JP5523963B2 - Synthetic resin multiple container and manufacturing method thereof - Google Patents

Description

  The present invention relates to a synthetic resin multi-container that accommodates cosmetics and the like, and more particularly to a synthetic resin multi-container that can greatly improve the design performance of the container and can eliminate the possibility of illegible display contents.

  The containers for storing the cosmetics and the like are required to have excellent chemical resistance so that the stored items do not change in quality, and high design performance to clearly and aesthetically display product information of the stored items. For this reason, glass containers have been used, but in recent years, synthetic resin containers are often used because of easy molding. In this synthetic resin container, in order to obtain a feeling of weight in the container, it is desired to thicken the container wall and the bottom by injection molding. However, when the container wall or the like is formed thick by injection molding, there is a problem that a long cooling time is required and production efficiency is deteriorated.

  Conventionally, in order to solve the above problem, a method has been proposed in which an inner container part is formed by injection molding, and then an outer container part is integrally formed by injection molding on the outer surface of the inner container part (for example, Patent Document 1). See). That is, in Patent Document 1, two injection molding machines are used, and after the inner container part is injection molded by one injection molding machine, the outer container part is integrally attached to the outer surface of the inner container part by the other injection molding machine. It is disclosed that injection molding is performed to form a synthetic resin multiple container.

Registered Utility Model No. 3114093

  In the conventional synthetic resin multiple container as described above, after the outer container part is integrally injection-molded with the inner container part, for example, a sufficient cooling time is provided, and the label is attached to the outer surface of the outer container part. Is done. This label is printed with product information such as cosmetics to be accommodated and display contents such as a design and a pattern of the container corresponding to the product. For example, the display content is directly printed on the outer surface of the outer container portion. That is, the conventional synthetic resin multiplex container has a problem that the display content is displayed on the same surface as the outer surface of the outer container portion, and the design performance of the container is low.

  In addition, especially when the contents are cosmetics or the like, the contents are rarely used up once, and are used for a long period of time. For example, while the container is repeatedly opened and closed, or while the container is placed in a bag or the like, the label or print may be damaged and the display content may not be read, and a protective layer needs to be formed on the label. was there.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a synthetic resin multi-container that can greatly improve the design performance of the container and eliminate the possibility of the display contents being unreadable and a method for producing the same.

In order to solve the above-described problems, the present invention is described as follows, for example, based on FIGS. 1 to 5 showing an embodiment of the present invention.
That is, the present invention relates to a synthetic resin multi-container, and relates to an inner container part (2) injection-molded into a bottomed container shape, and a transparent outer part integrally injection-molded to the outer surface of the inner container part (2). A synthetic resin multi-container provided with a container part (3), comprising product information, designs, patterns, etc. of the contents between the inner container part (2) and the outer container part (3) The display means (4) for displaying the display contents is arranged.

  In the present invention 2, the inner container part (2) is injection-molded, the display means (4) is arranged on the outer surface of the inner container part (2), and then integrated with the outer surface of the inner container part (2). A transparent outer container part (3) is injection-molded.

  Since the display means for displaying the display content is disposed between the inner container portion and the outer container portion, the display content of the display means is viewed with a deviation from the outer surface of the outer container portion. For this reason, the display content is visually observed behind the effect such as gloss on the outer surface of the outer container portion, and the display content can be displayed three-dimensionally inside the container, and the design performance of the display content is greatly improved. Further, since the display means is protected by the outer container portion, the above problem that the display means cannot be read is also solved.

  The display means is not limited to a specific configuration as long as it can display the display contents including product information, designs, patterns, and the like of the contained items. For example, the display unit may include a print layer that forms display content, and a protective layer that protects the print layer between the print layer and the outer container portion. In this case, the printed layer can be protected from heat generated in the step of injection molding the outer container portion into the inner container portion. For this reason, the display content printed on the printing layer is not deformed by heat, and appearance defects in the production process of the container can be prevented.

  The protective layer is not limited to a specific function as long as it protects the display content from being melted by heat. For example, the protective layer may be a thermosetting protective layer that cures when heat is applied. In this case, the display content printed on the printing layer is protected by the cured thermosetting protective layer, and even if the display content melts due to the heat generated when the outer container part is injection molded, they are displaced and deformed. You can protect without having to. The protective layer may be a protective layer that blocks heat. In this case, it is possible to prevent the display content from being melted by heat generated when the outer container portion is injection molded.

  The display means is not limited to a specific configuration as long as it is configured between the inner container portion and the outer container portion. For example, the display unit may have an adhesive layer made of an adhesive or the like, and a printing layer may be formed between the protective layer and the adhesive layer. In this case, the display means can be easily attached to the preset installation position of the display means on the inner container portion, and the display means can be fixed to the attachment position.

