JPH0966944A - Packaging bag, and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a packaging bag manufactured in a bag shape usable without turning its inside out, and to improve efficiency in packaging work executed with an assisting device for packaging by a method wherein joining edges of a bag main body are formed of fusing seals, and printing is made in reverse printing at the surface or the reverse side of the bag main body. SOLUTION: A packaging bag 10 is made of transparent polypropylene in a shape formed of a front sheet 12 and a rear sheet 13 provided with a lip 13a projecting beyond the upper edge of the front sheet 12. The front sheet 12 and the rear sheet 13 are joined at their joining parts with fusing seals 14, and thereby a bag main body having an opening at its top is formed. Printing 16 indicating contents is made in reverse printing at the inside of the front sheet 12, and thereby the bag main body can be used regardless of its position where its inside being out, or its outside being in. On putting the packaging bag on a holding frame of an assisting device for packaging, the bag can be put without turning its inside out. In the case where the bag is positioned with its inside turned out, the printing comes to the surface side, being in normal position, and can be observed as normal characters on a packaged body from the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag used for packaging vegetables and fruits such as eggplant, cucumber and spinach, and flowers.

[0002]

2. Description of the Related Art Most of the vegetables and fruits sold in superstores are sold by packaging an appropriate number in a bag made of a synthetic resin film such as polyethylene and the like. It is carried out in the process of collecting fruits and fruits from producers and delivering them to superstores.

These packages are mainly carried out in facilities such as agricultural cooperatives in production areas, which are carried out by an automatic wrapping machine in a facility with a large amount of handling and by a hand in a facility with a small amount of handling.

When the packaging work is carried out manually, the efficiency of the packaging work remarkably differs depending on the kinds of vegetables and fruits. For example, when eggplants, bell peppers, apples, persimmons, etc. are put together in a bag, the surface of the eggplant, peppers, persimmons, etc. adheres to the inner surface of the film and is difficult to slip, so it is difficult to move to the bottom of the bag.
If they are put in a bag one by one, the adhesion to the film will be alleviated, but the work efficiency will be significantly reduced.

Particularly, in the case of eggplant, the surface of the eggplant is easily adhered to each other due to its overall shape and appropriate elasticity, and when the second and third pieces are put in a bag, the surface of the eggplant is adhered to the film. At the same time, the eggplants put in first tend to stick to the surface so that the eggplants to be put in later will not move both forward and backward.

As a countermeasure against this problem, the applicant of the present application has provided a packaging auxiliary tool including a packaging bag holding frame having an opening through which an object to be packaged can pass and a support base for supporting the opening of the holding frame in a substantially horizontal state. I applied earlier. FIG. 6 shows this auxiliary tool 51 for packaging.
FIG. 1 is a perspective view showing the packaging auxiliary tool 51, which is roughly divided into a ring-shaped holding frame 52, a support column 53, and a base 54.
It is composed of

The holding frame 52 is formed of plastic or stainless steel in a ring shape, and is supported by a support column 53 so that the holding frame 52 is in a substantially horizontal state.
The size of the holding frame 52 is such that several items to be packaged such as eggplants can pass through.

The pedestal 54 has a holding frame 5 among the four legs 54a to 54d so that the pedestal 54 can stably support the entire auxiliary tool even when a biased load is applied when the auxiliary tool 51 is used.
The legs 54a and 54b on the second side are longer than the legs 54c and 54d on the opposite side.

In order to wrap eggplant N using the packaging aid 51, the aid 51 is placed on a suitable workbench, and the bag H is first placed at the bottom as shown in FIG. 7 (a). The holding frame 52 is covered with the upper side. Next, several eggplants N are held in hand and simultaneously applied to the bottom of the bag H, and then the eggplant H is pushed into the holding frame 52 together with the bag H ((b) of FIG. 7). by this,
The bag H is pushed by the eggplant N and the bottom part is pushed below the holding frame 52. The bag H is wrapped around the eggplant N while being inverted, passes through the inside of the holding frame 52 together with the eggplant N, and falls onto the workbench ( FIG. 7C).

As described above, by using the packaging aid 51, the bag H with the bottom portion up is placed on the holding frame 52, and the eggplant N is pushed into the holding frame 52 from above the bag H,
It is possible to insert the eggplant N into the bag H while reversing the bag H. As a result, in the steps (a) to (c) of FIG. 7, the eggplant N and the bag H are moved simultaneously while being in contact with each other, and the eggplant N has a smooth surface and easily adheres to the bag H.
However, the bag H can be smoothly inserted and can be efficiently packaged.

[0011]

By the way, the packaging bag H used for such packaging is formed by closing three sides of the side surface and the bottom surface excluding the opening by hot sealing at a position of several mm from the outer edge. The contents, production areas, sellers, etc. are printed on the front side. Therefore, the packaging bag H is shown in FIG.
In order to obtain the state as shown in (a), it is necessary to turn over the packaging bag H and cover the holding frame 52, and this work greatly hinders the efficiency of the packaging work using the packaging aid 51. It is a factor.

[0012] Therefore, the problem to be solved by the present invention is to make it possible to use the formed packaging bag without turning it over, and to further improve the efficiency of the packaging work using the packaging aid.

[0013]

In order to solve the above problems, the present invention relates to a reversible packaging bag having at least a printing portion formed of a transparent synthetic resin sheet and having an opening for inserting a product in the upper portion thereof. The joining edge of the bag body is formed by a fusing seal, and the back side or front side of the bag body is reversely printed.

Here, the reverse printing, when viewed in a bag-making state,
It is a printing method that the printed design looks from the back side, when printing on the back side of the bag body in the bag manufacturing state,
May be done on the surface. Particularly when used for food packaging, it is desirable to print on the back surface side where there is no contact between the food and the printing ink during packaging. Further, unlike the surface bonding method by hot sealing, the fusing seal linearly connects the edges of the synthetic resin sheet simultaneously with the fusing, and the fusing seal made into a bag shape,
It can be used almost without back and forth.

Further, in order to facilitate the reversing operation of the bag in the packing operation using the packing aid, triangular cut portions by fusing seals can be formed on both sides of the bottom of the bag body.

Further, in the above-mentioned packaging bag, a transparent synthetic resin sheet having a reverse printed surface is folded so that the printed surface is the inner side to form a bottom portion, and both side surfaces thereof are fused and sealed. By closing with, it can be manufactured by the same process as the conventional one.

[0017]

[Function] By forming a bag body with a fusing seal and performing reverse printing on the bag-shaped body, when the bag for packaging is put on the holding frame of the packaging aid, the bag is not turned over and is kept as it is. Can be used over.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view of a packaging bag showing an embodiment of the present invention, and FIG. 2 is an AA of the packaging bag shown in FIG.
It is a line sectional view.

The packaging bag 10 of this embodiment is made of biaxially stretched transparent polypropylene, and is formed by a front sheet 12 and a rear sheet 13 having a lip 13a formed by projecting the upper portion of the front sheet 12 upward. . Reference numeral 11 denotes a bottom portion formed by folding a sheet-like material, and the front sheet 1
The joint portion between the rear sheet 2 and the rear sheet 13 is joined by a fusing seal 14 to form a bag body having an opening at the top. Unlike the surface bonding method by hot sealing, the fusing seal 14 linearly connects the edges of the synthetic resin sheet simultaneously with the fusing as shown in the partially enlarged view of FIG. 1, and distinguishes between the inside and the outside. There is almost no such thing, and a bag-shaped product made by this fusing seal can be used without front and back.

Reference numeral 15 indicated by an imaginary line is a cut portion which is cut in a triangular shape by the fusing seal 14 on both sides of the bottom portion 11 of the bag body. As a result, the corner of the bag, which has been difficult to invert in the past, is eliminated, and the bag 10 is easily inverted. Further, as clearly shown in FIG. 2, a printing portion 16 for displaying contents is formed inside the front sheet 12 by reverse printing. Therefore, when the bag 10 is turned over, the printed surface is turned over to be the front side, and in the packaged state, normal characters can be observed from the outside.

