JPH0577501B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a bag with a hand string that is divided into two parts, the front and the back.

[Conventional technology]

Conventionally, various methods are known for manufacturing bags that are made by stacking films and welding and cutting the stacked bags in a continuous manner. There was no method for manufacturing bags that could be obtained continuously by stacking the stacks and welding and cutting the stacks.

[Problem to be solved by the invention]

An object of the present invention is to provide a method for manufacturing a bag with a hand string, which is divided into two halves, the front and the back, by continuously welding and cutting a stack of films.

[Means to solve the problem]

In order to achieve the above object, the method for manufacturing the bag of the present invention is as follows: A narrow band-shaped reinforcing plate 2 made of a thermoplastic soft synthetic resin film is attached to the back side of one side edge of a wide band-shaped front side plate 1 made of a thermoplastic soft synthetic resin film. U-shaped notches 3 are formed on the outer edges of these front side plates 1 and reinforcing plates 2 at the same intervals as the width of the finished product A, and U-shaped notches 3 are formed between the notches 3 on these front side plates 1 and reinforcing plates 2. Holes 4 and 4' for passing hand strings are cut on both sides, and the front side plate 1 and reinforcing plate 2 are connected to the outer edge 5, the incisal edge 6 of the U-shaped notch 3, and the inner edge of the reinforcing plate 2. Location 7
and a step of obtaining a pair of front side members 11, 11' having a hand string attachment piece 10 on one side edge by welding each other at the incisal edge portions 8 of the hand string passing holes 4, 4'; The pair of front side members 11, 11' obtained in step 1 is placed on a twice-wide strip-shaped back side member 12 made of a thermoplastic soft synthetic resin film with the U-shaped notches 3, 3 facing in opposite directions and partially overlapping each other. Strap attachment piece 10,1
0 overlaps with the other parts not overlapping, and completion of passing the front side members 11, 11' and the back side member 12, which are overlaid in this way, through the center line of the U-shaped notches 3, 3. They are welded to each other at locations 13 on the left and right side edge formation lines of product A and locations 14 on the bottom edge formation line of finished product A, and a separation line 15 is cut in the center of the welded locations 13 and 14. A process of tearing off and removing the surplus portion 16 to obtain the bag body 17; and folding the bag body 17 in two with the front side members 11 and 11' facing outward and in an upright state with the hand strap attachment pieces 10 and 10 facing each other. together with each hand strap attachment piece 1
Insert the hand string 1 into the hand string passing holes 4 and 4' at 0 and 10.
8 and attaching the hand strap 18 to the pieces 10, 10.

[Effect]

A mechanism for superimposing the reinforcing plate 2 on the front side plate 1, a mechanism for cutting the U-shaped notch 3 and holes 4, 4' for hand string passage, a mechanism for welding the reinforcing plate 2 on the front side plate 1, a front side member 11, 11' on the back side member 12, a mechanism for welding and attaching separation lines 15 to the left and right side line forming line locations 13 and bottom edge forming line locations 14, etc., are constructed using a bag making machine (not shown). .

〔Effect of the invention〕

Since the present invention has the above-mentioned structure, the purpose of the present invention is to produce a bag with a hand string that is divided into two parts, the front and the back, by continuously producing a bag by stacking the film and welding and cutting the stack. It has the effect of completely achieving the purpose of.

〔Example〕

The embodiments of the present invention will be described with reference to the drawings.
First, a narrow band-shaped reinforcing plate 2 made of a colored opaque thermoplastic soft synthetic resin film is superposed on the back side of one side edge of a wide band-shaped front side plate 1 made of a colorless and transparent thermoplastic soft synthetic resin film. U-shaped notches 3 are made on the outer edges of the front side plate 1 and reinforcing plate 2 at the same intervals as the width of the finished product A, and hand strings are passed through both sides of the front side plate 1 and reinforcing plate 2 between the notches 3. In addition to cutting holes 4 and 4' respectively, these front side plates 1,
The reinforcing plate 2 is welded to each other at the outer edge 5, the incisal edge 6 of the U-shaped notch 3, the inner edge 7 of the reinforcing plate 2, and the incisal edge 8 of the hand string passage holes 4, 4'. Thus, a pair of front side members 11, 11' having a hand strap attachment piece 10 on one side edge are constructed.

