Mold-in touch fastening product

• US 9,918,526 B2
• Filed: 06/17/2015
• Issued: 03/20/2018
• Est. Priority Date: 06/17/2015
• Status: Active Grant

• Current Assignee: Velcro IP Holdings LLC
• Original Assignee: Velcro BVBA
• Inventors: Mascarenhas, Karl S., Cina, Michael, Voigt, Paul Joseph
• Primary Examiner(s): Sandy, Robert
• Assistant Examiner(s): Mercado, Louis A
• Application Number:
  US14/741,706
• Publication Number:
  US 20160366992A1
• Time in Patent Office: 1,007 Days
• CPC Class Codes: A44B 18/0061 Male or hook elements A44B18/0053 takes precedence
• CPC Class Codes: A44B 18/0076 Adaptations for being fixed to a moulded article during moulding
• CPC Class Codes: A44B 18/008 Hooks or loops provided with means to reinforce the attachment, e.g. by adhesive means tab fastener elements for absorbent pads combining adhesive and mechanical fastening A61F13/581

Abstract

A male touch fastener strip includes an elongated base and a field of male fastener elements each having a stem extending from a broad face of the base and a head for engaging fibers. The fastener element stems and broad face of the base together form a unitary mass of resin, such as a resin containing a magnetically attractable substance. Wings extend from respective longitudinal edges of the base and define discrete corrugations extending in a series along the fastener strip and forming corresponding undulations in the rear face of the strip along its longitudinal edges. The corrugated wings can also support a foam gasket.

Claims

1. A male touch fastener strip having a front fastening face and a rear face, the strip comprising:

an elongated base of a material comprising a magnetically attractable substance dispersed throughout a synthetic resin; and

a field of exposed male fastener elements each having a stem extending from the base on the front fastening face of the strip;

wherein the base has an areal heat capacity of between about 15 and 65 milli-Joules per square centimeter degree C.

2. The touch fastener strip of claim 1, wherein the magnetically attractable substance comprises between about 30 and 40 percent of the material, by weight.

3. The touch fastener strip of claim 1, wherein the areal heat capacity is between about 45 and 65 milli-Joules per square centimeter degree C.

4. The touch fastener strip of claim 1, wherein the magnetically attractable substance is in a form of discrete particles of the substance dispersed throughout the synthetic resin.

5. The touch fastener strip of claim 1, further comprising a pair of wings, each wing extending from a respective longitudinal edge of the base and angled, in an unloaded state, toward the rear face of the strip.

6. The touch fastener strip of claim 5, further comprising longitudinal walls rising from the base on either side of the field of male fastener elements and inboard of the wings.

7. The touch fastener strip of claim 5, wherein each wing defines discrete corrugations extending in a series along the fastener strip and forming corresponding undulations in the rear face of the strip along longitudinal edges of the fastener strip.

8. The touch fastener strip of claim 7, wherein the corrugations define a corrugation amplitude, at outer edges of the wings, of at least twice a nominal edge thickness of the wings.

9. The touch fastener strip of claim 7, wherein the corrugations feature a saw tooth profile at outboard edges of the wings.

10. The touch fastener strip of claim 7, wherein each wing carries a respective strip of foam adhered to the wing on a same side of the fastener strip as the fastener elements.

11. The touch fastener strip of claim 10, wherein the strips of foam overlay the corrugations.