Method for producing sheet material

Details Method for producing sheet material Method for producing sheet material

1977-11-08

1980-01-22

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624414, 15624415, 15624425, 156285, 156290, 156292, 156497, 156500, 156553, A63B 4100

Patent

active

041849043

ABSTRACT:
A method for making a continuous bilaminar planar sheet material utilized for packaging of goods and having raised pockets containing a gas. The sheet material is made by extruding a molten plastic through an extruder having a cylindrical nozzle with an annular circular slot opening, so that a tubular hollow element is formed. A plurality of heating elements are arranged around the circumference of the annular circular slot to maintain the temperature of the extruded material at different temperatures around the circumference of the annular slot.

REFERENCES:
patent: 3011930 (1961-12-01), Dworak
patent: 3142599 (1964-07-01), Chavannes
patent: 3655486 (1972-04-01), Hagino et al.
patent: 3684614 (1972-08-01), Lemelson
patent: 3703430 (1972-11-01), Rich
patent: 3751537 (1973-08-01), Scotto et al.
patent: 3954368 (1976-05-01), Kawakami

Affiliated with

Also associated with

Rating

Method for producing sheet material does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-332961