CA1205251A - Incontinent care products and process - Google Patents
Incontinent care products and processInfo
- Publication number
- CA1205251A CA1205251A CA000470218A CA470218A CA1205251A CA 1205251 A CA1205251 A CA 1205251A CA 000470218 A CA000470218 A CA 000470218A CA 470218 A CA470218 A CA 470218A CA 1205251 A CA1205251 A CA 1205251A
- Authority
- CA
- Canada
- Prior art keywords
- layer
- liner
- absorbent
- layers
- edges
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49003—Reusable, washable fabric diapers
- A61F13/49004—Reusable, washable fabric diapers with fastening means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/4401—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices with absorbent pads
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F2013/49068—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
- A61F2013/49076—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline as "I"-shaped
Abstract
ABSTRACT OF THE DISCLOSURE
An incontinent care product in the form of an adult brief, diaper, moisture containment pad or garment liner insert is disclosed. The product has an outer moisture impermeable barrier layer, a soft liner layer and at least one intermediate moisture absorbent layer between the liner and outer layers, with the layers being secured at least along their edges.
The edges of the barrier layer overlap and extend inwardly over edges of the liner layer along at least two opposite sides to contain moisture from escape from the liner and absorbent layers along the two opposite sides. A process for the prep-aration of the product is also disclosed.
An incontinent care product in the form of an adult brief, diaper, moisture containment pad or garment liner insert is disclosed. The product has an outer moisture impermeable barrier layer, a soft liner layer and at least one intermediate moisture absorbent layer between the liner and outer layers, with the layers being secured at least along their edges.
The edges of the barrier layer overlap and extend inwardly over edges of the liner layer along at least two opposite sides to contain moisture from escape from the liner and absorbent layers along the two opposite sides. A process for the prep-aration of the product is also disclosed.
Description
~ ~52~
The present invention relates to products for the care and comfort of incontinent patients and which products are highly moisture absorbent and fabricated for maximum moist-ure retention without leakage and which are repeatably washable to reduce replacement and cleaning costs. The invention also relates to a process for manufacturing these products.
More specifically, the present invention relates to moisture absorbent and moisture retentive products in the form of garments such as adult briefs and diapers, moisture containment pads, and moisture absorbent insert liners or shields for use by incontinent patients and which provide high moisture absorbency and retention while minimizing moisture leakage, and which provide increased patient comfort while reducing soilage of overgarments, bed sheets, and the like.
The products of the invention comprise an inner soft liner layer for contact with the patient, and an outer moisture impermeable barrier layer, and at least one highly moisture absorbent intermediate layer between the inner and outer layers, the edges of the barrier layer being folded inwardly over the edges of the inner and intermediate layers and secured thereto inwardly of their edges to prevent moisture leakage therealong.
Products for the care of incontinent patients having one or more layers of moisture absorbent material secured to a bottom or outer layer of moisture impermeable material are known. However, in such known constructions, the moisture absorbent layers-extend to and are exposed at the edges of the product with the result that moisture in the absorbent layers moves by wicking action to the edges of the product thus permitting moisture escape therealong with resultant patient discomfort and resultant wetting of co~ering garments, bed sheets and the like.
The present invention avoids the disadvantages of these known arrangements by fabricating the products in such a fashion that moisture in the absorbent layers is prevented from escaping at least along side edges of the product by the moisture impermeable layer which is folded over and encloses s~
the edges of the absorbent layers and is secured to the absorb-ent layers inwardly of the edges thereof. The imper~eable or barrier layer thus provides a moisture containment trap iII the form of a channel which functions to retain moisture within the garment or pad for increased patient comfort and reduced leakage.
These fea~ures and advantages of the present invention are obtained by a moisture-absorbent incontinent care product in the form of an adult brief, diaper, containment pad, or garment liner insert or shield and which comprises an outer moisture impermeable barrier layer, a soft liner layer for contact with t~e patient and at least one intermediate moisture layer between the inner and outer layers with the layers being secured together at least along or adjacent their edges. The edges of the barrier layer overlap and extend inwardly over the edges of the liner layer along at least two opposite sides thereof to contain moisture from escape from the liner and absorbent layers along the said two edges.
