Method of making a mushroom-type hook strip for a mechanical fas

Details Method of making a mushroom-type hook strip for a mechanical fas Method of making a mushroom-type hook strip for a mechanical fas

1996-10-25

1999-03-09

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Of varying cross-sectional area or with intermittent...

264169, D01D 520

Patent

active

058796045

ABSTRACT:
A mushroom-type hook strip for a hook-and-loop fastener has a flexible backing of thermoplastic resin and, integral with backing, an array of upstanding stems distributed across at least one face of the backing, each having a mushroom head. The stems have a molecular orientation as evidenced by a birefringence value of at least 0.001. The mushroom-type hook strip can be produced continuously by injecting resin into cavities of a cylindrical mold while evacuating and cooling the cavities so that the cooled resin becomes molecularly oriented, thus affording to the stems excellent stiffness, durability, and tensile and flexural strength.

REFERENCES:
patent: 2717437 (1955-09-01), De Mestral
patent: 3009235 (1961-11-01), De Mestral
patent: 3027595 (1962-04-01), Takai et al.
patent: 3192589 (1965-07-01), Pearson
patent: 3235438 (1966-02-01), Wisotzky
patent: 3270408 (1966-09-01), Nealis
patent: 3312583 (1967-04-01), Rochlis
patent: 3408705 (1968-11-01), Kayser et al.
patent: 3555601 (1971-01-01), Price
patent: 3594863 (1971-07-01), Erb
patent: 3594865 (1971-07-01), Erb
patent: 3718725 (1973-02-01), Hamano
patent: 3762000 (1973-10-01), Heasin et al.
patent: 4290174 (1981-09-01), Kalleberg
patent: 4315885 (1982-02-01), Lemelson
patent: 4454183 (1984-06-01), Wollman
patent: 4872243 (1989-10-01), Fischer
patent: 5607635 (1997-03-01), Melbye et al.
PCT Search Report for PCT/US91/105874 (corresponding to U.S. 07/585,990) of which 07/789,594 is a division-the new application is a continuation of 07/789,594.
Injection Molding Handbook, Edited by Dominic V. Rosato et al, Van Nostrand Reinhold Co;, New York; 1986; pp. 504-506, 596, 619-621, 753-756.

Affiliated with

Also associated with

Rating

Method of making a mushroom-type hook strip for a mechanical fas does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a mushroom-type hook strip for a mechanical fas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a mushroom-type hook strip for a mechanical fas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1317561