JP2012192973A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag capable of being easily unsealed by an adult but hardly unsealed by a child such as an infant, in a bag for packaging a long article such as a ballpoint pen being stationery or a knife.SOLUTION: A notch 8 for tearing this packaging bag 1 is provided at a seal part of the packaging bag 1. A perforated line 8a is provided at the part to be torn and is linearly torn as a guide. A tearing stop line 8c is provided at the tearing destination to stop the tearing, and the tearing stop line 8c is then used as a new notch for the tearing to a storage part 5 of the packaging bag 1. Accordingly, an opening is thereby formed so that an article may be taken.

Description

  The present invention considers a plastic film packaging bag that mainly wraps long stationery items such as ballpoint pens and swords, more specifically, a function that prevents infants and others from accidentally opening them and injuring them with swords etc. Related to the packaging bag.

Products are sold in clear plastic packaging film containers.
There are many different shapes and sizes of products, for example, ballpoint pens such as stationery and swords that are long and hard, products with many small items, foods, liquids, powders, etc. There is.
In each packaging container, when a purchaser purchases a product and opens it, various opening methods are taken so that the opening is easier.
For example, a triangular groove is provided on the top or side of the packaging film, the upper and lower parts of the container are picked and torn, the upper part of the container is cut off and the internal product is taken out, and the perforated part is put in the cut part Some have taken measures to facilitate tearing, and there are those in which two films are sealed at both edges to cut one film of a bag-like container to the front side to create a take-out port.

Many things that have been devised for the opening have been proposed.
In Patent Document 1, a triangular groove for opening is provided on the side surface of a packaging bag. This is because two sheets of a base material layer and a sealant layer are laminated with the sealant layer on the inner surface side, and the edges of the sheet material are bonded to each other to form a sealed bag. The vicinity is opened by tearing the adhesive portion on one side as a starting point. The purpose is to reliably stop tear propagation by leaving a tear stop line so as to cross the tearing direction in the middle and to leave the tear piece part on the bag surface.

  Patent Document 2 discloses a packaging bag characterized in that an opening notch provided in a vertical seal portion or a horizontal seal portion is provided within the range of the seal portion so that one end of the notch is not opened outward from the outer edge of the seal portion. The present invention provides an erroneous opening prevention type packaging pack designed so that children and the like cannot easily open the packaging pack using this notch.

JP 2007-276823 A Utility Model Registration No. 3073049

By the way, in the case of a packaging bag that wraps a hard and long stationery such as a ballpoint pen or a small sword and is intended for a packaging bag that is difficult for a child and easy for an adult to open, in Patent Document 1 described above, it is opened with a single operation. It will not be difficult for children to open. Further, in Patent Document 2, since the packaging bag must be folded in accordance with the position of a small notch provided in the seal portion, it cannot be said that the opening structure is easy for an adult to open because the notch is difficult to find.
Therefore, when opening on the premise of packaging of a relatively long product, there is a demand for a simpler and more reliable way for an adult to open and a child such as an infant more difficult to open.

  An object of the present invention is a bag for packaging a solid long article such as a ballpoint pen or a knife as a stationery, for example, along a tear line from a notch on the outer edge side of a seal portion provided on one side of the packaging bag. A packaging bag that can be opened by two operations of tearing the seal part to the tear stop line and then tearing the film in the direction of the article containing part using the tear stop line as a new notch. Is to provide.

In order to achieve the object, the packaging bag according to claim 1 according to the present invention is provided with a notch for tearing the film at the seal portion of the packaging bag, a tear stop line at the seal portion, and from the notch to the tear stop line. It is a packaging bag characterized by providing a tear line at a position where
A packaging bag according to a second aspect of the present invention is the packaging bag according to the first aspect, wherein a perforation is used for the tear line.
A packaging bag according to a third aspect of the present invention is the packaging bag according to the first or second aspect, wherein the tearing stop line of the packaging bag also serves as a notch as a starting point of the tearing start means when opened. is there.
The packaging bag according to claim 4 of the present invention is a packaging bag characterized by having a vertically long rectangular shape in the invention according to claim 1, 2 or 3.
The packaging bag according to claim 5 of the present invention is the packaging bag according to the invention according to claim 1, 2, 3 or 4, wherein the seal portion has a hole for suspending the packaging bag.