In one preferred fabrication, the side edges of the barrier layer are folded inwardly over the side edges of the inner and absorbent layers and are secured thereto by understitch-ing and this method of fabrication avoids stitching perforations in the outer surface of the permeable barrier layer which, if present, could result in leakage.
The concept of the present invention will now be more fully described with reference to the accompanying drawings wherein:
Figure 1 illustrates an adult diaper in flattened top plan view;
Figures 2A and 2B are top plan views of two embodi-ments of garment liner inser~s fabricated in accordance with the present invention;
Figure 3 is a sectional view taken along lines III-III
of Figure 1, or along line III-III of Figures 2A or 2B.
',r~`9~;~S~
Figure 4 is a sectional view showing a step in the fabrication of the products according to the present invention;
Figure 5 is a top plan view of one embodiment of an incontinent containment pad fabricated in accordance with the present invention;
Figure 6 is a sectional view taken along line VI-VI
of Figure 5.
Reference will now be had to the accompanying draw-ings wherein like reference numerals refer to like parts.
Figure-1 illustrates an adult brief 2 which is of conventional generally hour-glass shape pro~ided with dome fasteners 4 for securement-of the brief around the waist-of a patient. While dome fasteners are shown, the fastening could be achieved by Velcro (registered trade mark) fastening~, or tie cords.
As shown i~ Figure 3, the brief has an exterior ~oisture-impermeable barrier layer 6 and an inner soft liner layer 8 also shown in Fig. 1. Between the outer barrier layer 6 and the inner layer 8, one or more layers 10 of highly absorb-ent material are provided to absorb ~oisture passing into the garment through the liner layer. The provision of such three or more layers in incontinent care products such as garments and pads is known, bu~ th~ advan~ages resulting fro~ the pres-ent concept are the result of the unique way that the layers are secured together wherein edges 12 of the barrier layer extend inwardl~ over the edges 14 ancl 16 of the inne.r and absorbent-layers 8 and 10 respectively to enclose these edges withln the barrier layer which as shown provides a channel-shaped trap preventing any outward escape of moistllre downwardly or laterally outwardly from the garment.
A preferred fabrication is shown in Figure 3 which shows at 18 the edges 12 of the barrier layer secured to the edges 14, 16 of the ab~orbent layers by understitching. The width of the barrier layer 6 is greater than the width of the liner 8 and absorbent layer 10 and as shown the edges 12 of ~0 ;~2~:~S2~3l the barrier layer are folded inwardly over the liner and absorb-ent layers and then turned outwardly before the layers are stitched together. This looping of the barrier material along the edges of the other layers prior to securement by stitching ensures that the exterior surface of the barrier layer is not perforated during manufacture and which perfora-tions if present could result in leakage through the barrier layer. This unique arrangement is achieved by positioning the various layers of the article involved in the manner as shown in Figure 4, and then stitching the layers together along their edges and then turning the article inside-ou~ to provide the layer configuration as shown in Figure 3. Side edges of the garment inserts illustrated in Figures 2A and 2B may be formed in the same way as the side edges of the garment dis-cussed with respect to Figure 3 so that the barrier layer extends inwardly over the absorbent layers to achieve the advan-tagers as discussed.
In Figures 1, 2A and 2B the inward folding and secure-
The present invention relates to products for the care and comfort of incontinent patients and which products are highly moisture absorbent and fabricated for maximum moist-ure retention without leakage and which are repeatably washable to reduce replacement and cleaning costs. The invention also relates to a process for manufacturing these products.
More specifically, the present invention relates to moisture absorbent and moisture retentive products in the form of garments such as adult briefs and diapers, moisture containment pads, and moisture absorbent insert liners or shields for use by incontinent patients and which provide high moisture absorbency and retention while minimizing moisture leakage, and which provide increased patient comfort while reducing soilage of overgarments, bed sheets, and the like.
The products of the invention comprise an inner soft liner layer for contact with the patient, and an outer moisture impermeable barrier layer, and at least one highly moisture absorbent intermediate layer between the inner and outer layers, the edges of the barrier layer being folded inwardly over the edges of the inner and intermediate layers and secured thereto inwardly of their edges to prevent moisture leakage therealong.
Products for the care of incontinent patients having one or more layers of moisture absorbent material secured to a bottom or outer layer of moisture impermeable material are known. However, in such known constructions, the moisture absorbent layers-extend to and are exposed at the edges of the product with the result that moisture in the absorbent layers moves by wicking action to the edges of the product thus permitting moisture escape therealong with resultant patient discomfort and resultant wetting of co~ering garments, bed sheets and the like.
The present invention avoids the disadvantages of these known arrangements by fabricating the products in such a fashion that moisture in the absorbent layers is prevented from escaping at least along side edges of the product by the moisture impermeable layer which is folded over and encloses s~
the edges of the absorbent layers and is secured to the absorb-ent layers inwardly of the edges thereof. The imper~eable or barrier layer thus provides a moisture containment trap iII the form of a channel which functions to retain moisture within the garment or pad for increased patient comfort and reduced leakage.
These fea~ures and advantages of the present invention are obtained by a moisture-absorbent incontinent care product in the form of an adult brief, diaper, containment pad, or garment liner insert or shield and which comprises an outer moisture impermeable barrier layer, a soft liner layer for contact with t~e patient and at least one intermediate moisture layer between the inner and outer layers with the layers being secured together at least along or adjacent their edges. The edges of the barrier layer overlap and extend inwardly over the edges of the liner layer along at least two opposite sides thereof to contain moisture from escape from the liner and absorbent layers along the said two edges.
In one preferred fabrication, the side edges of the barrier layer are folded inwardly over the side edges of the inner and absorbent layers and are secured thereto by understitch-ing and this method of fabrication avoids stitching perforations in the outer surface of the permeable barrier layer which, if present, could result in leakage.
The concept of the present invention will now be more fully described with reference to the accompanying drawings wherein:
Figure 1 illustrates an adult diaper in flattened top plan view;
Figures 2A and 2B are top plan views of two embodi-ments of garment liner inser~s fabricated in accordance with the present invention;
Figure 3 is a sectional view taken along lines III-III
of Figure 1, or along line III-III of Figures 2A or 2B.
',r~`9~;~S~
Figure 4 is a sectional view showing a step in the fabrication of the products according to the present invention;
Figure 5 is a top plan view of one embodiment of an incontinent containment pad fabricated in accordance with the present invention;
Figure 6 is a sectional view taken along line VI-VI
of Figure 5.
Reference will now be had to the accompanying draw-ings wherein like reference numerals refer to like parts.
Figure-1 illustrates an adult brief 2 which is of conventional generally hour-glass shape pro~ided with dome fasteners 4 for securement-of the brief around the waist-of a patient. While dome fasteners are shown, the fastening could be achieved by Velcro (registered trade mark) fastening~, or tie cords.
As shown i~ Figure 3, the brief has an exterior ~oisture-impermeable barrier layer 6 and an inner soft liner layer 8 also shown in Fig. 1. Between the outer barrier layer 6 and the inner layer 8, one or more layers 10 of highly absorb-ent material are provided to absorb ~oisture passing into the garment through the liner layer. The provision of such three or more layers in incontinent care products such as garments and pads is known, bu~ th~ advan~ages resulting fro~ the pres-ent concept are the result of the unique way that the layers are secured together wherein edges 12 of the barrier layer extend inwardl~ over the edges 14 ancl 16 of the inne.r and absorbent-layers 8 and 10 respectively to enclose these edges withln the barrier layer which as shown provides a channel-shaped trap preventing any outward escape of moistllre downwardly or laterally outwardly from the garment.
