JP3943153B2 - Plastic molded body and packaging body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plastic molded article suitable for storing small articles such as cosmetics and writing instruments, and a package comprising the molded article.
[0002]
[Prior art]
In recent years, there has been a demand for a product-filled container with a beautiful appearance and a beautiful treatment, especially in the cosmetics industry. There have been various efforts to match the consumer's sense. And most of them are called blister packs in which a plastic sheet full of transparency is molded according to the shape of the stored items, filled with products, and then the back side is covered with cardboard with patterns and color patterns printed on one side It is what is done.
[0003]
These blister packs are beautiful at first glance because the printed side of the cardboard can be seen through the plastic sheet when viewed from the front side, but when viewed from the back side, it is noticeable that it is placed in cardboard so that the perforation for taking out the product is not noticeable Usually only. And at supermarkets or department store cosmetics departments and cosmetics retailers, it seems that there are many places where high-priced products such as lipsticks are stored in blister packs and hung on hooks for sale.
[0004]
However, this blister pack has become a criminal goal of breaking the cardboard perforation and taking out the contents while leaving the pack intact, which is a serious educational and commercial problem.
[0005]
In other words, if you take out the whole pack at a store such as a supermarket, you can handle it with a security device such as an alarm buzzer, but if you take out the contents while leaving the pack as it is, the back side is covered with cardboard, so it looks at first glance This is because it is difficult to understand that the contents have been extracted, and the security device does not work, so there is no way to hit it.
[0006]
[Problems to be solved by the invention]
In view of this, the present inventor seems to fit a concave portion for storing an article having a sheet surface moderately depressed at one of the symmetrical positions around the folding line at the substantially center of the plastic sheet, and the other concave portion. A plastic molded body was formed in which a protruding portion was formed, a predetermined article was stored, and then folded at the folding line to form a storage package.
[0007]
The package that has been assembled by this molded product is easy to find when the contents are removed because the part containing the article is transparent when viewed from the front side or the back side of the package, and the plastic sheet The sheet surface can be used for beautiful printing, which is preferable in that it matches the sense of consumers in recent years.
[0008]
However, when the sheet surface is brought into contact with the convex part after fitting a predetermined article in the concave part for storing the article, there is a slight difference in the dimension between the concave part and the convex part itself, or the formation position of both If there is a slight misalignment in the package, forcibly mating will cause distortion in the finished package, resulting in gaps between the joining surfaces and dust, or subtle misalignment in the top and bottom printing. Therefore, fine and beautiful printing sometimes has an adverse effect. Further, since there is a problem to be solved in that the sheet surface may be warped or wavy, it may become unsightly. As a result of further intensive studies, the present invention has been completed.
[0009]
That is, the present invention is to provide a plastic molded body capable of producing a package that is beautiful and full of sense even if there are some dimensional differences in the concave and convex portions for storing articles, and a package including the molded body. It is intended.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is a molded body having a plastic sheet body that can be folded in two, wherein the folded portion is a curved portion that bulges outward, and one sheet body is joined to the other sheet body. The concave portion for storing articles is formed on the sheet surface, while the other sheet body forms convex portions for storing articles that can be concavo-convexly fitted with the concave portion when the two sheet surfaces are in contact with each other, and the two sheets of curved portions are formed. A folding line is formed in the approximate center of the edge corresponding to the boundary between the two and the sheet bodies on both sides of the curved portion are formed in substantially the same shape, and one sheet body forms a cut line slightly inside the outer edge to form the outer edge. A cut piece between the cut line and the other sheet body is a folded piece with a little width on the outside via a fold line formed at a position substantially symmetrical with the outer edge of the one sheet body around the fold line. plastics having extended and formed by constituting the It is characterized in that it has a form.
[0011]
The folding curve is formed by forming an upper bottom portion having an appropriate height having the same width as the bottom portion at the bottom portion of the deformed U-shaped groove having a flat cross-sectional shape and alternately connecting steps formed by the bottom portion and the upper bottom portion. It is also possible to have a substantially U-shaped groove with a different cross-section in size along the edge, and to have a thin streak, a normal perforation, and other configurations. .
