JP2024119174A - Manufacturing method of container with wireless communication tag - Google Patents

Abstract

To provide a method of manufacturing a container with a wireless communication tag capable of molding with accuracy.SOLUTION: A method of manufacturing a bottomed cylindrical container includes a blow molding step of blow-molding a pre-molding container comprising: an outer layer portion arranged on a radially outside; an inner layer portion arranged on a radially inside of the outer layer portion; and a wireless communication tag attached on an inner surface of the outer layer portion or an outer surface of the inner layer portion. In the blow molding step, the inner layer portion is inflated in a state in which the outer layer portion of the pre-molding container is hardened, to allow the pre-molding container to be blow-molded.SELECTED DRAWING: Figure 16

Description

The present invention relates to a method for manufacturing a container equipped with a wireless communication tag capable of wireless communication.

As a method for manufacturing a container with a wireless communication tag, for example, a method for manufacturing a synthetic resin container with an embedded RFID is known (see Figures 2 to 4 of Patent Document 1). This synthetic resin container is manufactured by fitting an inner body formed by insert molding the RFID into an outer body formed by injection molding to form a preform. In the preform, the RFID fits into a recess in the inner body and is positioned between the inner body and the outer body. The preform is blow molded to obtain a synthetic resin container.

JP 2022-131829 A

However, in the conventional manufacturing method described above, the inner and outer bodies expand during blow molding with the RFID sandwiched between them, which means that heat is not transferred well to the areas of the inner and outer bodies surrounding the RFID, resulting in poor precision in the blow molding.

Therefore, the objective of the present invention is to provide a method for manufacturing containers with wireless communication tags that can be molded with high precision.

The method for producing a container with a wireless communication tag of the present invention includes the steps of:
A method for manufacturing a bottomed cylindrical container, the method including a blow molding step of blow molding a pre-molded container including an outer layer portion disposed radially outward, an inner layer portion disposed radially inward of the outer layer portion, and a wireless communication tag attached to an inner surface of the outer layer portion or an outer surface of the inner layer portion,
In the blow molding step, the inner layer portion is inflated in a state in which the outer layer portion of the pre-molded container is hardened, thereby blow molding the pre-molded container.

According to this configuration, in the blow molding process, the outer layer of the pre-molded container is hardened and the inner layer is inflated to blow mold the pre-molded container. Therefore, regardless of whether the wireless communication tag is attached to the inner surface of the outer layer or the outer surface of the inner layer, the inner layer can be inflated against the hardened outer layer to precisely mold a container with a wireless communication tag.

In the method for producing a container with a wireless communication tag of the present invention,
the wireless communication tag is attached to an inner surface of an outer layer portion of the pre-molded container,
The method includes an injection molding step of injection molding the outer layer portion,
The injection molding step may include attaching a wireless communication tag to an inner surface of the outer layer portion during injection molding.

With this configuration, the wireless communication tag can be attached to the inner surface of the outer layer during the injection molding process, making it possible to efficiently manufacture containers with wireless communication tags.

In the method for producing a container with a wireless communication tag of the present invention,
a pre-molded container molding step of molding the pre-molded container before the blow molding step,
A hardening step of hardening the pre-molded container after the pre-molded container molding step and before the blow molding step,
In the curing step, the outer layer portion may be cured without curing the inner layer portion.

With this configuration, the outer layer is hardened in the hardening process after the pre-molded container molding process and before the blow molding process, so the inner layer of the pre-molded container can be blow molded with high precision in the blow molding process.

As described above, the present invention can provide a container with a wireless communication tag that allows the RFID tag to be positioned with high precision.

FIG. 1 is a side view of a container with a wireless communication tag according to one embodiment of the present invention. FIG. 2 is a plan view of a container with a wireless communication tag according to the embodiment. FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 5 is a cross-sectional view taken along line VV in FIG. 3, viewed obliquely from above. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 2, with the inner layer portion removed, as viewed obliquely from above. FIG. 7 is a plan view of the pre-molded container according to the embodiment. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a plan view of the pre-molded container according to the embodiment, with the tag removed. FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 10, viewed obliquely from above. FIG. 12 is a cross-sectional view for explaining a tag installation step in the method for producing a wireless communication tagged container according to the embodiment. FIG. 13 is a cross-sectional view for explaining the injection molding step in the manufacturing method. FIG. 14 is a cross-sectional view for explaining the curing step in the manufacturing method. FIG. 15 is a cross-sectional view for explaining the blow mold after the mold clamping step in the manufacturing method is completed. FIG. 16 is a cross-sectional view for explaining the blow molding step in the manufacturing method. FIG. 17 is a cross-sectional view for explaining the removal step in the manufacturing method.

The following describes the method for manufacturing a container with a wireless communication tag according to one embodiment of the present invention, including the configuration of the container with a wireless communication tag after manufacture and the specific manufacturing method of this container, with reference to the attached drawings.

As shown in Figs. 1 to 4, the wireless communication tagged container 1 according to this embodiment is a container capable of accommodating contents. The wireless communication tagged container 1 is a bottomed cylindrical container equipped with a wireless communication tag 2 (see Fig. 3).

The wireless communication tagged container 1 has, for example, a cylindrical container body 10, a container bottom 11 that closes one opening of the container body 10, a container shoulder 12 that extends from the other end of the container body 10 and has an outer diameter at its tip that is smaller than the outer diameter at its base end (i.e., it is tapered), and a cylindrical container neck 13 that extends from the tip of the container shoulder 12. The wireless communication tagged container 1 also has an outer layer 3 that is arranged radially outward, an inner layer 4 that is arranged radially inward of the outer layer 3, and a frame 5 that is arranged between the outer layer 3 and the inner layer 4. The wireless communication tagged container 1 is made of synthetic resin.

