Delamination resistant spa method of manufacture

Details Delamination resistant spa method of manufacture Delamination resistant spa method of manufacture

1992-06-24

1996-01-09

Fetsuga, Robert M.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264554, 4584, B29C 5110

Patent

active

054826683

ABSTRACT:
A spa having structural integrity is manufactured from a formable sheet contoured by the steps of disposing the formable sheet over a male form adapted for vacuum-forming the formable sheet, heating the formable sheet to a temperature enabling forming thereof, forcing the male form into the formable sheet with some portions of the forced formable sheet having a greater thickness than other portions of the formable sheet, and vacuum-forming the forced heated formable sheet into intimate contact with the male form. Thereafter, a urethane coating is applied to a side of the spa not contacted by the mold. This results in a delamination resistant spa.

REFERENCES:
patent: 4233694 (1980-11-01), Janosko et al.
patent: 4371494 (1983-02-01), Miller
patent: 4844944 (1989-07-01), Graefe et al.

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