KR20100003520A - Recycle method of bottle - Google Patents

Abstract

PURPOSE: A recycling method of bottles is provided to reduce manufacturing costs of the bottoms drastically, and to automate working processes removing heat shrinkable films while improving working efficiency. CONSTITUTION: A recycling method of bottles includes the following steps of: transferring a container on a conveyor belt(1) with a guide(2) after collecting a container(100) on which a heat shrinkable film is sealed; cutting the heat shrinkable film on an outer circumference of the container by irradiating infrared rays with a laser irradiator(3) on the outer circumference of the container; installing an air suction nozzle(4) operated by a compressor; and a copper coil(5) installing at the bottom of the laser irradiator.

Description

Recycle method of bottle

The present invention relates to a method for recycling a container, and more particularly, to automate a heat-shrinkable film sealed at the outer circumference of a container to recover and recycle a glass container or a plastic container of various sizes or shapes. A new type of cutting machine that can be cut and separated on a line with a laser irradiator to mechanize and automate the process of removing the heat-shrinkable film and significantly reduce the cost of removing the heat-shrinkable film. It relates to a recycling method of the container.

Containers such as packaging containers are molded of glass or synthetic resin, and the outer periphery of these packaging containers is to be printed and printed with a label, design, and a simple instruction manual indicating the contents stored in the packaging.

These packaging containers can be printed on the outer periphery of the container and printed on the outer periphery of the container, as examples, such as trademarks and various designs on heat shrinkable films (PET film, PP film, PE film, PVC film, OPS film). In some cases, the user's manual, precautions for use, safety precautions, quality markings, barcodes, etc. may be printed on the outer periphery of the packaging.

Recently, the printing of a separate heat-shrinkable film on the outer circumference of the container is more mainstream than the direct printing on the outer circumference of the packaging container.

Looking at the manufacturing process of the heat-shrinkable film printed as described above, while supplying a transparent film sheet to the printing device, after printing a trademark and instruction manuals with various patterns and colors on the surface of the film, and then adhesive on both ends of the printed film It is glued into a cylindrical roll.

Then, the roll-shaped printed film is installed in the film feeder, and the printed film is cut at regular intervals through the film feeder. Then, the cut film is inserted into the outer periphery of the packaging container, and the packaging container passes through the heater. The printed film is heat-shrinked on the outer circumference of the packaging container to be tightly sealed.

The packaging container for storing various contents is made of synthetic resin or glass, but most of the packaging container is made of synthetic resin for the convenience of use and transportation and storage of the packaging container.

The packaging containers made of synthetic resin are composed of a main body of the container, a cap that opens and closes the opening of the container, and a heat shrinkable film sealed to the outer periphery of the main body.

In general, the packaging container of synthetic resin material is formed of the same material as the body and the cap of the container, the heat-shrinkable film sealed on the outer periphery of the body is formed of a different material than the body of the container.

On the other hand, certain fields in which packaging containers cannot be made of synthetic resin materials, such as shochu bottles, beer bottles, various food and beverage bottles, medicine bottles, pesticide bottles, etc., are excellent in synthetic resins. I use it.

The glass container is heat-shrinkable film is sealed by the heat shrink on the outer periphery of the container, the product information such as the trademark and various instructions of the product is printed on the outer surface of the heat-shrinkable film.

Therefore, the producer collects empty bottles to recycle such glass containers, separates the heat-shrinkable film sealed on the outer periphery of the glass containers, removes them from the glass containers, and then washes the inside of the glass containers. It will go through a recycling process that contains the contents again.

Recently, due to growing interest in environmental pollution and recycling of resources, the plastic packaging containers that are disposed of after being used once are not recycled by separating the container body and the label or collected and damaged, and are sealed on the outer periphery of the glass containers. After removing the heat-shrinkable film, there is a growing interest in the technical field of washing and recycling the inside of the glass container.

Looking at the recycling process of plastic containers used and collected,

Packaging containers made of synthetic resin such as PET bottles must first be removed by cutting and removing the heat-shrinkable film (label) sealed at the outer circumference of the body.

Therefore, the packaging container made of synthetic resin is collected, and the worker removes the heat-shrinkable film (label) sealed at the outer periphery of the container by hand, or the collected packaging container is crushed with crushing equipment and soaked in water, It uses a method of separating the crushed pieces and the heat shrinkable film (label).

Therefore, the recycling of packaging materials made of synthetic resins caused excessive labor costs by separating the labels by manual labor, and the recycling cost increased. When the packaging containers are shredded and recycled, the equipment for shredding the packaging containers is expensive and has a large installation space. It had the disadvantages it needed.

On the other hand, if you look at the recycling process of the glass packaging container used and collected,

The recycling of glass containers is to recover waste bottles, break them to a certain size, wash foreign substances, melt them to temperatures above the melting point, and use them as materials.

As above, a device for crushing waste and a device for dissolving waste are required for recycling, but this has a problem in that the cost and process for recycling are too high and economical.

Recently, in order to solve such a problem, technologies that can be used immediately by removing foreign substances and attachments of lung diseases have been developed.

In other words, in order to remove the stickers attached to the glass bottle, a technology for incineration of the sticker by heating it above a temperature at which the sticker attached to the outer circumference of the glass bottle can be burned has been developed.

However, this incineration method has a problem that if the heat treatment according to the temperature is wrong, the thickness of the glass bottle is uneven and the glass bottle is broken or the shape of the glass bottle is deformed due to unbalance of thermal expansion and cooling shrinkage. If sufficient preheating, as well as deformation, there is a problem that the productivity decreases due to the increase in processing time and the heat consumption.

Therefore, various techniques have been developed to separate the heat-shrinkable film sealed on the outer circumference of the glass container.

Since the shrink film is closely adhered by heat shrinkage on the outer circumference of the glass container, it is very difficult to detach it. As an example of the prior art, a worker cuts the shrink film in the longitudinal direction with a knife to cut the glass containers recovered by wholesalers. However, the separation of the shrink film was cumbersome and complicated, and the work efficiency was low and the recycling process could not be automated.

As another example of the prior art, an operator for recycling the used glass container by forming two lines of cut lines in the longitudinal direction in advance on the shrink film before being coated on the glass container, and then sealing them on the outer periphery of the glass container by heat shrinkage. The film was cut along the cutting line of the shrink film to separate the shrink film from the glass container. However, when the shrink film was sealed in the glass container, the cutting line of the shrink film was cut off in advance due to the high temperature.

As another conventional technology, glass containers such as Korean Utility Model Registration No. 428045 have been developed.

As shown in FIGS. 1 and 2, the glass container has a glass container 100, a cap 101 sealed to an upper neck of the glass container, and a heat shrinkable film sealed to an outer circumference of the glass container. In the glass container composed of (102),

The film heating tape 103 is attached to the rear surface of the heat-shrinkable film 102 which is sealed at the outer circumference of the glass container 100 in the longitudinal direction.

Therefore, when the glass container passes through the high frequency generator on the transfer device to recover and reuse the glass container, high heat is generated in the film heating tape 103 by the high frequency wavelength, and the heat shrinkable film 102 in contact with the melt melts the heat shrinkable film. It is to be separated from the outer periphery of the glass container (100).

However, when the glass container having the above structure is recovered for reuse of the glass container and passed through the high frequency generator on the conveying device, the heat shrinkable film 102 is in contact with the film heating tape according to the outer circumference of the glass container. Was not completely melted so that the heat shrinkable film 102 could not be removed cleanly and completely from the outer periphery of the glass container 100.

Therefore, the conventional glass container recycling method is impossible to economically automated to recycle the glass container used, and even if the producer wants to print more variously and colorfully the heat-shrinkable film coated on the outer circumference of the glass container Since the technology of removing the heat-shrinkable film sealed on the outer circumference of the container was not developed, the outer circumference of the glass container could not be printed in various and colorful ways.

Therefore, the conventional glass container recycling method is that most of the glass containers are shredded and melted in the smelting furnace to rebuild the glass containers, rather than recovering the used glass containers and recycling them. It was very uneconomical.

The present invention was developed to solve the above conventional problems, the recycling method of the container of the present invention,

Recycling containers are transported to conveyor belts on the automation line, cutting the heat-shrinkable film sealed on the outer periphery of the container with a laser irradiator to completely separate the heat-shrinkable film from the outer periphery of the container, thereby automating any size or type of container. Not only can you recycle at a low cost on the line,

The process of removing the heat shrinkable film from the outer periphery of the container can be mechanized and automated, and the cost of removing the heat shrinkable film from the container can be drastically reduced to ensure economic feasibility.

In order to achieve the above object, the recycling method of the container of the present invention,

(A) recovering the container with the heat-shrinkable film sealed on the outer periphery and lying on the conveyor belt (1) having guides (2) on both sides for recycling of the container;

(B) cutting the heat-shrinkable film sealed to the outer circumference of the container by a predetermined width by irradiating the outer circumference of the container to be transported in the step with a laser irradiator (3);

A step (C) of lying down on the conveyor belt (1) having guides (2) on both sides for recycling the container in which the outer peripheral heat-shrinkable film is cut in the step (C); It consists of.

As described above, according to the recycling method of the container of the present invention,

By transporting recycled glass containers or plastic containers to the conveyor belt on the automation line, the heat-shrinkable film sealed on the outer periphery of the container is cut with a laser irradiator to completely separate from the outer periphery of the container.

