Expandable polylactic acid resin particles, expanded polylactic acid resin beads and molded article obtained from expanded polylactic acid resin beads
    11.
    发明授权
    Expandable polylactic acid resin particles, expanded polylactic acid resin beads and molded article obtained from expanded polylactic acid resin beads 有权
    可膨胀聚乳酸树脂颗粒,膨胀聚乳酸树脂珠和由膨胀聚乳酸树脂珠获得的模塑制品

    公开(公告)号:US07863343B2

    公开(公告)日:2011-01-04

    申请号:US11335663

    申请日:2006-01-20

    IPC分类号: C08J9/18 C08J9/32 C08J9/228

    摘要: Expandable polylactic acid resin particles including (a) a base resin containing a polylactic acid resin having at least 50 mol % of lactic acid monomer component units, (b) a polyolefin wax in an amount of 0.0001 to 1 part by weight per 100 parts by weight of the base resin, and (c) a blowing agent in an amount of 1 to 30% by weight based on the weight of the resin particles. The expandable resin particles can give expanded beads having an average cell diameter of 10 to 500 μm. The expanded beads can give in-mold foam moldings.

    摘要翻译: 可膨胀的聚乳酸树脂粒子,其包含(a)含有至少50摩尔%的乳酸单体成分单元的聚乳酸树脂的基础树脂,(b)0.0001〜1重量份/ 100重量份的聚烯烃蜡 基础树脂的重量,和(c)以树脂颗粒重量计为1〜30重量%的发泡剂。 可发泡树脂颗粒可以得到平均泡孔直径为10-500μm的发泡珠粒。 发泡珠可以提供模内泡沫模制品。

    Method of producing polystyrene-based resin foam street
    12.
    发明申请
    Method of producing polystyrene-based resin foam street 审中-公开
    生产聚苯乙烯树脂发泡街道的方法

    公开(公告)号:US20060022366A1

    公开(公告)日:2006-02-02

    申请号:US10901115

    申请日:2004-07-29

    IPC分类号: B29C44/20

    摘要: A method of producing a polystyrene-based resin foam sheet, including kneading a polystyrene-based resin and a physical blowing agent with heating in an extruder to obtain a foamable resin composition, and extruding the foamable composition through a die, wherein the physical blowing agent comprises 60 to 95 mole % of a first blowing agent selected from isobutane, n-pentane, isopentane and mixtures thereof and 5 to 40 mole % of a second blowing agent selected from water, carbon dioxide, ethers having a boiling point of 140° C. or lower, dialkylcarbonates having a boiling point of 140° C. or lower and mixtures thereof, and wherein the total mole % of the physical blowing agent is equal to 100 mole %.

    摘要翻译: 一种聚苯乙烯类树脂发泡体片的制造方法,其特征在于,在挤出机中加热捏合聚苯乙烯类树脂和物理发泡剂,得到发泡性树脂组合物,通过模头挤出所述发泡性组合物,其中,所述物理发泡剂 包含60至95摩尔%的选自异丁烷,正戊烷,异戊烷及其混合物的第一发泡剂和5至40摩尔%的选自水,二氧化碳,沸点为140℃的醚的第二发泡剂 或更低的沸点为140℃或更低的二烷基碳酸酯及其混合物,并且其中物理发泡剂的总摩尔%等于100摩尔%。

    Recording circuit employing AC biasing system
    14.
    发明授权
    Recording circuit employing AC biasing system 失效
    采用交流偏压系统的记录电路

    公开(公告)号:US4333114A

    公开(公告)日:1982-06-01

    申请号:US100140

    申请日:1979-12-04

    申请人: Hajime Ohta

    发明人: Hajime Ohta

    CPC分类号: G11B5/03

    摘要: A magnetic recording head, a resistor, a capacitor and another resistor are connected in series to form a bridge circuit arranged to satisfy the condition Ra.multidot.Rb=L/C, wherein Ra and Rb represent the resistance values of the resistors, respectively, L represents the inductance value of the magnetic recording head, and C represents the capacitance value of the capacitor. A recording signal is applied across a first pair of opposite junctions of the bridge circuit, and an AC biasing signal to be used in recording the recording signal is applied across a second pair of opposite junctions of this bridge circuit.

    摘要翻译: 磁记录头,电阻器,电容器和另一个电阻器串联连接以形成满足条件RaxRb = L / C的桥式电路,其中Ra和Rb分别代表电阻器的电阻值,L代表 磁记录头的电感值,C表示电容器的电容值。 记录信号施加在桥接电路的第一对相对接点上,并且用于记录记录信号的AC偏置信号被施加在该桥接电路的第二对相对接点上。