DE2223253B2 - PROCESS FOR THE GAS ENCLOSURE-FREE PRODUCTION OF CAST RESIN MOLDINGS IN A VACUUM - Google Patents

PROCESS FOR THE GAS ENCLOSURE-FREE PRODUCTION OF CAST RESIN MOLDINGS IN A VACUUM

Info

Publication number
DE2223253B2
DE2223253B2 DE19722223253 DE2223253A DE2223253B2 DE 2223253 B2 DE2223253 B2 DE 2223253B2 DE 19722223253 DE19722223253 DE 19722223253 DE 2223253 A DE2223253 A DE 2223253A DE 2223253 B2 DE2223253 B2 DE 2223253B2
Authority
DE
Germany
Prior art keywords
gas
vacuum
resin moldings
production
resin
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE19722223253
Other languages
German (de)
Other versions
DE2223253C3 (en
DE2223253A1 (en
Inventor
Karl Otto Prof. Dr. 7570 Baden-Baden Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE19722223253 priority Critical patent/DE2223253C3/en
Priority claimed from DE19722223253 external-priority patent/DE2223253C3/en
Publication of DE2223253A1 publication Critical patent/DE2223253A1/en
Publication of DE2223253B2 publication Critical patent/DE2223253B2/en
Application granted granted Critical
Publication of DE2223253C3 publication Critical patent/DE2223253C3/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22Component parts, details or accessories; Auxiliary operations
    • B29C39/42Casting under special conditions, e.g. vacuum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16Fillers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (1)

Patentanspruch:Claim: Verfahren zur gaseinschlußtreien Herstellung von Gießharzformlingen unter Vakuum, dadurch gekennzeichnet, daß der Gießharzmasse und/oder einem in dieser ;nthaltenen körnigen Füllstoff Silikagel oder ein als Molekularsieb wirkender Stoff zugesetzt wird.Process for the gas inclusion-free production of molded resin moldings under vacuum, thereby characterized in that the casting resin compound and / or one in this; nthaltenen granular Silica gel filler or a substance acting as a molecular sieve is added. Die Erfindung betrifft ein Verfahren zur ^aseinschlußfreien Herstellung von Gießharzformlingen unter Vakuum.The invention relates to a method for non-inclusion Manufacture of molded resin moldings under vacuum. Bei der Herstellung von Gießharzformlingen, welche elektrische Bauteile enthalten, ist es zur Erhaltung der dem Gießharz eigenen hohen Isolationsfähigkeit unbedingt erforderlich, Luft- bzw. Gaseinschlüsse beim Vergießen zu vermeiden. Ein diesem Zweck dienendes bekanntes Verfahren sieht vor, das flüssige Harz unter Vakuum zu vergießen DT-GM 17 90 611. Die in und an dem zu vergießenden elektrischen Bauteil, dem Füllstoff und in der Form vorhandene Gasmenge wird mit kleiner werdendem Vakuumdruck ebenfalls so verkleinert, daß man einen für viele Zwecke brauchbaren Gießharz-In the production of cast resin moldings which contain electrical components, it is necessary to maintain the the casting resin's inherent high insulation capacity is essential, air or gas inclusions in the Avoid shedding. A known method serving this purpose provides, the liquid resin under Vacuum shed DT-GM 17 90 611. The in and on the electrical component to be potted, the filler and the amount of gas present in the mold is also reduced as the vacuum pressure decreases so that a cast resin that can be used for many purposes S formling erhält, in dem nur noch winzige Gaseinschlüsse vorhanden sind. Eine vollständige Entgasung durch weitere Absenkung des Drucks im Vakuum ist nur unter erheblichem, für industrielle Fertigung nicht vertretbarem apparativem Aufwand möglich.S molding receives in which only tiny gas inclusions available. A complete degassing by further lowering the pressure in the vacuum is only possible below considerable expenditure on equipment, which is not justifiable for industrial production, is possible. ίο Es besteht die Aufgabe, ein Verfahren zu entwickeln, das zum Entfernen von Restgaseinschlüssen bei der industriellen Serienfertigung von gaseinschlußfreien Gießharzformlingen geeignet istίο The task is to develop a procedure that for the removal of residual gas inclusions in the industrial series production of gas inclusion-free Cast resin moldings is suitable Die Lösung der oben gestellten Aufgabe bestehtThe solution to the above problem is there ES darin, daß der Gießharzmasse und/oder einem in dieser enthaltenen körnigen Füllstoff Silikagel oder ein als Molekularsieb wirkender Stoff zugesetzt wird.It is that the casting resin compound and / or one in this granular filler contained in silica gel or a substance acting as a molecular sieve is added. Damit wird die Lösbarkeit, insbesondere beim Obergang zur und in der festen Phase, verbessert Es ist so möglich, die bei der Vakuumbehandlung in vertretbarem Rahmen noch verbleibenden winzigen Restvolumina eines Gases vollständig zum Verschwinden zu bringen.This improves the solubility, especially during the transition to and in the solid phase as possible, the tiny ones that remain within an acceptable range during the vacuum treatment To make residual volumes of a gas disappear completely.
DE19722223253 1972-05-12 Process for the gas inclusion-free production of cast resin moldings under vacuum Expired DE2223253C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722223253 DE2223253C3 (en) 1972-05-12 Process for the gas inclusion-free production of cast resin moldings under vacuum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722223253 DE2223253C3 (en) 1972-05-12 Process for the gas inclusion-free production of cast resin moldings under vacuum

