JP2007039041A - Container and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a returnable assembling type container without peeling, staining, breakage, decrease in function caused by being brought into contact with water, metals or the like of an IC tag by molding the container under a condition that a wireless tag is fixed at a predetermined position in a preform body internally mounted in a hollow part, and to provide its manufacturing method. <P>SOLUTION: The assembling type container 1 is constituted of a bottom wall 2 and four faces of side walls 3 consisting of resin-made panels 7 internally mounted with the preform body 9. The four faces of the side walls 3 are connected with each side of the bottom wall 2 so as to be freely stood and laid down. The four faces of side walls 3 are constituted so that a pair of the side walls are folded on the upper face of the bottom wall 2, and the other pair of the side walls are overlapped thereon and folded. The assembling type container 1 forms a box-shaped container with an open upper face under a condition that the four faces of the side walls 3 are stood. On one of side walls 3, the wireless tag 11 is fixed on the preform body 9. The preform body 9 is welded on the inner wall faces of the front wall 5 and the back wall 6 of a resin-made panel 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a container having a hollow double wall structure having a front wall and a back wall, and more particularly, an assembly type folding container comprising a resin panel having a hollow double wall structure having a front wall and a back wall that can be used repeatedly. The present invention relates to a container having a configuration in which a wireless tag is arranged in a hollow portion of the container, and a method for manufacturing the same.

  Containers used for storing and transporting goods are required to read and write management information on their contents from the outside. In addition, in container returnable systems, the container manufacturer and date of manufacture are required. , Delivery destination from manufacturer, delivery date, type of containment, manufacturer, production date, product delivery destination, product delivery date, empty container collector, collection year It is desirable to record the history information such as the date of recycle processing, the date of cleaning, the date of cleaning, the re-delivery destination of the recycled container, the date of re-delivery, and so on. Therefore, it is required to be able to record and read out easily and accurately. For this reason, a device in which a wireless tag such as a wireless information storage medium is embedded in a part of a container has been used (see Japanese Patent Laid-Open Nos. 2000-6563 and 2003-321063).

Also, when fixing a wireless tag to a container, if the wireless tag is affixed to the outer surface of the container, it will peel off due to multiple use of the container, and if the container is touched by dirt, damage, moisture, metal, etc., the radio wave will be blocked. Therefore, the function is degraded. Therefore, the wireless tag is covered with an inlet base so that the wireless tag is not exposed on the outer surface (see Japanese Patent Application Laid-Open No. 2002-355847), and stored in a protective container (see Japanese Patent Application Laid-Open No. 2005-75423). It was supposed to be fixed.
JP 2000-6563 A JP 2003-321063 A JP 2002-355847 A JP-A-2005-75423

  However, in such a container, the position where the IC tag is placed is limited for molding, and it may be difficult to place the IC tag at a desired position of the container as appropriate. Furthermore, although the IC tag is not exposed to the outside, the inlet base material, the protective container, and the like are exposed to the outside, so that there is a problem that the appearance is impaired.

  Therefore, the present invention arranges a wireless tag in a hollow portion of a container having a hollow double wall structure having a front wall and a back wall, and a preform (foamed body) in which the wireless tag is installed in the hollow portion. By forming the container in a state fixed in advance to a predetermined position, a returnable container is obtained in which the IC tag is not peeled off, soiled, damaged, or deteriorated due to contact with moisture, metal, or the like. Here, the wireless tag is a non-contact type information storage medium called an IC tag or an RFID tag, which can be attached to various articles to read and write management information, history information, etc. using radio waves. Is.

  In order to achieve the above object, the present invention provides a container according to claims 1 to 3 and a method for producing the container according to claims 4 to 6. That is, the foldable container according to claim 1 is a hollow double-walled container having a front wall and a back wall, and is formed from a pre-molded thermoplastic resin between the front wall and the back wall of the container. The preform is formed, and at least one wireless tag is fixed to the preform.

