JP2003137341A - Packaging bag from which content is easily taken out and packaged item made by using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag the whole of which can be linearly easily opened and from which a content is easily taken out and to provide a packaged item made by using it. SOLUTION: The packaging bag (10) is composed of 2 or more-layered composite film (100) having an innermost seal layer (101) and a base film (102), perforation being arranged on at least the base film (102), and has an unsealed portion (12) projecting outward of a sealed portion (11) of at least one side wherein the base film has 2 or more perforations (a), at least 2 perforations (a and a) do not cross each other, a seal portion having an unsealed portion (12) in the outward portion is arranged in the extension of the perforation and the 2 perforations cross the sealed portion (11) while the 2 perforations do not cross each other to reach the unsealed portion (12) of the outward seal portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag from which contents can be easily taken out and a package using the same, and more particularly to a packaging bag which can be cut linearly and from which contents can be taken out easily and a package using the same. Regarding the body

[0002]

2. Description of the Related Art Conventionally, a packaging bag in which articles such as snacks such as potato chips are packaged has a structure in which the outside air is blocked to prevent the contents from being deteriorated and the contents are prevented from being oxidized, or the contents are protected from light. It has the function of preventing promotion. It also has a function of preventing the quality of the contents from deteriorating due to moisture absorption during storage or conversely drying.

A method of sealing these packaging bags by heat-sealing with a sealing layer provided on the inner surface is generally used. Therefore, in order to achieve the above-mentioned purpose of the packaging bag, it is necessary that this sealing layer has a sufficient sealing property, and that the heat seal strength is sufficient so that the sealing portion does not come off during the process of transportation and the like. It is necessary to have

However, the excessive heat-sealing strength for protecting the contents, on the contrary, cannot be easily opened by hand when used by consumers, and it is less necessary to use tools such as scissors. There wasn't. In addition, a large amount of force is required at the time of opening, and even if the bag can be opened, the content is popped out at the moment of opening and the opening interface is destroyed, which is not aesthetically pleasing. From such a problem, there has been proposed a packaging bag that maintains a sufficient sealing property for protecting the contents and can be easily opened by hand.

As an easily openable packaging bag in which the contents can be easily taken out, for example, a packaging bag as shown in FIGS. 5 and 6 is known. The former is a form in which the cutting line (a) is provided on the front and back sides near the upper edge of the packaging bag (20). Although it is relatively easy to open, there is a problem that it is difficult to take out the contents because the cutting line is provided at the end of the bag. Also,
The latter has a cutting line (a) at the center of the packaging bag (20).
This is a form in which only one is provided on either the front side or the back side of the bag. The contents are easy to take out, but when the bag is torn along the cutting line, it often bends, and there is a problem that it is difficult to open.

[0006] As a technique for easily opening the contents and for easy opening, for example, a base film is slit to a cut width and stuck to a sealant layer to prepare a composite film for a packaging bag, and after the bag is made, the cut width is cut. Techniques such as pulling parts to open the packaging bag (snap-open processing) and techniques to create a packaging bag using a resin with easy peeling property for the sealant layer and open it from the seal part (easy-open sealant) are known. Has been.

However, in the former case, the seal portion is difficult to peel off,
The latter has a problem that it is difficult to obtain a linear cut property.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems related to the ease of taking out the contents of a packaging bag and the ease of opening, and the entire bag can be easily linearly opened. An object of the present invention is to provide a packaging bag in which contents can be easily taken out and a packaging body using the packaging bag.

[0009]

According to a first aspect of the present invention, a seal layer having heat sealability is disposed as the innermost layer, and at least the base film is laminated with a cutting line. A packaging bag made of a composite film of two or more layers, in which an unsealed portion projects to the outside of at least one side of the sealing portion, and the base film having the cutting line has two or more cutting lines, At least two cutting lines are provided so as not to intersect with each other, and an extension of the cutting line has a seal portion having an unsealed portion on the outside, and the two cutting lines intersect with the sealing portion without intersecting each other and seal. The packaging bag is characterized in that it reaches the unsealed portion outside the portion, and the contents are easy to take out.

