TW201615519A - Method for manufacturing thermal insulation paper container - Google Patents

Abstract

Disclosed is a method for manufacturing a thermal insulation paper container, which includes providing a paper board having a perimeter formed thereon a plurality of joint sections; then locally coating a thermal insulation material embedded with hollow bodies on at least one surface of the paper board while avoiding each of the joint sections; and folding the paper board into a container and heating the container such that the thermal insulation material embedded with hollow bodies is attached to at least one surface of the container so as to provide a thermal insulation layer on at least one surface of the container. The heat insulation layer has a thermal insulation coefficient between 0.003-0.05. The thermal insulation material is selected from polyurethane (PU), acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA), and epoxy resin. As a result, the thermal insulation layer embedded with hollow bodies provides the advantages of reducing the size of the container, lowering down transportation cost, and showing better thermal insulation property.

Description

Method for manufacturing insulated paper container

The present invention relates to a method for manufacturing an insulated paper container, and more particularly to an effect of using a heat insulating layer containing a hollow body to reduce the volume of the container, reduce the transportation cost, and better the heat insulating effect.

According to the paper, the paper containers which are relatively simple to use are usually not subjected to any surface treatment process, and only a single layer of paper is bonded to the shape of a paper cup, a paper bowl or a paper tray. Although the production is simple and the cost is low, only a single layer of paper is used. The material has a poorer heat insulation effect, so when it is used for high-temperature beverages, it has no heat insulation effect and is prone to burn accidents.

Therefore, several forms of insulated containers have been commercially proposed for holding hot liquids. An example of a heat insulating material heat insulating container is an example. The heat-insulating material insulated container used in the manufacture is coated with a material such as polypropylene (PP) or polyethylene (PE) as a heat insulating material on the surface of the container, and then the container and the heat insulating material are simultaneously baked. A material such as polypropylene or polyethylene is formed on the surface of the container to form a heat insulating layer. However, in the above-mentioned conventional use of polypropylene or polyethylene as the heat insulating material, since polypropylene or polyethylene is only a simple plastic material, when polypropylene or polyethylene is baked and heated, there is often a gap. The case of poor thermal effect occurs, and when the baking temperature is heated to 120 ° C, the polypropylene material is liable to fall off, and the polyethylene is damaged, so that the heat insulating material of polypropylene or polyethylene is formed. After the insulation layer, there are usually defects such as thinner thickness and poor heat insulation effect; and the outer edge of the container after the baking process is filled with gas. Holes or irregular bumps are the disadvantages of the pattern or its color being blurred or difficult to print.

Another type of insulated paper container is such that the outer side wall of the body member is completely surrounded by a sleeve of corrugated cardboard. However, the procedure for making such a container involves the additional steps of forming the corrugated sleeve and adhering it to the outer surface of the side wall of the body member, thus having many other disadvantages. First, text, graphics, or other symbols are printed on the surface of the wrinkle, and the resulting deformed text or pattern does not have a good aesthetic for the consumer. Secondly, the sleeve is adhered to the side wall of the body member by a method in which only the raised ridges are in contact with the side walls, but the weak side walls are easy to separate the two. Moreover, the structure has a plurality of raised ridges on the sleeve, and a plurality of annular flanges are manufactured in the manufacturing process, which is not only complicated in structure but also high in cost. Furthermore, the container having the sleeve of the embossed wrinkles is not suitable for stacking, so that a large storage space is required, resulting in an increase in the cost of packaging and shipping. In addition, if they are forcibly stacked on each other in order to reduce their space volume during transportation, the sleeve subjected to extrusion will compress the heat insulating space formed by the ridges, thereby affecting the heat insulating effect of the container.

In view of this, the existing insulated container has the advantages of poor heat insulation effect, low printability, large volume, and high transportation cost; therefore, the general practitioner cannot meet the needs of the user in actual use.

The main object of the present invention is to overcome the above problems encountered in the prior art and to provide a function of utilizing the insulating layer containing the hollow body to reduce the volume of the container, reduce the transportation cost, and better the heat insulating effect. A method of manufacturing a thermal paper container.