  The assembly type container according to claim 2 of the present invention is an assembly type container composed of a resin panel having a hollow double wall structure having a front wall and a back wall, and is welded to the entire circumference of the resin panel. A preform is made of a thermoplastic resin preformed in a shape substantially the same as the space inside the hollow portion, and a wireless tag is fixed to at least one of the preforms. The preform is welded to the inner wall surface of the front and back walls of the resin panel.

  According to a third aspect of the present invention, there is provided an assembling-type container having a pair of opposing side walls and a pair of opposing side walls that are connected to each side of the bottom wall in a tiltable manner. The pair of side walls are folded so as to face the top surface of the bottom wall, and the other pair of side walls are folded on top of the pair of folded side walls, and the top surface is opened with each side wall standing upright. An assembled container for forming a box-shaped container, wherein the bottom wall and the side wall are made of resin panels, and the preform is a foam.

  A container manufacturing method according to claim 4 of the present invention is a method for manufacturing a container having a hollow double wall structure having a front wall and a back wall, wherein a molten parison or a resin sheet is disposed between divided molds. After fixing the wireless tag to a pre-formed foam, the foam is placed between the split molds and clamped to weld the inner surface of the molten parison or resin sheet and the outer surface of the foam. It is characterized by.

  A container manufacturing method according to claim 5 of the present invention is characterized in that, in the method according to claim 4, the wireless tag is adhered in a recess formed on the surface of the foam.

  A container manufacturing method according to claim 6 of the present invention is characterized in that, in the method according to claim 4, the wireless tag is fixed inside the foam.

  According to the present invention, a wireless tag is arranged in a hollow portion of a hollow double-walled container having a front wall and a back wall, and the preform (foamed body) in which the wireless tag is installed in the hollow portion. By forming the container in a state where it is fixed at a predetermined position in advance, a returnable container can be obtained in which the IC tag is not peeled, soiled, damaged, or deteriorated due to contact with moisture, metal or the like.

  FIG. 1 is a partially broken perspective view showing a collapsible assembly-type container according to an embodiment of the present invention.

  In FIG. 1, an assembly-type container 1 has four side walls 3 attached to a bottom wall 2 by tilting so that the side walls 3 can be tilted up and down, and the side walls 3 adjacent to each other are detachably connected by a latch 4. Yes. The four side walls 3 are configured to fold a pair of side walls and further fold another pair of side walls on top of each other. The assembly-type container 1 forms a box-shaped container whose upper surface is opened with the four side walls 3 standing upright. The bottom wall 2 and the side wall 3 are made of a resin panel 7 having a hollow double wall structure having a front wall 5 and a back wall 6, and the resin panel 7 has a welded portion around the entire periphery thereof, Is internally provided with a preformed body 9 made of a thermoplastic resin that is preliminarily molded in the same shape as the hollow space. At least one of the preforms 9, in the illustrated embodiment, one preform 9 of the side wall 3 is formed with a recess 10 and a wireless tag 11 is fixed in an embedded state. The preformed body 9 is welded to the inner wall surface of the front wall 5 and the back wall 6 of the resin panel 7.

  The container according to the present invention is used for storing and transporting articles, and is a so-called returnable container having a box shape or a tray shape that can be used a plurality of times. In addition to the configuration described above, the bottom wall and the side wall may be integrally connected to each other via a thin hinge. In the case of a thin hinge, the bottom wall and the side wall can be folded outwardly without being overlapped and folded.

  2 to 8 show a blow molding mode of the resin panel 7 in which the preformed body 9 constituting the assembly type container 1 shown in FIG. 1 is housed, and each figure is a sectional view. .

