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    • 8. 发明申请
    • A COATED ABRASIVE BELT WITH AN ENDLESS, SEAMLESS BACKING AND METHOD OF PREPARATION
    • 具有无缝,无缝背衬的涂层磨砂带和制备方法
    • WO1993012911A1
    • 1993-07-08
    • PCT/US1992009331
    • 1992-10-30
    • MINNESOTA MINING AND MANUFACTURING COMPANY
    • MINNESOTA MINING AND MANUFACTURING COMPANYBENEDICT, Harold, W.ZIMNY, Diana, D.BANGE, Donna, W.
    • B24D11/00
    • B24D3/20B24D11/005B24D11/02
    • A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes 40-99 % by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided. The method includes the steps of preparing a loop of liquid binder material having fibrous reinforcing material therein around the periphery of a drum; and solidifying the binder material such that an endless, seamless, backing loop having fibrous reinforcing material engulfed within the organic polymeric binder material is formed.
    • 提供由无限循环组成的涂层磨料背衬。 基于背衬的重量,背衬环包括40-99重量%的有机聚合物粘合剂; 并且有效量的纤维增强材料被吞入有机聚合物粘合剂材料内。 无端的无缝背衬环包括具有平行侧边缘的长度,以及至少一层纤维增强材料被吞入有机聚合物粘合剂材料内,使得在层的相对表面上存在不含纤维增强材料的有机粘合剂材料区域 的纤维增强材料。 纤维增强材料可以是单独的纤维束,纤维垫结构或它们的组合的形式。 还提供了一种用于制备用于涂覆的砂带的无端的无缝背衬环的方法。 该方法包括以下步骤:在滚筒的周边周围制备具有纤维增强材料的液体粘合剂材料环; 并固化粘合剂材料,使得形成具有纤维增强材料的环形无缝的背衬环,该纤维增强材料被吞入有机聚合物粘合剂材料内。