WO2009048227A1

WO2009048227A1 - Method of recycling bottles

Info

Publication number: WO2009048227A1
Application number: PCT/KR2008/005505
Authority: WO
Inventors: Jeong Nam Lim
Original assignee: SHINSUNG INNOTEK CO Ltd
Current assignee: SHINSUNG INNOTEK CO Ltd
Priority date: 2007-10-10
Filing date: 2008-09-17
Publication date: 2009-04-16
Anticipated expiration: 2010-04-10

Abstract

The present invention relates to a method of recycling bottles including the steps of: (A) collecting the bottles each having a heat-shrinkable film sealed around the outer periphery thereof and laying the bottles down on a conveyor belt having a guide mounted along the both sides thereof so as to convey the bottles along the conveyor belt; (B) irradiating infrared rays emitted from a laser irradiator on the heat-shrinkable film sealed around the outer periphery of each bottle so as to cut the heat-shrinkable film by a predetermined width through heating; (C) widening the opening formed on the cut heat-shrinkable film using an air injector and a brush roller so as to remove the cut heat-shrinkable film from each bottle; and (D) conveying the bottles from which the heat-shrinkable films are removed on the conveyor belt with them laid down on the conveyor belt to thereby recycle the bottles.

Description

METHOD OF RECYCLING BOTTLES

Technical Field

[1] The present invention relates to a method of recycling bottles, and more particularly, to a method of recycling bottles having various sizes and shapes and made of a glass material or a synthetic resin material, wherein the bottles are collected such that a heat- shrinkable film sealed around an outer periphery of each bottle is cut by a predetermined width by means of a laser irradiator and the cut heat-shrinkable film is removed from the bottle, thereby achieving the mechanization and automation in the process of removing the heat-shrinkable film from the bottle and remarkably reducing the cost needed for removing the heat-shrinkable film to ensure a high economic efficiency. Background Art

[2] Packing bottles are generally made of a glass or synthetic resin material. It is required that the trademark and design indicating the contents stored therein and brief instructions for use should be printed and inscribed on the outer periphery of the packing bottles.

[3] A method of inscribing such contents on the packing bottles are classified into two types: first, the contents related to the product are directly printed and inscribed on the outer periphery of the bottle; and second, after the contents related to the product stored in the bottle including a trademark, various designs, instructions for use, warnings in use, warnings on safety, quality indications, bar codes, and so on are printed and inscribed on a heat-shrinkable film (for example, a PET film, a PP film, a PE film, a PVC film, and an OPS film), the heat-shrinkable film having the contents printed and inscribed thereon is sealed around the outer periphery of the bottle.

[4] Recently, the latter method wherein the separate heat-shrinkable film having the contents related to the product printed and inscribed thereon is sealed around the outer periphery of the packing bottle, is more popular than the former method wherein the contents related to the product are directly printed around the outer periphery of the bottle.

[5] Referring to the process of manufacturing the heat-shrinkable film, first, a transparent film sheet is printed with the contents having the product trademark having various patterns and colors and the instructions for use, and so on while being supplied to a printing device. Then, an adhesive material is applied on both ends of the printed film, such that the printed film is rolled to a cylindrical shape.

[6] Then, the roll-type printed film is provided at a film supplier and cuts at given intervals by means of the film supplier. Thereafter, the cut film is placed around the outer periphery of the packing bottle, and the packing bottle is passed through a heater, such that the printed film is thermally shrunken around the outer periphery of the packing bottle and is tightly sealed thereon.

[7] Packing bottles having a variety of contents stored therein are generally made of a glass or synthetic resin material, but most of them are made of a synthetic resin material for the sake of convenience of use, delivery and storage.

[8] Each of the packing bottles made of the synthetic resin material includes a body, a cap adapted to open and close an opening thereof, and a heat-shrinkable film sealed around the outer periphery of the body thereof.

[9] Generally, the body and cap of the packing bottle made of the synthetic resin material is made of the same material as each other, but the heat-shrinkable film sealed around the outer periphery of the body is made of a different material from that of which the body is made.

[10] On the other hand, some of the packing bottles cannot be made of the synthetic resin material because of the characteristics of the products stored therein. That is, distilled liquor bottles, beer bottles, various food and beverage bottles, drug bottles, agricultural chemicals bottles, and so on are generally made of a glass material for the sake of safety of the contents stored therein, in spite of the excellent advantages the synthetic resin material has.

[11] Such a glass bottle has the heat-shrinkable film sealed around the outer periphery thereof by means of heat shrinkage, and the heat-shrinkable film has the product information including the trademark of a corresponding product, descriptions for use, and so on printed thereon.

[12] Therefore, in order for manufacturers to recycle this glass bottle, they collect empty glass bottles and then remove the heat-shrinkable films sealed around the outer peripheries of the empty glass bottles from the glass bottles. Next, the inside of the empty glass bottles are washed cleanly to store the corresponding contents therein again.

[13] In recent days, since much attention is paid to the prevention of environmental contamination and the resource recycling, the packing bottles made of the synthetic resin material which are thrown away as a waste after once use, have been recycled by removing the product label from the body thereof. Alternatively, the glass bottles are collected and the heat-shrinkable film sealed around the outer periphery thereof are removed from the body thereof, and then, the insides of the glass bottles are washed cleanly for their recycling. Disclosure of Invention Technical Problem [14] Referring first to the process for recycling the PET packing bottles made of the synthetic resin material, the heat-shrinkable film (label) sealed around the outer periphery of the bottle body should be cut and removed from the body.

[15] Hence, the packing bottles made of the synthetic resin material are collected, and the heat-shrinkable film (label) sealed around the outer periphery of the bottle is removed by a manual operation. Alternatively, the collected packing bottles are fractured by means of fracturing equipment and are then submerged into water. Next, the fractured pieces of the body of the bottle are separated from the heat-shrinkable film (label) according to their specific gravity.

[16] When it is desired to recycle the packing bottles made of the synthetic resin material, the label should be first removed from the bottle by means of a manual operation, which undesirably causes high personnel costs, thereby increasing the costs needed for recycling. On the other hand, when it is desired to fracture the packing bottles for their recycling, very expensive fracturing equipment and a relatively large space for the installation are needed.

[17] Referring next to the process for recycling the packing bottles made of the glass material, the glass bottles are collected and crushed to given sizes, and after the crushed pieces are cleaned to remove foreign substances therefrom, they are melted to a temperature over a melting point and are then recycled.

[18] In order to recycle the glass bottles, the devices for crushing and melting them are required, which causes high costs for recycling and a number of processes, thereby providing a low economic efficiency.

[19] In order to solve the above-mentioned problems, recently, there are proposed various methods for removing the foreign substances and attached things on the waste bottles and for directly recycling them.

[20] In other words, in order to burn the sticker attached on the glass bottle by means of an incinerator, the glass bottle is heated over a predetermined temperature.

[21] By the way, if the heat treatment according to the temperature is performed erroneously, since the waste glasses are different in thickness to cause the unbalancing of heat expansion and cooling retraction, the waste glasses are broken or deformed in shape. If sufficient preheating is performed in order to prevent these problems, the waste glasses are deformed in shape. Further, the handling time and the heat consumption quantity are all increased to cause the productivity to be lowered.

[22] Therefore, various methods have been developed to remove the heat-shrinkable film sealed around the outer periphery of the glass bottle by means of heat shrinkage.

[23] Since the heat-shrinkable film is tightly sealed around the outer periphery of the glass bottle by means of heat shrinkage, it is very difficult to remove it from the glass bottle. In the prior art, after the glass bottles are collected by the wholesale dealers, the heat- shrinkable film sealed thereon is cut and removed in a lengthwise direction by means of a manual operation. However, the operation of removing the heat-shrinkable film from the glass bottle is hard and inconvenient to cause the operating efficiency to be lowered, and also, the recycling process of the glass bottles cannot be performed automatically.

[24] In another prior art, two cut-off lines are previously formed on the heat-shrinkable film before the heat-shrinkable film is attached on the glass bottle, and next, the heat- shrinkable film is sealed on the glass bottle by means of heat shrinkage. When it is desired to recycle the glass bottle, therefore, the heat-shrinkable film is cut off along the two cut-off lines formed on the glass bottle and is removed therefrom. However, the portions of the heat-shrinkable film on which the two cut-off lines are formed may be previously cut off by the high heat generated when the heat-shrinkable film is sealed, which causes the generation of defective products.

[25] A glass bottle according to still another prior art is disclosed in Korean Utility Model

Registration No.428045.

[26] As shown in FIGS.1 and 2, there is proposed a glass bottle structure having a glass bottle 100, a cap 101 adapted to be sealed along the neck portion of the top periphery thereof, and a heat-shrinkable film 102 adapted to be sealed along the outer periphery of the glass bottle 100, the glass bottle structure including a film-heating tape 103 adapted to be attached vertically on the rear surface of the heat-shrinkable film 102.

[27] When the glass bottles are passed through a high-frequency generator on a conveyor device so as to collect and recycle them, high heat is applied to the film-heating tape 103 by the generation of the high-frequency wavelengths from the high-frequency generator, such that the portion of the heat-shrinkable film 102 abutting against the film-heating tape 103 is melted to remove the heat-shrinkable film 102 from the outer periphery of the glass bottle.

[28] However, when the glass bottles are passed through the high-frequency generator on the conveyor device so as to collect and recycle them, the portion of the heat- shrinkable film 102 abutting against the film-heating tape 103 is not completely melted, thereby failing to clearly remove the heat-shrinkable film 102 from the outer periphery of the glass bottle.

[29] According to the conventional methods for recycling the glass bottles, therefore, it is impossible to perform the economic automation in their recycling, and further, even though a manufacture desires to have the heat-shrinkable film having more various and attractive printing contents, appropriate means for removing the heat-shrinkable film from the outer periphery of the glass bottle is not proposed, thereby failing to have the outer periphery of the glass bottle printed with more various and attractive contents.

[30] As a result, since the conventional glass bottle recycling method allows the collected glass bottles to be broken and melted in a furnace to make a glass bottle again, it is relatively low in economic efficiency as compared to a method wherein the collected glass bottles are recycled after removing the heat-shrinkable film therefrom. That is, the conventional glass bottle recycling method results in an unnecessary consumption of resources and an increase in the production costs.

[31] Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a method of recycling bottles wherein while the bottles are conveyed by means of a conveyor belt on an automated line, a heat-shrinkable film sealed around the outer periphery of each bottle is cut by means of a laser irradiator to completely remove the heat-shrinkable film from the bottle, such that the bottles are recycled on the automated line with low costs irrespective of the sizes and shapes of the bottles, and the mechanization and automation in the process of removing the heat-shrinkable film from the bottle are achieved to remarkably reduce the cost needed for removing the heat- shrinkable film, thereby ensuring a high economic efficiency. Technical Solution

[32] To accomplish the above object, according to an aspect of the present invention, there is provided a method of recycling bottles including the steps of: (A) collecting the bottles each having a heat-shrinkable film sealed around the outer periphery thereof and laying the bottles down on a conveyor belt having a guide mounted along the both sides thereof so as to convey the bottles along the conveyor belt; (B) irradiating infrared rays emitted from a laser irradiator on the heat-shrinkable film sealed around the outer periphery of each bottle so as to cut the heat-shrinkable film by a predetermined width through heating; (C) widening the opening formed on the cut heat- shrinkable film using an air injector and a brush roller so as to remove the cut heat- shrinkable film from the bottle; and (D) conveying the bottles from which the heat- shrinkable films are removed on the conveyor belt with them laid down on the conveyor belt to thereby recycle the bottles.

[33] To accomplish the above object, according to another aspect of the present invention, there is provided a method of recycling bottles including the steps of: (F) collecting the bottles each having a heat-shrinkable film sealed around the outer periphery thereof and erecting the bottles on a conveyor belt so as to sequentially convey the bottles; (A) laying the bottles down on the conveyor belt having a guide mounted along the both sides thereof so as to convey the bottles along the conveyor belt; (B) irradiating infrared rays emitted from a laser irradiator on the heat-shrinkable film sealed around the outer periphery of each bottle so as to cut the heat-shrinkable film by a predetermined width through heating; (C) widening the opening formed on the cut heat- shrinkable film using an air injector and a brush roller so as to remove the cut heat- shrinkable film from each bottle; (D) conveying the bottles from which the heat- shrinkable films are removed on the conveyor belt; and (G) erecting and conveying the bottles on the conveyor belt to thereby recycle the bottles.

