FR2317076A2 - Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching - Google Patents

Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching

Info

Publication number
FR2317076A2
FR2317076A2 FR7521202A FR7521202A FR2317076A2 FR 2317076 A2 FR2317076 A2 FR 2317076A2 FR 7521202 A FR7521202 A FR 7521202A FR 7521202 A FR7521202 A FR 7521202A FR 2317076 A2 FR2317076 A2 FR 2317076A2
Authority
FR
France
Prior art keywords
grippers
self
propelling
film
edges
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
FR7521202A
Other languages
French (fr)
Other versions
FR2317076B2 (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.)
Cellophane SA France
Original Assignee
Cellophane SA France
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 Cellophane SA France filed Critical Cellophane SA France
Priority to FR7521202A priority Critical patent/FR2317076A2/en
Priority to IT5018376A priority patent/IT1066270B/en
Priority to DE19767621499 priority patent/DE7621499U1/en
Publication of FR2317076A2 publication Critical patent/FR2317076A2/en
Application granted granted Critical
Publication of FR2317076B2 publication Critical patent/FR2317076B2/fr
Granted 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
    • B29C55/20—Edge clamps
    • 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
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
    • B29C55/165—Apparatus therefor

Abstract

Device for monoaxial or biaxial, successive or simultaneous drawing of films of plastic material allows longitudinal drawing by the displacement of self-propelling grippers which grip the edges of the film. Between two successive self-propleeling grippers are disposed at least one, pref. several independent grippers which grip the edge of the film and which are displaced freely along guide means. Pref. the self-propelling grippers are attached to carriages of which the displacement is ensured by the action of linear motors. The independent grippers are driven by the film itself as drawing proceeds, and move progressively away from the adjacent self-propelling grippers. The arches which form between the edges of adjacent grippers are reduced in size, and the film edges which ahve to be eliminated are narrower.
FR7521202A 1975-07-07 1975-07-07 Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching Granted FR2317076A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7521202A FR2317076A2 (en) 1975-07-07 1975-07-07 Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching
IT5018376A IT1066270B (en) 1975-07-07 1976-06-28 DRY DEVELOPMENT DEVICE FOR REPRODUCTION MACHINES
DE19767621499 DE7621499U1 (en) 1975-07-07 1976-07-07 DEVICE FOR STRETCHING PLASTIC FILMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7521202A FR2317076A2 (en) 1975-07-07 1975-07-07 Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching

Publications (2)

Publication Number Publication Date
FR2317076A2 true FR2317076A2 (en) 1977-02-04
FR2317076B2 FR2317076B2 (en) 1979-06-15

Family

ID=9157578

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521202A Granted FR2317076A2 (en) 1975-07-07 1975-07-07 Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching

Country Status (3)

Country Link
DE (1) DE7621499U1 (en)
FR (1) FR2317076A2 (en)
IT (1) IT1066270B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527975A1 (en) * 1982-06-08 1983-12-09 Dornier Gmbh Lindauer Tentering device stretches film longitudinally - using clips driven at different speeds by sprocket chains or electric motors
US4736498A (en) * 1985-08-17 1988-04-12 Lindauer Dornier Gesellschaft Mbh Tentering chain guide track for roller-supported tenter clamps
US4853602A (en) * 1985-12-24 1989-08-01 E. I. Dupont De Nemours And Company System for using synchronous secondaries of a linear motor to biaxially draw plastic films
EP0422035A1 (en) * 1988-06-22 1991-04-17 Du Pont Method and apparatus for drawing film.
US5072493A (en) * 1988-06-22 1991-12-17 E. I. Du Pont De Nemours And Company Apparatus for drawing plastic film in a tenter frame
WO1996029190A1 (en) * 1995-03-21 1996-09-26 Brückner Maschinenbau GmbH Transport device for a continuous moving sheet, in particular a stretching device for a plastic film sheet
WO1996029191A1 (en) * 1995-03-21 1996-09-26 Brückner Maschinenbau GmbH Transport device for a continuous moving web of material, in particular a stretching device for plastic film webs
WO2001045920A1 (en) * 1999-12-21 2001-06-28 3M Innovative Properties Company Method of stretching film and such film
US6965474B2 (en) 2003-02-12 2005-11-15 3M Innovative Properties Company Polymeric optical film

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014013901A1 (en) * 2014-09-18 2016-03-24 Brückner Maschinenbau GmbH & Co. KG Linear motor driven simultaneous stretching machine
DE102016218467A1 (en) 2016-09-26 2018-03-29 Technische Universität Dresden Holding device and method for holding a flat workpiece

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2113892A1 (en) * 1970-11-12 1972-06-30 Dornier Gmbh Lindauer Biaxial film stretching - with loosely turning pressure rollers in direction of guideways

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2113892A1 (en) * 1970-11-12 1972-06-30 Dornier Gmbh Lindauer Biaxial film stretching - with loosely turning pressure rollers in direction of guideways

