JP2006212861A - Manufacturing method of plastic packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a novel manufacturing method of a plastic packaging container. <P>SOLUTION: The novel manufacturing method of the plastic packaging container 10 is constituted so as to fabricate a plastic sheet 20 by a lap-round caser. Especially, in a plastic sheet 20, folding rules 30 are equipped with intermittently formed main rules through residual wall parts provided along folding lines at a predetermined interval and the residual wall parts are formed into a curved surface forming shape while auxiliary rules provided in the direction inclined with respect to the main rules at a predetermined angle are provided to the residual wall parts. By this constitution, the plastic sheet is easily folded, suppressed from the damage from the folding rules and suitable for the fabrication due to the lap-round caser. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a novel method for producing a plastic packaging container.

A plastic packaging container as disclosed in Patent Document 1 is generally known. What is disclosed in Patent Document 1 includes a bottom plate portion, a side plate portion, and a lid portion that are connected via a bent ruled line, and a stored item fixed hole that is formed with a hole for fixing a stored item that is accommodated inside the lid portion. It is equipped with a flap for use.
JP 2001-139019 A

  Patent Document 1 discloses that a plastic sheet is bent, a part of a side plate portion is overlapped and sealed with an adhesive to form a box shape, and then a stored item fixing flap is placed inside after storing the stored item. The stored item is fixed by being folded into a lid and closed. That is, in Patent Document 1, a plastic sheet is formed in a box shape, and then a stored item as a product is stored, and is assembled by a packaging machine called a carting machine.

  In general, a packaging container using corrugated paper or cardboard is often manufactured by a wrap round caser that can simultaneously pack products while assembling into a box shape. When a wrap round caser is used, it has the advantage that it can be assembled at a lower cost than a cartoning machine. However, a plastic sheet may be difficult to bend as compared with a paper sheet. It is assembled using a cartoning machine and is not manufactured by a wrap round caser.

  This invention is made | formed in view of the above, and makes it a subject to provide the novel manufacturing method of a plastic packaging container.

In order to solve the above-mentioned problems, in the present invention according to claim 1, there is provided a method for producing a plastic packaging container, wherein a plastic sheet provided with a bent ruled line is assembled into a box shape using a wrap round caser. provide.
In this invention of Claim 2, as the said plastic sheet, the said bending ruled line is provided with the main ruled line formed intermittently through the remaining part provided in predetermined intervals along the bending line, The said remaining part Is formed in a shape having a curved surface, and the remaining portion is provided with an auxiliary ruled line engraved in a direction inclined at a predetermined angle with respect to the main ruled line. It aims at providing the manufacturing method of the plastic packaging container of claim | item 1.
In the present invention according to claim 3, the plastic sheet according to claim 1 or 2, wherein the plastic sheet is provided with a tearing ruled line for opening used at the time of opening after assembly at a predetermined position. It is an object of the present invention to provide a method for manufacturing a packaging container.

  The method for producing a plastic packaging container of the present invention is a structure in which a plastic sheet is assembled by a wrap round caser, and can provide a novel method for producing a plastic packaging container. In particular, as a plastic sheet, a folded ruled line is formed with a main ruled line formed intermittently through a remaining part provided at predetermined intervals along the folding line, and the remaining part is formed in a shape forming a curved surface. In addition, if the remaining portion is provided with an auxiliary ruled line engraved in a direction inclined at a predetermined angle with respect to the main ruled line, it is easy to bend and the breakage from the bent ruled line is suppressed. Suitable for assembly by wrap round casers.

  Next, the present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view illustrating an example of a plastic packaging container 10 manufactured according to the present embodiment, and FIG. 2 is a diagram illustrating an example of a plastic sheet 20 in an unfolded state before the plastic packaging container 10 is assembled. It is.

  As shown in these drawings, the plastic packaging container 10 of the present embodiment includes a front plate portion 11, a back plate portion 12, two side plate portions 13, 14, a bottom plate portion 15, and a lid portion 16. The The plastic sheet 20 to be the plastic packaging container 10 is formed by punching a sheet material made of A-PET (amorphous polyethylene terephthalate), PP (polypropylene) or the like into a predetermined shape by a punching machine. The thickness of the plastic sheet 20 is not limited, but is selected in the range of about 0.1 to 1 mm, preferably about 0.2 to 0.5 mm. Moreover, although what was colored may be given, in order to make confirmation of a contained thing easy, it is preferable to set it as a transparent or translucent thing.

  As shown in FIG. 2, the punched plastic sheet 20 has a pair of side plates that face each other when bent into a three-dimensional shape on the left and right sides along the longitudinal direction of the rectangular front plate portion 11. Further, a back plate portion 12 is provided adjacent to one side plate portion 13 so as to be opposed to the front plate portion 11 when bent into a three-dimensional shape. Further, adjacent to the top and bottom of the front plate portion 11, a bottom plate portion 15 and a lid portion 16 that are opposed to each other when three-dimensionalized are formed. Further, folding flaps 13 a, 14 a, 15 a, 16 a are connected to the upper and lower sides of the side plate portions 13, 14, the lower portion of the bottom plate portion 15, and the upper portion of the lid portion 16, respectively. A joint portion 14b that is bent and bonded to the back plate portion 12 is continuously provided at the end edge. In the present embodiment, the outer surfaces of the flaps 13a and 14a of the side plate portions 13 and 14 are joined to the inner surface of the bottom plate portion 15 or the lid portion 16 by bonding when the three-dimensionally bent portions are bent. .

