UST873007I4 - Method and apparatus for the productiok op extruded tubirg - Google Patents

Method and apparatus for the productiok op extruded tubirg Download PDF

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Publication number
UST873007I4
UST873007I4 US873007DH UST873007I4 US T873007 I4 UST873007 I4 US T873007I4 US 873007D H US873007D H US 873007DH US T873007 I4 UST873007 I4 US T873007I4
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US
United States
Prior art keywords
extruded
tubirg
productiok
tubing
die
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.)
Pending
Application number
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 GB28681/68A external-priority patent/GB1202961A/en
Application filed filed Critical
Application granted granted Critical
Publication of UST873007I4 publication Critical patent/UST873007I4/en
Pending legal-status Critical Current

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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
    • B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material

Definitions

  • a method and apparatus are disclosed for the production of extruded tubing made of polymeric materials.
  • the process consists of the sequential steps of extruding the polymeric material first through a water-cooled vacuum sizing die having a smooth central bore (1) with a vacuum zone at either end, and then a contraction die having a smooth passageway (23) therethrough a decreasing size from the entry point to the exit point.
  • the contraction die is mounted adjacent to the vacuum die (FIG. 3).
  • the preferred polymeric material to be used according to the process is 4-methyl pentene-l. Because of the high melting point of 4-methyl pentene-l, tubing thus produced has a smooth surface finish, can be easily sterilized, and. is suitable for laboratory, hospital and dairy equipment.
  • a hot extruded parison at a temperature in excess of the melting point of the polymeric material is passed into the vacuum die, suction is applied through the vacuum zone thereby causing the tubing to conform to the smooth surface ofthe bore.
  • the heated tubing is then passed into the contraction die where it cools and contracts. Tubing having a smooth surface finish results,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request at the applicant or owner in accordance with the Notice ot Dec. 16, 1989. 809 0.6. 081'. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number or pages of specification, including claims and sheets or drawings cantnijied in the application as originally tiled. The files at these applications are available to the public for inspection and reproduction may be purchased tor 80 cents a sheet.
Defensive Publication applications have not been examined as to the merits oi alleged invention. The Patent Otlice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED APRIL 1-1, 1970 6 Int. Cl. 1529c 17/07; B29d 23/ 04 US. Cl. 26490 2 Sheets Drawing. 5 Pages Specification A method and apparatus are disclosed for the production of extruded tubing made of polymeric materials. The process consists of the sequential steps of extruding the polymeric material first through a water-cooled vacuum sizing die having a smooth central bore (1) with a vacuum zone at either end, and then a contraction die having a smooth passageway (23) therethrough a decreasing size from the entry point to the exit point. The contraction die is mounted adjacent to the vacuum die (FIG. 3). v
The preferred polymeric material to be used according to the process is 4-methyl pentene-l. Because of the high melting point of 4-methyl pentene-l, tubing thus produced has a smooth surface finish, can be easily sterilized, and. is suitable for laboratory, hospital and dairy equipment.
A hot extruded parison at a temperature in excess of the melting point of the polymeric material is passed into the vacuum die, suction is applied through the vacuum zone thereby causing the tubing to conform to the smooth surface ofthe bore. The heated tubing is then passed into the contraction die where it cools and contracts. Tubing having a smooth surface finish results,
on T $13.00?
April 14, T873,001
I D TUBING Filed Juno 2, 1969 a Sheets-Sheet 1 aw-saa SF:
on T 13.00?
April 1970 A. P. BENNETT ETAL T873,001
METHOD AND APPARATUS FOR THE PRODUCTION OF EXTHUDED TUBING Filed June 2. 1969 3 Sheets-Sheet 8
US873007D 1968-06-17 1969-06-02 Method and apparatus for the productiok op extruded tubirg Pending UST873007I4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB28681/68A GB1202961A (en) 1968-06-17 1968-06-17 Tube production
NL6909239A NL6909239A (en) 1968-06-17 1969-06-17

Publications (1)

Publication Number Publication Date
UST873007I4 true UST873007I4 (en) 1970-04-14

Family

ID=26259506

Family Applications (1)

Application Number Title Priority Date Filing Date
US873007D Pending UST873007I4 (en) 1968-06-17 1969-06-02 Method and apparatus for the productiok op extruded tubirg

Country Status (2)

Country Link
US (1) UST873007I4 (en)
NL (1) NL6909239A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5516270A (en) * 1989-09-22 1996-05-14 Jrt-Finland Oy Sizing tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5516270A (en) * 1989-09-22 1996-05-14 Jrt-Finland Oy Sizing tool

Also Published As

Publication number Publication date
NL6909239A (en) 1969-08-25

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