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US4655861A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for producing moldings with deformable decorative surface

Assignee: LIGNOTOK GmbH
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Filing: 1984-11-27
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Granted: 1987-04-07
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Expires: 2004-11-27
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Abstract

Abstract A process for producing fibrous material moldings surface-coated with a decorative sheeting is described. Cellulose and/or lignocellulose fibers are mixed with binders and are compressed by single-stage or multistage moldings, so that the decorative sheeting covering the finished molded surface is used as a supporting sheet for the non-woven fabric to be shaped. The fibrous material mixture is placed on the side of the decorative sheeting provided with an adhesive, and thus, a mat fleece whose entire surface is joined to the decorative sheeting is produced therefrom. The adhesive between the decorative sheeting and the non-woven fabric can be an adhesive foam.

Inventors

  • 👤 Gunter H. Kiss

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 01:05
CPC Classifications
B; B27; B27N; B27N3/00; B27N3/005; B32; B32B; B32B7/00; B32B7/04; B32B7/06; B27N3/06; B32B21/00; B32B21/04; B32B21/08; B32B5/00; B32B5/02; B32B5/22; B32B5/24; B32B5/26; B32B7/12; B44; B44C; B44C1/00; B44C1/10; B44C1/105; B32B2262/00; B32B2262/06; B32B2262/062; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 205 words
A process for producing a molding having a detachable protective layer, a thermoplastically deformable decorative sheeting releasably attached to the protective layer, a foamable adhesive layer attached to the decorative layer opposed to the protective layer and a non-woven fibrous mat attached to the foamable adhesive layer comprising the steps of: drawing the protective layer off from a first reel; drawing the thermoplastically deformable decorative sheeting off from a second reel; releasably laminating the protective layer to the decorative sheeting; conveying the laminate past a foamable adhesive depositing device while dispensing the foamable adhesive into engagement with the decorative sheeting, the decorative sheeting forming a supporting sheet therefrom; admixing cellulose-containing fibers, thermoplastic individual fibers and at least one binder to form a fibrous material; introducing the fibrous material onto the side of the decorative sheeting carrying the adhesive foam; compressing the fibrous material to a mat fleece whose entire surface is connected to the foamable adhesive to form a composite mat; shaping the composite mat by at least one hot molding step, the hot molding step employing a variable temperature mold having a low temperature zone which comes in contact with the thermoplastically deformable decorative sheeting and higher temperature zone which contacts the fibrous material.
Claim 2
Dependent Claim 205 words
A process for producing a molding having a detachable protective layer, a thermoplastically deformable decorative sheeting releasably attached to the protective layer, a foamable adhesive layer attached to the decorative layer opposed to the protective layer and a non-woven fibrous mat attached to the foamable adhesive layer comprising the steps of: drawing the protective layer off from a first reel; drawing the thermoplastically deformable decorative sheeting off from a second reel; releasably laminating the protective layer to the decorative sheeting; conveying the laminate past a foamable adhesive depositing device while dispensing the foamable adhesive into engagement with the decorative sheeting, the decorative sheeting forming a supporting sheet therefrom; admixing cellulose-containing fibers, thermoplastic individual fibers and at least one binder to form a fibrous material; introducing the fibrous material onto the side of the decorative sheeting carrying the adhesive foam; compressing the fibrous material to a mat fleece whose entire surface is connected to the foamable adhesive to form a composite mat; shaping the composite mat by at least one hot molding step, the hot molding step employing a variable temperature mold having a low temperature zone which comes in contact with the thermoplastically deformable decorative sheeting and higher temperature zone which contacts the fibrous material.
Claim 3
Dependent Claim 36 words
The process according to claim 1, wherein following the production of the molding, the protective layer can be removed in a damage-free manner from the decorative sheeting at a randomly selectable time subsequent to hot molding.
Claim 4
Dependent Claim 28 words
The process according to claim 1, wherein a further thermoplastically deformable backing layer is firmly adhered to the fibrous mat on the side opposite to the decorative sheeting.
Claim 5
Dependent Claim 33 words
The process according to claim 1, wherein a tangled fiber fleece of thermoplastically deformable individual threads with a low weight per unit area is used for the decorative sheeting and/or the backing layer.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-04-06 1990-10-06 1991-04-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-04-06 1994-10-06 1995-04-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-04-06 1998-10-06 1999-04-07 $7700.00 Window Closed / Lapsed

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