ES437540A1 - Process for the production of crack-free precision mouldings - Google Patents

Process for the production of crack-free precision mouldings

Info

Publication number
ES437540A1
ES437540A1 ES437540A ES437540A ES437540A1 ES 437540 A1 ES437540 A1 ES 437540A1 ES 437540 A ES437540 A ES 437540A ES 437540 A ES437540 A ES 437540A ES 437540 A1 ES437540 A1 ES 437540A1
Authority
ES
Spain
Prior art keywords
mold
mass
casting resin
resin
pressure
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
ES437540A
Other languages
Spanish (es)
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of ES437540A1 publication Critical patent/ES437540A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/132—Chemical colour-forming components; Additives or binders therefor
    • B41M5/136—Organic colour formers, e.g. leuco dyes
    • B41M5/145—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • 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
    • B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
    • B41M5/323—Organic colour formers, e.g. leuco dyes
    • B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
    • 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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C2045/468—Means for plasticising or homogenising the moulding material or forcing it into the mould using a fluid as directly acting injection means

Abstract

Procedure for obtaining cracked-free molded bodies of exact measurements, by hardening reactive liquid casting resin masses, based on unsaturated polyester resins, under pressure and higher temperatures, transporting the resin mass of casting, which optionally contains fillers, pigments, reinforcing materials or other additives, at room temperature or slightly higher temperature, by pressing through a pipe through a nozzle pressed against the lower end of the mold, towards the mold that has a temperature higher than 70ºC and in this mold it is maintained until solidification under the pressure transmitted by the mass of liquid casting resin in the pipeline or a higher pressure, characterized in that a mass of casting resin was used which Contains between 1 to 30% by weight, based on polyester resins, of thermoplastic waste reducing agents. (Machine-translation by Google Translate, not legally binding)
ES437540A 1974-05-11 1975-05-09 Process for the production of crack-free precision mouldings Expired ES437540A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742422888 DE2422888A1 (en) 1974-05-11 1974-05-11 PROCESS FOR THE PRODUCTION OF CRACK-FREE AND TAILOR-MADE SHAPED BODIES

Publications (1)

Publication Number Publication Date
ES437540A1 true ES437540A1 (en) 1977-01-16

Family

ID=5915279

Family Applications (1)

Application Number Title Priority Date Filing Date
ES437540A Expired ES437540A1 (en) 1974-05-11 1975-05-09 Process for the production of crack-free precision mouldings

Country Status (8)

Country Link
AT (2) AT349208B (en)
BE (1) BE828881A (en)
CH (1) CH603343A5 (en)
DE (1) DE2422888A1 (en)
ES (1) ES437540A1 (en)
FR (1) FR2279537A1 (en)
GB (1) GB1498466A (en)
NL (1) NL7505493A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140833B1 (en) * 1983-09-15 1988-03-02 Ciba-Geigy Ag 5- and 6-azaphthalides, their mixture of isomers, process for their production and their use in recording materials which are sensitive to pressure and heat
US4652596A (en) * 1985-09-09 1987-03-24 Formica Corporation Thermosetting resin casting process, product and device
DE4114249A1 (en) * 1991-05-02 1992-11-05 Basf Ag METHOD FOR PRODUCING DAMAGE-FREE SHAPED PARTS FROM UNSATURATED POLYESTER RESIN
DE10065162C1 (en) * 2000-12-23 2002-06-13 Ckt Kunststoffverarbeitungstec Injection molding of plastic small or micro-components, comprises injecting a melt into a mold by feeding gas or liquid directly into it

Also Published As

Publication number Publication date
FR2279537A1 (en) 1976-02-20
ATA20377A (en) 1979-06-15
CH603343A5 (en) 1978-08-15
GB1498466A (en) 1978-01-18
BE828881A (en) 1975-11-10
AT349208B (en) 1979-03-26
FR2279537B1 (en) 1979-03-30
ATA354475A (en) 1978-08-15
AT354475B (en) 1978-08-15
NL7505493A (en) 1975-11-13
DE2422888A1 (en) 1975-12-11

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