JPH0760912A - Easy-to-open packaging material - Google Patents

Abstract

PURPOSE:To provide a packaging material capable of easy opening not requiring notch processing or a tear tape and capable of being easily opened by the tip of a finger. CONSTITUTION:In an easily openable composite packaging material containing a synthetic resin film, numberless fine cracks are formed to the fine strip like regions 2 provided to the synthetic resin film constituting the outermost layer of the composite packaging material so as to run in the direction parallel to the flow direction x-y of the packaging material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping material mainly used for obtaining a plate-like chocolate, chewing gum, candy, and a package for household electric appliances such as dry batteries.

[0002]

2. Description of the Related Art Packaging of plate-shaped chocolate, chewing gum, candy, etc. is performed by wrapping the contents on a packaging material supplied in a wound state in a direction perpendicular to the flow direction of the packaging material. By doing so, a package is formed.

The opening of the packaging material for taking out the contents from the package is designed to break the packaging material along the flow direction of the packaging material.
For example, aluminum (15μ) / ethylene-vinyl acetate copolymer film (30μ) laminated sheet, OP coat / printing / paper (85g) / polyethylene (20g) / aluminum (9μ) / polyethylene (20μ) laminated sheet, printing A laminated sheet of / moisture-proof cellophane (300 µ) / polyethylene (20 µ) / aluminum (15 µ) / ethylene-vinyl acetate copolymer film (20 µ) is used.

Since the packaging material made of these packaging materials has high tear strength, it is difficult to open with a fingertip, and a jig such as a cutter or scissors is required for opening, or the opening performance is improved. First, a V-shaped notch or an I-shaped notch, which serves as a starting point for opening, is formed on the packaging material.
Or, it has been devised such as attaching a tear tape.

[0005]

However, in the case of the roll-wrapped packaging material, since the contents are packed by using the contents filling machine, it is difficult to perform the notching process. In addition, there is an adverse effect that notch chips are generated during notch processing.

Further, attaching the tear tape complicates the manufacturing process.

On the other hand, the present invention is composed of a composite packaging material having two or more layers containing a synthetic resin film, does not require notching or attachment of a tear tape, and can be easily opened with a fingertip. An object of the present invention is to provide a packaging material capable of obtaining a flexible package.

[0008]

The present invention comprises a composite wrapping material containing a synthetic resin film, and the synthetic resin film forming the outermost layer of the composite wrapping material has a direction parallel to the flow direction of the wrapping material. The feature is that innumerable minute scratches are formed in the running strip-shaped zone.

Further, the present invention comprises a composite packaging material containing a synthetic resin film, wherein the synthetic resin film forming the outermost layer of the composite packaging material has a strip-shaped zone running in a direction parallel to the flow direction of the packaging material. Innumerable minute scratches are formed on the
Moreover, the composite packaging material is characterized in that a synthetic resin film in which the flow direction of the packaging material and the stretch orientation direction of the synthetic resin film are aligned is laminated.

In the synthetic resin film laminated on the outermost layer of the easy-open packaging material of the present invention, the strip-shaped zone in which a myriad of fine scratches are formed is a packaging necessary for obtaining one package. One band may be provided for each material, but a plurality of bands may be repeatedly formed substantially uniformly over the entire packaging material.

Further, a synthetic resin film having innumerable minute scratches in a strip-shaped zone running in a direction parallel to the flow direction of the packaging material is a synthetic resin film formed by blasting a roll surface into a paper file. A synthetic resin film that forms fine holes by pressing and pressing a round blade assembly that performs fine hole processing when running between a roll and a rubber roll or when passing over a receiving roll that guides the film It is obtained by forming fine holes with a hot needle.

The strip-shaped zone in which a myriad of fine scratches are formed on the synthetic resin film may be a strip-shaped zone having a width of about 2 mm to 10 mm, and this strip-shaped zone covers the entire packaging material. If it is formed almost uniformly,
It suffices if the distance between the edge of this one strip band and the edge of the adjacent strip band is about 1 to 50 mm.

Further, when there are innumerable fine band-shaped zones on the end of the packaging body on the sealing portion side, the packaging body can be easily adjusted from both vertical and horizontal directions with a fingertip. You will be able to open it.

As a method for obtaining the packaging material of the present invention, after the composite packaging material containing the synthetic resin film is obtained, the synthetic resin film of the composite packaging material is given a predetermined number of minute scratches. Good, or after the synthetic resin film is subjected to a predetermined number of minute scratches, an extrusion coat layer of a thermoplastic resin may be formed on the film, or another lamination material may be attached to produce the film. good.

When a stretched and oriented synthetic resin film having a number of finely scratched strip-shaped zones is used, the flow direction of the packaging material and the stretched and oriented direction of the synthetic resin film are used. It is preferable to use the one that matches with.

That is, in the case of a uniaxially stretched synthetic resin film, it is preferable to use a uniaxially stretched synthetic resin film in which the flow direction of the packaging material and the uniaxially stretched direction of the synthetic resin film are the same. For this, it is preferable to use one in which the orientation of the packaging material in the flow direction is stronger than the orientation of the other direction.

The packaging material of the present invention having the above-mentioned structure can be a packaging body in the form of, for example, a caramel packaging body, a pillow packaging body, a three-sided sealing packaging body, a four-sided sealing packaging body, and the like. The packaging body can be opened by tearing the packaging material just by twisting the packaging body, for example, like a candy packaging body shown in FIG.

[0018]

The packaging material of the present invention has a strip-like shape that runs in the direction parallel to the flow direction of the packaging material due to the presence of numerous minute scratches formed on the outermost synthetic resin film of the packaging material. The presence of countless minute scratches forming a band deteriorates the band-shaped band.

