FR2160786A1 - Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste - Google Patents

Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste

Info

Publication number
FR2160786A1
FR2160786A1 FR7143630A FR7143630A FR2160786A1 FR 2160786 A1 FR2160786 A1 FR 2160786A1 FR 7143630 A FR7143630 A FR 7143630A FR 7143630 A FR7143630 A FR 7143630A FR 2160786 A1 FR2160786 A1 FR 2160786A1
Authority
FR
France
Prior art keywords
pref
former
tube
fit
thick walled
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.)
Granted
Application number
FR7143630A
Other languages
French (fr)
Other versions
FR2160786B1 (en
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.)
Schuhl & Hirsch
Original Assignee
Schuhl & Hirsch
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 Schuhl & Hirsch filed Critical Schuhl & Hirsch
Priority to FR7143630A priority Critical patent/FR2160786A1/en
Publication of FR2160786A1 publication Critical patent/FR2160786A1/en
Application granted granted Critical
Publication of FR2160786B1 publication Critical patent/FR2160786B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/26—Manufacturing shades

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Protection Of Plants (AREA)

Abstract

Hollow articles are made by fastening the ends of a tube of heat shrinkable material over a suitable former, heat contacting the tube to fit the smaller sections of the former, and removing the former. Pref. a pair of formers are mounted back to back with the smallest sections in the middle. Pref. the former(s) with the tube mounted can rotate past a fixed heater. Pref. the equipment incorporates a knife for cutting the shrunk fit tube in two. Pref. an ancillary tool can turn the cut edges of the film to fit channels in the base of each former. After the material is chilled, the formers are pref. sepd. along their axis of rotation. Esp suitable for making lampshades, flower pots, hats or similar shapes.
FR7143630A 1971-11-26 1971-11-26 Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste Granted FR2160786A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7143630A FR2160786A1 (en) 1971-11-26 1971-11-26 Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7143630A FR2160786A1 (en) 1971-11-26 1971-11-26 Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste

Publications (2)

Publication Number Publication Date
FR2160786A1 true FR2160786A1 (en) 1973-07-06
FR2160786B1 FR2160786B1 (en) 1973-11-30

Family

ID=9086950

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7143630A Granted FR2160786A1 (en) 1971-11-26 1971-11-26 Heat shrunk hollow mouldings - for producing thick walled narrow sections with negligible waste

Country Status (1)

Country Link
FR (1) FR2160786A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587075A (en) * 1983-04-22 1986-05-06 Metal Box P.L.C. Method and apparatus for making dimensionally stable thermoplastic tubular articles
EP0595461A1 (en) * 1992-10-30 1994-05-04 Welwyn Lighting Designs Limited Method of manufacturing lampshades and apparatus for performing the method
ES2068760A2 (en) * 1993-07-20 1995-04-16 Lopez Alfonso Armero Machine for sheathing lamp shades with shrinkable material, and corresponding method
US5603800A (en) * 1994-02-23 1997-02-18 Welwyn Lighting Designs Limited Apparatus for manufacturing lampshades
US5820896A (en) * 1995-06-05 1998-10-13 Welwyn Lighting Designs Limited Method of manufacturing lampshades and apparatus for performing the method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587075A (en) * 1983-04-22 1986-05-06 Metal Box P.L.C. Method and apparatus for making dimensionally stable thermoplastic tubular articles
EP0595461A1 (en) * 1992-10-30 1994-05-04 Welwyn Lighting Designs Limited Method of manufacturing lampshades and apparatus for performing the method
US5472656A (en) * 1992-10-30 1995-12-05 Welwyn Lighting Designs Limited Method of manufacturing lampshades and apparatus for performing the method
ES2068760A2 (en) * 1993-07-20 1995-04-16 Lopez Alfonso Armero Machine for sheathing lamp shades with shrinkable material, and corresponding method
US5603800A (en) * 1994-02-23 1997-02-18 Welwyn Lighting Designs Limited Apparatus for manufacturing lampshades
US5820896A (en) * 1995-06-05 1998-10-13 Welwyn Lighting Designs Limited Method of manufacturing lampshades and apparatus for performing the method

Also Published As

Publication number Publication date
FR2160786B1 (en) 1973-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse