KR100878986B1 - A apparatus for removing a bonding agent from a film - Google Patents

Abstract

A device for separating an adhesive from a film by using a swelling solution is provided to allow the adhesive to be removed massively within a short time, thereby recycling the film. A device for separating an adhesive from a film by using a swelling solution comprises a first roller(111) which unwinds the film wound where an adhesive is coated; a drawing unit(120) which draws the film rolled to the first roll to transfer it; an adhesive exfoliation unit which removes the adhesive adhered to the transferred film; and a swelling solution treatment unit which swells the adhesive coated on the film by using a swelling solution between the adhesive exfoliation unit and the first roller, wherein the adhesive exfoliation unit has a scratch unit(135) to remove the adhesive coated on the film.

Description

Film adhesive separator using swelling liquid {A apparatus for removing a bonding agent from a film}

The present invention relates to a film adhesive separator for removing an adhesive applied to a thin film such as a polyethylene resin film, a polypropylene resin film, a polyester resin film, and a polyvinyl chloride film. It is for recycling these films by rotating them to release these films from the rollers and removing the adhesive applied to these films.

In order to recycle adhesive-coated films such as polyethylene resin film, polypropylene resin film, polyester resin film, and polyvinyl chloride film coated with adhesive on the surface, the adhesive applied to these films must be separated and removed. .

However, the adhesive applied to these films has a strong adhesive force, so there is a problem that it takes time and cost to remove the adhesive from these films.

The present invention is a short time by treating the adhesive applied to a thin film such as polyethylene resin film, polypropylene resin film, polyester resin film, polyvinyl chromide film with a swelling liquid containing an organic solvent, and then by the adhesive peeling means To provide a film adhesive separator that can be removed in bulk.

The present invention provides a first roller for releasing a film coated with an adhesive, a drawing means for drawing and conveying the film wound on the first roller, and an adhesive attached to the film unwound from the first roller. Swelling between the adhesive peeling means and the first roller such that the adhesive peeling means provided between the first roller and the extracting means and the adhesive peeling means facilitate peeling the adhesive so as to contact with It relates to a film adhesive separator using a swelling liquid comprising a swelling liquid treatment for swelling the adhesive applied to the film using a liquid.

In the present invention, the swelling liquid treatment part may include a swelling liquid container in which the swelling liquid is accommodated, and a swelling liquid processing roller in which a portion in contact with the film to guide the transfer of the film is located in the swelling liquid container. The adhesive peeling means may be a scratching means having a wedge-shaped blade formed to remove the adhesive applied to the film.

In the present invention, the adhesive peeling means may include a scraping means having a wedge-shaped blade is formed to remove the adhesive applied to the film, the adhesive peeling means is in contact with the film to guide the transfer of the film It may include an adhesive peeling roller, the scraping means may be installed so that the wedge-shaped blade is close to the outer peripheral surface of the adhesive peeling roller.

The present invention may include a tension roller in contact with the surface on which the adhesive of the film is applied such that the opposite surface on which the adhesive of the film is applied is pressed against the adhesive peeling roller, and the drawing means to remove the sludge formed on the film. And it is installed between the adhesive peeling means, the circumferential surface may include a sludge removal roller in contact with the surface on which the adhesive is formed, the sludge removal roller may be formed of a silicon material to prevent the generation of static electricity, the film An electrostatic eliminator may be provided in an opposite direction of the sludge removing roller.

In the present invention, the withdrawal means may be a first take-out roller and a second take-out roller that rotates while pressing both sides of the film, the present invention is a layer peeled from the film is wound when the film is a multilayer film It may include an auxiliary roller, the second roller for winding the film passed through the drawing means, and a hopper installed below the sludge removal roller and adhesive peeling means to collect the adhesive and sludge removed from the film can do.

On the other hand, in the present invention, the adhesive peeling means may include a polishing portion formed with a plurality of projections on the surface, the adhesive peeling means may include a polishing roller provided with the polishing portion on the circumferential surface, the polishing portion sandpaper Or a brush.

On the other hand, the present invention comprises the step of releasing the film wound on the first roller by applying the adhesive, and the adhesive applied to the film to swell the adhesive applied to the film released from the first roller conveyed by the organic solvent Swelling treatment with a swelling liquid, and in contact with the adhesive to a film adhesive separation method using a swelling liquid comprising the step of removing the adhesive.

In the present invention, the adhesive removing step may remove the adhesive by contacting the adhesive with a scratch means formed with a wedge-shaped blade.

The apparatus according to the present invention removes a large amount in a short time by the adhesive peeling means after treating the adhesive applied to the thin film such as polyethylene resin film, polypropylene resin film, polyester resin film, polyvinyl chloride film There is an advantageous advantage to recycling these films.

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

Example 1

Example 1 relates to a film adhesive separator using the swelling liquid according to the present invention. 1 shows a schematic configuration diagram of Embodiment 1. FIG.

Referring to FIG. 1, Embodiment 1 has a first roller 111. A film coated with an adhesive is wound on the first roller 111, and the first roller 111 is installed to release the wound film. Accordingly, the first roller shaft 113 is fixedly connected to the first roller 111, and the first roller shaft 113 may be rotatably mounted with respect to the first roller shaft support 115.

Referring to FIG. 1, Example 1 has a first take-out roller 121 and a second take-out roller 122. The first drawing roller 121 and the second drawing roller 122 are drawing means 120 for drawing out and conveying the film wound on the first roller 111. The first drawing roller 121 and the second drawing roller 122 are installed in opposite directions with respect to the film to press and rotate both sides of the film to apply a conveying force to the film. Therefore, the first take-out roller 121 rotates in the clockwise direction, and the second take-out roller 122 rotates in the counterclockwise direction.

Referring to Figure 1, Example 1 has an adhesive peeling roller 131 and the scraping means 135. The scratching means 135 is for scraping off the adhesive applied to the film, and the wedge-shaped blade is formed at the tip thereof. The scraping means 135 may be a knife.

Referring to Figure 1, the adhesive peeling roller 131 is installed so that the outer peripheral surface for guiding the transfer of the film is close to the blade of the scraping means 135. That is, the adhesive peeling roller 131 is installed so as to maintain a small gap between the blade formed in the scraping means 135, and the adhesive applied to the film passing through the gap is scraped off on the blade of the scraping means. . The adhesive peeling roller 131 is preferably rotated so that the outer circumferential surface for guiding the transfer of the film moves in the same manner as the transfer speed and the transfer direction of the film. Therefore, the adhesive peeling roller shaft 133 is fixedly connected to the adhesive peeling roller 131, and the adhesive peeling roller shaft 133 may be rotatably mounted with respect to the adhesive peeling roller shaft support (not shown).

That is, the adhesive peeling roller 131 and the scraping means 135 are adhesive peeling means 130 for removing the adhesive by contacting the film unwound from the first roller 111 and the adhesive attached to the film. The peeling means 130 is provided between the first roller 111 and the drawing means 120.

Referring to Figure 1, the first embodiment is provided with a tension roller 141. The tension roller 141 is in contact with the surface on which the adhesive is applied to the film to maintain a state in which the tensile force acts on the film, so that the blade of the scraping means 135 can sufficiently remove the surface on which the adhesive is applied to the film. To be installed. That is, the tension roller 141 is installed so that the blade of the scraping means 135 can remove the adhesive to its bottom by pressing the opposite surface on which the adhesive of the film is applied to the outer circumferential surface of the adhesive peeling roller 131. . The tension roller 141 is provided in a direction opposite to the swelling liquid treatment roller 151 described later with the adhesive peeling roller 131 interposed therebetween.

