JP2011126577A - Packaging bag of straw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag which allows a U-shaped straw to be easily taken out of the packaging bag of the U-shaped straw attached to a paper container. <P>SOLUTION: The U-shaped straw 8 is fixed to the paper container. The U-shaped straw 8 is formed of a tip side part 8a, a mouthpiece side part 8b, and a bellows part 8c arranged between them, and is stored in the packaging bag 9 by curving the bellows part 8c into a U shape. The four sides of the packaging bag 9 are sealed by an inner resin film and an outer resin film. The outer resin film is formed of an inner face layer and an outer face layer that are made of a thermoplastic resin. The inner face layer is OPP and the outer face layer is CPP. The inner resin film of the packaging bag 9 is formed into a flat shape and the outer resin film is formed into a U-shaped section to cover the U-shaped straw 8. An easily breakable part S with perforations S1 is formed in the vicinity of the bellows part 8c in a shorter direction at the inner face layer of the outer resin film. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a packaging bag of a U-shaped straw attached to a paper container filled with liquid food, and relates to a packaging bag from which the U-shaped straw can be easily taken out. .

2. Description of the Related Art Conventionally, various configurations are known regarding the structure of a packaging bag for a straw of a paper container for liquid food. For example, in Patent Document 1, as shown in FIG. 7, a double tube for drinking the content liquid 53 is filled with a content liquid 53 such as milk or juice in a paper container 52 in which a packaging material 51 is formed in a rectangular parallelepiped appearance. The type straw 54 is adhered to the side surface 52a of the paper container 52 in a state of being accommodated in the packaging bag 55 composed of the front and back layers 55a and 55b.

When using the double-pipe straw 54, the double-pipe straw 54 is pushed diagonally downward by pushing the suction port 54a of the double-pipe straw 54 from the outside of the packaging bag 55 with the fingertip as shown by the arrow Y1. The double tube type straw 54 can be taken out by tearing the packaging bag 55 at the tip 54b as shown by the arrow Y2. Then, the tip portion 54 b can be pierced into a straw hole 56 formed in the top surface 52 b of the paper container 52, and the content liquid 53 can be drunk.

JP 2007-167087 A

When a U-shaped straw 57 is used instead of the double-pipe type straw 54, as shown in FIG. 8, the bellows portion 57b provided in the middle region of the straw body 57a is folded into a U-shape in the packaging bag 58. Stored. Here, in order to easily form the bellows portion 57b, the U-shaped straw 57 is made of a soft thermoplastic resin material. For this reason, when the U-shaped straw 57 is taken out from the packaging bag 58, even if the bellows portion 57b is pushed in from the outside of the packaging bag 58 as indicated by the arrow Y3, the tip portion 57c is soft, so that the packaging bag is indicated by the arrow Y4 It is not easy to break through 58.

  The present invention addresses the above-described needs and desires, and an object of the present invention is to provide a packaging bag in which a U-shaped straw can be easily taken out from a packaging bag provided in a paper container.

The invention of claim 1 is a U-shaped straw packaging bag fixed to a paper container having a straw hole, the U-shaped straw comprising a tip side portion, a suction side portion, and a bellows portion provided in the middle thereof. The bellows portion is bent in a U shape, and the distal end side portion and the suction side portion are stored in the packaging bag in a parallel state. The packaging bag is formed by sealing the outer resin film and the inner resin film four times in the longitudinal direction and the short direction, and an easily breakable portion is formed in the short direction in the vicinity of the bellows portion of the outer resin film. It is characterized by

A second aspect of the present invention is the packaging bag according to the first aspect, wherein the easily breakable portion is formed by a perforation.

Invention of Claim 3 is a packaging bag of Claim 1 or Claim 2, Comprising: The said outer side resin film consists of an outer surface layer and an inner surface layer, The said easily breakable part is formed in this inner surface layer. It is a feature.

A fourth aspect of the present invention is the packaging bag according to the third aspect, wherein the outer surface layer is formed of CPP resin and the inner surface layer is formed of OPP resin.

