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1. 发明授权

US06936200B2 Plastic wood fiber foam structure and method of producing same 失效
标题翻译：塑木纤维泡沫结构及其制造方法
公开(公告)号：US06936200B2
公开(公告)日：2005-08-30
申请号：US10005365
申请日：2001-12-07
申请人： Chul B. Park , Ghaus M. Rizvi , Haiou Zhang
发明人： Chul B. Park , Ghaus M. Rizvi , Haiou Zhang
IPC分类号： B27N1/00 , B27N3/00 , B27N3/28 , B29C44/12 , B29C47/00 , B29C47/10 , B29C47/50 , C08J9/00 , B29C44/22
CPC分类号： B29C47/0004 , B27N1/00 , B27N3/005 , B27N3/28 , B29C44/12 , B29C47/0014 , B29C47/1018 , B29C47/1045 , B29C47/366 , B29C47/369 , B29C47/50 , B29K2105/06 , B29K2105/16 , C08J9/0085 , C08J2201/03
摘要： A process for producing plastic/wood fiber composite foamed structures includes the steps of pre-drying wood fiber filler; mixing it with plastic to form a mixture; feeding the mixture into an extruder; introducing and mixing a blowing agent; subject the mixture to high shear forces and extruding the mixture to produce a plastic/wood fiber composite foamed structure. The filler has a degradation temperature and an active volatization temperature. During the pre-drying step the temperature is maintained below the degradation temperature. During the mixing step the mixing temperature is maintained below the active volatilizing temperature. During the introducing and mixing step a blowing agent is introduced into the plastic/wood fiber mixture and is mixed therewith to produce a plastic/wood fiber/gas mixture. During the subjecting step the plastic/wood fiber/gas mixture is subjected to high shear forces in the presence of high pressures and the temperature is maintained below an active volatilizing temperature.
摘要翻译：一种生产塑料/木纤维复合泡沫结构的方法包括：预干燥木纤维填料; 将其与塑料混合以形成混合物; 将混合物进料到挤出机中; 引入和混合发泡剂; 使混合物具有高剪切力并挤出混合物以产生塑料/木纤维复合泡沫结构。填料具有降解温度和活性挥发温度。在预干燥步骤期间，将温度保持在降解温度以下。在混合步骤中，混合温度保持低于活性挥发温度。在引入和混合步骤期间，将发泡剂引入塑料/木纤维混合物中并与其混合以产生塑料/木纤维/气体混合物。在处理步骤期间，塑料/木纤维/气体混合物在高压存在下经受高剪切力，并将温度保持在活性挥发温度以下。

2. 发明授权

US5866053A Method for providing continuous processing of microcellular and supermicrocellular foamed materials 失效
公开(公告)号：US5866053A
公开(公告)日：1999-02-02
申请号：US782955
申请日：1997-01-13
申请人： Chul B. Park , Nam P. Suh , Daniel F. Baldwin
发明人： Chul B. Park , Nam P. Suh , Daniel F. Baldwin
IPC分类号： B29C44/34 , B29C44/46 , B29C44/20
CPC分类号： B29C44/461 , B29C44/348
摘要： An extrusion system for providing a foamed material in which a material such as a polymer material is supplied to an extruder for movement through a rotating screw member. The material is placed in a molten state and a foaming agent, such as a supercritical fluid, is introduced into the extruder at a selected pressure so that a two-phase mixture of the molten material and the foaming agent is formed. The foaming agent is then diffused into and dissolved in the molten material to form a single-phase solution which is forwarded from a solution formation to a nucleation device. A thermodynamic instability is induced through a rapid pressure drop, e.g., higher than 0.9 GPa/s in the nucleation device to nucleate microcells in the solution. A further shaping device, e.g., a die, can be used to produce a foamed material of a desired shape.

