Multi-ply film articles

Claim 2

A flat flexible multi-ply plastic film article comprising a first ply of flat flexible plastic film superimposed over a second ply of flat flexible plastic film, having opposite edges thereof joined and an openable end with substantially aligned edges, characterized by a portion of said first ply of film defining the openable end being puckered and non-uniformly distorted, separating a portion of the confronting face of said first ply of film from the opposed confronting face of said second ply of film and displacing a portion of said aligned edge of said first ply of film relative to the opposing aligned edge of said second ply of film, said displaced edge portion of film being contracted and drawn back generally towards a central portion of said article, whereby the distorted portion of film provides means for grasping and readily separating the confronting faces of said first and second plies of film.

Claim 3

The film article of claim 1 wherein said first and second plies of film exhibit heat-shrinkable properties.

Claim 4

The film article of claim 1 wherein said film article is a bag.

Claim 5

The film article of claim 1 wherein said film article is a tube.

Claim 6

The film article of claim 1 wherein the portion of the first ply of film distorted extends across the width of said open end.

Claim 7

The film article of claim 1 comprising at least two spaced-apart portions of distortion in said first ply of film.

Claim 8

The film article of claim 1 wherein a portion of said second ply of film is distorted, the distortion in said second ply of film being different from the distortion in said first ply of film.

Claim 9

A continuous strip of separable flat flexible multi-ply plastic film articles comprising a length of a first ply of flat flexible plastic film superimposed over a second ply of a flat flexible plastic film said superimposed plies of film being joined along at least one pair of congruent longitudinal edges thereof and having a plurality of spaced-apart transverse seams to form a plurality of interconnected separable bags having openable ends each of said ends having substantially aligned edges, each of said bags being separable along transverse lines of weakness in said plies of film, at least a portion of said first ply of film defining the openable end in each of said bags, said portion being puckered and non-uniformly distorted, separating a portion of the confronting face of said first ply of film from the opposed confronting face of said second ply of film and displacing a portion of said aligned edge of said first ply of film at the openable end of each of said bags relative to the opposing aligned edge of said second ply of film, said displaced edge portions of film being contracted and drawn back generally towards the opposite closed edges of each bag, whereby the distorted portion of film provides means for grasping and readily separating the confronting faces of the film.

Claim 10

A continuous strip of separable flat flexible multi-ply plastic film articles comprising a length of a first ply of flat flexible plastic film superimposed over a second ply of a flat flexible plastic film said superimposed plies of film being joined along at least one pair of congruent longitudinal edges thereof and having a plurality of spaced-apart transverse seams to form a plurality of interconnected separable bags having openable ends each of said ends having substantially aligned edges, each of said bags being separable along transverse lines of weakness in said plies of film, at least a portion of said first ply of film defining the openable end in each of said bags, said portion being puckered and non-uniformly distorted, separating a portion of the confronting face of said first ply of film from the opposed confronting face of said second ply of film and displacing a portion of said aligned edge of said first ply of film at the openable end of each of said bags relative to the opposing aligned edge of said second ply of film, said displaced edge portions of film being contracted and drawn back generally towards the opposite closed edges of each bag, whereby the distorted portion of film provides means for grasping and readily separating the confronting faces of the film.

Claim 11

The continuous strip of articles of claim 8 wherein joined congruent longitudinal edges of said plies of film define opposite side edges of each of the bags in said interconnected strip of bags and a transverse seam joins the superimposed plies of film to form the bottom edge of each of said bags.

Claim 12

The continuous strip of articles of claim 8 wherein one pair of congruent longitudinal edges defines an openable end in each of said separable bags, said spaced-apart transverse seams define opposite side edges of each of said bags, and said transverse lines of weakness are located between seams forming the side edges of successive bags in the strip of bags.