In the following description, the height direction refers to the height direction of the wireless communication tagged container 1 (the up and down direction in Figures 1, 3, and 4), the radial direction refers to the radial direction of the container body 10 (the direction perpendicular to the central axis of the container body 10), and the circumferential direction refers to the circumferential direction of the container body 10.

The container body 10 in this embodiment is tubular, for example, cylindrical (see FIG. 3). The diameter of the container body 10 is equal at every point in the height direction, but may be different at least in some parts. For example, the container body 10 may have a tapered shape or a shape that bulges in the circumferential direction at the center in the height direction. The container body 10 may also be a rectangular tube.

The portion of the container body 10 located above the extending position of the container bottom 11 has a two-layer structure consisting of an outer layer 3 and an inner layer 4. The portion of the container body 10 located below the extending position of the container bottom 11 has a single-layer structure that is continuous with the outer layer 3.

The container bottom 11 is connected to the bottom end 100 of the container body 10. The container bottom 11 is the part that faces downward when the wireless communication tagged container 1 is upright. The container bottom 11 has a single-layer structure made up of the inner layer 4.

In this embodiment, the container bottom 11 extends from a position above the bottom opening end 101 at the bottom end 100 of the container body 10. The container bottom 11 also has a curved shape that bulges downward from the radial outer periphery 110 to the center 111. The center 111 of the container bottom 11 is located above the bottom opening end 101 of the container body 10. The container bottom 11 may be flat, in which case it may extend from the bottom opening end 101 of the container body 10.

The container shoulder 12 extends from the top open end 102 of the container body 10. The container shoulder 12 is formed in a tapered cylindrical shape, with both the inner and outer diameters gradually decreasing from the base end to the tip end. The continuous portion between the container body 10 and the container shoulder 12 has a slightly rounded shape, but may also be angular. In this embodiment, the container shoulder 12 has a two-layer structure consisting of an outer layer 3 and an inner layer 4.

The container neck 13 extends from the open end 120 on the top side of the container shoulder 12 and is formed in a cylindrical shape. The tip of the container neck 13 is open, and the contents can be put in and taken out of the wireless communication tagged container 1 through this opening. Note that the container neck 13 in this embodiment is configured so that a lid that opens and closes this opening can be attached and detached. In this embodiment, the container neck 13 has a single layer structure that is continuous with the outer layer 3 and the inner layer 4. In addition, a male screw that can be screwed into a female screw provided on the inside of the lid is formed on the outer periphery of the container neck 13.

The outer layer 3 constitutes the outer layer of the container body 10 and container shoulder 12 of the wireless communication tagged container 1. Specifically, the outer layer 3 includes an outer body 30 that constitutes the container body 10 of the wireless communication tagged container 1, and an outer shoulder 32 that constitutes the container shoulder 12 of the container 1 and is continuous with the top 300 of the outer body 30.

The outer body 30 is tubular, and in this embodiment, is cylindrical. The outer shoulder 32 is tubular, and in this embodiment, is formed into a tapered tubular shape, and is formed so that the inner and outer diameters gradually decrease from the base end to the tip end. The connecting portion 33 between the outer body 30 and the outer shoulder 32 is slightly rounded, but may be angular.

The inner layer 4 constitutes the inner layer of the container body 10 and container shoulder 12 of the container 1 with a wireless communication tag. Specifically, the inner layer 4 includes an inner body 40 that constitutes the container body 10 of the container 1 with a wireless communication tag. The inner layer 4 also includes an inner bottom 41 that constitutes the container bottom 11 of the container 1. The inner layer 4 also includes an inner shoulder 42 that constitutes the container shoulder 12 of the container 1.

The inner body 40 includes an inner body main body 43 disposed radially inside the outer body 30, and a cover 44 that covers the frame 5 from the radial inside. The inner body main body 43 is tubular, and in this embodiment, is cylindrical.

The inner body 43 overlaps along the inner surface of the outer body 30. The inner body 43 is also in close contact with the outer body 30 from the radially inner side. Furthermore, the outer surface 430 of the inner body 43 is in close contact with the inner surface 301 of the outer body 30 as a whole.

The covering portion 44 is formed by forming a part of the inner body portion 40 into a shape that imitates the shape of the frame portion 5 (described later) that protrudes radially inward from the outer layer portion 3. As shown in Figures 4 and 5, the covering portion 44 is composed of a covering main body portion 440 that covers the inner surface 22 of the wireless communication tag 2 from the radially inner side, and a covering connecting portion 441 that connects the covering main body portion 440 and the inner body main body portion 43.

The cover body 440 has a cover surface 446 that covers the inner surface 22 of the wireless communication tag 2 (see FIG. 3). The cover surface 446 is a flat surface that corresponds to the inner surface 22 of the wireless communication tag 2. In this embodiment, the cover body 440 includes a body portion 442 that covers the inner surface 22 of the wireless communication tag 2, and a top portion 443, a bottom portion 444, and a peripheral portion 445 that respectively cover the top contact portion 510, the bottom contact portion 511, and the peripheral contact portion 513 described below (see FIG. 4). The body portion 442 is surrounded by the top portion 443, the bottom portion 444, and the peripheral portion 445. The top portion 443 extends in the width direction of the wireless communication tag 2 along the top end of the body portion 442. The bottom portion 444 is arranged in a pair with a gap in the width direction of the wireless communication tag 2. A pair of peripheral portions 445 are provided, each extending from both ends of the main body portion 442 in the width direction toward the bottom side.

