FR2447262A1 - Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths - Google Patents

Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths

Info

Publication number
FR2447262A1
FR2447262A1 FR7902013A FR7902013A FR2447262A1 FR 2447262 A1 FR2447262 A1 FR 2447262A1 FR 7902013 A FR7902013 A FR 7902013A FR 7902013 A FR7902013 A FR 7902013A FR 2447262 A1 FR2447262 A1 FR 2447262A1
Authority
FR
France
Prior art keywords
bracelets
polypropylene film
pref
various widths
hoops
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.)
Withdrawn
Application number
FR7902013A
Other languages
French (fr)
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.)
BING TANG LIN SPENCER
Original Assignee
BING TANG LIN SPENCER
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 BING TANG LIN SPENCER filed Critical BING TANG LIN SPENCER
Priority to FR7902013A priority Critical patent/FR2447262A1/en
Publication of FR2447262A1 publication Critical patent/FR2447262A1/en
Priority to OA57531A priority patent/OA06935A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D63/00—Flexible elongated elements, e.g. straps, for bundling or supporting articles
    • B65D63/10—Non-metallic straps, tapes, or bands; Filamentary elements, e.g. strings, threads or wires; Joints between ends thereof
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

Polypropylene bracelets are made fom extrusion-blown tubing cut into hoops which are twisted after being drawn. Pref. film is 0.03-0.1, esp. 0.05-0.06 mm thick stretched at a temp, between ambient and 40 degrees C to a draw ratio of >4, pref. in the range 5-7, so that the flattened film is 15-50, pref. 20-50 mm wide, cut into segments 10-60 mm long, and stretched to a flattened length of 7.5-35 cm with a tensile strength of at least 6 kg typically 10-14 kg. More efficient than mfr. from longitudinally drawn extruded tape. Convenient for producing bracelets of similar dia. in a variety of widths.
FR7902013A 1979-01-26 1979-01-26 Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths Withdrawn FR2447262A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7902013A FR2447262A1 (en) 1979-01-26 1979-01-26 Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths
OA57531A OA06935A (en) 1979-01-26 1981-11-04 Manufacturing process of polypropylene wristbands for packaging.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902013A FR2447262A1 (en) 1979-01-26 1979-01-26 Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths

Publications (1)

Publication Number Publication Date
FR2447262A1 true FR2447262A1 (en) 1980-08-22

Family

ID=9221236

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902013A Withdrawn FR2447262A1 (en) 1979-01-26 1979-01-26 Bracelets of oriented hoops of extrusion blown polypropylene film - for producing strong bracelets of various widths

Country Status (2)

Country Link
FR (1) FR2447262A1 (en)
OA (1) OA06935A (en)

Also Published As

Publication number Publication date
OA06935A (en) 1983-07-31

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Legal Events

Date Code Title Description
ST Notification of lapse