JP3134112U - Structure of lunch box material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a lunch container material that can obtain a visual effect as if a design, line, character, etc. are directly printed on a piece of wood, and can be printed at high speed without using a conventional method.
SOLUTION: A piece of wood having a fiber structure, a heat-meltable plastic layer that penetrates into the fiber structure of the piece of wood, a light-transmissive continuous film material, and between the heat-meltable plastic layer and the film layer The lunch box material is constituted by a printed design that is sandwiched and can be seen from above the light-transmitting film material.
[Selection] Figure 4

Description

  This invention relates to a structure of a lunch box material for manufacturing a lunch box.

  Natural wood can be cut to produce pieces of wood. In general furniture, for example, it is attached to the surface of a cabinet plate. It is also used as a material for packaging containers for gifts and the like. Furthermore, it has gained popularity for a long time as a lunch box for storing cooked food and a material for folding boxes.

  The above-mentioned pieces of wood have different thicknesses, material densities, hardnesses, and curving directions and degrees at different positions in order to cut out different tissue parts of natural wood. Because of such characteristics, it is difficult to print on the surface of a piece of wood at high speed using an automatic printing facility.

  In Japan, wood box lunch box manufacturers use traditional screen printing to print wood pieces as the material for the lunch box. However, when screen printing is performed, each time one color printing is performed, the ink must be dried and then another color must be printed. Therefore, an extremely wide space for drying is required, and the printing speed is slow and the cost is high in such a method. Furthermore, it is extremely difficult to fully grasp the accuracy when superimposing colors.

  The lunch box is of course hygienic, it is essential that it does not contain harmful substances, and it is a disposable product, so it must be low cost. Therefore, when screen printing is adopted, there are concerns not only about hygiene and harmful substances, but also for lunch boxes that are sold in units of ten thousand units a day at convenience stores, etc., mass production is required. However, it is difficult to meet such requirements.

  This invention makes it a subject to provide the structure of the lunch container material which can print the design for advertising, a line, a character, etc. at high speed.

Therefore, as a result of intensive research in light of the drawbacks found in the prior art,
A piece of wood having a fiber structure, a heat-meltable plastic layer that penetrates the fiber structure of the piece of wood, a light-transmissive continuous film material, and sandwiched between the heat-meltable plastic layer and the film layer In addition, the present invention has been completed based on such knowledge, focusing on the point that the problem can be solved by the structure of the lunch box container material including the printed design that can be seen from above the light transmissive film material. .

  This device will be specifically described below.

The structure of the lunch container material according to claim 1 is a piece of wood having a fiber structure,
A heat-meltable plastic layer that penetrates into the fiber structure of the piece of wood,
A light transmissive continuous film material,
A printed design that is sandwiched between the hot-melt plastic layer and the film layer and is visible from above the light-transmissive film material.

  The structure of the lunch box container according to claim 2 is a design in which the design in claim 1 is printed with ink that changes color in response to a change in temperature, or is a thermometer made of such ink.

  In the structure of the lunch container material according to claim 3, the film material according to claim 1 is roll paper.

  In the structure of the lunch container material according to claim 4, the hot-melt plastic layer in claim 1 is made of polyethylene.

  In the structure of the lunch container material according to claim 5, the hot melt plastic layer according to claim 1 is constituted by hot melt.

  In the structure of the lunch container material according to claim 6, the film material in claim 1 is selected from plastic materials such as OPP (Orientated Polypropy), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The

  The structure of the lunch box container material according to claim 7 has a fiber structure, a piece of wood having a first surface and a second surface, and a powder generated from the piece of wood adhered to the first surface of the piece of wood A continuous fill material that isolates the components of the wood pieces and enhances the toughness of the wood pieces, a light transmissive continuous film material with a design printed on the surface, and fibers under the second surface of the wood pieces A heat-meltable plastic layer that adheres to the second surface of the piece of wood a light transmissive continuous film material that has penetrated the tissue and printed the design.

  The structure of the lunch box material according to claim 8 is a design in which the design in claim 7 includes a design printed with the temperature ink and the design changes color in response to temperature, or a design of a thermometer. .

  In the structure of the lunch container material according to claim 9, the continuous film material according to claim 7 is roll paper.

  In the structure of the lunch container material according to claim 10, the hot-melt plastic layer in claim 7 is made of polyethylene (PE).