A preferred fabrication is shown in Figure 3 which shows at 18 the edges 12 of the barrier layer secured to the edges 14, 16 of the ab~orbent layers by understitching. The width of the barrier layer 6 is greater than the width of the liner 8 and absorbent layer 10 and as shown the edges 12 of ~0 ;~2~:~S2~3l the barrier layer are folded inwardly over the liner and absorb-ent layers and then turned outwardly before the layers are stitched together. This looping of the barrier material along the edges of the other layers prior to securement by stitching ensures that the exterior surface of the barrier layer is not perforated during manufacture and which perfora-tions if present could result in leakage through the barrier layer. This unique arrangement is achieved by positioning the various layers of the article involved in the manner as shown in Figure 4, and then stitching the layers together along their edges and then turning the article inside-ou~ to provide the layer configuration as shown in Figure 3. Side edges of the garment inserts illustrated in Figures 2A and 2B may be formed in the same way as the side edges of the garment dis-cussed with respect to Figure 3 so that the barrier layer extends inwardly over the absorbent layers to achieve the advan-tagers as discussed.
In Figures 1, 2A and 2B the inward folding and secure-
2~ ment of the barrier layer 6 is shown only along the lateralside edges of the article as it is only along these edges that moisture leakage presents a problem. The end edges 20 and 22 of the articles shown in Figures 1, 2A and 2B respectively are the upper edges of the garment or insert liner when in use and as leakage along these edges will not normally occur these edges need simply be secured together by conventional binding, stitching or the like.
While Figures 2A and 2B specifically illustrate insert liners to be worn beneath conventional undergarments, it will be appreciated that larger incontinent pads for chair or bed use can be fabricated in similar fashion.
In the foregoing discussion of Figures 1, 2A and 2B the securement of the layers together is described as being by stitching. It will be appreciated, however, that other means of securement are possible such as by water insoluble adhesives or by radio frequency (RF) sealing in cases where the layers consist oE or include synthetic materials.
~ ~0525i~
Figure 5 illustrates a further embodiment of a containment or incontinent pad made in accordance with the teachings of the present invention, and Figure 6 is a sectional view taken along lines VI-VI of Figure 5.
In the embodiment of Figures 5 and 6, the barrier layer consists of a lower layer 24 which is secured at 26 to an upper peripheral border layer 28 of barrier material which extends inwardly over inner layer ~ and which is secured thereto by similar means. The intermediate absorbent layer 10 may conveniently then be secured along its edges to the inner sur-face of the lower layer 24 by adhesive or by dielectrir or radio frequency sealing as appropriate. With this construction3 i~ will be appreciated that the moisture containment barrier layer e~ends inwardly over the liner layer on all sides of the article.
While Figure 6 illustrates a lower barrier layer 24, and an upper peripheral barrier border 239 it will be ap-preciated that the lower barrier layer could alternativelysimply be turned inwardly and over the outer edges of $he liner layer and secured thereto by adhesives or heat-sealing.
The inner liner layer 8 contacts the skin of the patient and for comfort~ this layer should be of a strong skin-soft fabric which possesses a wicking characteristic to draw moisture away from the skin for distriDution throughout the highly absorbent intermediate layer 10 to prevent moisture pooling. The fabric used for the inner layer 8 may suitably be a cotton blend fabric sucb as a cotton/polyester blend which provides the necessary strength, skin-feel, absorbency, wick-ability and washability for long life.
The intermediate layer 10 should be of a soft anti-pilling material which has high moisture absorbency to draw moisture away from the liner layer for patient comfort. This intermediate layer may be of a non-woven fiber-blend synthetic felt material which provides for high moisture absorbency, moisture distribution and retention.
~0 3L;~ 5~
The barrier layer may conveniently be of synthetic material which is soft, supple, and crinkle-free. This layer may conveniently be a laminate having an outer layer of brushed knit material such as polyester laminated to a vinyl or similar synthetic inner layer which provides the necesary moisture impermeability while avoiding excess thickness and minimizing heat build-up and heat retention associated with conventional barrier layers. The laminated nature of the barrier layer is i.llustrated in Figure 6 with the layer of vinyl or similar material being shown by numeral 30, and ~he laminated layer o~ brushed knit material being shown at 32. The brushed knit surface of the barrier layer should form the outer surface in a finished article for appearance and skin-feel.