  Said outer container part should just be formed from a transparent forming material, and is not limited to a specific forming material. For example, you may form an outer side container part with a polyethylene terephthalate resin (henceforth PET resin) and a cyclohexane dimethanol type polyester resin. In these cases, an outer container portion having excellent transparency is formed, and display contents can be visually observed through this outer container portion. Here, the cyclohexanedimethanol-based polyester resin is, for example, a polyester composed of a terephthalic acid unit, an ethylene glycol unit, and a cyclohexanedimethanol unit, and the molar ratio of the ethylene glycol unit is higher than the molar ratio of the cyclohexanedimethanol unit. A large PETG resin, a polyester comprising terephthalic acid units and ethylene glycol units and cyclohexanedimethanol units, wherein the molar ratio of ethylene glycol units is smaller than the molar ratio of cyclohexanedimethanol units, PCTG resin, terephthalic acid units and isophthalic acid A PCTA resin comprising an acid unit and a cyclohexanedimethanol unit is included.

  The display means is not limited to a specific ink as long as the ink used for the printing layer is a general-purpose ink. For example, you may have a printing layer using the heat resistant ink which can endure the heat which arises in the case of injection molding of an outer side container part. In this case, it is possible to prevent the display contents drawn on the printing layer from being deformed by heat generated when the outer container portion is injection molded.

  Moreover, the synthetic resin multiplex container is not limited to a specific configuration as long as it is composed of an inner container portion and an outer container portion and a display means is disposed between them. For example, at least one transparent decorative container part that is injection-molded in order to the outside of the outer container part may be provided, and the display unit may be arranged at least at one position between the decorative container part and the inner container part. In this case, a plurality of display contents are visually observed in the interior of the decoration container part and the outer container part such as gloss, and for example, if the outer display contents are translucent, they are overlapped with the inner ones. The display content can be rendered more three-dimensionally, and the design performance of the display content can be greatly improved. In addition, the said decoration container part should just be formed from a transparent forming material, and is not limited to a specific forming material. For example, it is preferable to form with a PET resin or a cyclohexanedimethanol-based polyester resin because of high transparency.

  The step of arranging the display means on the outer surface of the inner container portion is not limited to a specific step as long as the display means is arranged between the inner container portion and the outer container portion. For example, the display means is formed from a printed layer that forms display content consisting of product information, designs, patterns, etc. of contained items, a protective layer that protects the printed layer, and an adhesive layer that consists of an adhesive, etc. The display means is disposed in advance on a film serving as a base so that the printing layer is located between the protective layer and the adhesive layer, and the adhesive layer is on the outside, and then on the outer surface of the inner container portion. It is good also as a process of arrange | positioning the said display means on the outer surface of the said inner side container part from the said film by applying the heat | fever and transferring the said display means while crimping | bonding the said film. In this case, the display means is transferred, and the thermosetting protective layer can be cured by heat transferred from the display means.

  The display means may be configured to be disposed between the inner container portion and the outer container portion, or may be configured to be disposed in at least one place between the decorative container portion and the inner container portion, and is not limited to a specific configuration. . For example, it is good also as a structure which arrange | positions the outer side display means which displays the display content visually observed on the outer surface of a container on the display content displayed on the display means. In this case, the outer display content and the inner display content are displayed in an overlapping manner, and the display content can be rendered more three-dimensionally, so that the design performance of the display content can be greatly improved.

  The shape of said inner container part and outer container part is not limited to a specific shape. For example, a mounting part made of an external thread corresponding to the lid may be formed on the outer peripheral surface of the inner container part, and the outer container part may be integrally injection molded on the outer surface of the inner container part excluding the mounting part.

(1) According to the synthetic resin multi-container of the first aspect of the invention, the outer surface of the outer container part and the display content of the display means are visually shifted from the same surface. For this reason, the display content is visually observed behind the effect such as gloss on the outer surface of the outer container portion, and the display content can be displayed three-dimensionally inside the container, and the design performance of the display content can be greatly improved.
(2) According to the synthetic resin multi-container of the first aspect of the present invention, the display means is protected by the outer container portion, and the problem that the display means cannot be read can be solved.