  Here, the boundary between the front plate portion 11 and the one side plate portion 13, the boundary between the front plate portion 11 and the other side plate portion 14, the boundary between the front plate portion 11 and the bottom plate portion 15, the front plate portion 11 and the lid portion. 16, a boundary between one side plate portion 13 and the back plate portion 12, a boundary between each side plate portion 13, 14 and the corresponding flaps 13 a, 14 a, a boundary between the bottom plate portion 15 and the flap 15 a, a lid Folding ruled lines 30 are formed at the boundary between the portion 16 and the flap 16a and at the boundary between the other side plate portion 14 and the joint portion 14b. The bent ruled line 30 is engraved using a ruled line blade formed in a predetermined blade shape.

  The folding ruled line 30 can be formed by various conventionally known means. For example, the bent ruled line 30 can be formed by continuously forming irregularities along the above boundaries, or can be formed by intermittent holes, or disclosed in JP-A-2001-62909. As disclosed, a set of a curved blade and two adjacent curved concave surfaces as a set, and a set of curved concave surfaces are formed at predetermined intervals in the direction of the blade edge of the vertical blade, and each set of adjacent curved concave surfaces. What formed using the ruled line blade which formed the horizontal blade orthogonal to a vertical blade between curved concave surfaces can be used. By forming with the ruled line blade disclosed in Japanese Patent Application Laid-Open No. 2001-62909, there is an advantage that it is easy to bend but is not easily damaged, and light scattering is reduced to make it less noticeable in appearance.

  In particular, it is more preferable that the bent ruled line 30 is formed by the ruled line blade disclosed in Japanese Patent No. 3532183. What is disclosed in Japanese Patent No. 3532183 is not provided with a horizontal blade in a direction perpendicular to the vertical blade as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2001-62909, but at an arbitrary angle with respect to the vertical blade. The slanting blade inclined at is formed between two adjacent curved concave surfaces. When this ruled line blade is used, the bent ruled line 30 will be provided with the main ruled line formed intermittently by the vertical blades, and the remaining part between the main ruled lines will have a curved surface due to the curved concave surface of the ruled line blade. Further, an auxiliary ruled line engraved in a direction inclined by a predetermined angle with respect to the main ruled line is formed by the oblique blade. As a result, using the technique disclosed in Japanese Patent No. 3532183, the balance of ease of bending, elasticity, and resistance to breakage can be further increased, and it is easily folded by a wrap round caser and assembled into a box shape. be able to.

  As shown in FIGS. 1 and 2, the front plate portion 11 is provided with tearing ruled lines 40 and 41 for opening along the width direction at predetermined intervals, and each side plate portion 13, 14, it is preferable to provide cut ruled lines 42 and 43 that are inclined upward from the front plate portion 11 side toward the rear plate portion 12. As a result, a portion sandwiched between the two cut ruled lines 40 and 41 formed on the front plate portion 11 becomes an opening band 45, and the opening band 45 is cut so as to be pulled forward from one end to the other end. With the lid 16 closed, the upper part is opened upward with the opening band 45 and the cut ruled lines 42 and 43 formed on the side plate parts 13 and 14 as a boundary, and the packaged product is taken out. Can do. In the present embodiment, as described above, since the flaps 13a and 14a are bonded to the bottom plate portion 15 and the lid portion 16 and the joint portion 14b is bonded to the back plate portion 12, the plastic packaging in which the plastic sheet 20 is three-dimensionalized. The container 10 is a sealed type. Accordingly, when opening, the opening band 45 is used.

  According to the present embodiment, as described above, the folding ruled line 30 is easy to bend but is not easily damaged. Therefore, the folding ruled line 30 is conventionally assembled using a wrap round caser that has not been used to assemble plastic packaging containers. be able to. For this reason, it can convey to the packaging factory which has a wrap round caser and goods with the punched state plastic sheet, and the bulk at the time of conveyance can also be reduced. Note that the above-described embodiment is merely an example of a plastic packaging container, and the shape, the position of the folding ruled line, and the like are not limited at all.

FIG. 1 is an external perspective view of a plastic packaging container according to an embodiment of the present invention. FIG. 2 is a plan view showing a plastic sheet punched into a predetermined shape used for assembling the plastic packaging container according to the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plastic packaging container 11 Front plate part 12 Back plate part 13 One side plate part 14 The other side plate part 15 Bottom plate part 16 Lid part 20 Plastic sheet 30 Bending ruled line

Claims (3)

  A method for producing a plastic packaging container, comprising assembling a plastic sheet having a bent ruled line into a box shape using a wrap round caser.   As the plastic sheet, the folding ruled line is formed with a main ruled line formed intermittently through a remaining part provided at predetermined intervals along the bending line, and the remaining part is formed in a shape forming a curved surface. 2. The plastic packaging container according to claim 1, wherein the remaining portion is provided with an auxiliary ruled line engraved in a direction inclined at a predetermined angle with respect to the main ruled line. Production method.   The method for producing a plastic packaging container according to claim 1 or 2, wherein the plastic sheet is a sheet provided with a cut ruled line for opening used when opening after assembly.

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