RU96107257A - METHOD OF MANUFACTURE OF PRODUCTS FROM EASY PUROPLAST WITH CLOSED PORES - Google Patents

METHOD OF MANUFACTURE OF PRODUCTS FROM EASY PUROPLAST WITH CLOSED PORES

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Publication number
RU96107257A
RU96107257A RU96107257/04A RU96107257A RU96107257A RU 96107257 A RU96107257 A RU 96107257A RU 96107257/04 A RU96107257/04 A RU 96107257/04A RU 96107257 A RU96107257 A RU 96107257A RU 96107257 A RU96107257 A RU 96107257A
Authority
RU
Russia
Prior art keywords
mold
plastic composition
decomposition
cavity
temperature
Prior art date
Application number
RU96107257/04A
Other languages
Russian (ru)
Other versions
RU2124531C1 (en
Inventor
Спюдевольд Стейнар
Original Assignee
Полюнор Партнерс АС
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NO933294A external-priority patent/NO178771C/en
Application filed by Полюнор Партнерс АС filed Critical Полюнор Партнерс АС
Publication of RU96107257A publication Critical patent/RU96107257A/en
Application granted granted Critical
Publication of RU2124531C1 publication Critical patent/RU2124531C1/en

Links

Claims (4)

1. Способ производства изделий из легкого поропласта с закрытыми порами из пластмассовой композиции, содержащей химический порообразователь и, необязательно, другие вещества или добавки для регулирования способа, при котором пластмассовую композицию механически перерабатывают (пластицируют) в машине для переработки пластмасс в хорошо гомогенизированную, расплавленную пластмассовую композицию и переносят непосредственно в закрытую полость пресс-формы, отличающийся тем, что
1) пластмассовая композиция при ее переносе в полость пресс-формы имеет температуру, которая выше температуры разложения порообразователя в сочетании с необязательными добавками для регулирования разложения,
2) пластмассовую композицию переносят в закрытую полость пресс-формы между моментом времени, когда композиция достигла температуры, достаточной для разложения порообразователя в пластмассовой композиции, и моментом времени, когда начинается разложение,
3) закрытую полость пресс-формы полностью заполняют пластмассовой композицией, а температуру пластмассовой композиции в полости пресс-формы поддерживают выше температуры разложения порообразователя в пластмассовой композиции, пока не достигают желаемой степени разложения порообразователя, при этом давление в полости пресс-формы поддерживают настолько высоким, чтобы при разложении порообразователя пластмассовая композиция не вспенивалась или вспенивалась в незначительной степени, и
4) при достижении желаемой степени разложения снижают давление в закрытой полости пресс-формы, позволяя вспениваться пластмассовой композиции.1. Method for the production of products from lightweight cellular foam with closed pores from a plastic composition containing a chemical pore-forming agent and, optionally, other substances or additives to regulate the way in which the plastic composition is mechanically processed (plastified) in a machine for processing plastics into a well-homogenized, molten plastic composition and transferred directly into the closed cavity of the mold, characterized in that
1) the plastic composition when it is transferred into the cavity of the mold has a temperature that is higher than the decomposition temperature of the blowing agent in combination with optional additives for regulating decomposition,
2) the plastic composition is transferred into the closed cavity of the mold between the point in time when the composition has reached a temperature sufficient to decompose the blowing agent in the plastic composition and the point in time when the decomposition begins,
3) the closed cavity of the mold is completely filled with a plastic composition, and the temperature of the plastic composition in the cavity of the mold is maintained above the decomposition temperature of the pore-forming agent in the plastic composition until it reaches the desired degree of decomposition of the pore-forming agent, while the pressure in the cavity of the mold is maintained so high so that when decomposing a blowing agent, the plastic composition does not foam or foams to a small extent, and
4) upon reaching the desired degree of decomposition, the pressure in the closed cavity of the mold is reduced, allowing the plastic composition to foam. 2. Способ по п. 1, отличающийся тем, что пластмассовая композиция содержит добавки для регулирования разложения химического порообразователя, которые в закрытой полости пресс-формы вступают в экзотермическую или эндотермическую химическую реакцию. 2. The method according to p. 1, characterized in that the plastic composition contains additives for regulating the decomposition of the chemical blowing agent, which in a closed cavity of the mold enter into an exothermic or endothermic chemical reaction. 3. Способ по п. 1, отличающийся тем, что поверхность невспененного пластмассового изделия в закрытой полости пресс-формы охлаждают под давлением до температуры ниже температуры разложения порообразователя перед началом разложения химического порообразователя. 3. The method according to p. 1, characterized in that the surface of the non-foamed plastic product in a closed cavity of the mold is cooled under pressure to a temperature below the decomposition temperature of the pore-forming agent before the decomposition of the chemical pore-forming agent begins. 4. Способ по п. 1, отличающийся тем, что поверхность невспененного пластмассового изделия в закрытой полости пресс-формы охлаждают до температуры, которая придает достаточно высокую жесткость и прочность, позволяющую извлечь пластмассовое изделие из полости пресс-формы без вспенивания или вспенивания лишь в незначительной степени любой части изделия перед извлечением всего изделия из полости пресс-формы. 4. The method according to p. 1, characterized in that the surface of the non-foamed plastic product in a closed cavity of the mold is cooled to a temperature that gives a sufficiently high rigidity and strength to remove the plastic product from the cavity of the mold without foaming or foaming only insignificant the extent of any part of the product before removing the entire product from the mold cavity.
RU96107257A 1993-09-15 1994-09-14 Method of manufacturing products from light-weight closed-cell foam plastic RU2124531C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO933294A NO178771C (en) 1993-09-15 1993-09-15 Process for producing light cell plastic product with closed cells
NO933294 1993-09-15
PCT/NO1994/000153 WO1995007812A1 (en) 1993-09-15 1994-09-14 Process for the production of products of light cellular plastic with closed cells

