Cross-tearable decorative sheet material
AssigneeClopay Corporation
InventorsLeopoldo V. Cancio, Pai-Chuan Wu
Life of this patent
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Abstract
A decorative plastic sheet material having intersecting tear lines formed in the surface of the sheet material whereby the material may be torn by hand in more than one direction. The decorative sheet material is composed of a polymeric material incorporating a dispersed phase. The sheet material is particularly suited for the manufacture of decorative surface coverings such as shelf liners and the like which require sizing of the material in both a lengthwise and widthwise direction to conform it to the dimensions of the surface being covered.
Claims20
A method of producing a plastic film which may be torn by hand along one or more hand-tear lines without the use of cutting tools comprising the steps of:
- providing a polymeric material,
- introducing into said polymeric material a material forming a dispersed second phase in a matrix of said polymeric material,
- forming said polymeric material containing said dispersed second phase into a film, and
- embossing said film to form one or more substantially continuous, imperforate hand-tear lines of reduced film thickness therein,
- said material forming said dispersed second phase being present in said film in an amount effective to initiate and propagate tear along said hand-tear lines by hand-tearing without the use of cutting tools.
A hand-tearable plastic film which may be torn by hand along one or more hand-tear lines without the use of cutting tools comprising an embossed polymeric film having one or more substantially continuous imperforate hand-tear lines of reduced film thickness, said film being formed of a polymeric matrix containing a dispersed second phase in an amount effective to initiate and propagate tear along said hand-tear lines such that said film may be torn by hand without the use of cutting tools.
Dependencies are inferred from the claim text.