Method for manufacturing gas permeable packaging material

Details Method for manufacturing gas permeable packaging material Method for manufacturing gas permeable packaging material

1986-03-05

1987-04-14

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156252, 156253, 426124, 428137, 428213, 428219, 4283166, B32B 3114

Patent

active

046576100

ABSTRACT:
A method of manufacturing a gas permeable packaging material, which comprises the steps of forming a laminate composed of an outer plastic film and a gas permeable inner sheet with a first heat-sealable layer interposed therebetween, perforating the laminate with a number of micro-pores, which extend from the outer film side to at least the inner sheet, heat-sealing a second heat-sealable film with or without a number of small-pores to the inner sheet, and, if the second heat-sealable film is of no porous, forming a number of small-pores in the second heat-sealable film, a pore ratio of the second heat-sealable film being greater than that of the outer film.

REFERENCES:
patent: 3674109 (1972-07-01), Murase
patent: 4262050 (1981-04-01), Jenkins
patent: 4332845 (1982-06-01), Nawata et al.
patent: 4485133 (1984-11-01), Ohtsuka et al.
patent: 4487791 (1984-12-01), Kamatsu et al.
patent: 4567080 (1986-01-01), Korsgaard
patent: 4579223 (1986-04-01), Otsuka et al.

Affiliated with

Also associated with

Rating

Method for manufacturing gas permeable packaging 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 manufacturing gas permeable packaging material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing gas permeable packaging material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1783317