JP2591381B2 - Tearable packaging material and package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag for packaging a liquid or solid such as soy sauce, sauce, dressing, mayonnaise or the like, or a liquid or solid such as sugar or other powder seasonings. TECHNICAL FIELD The present invention relates to a tearable package adhered in a shape, and a tearable packaging material used for the package.

[0002]

2. Description of the Related Art At present, a seasoning-filled pouch supplied along with a lunch box, an instant noodle, and the like generally has, for example, a three-sided heat-sealing film having a heat-sealing layer made of a thermoplastic resin layer as an inner layer. A notch or notch is formed in the opening, and the opening is performed with the notch or notch as a starting end.

[0003] However, the notch or notch for opening must be inserted before and after the content is filled and heat-sealed, and a special notch or notch mechanism for that purpose is provided before and after the filling of the content. There has been a problem that it must be incorporated into the manufacturing stage, which leads to an increase in equipment costs and running costs.

In one notch or notch,
It is inconvenient to take out the contents one by one from a package in which many contents are packed.

[0005] Therefore, as disclosed in Japanese Utility Model Laid-Open No. 57-167832, a packaging film in which a number of notches or notches are formed in advance at the edge of the packaging film has been proposed. However, when a large number of notches or notches are formed on the edge of the long film in advance, when a large tension is applied to the long film such as when winding the long film around a paper tube, it is provided at the edge. There is a possibility that the film may be easily broken from the cutout or the notch, and the same problem occurs even when a long film is supplied to the filling and packaging machine.

To solve such a problem, Japanese Patent Publication No.
Japanese Patent Publication No. 301-301 proposes providing a notch at a fixed distance from the edge instead of forming a notch or notch at the edge of the film. By providing notches at regular intervals from the edge in this way,
Although there is no danger of breaking the long film during the winding operation,
The greater the distance from the edge to the notch, the more difficult it is to open, so it is preferable to minimize this distance. However, if this interval is too short, breakage is likely to occur as in the conventional case. For this reason, it is necessary to keep this interval at a preferable constant size.However, the notch insertion work is performed with the interval from the edge to the notch being kept constant. Is not easy and must be performed carefully, which causes a problem in terms of work efficiency.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and is intended to be used even when a large tension is applied to a long film in a winding operation on a paper tube or the like. An object of the present invention is to provide a tearable packaging material and a package that can be efficiently cut notched for opening without the film being easily broken.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, linear slits having a reverse slope are alternately provided along at least one side edge of a long film or a package as a tear opening for opening. A means of arranging them is adopted.

That is, the present invention relates to a tear film comprising a long film having a thermoplastic resin layer, the tear film having multiple opening tear holes arranged in at least one line along the inside of at least one side edge of the long film. A possible packaging material, wherein the tear-opening for multiple opening is formed by alternately arranging linear cuts having a reverse slope so that an extended line of one linear cut falls on a line of the next linear cut. The present invention provides a packaging material comprising:

[0010] Further, the present invention is characterized in that a film having a thermoplastic resin layer is bonded in a bag shape and at least one side edge is heat-sealed, and the heat-sealing is performed along the inside of the heat-sealed one side edge. A tearable package having at least a part of the portion and having at least one row of multiple opening tear openings formed therein, wherein the multiple opening tear openings alternately arrange linear cuts having a reverse slope. Further, the present invention provides a package characterized by being formed so that an extension of one linear cut is formed on the line of the next linear cut.

In the present specification, the tear opening for multiple opening is not limited to providing a tear opening only at a part of a side edge suitable for opening a package, but a side edge to be a tear opening of the package. Mean that a large number of tearing openings for opening are formed in advance at small intervals as a whole, and an opening person selects an arbitrary tearing opening to open. In this specification, the term “package” means not only a package that is filled with contents and the periphery thereof is completely sealed, but also a package that is in a state before filling with contents and formed in a bag shape.

The tear opening formed by the cut may be provided in a step of filling the contents, or may be provided later in a sealing portion filled with the contents, instead of being provided in advance in the packaging material.

