JP2001225828A - Molded container and container molding body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an unsealing structure in a packaging container which can be unsealed easily and finely. SOLUTION: An article storing space 32 is provided within the sheet surfaces 2, 3 formed from an amorphous ethylene-terephthalate polyester resin, and a ruled line 19 for unsealing is formed, while a rib 20 is formed near the line 19 in an unsealing direction. By providing the rib 20, a tearing part can be torn off easily and finely along the line 19. Further, if a terminal point of the rib 20 is pressed down by the tip of a finger, the tearing part can be torn off more easily, and moreover the tearing part can be prevented from being cut off sideward, offset from the line 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded container used for packaging goods such as cosmetics and confectionery, and a container forming body for forming the container.

[0002]

2. Description of the Related Art Recently, as a packaging container used for packaging products such as cosmetics, advertisements have been recently made so that the products can be displayed with a good appearance while protecting the products, and that advertisements can be displayed. There is a product in which a transparent dome-shaped product storage space is provided in a sheet body with an advertisement.

In this type of packaging container, a folding line is formed on a plastic sheet, and a recess for forming a product storage space portion is formed in the sheet surface on both sides of the folding line by a thermoforming method or the like. In general, the folding ruled line is used as a fold to form a dome-shaped product storage space in the sheet body by folding the sheet surface portion, and the opening structure includes the folding ruled line. In some cases, the package can be opened by forming an opening ruled line along the line, and pulling and tearing the opening portion between the bent ruled line and the opening ruled line.

[0004] However, such an opening structure requires a large force when opening, and in the process of peeling off the opening portion, the opening portion may be shifted laterally from the opening ruled line. However, there is a problem that it is not easy to open the package, it is not easy to open the package, and the appearance is deteriorated.

Accordingly, the present invention is to provide a molded container having an opening structure which can be easily and cleanly opened in this type of packaging container, and a container forming body for forming such a molded container. It is.

[0006]

According to the present invention, for this purpose, in a molded container having a structure in which a product storage space is provided in a sheet body, an opening rule is formed in the sheet body, and the opening ruled line is formed in the sheet body. A container is formed by forming ribs in the vicinity along the opening direction to form a molded container. Further, in order to form such a molded container, a container forming body having a configuration in which a product storage space forming recess is provided in a sheet body , An opening rule is formed in the sheet body, and a rib is formed in the vicinity of the opening rule along the opening direction to form a container forming body.

Here, the opening ruled line may be formed so as to be easily cut, and has a structure in which cuts or thin portions are formed intermittently on the sheet surface, and grooves are provided on the sheet surface. There is no particular limitation on a two-level ruled line in which a cut or a thin portion is formed intermittently in this groove. Further, even if the opening rule is provided along the folding rule as described above, an opening structure is provided as a tear portion between the folding rule and the opening rule, and the opening is performed irrespective of the folding rule. It is also possible to arrange the ruled lines for juxtaposition at an appropriate interval, and to provide an opening structure with a tear portion between the opening ruled lines.

The ribs formed in the vicinity of the opening ruled line are preferably formed in a series of lines along the opening direction, and may have a concave shape, a convex shape, an uneven shape, or any other shape.
Further, it is preferable that the end of the rib is disposed near the opening start point, and the rib is formed to be longer than the end by about 10 mm or more. Furthermore, the distance from the opening ruled line is 10 mm.
It is preferable to form them in the vicinity not to be separated.

By providing the ribs in the opening direction in the vicinity of the opening rule in this manner, the tear portion can be easily and cleanly opened along the opening rule. Furthermore, if the end side portion of the rib is held down with a finger, not only can tearing of the tearing portion be further facilitated, but also there is no possibility that the rib is shifted from the opening ruled line and cut laterally. Can also.

The molded container and the container forming body of the present invention are preferably formed from an amorphous ethylene terephthalate polyester resin from the viewpoint of strength, rigidity, transparency, bending workability and the like. Here, the term “amorphous” means that a resin is a differential scanning calorimeter (DSC-7, manufactured by PerkinElmer).
This means that the heat of crystallization when the temperature is lowered at a rate of 10 ° C./min from the molten state is 21 J / g or less. By using an amorphous material, high strength can be obtained in any direction, and better transparency, heat deformation resistance, and the like can be obtained as compared with a case where the material is not amorphous. In addition, the “ethylene phthalate-based polyester resin” refers to a homopolymer of ethylene terephthalate or 60 mol% or more, preferably 90 mol% or more, of a dicarboxylic acid component and terephthalic acid, and 60 mol% or more, preferably, of a diol component. A copolymer in which 90 mol% or more is ethylene glycol,
Or a mixture of these homopolymers and / or copolymers. Examples of the dicarboxylic acid component that can be used together with terephthalic acid include isophthalic acid, orthophthalic acid, naphthalenedicarboxylic acid, diphenyl-4,4′-dicarboxylic acid, and paraphenylene. Examples thereof include aromatic dicarboxylic acids such as dicarboxylic acid and sodium sulfoisophthalate, and aliphatic dicarboxylic acids such as adipic acid, glutaric acid, succinic acid, suberic acid, dodecandioic acid, and cyclohexanedicarboxylic acid. Furthermore, examples of the "diol component" that can be used together with ethylene glycol include diethylene glycol, triethylene glycol, tetraethylene glycol, cyclohexane dimethanol, propylene glycol, tetramethylene glycol, pentanediol, hexanediol, neopentyl glycol, and the like. Can be.

The effects of the present invention can be obtained if the molded container and the container forming body of the present invention are a container or a container forming sheet having a product storage space portion or a product storage space portion forming recess in the sheet surface. Therefore, the shape and use of the container and the container forming sheet are not particularly limited.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a container forming sheet 1 as an embodiment of a container forming body according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a joint surface side showing a developed state of the container forming sheet 1, FIG. 2 is a cross-sectional view taken along line II-II of FIG.
1 is a sectional view taken along the line III-III of FIG. 1, FIG. 4 is a bottom view of the container forming sheet 1 of FIG. 1, FIG. 5 is a perspective view showing a packaging container 30 obtained by assembling the container forming sheet 1, and FIG. It is the perspective view which showed the opening state of the packaging container 30 of No. 5.

The container forming sheet 1 is made of A having a thickness of 0.3 mm.
-Formed from PET sheet, as shown in FIG.
It has a sheet surface portion 2, a sheet surface portion 3, and an adhesive margin portion 4, and has a boundary between the sheet surface portion 2 and the sheet surface portion 3, and a sheet surface portion 2.
Are formed at the boundary between the sheet and the glue margin portion 4, and the sheet surface portions 2 and 3 are folded over using the side indicated on the paper surface as a joining surface and the folding ruled line 5 as a fold, and the sheet surface portion is folded. By joining the parts 2 and 3 to each other, the packaging container 30 having the dome-shaped product storage space 32 in the sheet body 31 can be assembled as shown in FIG.

The sheet surface portion 2 has a substantially rectangular joining surface portion 7.
Inside, a product storage space forming recess 8, a fitting protrusion 9, and a round hole-shaped latching hole 10 are provided.

Here, as shown in FIGS. 1 to 5, the product storage space forming recess 8 has a rectangular shape in plan view, and its bottom surface 8a forms a part of the bottom 7a of the joint surface portion 7. It is formed. That is, the rectangular base 8a is arranged in the vicinity along the base of the sheet surface portion 2, and the base 8a
A recessed stepped portion 11 is formed in the peripheral portion except for the central portion, and the inner portion surrounded by the recessed stepped portion 11 bulges outward from the joining surface side (in the direction of the front and back of the sheet of FIG. 1). Bottom 8a that is a bulged portion 12 and does not further have a recessed step portion 11
In other words, the central portion of the bottom surface 12a of the bulging portion 12 is made to protrude to the bottom side 7a of the joint surface portion 7, and the concave ridge portion 1 extending in the bulging direction of the bulging portion 12 is formed in the bottom surface 13a of the bulging portion 13.
4, 14, 14 are formed at appropriate intervals.

The fitting projection 9 is adapted to engage with a fitting recess 17 formed in the sheet portion 3 to be described later.
As shown in FIG. 5, when the bonding surface side is the upper surface, the upper surface is formed to project upward in a columnar shape.

On the other hand, the sheet surface portion 3 includes a product storage space portion forming recessed portion 16, a fitting recessed portion 17, a notch hole portion 18, an opening ruled line 19, and a joining surface portion 15 which can overlap the above-mentioned joining surface portion 7.
And an opening rib 20.

As shown in FIGS. 1 to 5, the product storage space forming recess 16 overlaps with the product storage space forming recess 8 with the folding ruled line 5 as a center line, that is, a line symmetrical plan view. It is formed in a rectangular shape, and its bottom surface 16a is
5 is formed so as to constitute a part of the bottom 15a.
That is, the rectangular bottom 15a is disposed in the vicinity of the bottom of the sheet surface portion 3 along the bottom thereof, and the projecting step protrudes one step to the periphery except the center of the bottom 15a so as to be able to be fitted with the step surface 8a. A part 21 is formed, and an inner part surrounded by the protruding step 21 is formed as a protruding part 22 which protrudes outward from the joining surface side (in the direction of the front and back of the sheet of FIG. 1), and the protruding step 21 is further formed. In other words, the center of the bottom surface 22a of the bulging portion 22 is the bottom 1 of the joining surface portion 15.
5a, and the recesses 24, 24, 24 extending in the bulging direction of the bulging portion 22 are formed in the bottom surface 23a of the protruding portion 23 at appropriate intervals.

As shown in FIG. 2, the fitting recess 17 is formed so as to be recessed in a cylindrical shape downward when the joining surface side is the upper surface so as to fit with the fitting projection 9. The inner diameter of the fitting recess 17 is formed slightly smaller than the outer diameter of the fitting projection 9.

The notch 18 coincides with the retaining hole 10 when the sheet surface 2 and the sheet surface 3 are folded, and the lower end edge of the notch 18 is the edge of the retaining hole 10. The tip is cut out into a round tongue so as to match the part.

The opening rule 19 is formed over the entire width of the joint surface 15 so as to substantially extend along the folding rule 5, and the tearing portion is provided between the opening rule 19 and the folding rule 5. For more information,
A portion of about 10 mm to 20 mm from the upper end is formed as a wide part with an interval of about 6 mm to 12 mm from the folding ruled line 5 so that the part can be easily grasped with a finger, and is formed diagonally so as to gradually narrow the interval from there. The lower part from the position of about 30 mm to 40 mm from the upper end is formed as a narrow part with an interval of about 3 mm to 6 mm from the folding ruled line 5.

Then, an opening rib 20 is formed substantially along the opening ruled line 19 within a width extending from the vicinity of the edge of the joining surface portion 15 serving as the opening start point of the opening ruled line 19 to the storage section forming portion 16. It is. More specifically, the opening rib 20 is formed as a linear ridge rib parallel to and parallel to the opening direction of the opening ruled line 19. By the way, the short width of the opening rib 20 is about 1 mm to 5 mm, and the length is about 10 mm.
It is formed by setting to 50 mm.

Since the container forming sheet 1 is formed as described above, the sheet surface portion 2 is folded on the sheet surface portion 3 using the folding ruled line 5 as a fold, and the recessed step portion 11 and the projecting step portion 21 are fitted. And the fitting projection 9 and the fitting recess 17 are fitted to each other.
And the product storage space portion forming recesses 8, 1
6, the packaging container 30 having the dome-shaped product storage space 32 in the sheet body 31 can be assembled as shown in FIG.

