US3889037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-layered, weldable padded element
Assignee: Dynamit Nobel AG
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Filing: 1974-05-16
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Granted: 1975-06-10
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Expires: 1994-05-16
Abstract
Abstract A multiple-layered padded element weldable in a high-frequency field, for example for use in the automobile industry, includes a layer of PVC foam material provided between a cover layer of a thermoplastic synthetic resin film, and a dimensionally stable bottom layer. The bottom layer is optionally coated with an auxiliary polymeric welding agent and another layer is provided between the PVC foam layer and the dimensionally stable bottom layer. This other layer is joined to the layer of PVC foam material and comprises a welding wad of fibrous material wetted on its surface with a dispersion of a mixture of polyvinyl chloride and polyvinyl acetate.
Inventors
- 👤 Den Berg Heinz Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/70; B29C66/71; B29C66/74; B29C66/748; B29C66/7486; B32B27/00; B32B27/06; B32B27/065; B32B27/30; B32B27/304; B32B5/18; B60; B60N; B60N2/00; B60N2/58; B60N2/5816; B60N2/5866; B60N2/5891; B29C65/14; B29C65/1403; B29C65/1412; B29C66/43; B29C66/436; B29C66/45; B29C66/72; B29C66/727; B29C66/729; B29C66/73; B29C66/737; B29C66/7371; B29C66/73711; B29C66/73713; B29K; B29K2027/00; B29K2105/00; B29K2105/04; B29L; B29L2009/00; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3014; B32B2262/00; B32B2262/02; B32B2262/0246; B32B2262/04; B32B2262/06; B32B2262/062; B32B2307/00; B32B2307/70; B32B2307/732; B32B2307/734; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/652
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A MULTIPLE-LAYERED PADDED ELEMENT WELDABLE IN A HIGHFREQUENCY FIELD, FOR EXAMPLE FOR USE IN THE AUTOMOBILE INDUSTRY, COMPRISING A LAYER OF PVC FOAM MATERIAL PROVIDED BETWEEN A COVER LAYER OF A THERMOPLASTIC SYNTHETIC RESIN FILM, AND A DIMENSIONALLY STABLE BOTTOM LAYER, OPTIONALLY COATED WITH AN AUXILIARY POLYMERIC WELDING AGENT, AND A LAYER PROVIDE BETWEEN THE PVC FOAM LAYER AND THE DIMENSIONALLY STABLE BOTTOM LAYER, SAID LAYER BEING JOINED TO THE LAYER OF PVC FOAM MATERIAL AND COMPRISING A WELDING WAD OF FIBROUS MATERIAL WETTED ON ITS SURFACE WITH A DISPERSION OF A MIXTURE OF POLYVINYL CHLORIDE AND POLYVINYL ACETATE.
Claim 2
Dependent Claim
99 words
A MULTIPLE-LAYERED PADDED ELEMENT WELDABLE IN A HIGHFREQUENCY FIELD, FOR EXAMPLE FOR USE IN THE AUTOMOBILE INDUSTRY, COMPRISING A LAYER OF PVC FOAM MATERIAL PROVIDED BETWEEN A COVER LAYER OF A THERMOPLASTIC SYNTHETIC RESIN FILM, AND A DIMENSIONALLY STABLE BOTTOM LAYER, OPTIONALLY COATED WITH AN AUXILIARY POLYMERIC WELDING AGENT, AND A LAYER PROVIDE BETWEEN THE PVC FOAM LAYER AND THE DIMENSIONALLY STABLE BOTTOM LAYER, SAID LAYER BEING JOINED TO THE LAYER OF PVC FOAM MATERIAL AND COMPRISING A WELDING WAD OF FIBROUS MATERIAL WETTED ON ITS SURFACE WITH A DISPERSION OF A MIXTURE OF POLYVINYL CHLORIDE AND POLYVINYL ACETATE.
Claim 3
Dependent Claim
25 words
The padded element according to claim 1, wherein the welding wad is produced from infusible cellulose fibers, acrylic fibers, or the like fibrous polymeric material.
Claim 4
Dependent Claim
46 words
The padded element according to claim 1, wherein the welding wad consists of about 50 pErcent by weight of fibers and 50 percent by weight of the mixture of polyvinyl chloride and polyvinyl acetate, said mixture containing at least 10 percent by weight of polyvinyl acetate.
Claim 5
Dependent Claim
41 words
The padded element according to claim 1, wherein the PVC foam material in the form of panels is joined with firm adherence to the likewise panel-type welding wad, by an initial melting of the synthetic resin components caused by infrared radiators.
Claim 6
Dependent Claim
21 words
The padded element according to claim 1, wherein the cover layer is made of PVC film, the bottom layer is cardboard.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |