Process for production of a bag having linear ribs

Details Process for production of a bag having linear ribs Process for production of a bag having linear ribs

1994-07-01

1996-03-26

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156201, 156209, 156219, 156267, 156290, 1563084, 156311, 264145, 264284, 264293, B32B 3118, B32B 3120

Patent

active

055017576

ABSTRACT:
A process for production of a bag having linear ribs uses an apparatus for forming linear ribs which comprises a plate mold having linear protrusions on both faces thereof and upper and lower female molds placed at both sides of the mold, having penetrated linear cavities at positions corresponding to those of the linear protrusions and capable of opening and closing as desired. Multi-layer resin films are inserted between the plate mold and the female molds. The molds are heated and pressed to each other to prepare multi-layer resin films having linear ribs. A bag is produced using the multi-layer resin film having linear ribs thus prepared. Ribs convex to the outside can be formed on the multi-layer film comprising a layer of a resin having a low melting point at the inside and a layer of a resin having a high melting point at an outer side thereof. The self-supporting bag produced by the process has a higher stiffness.

REFERENCES:
patent: 2538920 (1951-01-01), Shumann
patent: 2874751 (1959-02-01), Norton
patent: 3036945 (1962-05-01), Souza
patent: 3799827 (1974-03-01), Takimoto et al.
patent: 4055109 (1977-10-01), Kan
patent: 4526565 (1985-07-01), Hummel et al.
patent: 5048977 (1991-09-01), Robbins, III
patent: 5352043 (1994-10-01), Takagaki et al.

Affiliated with

Also associated with

Rating

Process for production of a bag having linear ribs 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 production of a bag having linear ribs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for production of a bag having linear ribs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-913459