JPS63317403A - Good packing method for apparatus - Google Patents

Abstract

PURPOSE:To make unpacking of goods easy by cutting a strip-like film lengthwise into two pieces using a knife before and behind a folding mechanism, bringing them back together with their edges pressingly overlapped and adhering the edges of these two pieces with an adhesive agent. CONSTITUTION:The edge 3 of a film 1 at one side of a packed material is folded and adhered to the outer surface of the film 1' at the other side thereof via an adhesive layer 4, forming an unpackable edge portion. Next, the strip-like film is fusion cut in a predetermined position perpendicular to the longitudinal direction for effecting the closure thereof. By this fusion cut, the previously packed goods 6 are sealed and cut off from the strip-like film. The adhesive layer 4 is normally formed by applying an adhesive agent or a two side adhesive tape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improved method and apparatus for packaging so-called pillow-pack products.

More specifically, the present invention relates to an automatic product packaging method and apparatus for forming a pillow set package having a structure that allows the product packaged by the pillow set product automatic packaging method to be taken out from the package extremely easily. be.

[Prior Art] In recent years, as an automatic product packaging method, a method of continuously and automatically packaging products using a pillow set packaging device has been widely used for packaging foods such as instant noodles.

This pillow set product packaging method involves supplying a strip-shaped original film, fusing and sealing it perpendicular to the longitudinal direction to create a pillow-shaped bag, storing the product in it, and sealing it by sealing the top. It is equipped with a folding mechanism, a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism in order of the flow of the original film.

Raw packaging machines such as Konoyo are usually used in vertical and horizontal types.

From a manufacturer's standpoint, the method of automatically packaging products using these pillow-pack packaging devices is a quick and inexpensive method of packaging products, which is extremely advantageous, and is currently widely used.

However, when removing a product packaged using this method from the package, it is extremely difficult to tear the package by hand, and taking out the product is time-consuming and unsatisfactory from a consumer's perspective. Ta.

A cut is usually made at the edge of the bag body to make it easier to remove the product from a plastic packaging bag, or making such a cut in a bag containing a product manufactured by the pillow set packaging method is a violation of the packaging mechanism. It looked impossible.

[Problems to be Solved by the Invention] Under these circumstances, the present invention provides an extremely easy packaging format that allows the packaged product to be easily taken out, which was not possible in the automatic packaging method for pillow set products. The purpose of this invention is to provide an improved product packaging method and device that can be used to package products.

Means for Solving Problem E] In order to achieve the above object by means other than providing cuts, the present inventors have conducted extensive research, and as a result, the present inventors have developed a folding mechanism in the order of the flow of the original packaging film. , in an automatic pillow set packaging apparatus having a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism, a method for sealing a package having an opening with a removable adhesive using a pillow set apparatus was devised, and the present invention I came to do this.

That is, the present invention includes a folding mechanism, a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism in this order. A long strip film is continuously fed to an automatic packaging device, and (A) the strip film is folded. When passing through the mechanism,
Both side edges are continuously bent inward at approximately 1/4 of the width of the strip film, and the both side edges are overlapped so that they can be connected to each other. (C) While continuously heat-sealing the overlapping portions of the both side edges as the film passes through the film, a fusing mechanism located downstream of the heat-sealing mechanism cuts the film in a direction perpendicular to the longitudinal direction at a predetermined position of the film strip. The strip-shaped film is closed by fusing to form the bottom of the bag body, forming half of the bag body portion, and (D) the side edge of the strip-shaped film is opened from the product insertion mechanism located upstream of the heat sealing mechanism. Insert the product into the half-formed bag body part from the opening, and (E) when the product storage part passes through the fusing mechanism,
A method for automatically packaging a pillow set in which a product is hermetically packaged by melt-cutting the strip film at a predetermined position in a direction perpendicular to the longitudinal direction, and a series of these steps, which also serves as the formation of the bag body in the step (C), are repeated continuously. (F) In front or behind the folding mechanism, the strip-shaped film is once cut off along the longitudinal direction at a position a certain distance from either side edge of the film using a knife, and then (G) adhesive layer is applied. When passing through the mechanism, an adhesive layer is applied to either side of the separated edges, and (H) in the width adjustment mechanism, both edges separated in the previous process are brought together, overlapped, and crimped. The present invention provides a method and device for packaging a product, characterized in that both cut-off edges are adhered to each other using the adhesive.

