US4225376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a laminated surface
Assignee: Assi Can AB
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Filing: 1978-05-25
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Granted: 1980-09-30
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Expires: 1998-05-25
Abstract
Abstract In the bonding of two webs, each having a polyolefin resin surface thereon, to form a laminate the polyolefin surface of a first of said webs is heated to a temperature at which the resin will melt or become tacky, while the polyolefin surface of the second of said webs is heated to a given temperature. The heated surfaces are then brought together in a manner to form a substantially permanent bond therebetween. One advantage of the method is that extremely thick high-density plastic foils can be bonded successfully to fibrous carriers.
Inventors
- 👤 Rolf Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:19
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B29; B29C; B29C65/00; B29C65/02; B29C65/34; B29C65/36; B29C65/3604; B29C65/3656; B29C65/3644; B29C65/3672; B29C65/3676; B29C65/368; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/45; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/7232; B29C66/72321; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/83415; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91411; B29C66/91431; B29C66/9161; B29C66/91641; B29C66/91643; B29C66/91645; B29C66/919; B29C66/9192; B29C66/91921; B29C66/91931; B29C66/91935; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/088; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B15/20; B32B27/06; B32B27/08; B32B27/12; B32B38/00; B32B38/0036; C; C09; C09J; C09J5/00; C09J5/06; B29C66/91413; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2009/00; B32B2311/00; B32B2311/20; B32B2317/00; B32B2317/12; B32B2323/00; B32B2323/04; B32B2323/043
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
146 words
A method of bonding a first web, taken from a first storage reel, to a second web taken from a second storage reel, each of said webs having a polyolefin resin surface thereon comprising the steps of heating the polyolefin resin surface of the first web to a tacky or molten state, heating the polyolefin resin surface of the second web to a given temperature beneath the melting temperature thereof prior to unreeling the second web, substantially maintaining said temperature of the second web throughout the remaining steps, and pressing said polyolefin resin surfaces together while the polyolefin resin surface on the first web remains in the tacky or molten state to form a laminate, the temperature of the second web at lamination being of a magnitude such that said polyolefin resin surfaces, when pressed together, will be joined to form a substantially permanent bond therebetween.
Claim 2
Independent Claim
146 words
A method of bonding a first web, taken from a first storage reel, to a second web taken from a second storage reel, each of said webs having a polyolefin resin surface thereon comprising the steps of heating the polyolefin resin surface of the first web to a tacky or molten state, heating the polyolefin resin surface of the second web to a given temperature beneath the melting temperature thereof prior to unreeling the second web, substantially maintaining said temperature of the second web throughout the remaining steps, and pressing said polyolefin resin surfaces together while the polyolefin resin surface on the first web remains in the tacky or molten state to form a laminate, the temperature of the second web at lamination being of a magnitude such that said polyolefin resin surfaces, when pressed together, will be joined to form a substantially permanent bond therebetween.
Claim 3
Dependent Claim
46 words
A method according to claim 1, wherein the first web comprises a fibrous material having a surface of polyolefin resin thereon, and wherein the second web consists of a foil of polyolefin resin and wherein the means of heating the second web is not by flame.
Claim 4
Dependent Claim
31 words
A method according to claim 1, wherein the first web comprises an aluminum material having a polyolefin resin surface thereon, and wherein the second web comprises a foil of polyolefin resin.
Claim 5
Dependent Claim
17 words
A method according to claim 1, wherein said first and said second webs consist of polyolefin foils.
Claim 6
Independent Claim
58 words
A method according to any one of the preceding claims, in which the second web comprises a high density polyethylene plastic material having a melting temperature within the range of 110° to 150° C., wherein said surface of said second web is brought to a temperature corresponding to 50 to 95% of the melting temperature of said resin.
Claim 7
Dependent Claim
50 words
A method according to claim 5 wherein the first web comprises an aluminum material having a polyolefin resin surface thereon, wherein the second web comprises a foil of polyolefin resin and wherein the polyolefin coating of the first web is heated by creating electrical eddy currents in said aluminum foil.
Claim 8
Dependent Claim
49 words
A method according to claim 4 wherein the first web comprises an aluminum material having a polyolefin surface thereon, and wherein the second web comprises a foil of polyolefin resin, wherein the polyolefin coating of the first web is heated by creating electrical eddy currents in said aluminum foil.
Claim 9
Independent Claim
31 words
A method according to any one of claims 1 to 4, wherein said surface of said second web is heated to said given temperature, whilst wound on said second storage reel.
Claim 10
Dependent Claim
50 words
A method according to claim 8 wherein the first web comprises an aluminum material having polyolefin resin surface thereon, and wherein the second web comprises a foil of polyolefin resin and wherein the polyolefin coating of the first web is heated by creating electrical eddy currents in said aluminum foil.
Claim 11
Independent Claim
36 words
A method according to any one of claims 1 to 4, wherein said surface of said second web is heated to said given temperature during its travel from the second storage reel to said first web.
Claim 12
Dependent Claim
50 words
A method according to claim 10 wherein the first web comprises an aluminum material having a polyolefin resin surface thereon, wherein the second web comprises a foil of polyolefin resin and wherein the polyolefin coating of the first web is heated by creating electrical eddy currents in said aluminum foil.
Claim 13
Independent Claim
46 words
A method according to any one of claims 1 to 4, wherein said surface of said second web is preheated on said second storage reel and is then further heated to said given temperature during its travel from the second storage reel to said first web.
Claim 14
Dependent Claim
50 words
A method according to claim 12 wherein the first web comprises an aluminum material having a polyolefin resin surface thereon, wherein the second web comprises a foil of polyolefin resin and wherein the polyolefin coating of the first web is heated by creating electrical eddy currents in said aluminum foil.
Claim 15
Independent Claim
78 words
A method according to any one of claims 1-4 in which the second web comprises a high density polyethylene plastic material having a melting temperature within the range of 110° to 150° C., wherein said surface of said second web is brought to a temperature corresponding to 50 to 95% of the melting temperature of said resin and wherein said surface of said second web is heated to said given temperature, whilst wound on said second storage reel.
Claim 16
Independent Claim
83 words
A method according to any one of claims 1-4 in which the second web comprises a high density polyethylene plastic material having a melting temperature within the range of 110° to 150° C., wherein said surface of said second web is brought to a temperature corresponding to 50 to 95% of the melting temperature of said resin and wherein said surface of said second web is heated to said given temperature during its travel from the second storage reel to said first web.
Claim 17
Independent Claim
93 words
A method according to any one of claims 1-4 in which the second web comprises a high density polyethylene plastic material having a melting temperature within the range of 110° to 150° C., wherein said surface of said second web is brought to a temperature corresponding to 50 to 95% of the melting temperature of said resin and wherein said surface of said second web is preheated on said second storage reel and is then further heated to said given temperature during its travel from the second storage reel to said first web.
Claim 18
Dependent Claim
50 words
A method according to claim 1 in which the second web comprises a high density polyethylene plastic material having a melting temperature within the range of 110°-150° C., wherein the second storage reel of second web of material is brought to a temperature corresponding to 50-95% of the melting temperature.
Claim 19
Dependent Claim
18 words
A method according to claim 17, wherein the second web is brought to a temperature of 70° C.
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) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |