[특허]Compressed injection molding

Meiban International Pte. Ltd.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Compressed injection molding

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-045/16 B29C-045/76 B29C-045/77 B29C-045/56 B29C-045/80
미국특허분류(USC)	264/040.1; 264/040.5; 264/328.7
출원번호	US-0845648 (2013-03-18)
등록번호	US-8834756 (2014-09-16)
우선권정보	GB-1017998.4 (2010-10-26)
발명자 / 주소	Todesco, Pierre Louis Goh, Carol Su Lin
출원인 / 주소	Meiban International Pte. Ltd.
대리인 / 주소	Saile Ackerman LLC
인용정보	피인용 횟수 : 0 인용 특허 : 7

초록
▼

The application provides a molding apparatus. The molding apparatus comprises a first mold-defining member together with a second mold-defining member, one or more channels, and one or more moveable cores. The first mold-defining member together with the second mold-defining member defines an internal cavity. The channels comprise inlets for receiving molten resin and outlets to the internal cavity. The moveable cores are moveable between a first position and a second position, wherein the moveable core in the second position reduces a volume of the inte...

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청구항
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1. A method of producing an injection molding comprising injecting a predetermined volume of a molten resin into an internal cavity of a die assembly, wherein the molten resin flows into the internal cavity via an outlet of a resin channel,advancing a moveable core into the internal cavity by a pre-determined distance, such that the volume of the internal cavity is reduced,measuring the pressure being applied to the molten resin, andrepeating the advancing of the moveable core and the measuring of the pressure when the measured pressure is less than a pre-determined pressure;wherein the advancing of the moveable core is done such that the moveable core closes the outlet of the resin channel. 2. The method according to claim 1, wherein after the molten resin being injected into the internal cavity, the moveable core is advanced such that the volume of the internal cavity is reduced. 3. The method according to claim 1, wherein the moveable core advances while the molten resin is being injected into the internal cavity. 4. The method according to claim 1, wherein the volume of molten resin being injected into the internal cavity of the die assembly is adjusted according to positional data of the moveable core. 5. The method according to claim 1, further comprising: measuring a position of the moveable core; andadjusting the predetermined volume of a molten resin for a subsequent injecting when the position of the moveable core is different from a pre-determined position of the moveable core. 6. The method according to claim 1, further comprising: adjusting the predetermined volume of a molten resin for a subsequent injecting when the pressure that is applied to the molten resin is different from the pre-determined pressure. 7. A method of producing an injection molding comprising providing a layer of first resin andproviding a layer of second resin that is provided next to the first resin layer,wherein the providing of the layer of first resin comprises injecting a predetermined first volume of a molten first resin into an internal cavity of a die assembly, wherein the molten first resin flows into the internal cavity via a first outlet of a first resin channel,forming the layer of first resin by advancing a moveable core into the internal cavity to apply a pre-determined first pressure on the molten first resin, such that the volume of the internal cavity is reduced, the advancing of the moveable core is done such that the moveable core closes the first outlet of the first resin channel, andmeasuring a first position of the moveable core,wherein the providing of the layer of second resin comprises injecting a predetermined second volume of a molten second resin into the internal cavity of the die assembly, wherein the molten second resin flows into the internal cavity via a second outlet of a second resin channel,forming layer of second resin by advancing the moveable core into the internal cavity to apply a pre-determined second pressure on the molten second resin, such that the volume of the internal cavity is reduced, the advancing of the moveable core is done such that the moveable core closes the second outlet of the second resin channel, andmeasuring a second position of the moveable core,the method further comprises, adjusting the predetermined first volume of the molten first resin for a subsequent injecting when the position of the moveable core is different from a pre-determined first position, andadjusting the predetermined second volume of the molten second resin for a subsequent injecting when the position of the moveable core is different from a pre-determined second position. 8. The method according to claim 7, wherein the application of the pre-determined first pressure on the molten first resin comprises: advancing the moveable core by a pre-determined distance,measuring the pressure being applied to the molten first resin, andrepeating the advancing of the moveable core and the measuring of the pressure when the measured pressure is less than the pre-determined first pressure. 9. The method according to claim 7, wherein the application of the pre-determined second pressure on the molten second resin comprises: advancing the moveable core by a pre-determined distance,measuring the pressure being applied to the molten second resin, andrepeating the advancing of the moveable core and the measuring of the pressure when the measured pressure is less than the pre-determined second pressure. 10. A method of producing an injection molding comprising providing a layer of first resin andproviding a layer of second resin that is provided next to the first resin layer,wherein the providing of the layer of first resin comprises injecting a predetermined first volume of a molten first resin into an internal cavity of a die assembly, wherein the molten first resin flows into the internal cavity via a first outlet of a first resin channel, andforming the layer of first resin by advancing a moveable core by a pre-determined distance into the internal cavity, such that the volume of the internal cavity is reduced, the advancing of the moveable core is done such that the moveable core closes the first outlet of the first resin channel, measuring the pressure being applied to the molten first resin, and repeating the advancing of the moveable core, and the measuring of the pressure when the measured pressure is less than a pre-determined first pressure; andwherein the providing of the layer of second resin comprises injecting a predetermined second volume of a molten second resin into the internal cavity of the die assembly, wherein the molten second resin flows into the internal cavity via a second outlet of a second resin channel, andforming the layer of second resin by advancing the moveable core by a pre-determined distance into the internal cavity, such that the volume of the internal cavity is reduced, the advancing of the moveable core is done such that the moveable core closes the second outlet of the second resin channel, measuring the pressure being applied to the molten second resin, and repeating the advancing of the moveable core, and the measuring of the pressure when the measured pressure is less than a pre-determined second pressure. 11. The method of claim 10, further comprising: after forming the layer of first resin, measuring a first position of the movable core;after forming the layer of second resin, measuring a second position of the movable core;adjusting the predetermined first volume of the molten first resin for a subsequent injecting when the first position of the moveable core is different from a pre-determined first position, andadjusting the predetermined second volume of the molten second resin for a subsequent injecting when the second position of the moveable core is different from a pre-determined second position.

이 특허에 인용된 특허 (7)

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특허 상세정보

Compressed injection molding

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Compressed injection molding

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이 특허에 인용된 특허 (7)

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IPC 상세정보(version : 201201)

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