US4871611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breathable backing or release liner and process for forming the same
Assignee: MEAD RELEASE PRODUCTS Inc (FKA SCHOELLER RELEASE PRODUCTS Inc AND ARHCO INC) 1450 NORTH WEST AVE WEST CHICAGO IL 60185 A CORP OF
•
Filing: 1987-06-23
•
Granted: 1989-10-03
•
Expires: 2007-06-23
Abstract
Abstract A breathable backing or release liner comprising a breathable, woven or non-woven support member having a silicone-release coating on essentially only one side thereof, said coating being formed by applying a radiation-curable composition containing a polysiloxane to one side of said support and exposing said composition to radiation such that said composition does not substantially penetrate said support.
Inventors
- 👤 Andrew P. LeBel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:39
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58; A61F13/60; A61L15/22; A61L15/26; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T442/00; Y10T442/20; Y10T442/2762; Y10T442/277; Y10T442/2803; Y10T442/2861; Y10T442/2869; Y10T442/2885; Y10T442/2893; Y10T442/291
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
84 words
A breathable backing or release liner comprising a breathable, woven or non-woven support member having a silicone-release coating on essentially only one side thereof, said coating being formed by applying a radiation-curable composition containing a polysiloxane to one side of said support and exposing said composition to radiation such that said composition does not substantially penetrate said support, and said support member having a moisture vapor transmission rate greater than 250 g/sq.m./24 hrs./20° C./80% RH and air permeability greater than 80 cu. ft./min./sq. ft.
Claim 2
Dependent Claim
84 words
A breathable backing or release liner comprising a breathable, woven or non-woven support member having a silicone-release coating on essentially only one side thereof, said coating being formed by applying a radiation-curable composition containing a polysiloxane to one side of said support and exposing said composition to radiation such that said composition does not substantially penetrate said support, and said support member having a moisture vapor transmission rate greater than 250 g/sq.m./24 hrs./20° C./80% RH and air permeability greater than 80 cu. ft./min./sq. ft.
Claim 3
Dependent Claim
24 words
The backing or liner of claim 1 wherein said support has a moisture vapor transmission rate greater than 250 g/sq. m/24 hrs./20° C./80% RH.
Claim 4
Dependent Claim
22 words
The backing or liner of claim 2 wherein said support has an air permeability greater than 80 ft. 3 /min./ft. 2 .
Claim 5
Dependent Claim
14 words
The backing or liner of claim 3 wherein said radiation is electron beam radiation.
Claim 6
Dependent Claim
14 words
The backing or liner of claim 4 wherein said polysiloxane includes ethylenically unsaturated groups.
Claim 7
Dependent Claim
28 words
The backing or liner of claim 5 wherein said coating is applied to said support in an amount of about 0.5 to 1.0 pound per 3000 sq. ft.
Claim 8
Dependent Claim
17 words
The backing or liner of claim 6 wherein said coating composition is essentially solvent free and non-aqueous.
Claim 9
Dependent Claim
23 words
The backing or liner of claim 7 wherein the dwell time of said composition on said support is less than about 5 seconds.
Claim 10
Dependent Claim
14 words
The backing or liner of claim 8 wherein said support is a non-woven fabric.
Claim 11
Dependent Claim
14 words
The backing or liner of claim 8 wherein said support is a woven fabric.
Claim 12
Dependent Claim
106 words
A process for preparing a breathable backing or release liner which comprises the sequentially performed steps of: (a) providing a woven or non-woven breathable support member having two sides, said support member having a moisture vapor transmission rate greater than 250 g/sq.m./24 hrs./20° C./80% RH and /or an air permeability greater than 80 cu. ft./min./sq. ft., (b) applying a radiation curable composition containing a polysiloxane to one side of said support member, and (c) exposing said radiation curable composition to radiation to cure said composition, said steps (b) and (c) being conducted in such a manner that said composition does not substantially penetrate said support member.
Claim 13
Dependent Claim
106 words
A process for preparing a breathable backing or release liner which comprises the sequentially performed steps of: (a) providing a woven or non-woven breathable support member having two sides, said support member having a moisture vapor transmission rate greater than 250 g/sq.m./24 hrs./20° C./80% RH and /or an air permeability greater than 80 cu. ft./min./sq. ft., (b) applying a radiation curable composition containing a polysiloxane to one side of said support member, and (c) exposing said radiation curable composition to radiation to cure said composition, said steps (b) and (c) being conducted in such a manner that said composition does not substantially penetrate said support member.
Claim 14
Dependent Claim
22 words
The process of claim 11 wherein said support has a moisture vapor transmission rate greater than 250 g/sq. m/24 hrs./20° C./80% RH.
Claim 15
Dependent Claim
20 words
The process of claim 12 wherein said support has an air permeability greater than 80 ft. 3 /min./ft 2 .
Claim 16
Dependent Claim
12 words
The process of claim 13 wherein said radiation is electron beam radiation.
Claim 17
Dependent Claim
26 words
The process of claim 14 wherein said coating is applied to said support in an amount of about 0.5 to 1.0 pound per 3000 sq. ft.
Claim 18
Dependent Claim
16 words
The process of claim 15 wherein said said coating composition is essentially solvent free and non-aqueous.
Claim 19
Dependent Claim
21 words
The process of claim 16 wherein the dwell time of said composition on said support is less than about 5 seconds.
Claim 20
Dependent Claim
12 words
The process of claim 17 wherein said polysiloxane includes ethylenically unsaturated groups.
Claim 21
Dependent Claim
12 words
The process of claim 18 wherein said support is a non-woven fabric.
Claim 22
Dependent Claim
12 words
The process of claim 18 wherein said support is a woven fabric.
References Cited (Backward Citations)
US3121021A
Cited
US3364063A
Cited
US3523846A
Cited
US3677788A
Cited
US4202925A
Cited
US4537811A
Cited
US4427737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |