公开(公告)号：US06368698B1

公开(公告)日：2002-04-09

申请号：US09573977

申请日：2000-05-19

Applicant: Kay Rokman ,  Rod Komlenic ,  Kelly Rennels ,  Hakan Sabel

Inventor： Kay Rokman ,  Rod Komlenic ,  Kelly Rennels ,  Hakan Sabel

IPC: B32B300

CPC classification number: C08J5/046 ,  B32B5/28 ,  C08J5/24 ,  D21F11/002 ,  D21H13/18 ,  D21H13/22 ,  D21H13/24 ,  D21H13/26 ,  D21H13/40 ,  D21H25/005 ,  D21H25/04 ,  D21H25/06 ,  H05K1/0366 ,  H05K2201/0145 ,  H05K2201/0251 ,  H05K2201/0278 ,  H05K2201/0293 ,  Y10S428/901 ,  Y10T428/24917 ,  Y10T428/28 ,  Y10T442/2008 ,  Y10T442/2738 ,  Y10T442/608 ,  Y10T442/632 ,  Y10T442/637

Abstract: A printed circuit board is made from at least one non-woven sheet or web layer comprising at least 50% by weight acrylic fibers, with any balance substantially electrically non-conductive fibers, filler, and binder. The sheet or web is preferably made by the foam process, and may contain 60-80% straight polyacrylonitrile fibers and 40-20% fibrillated (pulp) ones. The web or sheet is preferably compressed by thermal calendering so that it has a density of about 0.1-1 grams per cubic centimeter; and the web or sheet may have a basis weight of between about 20-120 grams per square meter. The web or sheet may also have a 1-40% of substantially electrically non-conductive organic or inorganic binder, or may be substantially binder free. A printed circuit board made using the layers of these non-woven webs or sheets is otherwise conventional, including a pre-preg material, electrically conductive circuit elements, and electronics, and has improved properties compared to woven glass and non-woven aramid products, including improved fiber consolidation, easy board construction, and improved MD/CD ratio and stability.

Abstract translation: 印刷电路板由至少一种包含至少50重量％的丙烯酸纤维的无纺布片材或纤维网层制成，任何平衡物基本上不导电的纤维，填料和粘合剂。 片材或纤维网优选通过泡沫方法制成，并且可以含有60-80％的直链聚丙烯腈纤维和40-20％的原纤化（纸浆）纤维。 纤维网或片材优选通过热压延来压缩，使其具有约0.1-1克/立方厘米的密度; 并且网或片可以具有介于约20-120克/平方米之间的基重。 幅材或片材还可以具有1-40％的基本上不导电的有机或无机粘合剂，或者可以是基本上不含粘合剂的。 使用这些非织造网或片的层制成的印刷电路板是常规的，包括预浸材料，导电电路元件和电子元件，并且与机织玻璃和非织造芳族聚酰胺产品相比具有改进的性能， 包括改进的纤维固结，易于板的构建，以及改善的MD / CD比和稳定性。

公开(公告)号：US06258203B1

公开(公告)日：2001-07-10

申请号：US09399775

申请日：1999-09-21

Applicant: Kay Rokman ,  Rod Komlenic ,  Kelly Rennels ,  Hakan Sabel

Inventor： Kay Rokman ,  Rod Komlenic ,  Kelly Rennels ,  Hakan Sabel

IPC: D04H500

CPC classification number: C08J5/046 ,  B32B5/28 ,  C08J5/24 ,  D21F11/002 ,  D21H13/18 ,  D21H13/22 ,  D21H13/24 ,  D21H13/26 ,  D21H13/40 ,  D21H25/005 ,  D21H25/04 ,  D21H25/06 ,  H05K1/0366 ,  H05K2201/0145 ,  H05K2201/0251 ,  H05K2201/0278 ,  H05K2201/0293 ,  Y10S428/901 ,  Y10T428/24917 ,  Y10T428/28 ,  Y10T442/2008 ,  Y10T442/2738 ,  Y10T442/608 ,  Y10T442/632 ,  Y10T442/637

Abstract: A printed circuit board is made from at least one non-woven sheet or web layer comprising at least 50% by weight acrylic fibers, with any balance substantially electrically non-conductive fibers, filler, and binder. The sheet or web is preferably made by the foam process, and may contain 60-80% straight polyacrylonitrile fibers and 40-20% fibrillated (pulp) ones. The web or sheet is preferably compressed by thermal calendering so that it has a density of about 0.1-1 grams per cubic centimeter; and the web or sheet may have a basis weight of between about 20-120 grams per square meter. The web or sheet may also have a 1-40% of substantially electrically non-conductive organic or inorganic binder, or may be substantially binder free. A printed circuit board made using the layers of these non-woven webs or sheets is otherwise conventional, including a pre-preg material, electrically conductive circuit elements, and electronics, and has improved properties compared to woven glass and non-woven aramid products, including improved fiber consolidation, easy board construction, and improved MD/CD ratio and stability.