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    Multilayer film and laminate for use in producing printed circuit boards
    6.
    发明授权
    Multilayer film and laminate for use in producing printed circuit boards 失效
    用于生产印刷电路板的多层膜和层压板

    公开(公告)号：US5057372A

    公开(公告)日：1991-10-15

    申请号：US326931

    申请日：1989-03-22

    申请人： Stephen M. Imfeld ,  Randall S. Shipley

    发明人： Stephen M. Imfeld ,  Randall S. Shipley

    IPC分类号： B32B15/08 ,  H05K1/03 ,  H05K3/00 ,  H05K3/02 ,  H05K3/38

    CPC分类号： B32B15/08 ,  H05K3/025 ,  Y10S428/901 ,  Y10T428/31507 ,  Y10T428/31692 ,  Y10T428/31757 ,  Y10T428/31797 ,  Y10T428/31913

    摘要： A multilayer film having as one surface layer thereof a support layer containing a thermoplastic resin able to withstand temperatures up to 200 degrees C. without softening and the other surface layer an adhesive layer containing a thermoplastic resin having a melting point ranging from about 100 to 200 degrees C. Optionally, a tie layer may be employed between the support layer and the adhesive layer. The multilayer film is useful as a protective carrier sheet for a cladding metal foil used in the production of printed circuit boards. The carrier sheet provides temporary, peelable surface protection for the cladding metal foil preventing contamination and physical damage to the foil both before and during printed circuit board formation. Adhesion of the carrier sheet to the cladding metal foil, measured using a 180 degree peel test is less than 0.4 pounds/in-width and greater than 0.005 pounds/in-width, and preferably less than 0.1 pounds/in-width and greater than 0.01 pounds/in-width.

    摘要翻译： 一种多层膜，其具有一层表层，该支撑层含有能够耐受高达200℃的温度而不软化的热塑性树脂，另一表面层含有熔点为约100至200的热塑性树脂的粘合剂层 任选地，可以在支撑层和粘合剂层之间使用粘结层。 多层膜可用作印刷电路板生产中所用的包覆金属箔的保护载体片。 承载板为包覆金属箔提供临时的可剥离表面保护，防止在印刷电路板形成之前和期间对箔的污染和物理损坏。 使用180度剥离试验测量的载体片材对包层金属箔的粘附力小于0.4磅/宽，并且大于0.005磅/宽，优选小于0.1磅/宽度，并且大于 0.01磅/宽。

    Polyethylene blends and films
    8.
    发明授权
    Polyethylene blends and films 失效
    聚乙烯共混物和薄膜

    公开(公告)号：US06355733B1

    公开(公告)日：2002-03-12

    申请号：US09688314

    申请日：2000-10-13

    申请人： Kelly L. Williams ,  Leonard V. Cribbs ,  Stephen M. Imfeld ,  Venki Chandrashekar

    发明人： Kelly L. Williams ,  Leonard V. Cribbs ,  Stephen M. Imfeld ,  Venki Chandrashekar

    IPC分类号： C08L2300

    CPC分类号： C08L23/04 ,  C08L23/06 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2666/04

    摘要： A blend comprising a high molecular weight, medium density polyethylene (HMW, MDPE) and a linear low density polyethylene (LLDPE) is disclosed. The blend comprises from about 20 wt % to about 80 wt % of HMW MDPE. The HMW MDPE has a density from about 0.92 to about 0.944 g/cc, a melt index MI2 from about 0.01 to about 0.5 dg/min, and a melt flow ratio MFR from about 50 to about 300. The blend also comprises about 20 wt % to about 80 wt % of LLDPE. The LLDPE has a density within the range of about 0.90 to about 0.925 g/cc and an MI2 within the range of about 0.50 to about 50 dg/min. The blend provides films with significantly improved toughness and tear strength compared to MDPE or HDPE, and high modulus compared to LLDPE.

    摘要翻译： 公开了包含高分子量中密度聚乙烯（HMW，MDPE）和线性低密度聚乙烯（LLDPE）的共混物。 共混物包含约20重量％至约80重量％的HMW MDPE。 HMW MDPE具有约0.92至约0.944g / cc的密度，约0.01至约0.5dg / min的熔体指数MI2和约50至约300的熔体流动比MFR。共混物还包含约20重量％ ％至约80重量％的LLDPE。 LLDPE的密度在约0.90至约0.925g / cc的范围内，MI2在约0.50至约50dg / min的范围内。 与MDPE或HDPE相比，共混物提供的膜具有显着改善的韧性和撕裂强度，并且与LLDPE相比具有高模量。

    Polyolefin composition and film thereof
    10.
    发明申请
    Polyolefin composition and film thereof 审中-公开
    聚烯烃组合物及其膜

    公开(公告)号：US20110045265A1

    公开(公告)日：2011-02-24

    申请号：US12583547

    申请日：2009-08-20

    申请人： Jeffrey C. Haley ,  Harilaos Mavridis ,  Dennis M. Hudson ,  Ganesh Nagarajan ,  Stephen M. Imfeld ,  Giampaolo Pellegatti

    发明人： Jeffrey C. Haley ,  Harilaos Mavridis ,  Dennis M. Hudson ,  Ganesh Nagarajan ,  Stephen M. Imfeld ,  Giampaolo Pellegatti

    IPC分类号： C08L23/04 ,  B32B27/32

    CPC分类号： C08J5/18 ,  C08J2323/04 ,  C08L23/04 ,  C08L23/14 ,  C08L2205/02 ,  C08L2207/02 ,  C08L2666/06

    摘要： A polyolefin composition is disclosed. The composition comprises a single-site linear low density polyethylene (mLLDPE) and an elastoplastic polypropylene. The elastoplastic polypropylene is present in an amount sufficient to improve the processability and physical property of the mLLDPE. The composition preferably comprises from 70 wt % to 99 wt % of mLLDPE and from 1 wt % to 30 wt % of the elastoplastic polypropylene. The polyolefin composition of the invention exhibits improved bubble stability in the blown film extrusion compared to the mLLDPE and improved film properties such as tear strength and modulus compared to the traditional blend of mLLDPE and low density polyethylene.

    摘要翻译： 公开了一种聚烯烃组合物。 组合物包含单位点线性低密度聚乙烯（mLLDPE）和弹塑性聚丙烯。 弹性塑料聚丙烯以足以提高mLLDPE的加工性能和物理性能的量存在。 组合物优选包含70重量％至99重量％的mLLDPE和1重量％至30重量％的弹塑性聚丙烯。 与mLLDPE和低密度聚乙烯的传统共混物相比，本发明的聚烯烃组合物与mLLDPE相比，在吹塑薄膜挤出中显示出改进的气泡稳定性和改进的膜性能，例如撕裂强度和模量。