  According to the above configuration, when opening for taking out the product contained in the packaging bag according to the present invention, the opening is formed by tearing the packaging bag from the notch to the tear stop line by hand, and then tearing the tear bag from the tear stop line to the accommodating portion. The formed article can be removed. Since it is necessary to tear the packaging bag twice in order to take out the article, it is difficult for a child such as an infant to take out the article easily. However, adults can easily open by reading the opening method printed on the packaging bag, and the seal part is perforated so as to tear it cleanly in a straight line. The packaging film structure forming the packaging bag is reasonably good when the stretched polypropylene (OPP) base material has a thickness of about 20 μm and the unstretched polypropylene (CPP) base material has a thickness of about 30 μm. It can be opened. When the thickness of the CPP base material exceeds 30 μm, resistance to tearing occurs, and the hand force at the time of opening must be increased. Further, if the thickness is less than 30 μm, for example, 20 μm, less force is applied, but it can be easily broken with a single force. Therefore, an OPP thickness of 20 μm and a CPP substrate thickness of 30 μm are suitable for the film structure to be opened.

It is a front view which shows embodiment of the packaging bag by this invention. It is a figure which shows the state which accommodated the ball-point pen as an article | item in the packaging bag by this invention. It is a fragmentary view for demonstrating the opening method of the packaging bag by this invention. It is a fragmentary view for demonstrating the structure of a packaging bag. It is a fragmentary view for demonstrating the structure which joined the film of 2 sheets which forms a packaging bag by heat seal.

Hereinafter, the present invention will be described in detail with reference to the drawings.
In the description, a configuration in which OPP and CPP are bonded together is used.
FIG. 1 is a front view showing an embodiment of a packaging bag according to the present invention.
The packaging bag 1 is formed of a rectangular transparent film, and the horizontal and vertical dimensions are, for example, 50 mm and 225 mm. It has a shape and size suitable for packaging items such as ballpoint pens and small swords.
The front wrapping film 1a and the back wrapping film 1b are formed into a bag shape by joining the head heat seal part 2 and the side heat seal parts 3 and 4, and the accommodating part 5 is formed inside.

The vertical dimension of the heat seal region of the head heat seal part 2 and the width of the side heat seal parts 3 and 4 are, for example, 35 mm and 5 mm, respectively. A hole 7 is formed in the approximate center of the head heat seal portion 2 to be locked to a key-shaped protrusion of the display shelf.
The article can be packaged by putting the article into the accommodating portion 5 through the article insertion opening 6 and heat-sealing the article insertion opening 6.

A notch 8 is provided above the boundary 2 a of the housing part 5 of the head heat seal part 2. The notch 8 may have only a cut line in addition to the V shape and the pentagon. The notch 8 is used to tear the packaging bag in the short side direction. Further, a perforation 8a serving as a guide for straight tearing is provided at the position of the tear line. Also, if the tear is not straight but cut diagonally, the C-shaped perforations 8b are on both sides of the perforation 8a so that the tearing direction returns to the perforations 8a. Becomes a further guide role and is torn straight. There is a tear stop line 8c at the tip of the tear, and the tear stops at the tear stop line 8c. The tear stop line 8c is a break that penetrates from the front packaging film 1a to the back packaging film 1b of the packaging bag, and its length is approximately 10 mm. The tear stop line 8c is formed at a substantially central position of the perforation 8a. In addition, the dimension of the joint part and cut | interruption of the perforation 8a repeatedly formed are 0.5 mm and 0.5 mm, respectively.
In the vicinity of the perforation 8a and the tearing stop line 8c, there are unsealing method display arrows 9a and 9b displaying the unsealing method in an easily understandable manner.

FIG. 2 shows a state in which a ballpoint pen is housed as an article in the packaging bag according to the present invention.
A ballpoint pen 20 having a clip 22 is accommodated in the accommodating portion 5. After the ballpoint pen 20 is inserted, heat sealing is performed to form a bottom heat sealing portion 27 and seal it.

