JPH068029Y2 - Synthetic resin thin film bag for packaging - Google Patents

Description

[Detailed description of the device] "Industrial application field" The present invention relates to a plastic film bag (grossary back ... registered trademark) having an annular grip portion for packing and delivering purchased products in supermarkets, markets, convenience stores, etc. Is.

"Prior Art" Conventionally, the above-mentioned plastic film bag in which annular grips are formed on both sides of the opening is one in which the gripping part is gripped by hand or passed through an arm and the shopping product contained in the bag is lowered and carried. there were. However, since the film forming the bag has a thickness of about 0.03 mm, there is a problem that when the weight of the contained object increases, the above-mentioned gripping part becomes thin like a string or a thread and the gripping hand is hurt.

"Problems to be solved by the invention" The present invention grasps the above-mentioned annular gripping portions provided on both sides of the opening of an extremely thin plastic film bag having a thickness of about 0.03 mm, and holds the heavy object in the bag. An object of the present invention is to obtain a packaging bag in which a hand is not hurt by an appropriate air cushion without the risk of the portion extending like a thread.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention proposes that one end of a synthetic resin thin film cylinder having folding folds formed on both sides is welded and sealed, and the other end is opened to form the folding fold and the fold. The front and back sheets to be overlapped with each other are extended from the opening at the other end, the front and back sheets and the folding folds are welded and connected at the tip of the extension, and the central folding portion of the folds is longitudinally separated in the cylinder direction to form the opening. In a plastic film bag having annular grips formed on both sides of the section, an airtight chamber is formed between a fold extension piece inside the annular grip and a sheet extension piece outside thereof. It is composed of a synthetic resin thin film bag.

[Operation] Therefore, shopping items such as vegetables are put into the bag through the opening 5, and the annular grips 1 and 1 on both sides are handed to grip the bag at one time, and the bag is lowered and carried. In this way, the grips 1, 1
Since the air-sealed chambers 4 and 4 provided in the hand are gripped by hand, the gripping parts 1 and 1 do not become thin like a thread in the hand even if the weight of the contents in the bag increases, and the air is tightly gripped in the hand. To be done.

"Example" A thin film cylinder made of a thermoplastic synthetic resin is manufactured in a state of being expanded in a tubular shape from an inflation die, cooled, and flatly wound to form a coiled thin film cylinder. This winding thin-film cylinder has folding folds 2 ', 2'formed on both sides in an intermittent stop rewinding line by a molding plate to form a thin-film cylinder 6 as shown in FIG.
The air introduction guide is inserted between the folding folds 2 ', 2'and the front and back sheets 3', 3 ', and the front and back sheets 3', 3 '
Air is introduced from the through holes formed in the folds, and in this state, the folds 2 ', 2'and the sheets 3', 3'are welded along the welding line so that the air-sealing chamber 4 is closed by the folds 2 ', 2'. Between the sheet 3'and the sheet 3 ', 3'. In this state, the thin film cylinder 6 is cut at regular intervals and both sides of the cut end are heated and welded to form the welded sealed ends 7 and 7 '. This sealed end 7,
One 7'of the 7'contacts the airtight chamber 4 and the other 7'forms the bag bottom 8. After that, an intermediate portion of the folding folds 2 ', 2'at one sealing end 7 (the above-mentioned air introduction through hole is present in this portion) is cut and separated to form the opening 5.
The central folds 2 ″, 2 ″ of the folds 2 ′, 2 ′ are also longitudinally separated at the same time. Annular grips 1 and 1 are formed on both sides of the opening 5 as described above, and the air-sealing chamber 4 includes a fold extension piece 2 inside the grips 1 and 1 and a sheet extension piece 3 on the outside thereof. Will be formed in between. The air tight chamber 4
Has a plurality of horizontally long chambers as shown in FIGS. 1, 2 and 4, a vertically long chamber as shown in FIG. 5, a square chamber shown in FIG. 7 or a circle shown in FIG. For example, a room. In addition, the reference numeral 9 in the figure is a blocking tongue formed in the opening 5.

[Effect of the Invention] Since the present invention is configured as described above, the annular grips 1 and 1 provided on both sides of the opening 5 of the extremely thin plastic film bag with a film thickness of 0.03 mm are gripped by hand, and are heavy in the bag. Even if the baggage is accommodated, the grips 1 and 1 can be gripped in the air-sealed chamber 4 without the risk of being pulled thin in the hand, and there is no hand pain, and the bag can be comfortably gripped even if the bag is heavy.

[Brief description of drawings]

FIG. 1 is a perspective view showing a synthetic resin thin film bag for packaging of the present invention, FIG. 2 is a cutaway front view of the thin film bag, FIG. 3 is a plan view taken along the line AA in FIG. 2, and FIG. A side view taken along the line BB in FIG.
FIG. 5 is a front view of the air-sealing chamber of the annular grip portion, FIG. 6 is a plan view taken along line CC of FIG. 5, FIG. 7 is a front view of another embodiment of the sealing chamber, and FIG. 7 is a plan view taken along line D-D, FIG. 9 is a front view of a circular air-sealed chamber, and FIG. 10 is E of FIG.
It is a top view by the -E line. 1 ... Annular grip, 2 ... Folding extension piece, 3 ... Sheet extension piece, 4 ... Airtight chamber.

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin thin-film cylinder having folding folds formed on both sides, one end of which is sealed by welding and the other end of which is opened, and the folding fold and front and back sheets which are superposed on the fold are formed from the opening of the other end. Extend,
In a plastic film bag formed by welding the front and back sheets and the folding folds at the tip of the extension, and longitudinally separating the central fold of the fold in the cylinder direction to form annular grips on both sides of the opening. A synthetic resin thin film bag for packaging, wherein an airtight chamber is formed between a fold extension piece inside the annular grip portion and a sheet extension piece outside thereof.