US4474635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of selective bonding of textile materials
Assignee: Gates Corp
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Filing: 1983-09-02
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Granted: 1984-10-02
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Expires: 2003-09-02
Abstract
Abstract A cushioned panel is provided together with a method of molding it. A non-woven fabric having an outer layer composed of polypropylene or other thermoplastic fibers is heated to the melting point of the fibers. It is inserted into a mold having a decorative surface fabric and a piece of foam cushioning therein. The mold is designed so that the edges of the male and female mold halves compress the molten non-woven substrate and the surface fabric forcing the molten surface of the substrate into the interstices of the surface fabric. A mechanical bond is formed upon cooling.
Inventors
- 👤 Ronald W. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:18
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/10; B32; B32B; B32B5/00; B32B5/18; B60; B60R; B60R13/00; B60R13/02; B29C44/14; B60R13/0237; B60R13/0243
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
227 words
A method of producing a laminate panel which comprises: providing a first non-woven fabric having at least one outer layer including a thermoplastic fiber material, said thermoplastic fiber material having a melting point which is lower than the melting point of the residue of the first fabric; heating said first fabric to a point above the melting point of said thermoplastic fiber material, but below the melting point of said residue; inserting said heated first fabric within a mold including a male mold half and a female mold half, said female half including a cavity and said male half including a projecting portion partially inserted within said cavity, the surfaces defining said cavity and said projecting portion defining a space therebetween; inserting a second fabric within said mold between said mold halves; inserting a piece of adhesive-free polymeric resin foam between said first and second fabrics within said mold, said piece of foam being at least partially positioned within said space; applying pressure by means of said mold such that a portion of said molten thermoplastic fiber material of said first fabric penetrates said second fabric; and cooling said first fabric such that a mechanical bond is formed between said first and second fabrics, said piece of foam being locked between said first and second fabrics but free of adhesive bonds to the first and second fabrics.
Claim 2
Independent Claim
227 words
A method of producing a laminate panel which comprises: providing a first non-woven fabric having at least one outer layer including a thermoplastic fiber material, said thermoplastic fiber material having a melting point which is lower than the melting point of the residue of the first fabric; heating said first fabric to a point above the melting point of said thermoplastic fiber material, but below the melting point of said residue; inserting said heated first fabric within a mold including a male mold half and a female mold half, said female half including a cavity and said male half including a projecting portion partially inserted within said cavity, the surfaces defining said cavity and said projecting portion defining a space therebetween; inserting a second fabric within said mold between said mold halves; inserting a piece of adhesive-free polymeric resin foam between said first and second fabrics within said mold, said piece of foam being at least partially positioned within said space; applying pressure by means of said mold such that a portion of said molten thermoplastic fiber material of said first fabric penetrates said second fabric; and cooling said first fabric such that a mechanical bond is formed between said first and second fabrics, said piece of foam being locked between said first and second fabrics but free of adhesive bonds to the first and second fabrics.
Claim 3
Dependent Claim
57 words
A method as described in claim 1 wherein said space defined within said mold includes at least one tapered area, said first and second fabrics being subjected to relatively high pressure within said tapered area such that bonding occurs therein, the pressure exerted on said foam and fabrics in the remainder of said space being relatively low.
Claim 4
Dependent Claim
54 words
A method as described in claim 2 wherein a relatively small portion of said foam piece extends within said tapered area, said small portion of said foam being partially compressed during the applying of pressure by means of said mold thereby locking said foam piece securely in place between said first and second fabrics.
Claim 5
Dependent Claim
63 words
A method as described in claim 2 wherein said space is symmetrical and includes a pair of opposing tapered areas, relatively small opposing portions of said foam piece extending into each of said tapered areas and being partially compressed during the applying of pressure by means of said mold thereby locking said foam piece securely in place between said first and second fabrics.
Claim 6
Dependent Claim
23 words
A method as described in claim 1, wherein said first fabric is a non-woven fabric and said second fabric includes a decorative surface.
Claim 7
Dependent Claim
37 words
A method as described in claim 2 wherein a portion of said first fabric is compressed within said tapered area, the bonding of said first and second fabrics occurring at portions where said first fabric is compressed.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |