KR20180131052A

KR20180131052A - Method of manufacturing the paperboard container witha transparent window

Info

Publication number: KR20180131052A
Application number: KR1020170067563A
Authority: KR
Inventors: 강경자
Original assignee: 강경자
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2018-12-10

Abstract

The present invention relates to a method to manufacture a paper container and, more specifically, to a method to manufacture a laminated sheet for a paper container which has a transparent window formed on a cover portion to enable a user to view internal content and is reinforced with a protective film. More specifically, according to the present invention, the method to manufacture a laminated sheet for a paper container comprises: a step of lamination-coating one surface of a paperboard with a polyester (PE) film; a step of cutting and forming the paperboard coated with the one laminating coated surface in a shape designing one or more windows in accordance with feature of a product; a step of laminating-coating again the paperboard coated with the PE film cut and formed in the previous step with a PE film to form a transparent window, wherein a transparent protective film is bonded to a surface having the transparent window formed thereon, such that the transparent window is reinforced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a paper container having a transparent window reinforced with a protective film,

The present invention relates to a method of manufacturing a paper container, and more particularly, to a method of manufacturing a paper container having a transparent window formed in a lid portion thereof and having a transparent window made of a protective film so that the contents can be seen.

In general, due to the increase of instant food and change of food culture, various disposable items are used in everyday life.

However, these disposable articles are mostly made of a synthetic resin material, which not only pollutes the environment but also generates harmful substances to the human body.

Accordingly, disposable articles made of paper materials are required to be used instead of disposable articles made of synthetic resin materials, so that they can be recycled into cups, noodle containers, rice goblets containers, etc., and are replaced with paper products harmless to the human body.

However, in the case of storing or distributing the contents such as dumplings, kimbab, sushi, sandwich or the like containing the moisture content inside the disposable article made of the paper material, the moisture contained in the contents is easily evaporated There arises a problem that the state at the time of manufacture can not be maintained continuously.

In order to solve such a problem, a paper sheet fed at a predetermined interval from one side and a polyethylene film (hereinafter referred to as "PE film ") provided on the paper sheet through a take- A paper sheet made by laminating a coated paper sheet which is pressed and melted by a roller and fused on one side of the paper sheet, It will block the moisture in the contents that escape to the outside.

The PE film which is laminated and coated on the paper sheet is used as an edible, non-toxic material which is harmless to the human body.

On the other hand, containers currently in circulation are sold in convenience stores and the like in a transparent packaging state using plastic materials so that the contents contained in the containers can be exposed to consumers.

However, when using paper containers to solve environmental and health problems, the contents contained in the inside can not be seen unless the lid connected to one side of the main body is opened.

Accordingly, a window portion is formed at a predetermined portion of the lid, and the contents can be seen through the window portion. A transparent thin film is attached to the window portion to prevent contamination by external dust or contact.

In this way, the contents of the container can be seen through the window portion with the transparent thin film attached on the lid, so that the consumers can easily and conveniently select the contents desired by the consumer. .

The work of attaching a transparent thin film to such a window portion can be achieved by, for example, as proposed in Japanese Utility Model Registration No. 339385 (Lunch box with a window), in which a transparent thin film is mechanically or manually hand- The adhesive is applied around the window portion and the transparent thin film is adhered thereon as in the case of attaching a transparent film to the address window of the mail envelope.

However, even if an automatic bonding machine is used, such a bonding operation to be carried out in the final process causes defects, and the defects generated in the final process are also largely lost. In view of the variety of paper containers, It is not easy to set the automatic bonding machine so as to match the shape, particularly the shape of the window part, and the workability is not good, and therefore, there is a limit to the mass production.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a lid having a transparent window portion which is firmly and easily attached to the window portion without limitation of its shape or number, And to provide a method of producing a paper container having a transparent window which allows the ink to be stored and handled in a stable state while maintaining the shape thereof.

According to an aspect of the present invention, there is provided a method of manufacturing a paper container lid having a transparent window reinforced with a protective film, the method comprising: laminating one surface of a paper sheet with a polyethylene film; A step of forming a cut in a shape designed for product characteristics of one or more windows on a paper laminate whose surface is coated with a lamination coating and a lamination coating treatment with a polyethylene film on a paper laminate coated with a polyethylene film cut in the above step And forming a transparent window, wherein a transparent protective film is adhered to the surface on which the transparent window is formed to strengthen the transparent window.