The inner shoulder 42 is cylindrical, and in this embodiment, is formed into a tapered cylindrical shape, with the inner and outer diameters gradually decreasing from the base end to the tip end. The inner shoulder 42 is also in close contact with the outer shoulder 32 from the radially inner side. Furthermore, the outer surface 420 of the inner shoulder 42 is in close contact with the inner surface 320 of the outer shoulder 32 as a whole.

As shown in FIG. 5, the frame 5 is integrally formed with the outer layer 3. The frame 5 is disposed between the outer body 30 and the inner body 40. The frame 5 protrudes radially inward from the inner surface 35 of the outer layer 3. The frame 5 includes a support portion 50 that supports the wireless communication tag 2. As shown in FIG. 6, the frame 5 includes an abutment portion 51 that is disposed around the support portion 50 and abuts against the outer periphery 20 of the wireless communication tag 2 supported by the support portion 50.

The support part 50 has a shape following the shape of the wireless communication tag 2 (see FIG. 5). The support part 50 also has a support surface 500 that supports the outer surface 21 of the wireless communication tag 2. The support surface 500 is a surface that corresponds to the outer surface 21 of the wireless communication tag 2. In this embodiment, since the outer surface 21 of the wireless communication tag 2 is a flat surface as described later, the support surface 500 is also a flat surface. The support part 50 protrudes radially inward from the inner surface 35 of the outer layer part 3. Therefore, the support surface 500 is positioned radially inward from the inner surface 35 of the outer layer part 3 (in this embodiment, the inner surface 301 of the outer body part 30). A step S is formed at the boundary between the support part 50 and the outer body part 30.

In this embodiment, the abutment portion 51 abuts against the outer periphery 20 of the rectangular plate-shaped wireless communication tag 2 (see FIG. 6). The abutment portion 51 is disposed on the top side of the support portion 50 and includes a top abutment portion 510 that abuts against the top outer periphery 200 of the wireless communication tag 2 supported by the support portion 50. The abutment portion 51 is disposed on the bottom side of the support portion 50 and includes a bottom abutment portion 511 that abuts against the bottom outer periphery 201 of the wireless communication tag 2 supported by the support portion 50. The abutment portion 51 is also disposed on the outer side in the width direction of the support portion 50 and includes a periphery abutment portion 513 that abuts against the width outer periphery 203 of the wireless communication tag 2 (the width outer periphery 203 that connects the top outer periphery 200 and the bottom outer periphery 201).

The top contact portion 510 is disposed at the continuous portion 33 between the outer body portion 30 and the outer shoulder portion 32 in the outer layer portion 3. In this embodiment, one top contact portion 510 is disposed. The top contact portion 510 extends along the entire width of the top outer peripheral portion 200 of the wireless communication tag 2.

The bottom contact portion 511 is disposed on the outer body portion 30 of the outer layer portion 3. In this embodiment, the bottom contact portions 511 are disposed in a pair aligned in the width direction of the wireless communication tag 2. Between the pair of bottom contact portions 511 is an open portion 512 where no contact portion 51 is provided. Each bottom contact portion 511 extends along each end of the bottom outer periphery 201 of the wireless communication tag 2 in the width direction. The bottom contact portion 511 includes an abutment main body portion 515 that abuts against the bottom outer periphery 201, and a bottom extension portion 516 that extends from the abutment main body portion 515 to the bottom side. The bottom extension portion 516 has a shape that protrudes toward the bottom side, and in this embodiment, is substantially semicircular.

The peripheral abutment portion 513 extends from the continuous portion 33 of the outer layer portion 3 to the bottom side. In this embodiment, a pair of peripheral abutment portions 513 are arranged to sandwich the wireless communication tag 2 in the width direction. The peripheral abutment portions 513 extend along the entire height direction of the width periphery 203 of the wireless communication tag 2.

In this container 1 with a wireless communication tag, the cover connecting portion 441 of the cover portion 44 has a curved shape along the step S between the support portion 50 and the outer body portion 30 (see FIG. 5). In addition, the wireless communication tag 2 is sandwiched between the support surface 500 of the support portion 50 and the cover surface 446 of the cover main body portion 440.

As shown in FIG. 3, the thickness of the outer shoulder 32 is thicker than that of the outer body 30. The thickness of the outer body 30 is thicker at the top and thinner at the bottom. The thickness of the portion of the outer body 30 where the support 50 is provided and the support 50 are combined is thicker than the thickness of the portion of the outer body 30 where the support 50 is not provided. By adjusting the amount of protrusion of the support 50 from the inner surface of the outer body 30, the distance between the wireless communication tag 2 and the outer body 30 can be adjusted, and an appropriate communication distance for the wireless communication tag 2 can be ensured. The thickness of the outer body 30, the outer shoulder 32, and the bottom side opening end 101 of the container body 10 may be the same thickness and can be selected appropriately.

The thickness of the inner layer 4 is substantially the same in every region. In this embodiment, the thickness of the inner layer 4 is thinner than the thickness of the outer shoulder 32. The thickness of the inner layer 4 is also thinner than the combined thickness of the region of the outer body 30 where the support 50 is provided and the support 50 itself.

