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    • 8. 发明专利
    • Method for manufacturing extruded foamed sheet having through holes
    • 用于制造具有通孔的挤出泡沫片的方法
    • JP2010143006A
    • 2010-07-01
    • JP2008320920
    • 2008-12-17
    • Kaneka Corp株式会社カネカ
    • OUCHI MANABU
    • B29C47/08B26F1/24B29K25/00B29K71/00B29K105/04
    • B29C44/5627B29C44/505
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing an extruded foamed sheet having through holes without causing a reduction in the thickness of an open cell layer and a decline in the amount of ventilation. SOLUTION: By forming the trough holds in the foamed sheet by using a needle roll in which a needle group produced by bundling a plurality of needles or pins having the ratio of the diameter to the surface diameter of the through holes of 0.3-0.5, the method for manufacturing the extruded foamed sheet having the through holes can be improved. By incorporation into the extrusion foaming production line of the extruded foamed sheet, productivity can be improved further. COPYRIGHT: (C)2010,JPO&INPIT
    • 待解决的问题:提供一种制造具有通孔的挤出发泡片材的方法,而不会导致开孔层的厚度减小和通风量的下降。 解决方案:通过使用针辊形成发泡片材中的槽保持件,其中通过将具有直径相对于通孔的直径的比率的多个针或销捆扎而制成的针组为0.3〜 0.5,可以提高具有通孔的挤出发泡片材的制造方法。 通过结合到挤出发泡片材的挤出发泡生产线中,可以进一步提高生产率。 版权所有(C)2010,JPO&INPIT