JPH0455929B2 - - Google Patents

Abstract

Method for producing bag made from flexible synthetic material. A rigid or semi-rigid handle 2 is applied on the sheath 17 of film when the said sheath is on the mandrel 16 of the forming machine. Application: packaging of liquids. <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bag containing a liquid made of flexible synthetic resin film.

This type of synthetic resin bag is made by wrapping a synthetic resin film around the vertical shaft of a molding machine, welding the seams to form a cylinder, cutting it to a predetermined size, and sealing the opening by welding. However, it is generally manufactured by filling only one opening left for liquid injection with liquid, and then sealing the injection opening. Such bags are of course soft, and in order to grasp them and pour out the liquid contents, they must have a shape that allows a person to hold them properly and be stable when held. be.

In this type of bag proposed to date,
In order to solve the above-mentioned shape and stability problems, a gripping member made of cardboard or synthetic resin is attached to the surface of the bag to provide rigidity for gripping and holding it in the hand.

However, simply attaching a gripping member such as cardboard to the surface of a synthetic resin film bag is insufficient in terms of rigidity when holding the bag in the hand as a bag containing liquid, so improvements can be made. was desired.

The synthetic resin film bag making according to the present invention has been made in view of the above-mentioned conventional problems. The eyes are welded to form a cylindrical body, a gripping member having a length approximately equal to the height of the synthetic resin film bag is affixed to a part of the side surface of the cylindrical body, and the lower end of the cylindrical body is After welding and sealing and injecting liquid from the top opening,
It is characterized in that the upper end opening is welded and sealed, and one corner near the sealed upper end opening on the gripping member side is folded over the gripping member.

Next, embodiments of the present invention will be described with reference to the drawings.

First, referring to Figure 1, the bag shown in this figure is
It consists of a package 1 made of synthetic resin film and a gripping handle 2 attached to the package. The package 1 is the inlet 1 after being filled with liquid and sealed by welding.
The upper corner 3 of a is bent over the upper end of the handle 2 and glued.

The handle 2 has a length approximately equal to the height dimension of the package cage 1 and has a rigidity, such as cardboard,
Made of plastic or the like, - a flat shape shown in Figure 2a 5, - a shape surrounded by an angle greater than 90° as shown in Figure 2b 6, - a shape surrounded at a right angle as shown in Figure 2c. 7, - a shape surrounded by a folded edge as shown in Fig. 2d 8, - a flat shape 10 with an outwardly bent end at right angles as shown in Fig. 2e, and - Fig. 2f It can be of flat shape 11 with outwardly sloping and folded ends as shown in Figure 11, and serves as a label for fixing the bag and its contents. Note that these shapes are merely shown as examples, and the present invention is not limited to these shapes.

FIG. 3 illustrates the manufacturing process of the package 1.

The synthetic resin film 12 that is continuously fed out from a reel (not shown) passes through a well-known mechanism (also not shown), so that both ends 13 and 14 of the film are overlapped and formed into a cylindrical shape around the shaft 16 of the molding machine. body 1
7, and the seam portion 15 is welded. In this state, the handles 2 are continuously supplied using the mandrel 16 as a support, and are attached at predetermined intervals as shown in FIGS. 5 and 6. The handle 2 is attached by pasting it with a suitable adhesive or by welding it by heating.

In the example shown in FIG. 5, the handle 2' is affixed onto a tube 17 which is supplied from a storage box 18 and is supported by an axle 16. Handle 2'
are provided from the storage box 18 in a pre-used shape, ie, cut and folded.

In the example shown in FIG. 6, the handle 2' is supplied as a long tape material 19, which is pasted to a predetermined length and then cut by an appropriate means.

The apparatus used to carry out the handle attachment process will now be described with reference to FIGS. 8A and 8B. This device mainly includes a rotating arm 101 and a supply storage box 102, the rotating arm 101 is for attaching the handle 2 onto a cylindrical body 104 formed around a vertical shaft 105, As will be described later, it is attached to the handle 2 without using adhesive or the like. A rotating arm 101 is mounted for rotation around an axis 106 and has a suction cup 107 for picking up the handle 2 from the storage box 102.
It has at the tip. This suction cup 107 is mounted so that it can move translationally along the longitudinal axis of the rotating arm 101. Therefore, when the rotating arm 101 is in line with the storage box 102,
The suction cup 107 is located in a retracted position 108 relative to the rotating arm 101. Handle 2
In order to pick up the suction cup 107, the suction cup 109
When the handle 2 moves forward to the position 108 and is pressed against the handle 2 protruding from the front of the storage box 102, and is sucked and pulled back to the position 108, the handle 2
Take it out.

The rotating arm 101 then rotates by a predetermined angle (90° to the left in the illustrated example) to present the handle 2 in front of the mandrel 105 .
The suction cup 107 is then extended to the aforementioned position 109, and the handle 2 is pressed against the surface of the tubular body 104 in the flat part 110 of the mandrel 105.

