JP2595242B2 - Corner folding packaging method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Technical Field> The present invention is a corner fold that enables high-speed wrapping by a horizontal pillow wrapping machine and a folding machine and realizes a wrapping form suitable for food such as Japanese confectionery. Related to packaging method.

<Prior art and its problems> Conventional packaging apparatuses and methods for packaging foods such as Japanese confectionery include Japanese Utility Model Laid-Open Nos. 50-65860, 51-132368, 55-117968, and 55-117968. No. 55-127004, No. 60-68
No. 213, No. 57-14166, No. 57-37682, No. 57-37684, No. 58-4001, but No. 57
-37682 is a package form of Fengxian folding, otherwise,
This is a corner-folded packaging form.

Until now, there has been no example of corner folding performed by a horizontal pillow packaging machine. There are examples of Fonsho folding performed using a horizontal pillow wrapping machine (Japanese Patent Application No. 61-1131, Japanese Patent Application No. 61-131).
No. 11312). The reason that the corner folding has not been performed by the horizontal pillow packaging machine is that the packaging form is far from the packaging form that can be performed by the horizontal pillow packaging machine.

That is, the packaging form by the horizontal pillow packaging machine was not preferred for individual packaging such as Japanese confectionery.

However, the needs of the market are demanded so that the corner fold can be packed by the horizontal pillow wrapping machine.

The reason is that the horizontal pillow wrapping machine has extremely large packing capacity (the number that can be wrapped per unit time) compared to the square fold wrapping machine. In a corner folding packaging machine, complete sealing is not performed.

On the other hand, hot melt applicators are expensive, and therefore, there is a need to eliminate the use of hot melt in realizing a novel corner folded package.

<Object of the Invention> A main object of the present invention is to realize a packaging form called square folding packaging suitable for food such as Japanese confectionery and the like, and a novel corner folding packaging method capable of performing a novel square folding packaging that can be completely sealed. Is to provide.

It is a secondary object of the present invention to provide a horizontal pillow packaging machine and a novel corner folding packaging method capable of high-speed packaging using a folding machine.

A secondary object of the present invention is to provide a novel corner-folding packaging method capable of making a novel corner-folding packaging that does not require any hot melt and can greatly reduce the apparatus cost.

<Structure of the Invention> According to the corner folding packaging method of the present invention, as a first step, a packaging material having an inner surface made of a heat-fusible plastic film and an outer surface made of a non-heat-fusible plastic film is bent into a cylindrical shape. At the same time, the inner surfaces of both ends in the width direction are abutted against each other to provide a center seal by welding, and in the process, the product is stored in the middle, and then the required length is extended to both sides of the product so that it can stand at the center of the upper surface of the product The ear part is sealed with the end of the product.

In the second step, the end seal is cut off from the end seal part on the side where the center seal of the ear part is located.

In the above first or second step, both corners of the ear portion are cut off so that the end of the ear portion remains in a chevron shape.

In a third step, the ears on both sides are raised with the cut side inside.

As a fourth step, the ear portions on both sides are bent along the upper surface of the product, and the ears are abutted at the center of the product to be raised and the root of the rising is welded.

As a fifth step, a pair of ear portions that stand up against each other at the center of the product are twisted.

 It is characterized by comprising the above steps.

<Examples> FIGS. 1 (a) to 1 (j) are packaging process diagrams showing the corner folding packaging method of the present invention by form.

1 (a) to 1 (c) are a plan view, a front view, and a cross-sectional view of a place where a product is stored, showing a form of a first step processed by a horizontal reverse pillow packaging machine.

In the form of the first step, the packaging material F whose inner surface is made of a heat-fusible plastic film and whose outer surface is made of a non-heat-fusible plastic film is bent into a tubular shape and the inner surfaces at both ends in the width direction are welded to each other. By applying the center seal 1,
And a tubular ear portion 2 which accommodates the product S in the middle of the process and then extends on both sides of the product S, and which has a required length so as to be able to stand at the center of the upper surface of the product S. Two,
A gusset 3 is put in the product S and an end seal 4 is provided. The packaging material F used in the horizontal pillow packaging machine is continuous paper, and straight cuts at both ends are performed last. In addition, you may process by a horizontal positive pillow packaging machine and may be repeated so that the center seal 1 may be lower side.

1 (d) to 1 (g) show the form of the second step. In this step, as shown in the front view of FIG. 1 (d) and the cross-sectional view of the ear part in FIG. 1 (e), the first cut which cuts off the upper half of the center part 1 of the ear part 2 on both sides is cut off. Then, as shown in the plan view of FIG. 1 (f) and the front view of FIG. 1 (g), it consists of a second cut which leaves the upper half of the ear part 2 on both sides in a triangle.

As shown in FIG. 1 (b), the end of the ear portion 2 is opened by the strength of the waist of the packaging material even if it is cut by the horizontal pillow packaging machine.
The first cut in FIGS. 1D and 1E can be performed by inserting a die plate from the end of the ear portion 2 and lowering the punch from above. The first cut can be performed by inserting a cutter into the ear portion 2 from both sides in the width direction of the product and cutting it off, or by inserting a cutter from the end direction of the ear portion 2 and cutting it off.

As can be seen from FIG. 1 (e), a slight uncut portion is left at both ends of the ear portion 2 in the width direction.

FIGS. 1 (f) and 1 (g) and the second cut are V cuts in which the lower half of the ear portion 2 left after the first cut is left in a triangle. Note that the second cut may be a cut left in a chevron as shown in FIG.

In the second step, the order of the first cut and the second cut may be performed in the reverse order. The point is that the ear portion 2 is left closer to the end than the end seal portion and the side without the center seal remains in a mountain shape. To be resected.

FIG. 1H is a front view showing the form of the third step. In this step, the cut sides of the ear parts 2 on both sides are turned inside, and the ear parts 2 are bent so as to stand up in close contact with the product side faces, and the cut sides of the ear parts 2 are turned inward. The ear portion 2 rises sufficiently longer than the product S.

FIG. 1 (i) is a front view showing a fourth step and form. In this step, the ear portions 2, 2 on both sides rising higher than the product are further horizontally bent so as to be in close contact with the upper surface of the product S, the center seal is hidden, and the center is abutted at the center, and the root of the rising is formed. Are welded by pressing with a pair of heaters (not shown).

FIG. 1 (j) is a perspective view showing the form of the fifth step. This step twists a pair of ear portions 2, 2 which stand up against each other at the center of the product, thereby completing the packaging. The pair of ear portions 2, 2 before being twisted are raised in a triangular shape and the paper width at the base of the rising is small, so that the twisting of the paper can be properly performed, and the twist is applied. This enhances the dignity and interest in packaging.

In particular, FIG. 3 illustrates a very useful folding machine that performs the third to fifth steps. This folding machine has a pair of ear rising plates P, P for raising the ear portions 2, 2 on both sides.
After the ear portions 2 and 2 stand on both sides, a pair of heaters H and H which enter the product S from the outside to the center of the upper surface of the product S and abut on each other, and hang down on the table T. And an ear-twisting device G provided. The ear twisting device G includes a frame shaft 7 that pivots about a longitudinal axis, and an openable and closable link 9 that is attached to the frame shaft 7 and that closes the free rolls 8 at the lower ends so as to abut each other by a linear actuator (not shown).
And a stopper plate 10 for raising the ear portions 2, 2 at the center of the upper surface of the product S. The free rolls 8, 8 have a minimum gap between the free rolls 8, 8 and the outer product S so as not to hit the product S when closed.
Is inserted, the ear portions 2 and 2 are bent in the middle and pass under the free roll 8 so as to abut against the stopper plate 10 and rise up.

First of all, the ear portion 2 is formed by a pair of ear rising plates P, P.
2 and then the pair of heaters H, H are used to fold the ear portions 2 and 2 along the product upper surface, and the stop plate 10 acts to form a triangular ear portion 2 at the center of the upper surface of the product S. 2 is pressed and welded, and then the ear twist device G is activated to form a triangular ear portion 2,
Two twists are performed. The operation of the ear twist device G is as follows.
After the frame 8 is clamped, the frame shaft 7 rotates several times, and the free rolls 8 and 8 only open.

<Second embodiment> Figs. 4 (a) and 4 (b) are plan views showing a form of a first step processed by a horizontal reverse pillow packaging machine. As can be seen, the cuts on both sides are made in a V-shape, leaving the end of the ear part 2 in a triangle. Such V-shaped cutting can be performed by a horizontal inverted pillow packaging machine.

FIG. 4 (c) shows the form of the second step, in which the upper part 2a where the center seal 1 closer to the end than the end seal part 4 of the ear part 2 is cut off. Thus, the side 2b without the center seal remains in a triangle.

<Other Modifications> The first step may be packaged without using a horizontal pillow packaging machine. That is, a product is placed in the center of a sheet-shaped packaging material having a predetermined shape, and a pair of side edges is raised so as to be in close contact with the side surface of the product, and the inner surfaces of the packaging material are brought into close contact with the upper surface of the product and abut each other. Then, they may be sandwiched by a pair of heaters to perform center sealing by welding, and then a gusset may be inserted in the end of the product to perform end sealing.

<Effect of the Invention> As described above, according to the corner folding packaging method of the present invention, the first step can be performed by a horizontal pillow packaging machine, and the second to fifth steps are performed as one machine. It can be performed by a folding machine that is put together.

Such a folding machine, the product completely sealed and packed by the horizontal pillow wrapping machine, there is no fear of displacement, one side of the ears on both sides are cut off, and the cut off sides are faced and folded, and Since it is only necessary to perform the necessary heat sealing and twist, the mechanical structure is relatively simple and the packaging capacity is significantly higher.One horizontal pillow packaging machine and one folding machine are installed on a line. Once connected,
High-speed packaging is possible, and a packaging form called square folding, which is particularly suitable for food such as Japanese confectionery, can be realized.

According to the method of the present invention, the product is completely sealed in the first step, which is superior to the conventional square folding packaging machine which is not completely sealed packaging, and the center seal is hidden. So the packaging can be beautiful, and furthermore, by the cut that leaves the end of the ear part in the first or second step in a chevron, the two chevron ears that are twisted upright at the center of the product are unfolded and opened, It becomes a decoration and the packaging can be beautiful.

Further, according to the present invention, since no hot melt is required, the mechanical device can be greatly reduced as compared with the case where a hot melt applicator is used.

[Brief description of the drawings]

1 (a) to 1 (j) are packaging process diagrams showing the packaging method of the present invention by form. 1 (a) to 1 (c)
It is the top view which shows the form of the 1st process which is processed with the horizontal pillow packing machine, the front view and the cross section of the place where the product is accommodated.
FIGS. 1 (d) to 1 (g) show a second step, and FIGS. 1 (d) and 1 (e) are a front view and a cross-sectional view of an ear portion after the first cut. (G) are a plan view and a front view after the second cut. FIG. 1H is a front view showing the form of the third step. FIG. 1 (i) is a front view showing the form of the fourth step. FIG. 1 (i) is a perspective view showing a packaging completed form of the fifth step. FIG. 2 is a partial plan view showing another example of the second cut in the second step. FIG. 3 is a front view illustrating a folding machine that performs the third to fifth steps. FIGS. 4 (a) to 4 (c) relate to the second embodiment, and FIGS. 4 (a) and 4 (b) are a plan view and a front view showing a first step, and FIG. It is a front view which shows two processes. F ... packaging material, S ... product, 1 ... center seal, 2 ... ear, 2a ... side with center seal, 2b ... side without center seal, 3 ... gusset, 4 ... end Seal: P: Ear upright plate, G: Ear twist device, 7: Frame shaft, 8: Free roll, 9: Openable / closable link, 10: Stopper plate, H: Heater, T: table,

Claims (1)

(57) [Claims] In a first step, a packaging material whose inner surface is made of a heat-fusible plastic film and whose outer surface is made of a non-heat-fusible plastic film is bent into a cylindrical shape and the inner surfaces at both ends in the width direction are abutted. Apply a center seal by welding,
And in the process, the product is accommodated in the middle and then the ear portions, which extend the required length on both sides of the product so that they can stand in the middle of the upper surface of the product, are end-sealed at the product. In the second step, the end seal is cut off from the end seal part on the side where the center seal of the ear part is located. In a third step, the ears on both sides are raised with the cut side inside. As a fourth step, the ear portions on both sides are bent along the upper surface of the product, and the ears are abutted at the center of the product to be raised and the root of the rising is welded. As a fifth step, a pair of ear portions that stand up against each other at the center of the product are twisted. A corner folding packaging method comprising the above steps.