Vacuum mold for manufacturing cushions with back-foamed covers

Details Vacuum mold for manufacturing cushions with back-foamed covers Vacuum mold for manufacturing cushions with back-foamed covers

1988-09-13

1989-10-24

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

264 465, 264 468, 264DIG64, 264DIG78, 249 96, 425117, 4253871, 425388, B29C 4514, B32B 518

Patent

active

048758434

ABSTRACT:
The invention relates to a vacuum mold for manufacturing cushions with back-foamed covers, wherein a section of cover material is stretched across a mold cavity, held down at the rim of the cavity, but allowed to slide into the mold cavity under the influence of a vacuum. The cover is also placed against and fitted to contourings (ridges and/or grooves) of the mold cavity, and subsequently back-foamed. The resulting flexible foam core is allowed to harden and the finished cushion is removed from the form.

REFERENCES:
patent: 3655840 (1972-04-01), Krug
patent: 3943215 (1976-03-01), Grune et al.
patent: 4117068 (1978-09-01), Miller
patent: 4759700 (1988-06-01), Onnenberg et al.

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