  As shown in FIG. 2, the pair of sheet parisons 13 and 13 extruded from the resin extrusion head 12 are disposed between the divided molds 14 and 14. The split molds 14 and 14 have concave cavities 15 and 15 for vacuum forming, and 16 is a contact surface that forms the vacuum suction gap and communicates with the vacuum chamber 17. Reference numeral 18 denotes an inner frame, and the inner frame 18 can protrude from the body 20 having the heating surfaces 19 and 19 facing the cavities 15 and 15 of the divided molds 14 and 14 and the periphery of the cavities 15 and 15. Moving frames 21 and 21 are provided. Here, the thermoplastic resin constituting the front wall and the back wall of the container may be any one that can be blow-molded, such as polyethylene resin, polypropylene resin, ethylene-vinyl acetate copolymer, vinyl chloride resin, ABS resin ( (Acrylonitrile-styrene-butadiene resin), polyamide resin, polystyrene resin, polyester resin, polycarbonate resin, engineering plastics such as modified polyphenylene ether, etc. are suitable, such as glass fiber, carbon fiber, calcium carbonate, talc, mica, etc. A filler can be added.

  As shown in FIG. 2, the split molds 14, 14 are opened and an intermediate frame 18 is disposed at an intermediate position thereof, and sheet-like parisons 13, 13 are disposed between the intermediate frame 18 and the cavities 15, 15, respectively. . Next, as shown in FIG. 3, the molds 14, 14 are clamped until they contact the moving frames 21, 21, and the sheet-like parisons 13, 13 are sandwiched between the cavities 15, 15, thereby forming the cavities. A closed space is formed between 15 and 15 and the sheet-like parisons 13 and 13. Next, as shown in FIG. 4, in this state, the closed space is vacuum-sucked from the contact surface 16 so as to be adsorbed to the sheet-like parisons 13 and 13 cavities 15 and 15, and as shown in FIG. 14 is further closed to seal the inside of the mold from the outside air, and a pressurized fluid is introduced through blowing means provided in the inner frame 18 to bring the sheet parisons 13 and 13 into close contact with the cavities 15 and 15. Next, as shown in FIG. 6, the split molds 14 and 14 are opened, the middle frame 18 is detached, and as shown in FIG. 7, the sheet-like parison 13 along one cavity 15 of the split molds 14 and 14. The preformed body 9 which is a foam is joined and disposed on the inner surface of the.

  A concave portion 11 for fitting the wireless tag 11 is formed in the preformed body 9 in advance, and the wireless tag 11 is fixed to the concave portion 10 by means such as an adhesive, and this state is shown in FIG. As described above, the split molds 14 and 14 are closed, and the puncture needle 22 that forms an opening in one sheet-like parison 13 is protruded from the surface of the cavity 14 so that the space between the preformed body 9 is communicated with the outside air. The preform 9 is completely welded and integrated with the inner surfaces of the pair of sheet parisons 12 and 12 to obtain a resin panel 7 constituting one side wall 3 of the assembly-type container 1 shown in FIG. When the divided molds 14 and 14 are closed and the pressurized fluid is introduced through the blowing means provided in the middle frame 18, the sheet-like parison 13 is heated by the heating surfaces 19 and 19 provided in the middle frame 18. , 13 is kept in a molten state, and the preformed body 9 which is a foam is welded to the inner wall surface of the front wall 5 and the back wall 6 of the resin panel 7.

  Here, the preform is provided in the hollow portion of the container, and is for imparting functions such as heat insulation and rigidity of the container, and can be appropriately selected from a vacuum heat insulating material, a honeycomb panel, a foam, and the like. However, it is preferably made of polyethylene, polypropylene, polystyrene, etc., and is made of the same material as the thermoplastic resin constituting the front and back walls. Moreover, fillers, such as glass fiber, carbon fiber, calcium carbonate, talc, and mica, can be appropriately added to the foam. Further, in the present invention, blow molding is a method in which a cylindrical parison or a plurality of resin sheets are melt-extruded or pre-molded and overheated and melted, and placed between divided molds and clamped. It refers to so-called direct blow molding or sheet blow molding which is molded into a shape, and it does not matter whether air is blown or not.