[0013]
Slight warpage in the direction away from the sheet body on both sides of the curved part , or on the sheet body part on the outer side of the concave part or convex part for storing the article, with the curved part being a crease and the sheet surfaces coming into contact with each other. It is more preferable to have the configuration as given.
[0014]
Note that both the cut line and the edge fold line can have a thin streak, a perforation, and other configurations. The edge fold line is preferably configured to be cut off.
[0015]
Furthermore, the present invention folds the plastic molded body in two with the curved portion as a crease, joins the sheet surfaces together, and adjusts the curved portion so that the convex portion is fitted in the concave portion, and the plastic molded body the addition to clamshell in a curved portion, and is characterized in a plastic package having made so as to bond to the outer surface of the folding return pieces cut folded at the edge fold line piece construction. Bonding can be performed by bonding with an adhesive, heat sealing, or the like.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a plastic molded body 1 of the present invention. The plastic molded body 1 is formed by vacuum, pressure molding or heating, press molding, etc. using a plastic sheet having an appropriate strength made of transparent thermoplastic such as unstretched PET, polyvinyl chloride, polypropylene, polystyrene, polycarbonate, etc. The rectangular sheet bodies 2 and 3 having substantially the same shape are formed so that the curved portion 4 is located at the center of both. The thickness of the sheet is preferably about 100 to 1000 microns.
[0017]
Sheet 2 forms a recess 5 for article storage that recessed to an appropriate depth substantially suitable size at the center of the joint surface to become the seat surface 2a of the seat body 3, the boundary between the curved portion 4 A locking hole 2c having an arbitrary shape is formed slightly inward from the outer edge facing the corresponding edge 2b.
[0018]
When the sheet body 3 is joined to the sheet surface 3a which is a joint surface with the sheet body 2, the sheet body 3 can be fitted into the recess 5 and protrudes at a height slightly shallower than the depth of the recess 5 A convex portion 6 is formed, and a locking hole 3c having substantially the same shape as the locking hole 2c is formed at a position symmetrical to the locking hole 2c with the curved portion 4 interposed therebetween.
[0019]
The curved portion 4 is formed by appropriately bulging on the back side of the sheet surfaces 2a and 3a and curving in the direction in which the edges 2b and 3b overlap each other, and is formed at a portion located substantially at the center with the edges 2b and 3b. A folding line 7 to be described later is provided in parallel along the edges 2b and 3b.
[0020]
As shown in FIG. 2, the folding line 7 is parallel to the edges 2b and 3b on the sheet surfaces 2a and 3a side of the curved portion 4, and the bottom 7a is formed on the bottom 7a of the deformed U-shaped groove whose cross-sectional shape is flat at the bottom. The upper bottom portion 7b having the same width and having an appropriate height is formed, and the steps formed by the bottom portion 7a and the upper bottom portion 7b are alternately arranged. In addition to this, as shown in FIG. 3, grooves 7c and 7d having substantially U-shaped cross sections with different sizes may be provided in parallel along the edges 2b and 3b, or perforations and thin stripes may be formed. good.
[0021]
The plastic molded body 1 shown in FIG. 1 having the above-described configuration has a curved portion 4 in a direction in which the edges 2b and 3b overlap with each other with a folding line 7 as a center after a predetermined article is stored in the concave portion 5. The convex part 6 is fitted into the concave part 5 so that the sheet surface 3a is superposed on the sheet surface 2a while being bent. Then, if at least the periphery of the overlapped portion of the sheet surface 2a and the sheet surface 3a is sealed by heat sealing or the like, a package body (not shown) that stores a predetermined article in the concave portion 5 and is covered with the convex portion 6 (not shown). ) Can be completed. Since the packaging body has a certain packaging state, it is possible to prevent a crime of extracting the contents stored in the package.
[0022]
In this case, taking the adequate margin between the seat body 2 and the seat body 3 for curved portion 4 is freely moderately deformed, the dimensional differences caused by distortion during molding of the plastic molding 1 of the curved portion 4 Absorbing by deformation, the convex portion 6 can be fitted into the concave portion 5 without any difficulty.
[0023]
Moreover, since the concave portions 5 and the convex portions 6 were formed while leaving flat portions on the sheet surface 2a and the sheet surface 3a, the finished package was matched with consumer preference by applying beautiful printing on the flat surfaces. Can be. Further, since the sheet surfaces 2a and 3a are polymerized without gaps, dust and dust do not enter the recess 5 after molding of the package from the gap between them, and the molded body 1 itself is transparent, so visibility is also improved. Forms a package that is good and full of sense that appeals to consumers' aesthetics. In addition, if the latching hole obtained by overlapping the latching hole 2c and the latching hole 3c is passed through the hook, the package after storing the article can be hooked.
[0024]
In addition, the plastic molded body 11 according to the second embodiment of the present invention shown in FIG. 4 has sheet bodies 12 and 13 formed on both sides of the curved portion 14 in a vertically long rectangular shape having substantially the same shape, and an arbitrarily shaped locking. Holes 12c and 13c are formed, respectively, and concave portions 15 and convex portions 16 that are approximately half the size of the sheet bodies 12 and 13 are respectively formed. Flat portions of the sheet surfaces 12a and 13a of the sheet bodies 12 and 13 Is intended to be wide.
[0025]
This molded body 11 is preferable in that more beautiful printing can be performed using a wide flat portion of the sheet surfaces 12a and 13a. Of course, since the curved portion 14 absorbs the dimensional difference caused by the distortion at the time of sheet molding, the convex portion 16 can be fitted into the concave portion 15 so that the package can be assembled without any difficulty, and printing misalignment is made inconspicuous. Therefore, it is possible to obtain a package with a beautiful appearance after completion. The bending portion 14 is formed with a folding line 17 along the edges 12b and 13b.
[0026]
And while forming a package from the molded object 1 or the molded object 11 as mentioned above, and sealing a package, an existing thermal sheet can be given to a sheet surface, or it can be sealed with an adhesive, In the molded body 11, the value of the present invention is further enhanced.
[0027]
That is, the sheet surface 12a forms a cut line 12d parallel to the folding line 17 slightly inward from the outer edge, and a cut piece 12e is formed between the outer edge and the cut line 12d. In addition, the sheet body 13 has a folded piece 13e extending slightly outside the sheet surface 13a via an edge fold line 13d formed at a line-symmetrical position around the outer edge of the sheet body 12 and the folding line 17. Then, the short width W1 from the edge 12b to the outer edge of the sheet body 12 is formed narrower than the short width W2 from the edge 13b to the outer edge of the folded piece 13e by the short width W3 of the folded piece 13e. .
[0028]
Thereby, a predetermined article is put in the concave portion 15 and the curved portion 14 is bent, the sheet body 13 is overlapped with the sheet body 12, the convex portion 16 is fitted into the concave portion 15, and then the edge fold line 13d is used as a folding margin. The folded piece 13e can be bent in the direction of the sheet surface 13a of the arrow A in the figure, and the surface of the folded piece 13e can be joined to the back surface of the cut piece 12e as shown in FIG. At this time, after a predetermined amount of sealing adhesive is applied to the upper surface of the folded piece 13e before folding, the folded piece 13e and the cut piece 12e are pressed from both the upper and lower sides to bond them together. And can be integrated. Thereby, the sealed state of the package after completion can be more reliably maintained.
[0029]
On the other hand, when the consumer takes out the contents, it is expected that it is difficult to take out because the two sheets 12 and 13 are stacked. For this reason, the sheet body 12 is provided with a cutoff line 12d. According to this, when the folded piece 13e is bent and bonded to the cut piece 12e as shown in FIG. 5, the cut portion 18 is formed by the sheet body 13, the edge fold line 13d and the folded piece 13e, and the cut piece 12e sandwiched therebetween. Can be formed.