For this reason, at the portion where there are numerous minute scratches forming a strip-shaped band, the action of extremely excellent tearability by the fingertip is exerted, so that a tear tape or the like is attached to the package or a notch is formed. There is no need to process it.

[0020]

EXAMPLES The specific constitution of the easily openable packaging material of the present invention will be described below based on examples.

Example 1 A uniaxially stretched polypropylene film (PG ₂₀ : Nisseki Synthetic Resin Products Co., Ltd.) was gravure-printed and then run in a direction parallel to the flow direction (orientation direction) of the polypropylene film. Countless fine scratches penetrating the polypropylene film were continuously applied to the strip-shaped zone at a distance of 15 mm between the edge of one strip-shaped zone and the edge of the adjacent strip-shaped zone. .

Next, this uniaxially stretched polypropylene film was laminated with an aluminum foil of 9μ through an extruded resin layer of a low-density polyethylene resin of 20μ, and the back surface of the aluminum foil was subjected to anchor coat treatment, and then the anchor coat treated surface. Then, a heat-sealing layer made of an extruded resin layer made of a low-density polyethylene resin having a thickness of 30 μ was laminated on the above to obtain a raw fabric.

This raw fabric is 160 mm wide and 140 mm long
It was cut into pieces to obtain a packaging material as an example of the present invention.

The laminated structure of this packaging material is a uniaxially oriented polypropylene film (20μ) / low density polyethylene resin layer (20μ) / aluminum (9μ) / anchor coat layer / low density polyethylene resin layer (30μ).

In the packaging material of this embodiment, the synthetic resin film forming the outermost layer of the composite packaging material is stretched and oriented in the flow direction, and the synthetic resin film runs in the direction parallel to the flow direction. Innumerable fine scratches are formed in the strip-shaped zone, the packaging material of the present invention, the synthetic resin film constituting the outermost layer of the composite packaging material, a strip-shaped zone running in a direction parallel to the flow direction. If innumerable minute scratches are formed on the
The synthetic resin film does not necessarily have to be stretched and oriented.

Thereafter, the width of 140
A plate-shaped chocolate having a size of mm, a length of 60 mm, and a thickness of 3 mm was pillow-packaged by heat welding using a heat-sealing layer to obtain a pillow package 1 shown in [FIG. 1].

In FIG. 1, the portion indicated by reference numeral 2 is a strip-shaped zone innumerable minute scratches in the uniaxially stretched polypropylene film which is the surface material, and is indicated by arrow XY. The direction is the flow direction of the packaging material.

The wrapping material of the pillow wrapping body 1 is deteriorated in the strip-shaped zone 2 innumerable minute scratches in the uniaxially stretched polypropylene film which is the surface material. The ring-shaped opening in the X-Y direction of the arrow could be easily performed with a fingertip.

Example 2 A 15 μ biaxially stretched nylon film (Uniathlon: Idemitsu Petrochemical Co., Ltd.) was stretched into a 10 mm wide strip-shaped zone running in a direction parallel to the flow direction of the nylon film. Numerous fine scratches penetrated through the nylon film.

Next, this biaxially stretched nylon film was laminated with paper (85 g) through an extruded resin layer made of a low-density polyethylene resin of 20 μ, and further, a thickness of 3 was applied to the paper.
An original fabric was obtained by laminating a heat-sealing layer made of an extruded resin layer of 0 μ low-density polyethylene resin.

This raw fabric was cut into a width of 105 mm and a length of 95 mm to obtain a packaging material as an example of the present invention.

Thereafter, the above-mentioned packaging material was used to package nine chewing gums by utilizing heat welding with a heat-sealing layer to obtain a package 3 shown in FIG.

In FIG. 2, the portion indicated by reference numeral 4 is a strip-shaped band in the biaxially stretched nylon film which is a surface material and has numerous minute scratches, and the tab 5 It was formed by matching the picking-up direction and the strip-shaped band.

By picking up the picking piece 5 of the packaging body 3 upward and pulling it in the direction of the strip-shaped zone 4 innumerable minute scratches, the strip-shaped zone 4 is easily torn, and the packaging is performed. The body 3 could be opened in a ring shape.

[0035]

According to the packaging material of the present invention, there is no need for notching or attachment of a tear tape, and a packaging body which can be easily opened with a fingertip is obtained, and the manufacturing cost can be reduced.

Further, since it is now possible to form a bag-containing packaged product that has conventionally been handled by boxing or wrapping paper, not only can the cost be reduced, but also the amount of dust can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a package made of the packaging material of the present invention.

FIG. 2 is a perspective view showing another example of the packaging body of the packaging material of the present invention.

FIG. 3 is a perspective view showing still another example of the packaging body of the packaging material of the present invention.

[Explanation of symbols]

1: Packing body 2: Narrow strip-shaped zone with numerous minute scratches formed on the surface material of the packaging material XY: Flow direction of the packaging material

Claims (2)

[Claims] 1. A composite packaging material containing a synthetic resin film, wherein the synthetic resin film forming the outermost layer of the composite packaging material has a myriad of fine bands in a strip-shaped zone running in a direction parallel to the flow direction of the packaging material. An easy-open packaging material that has various scratches. 2. A composite packaging material containing a synthetic resin film, wherein the synthetic resin film forming the outermost layer of the composite packaging material has countless fine bands running in a direction parallel to the flow direction of the packaging material. In addition, the composite packaging material is laminated with a synthetic resin film in which the flow direction of the packaging material and the stretch orientation direction of the synthetic resin film coincide with each other. Openable packaging material.