The invention provides a pressure-sensitive adhesive for the skin excellent in pressure-sensitive adhesiveness to the human skin and repeelability therefrom, which does not cause the horny layer to be torn away in peeling and is lowly irritant to the skin; and tapes or sheets made by using the same. The pressure-sensitive adhesive is characterized by comprising (a) 100 parts by weight of a copolymer which is prepared from an olefinic macromonomer and a vinyl monomer and whose molecular weight (in terms of polystyrene and as determined by gel permeation chromatography (GPC)) has a two-peak distribution (with the proviso that when the copolymer is to be post-cured, the distribution is one as determined before the post cure) and (b) 20 to 250 parts by weight of a softener which is compatible with the copolymer and liquid or pasty at room temperature and has a boiling point of 250 or above (with the proviso that when the content of the softener (b) exceeds 80 parts by weight, the copolymer must be post-cured).
本发明提供了一种对人体皮肤具有良好的压敏粘着性和剥离性的压敏粘合剂,其在剥离时不会使角质层撕裂,并且对皮肤刺激低;以及使用该压敏粘合剂制成的胶带或片材。该压敏粘合剂的特点是包括(a)100份重量的共聚物,该共聚物是由烯烃型大分子单体和
乙烯单体制备而成,其分子量(以聚
苯乙烯为单位,并通过凝胶渗透色谱法(
GPC)确定)具有双峰分布(前提是当共聚物要进行后固化时,分布是在后固化之前确定的);以及(b)20至250份重量的软化剂,该软化剂与共聚物相容,在室温下为液体或膏状,并具有250或以上的沸点(前提是当软化剂(b)的含量超过80份重量时,共聚物必须进行后固化)。