公开(公告)号：US06235845B1

公开(公告)日：2001-05-22

申请号：US09462249

申请日：2000-01-05

申请人： Akira Yamauchi ,  Jun Saito ,  Hiroyuki Maehara ,  Yuuichi Yamanaka

发明人： Akira Yamauchi ,  Jun Saito ,  Hiroyuki Maehara ,  Yuuichi Yamanaka

IPC分类号： C08L2302

CPC分类号： C08L23/02 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/10 ,  C08L2205/02 ,  C08L2666/04

摘要： An olefin (co)polymer composition of the present invention comprises 99 to 70 wt. % of olefin (co)polymer (I) and 1 to 30 wt. % of polyethylene-based polymer (II). The olefin (co)polymer (I) comprises 0.01 to 5.0 parts by weight of high molecular weight polyethylene (a) having an intrinsic viscosity &eegr;A measured in tetralin at 135° C. of 15 to 100 dl/g, which is an ethylene homopolymer or an ethylene-olefin copolymer comprising at least 50 wt. % of ethylene polymerization units, and 100 parts by weight of olefin (co)polymer (b) other than the high molecular weight polyethylene. The polyethylene-based polymer (II) has an intrinsic viscosity &eegr;II measured in tetralin at 135° C. of 0.10 to 10 dl/g, which is an ethylene homopolymer or an ethylene copolymer comprising at least 50 wt. % of ethylene polymerization units. Thus, the present invention provides a polypropylene-based olefin (co)polymer composition having excellent formability that is suitable for thermoforming such as vacuum forming and pressure forming, blow molding and foam molding, especially suitable for thermoforming.

摘要翻译： 本发明的烯烃（共）聚合物组合物包含99至70wt。 ％的烯烃（共）聚合物（I）和1至30wt。 ％的聚乙烯类聚合物（II）。 烯烃（共）聚合物（I）包含0.01至5.0重量份在135℃下在四氢化萘中测量的特性粘度etaA为15至100dl / g的高分子量聚乙烯（a），其为乙烯均聚物 或包含至少50重量％的乙烯 - 烯烃共聚物。 ％的乙烯聚合单元和100重量份的除了高分子量聚乙烯之外的烯烃（共）聚合物（b）。 聚乙烯基聚合物（II）在135℃的四氢化萘中测得的特性粘度等于0.10-10dl / g，其为乙烯均聚物或乙烯共聚物，其包含至少50wt。 ％的乙烯聚合单元。 因此，本发明提供了一种具有优异成形性的聚丙烯基烯烃（共）聚合物组合物，其适用于诸如真空成型和压力成形，吹塑和泡沫模塑之类的热成型，特别适用于热成型。

公开(公告)号：US06699421B2

公开(公告)日：2004-03-02

申请号：US10140067

申请日：2002-05-08

申请人： Ken Shimizu ,  Yuuichi Yamanaka ,  Hiroyuki Maehara

发明人： Ken Shimizu ,  Yuuichi Yamanaka ,  Hiroyuki Maehara

IPC分类号： C08J936

CPC分类号： C08J9/141 ,  C08J2201/03 ,  C08J2323/12 ,  C08L23/06 ,  C08L23/10 ,  C08L2203/14 ,  C08L2666/04

摘要： Provided are a method for forming a foamed polypropylene resin sheet in which draw down and waving are not caused in heating the foamed sheet and in which inferior appearance such as partial thickness and wrinkles is not produced on the product, and a foamed formed article having an excellent shape obtained from the same. The method comprises a heating step for heating and softening the foamed polypropylene resin sheet and a forming step for bringing the heated foamed polypropylene resin sheet into contact with a forming mold to form it into a prescribed shape, wherein the foamed polypropylene resin sheet has an expansion ratio of 1.1 to 6 times, an open cell rate of 70% or less and a sheet thickness of 0.5 to 5 mm; and the foamed polypropylene resin sheet described above is heated in the heating step in the state that it is supported on a tabular sheet support.

摘要翻译： 提供一种形成发泡聚丙烯树脂片的方法，其中在发泡片材加热时不引起拉伸和挥动，并且在产品上不产生不良外观如部分厚度和皱纹，并且具有 从同样的优异形状。 该方法包括用于加热和软化发泡聚丙烯树脂片的加热步骤和使加热的发泡聚丙烯树脂片与成形模接触以形成规定形状的成形步骤，其中发泡聚丙烯树脂片具有膨胀 比例为1.1〜6倍，开孔率为70％以下，板厚为0.5〜5mm; 并且在加热步骤中将上述发泡聚丙烯树脂片材加热到支撑在片状片材载体上的状态。