Referring to FIG. 1, a swelling liquid treatment part 150 is provided between the adhesive peeling means 130 and the first roller 111. The swelling liquid processing unit 150 includes a swelling liquid container 155 and a swelling liquid processing roller 151. The swelling liquid container 155 is a container in which the swelling liquid is accommodated. The swelling liquid is a solution containing an organic solvent capable of swelling the adhesive of the film. The adhesive is swelled in contact with the swelling liquid and is effectively scraped off by the blade of the scraping means 135.

Referring to Figure 1, the swelling liquid treatment roller 151 is installed so that the portion in contact with the film to guide the transfer of the film is located in the swelling liquid container 155. That is, when the swelling liquid is accommodated in the swelling liquid container 155, the film transferred to the swelling liquid treatment roller 151 is installed to be contained in the aqueous solution. Therefore, the entire portion of the swelling liquid treatment roller 151 does not need to be located inside the swelling liquid container 155. On the other hand, the swelling liquid treatment roller 151 is preferably rotated so that the outer circumferential surface for guiding the transfer of the film moves in the same manner as the feed rate and the transfer direction of the film. Accordingly, the swelling liquid treatment roller shaft 153 is fixedly connected to the swelling liquid treatment roller 151, and the swelling liquid treatment roller shaft 153 is rotatably mounted with respect to the swelling liquid treatment roller shaft support (not shown). Can be.

Referring to FIG. 1, a sludge removal roller 161 is provided between the lead means 120 and the tension roller 141. The film may not be completely peeled off by the adhesive scratched on the scratching means 135, or sludge may be formed by adhering suspended solids in the air to the surface on which the adhesive is formed. The sludge removal roller 161 is to remove the sludge formed on the film and is installed so that the circumferential surface thereof is in contact with the surface on which the adhesive is formed. The sludge removal roller 161 is preferably formed of a material that prevents the generation of static electricity due to contact with the film, and thus may be formed of a silicon material. In addition, the sludge removal roller 161 may be driven by a belt (not shown) which is an electric transmission device, in which case the sludge removal roller 161 rotates in the opposite direction to the conveying direction of the film, thereby increasing the frictional force. The sludge formed on the film can be effectively removed.

Referring to FIG. 1, an electrostatic eliminator 165 is provided in an opposite direction of the sludge removing roller 161 around the film. The static eliminator 165 is a device for preventing the sludge from being strongly adsorbed by the film due to the static electricity generated in the film and not easily peeled off by the sludge removing roller 161. The static eliminator 165 is a conventional device, and may be, for example, spraying water through a nozzle.

Referring to FIG. 1, Embodiment 1 has a second roller 171. The second roller 171 is a roller that winds up the film that has passed through the drawing means 120. The second roller shaft 173 is fixedly connected to the second roller 171, and the second roller shaft 173 may be rotatably mounted with respect to the second roller shaft support 175. Therefore, as the second roller shaft 173 is driven and rotated, the second roller 171 rotates and winds up the film passing through the drawing means 120.

Referring to FIG. 1, a hopper 182 is provided below the sludge removing roller 161 and the adhesive peeling means 130. Hopper 182 is for collecting the adhesive and sludge removed from the film. A lower portion of the hopper 182 may be provided with a conveyor (not shown) for transferring the collected adhesive and sludge.

2 shows a schematic view of the main part of a modified embodiment of the first embodiment.

Referring to FIG. 2, the above-described modified embodiment has a third roller 191. The third roller 191 is for winding a layer of film separated from the adhesive when the film wound on the first roller 111 is a two-layer film laminated in two layers by an adhesive.

3 shows a schematic view of a main part of another modified embodiment of the first embodiment.

Referring to FIG. 3, the above-described modified embodiment has a third roller 191 and a fourth roller 195. The third roller 191 and the fourth roller 195 are the first adhesive layer when the film wound on the first roller 111 is a three-layer film bonded to the first adhesive layer and the second adhesive layer and laminated in three layers. For winding each of the two film layers separated from each other.