The wireless communication tag 2 is, for example, a thin wireless communication tag 2, for example, a rectangular plate-shaped wireless communication tag. The outer surface 21 of the wireless communication tag 2 is flat and is in contact with a support surface 500 facing radially inward of the support portion 50 of the frame portion 5. The inner surface 22 (inner surface 22 facing radially inward) located on the opposite side to the outer surface 21 of the wireless communication tag 2 is flat and is in contact with the cover surface 446 of the cover portion 44 of the inner layer portion 4.

All surfaces of the wireless communication tag 2 (end surfaces of the outer periphery 20 of the wireless communication tag 2) except for the outer surface 21 and inner surface 22 are flat (see FIG. 6). The surface facing the top side of the top outer periphery 200 of the wireless communication tag 2 abuts against the surface facing the bottom side of the top abutting portion 510 of the frame 5. The surface facing the bottom side of the bottom outer periphery 201 of the wireless communication tag 2 abuts against the surface facing the top side of the bottom abutting portion 511 of the frame 5. Furthermore, the surface facing the outside in the width direction of the width outer periphery 203 of the wireless communication tag 2 abuts against the surface facing the inside in the width direction of the periphery abutting portion 513 of the frame 5.

The wireless communication tag 2 is configured to have a storage means for storing information, and a wireless communication means for wirelessly communicating information to be read and written from the storage means. The wireless communication tag 2 of this embodiment is a so-called RFID tag, and is configured to have an IC chip and an antenna connected to the IC chip. The IC chip and antenna may be provided on a base such as a substrate or a sticker.

The wireless communication tag 2 is an RFID tag that combines both a UHF tag that uses frequencies in the UHF band (capable of communicating over long distances) and an NFC tag that uses frequencies in the HF band, particularly a frequency of 13.56 MHz (capable of communicating over short distances) into a single tag.

The wireless communication tag 2 may be a passive type that transmits information written in the storage means in response to external access, or an active type that can spontaneously transmit information written in the storage means. It may also be an RFID tag that is only a UHF tag, or an RFID tag that is only an NFC tag.

The above-mentioned container 1 with a wireless communication tag is manufactured by a method for manufacturing a cylindrical container with a bottom, which includes a blow molding process for blow molding the pre-molded container 6 shown in Figures 7 to 9. The pre-molded container 6 has an outer layer portion 63 arranged on the radially outer side, and an inner layer portion 64 arranged on the radially inner side of the outer layer portion 63. The pre-molded container 6 also has a neck portion 66 formed in a cylindrical shape, which extends from the top edge of the outer layer portion 63 and the top edge of the inner layer portion 64. The pre-molded container 6 has a wireless communication tag 2 attached to the inner surface 630 of the outer layer portion 63 (see Figure 9). Furthermore, the pre-molded container 6 has a frame portion 65 formed integrally with the outer layer portion 63.

As shown in FIG. 11, the frame portion 65 is integrally formed with the outer layer portion 63. The frame portion 65 protrudes radially inward from the inner surface 630 of the outer layer portion 63. The frame portion 65 includes a support portion 650 that supports the wireless communication tag 2. The frame portion 65 also includes an abutment portion 651 that is disposed around the support portion 650 and abuts against the outer periphery 20 of the wireless communication tag 2 supported by the support portion 650.

The abutment portion 651 is disposed on the top side of the support portion 650 and includes a top abutment portion 6510 that abuts against the top outer periphery 200 of the wireless communication tag 2 supported by the support portion 650. The abutment portion 651 is disposed on the bottom side of the support portion 650 and includes a bottom abutment portion 6511 that abuts against the bottom outer periphery 201 of the wireless communication tag 2 supported by the support portion 650. The abutment portion also includes a periphery abutment portion 6513 that is disposed on the outer side in the width direction of the support portion 650 and abuts against the width outer periphery 203 of the wireless communication tag 2.

The top contact portion 6510 is disposed at the continuous portion 634 between the outer body portion 632 and the outer shoulder portion 633 in the outer layer portion 63. In this embodiment, one top contact portion 6510 is disposed. The top contact portion 6510 extends along the entire width of the top outer peripheral portion 200 of the wireless communication tag 2.

The bottom contact portion 6511 is disposed on the outer body portion 632 of the outer layer portion 63. In this embodiment, the bottom contact portions 6511 are disposed in a pair in the width direction of the wireless communication tag 2. Between the pair of bottom contact portions 6511 is an open portion 6512 where no contact portion 651 is provided. Each bottom contact portion 6511 extends along each end of the width direction of the bottom outer periphery 201 (see also FIG. 6) of the wireless communication tag 2. The bottom contact portion 6511 includes an abutment body portion 6515 that abuts against the bottom outer periphery 201 of the wireless communication tag 2, and a bottom extension portion 6516 that extends from the abutment body portion 6515 to the bottom side. The bottom extension portion 6516 has a shape that protrudes toward the bottom side, and in this embodiment, is substantially semicircular.

The peripheral abutment portion 6513 extends from the continuous portion 634 of the outer layer portion 63 to the bottom side. In this embodiment, a pair of peripheral abutment portions 6513 are arranged to sandwich the wireless communication tag 2 in the width direction. The peripheral abutment portions 6513 extend along the entire height direction of the width outer periphery 203 of the wireless communication tag 2.

The manufacturing method of the wireless communication tagged container 1 of this embodiment includes an injection molding process for injection molding the outer layer 63. This manufacturing method also includes a pre-molded container molding process for molding the pre-molded container 6 before the blow molding process. Furthermore, this manufacturing method includes a hardening process for hardening the pre-molded container 6 after the pre-molded container molding process and before the blow molding process.