Containers of any size or shape can be safely and completely separated and recycled on the automation line, mechanized and automated to remove the heat shrinkable film from the container, and remove the heat shrinkable film from the container. Economical efficiency can be secured by drastically reducing the cost of doing so, and it can meet the national interest of recycling resources while preventing waste of resources.

Hereinafter, the recycling method of the container according to the embodiment of the present invention will be described in detail as follows.

The containers described below are applicable to all containers, such as glass packaging containers or synthetic resin packaging containers, and are completely separated by heating a heat-shrinkable film sealed at the outer circumference of these packaging containers and cutting them to a certain width. It can be done.

Container recycling method of the present invention is completed through the following steps as shown in FIG.

First step: transporting containers by lying down on the conveyor belt (A)

In order to collect and recycle glass containers of various sizes and shapes once used, and to collect and recycle them, they are laid out in a row on a conveyor belt 1 of an automation line that recycles the used container 100 in order. Transfer.

The conveyor belt installed on the container transfer line of the first step to transfer the container is provided with guides 2 on both sides of the conveyor belt so that each of the lying down containers does not fall sideways in the transfer process.

Heat shrinkable films (PET film, PP film, PE film, PVC film, OPS film) are sealed on the outer circumference of the container 100. Such heat shrinkable films have various patterns and colors on the outer circumference of the container and use instructions. There are printed bar codes, precautions for use, safety precautions, and quality markings.

The container 100 to be transferred in the first step (A) is sequentially laid in the longitudinal direction on the conveyor belt (1) so that the container is continuously transferred to the next step in the lying state.

This is to cut the heat-shrinkable film by a constant width in the longitudinal direction while the container is laid down in the longitudinal direction and conveyed sequentially so that it is easy to heat the heat-shrinkable film sealed on the outer circumference of the container in the second step to be described later.

Second step: cutting the heat shrinkable film sealed to the outer circumference of the container (B)

On the outer periphery of the container conveyed lying down in the first step, a heat shrinkable film printed with a trademark, various shapes and instructions for use of the product is sealed, and irradiated with an infrared ray irradiated by a laser irradiator 3 installed above to remove it. Thus, the heat-shrinkable film sealed at the outer circumference of the container is cut by a predetermined width.

The laser irradiator 3 of the second stage absorbs infrared rays passing through the container 100 transferred along the conveyor belt 1 by installing the copper plate 5 directly below, thereby absorbing the human body or other parts of the entire system. No damage was made.

The laser irradiator 3 heats and cuts a heat-shrinkable film attached to the outer circumference of the container by using an invisible infrared laser, and Co corresponding to a gas laser among various types of lasers used for industrial purposes. ₂ Lasers are preferred but not limited thereto.

The laser irradiator 3 may use a high power laser of 100 watts or more depending on the thickness of the heat shrinkable film, and in general, since the outer peripheral shape of the container is curved, the laser irradiator 3 cuts the heat shrinkable film with an infrared laser. In order to minimize the damage, the lens with the long focal length was used to give the effect of irradiating the laser beam twice and to disperse the energy.

The container in which the heat-shrinkable film is cut by the laser irradiator 3 in the second step may be applied to both a glass container or a plastic container.

In the case of the glass packaging container, the heat-shrinkable film of the outer circumference may be cut by heating by a predetermined width by the laser irradiator 3, and then the glass packaging container may be washed and recycled.

In the case of the synthetic resin packaging container, the heat-shrinkable film sealed at the outer periphery of the synthetic resin material has a problem in recycling the synthetic container material and the material.

Therefore, the packaging container made of synthetic resin should remove the heat-shrinkable film sealed on the outer periphery, and then recycle the container. When the heat-shrinkable film is cut by heating with the laser irradiator (3), the plastic container body melts together. Even if cut, there is no problem in recycling the packaging.

In addition, when the laser irradiator 3 heats the heat-shrinkable film sealed at the outer circumference of the container by installing an air suction nozzle 4 operated by an external compressor at a point adjacent to the laser irradiator 3. Inhaled smoke and odor to be discharged to the outside to maintain a pleasant workplace.

The third step: the step (C) of conveying the container in which the heat-shrinkable film is cut by a predetermined width lying down on the conveyor belt

In order to recycle the heat-shrinkable film sealed to the outer periphery of the container in the second step in a predetermined width, it is laid in a line on the conveyor belt 1 of the automation line for recycling the used container 100. Transfer them sequentially.

The conveyor belt installed on the container transfer line of the third step to transfer the container is provided with guides 2 on both sides of the conveyor belt so that each of the lying down containers does not fall sideways in the transfer process.

The product producer collects these containers and recycles them while sequentially transporting the containers 100 transported in the third step in the longitudinal direction on the conveyor belt 1.

