JP2000072115A - Method of manufacture of package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity, reduce warp and twisting or the like and further positively melt and fix a sheet. SOLUTION: A plurality of storing sections 7 are formed at a base plastic material sheet 1A in a predetermined space. After stored items 9 such as goods or the like are stored in the storing sections 7, a base material sheet 2A is overlapped on the base sheet 1A. A laser beam 20a is radiated between the storing sections 7 and outside the storing sections 7 while the overlapped sheets 1A and 2A and a laser device 20 for radiating a laser beam 20a are relatively moved in each of the thread directions of the storing sections 7, thereby the base material sheet 1A and the base material sheet 2A are melted and fixed to each other and cut to manufacture the packing member A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a package, and more particularly, to a method for manufacturing a package for packaging commodities such as daily necessities, batteries, stationery, and the like.

[0002]

2. Description of the Related Art Conventionally, various packages of this type have been proposed. For example, as shown in FIG.
A mounting sheet 53 coated with a heat-fusible resin on its surface is placed on a plastic sheet 51 on which the storage section 50 is formed by vacuum forming or the like, and the mounting sheet 53 and the periphery of the sheet 51 (the storage section 50). A package (a so-called blister pack) in which the sheet 51 and the backing sheet 53 are adhered by heat sealing the outer peripheral portion of the package (known as Blister Pack 1) is known (conventional example 1).

[0003] Further, there is also known a plastic sheet provided with a top sheet made of plastic having a storage portion formed therein and a back sheet made of plastic closing the storage portion of the sheet. The package is a high-frequency, ultrasonic, peripheral edges of both sheets.
It is welded by heating with a heater or the like (conventional example 2).

[0004]

However, the means for manufacturing the package of the above-mentioned prior art example 1 firstly includes individual sheets 51
In addition, since the backing sheet 53 is punched into a predetermined shape and then adhered to each other, the work efficiency is poor and there is a problem in productivity.

[0005] The manufacturing method of the package of the prior art 2 uses a high frequency, an ultrasonic wave, a heater, or the like to weld the entire periphery (about 3 to 10 mm) of the sheet accommodating portion. This is particularly noticeable when a relatively thin sheet is used.

Further, in the packaging bodies of the prior art examples 1 and 2, when the backing sheet 53 or the back sheet is placed on the sheet (front sheet) 51 having the storage portion 50 in a shifted state, the backing sheet is thereafter placed. 53 and a sheet 51 having a back sheet and a storage section 50
There was also a problem that welding of the peripheral portion with the (front sheet) was not performed accurately.

Therefore, the present invention has been made to solve such a problem, and aims at improving the productivity,
It is an object of the present invention to provide a method of manufacturing a package in which twisting and the like are reduced and a sheet can be securely welded.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a method of manufacturing a package according to the present invention is directed to a method of manufacturing a package according to the present invention.
Are formed at a plurality of intervals and at predetermined intervals, and after storing an article 9 such as a product in the storage section 7, the base sheet 2A is superimposed on the base sheet 1A, and the superposed base material is formed. By irradiating the sheets 1A, 2A and the laser device 20 for irradiating the laser light 20a relative to each of the directions of the storage section 7 with the laser light 20a between the storage sections 7 and outside the storage section 7, In this case, the package A is manufactured by welding and cutting the base sheet 1A and the base sheet 2A.

[0009] Such a manufacturing method is based on the base sheets 1A and 2A in which the objects 9 are stored by a plurality of laser beams.
Since the pieces are welded and cut into a plurality of strips, a plurality of packages can be continuously and simultaneously produced.

Further, a plurality of storage portions 7 are formed on one side of a plastic base material sheet 30, and the base material sheets 30 are arranged in such a manner that the storage portions 7 in which the objects 9 are stored are arranged side by side.
By folding the other side of the laser beam and irradiating the laser light between the storage sections 7 and outside of the storage section 7 while relatively moving the laser apparatus 20 for irradiating the laser light 20a with the base sheet 30 that has been superimposed, It is to manufacture the package A by welding and cutting the superposed base sheets 30 together.

According to the manufacturing and packaging method, the base sheet 3
The welding and cutting of zeros can be performed at the same time, and a plurality of packages can be produced at the same time.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION <First Embodiment> Hereinafter, a first embodiment of a package of the present invention will be described. In this embodiment, as shown in FIG. 4, the package A includes a front side sheet 1 and a back side sheet 2 which are front sides when a product is displayed and sold. They are provided in the same shape.

Here, each of the sheets 1 and 2 is formed in a single layer or a plurality of layers from a heat-moldable material made of a synthetic resin such as polyester such as polyethylene terephthalate, polypropylene, polyvinyl chloride, polystyrene and polycarbonate. . The thickness of each of the sheets 1 and 2 is determined by the size of the product to be packaged and the like, but it is usually preferable to adopt a thickness of about 0.1 to 1.0 mm.

On one side (or both sides) of the sheet 2 on the back side, a printed surface (not shown) on which printing and printing are performed is provided.

The sheet 1 on the front side is made of a transparent sheet, and a housing portion 7 protruding to the front side is integrally formed by heat molding.

