| 摘要 |
PROBLEM TO BE SOLVED: To provide the holding member of a long-life cylindrical container to be decorated which is inserted into the cylindrical container when printing and others are applied, is excellent in abrasion resistance, does not injure the container, controls the adhesion of metal, reduces the abrasion of a slide part contacting another member. SOLUTION: A holding member is equipped with a metal sleeve main body 1, a ceramic sleeve 2 of a silicon nitride sintered body, and a DLC coat and/or a diamond coat 3. Desirably, the surface roughness of the DLC coat and/or the diamond coat 3 is Rmax 0.8μm or below, no hole larger than 3×10-3 mm2 in area does not exist in the surface, and the number of holes 7×10-5-3×10-3 mm2 in area in a visual area of 800μm×600μm is within 5. Rigid coats 4, 5 are formed in the slide part contacting another member of the sleeve main body 1.
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