JPS6226326Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an apparatus for manufacturing wrap film packaging using pillow packaging, and more specifically, a wrap film packaging that can eliminate the harmful effects of residual air while maintaining the sealing properties of pillow packaging. The present invention relates to a body manufacturing device.

[Prior Art] Wrap film is widely used as a self-adhesive packaging film for food packaging, and is generally rolled around a core material such as a paper tube. In packaging this rolled wrap film, pillow packaging technology is employed as one of the means to obtain a high moisture-proofing effect.

[Problems to be solved by the invention] According to this pillow packaging technology, a completely sealed packaging bag can be obtained, but on the other hand, air remains inside the packaging bag, resulting in packaging in an inflated state. There is.

If there is residual air inside the pillow packaging bag, if the residual air has a lot of moisture, the moisture will reduce the self-adhesiveness of the wrap film, and it will be bulky and difficult to handle, such as transportation. However, there is a problem that the packaging bag may burst during the transportation process.

To achieve this, [1] use a rolled packaging film that already has air vent holes,
[2] Drilling air vent holes after sealing is considered, but both have problems with production costs, and there is a need for improved technology for pillow packaging, specifically the development of manufacturing equipment for such packaging. Ta.

Therefore, the object of the present invention is to provide an apparatus for producing a wrap film package that satisfies such requirements, that is, an apparatus for producing a wrap film package that can eliminate the harmful effects of residual air while maintaining the sealing properties of pillow packaging. Another object of the present invention is to provide an apparatus for manufacturing a wrap film package that is easy to implement and that can form air vent holes during pillow packaging.

[Means for Solving the Problems] The present inventor completed the present invention as a result of intensive studies to achieve the above object.

That is, in the apparatus for manufacturing a wrap film package using pillow packaging according to the present invention, after a cylindrical wrap film supplied by a conveying means is wrapped with an outer film, a vertical seal forming sealer forms a vertical seal, and a horizontal seal is formed. In an apparatus for manufacturing a wrap film package, in which a forming sealer seals an end of the vertical seal that is turned to one side together with a horizontal seal,
A punching roll capable of forming an air vent hole in a portion of the pillow packaging bag corresponding to a lower position of the folded vertical seal is provided in the pre-process of forming the vertical seal and the horizontal seal.

[Function of the invention] The invention provides a punching roll in the pre-process of forming vertical seals and horizontal seals of a pillow packaging device,
Since the punching roll forms an air vent hole in the part of the pillow packaging bag that corresponds to the lower position of the vertical seal which is folded to one side and sealed together with the horizontal seal, the punching roll forms an air vent hole in the part of the pillow packaging bag that corresponds to the lower position of the vertical seal that is folded to one side and sealed together with the horizontal seal. Many air vent holes can be formed by the punching rolls on the lower side of the vertical seal.

In other words, "Collection of Well-Known and Commonly Used Techniques (2)" published by the Japan Patent Office, Volume 1
As seen in Chapter Packaging Machinery, pages 28-31 and 61-64, pillow packaging involves wrapping the packaged item in an outer film, forming a vertical seal with a center sealer, and forming a horizontal seal with a top sealer. During this horizontal sealing, the vertical seal is tilted to one side and sealed together with the horizontal seal.
Therefore, the present invention is characterized in that an air vent hole is provided in a portion of the exterior film on the side where the vertical seal is toppled and corresponds to the lower position of the vertical seal.
In other words, the present invention is a technology that does not completely seal the air vent hole, but hides it under a vertical seal to create a nearly sealed state, thereby preventing dust, etc. from entering through the air vent hole. .

In this regard, Utility Model Publication No. 50-11064 requires that an air vent hole be made at a position that fits within the area of the horizontal seal part, and the remaining air will be gradually discharged to the outside of the package through the air vent hole when this area is sealed. Although this technique can be easily implemented when the object to be packaged is a rectangular item, it cannot be applied to a cylindrical item such as the "wrap film" targeted by the present invention. In the case of packaging, it is not possible to sufficiently remove residual air from the air vent holes during seal cutting unless a special device such as a vacuum device is installed, so this technique is applied as is to wrap film packaging. That is difficult.

[Examples] Examples of the present invention will be described below based on the accompanying drawings.

Fig. 1 is a schematic diagram of a pillow packaging device, Fig. 2 is a perspective view showing the main parts of the manufacturing device of the present invention, Fig. 3 is a partially enlarged view of a package obtained by the manufacturing device of the present invention, and Fig. 4 3 is a perspective view showing a package obtained by the apparatus shown in FIG. 2. FIG.

In the figure, reference numeral 1 denotes a wrap film rolled around a core material 10 such as a paper tube, which is continuously fed in the direction of arrow A by a conveying means 2, and is wrapped in pillow packaging by a plastic film 3 for packaging. be done.