The manufacturing method for the wireless communication tagged container 1 will be described below with reference to Figures 12 to 17. First, as the pre-molding container molding process, the tag installation process, mold clamping process, and injection molding process are carried out in this order.

As shown in FIG. 12, the tag installation process is a process of installing the wireless communication tag 2 in a pre-molded container molding die (injection die) used in the injection molding process. The injection die is composed of one cavity 70, one top core 71 arranged on the top side of the cavity 70, and a pair of width side cores 72, 73 arranged on the widthwise outer sides of the cavity 70. In this embodiment, the cavity 70 has a first portion 701 that molds the outer body portion 632 of the pre-molded container 6, and a second portion 702 that molds the outer shoulder portion 633 of the pre-molded container 6. In addition to being composed of such parts 70, 71, 72, and 73, the injection die may be composed of parts of a different number or shape from these parts.

In this embodiment, the wireless communication tag 2 is placed on a flat surface of the outer surface of the injection mold. Specifically, in the tag placement process, the wireless communication tag 2 is placed on the outer surface 700 of the cavity 70 (for example, a flat surface of the outer surface 700 facing outward in the width direction). In this embodiment, the tag placement section 7010 where the wireless communication tag 2 of the cavity 70 is placed is recessed into the outer surface 700 of the cavity 70, and specifically, is recessed so as to open outward in the first portion 701. The tag placement section 7010 is also open towards the second portion 702.

After the tag installation process, in the mold clamping process, the top core 71 is moved to the bottom side and the width cores 72 and 73 are moved inward in the width direction to complete the mold clamping operation of the injection mold 7. In the mold clamping process, the top core 71 is moved to a position where it abuts against the width cores 72 and 73, and the width cores 72 and 73 are each moved to a position where they abut against the cavity 70.

As shown in FIG. 13, the pre-molded container 6 is formed by performing an injection molding process using the injection mold 7 after the mold clamping operation has been completed. In the injection mold 7 after the mold clamping operation has been completed, a space 74 is provided between the cavity 70 and the cores 71, 72, and 73. In addition, in this injection mold 7, the wireless communication tag 2 is disposed between the cavity 70 and the width side core 72. In this embodiment, the wireless communication tag 2 is disposed between the top end of the cavity 70 and the top end of the width side core 72.

In this embodiment, the outer layer 63 and the inner layer 64 of the pre-molded container 6 are formed by a single injection molding. In this injection molding process, the outer layer 63 and the frame 65 (see also FIG. 11) are molded integrally. Specifically, the outer layer 63 and the frame 65 are molded integrally by filling the space 74 of the injection mold 7 with molten resin.

In addition, in this embodiment, the injection molding process includes a process of attaching the wireless communication tag 2 to the inner surface 630 of the outer layer portion 63 of the pre-molded container 6 in the injection molding. In this injection molding process, for example, the wireless communication tag 2 can be adhered to the inner surface 630 of the outer layer portion 63 by using the heat of the injection molding. In this embodiment, the injection molding process is performed using a high-temperature injection mold 7. In addition, a heat-sensitive adhesive is provided on the surface of the outer layer portion 63 of the wireless communication tag 2 facing the inner surface 630. Specifically, by filling the space 74 of the injection mold 7 with molten resin, the wireless communication tag 2 is adhered to the inner surface 630 of the outer layer portion 63 of the pre-molded container 6 by the heat of the molten resin. In addition, the adhesive melts due to this heat, and the wireless communication tag 2 adheres to the inner surface 630 of the outer layer portion 63, and the wireless communication tag 2 is adhered to the inner surface 630 of the outer layer portion 63 by this adhesive. Furthermore, the molten resin filling the outer surface 21 of the wireless communication tag 2 becomes the support portion 650 and the abutment portion 651 of the frame portion 65 of the pre-molded container 6, and the outer body portion 632 is integrally formed on the outside of this (see also FIG. 11).

The above series of steps constitutes the pre-molded container molding process in this embodiment.

After the pre-molded container molding process, as shown in FIG. 14, the top core 71 with the pre-molded container 6 attached is moved to the top side, and the width cores 72 and 73 are moved outward in the width direction to open the injection mold 7.

In this embodiment, a hardening process is performed during the mold opening operation. Specifically, the hardening process hardens the outer layer 63 without hardening the inner layer 64. In this embodiment, a temperature adjustment process is performed to adjust the temperature of the pre-molded container 6 as the hardening process. The temperature adjustment process is a process in which the temperature of the outer layer 63 of the pre-molded container 6 is lowered from the molding temperature in the pre-molded container molding process (specifically, the molding temperature in the injection molding process) to harden the outer layer 63. In the temperature adjustment process of this embodiment, the temperature of the inner layer 64 is maintained and the temperature of the outer layer 63 is lowered to make the temperature of the outer layer 63 lower than that of the inner layer 64, hardening the outer layer 63 and maintaining the inner layer 64 in a softened state (semi-molten state). When the outer layer 63 is in a hardened state, the wireless communication tag 2 is positioned by the frame 65 integrated with the outer layer 63 and fixed by adhesion.

