The object of the invention is to provide a shoe press belt which has an excellent strength while the variation in strength among its parts being suppressed, and to provide a method for producing such a shoe press belt.
Provided is a shoe press belt for use in a papermaking machine comprising at least one resin layer, wherein the resin layer comprises a polyurethane resin formed by curing an urethane prepolymer having an isocyanate group with a curing agent having an active hydrogen group; the urethane prepolymer is obtained by reacting a polyisocyanate compound comprising 4,4'-methylene bis(phenylisocyanate) with a polyol compound comprising polytetramethylene ether glycol; and the curing agent comprises (a) polycarbonate diol(s).
本发明的目的是提供一种具有优异强度的压鞋带,同时抑制其各部分之间的强度变化,并提供一种生产这种压鞋带的方法。
本发明提供了一种用于造纸机的压鞋带,该压鞋带包括至少一个
树脂层,其中
树脂层包括聚
氨酯
树脂,该聚
氨酯
树脂是由具有
异氰酸酯基团的聚
氨酯预聚物与具有活性氢基团的固化剂固化而成;聚
氨酯预聚物是由包含 4,4'-亚甲基二苯基
异氰酸酯的多
异氰酸酯化合物与包含
聚四亚甲基醚二醇的多元醇化合物反应得到的;固化剂包含 (a) 聚
碳酸酯二醇。