Abstract: There are disclosed electroconductive paper which comprises on at least one side thereof, an electroconductive-substance-containing layer having a surface resistivity of at most 107 &OHgr; and a surface pH in the range of 5.5 to 8.0, and which has preferably a half-life period of static electricity being at most 0.2 second and a concentration of sulfate ions of at most 1 ppm, the ions being extracted by subjecting 1 g of electroconductive paper to an extraction treatment in 70 milliliter (mL) of deionized water at 100° C. for 1 hour; and a carrier for an electronic member which carrier uses the electroconductive paper. The above electroconductive paper is capable of suppressing the corrosion of the electronic member due to the generation of sulfate ions and the like, and thereby is well suited for use as a carrier for the electronic member.

Abstract: An adhesive tape or an adhesive label each of which comprises a substrate including a biodegradable polymer layer and an adhesive layer provided on at least one surface of the substrate. The adhesive tape has a release agent layer formed on an opposite surface to the surface where the adhesive layer is provided, or has a release tape which is in contact with the adhesive layer, and the adhesive tape was wound up around a core for storage. The adhesive label has a release sheet which is in contact with the adhesive layer. In such biodegradable adhesive tape and biodegradable adhesive label, a biodegradable polymer is used as a material of the substrate, and therefore the tape and label do not disrupt the natural environment or do not largely disorganize the ecosystem in the soil even when discarded in the soil after use.

Abstract: An adhesive tape or an adhesive label each of which comprises a substrate including a biodegradable polymer layer and an adhesive layer provided on at least one surface of the substrate. The adhesive tape has a release agent layer formed on an opposite surface to the surface where the adhesive layer is provided, or has a release tape which is in contact with the adhesive layer, and the adhesive tape was wound up around a core for storage. The adhesive label has a release sheet which is in contact with the adhesive layer. In such biodegradable adhesive tape and biodegradable adhesive label, a biodegradable polymer is used as a material of the substrate, and therefore the tape and label do not disrupt the natural environment or do not largely disorganize the ecosystem in the soil even when discarded in the soil after use.