Process for producing film and sheet materials from thermoplasti

Details Process for producing film and sheet materials from thermoplasti Process for producing film and sheet materials from thermoplasti

1981-12-11

1985-03-26

Thurlow, Jeffery

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624421, 264 459, 264514, 264564, 264173, 4251311, 4251331, B29F 310

Patent

active

RE0318566

ABSTRACT:
Thermoplastic materials which have hot tack and which are incapable of being independently processed by the blown film process due to the tack they show in hot state and especially in the as extruded state are processed to film and sheet by the blown film process by extruding and inflating in a manner known per se an at least two-ply tubular film or sheet of thermoplastic material, the inner ply being formed by a tack-free thermoplastic material and the outer ply superposed thereon being formed by said hot-tacky thermoplastic material; slitting the double-ply tubing for storage and after flattening at least at one edge, and arranging the film web, preferably with winding-up, together with the web of tack-free material in such a manner that one web having hot tack alternates with one tack-free web. The multi-ply film and sheet materials produced by the process are comprised by the invention.

REFERENCES:
patent: 3187982 (1965-06-01), Underwood et al.
patent: 3223761 (1965-12-01), Raley
patent: 3299192 (1967-01-01), Lux
patent: 3322870 (1967-05-01), Sacks
patent: 3337665 (1967-08-01), Underwood et al.
patent: 3567539 (1971-03-01), Schirmer
patent: 3880691 (1975-04-01), Pannenbecker et al.
patent: 4048428 (1977-09-01), Baird, Jr. et al.
patent: 4379117 (1983-04-01), Baird, Jr. et al.

Affiliated with

Also associated with

Rating

Process for producing film and sheet materials from thermoplasti does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing film and sheet materials from thermoplasti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing film and sheet materials from thermoplasti will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1287558