US4737400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making elastic bandaging material
Assignee: Covidien AG
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Filing: 1985-06-25
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Granted: 1988-04-12
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Expires: 2005-06-25
Abstract
Abstract A method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric which has been formed by interweaving essentially non-stretch filling yarns with stretch and non-stretch warp yarns, said method comprising conveying a continuous web of said fabric in a substantially relaxed condition, applying steam to the relaxed fabric, and applying an adhesive layer to the back side of the relaxed fabric. A breatable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising a fabric formed by essentially non-stretch filling yarns interwoven with stretch and non-stretch warp yarns, the fabric normally being in a relaxed condition, an adhesive applied in a level layer to the entire back side of the relaxed fabric such that, in its relaxed state, the bandaging material has an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout, and such that, in its stretched state, the adhesive bandaging material has an adhesive layer which has a non-uniform, discontinuous surface and a depth which varies from being relatively great where the non-stretch warp yarns extend to the back side of the fabric to being relatively slight or even zero where the non-stretch warp yarns extend away from the back side of the fabric.
Inventors
- 👤 Charles J. Edison
- 👤 Thomas S. Murphy, Jr.
- 👤 Raymond H. Willingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F; A61F13/00; A61F13/02; A61F13/0273; A61L15/22; A61L15/24; A61F13/15; A61F13/56; A61F13/58; A61F2013/00089; A61F2013/00102; A61F2013/00119; A61F2013/00238; A61F13/15577; A61F2013/15821; A61F2013/5666; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10S602/00; Y10S602/90; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2754
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
206 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed condition; and (b) a pressure-sensitive, permanently tacky, adhesive applied in a level layer to the entire back side of said relaxed fabric to produce an adhesive bandaging material which in its relaxed state has an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout, and which in its stretched state has an adhesive layer which has a nonuniform, discontinuous surface and which has a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and which has a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 2
Dependent Claim
206 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed condition; and (b) a pressure-sensitive, permanently tacky, adhesive applied in a level layer to the entire back side of said relaxed fabric to produce an adhesive bandaging material which in its relaxed state has an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout, and which in its stretched state has an adhesive layer which has a nonuniform, discontinuous surface and which has a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and which has a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 3
Dependent Claim
23 words
The bandaging material of claim 1 wherein each said stretch warp yarn has an elastomeric spandex core filament wrapped with essentially non-stretch fibers.
Claim 4
Dependent Claim
12 words
The bandaging material of claim 2 wherein said non-stretch yarns are cotton.
Claim 5
Dependent Claim
12 words
The bandaging material of claim 1 wherein said non-stretch yarns are cotton.
Claim 6
Dependent Claim
35 words
The bandaging material of claim 1 further including a coating applied to said face side of said fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material.
Claim 7
Dependent Claim
17 words
The bandaging material of claim 5 wherein said coating comprises a latex including a silicone release agent.
Claim 8
Dependent Claim
27 words
The bandaging material of claim 5 wherein said coating further comprises a non-fray agent to reduce fraying of the edges of said fabric during and after tearing.
Claim 9
Dependent Claim
18 words
The bandaging material of claim 7 wherein said coating comprises a latex including an acrylic polymer non-fray agent.
Claim 10
Dependent Claim
37 words
The bandaging material of claim 1 further including a coating applied to said face side of said fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing.
Claim 11
Dependent Claim
18 words
The bandaging material of claim 9 wherein said coating comprises a latex including an acrylic polymer non-fray agent.
Claim 12
Dependent Claim
11 words
The bandaging material of claim 1 wherein said adhesive is hypo-allergenic.
Claim 13
Dependent Claim
19 words
An assembly comprising a core onto which the bandaging material of Claim 1 is wound into a coiled roll.
