Back to results
US 7,067,185 B2Granted
Reinforced hook web
Assignee3M Innovative Properties Company
InventorsRonald W. Ausen, Jayshree Seth
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
Assignee3M Innovative Properties Company
InventorsRonald W. Ausen, Jayshree Seth
Estimating the term…
A unitary fastener of a thermoplastic resin comprising a base film layer having generally parallel upper and lower major surfaces, arranged in a first direction the base film layer being oriented at least in the first direction. The backing layer having on at least one surface separated surface elements extending at an angle to said first direction. The invention is also related to a method of forming a unitary fastener. The method includes the steps of extruding a thermoplastic resin in a machine direction through a die plate having a continuous base portion cavity and one or more rib cavities extending from the base portion cavity, forming a strip having a base layer and continuous rib. This scoring or cutting the ribs and at least a surface layer of the film structure forms predetermined separable elements. This inelastically stretching the strip to separated projections and the separated separable surface elements across the strip. The spacings between adjacent separated separable surface elements comprises an oriented film.
A unitary fastener of a thermoplastic resin comprising a film backing having upper and lower major surfaces, with spaced separated projection members arranged in a row in a first direction on one major surface, the film backing being oriented at least in the first direction, the film backing further having on the opposite one major surface separated continuous surface elements extending at an angle to said first direction.
Dependencies are inferred from the claim text.