Thereafter, these front side members 11, 11' are placed on a double-wide strip-shaped back side member 12 made of a colored opaque thermoplastic soft synthetic resin film with U-shaped notches 3, 3.
are facing in opposite directions and partially overlap, and hand string handle piece 1
0 and 10 are overlapped and the other parts are not overlapped, and the front side members 11 and 11' and the back side member 12 that have been placed overlapping in this way are cut into the U-shaped notch 3,
A location 13 on the left and right side edge formation line of the finished product A passing through the center line of 3 and a location 14 on the bottom edge formation line of the finished product A
Welded to each other at the welding point 1
A tearing line 15 is cut in the center of the bags 3 and 14, and the bag body 17 is obtained by tearing the bags along the cutting line 15 and removing the excess portion 16.

Next, the bag body 17 is folded in half with the front side members 11 and 11' facing outward, and the hand strap attachment pieces 10 and
10 are in an upright state facing each other, and the holes 4, 4' for passing the hand strings in each of the hand string attachment pieces 10, 10 are
Insert the hand string 18 into the same pieces 10, 10.
The finished product is obtained by attaching the parts and adding them together.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the reinforcing plate overlapped with the front side plate, Fig. 2 is a perspective view showing the front side member, Fig. 3 is a perspective view showing the state where the front side member is overlapped with the back side member, Fig. 4 Figure 5 is a perspective view showing the bag body with welding and separation lines applied to the left and right edge forming lines and the bottom edge forming line, Figure 6 is a perspective view showing the bag body folded in half. FIG. 7 is a perspective view showing the finished product, and FIG. 8 is a sectional view taken along line A-A in FIG. ,
4, 4'... Hole for passing the hand string through, 6... Incisal point, 7
...Inner edge point, 8...Incisal edge point, 10...Handle attachment piece, 11, 11'...Front side member, 12...Back side member, 13...Point on both left and right side edge formation lines, 14
...Position on the bottom edge formation line, 15...Separation line, 16
... Surplus part, 17 ... Bag body, 18 ... Hand string, I ... Finished product.

Claims (1)

[Claims] 1. A narrow band-shaped reinforcing plate 2 made of a thermoplastic soft synthetic resin film is superposed on the back side of one side edge of a wide band-shaped front side plate 1 made of a thermoplastic soft synthetic resin film,
U-shaped notches 3 are made on the outer edges of these front side plates 1 and reinforcing plates 2 at the same intervals as the width of the finished product A, and on both sides of the front side plates 1 and reinforcing plates 2 between the notches 3 Holes 4 and 4' for threading the string are cut respectively, and these front side plates 1 and reinforcing plates 2 are attached to outer edge portions 5 and U.
By welding each other at the incisal edge 6 of the letter-shaped notch 3, the inner edge 7 of the reinforcing plate 2, and the incisal edge 8 of the handlace holes 4, 4', a hand strap attachment piece is formed on one side edge. 10, and placing the pair of front members 11, 11' obtained in the above step on a double-wide strip-shaped back member 12 made of a thermoplastic soft synthetic resin film. A state in which the U-shaped notches 3, 3 are oriented in opposite directions and partially overlap, and the hand strap attachment pieces 10, 1
0 overlaps with the other parts not overlapping, and completion of passing the front side members 11, 11' and back side member 12, which are overlaid in this way, through the center line of the U-shaped notches 3, 3. They are welded to each other at locations 13 on the left and right side edge formation lines of product A and locations 14 on the bottom edge formation line of finished product A, and a separation line 15 is cut in the center of the welded locations 13 and 14. A process of tearing off and removing the surplus portion 16 to obtain the bag body 17; and folding the bag body 17 in half with the front side members 11 and 11' on the outside and in an upright state with the hand strap attachment pieces 10 and 10 facing each other. together with each hand strap attachment piece 1
Insert the hand string 1 into the hand string passing holes 4 and 4' at 0 and 10.
8 and attaching a hand strap 18 to the same pieces 10, 10;