JP2003175970A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a tear line from being broken by a positioning abutment plate when the miter-like joined portion of a packaging container is folded to a main body side and to open the packaging container along all its sides, thereby making it possible to take out the contents. <P>SOLUTION: Two incisions 7 are interspatially made in an edge of the miter- like joined portion 3. Also, an incision 8 in the shape of a trapezoid is made in the main body 2b, near a folding crease 4 that corresponds to the two incisions 7, so as not to go to the rear. Both ends 8a of the incision 8 are extended to the miter-like joined portion, which includes the folding crease 4, so as to continue to or cross lines 7a extended from the two incisions 7. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container that allows the contents to be easily taken out by opening it along the entire circumference.

[0002]

2. Description of the Related Art A packaging container of this type is formed by forming a rectangular laminated film packaging material into a tubular shape by aligning the side edges in the longitudinal direction with a palm shape, and joining the palm-sealing portions to form a palm-sealing adhesive portion. Fold back to the main body side to join the cylindrical one end opening to form a sealing part, press-fill the paste food such as yokan from the other end opening, and then join the other end opening to form the sealing part. By forming it, it is formed into a box shape.

A packaging container for press-filling a paste-like food such as yokan is formed by a laminated film packaging material having moisture-proof and hermetic properties, and the strength of the joint-sealed portion is set to be strong. It is designed so that it cannot be opened easily.

In order to take out the contents filled in the packaging container, the user must cut and open a part of the joint-bonded portion of the packaging container with a blade such as scissors, and it is troublesome to take out the contents. There was a problem that was.

Therefore, in order to solve the above-mentioned problems, two cuts are provided in the joint of the packing of the packaging container, and a cut line is provided on the main body side close to the folding line on the extension line of the two cuts to form the chisel. A packaging container has been developed that can be easily torn open from the bond.

In a packaging container formed by joining laminated film packaging materials in a chisel shape to form a tubular body, and joining openings at both ends of the tubular body to form a box shape, While making two notches at intervals on the edge,
A break line extending parallel to the folding line is provided on the main body side near the folding line corresponding to the two cutting lines, and the knob part formed by the two cutting lines can be opened along the entire circumference to take out the contents. The packaging container to be used is described in, for example, Japanese Patent Application Laid-Open No. 9-104449.

[0007]

In the packaging container of the above-mentioned type, since the breaking line is provided on the body side near the folding line and in parallel to the folding line, the entire circumference is defined by the knob portion formed by the two notches. Although it can be unsealed along the line, when the positioning pad is applied along the folding line of the joint, and the joint is folded back to the main body,
There is a problem in that a broken straight line formed on the main body side may be broken by the positioning abutting plate, resulting in a defective product.

The present invention has been made in view of the above-mentioned points, and when the joint-bonded portion of the packaging container is folded back toward the main body, the breaking line is not broken by the positioning pad, and the packaging container is opened along the entire circumference. It is an object of the present invention to provide a packaging container that enables the contents to be taken out by using the packaging container.

[0009]

The packaging container of the present invention comprises a rectangular laminated film packaging material which is formed into a tubular shape by aligning the side edges in the longitudinal direction in the shape of a palm, and the palm-sealing portions are joined to form a joint-sealing portion, In a packaging container that is formed into a box shape by folding back the palm-sealing adhesive portion to the main body side through the folding line and joining the cylindrical end openings to each other, two cuts are made at the edges of the palm-sealing adhesive portion. In addition to providing a cut line provided on the main body side near the fold line corresponding to the two cuts, the cut line does not penetrate to the arc-shaped back surface, and both ends of the arc-shaped cut line are connected or intersected with the extension lines of the two cuts. By extending to the side of the joint bonding part that includes the fold-back line, the folding line will not be broken by the positioning pad when folding the joint-sealing part of the packaging container to the main body side, so it is possible to eliminate the occurrence of defective products. .

In the packaging container of the present invention, a rectangular laminated film packaging material is formed into a tubular shape by aligning the ends in the longitudinal direction with a palm-like shape, and the palm-sealing portions are joined to form a palm-sealing adhesive portion. In a packaging container that is folded back to the main body side through a box and is formed into a box shape by joining the openings at both ends of the tubular shape, two notches are provided at intervals at the edge of the joint-bonding portion, and two A cutout line that does not penetrate to the back surface of the trapezoid is provided on the main body side close to the fold line corresponding to the cut line, and both ends of the cut line are connected to the extension lines of the two cut lines, and the jointing portion including the fold line is included. By extending it to the side, when the folding joint of the packaging container is folded back to the main body side, the rupture line is not broken by the positioning pad, so that defective products can be eliminated.