A fifth aspect of the present invention is the packaging bag according to any one of the first to fourth aspects, in which the paper container is filled with the content liquid by forming a belt-like packaging material into a cylindrical shape with a vertical line seal. The rectangular top surface is formed by sealing and cutting with a pair of horizontal line seals to continuously form an original container, and bending both ends of the pair of horizontal line seals of the original container through a crease line provided in the band-shaped packaging material. It is characterized by forming the bottom surface and the four side surfaces at the same time.

According to the invention of claim 1, the U-shaped straw includes a tip side portion, a suction side portion, and a bellows portion provided in the middle thereof, and the bellows portion is curved in a U shape to The inlet side is stored in the packaging bag in a parallel state. The packaging bag is formed by sealing the outer resin film and the inner resin film four times in the longitudinal direction and the short direction, and an easily breakable portion is formed in the short direction near the bellows portion of the outer resin film. For this reason, the outer resin film can be easily broken in the lateral direction by the easily breakable portion, and the U-shaped straw can be easily and reliably removed from the packaging bag with the bellows portion. Is excellent in reliability and function. And the front end side part of a U-shaped straw is inserted in the straw hole of the said paper container, a suction port side part is bent to a desired angle by a bellows part, and a content liquid can be attracted | sucked reliably.

  According to the second aspect of the present invention, since the easily breakable portion has a simple perforation structure, it is easy to form and the breakage effect can be obtained with certainty.

  According to invention of Claim 3, the said outer side resin film consists of an outer surface layer and an inner surface layer, and the said easily breakable part is formed in this inner surface layer. For this reason, since the area | region in which the perforation was formed is covered with an outer surface layer, the quality and hygiene of a U-shaped straw can be maintained until the said easily breakable part is fractured, and the commercial value of a paper container can be maintained.

According to the fourth aspect of the present invention, the perforation process is formed in the OPP resin, which is an easily tearable resin of the inner surface layer, and the CPP resin having a high tear strength is covered as the outer surface layer. Thus, the same effects as those of the third aspect can be reliably obtained without impairing the strength of the perforation.

According to the invention of claim 5, the belt-shaped packaging material is formed into a cylindrical shape with a vertical line seal, filled with the content liquid, sealed and cut with a pair of horizontal line seals to continuously form an original container, Claiming the packaging bag of the paper container formed by folding both ends of the pair of horizontal line seals of the original container through a crease line provided in the material to form a rectangular top surface and bottom surface and simultaneously forming four side surfaces. The effect similar to the terms 1-4 is acquired.

It is a perspective view which shows the state which the packaging bag 9 which accommodated the U-shaped straw 8 on the back surface 5 of the paper container main body 1a whose external appearance is a rectangular parallelepiped shape provided with the easily breakable part S in embodiment of this invention. It is a top view which shows the state in which the packaging bag 9 which includes the U-shaped straw 8 in the embodiment of this invention is formed continuously. It is a figure which shows the state by which the easily broken part S was formed in the packaging bag 9 in which the U-shaped straw 8 was accommodated in AA sectional drawing of FIG. 2 in embodiment of this invention. It is a top view which shows arrangement | positioning of the folding lines 15, 16, 17 and the straw hole H which were formed in the packaging material 14 which bends and forms the paper container main body 1a in embodiment of this invention. FIG. 5 is a cross-sectional view showing the configuration of the packaging material 14 and the straw hole H in the BB cross-sectional view of FIG. 4 in the embodiment of the present invention. In embodiment of this invention, (a) is a front view which shows the fracture | rupture state of the easily breakable part S of the packaging bag 9 which accommodated the U-shaped straw 8, (b) is the packaging bag 9 for the U-shaped straw 8 in FIG. It is a side view which shows the state of the packaging bag 9 at the time of taking out from. It is a perspective view which shows the state which takes out the double tube | pipe type straw 54 from the packaging bag 55 in order to drink the content liquid 53 of the paper container 52 in a prior art example. It is a perspective view which shows the state which tries to take out the U-shaped straw 57 from the packaging bag 58 in a prior art example.

<Configuration of U-shaped straw packaging bag>
As shown in FIGS. 1, 2, and 3, the paper container main body 1 a of the paper container 1 is formed into a rectangular parallelepiped appearance with a bottom surface 3, a front surface 4, a back surface 5, and two side surfaces 6 and 7, and the content liquid Q is filled therein. The A packaging bag 9 containing a U-shaped straw 8 is fixed on the diagonal line of the back surface 5.