Next, a method of manufacturing the packaging bag 10 will be described with reference to FIG. As shown in FIG.
A rectangular synthetic resin sheet S having a printing portion 16 formed in advance on the upper surface side (which is the inner side during bag making) is folded as shown in FIG.
And the back sheet 13 is formed. Then, FIG. 3 (c)
As shown in FIG.
2 and the side surfaces of the rear sheet 13 and both sides of the bottom portion 11 are cut into a triangular shape, and the front sheet 12 and the rear sheet 13 are joined together. This completes the packaging bag 10 shown in FIG.

FIG. 4 is an explanatory view showing the packing operation of the eggplant N using the packing aid 53 described in the prior art. First, the bag 10 is held with the bottom part facing up as shown in FIG. 4 (a). Frame 5
Cover 2 At that time, the holding frame 52 is not turned over in the conventional manner but is put on the holding frame 52 as it is. Therefore, in this state, the printing surface is the back display. Next, several eggplants N are held in hand and are simultaneously applied to the bottom of the bag 10, and then the eggplant N is pushed into the holding frame 52 together with the bag 10 ((b) of FIG. 4). As a result, the bag 10 is pushed by the eggplant N and the bottom portion is pushed below the holding frame 52, and the bag 10
While inverting and enclosing the eggplant N, the eggplant N passes through the holding frame 52 together with the eggplant N and falls on the workbench in a packaged state ((c) of FIG. 4).

FIG. 5 is a perspective view showing this state. The packaging bag 10 is completely inverted from the state of FIG. 1, and the printing section 16 is in a normal display state. By forming the cut portion 15 in which both sides of the bottom portion 11 are cut in a triangular shape by the fusing seal 14, there is no corner portion that is difficult to reverse, and it is easy to easily reverse by simply dropping the packaged object into the holding frame 52. Become. Thereafter, as in the conventional case, the upper portion of the eggplant-containing bag 10 is bound with an adhesive tape or heat-sealed by a usual method to complete the packaging. Further, when the product is stored, the printing unit 16 comes to be positioned on the inner surface of the bag, so that the printing is less likely to come off due to contact with other objects such as those printed on the outside.

In the above embodiment, in order to prevent contact between the food and the printing ink during packaging, the printing section 16 is located inside the bag during bag making.
On the contrary, the printing surface may be placed outside the bag during bag making.

[0025]

According to the present invention, the following effects can be obtained.

(1) By forming a bag body by fusing and sealing a synthetic resin sheet and printing the back side on the bag-shaped body, it is possible to use the bag without any obverse and reverse sides. When it is put on the holding frame of the tool, it can be used as it is without being turned over, and the efficiency of the packing operation using the packing aid is further improved.

(2) By forming a cut portion in which both sides of the bottom portion are cut in a triangular shape by fusing seals,
There are no corners that are difficult to turn over, and it is easy to turn over simply by dropping the packaged object into the holding frame.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging bag showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of the packaging bag shown in FIG.

FIG. 3 is a diagram showing a manufacturing process of the packaging bag shown in FIG. 1.

FIG. 4 is an explanatory diagram showing a procedure of a packaging operation using the packaging bag and the packaging aid shown in FIG.

FIG. 5 is a perspective view showing a state in which an object to be packaged is stored in the packaging bag shown in FIG.

FIG. 6 is a perspective view of a packaging aid.

FIG. 7 is an explanatory view showing a procedure of a packaging work using a conventional packaging bag and a packaging aid.

[Explanation of symbols]

 10 Packaging Bag 11 Bottom 12 Front Sheet 13 Rear Sheet 13a Lip 14 Fusing Seal 15 Cut Part 16 Printing Part 51 Packaging Aid 52 Holding Frame 53 Strut 54 Pedestal 54a to 54d Leg H Packaging Bag N eggplant

Claims (3)

[Claims] 1. A reversible packaging bag in which at least a printed portion is formed of a transparent synthetic resin sheet and has an opening for product insertion in an upper portion thereof, wherein a joint edge of a bag body is formed by a fusing seal, and A packaging bag in which the back side or front side of the bag body is reverse-printed. 2. The packaging bag according to claim 1, wherein triangular cut portions formed by fusing seals are formed on both sides of the bottom of the bag body. 3. A transparent synthetic resin sheet having reverse printing on its surface is folded so that the printed surface faces inward to form a bottom portion, and both side surfaces thereof are closed by fusing seals. And a method for manufacturing a packaging bag.