As described in detail above, according to the method of producing a paper container having a transparent window of the present invention, the entire window including the window portion is subjected to the laminating process with the PE film, so that the size, position and number of the transparent window portion are limited It is possible to attach the film to the window portion without receiving the adhesive, and it is remarkably lower than the defective rate when the transparent window is adhered to the window portion by the adhesive or the bonding by the heat pressure bonding method, and the workability is good, Production, and a transparent window is strengthened through a protective film.

In addition, a window part is formed on a paper laminate treated with a PE film, and the entire laminate including the window part is laminated with a PE film once, and the remainder of the window is laminated with a PE film twice The rigidity of the main body itself is greatly improved, and the contents are stably contained while maintaining the original shape, so that it is possible to provide not only the storage but also the stability in the distribution process, such as handling.

FIG. 1 shows a process of manufacturing a paper container having a transparent window according to an embodiment of the present invention.
2 shows a process of manufacturing a paper container having a transparent window according to another embodiment of the present invention.

Hereinafter, a method for producing a paper sheet laminar paper having a transparent window according to the present invention will be described in detail with reference to the accompanying drawings.

In order to achieve the above object, the present invention provides a method of producing a paper container having a transparent window in which a part can be seen, comprising the steps of: laminating one side surface of a paper sheet with a polyethylene film; A step of forming one or more windows on a paper board having one surface laminated with a coating on a surface of the paper, the paper being laminated with a polyethylene film that has been cut in the step, and laminating a polyethylene film And forming a transparent window on the transparent window, wherein the transparent window is formed on the transparent window.

Preferably, the paper sheet may be a matte natural pulp material.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The paper container having the transparent window manufactured by the method according to the embodiments of the present invention is characterized by comprising a body and a lid which is connected to one side of the body so as to be opened and closed, It is also possible to put the contents in the main body in a state of being closed, and to cover it with a lid.

A window portion is formed on the lid, and a PE film is put on the window portion in the form of a transparent thin film. The window portion may form several windows. In this case, a plurality of windows may be divided into a plurality of partitioning pieces so that various kinds of contents may not be mixed with each other.

A process for manufacturing a paper container in which a transparent window is formed on a lid covering the main body will be described with reference to FIG.

First, one surface of a paper sheet to be used for the paper container is laminated with a PE film. (S11)

The paper board is preferably a food wrapping paper of about 200 to 400 g / m < 2 >

Next, in step S11, the paper sheet on one side of which is subjected to the laminating coating process is cut into a shape of a paper container designed for product characteristics including one or more windows (S12)

That is, it is cut into a cutting mold according to the design drawing according to the characteristics of the paper container product. At this time, one or more window parts are formed on the lid, and the size and position of the window part can be variously changed according to the market demand .

In addition, when the paper sheet is cut, it can be designed and cut to be a paper container having a structure that is joined to a partition wall, a side wall, and the like and has a plurality of compartments.

Next, a transparent window is formed on the window part by performing a laminating coating process with the PE film on the paper laminate coated with the PE film cut in step S12 (S13).

That is, after the lid is fixed on the main body, the entire surface of the window including the window portion cut in step S12 is once again subjected to the laminating coating treatment with the PE film so that the contents in the container can be clearly seen through the window part.

Then, in a paper container having a transparent window which is finally subjected to a laminating coating process, the window part is formed of a PE film including one or more windows to form a transparent window with good workability, Is formed by laminating a paper sheet and a double layer of PE film in order to greatly enhance the strength of the body itself, thereby facilitating distribution such as storage and handling in the state of containing contents.

In addition, the transparent window can be provided with a transparent protective film of the same kind to enhance the transparent window to prevent the deterioration due to the contents and the explosion due to the external impact.

On the other hand, in the step S12, as shown in Fig. 2, only the window part is formed by cutting (S22), and when the step S13 is performed, the final laminating (S23), and then cut to form a paper container having a structure having a plurality of chambers joined with a partition wall, a side wall, etc. (S24)

The specific embodiments of the present invention have been described above. It is to be understood, however, that the spirit and scope of the invention are not limited to these specific embodiments, but that various changes and modifications may be made without departing from the spirit of the invention, If you are a person, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

S11 to S13: a process for producing a paper container in which a transparent window is formed
S21 to S24: Step of cutting and shaping into a shape designed according to the product characteristics of the paper container

Claims

1. A method for producing a paper container having a transparent window in which a part can be seen,
Laminating one surface of the paper sheet with a polyethylene film;
Forming one or more windows on a paper board having one side surface laminated with a coating designed in a shape designed for product characteristics; And
Forming a transparent window by laminating a polyethylene film on a paper sheet laminated with a polyethylene film that has been cut in the above step, wherein a transparent protective film is adhered to the transparent window, Wherein the transparent window is reinforced with a protective film.