The U-shaped straw 8 has a diameter D≈4 mm and is made of a flexible thermoplastic resin material. The U-shaped straw 8 is composed of a tip side portion 8a, a suction side portion 8b, and a bellows portion 8c provided in the middle thereof. And the distal end side portion 8a and the suction side portion 8b are accommodated in the packaging bag 9 in a substantially parallel state. The packaging bag 9 is attached in a direction in which the bellows portion 8 c of the U-shaped straw 8 is on the top surface 2 side of the paper container 1.

The tip 8d is inclined by about 45 degrees so that the straw hole H formed on the top surface 2 having a diameter ≈ 6 mm can be easily pierced by the tip 8d of the U-shaped straw 8 to suck the liquid Q. ing.

The packaging bag 9 is formed by sealing an inner resin film 10 and an outer resin film 11 made of thermoplastic resin in the longitudinal direction and the transverse direction with sealing portions M, and the packaging bag 9 containing the U-shaped straw 8 is Continuously formed. The inner resin film 10 is OPP (stretched polypropylene) having a thickness of 20 μm, and one side corresponding to the outer resin film 11 is formed by heat sealable. The outer resin film 11 includes an inner surface layer 11a and an outer surface layer 11b, and CPP (unstretched polypropylene) having a thickness of 12 μm is extruded and coated as an outer surface layer 11b on the 20 μm thick OPP of the inner surface layer 11a. When the packaging bag 9 is formed, the heat sealable surface of the inner resin film 10 and the inner surface layer 11a of the outer resin film 11 are thermocompression bonded.

The inner resin film 10 of the packaging bag 9 is planar, and the outer resin film 11 is formed in a U-shaped cross section so as to cover the U-shaped straw 8. And the perforation S1 as the easily breakable part S is formed in the short side direction of the inner surface layer 11a in the vicinity of the bellows part 8c of the outer resin film 11.

The perforation S1 is formed by, for example, pressing a continuous convex emboss (not shown) mechanically at a constant pitch or pressing a heated emboss. Characters / symbols K and the like are drawn on the outer surface layer 11b along the easily breakable portion S so that the drinker can recognize the position of the easily breakable portion S. The packaging bag 9 containing the U-shaped straw 8 is separated by a set with a straw attachment device (not shown) and fixed to each paper container main body 1 a via the inner resin film 10.

As shown in FIGS. 4 and 5, the band-shaped packaging material 14 for molding the paper container main body 1 a is formed with a plurality of folds 15, 16, 17 for easy folding between both ends T 1, T 2, In the region P corresponding to one paper container, the vertical fold 15 (15a, 15b, 15c, 15d), the horizontal fold 16 (16a, 16b, 16c, 16d), and a plurality of diagonal folds 17 ( 17a, 17b) and a straw hole H is formed.

The structure of the wrapping material 14 is composed of an outer layer 14a, a paper base material 14b, an adhesive layer 14c, a barrier layer 14d, and two inner layers 14e in order from the outer side to the inner side. Are printed in advance. The outer layer 14a and the inner layer 14e are formed of a low density polyethylene resin, the adhesive layer 14c is formed of a resin such as polyethylene or an ethylene copolymer, and the barrier layer 14d is formed of an aluminum foil or the like.

In order to make the straw hole H easy to open with the U-shaped straw 8, the paper base material 14b is pierced with a circular hole having a diameter C≈6 mm. Then, the outer layer 14a formed in a concave shape covering the circular hole is welded to the planar adhesive layer 14c.

<Description of manufacturing process of paper container 1>
In a filling machine (not shown), the belt-like packaging material 14 is continuously transported downward, and at the same time, both end portions T1 and T2 are overlapped to form a cylinder with a vertical line seal, and the contents liquid is filled into the cylinder. Next, the region P corresponding to one paper container is separated by horizontal line sealing to form an original container, and the vertical folds 15a, 15b, 15c, 15d, the horizontal folds 16a, 16b, 16c, 16d, and A plurality of fold lines 17a and 17b in an oblique direction are bent to form a paper container body 1a having a rectangular parallelepiped appearance. When the packaging bag 9 containing the U-shaped straw 8 is fixed to the paper container main body 1a by a straw attachment device (not shown), each packaging bag 9 is hot via the inner resin film 10 in at least two places in the longitudinal direction. It is fixed by melt or welding.