In the storage section 7, a product 9 as a storage object is stored. Then, both edges 1a and 2a (upper and lower edges) of the sheets 1 and 2 on the front side and the back side are bonded by laser light.

In the vicinity of the upper edges of the sheets 1 and 2 on the front side and the back side, a hole 8 for suspension penetrating both sheets 1 and 2 is formed.

Next, a method of wrapping the product 9 with the sheets 1 and 2 will be described. First, as shown in FIG. 1, the base sheet 1A forming the front sheet 1 is continuously transferred. The base sheet 1A has a sufficient width to take a plurality of sheets (two sheets in the present embodiment) in the lateral direction (width direction) of the front side sheet 1 and has a plurality of sheets 1 in the transport direction (arrow direction). It is a long object of a predetermined length that can be taken.

In the base sheet 1A, the storage portions 7 are formed in two rows and at a predetermined interval in the transfer direction of the base sheet 1A. Further, the product 9 is placed in the storage section 7 of the base sheet 1A.

On the other hand, the base sheet 2A forming the sheet 2 on the back side is also set to have the same width as the base sheet 1A on the front side. Then, the base sheet 2A is transferred from above the base sheet 1A on the front side at the same speed and in the same direction, and is brought close to each other to overlap the two sheets 1A and 2A.
The respective side edges 1A 'and 2A' are brought into contact with each other.

Further, the punching device 10 is moved up and down to form cuts 12 as separating means in the width direction of the front and back sheets 1 and 2 at predetermined intervals. In the present embodiment, the cuts 12 are formed in two rows. The length L1 of the cut 12 is set to be equal to or larger than the width L2 of the sheets 1 and 2.

Preferably, both end portions of the two base sheets 1A, 2A, which are simultaneously transferred, are pressed and held by holding members 25 (for example, pressing rollers), and come into contact with each other. Laser light 20a by a plurality of laser light irradiation devices 20 arranged on the side edges 1A 'and 2A'
Is irradiated.

The laser beam irradiating device 20 has two storage sections 7
And two of them are arranged outside of each storage unit 7. The welding of the side edges 1A 'and 2A' is performed continuously in the transport direction of the base sheets 1A and 2A. As the laser light, an appropriate one such as a carbon dioxide gas laser, a YAG laser, and a glass laser can be used.
A carbon dioxide laser of about 200 W is preferable.

The base material sheets 1A, 2A to be transferred are sequentially cut to a predetermined width by the laser light, and both edges 1a, 2a of the cut sheets 1, 2 are moved in the longitudinal direction of the sheets 1, 2. (The direction of transport of the base sheets 1A and 2A) is continuously welded. 27a is a scrap generated by cutting the outside of the storage section 7. Reference numeral 27b denotes a scrap generated by cutting between the storage portions 7.

Thus, even when the edges do not coincide when the base sheets 1A and 2A are overlapped, both edges 1a and 2a of the front and back sheets 1 and 2 can be used.
These can be welded so as to exactly match each other.

The laser beam 20a is applied to the base sheets 1A, 2A
In addition to irradiating from one direction, it is also possible to irradiate from both base material sheets 1A and 2A as shown in FIGS. 3 (a) and 3 (b). In such a case, for example, the base sheet 1
A and 2A are focused on the mutually superposed surfaces of the base sheets 1A and 2A, and the base sheets 1A and 2A are slanted from both sides.
Each of the laser beams 20a can be irradiated in the traveling direction of 2A. In addition, in FIG.2 (b) and FIG.3 (b), 12 shows a welding part.

The package in which the product is wrapped by the above-described method is hung at a store or the like using the upper end hole 8 and is displayed and sold. The product 9 can be recognized from the front side. Although the upper and lower edges of both sheets 1a and 2a are not adhered to each other, since both edges 1a and 2a are continuously and reliably welded, the product 9 is stored in the storage portion 7 without falling off. .

Further, since the sheets 1 and 2 are welded at the narrow portions of both edges 1a and 2a and the sheets 1 and 2 are adhered to each other, for example, the sheets 1 and 2 are opened from the upper and lower edges that are not adhered, and the welding is performed. The two sheets 1 and 2 of the portion 12 can be separated and opened, and the product 9 can be easily taken out.

As described above, since the welding of both edges 1a and 2a is performed by irradiating a laser beam unlike a conventional high frequency or the like, partial welding is performed with a narrow width (for example, a width of 0.5 to 2 m).
m) can be performed easily and reliably, and the appearance is beautiful. Further, the sheets 1 and 2 on the front side and the back side are bonded at the end portions 1a and 2a, and the entire peripheral surface does not need to be bonded. Difficult to do.

In the above embodiment, one sheet 1 is transparent, and the other sheet 2 is opaque and has a printed surface on which printing or the like is performed. Transparent and both sheets 1,
2 is within the intended scope of the present invention even if it is printed. Further, in the above embodiment, the storage section 7 is provided only on the front sheet 1, but it is also possible to provide the storage section on the back sheet 2.

