发明名称 Nonwoven abrasive material roll
摘要 A longitudinally extending web of lofty nonwoven abrasive surface treatment material is provided in a coreless roll form to the end user. Successive wraps of the nonwoven abrasive material have interengaging surfaces sufficient to maintain the material in a spirally wrapped configuration yet being readily separable. A plurality of longitudinally spaced and laterally disposed perforations through the web permit the user to successively separate the web into a plurality of sheets of abrasive surface treatment material. In a preferred embodiment, the roll is encased in a protective shrink wrap sheath, and each sheet is separated from the roll by separating said sheet from an innermost wrap of the roll. In another preferred embodiment, the abrasive surface treatment material includes abrasive particles of 1000 grade or finer.
申请公布号 US6207246(B1) 申请公布日期 2001.03.27
申请号 US19990447843 申请日期 1999.11.23
申请人 3M INNOVATIVE PROPERTIES COMPANY 发明人 MOREN LOUIS S.;SPENCER DOUGLAS S.;WINDISCH LAURIE A.
分类号 A47L13/07;A47L13/17;A47L17/08;B24D3/28;B24D11/00;B24D15/04;B65H18/28;D04H1/42;D04H1/70;D04H13/00;(IPC1-7):B32B5/02 主分类号 A47L13/07
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