JP2012236633A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag with a hanging hole, wherein a stamping residue is not mixed to the packaging bag, and wherein an end of a cut is not torn when hanged on a hook of a display table or the cut is caught during handling.SOLUTION: This packaging bag is provided with a hanging hole near an upper end. The hanging hole is provided with a substantially circular-arc cut and two straight cuts which are provided so that both ends of the circular-arc cut are located at a lower, upper, or lateral side and which extend horizontally outward from both ends of the substantially circular-arc cut.

Description

  The present invention relates to a packaging bag.

  A packaging bag for packaging various products such as confectionery, stationery, electric parts, and miscellaneous goods includes a packaging bag in which a hanging hole is provided at the top of the packaging bag. Such a packaging bag has a header portion formed by a wide seal at the top of the packaging bag, a suspension hole is drilled in the header portion, and the suspension hole is hung on a hook or the like of a store display stand, It is to be displayed.

  As shown in FIG. 4, there is a packaging bag in which the periphery of the hole is completely cut and the hanging hole 4 is provided as a hole (for example, Patent Document 1). However, in the manufacture of packaging bags, when punching holes are provided in the bag making process, the extracted parts become debris that is mixed into the packaging bag after bag making and filled with the contents. May cause a serious accident involving foreign matter.

  Therefore, recently, there is a packaging bag in which the periphery of the suspension hole 4 is not cut completely, but is cut while leaving a part, and the packaging material of the hole portion is left connected to the packaging bag. However, as shown in FIG. 5A, a packaging bag provided with a hanging hole 4 with both ends of the arc-shaped cut 4a on the lower side, or both ends of the arc-shaped cut 4a as shown in FIG. 5B. In the packaging bag provided with the hanging hole 4 on the upper side, a load is applied due to the weight of the product, and the packaging bag may be torn from the end of the cut.

  In order to prevent the packaging bag from tearing from the end portion of the notch, as shown in FIG. 6, the ceiling seal portion 1 has a hanging hole 4 by notching, and the both ends of the notch are arranged at the both ends of the notch. A gusset-type packaging bag having a shape that ends with a semicircular arc-shaped cut 4c has been proposed (Patent Document 2).

  Known documents are shown below.

JP 2005-212884 A

  In the packaging bag provided with the suspending hole by cutting, the removed part does not become a residue, and the residue is not mixed into the packaging bag and does not cause a serious accident of foreign matter, but FIG. In the packaging bag provided with the hanging hole 4 by the arc-shaped notch 4a as shown in FIG. 5B, when the hook is hung on the display stand or when the notch is caught during handling, There is a risk of tearing from the edge. Moreover, when it is set as the suspension hole of a shape like FIG. 6, the design of a shape and the design of the blade for a cutting process are difficult.

  The present invention is a packaging bag provided with a hanging hole, in which the extracted residue is not mixed in the packaging bag and is hooked on a hook such as an exhibition stand or when a cut is caught during handling. It is an object of the present invention to provide a packaging bag that does not tear from the end of the cut.

  The present invention has been made in view of the above problems, and the invention of claim 1 is a packaging bag provided with a hanging hole near the upper end, the hanging hole having a substantially arc-shaped cut, The packaging bag is characterized by being provided by two linear cuts extending horizontally outward from both ends of the arc-shaped cut.

  According to a second aspect of the present invention, the packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided below the substantially arc-shaped cut. It is.

  The invention according to claim 3 of the present invention is the packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided on the upper side of the substantially arc-shaped cut. is there.

  According to a fourth aspect of the present invention, the packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided on the lateral sides of the substantially arc-shaped cut. It is.

  Since the packaging bag of the present invention is provided with a hanging hole by cutting, the cut residue is not mixed into the packaging bag, and when the hook is hooked on an exhibition stand or during handling, the cutting is not made. When caught, it will not tear from the edge of the cut.

It is explanatory drawing which showed typically 1st Embodiment of the packaging bag of this invention with the plane. It is explanatory drawing which showed typically 2nd Embodiment of the packaging bag of this invention with the plane. It is explanatory drawing which showed typically 3rd Embodiment of the packaging bag of this invention with the plane. It is explanatory drawing which showed typically an example of the conventional packaging bag by the plane. (A) (B) It is explanatory drawing which showed typically the other example of the conventional packaging bag by the plane. It is explanatory drawing which showed still the other example of the conventional packaging bag typically with the plane.

<First Embodiment>
Hereinafter, a first embodiment for carrying out the present invention will be described.
FIG. 1 is an explanatory view schematically showing a first embodiment of the packaging bag of the present invention in a plan view.

  The packaging bag 100 of 1st Embodiment is a pillow type packaging bag bag-made by the wide top seal part 1, the ground seal part 2, and the back seal part 3, as shown in FIG.

  A suspension hole 4 is provided in the left and right center portion of the wide ceiling seal portion 1, and the suspension hole 4 is provided such that the arc-shaped cut 4 a is on the lower side of the arc-shaped cut. Straight cuts 4b and 4b are provided extending horizontally outward from both ends of the substantially arcuate cut 4a.

<Second Embodiment>
Hereinafter, a second embodiment for carrying out the present invention will be described.
FIG. 2 is an explanatory view schematically showing a second embodiment of the packaging bag of the present invention on a plane.

  The packaging bag 200 of 2nd Embodiment is a pillow type packaging bag bag-made by the wide top seal part 1, the ground seal part 2, and the back seal part 3, as shown in FIG.

  A suspension hole 4 is provided in the left and right central portion of the wide ceiling seal portion 1, and the suspension hole 4 is provided such that the arc-shaped cut 4 a is on both ends of the arc-shaped cut. Linear cuts 4b and 4b extending horizontally outward from both ends of the arc-shaped cut 4a are provided.

<Third Embodiment>
Hereinafter, a third embodiment for carrying out the present invention will be described.
FIG. 3 is an explanatory view schematically showing a third embodiment of the packaging bag of the present invention on a plane.

  The packaging bag 300 of 3rd Embodiment is a pillow type packaging bag bag-made by the wide top seal part 1, the ground seal part 2, and the back seal part 3, as shown in FIG.

  A suspension hole 4 is provided in the left and right center portion of the wide ceiling seal portion 1, and the suspension hole 4 is provided so that the arc-shaped cut 4 a is on the left side of both ends of the arc-shaped cut. In addition, linear cuts 4b and 4b extending horizontally outward from the both ends of the arc-shaped cut 4a are provided.

  It is desirable that the arc-shaped cut 4a of the present invention has an arc (elegance) shape larger than a semicircle. In the first to third embodiments, the header portion is provided as the wide top seal portion 1. However, the header portion may be sealed on four sides, and the portion surrounded by the seal portion may be an unsealed portion. .

  Furthermore, in the first to third embodiments, the pillow type packaging bag is used, but the present invention is not limited to this. A four-side sealed bag in which two films are opposed to each other and four sides are sealed may be used, or a single film may be folded and overlapped to be a three-side sealed bag in which three sides are sealed. Furthermore, a side gusset bag, a bottom gusset bag, or a standing pouch having a bottom portion as a ship bottom seal may be used.

  The manufacturing method of the packaging bag according to the present invention is such that a packaging bag is made by a known bag-making method, and the blade having the shape of the hanging hole 4 is pushed to the left and right central portions of the wide ceiling seal portion 1 on the bag making machine. It is only necessary to provide a cut in the hanging hole 4.

  For example, in the case of the pillow-type packaging bags of the first to third embodiments, the sealing surfaces of one film are turned over to face each other, the back seal portion 3 is sealed, and the wide top seal portion 1 is sealed. After sealing, the blade having the shape of the hanging hole 4 is pressed against the left and right central portions of the wide ceiling seal portion 1 to provide the hanging hole 4 by cutting.

  The film used for the packaging bag of the present invention may be a single layer film or a multilayer film composed of a base film and a sealant layer. For example, as a single layer film, a single-sided heat-sealable biaxially stretched polypropylene film or the like can be used.

  As the base film in the case of a multilayer film, a biaxially stretched resin such as nylon, polyethylene terephthalate, or polypropylene, or a uniaxially stretched or unstretched film can be preferably used. In this case, the thickness is about 12 to 50 μm.

  The base film itself may be provided in multiple layers. As the multilayer base film, outer base film / inner base film, polyethylene terephthalate film / nylon film, nylon film / polyethylene terephthalate film, nylon film / inorganic oxide deposition polyethylene terephthalate film, nylon film / aluminum deposition A laminated multilayer film such as polyethylene terephthalate film, nylon film / aluminum foil, polyethylene terephthalate film / aluminum foil, or the like can be used.

