Method of obtaining a gas-introduced fiber-reinforced resin injection
molding
    24.
    发明授权
    Method of obtaining a gas-introduced fiber-reinforced resin injection molding 失效
    获得导入纤维增强树脂注射成型的方法

    公开(公告)号:US6165396A

    公开(公告)日:2000-12-26

    申请号:US73908

    申请日:1998-05-07

    摘要: The present invention is directed to a method of obtaining a gas-introduced fiber-reinforced resin injection molding and to a molding obtained by the method. According to the present invention, there can be obtained a lightweight gas-introduced fiber-reinforced resin injection molding containing glass fibers or like fibers having excellent rigidity and strength and improved surface properties. The method includes the steps of: injecting into a die a molten resin obtained through the plasticization of a molding material; and introducing gas into the molten resin, the molding material comprising fiber-containing thermoplastic resin pellets which contain reinforcing fibers having a length of 2 mm to 100 mm, the reinforcing fibers accounting for 5% to 70% by weight of the molding material, the die including a movable die capable of advancing into and retracting from the internal cavity of the die, wherein after the injection of the molten resin into the die cavity is started, the movable die is retracted to a position where the die cavity assumes a volume corresponding to the molding, and gas is introduced into the molten resin filling the die cavity.

    摘要翻译: 本发明涉及一种获得引入气体的纤维增强树脂注射成型体的方法和通过该方法得到的成型体。 根据本发明,可以获得具有优异的刚度和强度以及改进的表面性能的玻璃纤维或类似纤维的轻质导气纤维增强树脂注射成型体。 该方法包括以下步骤:向模具注入通过模塑材料增塑而获得的熔融树脂; 并且将气体引入熔融树脂中,所述成型材料包含含纤维的热塑性树脂颗粒,其含有长度为2mm至100mm的增强纤维,所述增强纤维占成型材料的5重量%至70重量%, 其包括能够从模具的内腔前进和退出的活动模具,其中在将熔融树脂注入模腔之后开始,可动模具缩回到模腔呈相当体积的位置 并将气体引入填充模腔的熔融树脂中。

    Method of molding a fiber-reinforced resin laminate and a laminated
molding
    25.
    发明授权
    Method of molding a fiber-reinforced resin laminate and a laminated molding 失效
    纤维增强树脂层压体的成型方法和层叠成形体

    公开(公告)号:US6099949A

    公开(公告)日:2000-08-08

    申请号:US073988

    申请日:1998-05-07

    摘要: Disclosed is a method of molding a fiber-reinforced resin laminate which can manufacture a lightweight laminated molding having excellent mechanical characteristics regardless of the shape of a molding, which can readily unite a surface coat material and a molding while the surface coat material is held in good condition, and which can impart excellent appearance to a laminated molding. Also disclosed is a laminated molding manufactured by the method. The method uses a molding material which contains fiber-containing thermoplastic resin pellets which, in turn, contain reinforcing fibers having a length of 2 mm to 100 mm. The reinforcing fibers account for 5% to 70% by weight of the molding material. A molten resin obtained through the plasticization of the molding material is injected into a die, onto which a surface coat material for covering the surface of a molding is previously attached. After injection of the molten resin into the die cavity is started, a movable die is advanced so as to compress the molten resin contained in the die cavity, followed by expansion of the volume of the die cavity to that of an intended molding.

    摘要翻译: 公开了一种成型纤维增强树脂层压体的方法,其可以制造具有优异的机械特性的轻质层压成型体,而不管成型体的形状如何,其可以容易地将表面涂层材料和成型体一起保持在表面涂层材料 良好的条件,并且可以赋予层压成型品优异的外观。 还公开了通过该方法制造的层压成型体。 该方法使用含有含纤维的热塑性树脂粒料的成型材料,其又含有长度为2mm〜100mm的增强纤维。 增强纤维占成型材料的5〜70重量%。 将通过成型材料的塑化而获得的熔融树脂注入模具中,预先安装用于覆盖模制品表面的表面涂层材料。 在将熔融树脂注射到模腔中之后,可移动的模具前进,以压缩模腔中所含的熔融树脂,随后将模腔的体积扩大到预定模制品的体积。

    Polyolefin composition
    27.
    发明授权
    Polyolefin composition 失效
    聚烯烃组合物

    公开(公告)号:US4990554A

    公开(公告)日:1991-02-05

    申请号:US355604

    申请日:1989-05-23

    摘要: A polyolefin composition is disclosed, which comprises a polyolefin and an inorganic filler, wherein the polyolefin composition comprising (A) 75 to 97% by weight of a polyolefin component comprising (a) 90-65 parts by weight of a polymer composition comprising a crystalline polypropylene component and an ethylene-propylene random copolymer component and having an ethylene content of 7% by weight or less and/or a propylene homopolymer and (b) 10 to 35 parts by weight of a polyethylene having a melt index of not lower than 10 g/10 min., said melt index being from 1.0 to 50 times that of the polymer (a), and (B) 25 to 3% by weight of a fibrous inorganic filler having an average fiber diameter of 0.1 to 0.8 micrometer and an aspect ratio of 20 to 60.The polyolefin composition is capable of providing, upon molding, articles having good surface appearance, in particular glossiness and improved mechanical strengths with less warping and deformation.

    摘要翻译: 公开了一种聚烯烃组合物,其包含聚烯烃和无机填料,其中所述聚烯烃组合物包含(A)75至97重量%的聚烯烃组分,其包含(a)90-65重量份的包含结晶 聚丙烯组分和乙烯 - 丙烯无规共聚物组分,乙烯含量为7重量%以下,和/或丙烯均聚物,和(b)10-35重量份熔体指数不低于10的聚乙烯 g / 10分钟,所述熔体指数为聚合物(a)的1.0〜50倍,(B)为平均纤维直径为0.1〜0.8微米的纤维状无机填料的25〜3重量% 长宽比为20至60.聚烯烃组合物能够在模制时提供具有良好表面外观,特别是光泽度和改进的机械强度并且具有较少翘曲和变形的制品。