The various layers forming the product may be secured together only along their edges as discussed above but additional stitching between the inner and intermediate absorbent layers to centrally secure these layers together may be provided as shown at 34 in Figures 1, 2A and 2B. Two or more intermediate layers of absorbent material may be provided over the complete article or these additional absorbent layers may be of smaller size and positioned in the article in areas subject to greater moisture.
When the layers forming the present article are se-cured together by stitching, care should be taken to avoid the formation of stitching perforations in the barrier layer in areas other than along the inwardly positioned edges to avoid a path for moisture escapeO
.~ 5~
One method for the prepaTation of the articles of Figures 1, 2A and 2B is discussed above with reference to Fig-ure 4. The products of the invention can also be prepared by Eirst positioning the layer 6 of moisture impermeable material and then superposing on layer ~ the absorbent layer lO, and then superposing on layer 10 the liner layer 8. All three layers have side edges 12, 14, and 16 and the widths of the layers 8 and 10 are less than the width of impermeable layer 6. The side edges of impermeable layer 6 are then folded inwardly (in a manner similar to that shown in Figure 6) over the surface of liner layer 8, and the edges of impermea~le layer 6 are then secured to layer 8 and/or layer 10 at distances inwardly from the side edges of the liner layer 8 and/or the absorbent layer lO.
The end edges 20 a 22 of the three layers may simply then be secured together ~y stitching or binding or the like to provide the product as shown in Figures 2A and 2B.
Alternatively, and in this process, the length of $he layers 8 and lO may also be less ~han the length of the iMpermeable layer 6 and the end edges of the impermeable layer are also then folded inwardly over the end edges of layers 8 and 10 and the end edges of the impermeable layer then se-cured to the liner layer 8 and/or absorbent layer 10 at a dis-tance inwardly from the end edges of the liner layer. With such a construction, all edges of the layers 8 and 10 are encircled and enclosed by the impermeable layer 6 in the manner as shown in Figure ~, and which prevents any escape of moisture ~rom along the edges of the article.
As discussed earlier~ and depending upon the material from which the various layers are made, this secure-ment can be by water insoluble adhesives, stitching, di-electric heating or radio fre~uency sealing.
Conveniently and for ease of identification articles of different slzes or degree of absorbency may be coded by stitching the end edges 20 and 22 (see Figures 1, 2A and 2B~
with threads of diffe-rent colour.
While Figures 2A and 2B specifically illustrate insert liners to be worn beneath conventional undergarments, it will be appreciated that larger incontinent pads for chair or bed use can be fabricated in similar fashion.
In the foregoing discussion of Figures 1, 2A and 2B the securement of the layers together is described as being by stitching. It will be appreciated, however, that other means of securement are possible such as by water insoluble adhesives or by radio frequency (RF) sealing in cases where the layers consist oE or include synthetic materials.
~ ~0525i~
Figure 5 illustrates a further embodiment of a containment or incontinent pad made in accordance with the teachings of the present invention, and Figure 6 is a sectional view taken along lines VI-VI of Figure 5.
In the embodiment of Figures 5 and 6, the barrier layer consists of a lower layer 24 which is secured at 26 to an upper peripheral border layer 28 of barrier material which extends inwardly over inner layer ~ and which is secured thereto by similar means. The intermediate absorbent layer 10 may conveniently then be secured along its edges to the inner sur-face of the lower layer 24 by adhesive or by dielectrir or radio frequency sealing as appropriate. With this construction3 i~ will be appreciated that the moisture containment barrier layer e~ends inwardly over the liner layer on all sides of the article.
While Figure 6 illustrates a lower barrier layer 24, and an upper peripheral barrier border 239 it will be ap-preciated that the lower barrier layer could alternativelysimply be turned inwardly and over the outer edges of $he liner layer and secured thereto by adhesives or heat-sealing.