Further, in the present invention, the entire end faces of both edges 1a and 2a of the sheets 1 and 2 can be melted by a laser beam so as to be rounded. Also,
In addition to the cuts 12, a perforation may be cut in the width direction of the base sheet to divide the package A from the base sheet.

<Second Embodiment> The method of manufacturing a package according to the present invention is as follows. For example, as shown in FIG. 5, one base sheet 30 is folded, edges are overlapped with each other, And then cut to produce a package.

That is, the rectangular base sheet 30 is formed with a plurality of storage recesses 7 on both sides with respect to the center bending line 31. The product 9 is placed in the storage recess 7 on one sheet piece 30a side of the base sheet 30 (see FIG. 5A and FIG. 6A). In addition, a hook hole 8a is formed corresponding to each storage recess 7.

Further, the base sheet 30 is folded at the position of the folding line 31 so that the storage recesses 7 and the retaining holes 8a of the two sheet pieces 30a and 30b are aligned.

Laser light is irradiated by the three laser light irradiation devices 20 arranged at a predetermined interval. At this time, since the base sheet 30 and the laser light irradiation device 20 move relatively (see FIG. 5B), the laser light irradiation device 20
Welds and cuts both edges 30c of the base sheet 30 and the center L to produce a plurality (two) of the packaging bodies A (see FIGS. 5C and 6B).

The present invention is not limited to the above-described first and second embodiments, and the number of the storage sections 7 may be three or more than two. The relative movement between the base sheet and the laser beam irradiation device may mean that only the laser beam irradiation device is moved, or that both the base sheet and the laser beam irradiation device are moved. is there.

[0037]

As described above, according to the method for manufacturing a package according to the present invention, the base sheet storing the objects to be stored is welded to a plurality of strips by a plurality of laser beams and cut off. There is no need to form a sheet according to the shape of the body, and the welding and cutting of the sheet can be performed in the same step, and the work of cutting and welding the sheet at a predetermined position can be speeded up. The package can be produced at the same time, and productivity can be improved.

Further, since the edges of the sheet are welded to the other sheet by laser light and the sheets are adhered to each other, the sheets can be reliably welded, and the appearance becomes beautiful.

Further, since the sheet can be adhered only to the narrow portion of the edge, there is an effect that warping, twisting, etc. hardly occur even when the sheet is thin.

When separating means for separating the package from the base sheet is formed between the storage portions in the relative movement direction of the superposed base sheets, each package can be easily separated. There are advantages that can be done.

[Brief description of the drawings]

FIGS. 1A and 1B show a manufacturing state of a package according to a first embodiment of the present invention, wherein FIG. 1A is a partially cutaway plan view, and FIG.

FIG. 2A is a cross-sectional front view showing a main part of the embodiment welded by a laser beam and showing a main part before cutting, and FIG. 2B is a cross-sectional front view showing a main part welded by the laser beam and after the cutting. .

FIG. 3 shows a method of bonding the sheet, (a) is a schematic diagram,
(B) is sectional drawing.

FIG. 4 is a perspective view of a package according to the present invention.

5A and 5B show a second embodiment of the present invention, wherein FIG. 5A is a plan view of a sheet base, FIG. 5B is a plan view of the folded state of the sheet base, and FIG. FIG. 4 is a plan view showing a state in which a package is manufactured by cutting and cutting.

FIG. 6A is a cross-sectional view before folding a sheet substrate,
(B) is sectional drawing of the state which folded the sheet base material.

FIGS. 7A and 7B are explanatory views showing a conventional package, in which FIG. 7A is a schematic perspective view and FIG. 7B is a front view.

[Explanation of symbols]

1A: Base sheet, 2A: Base sheet, 7: Storage section, 9
... commodity (object to be stored), 12 ... cut (separation means), 2
0: Laser device, 20a: Laser beam, 30: Base sheet, A: Package

Claims (3)

[Claims] 1. A plurality of storage portions (7) are formed at predetermined intervals on a plastic base sheet (1A), and a storage object (9) such as a product is provided in the storage portion (7). After storing the base sheet (2A) on the base sheet (1A)
, The superposed base sheet (1A),
(2A) and the laser device (20) for irradiating the laser light (20a) are relatively moved in each direction of the storage part (7), and the laser light (20a) is stored between the storage parts (7) and stored. Irradiating the outside of the portion (7) to weld and cut the base sheet (1A) and the base sheet (2A) to manufacture the package (A); . 2. The superposed base sheet (1)
A separating means (12) for separating the package (A) from the base sheets (1A) and (2A) is formed between the storage portions (7) in the relative movement direction in (A) and (2A). The method for producing a package according to claim 1. 3. A plurality of storage portions (7) are formed on one side of a plastic base sheet (30), and the storage portions (7) in which objects to be stored (9) are stored are arranged side by side. Then, the other side of the base sheet (30) is folded, and the laser beam (20) for irradiating the superposed base sheet (30) and the laser beam (20a) is relatively moved, and the laser beam is stored in the storage section. (7) By irradiating the space between the base sheets (30) and the outside of the storage section (7), the stacked base sheets (30) are welded together and cut to form a package (A).
And a method for producing a package.