Claim 14
Dependent Claim
251 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material; and (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 15
Dependent Claim
251 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material; and (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 16
Dependent Claim
252 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretched filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing; (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 17
Dependent Claim
252 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretched filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing; (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 18
Dependent Claim
268 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a release agent, to improve unwindability of a coiled roll of said bandaging material, and a non-fray agent, to reduce fraying of the edges of said fabric during and after tearing; and (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 19
Dependent Claim
268 words
A breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material comprising: (a) a dry fabric having face and back sides and formed by essentially non-stretch filling yarns interwoven with warp yarns, said warp yarns consisting essentially of non-stretch textile warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on the back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said fabric normally being in a relaxed, fully contracted condition with said interwoven filling and warp yarns being exfoliated and spread and with said non-stretch yarns expanded and loosened; (b) a dry coating on the entirety of said face side of said fabric, said coating comprising a release agent, to improve unwindability of a coiled roll of said bandaging material, and a non-fray agent, to reduce fraying of the edges of said fabric during and after tearing; and (c) a dry pressure-sensitive, permanently tacky, adhesive in a level layer on the entire back side of said relaxed fabric, said adhesive bandaging material in its relaxed state having an adhesive layer which has a smooth exposed surface and a substantially uniform depth throughout and in its stretched state having an adhesive layer which has a non-uniform, discontinuous surface and a depth which is relatively great where said non-stretch warp yarns extend to said back side of said fabric and a depth which is relatively slight or zero where said non-stretch warp yarns extend away from said back side of said fabric.
Claim 20
Independent Claim
174 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; and (b) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while said conveyed fabric is in a substantially relaxed condition.
Claim 21
Independent Claim
174 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; and (b) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while said conveyed fabric is in a substantially relaxed condition.
Claim 22
Dependent Claim
17 words
The method of claim 16 wherein said application of heat and moisture is an application of steam.
Claim 23
Dependent Claim
32 words
The method of claim 16 wherein said layer of adhesive is applied in a uniform depth to said back side of said fabric while said fabric is in a substantially relaxed condition.
Claim 24
Dependent Claim
97 words
The method of claim 18 wherein said step of applying a layer of adhesive to said back side of said conveyed fabric while it is in a substantially relaxed condition comprises applying a layer of adhesive to a conveyor by means of a doctor blade, contacting the exposed surface of said adhesive layer with said back side of said relaxed fabric and transferring said adhesive layer from said surface of said conveyor to said back side of said relaxed fabric to form a continuously smooth and level layer of adhesive on said back side of said fabric.
Claim 25
Dependent Claim
38 words
The method of claim 16 further including the step of applying a coating to said face side of said conveyed fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material.
Claim 26
Dependent Claim
20 words
The method of claim 20 wherein the temperature of said fabric during said method is maintained below approximately 235° F.
Claim 27
Dependent Claim
25 words
The method of claim 20 wherein said coating applied to said face side of said conveyed fabric comprises a latex including a silicone release agent.
Claim 28
Dependent Claim
35 words
The method of claim 20 wherein said coating applied to said face side of said conveyed fabric further comprises a nonfray agent to reduce fraying of the edges of said fabric during and after tearing.
Claim 29
Dependent Claim
20 words
The method of claim 26 wherein the temperature of said fabric during said method is maintained below approximately 235° F.
Claim 30
Dependent Claim
26 words
The method of claim 26 wherein said coating applied to said face side of said conveyed fabric comprises a latex including an acrylic polymer non-fray agent.
Claim 31
Dependent Claim
40 words
The method of claim 16 further including the step of applying a coating to said face side of said conveyed fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing.
Claim 32
Dependent Claim
20 words
The method of claim 26 wherein the temperature of said fabric during said method is maintained below approximately 235° F.
Claim 33
Dependent Claim
26 words
The method of claim 26 wherein said coating applied to said face side of said conveyed fabric comprises a latex including an acrylic polymer non-fray agent.
Claim 34
Dependent Claim
20 words
The method of claim 16 including the step of drying said conveyed fabric immediately after applying said heat and moisture.
