Sheet blow molding and molding method

Details Sheet blow molding and molding method Sheet blow molding and molding method

1996-05-30

1998-08-04

Epstein, Henry F.

Stock material or miscellaneous articles

Sheet including cover or casing

Including elements cooperating to form cells

156245, 156292, 428116, B32B 312

Patent

active

057890579

ABSTRACT:
A method for molding a sheet blow molding, wherein a board member as a core of the sheet blow molding is placed between a pair of thermoplastic sheets facing each other and separated by a predetermined distance. Opposite ends of the sheets are clamped by dampers so as to form clamped sheets with a closed space between the clamped sheets. The clamped sheets are heated by a heater and air is supplied to the closed space. The clamped sheets are pressed between molds so as to cover all outer surfaces of the board member and to be thermally bonded to the board member.

REFERENCES:
patent: 2919472 (1960-01-01), Steele
patent: 3103460 (1963-09-01), Picket
patent: 5238725 (1993-08-01), Effing et al.
patent: 5316604 (1994-05-01), Fell
patent: 5328744 (1994-07-01), Kaufmann et al.

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