Films of thermoplastics materials having roughened surfaces

Details Films of thermoplastics materials having roughened surfaces Films of thermoplastics materials having roughened surfaces

1977-12-19

1980-12-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

434 85, 106 325, 427256, 4273935, 4274071, 428323, 428329, 428330, 428331, 428332, 428341, 428143, 428480, 428515, 428910, B32B 330, B32B 522

Patent

active

042423961

ABSTRACT:
Thermoplastics films suitable for use as drafting materials comprise a filled film or a film composite having a filled layer, the fillers having a nominal particle size in the range 4 to 15 .mu.m and providing a roughened surface, and a matt layer adherent to the roughened surface comprising a binding resin and secondary filler particles having a nominal particle size in the range 1 to 15 .mu.m in an amount 10 to 100% by weight and having a coat weight of 0.05 to 2.0 g/m.sup.2. Also relates to a process for producing the films.

REFERENCES:
patent: 3154461 (1964-10-01), Johnson
patent: 3531312 (1970-09-01), Newman
patent: 3790435 (1974-02-01), Tanbe et al.
patent: 3839253 (1974-10-01), Kershaw et al.

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