Further, in the packaging container of the present invention, the laminated film packaging material has a structure having a uniaxially stretched polypropylene film adjacent to a polyethylene film which is a heat-adhesive layer, and cuts in the uniaxially stretched direction of the uniaxially stretched polypropylene film. In the same direction as above, the knob portion formed by the two notches can be opened with the same width over the entire circumference.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an example in which the packaging container according to the present invention is applied to a box-shaped packaging container for containing food such as yokan.

As shown in FIG. 1 and FIG. 2, the box-shaped packaging container 1 has a tubular shape in which a plastic laminate film packaging material 2 cut into a rectangular shape is joined with the longitudinal side ends 2a and 2a in a palm shape. The palm-sealing portions are joined to each other to form the palm-sealing adhesive portion 3, the palm-sealing adhesive portion is folded back to the main body side 2b through the folding line 4, and the tubular end openings are joined to form the sealing portions 5 and 6. By doing so, it is formed into a box shape.

As shown in FIGS. 2 and 3, the packaging container 1 has a width of about 1 which corresponds to the knob width at the edge of the palm-bonding portion 3.
It has two notches 7 and 7 spaced apart by 0 mm.
These two notches 7 and 7 extend from the end edge of the palm-sealed adhesive portion 3 in the direction of the folding line 4 by about ½ of the abutting length of the palm-sealed adhesive portion 3. The portion cut off by the two notches 7, 7 of the palm-sealed adhesive portion 3 forms the knob portion 10. In addition, a trapezoidal cut line 8 is formed on the main body side 2b close to the folding line 4 corresponding to the two cuts 7, 7.

The trapezoidal cut line 8 is formed by perforations in which cuts of 1 mm and continuous portions of 0.5 mm are alternately provided. The perforation depth is a depth that does not reach from the front surface layer to the back surface layer.

Both inclined end portions 8 of the trapezoidal score line 8
a and 8a are virtual extension lines 7 extending from the main body side 2a beyond the folding line 4 and connected to the notches 7 and 7 provided in the palm-sealing adhesive portion 3.
It extends at a position intersecting with a or 7a or beyond the intersecting position. Both ends 8a, 8a of the trapezoidal score line 8 which are inclined
May end at the position of the folding line 4 from the main body side 2b. In this case, the slanted both ends 8a, 8a of the trapezoidal cut line 8 are formed in the cuts 7, 7 provided in the palm-bonding section 3. The position is set so as to be in contact with the continuous virtual extension lines 7a, 7a. The trapezoidal score line 8 may be an arcuate score line or a triangular shape.

That is, the body side 2b close to the folding line 4
The cut line provided in the above may have a shape that does not break when the palm-adhesive bonding portion is folded back to the main body side by a positioning pad (not shown).

As shown in FIG. 4, the arcuate cut line 9 is formed by perforations in which cuts of 1 mm and continuous portions of 0.5 mm are alternately provided, like the trapezoidal cut line 8. The perforation depth is a depth that does not reach from the front surface layer to the back surface layer.

Both ends 9a, 9a of the arcuate cut line 9
From the main body side 2b beyond the fold line 4 and the palm joint 3
Virtual extension lines 7a, 7a connected to the notches 7, 7 provided in the
It extends at the intersection or beyond the intersection. Both ends 9a, 9a of the arcuate cut line 9 may end at the position of the folded line 4 from the main body side 2b. The cuts 7, 7 are provided in 3 and are in contact with the virtual extension lines 7a, 7a continuous with the cuts 7, 7.