Claim 35
Dependent Claim
76 words
The method of claim 29 including the steps, after drying said conveyed fabric immediately after applying said heat and moisture, of: (a) applying a coating to said face side of said conveyed fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material; and (b) drying said conveyed fabric immediately after applying said coating; (c) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 36
Dependent Claim
78 words
The method of claim 29 including the steps, after drying said conveyed fabric immediately after applying said heat and moisture, of: (a) applying a coating to said face side of said conveyed fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing; and (b) drying said conveyed fabric immediately after applying said coating; (c) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 37
Dependent Claim
93 words
The method of claim 29 including the steps, after drying said conveyed fabric immediately after applying said heat and moisture, of: (a) applying a coating to said face side of said conveyed fabric, said coating comprising a release agent, to improve unwindability of a coiled roll of said bandaging material, and a non-fray agent, to reduce fraying of the edges of said fabric during and after tearing; and (b) drying said conveyed fabric immediately after applying said coating; (c) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 38
Dependent Claim
31 words
The method of claim 16 further including the final steps of winding said conveyed fabric into a roll and slitting said roll into a plurality of rolls of predetermined roll width.
Claim 39
Dependent Claim
12 words
The method of claim 16 wherein said non-stretch yarns comprise cotton yarns.
Claim 40
Dependent Claim
23 words
The method of claim 16 wherein each said stretch yarn comprises a spandex filament core around which are wrapped fibers including cotton fibers.
Claim 41
Dependent Claim
20 words
The method of claim 16 wherein the temperature of said fabric during said method is maintained below approximately 235° F.
Claim 42
Dependent Claim
18 words
The method of claim 16 wherein said adhesive applied to said back side of said fabric is hypo-allergenic.
Claim 43
Independent Claim
260 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and stretch warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of said conveyed and dried fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material; (d) drying said coating comprising said release agent on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in a substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 44
Independent Claim
260 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and stretch warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of said conveyed and dried fabric, said coating comprising a release agent to improve unwindability of a coiled roll of said bandaging material; (d) drying said coating comprising said release agent on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in a substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 45
Independent Claim
258 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of said conveyed fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing; (d) drying said coating comprising said non-fray agent on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 46
Independent Claim
258 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of said conveyed fabric, said coating comprising a non-fray agent to reduce fraying of the edges of said fabric during and after tearing; (d) drying said coating comprising said non-fray agent on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 47
Independent Claim
275 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of conveyed fabric, said coating comprising a release agent, to improve unwindability of a coiled roll of said bandaging material, and a non-fray agent, to reduce fraying of the edges of said fabric during and after tearing; (d) drying said coating comprising said release and non-fray agents on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in a substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
Claim 48
Independent Claim
275 words
The method of producing breathable, conformable, elastic, pressure-sensitive, permanently tacky, adhesive bandaging material from a fabric having face and back sides and which has been formed by interweaving essentially non-stretch filling yarns with warp yarns, said warp yarns consisting essentially of non-stretch warp yarns interspersed with stretch warp yarns, said filling and warp yarns woven in a pattern such that said stretch warp yarns have an average float length on said back side of said fabric which exceeds the average float length of said non-stretch warp yarns on said back side, said method comprising the following steps: (a) conveying a continuous web of said fabric in a substantially relaxed condition and applying heat and moisture to said relaxed fabric to exfoliate and spread said interwoven filling and warp yarns and to expand and loosen said non-stretch yarns thereby facilitating a fuller contraction of said stretch yarns; (b) drying said conveyed fabric immediately after applying said heat and moisture; (c) applying a coating to the entirety of said face side of conveyed fabric, said coating comprising a release agent, to improve unwindability of a coiled roll of said bandaging material, and a non-fray agent, to reduce fraying of the edges of said fabric during and after tearing; (d) drying said coating comprising said release and non-fray agents on said conveyed fabric immediately after applying said coating; (e) applying a layer of pressure-sensitive, permanently tacky adhesive to said back side of said conveyed fabric while it is in a substantially relaxed condition; and (f) drying said adhesive layer on said conveyed fabric; (g) the temperature of said fabric during said method being maintained below approximately 235° F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |