Abstract: Provided is a surface protective sheet, which satisfactorily adheres to an adherend and which can be easily re-released and suppresses contamination due to a pressure-sensitive adhesive remaining on the surface of the adherend after the release of the sheet. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which a difference ?T (%) between the visible light transmittance T1(%) of a transparent substrate having an antireflection film and the visible light transmittance T2(%) of the transparent substrate resulting when the surface protective sheet is attached to one side of the transparent substrate and left to stand at 160° C. for 1 hour, and then the surface protective sheet is released under a temperature environment of 23° C. (?T=T1?T2) satisfies a relationship of ?T?1.8.

Abstract: Provided is a surface protective sheet, which satisfactorily adheres to an adherend and which shows little increase in adhesion with time, can easily be re-released, reduces the amount of a pressure-sensitive adhesive remaining on the surface of the adherend after the release of the sheet, and does not impair the self-cleaning property of the surface of a coated plate as the adherend. The surface protective sheet includes: a base material layer; and a pressure-sensitive adhesive layer, in which, when the surface protective sheet is attached to a silicon wafer on the pressure-sensitive adhesive layer side of the sheet and left to stand at 40° C. for 24 hours, and then the surface protective sheet is released under a temperature environment of 23° C., the surface of the resultant silicon wafer has a C/Si ratio of 0.8 or less in photoelectron spectroscopy analysis.

Abstract: A surface protective sheet which satisfactorily adheres to coated rough surfaces, with no observable adhesive residue without impairing the self-cleaning property of a coated plate, including a base material layer; and a pressure-sensitive adhesive layer, wherein: the pressure-sensitive adhesive layer has an adhesion for a coated steel plate having a ten-point average surface roughness Rz of 8.0 ?m of 0.05 N/20 mm or more; a main component including a polymer P obtained by cross-linking a polymer A; the polymer A having a weight-average molecular weight Mw of 500,000 or more; the polymer A having a distribution degree Mw/Mn of 8.0 or less; and an insoluble content of the polymer P in ethyl acetate is 90 wt % or more.

Abstract: 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).

Abstract: 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).

Abstract: 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.

Abstract: 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).

Abstract: Provided is the following base material for a surface protective sheet. The slipping property of the back surface of the sheet is moderately excellent, and scratches in the surface of an adherend laminated to contact the back surface of the sheet can be suppressed. Also provided is a surface protective sheet containing such base material for a surface protective sheet. The base material for a surface protective sheet of the present invention is a base material for a surface protective sheet including a base material layer (A), in which: at least one surface of the base material for a surface protective sheet is the surface of the base material layer (A); the base material layer (A) contains a polyolefin-based resin as a main component; the base material layer (A) contains polymer fine particles having an average particle diameter of 3 to 20 ?m at a content of 0.

Abstract: Provided is a novel surface protective sheet including a pressure-sensitive adhesive layer on a supporting base material, in which the pressure-sensitive adhesive layer has a high anchoring force for the supporting base material, and no adhesive residue occurs upon peeling of the surface protective sheet after its attachment to an adherend. The surface protective sheet of the present invention is a surface protective sheet including: a supporting base material; a surface layer (I) as one outermost layer of the supporting base material; and a pressure-sensitive adhesive layer on the surface layer (I), in which: the pressure-sensitive adhesive layer contains a thermoplastic elastomer; and the surface layer (I) contains a random polypropylene at a content of more than 50 wt %.

Abstract: Provided is a novel surface protective sheet including a pressure-sensitive adhesive layer on a supporting base material, in which the pressure-sensitive adhesive layer has a high anchoring force for the supporting base material, and no adhesive residue occurs upon peeling of the surface protective sheet after its attachment to an adherend. The surface protective sheet of the present invention is a surface protective sheet including: a supporting base material; a surface layer (I) as one outermost layer of the supporting base material; and a pressure-sensitive adhesive layer on the surface layer (I), in which: the pressure-sensitive adhesive layer contains a thermoplastic elastomer; and the surface layer (I) contains a linear, low-density polyethylene at the content of more than 50 wt %.