Hereinafter, the operation of the first embodiment described above will be described.

Referring to FIG. 1, a film coated with an adhesive on one surface is wound on a first roller 111, and one end of the film is connected to a second roller through a first drawing roller 121 and a second drawing roller 122. It is wound around 171.

Referring to FIG. 1, when the first draw roller 121 and the second draw roller 122 rotate while pressing the film, a tensile force acts on the film, and thus the film is released from the first roller 111.

1 and 2, the film released from the first roller 111 is guided by the swelling liquid treatment roller 151 and comes into contact with the swelling liquid contained in the swelling liquid container 155. Since the swelling liquid contains an organic solvent that swells the adhesive, the adhesive swells to help the adhesive effectively peel off by the scraping means 135.

Referring to Figure 1, since the tension roller 141 is provided in a direction opposite to the swelling liquid processing roller 151 with the adhesive peeling roller 131 therebetween, the film swelling liquid processing roller 151 in a constant tension state ) , The blade of the scratching means 135 can scrape off the adhesive to its bottom.

Referring to Figure 1, since the film passing through the adhesive peeling means 130 is in contact with the sludge removal roller 161, the sludge formed on the film is removed. At this time, since the static electricity generated in the film is removed by the static eliminator 165, and the sludge removal roller 161 is formed of silicon, the static electricity existing between the film and the sludge is small so that the sludge removal roller 161 effectively removes the sludge. You can do it.

Referring to FIG. 1, the film from which the sludge has been removed is wound around the second roller 171 by passing through the first drawing roller 121 and the second drawing roller 122.

Meanwhile, referring to FIGS. 2 and 3, in the modified embodiment of Embodiment 1, when the film is a double film or a triple film, the third roller 191 and the fourth roller 195 are separated from the double film or the triple film. Each of the remaining layers of film were wound up.

Example 2

Example 2 relates to a film adhesive separator using the swelling liquid according to the present invention. 4 shows a schematic configuration diagram of Embodiment 2. FIG.

4, the second embodiment includes a first roller 211, a first roller shaft 213, a first roller shaft support 215, a first take-out roller 221, and a second take-out roller 222. Swelling liquid treatment unit 250, sludge removal roller 261, static eliminator 265, including the withdrawal means 220, adhesive peeling means 230, swelling liquid treatment roller 251 and swelling liquid container 255 ), A second roller 271, a second roller shaft 273, a second roller shaft support 275, and a hopper 282. Except for the adhesive peeling means 230 of these, since it is described in Example 1, the description thereof is omitted.

4, the adhesive peeling means 230 includes an adhesive peeling roller 231 and a scraping means 235. The scraping means 235 is for scraping off the adhesive applied to the film, and the tip is formed with a wedge-shaped blade. The scraping means 235 may be a knife.

Referring to Figure 4, the adhesive peeling roller 231 is installed so that the outer peripheral surface for guiding the transfer of the film is close to the blade of the scraping means 235. That is, the adhesive peeling roller 231 maintains a small gap between the blade formed in the scraping means 235, and the adhesive applied to the film passing through the gap is scraped off on the blade of the scraping means 235. It is installed as possible. The adhesive peeling roller 231 is preferably rotated so that the outer circumferential surface for guiding the transfer of the film moves in the same manner as the transfer speed and the transfer direction of the film.

That is, the adhesive peeling roller 231 and the scraping means 235 are adhesive peeling means 230 for removing the adhesive by contacting the film unwound from the first roller 211 and the adhesive attached to the film. The peeling means 230 is provided between the first roller 211 and the drawing means 220.

Referring to Figure 4, the adhesive peeling means 230 is provided between the sludge removal roller 261 and the swelling liquid treatment roller 251. Unlike in the first embodiment, the adhesive peeling means 230 has a common circumference of the outer circumferential surface of the swelling liquid treatment roller 251 and the outer circumferential surface of the sludge removing roller 261 and the blade of the scratching means 235 and the adhesive peeling roller 231. It is installed to pass through the gap formed by the outer peripheral surface of the. Therefore, only one scratching means 235 is installed in one adhesive peeling roller 231.