It is a partially broken perspective view of the synthetic resin multiple container in the embodiment of the present invention. It is a principal part expanded sectional view of embodiment of this invention. It is the schematic which shows the transfer apparatus of embodiment of this invention. The modification 1 of this invention is shown, (a) is the cross-sectional top view of a synthetic resin multiple container, (b) is a vertical front view of a synthetic resin multiple container. The modification 2 of this invention is shown, (a) is the cross-sectional top view of a synthetic resin multiple container, (b) is a vertical front view of a synthetic resin multiple container.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, this synthetic resin multi-container (1) forms an accommodating part (5) in which cosmetics and the like are accommodated in an inner container part (2) injection-molded into a bottomed container shape. In addition, a wide opening is opened at the upper part of the accommodating portion (5), and is formed in a wide-mouthed container shape. Further, the container includes a container wall and a bottom formed thick by an inner container part (2) and a transparent outer container part (3) injection-molded integrally with the outer surface of the inner container part (2). Further, between the inner container part (2) and the outer container part (3), a display means (4) for displaying display information including product information of the contents accommodated in the accommodating part (5) and the design of the container. Is arranged. A mounting portion (8) having an external thread on the outer peripheral surface is formed around the opening, and a lid (not shown) is detachably screwed to the mounting portion (8).

  The inner container part (2) is made of, for example, PET resin as a molding material, is formed by injection molding, and is translucent and colored in a predetermined color. On the other hand, the outer container part (3) is injection-molded integrally with the outer surface of the inner container part (2), and more specifically, the inner container part excluding the display means (4) and the mounting part (8). It is formed by injection molding so as to be fused to the outer surface of (2) and integrated with a part of the inner container part (2). This outer container part (3) is made of, for example, PETG resin, which is a cyclohexanedimethanol-based polyester resin, as a molding material and is transparent and colorless in appearance.

  As shown in FIG. 2, the display means (4) includes a print layer (4c) on which display contents are printed, and a protection located between the print layer (4c) and the outer container (3). It has a layer (4b) and an adhesive layer (4d) made of an adhesive or the like. The display means (4) is formed with a printed layer (4c) between the protective layer (4b) and the adhesive layer (4d) according to the display content, along the outer side surface of the inner container part (2). It is formed into a sheet with a length of one round.

  Further, as shown by a solid line or a virtual line in FIG. 1, the display means (4) is arranged such that the inner container portion (2) from the starting point (7) with reference to the notch-shaped recess formed in the mounting portion (8). ) Is attached through the adhesive layer (4d) along the outer side surface, and the position of the display means (4) with respect to the inner container part (2) is a predetermined position. For this reason, for example, even when the display content continuous to the display content displayed on the display means (4) is formed on the lid, the display content of the inner container part (2) and the lid is consistent. Can be improved.

  The protective layer (4b) is a thermosetting protective layer that is cured when heat is applied, and is cured by being heated to, for example, about 150 ° C. The adhesive layer (4d) is an adhesive layer having adhesiveness when heat is applied, and is an adhesive having adhesiveness when heated to about 150 ° C., for example. The protective layer (4b) and the adhesive layer (4d) are colorless and transparent, and are formed in a sheet shape having a length of one round along the outer side surface of the inner container part (2). The printed layer (4c) is a display content formed from general-purpose ink having a plurality of types of coloring, and a dot is formed between the protective layer (4b) and the adhesive layer (4d) according to the display content. Be present.

  In the above synthetic resin multi-container (1), for example, the display content of the display means (4) is shifted with respect to the outer surface of the outer container part (3), so that the outer surface of the outer container part (3) is visible. The display content can be visually observed in the back of the effect such as luster, and the display content can be displayed three-dimensionally inside the synthetic resin multi-container (1).

  On the outer surface of the outer container portion (3), that is, the outer surface of the synthetic resin multi-container (1), as shown in FIG. 1, an outer display means (13) is arranged. This outer display means (13) has a printed layer having a display content different from that of the display means (4), and the other configurations are the same. ) Is transferred to the outer surface. Note that the color of the display content displayed on the outer display means (13) is arbitrarily set, for example, translucent.

Hereinafter, the manufacturing procedure of said synthetic resin multiple container (1) will be described.
The synthetic resin multi-container (1) is manufactured using, for example, a transfer device of two injection molding machines and display means (4). In addition, the display means (4) is overlapped in the above order on the base film (10) so that the adhesive layer (4d) is on the outer side before being placed on the inner container part (2). Is formed. The film (10) is provided with a plurality of display means (4) at predetermined intervals. Further, the transfer device has an interlocking shaft around which the film (10) is wound, and a winding drive shaft to which one end of the film (10) is attached, and between the drive shaft and the interlocking shaft. Comprises a rotating shaft for gripping and rotating the inner container part (2), and a hot roller (11) heated to about 150 ° C. and slidable toward the rotating shaft.