  A heat-meltable resin is used for the sealant layer. Polypropylene, low-density polyethylene, linear low-density polyethylene, acid-modified polyethylene, or the like is used for the unstretched film. A multilayer coextruded film may be used for the sealant layer. As the sealant layer of the multilayer coextruded film, a low-density polyethylene or high-density polyethylene as an intermediate layer and a linear low-density polyethylene layer on both sides are used.

  The thickness of the sealant layer is adjusted depending on the size and weight of the contents, but a thickness of 30 μm to 100 μm can be preferably used.

  The laminating method such as between the base film and the sealant layer may be performed by a dry laminating method. Alternatively, the sandwich lamination method may be used. Moreover, depending on the case, you may carry out by the extrusion laminating method which extrudes, forming a sealant layer from an extruder, and affixing on a base material.

  Moreover, a pattern printing layer can be provided in the back surface of a base film, and the surface depending on the case. In the case of a multilayer substrate film, a pattern printing layer can be provided between the outer substrate film and the inner substrate film. The printing method for providing the pattern printing layer is not particularly limited, but gravure printing or flexographic printing is usually used.

  Specific examples of the present invention will be described below.

<Example 1>
Prepare a 12 μm biaxially stretched polyethylene terephthalate film with a single-sided corona treatment, apply a urethane anchor coating agent to the corona-treated surface, and apply a low-density polyethylene melted from a T-die on the coated surface to a thickness of 15 μm. Then, 15 μm of aluminum foil was laminated by sandwich lamination.

  Further, low-density polyethylene melted from a T-die was extruded to a thickness of 15 μm on the surface of the laminated aluminum foil, and a low-density polyethylene film 30 μm was laminated by sandwich lamination to obtain a laminated packaging material. .

  This laminated packaging material is made with a pillow packaging machine while packaging the contents of a plurality of stick-shaped confectionery, and both ends of the arc-shaped cut 4a are on the upper side and extend linearly outward from both ends. A pillow-shaped packaging bag according to the second embodiment of FIG. 2 was prepared by pressing the blade in the shape of the hanging hole 4 made of the cuts 4b and 4b to provide the hanging hole 4 by the cut.

  Hereinafter, comparative examples of the present invention will be described.

<Comparative Example 1>
Except that the edge of the arc-shaped cut 4a is on the upper side and the blade having the shape of the hanging hole 4 without the straight cuts 4b and 4b extending outward is pressed to provide the hanging hole 4 by the cut. In the same manner as in Example 1, a pillow type packaging bag of Comparative Example 1 as shown in FIG.

<Evaluation method>
The packaging bags of Example 1 and Comparative Example 1 were tested and evaluated by the following method.

<Tear strength>
A hanging hole 4 comprising linear cuts 4b and 4b extending horizontally outward from both ends of the arc-shaped cut 4a of the first embodiment on one laminated packaging material before pillow packaging. And the one provided with the hanging holes 4 having both ends of the arc-shaped cut 4a of Comparative Example 1 on the upper side and having no linear cuts 4b, 4b extending outward.

  Each of the inner part and the lower part of the notch was sandwiched between chucks of a tensile tester and pulled at a speed of 300 mm / min, and the strength at that time was measured. The results are shown in Table 1.

<Hanging test>
The packaging bags of Example 1 and Comparative Example 1 were hung on the hooks with the hanging holes 4, and a load of 100 N was applied to evaluate whether the bags were torn from the hanging holes 4. The results are shown in Table 1.

＜比較結果＞
実施例１の包装袋は、比較例１の包装袋に比べ、吊下げたとき、吊下げ孔から破れ難くなっている。

<Comparison result>
Compared to the packaging bag of Comparative Example 1, the packaging bag of Example 1 is less likely to be broken from the hanging hole when suspended.

100, 200, 300 ... packaging bag 1 ... top seal portion 2 ... ground seal portion 3 ... back seal portion 4 ... hanging hole 4a ... arc-shaped cuts 4b, 4b ..Linear cut 4c ... semi-circular cut

Claims (4)

  A packaging bag provided with a hanging hole near the upper end, wherein the hanging hole has a substantially arc-shaped cut and two linear shapes extending horizontally outward from both ends of the substantially arc-shaped cut. A packaging bag characterized by being provided with a cut.   The packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided on the lower side of the substantially arc-shaped cut.   The packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided on the upper side of the substantially arc-shaped cut.   The packaging bag according to claim 1, wherein both ends of the substantially arc-shaped cut are provided so as to be on the lateral sides of the substantially arc-shaped cut.

Images