US4333786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminating
Assignee: BASF Corp
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Filing: 1980-02-27
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Granted: 1982-06-08
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Expires: 2000-02-27
Abstract
Abstract Process for laminating. A macroapertured thermoplastic web is brought continuously into contact with the hot moving surface of a rotating roll. A fabric is pressed against the thermoplastic material on the roll and, within about five seconds, the fabric carrying the hot thermoplastic material is continuously peeled off the roll. The resulting fabric, carrying hot thermoplastic material, is then brought into contact with a preformed cellular layer.
Inventors
- 👤 Frank P. Civardi
- 👤 Stanley G. Sova
- 👤 Milan J. Getting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; B; B32; B32B; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B27/40; B32B37/00; B32B37/12; B32B37/1284; B32B5/00; B32B5/02; B32B5/026; B32B7/00; B32B7/04; B32B7/12; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2305/00; B32B2305/02; B32B2305/022; B32B2305/10; B32B2305/18; B32B2305/186; B32B2327/00; B32B2327/06; B32B2375/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249982; Y10T428/249984
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
262 words
Process for making a laminate which comprises: (a) continuously feeding a macro-apertured solid web of thermoplastic polymer into contact with a hot moving surface of a continuously rotating roll, the temperature of said hot surface being above the melting temperature of said polymer, said macro-apertured polymer web having a thickness of at least about 0.07 mm and weighing about 10 to 100 grams per square meter, the polymer portions of the web thickness which are in contact with said hot surface becoming molten and adhering to said hot surface while the polymer portions of the web thickness which are more remote from said hot surface become at least softened, (b) continuously feeding a fibrous web to said roll so that said fibrous web is in contact with said polymer on said hot surface, (c) maintaining said thermoplastic polymer in macro-apertured condition on said surface substantially without relative movement between surface and said polymer, (d) during said period pressing said fibrous web against said thermoplastic polymer on said hot surface to such an extent that portions of said thermoplastic polymer adjacent to said porous web penetrate into said fibrous web and are molded around surface fibers thereof while molten portions of said thermoplastic polymer remain exposed at the surface of said fibrous web and then (e) within 5 seconds of said contact in step a, continuously peeling said fibrous web away from said hot roll surface so that said fibrous web removes, from said hot roll surface, said molded portions of said thermoplastic polymer and at least part of said molten exposed portions.
Claim 2
Dependent Claim
262 words
Process for making a laminate which comprises: (a) continuously feeding a macro-apertured solid web of thermoplastic polymer into contact with a hot moving surface of a continuously rotating roll, the temperature of said hot surface being above the melting temperature of said polymer, said macro-apertured polymer web having a thickness of at least about 0.07 mm and weighing about 10 to 100 grams per square meter, the polymer portions of the web thickness which are in contact with said hot surface becoming molten and adhering to said hot surface while the polymer portions of the web thickness which are more remote from said hot surface become at least softened, (b) continuously feeding a fibrous web to said roll so that said fibrous web is in contact with said polymer on said hot surface, (c) maintaining said thermoplastic polymer in macro-apertured condition on said surface substantially without relative movement between surface and said polymer, (d) during said period pressing said fibrous web against said thermoplastic polymer on said hot surface to such an extent that portions of said thermoplastic polymer adjacent to said porous web penetrate into said fibrous web and are molded around surface fibers thereof while molten portions of said thermoplastic polymer remain exposed at the surface of said fibrous web and then (e) within 5 seconds of said contact in step a, continuously peeling said fibrous web away from said hot roll surface so that said fibrous web removes, from said hot roll surface, said molded portions of said thermoplastic polymer and at least part of said molten exposed portions.
Claim 3
Dependent Claim
15 words
Process as in claim 1 in which said macro-apertured web is of thermoplastic elastomeric polyurethane.
Claim 4
Dependent Claim
26 words
Process as in claim 1 in which the weight of said macro-apertured web is in the range of about 10 to 50 grams per square meter.
Claim 5
Dependent Claim
53 words
Process as in claim 1 and including the step of (f) continuously feeding a solid cellular elastomer web to bring a solid unmolten face thereof into bonding contact with said molten exposed portions, said cellular web being at least about 0.2 mm thick and weighing at least about 70 grams per square meter.
Claim 6
Dependent Claim
23 words
Process as in claim 4 in which said cellular elastomer web is of microporous polyurethane having a specific gravity of less than 0.4.
Claim 7
Dependent Claim
14 words
Process as in claim 5 in which said specific gravity is greater than 0.2.
Claim 8
Dependent Claim
27 words
Process as in claim 4 in which said cellular elastomer web has a specific gravity below 0.05 and comprises cells which are over 100 microns in diameter.
Claim 9
Dependent Claim
13 words
Process as in claim 7 in which said cellular web is polyurethane foam.
Claim 10
Dependent Claim
18 words
Process as in claim 1 in which the melting temperature of said thermoplastic polymer is above 100° C.
Claim 11
Dependent Claim
51 words
Process as in claim 1 in which said macro-apertured web, when it comes into contact with said hot surface, is also in contact with said fibrous web to such an extent that the open structure of said macro-apertured web becomes anchored to said hot surface without substantial lateral shrinkage or break-up.
Claim 12
Dependent Claim
23 words
Process as in claim 10 in which said macro-apertured web is supported by said fibrous web as it travels to said hot surface.
Claim 13
Dependent Claim
29 words
Process as in claim 8 in which said fibrous web comprises a knitted fabric, one face of which is in contact with said thermoplastic polymer on said hot surface.
Claim 14
Dependent Claim
29 words
Process as in claim 8 in which said fibrous web comprises a woven fabric, one face of which is in contact with said thermoplastic polymer on said hot surface.
Claim 15
Dependent Claim
21 words
Process as in claim 13 in which the opposite face of said fibrous web carries a layer of plasticized polyvinyl chloride.
Claim 16
Dependent Claim
15 words
Process as in claim 14 in which said polyvinyl chloride layer is an embossed layer.
Claim 17
Dependent Claim
29 words
Process as in claim 1 in which said fibrous web is a fabric of interlaced yarns of a plurality of fibers, said fibers being more than 1 cm. long.
Claim 18
Dependent Claim
51 words
Process as in claim 16 and including the step (f) of continuously feeding a second fibrous fabric of interlaced multi-fiber yarns to bring a solid unmolten face of said second fabric into bonding contact with said molten exposed portions, the fibers of said second fabric being more than 1 cm. long.
References Cited (Backward Citations)
US3647594A
Cited
US3410748A
Cited
US3533866A
Cited
US3600250A
Cited
US3660218A
Cited
US3778325A
Cited
US3717528A
Cited
US3666598A
Cited
US4038122A
Cited
US4099943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |