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1. 发明授权

US5330596A Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap 失效
标题翻译：回收阻隔聚苯乙烯泡沫废料和阻隔聚苯乙烯泡沫塑料回收阻隔聚苯乙烯泡沫废料
公开(公告)号：US5330596A
公开(公告)日：1994-07-19
申请号：US882216
申请日：1992-05-13
申请人： Gerald G. Gusavage , Thomas A. Hessen , Thomas R. Hardy , Henry G. Schirmer , Susan R. Flye
发明人： Gerald G. Gusavage , Thomas A. Hessen , Thomas R. Hardy , Henry G. Schirmer , Susan R. Flye
IPC分类号： B29B9/04 , B29B17/00 , B29B17/04 , B29K23/00 , B29K25/00 , B29K29/00 , B29K61/04 , B29K63/00 , B29K75/00 , B29K77/00 , B29K79/00 , B29K105/04 , B29K105/26 , B32B5/18 , B32B7/10 , B32B27/08 , B32B27/28 , B32B27/30 , B32B27/34 , B32B27/38 , B32B27/40 , B32B27/42 , B32B37/15 , B32B3/26
CPC分类号： B29B17/04 , B32B5/18 , B29K2025/00 , B29K2029/00 , B29K2105/04 , B29K2995/0067 , B29K2995/0069 , B29L2007/008 , B29L2009/00 , B29L2031/712 , Y02W30/625 , Y10T428/1376 , Y10T428/249953 , Y10T428/249981 , Y10T428/249986 , Y10T428/249991 , Y10T428/249992
摘要： A barrier foam tray contains recycled reclaim of barrier foam. The tray comprises a sheet of foamed polystyrene (PS) having laminated to it a flexible barrier film. The foamed polystyrene part can have admixed therein from 0.0001% up to 30% by weight of the flexible barrier film. The barrier film contains a barrier polymer such as ethylene vinyl alcohol copolymer (EVOH). The tray is made by grinding laminate scrap and extruding reclaim therefrom with virgin polystyrene.
摘要翻译：阻隔泡沫托盘包含再循环回收阻隔泡沫。托盘包括一层泡沫聚苯乙烯（PS），其上层压有柔性阻挡膜。发泡聚苯乙烯部分可以在其中混入0.0001％至30％重量的柔性阻挡膜。阻挡膜含有阻隔聚合物如乙烯乙烯醇共聚物（EVOH）。托盘通过研磨层压废料制成，并用原始聚苯乙烯从其中回收。

2. 发明授权

US5118561A Recycling of barrier polystyrene foam scrap and barrier polystyrene foam containing recycled barrier polystyrene foam scrap 失效
标题翻译：回收阻隔聚苯乙烯泡沫废料和阻隔聚苯乙烯泡沫塑料回收阻隔聚苯乙烯泡沫废料
公开(公告)号：US5118561A
公开(公告)日：1992-06-02
申请号：US590892
申请日：1990-10-01
申请人： Gerald G. Gusavage , Thomas A. Hessen , Thomas R. Hardy , Susan R. Flye , Henry G. Schirmer
发明人： Gerald G. Gusavage , Thomas A. Hessen , Thomas R. Hardy , Susan R. Flye , Henry G. Schirmer
IPC分类号： B29B9/04 , B29B17/00 , B29B17/04 , B29K23/00 , B29K25/00 , B29K29/00 , B29K61/04 , B29K63/00 , B29K75/00 , B29K77/00 , B29K79/00 , B29K105/04 , B29K105/26 , B32B5/18 , B32B7/10 , B32B27/08 , B32B27/28 , B32B27/30 , B32B27/34 , B32B27/38 , B32B27/40 , B32B27/42 , B32B37/15
CPC分类号： B29B17/04 , B32B5/18 , B29K2025/00 , B29K2029/00 , B29K2105/04 , B29K2995/0067 , B29K2995/0069 , B29L2007/008 , B29L2009/00 , B29L2031/712 , Y02W30/625 , Y10T428/1376 , Y10T428/249953 , Y10T428/249981 , Y10T428/249986 , Y10T428/249991 , Y10T428/249992
摘要： A barrier foam tray contains recycled reclaim of barrier foam. The tray comprises a sheet of foamed polystyrene (PS) having laminated to it a flexible barrier film. The foamed polystyrene part can have admixed therein from 0.0001% up to 30% by weight of the flexible barrier film. The barrier film contains a barrier polymer such as ethylene vinyl alcohol copolymer (EVOH). The tray is made by grinding laminate scrap and extruding reclaim therefrom with virgin polystyrene.
摘要翻译：阻隔泡沫托盘包含再循环回收阻隔泡沫。托盘包括一层泡沫聚苯乙烯（PS），其上层压有柔性阻挡膜。发泡聚苯乙烯部分可以在其中混入0.0001％至30％重量的柔性阻挡膜。阻挡膜含有阻隔聚合物如乙烯乙烯醇共聚物（EVOH）。托盘通过研磨层压废料制成，并用原始聚苯乙烯从其中回收。

