Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Reexamination Certificate
2005-04-12
2005-04-12
Sells, James (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
C156S580000, C053S479000, C493S206000
Reexamination Certificate
active
06877543
ABSTRACT:
A sealing assembly (10) for sealing flexible packaging materials comprising: a sealing mechanism for sealing the packaging material; and a spreading mechanism for spreading the packaging material to be sealed prior to sealing, the spreading mechanism including at least two pair of opposed spreading members (15a,15b), each pair having opposing converging contact edges (17a,17b) which engage either side of the packaging material during spreading; wherein the spreading members are mounted for relative movement between a first open orientation and a second closed orientation such that, as the spreading members travel from said first to said second orientation, the contact edges initially contact the packaging material at convergent ends of the contact edges and then proceed to contact the packaging material along the length of the contact edges to divergent ends thereof, and wherein subsequently or simultaneously the spreading members engage the packaging material between the contact edges and travel transversely relative to the packaging material to spread the packaging material.
REFERENCES:
patent: 2916864 (1959-12-01), Meissner
patent: 4067175 (1978-01-01), Vinokur
patent: 4516384 (1985-05-01), Imperiale
patent: 4563862 (1986-01-01), McElvy
patent: 5826405 (1998-10-01), Killinger et al.
patent: 5987854 (1999-11-01), Killinger et al.
patent: 6167681 (2001-01-01), Yano et al.
patent: 6282871 (2001-09-01), Killinger et al.
Cryovac Australia Pty. Ltd.
Quatt Mark B.
Sells James
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