FIG. 3 shows a method for opening a packaging bag according to the present invention.
The part shown with a dotted line is the state before opening. First, the upper bag portion 24a is grasped with one hand, the upper bag portion 24c is grasped with the other hand, and the upper bag portion 24a is torn in the short side direction of the packaging bag. This is in the direction of arrow A in FIG. The torn film stops at the tear stop line 8c, and also serves as a notch for tearing the tear stop line 8c in a new long side direction. At this time, the opening portion is not formed because the portion that is torn using the perforation 8a as a guide is a heat-sealed portion. Here, the hand holding the bag upper portion 24a is changed to the bag upper portion 24b, and the packaging bag is torn in the long side direction of the bag with the hand holding the bag upper portion 24c. This is in the direction of arrow B in FIG. The film packaging bag torn in the long side direction reaches the accommodating portion 26 from the head heat seal portion 24 over the boundary 24d, and the opening portion 28 is formed. The size of the opening 28 can be adjusted by the distance to tear the bag upper portion 24c. In the case of FIG. 3, the tearing is stopped and the ballpoint pen 20 is taken out when the opening 28 becomes an appropriate size that allows the ballpoint pen 20 to be taken out.
In order to perform such complicated opening, it is necessary to display the opening method, etc., and it is a packaging bag that is easy to open for adults who can read and understand the label, but for children such as infants who can not understand by reading the label It cannot be opened easily.

FIG. 4 is a partial view for explaining the structure of the packaging bag according to the present invention.
The laminated structure of the front wrapping film 1a and the back wrapping film 1b constituting the wrapping bag 1 consists of a 20 μm thick OPP 10, a printing layer 12 for characters, figures, photographs, etc., an adhesive layer 13, and a 30 μm thick CPP 11 layer. It is made up of. The thicknesses of the OPP 10 and the CPP 11 are determined in consideration of ease of cutting and stickiness when opened. For example, when the thickness of the OPP 10 is 20 μm as shown in FIG. 4 and the thickness of the CPP 11 is 20 μm to 40 μm, the CPP 11 has a thickness of 20 μm, and the perforation is cut off with a weak force when opened. On the contrary, when the thickness of the CPP 11 is 40 μm, it is relatively sticky and the perforation cannot be easily separated. OPP 20 μm and CPP 30 μm shown in the embodiment according to the present invention are the most suitable structures for opening.

FIG. 5 is a partial view for explaining a structure in which two films forming a packaging bag are joined by heat sealing.
When the front packaging film 1a and the back packaging film 1b having the structure shown in FIG. 5 are joined, heat is applied to the region of the front packaging film 1a where the CPP 11a and the CPP 11b of the back packaging film 1b are heat sealed to melt and join. A heat seal 14 is formed between the CPP 11a of the front wrapping film 1a and the CPP 11b of the back wrapping film 1b and is securely bonded.

In the above embodiment, the packaging bag has a rectangular shape. However, the shape is not limited to this, and other aspect ratios, such as a rectangular shape, a gusset bag, a gusset bag, and a curved outer shape may be used. It can be implemented similarly. Moreover, although the example of the thing of a linear form and a C-shaped thing was shown as a shape of a perforation, only any one may be sufficient.
Furthermore, although the example which uses the film which joined OPP20micrometer and CPP30micrometer for the packaging film which forms a bag was shown, even if the structure of a packaging film is not a thing of such a material and thickness ratio, it can implement similarly. it can. Although the example which joins a packaging film by heat sealing was shown, you may join using an adhesive agent.

  It is a packaging bag that wraps goods such as stationery with film.

DESCRIPTION OF SYMBOLS 1 Packaging bag 1a Front packaging film 1b Back packaging film 2, 24 Head heat seal part 2a, 24a, 24d Boundary 3, 4, 25, 26 Side heat seal part 5, 26 Housing part 6 Article insertion opening 7, 29 hole 8 Notch 8a Perforation 8b C-shaped perforation 8c Tear stop line 9a, 9b Opening direction indication arrow 10 OPP (stretched polypropylene)
11 CPP (unstretched polypropylene)
12 Printing layer (ink)
13 Adhesive layer 20 Ballpoint pen 21 Knock part 22 Clip 23 Ballpoint pen tips 24a, 24b, 24c Bag upper part 27 Bottom heat seal part 28 Opening part

Claims (5)

  A packaging bag having a seal portion and a storage portion, having a notch at one end of the seal portion, a tear line induced by the notch, and a tear stop line intersecting the tear line bag.   The packaging bag according to claim 1, wherein the tear line is a perforation.   The packaging bag according to claim 1 or 2, wherein the tear stop line also serves as a start of a tear starting means.   4. The packaging bag according to claim 1, wherein the shape of the packaging bag is a vertically long rectangular shape.   The packaging bag according to claim 1, 2, 3, or 4, wherein the sealing portion of the packaging bag has a hole for suspending the packaging bag.

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