Removable adhesive sheet
A technology of adhesive sheet and peeling, applied in the direction of adhesive, adhesive type, pressure-sensitive film/sheet, etc., can solve the problems of substrate breakage, poor peeling operation efficiency, adhesive residue, etc.
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Embodiment 1
[0107] 3 parts of LATEMUL S-180 (manufactured by Kao Corporation: 50% active ingredient) and 40 parts of deionized water were placed in a reaction vessel with a stirrer, a reflux cooling pipe, a nitrogen gas introduction pipe, a thermometer, and a dropping funnel, and blown in The temperature was raised to 60°C while nitrogen gas was used. Under stirring, add an aqueous solution in which 0.05 parts of 2,2'-azobis(2-methylpropionamidine) dihydrochloride is dissolved in 4.95 parts of deionized water, and then add 2-ethyl acrylic acid as an acrylic acid monomer Add LATEMUL S to the monomer mixture formed by 72.3 parts of hexyl ester, 25 parts of butyl acrylate, 0.5 part of methyl methacrylate, 1.0 part of acrylic acid, 1.2 parts of methacrylic acid, and 0.02 parts of dodecyl mercaptan as a chain transfer agent. -180 (2 parts) and 20 parts of deionized water are emulsified to obtain a monomer pre-emulsion, a part (4 parts) of the monomer pre-emulsion is added to the reaction vesse...
Embodiment 2
[0110] (preparation of primer)
[0111] Add 50 parts of an acrylic resin solution ("Thermolacef-32-3" manufactured by Soken Chemical Co., Ltd., 45% solid content) as an ink-accepting resin, 45 parts of a 4:1 mixed solvent of ethanol and isopropanol as a diluting solvent, and The antiblocking agent obtained 5 parts of synthetic silica (manufactured by Fuji silisea chemical "silisea 350"), and prepared 100 parts of compounding liquids in total. The compounded solution was dispersed for 20 minutes using a paint conditioner to obtain a primer with a solid content of 27.5%.
[0112] (Film production of polystyrene film base sheet)
[0113] To 100 parts of HIPS resin obtained by graft polymerization of 60 parts of styrene and 40 parts of SBR, 15 parts of a masterbatch containing 50% of titanium oxide was added to obtain a complex, which was extruded through a T die to produce The film machine performs melt extrusion at 200° C. to obtain a non-stretched film with a thickness of 100...
Embodiment 3
[0117] Except having used the polystyrene base material sheet of thickness 65 micrometers as a base material sheet, it carried out similarly to Example 2, and obtained the adhesive sheet (3). The obtained adhesive sheet (3) was also operated in the same manner as in Example 2, and 20% of the adhesive sheet (3) was added to the HIPS resin pellets and the denatured PPE resin pellets. When evaluating the change in tensile physical properties during recycling, it was confirmed that the added For either resin, the decrease in tensile strength at break was 12%, and the increase in tensile elongation at break was 15%, and any change in properties was ±20% or less, which is suitable for recycling.
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