As described above, according to the first aspect of the invention, the base film having the cutting lines has two or more cutting lines,
At least two cutting lines are provided so as not to intersect with each other, and an extension of the cutting line has a seal portion having an unsealed portion on the outside, and the two cutting lines intersect with the sealing portion without intersecting each other and seal. Since it reaches the unsealed part outside the part, the packaging bag is opened along the cutting line by tearing the composite film of the unsealed part outside the sealing part so as to open each other, and the contents can be easily opened from the packaging bag. You can take things out. By properly setting the distance between the two cutting lines, the contents can be taken out more easily.

According to a second aspect of the present invention, in the first aspect of the present invention, the unsealed portion is such that the overlapping composite films have different lengths over the entire film width or a part of the film width. It is an easy packaging bag.

As described above, according to the second aspect of the invention, the unsealed portion is the entire film width or a part thereof.
Since the lengths of the overlapping composite films are different, it is possible to easily grasp the two overlapping composite films when opening.

The invention of claim 3 is the same as claim 1 or 2.
In the invention, the two cutting lines are provided in parallel, which is a packaging bag from which the contents can be easily taken out.

As described above, according to the invention of claim 3, 2
Since the two cutting lines are provided in parallel, the packaging bag can be neatly opened in a band shape by tearing the unsealed portion sandwiched between the two cutting lines along the cutting lines.

The invention of claim 4 is the same as claim 1 or 2.
In the invention, the two cutting lines are provided in a tapered state along the outer unsealed portion of the seal portion, and the packaging bag is easy to take out the contents.

Thus, according to the invention of claim 4, 2
The cutting line of the book is tapered in accordance with the unsealed portion outside the seal portion. Therefore, if the unsealed portion sandwiched between the two cutting lines is torn along the cutting line. , The packaging bag becomes wider as it goes deeper to make it easier to take out the contents.

Further, the invention of claim 5 relates to claims 1, 2 and
In the invention of 3 or 4, the packaging bag is characterized in that the two cutting lines are continuously provided from the leading edge to the terminal edge of the bag, and the contents can be taken out easily.

Thus, according to the invention of claim 5, 2
Since the cutting line of the book is continuously provided from the leading edge to the terminal edge of the bag, it is possible to cleanly open the bag to the end along the cutting line.

Further, the invention of claim 6 relates to claim 1, 2,
It is a package in which the contents are stored using the packaging bag described in 3, 4, or 5.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A packaging bag according to the present invention in which contents can be easily taken out will be described in detail below based on an embodiment. The packaging bag (10) of the present invention in which contents can be easily taken out has, for example, as shown in FIGS. 1 and 2, a seal layer (101) having a heat-sealing property as an innermost layer, and at least a base film ( 102) is provided with a plurality of cutting lines (a, a) and is laminated with two or more layers of composite film (100)
It has a layer structure consisting of.

Then, the seal portion (1
A base film (1) provided with the cutting line in a packaging bag (10) having an unsealed portion (12) protruding outside of (1).
02) has two or more cutting lines, and at least two cutting lines (a, a) are provided so as not to cross each other.
In the extension of the cutting line, there is a sealing part (11) having the unsealed composite film on the outside, and two cutting lines (a, a)
Has a structure that intersects with the seal portion (11) without intersecting and reaches the unsealed portion (12) outside the seal portion.

As the seal layer (101) constituting the composite film (100), a film having heat sealing property and easy peeling property may be used, and films such as polyethylene (PE) and unstretched polypropylene (CPP) are preferable. It may be used and may include a vapor deposited layer such as an aluminum vapor deposited unstretched polypropylene film.

The base film (102) is preferably a plastic film such as biaxially oriented polypropylene (OPP), polyethylene terephthalate (PET) or nylon (Ny). The stretched plastic film is more preferable because it has directionality when it is torn.

The base film (102) and the seal layer (10)
An intermediate layer (103) as shown in FIG. 2 may be provided between 1). The intermediate layer may be provided when, for example, the packaging bag is provided with a barrier property or the like. Middle layer (103)
Is not limited to one layer, and may have a multi-layer structure. The film used for the intermediate layer is not particularly limited, and various known films can be used as necessary.