Although not shown in FIG. 4, a tension roller (not shown) may be provided between the neighboring scratching means 235 and the scratching means 235. Description of the tension roller (not shown) is as described in Example 1.

Although not shown in FIG. 4, the second embodiment may have a third roller (not shown) and a fourth roller (not shown) as in the modified embodiment of the first embodiment.

The operation of the second embodiment is as described in the first embodiment.

Example 3

Example 3 relates to a film adhesive separator for the swelling liquid according to the present invention. 5 shows a schematic view of the adhesive peeling means of Example 3. FIG.

Referring to Figure 5, the third embodiment has an adhesive peeling means 330. The adhesive peeling means 330 includes a polishing roller 331 and a polishing portion 335.

Referring to FIG. 5, a polishing part 335 is provided on the circumferential surface of the polishing roller 331. The polishing unit 335 has a plurality of protrusions formed on a surface thereof and may be sandpaper or a brush. The polishing roller 331 and the polishing portion 335 are adhesive peeling means 330 for removing the adhesive by contacting the adhesive attached to the film to be unwound from the first roller (not shown).

5, the polishing roller shaft 333 is fixedly connected to the polishing roller 331, the polishing roller shaft 333 may be rotatably mounted with respect to the polishing roller shaft support (not shown). In addition, the polishing roller 331 may be driven by a belt (not shown) which is an electric transmission device, in which case the polishing roller 331 rotates in the opposite direction to the conveying direction of the film, thereby increasing the frictional force on the film. The applied adhesive can be effectively polished off.

Other matters are as described in Example 1.

Example 4

Example 4 relates to a film adhesive separation method using the swelling liquid according to the present invention. 6 shows a flowchart of Embodiment 3.

Referring to FIG. 6, Embodiment 3 includes a first step S10, a second step S20, and a third step S30.

The first step S10 is a step of releasing the film wound on the first roller by applying an adhesive. There are several methods for releasing the film, and for example, the film can be released from the first roller by using the apparatus described in Example 1.

The second step (S20) is a step of swelling the adhesive applied to the film with a swelling liquid containing an organic solvent so that the adhesive applied to the film released from the first roller is swollen. There are various methods of treating the adhesive applied to the film with the swelling liquid. For example, the swelling liquid is accommodated in the swelling liquid processing container described in Example 1, and the film is conveyed and guided by the swelling liquid processing roller. It may be chemically reacted with the liquid to cause swelling.

The third step (S30) is a step of removing the adhesive in contact with the adhesive. There are a number of methods for removing the adhesive, for example, by using the scratching means described in Example 1 and the adhesive peeling roller can be removed the adhesive.

Although not shown in FIG. 6, Example 3 may include removing sludge formed on the film, removing static electricity generated in the film, and winding the film from which the adhesive and the sludge have been removed.

1 is a schematic configuration diagram of Embodiment 1. FIG.

2 is a schematic view of principal parts of a modified embodiment of the first embodiment;

3 is a schematic view of principal parts of another modified embodiment of the first embodiment;

4 is a schematic structural diagram of Embodiment 2;

Fig. 5 is a schematic view of the adhesive peeling means of Example 3;

6 is a flowchart of Embodiment 3;