  First, after the inner container part (2) is injection-molded at a temperature of about 270 ° C., for example, by one injection molding machine, the mold of the injection molding machine is opened and the inner container part (2) is taken out. It is. Next, the taken-out inner container part (2) is set on the rotation shaft of the transfer device as shown in FIG. At this time, the inner container part (2) is set on the rotating shaft with reference to the concave part of the mounting part (8), and the film (10) is pressure-bonded to the inner container part (2). The drive shaft, the interlocking shaft, the rotating shaft, and the hot roller (11) are interlocked, and at the same time, the hot roller (11) is slid toward the rotating shaft. That is, the film (10) is pressure-bonded to the inner container part (2) and heat is applied, and the display means (4) is transferred from the film (10) to the inner container part (2). The drive shaft, the interlocking shaft, the rotating shaft, and the hot roller (11) are interlocked, and the inner container portion (2) is set on the rotating shaft with reference to the recess, so that the inner container portion (2) The display means (4) is transferred to a predetermined position on the outer surface of.

  Next, the inner container part (2) to which the display means (4) is transferred is mounted on the core side mold of the other injection molding machine, and then the outer container part is placed on the outer surface of the inner container part (2). The outer container part (3) is injection-molded at a temperature of about 270 ° C., for example, so that (3) covers the display means (4). At this time, since the display means (4) has the protective layer (4b), thermal deformation of the printed layer (4c) and the adhesive layer (4d) in the step of molding the outer container part (3) can be prevented.

  As described above, according to the present embodiment, the display means (4) is visually observed through the transparent outer container part (3). For example, the display means (4) is displayed on the outer surface of the outer container part (3). The display content of is shifted and viewed. For this reason, the display content is visually observed behind the effect such as gloss on the outer surface of the outer container part (3), and the display content can be displayed in three dimensions inside the synthetic resin multi-container (1). Design performance can be greatly improved. Further, according to the present embodiment, the problem that the display means (4) is protected by the outer container part (3) and the display means (4) cannot be read can be solved, and a new protective layer is not provided. Can be used well.

  Further, according to the method for manufacturing a synthetic resin multiplex container of the present embodiment, it is possible to manufacture a synthetic resin multiplex container in which display means for displaying display contents is arranged between the inner container part and the outer container part. Moreover, according to the synthetic resin multiplex container (1) of the present embodiment, the display means (4) has the protective layer (4b) for protecting the printed layer (4c) and the adhesive layer (4d). Thus, thermal deformation of the printed layer (4c) and the adhesive layer (4d) can be prevented in the injection molding process of the outer container part (3).

  In addition, in the modification 1 of this invention, as shown in FIG. 4, at least 1 decoration container part (6) by which injection molding is carried out in order from the outer container part (3) to the outward, decoration container part (6), and inner side A configuration having display means (4) disposed at least at one location between the container portion (2) may be used. According to this configuration, each time the decorative container portion (6) is molded, a plurality of display means (4) can be arranged, and the glossiness and transparency of the outer container portion (3) and the glossiness of the decorative container portion (6). In addition, it becomes possible to combine the sense of transparency with the product information of the contents printed on each printing layer (4c), the design of the container, and the like, and the design performance of the container can be greatly improved.

  Further, in the second modified example of the present invention, as shown in FIG. 5, a plurality of display means (4) having different shapes and displays are provided between the inner container part (2) and the outer container part (3) to combine them. You may comprise resin multiple container (1). This configuration also has the same effect as the above-described embodiment. Note that a plurality of display means (4) different from the display means (4) may be provided on the outer surface of the outer container part (3) or the decorative container part (6).

  The synthetic resin multi-container described in the above embodiment is illustrated in order to embody the technical idea of the present invention, and the shape, dimensions, structure, etc. of each part are limited to those of this embodiment. Instead, various modifications can be made within the scope of the claims of the present invention.

  For example, in the above embodiment, the display means (4) is arranged between the inner container part (2) and the outer container part (3), or the decorative container part (6) and the inner container part ( Although the structure arrange | positioned in at least one place between 2) was demonstrated, this invention is not limited to this structure. For example, the outer display means (13) may be arranged on the outer surface of the synthetic resin multi-container (1) so that the outer display means (13) that can be visually observed is superimposed on the display content displayed on the display means (4). In this case, the outer display content displayed on the outer display means (13) and the inner display content displayed on the display means (4) are displayed in an overlapping manner, and the display content can be rendered more three-dimensionally. The design performance of the content can be greatly improved.