As a method of providing a plurality of cutting lines (a, a) on the base film (102), a cutting blade such as a razor is applied to the base film (102) on a dry laminator or an extrusion laminator. Immediately after that, a method of combining with the seal layer (101) (in this case, the cutting lines are parallel to each other), or a method of providing a plurality of cutting lines (a, a) in synchronization with the pattern at the time of printing (in this case, The cut lines can be parallel or non-parallel to each other), i.e. the printing of the film is usually done by passing the web through a phosphor printing machine, so with a bladed roll to match the pattern. A cutting line can be provided. This can be performed off-line due to the facility, but in-line operation is more cost effective in consideration of the number of steps. Furthermore, it is more advantageous to laminate the seal layer (101) in-line by a dry laminating method or an extrusion laminating method.

As a method of providing a narrowed portion on the side of the film which has no cutting line in the unsealed portion, for example, after unwinding the unwound film with a punch on a bag-making machine, the front and back films are removed. Obtained by stacking and sealing.

The method of providing the cutting line (a) on the above-mentioned base film (102) is carried out by the base film and the intermediate layer (10
It can also be applied to a two-layer film obtained by laminating 3).

The packaging bag may be in any form such as a two-side seal bag, a three-side seal bag, a back seal bag, a gusset bag and a standing pouch. Further, as shown in FIGS. 3 and 4 as one example, various usages are possible depending on the usage state and the like. For example, in FIG. 3, (a) is 2
The cutting lines are shown in parallel, (b) shows the unsealed parts at both ends of the packaging bag, (c) has three cutting lines, one of which is stopped halfway Shows the state of
(D) shows a state in which the length of one film of the unsealed portion is made shorter than the length of the other film. In addition, in FIG. 3, the packaging bags are all three-side sealed bags.

In any of the packaging modes, the packaging bag is opened along the cutting line by tearing open the overlapping composite films of the unsealed portions of the finished packaging bag, and the contents can be easily taken out. it can.

[0030]

As described above, since the packaging bag of the present invention in which the contents can be easily taken out is formed by slitting the base film into the cutting width and laminating the resin film having the peeling property which is the seal layer. The packaging bag can be easily opened in any width and the contents can be easily taken out. Furthermore, the package containing the contents by using this packaging bag becomes a package from which the contents can be easily taken out.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of a packaging bag of the present invention in which contents can be easily taken out.

FIG. 2 is a cross-sectional explanatory view showing an example of the layer structure of a composite film that constitutes a packaging bag of the present invention in which contents can be easily taken out.

3A to 3D are schematic explanatory views showing another embodiment of the packaging bag of the present invention in which contents can be easily taken out.

4 (a) to (c) are explanatory views showing still another packaging form of the packaging bag of the present invention in which the contents can be easily taken out. (A) is a two-sided seal bag, (b) is a gusset bag, c) shows a standing pouch.

FIG. 5 is a schematic explanatory view showing an example of a conventional packaging bag from which contents can be easily taken out.

FIG. 6 is a schematic explanatory view showing another example of a conventional packaging bag from which contents can be easily taken out.

[Explanation of symbols]

10 ... Packaging bag 11 ... Seal part 12: Unsealed part 20 ... Packaging bag 100 ... Composite film 101 ... Sealing layer 102 ... Base film 103 ... Middle layer a ... Cutting line

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Claims (6)

[Claims] 1. A seal layer having heat sealability as an innermost layer, and a composite film of two or more layers laminated with cutting lines provided on at least a base film, wherein at least one side has a seal portion. Is a packaging bag in which an unsealed portion is projected to the outside, and the base film provided with the cutting lines has two or more cutting lines, and at least two cutting lines are provided so as not to intersect each other. , There is a seal part where the unsealed part is outside in the extension of the cutting line, 2
A packaging bag that is easy to take out the contents, characterized in that the cutting line of the book intersects the seal portion without intersecting and reaches the unsealed portion outside the seal portion. 2. The packaging bag according to claim 1, wherein the unsealed portion has different lengths of the overlapping composite films in the entire film width or a part thereof. 3. The packaging bag according to claim 1 or 2, wherein the two cutting lines are provided in parallel with each other. 4. The contents take-out according to claim 1 or 2, wherein the two cutting lines are provided in a tapered state along the outer unsealed portion of the seal portion. Easy packaging bag. 5. The package for easily taking out the contents according to claim 1, wherein the two cutting lines are continuously provided from the leading edge to the trailing edge of the bag. bag. 6. A package in which the contents are stored using the packaging bag according to claim 1, 2, 3, 4 or 5.