Association of a piece of fabric with a sheet of PVC
OwnerMichel Wajs, Helene Wajsinventors
Life of this patent
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Abstract
The present invention relates to a process for making articles comprising an association, in a generally flat state, of a material having an entangled or interlaced texture, particularly a woven material or other fabric, the cut edges of which may per se unravel or undo or tend to unravel or undo, with a sheet of plastic material, such as polyvinylchloride (PVC), which is a macromolecular material lending itself to be cut and to present a clean edge . . . without any risk of unravelling or undoing.
Claims3
In a process of making a composite article comprising a layer of fabric and a superposed layer of thermoplastic material, the combination of steps of:
- cutting only said fabric to predetermined shape by cutting said fabric along an outer periphery and also along an inner periphery defining an opening in the fabric,
- placing on one side only of said fabric a sheet of said plastic material which completely covers said fabric and extends beyond all peripheral edges of said fabric,
- welding said plastic sheet to said fabric along a first weld line inwardly of the outer periphery of said fabric and along a second weld line adjacent but outwardly of said inner periphery of the fabric,
- cutting said plastic sheet along a first line inwardly of said first weld line and along a second line outwardly of said second weld line,
- removing that portion of said plastic sheet between said first and second cutting lines, and
- cutting said plastic sheet along a line outwardly of the outer periphery of said fabric to sever a marginal portion of said plastic sheet, and removing the severed marginal portion of said plastic sheet.
Dependencies are inferred from the claim text.