FR2380116A1 - METHOD AND APPARATUS FOR STRETCHING A TUBULAR SHEET OF THERMOPLASTIC MATERIAL AND PRODUCT THUS OBTAINED - Google Patents

METHOD AND APPARATUS FOR STRETCHING A TUBULAR SHEET OF THERMOPLASTIC MATERIAL AND PRODUCT THUS OBTAINED

Info

Publication number
FR2380116A1
FR2380116A1 FR7803316A FR7803316A FR2380116A1 FR 2380116 A1 FR2380116 A1 FR 2380116A1 FR 7803316 A FR7803316 A FR 7803316A FR 7803316 A FR7803316 A FR 7803316A FR 2380116 A1 FR2380116 A1 FR 2380116A1
Authority
FR
France
Prior art keywords
sheet
rollers
speed
thermoplastic material
stretching
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Withdrawn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
FR7803316A
Other languages
French (fr)
Inventor
Eckhard C A Schwarz
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.)
Biax Fiberfilm Corp
Original Assignee
Biax Fiberfilm Corp
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 US05/766,926 external-priority patent/US4144008A/en
Application filed by Biax Fiberfilm Corp filed Critical Biax Fiberfilm Corp
Publication of FR2380116A1 publication Critical patent/FR2380116A1/en
Withdrawn legal-status Critical Current

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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un procédé d'étirage longitudinal d'une feuille tubulaire de matière polymère orientable. Selon ce procédé en thermosoude la feuille à des intervalles choisis à l'avance, perpendiculairement à son mouvement, on introduit la feuille des rouleaux engrenant entre eux, munis de gorges parallèles à leur axe, on règle la vitesse d'introduction de la feuille entre les rouleaux pratiquement à la vitesse de rotation des rouleaux, on retire la feuille des rouleaux à une vitesse supérieure à leur vitesse de rotation et on recueille la feuille ainsi étirée. L'invention s'applique notamment à la fabrication de sacs en matière thermoplastique.A method of longitudinal stretching of a tubular sheet of orientable polymeric material is disclosed. According to this process by heat-sealing the sheet at intervals chosen in advance, perpendicular to its movement, the sheet is introduced from the rollers meshing with each other, provided with grooves parallel to their axis, the speed of introduction of the sheet between With the rollers at substantially the speed of rotation of the rollers, the sheet is withdrawn from the rollers at a speed greater than their speed of rotation and the sheet thus stretched is collected. The invention applies in particular to the manufacture of bags of thermoplastic material.

FR7803316A 1977-02-09 1978-02-07 METHOD AND APPARATUS FOR STRETCHING A TUBULAR SHEET OF THERMOPLASTIC MATERIAL AND PRODUCT THUS OBTAINED Withdrawn FR2380116A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/766,926 US4144008A (en) 1975-03-31 1977-02-09 Apparatus for stretching a tubularly-formed sheet of thermoplastic material

Publications (1)

Publication Number Publication Date
FR2380116A1 true FR2380116A1 (en) 1978-09-08

Family

ID=25077949

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803316A Withdrawn FR2380116A1 (en) 1977-02-09 1978-02-07 METHOD AND APPARATUS FOR STRETCHING A TUBULAR SHEET OF THERMOPLASTIC MATERIAL AND PRODUCT THUS OBTAINED

Country Status (18)

