公开(公告)号：US08298462B2

公开(公告)日：2012-10-30

申请号：US11026158

申请日：2004-12-30

申请人： Michael Luk ,  Jeff Sewell ,  Jason Hill

发明人： Michael Luk ,  Jeff Sewell ,  Jason Hill

IPC分类号： B27J5/00 ,  B29C55/00

CPC分类号： B29C55/065 ,  B29C55/005 ,  B29C55/22 ,  B29K2027/18

摘要： This invention relates to a method of uniaxially expanding a fluoropolymer product including the steps of expanding a green fluoropolymer product in a first direction to create a first-expanded fluoropolymer product, and expanding the first-expanded fluoropolymer product in the same first direction. As a result with the subject invention, it has been found that ultra-high expansion and a variety of different porous/fibril structures can be achieved by using subsequent expansion steps in the same direction. Various considerations exist with such methodology, including the selection of rates of expansion of both steps, the amount of expansion of both steps, pre-heating and cutting the product between expansion steps. Although the present invention can be used with various fluoropolymer products, it is particularly well-suited for use with PTFE.

摘要翻译： 本发明涉及一种单轴膨胀含氟聚合物产品的方法，包括以下步骤：在第一方向上膨胀绿色氟聚合物产品以产生第一膨胀的含氟聚合物产品，以及使第一膨胀的含氟聚合物产品沿相同的第一方向膨胀。 作为本发明的结果，已经发现通过在相同方向上使用随后的膨胀步骤可以实现超高膨胀和各种不同的多孔/原纤维结构。 存在这种方法的各种考虑，包括两个步骤的扩张速率的选择，两个步骤的扩展量，预热和扩展步骤之间的产品切割。 虽然本发明可以与各种含氟聚合物产品一起使用，但特别适用于PTFE。

公开(公告)号：US20060145394A1

公开(公告)日：2006-07-06

申请号：US11026158

申请日：2004-12-30

申请人： Michael Luk ,  Jeff Sewell ,  Jason Hill

发明人： Michael Luk ,  Jeff Sewell ,  Jason Hill

IPC分类号： B29C55/06 ,  B29C55/22

CPC分类号： B29C55/065 ,  B29C55/005 ,  B29C55/22 ,  B29K2027/18

摘要： This invention relates to a method of uniaxially expanding a fluoropolymer product including the steps of expanding a green fluoropolymer product in a first direction to create a first-expanded fluoropolymer product, and expanding the first-expanded fluoropolymer product in the same first direction. As a result with the subject invention, it has been found that ultra-high expansion and a variety of different porous/fibril structures can be achieved by using subsequent expansion steps in the same direction. Various considerations exist with such methodology, including the selection of rates of expansion of both steps, the amount of expansion of both steps, pre-heating and cutting the product between expansion steps. Although the present invention can be used with various fluoropolymer products, it is particularly well-suited for use with PTFE.

摘要翻译： 本发明涉及一种单轴膨胀含氟聚合物产品的方法，包括以下步骤：在第一方向上膨胀绿色氟聚合物产品以产生第一膨胀的含氟聚合物产品，以及使第一膨胀的含氟聚合物产品沿相同的第一方向膨胀。 作为本发明的结果，已经发现通过在相同方向上使用随后的膨胀步骤可以实现超高膨胀和各种不同的多孔/原纤维结构。 存在这种方法的各种考虑，包括两个步骤的扩张速率的选择，两个步骤的扩展量，预热和扩展步骤之间的产品切割。 虽然本发明可以与各种含氟聚合物产品一起使用，但特别适用于PTFE。