SE8103741L - PREPARING SPRAY MATERIAL PRODUCTS - Google Patents

PREPARING SPRAY MATERIAL PRODUCTS

Info

Publication number
SE8103741L
SE8103741L SE8103741A SE8103741A SE8103741L SE 8103741 L SE8103741 L SE 8103741L SE 8103741 A SE8103741 A SE 8103741A SE 8103741 A SE8103741 A SE 8103741A SE 8103741 L SE8103741 L SE 8103741L
Authority
SE
Sweden
Prior art keywords
mixture
temperature
mold
moulding
mould cavity
Prior art date
Application number
SE8103741A
Other languages
Swedish (sv)
Inventor
W T Kyritsis
R C Simmonds
Original Assignee
Usm Corp
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 Usm Corp filed Critical Usm Corp
Publication of SE8103741L publication Critical patent/SE8103741L/en

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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • B29C44/422—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum by injecting by forward movement of the plastizising screw

Abstract

1382274 Injection moulding cellular articles BRITISH UNITED SHOE MACHINERY CO Ltd 28 Jan 1972 [22 Jan 1971] 4119/72 Heading B5A A method of moulding an article of foam material comprises (a) mixing a moulding material and a blowing agent at a temperature below the foaming temperature, (b) injecting the mixture into a mould cavity and simultaneously increasing the temperature of the mixture at least to the foaming temperature, at a rate sufficient to fill the mould before the development of blowing gas, the surfaces of the mould cavity being at a temperature sufficient to cool the mixture adjacent thereto be below the foaming temperature but not to the solidification temperature of the moulding material, and (c) expanding the mould cavity and subsequently cooling the moulding mixture. The mould cavity may be expanded at a rate independent of the pressure in the cavity, exapnsion being commenced upon or immediately preceding termination of injection. Apparatus for carrying out the method is as described in Specification 1,292,318.

Claims (1)

Patentkrav 1. Slit att formspruta produkter, innefattande stegen att smglta ett sprutgjutningsmaterial och blanda materialet med ett jgsmedel under bibehgllande am blandningen mid en temperatur lggre In jgsmediate uppsktmningstemperatur,kgnneteeknatav att blandningens temperatur hojes till en temperatur minst like med blandningens normala uppskumningstemperatur direkt fire insprutningen am blandningen i en form med friktionsvarme, alstrat genom pressning am blandningen genom en passage som stryper strOmningen dgrigenon, att blandningen tillfOres till ett kylt, expanderbart formrum i en mgngd som fyller formrunmet under jgsmedlets induktionsperiod, att jgsmedlet inaktiveras i den del av blandningen, EOM ar i kontakt med formens kalla innervgggar, varefter volymen pA formrummet omedelbart okas, och att den del am blandningen som icke Sr i kontakt med Sc kalla formvgggarna expanderas genom gasutveckling mid jOsmedlots termiska sonderfall. .56 I II I ENS 1111PHIMI4 111Claim 1. Wear to injection mold products, comprising the steps of smelting an injection molding material and mixing the material with a lubricant while maintaining the mixture at a temperature below Injmedmediate tempering temperature, provided that the temperature of the mixture is raised to a temperature at least equal to the normal direct foaming temperature of the mixture. the mixture in a friction heat mold generated by pressing the mixture through a passage restricting the flow dgrigenone, that the mixture is fed to a cooled, expandable mold space in an amount that fills the mold cavity during the induction period of the mold, that the mold is inactivated in the part of the mixture in contact with the cold inner walls of the mold, after which the volume of the mold space is immediately increased, and that the part of the mixture which is not in contact with the cold mold walls is expanded by gas evolution in the thermal probe of the medium. .56 I II I ENS 1111PHIMI4 111 1. 7NNINN**yzAtsar mr timar-Ak~:Wilfkk 22 64 12 2 /6 421. 7NNINN ** yzAtsar mr timar-Ak ~: Wilfkk 22 64 12 2/6 42
SE8103741A 1971-01-29 1981-06-15 PREPARING SPRAY MATERIAL PRODUCTS SE8103741L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP322371A JPS5428426B1 (en) 1971-01-29 1971-01-29

Publications (1)

Publication Number Publication Date
SE8103741L true SE8103741L (en) 1981-06-15

Family

ID=11551429

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8103741A SE8103741L (en) 1971-01-29 1981-06-15 PREPARING SPRAY MATERIAL PRODUCTS

Country Status (20)

Country Link
JP (1) JPS5428426B1 (en)
AT (1) AT342290B (en)
BE (1) BE778748A (en)
CA (1) CA977114A (en)
CH (1) CH533001A (en)
CS (1) CS166042B2 (en)
DE (1) DE2204157B2 (en)
DK (1) DK142608B (en)
ES (1) ES399703A1 (en)
FI (1) FI56641C (en)
FR (1) FR2123540B1 (en)
GB (1) GB1382274A (en)
HU (1) HU167065B (en)
IL (1) IL38667A (en)
IS (1) IS2054A7 (en)
IT (1) IT947068B (en)
NL (1) NL172131C (en)
NO (1) NO138281C (en)
PL (1) PL84475B1 (en)
SE (1) SE8103741L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805215A1 (en) * 1988-02-19 1989-08-31 Triumph Adler Ag METHOD FOR PRODUCING A PLASTIC WRITING ROLL FOR WRITING OR SIMILAR OFFICE MACHINES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384691A (en) * 1965-09-10 1968-05-21 Allied Chem Method for molding a structure having a foamed plastic core substantially enclosed within an essentially unfoamed plastic layer
CH471671A (en) * 1967-06-09 1969-04-30 United Shoe Machinery Corp Method and device for injection molding objects made of foam
DE1950406C3 (en) * 1968-10-15 1981-12-03 USM Corp., 06032 Farmington, Conn. Process for the injection molding of objects from a mixture of a foamable plastic and a temperature-sensitive blowing agent

Also Published As

Publication number Publication date
DK142608B (en) 1980-12-01
DE2204157C3 (en) 1989-02-23
ATA68972A (en) 1977-07-15
FI56641C (en) 1980-03-10
FI56641B (en) 1979-11-30
IL38667A (en) 1975-05-22
DE2204157A1 (en) 1972-08-10
FR2123540A1 (en) 1972-09-08
BE778748A (en) 1972-05-16
NL172131B (en) 1983-02-16
IL38667A0 (en) 1972-03-28
IS2054A7 (en) 1972-02-16
CH533001A (en) 1973-01-31
CA977114A (en) 1975-11-04
FR2123540B1 (en) 1975-10-24
NL172131C (en) 1983-07-18
PL84475B1 (en) 1976-04-30
CS166042B2 (en) 1976-01-29
IT947068B (en) 1973-05-21
NL7201213A (en) 1972-08-01
DE2204157B2 (en) 1981-02-26
DK142608C (en) 1981-08-03
HU167065B (en) 1975-07-28
AT342290B (en) 1978-03-28
GB1382274A (en) 1975-01-29
JPS5428426B1 (en) 1979-09-17
NO138281B (en) 1978-05-02
NO138281C (en) 1978-08-09
ES399703A1 (en) 1974-12-01

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