Vacuum sheet

Details Vacuum sheet Vacuum sheet

1984-10-31

1986-03-18

Kittle, John E.

Stock material or miscellaneous articles

Sheets or webs edge spliced or joined

Sheets or webs coplanar

428 58, 355 91, 355129, 355132, B32B 314, G03B 2760

Patent

active

045768234

ABSTRACT:
There is described an improved vacuum sheet for use in contact vacuum frames, the sheet including at least two planar sheets of material joined together to form a seam therebetween, and a third planar sheet of material applied to one side of said at least two sheets to be substantially centered over the seam formed therebetween.

REFERENCES:
patent: 324960 (1885-08-01), Sack
patent: 3420608 (1969-01-01), Canale

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