The inner liner layer 8 contacts the skin of the patient and for comfort~ this layer should be of a strong skin-soft fabric which possesses a wicking characteristic to draw moisture away from the skin for distriDution throughout the highly absorbent intermediate layer 10 to prevent moisture pooling. The fabric used for the inner layer 8 may suitably be a cotton blend fabric sucb as a cotton/polyester blend which provides the necessary strength, skin-feel, absorbency, wick-ability and washability for long life.
The intermediate layer 10 should be of a soft anti-pilling material which has high moisture absorbency to draw moisture away from the liner layer for patient comfort. This intermediate layer may be of a non-woven fiber-blend synthetic felt material which provides for high moisture absorbency, moisture distribution and retention.
~0 3L;~ 5~
The barrier layer may conveniently be of synthetic material which is soft, supple, and crinkle-free. This layer may conveniently be a laminate having an outer layer of brushed knit material such as polyester laminated to a vinyl or similar synthetic inner layer which provides the necesary moisture impermeability while avoiding excess thickness and minimizing heat build-up and heat retention associated with conventional barrier layers. The laminated nature of the barrier layer is i.llustrated in Figure 6 with the layer of vinyl or similar material being shown by numeral 30, and ~he laminated layer o~ brushed knit material being shown at 32. The brushed knit surface of the barrier layer should form the outer surface in a finished article for appearance and skin-feel.
The various layers forming the product may be secured together only along their edges as discussed above but additional stitching between the inner and intermediate absorbent layers to centrally secure these layers together may be provided as shown at 34 in Figures 1, 2A and 2B. Two or more intermediate layers of absorbent material may be provided over the complete article or these additional absorbent layers may be of smaller size and positioned in the article in areas subject to greater moisture.
When the layers forming the present article are se-cured together by stitching, care should be taken to avoid the formation of stitching perforations in the barrier layer in areas other than along the inwardly positioned edges to avoid a path for moisture escapeO
.~ 5~
One method for the prepaTation of the articles of Figures 1, 2A and 2B is discussed above with reference to Fig-ure 4. The products of the invention can also be prepared by Eirst positioning the layer 6 of moisture impermeable material and then superposing on layer ~ the absorbent layer lO, and then superposing on layer 10 the liner layer 8. All three layers have side edges 12, 14, and 16 and the widths of the layers 8 and 10 are less than the width of impermeable layer 6. The side edges of impermeable layer 6 are then folded inwardly (in a manner similar to that shown in Figure 6) over the surface of liner layer 8, and the edges of impermea~le layer 6 are then secured to layer 8 and/or layer 10 at distances inwardly from the side edges of the liner layer 8 and/or the absorbent layer lO.
The end edges 20 a 22 of the three layers may simply then be secured together ~y stitching or binding or the like to provide the product as shown in Figures 2A and 2B.
Alternatively, and in this process, the length of $he layers 8 and lO may also be less ~han the length of the iMpermeable layer 6 and the end edges of the impermeable layer are also then folded inwardly over the end edges of layers 8 and 10 and the end edges of the impermeable layer then se-cured to the liner layer 8 and/or absorbent layer 10 at a dis-tance inwardly from the end edges of the liner layer. With such a construction, all edges of the layers 8 and 10 are encircled and enclosed by the impermeable layer 6 in the manner as shown in Figure ~, and which prevents any escape of moisture ~rom along the edges of the article.
As discussed earlier~ and depending upon the material from which the various layers are made, this secure-ment can be by water insoluble adhesives, stitching, di-electric heating or radio fre~uency sealing.
Conveniently and for ease of identification articles of different slzes or degree of absorbency may be coded by stitching the end edges 20 and 22 (see Figures 1, 2A and 2B~
with threads of diffe-rent colour.
Claims (13)
1. A washable and reusable incontinent care product in the form of an adult brief, moisture containment pad or garment liner insert comprising an outer moisture impermeable barrier layer, a soft absorbent liner layer and at least one intermediate moisture absorbent layer between the liner and barrier layers, side portions of the barrier layer enclosing side edges of the liner and absorbent layers and overlapping and extending inwardly over side portions of the liner layer with side edges of the barrier layer being secured by stitching to the liner and absorbent layers at a distance inwardly from their side edges to prevent moisture escape from along the side edges of the absorbent and liner layers.