Publications (3)

Publication Number Publication Date
DE2223253A1 DE2223253A1 (en) 1973-11-22
DE2223253B2 true DE2223253B2 (en) 1977-06-30
DE2223253C3 DE2223253C3 (en) 1978-02-16

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070223A1 (en) * 2001-03-07 2002-09-12 Globevision Pte Ltd Decorative ornaments

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002070223A1 (en) * 2001-03-07 2002-09-12 Globevision Pte Ltd Decorative ornaments

Also Published As

Publication number Publication date
DE2223253A1 (en) 1973-11-22

Similar Documents

Publication Publication Date Title
DE1936337B2 (en) METHOD OF REMOVING A CORE OF SILICON MATERIALS FROM A METAL CASTING
DE1277551B (en) Process and device for casting hardenable plastics in a vacuum
EP0033712A2 (en) Installation for producing vehicle wheels
DE2223253C3 (en) Process for the gas inclusion-free production of cast resin moldings under vacuum
DE3444996A1 (en) METHOD AND DEVICE FOR BUBBLE-FREE CURING OF POLYMERIC PLASTICS
DE2223253B2 (en) PROCESS FOR THE GAS ENCLOSURE-FREE PRODUCTION OF CAST RESIN MOLDINGS IN A VACUUM
DE2462516A1 (en) METHOD OF MANUFACTURING MEAT PRODUCTS, E.G. ROAST OF MEAT OR POULTRY AND MEAT PRODUCTS, E.G. HAM, PIES AND PRODUCTS MADE BY THIS PROCESS
DE958429C (en) Device for the production of molded parts from organic, hardenable plastics using the vacuum bag process
DE476506C (en) Process for the production of piezoelectric bodies
DE588404C (en) Method and device for the production of objects using lintel casting
AT162901B (en) Method and device for the production of cellular rubber moldings
DE2318557C3 (en) Method and device for wet pressing of magnetizable ferrite molded bodies
DE1228781B (en) Device for the production of bubble and crack-free cast resin bodies
DE530559C (en) Process for the production of synthetic resin inlays
DE351986C (en) Method and device for the production of thin-walled, shell-shaped bodies from chocolate mass o.
AT301156B (en) METHOD OF INJECTION MOLDING OF MESH-CONTAINING HOLLOW BODIES FOR PNEUMATIC CONTROL UNITS
DE391094C (en) Process for the production of homogeneous metal casting u. like
DE166627C (en)
DE858034C (en) Method and device for the production of cross clamps for stands of laboratory equipment
DE418047C (en) Device for vulcanizing bicycle tires
CH526918A (en) Ham pre-boil treatment drum
AT304243B (en) Process for preparing meat for further processing in a rotating drum
DE467364C (en) Device for shearing off the castings of blocks produced by rising cast by moving the molds
AT85737B (en) Method and device for manufacturing and piercing sand molds for foundry purposes.
AT222821B (en) Method and apparatus for molding glass objects

Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
EHJ Ceased/non-payment of the annual fee