US4183978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raster-like coating of heat-sealable adhesives on substrates
Assignee: KUFNER TEXTILWERKE KG
•
Filing: 1975-03-17
•
Granted: 1980-01-15
•
Expires: 1995-03-17
Abstract
Abstract A patch or insert, which may be applied to clothing or the like, consists of a substrate, which is preferably a textile fabric, on which is mounted a discontinuous pattern, in raster-like formation, of a heat sealing adhesive. The coating consists of two superposed layers of adhesive, each adhesive having a different adhesive quality.
Inventors
- 👤 Josef Hefele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:05
CPC Classifications
D; D06; D06M; D06M17/00; A; A41; A41D; A41D27/00; A41D27/02; A41D27/06; Y; Y10; Y10T; Y10T428/00; Y10T428/20; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24893; Y10T428/24942; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A method of manufacturing a flexible heat-sealing structure comprising the steps of: (a) applying a first raster layer of isolated spots of heat sealable adhesive to one side of a flexible substrate; (b) applying a second raster layer of isolated spots of heat sealable adhesive on top of said first raster layer, spots of said second layer lying only on top of the spots of said first layer and thereby not in direct contact with said flexible substrate, the heat sealable adhesive of said first layer having lower thermoplastic flow properties than adhesive of said second layer, whereby the isolated spots on top of spots permit the heat-sealing structure to remain flexible after being secured to a textile article.
Claim 2
Independent Claim
119 words
A method of manufacturing a flexible heat-sealing structure comprising the steps of: (a) applying a first raster layer of isolated spots of heat sealable adhesive to one side of a flexible substrate; (b) applying a second raster layer of isolated spots of heat sealable adhesive on top of said first raster layer, spots of said second layer lying only on top of the spots of said first layer and thereby not in direct contact with said flexible substrate, the heat sealable adhesive of said first layer having lower thermoplastic flow properties than adhesive of said second layer, whereby the isolated spots on top of spots permit the heat-sealing structure to remain flexible after being secured to a textile article.
Claim 3
Dependent Claim
56 words
The method of claim 1 in which said first layer is applied by wiping the adhesive for said first layer through a screen onto said substrate and applying said second layer by transferring the adhesive for said second layer from a roller onto tops of the spots of said first layer and not onto said substrate.
Claim 4
Dependent Claim
18 words
The method of claim 2, in which said first layer is sintered prior to applying said second layer.
Claim 5
Dependent Claim
59 words
The method of claim 1 in which said first layer is applied by an engraved roller having engraved portions into which said adhesive for the first layer is wiped, and applying said second layer by transferring the adhesive for said second layer from a roller onto tops of the spots of said first layer and not onto said substrate.
Claim 6
Dependent Claim
23 words
The method of claim 1 in which a raster of at least 94 spots per square inch is applied as said first layer.
Claim 7
Dependent Claim
49 words
The method of claim 1 in which said first layer adhesive spots are pasty and said second layer is applied by dispersing a powdery heat-sealing adhesive onto the lower layer, portions of the powdery adhesive securing to the pasty first layer spots, and removing insecured powder from said substrate.
References Cited (Backward Citations)
US3126311A
Cited
US2199597A
Cited
US2264628A
Cited
US2489466A
Cited
US2631947A
Cited
US3098235A
Cited
US3463690A
Cited
US3674592A
Cited
US3682738A
Cited
US3676269A
Cited
US3959555A
Cited
US3822144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |