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1. 发明授权

EP0524181B1 METHOD AND APPARATUS FOR INJECTION MOLDING PLASTIC ARTICLE WITH GAS-ASSISTANCE 无效
标题翻译：方法和设备的塑料物体使用气体注射成型。
公开(公告)号：EP0524181B1
公开(公告)日：1995-12-06
申请号：EP91904363.8
申请日：1991-02-06
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/17
CPC分类号： B29C45/1705 , B29C2045/1718 , Y10S425/812
摘要： A method and apparatus for injection molding plastic articles with gas-assistance wherein the injected molten plastic (18) is depressurized by a controlled amount prior to gas injection to facilitate the penetration of the gas into the molten plastic (18) within the article-defining cavity (44) of the mold.

2. 发明授权

EP0584080B2 METHOD AND SYSTEM FOR INJECTION MOLDING UTILIZING PRESSURIZED GAZ SOURCE WITHIN A CHAMBER IN THE MOLD 失效
标题翻译：方法和系统注塑用压力气源在一个房间形状
公开(公告)号：EP0584080B2
公开(公告)日：2004-07-14
申请号：EP92905872.5
申请日：1992-01-22
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/00 , B29D22/00
CPC分类号： B29C45/1734 , B29C45/1732
摘要： A method and system for the injection molding of plastic articles in an injection molding system including a chamber (18) in a mold of the system which stores a charge of pressurized gas immediately prior to use. The mold has an injection aperture and a mold cavity for receiving molten resin. A resin flow path (14) fluidly communicates the injection aperture and the mold cavity within the mold. An orifice (20) in the mold opens the chamber (18) to the mold. A gas receiver (10) initially stores the charge of pressurized gas and a fluid circuit selectively introduces the charge of pressurized fluid into the chamber (18). A valve mechanism (24) in the chamber (18) selectively fluidly communicates the chamber (18) to the flow path (14) under control of a controller (28). When communicated to the flow path (14), the charge of gas distributes the molten plastic within the mold cavity in one embodiment of the invention.

3. 发明授权

EP0584080B1 METHOD AND SYSTEM FOR INJECTION MOLDING UTILIZING PRESSURIZED FLUID SOURCE WITHIN A CHAMBER IN THE MOLD 失效
标题翻译：方法和系统注塑用压力气源在一个房间形状
公开(公告)号：EP0584080B1
公开(公告)日：1998-03-25
申请号：EP92905872.5
申请日：1992-01-22
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/00 , B29D22/00
CPC分类号： B29C45/1734 , B29C45/1732
摘要： A method and system for the injection molding of plastic articles in an injection molding system including a chamber (18) in a mold of the system which stores a charge of pressurized gas immediately prior to use. The mold has an injection aperture and a mold cavity for receiving molten resin. A resin flow path (14) fluidly communicates the injection aperture and the mold cavity within the mold. An orifice (20) in the mold opens the chamber (18) to the mold. A gas receiver (10) initially stores the charge of pressurized gas and a fluid circuit selectively introduces the charge of pressurized fluid into the chamber (18). A valve mechanism (24) in the chamber (18) selectively fluidly communicates the chamber (18) to the flow path (14) under control of a controller (28). When communicated to the flow path (14), the charge of gas distributes the molten plastic within the mold cavity in one embodiment of the invention.

4. 发明授权

EP0539386B1 METHOD AND SYSTEM FOR THE INJECTION MOLDING OF PLASTIC ARTICLES UTILIZING A FLUID COMPRESSION UNIT 无效
标题翻译：方法和系统的塑料物体注塑使用FLUIDUMKOMPRESSION单位
公开(公告)号：EP0539386B1
公开(公告)日：1996-10-23
申请号：EP91910565.0
申请日：1991-05-16
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/00 , B29C45/34 , B29C45/76 , B29D22/00
CPC分类号： B29C45/1732
摘要： A method of and apparatus for injection molding plastic articles. The apparatus includes a resin injection nozzle, a mold having an injection aperture and a mold cavity for receiving molten resin from the nozzle. The gas compression unit (37') includes a gas booster (58) which pressurizes a first charge of gas to the pressure setting of a pressure switch (71). The gas receiver (72) stores the first charge of pressurized gas at a pressure level within a predetermined range of pressures. A first fluid pressure reducing valve (74) reduces the pressure of the gas as it is communicated from the fluid receiver (72) to an orifice in the mold to an acceptable level for molding the article. A second fluid pressure reducing valve (79) allows a relatively low holding pressure in the article sufficient to complete the article and hold any thick sections of the article from sinking. The gas compression unit (37') is capable of servicing several injection molding machines and corresponding molds when a plurality of such first and second pressure reducing valves (74, 74', 74'', 79) are provided.

5. 发明授权

EP0493447B2 METHOD FOR THE USE OF GAS ASSISTANCE IN THE MOLDING OF PLASTIC ARTICLES 失效
标题翻译：铸塑料制品在使用燃气帮助方法
公开(公告)号：EP0493447B2
公开(公告)日：2002-01-02
申请号：EP90914009.7
申请日：1990-09-18
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/17
CPC分类号： B29C45/57 , B29C45/1704 , Y10S425/812

6. 发明授权

EP0424435B1 PROCESS FOR INJECTION MOLDING 失效
标题翻译：注射成型工艺
公开(公告)号：EP0424435B1
公开(公告)日：2001-07-04
申请号：EP89907916.4
申请日：1989-06-26
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C33/10 , B29C45/34 , B29D22/00 , B32B3/20
CPC分类号： B29C33/0055 , B29C45/1704 , B29C45/1711 , B29C2045/1729 , B29C2045/173
摘要： A process for injection molding hollow plastic articles (46) includes the steps of sequentially injecting fluent plastic and gas into a mold cavity (36). A quantity of fluent plastic is initially injected to substantially fill the mold cavity (36). A charge of pressurized gas is then injected into the mold cavity (36) to displace a portion of the still-fluent plastic into a spill cavity (40) flow coupled to the mold cavity (36). The article (46) may be formed with an internal wall by introducing first and second gas charges into the mold cavity (36) at separate entry points. In one embodiment, the first and second charges are introduced substantially simultaneously. In a second embodiment, the charges are introduced sequentially. After the hollow plastic article (46) has solidified, the gas is vented.
摘要翻译：注塑中空塑料制品（46）的方法包括顺序地将流体塑料和气体注入模腔（36）的步骤。最初注入一定量的流体塑料以充分填充模腔（36）。然后将一定量的加压气体注入模腔（36）中，以将一部分仍为流体的塑料置换成与模腔（36）耦合的溢流腔（40）。通过在分开的入口点处将第一和第二气体引入模腔（36）中，物品（46）可以形成有内壁。在一个实施例中，第一和第二电荷基本上同时被引入。在第二实施例中，电荷被顺序引入。中空塑料制品（46）凝固后，排出气体。

7. 发明授权

EP0556323B2 METHOD FOR THE USE OF GAS ASSISTANCE IN THE MOLDING OF PLASTIC ARTICLES TO ENHANCE SURFACE QUALITY 失效
标题翻译：程序用于气体用于铸造的塑料物品的施加的表面，以提高质量
公开(公告)号：EP0556323B2
公开(公告)日：2006-09-13
申请号：EP92900994.2
申请日：1991-11-01
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/00
CPC分类号： B29C45/1704 , Y10S425/812

8. 发明授权

EP0556323B1 METHOD FOR THE USE OF GAS ASSISTANCE IN THE MOLDING OF PLASTIC ARTICLES TO ENHANCE SURFACE QUALITY 失效
标题翻译：程序用于气体用于铸造的塑料物品的施加的表面，以提高质量
公开(公告)号：EP0556323B1
公开(公告)日：1996-01-31
申请号：EP92900994.2
申请日：1991-11-01
申请人： Melea Limited
发明人： HENDRY, James, W.
IPC分类号： B29C45/00
CPC分类号： B29C45/1704 , Y10S425/812
摘要： A method of gas-assisted injection molding in which: 1) a first amount of plastic is injected into an article-defining cavity of a mold so that it flows therein; 2) a second amount of plastic continues to be injected into the cavity simultaneous with the injection of a charge of pressurized gas wherein the pressurized gas prevents the flow of plastic in the cavity from stopping; and 3) the charge of pressurized gas continues to be injected after the second amount of plastic is injected to distribute the total amount of molten plastic resin in the cavity. The ratio for the first amount of plastic to the total amount of plastic required for the preparation of the article is in the range of .2 to .7. Also, the pressurized gas has a pressure between approximately 1000 psi and 5000 psi. These steps prevent imperfections on the exterior surface of the plastic article. The gas charge is maintained under pressure within the article until the article has set up in the article-defining cavity. Finally, the gas pressure is relieved in the article and the finished article is removed from the mold. The method is particularly useful in molding articles having a relative large cross-section.

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