3. 发明授权

US6103153A Production of foamed low-density polypropylene by rotational molding 有权
标题翻译：通过旋转成型生产泡沫低密度聚丙烯
公开(公告)号：US6103153A
公开(公告)日：2000-08-15
申请号：US324047
申请日：1999-06-02
申请人： Chul B. Park , Guobin Liu , Fangyi Liu , Remon Pop-Iliev , Salvatore D'Uva , Benjamin Zhang
发明人： Chul B. Park , Guobin Liu , Fangyi Liu , Remon Pop-Iliev , Salvatore D'Uva , Benjamin Zhang
IPC分类号： B29C41/04 , B29C41/52 , B29C44/34 , B29C67/20 , C08J9/10 , B29D9/00 , C08J9/34
CPC分类号： B29C44/3453 , B29C41/04 , B29C41/52 , B29C44/3446 , B29C67/205 , C08J9/101 , C08J9/103 , B29K2023/12 , C08J2323/12
摘要： Compositions and processing conditions are disclosed for the production by rotomolding of polypropylene foams, hither to satisfactorily produced only by injection molding and extrusion molding. Rheological properties of the polypropylene resin, processing conditions and choice of composition of the chemical blowing agent were found to play important roles in obtaining high quality polypropylene foam structures. High strength fine-cell polypropylene foams could in particular be formed by first melt compounding a suitable chemical blowing agent with the resin under conditions which allow for homogeneous mixing without appreciable decomposition of the blowing agent.
摘要翻译：公开了组合物和加工条件，用于通过聚丙烯泡沫塑料的生产来生产，只有通过注射成型和挤出成型令人满意地生产。发现聚丙烯树脂的流变性能，加工条件和化学发泡剂组成的选择在获得高质量聚丙烯泡沫结构中起重要作用。特别可以通过在允许均匀混合而不明显分解发泡剂的条件下首先将合适的化学发泡剂与树脂熔融混合而形成高强度细胞聚丙烯泡沫。

4. 发明授权

US6051174A Method for providing continuous processing of microcellular and supermicrocellular foamed materials 有权
标题翻译：提供微孔和超细胞泡沫材料的连续加工的方法
公开(公告)号：US6051174A
公开(公告)日：2000-04-18
申请号：US226907
申请日：1999-01-08
申请人： Chul B. Park , Nam P. Suh , Daniel F. Baldwin
发明人： Chul B. Park , Nam P. Suh , Daniel F. Baldwin
IPC分类号： B29C44/34 , B29C44/46 , B29C44/20
CPC分类号： B29C44/461 , B29C44/348
摘要： An extrusion system for providing a foamed material in which a material such as a polymer material is supplied to an extruder for movement through a rotating screw member. The material is placed in a molten state and a foaming agent, such as a supercritical fluid, is introduced into the extruder at a selected pressure so that a two-phase mixture of the molten material and the foaming agent is formed. The foaming agent is then diffused into and dissolved in the molten material to form a single-phase solution which is forwarded from a solution formation to a nucleation device. A thermodynamic instability is induced through a rapid pressure drop, e.g., higher than 0.9 GPa/s in the nucleation device to nucleate microcells in the solution. A further shaping device, e.g., a die, can be used to produce a foamed material of a desired shape.
摘要翻译：一种用于提供泡沫材料的挤出系统，其中将诸如聚合物材料的材料供应到挤出机以通过旋转螺杆构件运动。将材料置于熔融状态，将发泡剂如超临界流体以选定的压力引入挤出机中，从而形成熔融材料和发泡剂的两相混合物。然后将发泡剂扩散并溶解在熔融材料中以形成从溶液形式转移到成核装置的单相溶液。通过快速压降（例如在成核装置中高于0.9GPa / s）诱导热力学不稳定性以使溶液中的微细胞成核。可以使用另外的成型装置，例如模具来制造所需形状的泡沫材料。

5. 发明授权

US5158986A Microcellular thermoplastic foamed with supercritical fluid 失效
标题翻译：超细流体的微晶热塑性泡沫
公开(公告)号：US5158986A
公开(公告)日：1992-10-27
申请号：US682116
申请日：1991-04-05
申请人： Sung W. Cha , Nam P. Suh , Daniel F. Baldwin , Chul B. Park
发明人： Sung W. Cha , Nam P. Suh , Daniel F. Baldwin , Chul B. Park
IPC分类号： B29C44/34 , B29C45/00 , C08J9/12
CPC分类号： C08J9/122 , B29C44/3446 , B29C44/348 , C08J2201/03 , C08J2203/08 , Y10S264/05 , Y10S264/13
摘要： A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 10.sup.9 to about 10.sup.15 per cubic centimeter of the material can be achieved with the average cell sizes being at least less than 2.0 microns and preferably in a range from about 0.1 micron to about 1.0 micron.
摘要翻译：超细胞泡沫材料和这种材料的制造方法，将具有超临界流体（例如超临界状态的二氧化碳）的诸如聚合物材料的发泡材料引入到材料中以形成具有基本上分布在整个材料上的多个细胞。平均泡孔尺寸至少小于2.0微米，优选在约0.1微米至约1.0微米范围内，可以实现位于约109至约1015每立方厘米材料范围内的孔密度。

6. 发明申请

US20100285296A1 Apparatus and method for advanced structural foam molding 审中-公开
标题翻译：先进的结构发泡成型装置和方法
公开(公告)号：US20100285296A1
公开(公告)日：2010-11-11
申请号：US12799213
申请日：2010-04-19
申请人： Chul B. Park , Xiang Xu
发明人： Chul B. Park , Xiang Xu
IPC分类号： B32B3/26 , B29C47/00
CPC分类号： B29C44/421 , B29C44/3442 , B29C44/3469 , B29C48/0011 , B29C48/0012 , B29C48/295 , B29C48/387 , B29C48/475 , B29K2105/041 , Y10T428/249953
摘要： An advanced structural foam molding technology for improving the dispersion of the blowing agent in the polymer matrix has been invented. This technological innovation is an improvement on the well-known existing low-pressure structural foam molding technology based on the preplasticating-type (so called piggy-bag) injection-molding machines. By introducing means for continuing the polymer matrix melt flow stream, preferably an additional accumulator and a gear pump, the processing conditions become more consistent to disperse the injected gas more uniformly in the polymer matrix. By using this technology, the structural foams have a smaller cell size, a more uniform cell structure, a larger void fraction (i.e., more material saving), less surface swirl, and less weld line contrast.
摘要翻译：已经发明了用于改善发泡剂在聚合物基质中的分散性的先进的结构泡沫塑模技术。这种技术创新是对已知的现有的基于预塑型（即所谓的小袋）注塑机的低压结构泡沫成型技术的改进。通过引入用于连续聚合物基体熔体流动流的装置，优选地是额外的储存器和齿轮泵，加工条件变得更加一致以将注入的气体更均匀地分散在聚合物基质中。通过使用该技术，结构泡沫具有更小的泡孔尺寸，更均匀的泡孔结构，较大的空隙率（即更节省材料），更少的表面涡流和更少的焊接线对比度。