Next, the plastic molded container forming body 1
How to use will be described. When packaging a product such as cosmetics, as shown in FIG. 1, the plastic molded container forming body 1 is deployed with the joint surface side as the upper surface, and the product is placed in the bulging portion 12 of the product storage space portion forming recess 8. The sheet surface portion 2 is folded on the sheet surface portion 3 using the folding ruled line 5 as a fold (at this time, the cutout portion 18 also overlaps with the retaining hole portion 10), and the recessed step portion 11 and the projecting step portion 21 are fitted. The fitting projection 9 and the fitting recess 17 are fitted together. Next, the glue margin piece portion 4 is folded back on the back surface side of the sheet surface portion 3 with the folding ruled line 6 as a fold and adhered by a fixing means such as hot melt bonding, so that the sheet surface portion 2 and the sheet surface portion 3 are brought into close contact with each other. A product storage space portion 32 is formed in the body 31 so that products can be stored therein. In addition, as a means for attaching the adhesive margin piece portion 4, any currently known fixing means can be adopted.

The packaging container 30 in which the product is wrapped in this way is formed by, for example, passing a support rod, which is held substantially horizontally in a cantilever shape, from the vertical wall of the display stand into the hook hole 10. The packaging container 30 can be displayed in the hanging state, or the packaging container 30 can be erected with the bottom surface of the product storage space 32 as a ground plane. Further, in this display state, the periphery of the product storage space 32 is surrounded by the fitting structure including the recessed step portion 11 and the protruding step portion 21, so that dust and dirt do not enter the product storage space 32. Not only can the product be kept hygienic and clean forever, but also the bottom surfaces 12a of the bulging portions 12, 22
On the bottom surface of the product storage space portion 32a, the recesses 24, 24, 24 functioning as ribs are provided and reinforced, so that even if a heavy product is stored, it is possible to prevent the bottom from falling off. it can.

At the time of opening the package, as shown in FIG. 6, the edge of the joining surface portion 15 serving as the opening start point is pinched and the opening ruled line 19 is opened.
The product can be taken out from the product storage space 32 with one side of the sheet surface 3 open. At this time, the opening rib 20 is moved to the opening ruled line 19.
Since it serves as a guide when tearing along, the tear can be easily and cleanly opened.

[Brief description of the drawings]

FIG. 1 is a plan view showing a developed state of a container forming sheet according to an embodiment of the present invention, on a joining surface side.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a bottom view of the container forming sheet of FIG.

FIG. 5 is a perspective view showing a packaging container obtained by assembling the container forming sheet of FIG. 1;

FIG. 6 is a perspective view showing one state of an opening process of the packaging container of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container forming sheet 2 Sheet surface part 3 Sheet surface part 4 Glue margin part 5 Folding ruled line 6 Folded ruled line 7 Joining surface part 8 Commodity storage space part forming concave part 9 Fitting convex part 10 Hook hole part 11 Depression step part 12 Swelling Part 13 Projecting part 14 Concave part 15 Joining surface part 16 Commodity storage space part forming concave part 17 Fitting concave part 18 Notch hole part 19 Opening ruled line 20 Opening rib 21 Projecting step part 22 Swelling part 23 Projecting part 24 Convex part 30 Packaging container 31 Sheet 32 Product storage space

Claims (4)

[Claims] 1. A molded container having a configuration in which a product storage space is provided in a sheet body, wherein an opening rule is formed in the sheet body, and a rib is formed in the vicinity of the opening rule along the opening direction. A molded container having a configuration comprising: 2. The molded container according to claim 1, formed from an amorphous ethylene terephthalate-based polyester resin. 3. A container forming body having a configuration in which a product storage space portion forming recess is provided in a sheet body, wherein an opening rule is formed in the sheet body, and a rib is formed in the vicinity of the opening rule along the opening direction. A container forming body having a configuration formed by forming 4. The container forming body according to claim 3, which is formed from an amorphous ethylene terephthalate polyester resin.