  In the structure of the lunch container material according to claim 11, the hot-melt plastic layer according to claim 7 is made of hot melt.

  In the structure of the lunch container material according to claim 12, the film material in claim 7 is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The

  The structure of the lunch container material according to claim 13 has a fiber structure, has a first surface and a second surface, and has a heat melting property that penetrates into the fiber structure located on the first surface and the second surface. A piece of wood comprising a plastic layer, a light transmissive continuous first film material comprising a first color printed layer that adheres to the first surface of the piece of wood via the hot melt plastic layer, and the hot melt A light transmissive continuous second film material comprising a second color printed layer that adheres to the second surface of the piece of wood through a conductive plastic layer.

  In the structure of the lunch container material according to claim 14, the first film material having continuous light transmission according to claim 13 is roll paper.

  In the structure of the lunch container material according to claim 15, the light-transmissive continuous second film material according to claim 13 is roll paper.

  In the structure of the lunch container material according to claim 16, the hot-melt plastic layer in claim 13 is made of polyethylene (PE).

  In the structure of the lunch container material according to claim 17, the hot melt plastic layer according to claim 13 is made of hot melt.

  The structure of the lunch container material according to claim 18 is such that the first light-transmissive continuous film material according to claim 13 is OPP (Oriented Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate). Or a plastic material such as polypropylene.

  The structure of the lunch container material according to claim 19 is the structure according to claim 13, wherein the second film material having continuous light transmission is OPP (Oriented Polypropyrate), polyethylene, PLA (Poly Lactic Acid), and PET (Polyethylene Terephthalate). ) Or a plastic material such as polypropylene.

  The structure of the lunch container material according to claim 20 has a fiber structure, has a first surface and a second surface, and has a heat melting property that penetrates into the fiber structure located on the first surface and the second surface. A piece of wood comprising a plastic layer and a light transmissive continuous film material having a printed design and adhering to the first surface of the piece of wood through the hot melt plastic layer.

  The structure of the lunch container material according to claim 21 is a design in which the design in claim 20 includes a design printed with temperature ink and the design changes color in response to temperature, or a design of a thermometer. .

  In the structure of the lunch container material according to claim 22, the light-transmissive continuous film material according to claim 20 is roll paper.

  In the structure of the lunch container material according to claim 23, the hot-melt plastic layer in claim 20 is made of polyethylene (PE).

  In the structure of the lunch container material according to claim 24, the hot-melt plastic layer according to claim 20 is made of hot melt.

  The structure of the lunch container material according to claim 25 is such that the continuous light-transmissive film material according to claim 20 is OPP (Oriented Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. Selected from plastic materials.

  The lunch box material according to this device has the advantage that a visual effect such as direct printing of designs, lines, characters, etc. on a piece of wood can be obtained, and printing can be performed at high speed regardless of conventional methods.

  In addition, the structure of the lunch box container according to the present invention can print a design for informing information related to a change in temperature using temperature indicating ink. Furthermore, the lunch container which imitated lacquerware can be comprised, and it has the advantage that the added value of goods can be raised by changing an aspect in this way.

  This device provides a lunch box material for manufacturing a lunch box, and is formed by joining a piece of wood 40 to a film material 30 as disclosed in FIGS.

  The film material 30 is continuous and has a first surface 31. A plurality of designs 32 are printed on the first surface 31. The film material 30 is a rolled paper or a plastic material such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The design 32 is printed on the surface with a machine.

  Further, as disclosed in FIG. 2, the first surface 31 on which the design 32 of the film material 30 is printed is covered with a hot-melt plastic layer 33. The heat-meltable plastic layer 33 is formed by bonding general polyethylene or hot melt, or adhering it by a method such as spraying or thermocompression bonding. By forming the heat-meltable plastic layer 33, an isolating action is generated, and the ink of the printed design 32 does not adhere to food in the lunch box, food stored in the lunch box, or wood chips.

  Furthermore, as disclosed in FIG. 3, the film material 30 on which the heat-meltable plastic layer 33 is formed is bonded to a piece of wood 40. The wooden piece 40 has a first surface 41 and a second surface 42, and joins the hot-melt plastic layer 33 formed on the film material 30 and the second surface 42 of the wooden piece 40.

