JP2593182Y2 - Paper liquid container - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper container having a light-shielding property for protecting stored contents from light rays such as sunlight.

[0002]

2. Description of the Related Art Conventionally, paper containers for storing contents such as milk, soft drinks, alcohol, orange juice and the like are known. In general, paper containers made of laminated materials of paper and low-density polyethylene film, which are used for storing milk and soft drinks, etc., have good incineration properties, but have poor light-shielding properties. It was unsuitable for storing things. In addition, containers made of laminated aluminum sheets for storing sake and orange juice have excellent light-shielding properties, but the aluminum sheets do not burn even if they are thin, so they damage the incinerator. was there.

[0003]

The object of the present invention is to provide a paper container which is excellent in light-shielding properties and can be easily incinerated.

[0004]

Means for Solving the Problems To solve the above-mentioned problems, a means adopted by the present invention is to use a laminate of paper and a colored resin layer as a base material, and coat both sides of the base material with resin layers. It is characterized by being made of a material as described above.

[0005]

The paper container of the present invention is made of a material in which a laminate of paper and a resin layer colored preferably with carbon black is used as a base material, and a resin layer is laminated on both sides of the base material. It has excellent light shielding properties and good incineration properties.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a paper container according to the present invention, which is formed in the form of a milk pack for storing milk. However, the present invention is not limited to such milk packs, but milk, soft drinks, alcohol, juices, shampoos, rinses, hair soaps such as liquid soaps,
It is suitable for storing various liquids such as detergents and cosmetics, particularly contents requiring light-shielding properties, and the shape, structure, or pouring means is appropriately selected according to the contents to be stored.

As shown in FIG. 2, a paper container according to the present invention comprises a paper (1) and a resin layer (2) colored with carbon black.
And a resin layer (3) (4) on both sides of the substrate.
Characterized by being made of a material covered and laminated with a.

[0008] Resin layer colored with carbon black (2)
Is preferably low-density polyethylene or high-density polyethylene, and is mixed with 0.5% to 3%, most preferably 3% of carbon black, and is colored black. The resin layer (2) containing carbon black preferably has a thickness of 20 μ or more. A container using a substrate on which high-density polyethylene is laminated has excellent moisture permeation resistance. still,
Preferably, the high density polyethylene has a density of 0.935 grams per cubic centimeter or greater.

The resin layers (3) and (4) covering both sides of the substrate are:
High-density polyethylene, low-density polyethylene, polyethylene terephthalate, linear low-density polyethylene, Surlyn resin and the like are suitable, but not limited thereto.

The paper container of the present invention is a laminate comprising paper (1), a resin layer (2) colored with carbon black as a base material, and both surfaces of the base material covered with resin layers (3) and (4). However, it may be a laminate in which another resin layer is further interposed between any one of the layers (1), (2), (3) and (4) or all the layers. A resin layer (2) constituting the base material and a resin layer (3) (4) coated on both sides of the base material or at least one of the layers (1) (2) (3) (4) The resin layer to be inserted is preferably laminated in the form of a film, but is not limited thereto, and it is a matter of course that the resin layer may be laminated by an extrusion lamination method or another method or means. The resin layer interposed and laminated between at least any one of the above-mentioned layers may be any of the above-mentioned resins, and a single or a plurality of these resins are used.

Specific examples of the material applied to the paper container of the present invention will be described below. Example 1 The following layers are sequentially laminated from a position outside the container. Low-density polyethylene 20μ Paper Low-density polyethylene 20μ Colored high-density polyethylene 20μ (comprising 3% carbon black) Polyethylene terephthalate 12μ Polyethylene terephthalate 60μ

The high-density polyethylene and polyethylene terephthalate and the two polyethylene terephthalate layers are joined together with an adhesive.

Example 2 The following layers are sequentially laminated from the position outside the container. Low-density polyethylene 20μ paper Low-density polyethylene 20μ Colored low-density polyethylene 40μ (comprising 3% carbon black) Low-density polyethylene 60μ

Embodiment 3 The following layers are sequentially laminated from a position outside the container. Low-density polyethylene 20μ Paper Low-density polyethylene 20μ Colored low-density polyethylene 40μ (comprising 3% carbon black) Low-density polyethylene 15μ Polyethylene terephthalate 12μ Polyethylene terephthalate 60μ Low-density polyethylene and polyethylene terephthalate and double-layer polyethylene terephthalate layers adhere to each other Joined with the agent.

Example 4 The following layers are sequentially laminated from a position outside the container. Low-density polyethylene 20μ paper Low-density polyethylene 15μ Colored low-density polyethylene 40μ (comprising 3% carbon black) Low-density polyethylene 15μ High-density polyethylene 20μ polyethylene terephthalate 12μ polyethylene terephthalate 60μ High-density polyethylene and polyethylene terephthalate and two-layer polyethylene terephthalate The layers are glued together.

As described above, any of the materials of Examples 1 to 4 had a light transmittance of 0% in visible light (400 to 800 nanometers), and exhibited extremely excellent light-shielding properties.

[Brief description of the drawings]

 Fig. 1 Perspective view of the paper container according to the present invention Fig. 2 Cross-sectional view of the material

[Explanation of symbols]

 (1) paper (2) colored resin layer (3) resin layer (4) resin layer

Claims (2)

(57) [Scope of request for utility model registration] 1. A paper container for storing a liquid, comprising:
A base material is a laminate of paper and a resin layer that is colored black and has a light-shielding property by being blended with 0.5 to 3% of carbon black ,
A paper-made liquid container comprising a sheet-like material in which both surfaces of the substrate are covered with a resin layer. 2. The paper-made liquid container according to claim 1, further comprising a resin layer interposed between at least one of the paper, the colored resin layer, and the resin layer covering both surfaces of the substrate. br /> container.