2. Product according to claim 1, wherein the side portions of the barrier layer are folded in a loop over the side portions of the liner layer whereby the stitching securement of the barrier layer to the liner layer is concealed.
3. Product according to claim 1, or 2, wherein the product is an adult brief or a garment liner, side portions of the barrier layer extending inwardly over the liner layer along lateral side edges of the brief or liner.
4. Product according to claim 1, or 2, wherein the product is a moisture containment pad with end portions of the barrier layer overlapping and extending inwardly over end portions of the liner and absorbent layers and being secured thereto inwardly of their ends by stitching to enclose the end edges.
5. Product according to claim 1, wherein the liner layer is made of a cot-ton/polyester blend material, the absorbent layer is a non-woven fibre-blend felt material, and the barrier layer is a laminate comprising a layer of vinyl plastic and a layer of brushed knit polyester material.
6. Process for the preparation of a washable and reusable incontinent care product in the form of an adult brief, diaper, moisture containment pad or garment liner comprising positioning a layer of moisture impermeable material having side and end edges, superposing on the impermeable layer a layer of mois-ture absorbent material having side and end edges and which has a width less than that of the impermeable layer, superposing on the absorbent layer a layer of liner material having side and end edges and which has a width less than that of the impermeable layer, folding side portions of the impermeable layer inward-ly over the liner layer to enclose the side edges of the liner and absorbent layers and overlap side portions of the liner layer and stitching the side edges of the barrier layer to the liner and absorbent layer at a distance inwardly from the side edges of the liner and absorbent layers.
7. Process according to claim 6, wherein the length of the absorbent and liner layers is less than the length of the impermeable layer, including the further step of folding end portions of the impermeable layer inwardly over the liner layer and stitching end edges of the impermeable layer to the liner layer at distances inwardly from the end edges thereof.
8. Process according to claim 6, wherein the absorb-ent layer is also secured by stitching to the impermeable layer at distances inwardly from the side edges of the absorbent layer.
9. Process according to claim 7, wherein the absorb-ent layer is also secured by stitching to the impermeable layer at distances inwardly from the side and end edges of the absorb-ent layer.
10. Process according to claim 6, including the further step of securing the end edges of the layers together.
11. Process for the preparation of a washable and reusable incontinent care product in the form of an adult brief, diaper, moisture containment pad or garment liner comprising, positioning a layer of moisture impermeable material having side and end edges, superposing a layer of liner material having side and end edges and which has a width less than the moisture imper-meable layer on the impermeable layer, superposing a layer of moisture absorbent material having side and end edges and which has a width less than the impermeable layer on the liner layer, aligning side edges of the layers and securing the layers together along their side edges by stitching, turning the secured layers inside out whereby the impermeable layer is positioned adjacent the absorbent layer with side portions of the impermeable layer overlapping and extending inwardly over side portions of the liner layer enclos-ing the side edges of the liner and absorbent layers.
12. Process according to claim 11, including the further step of securing the end edges of the layers together.
13. Process according to claims 6 or 11, wherein the liner layer is made of a cotton/polyester blend material, the absorbent layer is a non-woven fibre-blend felt material, and the barrier layer is a laminate comprising a layer of vinyl plastic and a layer of brushed knit polyester material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000470218A CA1205251A (en) | 1984-12-14 | 1984-12-14 | Incontinent care products and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000470218A CA1205251A (en) | 1984-12-14 | 1984-12-14 | Incontinent care products and process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1205251A true CA1205251A (en) | 1986-06-03 |
Family
ID=4129383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000470218A Expired CA1205251A (en) | 1984-12-14 | 1984-12-14 | Incontinent care products and process |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1205251A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801298A (en) * | 1986-11-28 | 1989-01-31 | Sorenson Wendy K J | Variable sized reusable diaper |
-
1984
- 1984-12-14 CA CA000470218A patent/CA1205251A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4801298A (en) * | 1986-11-28 | 1989-01-31 | Sorenson Wendy K J | Variable sized reusable diaper |
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