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Film, decorated molded article having film adhered to surface of adherend, and method for manufacturing decorated molded article
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A molding and gluing technology, which is applied in the direction of decorations, adhesives, chemical instruments and methods, etc., can solve the problems of reduced productivity and reduced appearance quality, and achieve good formability
Inactive Publication Date: 2019-04-16
KURARAY CO LTD
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Problems solved by technology
These irregularities cause deterioration of the appearance quality, so a process of decorating after grinding the irregularities is required, and there are problems such as a decrease in productivity.
Method used
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[0193] Hereinafter, the present invention will be further specifically described through examples. It should be noted that the present invention is not limited by the examples.
[0194] Details of measurements performed in Examples and Comparative Examples are as follows.
[0195] [Measuring method of thickness of each layer of film]
[0196] The thicknesses of the substrate layer and the adhesive layer of the film were measured with a micrometer (manufactured by Mitutoyo Corporation, U-shaped steel plate micrometer).
[0197] [Measuring method of glass transition temperature]
[0198] Regarding the glass transition temperatures of the films used in Examples and Comparative Examples, the temperature was raised at a heating rate of 10°C / min using a differential scanning calorimeter ("DSC-822" manufactured by Mettler Toledo, Inc.). , obtained by extrapolating the onset temperature in the obtained curve.
[0199] [Measuring method of elastic modulus]
[0200] In order to mea...
manufacture example 1
[0236] [Manufacture Example 1: Manufacture of Substrate Layer Composition 1]
[0237]20 parts by mass of the acrylic block copolymer (G-1) produced in the following Production Example 1-1 and 80 parts by mass of the methacrylic resin (F-1) produced in the Production Example 1-2 were mixed with a twin-screw After melt-kneading at 230° C. by an extruder (TEM-28 manufactured by Toshiba Machine Co., Ltd.), it was extruded into strands and cut to produce pellets of the substrate layer composition 1 .
manufacture example 1-1
[0238] [Production Example 1-1: Production of Acrylic Block Copolymer (G-1)]
[0239] Into the three-necked flask after degassing the inside and replacing it with nitrogen, add 735 g of dry toluene, 0.4 g of hexamethyltriethylenetetramine and a mixture containing isobutylbis(2,6-di-tert-butyl-4 - 39.4 g of a toluene solution of 20 mmol of methylphenoxy)aluminum, and 1.17 mmol of sec-butyllithium was further added. 35.0 g of methyl methacrylate was added thereto, and it was made to react at room temperature 25 degreeC for 1 hour. Then, the reaction liquid was brought to -25°C, and a mixed liquid of 24.5 g of n-butyl acrylate and 10.5 g of benzyl acrylate was added dropwise over 0.5 hours.
[0240] Next, 35.0 g of methyl methacrylate was added, the reaction liquid was returned to room temperature, and stirred for 8 hours. Then, after adding 4 g of methanol to the reaction solution to stop the polymerization, the reaction solution was poured into a large amount of methanol, and...
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Abstract
Provided are: a film which can decorate even three-dimensional shapes, exhibits excellent formability when decorating (adhering to) an adherend, can reduce the size of variously-sized protrusions andrecesses present on the surface of the adherend by adhering, and improves external appearance; and a decorated molded article having said film. This film has a layer containing a thermoplastic resin.When Tg [DEG C] is the highest glass transition temperature of the film, there is, in the range of Tg to Tg+50 [DEG C], a temperature T [DEG C] at which the elongation at break of the film is at least50%. When A1(f) is the amplitude of the spatial frequency f of protrusions and recesses on an abrasive particle-surface of a polyester film sheet, said abrasive particle-surface being a surface coated with abrasive particles that are made of aluminum oxide and have a particle size of 12 mu m, A2(f) is the amplitude of the spatial frequency f of protrusions and recesses on the surface of the filmafter the film has been adhered to the abrasive particle-surface at a temperature in the range of Tg to Tg+50 [DEG C] and a pressure of 0.3 MPa, and Phi(f)=A2(f) / A1(f) is the ratio of A2(f) to A1(f),fc, which is the minimum spatial frequency satisfying Phi(f)= 0.1, is 2.0 mm-1 or less.
Description
technical field [0001] The present invention relates to a film adhered to an adherend having an uneven surface to improve appearance quality, a decorative molded article adhered to the film, and a method for producing the decorated molded article. Background technique [0002] In recent years, a decorative molding method using an adhesive film has been used for automotive interior and exterior parts, electronic equipment, miscellaneous goods, and the like. Compared with painting, this method can be expected to: Since no solvent is used, measures for exposure to the human body in the decoration process are not required, environmental burden is reduced, productivity can be improved by enabling one-time decoration of various shapes, and paint peeling is reduced. Quality improved. [0003] There are molded products made of metal and resin as the target of such decorative molding, that is, the member of the adherend. In addition, in recent years, for the purpose of reducing the...
Claims
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Application Information
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