That is, the container 100 in which the heat-shrinkable film is cut to a certain width is in close contact with the outer circumference of the container as it is initially sealed, so when the container is a small amount, the operator can open and remove the heat-shrinkable film manually. In the case of a large amount, the opening of the heat-shrinkable film cut through the film stripping apparatus installed separately for automation may be separated from the outer periphery of the container.

Therefore, when the container in which the heat-shrinkable film is cut to a certain width is transferred to the conveyor belt (1), the worker contracts the heat shrinkage manually or by opening the opening of the cutable heat-shrinkable film through the film stripping device including the air spraying device and the brush roller. The film is completely peeled off from the outer periphery of the container, separated through the internal cleaning process of the container, and then stored and stored for recycling, thereby completing the container recycling method of the present invention.

Figure 2 shows another embodiment of the present invention, the container recycling method of the container recycling method of Figure 1,

The outer periphery of the container between the step (A) of lying down and conveying the container to be recycled in the first step on the conveyor belt and the step (B) of cutting the heat shrinkable film sealed to the outer periphery of the container of the second step It is made by further configuring a brush roller device (6) to shake off the foreign matter adhering to the outer periphery of the heat-shrinkable film sealed on.

Therefore, the recycling method of the container according to the embodiment of FIG. 2 by shaking off the foreign matter that may be attached to the outer peripheral heat-shrinkable film of the container in the process of laying the container 100 on the conveyor belt (1), The laser irradiator 3 of the next step can be safely and completely removed when the outer peripheral heat-shrinkable film of the container is heated and cut.

Brush roller device 6 for removing the foreign matter adhering to the heat-shrinkable film sealed to the outer periphery of the container of FIG. 2, Preferably, a brush roller and an air nozzle driven by a motor installed on the conveyor belt (1) The outer peripheral heat-shrinkable film of the container 100 to be transported on the conveyor belt was blown with a brush roller while blowing with air to completely detach the foreign matter attached to the outer circumference of the heat-shrinkable film.

The recycling method of the container of the present invention can be applied to all glass containers or synthetic resin containers of various sizes and shapes, and the entire system for recycling containers is automated and mechanized using a conveyor belt. It is possible to break the conventional recycling containers and to obtain a higher economic benefit than the recycling method again, and the waste of the national resources can be prevented by recycling the discarded resources.

In addition, even if the thickness of the heat-shrinkable film is increased by double triple sealing of various types of heat-shrinkable films on the outer circumference of the container, the heat-shrinkable film is heated by a predetermined width by irradiating infrared rays with a laser irradiator by the container recycling method of the present invention. It can be cut and recycled to avoid waste of resources, and product producers can reduce the production cost of products by recycling containers.

As described above, the recycling method of the container according to the present invention has been described with reference to the illustrated drawings. However, the present invention is not limited thereto by the embodiments and drawings disclosed herein, and should be understood by those skilled in the art within the technical scope of the present invention. Of course, various modifications may be made.

1, 2 is a perspective view of a packaging container according to the prior art

3 is an explanatory view schematically showing a recycling method of a container of the present invention;

4 is an explanatory diagram schematically showing a method of recycling a container according to another embodiment of FIG.

＊ Code explanations for main parts of the drawings ＊

1: Conveyor Belt 2: Guide

3: infrared irradiator 4: air suction nozzle

5: copper plate 6: brush roller device

100: container

Claims (4)

For recycling containers, A first step (A) of recovering the container 100 having the heat-shrinkable film sealed on its outer periphery and lying on the conveyor belt 1 having guides 2 on both sides; A second step (B) of cutting the heat-shrinkable film sealed to the outer circumference of the container by a predetermined width by irradiating infrared rays with the laser irradiator (3) on the outer circumference of the container transferred in the step; A third step (C) of lying down on the conveyer belt (1) having guides (2) on both sides to convey the container cut out of the heat-shrinkable film of the outer circumference (C); Recycling method of the container, characterized in that consisting of. The method of claim 1, Between the first step (A) of transporting the container 100 lying on the conveyor belt and the second step (B) of heating the heat-shrinkable film sealed on the outer circumference of the container to cut by a predetermined width, A method of recycling a container, characterized by further comprising a brush roller device (6) for brushing off foreign matter adhering to the outer circumference of the container. The method of claim 1, At the point adjacent to the laser irradiator 3, an air suction nozzle 4 operated by a compressor is installed to inhale smoke and odor generated when the laser irradiator 3 heats the outer peripheral heat shrinkable film of the container. Recycling method of the container characterized in that the discharge to. The method of claim 1, The recycling method of the container, characterized in that the copper plate (5) is provided directly below the laser irradiator (3) installed in the second step (B).

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