As the plastic laminate film packaging material 2, for example, a laminated film of a vapor-deposited biaxially stretched polyester film having a thickness of 12 μm, a uniaxially stretched polyethylene film having a thickness of 18 μm and a low density polyethylene film having a thickness of 20 μm, Or vapor-deposited biaxially oriented polyester film with a thickness of 12 microns and a thickness of 25
Micron uniaxially oriented polypropylene film and thickness 20
Micron low-density polyethylene film laminate film, or 12 micron thick biaxially oriented polyester film and 7 micron thick aluminum foil and 1
Laminate film of 8 micron uniaxially oriented high density polypropylene film and 20 micron thick low density polyethylene film, or 12 micron thick biaxially oriented polyester film and 7 micron thick aluminum foil and 25 micron thick 1 A laminated film of an axially oriented polypropylene film and a low-density polyethylene film having a thickness of 20 μm is selected.

In addition, in the above-mentioned embodiment, the palm-bonding portion 3
Although there are a pair of cuts provided at the end edges of the box, if the box-shaped packaging container 1 has an elongated shape, a pair of cuts may be provided at both ends with the intermediate portion sandwiched therebetween.

Next, as the film packaging material 2 for explaining the method of forming the box-shaped packaging container 1, a three-layer laminated film of vapor-deposited biaxially stretched polyester film, uniaxially stretched polyethylene film and low density polyethylene film is selected,
The film packaging material 2 is cut into a rectangular shape corresponding to the box-shaped packaging container 1.

Next, the film packaging material 2 cut into a rectangular shape
Corresponding to the two cuts 7 and 7 to be formed in the palm-sealed adhesive portion 3 at a portion closer to the main body side 2a than the folding line 4 of the palm-sealed adhesive portion 3 to be formed. , For example, with vapor-deposited biaxially oriented polyester film 1
A trapezoidal score line 8 having a depth that penetrates the axially stretched polyethylene film is formed. This trapezoidal score line 8 may be an arcuate score line 9.

The trapezoidal score line 8 has two ends 8a,
8a extends from the main body side 2b beyond the fold line 4 and a virtual extension line 7 continuous with the notches 7 and 7 provided in the joint attachment 3
It is designed to extend to a position intersecting with a or 7a or a position beyond the intersecting position.

Next, with the low-density polyethylene film inside the film packaging material 2, as shown in FIG. 2, the longitudinal side ends 2a, 2a are formed into a cylindrical shape so as to form a cylindrical shape. The films are joined to each other by heat welding to form the gas-sealed adhesive portion 3.

Next, the main body side 2
Two notches 7 and 7 are formed corresponding to the trapezoidal notch line 8 provided in a. The length of the two notches 7 and 7 is about ½ of the abutting length of the gassho-bonded portion 3. In this case, the two notches 7 and 7 are such that the virtual extension lines 7a and 7a extending from the two notches 7 and 7 intersect the ends 8a and 8a of the trapezoidal notch line 8 or exceed the intersecting position. Position.

Next, a positioning patch plate (not shown) is applied along the folding line 4, the joint-bonded portion 3 is folded back to the main body side 2b through the folding line 4, and one opening of the tubular body is made into a low-density polyethylene film. The sealing parts 5 are formed by joining the parts together by heat welding. In this case, when the positioning pad is set so as not to hit the straight line portion of the trapezoidal cut line 8 parallel to the folding line 4, when the palm-adhesive part 3 is folded back to the main body side 2b through the folding line 4, The trapezoidal cut line 8 is not broken by the positioning pad.

Then, a food product such as yokan is pressed into the box-shaped packaging container through the open end. Then, the sealing portion 6 is formed by joining the openings of the box-shaped packaging container to each other by heat welding the low density polyethylene films to each other. As a result, the box-shaped packaging container 2 containing food such as yokan is formed.

Therefore, in order to break the box-shaped packaging container 2 and take out the stored contents, the folded palm-bonding portion 3 of the box-shaped packaging container 2 is raised from the main body side 2b at a predetermined angle, and the raised palm is folded. Hold the portion between the two notches 7 of the adhesive portion 3 and pull in the direction away from the box-shaped packaging container 2. As a result, the gassho-bonded portion 3 has two notches 7,
The tear knob portion 10 is formed by using 7 as the opening start point.

When the knob portion 10 is further pulled, the palm-adhesive portion 3 has a virtual extension line 7 following the two notches 7 and 7.
It is torn along a and 7a. Both ends 8 of the trapezoidal cut line 8 in which the tip of the broken line extends to the joint-bonded portion 3
When it reaches a, 8a, the broken line is at both ends 8a, 8a.
Through the folding line 4 to reach the straight line portion of the trapezoidal cut line 8 located on the main body side 2b and break the straight line portion of the trapezoidal cut line 8. As a result, the knob portion 10 has the main body side 2b.
Is disconnected from the part connected to.