[0030]
Since the entire thickness of the cut portion 18 is thicker than the other portions of the sheet bodies 12 and 13, the cut portion 18 can have a high degree of rigidity, and when the package body is opened by scratching with a toe or a cutter along the cut line 12d. It is easy to put in force and make the cut easy.
[0031]
Further, if the criminal tears the cut portion 18 and tries to extract the contents of the package, the package itself is inevitably destroyed or opened. In this case, since it becomes easy to find a store clerk and a guard, it contributes to the reduction of crime.
[0032]
Note that the contact method between the folded piece 13e and the cut piece 12e may be a normal heat seal. Further, the folding line 17, the cut line 12 d, and the edge folding line 13 d are formed by alternately arranging steps similar to the folding line 7 of the molded body 1, and having a substantially U-shaped cross section with different sizes. Needless to say, any one provided with a groove or one having a perforation or a thin streak may be used.
[0033]
Furthermore, since the sheet surfaces 12a and 13a are wider than the recesses 15 and 16 in the above package, special care is required when the molded body 11 is molded. This is because when the sheet body 12 and the sheet body 13 are folded in two to form a package, there is a possibility that a gap is generated between the sheet surfaces 12a and 13a due to distortion at the time of molding and dust or dust enters. .
[0034]
In order to remove this, as shown in FIG. 6, the sheet body 12 and the sheet body 13 of the molded body 11 obtained by slightly changing the shape of the molding die are warped in the opposite direction to the respective sheet surfaces 12a and 13a. An angle α may be provided. When the molded body 11 thus molded is folded in half, a gap is formed between the sheet body 12 and the sheet body 13 as shown in FIG. 7, but when the folded piece 13e is bent and adhered to the outside of the cut piece 12e, This is because the sheet surfaces 12a and 13a come into close contact with each other due to the reaction force of warping. The warp angle α in this case may be about 0.3 mm to 2.0 mm per 10 mm.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a plastic molded body of the present invention.
FIG. 2 is a partially enlarged perspective view showing an example of a folding line.
FIG. 3 is a partially enlarged perspective view showing another folding line.
FIG. 4 is a perspective view showing another embodiment of the plastic molded body of the present invention.
5 is a partially enlarged perspective view showing an adhesion portion of a package body made of the molded body shown in FIG. 4. FIG.
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is a cross-sectional view showing a package made of the molded body of FIG. 6. FIG.
[Explanation of symbols]
1,11 Plastic molding
2,3 sheet body
2a, 3a Sheet surface
4, 14 curved portion
5,15 recess
6,16 Convex
7,17 Folded line
12,13 Sheet body
12a, 13a Seat surface
12b, 13b edge
12d tear line
13d fold line
12e cut piece
13e folded piece

Claims (3)

A molded body having a plastic sheet body that can be folded in two, wherein the folded portion is a curved portion that bulges outward, and one sheet body forms a recess for storing articles on the sheet surface that joins the other sheet body. On the other hand, the other sheet body forms a convex part for storing an article that can be concavo-convexly engaged with the concave part when both sheet surfaces are in contact with each other, and is substantially at the center of the edge corresponding to the boundary between the two sheet bodies of the curved part The sheet body on both sides of the curved portion is formed in substantially the same shape, and one sheet body forms a cut line slightly inside the outer edge, and a cut piece between the outer edge and the cut line. The other sheet body has a configuration in which a folded piece with a slight width is extended on the outer side thereof via a fold line formed at a position substantially line symmetrical with the outer edge of the one sheet body with a fold line as the center. Plastic molded body. Slight warpage in the direction of separation toward the outside in the state where the sheet surfaces are in contact with each other with the curved portion as a crease, on the sheet body on both sides of the curved portion, or on the sheet body portion on the outer side of the article storing concave portion or convex portion The plastic molded body according to claim 1, having a configuration as given. A plastic package having a configuration in which the plastic molded body according to claim 1 or 2 is folded in half at a curved portion, and the folded piece is folded at an edge fold line and joined to the outer surface of the cut piece.

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