Advantageous Effects

[34] As described above, according to the present invention, there is provided a method for recycling the bottles wherein while the bottles are conveyed by means of the conveyor belt on the automated line, the heat- shrinkable film sealed around the outer periphery of each bottle is cut by a predetermined width by means of the laser irradiator to allow the heat-shrinkable film to be completely removed from each bottle, such that the bottles are recycled on the automated line with low costs for recycling irrespective of the sizes and shapes of the bottles, the mechanization and automation in the process of removing the heat-shrinkable film from the bottle are achieved, and the cost needed for removing the heat-shrinkable film is remarkably reduced, thereby ensuring a high economic efficiency. Brief Description of the Drawings

[35] The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which:

[36] FIGS.1 and 2 are perspective views showing conventional packing bottles;

[37] FIG.3 is a schematic flow chart showing a method for recycling a bottle according to an embodiment of the present invention;

[38] FIG.4 is a schematic flow chart showing a method for recycling a bottle according to another embodiment of the present invention;

[39] FIG.5 is a schematic flow chart showing a method for recycling a bottle according to still another embodiment of the present invention; and

[40] FIG.6 is a schematic flow chart showing a method for recycling a bottle according to yet still another embodiment of the present invention. Best Mode for Carrying Out the Invention

[41] Hereinafter, an explanation on a method of recycling bottles according to the present invention will be given in detail with reference to the attached drawings.

[42] The bottles as will be described below may include the packing bottles made of a glass or synthetic resin material, so as to completely remove the heat-shrinkable film sealed around the outer periphery of the bottle from the bottle.

[43] The method of recycling bottles according to the present invention includes the following steps, as shown in FIG.3.

[44] At a first step (A) wherein bottles 100 are laid down on a conveyor belt and are conveyed therealong, the bottles 100 having various sizes and shapes and made of a glass material or a synthetic resin material are collected after used once and laid down sequentially on a conveyor belt 1 in an automation line for recycling them so as to convey them along the conveyor belt 1.

[45] The conveyor belt 1, which is installed on a bottle-conveying line, has a guide 2 mounted along the both sides thereof so as to prevent the bottles from falling toward the sides thereof.

[46] Each of the bottles 100 has a heat-shrinkable film (for example, a PET film, a PP film, a PE film, a PVC film, and an OPS film) sealed around the outer periphery thereof, and the heat-shrinkable film has the contents related to the product stored in the bottle including a trademark having various designs and colors, instructions for use, bar codes, matters that demands special attention, matters that demands special attention for safety, quality indication, and so on printed thereon.

[47] The bottles 100 which are laid down sequentially in a lengthwise direction on the conveyor belt 1 at the first step (A) and are conveyed for the next step.

[48] In order to easily remove the heat-shrinkable film sealed around the outer periphery of the bottle at a second step as will be discussed below, while the bottles 100 are laid down in the lengthwise direction thereof and conveyed, they are cut by a predetermined width along the lengthwise direction thereof.

[49] At a second step (B) wherein the heat-shrinkable film sealed around the outer periphery of the bottle is cut by a predetermined width, since each of the bottles being conveyed through the first step has the heat-shrinkable film on which the trademark and the description for use are printed sealed around the outer periphery thereof, infrared rays emitted from a laser irradiator 3 mounted just over the bottles are irradiated to the heat-shrinkable films so as to remove the heat-shrinkable film from the bottle. As a result, the heat-shrinkable film is cut on each bottle by the predetermined width.

[50] The infrared rays emitted from the laser irradiator 3 are passed through the bottles

100 being conveyed along the conveyor belt 1 and then absorbed by means of a copper plate 4 mounted just below the laser irradiator 3, with a result that no damage is applied to a human body or the entire system.

[51] The laser irradiator 3 makes the use of invisible infrared laser to heat the heat- shrinkable film sealed around the outer periphery of the bottle, thereby allowing the heat-shrinkable film to be cut by the predetermined width. In the preferred embodiments of the present invention, desirably, the laser irradiator 3 is a Co₂ laser corresponding to a gas laser among a variety of lasers used in the industrial fields, but it is not necessarily limited thereto.

[52] The laser irradiator 3 is a high-power laser emitting 100 watts or more according to the thickness of the heat-shrinkable film, and since the outer periphery of the bottle is bent in shape, the laser irradiator 3 includes a lens having a relatively long focus distance to irradiate the laser beams two times and distribute the energy emitted therefrom, such that the damage on the physical properties of the bottle can be minimized in the cutting process of the heat-shrinkable film.

[53] The cutting of the heat-shrinkable film can be performed on both of the packing bottle made of a glass material and the pacing bottle made of a synthetic resin material.

[54] In case of the packing bottle made of the glass material, the heat-shrinkable film sealed around the outer periphery thereof is heated and cut by the predetermined width by mean of the laser irradiator 3, and then, the glass bottle is cleaned and recycled.

[55] In case of the packing bottle made of the synthetic resin material, the heat-shrinkable film sealed around the outer periphery thereof is made of a different material from the packing bottle made of the synthetic resin material.

[56] Therefore, after the heat-shrinkable film sealed around the outer periphery of the packing bottle made of the synthetic resin material is first removed from the bottle, the bottle can be recycled. Even though the packing bottle itself is melted when the heat- shrinkable film is heated and cut by means of the laser irradiator 3, there is no problem in recycling the packing bottle.

[57] An air absorber 5 which is operated by a compressor is disposed in vicinity of the laser irradiator 3 so as to absorb the smoke and smell generated when the heat- shrinkable film is heated and cut by means of the laser irradiator 3 and to discharge them to the outside, thereby maintaining a clean operating site.

[58] At a third step (C), the opening formed along the cut heat-shrinkable film is opened to remove the heat-shrinkable film from the bottle.

[59] Since the heat-shrinkable film cut at the second step (B) still remains in close contact with the outer periphery of the bottle even after it is cut by the predetermined width, the opening formed by the cutting of the heat-shrinkable film is opened to easily remove the heat-shrinkable film from the bottle.

[60] Thus, when the bottles on which the heat-shrinkable films are cut by the predetermined widths are conveyed along the conveyor belt 1, the opening formed on the heat-shrinkable film is opened by means of a plurality of air injectors 6, and the heat- shrinkable film is removed from the outer periphery of the bottle. At the same time, the heat-shrinkable film whose opening is opened is completely removed from the outer periphery of the bottle by means of a plurality of brush rollers 7 disposed in vicinity of the plurality of air injectors 6 and driven by means of a motor. At this time, the removed heat-shrinkable films are separately collected and recycled.

[61] At a fourth step (D) wherein the bottles from which the heat-shrinkable films are removed are conveyed in the state of being laid down on the conveyor belt, in the state where the heat-shrinkable film is completely removed from the outer periphery of the bottle at the third step, the bottles are conveyed along the conveyor belt 1 in the automation line for recycling them, while being laid down sequentially thereon.

[62] The conveyor belt 1 which is installed on the bottle-conveying line has the guide 2 mounted along the both sides thereof so as to prevent the bottles from falling toward the sides thereof.

[63] The bottles 100 being conveyed at the fourth step are continuously conveyed in the state of being laid down in a lengthwise direction on the conveyor belt 1, and the inside of each bottle is cleaned. Next, they are kept and stored so as to be recycled timely, thereby completing the method for recycling the bottles according to the present invention.

[64] FIG.4 shows a method for recycling a bottle according to another embodiment of the present invention, wherein the method further includes the step (E) of removing foreign substances attached along the outer periphery of the heat-shrinkable film sealed around the outer periphery of each bottle, the step (E) is being performed between the step (A) of laying the bottles down on the conveyor belt and conveying the bottles therealong and the step (B) of cutting the heat-shrinkable film sealed around the outer periphery of each bottle.

[65] As a result, in the method for recycling the bottles according to the preferred embodiment of the present invention the foreign substances attached to the heat- shrinkable film are brushed during the bottles 100 are laid down and conveyed on the conveyor belt 1, such that when the heat-shrinkable film is heated and cut by means of the laser irradiator 3 at the next step, it can be more completely and safely removed from the outer periphery of each bottle.

[66] At the step (E) of removing the foreign substances attached on the heat-shrinkable film sealed around the outer periphery of each bottle, a brush roller 8 and an air nozzle are disposed on the conveyor belt 1 in such a manner as to be activated by means of a motor, and they serve to brush the heat-shrinkable film sealed on the bottle 100 and to supply air thereto, thereby completely removing the foreign substances attached around the outer periphery of each bottle 100.

