Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1973-05-21
1976-01-20
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
100226, 100232, 428192, B30B 704, B32B 302, B32B 3120
Patent
active
039335712
ABSTRACT:
The specification and drawings disclose a method and apparatus of forming foam plastic envelopes by simultaneously engaging two juxtaposed sheets of foam plastic with at least three pairs of opposed jaw members positioned to fully define three marginal edges of an envelope. As shown, the jaw members are positioned in a generally U-shaped pattern so that each pair of jaws completely defines a separate marginal edge. The preferred apparatus of the invention includes first and second opposed platens mounted for movement between a first position in which they are spaced a substantial distance apart and a second position wherein they are relatively closely spaced. Each platen carries at least three jaws including two elongated, spaced, side-by-side jaws and one intermediate jaw which extends transversely between the side-by-side jaws. The jaws on each platen are aligned with corresponding jaws on the opposed platen so that upon relative movement of the platens to the second position, the jaws come into cooperating relationship. Additionally, means are provided for permitting adjustment longitudinally of the side-by-side jaws.
REFERENCES:
patent: 2405675 (1946-08-01), Southwick et al.
patent: 2849050 (1958-08-01), Meyerson
patent: 3503838 (1970-03-01), Marshack
Dawson Robert A.
Donray Products Company
Drummond Douglas J.
Mulholland John H.
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