US 2019/0053582 A1 · FASTENER ELEMENT SHAPE

Abstract

A touch fastener product having a base sheet with a resin side surface and a male touch fastener element having a head disposed at a distal end of a resin stem and overhanging the base sheet. The head has an overall shape, as projected in a plane parallel to the base sheet, with a perimeter that defines spaced apart extremities corresponding to head sections of different engagement characteristics and disposed at different distances from a centroid of the overall shape. In one example, the head projection has a polygonal perimeter consisting of straight edges of differing lengths connected at radiused corners. In another, the perimeter comprises an unbroken series of at least three arc segments of different curvatures, with centers of the arc segments disposed at different distances from the centroid.

Claims19

Dependent claims

A male touch fastener product, comprising

a base sheet having a resin side surface;
and
a male touch fastener element comprising
a resin stem extending integrally from the resin side surface of the base sheet;
and
a head disposed at a distal end of the stem and overhanging the base sheet on at least three sides of the stem, the head having an underside surface of resin;
wherein the resin side surface of the base sheet, the stem, and the underside surface of the head together form a seamless mass of resin;
wherein the head has an overall shape, as projected in a plane parallel to the base sheet side surface, with a perimeter and an area defining a centroid;
wherein the perimeter defines
at least three spaced-apart extremities that correspond to head sections of different engagement characteristics and are disposed at different distances from the centroid.

7 more elements

Dependencies are inferred from the claim text.

Fastener element shape

Life of this patent

Fastener element shape

Life of this patent

Abstract

Claims19