ANTISTATIC NON-CROSSLINKED FOAMED POLYETHYLENE RESIN PARTICLES AND MOLDED NON-CROSSLINKED FOAMED POLYETHYLENE RESIN BODY
    81.
    发明申请
    ANTISTATIC NON-CROSSLINKED FOAMED POLYETHYLENE RESIN PARTICLES AND MOLDED NON-CROSSLINKED FOAMED POLYETHYLENE RESIN BODY 有权
    抗静电非交联泡沫聚乙烯树脂颗粒和模塑非交联泡沫聚乙烯树脂体

    公开(公告)号:US20140138868A1

    公开(公告)日:2014-05-22

    申请号:US14232687

    申请日:2012-07-13

    Abstract: Provided are non-crosslinked foamed polyethylene resin particles that have a bulk density BD of 10 g/L or more and 100 g/L or less and are obtained by foaming polyethylene resin particles containing an antistatic agent in an amount of 0.1 part by weight or more and 3 parts by weight or less with respect to 100 parts by weight of a polyethylene resin and having a density of 0.920 g/cm3 or more and less than 0.940 g/cm3, and the non-crosslinked foamed polyethylene resin particles have a shrinkage ratio of 3% or more and 30% or less determined in accordance with Formula (1). The non-crosslinked foamed polyethylene resin particles can simply afford an antistatic molded non-crosslinked foamed polyethylene resin body that has a small shrinkage ratio with respect to mold dimension, is deformed in a small degree, and has good surface stretch.

    Abstract translation: 本发明提供堆积密度BD为10g / L以上且100g / L以下的非交联发泡聚乙烯树脂颗粒,其通过使含有0.1重量份抗静电剂的聚乙烯树脂颗粒发泡得到,或者 相对于100重量份的聚乙烯树脂为3重量份以下,密度为0.920g / cm 3以上且小于0.940g / cm 3以下,非交联发泡聚乙烯树脂粒子的收缩率 根据式(1)确定3%以上且30%以下的比例。 非交联发泡聚乙烯树脂颗粒可以简单地提供相对于模具尺寸具有小收缩率的抗静电成型非交联泡沫聚乙烯树脂体,在很小程度上变形,并具有良好的表面拉伸。

    POLYLACTIC ACID-BASED RESIN FOAMED PARTICLES FOR IN-MOLD FOAM-MOLDING AND METHOD FOR PRODUCING THE SAME, AS WELL AS METHOD FOR PRODUCING POLYLACTIC ACID-BASED RESIN FOAM-MOLDED ARTICLE
    82.
    发明申请
    POLYLACTIC ACID-BASED RESIN FOAMED PARTICLES FOR IN-MOLD FOAM-MOLDING AND METHOD FOR PRODUCING THE SAME, AS WELL AS METHOD FOR PRODUCING POLYLACTIC ACID-BASED RESIN FOAM-MOLDED ARTICLE 有权
    用于模内泡沫模塑的聚酰胺酸树脂泡沫颗粒及其生产方法,以及用于生产基于聚酰胺酸树脂的泡沫塑料制品的方法

    公开(公告)号:US20100136338A1

    公开(公告)日:2010-06-03

    申请号:US12593293

    申请日:2008-03-27

    Abstract: The present invention provides a method for producing polylactic acid-based resin foamed particles for in-mold foam-molding from which a polylactic acid-based resin foam-molded article excellent in heat resistance and mechanical strength can be obtained by in-mold foam-molding. In the method of the present invention for producing polylactic acid-based resin foamed particles for in-mold foam-molding, a rotary blade is rotated at a given rotation speed while being always in contact with the front end surface of a nozzle and a polylactic acid-based resin extrudate extrusion-foamed through a nozzle is cut with the rotary blade, so that it is possible to cut the polylactic acid-based resin extrudate surely to obtain substantially spherical polylactic acid-based resin foamed particles. Therefore, when polylactic acid-based resin foamed particles are used for in-mold foam-molding, the polylactic acid-based resin foamed particles foam uniformly in all directions and, as a result, the foamed particles are thermal fusin bonded to unite together strongly in all direction.

    Abstract translation: 本发明提供了一种用于模内发泡成型的聚乳酸类树脂发泡粒子的制造方法,通过模内发泡成型法可以获得耐热性和机械强度优异的聚乳酸类树脂发泡成型体, 成型。 在本发明的用于模内发泡成型的聚乳酸类树脂发泡粒子的制造方法中,旋转刀片以一定的转速旋转,同时始终与喷嘴的前端面接触,聚乳酸 通过旋转刀片切割通过喷嘴挤出发泡的酸性树脂挤出物,从而可以确切地切割聚乳酸类树脂挤出物,以获得基本上为球形的聚乳酸类树脂发泡颗粒。 因此,当聚乳酸类树脂发泡粒子用于模内发泡成型时,聚乳酸类树脂发泡粒子在各个方向均匀发泡,结果发泡粒子结合成团聚强度 在所有方向。

    Polyamide pre-expanded particles, and polyamide foam molded article and method of producing the same

    公开(公告)号:US11884818B2

    公开(公告)日:2024-01-30

    申请号:US17266612

    申请日:2019-07-31

    CPC classification number: C08L77/06 C08J9/232 C08J2201/034 C08J2377/06

    Abstract: Polyamide pre-expanded particles of this disclosure have a peak temperature of a maximum endothermic peak of 150-275° C. on a DSC curve obtained while being heated from 30° C. to 280° C. at a heating rate of 10° C./min using a DSC. The width of the peak is 30-80° C. when a straight line approximating the DSC curve on a high-temperature side relative to the peak after an end of melting is used as a baseline. The width corresponds to a difference between an extrapolated melting start temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a low-temperature side and the baseline, and an extrapolated melting end temperature which is a temperature at an intersection point between a tangent line at an inflection point of the peak on a high-temperature side and the baseline.

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