Metallizable multi-ply film

Details Metallizable multi-ply film Metallizable multi-ply film

1988-03-15

1990-12-04

Sluby, P. C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428323, 428516, 428461, 428517, 428412, 428483, 4284758, 4284761, 428513, 428910, 26417716, 26417717, 264205, 264208, B32B 2708, B32B 2732, B65D 6540

Patent

active

049753150

ABSTRACT:
A metallizable, sealable, biaxially stretch-oriented multi-ply film comprises a base layer essentially of polypropylene, a first polyolefinic facing layer and a second polyolefinic facing layer. All of the layers contain a neutralizing agent and a stabilizer against thermal degradation. The neutralizing agent is a calcium carbonate having an absolute particle size of less than 10.0 .mu.m, a mean particle size of less than 0.1 .mu.m, a specific surface area of more than 40 m.sup.2 /g and a whiteness of more than 90% and, the stabilizer comprises a phenolic stabilizer having a molecular weight of more than 1,000 g/mol. One polyolefinic facing layer contains an anti-blocking agent. In addition, a process for producing the metallizable multi-ply film is described, and its use as a packaging material is indicated.

REFERENCES:
patent: 3343663 (1967-09-01), Seidler
patent: 3914521 (1975-10-01), Beatty et al.
patent: 4303708 (1981-12-01), Gebhardt et al.
patent: 4424256 (1984-01-01), Christensen et al.
patent: 4604322 (1986-08-01), Reid
patent: 4666772 (1987-05-01), Schinkel et al.
patent: 4692837 (1987-09-01), Crass et al.

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