METHOD OF EVALUATING ADHERENCE, MATERIAL OF LOW ADHERENCE AND RESIN SHAPING DIE

申请公布号：EP1728611(A1)

申请号：EP20050719881

申请日期：2005.03.03

申请公布日期：2006.12.06

申请人：

TOWA CORPORATION;JAPAN FINE CERAMICS CENTER

发明人：KUNO, TAKAKI;MAEDA, KEIJI;NOGUCHI, YOSHINORI;KITAOKA, SATOSHI;KAWASHIMA, NAOKI;SUDA, SEIICHI;YOSHIYA, MASATO;YAMAGUCHI, NORIO

分类号：B29C33/38;G01N19/04

主分类号：B29C33/38

摘要：A mold surface (6) of an upper mold (1) with which a fluid resin comes into contact has an oxide (3) therein. The oxide (3) contains a metal cation and an ion. Field strength is calculated based on a valence of the metal cation and an ionic radius of the ion. Based on predetermined relationship established between a value of the field strength and adhesion strength between a cured resin and the mold surface (6), releasability between the cured resin and the mold surface (6) is evaluated. Thereby, a method of evaluating releasability between the cured resin and the mold surface (6) is established. With this evaluation method, a material with high releasability (3) can readily be provided. Further, if the material with high releasability (3) is used for the mold surface (6) of the upper mold (1), a mold for molding a resin having excellent releasability can be obtained.

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