After the temperature adjustment process, as shown in FIG. 15, the blow molding process is performed using a mold for molding a finished container (blow mold). In this embodiment, the blow mold is composed of a top cavity 80 and a bottom cavity 81, each of which is provided individually, and a pair of width side cavities 82 and 83. The top cavity 80 is a part that supports the neck portion 66 of the pre-molded container 6. The width side cavities 82 and 83 are parts that support the outer layer portion 63 of the pre-molded container 6. The bottom cavity 81 is a part that regulates the shape of the pre-molded container 6 during blow molding together with the outer layer portion 63. In this embodiment, the top cavity 80 is the top core 71 of the injection mold 7 used in the injection molding process. In addition to being composed of such parts 80, 81, 82, and 83, the blow mold may be composed of parts of a different number or shape.

After the temperature adjustment process, in the mold clamping process, the bottom cavity 81 is moved toward the top side, and the width side cavities 82 and 83 are moved inward in the width direction, completing the mold clamping operation of the blow mold 8. In the mold clamping process, the bottom cavity 81 is moved to a position where it abuts against the bottom edge of the inner layer 64 of the pre-molded container 6, and the width side cavities 82 and 83 are each moved to a position where they abut against the outer layer 63 of the pre-molded container 6.

When the clamping operation is completed for the blow mold 8, the surface facing the top of the outer periphery of the bottom cavity 81 abuts against the bottom edge of the inner layer 64 of the pre-molded container 6. Also, in this blow mold 8, the surfaces facing inward in the width direction of the width side cavities 82 and 83 each abut against the entire outer surface 631 of the outer layer 63 of the pre-molded container 6.

As shown in FIG. 16, the blow mold 8 after the clamping operation is used to perform the blow molding process to form the container 1 with the wireless communication tag. The blow molding process is a process in which the inner layer 64 is inflated to blow mold the pre-molded container 6 while the outer layer 63 of the pre-molded container 6 is hardened. In this embodiment, the blow molding process can blow mold the pre-molded container 6 by utilizing the heat of the inner layer 64 generated in the injection molding process. In the blow molding process, the inner layer 64 is inflated until it assumes a shape that abuts the wireless communication tag 2, the outer layer 63, and the bottom cavity 81.

The blow molding process causes the inner layer 64 to become the inner body 40 having the inner body main body 43 and the covering portion 44. Specifically, in the blow molding process, the inner layer 64 expands and overlaps with the hardened outer layer 63 and the frame 65. At this time, the inner layer 64 deforms to imitate the outer layer 63 and the frame 65. The deformed inner layer 64 has the inner body main body 43 and the covering portion 44, which have approximately the same thickness (see FIG. 5). The covering portion 44 is molded to imitate the frame 65. More specifically, the covering body 440 is molded to imitate the inner surface 22 of the wireless communication tag 2. The covering connection portion 441 is molded to imitate the step S between the outer layer 63 and the frame 65. In this embodiment, the inner layer 64 becomes the inner bottom 41 and the inner shoulder 42 in addition to the inner body 40.

After the blow molding process, as shown in FIG. 17, an ejection process is performed to eject the wireless communication tagged container 1 from the blow mold 8. Specifically, the top cavity 80 is moved to the top side, the bottom cavity 81 is moved to the bottom side, and the width side cavities 82 and 83 are moved outward in the width direction to perform an opening operation of the blow mold 8, thereby ejecting the wireless communication tagged container 1. After the blow molding process, the outer surface 45 of the inner layer 4 is in close contact with the inner surface 35 of the outer layer 3 in the wireless communication tagged container 1.

As described above, with the container 1 with a wireless communication tag, as shown in FIG. 3, when the container 1 is molded, the wireless communication tag 2 is fitted into the support portion 50 of the frame portion 5 and positioned with the abutment portion 51 in abutment, so that the tag can be positioned with high precision. In addition, since the wireless communication tag 2 is positioned between the outer layer portion 3 and the inner layer portion 4, the wireless communication tag 2 is unlikely to come off the container 1 even if some kind of impact is applied to the container 1 with a wireless communication tag. Furthermore, since the wireless communication tag 2 will not come off the container 1 unless the container 1 with a wireless communication tag is cut, etc., tampering with the wireless communication tag 2 of this container 1 can also be prevented.

In the container 1 with a wireless communication tag according to this embodiment, the frame 5 is integrally formed with the outer layer 3, and the top contact portion 510 is disposed at the continuous portion 33 between the outer body portion 30 and the outer shoulder portion 32, thereby increasing the rigidity of the frame 5 and enabling the wireless communication tag 2 to be positioned with high precision when the container 1 is molded. In addition, because the top contact portion 510 contacts the wireless communication tag 2 from the top side, the wireless communication tag 2 does not shift position during molding (specifically, after injection molding).

In addition, according to the wireless communication tagged container 1 of this embodiment, as shown in FIG. 6, the bottom contact portion 511 includes a contact main body portion 515 and a bottom extension portion 516, so that even if the wireless communication tag 2 is not completely attached to the outer layer portion 3, the wireless communication tag 2 can be removed from the mold without remaining in the mold. In addition, since the bottom contact portion 511 contacts the wireless communication tag 2 from the bottom side, the wireless communication tag 2 does not shift position during molding (specifically, after injection molding), and the wireless communication tag 2 can be removed from the container body portion 10 side to the container shoulder portion 12 side.

In addition, in this embodiment, as shown in FIG. 3, the frame 5 is disposed in a large area between the outer body 30 and the inner body 40, making it easy to position the frame 5 when molding the wireless communication tagged container 1. Also, since the wireless communication tag 2 is disposed in the container body 10 of the wireless communication tagged container 1, it is convenient to read the wireless communication tag 2 from the side of the container 1.

