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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
FR2317076A2FR7521202AFR7521202AFR2317076A2FR 2317076 A2FR2317076 A2FR 2317076A2FR 7521202 AFR7521202 AFR 7521202AFR 7521202 AFR7521202 AFR 7521202AFR 2317076 A2FR2317076 A2FR 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 FrancefiledCriticalCellophane SA France
Priority to FR7521202ApriorityCriticalpatent/FR2317076A2/en
Priority to IT5018376Aprioritypatent/IT1066270B/en
Priority to DE19767621499prioritypatent/DE7621499U1/en
Publication of FR2317076A2publicationCriticalpatent/FR2317076A2/en
Application grantedgrantedCritical
Publication of FR2317076B2publicationCriticalpatent/FR2317076B2/fr
Grantedlegal-statusCriticalCurrent

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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.
FR7521202A1975-07-071975-07-07Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to archingGrantedFR2317076A2 (en)

Priority Applications (3)

Application NumberPriority DateFiling DateTitle
FR7521202AFR2317076A2 (en)1975-07-071975-07-07Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching
IT5018376AIT1066270B (en)1975-07-071976-06-28 DRY DEVELOPMENT DEVICE FOR REPRODUCTION MACHINES
DE19767621499DE7621499U1 (en)1975-07-071976-07-07 DEVICE FOR STRETCHING PLASTIC FILMS

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
FR7521202AFR2317076A2 (en)1975-07-071975-07-07Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching

Publications (2)

Publication NumberPublication Date
FR2317076A2true FR2317076A2 (en)1977-02-04
FR2317076B2 FR2317076B2 (en)1979-06-15

Family

ID=9157578

Family Applications (1)

Application NumberTitlePriority DateFiling Date
FR7521202AGrantedFR2317076A2 (en)1975-07-071975-07-07Flat drawing plastic films with self-propelling grippers - preventing wastage of film edges due to arching

Country Status (3)

CountryLink
DE (1)DE7621499U1 (en)
FR (1)FR2317076A2 (en)
IT (1)IT1066270B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2527975A1 (en)*1982-06-081983-12-09Dornier Gmbh LindauerTentering device stretches film longitudinally - using clips driven at different speeds by sprocket chains or electric motors
US4736498A (en)*1985-08-171988-04-12Lindauer Dornier Gesellschaft MbhTentering chain guide track for roller-supported tenter clamps
US4853602A (en)*1985-12-241989-08-01E. I. Dupont De Nemours And CompanySystem for using synchronous secondaries of a linear motor to biaxially draw plastic films
US5051225A (en)*1988-06-221991-09-24E. I. Du Pont De Nemours And CompanyMethod of drawing plastic film in a tenter frame
US5072493A (en)*1988-06-221991-12-17E. I. Du Pont De Nemours And CompanyApparatus for drawing plastic film in a tenter frame
WO1996029191A1 (en)*1995-03-211996-09-26Brückner Maschinenbau GmbHTransport device for a continuous moving web of material, in particular a stretching device for plastic film webs
WO1996029190A1 (en)*1995-03-211996-09-26Brückner Maschinenbau GmbHTransport device for a continuous moving sheet, in particular a stretching device for a plastic film sheet
WO2001045920A1 (en)*1999-12-212001-06-283M Innovative Properties CompanyMethod of stretching film and such film
US6965474B2 (en)2003-02-122005-11-153M Innovative Properties CompanyPolymeric optical film

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US7405784B2 (en)2003-02-122008-07-293M Innovative Properties CompanyCompensators for liquid crystal displays with biaxially stretched single film with crystallization modifier
US7132065B2 (en)2003-02-122006-11-073M Innovative Properties CompanyProcess for manufacturing polymeric optical film
DE102014013901A1 (en)2014-09-182016-03-24Brückner Maschinenbau GmbH & Co. KG Linear motor driven simultaneous stretching machine
DE102016218467A1 (en)2016-09-262018-03-29Technische Universität Dresden Holding device and method for holding a flat workpiece

Citations (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2113892A1 (en)*1970-11-121972-06-30Dornier Gmbh LindauerBiaxial film stretching - with loosely turning pressure rollers in direction of guideways

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2113892A1 (en)*1970-11-121972-06-30Dornier Gmbh LindauerBiaxial film stretching - with loosely turning pressure rollers in direction of guideways

Cited By (13)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FR2527975A1 (en)*1982-06-081983-12-09Dornier Gmbh LindauerTentering device stretches film longitudinally - using clips driven at different speeds by sprocket chains or electric motors
US4736498A (en)*1985-08-171988-04-12Lindauer Dornier Gesellschaft MbhTentering chain guide track for roller-supported tenter clamps
US4853602A (en)*1985-12-241989-08-01E. I. Dupont De Nemours And CompanySystem for using synchronous secondaries of a linear motor to biaxially draw plastic films
US5051225A (en)*1988-06-221991-09-24E. I. Du Pont De Nemours And CompanyMethod of drawing plastic film in a tenter frame
US5072493A (en)*1988-06-221991-12-17E. I. Du Pont De Nemours And CompanyApparatus for drawing plastic film in a tenter frame
EP0422035A4 (en)*1988-06-221992-11-04E.I. Du Pont De Nemours And CompanyMethod and apparatus for drawing film
WO1996029191A1 (en)*1995-03-211996-09-26Brückner Maschinenbau GmbHTransport device for a continuous moving web of material, in particular a stretching device for plastic film webs
WO1996029190A1 (en)*1995-03-211996-09-26Brückner Maschinenbau GmbHTransport device for a continuous moving sheet, in particular a stretching device for a plastic film sheet
US5737812A (en)*1995-03-211998-04-14Bruckner Maschinenbau GmbhTransport device for a moving material web
US5749131A (en)*1995-03-211998-05-12Bruckner Maschinenbau GmbhTransport device for a continuous moving sheet, in particular stretching device for a plastic film webs
WO2001045920A1 (en)*1999-12-212001-06-283M Innovative Properties CompanyMethod of stretching film and such film
US7037461B1 (en)1999-12-212006-05-023M Innovative Properties CompanyMethod of stretching film
US6965474B2 (en)2003-02-122005-11-153M Innovative Properties CompanyPolymeric optical film

Also Published As

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

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