DK626988A - METHOD AND DEVICE FOR CRYSTALLIZING A THERMOPLASTIC MATERIAL - Google Patents

METHOD AND DEVICE FOR CRYSTALLIZING A THERMOPLASTIC MATERIAL

Info

Publication number
DK626988A
DK626988A DK626988A DK626988A DK626988A DK 626988 A DK626988 A DK 626988A DK 626988 A DK626988 A DK 626988A DK 626988 A DK626988 A DK 626988A DK 626988 A DK626988 A DK 626988A
Authority
DK
Denmark
Prior art keywords
plunger
thermoplastic material
compression forces
temperature
mould part
Prior art date
Application number
DK626988A
Other languages
Danish (da)
Other versions
DK173354B1 (en
DK626988D0 (en
Inventor
Ulla Oehlenschlaeger
Jan Rune Pedersen
Erling Soerensen
Original Assignee
Plm Ab
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 SE8701088A external-priority patent/SE505485C2/en
Application filed by Plm Ab filed Critical Plm Ab
Publication of DK626988D0 publication Critical patent/DK626988D0/en
Publication of DK626988A publication Critical patent/DK626988A/en
Application granted granted Critical
Publication of DK173354B1 publication Critical patent/DK173354B1/en

Links

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

A crystalliseable thermoplastic material is crystallised at a temperature which exceeds the glass transition temperature of the material 13 by exposing the material to compression forces at the increased temperature. These compression forces generally reduce the thickness of material by at least 20%, preferably by at last 40%. A device for performing the method comprises a plunger 20 and a mould part 30, which are designed to be displaceable in relation to one another to a minimum distance at which the thermoplastic material 13 lying between the plunger and the mould part is exposed to compression forces. Elements 29, 39 are arranged in the plunger 20 and/or the mould part 30 for setting and maintaining a predetermined temperature on the sides 23, 33 of the plunger and the mould plate respectively, which bear against the thermoplastic material. <IMAGE>
DK198806269A 1987-03-17 1988-11-10 Method for the crystallisation and forming of the base section of a cup or a cup-shaped object DK173354B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8701088 1987-03-17
SE8701088A SE505485C2 (en) 1987-03-17 1987-03-17 Method and apparatus for crystallizing and forming the bottom portion of a cup or cup-like object
PCT/SE1988/000130 WO1988006962A1 (en) 1987-03-17 1988-03-15 A method and a device for crystallizing thermoplastic material
SE8800130 1988-03-15

Publications (3)

Publication Number Publication Date
DK626988D0 DK626988D0 (en) 1988-11-10
DK626988A true DK626988A (en) 1988-11-10
DK173354B1 DK173354B1 (en) 2000-08-07

Family

ID=26659738

Family Applications (1)

Application Number Title Priority Date Filing Date
DK198806269A DK173354B1 (en) 1987-03-17 1988-11-10 Method for the crystallisation and forming of the base section of a cup or a cup-shaped object

Country Status (2)

Country Link
DK (1) DK173354B1 (en)
NO (1) NO885065L (en)

Also Published As

Publication number Publication date
DK173354B1 (en) 2000-08-07
DK626988D0 (en) 1988-11-10
NO885065D0 (en) 1988-11-14
NO885065L (en) 1988-11-14

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed

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