According to the manufacturing method of the container 1 with a wireless communication tag described above, in the blow molding process, the outer layer 63 of the pre-molded container 6 is hardened while the inner layer 64 is inflated to blow mold the pre-molded container 6 (see FIG. 16 ). Therefore, even if the wireless communication 2 tag is attached to the inner surface 630 of the outer layer 63, the inner layer 64 can be inflated against the hardened outer layer 63 to mold the container 1 with a wireless communication tag with high precision.

According to the manufacturing method of the wireless communication tagged container 1 of this embodiment, the wireless communication tag 2 can be attached to the inner surface 630 of the outer layer 63 of the pre-molded container 6 during the injection molding process, and since the injection molding and blow molding can be performed consecutively, the wireless communication tagged container 1 can be manufactured efficiently.

In addition, according to the manufacturing method of the container 1 with a wireless communication tag of this embodiment, after the pre-molded container molding process and before the blow molding process, the outer layer 63 of the pre-molded container 6 is hardened in a hardening process (for example, the temperature of the outer layer 63 of the pre-molded container 6 is lowered in a temperature adjustment process to harden the outer layer 63), so that the shape of the inner layer 64 of the pre-molded container 6 after it is inflated in the blow molding process is regulated by the outer layer 63, and the inner layer 64 of the pre-molded container 6 can be blow molded with high precision.

Furthermore, in this embodiment, in the injection molding process, the wireless communication tag 2 is placed on a flat surface of the outer surface 700 of the cavity 70 of the injection mold 7, so that the wireless communication tag 2 is attached to the outer layer 63 of the pre-molded container 6 while maintaining a flat state. As a result, in the completed wireless communication tagged container 1, the wireless communication tag 2 can maintain a flat state, making it easier to read the wireless communication tag 2 compared to a configuration in which the wireless communication tag 2 is curved.

In this embodiment, the tag installation portion 7010 of the cavity 70 of the injection mold 7 is open toward the second portion 702, which is the portion for molding the outer shoulder portion 32 (see FIG. 13). Therefore, the open portion is filled with molten resin by injection molding, and the wireless communication tag 2 is positioned. Furthermore, when the cavity 70 is removed during mold opening of the injection mold 7, the wireless communication tag 2 is not caught by the cavity 70.

The wireless communication tagged container of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

In the above embodiment, the frame portion 5 was formed integrally with the outer layer portion 3, but the frame portion 5 may be formed integrally with the inner layer portion 4 as long as it is configured to be disposed between the outer body portion 30 and the inner body portion 40. In this case, the covering portion that covers the frame portion 5 only needs to be provided on the outer layer portion 3, and the covering portion provided on the outer layer portion 3 covers the frame portion 5 from the radial outside. Also, in this case, the support portion 50 of the frame portion 5 is a support portion that is recessed radially inward.

In the above embodiment, the frame 5 is disposed between the outer body 30 and the inner body 40, but it may be disposed between the outer shoulder 32 and the inner shoulder 42. In this case, the wireless communication tag 2 is disposed on the container shoulder 12 of the wireless communication tagged container 1, which makes it convenient to read the wireless communication tag 2 from above the container 1.

In the above embodiment, the abutment portion 51 of the frame portion 5 includes a top abutment portion 510, a bottom abutment portion 511, and a peripheral abutment portion 513, but it is sufficient to include at least one of these. In addition, the shape of each abutment portion 510, 511, 513 is not limited to the configuration of the above embodiment. For example, in the above embodiment, a pair of bottom abutment portions 511 are provided, but only one may be provided, and the configuration may be such that the bottom abutment portion 511 abuts the entire width of the surface facing the bottom side of the bottom outer peripheral portion 201 of the wireless communication tag 2. In this case, the bottom abutment portion 511 may include an abutment main body portion 515 that abuts against the bottom outer peripheral portion 201, and a bottom extension portion 516 that extends from both ends of the abutment main body portion 515 in the width direction to the bottom side.

In the above embodiment, the top contact portion 510 extends along the entire width of the top outer periphery 200 of the wireless communication tag 2, but it may extend along part of the width of the top outer periphery 200. In this case, multiple top contact portions 510 may be arranged with gaps in the width direction of the wireless communication tag 2. Similarly, the periphery contact portion 513 is provided on each width outer periphery 203, and extends along the entire height of the width outer periphery 203 of the wireless communication tag 2, but multiple periphery contact portions 513 may be provided on each width outer periphery 203, and may be arranged with gaps in the height direction of the width outer periphery 203 of the wireless communication tag 2.

In the above embodiment, one wireless communication tag 2 is provided for one wireless communication tagged container 1, but this configuration is not limited to this. For example, multiple wireless communication tags 2 may be provided for one wireless communication tagged container 1. In this case, the wireless communication tags 2 may be arranged at positions that face each other in the radial direction of the container body 10 of the container 1. Also, one wireless communication tag 2 may be arranged on each of the container body 10 and the container shoulder 12 of the container 1.

In the above embodiment, in the tag installation process, the wireless communication tag 2 is placed on the surface of the outer surface 700 of the cavity 70 facing outward in the width direction, but the wireless communication tag 2 may be placed on the surface of the outer surface 700 facing the top side. In this case, in the completed wireless communication tagged container 1, the wireless communication tag 2 is placed between the outer shoulder 32 and the inner shoulder 42.

