Surface structured film made of thermoplastic and a process to m

Details Surface structured film made of thermoplastic and a process to m Surface structured film made of thermoplastic and a process to m

1991-05-15

1993-09-07

Loney, Donald J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428141, 428167, 428213, 428220, 428332, 428338, 428409, 428910, 264167, 2641771, 26417717, 26417719, 26421112, 264212, 264299, 264319, 264503, 264519, 264540, 264556, B32B 300, B29C 4700

Patent

active

052427374

ABSTRACT:
A biaxial stretch oriented and heat-set film made of thermoplastic is described. The film has, on at least one of its surfaces, a surface roughness (R.sub.a) of greater than 0.003 .mu.m. The surface roughness is the result of an integral texturing of the polymeric film surface. The polymer in the textured area shows essentially the same morphological state as the polymer in the interior of the film itself.

REFERENCES:
patent: 3842152 (1974-10-01), Witfield et al.
patent: 3871947 (1975-03-01), Brekken
patent: 4376147 (1983-03-01), Byrne et al.
patent: 4436520 (1984-03-01), Lipko et al.
patent: 4677188 (1987-06-01), Utsumi et al.
patent: 4794680 (1989-01-01), Meyerhoff et al.
patent: 4840836 (1989-06-01), Eyraud
patent: 5108814 (1992-04-01), Harp et al.
patent: 5143774 (1992-09-01), Carcio et al.

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