Casting a plastic windshield

Details Casting a plastic windshield Casting a plastic windshield

1988-05-31

1989-12-26

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264316, 264336, 264261, 249 82, 249154, B29C 3902

Patent

active

048896780

ABSTRACT:
An elongate packing is sandwiched between two sheet-like mold members in an encircling manner to define a mold cavity therebetween, then a thermosetting plastic material is poured into the mold cavity, and the thermosetting plastic material is heated and set in the mold cavity. The upper and lower mold members are held against deformation transverse thereof so as not to be deformed by the shrinkage of the thermosetting plastic material when the latter is set, and the packing is allowed to move transversely thereof for following the shrinkage of the thermosetting plastic material when the latter is set. In some embodiments, the packing comprises a packing body adapted to be sandwiched between the mold members for preventing the plastic material from flowing out of the mold cavity with a flange joined to the packing body and adapted to be held against peripheral edges of the mold members.

REFERENCES:
patent: 4227673 (1980-10-01), Goodwin et al.

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