7. 发明授权

US06958365B2 Manufacturing process for open celled microcellular foam 失效
标题翻译：开孔微孔泡沫的制造工艺
公开(公告)号：US06958365B2
公开(公告)日：2005-10-25
申请号：US10436740
申请日：2003-05-13
申请人： Narasimharao Dontula , Jehuda Greener , Cathy A. Fleischer , Chul B. Park , Patrick C. Lee , Jin Wang , Hani E. Naguib
发明人： Narasimharao Dontula , Jehuda Greener , Cathy A. Fleischer , Chul B. Park , Patrick C. Lee , Jin Wang , Hani E. Naguib
IPC分类号： B29C44/34 , C08J9/00 , C08J9/12
CPC分类号： C08J9/0061 , B29C44/348 , B29K2105/045 , C08J2201/03 , C08J2205/05 , C08J2323/02 , C08J2425/00
摘要： The present invention relates to a method for making an open celled microcellular foam comprising providing at least one foamable polymer and a crosslinking agent in an extruder, injecting at least one blowing agent into said at least one foamable polymer and said crosslinking agent in said extruder, blending said blowing agent injected into said at least one foamable polymer and said crosslinking agent in said extruder, feeding said blended blowing agent, at least one foamable polymer and said crosslinking agent in said extruder to a die, and depressurizing said blended blowing agent, said at least one foamable polymer and said crosslinking agent.
摘要翻译：本发明涉及一种制备开孔微孔泡沫的方法，包括在挤出机中提供至少一种可发泡聚合物和交联剂，在所述挤出机中将至少一种发泡剂注入所述至少一种可发泡聚合物和所述交联剂中，将在所述挤出机中注入所述至少一种可发泡聚合物和所述交联剂中的所述发泡剂混合，将所述共混发泡剂，所述挤出机中的至少一种可发泡聚合物和所述交联剂进料到模具中，并将所述共混发泡剂减压，至少一种可发泡聚合物和所述交联剂。

8. 再颁专利

USRE37932E1 Supermicrocellular foamed materials 失效
标题翻译：超细胞泡沫材料
公开(公告)号：USRE37932E1
公开(公告)日：2002-12-10
申请号：US08692060
申请日：1996-08-02
申请人： Daniel F. Baldwin , Nam P. Suh , Chul B. Park , Sung W. Cha
发明人： Daniel F. Baldwin , Nam P. Suh , Chul B. Park , Sung W. Cha
IPC分类号： B32B2704
CPC分类号： C08J9/122 , B29C44/3446 , B29C44/348 , C08J2201/03 , C08J2203/08 , Y10S264/05 , Y10S264/13
摘要： A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 109 to about 1015 per cubic centimeter of the material can be achieved with the average cell sizes being at least less than 2.0 microns and preferably in a range from about 0.1 micron to about 1.0 micron.
摘要翻译：超细胞泡沫材料和这种材料的制造方法，将具有超临界流体（例如超临界状态的二氧化碳）的诸如聚合物材料的发泡材料引入到材料中以形成具有基本上分布在整个材料上的多个细胞。平均泡孔尺寸至少小于2.0微米，优选在约0.1微米至约1.0微米范围内，可以实现位于约109至约1015每立方厘米材料范围内的孔密度。

9. 发明授权

US5334356A Supermicrocellular foamed materials 失效
标题翻译：超细胞泡沫材料
公开(公告)号：US5334356A
公开(公告)日：1994-08-02
申请号：US934570
申请日：1992-08-24
申请人： Daniel F. Baldwin , Nam P. Suh , Chul B. Park , Sung W. Cha
发明人： Daniel F. Baldwin , Nam P. Suh , Chul B. Park , Sung W. Cha
IPC分类号： B29C44/34 , B29C45/00 , C08J9/12 , C08F2/00 , A21D13/00 , B28B1/50 , B29D1/00
CPC分类号： C08J9/122 , B29C44/3446 , B29C44/348 , C08J2201/03 , C08J2203/08 , Y10S264/05 , Y10S264/13
摘要： A supermicrocellular foamed material and a method for producing such material, the material to be foamed such as a polymerplastic material, having a supercritical fluid, such as carbon dioxide in its supercritical state, introduced into the material to form a foamed fluid/material system having a plurality of cells distributed substantially throughout the material. Cell densities lying in a range from about 10.sup.9 to about 10.sup.15 per cubic centimeter of the material can be achieved with the average cell sizes being at least less than 2.0 microns and preferably in a range from about 0.1 micron to about 1.0 micron.
摘要翻译：超细胞泡沫材料和这种材料的制造方法，将具有超临界流体（例如超临界状态的二氧化碳）的诸如聚合物材料的发泡材料引入到材料中以形成具有基本上分布在整个材料上的多个细胞。平均泡孔尺寸至少小于2.0微米，优选在约0.1微米至约1.0微米范围内，可以实现位于约109至约1015每立方厘米材料范围内的孔密度。

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