Abstract A packaging article using a thermoplastic film or sheet as a raw material therefor. The packaging article is provided with a bag opening in a region thereof. In forming the article, a front bag panel and a back bag panel are thermally fused together along their peripheral edges except the region defining the bag opening, into a bag form. The bag opening is associated with a flap for closing the same which is formed by extending either the front bag panel or the back bag panel and which has a reinforcing body thermally fused thereto. The reinforcing body is in the form of a laminate consisting of paper or synthetic paper having a thermoplastic layer applied thereto by lamination or by extrusion coating, which thermoplastic layer is thermally fused to the flap simultaneously with thermal fusion of the front and back bag panels. The reinforcing body is provided with an adhesive strip having a length extending throughout the width of the bag opening and a width such that when the flap provided with the reinforcing body is turned in, the adhesive strip is capable of joining the front and back bag panels to seal the entire bag opening. The reinforcing body assists in displaying the packaging article and it extends along the front or back bag panel to maintain or secure the configurational stability of the packaging article.
Inventors
👤 Ichiki Yamagata
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 09:39
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/18
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
170 words
A packaging article formed from a thermoplastic sheet film and comprising a front bag panel and a back bag panel thermally fused together along their peripheral edges and defining a bag opening along one edge thereof, one of said front bag panel or said back bag panel being extended to form a flap on one side of said bag opening, said packaging article being characterized in that said flap has a reinforcing body affixed thereto said reinforcing body comprising paper or synthetic paper having a thermoplastic layer applied thereto, said reinforcing body being thermally fused to said flap by the thermal fusion of said thermoplastic resin layer simultaneously with thermal fusion between said front and back bag panels, and adhesive means provided on the edge of said flap said adhesive means extending throughout the width of said bag opening and said adhesive means having a sufficient width to seal the entire edge of said bag opening when it is turned in along with said flap to close said bag opening.
Claim 2
Dependent Claim
170 words
A packaging article formed from a thermoplastic sheet film and comprising a front bag panel and a back bag panel thermally fused together along their peripheral edges and defining a bag opening along one edge thereof, one of said front bag panel or said back bag panel being extended to form a flap on one side of said bag opening, said packaging article being characterized in that said flap has a reinforcing body affixed thereto said reinforcing body comprising paper or synthetic paper having a thermoplastic layer applied thereto, said reinforcing body being thermally fused to said flap by the thermal fusion of said thermoplastic resin layer simultaneously with thermal fusion between said front and back bag panels, and adhesive means provided on the edge of said flap said adhesive means extending throughout the width of said bag opening and said adhesive means having a sufficient width to seal the entire edge of said bag opening when it is turned in along with said flap to close said bag opening.
Claim 3
Dependent Claim
37 words
A packaging article as set forth in claim 1, wherein said reinforcing body is extended over the entire area of said front or back bag panel and thermally fused thereto, thus increasing the stiffness of the bag.
Claim 4
Dependent Claim
51 words
A packaging article as set forth in claim 1, wherein one of said front and back bag panels consists of a reinforcing body integral with the reinforcing body of said flap and wherein the other bag panel to be thermally fused thereto is formed of a transparent plastic film or sheet.
Claim 5
Dependent Claim
33 words
A packaging article as set forth in claim 1, wherein said reinforcing body includes an attaching hole in substantially the middle thereof which enables the packaging article containing goods therein to be suspended.