Patent application number | Description | Published |
20110020637 | LAMINATED FILM AND PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is a laminated film and a pressure-sensitive adhesive tape in each of which a difference between an image clarity in a lengthwise direction and an image clarity in a widthwise direction is small and hence the distortion of transmitted light is small, and desired mechanical properties are substantially free of reduction. The laminated film of the present invention is a laminated film including a base material layer, and a surface layer, in which the base material layer contains a thermoplastic resin, and the absolute value of a difference between an image clarity in the lengthwise direction of the laminated film and an image clarity in the widthwise direction of the laminated film is 10% or less. | 01-27-2011 |
20110027531 | LAMINATED FILM AND PRESSURE-SENSITIVE ADHESIVE TAPE - Provided are a laminated film and a pressure-sensitive adhesive tape in each of which a haze value and surface roughness are adjusted without fluctuations in mechanical properties of the entire laminated film or pressure-sensitive adhesive tape. The laminated film of the present invention is a laminated film including a base material layer and a surface layer, in which the base material layer contains a thermoplastic resin, the surface layer has an arithmetic average surface roughness Ra of 0.5 μm to 2.0 μm, and the laminated film has a haze value of 13.5% to 80%. | 02-03-2011 |
20110033662 | LAMINATED FILM AND PRESSURE-SENSITIVE ADHESIVE TAPE - Provided are a laminated film and a pressure-sensitive adhesive tape each of which is adjusted so as to be capable of achieving compatibility between low haze property excellent in transparency and such large surface roughness that foreign matter such as a fish eye is hardly observed without fluctuations in mechanical properties of the entire laminated film or pressure-sensitive adhesive tape. Also provided is such a pressure-sensitive adhesive tape as described below capable of protecting the uneven surface of a member having unevenness on its surface. The pressure-sensitive adhesive tape brings together sufficient pressure-sensitive adhesiveness for, and sufficient releasability from, the member. In addition, even upon deformation of the member protected with the pressure-sensitive adhesive tape by, for example, lamination or continuous winding, the uneven shape does not deform and a base material layer in the pressure-sensitive adhesive tape is not damaged, and further, the pressure-sensitive adhesive tape is adjusted so as to be capable of achieving compatibility between low haze property excellent in transparency and such large surface roughness that foreign matter such as a fish eye is hardly observed without fluctuations in mechanical properties of the entire pressure-sensitive adhesive tape. Also provided is such a pressure-sensitive adhesive tape as described below. When a prism sheet having multiple triangle pole-shaped prisms fixed on its surface is used as the above-mentioned member having unevenness on its surface, the pressure-sensitive adhesive tape functions as a surface protective film capable of effectively protecting a lens surface, and brings together sufficient pressure-sensitive adhesiveness for, and sufficient releasability from, the prism sheet. In addition, when the prism sheet protected with the pressure-sensitive adhesive tape is brought into a state such as a laminated state or a continuously wound state, the emergence of irregularity (indentation) in the external appearance of the prism sheet to which the pressure-sensitive adhesive tape is attached can be suppressed. A laminated film of the present invention is a laminated film including a base material layer, a roughness-expressing layer, and a fine unevenness-erasing layer in the stated order, in which: the base material layer contains a thermoplastic resin; the roughness-expressing layer contains at least one kind of a resin component (A) selected from polyethylenes, ethylene-vinyl acetate copolymers, propylene-based polymers, and olefin-based thermoplastic elastomers; the fine unevenness-erasing layer contains a thermoplastic resin (B); an arithmetic average surface roughness Ra on the surface on the side of the fine unevenness-erasing layer is 1.0 μm to 3.0 μm; and the haze value of the laminated film is 30% or less. | 02-10-2011 |
20110033699 | PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is such a pressure-sensitive adhesive tape as described below, which is capable of protecting the uneven surface of a member having unevenness on its surface. The pressure-sensitive adhesive tape brings together sufficient pressure-sensitive adhesiveness for, and sufficient releasability from, the member. In addition, even upon deformation of the member protected with the pressure-sensitive adhesive tape by, for example, lamination or continuous winding, the uneven shape does not deform and a base material layer in the pressure-sensitive adhesive tape is not damaged. Also provided is a pressure-sensitive adhesive tape useful as such a surface protective film for a prism sheet as described below, which is capable of effectively protecting, for example, a lens surface of a prism sheet having multiple triangle pole-shaped prisms fixed on its surface. The surface protective film brings together sufficient pressure-sensitive adhesiveness for, and sufficient releasability from, the prism sheet. In addition, when the prism sheet protected with the surface protective film is brought into a state such as a laminated state or a continuously wound state, the emergence of irregularity (indentation) in the external appearance of the prism sheet to which the surface protective film is attached can be suppressed. A pressure-sensitive adhesive tape of the present invention is a pressure-sensitive adhesive tape including a base material layer, a first pressure-sensitive adhesive layer, and a second pressure-sensitive adhesive layer in the stated order, in which: the base material layer contains a thermoplastic resin; the storage modulus of the first pressure-sensitive adhesive layer is higher than the storage modulus of the second pressure-sensitive adhesive layer; and a difference between the storage modulus of the first pressure-sensitive adhesive layer at a frequency of 10 Hz and 23° C., and the storage modulus of the second pressure-sensitive adhesive layer at a frequency of 10 Hz and 23° C. is 3×10 | 02-10-2011 |
20110244221 | PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is the following novel pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape has a moderately weak adhesion during a time period from a production process (during its production) to the time of the accomplishment of the product as a result of the completion of the production (immediately after the production). Accordingly, a peeling failure and the occurrence of a wrinkle resulting from strong adherence of a pressure-sensitive adhesive layer to a roll or the like at the time of the production can be sufficiently suppressed. As a result, stable product supply can be performed. On the other hand, the pressure-sensitive adhesive tape can express a sufficiently strong adhesion for an adherend after a lapse of a predetermined time from the production (e.g., at the time of its use). The pressure-sensitive adhesive tape includes at least three layers including: a base material layer (A); a first pressure-sensitive adhesive layer (B | 10-06-2011 |
20110244227 | PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is the following novel pressure-sensitive adhesive tape that expresses a sufficiently strong adhesion for an adherend. The adhesion of the novel pressure-sensitive adhesive tape in its production process is controlled so as to be moderately weak. Accordingly, a peeling failure and the occurrence of a wrinkle are sufficiently suppressed, and hence stable product supply is performed. The pressure-sensitive adhesive tape of the present invention includes at least three layers including: a base material layer (A); a first pressure-sensitive adhesive layer (B | 10-06-2011 |
20110287240 | PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is a novel pressure-sensitive adhesive tape having a moderately weak adhesion during a time period from a production process (during its production) to the time of the accomplishment of the product as a result of the completion of the production (immediately after the production). Accordingly, the peeling failure, or the like, resulting from strong adherence of a pressure-sensitive adhesive layer to a roll or the like at the time of the production can be sufficiently suppressed. As a result, stable product supply can be performed. In addition, even after the lapse of about a half day from immediately after the production, the pressure-sensitive adhesive tape can be easily rewound. On the other hand, the pressure-sensitive adhesive tape can express a sufficiently strong adhesion for an adherend after the lapse of a predetermined time from the production (e.g., at the time of its use). The pressure-sensitive adhesive tape of the present invention includes at least three layers including: a base material layer (A); a first pressure-sensitive adhesive layer (B | 11-24-2011 |
20110287253 | PRESSURE-SENSITIVE ADHESIVE TAPE - Provided is the following novel pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape has a moderately weak adhesion during a time period from a production process (during its production) to the time of the accomplishment of the product as a result of the completion of the production (immediately after the production). Accordingly, the occurrence of a peeling trace, the occurrence of a peeling sound, and the like resulting from strong adherence of a pressure-sensitive adhesive layer to a roll or the like at the time of the production can be sufficiently suppressed. As a result, stable product supply can be performed. On the other hand, the pressure-sensitive adhesive tape can express a sufficiently strong adhesion for an adherend after a lapse of a predetermined time from the production (e.g., at the time of its use). The pressure-sensitive adhesive tape includes at least three layers including: a base material layer (A); a first pressure-sensitive adhesive layer (B | 11-24-2011 |