Method for manufacturing article with integrally formed...

Details Method for manufacturing article with integrally formed... Method for manufacturing article with integrally formed...

2004-02-25

2008-10-21

Lee, Edmund H. (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C264S328100, C264S334000, C264S337000, C425S441000, C425SDIG058

Reexamination Certificate

active

07438845

ABSTRACT:
A molded article having a field of molded hooks formed integrally thereon is made in a mold in which the hook-forming cavities are on a surface of a retractable mold insert. The insert is retracted from the molded article prior to the article's release from the mold, so that the molded hooks do not experience excessive shear forces as the article is removed from the mold cavity. The invention is especially useful when the draft angle of the hook-bearing surface of the molded article is less than about 45°.

REFERENCES:
patent: 3762000 (1973-10-01), Menzin et al.
patent: 5656226 (1997-08-01), McVicker
patent: 6059558 (2000-05-01), Buzzell et al.
patent: 6187247 (2001-02-01), Buzzell et al.
patent: 6224364 (2001-05-01), Harvey
patent: RE37338 (2001-08-01), McVicker
patent: 6898804 (2005-05-01), Sandler
patent: 2004/0134100 (2004-07-01), McVicker
patent: 2004/0137192 (2004-07-01), McVicker
patent: 2004/0139585 (2004-07-01), McVicker
patent: 2004/0154083 (2004-08-01), McVicker
patent: 2005/0184216 (2005-08-01), McVicker

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