JPH0665211U - A container with excellent heat insulation and cushioning - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To obtain a container with excellent heat insulation and cushioning properties that does not adversely affect the environment as waste and is easy to manufacture. [Structure] The surface of a coated cardboard was subjected to predetermined printing and varnishing, and pressure embossing was performed so that all the uneven portions were alternately arranged in a checkered pattern in both vertical and horizontal directions. This is punched out in a fan shape, and the embossed protrusion E on the side opposite to the printed surface,
Polyvinyl acetate was applied to the whole E'and adhered to the side surface of the conical paper container 2 to obtain a container having excellent heat insulating properties and buffering properties.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a container having excellent heat insulating properties and cushioning properties, which is used as a container for instant noodles, for example.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, containers having excellent heat insulation properties include, for example, expanded plastic containers such as expanded polystyrene, which are used in large quantities as containers for instant noodles and the like. This container has excellent heat insulating properties, cushioning properties, and moldability, but it has the drawback of emitting high temperatures when incinerating used containers as waste and damaging the incinerator. There is a problem.

Further, a corrugated container using a stepped paper, such as that proposed in Japanese Utility Model Laid-Open No. 4-45215, is excellent as a paper container because it does not have the above-mentioned drawbacks, but a stepped paper and an internal container. Is said to be line-bonded, so the heat insulation is not sufficient, the cushioning property is not sufficient, and it is difficult to process (a container with a cylindrical structure can be easily processed, but it is difficult to process a container with a conical structure as shown in Fig. 1). There is a problem.

[0004]

[Problems to be solved by the device]

 The present invention aims to solve these drawbacks. In other words, it is an object to obtain a container that does not have an adverse effect on the environment when it is treated as waste, is easy to manufacture, and has excellent heat insulating properties and cushioning properties.

[0005]

[Means for Solving the Problems]

 The present invention will be described with reference to the drawings. FIG. 1 is a front view showing a partially cutaway view of the container of the present invention having excellent heat insulating properties and cushioning properties. FIG. 2 is a partially enlarged sectional view of the side surface of the container of FIG. The gist of the present invention is that a paper 1 which is pressure-embossed so that all the uneven portions are alternately arranged in a checkered pattern in any of vertical and horizontal directions, and a convex portion E ′ of the embossing is used to interpose an adhesive B. The purpose is to obtain a container excellent in heat insulation and cushioning by adhering it to the side surface of the paper container 2.

The pressure-embossed paper 1 (hereinafter simply referred to as embossed paper) is manufactured in the following manner so that all the concave and convex portions are alternately arranged in a checkered pattern in both vertical and horizontal directions. First, white liner, coated cardboard, such as bleached kraft paper, usually a basis weight 120~3 50g / m ^2, preferably prepared 230 g / m ² before and after the paper. It is also possible to print the product name and notes on the surface in advance. If necessary, the printed surface may be further subjected to varnishing and the like.

To apply pressure embossing to this paper so that all the uneven portions are alternately arranged in a checkered pattern in both the vertical and horizontal directions, for example, all the uneven portions are checkered in the vertical and horizontal directions. The two embossing rolls as shown in 1 above are driven to be meshed with each other, and the paper is passed between them to perform the pressure embossing process. FIG. 3 is a partial plan view of the embossed paper thus manufactured, and FIG. 4 is an enlarged vertical side view taken along the line AA of FIG. E and E'represent the embossed protrusions. The interval between the convex portion of the emboss and the adjacent convex portion is usually 3 to 20 mm, preferably 5 to 10 mm. The length and width of the paper may be the same or different. Further, the height of the peak of the convex portion is usually 0.5 to 3 mm from the center line C-C, preferably about 1 mm.

A paper container is usually manufactured from cup base paper, high-quality paper, bleached kraft paper, Kent paper, etc., which has a basis weight of 150 to 250 g / m ² , preferably around 200 g / m ² and is provided with hot water resistance. When these papers lack hot water resistance, a thermoplastic resin such as polyethylene or polypropylene may be applied by an extrusion coating having a thickness of 20 to 50 μm, preferably about 30 μm, in order to impart hot water resistance. Then, the container is manufactured according to a conventional method. An example will be described below.

The embossed paper 1 is punched out into a predetermined mold (for example, a fan shape), and all or part of the convex portion E ′ on the surface opposite to the printed surface of the embossed paper is usually starch or polyvinyl acetate-based water. A system adhesive is applied and adhered to the side surface of the paper container 2.

A cylinder in which both ends of embossed paper punched out in a predetermined mold are adhered is manufactured in advance, an adhesive is applied to the outer peripheral surface of a paper container in whole or in part, and the container is inserted into this cylinder.

An adhesive is applied to the outer peripheral surface of a paper container in whole or in part, and the embossed paper punched into a predetermined mold is bonded.

By the method described above, the container excellent in heat insulating property and shock absorbing property of the present invention is completed.

[0013]

【Example】

Example. 1 The surface of coated cardboard having a basis weight of 250 g / m ² was subjected to predetermined printing and varnishing, and pressure embossing was applied so that all the uneven portions were alternately arranged in a vertical and horizontal direction in a checkered pattern ( The distance between the convex portions is 5 mm in length, 9 mm in width, and 1.0 mm in height). This was punched out into a fan shape and polyvinyl acetate was applied to all the embossed convex parts on the side opposite to the printed surface, and it was adhered to the side surface of a cone-shaped paper container to obtain a container with excellent heat insulation and cushioning properties. It was

Example. 220g / m ² of pigment coating layer is provided on the surface of bleached kraft paper with a basis weight of 230g / m ² , and the coated surface is subjected to predetermined printing, and then all the irregularities are in a checkered pattern in either the vertical or horizontal direction. Also, pressure embossing treatment was performed so as to alternate with each other (the interval between the convex portions was 5 mm in length, 9 mm in width, and 1.0 mm in height). This was punched out into a fan shape and both ends were bonded to manufacture a cylinder. Then, an adhesive was partially coated in a strip shape on the outer peripheral surface of the paper container, and the container was inserted into the cylinder to bond the embossed convex portion and the container to obtain a container having excellent heat insulating properties and cushioning properties.

[0015]

[Effects of the Invention] As described above, the container of the present invention having excellent heat insulating properties and cushioning properties is constructed, and has the following advantages. 1. Compared to a foamed plastic heat-insulating container, the amount of heat generated when incinerated as waste is small and there is no risk of damaging the incinerator. 2. Even if it is landfilled, it decomposes in a shorter time than a foamed plastic heat insulating container. 3. Excellent heat insulation compared to corrugated containers that use corrugated sheets. This is because the embossed paper and the container are adhered to each other only through the embossed convex portions (point adhesion), so the amount of heat conduction per unit area is small. Since the corrugated container has a straight convex portion, and the adhesive is applied to this convex portion (line bonding), the amount of heat conduction increases. This leads to the advantages that it takes less time to eat the food, the food inside the container is hard to cool, and it is not hot to hold by hand. 4. Excellent cushioning. 5. Easy to process. Although a corrugated container can easily have a cylindrical structure, it is difficult to process it in the case of a conical container as shown in FIG. This is because the linear steps are formed in parallel, and the steps are narrowed near the bottom of the container, causing a force to spread outward. Since the container of the present invention is embossed in a checkered pattern in alternating vertical and horizontal directions, it can be bent easily, and a conical container can also be easily processed. .

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a container having excellent heat insulating properties and cushioning properties according to the present invention.

FIG. 2 is a partially enlarged cross-sectional view of a side surface D of the container shown in FIG.

FIG. 3 is a partial plan view of a paper sheet that has been pressure-embossed so that all the concave and convex portions are alternately arranged in a checkered pattern in both vertical and horizontal directions.

FIG. 4 is an enlarged vertical side view taken along the line AA of FIG.

[Explanation of symbols]

1 Paper that has been embossed under pressure so that all uneven parts are alternately arranged in a checkered pattern in both vertical and horizontal directions 2 Container made of paper B Adhesive D Sectional side of container E Embossed protrusion E'Embossed protrusion Department

Claims (1)

[Scope of utility model registration request] 1. A paper 1 embossed under pressure so that all concave and convex portions are alternately arranged in a checkered pattern in both vertical and horizontal directions.
Paper container 2 with adhesive B at embossed convex portion E '
A container with excellent heat insulation and cushioning properties, characterized by being adhered to the side surface of the container.