Country Link
JP (1) JPS53124579A (en)
AU (1) AU3276978A (en)
BE (1) BE863806A (en)
BR (1) BR7800746A (en)
CA (1) CA1123566A (en)
DE (1) DE2805440C2 (en)
DK (1) DK57278A (en)
ES (1) ES466802A1 (en)
FI (1) FI780340A (en)
FR (1) FR2380116A1 (en)
GB (2) GB1598738A (en)
IT (1) IT1092580B (en)
LU (1) LU79030A1 (en)
NL (1) NL7801529A (en)
NO (1) NO780430L (en)
PT (1) PT67610B (en)
SE (1) SE7801484L (en)
ZA (1) ZA78643B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587334A (en) * 1981-07-04 1983-01-17 Sumitomo Electric Ind Ltd Preparation of stringy porous product
GB8424062D0 (en) * 1984-09-24 1984-10-31 Mackley M R Oriented polymer films
GB2362351B (en) * 2000-03-18 2004-01-14 Harris Parts Ltd Extruded packaging material
TWI227196B (en) * 2002-02-22 2005-02-01 Clopay Plastic Prod Co Film, laminated sheet and methods of making same
US7932196B2 (en) 2003-08-22 2011-04-26 Kimberly-Clark Worldwide, Inc. Microporous stretch thinned film/nonwoven laminates and limited use or disposable product applications
US7651653B2 (en) 2004-12-22 2010-01-26 Kimberly-Clark Worldwide, Inc. Machine and cross-machine direction elastic materials and methods of making same
GB0721410D0 (en) * 2007-10-31 2007-12-12 Rasmussen O B Method and apparatus for longitudinal orientation of thermoplastic film material
GB0907755D0 (en) * 2009-05-06 2009-06-24 Rasmussen O B Method for longitudinal stretching a film in solid state and apparatus to carry out the method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773285A (en) * 1947-11-06 1956-12-11 Continental Can Co Method of making sterile containers
FR2276918A1 (en) * 1974-07-05 1976-01-30 Rasmussen O B HIGH RESISTANCE LAMINATE PRODUCT COMPOSED OF THERMOPLASTIC POLYMER FILMS AND ITS MANUFACTURING PROCESS
FR2292629A1 (en) * 1974-11-26 1976-06-25 Union Carbide Corp PACKAGING CONSTITUTED OF A SHEET OF ORIENTED PLASTIC MATERIAL AND THEIR MANUFACTURING PROCESS
DE2613822A1 (en) * 1975-03-31 1976-10-14 Eckhard C A Schwarz METHOD AND DEVICE FOR STRETCHING NON-WOVEN WEBLES OF ORIENTED, POLYMERIC MATERIAL
DE2641533A1 (en) * 1975-09-17 1977-03-31 Biax Fiberfilm Corp METHOD OF STRETCHING A THERMOPLASTIC MATERIAL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB756476A (en) * 1954-03-19 1956-09-05 Ici Ltd Improvements in the seaming of films
DE1504502B2 (en) * 1962-03-17 1971-08-12 Lindauer Dormer GmbH, 8990 Lin dau RECKING SYSTEM FOR BIAXIAL RECKNING OF A THERMOPLASTIC PLASTIC FILM
DE2037574A1 (en) * 1970-07-29 1972-02-10 Wolff Walsrode Ag Drawn plastics film - by drawn flatterned film tube without bonding surfaces of the flattened film tube

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773285A (en) * 1947-11-06 1956-12-11 Continental Can Co Method of making sterile containers
FR2276918A1 (en) * 1974-07-05 1976-01-30 Rasmussen O B HIGH RESISTANCE LAMINATE PRODUCT COMPOSED OF THERMOPLASTIC POLYMER FILMS AND ITS MANUFACTURING PROCESS
FR2292629A1 (en) * 1974-11-26 1976-06-25 Union Carbide Corp PACKAGING CONSTITUTED OF A SHEET OF ORIENTED PLASTIC MATERIAL AND THEIR MANUFACTURING PROCESS
DE2613822A1 (en) * 1975-03-31 1976-10-14 Eckhard C A Schwarz METHOD AND DEVICE FOR STRETCHING NON-WOVEN WEBLES OF ORIENTED, POLYMERIC MATERIAL
DE2641533A1 (en) * 1975-09-17 1977-03-31 Biax Fiberfilm Corp METHOD OF STRETCHING A THERMOPLASTIC MATERIAL

Also Published As

Publication number Publication date
DE2805440A1 (en) 1978-08-10
ZA78643B (en) 1978-12-27
PT67610B (en) 1979-07-16
IT1092580B (en) 1985-07-12
DE2805440C2 (en) 1981-09-17
GB1598737A (en) 1981-09-23
JPS53124579A (en) 1978-10-31
DK57278A (en) 1978-08-10
LU79030A1 (en) 1978-09-28
GB1598738A (en) 1981-09-23
IT7820062A0 (en) 1978-02-07
AU3276978A (en) 1979-08-02
BE863806A (en) 1978-08-09
CA1123566A (en) 1982-05-18
NL7801529A (en) 1978-08-11
SE7801484L (en) 1978-08-10
PT67610A (en) 1978-03-01
ES466802A1 (en) 1979-01-16
FI780340A (en) 1978-08-10
BR7800746A (en) 1978-09-12
NO780430L (en) 1978-08-10

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Legal Events

Date Code Title Description
ST Notification of lapse