JPH0369643U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the state in which the sandwich bag is stored inside, Fig. 2 is a schematic diagram showing the state of the film when manufacturing the packaging bag according to this invention, and Fig. 3 is a schematic diagram showing the state of the film shown in Fig. 2. FIG. 2 is a schematic diagram showing a state in which the sheets are polymerized and fused and sealed. 1...Film, 2...Folded portion, 3...Heat seal, 4...Part, 5...Fusion seal.

Amendment 2.7.18 The name of the invention is amended as follows. Title of the invention: Packaging bag The scope of the claims for utility model registration and the brief description of the drawings are amended as follows.

[Claims for Utility Model Registration] (1) Using a film that has heat-sealing properties on both sides, fold the film at two points at a predetermined distance and a predetermined width, and then heat-seal the folded portion and fold it back. The two folded films are polymerized and the two folded parts are melt-sealed into a trapezoidal shape with the upper base between them, and the lower base is formed into an opening, and a sandwich film is placed between the two folded parts. A packaging bag characterized in that the corners of (2) Using a film that has heat-sealing properties on one side, fold the two parts of the heat-sealable side at a predetermined distance and by a predetermined width;
This folded part is heat-sealed to form a folded part, and two of the thus-formed films are superimposed with the folded part facing outward, and then fused and sealed into a trapezoid shape with the top and bottom between both folded parts. A packaging bag characterized in that the lower bottom is formed into an opening, and the corner portions of the sandwich sandwich are located in both the folded portions. (3) The packaging bag according to claim 1 or 2, wherein the folded portion has a width of 20 mm or less.

[Brief explanation of the drawings] Figures 1 to 3 show the first packaging bag according to this invention.
Fig. 1 is an overall schematic diagram, Fig. 2 is a schematic diagram showing one film, Fig. 3 is a schematic diagram showing a melt-cut seal portion of two polymerized films, and Figs. Fig. 6 shows a second embodiment of the packaging bag according to this invention, Fig. 4 is an overall schematic diagram, Fig. 5 is a schematic diagram showing one film, and Fig. 6 is a diagram showing two polymerized films. It is a schematic diagram showing a melt-cut seal part. 1, 11... Film, 2, 12... Folded portion, 3, 13... Heat seal, 4, 14... Part, 5, 15... Fusion seal.

Claims (1)

[Claims for Utility Model Registration] (1) Folding back two parts of a film that has heat sealability on both sides at a predetermined interval,
The folded part is heat-sealed to form a folded part, and two sheets of the thus-formed film are superposed and melt-sealed into a trapezoid shape with the upper base between the two folded parts, and the lower base is formed into an opening. A packaging bag characterized in that the corner portions of the sandwich are located at both folded portions. (2) The packaging bag according to claim 1, wherein the folded portion has a width of 20 mm or less.