Deformation-free molded article

Details Deformation-free molded article Deformation-free molded article

1994-12-02

1996-11-19

Watkins, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428167, 428156, 428338, 428220, 428119, 428122, 248300, 2484751, 359844, 359871, 264237, 26432814, 264348, B29D 3100, B29D 1100

Patent

active

055760864

ABSTRACT:
A molded article is formed of a thermoplastic or thermosetting resin and has two planes joining each other in a junction portion; at least one of the two planes has an opening portion or a thin wall portion in the vicinity of the junction portion in order to decrease warpage of the molded article.

REFERENCES:
patent: 2102936 (1937-12-01), Bailey
patent: 3190600 (1965-06-01), Stanley
patent: 3493202 (1970-02-01), Jensen
patent: 4523735 (1985-06-01), Beck et al.
patent: 4732358 (1988-03-01), Hughes et al.
patent: 4789232 (1988-12-01), Urbanek
patent: 4830898 (1989-05-01), Smith
patent: 4856746 (1989-08-01), Wrobel et al.
patent: 5005797 (1991-04-01), Maekawa et al.
patent: 5064162 (1991-11-01), Jondelius
patent: 5198938 (1993-03-01), Ward
patent: 5268795 (1993-12-01), Usami
Kunststoffe, vol. 81, No. 10, Oct. 1991, Muenchen, De, pp. 880-885; Stitz, `Sind Schwindung und Verzug berechenbar geworden?`.

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