Furthermore, the handle 2 is fixed to the tubular body 104 by means of a welding device 111 which, like the suction cup 107, is held so as to be able to move translationally along the longitudinal axis of the rotary arm 101. Welding device 111
moves from the retracted position 112 to the welding position 113 to secure the handle 2 to the cylindrical body 104. Thereafter, the welding device 111 and the suction cup 107 are retracted, the suction is stopped, and the rotary arm 101
rotates to the front side of storage box 102 for a new action and repeats the above action. The new handles 2 are sequentially delivered forward into the removal position by the spring 118 in the storage box 102.

In the illustrated example, each handle 2 stored in the storage box 102 is combined with a sheet 114 made of synthetic resin. That is, the handle 2 is connected to the suction cup 107.
This synthetic resin sheet 114 is immediately before being picked up by the suction cup 107 and the handle 2.
sandwiched between. One or more holes are punched in the front of the sheet 114 using a punch 115 so as not to interfere with the suction of the handle 2 by the suction cup 107.

The sheet 14 is in the form of a film and is fed from a reel 103 using a step drive 116 to the cutting device 11 immediately upstream of the storage box 102.
cut by 7. Cut sheet 114
The area of the handle should be slightly larger than the area of the handle.
The handle 2 is welded onto the cylindrical body 104 from the edge to the outside. Also, this sheet 11
4 may be constructed of any material compatible with the material of the film 104 for welding equipment, but may be made of a less premium material than the bag since it will not come into contact with the liquids contained in the final product bag.

Of course, the device shown is controlled by an indexing motion, in which the tubular body 104 is moved onto the mandrel 10 while the handle 2 is picked up by the rotating arm 101.
5 and the seat 114 advances while the handle 2 is mounted on the tube 104. The cutting operation of the sheet 114 is performed using the handle 2.
is carried out in conjunction with the action of being picked up by the absorbent cup 107.

Note that although not shown, a known device can be used as a device for performing these operations.

Furthermore, in order to strengthen the rigidity of the package by the handle 2, the handle 2 is attached, and after filling the liquid from the upper inlet 1a and sealing the inlet 1a by welding, one upper corner 3 is attached to the upper corner 3. 7. Fold as shown in Figure 7.

Since the handle 2 has rigidity,
It is possible to use the upper corner 3 as a guiding element and a support element for the means of folding. That is, the device for bending the upper corner 3 includes holding members 20, 21 provided with grooves 22, 23 into which the side edges of the handle 2 are inserted.
and a movable plate 24 that bends the upper corner 3. With the handle 2 held by the holding members 20 and 21, the movable plate 24 is advanced vertically downward to bend the upper corner 3 and bend the upper corner 3. Press. An appropriate amount of adhesive is applied to the upper corner portion 3 in advance.
When the upper corner portion 3 and the handle 2 are bonded together, the rigidity of the package increases.

Since the synthetic resin film bag making according to the present invention is as described above, the rigidity is provided by the gripping member attached to the surface of the synthetic resin film, and the integration of both is achieved by folding the synthetic resin film onto the gripping member. This has the effect that the rigidity when held in the hand as a bag containing liquid is more sufficient than when the gripping member is simply attached.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the basic outline of a synthetic resin bag equipped with a handle as a gripping member;
Figures a, 2b, 2c, 2d, 2e and 2f are sectional views taken along the line A-A in Figure 1 showing various handles, and Figure 3 is a synthetic resin handle. FIG. 4 is a sectional view taken along the line B-B in FIG. 3. FIG. 5 is a partial perspective view showing the forming process for forming the film into a cylindrical body. FIG. FIG. 6 is a perspective view showing an example in which the handle is supplied from the reel, and FIG.
The figure is a perspective view of the upper corner of the bag folded over the handle, and Figure 8A is a sectional view showing the handle taken out of the device in which the handle is taken out of the storage box by a rotating arm and attached to the cylindrical body. and FIG. 8B is a plan view showing a state in which the handle is mounted on the cylindrical body by the rotating arm in the apparatus of FIG. 8A. 1: Package cage, 1a: Inlet, 2: Handle, 3: Upper corner, 15: Seam portion, 16: Mandrel, 17: Cylindrical body, 20, 21: Holding member, 2
4: Moving board.

Claims (1)

[Claims] 1 A flexible synthetic resin film bag containing a liquid, which is made into a cylinder by welding the seams of cylindrical synthetic resin film sheets, and a synthetic resin film bag is attached to a part of the side of the cylinder. Attach a gripping member having a rigidity approximately equal to the height dimension of the
After sealing the lower end of the cylindrical body by welding and injecting liquid from the upper end opening, the upper end opening is welded and sealed, and one corner near the sealed upper end opening on the gripping member side is placed on the gripping member. A synthetic resin film bag characterized by being folded over.