Multilayer film material

Details Multilayer film material Multilayer film material

1997-05-15

1999-11-16

Jones, Deborah

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428 343, 428 359, 428 369, 428215, 428222, 220667, B32B 702

Patent

active

059854219

ABSTRACT:
Multilayer film material (22) for manufacturing a pipe-shaped body (21) of tube (17). The film material (22) contains at least one barrier layer (10). The film material (22) is of thickness (d) extending form the outside (14) of the pipe-shaped body (21) to the inside of the same. At least one barrier layer (10) is arranged within a distance (a) of the inside (15) of the pipe-shaped body (21). The distance (a) represents 5 to 40% of the total thickness (d) representing 100 percent. The film material used on a tube exhibits therefore a barrier layer which lies close to the inside of the tube and hence also close to the contents of the tube. Volatile constituents of the tube contents beings able to penetrate essentially only to the barrier layer and are not able to become concentrated in the other, thick layers of the wall.

REFERENCES:
patent: 4181239 (1980-01-01), Heiremans et al.
patent: 5238148 (1993-08-01), Holoubek et al.

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