installed with the people of said footwear and the static discharge between institute's holding equipment, said method comprises each described method in the claim 15 to 19.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0700490A SE531804C2 (en) | 2007-02-28 | 2007-02-28 | Wear soles for ESD protective footwear and methods of manufacturing them |
| SE0700490-6 | 2007-02-28 | ||
| SE07004906 | 2007-02-28 | ||
| PCT/SE2008/000155 WO2008105709A1 (en) | 2007-02-28 | 2008-02-26 | Outsoles for esd type protective footwear and methods for manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101677648A CN101677648A (en) | 2010-03-24 |
| CN101677648B true CN101677648B (en) | 2012-02-22 |
Family
ID=39721483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800064735A Expired - Fee Related CN101677648B (en) | 2007-02-28 | 2008-02-26 | Outsoles for ESD type protective footwear and methods for manufacturing the same |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100031537A1 (en) |
| EP (1) | EP2114186A1 (en) |
| CN (1) | CN101677648B (en) |
| CA (1) | CA2679061A1 (en) |
| SE (1) | SE531804C2 (en) |
| WO (1) | WO2008105709A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AR075645A1 (en) * | 2009-08-10 | 2011-04-20 | Vicla S A | CONDUCTIVE, RESISTIVE AND ANTITRIBOELECTRIC FOOTWEAR. SAME MANUFACTURING METHOD |
| US20220151335A1 (en) * | 2018-11-15 | 2022-05-19 | N-Ion Sports Technology Limited | Grounding footwear with a blade portion |
| US20220125156A1 (en) * | 2019-01-25 | 2022-04-28 | David Fu | Footwear article |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233769A (en) * | 1990-07-17 | 1993-08-10 | Spenco Medical Corporation | Electrically conductive shoe insole |
| CN2593603Y (en) * | 2002-12-06 | 2003-12-24 | 孙晓均 | Conductive anti-electrostatic shoes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US993932A (en) * | 1910-12-17 | 1911-05-30 | Paris Leroy Whitestine | Fruit-drier. |
| US3993932A (en) * | 1976-01-16 | 1976-11-23 | Weigl John W | Antistatic footwear |
| US5653047A (en) * | 1995-09-28 | 1997-08-05 | Lucent Technologies Inc. | Solid state ESD footwear |
| SE522661C2 (en) * | 2000-12-20 | 2004-02-24 | Arbesko Ab | Flexible protective layer intended to be used to provide a footwear protection for footwear to prevent damage from penetrating objects, as well as a footwear comprising the flexible protective layer and a means of providing the flexible protective layer |
-
2007
- 2007-02-28 SE SE0700490A patent/SE531804C2/en not_active IP Right Cessation
-
2008
- 2008-02-26 WO PCT/SE2008/000155 patent/WO2008105709A1/en active Application Filing
- 2008-02-26 US US12/449,826 patent/US20100031537A1/en not_active Abandoned
- 2008-02-26 EP EP08724098A patent/EP2114186A1/en not_active Withdrawn
- 2008-02-26 CN CN2008800064735A patent/CN101677648B/en not_active Expired - Fee Related
- 2008-02-26 CA CA002679061A patent/CA2679061A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233769A (en) * | 1990-07-17 | 1993-08-10 | Spenco Medical Corporation | Electrically conductive shoe insole |
| CN2593603Y (en) * | 2002-12-06 | 2003-12-24 | 孙晓均 | Conductive anti-electrostatic shoes |
Also Published As
| Publication number | Publication date |
|---|---|
| SE0700490L (en) | 2008-08-29 |
| WO2008105709A1 (en) | 2008-09-04 |
| EP2114186A1 (en) | 2009-11-11 |
| SE531804C2 (en) | 2009-08-11 |
| US20100031537A1 (en) | 2010-02-11 |
| CN101677648A (en) | 2010-03-24 |
| CA2679061A1 (en) | 2008-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120222 Termination date: 20130226 |