[0013]

When one of the linear cuts is torn, the straight cuts of the reverse slope are torn one after another, whereby a new saw-toothed edge is formed. Therefore, it becomes possible to tear open the package from any part of the serrated edge.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a part of a tearable packaging material according to the present invention, and is arranged in a line along one side edge of a long film 10 having a thermoplastic resin layer. A multiple opening tear hole 11 is formed. The tear-opening opening 11 for multiple opening has a large number of linear cuts 11a and 11b having a reverse slope alternately arranged as shown in FIG.
From those formed so that the extension of one linear cut 11a hits the line of the next linear cut 11b (or those in which a large number of so-shaped cuts are continuously arranged, or those with a cedar pattern) Has become.

As shown in FIG. 2, when the long film 10 is heat-sealed in a bag shape, the multi-opening tearing opening 11 and the non-heat-sealing portion 1
3 may be formed, or may be formed only on the heat seal portion 12 as shown in FIG.

Further, the heat seal portion may be provided inside the multiple opening tear opening 11, and the multiple opening tear opening 11 may be a non-heat seal portion.

As shown in FIG. 4, when the package 14 formed with the multiple opening tear opening 11 is opened, a straight line is formed from one end of the multiple opening tear opening 11 or from any one place. When the cuts 11a and 11b are torn, the linear cuts 11a and 11b are torn one after another.

As a result, a serrated tearing end 15 is formed as shown in FIG. Therefore, as shown in FIG. 6, by tearing any one of the points A,
The package 14 can be easily opened.

The tear-opening opening 11 for multiple opening is shown in FIG.
Not limited to a row, two rows or more rows may be provided as shown in FIG. In the above embodiment, the cut 11
Although a and 11b are described as being linear,
These cuts 11a and 11b are not limited to linear ones, but may be of any shape such as curved ones.

The multiple opening tearing opening 11 can be formed at an arbitrary time, for example, in the state of a long film, after heat-sealing in a bag shape, or before filling the contents.

[0022]

As described above, according to the present invention,
Since the tearing opening for multiple opening is formed by alternately arranging linear cuts of opposite slope, it is not necessary to provide a cut exactly at an appropriate distance from the edge of the long film as in the related art. The tear opening for multiple opening may be provided at a position at an arbitrary distance from, so that the notch forming operation is also facilitated and the working efficiency can be promoted. In addition, since the cuts can be formed sufficiently away from the edge, there is no fear that the long film is easily broken even when a large tension is applied in a winding operation around the paper tube.

The present invention can be applied to a package capable of tearing a wide range of contents such as a liquid such as a liquid seasoning or a solid.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a tearable packaging material of the present invention.

FIG. 2 is a plan view of a main part of the package showing a state where the package is formed using the packaging material of FIG. 1;

FIG. 3 is a plan view showing another embodiment of the present invention.

FIG. 4 is a plan view for explaining a state when the package shown in FIG. 3 is opened.

FIG. 5 is a plan view showing a state after tearing a tear for multiple opening in the package shown in FIG. 4;

FIG. 6 is a plan view illustrating a state where the package in the state shown in FIG. 5 is opened.

FIG. 7 is a plan view of a main part of a packaging material showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Long film 11 ... Tear opening for multiple opening 11a, 11b ... Incision 12 ... Heat-seal part 13 ... Non-heat-seal part 14 ... Package 15 ... Saw-tooth end for tear

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Masamasa Yamazaki 1-5-1, Taito, Taito-ku, Tokyo Inside Toppan Printing Co., Ltd. (56) References Bikai 2-8756 (JP, U)

Claims (4)

(57) [Claims] 1. A tearable packaging material comprising a long film having a thermoplastic resin layer, wherein at least one row of tear holes for multiple opening is formed along the inside of at least one side edge of the long film. Wherein the tear-opening for multiple opening is formed by alternately arranging linear cuts having a reverse slope, and forming an extension of one linear cut on the line of the next linear cut. Characteristic packaging material. 2. The packaging material according to claim 1, wherein the multiple opening tear openings are arranged in two or more rows. 3. A film having a thermoplastic resin layer is stuck in a bag shape and at least one side edge is heat-sealed, and at least one side of the heat-sealed portion is formed along the inside of the heat-sealed one side edge. A tearable package having a plurality of tear-opening openings arranged in at least one row in such a manner that the tear-opening multiple tear-opening openings alternately arrange linear cuts having a reverse slope. A package body formed by forming an extension of a linear cut so as to hit a line of the next linear cut. 4. The package according to claim 3, wherein the multiple opening tear openings are arranged in two or more rows.