Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work – Work is organic material
Patent
1975-01-14
1977-04-05
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
Work is organic material
264 92, 264274, 264278, 425388, B29C 1704, B29D 302
Patent
active
040162303
ABSTRACT:
The invention relates to the production of an article such as a pallet by a vacuum moulding technique in which a substantially two dimensional array of reinforcement elements is supported above a vacuum forming table on a first section or sections of said table movable upwards from a second section or sections of said table, a hot sheet of thermoplastic material being positioned over said reinforcement array and drawn down and around underneath said reinforcement by the application of a vacuum applied through said second section or sections, said first section or sections then being retracted to a position substantially flush with said second section or sections once said thermoplastic material is capable of supporting said reinforcement above said second section or sections and said vacuum then drawing said thermoplastic material down and around underneath said reinforcement elements above said first section or sections.
REFERENCES:
patent: 2361348 (1944-10-01), Dickson et al.
patent: 3238287 (1966-03-01), Chapman
patent: 3875280 (1975-04-01), Story
Brigend Investments Limited
Silbaugh Jan H.
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