公开(公告)号：US5292465A

公开(公告)日：1994-03-08

申请号：US980741

申请日：1992-11-24

申请人： Tosio Kobayashi ,  Mitsuru Watari ,  Toru Inoue

发明人： Tosio Kobayashi ,  Mitsuru Watari ,  Toru Inoue

IPC分类号： B29C44/04 ,  B29C44/14 ,  B29C67/22

CPC分类号： B29C44/04 ,  B29C44/10 ,  B29C44/146 ,  B29K2023/12

摘要： A process for preparing a composite foamed molded article according to the invention includes the steps of setting a skin material in the vicinity of an upper mold for stamping-mold kept at a temperature of 10 to 50.degree. C.; feeding a molten polypropylene resin composition for a substrate containing a foaming agent kept at a temperature of not lower than a decomposition temperature of the foaming agent and within the range of 180 to 240.degree. C. onto a surface of a lower mold for stamping-mold kept at a temperature of 30 to 80.degree. C.; closing the mold within 10 seconds after feeding of the composition to clamp the molds at a pressure of 20 to 70 kg/cm.sup.2 ; lifting the upper mold before a thickness of each of hardened layers formed on both surfaces of the composition layer reaches 1.0 mm to open the mold at a distance between the upper mold and lower mold of 1.1 to 2 times of a thickness of a flat portion having neither boss nor rib in the composition layer, thereby to foam the composition; and cooling the foamed substrate layer made of the polypropylene resin composition to harden the substrate layer. The composite foamed molded articles thus obtained is lightweight and has high rigidity.

摘要翻译： 本发明的复合发泡成型体的制造方法包括将保持在10〜50℃的冲压模具的上模附近设置的表皮材料的工序。 将含有保持在发泡剂的分解温度以上的发泡剂的基材的熔融聚丙烯树脂组合物供给到180〜240℃的范围内的冲压模具的下模具的表面 保持在30至80摄氏度的温度。 在组合物供料10秒内关闭模具，以20至70kg / cm2的压力夹紧模具; 在形成在组合物层的两个表面上的每个硬化层的厚度达到1.0mm之前提起上模具，以在上模和下模之间的距离处打开模具的厚度为具有 组合物层中的老板或肋骨都不会发泡; 冷却由聚丙烯树脂组合物制成的发泡基材层，使基材层硬化。 这样得到的复合发泡成型品重量轻，刚性好。

公开(公告)号：US06730248B2

公开(公告)日：2004-05-04

申请号：US09988596

申请日：2001-11-20

申请人： Hideo Akimoto ,  Mitsuru Watari ,  Takashi Miyazaki ,  Tatsuji Kawamura

发明人： Hideo Akimoto ,  Mitsuru Watari ,  Takashi Miyazaki ,  Tatsuji Kawamura

IPC分类号： B29C4402

CPC分类号： B29C44/086 ,  Y10T428/249987 ,  Y10T428/249988 ,  Y10T428/249989 ,  Y10T428/249991 ,  Y10T428/249992 ,  Y10T428/249993

摘要： A process is provided for producing a foamed article of a thermoplastic resin composition having a relatively thicker solid skin layer exhibiting better appearance without occurrence of a swirl mark and having a foam structure of relatively uniform foam cell size with better foam cell configuration, which is light-weighing and superior in stiffness, in an easy and efficient manner, by causing the resin composition to foam up in a cavity of a mold.

摘要翻译： 提供了一种制造热塑性树脂组合物的发泡制品的方法，该热塑性树脂组合物具有较厚的固体表皮层，其表现出更好的外观而不产生旋转痕迹，并且具有泡沫泡沫尺寸相对均匀的具有较好泡沫泡孔构型的泡沫结构 通过使树脂组合物在模具的腔中发泡，以重量轻且优异的刚度，以简单有效的方式。

公开(公告)号：US4878972A

公开(公告)日：1989-11-07

申请号：US233541

申请日：1988-08-18

申请人： Katsutoshi Kaneko ,  Toshio Kobayashi ,  Mitsuru Watari

发明人： Katsutoshi Kaneko ,  Toshio Kobayashi ,  Mitsuru Watari

IPC分类号： B29C51/02 ,  B29C44/00 ,  B29C44/06 ,  B29C44/14 ,  B29C44/56 ,  B29C51/12 ,  B29C51/14 ,  B29C69/02 ,  B29K23/00 ,  B29K105/04 ,  B29L9/00 ,  B32B5/18 ,  B32B5/24 ,  B32B27/12

CPC分类号： B29C51/145 ,  B29C44/10 ,  B29C44/14 ,  B32B27/12 ,  B29K2023/00 ,  B29K2105/04 ,  B29K2105/0854 ,  B29K2105/253 ,  B29L2009/00 ,  B29L2031/30 ,  B29L2031/3005 ,  B29L2031/7322 ,  Y10T156/1044 ,  Y10T156/1048 ,  Y10T428/249981

摘要： A process for preparing a two-ply foam molded article, characterized by heating a foamable polyolefin sheet which is in its not yet foamed state to form a foamed polyolefin layer, integrally laminating a fabric on one side of the resulting foamed polyolefin layer which is still in a melted and softened state to form a laminate and simultaneously draw-forming the resulting laminate to shape the two-ply foam molded article.