For the above purposes, the present invention is a method of manufacturing an insulated paper container, which is at least The method comprises the following steps: (A1) providing a paperboard having a plurality of seams at a periphery thereof; and (B1) partially applying a heat insulating material containing a hollow body to at least one surface of the paperboard and avoiding each seam Thereafter, the paperboard is folded into a container, and the container is heated to adhere the insulating material containing the hollow body to at least one surface of the container, thereby providing a partition on at least one surface of the container a thermal layer selected from the group consisting of polyurethane (PU), acrylic resin, polyethylene (Polyethylehe, PE), polypropylene (Polypropylehe, PP), polylactide (PLA) or epoxy resin. (Epoxy) and so on.

In the above embodiment of the invention, the container is a paper cup, a paper tray or a paper lunch box.

In the above embodiment of the invention, the insulating layer is applied to the outer surface of the container.

In the above embodiment of the invention, the insulating layer is applied to the inner side surface of the container.

In the above embodiment of the invention, the insulating layer is applied to the outer and inner surfaces of the container.

In the above embodiment of the invention, the hollow body has a particle size of between 10 and 350 μm.

In the above embodiment of the present invention, the thermal insulation coefficient of the hollow body of the heat insulation layer is between 0.003 and 0.05.

In the above embodiment of the invention, the hollow system is a Hollow Glass Bead, a ceramic hollow body or a plastic hollow body.

In the above embodiment of the invention, the hollow system is vacuum or non-vacuum.

In the above embodiment of the present invention, further including coating a protective layer on the heat insulating layer The layer is made of a material selected from the group consisting of polyurethane, acrylic resin, polyethylene, polypropylene, polylactic acid or epoxy resin.

In the above embodiment of the present invention, the insulating material containing the hollow body is formed by injection molding, extrusion molding, extrusion molding, lamination molding, vacuum molding, rotational molding, printing or coating. At least one surface of the container is coated with a heat insulating layer.

In addition, the method for manufacturing an insulated paper container of the present invention comprises at least the following steps: (A2) providing a paperboard having a plurality of seams at a periphery thereof, and the paperboard is a heat insulating material containing a hollow body, and The hollow system avoids each seam; and (B2) folds the paperboard into a container and applies a protective layer to at least one surface of the container.

In the above embodiment of the invention, the material of the protective layer is selected from the group consisting of polyurethane, acrylic resin, polyethylene, polypropylene, polylactic acid or epoxy resin.

In the above embodiment of the present invention, the protective layer is partially applied to the surface of the container and avoids the joints by the heat insulating material containing the hollow body, and the heat insulating material is selected from the group consisting of polyurethane and acrylic resin. , polyethylene, polypropylene, polylactic acid or epoxy resin.

In the above embodiment of the invention, the container is a paper cup, a paper tray or a paper lunch box.

In the above embodiment of the invention, the hollow body has a particle size of between 10 and 350 μm.

In the above embodiment of the invention, the insulation coefficient of the container is between 0.003 and 0.05.

In the above embodiment of the invention, the hollow system is a glass hollow body, a ceramic hollow body or a plastic hollow body.

In the above embodiment of the invention, the hollow system is vacuum or non-vacuum.

In the above embodiment of the invention, the protective layer is applied to the outside or/and the inside surface of the container.

1‧‧‧ container

10‧‧‧ cup body

11‧‧‧ cardboard

12, 13, 15‧‧‧ seams

13a‧‧‧Cup

14‧‧‧ cup bottom

2‧‧‧Insulation

21‧‧‧Insulation materials

22‧‧‧ hollow body

3‧‧‧Protective layer

4‧‧‧ Container

40‧‧‧ cup body

41‧‧‧ cardboard

42, 43‧‧‧ seams

43a‧‧‧Fang

44‧‧‧ hollow body

45‧‧‧ cup bottom

5‧‧‧protective layer

51‧‧‧Insulation materials

52‧‧‧ hollow body

S11~S12‧‧‧Steps

S21~S22‧‧‧Steps

Fig. 1 is a schematic view showing the manufacturing process of the first embodiment of the present invention.

Fig. 2 is a schematic view showing a specific structure of a cardboard coating heat insulating layer according to a first embodiment of the present invention.

Fig. 3 is a schematic view showing the specific structure of the cup body of the first embodiment of the present invention.

Fig. 4 is a schematic view showing the specific structure of the appearance of the first embodiment of the present invention.

Fig. 5 is a schematic view showing the specific structure of the cross section of the first embodiment of the present invention.

Fig. 6 is a schematic view showing the specific structure of the cardboard coating heat insulation layer of the first embodiment of the present invention.

Figure 7 is a schematic view showing the second embodiment of the cross-sectional structure of the first embodiment of the present invention.

Fig. 8 is a cross-sectional specific structure 3 of the first embodiment of the present invention.

Figure 9 is a schematic view showing the manufacturing process of the second embodiment of the present invention.

Figure 10 is a schematic view showing a specific structure of a cardboard coating heat insulating layer according to a second embodiment of the present invention.

Figure 11 is a schematic view showing a specific structure of a cross section of a second embodiment of the present invention.

Fig. 12 is a schematic view showing the second embodiment of the cross section.

Please refer to FIG. 1 to FIG. 5 , which are schematic diagrams of a manufacturing process according to a first embodiment of the present invention, and a schematic diagram of a specific structure of a cardboard coating heat insulation layer according to a first embodiment of the present invention. A schematic view of a specific structure of a cup body according to an embodiment, a schematic view of a specific structure of the first embodiment of the present invention, and a schematic view of a cross-sectional specific structure of the first embodiment of the present invention. As shown in the figure: the present invention is a method for manufacturing an insulated paper container. In step S11, a paperboard 11 is provided, the periphery of which has a plurality of seams 12, 13; and then in step S12, a hollow body 22 is contained therein. After the heat insulating material 21 is partially coated on at least one surface of the paperboard 11 and avoids the seams 12 and 13, the paperboard 11 is folded into a container 1, and the container 1 is heated to make the inner portion The heat insulating material 21 of the hollow body 22 is attached to at least one surface of the container 1 to provide a heat insulating layer 2 on at least one surface of the container 1 with a thermal insulation coefficient of between 0.003 and 0.05. The heat insulating material 21 is selected from the group consisting of polyurethane (PU), acrylic resin, polyethylene (PE), polypropylene (PP), polylactide (PLA) or epoxy resin (Epoxy). And the hollow body 22 is a Hollow Glass Bead having a particle size of between 10 and 350 μm, a ceramic hollow body or a plastic hollow body, and the hollow body may be vacuum or non-vacuum. If so, a new method of manufacturing an insulated paper container is constructed by the above process.

The heat insulating paper container is composed of the container 1 and the heat insulating layer 2, and a protective layer 3 may be further coated on the heat insulating layer 2, and the material thereof is selected from the group consisting of polyurethane, acrylic resin, polyethylene, Polypropylene, polylactic acid or epoxy resin, etc., and the container 1 is In the case of a paper cup, a paper tray or a paper lunch box, the container 1 of the present invention is a paper cup as an embodiment.

When the present invention is folded and formed, the side end seam 12 of the paperboard 11 and the inner edge of the other side end are combined to form a body 10, and the seam 13 is located at the upper end of the cup body 10, After the paperboard 11 is combined to form the cup body 10, the upper end seam portion 13 of the cup body 10 is wound downwardly into a curling edge, and the press-fit type is a flat cup edge 13a, and then the lower end of the cup body 10 is inside. The edge is combined with a cup bottom 14 to form the container 1. At the time of production, at least one side of the container 1 is formed by injection molding, extrusion molding, extrusion molding, lamination molding, vacuum molding, rotational molding, printing or coating (this embodiment is the outer side). The heat insulating material 21 containing the hollow body 22 is partially coated on the surface, and then heated or coated with a surface treatment agent (Primer) to adhere the heat insulating material 21 containing the hollow body 22 to the outer surface of the container 1. Therefore, the heat insulating material 21 containing the hollow body 22 is heated to form a heat insulating layer 2 on the outer side surface of the container 1, and finally the protective layer is further coated on the heat insulating layer 2. 3. Thereby, the effect of reducing the volume, reducing the transportation cost, and better the heat insulation effect can be achieved.

Please refer to FIG. 6 and FIG. 7 , which are respectively a schematic diagram of a specific structure of the cardboard coating heat insulation layer according to the first embodiment of the present invention, and a schematic diagram of a cross-sectional specific structure of the first embodiment of the present invention. As shown in the figure, the present invention may be in the form of a specific structure according to the specific structure of the first embodiment, and the difference is that the container 1 is formed by folding the cardboard 11 . The periphery of the paperboard 11 has a plurality of seams 12, 13, 15 which can be disposed on the inner side surface of the container 1 in a manner as described in the first embodiment and avoid the seams 12, 13,15.

