发明名称 Eraser and process for its manufacture
摘要 An eraser based on polyvinyl chloride having particles of a crosslinked polymeric natural or synthetic rubber embedded in the polyvinyl chloride structure. Such erasers have high strength and good aging resistance. Additionally, conventional softeners in the eraser do not undergo significant migration and consequently, the eraser does not smudge. A process for manufacturing the eraser is also disclosed.
申请公布号 US4393022(A) 申请公布日期 1983.07.12
申请号 US19810318923 申请日期 1981.11.06
申请人 STAEDTLER, J. S. 发明人 HANDL, WERNER
分类号 C08L27/00;B43L19/00;C08L1/00;C08L7/00;C08L21/00;C08L27/06;C08L33/00;C08L33/02;(IPC1-7):B29C17/14 主分类号 C08L27/00
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