<Action of U-shaped straw packaging bag>
As shown in FIGS. 6 (a) and 6 (b), when the U-shaped straw 8 is taken out from the packaging bag 9 during drinking, the toe is inserted into the perforation S1 and the outer resin film 11 is pushed in with the fingertip. The resin film 11 is easily torn at the upper end S2 and the lower end S3 at the perforation S1. Since the easily breakable portion S is formed in the vicinity of the bellows portion 8c of the outer resin film 11, the outer resin film 11c above the torn upper end S2 is short so that it can be easily rolled up, and the outer resin film 11d below the lower end S3 is Since it is sufficiently longer than the upper outer resin film 11c, the U-shaped straw 8 is stably held and does not fall.

The U-shaped straw 8 can be easily taken out upward from the packaging bag 11 while holding the bellows portion 8c with a finger. The U-shaped straw 8 is pierced into the straw hole H and the tip side portion 8a and the suction side portion. The content liquid Q can be ingested by making 8b a desired angle with the bellows part 8c. Since the upper outer resin film 11c and the lower outer resin film 11d are not scattered and remain attached to the paper container body 1a with the U-shaped straw 8 taken out, it is hygienic and environmentally friendly.

In this way, the U-shaped straw 8 formed of a flexible material can be easily taken out from the packaging bag 9, and can be easily carried during sports or indoor / outdoor activities, etc. Because it is possible, it is excellent in convenience.

The embodiment of the present invention has been described with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope of the present invention are included in the present invention. It is.
For example, the perforation S1 of the easily breakable portion S may be formed in a state where a thin thickness remains in the OPP by laser processing or the like without penetrating the OPP. In this case, the coating of the CPP may be omitted. The perforation S1 of the easily breakable portion S may be formed in two rows of predetermined lengths in a staggered pattern with a predetermined width. The perforation S1 which does not penetrate may be formed also in the inner side resin film 10, and the easily breakable part S may be formed in the perimeter of a packaging bag. The inner resin film 10 may be made of polyethylene resin instead of OPP.

DESCRIPTION OF SYMBOLS 1 Paper container 8 U-shaped straw 8a Front end side part 8b Suction side part 8c Bellows part 9 Packaging bag 10 Inner resin film 11 Outer resin film 11a Inner surface layer 11b Outer surface layer S Easy break part S1 Perforation

Claims (5)

A U-shaped straw packaging bag fixed to a paper container having a straw hole,
The U-shaped straw comprises a tip side portion, a suction side portion, and a bellows portion provided in the middle. The bellows portion is curved in a U shape so that the tip side portion and the suction side portion are parallel to each other. Stored in
The packaging bag is formed by sealing the outer resin film and the inner resin film four times in the longitudinal direction and the short direction, and an easily breakable portion is formed in the short direction near the bellows portion of the outer resin film. A U-shaped straw packaging bag. The packaging bag for a U-shaped straw according to claim 1, wherein the easily breakable portion is formed by perforations. The U-shaped straw packaging bag according to claim 1 or 2, wherein the outer resin film includes an outer surface layer and an inner surface layer, and the easily breakable portion is formed on the inner surface layer. 4. The U-shaped straw packaging bag according to claim 3, wherein the outer surface layer is formed of CPP resin and the inner surface layer is formed of OPP resin. A paper container is formed by forming a belt-shaped packaging material into a cylindrical shape with a vertical line seal, filling the content liquid, sealing and cutting with a pair of horizontal line seals to continuously form an original container, and forming a crease line for the belt-shaped packaging material 5. The device according to claim 1, wherein both ends of the pair of horizontal line seals of the prototype container are bent to form a rectangular top surface and a bottom surface, and at the same time, four side surfaces are formed. A U-shaped straw packaging bag according to one item.