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1. 发明授权

US08088835B2 Method for producing expansion-molded polypropylene-based resin article 有权
标题翻译：膨胀型聚丙烯类树脂制品的制造方法
公开(公告)号：US08088835B2
公开(公告)日：2012-01-03
申请号：US11659674
申请日：2005-07-27
申请人： Tomonori Iwamoto , Takayuki Gouda
发明人： Tomonori Iwamoto , Takayuki Gouda
IPC分类号： B29C44/34 , C08F110/00 , C08F210/00 , C08J9/16 , C08J9/22
CPC分类号： C08J9/232 , B29C44/445 , C08J2323/10 , C08L23/10 , C08L2203/14
摘要： It is an object of the present invention to provide a method for easily and economically producing an expansion-molded polypropylene-based resin article stably with a high porosity, that has continuous voids and that can be used as materials such as a sound absorbing material and a draining material. More specifically, the present invention relates to a method for producing an expansion-molded polypropylene-based resin article, in which a mold is filled with expanded polypropylene-based resin particles, and the expanded particles are heated and fused using water vapor, and then cooled, wherein expanded polypropylene-based resin particles are used in which a polypropylene-based resin having a melt index (MI) of not less than 0.1 g/10 minutes and not more than 9 g/10 minutes is used as a base resin, a cell size is not more than 150 μm, two melting peaks are present on a DSC curve obtained by differential scanning calorimetry, and β/(α+β) is not less than 0.35 and not more than 0.75 when taking a melting calorie at the lower temperature peak as α (J/g) and taking a melting calorie at the higher temperature peak as β (J/g), and a porosity of an obtained molded article is not less than 20% and not more than 50%.
摘要翻译：本发明的目的是提供一种容易且经济地制造具有高孔隙率的稳定地发泡成型的聚丙烯类树脂制品的方法，该方法具有连续的空隙，并且可以用作诸如吸声材料的材料，排水材料。更具体地说，本发明涉及一种发泡聚丙烯类树脂制品的制造方法，其中模具填充有发泡聚丙烯基树脂颗粒，并且使用水蒸气加热和熔融发泡颗粒，然后使用其中使用熔融指数（MI）不小于0.1g / 10分钟且不大于9g / 10分钟的聚丙烯基树脂作为基础树脂的发泡聚丙烯基树脂颗粒，单元尺寸不大于150μm，通过差示扫描量热法获得的DSC曲线上存在两个熔融峰，并且当获得熔融卡路里时，＆bgr / /（α+＆bgr））不小于0.35且不大于0.75 在较低的温度峰值为α（J / g），并将较高温度峰值的溶解热量作为＆bgr; （J / g），所得成型体的孔隙率为20％以上且50％以下。

2. 发明申请

US20070270516A1 Method for Producing Expansion-Molded Polyproylene-Based Resin Article 有权
标题翻译：膨胀型聚丙烯基树脂生产方法
公开(公告)号：US20070270516A1
公开(公告)日：2007-11-22
申请号：US11659674
申请日：2005-07-27
申请人： Tomonori Iwamoto , Takayuki Gouda
发明人： Tomonori Iwamoto , Takayuki Gouda
IPC分类号： C08J9/22
CPC分类号： C08J9/232 , B29C44/445 , C08J2323/10 , C08L23/10 , C08L2203/14
摘要： It is an object of the present invention to provide a method for easily and economically producing an expansion-molded polypropylene-based resin article stably with a high porosity, that has continuous voids and that can be used as materials such as a sound absorbing material and a draining material. More specifically, the present invention relates to a method for producing an expansion-molded polypropylene-based resin article, in which a mold is filled with expanded polypropylene-based resin particles, and the expanded particles are heated and fused using water vapor, and then cooled, wherein expanded polypropylene-based resin particles are used in which a polypropylene-based resin having a melt index (MI) of not less than 0.1 g/10 minutes and not more than 9 g/10 minutes is used as a base resin, a cell size is not more than 150 μm, two melting peaks are present on a DSC curve obtained by differential scanning calorimetry, and β/(α+β) is not less than 0.35 and not more than 0.75 when taking a melting calorie at the lower temperature peak as α (J/g) and taking a melting calorie at the higher temperature peak as β (J/g), and a porosity of an obtained molded article is not less than 20% and not more than 50%.
摘要翻译：本发明的目的是提供一种容易且经济地制造具有高孔隙率的稳定地发泡成型的聚丙烯类树脂制品的方法，该方法具有连续的空隙，并且可以用作诸如吸声材料的材料，排水材料。更具体地说，本发明涉及一种发泡聚丙烯类树脂制品的制造方法，其中模具填充有发泡聚丙烯基树脂颗粒，并且使用水蒸气加热和熔融发泡颗粒，然后使用其中使用熔融指数（MI）不小于0.1g / 10分钟且不大于9g / 10分钟的聚丙烯基树脂作为基础树脂的发泡聚丙烯基树脂颗粒，电池尺寸不超过150μm，通过差示扫描量热法获得的DSC曲线上存在两个熔融峰，当在该温度下采用熔化热量时，β/（α+β）不小于0.35且不大于0.75 较低的温度峰值为α（J / g），并将较高温度峰值的熔化热量作为β（J / g），所得成型品的孔隙率不小于20％且不大于50％。

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