  When the film material 30 and the wood piece 40 are thermocompression bonded, the heat-meltable plastic layer 33 on the film material 30 is melted by heat and penetrates into the fiber structure of the wood piece 40 under high pressure. Therefore, the film material 30 and the wood piece 40 are combined to form the lunch container material 43 having a composite layer structure on which the design is printed. By using this lunch box material 43, a lunch box made of wood and printed with a design can be manufactured.

  As disclosed in FIGS. 4 and 5, the lunch box material 43 according to the present invention can be cut using a mold to form the lunch box 50 and the lid 51 of the container. As described above, the lunch container material 43 having this composite layer structure includes a piece of wood 40, a heat-meltable plastic layer 33 that has penetrated into the piece of wood 40, a printed design 32, and a light-transmissive film material 30. Yeah. The printed design 32 is sandwiched between the heat-meltable plastic layer 33 and the film layer 30 and can be viewed from above the light-transmissive film material 30. In this case, a visual effect as if printed on the surface of the piece of wood 40 is obtained.

  Design 3 includes graphics, photographs, promotional characters, and the like. Design 3 may be printed with ink that changes temperature. In this case, it prints as the design which responds to temperature, or the thermometer 321. Thus, a change in the color of the ink can inform the person skilled in the art or the consumer of the approximate temperature of the lunch.

  The temperature-changing ink may be selected from three types of irreversible temperature ink, reversible temperature ink, or memory-type color ink of the memory type. Irreversible temperature ink has two types of color display and discoloration, and irreversible temperature ink has three types of color display, color disappearance and discoloration. Memory type temperature indicating ink is colorless and constant in appearance under normal temperature conditions. When the temperature rises, the color is displayed. Even if the temperature drops, the color does not disappear. When the temperature rises again to the same temperature, the color disappears. By combining these discoloration characteristics of the temperature indicating ink, temperature related information or a warning in the process of heating the lunch can be given.

  As shown in FIG. 6, by forming a continuous film layer having resistance to bending on the other surface of the wood piece 40, the components of the powdery wood pieces generated from the wood piece 40 are stored in the lunch box. While preventing it from adhering to the cooked food, the wood piece 40 can be provided with the strength required for the cutting and bending process for forming the lunch box.

  As disclosed in the local enlarged view of FIG. 7, the hot-melt plastic layer 52 is formed on the surface of the continuous film material 53. The film material 51 is made of a roll paper or a plastic material such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene, and is a film that has been wound and is heat-fusible. The plastic layer 52 is formed by bonding general polypropylene or other material having a heat melting property, or adhering to the film material 53 by a method such as spraying or thermocompression bonding.

  The wood piece 40 in the second embodiment includes a first surface 41 and a second surface 42 as in the first embodiment, and includes a hot-melt plastic layer 52 formed on the film material 53 and the second surface 42 of the wood piece 40. Join.

  When the film material 30 and the wood piece 40 are thermocompression bonded, the heat-meltable plastic layer 52 on the film material 53 is melted by heat and penetrates into the fiber structure of the first surface 41 of the wood piece 40 under high pressure. The film material 53 adheres to the first surface 41 of the piece of wood 40.

  A plurality of designs 32 are printed on the first surface of the film material 30 as in the first embodiment, and / or a design that reacts to a change in temperature with temperature indicating ink, a thermometer 321, and the like are printed.

  A first surface of the film material 30 on which a plurality of designs 32 are printed and / or a design that responds to a change in temperature with temperature indicating ink, a thermometer 321, etc. is coated with a hot-melt plastic layer 33.

  The film material 30 whose first surface is covered with the heat-meltable plastic layer 33 is superposed on the second surface 42 of the piece of wood 40 and thermocompression bonded. In this case, the hot-melt plastic layer 33 covering the first surface of the film material 30 is melted and penetrates into the fiber structure of the second surface 42 of the piece of wood 40 due to the high pressure. Therefore, the light-transmitting film material 30 and the wood piece 40 are combined to form the lunch container material 43 having a composite layer structure on which the design is printed. Using this lunch container material 43, a lunch box made of wood pieces and printed with a design can be manufactured.

  As shown in FIG. 8, a lunch box container 60 having a composite structure includes a continuous film material 51, a heat-melting plastic layer 52, a piece of wood 40, a heat-melting plastic layer 33, and a printed design 32. And a design or thermometer 321 which is printed with temperature indicating ink and responds to a change in temperature, and a light-transmissive continuous film material 30.

  As those skilled in the art are familiar with, the steps disclosed in FIG. 6 can be modified slightly. For example, if it is only intended to isolate powdered wood components generated from wood, the step 25 in FIG. 6 can be changed to prepare a heat-meltable plastic film in advance. The 26 steps can be modified to overlay the hot melt plastic film on the first surface 41 of the piece of wood 40 having the first surface 41 and the second surface 42. The 27 steps of thermocompression bonding can be changed so that the heat-meltable plastic film is thermocompression bonded to the piece of wood 40. In this case, the heat-meltable plastic film is melted and penetrates into the fiber structure of the first surface 41 of the piece of wood 40 by high pressure to form the heat-meltable plastic layer 52.

  FIG. 9 discloses a lunch container material 70 having a composite layer structure manufactured by the modified steps described above. According to the drawings, a lunch box container 70 having a composite structure on which a design is printed is composed of a hot-melt plastic layer 52, a piece of wood 40, a hot-melt plastic layer 33, a printed design 32, and a temperature indicating ink. It includes a design or thermometer 321 that is printed and responds to changes in temperature, and a continuous film material 30 that is transparent to light.

  In FIG. 10, the lunch container material 80 which has the composite structure which expressed the color of the lacquer ware is disclosed. On both surfaces of the wood piece 40, the hot-melt plastic layers 33 and 52, the first color printing layer 35 and the second color printing layer 36 are formed, respectively. Further, a continuous film material 30 that is transparent to light is bonded to both surfaces. The surface color of lacquer ware is usually red and black. By covering the heat-meltable plastic layers 33 and 52, the inks of these colors do not contact the wood piece 40. Therefore, it is not absorbed by the fiber structure of the piece of wood 40 and does not exit from the fiber structure of the piece of wood 40. The color and the texture of the piece of wood appear under the film material 30, and a feeling close to the surface of the lacquer ware is obtained.

  The lunch container material 80 having the color of the surface of the lacquer ware described above can be manufactured by the steps disclosed in FIG. That is, the first color printing layer 35 is formed on the light transmissive continuous film material 30, the second color printing layer 36 is formed on the second film material 30, and the first color printing layer 35 and the second color printing layer 35 are formed. The color printing layer 36 is coated with the heat-melting plastic layers 33 and 52, respectively, and the heat-melting plastic layers 33 and 52 are melted by thermocompression bonding and penetrated into the fiber structure of the piece of wood 40 at a high pressure. A lunch container material having a composite layer structure 80 colored on the surface is obtained.

The lunch container material according to the present invention has the following advantages over the prior art.
1. The lunch container material according to this device has a composite layer structure on which a design is printed, and is not limited by printing as seen in the prior art, and uses a large amount of wood lunch at high speed. Containers can be produced.
2. The lunch container material according to the present invention can show the temperature to the consumer by printing with the temperature indicating ink, and can show the temperature record of heating.
3. The lunch box material according to the present invention can constitute a composite layer structure in which one side is red and the other side is black, and a lunch box container having a lacquerware feel can be produced.

  The above is a preferred embodiment of the present invention, and does not limit the scope of implementation of the present invention. Accordingly, any modifications or changes that can be made by those skilled in the art, which are made within the spirit of the present invention and have an equivalent effect on the present invention, all belong to the scope of claims for registration of the utility model of the present invention. Shall.

It is the flowchart which showed the manufacturing process of the lunch container material by this invention (Example 1). It is explanatory drawing which showed the cross-section of the lunch container material by this device. It is explanatory drawing which showed the state which thermocompression-bonds a film material to the wooden piece in this device. It is explanatory drawing which showed the cover of the lunch container manufactured using the lunch container material by this device. It is explanatory drawing which showed the lunch container manufactured using the lunch container material by this device, and the lid | cover. It is the flowchart which showed the other manufacturing process of the lunch container material by this invention (Example 2). It is explanatory drawing which showed the state which thermocompression-bonds a film material to the wooden piece in other embodiment. It is explanatory drawing which showed the cross-section of the lunch container material by other embodiment. It is explanatory drawing which showed the cross-sectional structure of the lunch container material by another embodiment. It is explanatory drawing which showed the cross-sectional structure of the lunch container material resembling a lacquerware.

Explanation of symbols

DESCRIPTION OF SYMBOLS 30 Film material 31 1st surface 32 Design 321 Thermometer 33 Thermomeltable plastic layer 35 1st color printing layer 36 2nd color printing layer 40 Wood chip 41 1st surface 42 2nd surface 43 Lunch container material 50 Lunch container 51 Lid 52 Heat-melting plastic layer 53 Film material 60 Lunch container material 70 Lunch container material 80 Lunch container material

Claims (25)

A piece of wood having a fibrous structure;
A heat-meltable plastic layer that penetrates into the fiber structure of the piece of wood,
A light transmissive continuous film material,
A lunch container material comprising a printed design that is sandwiched between the heat-meltable plastic layer and the film layer and that can be seen from above the light-transmissive film material. Construction.   The structure of a lunch box container material according to claim 1, wherein the design is a design printed with ink that changes color in response to a change in temperature, or a thermometer configured with such ink.   The structure of the lunch container material according to claim 1, wherein the film material is roll paper.   The lunch box container structure according to claim 1, wherein the hot-melt plastic layer is made of polyethylene.   The lunch box container material structure according to claim 1, wherein the hot-melt plastic layer is formed of hot melt.   The lunch box container material according to claim 1, wherein the film material is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. Construction. A piece of wood having a fibrous structure and comprising a first surface and a second surface;
A continuous fill material that adheres to the first surface of the piece of wood and isolates the components of the powdered piece of wood generated from the piece of wood and enhances the toughness of the piece of wood;
A light transmissive continuous film material with a design printed on the surface;
A heat-meltable plastic layer for adhering to the second surface of the piece of wood a light transmissive continuous film material that has penetrated into the fiber structure under the second surface of the piece of wood and printed the design. Lunch container material structure.   8. The structure of a lunch box container material according to claim 7, wherein the design includes a design printed with temperature ink, and the design is a design that changes color in response to temperature or a design of a thermometer. .   The lunch box container structure according to claim 7, wherein the continuous film material is roll paper.   The structure of the lunch container material according to claim 7, wherein the heat-meltable plastic layer is made of polyethylene (PE).   The lunch box container structure according to claim 7, wherein the heat-meltable plastic layer is made of hot melt.   The lunch box container material according to claim 7, wherein the film material is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. Construction. A piece of wood having a fibrous structure, comprising a hot melt plastic layer comprising a first surface and a second surface and penetrating into the fibrous structure located on the first surface and the second surface;
A light transmissive continuous first film material comprising a first color printed layer that adheres to the first surface of the piece of wood via the hot melt plastic layer;
And a light transmissive continuous second film material comprising a second color printing layer that adheres to the second surface of the wood piece through the hot melt plastic layer. Structure.   The structure of the lunch container material according to claim 13, wherein the light-transmissive continuous first film material is roll paper.   The structure of the lunch container material according to claim 13, wherein the light-transmissive continuous second film material is roll paper.   The structure of the lunch container material according to claim 13, wherein the heat-meltable plastic layer is made of polyethylene (PE).   The lunch box container material structure according to claim 13, wherein the hot-melt plastic layer is made of hot melt.   The light-transmissive continuous first film material is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The structure of the lunch container material according to claim 13.   The light-transmissive continuous second film material is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The structure of the lunch container material according to claim 13. A piece of wood having a fibrous structure, comprising a hot melt plastic layer comprising a first surface and a second surface and penetrating into the fibrous structure located on the first surface and the second surface;
And a light-transmitting continuous film material that has a printed design and adheres to the first surface of the piece of wood through the hot-melt plastic layer.   21. The structure of a lunch box container material according to claim 20, wherein the design includes a design printed with temperature ink, and the design is a design that changes color in response to temperature or a design of a thermometer. .   21. The structure of a lunch box material according to claim 20, wherein the light transmissive continuous film material is a roll paper.   The lunch box container material structure according to claim 20, wherein the heat-meltable plastic layer is made of polyethylene (PE).   The lunch box container material structure according to claim 20, wherein the hot-melt plastic layer is made of hot melt.   21. The light transmissive continuous film material is selected from plastic materials such as OPP (Orientated Polypropyrate), polyethylene, PLA (Poly Lactic Acid), PET (Polyethylene Terephthalate), or polypropylene. The structure of the lunch box material described in 1.

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