  Moreover, in said embodiment, it is set as the structure which protects the printing layer (4c) from the heat | fever which arises when an outer side container part (2) is injection-molded by a protective layer (4b), and prevents melting | fusing of a printing layer (4c) However, the present invention is not limited to this configuration. For example, the display means (4) may have a heat-resistant printed layer (4c) that can withstand the heat generated during the injection molding of the outer container part (2). In this case, the display unit (4) does not have the protective layer (4b), and the same effect as the above embodiment can be obtained.

  In the above embodiment, the inner container part (2) is made of a colored translucent PET resin material and the outer container part (3) is made of a colorless and transparent PETG resin material. Is not limited to this configuration. For example, the inner container part (2) and the outer container part (3) may be formed of materials colored in the same color, materials colored in different colors, or either or both May be formed of a transparent material using colorless or colored, and further using a diffusing material or the like. Moreover, you may form an inner side container part (2) with an opaque material. The inner container part (2) and the outer container part (3) may be the same molding material or other different molding materials.

  In the above embodiment, since the outer container part is formed in a state surrounding the inner container part, it is preferable that the outer container part and the inner container part can be integrated well. However, the present invention is not limited to the above-described embodiment, and the inner container portion and the outer container portion can be formed into arbitrary shapes. For example, it is preferable that the inner container portion has a substantially uniform thickness in the circumferential direction because distortion during molding is suppressed, but the outer peripheral surface is formed in an arbitrary shape such as a polygonal shape and attached in the circumferential direction. It may be a uniform thickness. The mounting portion can be formed in the outer container portion.

  In the above embodiment, two injection molding machines are used, the inner container part is formed by one injection molding machine, the outer container part is formed by the other injection molding machine, and a synthetic resin multi-container Is particularly preferable in terms of production efficiency. However, in the present invention, for example, after forming the inner container part with one injection molding machine, the mold of the injection molding machine is replaced with the mold of the outer container part, and the inner container part is added to the same injection molding machine. And the outer container part may be injection molded. In this case, the display means is arranged after the inner container portion is formed and before the outer container portion is ejected.

  The synthetic resin multi-container of the present invention can greatly improve the design performance of the container and can prevent appearance defects at the time of molding. Therefore, the multi-container is particularly suitable for a container for storing cosmetics, etc. It is also suitable for containers.

DESCRIPTION OF SYMBOLS 1 ... Synthetic resin multiple container 2 ... Inner container part 3 ... Outer container part 4 ... Display means
4b… Protective layer
4c ... Printing layer
4d ... Adhesive layer 6 ... Decoration container
10 ... Film

Claims (6)

A synthetic resin multi-container comprising an injection-molded inner container part (2) and a transparent outer container part (3) integrally injection-molded on the outer surface of the inner container part (2),
Between the inner container portion (2) and the outer container part (3), arranged display means for displaying the display content consisting of product information and design, pattern or the like of the contained object (4),
The display means (4) includes a printed layer (4c) that forms the display content, and a protective layer that protects the printed layer (4c) between the printed layer (4c) and the outer container part (3). (4b)
The protective layer (4b) is a thermosetting protective layer that is cured when heat is applied,
A synthetic resin multi-container. The display means (4) has an adhesive layer (4d) made of an adhesive or the like, and the printing layer (4c) is formed between the protective layer (4b) and the adhesive layer (4d). ,
The multiple container made of synthetic resin according to claim 1 . The outer container part (3) is formed of either a polyethylene terephthalate resin or a cyclohexanedimethanol-based polyester resin.
The synthetic resin multiple container according to claim 1 or 2 . The display means (4) has a heat-resistant printed layer (4c) that can withstand heat generated during injection molding of the outer container part (3).
The multiple container made of synthetic resin according to claim 1. At least one decorative container portion (6) that is sequentially injection-molded to the outside of the outer container portion (3);
The display means (4) disposed at least in one place between the decorative container part (6) and the inner container part (2);
The synthetic resin multiple container according to any one of claims 1 to 4 . After the inner container part (2) is injection-molded and the display means (4) is arranged on the outer surface of the inner container part (2), the outer container is transparent with the outer surface of the inner container part (2). part (3) is injection molded,
The display means (4) includes a printed layer (4c) that forms display information including product information, designs, patterns, etc. of the contents, a protective layer (4b) that protects the printed layer (4c), and an adhesive An adhesive layer (4d) made of
The display means (4) serves as a base so that the printed layer (4c) is located between the protective layer (4b) and the adhesive layer (4d), and the adhesive layer (4d) is on the outside. After pre-positioning on the film (10),
The display means (4) is transferred from the film (10) to the inner container section by pressing the film (10) on the outer surface of the inner container section (2) and transferring the display means by applying heat. Arranged on the outer surface of (2),
A method for producing a synthetic resin multi-container.

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