Method and apparatus for the manufacture of plastic bags in pair

Details Method and apparatus for the manufacture of plastic bags in pair Method and apparatus for the manufacture of plastic bags in pair

1988-04-01

1990-03-06

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493235, 493194, 493195, 493 11, 493926, 493 29, B31B 2374, B31B 2360, B31B, B31B 2314

Patent

active

049062280

ABSTRACT:
The invention relates to a process and apparatus for the paired manufacture of carry bags from synthetic resin sheeting with lateral weld seams and an approximately sinusoidal load-bearing rim with punched-in handle openings, wherein a laid-flat tubular film is cut open in wave shape, and the two cut-apart semitubular sheets (1a, 1b) are pulled apart transversely to the conveying direction, the wave crests are folded over at least in part in parallel to the folding edges (3) in each case either toward the outside or toward the inside, then the semitubular sheets are again united in order to compensate for at least a portion of the gap S produced by folding over the flaps, and after achieving a synchronous run of the folded over flaps (51, 52), the latter are welded to the lower and upper sheet layers (10a, 10b) of the semitubular sheets (1a, 1b) in the area (15) surrounding the subsequent handle opening (4), the wave crests, prior to being folded over, being electrically discharged and, after having been folded over, being again charged electrically prior to the provision of the weld bond.

REFERENCES:
patent: 4182222 (1980-01-01), Stahl
patent: 4605392 (1986-08-01), Achelpohl
patent: 4702731 (1987-10-01), Lambrecht
patent: 4704100 (1987-11-01), Kaufman

Affiliated with

Also associated with

Rating

Method and apparatus for the manufacture of plastic bags in pair 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 and apparatus for the manufacture of plastic bags in pair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the manufacture of plastic bags in pair will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-44541