That is, the packaging film 3 is supplied and
Roll wrap film 1 according to the guide roll
As shown in the figure, the packaging film 3 is guided from a state where it is wrapped up to a state where both ends of the packaging film 3 are in contact with each other.

Then, it is guided through punching rolls 8, 8 to vertical sealing sealers, ie, a pair of sealers 7, 7 (see FIG. 2) indicated by S ₁ and S ₁ in FIG. 1.

As shown in FIG. 2, the punching rolls 8, 8 form air vent holes 9 at appropriate intervals on one end side of the packaging film 3 by means of punching protrusions 8a formed on their outer peripheral surfaces.

Here, the position where this air vent hole 9 is formed will be explained. As shown in FIG. 3, when the horizontal seal 5 is performed, the vertical seal 4 portion is tilted, for example, in the direction of arrow B, but the position where the air vent hole 9 is formed is near the vertical seal 4 portion, and This is the position where the bottom surface of the seal 4 portion becomes when it is folded down. this is,
This is to restrict free air circulation through the air vent hole 9 except when air circulation is required, and to restrict the inflow of dust and the like.

The number, size, shape, and spacing of the air vent holes 9 are not limited to those shown in the drawings. That is, any shape that does not adversely affect the tensile strength of the packaging bag is freely selected from among slits, perforations, nail holes, and other arbitrary shapes, but preferably several mm to a few mm. A plurality of wide slit-like or small-hole-like holes 9 are arranged in parallel. In order to obtain the holes 9 of various shapes mentioned above, the punching portions 8a of the punching rolls 8, 8 are used.
All you have to do is change the shape of .

The punching rolls 8, 8 described above can be provided at various stages before the vertical sealing process, and can be provided at the stage immediately before the vertical sealing process as described above, as well as at the stage of supplying and guiding the packaging film 3. It is also possible.

First sealers S _{1 ,} S ₁ , 7, 7 are provided in the post punching process using the punching rolls 8, 8, and the first sealers S ₁ , S ₁ , 7, 7 are used to seal the packaging film. The ends of the film 3 are sandwiched as shown in FIG. 2 and rotated in the direction of the arrow to seal the two films 4 by the stamp 7a on the joint surface.

Next, the second sealer indicated by arrows S ₂ and S ₂ performs horizontal sealing 5 and cutting, and the pillow packaging bag 6 is sealed.
get. Although the illustrated device shows a horizontal pillow packaging device, the vertical pillow packaging device is also the same in principle as described above.

In the above embodiment, as shown in FIG. 4, after the vertical sealing steps S ₁ and S ₁ , the vertical seal 4 portion is tilted in the direction of arrow B, and before or after horizontal sealing, the vertical seal 4 portion is tilted in the direction of arrow B, without obstructing air circulation. A step of sealing the vertical seals S ₃ and S ₃ may be added. In this way, exposure of the air vent hole 9 due to the center portion of the vertical seal 4 being rolled up can be more effectively prevented.

[Effects of the invention] According to the manufacturing apparatus according to the invention, it is possible to achieve the above-mentioned purposes, such as obtaining a package that does not have the harmful effects of residual air while maintaining sealing properties through pillow packaging. This technology leaves the air vent hole unsealed and hides it with a vertical seal, so cylindrical wrap films can be pillow-packed with air vented without the need for special equipment such as a vacuum device. Since the forming sealer is configured to seal the end of the vertical seal folded toward the air vent hole together with the horizontal seal, it is possible to effectively prevent dust and the like from entering from the air vent hole.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a pillow packaging device, Fig. 2 is a perspective view showing the main parts of the manufacturing device of the present invention, Fig. 3 is a partially enlarged view of a package obtained by the manufacturing device of the present invention, and Fig. 4 3 is a perspective view showing a package obtained by the apparatus shown in FIG. 2. FIG. 1: wrap film, 2: conveyance means, 3: packaging film, 4: vertical seal, 5: horizontal seal, 6:
Packaging bag, 7, 7, S ₁ , S ₁ : First sealer, 8, 8:
Punching roll, 8a: Punching protrusion, 9:
Air vent hole.

Claims (1)

[Scope of utility model registration request] After wrapping the cylindrical wrap film supplied by the conveying means with an exterior film, a vertical seal forming sealer forms a vertical seal, and a horizontal seal forming sealer wraps the end of the vertical seal that has been turned to one side. In an apparatus for manufacturing a wrap film package that is sealed together with a horizontal seal, a punching roll capable of forming an air vent hole in a portion of a pillow packaging bag corresponding to a lower position of the collapsed vertical seal in a pre-process of forming the vertical seal and the horizontal seal. 1. An apparatus for producing a wrap film package using pillow packaging, characterized in that it has: