DE684935C - Manufacture of molded bodies from hardenable synthetic resin compounds - Google Patents

Manufacture of molded bodies from hardenable synthetic resin compounds

Info

Publication number
DE684935C
DE684935C DEF72491D DEF0072491D DE684935C DE 684935 C DE684935 C DE 684935C DE F72491 D DEF72491 D DE F72491D DE F0072491 D DEF0072491 D DE F0072491D DE 684935 C DE684935 C DE 684935C
Authority
DE
Germany
Prior art keywords
synthetic resin
channels
heated
manufacture
mold
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.)
Expired
Application number
DEF72491D
Other languages
German (de)
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.)
AUG NOWACK AKT GES
Original Assignee
AUG NOWACK AKT GES
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 AUG NOWACK AKT GES filed Critical AUG NOWACK AKT GES
Priority to DEF72491D priority Critical patent/DE684935C/en
Application granted granted Critical
Publication of DE684935C publication Critical patent/DE684935C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling

Landscapes

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

Description

Herstellung von Formkörpern aus härtbaren Kunstharzmassen Es ist bereits vorgeschlagen worden, durch Erwärmen plastisch gewordene. härtbare Kunstharzpreßmassen aus einem n geheizten Spritzzylinder in eine Form zu spritzen, in der die Preßmasse durch nachträgliches Erhitzen gehärtet wird. Dieses nachträgliche Erhitzen, d. h. Aushärten der Preßmasse, ver hindert ein rasches und ununterbrochenes Arbeiten.Production of moldings from curable synthetic resin compounds It is already has been proposed to become plastic by heating. curable synthetic resin molding compounds to inject from a heated injection cylinder into a form in which the molding compound is hardened by subsequent heating. This post-heating, d. H. Hardening of the molding compound prevents rapid and uninterrupted work.

Durch das Verfahren nach der Erfindung ist es möglich, aus rasch härtbaren Kunstmassen, i. B. Phenolformaldehydkunstharzmassen, nach dem Spritzgußverfahren vollständig gehärtete, also sofort gebrauchsfertige Formkörper herzustellen. Hierdurch wird viel Zeit gespart, da in den Spritzvorrichtungen ununterbrochen gearbeitet werden kann. By the method according to the invention it is possible to get out quickly hardenable synthetic materials, i. B. phenol-formaldehyde synthetic resin compositions, according to the injection molding process to produce fully cured, so immediately ready-to-use moldings. Through this a lot of time is saved because the spraying devices work continuously can be.

Damit die Masse nicht vorzeitig erhärtet, ist es aber notwendig, daß der Masse die erforderliche Wärme nicht allein im Spritzzylinder und in der geheizten Form zugeführt wird. Deshalb wird nach der Erfindung eine besondere Wärmezuführung in den Kanälen selbst vorgenommen. So that the mass does not harden prematurely, it is necessary, however, that the mass the required heat not only in the injection cylinder and in the heated mold is supplied. Therefore, according to the invention, a special heat supply is required made in the channels themselves.

Gemäß der Erfindung wird also die Preßt masse in Pulver-, Körner-oder Tablettenform aus dem geheizten Spritzzylinder mit hohem Druck durch geheizte Kanäle mit guter Wärmeübertragung in die geheizte Form gespritzt, wo sie alsdann schnell erhärtet. Die Form und somit auch die Kanäle sind bei den bekannten, rasch härtenden Massen aus Phenolformaldehydkunstharzen auf etwa 160 bis 1800 geheizt. According to the invention, the pressing is mass in powder, grain or Tablet form from the heated injection cylinder at high pressure through heated channels injected with good heat transfer into the heated mold, where it is then quickly hardened. The shape and thus also the channels are known, rapidly hardening Masses of phenol-formaldehyde resins heated to around 160 to 1800.

Bei dieser Arbeitsweise ist ein vorzeitiges Erhärten der Masse in dem Spritzzylinder und in den Kanälen zwischen ihm und der Form nicht zu befürchten, da die Masse schnell durch die Kanäle fließt, in denen sie infolge der großen Oberfläche und des geringen Querschnitts der Kanäle gleichmäßig erwärmt wird. Unter dem Einfluß der Temperatur der Form und des hohen Druckes erhärtet die Masse nach Ausfüllen der Form sofort und bildet gebrauchsfertige Formkörper von der gewünschten Gestalt. In this way of working, premature hardening of the compound is inevitable not to worry about the injection cylinder and in the channels between it and the mold, because the mass flows quickly through the channels in which it is due to the large surface and the small cross-section of the channels is heated uniformly. Under the influence the temperature of the mold and the high pressure hardens the mass after filling the mold immediately and forms ready-to-use moldings of the desired shape.

Die vor der Preßform liegenden geheizten Kanäle können z. B. einen sternförmigen oder ähnlichen Querschnitt besitzen, sie können spiralförmig oder ähnlich angeordnet sein. The heated channels located in front of the mold can, for. B. a Have star-shaped or similar cross-section, they can be spiral or be arranged similarly.

Claims (2)

PATENTANSPRÜCHE : 1. Verfahren zum Hestellen von Formkörpern aus härtbaren Kunstharzmassen durch Spritzen, bei dem die Kunstharzmasse aus einem geheizten Spritzzylinder in die Form gespritzt wird, dadurch gekennzeichnet, daß die Masse mit hohem Druck durch geheizte Kanäle mit guter Wärmeübertragung in die geheizte Form gespritzt wird, wo sie alsdann schnell erhärtet. PATENT CLAIMS: 1. Process for the production of moldings from curable synthetic resin compositions by spraying, in which the synthetic resin composition consists of a heated Injection cylinder is injected into the mold, characterized in that the mass with high pressure through heated channels with good heat transfer into the heated one Mold is injected, where it then hardens quickly. 2. Vorrichtung zur Ausführung des Verfahrens nach Anspruch I, gekennzeichnet durch Kanäle mit sternförmigem oder ähnlichem Querschnitt oder durch Kanäle, die spiralförmig oder ähnlich angel ordnet sind. 2. Apparatus for carrying out the method according to claim I, characterized through channels with a star-shaped or similar cross-section or through channels that Are arranged spirally or similarly angel.
DEF72491D 1931-06-26 1931-06-26 Manufacture of molded bodies from hardenable synthetic resin compounds Expired DE684935C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF72491D DE684935C (en) 1931-06-26 1931-06-26 Manufacture of molded bodies from hardenable synthetic resin compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF72491D DE684935C (en) 1931-06-26 1931-06-26 Manufacture of molded bodies from hardenable synthetic resin compounds

Publications (1)

Publication Number Publication Date
DE684935C true DE684935C (en) 1939-12-08

Family

ID=7111826

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF72491D Expired DE684935C (en) 1931-06-26 1931-06-26 Manufacture of molded bodies from hardenable synthetic resin compounds

Country Status (1)

Country Link
DE (1) DE684935C (en)

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