Publications (2)

Publication Number Publication Date
RU96107257A true RU96107257A (en) 1998-07-20
RU2124531C1 RU2124531C1 (en) 1999-01-10

Family

ID=19896427

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96107257A RU2124531C1 (en) 1993-09-15 1994-09-14 Method of manufacturing products from light-weight closed-cell foam plastic

Country Status (21)

Country Link
US (1) US5667740A (en)
EP (1) EP0719207B1 (en)
JP (1) JPH09504749A (en)
KR (1) KR100250372B1 (en)
CN (1) CN1054099C (en)
AT (1) ATE169264T1 (en)
AU (1) AU680687B2 (en)
BR (1) BR9407474A (en)
CA (1) CA2171285A1 (en)
DE (1) DE69412271T2 (en)
DK (1) DK0719207T3 (en)
ES (1) ES2121228T3 (en)
FI (1) FI106188B (en)
HK (1) HK1001456A1 (en)
NO (1) NO178771C (en)
NZ (1) NZ273706A (en)
RU (1) RU2124531C1 (en)
SG (1) SG48174A1 (en)
TW (1) TW328545B (en)
WO (1) WO1995007812A1 (en)
ZA (1) ZA947007B (en)

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US6716379B2 (en) * 2000-02-03 2004-04-06 Pactiv Corporation Polymer foam plank with densified skin, method and apparatus for producing a densified skin on a foam plank
AU2001241822A1 (en) * 2000-02-29 2001-09-12 Bemis Manufacturing Company No nozzle member co-injection apparatus
US6964748B2 (en) 2000-11-30 2005-11-15 Bemis Manufacturing Company Co-injection methods using endothermic-blowing agents and products made therefrom
SE522297C2 (en) * 2001-05-17 2004-01-27 Biodisk Ab Method and apparatus for the application of thin articles and the use of packaging for the thin articles
US7951449B2 (en) 2002-06-27 2011-05-31 Wenguang Ma Polyester core materials and structural sandwich composites thereof
US7585557B2 (en) * 2004-02-17 2009-09-08 Eastman Kodak Company Foam core imaging element with gradient density core
US7037634B2 (en) * 2004-02-27 2006-05-02 Eastman Kodak Company Polymer foam surface smoothing materials and method
US7033723B2 (en) * 2004-02-27 2006-04-25 Eastman Kodak Company Surface roughness frequency to control pits on foam core imaging supports
US20080190924A1 (en) * 2007-02-13 2008-08-14 Sherwood Services, Ag Medical sharps container
NL2004453A (en) 2009-04-24 2010-10-26 Asml Netherlands Bv Lithographic apparatus having a substrate support with open cell plastic foam parts.
JP4436435B1 (en) * 2009-07-02 2010-03-24 Ｗｐｃコーポレーション株式会社 Molding material for extrusion foam molding and method for manufacturing the same, wood foam molded body manufactured using the molding material, method for manufacturing the wood foam molded body, and manufacturing apparatus
US11533997B2 (en) * 2017-09-11 2022-12-27 Vangura Kitchen Tops, Inc. Laminate countertop with synthetic polymer substrate
US20210347958A1 (en) 2019-06-27 2021-11-11 Moxietec, Llc Polymer foam articles and methods of making polymer foams
EP3990248A1 (en) * 2019-06-27 2022-05-04 Moxietec, LLC Polymer foam articles and methods of making polymer foams

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US4746478A (en) * 1985-07-24 1988-05-24 Sekisui Kaseihin Kogyo Kabushiki Kaisha Method and apparatus for production of foamed thermoplastic material
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DE3722050A1 (en) * 1987-07-03 1989-01-19 Berstorff Gmbh Masch Hermann METHOD AND EXTRUDER SYSTEM FOR PRODUCING A FOAMABLE PLASTIC MIXTURE
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