  The method of fixing the wireless tag to the preform is not limited to the form described in the above embodiment, and can be fixed by any means, and the wireless tag is fixed to a recess formed on the surface of a foam or the like. In order to prevent the appearance of unevenness or sink marks due to the wireless tag on the front wall or the back wall, and to place the wireless tag at a desired position. It becomes easy to position. Also, depending on the base material of the wireless tag, deformation and damage may occur due to heat during molding. In such a case, the heat during molding is blocked by the foam by inserting and fixing it inside the foam. Thus, deterioration of the wireless tag can be prevented.

It is the perspective view which fractured | ruptured a part which shows the assembly-type container which concerns on one embodiment of this invention. The cross section which shows the shaping | molding aspect of the resin panel which equipped the preforming body which comprises the assembly-type container shown in FIG. 1, opened the division mold, arrange | positioned the inner frame, and showed the process of arrange | positioning a pair of sheet-like parison FIG. FIG. 3 is a cross-sectional view showing a state where the split mold is closed from the state of FIG. It is sectional drawing which shows the state which carried out the vacuum suction of a pair of sheet-like parison from the state of FIG. FIG. 4 shows a state in which the split mold is further closed until it abuts against the middle frame while pushing down the moving frame, and a pressurized fluid is introduced through the blowing means of the middle frame to bring the sheet parison into close contact with the cavity. It is sectional drawing. It is sectional drawing which shows the state which opened the division | segmentation metal mold | die from the state of FIG. 5, and removed the inner frame. FIG. 7 is a cross-sectional view showing a state in which a preform is joined and arranged on the inner surface of a sheet-like parison along one cavity from the state of FIG. 6. FIG. 8 is a cross-sectional view showing a state where the split mold is closed from the state of FIG. 7 and the preform is completely welded and integrated with the inner surfaces of a pair of sheet-like parisons.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Assembling-type container 2 Bottom wall 3 Side wall 4 Latch 5 Front wall 6 Back wall 7 Resin panel 8 Hollow part 9 Preliminary molded object 10 Recessed part 11 Radio tag 12 Resin extrusion head 13, 13 Sheet-like parison 14,14 Split mold 15, 15 Cavity 16 Contact surface 17 Vacuum chamber 18 Middle frame 19, 19 Heating surface 20 Body 21 Moving frame 22 Pricking needle

Claims (6)

A hollow double-walled container having a front wall and a back wall,
Between the front wall and the back wall of the container, a preformed body made of a pre-formed thermoplastic resin is embedded,
A foldable container, wherein at least one wireless tag is fixed to the preform. An assembly-type container comprising a resin panel with a hollow double wall structure having a front wall and a back wall,
The resin panel has a welded part all around it,
In the hollow portion is pre-molded with a thermoplastic resin preformed in a shape substantially the same as the space in the hollow portion,
A wireless tag is fixed to at least one of the preforms,
A prefabricated container in which the preform is welded to the inner wall surface of the front and back walls of the resin panel. Having a pair of opposing side walls and a pair of opposing side walls that are connected to each side of the bottom wall so as to be freely raised and lowered,
Fold a pair of side walls against the top surface of the bottom wall,
And it is comprised so that it may overlap and fold on a pair of side wall which folded the other pair of side walls,
An assembly-type container that forms a box-shaped container whose upper surface is open with each side wall standing.
The bottom and side walls are made of resin panels,
3. A prefabricated container according to claim 2, wherein the preform is a foam. A method for producing a hollow double-walled container having a front wall and a back wall,
Place a molten parison or resin sheet between the split molds,
After fixing the wireless tag to the pre-formed foam,
The foam is placed between the split molds and clamped,
A method for producing a container, wherein the inner surface of a molten parison or resin sheet and the outer surface of a foam are welded. The method of manufacturing a container according to claim 4, wherein the wireless tag is adhered in a recess formed on the surface of the foam. The method of manufacturing a container according to claim 4, wherein the wireless tag is fixed inside the foam.

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