When the folding is formed, the side end seam 12 of the paperboard 11 and the outer edge of the other side end are combined to form a body 10, and the seam 13 is located at the upper end of the cup body 10, and the cardboard 11 is to be After forming the cup body 10, the upper end seam portion 13 of the cup body 10 is wound down into a curling edge, and the press-fit type is a flat cup edge 13a, and then the seam of the lower end of the cup body 10 is 15 is combined with a cup bottom 14 to form the container 1. At the time of production, on at least one side (the inner side surface of the present embodiment) of the container 1 by injection molding, extrusion molding, extrusion molding, lamination molding, vacuum molding, rotational molding, printing or coating. The heat insulating material 21 containing the hollow body 22 is partially coated, and then heated or coated with a surface treatment agent to adhere the heat insulating material 21 containing the hollow body 22 to the inner surface of the container 1 so that After the heat insulating material 21 containing the hollow body 22 is heated, a heat insulating layer 2 is formed on the inner side surface of the container 1, and finally the protective layer 3 is further coated on the heat insulating layer 2. Thereby, the effect of reducing the volume, reducing the transportation cost, and better the heat insulation effect can be achieved.

Please refer to FIG. 8 , which is a schematic view of a three-dimensional structure of a first embodiment of the present invention. As shown in the figure, the present invention may be in addition to the specific structure of the first embodiment described above, or may be the third configuration of the specific structure, and the difference is that the thermal insulation layer 2 can utilize the above-mentioned The specific structure of the first embodiment and the second embodiment are provided on the outer and inner surfaces of the container 1, so as to achieve the same functions as the specific structures one and two of the first embodiment, and further, the present invention can be made to be practical. Required when using.

Please refer to FIG. 9 to FIG. 11 for a schematic diagram of a manufacturing process according to a second embodiment of the present invention, a schematic diagram of a specific structure of a cardboard coating heat insulation layer according to a second embodiment of the present invention, and the present invention. A schematic view of a cross-sectional specific structure of the second embodiment. As shown in the figure, the present invention may be the structural form of the second embodiment in addition to the configuration of the first embodiment, and the difference is that the peripheral edge provided in step S21 has a plurality of The cardboard 41 of the joints 42, 43 may also be a heat insulating material containing the hollow body 44, and the hollow body 44 avoids the joints 42, 43; then the paperboard 41 is folded and formed in step S22. A container 4 is coated with a protective layer 5 on at least one surface of the container 4.

When the present invention is folded and formed, the side end seam 42 of the paperboard 41 and the inner edge of the other side end are combined to form a cup 40, and the seam 43 is located at the upper end of the cup body 40, After the paperboard 41 is combined to form the cup body 40, the upper end seam portion 43 of the cup body 40 is wound downwardly into a curling edge, and then pressed and folded into a flat cup edge 43a, and then at the lower end of the cup body 40. The inner edge and the bottom of the cup 45 form the container 4. When the film is produced, the protective layer 5 is coated on at least one side of the container 4 containing the hollow body 44 (the outer surface of the embodiment), and the material of the protective layer 5 is selected from the group consisting of polyurethane and acrylic resin. Polyethylene, polypropylene, polylactic acid or epoxy resin is attached to the outer surface of the container 4 containing the hollow body 44. In this way, in addition to the functions mentioned in the first embodiment, the requirements for practical use can be met. In addition, the protective layer 5 of the present invention may be disposed on the inner surface of the container 4 or on the outer and inner surfaces of the container 4, depending on the needs of the user.

Please refer to FIG. 12, which is a schematic cross-sectional view of a second embodiment of the present invention. As shown in the figure, the present invention may be in the form of a specific structure according to the specific structure of the second embodiment, and the difference is that the protective layer 5 is provided with a hollow body. The heat insulating material 51 of 52 is partially applied to the surface of the container 4 and avoids the joints 42, 43, and the heat insulating material 51 is selected from polyurethane, acrylic resin, polyethylene, polypropylene, polylactic acid or Epoxy tree Fat and so on. In this way, in addition to the functions of the first embodiment and the specific structure of the second embodiment, the requirements for practical use can be met.

In summary, the present invention is a method for manufacturing an insulated paper container, which can effectively improve various disadvantages of the conventional use, and can utilize the heat insulating layer containing the hollow body to reduce the volume of the container, reduce the transportation cost, and heat insulation effect. The better effect, in turn, makes the invention more progressive, more practical, and more in line with the needs of the user, and has indeed met the requirements of the new patent application, and has filed a patent application according to law.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the novel specification All should remain within the scope of the invention patent.

1‧‧‧ container

10‧‧‧ cup body

13a‧‧‧Cup

14‧‧‧ cup bottom

2‧‧‧Insulation

21‧‧‧Insulation materials

22‧‧‧ hollow body

3‧‧‧Protective layer

Claims (20)

A method for manufacturing an insulated paper container, comprising at least the following steps: (A1) providing a paperboard having a plurality of seams at a periphery thereof; and (B1) partially coating the paperboard with a heat insulating material containing a hollow body After at least one surface and avoiding the joints, the paperboard is folded into a container, and the container is heated to adhere the insulating material containing the hollow body to at least one surface of the container. Providing a heat insulating layer on at least one surface of the container, and the heat insulating material is selected from the group consisting of polyurethane (PU), acrylic resin, polyethylene (PE), polypropylene (PP), Six kinds of polylactic acid (Polylactide, PLA) or epoxy resin (Epoxy). The method for producing an insulated paper container according to the first aspect of the invention, wherein the container is a paper cup, a paper tray or a paper lunch box. The method for producing an insulated paper container according to the above aspect of the invention, wherein the heat insulating layer is applied to an outer surface of the container. The method for producing an insulated paper container according to the above aspect of the invention, wherein the heat insulating layer is applied to an inner surface of the container. The method for producing an insulated paper container according to claim 1, wherein the heat insulating layer is applied to the outer and inner surfaces of the container. The method for producing an insulated paper container according to the above aspect of the invention, wherein the hollow body has a particle diameter of between 10 and 350 μm. The method for manufacturing an insulated paper container according to the first aspect of the invention, wherein the heat insulating layer hollow body has a thermal insulation coefficient of between 0.003 and 0.05. The method for producing an insulated paper container according to the above aspect of the invention, wherein the hollow system is a Hollow Glass Bead, a ceramic hollow body or a plastic hollow body. The method for producing an insulated paper container according to the above aspect of the invention, wherein the hollow system is vacuum or non-vacuum. The method for manufacturing an insulated paper container according to claim 1, further comprising coating a protective layer on the heat insulating layer, the material selected from the group consisting of polyurethane, acrylic resin, polyethylene, and polypropylene. Six kinds of polylactic acid or epoxy resin. The method for manufacturing an insulated paper container according to the first aspect of the invention, wherein the insulating material containing the hollow body is formed by injection molding, extrusion molding, extrusion molding, lamination molding, vacuum molding, and rotation. A method of forming, printing or coating is applied to at least one surface of the container with a heat insulating layer. A method for manufacturing an insulated paper container, comprising at least the following steps: (A2) providing a paperboard having a plurality of seams at a periphery thereof, and the paperboard is a heat insulating material containing a hollow body, and the hollow system avoids And (B2) folding the paperboard into a container and coating a protective layer on at least one surface of the container. The method for manufacturing an insulated paper container according to claim 12, wherein the material of the protective layer is selected from the group consisting of polyurethane, acrylic resin, polyethylene, polypropylene, polylactic acid or epoxy resin. . The method for manufacturing an insulated paper container according to claim 12, wherein the protective layer is partially coated on the surface of the container with a heat insulating material containing a hollow body, and the joint is avoided. The heat insulating material is selected from the group consisting of polyurethane, acrylic resin, polyethylene, polypropylene, polylactic acid or epoxy resin. The method for manufacturing an insulated paper container according to claim 12, wherein The container is a paper cup, a paper tray or a paper lunch box. The method for producing an insulated paper container according to claim 12, wherein the hollow body has a particle diameter of between 10 and 350 μm. The method for manufacturing an insulated paper container according to claim 12, wherein the heat insulating coefficient of the container is between 0.003 and 0.05. The method for producing an insulated paper container according to claim 12, wherein the hollow system is a glass hollow body, a ceramic hollow body or a plastic hollow body. The method for producing an insulated paper container according to claim 12, wherein the hollow system is vacuum or non-vacuum. The method for producing an insulated paper container according to claim 12, wherein the protective layer is applied to the outer side or/and the inner side surface of the container.