The above-mentioned bending mechanism (gusset folding), fusing mechanism (cutting by thermal force), sealing mechanism (fusion by thermal roll), separating mechanism (knife installation), width adjustment mechanism (guide roll operation), and adhesive application used in the present invention The mechanism (application nozzle or continuous application of adhesive tape) can be implemented by known methods commonly used in conventional bag making industry processes.

The present invention provides a method for packaging products by applying these known unit operations according to the order of the present invention, and an apparatus provided with each mechanism according to the order of the present invention.

There are no particular restrictions on the material of the long strip-shaped film used in the present invention, and materials conventionally used in pillow-type automatic packaging equipment, such as polyethylene, polypropylene,
polyolefins such as poly4-methylpentene-1,
Thermoplastic resin films such as polyvinyl chloride, polyester, polyamide, and polystyrene, or various films laminated with moisture-proof cellophane film or aluminum foil can be used.

In the present invention, a pillow set is equipped with a new mechanism added to a conventional pillow set automatic packaging device, that is, a pillow set that has a folding mechanism, a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism in the order of the flow of the original packaging film. In front of or behind the folding mechanism of the automatic packaging device, there is provided a mechanism for separating either side edge of the strip film, a mechanism for applying an adhesive layer to one side of the separated edge, and a mechanism for applying an adhesive layer to one side of the separated edge; By using a device that sequentially adds a mechanism for aligning the separated edges, overlapping them, pressing them, and gluing them together, the product can be automatically packaged. It is possible to produce a product storage package in which either side edge of the package is releasably sealed along the longitudinal direction via an adhesive layer.

Next, preferred embodiments of the present invention will be described.

First, a packaging film original is set in the packaging device,
After passing through a bending mechanism, both edges of the strip film are continuously folded inward at approximately 1/4 width, and the edges are overlapped so that they can be connected to each other.Then, the film is passed through a heat sealing mechanism. In a pillow set device that continuously heat-seals the overlapping portions of the both side edges by passing the film through a cutting mechanism, the strip film is passed through a separating mechanism in front or behind the bending mechanism, and the overlapping portions of either side edge are Once separated, the material is passed through an adhesive layer forming mechanism to provide an adhesive layer on either side of the separated edges, and then the separated edges are brought together, overlapped, and bonded by pressure. ,
Forms an unsealable side edge.

Next, in a fusing machine groove located downstream of the heat sealing mechanism, the band-shaped film is fused at a predetermined position in a direction perpendicular to the longitudinal direction to close the band-shaped film. By this fusing, the package containing the previous product in the previous process is usually solelized and separated from the strip film.

Next, after inserting a desired product into the open side edge of the band-shaped film sealed so that the product can be stored in this way, the product storage portion is passed through a fusing mechanism, and the band-shaped film is By melt-cutting the product perpendicularly to the longitudinal direction at a predetermined position, a package containing the product can be obtained.

The adhesive layer is usually formed by applying an adhesive or applying double-sided adhesive tape.

The adhesive is not particularly limited as long as it has good adhesion between the films and can be easily peeled off from each other, and any known adhesive may be selected and used. Can be done.

The package in which the product is stored in this way will be explained according to the attached drawings. Figs. 1, 2, 3, and 4 show different parts of the openable side edge of the package, respectively. FIG. 1 and FIG. 2 are plan views and cross-sectional views showing examples, in which the side edge 3 of the film 1 on one side of the package is folded back;
A structure is shown in which the adhesive layer 4 is bonded to the outside of the film 1' on the other side to form an openable side edge. on the other hand,
Figures 3 and 4 show that the side edge 3 of the film on one side of the package is folded back and adhered to the inside of the film on the other side via an adhesive layer 4 to form an openable side edge. This shows the structure that is present.

