[go: up one dir, main page]

NL7313294A - Thin-walled thermoplastic mouldings - cooling surfaces of plastic strip leaving centre at extrusion temp. - Google Patents

Thin-walled thermoplastic mouldings - cooling surfaces of plastic strip leaving centre at extrusion temp.

Info

Publication number
NL7313294A
NL7313294A NL7313294A NL7313294A NL7313294A NL 7313294 A NL7313294 A NL 7313294A NL 7313294 A NL7313294 A NL 7313294A NL 7313294 A NL7313294 A NL 7313294A NL 7313294 A NL7313294 A NL 7313294A
Authority
NL
Netherlands
Prior art keywords
strip
thin
plastic strip
mouldings
thermo
Prior art date
Application number
NL7313294A
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 DE19722252219 external-priority patent/DE2252219B2/en
Priority claimed from DE19732328368 external-priority patent/DE2328368B2/en
Application filed filed Critical
Publication of NL7313294A publication Critical patent/NL7313294A/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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/004—Arrangements for converting the motion of a material which is continuously fed to a working station in a stepwise motion
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/02—Combined thermoforming and manufacture of the preform
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/32—Moulds having cutting means
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/421—Heating or cooling of preforms, specially adapted for thermoforming
    • B29C51/422—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential
    • B29C51/423—Heating or cooling of preforms, specially adapted for thermoforming to produce a temperature differential through the thickness of the preform
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0094—Geometrical properties
    • B29K2995/0096—Dimensional stability

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

Continuous prodn of thin-walled thermoplastic mouldings by the known technique of extruding the compresses and heated material from a slit-type nozzle as a plastic strip, then thermo-forming this to produce the mouldings which are then sepd. from the strip and carried away, wherein (a) after leaving the extrusion nozzle, the hot plastic strip is stabilised by cooling both surfaces sufficiently to leave them still deformable while the material in the interior between the surfaces is still at extrusion temp. (b) during thermo-forming at least one pre-cooled surface of the strip is moulded on a cooled forming tool, while the still plastic material in the interior is distributed between the preformed surfaces; (c) the strip of material to be thermo-formed is transported vertically and formed horizontally, and (d) the moulding is sepd. from the strip material in one step and is then cooled further.
NL7313294A 1972-10-25 1973-09-27 Thin-walled thermoplastic mouldings - cooling surfaces of plastic strip leaving centre at extrusion temp. NL7313294A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722252219 DE2252219B2 (en) 1972-10-25 1972-10-25 METHOD AND DEVICE FOR PRODUCING THIN-WALLED MOLDINGS FROM THERMOPLASTIC PLASTIC
DE19732328368 DE2328368B2 (en) 1973-06-04 1973-06-04 THERMO FORMING DEVICE FOR THE PRODUCTION OF MOLDINGS OF LARGE DEPTH FROM A RELATIVELY THICK PLASTIC STRIP

Publications (1)

Publication Number Publication Date
NL7313294A true NL7313294A (en) 1974-12-06

Family

ID=25764001

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7313294A NL7313294A (en) 1972-10-25 1973-09-27 Thin-walled thermoplastic mouldings - cooling surfaces of plastic strip leaving centre at extrusion temp.
NLAANVRAGE7314718,A NL172928C (en) 1972-10-25 1973-10-25 METHOD AND APPARATUS FOR MANUFACTURING THIN-WALLED FORMS OF THERMOPLASTIC PLASTIC

Family Applications After (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7314718,A NL172928C (en) 1972-10-25 1973-10-25 METHOD AND APPARATUS FOR MANUFACTURING THIN-WALLED FORMS OF THERMOPLASTIC PLASTIC

Country Status (2)

Country Link
IT (1) IT998961B (en)
NL (2) NL7313294A (en)

Also Published As

Publication number Publication date
NL7314718A (en) 1974-04-29
NL172928B (en) 1983-06-16
IT998961B (en) 1976-02-20
NL172928C (en) 1983-11-16

Similar Documents

Publication Publication Date Title
US4239727A (en) Method and apparatus for thermoforming thermoplastic foam articles
ES431364A1 (en) Extrusion of hollow articles through a lubricated die
IL64851A (en) Method of making synthetic resin mouldings and tubular parts
IL58549A0 (en) Method and apparatus for producing molded plastic articles
GB1343732A (en) Manufacture of hollow bodies of synthetic resinous material
GB1051892A (en)
FR2194548A1 (en) Hollow propylene polymer articles - by drawing heated cut, tubular pieces and blow moulding drawn pieces
SE8103799L (en) PROCEDURE AND DEVICE FOR THE PREPARATION OF THIN-WALL FORM PRODUCTS OF THERMOPLASTIC ARTICLES
NL7313294A (en) Thin-walled thermoplastic mouldings - cooling surfaces of plastic strip leaving centre at extrusion temp.
FR2204496A1 (en) In line thermoforming thin walled plastics articles - from band with cooled surface skin but hot core, avoids marks on finished product
FR1602792A (en) Combined extrusion and injection moulding equipment for
ES384742A2 (en) Process and apparatus for the extrusion of expansible plastics material
JPH09104025A (en) Press molding method for thermoplastic resin
ES447093A1 (en) Method and apparatus for forming articles from a band of sheet thermo plastics material
FR2243063A1 (en) Thermoforming press for plastic strip - with pre-cooling tools permitting faster cooling of underformed zones
JPS55156033A (en) Skin attached foamed blow molded article method of fabricating the same
US3505441A (en) Process for the manufacture of plastic articles having a crackle finish
DE1936952A1 (en) Blow-mouldable thermoplastic containers - with elimination of temp. gradients in the blank
NL7002188A (en) Blow moulded plastic containers prodn
ES398320A1 (en) Process for moulding structures of plastics material
FR2187531A1 (en) Injection moulding - by initially shaping material between heated male and female parts and finally shaping/additional part
FR2192900A1 (en) Thermoplastic bottles prodn - including cooling neck portion before forming body
NL7207474A (en) Injection moulding - by initially shaping material between heated male and female parts and finally shaping/additional part
GB1226321A (en)
GB1156071A (en) Apparatus and method for Polymer Molding and Orientation and articles formed therefrom

Legal Events

Date Code Title Description
BV The patent application has lapsed