[67] FIG.5 shows a method of recycling bottles according to still another embodiment of the present invention, wherein in addition to the steps conducted in FIG.3, the method further includes the step (F) of erecting and conveying the bottles 100 on the conveyor belt 1 before the step (A) of laying down and conveying the bottles 100 on the conveyor belt 1 and the step (G) of erecting and conveying the bottles 100 on the conveyor belt 1 after the step (D) of laying down and conveying the bottles 100 from which the heat-shrinkable film is removed on the conveyor belt 1. In this preferred embodiment of the present invention, the method for recycling the bottles is conducted having a mechanized and automated system.

[68] FIG.6 shows a method of recycling bottles according to yet still another embodiment of the present invention, wherein in addition to the steps conducted in FIG.4, the method further includes the step (F) of erecting and conveying the bottles 100 on the conveyor belt 1 before the step (A) of laying down and conveying the bottles 100 on the conveyor belt 1 and the step (G) of erecting and conveying the bottles 100 on the conveyor belt 1 after the step (D) of laying down and conveying the bottles 100 from which the heat-shrinkable film is removed on the conveyor belt 1. In this preferred embodiment of the present invention, the method for recycling the bottles is conducted having a completely mechanized and automated system.

[69] The method for recycling the bottles according to the preferred embodiments of the present invention can be available to the bottles having various sizes and shapes and made of a glass material or a synthetic resin material, and the entire system for recycling the bottles can be automated and mechanized through the conveyor belt, thereby obtaining relatively higher economic advantages when compared with the conventional system wherein the bottles to be recycled are crushed, and thereby preventing the waste of domestic resources.

[70] Furthermore, even though the heat-shrinkable film is sealed in a double or triple layer around the outer periphery of the bottle to cause the thickness thereof to be increased, it can be heated and cut by a predetermined width by the irradiation of the infrared rays from the laser irradiator, thereby preventing the waste of the resources. Also, the recycling of the bottles can advantageously provide the reduction of the production costs to product manufacturers.

[71] While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.

[72]

Claims

[1] A method of recycling bottles comprising the steps of:

(A) collecting the bottles each having a heat-shrinkable film sealed around the outer periphery thereof and laying the bottles down on a conveyor belt having a guide mounted along the both sides thereof so as to convey the bottles along the conveyor belt;

(B) irradiating infrared rays emitted from a laser irradiator on the heat-shrinkable film sealed around the outer periphery of each bottle so as to cut the heat- shrinkable film by a predetermined width through heating;

(C) widening the opening formed on the cut heat-shrinkable film using an air injector and a brush roller so as to remove the cut heat-shrinkable film from each bottle; and

(D) conveying the bottles from which the heat-shrinkable films are removed on the conveyor belt with them laid down on the conveyor belt to thereby recycle the bottles.

[2] A method of recycling bottles comprising the steps of:

(F) collecting the bottles each having a heat-shrinkable film sealed around the outer periphery thereof and erecting the bottles on a conveyor belt so as to sequentially convey the bottles;

(A) laying the bottles down on the conveyor belt having a guide mounted along the both sides thereof so as to convey the bottles along the conveyor belt;

(C) widening the opening formed on the cut heat-shrinkable film using an air injector and a brush roller so as to remove the cut heat-shrinkable film from each bottle;

(D) conveying the bottles from which the heat-shrinkable films are removed on the conveyor belt with them laid down on the conveyor belt; and

(G) erecting and conveying the bottles on the conveyor belt to thereby recycle the bottles.

[3] The method of recycling bottles according to claim 1 or 2, further comprising the step (E) of removing foreign substances attached along the outer periphery of the heat-shrinkable film sealed around the outer periphery of each bottle between the step (A) of laying the bottles down on the conveyor belt and conveying the bottles therealong and the step (B) of cutting the heat-shrinkable film sealed around the outer periphery of each bottle.

[4] The method of recycling bottles according to claim 1 or 2, wherein an air absorber adapted to be operated by a compressor is disposed in the vicinity of the laser irradiator so as to absorb the smoke and smell generated when the heat- shrinkable film is heated and cut by means of the laser irradiator and discharge the absorbed smoke and smell to the outside.

[5] The method of recycling bottles according to claim 1 or 2, wherein a copper plate is mounted just below the laser irradiator disposed at the step (B).

[6] The method of recycling bottles according to claim 1 or 2, wherein a bottle recycled through the method is any one selected from a packing bottle made of a glass material and a packing bottle made of a synthetic resin material.