-
-
-
-
-
公开(公告)号:US20180306488A1
公开(公告)日:2018-10-25
申请号:US15642920
申请日:2017-07-06
申请人: CRISER, S.A. DE C.V.
CPC分类号: F25D23/087 , B23K1/0008 , B29C47/0066 , B29C47/06 , B29C47/8815 , B29K2023/06 , B29K2023/12 , B29K2027/06 , B29K2995/0008 , B29K2995/007 , B29L2031/265 , B29L2031/7622
摘要: The present invention relates to a process for the manufacture of a sealing gasket for a refrigerator, which simultaneously uses at least three extruders to form in a single operation a sealing gasket. The extruders simultaneously feed, in an extrusion die, a rigid or semi-rigid polymer, a flexible polymer and a mixture of a binder polymer and a magnetic material, for simultaneously forming the sealing gasket and, wherein a magnetizable zone is fully embedded within the gasket. After the sealing gasket has been formed in the extrusion die, it is cooled in a cooling section and then passed to a magnetization step to cause permanent magnetic fields and to ensure that the sealing gasket is fully magnetized.
-
-
-
-