3. 发明授权

US5994420A Foam and process for producing a carbon dioxide blowing agent 失效
标题翻译：发泡剂和二氧化碳发泡剂的制造方法
公开(公告)号：US5994420A
公开(公告)日：1999-11-30
申请号：US968672
申请日：1997-11-12
申请人： Gerald G. Gusavage , Henry G. Schirmer , Thomas A. Hessen
发明人： Gerald G. Gusavage , Henry G. Schirmer , Thomas A. Hessen
IPC分类号： B32B5/18 , C08J9/00 , C08J9/12 , C08J9/08
CPC分类号： C08J9/122 , B32B5/18 , C08J9/0014 , C08J9/0061 , C08J2201/03 , C08J2203/02 , C08J2323/02 , C08J2483/00 , C08J2483/04
摘要： The present invention provides a process for producing thermoplastic foam, including:(a) melting a thermoplastic polymer to produce a polymer melt;(b) introducing a carbon dioxide blowing agent into the polymer melt;(c) adding to the polymer melt one or more additives selected from the group consisting of(1) polysiloxane, and(2) mineral oil; and(d) extruding and foaming the melted polymer melt, blowing agent, and one or more additives to produce thermoplastic foam.The resultant thermoplastic foam can be thermoformed into various foamed articles, such as foam packaging trays. The quality of foams made from a carbon dioxide blowing agent, and particularly 100% carbon dioxide, has been found to be substantially improved by adding one or more of the foregoing additives, i.e., polysiloxane, mineral oil and, optionally, polyolefin to the polymer melt during the extrusion and foaming process. Such foams have far less ruptured cells, surface cracks and corrugation than comparable foams made with a carbon dioxide blowing agent but which lack the additives of the present invention.
摘要翻译：本发明提供一种生产热塑性泡沫的方法，包括：（a）熔化热塑性聚合物以制备聚合物熔体; （b）将二氧化碳发泡剂引入聚合物熔体中; （c）向聚合物中加入一种或多种选自（1）聚硅氧烷和（2）矿物油的添加剂; 和（d）挤出和发泡熔融的聚合物熔体，发泡剂和一种或多种添加剂以产生热塑性泡沫。所得的热塑性泡沫可以热成型为各种泡沫制品，如泡沫包装托盘。通过向聚合物中加入一种或多种上述添加剂即聚硅氧烷，矿物油和任选的聚烯烃，已经发现通过二氧化碳发泡剂，特别是100％二氧化碳制成的泡沫的质量得到显着改善在挤出和发泡过程中熔化。与使用二氧化碳发泡剂制成但不含本发明添加剂的可比泡沫相比，这种泡沫具有远少破裂的细胞，表面裂纹和波纹。

4. 发明授权

US5670552A Foam and process for producing foam using a carbon dioxide blowing agent 失效
标题翻译：泡沫和使用二氧化碳发泡剂生产泡沫的方法
公开(公告)号：US5670552A
公开(公告)日：1997-09-23
申请号：US573812
申请日：1995-12-18
申请人： Gerald G. Gusavage , Henry G. Schirmer , Thomas A. Hessen
发明人： Gerald G. Gusavage , Henry G. Schirmer , Thomas A. Hessen
IPC分类号： B32B5/18 , C08J9/00 , C08J9/12 , C08J9/08
CPC分类号： C08J9/122 , B32B5/18 , C08J9/0014 , C08J9/0061 , C08J2201/03 , C08J2203/02 , C08J2323/02 , C08J2483/00 , C08J2483/04
摘要： The present invention provides a process for producing thermoplastic foam, including: (a) melting a thermoplastic polymer to produce a polymer melt; (b) introducing a carbon dioxide blowing agent into the polymer melt; (c) adding to the polymer melt one or more additives selected from the group consisting of (1) polysiloxane, and (2) mineral oil; and (d) extruding and foaming the melted polymer melt, blowing agent, and one or more additives to produce thermoplastic foam. The resultant thermoplastic foam can be thermoformed into various foamed articles, such as foam packaging trays. The quality of foams made from a carbon dioxide blowing agent, and particularly 100% carbon dioxide, has been found to be substantially improved by adding one or more of the foregoing additives, i.e., polysiloxane, mineral oil and, optionally, polyolefin to the polymer melt during the extrusion and foaming process. Such foams have far less ruptured cells, surface cracks and corrugation than comparable foams made with a carbon dioxide blowing agent but which lack the additives of the present invention.
摘要翻译：本发明提供一种生产热塑性泡沫的方法，包括：（a）熔化热塑性聚合物以制备聚合物熔体; （b）将二氧化碳发泡剂引入聚合物熔体中; （c）向聚合物中加入一种或多种选自（1）聚硅氧烷和（2）矿物油的添加剂; 和（d）挤出和发泡熔融的聚合物熔体，发泡剂和一种或多种添加剂以产生热塑性泡沫。所得的热塑性泡沫可以热成型为各种泡沫制品，如泡沫包装托盘。通过向聚合物中加入一种或多种上述添加剂即聚硅氧烷，矿物油和任选的聚烯烃，已经发现通过二氧化碳发泡剂，特别是100％二氧化碳制成的泡沫的质量得到显着改善在挤出和发泡过程中熔化。与使用二氧化碳发泡剂制成但不含本发明添加剂的可比泡沫相比，这种泡沫具有远少破裂的细胞，表面裂纹和波纹。

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