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527975A1 (en) * 1982-06-08 1983-12-09 Dornier Gmbh Lindauer Tentering device stretches film longitudinally - using clips driven at different speeds by sprocket chains or electric motors
US4736498A (en) * 1985-08-17 1988-04-12 Lindauer Dornier Gesellschaft Mbh Tentering chain guide track for roller-supported tenter clamps
US4853602A (en) * 1985-12-24 1989-08-01 E. I. Dupont De Nemours And Company System for using synchronous secondaries of a linear motor to biaxially draw plastic films
EP0422035A4 (en) * 1988-06-22 1992-11-04 E.I. Du Pont De Nemours And Company Method and apparatus for drawing film
US5051225A (en) * 1988-06-22 1991-09-24 E. I. Du Pont De Nemours And Company Method of drawing plastic film in a tenter frame
US5072493A (en) * 1988-06-22 1991-12-17 E. I. Du Pont De Nemours And Company Apparatus for drawing plastic film in a tenter frame
EP0422035A1 (en) * 1988-06-22 1991-04-17 Du Pont Method and apparatus for drawing film.
WO1996029190A1 (en) * 1995-03-21 1996-09-26 Brückner Maschinenbau GmbH Transport device for a continuous moving sheet, in particular a stretching device for a plastic film sheet
WO1996029191A1 (en) * 1995-03-21 1996-09-26 Brückner Maschinenbau GmbH Transport device for a continuous moving web of material, in particular a stretching device for plastic film webs
US5737812A (en) * 1995-03-21 1998-04-14 Bruckner Maschinenbau Gmbh Transport device for a moving material web
US5749131A (en) * 1995-03-21 1998-05-12 Bruckner Maschinenbau Gmbh Transport device for a continuous moving sheet, in particular stretching device for a plastic film webs
WO2001045920A1 (en) * 1999-12-21 2001-06-28 3M Innovative Properties Company Method of stretching film and such film
US7037461B1 (en) 1999-12-21 2006-05-02 3M Innovative Properties Company Method of stretching film
US6965474B2 (en) 2003-02-12 2005-11-15 3M Innovative Properties Company Polymeric optical film

Also Published As

Publication number Publication date
IT1066270B (en) 1985-03-04
FR2317076B2 (en) 1979-06-15
DE7621499U1 (en) 1976-11-25

Similar Documents

Publication Publication Date Title
FR2317076A2 (en) Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching
ES391123A1 (en) Device for drawing thermoplastic sheet material
GB1469132A (en) Apparatus for holding flexible sheet material
NL178344B (en) SUCTION VACUUM WITH ROLLER IN THE SUCTION TUBE SUCTION HEAD.
ZA721853B (en) Apparatus for tempering curved sheets of materials in the plastic state
BE800788A (en) TRANSPORT GUIDE FOR SOFT SHEET MATERIAL
BE606840A (en) Improved method and means for marking folds and / or cutting cardboard and the like flexible sheet material.
AT318123B (en) Device for the continuous scarring of sheet-shaped, flexible flat goods, such as synthetic leather sheets or the like.
GB1272892A (en) Method and apparatus for trimming the lateral edges of belt-like bodies
CH516462A (en) Device for deflecting flexible webs, preferably thin plastic films
IT983496B (en) CUTTING OR PERFORATION DEVICE FOR TAPES OR SHEETS WHICH UNWIND CONTINUOUSLY
FR2113892A1 (en) Biaxial film stretching - with loosely turning pressure rollers in direction of guideways
CA988740A (en) Apparatus for determining the tensile stress in a continuously moving web of material
FR2313269A1 (en) Pile of large plastics backs rolling machine - automatically forms pile at one end and transfers it to other end to apply adhesive tape
CA956076A (en) Method for laying flexible covering sheets on partition-walls, accessory and partition-wall for the application of said method
NL171677C (en) METHOD AND APPARATUS FOR COATING A STEEL TUBE WITH THERMOPLASTIC PLASTIC
FR2041737A7 (en) Fixing electric cable on pneumatic tube
FR2042991A5 (en) Horticultural cloche
FR2260680A2 (en) Hoop forming shelter of adjustable width - is formed of bars fixed together in pairs by means of sliding rings
FR2336531A1 (en) Retractable core for concrete shuttering - consists of two sets of sloping edge sections joined together by channels and moved by screws
FR2268733A1 (en) Local treatment system for moving strip - has independently actuated rotating local treatment stations for strip material
FR2330626A1 (en) Strip material glue jointing system - has guides adjustable for different widths and adjustable adhesive tape feed
FR2208774A1 (en) Biaxially stretching thermoplastics sheet - edge beading for transverse stretching is formed after sheet is stretched longitudinally
FR2033506A5 (en) Unilaterally curved plastic sheets with a - permanent winding characteristic
FR2317093A1 (en) DEVICE WITH SUCTION STRIPS FOR APPLYING REINFORCING SHEETS GLUED ON ONE SIDE ON THE OUTER SIDES OF A CONTINUOUS HALF-SLEEVE SHEET FOR THE MANUFACTURE OF BAGS OR BAGS