KR-20260065848-A - Separation device for adhesive and substrate

KR20260065848AKR 20260065848 AKR20260065848 AKR 20260065848AKR-20260065848-A

Abstract

An apparatus is provided for easily separating an adhesive and a substrate from a mixture comprising an adhesive and a substrate. An apparatus for separating an adhesive and a substrate according to an embodiment of the present invention is an apparatus for separating an adhesive and a substrate from a mixture (A) comprising an adhesive and a substrate, and comprises a stirring tank having a first side and a second side facing in the longitudinal direction, a third side and a fourth side facing in the width direction, and a bottom surface; a stirring unit for stirring the mixture (A) within the stirring tank; a first liquid supply unit for supplying a first liquid within the stirring tank; an adhesive discharge unit for discharging the adhesive together with the liquid from the upper part of the first side of the stirring tank; an adhesive recovery unit for recovering the adhesive discharged from the adhesive discharge unit; and a substrate recovery unit for recovering the substrate from within the stirring tank.

Inventors

노무라 다카유키
고타니 치히로
야마다 요스케
야마모토 아키요시

Assignees

닛토덴코 가부시키가이샤

Dates

Publication Date: 20260511
Application Date: 20240821
Priority Date: 20230905

Claims (12)

A device for separating the adhesive and the substrate from a mixture (A) containing the adhesive and the substrate, and A stirring tank having a first side and a second side facing in the longitudinal direction, a third side and a fourth side facing in the width direction, and a bottom surface, and A stirring means for stirring the mixture (A) within the stirring tank, and A first liquid supply unit that supplies a first liquid into the mixing tank, and An adhesive discharge section that discharges the adhesive together with liquid from the upper part of the first side of the mixing tank, and An adhesive recovery unit that recovers the adhesive discharged from the adhesive discharge unit, and A material recovery unit that recovers the material from the mixing tank. including, Separation device for adhesive and substrate.
In paragraph 1, The first liquid supply unit is a separation device arranged to supply the first liquid into the stirring tank from above the stirring tank.
In paragraph 1, A separation device in which the first liquid supply unit is positioned on the first side or the second side.
In paragraph 1, The above first liquid supply unit is a separation device having a plurality of first liquid supply ports.
In paragraph 1, A separation device in which the above stirring means is stirring by a liquid flow generated by supplying a second liquid from a second liquid supply unit into the stirring tank.
In paragraph 5, A separation device in which the second liquid supply unit is disposed on the first side or the second side.
In paragraph 5, A separation device in which the second liquid supply unit has a plurality of second liquid supply ports facing in a horizontal direction.
In paragraph 6, A separation device in which the first liquid supply unit is positioned on the second side and the second liquid supply unit is positioned on the first side.
In paragraph 5, A separation device comprising a control unit that controls the supply amount of the first liquid from the first liquid supply unit and the supply amount of the second liquid from the second liquid supply unit.
In paragraph 1, The adhesive discharge portion is a separation device, which is a cutout provided on the upper part of the first side.
In paragraph 5, A separation device in which the liquid discharged from the adhesive discharge section is reused in at least one selected from the group consisting of the first liquid and the second liquid.
In paragraph 1, A separation device comprising an adhesive recovery unit, a separation member for recovering the adhesive discharged from the adhesive discharge unit, and a recovery tank for storing the liquid discharged from the adhesive discharge unit, wherein at least a portion of the separation member is immersed in the liquid.

Description

Separation device for adhesive and substrate The present invention relates to a device for separating an adhesive and a substrate. Adhesive tapes are widely used for attaching labels to articles or packaging materials, baling materials, use in manufacturing processes for electronic or optical components, and for masking purposes. In particular, their use in manufacturing processes for electronic or optical components has increased recently, and a large amount of adhesive tape waste is generated at manufacturing sites. Waste adhesive tape is typically disposed of by incineration or transported to a waste disposal facility. However, from the perspective of reducing the environmental burden and, furthermore, resource circulation, such disposal methods are undesirable. Therefore, it is necessary to minimize the disposal of adhesive tape waste as described above and to reuse resources. As a means of reducing such disposal of adhesive tape, the recycling of adhesive tape materials is considered. Once the technology for recycling adhesive tape materials is established, it is expected to lead to the suppression of CO2 emissions related to fossil resource extraction, for example, and have a significant effect on solving the problem of climate change. Representative materials for adhesive tape include adhesives and substrates. An adhesive tape is typically obtained by dissolving a polymer (sometimes referred to as a base polymer) and additives according to the purpose, such as a crosslinking agent, in a solvent to form an adhesive composition, coating this onto a substrate, and, if necessary, performing heating and drying to carry out a crosslinking reaction, thereby forming an adhesive on the substrate (e.g., Patent Document 1). FIG. 1 is a schematic diagram of a device for separating an adhesive and a substrate according to one embodiment of the present invention, viewed from a first side. FIG. 2 is a schematic top view of a device for separating an adhesive and a substrate according to one embodiment of the present invention. FIG. 3 is a cross-sectional view along line AA of FIG. 1, and is a schematic cross-sectional view of a device for separating an adhesive and a substrate according to one embodiment of the present invention, viewed from a third side. FIG. 4 is a schematic side view of a device for separating an adhesive and a substrate according to one embodiment of the present invention, viewed from the first side. Representative embodiments of the present invention are described below. The embodiments described below represent representative examples of the present invention, and the present invention is not limited to the embodiments described below. The device for separating an adhesive and a substrate according to an embodiment of the present invention is a device for separating the adhesive and the substrate from a mixture (A) containing an adhesive and a substrate. ≪≪Mixture (A)≫≫ A mixture (A) to be separated using an adhesive and substrate separation device according to an embodiment of the present invention will be described. The mixture (A) may include an adhesive and a substrate, may be a mixture of an adhesive and a substrate, or may be a mixture of an adhesive, a substrate, and any other suitable component. Examples of such other components include organic solvents. Any suitable composition or content ratio of the mixture (A) may be adopted within a range that does not impair the effects of the present invention. As for the adhesive, any suitable adhesive may be used within a range that does not impair the effects of the present invention. The adhesive may be of only one type or two or more types. Examples of such adhesives include acrylic adhesives, silicone adhesives, urethane adhesives, and rubber adhesives, and representative examples include acrylic adhesives. As for the acrylic adhesive, any suitable acrylic adhesive may be used within a range that does not impair the effects of the present invention. Representative examples of such acrylic adhesives include acrylic adhesives as waste (sometimes referred to as "waste acrylic adhesives"). Examples of waste acrylic adhesives include, for instance, acrylic adhesives contained in acrylic adhesive tapes recovered after use; a mixture containing acrylic adhesives obtained by performing any suitable treatment on acrylic adhesive tapes recovered after use; acrylic adhesives that remain on a substrate when the acrylic adhesive tape is peeled off from a substrate to which the acrylic adhesive tape is attached; and acrylic adhesives attached to an acrylic adhesive manufacturing device. As for the material, any suitable material may be adopted within a range that does not impair the effects of the present invention. The material may be of only one type or two or more types. Representative examples of such a material include a material included in an adhesive tape. As for the substrate, any suitable substrate may be adopted within a range that does not