In the above embodiment, the wireless communication tag 2 is attached to the inner surface 630 of the outer layer portion 63 of the pre-molded container 6 (see FIG. 9), but may be attached to the outer surface 640 of the inner layer portion 64 (see FIG. 8). In this case, for example, in the tag installation process shown in FIG. 12, the wireless communication tag 2 is arranged on the surface facing inward in the width direction of the inner layer portion 703 of the cavity 70, and the space 74 of the injection mold 7 is filled with molten resin, so that the wireless communication tag is attached to the outer surface 640 of the inner layer portion 64 by heat. Even in such a case, in the blow molding process, the inner layer portion 64 is inflated in a state in which the outer layer portion 63 of the pre-molded container 6 is hardened, and the pre-molded container 6 is blown. Even if the wireless communication 2 tag is attached to the outer surface 640 of the inner layer portion 64, the wireless communication tag-attached container 1 can be precisely molded by inflating the inner layer portion 64 against the hardened outer layer portion 63.

When the wireless communication tag 2 is placed on the surface of the inner surface 703 of the cavity 70 facing inward in the width direction, if the wireless communication tag 2 is placed on the inner surface 703 at a portion closer to the bottom than the top end of the cavity 70 in the tag installation process, a wireless tagged container 1 is obtained in which the wireless communication tag 2 is placed between the outer body 30 and the inner body 40. On the other hand, if the wireless communication tag 2 is placed on the inner surface 703 at the top end of the cavity 70, a wireless tagged container 1 is obtained in which the wireless communication tag 2 is placed between the outer shoulder 32 and the inner shoulder 42.

In the above embodiment, the outer layer 63 and the inner layer 64 of the pre-molded container 6 were formed by a single injection molding, but the outer layer 63 and the inner layer 64 may be molded separately and then integrated to form the pre-molded container 6.

In the above embodiment, the wireless communication tag 2 is adhered to the inner surface 630 of the outer layer 63 by a heat-sensitive adhesive provided on the wireless communication tag 2, but even without this adhesive, the wireless communication tag 2 can be attached to the outer layer 63 by hardening the molten resin surrounding the wireless communication tag 2 during the injection molding process.

In addition, in the above embodiment, after the injection molding process using the high-temperature injection mold 7, a temperature adjustment process is performed to maintain the temperature of the inner layer 64 and to lower the temperature of the outer layer 63. However, after the injection molding process using the low-temperature injection mold 7, a temperature adjustment process may be performed to raise the temperature of the inner layer 64 and to maintain the temperature of the outer layer 63.

1...container with wireless communication tag (container), 2...wireless communication tag, 3...outer layer portion, 4...inner layer portion, 5...frame portion, 6...container before molding, 7...injection mold, 8...blow mold, 10...container body portion, 11...container bottom portion, 12...container shoulder portion, 13...container neck portion, 20...outer periphery portion, 21...outer surface, 22...inner surface, 30...outer body portion, 32...outer shoulder portion, 33...continuous portion, 35...inner surface, 40...inner body portion, 41...inner bottom portion, 42...inner shoulder portion, 43...inner body main body portion, 44... Covering portion, 45...outer surface, 50...supporting portion, 51...abutting portion, 63...outer layer portion, 64...inner layer portion, 65...frame portion, 66...neck portion, 70...cavity, 71...top core, 72, 73...width core, 74...space, 80...top cavity, 81...bottom cavity, 82, 83...width cavity, 100...end portion, 101, 102...opening end, 110...periphery, 111...center portion, 120...opening end, 200...top outer periphery, 201...bottom Outer periphery, 203... outer periphery, 300... top, 301... inner surface, 320... inner surface, 420... outer surface, 430... outer surface, 440... cover body, 441... cover connecting portion, 442... body portion, 443... top portion, 444... bottom portion, 445... peripheral portion, 446... cover surface, 500... support surface, 510... top abutment portion, 511... bottom abutment portion, 512... open portion, 513... peripheral abutment portion, 515... abutment body portion, 516... abutment body portion, 516 ...Bottom extension, 630...inner surface, 631...outer surface, 632...outer body, 633...outer shoulder, 634...continuous portion, 640...outer surface, 650...support portion, 651...contact portion, 700...outer surface, 701...first portion, 702...second portion, 703...inner surface, 6510...top contact portion, 6511...bottom contact portion, 6512...open portion, 6513...peripheral contact portion, 6515...contact body portion, 6516...bottom extension, 7010...tag installation portion, S...step

Claims (3)

A method for manufacturing a bottomed cylindrical container, the method including a blow molding step of blow molding a pre-molded container including an outer layer portion disposed radially outward, an inner layer portion disposed radially inward of the outer layer portion, and a wireless communication tag attached to an inner surface of the outer layer portion or an outer surface of the inner layer portion,
The blow molding step includes blow molding the pre-molded container by inflating the inner layer portion while the outer layer portion of the pre-molded container is hardened.
A method for manufacturing a container with a wireless communication tag. the wireless communication tag is attached to an inner surface of an outer layer portion of the pre-molded container,
The method includes an injection molding step of injection molding the outer layer portion,
The injection molding step includes attaching a wireless communication tag to an inner surface of the outer layer portion during injection molding.
A method for producing a container with a wireless communication tag according to claim 1. a pre-molded container molding step of molding the pre-molded container before the blow molding step,
A hardening step of hardening the pre-molded container after the pre-molded container molding step and before the blow molding step,
In the hardening step, the outer layer portion is hardened without hardening the inner layer portion.
A method for producing a container with a wireless communication tag according to claim 1 or 2.