U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Molded surface fastener and method for manufacturing the same

Patent 5620769 Issued on April 15, 1997. Estimated Expiration Date: Icon_subject May 2, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3168605

3230134

3399425

3594863

3594865

3608035

3758657

Method for making self-gripping devices having integral trains of gripping elements
Patent #: 4001366
Issued on: 01/04/1977
Inventor: Brumlik

Process of making a conveyor belt
Patent #: 4769202
Issued on: 09/06/1988
Inventor: Eroskey ,   et al.

Fastener component
Patent #: 4931344
Issued on: 06/05/1990
Inventor: Ogawa, et al.

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Inventors

Assignee

Application

No. 433200 filed on 05/02/1995

US Classes:

428/100, Hook or barb24/442, INCLUDING READILY DISSOCIABLE FASTENER HAVING NUMEROUS, PROTRUDING, UNITARY FILAMENTS RANDOMLY INTERLOCKING WITH, AND SIMULTANEOUSLY MOVING TOWARDS, MATING STRUCTURE (E.G., HOOK-LOOP TYPE FASTENER)24/444, With feature facilitating, enhancing, or causing attachment of filament mounting surface to support therefor24/445, Having filaments formed from continuous element interwoven or knitted into distinct, mounting surface fabric24/452, Having mounting surface and filaments constructed from common piece of material156/244.15, Specific nonuniform lamina or article; e.g., netting or rib and groove, etc.264/136, Impregnation of batt, sheet, or filament264/167, Of varying cross-sectional area or with intermittent cross-sectional irregularity264/171.13, Utilizing indefinite length preform264/173.1, Including roller-type shaping surface (e.g., calendering, etc.)264/177.19, Temperature specified (other than ambient)264/257, One component is a fibrous or textile sheet, web, or batt264/328.8, With multiple injectors, mold cavities, or multiple steps of injection of material425/115, Endless surface means to shape fluent material425/327, Reshaping or vulcanizing means is a press428/120Inward from edge of web or sheet

Examiners

Primary: Thurlow, Jeffery

Attorney, Agent or Firm

International Classes

A44B 018/00
B29C 047/02

Abstract

In a molded surface fastener manufacturing method, molten resin is injected or extruded from an injection die or an extrusion nozzle, and at the same time, a coarse mesh core sheet is introduced between the extruded molten resin and the circumferential surface of a die wheel, which has a multiplicity of hook-element-forming circumferential cavities. The core sheet is forced against the circumferential surface of the die wheel by a pressing force of a press roller or under a molten resin pressure at the time of injection to pass part of the molten resin through pores of the core sheet and to fill in the hook-element-forming cavities. As a result, a multiplicity of hook elements are molded, and at the same time, the core sheet is embedded integrally in a plate-shaped substrate sheet closer to the hook-element-surface side.

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