When the knob portion 10 is further pulled, the knob portion 10 opens the main body side 2b along its entire circumference with its width as shown in FIG. 5, and the box-shaped packaging container 2 has its longitudinal intermediate portion. Is broken into a ring shape, whereby the contents contained in the box-shaped packaging container 2 can be taken out.

[0032]

As described above, according to the present invention, since the positioning contact plate does not break the rupture line when the joint-bonded portion of the packaging container is folded back to the main body side, defective products are eliminated. be able to.

Further, in the packaging container of the present invention, the laminate film packaging material has a uniaxially stretched polypropylene film adjacent to the polyethylene film which is the heat-adhesive layer, and is cut in the uniaxially stretched direction of the uniaxially stretched polypropylene film. By setting the same direction as the above, the knob portion formed by the two cuts can be opened with the same width along the entire circumference.

[Brief description of drawings]

FIG. 1 is a perspective view of a packaging container according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing an intermediate stage of molding of the packaging container according to the present invention.

FIG. 3 is a view showing an example of a score line formed on the main body side of the packaging container according to the present invention.

FIG. 4 is a view showing another example of a score line formed on the main body side of the packaging container according to the present invention.

FIG. 5 is a view showing an opened state of the packaging container according to the present invention.

[Explanation of symbols]

1 packaging container 2 Laminated film packaging material 3 Gassho adhesive section 4 Folded line 7 notches 8 break line

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Wu Jiang             5-11, Nibancho, Chiyoda-ku, Tokyo             Hosokawa Yoko (72) Inventor Masahiro Ito             5-11, Nibancho, Chiyoda-ku, Tokyo             Hosokawa Yoko F-term (reference) 3E064 AA08 BA17 BA26 BA30 BA54                       BB03 BC07 BC16 BC18 EA07                       EA30 FA05 HN06 HP01 HP02                 3E067 AA24 AB16 AC01 BA22A                       BB12A BB14A BB15A BB16A                       BB18A BB25A BC06A CA24                       EA01 EA15 EA31 EB07 EB22                       FA01 FB07 FC01 GD07                 3E086 AA22 AB01 AC12 AC13 AC15                       AC31 AD08 BA04 BA13 BA15                       BA33 BB51 CA01

Claims (5)

[Claims] 1. A rectangular laminated film packaging material is formed into a tubular shape by aligning the side ends in the longitudinal direction with a palm-like shape, and the palm-sealing portions are joined to form a palm-sealing adhesive portion. In a packaging container that is folded back to form a box-like shape by joining the openings at both ends of the tubular shape, and forming two notches at intervals at the end edges of the joint-bonding portion,
An arc-shaped cut line that does not penetrate to the back side is provided on the main body side near the fold line corresponding to the cut line, and both ends of the arc-shaped cut line are connected to or intersect with the extension lines of the two cut lines. A packaging container characterized by being extended to the adhesive portion side. 2. A rectangular laminate film packaging material is formed into a tubular shape by aligning the side edges in the longitudinal direction with a palm shape, and the palm-sealing portions are joined to form a palm-sealing adhesive portion. In a packaging container that is folded back to form a box-like shape by joining the openings at both ends of the tubular shape, and forming two notches at intervals at the end edges of the joint-bonding portion,
A trapezoidal cut line that does not penetrate to the back side is provided on the main body side near the fold line corresponding to the cut line of the book, and both ends of the trapezoid cut line are connected to or intersect with the extension lines of the two cut lines. A packaging container characterized by being extended to the adhesive portion side. 3. A plastic laminate film packaging material,
The packaging container according to claim 1 or 2, which has a three-layer structure of a biaxially stretched polyester film, a uniaxially stretched high-density polyethylene film, and a polyethylene film. 4. A plastic laminate film packaging material,
The packaging container according to claim 1 or 2, which has a three-layer structure of a biaxially stretched polyester film, a uniaxially stretched polypropylene film and a polyethylene film. 5. A plastic laminate film packaging material,
The packaging container according to claim 1 or 2, which has a four-layer structure of a biaxially stretched polyester film, an aluminum foil, a uniaxially stretched polypropylene film, and a polyethylene film.