<Description of the symbols for the main parts of the drawings>

111: first roller 113: first roller shaft

115: first roller shaft support

120: drawing means 121: first drawing roller

122: second withdrawal roller

130: adhesive peeling means 131: adhesive peeling roller

135: scratching means

141: tension roller

150: swelling liquid processing unit 151: swelling liquid processing roller

153: swelling liquid treatment roller shaft 155: swelling liquid container

161: sludge removal roller 165: static eliminator

171: second roller 173: second roller shaft

175: second roller shaft support

182: Hopper

191: Third roller 195: Fourth roller

211: First roller 213: First roller shaft

215: first roller shaft support

220: drawing means 221: first drawing roller

222: second withdrawal roller

230: adhesive peeling means 231: adhesive peeling roller

235: scratching means

250: swelling liquid processing unit 251: swelling liquid processing roller

255: swelling liquid container

261: sludge removal roller 265: static eliminator

271: 2nd roller 273: 2nd roller shaft

275: second roller shaft support

282: Hopper

330: adhesive peeling means 331: polishing roller

333: polishing roller shaft 335: polishing part

Claims (15)

delete delete A first roller for releasing the wound film coated with an adhesive, Drawing means for drawing out and conveying the film wound on the first roller; Adhesive peeling means provided between the first roller and the withdrawing means to contact the adhesive attached to the film unwound from the first roller to remove the adhesive; Including the swelling liquid treatment for swelling the adhesive applied to the film using the swelling liquid between the adhesive peeling means and the first roller so that the adhesive peeling means is easy to peel off the adhesive, The adhesive peeling means is a film adhesive separator using a swelling liquid, characterized in that it comprises a scratch means formed with a wedge-shaped blade to remove the adhesive applied to the film. The method of claim 3, The adhesive peeling means includes an adhesive peeling roller for contacting the film to guide the transfer of the film, The scraping means is a film adhesive separator using a swelling liquid, characterized in that the wedge-shaped blade is installed to be close to the outer peripheral surface of the adhesive peeling roller. The method of claim 4, wherein And a tension roller in contact with the surface to which the adhesive of the film is applied such that the opposite side to which the adhesive of the film is applied is pressed against the adhesive peeling roller. The method of claim 4, wherein A film adhesive separator using a swelling liquid, characterized in that it is provided between the take-out means and the adhesive peeling means to remove the sludge formed in the film, the circumferential surface comprises a sludge removal roller in contact with the surface on which the adhesive of the film is formed. . The method of claim 6, The sludge removing roller is a film adhesive separator using a swelling liquid, characterized in that formed of a silicon material to prevent the generation of static electricity. The method of claim 7, wherein The film adhesive separator, characterized in that the static eliminator is provided in the opposite direction of the sludge removal roller around the film. The method of claim 4, wherein The drawing means is a film adhesive separator using a swelling liquid, characterized in that the first drawing roller and the second drawing roller which rotates while pressing both sides of the film. The method of claim 4, wherein When the film is a multilayer film, the film adhesive separator using a swelling liquid, characterized in that it comprises an auxiliary roller on which the layer peeled from the film is wound. The method of claim 6 , A second roller for winding the film passing through the drawing means; And a hopper installed below the sludge removing roller and the adhesive peeling means to collect the adhesive and the sludge removed from the film. A first roller for releasing the wound film coated with an adhesive, Drawing means for drawing out and conveying the film wound on the first roller; Adhesive peeling means provided between the first roller and the withdrawing means to contact the adhesive attached to the film unwound from the first roller to remove the adhesive; Including the swelling liquid treatment for swelling the adhesive applied to the film using the swelling liquid between the adhesive peeling means and the first roller so that the adhesive peeling means is easy to peel off the adhesive, The adhesive peeling means is a film adhesive separator using a swelling liquid, characterized in that it comprises a polishing portion formed with a plurality of projections on the surface. The method of claim 12, The adhesive peeling means is a film adhesive separator using a swelling liquid, characterized in that the polishing portion includes a polishing roller provided on the circumferential surface. The method of claim 13, The polishing unit is a film adhesive separator using a swelling liquid, characterized in that the sandpaper or brush. The method according to any one of claims 3 to 14, The swelling liquid treatment unit includes a swelling liquid container in which the swelling liquid is accommodated, and a swelling liquid processing roller in which a portion in contact with the film to guide the transfer of the film is located in the swelling liquid container. Film adhesive separator using liquid.

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