In the present invention, the product storage package is cut off by passing the product storage part through a fusing mechanism and cutting the film strip perpendicularly in the longitudinal direction at a predetermined position, and the film strip is closed by the fusing line. However, if desired, an anti-fusing agent layer may be applied to the fusing position as shown in Figure 5 to prevent the fusing ends of the easily openable side edges from being welded. It can be provided before forming the opening side edge. This anti-fusing agent layer is usually provided by applying printing ink.

[Effects of the Invention] The present invention provides an improved pillow-type automatic packaging device which is made by adding a new mechanism to the conventional gutter-type automatic packaging device, and an opening that can be opened using this device. Provided is an automatic product packaging method for producing a product storage package, the product storage package being extremely easy to take out products compared to that obtained by a conventional gutter set automatic packaging device, It has advantages that consumers like.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the structure of a packaging bag packaged according to the present invention, FIG. 2 is a side sectional view thereof, FIG. 3 is a plan view of another packaging bag, and FIG. The figure is a side sectional view thereof, and FIG. 5 is a plan view of another embodiment of the package. In the figure, 1 and 1' are the film, 2 is the center seal part, 3 is the side edge of the film, 4 is the adhesive layer, 5 is the fusing seal part, 6 is the product, and 7 is the anti-fusing agent layer. . Patent Applicant: Yamagata Gravure Co., Ltd. Agent: Mitsuru Uchiyama Figure 5 Procedural Amendment I, Indication of Case: 1988 Patent Application No. 148824 2
, Title of the invention Product packaging method and device 3, Relationship with the case of the person making the amendment Patent applicant address 2-99 Wakabayashi-cho, Yao City, Osaka Prefecture
Name: Yamagata Gravure Co., Ltd. Representative: Yamagata-Ki 4, Agent: 101 Address: 3rd floor, Kanda Wing Hatano, 2-4 Kanda Awajicho, Chiyoda-ku, Tokyo Telephone: 03 (254) 7H+6,
Subject of amendment Column 7 of detailed explanation of the invention in the specification, contents of amendment (1) 1-corona discharge after the sentence “This anti-fusing layer is normal” at the end of the first line of page 12 of the specification Insert "to be treated surface layer or". (2) Insert "etc." after "coating j" in the second line of page 12 of the specification.

Claims (1)

[Claims] 1. A long film strip is continuously fed into an automatic packaging device equipped with a folding mechanism, a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism in this order, and (A) the strip film is folded. When passing through the mechanism, both side edges are continuously folded inward at approximately 1/4 of the width of the strip film, and the both side edges are overlapped so that they can be connected to each other, and then (B) this When the material passes through the heat-sealing mechanism, while continuously heat-sealing the overlapping portions of the both side edges, (C) a fusing mechanism located downstream of the heat-sealing mechanism cuts the longitudinal length at a predetermined position of the strip-shaped film. (D) from a product insertion mechanism upstream of the heat sealing mechanism;
Insert the product into the half-formed bag body from the open side edge of the film strip; (E) When the product storage section passes through the fusing mechanism, insert the product in the longitudinal direction at a predetermined position of the film strip. In a pillow-type automatic packaging method in which a series of steps are continuously repeated to seal and package products by vertically melting the product and also to form a bag body in step (C), (F) before the folding mechanism; Or, at the back, the strip-shaped film is once cut along the longitudinal direction at a position a certain distance from either side edge of the film, and then (G) when passing through the adhesive layer application mechanism, the cut-off edge An adhesive layer is applied to one of the surfaces, and in the (H) width adjustment mechanism, both edges separated in the previous process are brought together and pressed together, and the adhesive is used to adhere both separated edges to each other. A product packaging method characterized by: 2. In a pillow-type automatic packaging device that is equipped with a folding mechanism, a product insertion mechanism, a heat sealing mechanism, and a fusing mechanism and operates in sequence, a mechanism for cutting off either side edge of the strip film is provided in front or behind the folding mechanism. , a mechanism for applying an adhesive layer to either side of the separated edges, and a mechanism for stacking the separated edges side by side, pressing them together and bonding them with the adhesive were sequentially added. An automatic product packaging device characterized by: