WO2002096621A8 - Processes and apparatus for making transversely drawn films with substantially uniaxial orientation - Google Patents

Processes and apparatus for making transversely drawn films with substantially uniaxial orientation

Info

Publication number
WO2002096621A8
WO2002096621A8 PCT/US2002/017148 US0217148W WO02096621A8 WO 2002096621 A8 WO2002096621 A8 WO 2002096621A8 US 0217148 W US0217148 W US 0217148W WO 02096621 A8 WO02096621 A8 WO 02096621A8
Authority
WO
WIPO (PCT)
Prior art keywords
film
stretching
tddr
processes
draw ratio
Prior art date
Application number
PCT/US2002/017148
Other languages
French (fr)
Other versions
WO2002096621A2 (en
Inventor
William Ward Merrill
Jeffery N Jackson
Andrew T Ruff
John A Wheatley
Dennis L Krueger
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to AT02737292T priority Critical patent/ATE530329T1/en
Priority to JP2002593121A priority patent/JP2005501757A/en
Priority to EP02737292A priority patent/EP1526961B1/en
Priority to KR1020037015523A priority patent/KR100866176B1/en
Priority to AU2002310230A priority patent/AU2002310230A1/en
Publication of WO2002096621A2 publication Critical patent/WO2002096621A2/en
Publication of WO2002096621A8 publication Critical patent/WO2002096621A8/en

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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
    • 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
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • 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
    • 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
    • B29C69/001—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 a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/003—PET, i.e. poylethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • B29K2995/0051—Oriented mono-axially
    • 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/041—Reshape

Abstract

The present invention relates to a method of processing a film, the method comprising conveying a film (40) within a stretcher (30') along a machine direction while holding opposing edge portions of the film, and stretching the film to a draw ratio in excess of four within the stretcher by moving the opposing edge portions along diverging, non-linear, coplanar paths (64) to form a stretched film, wherein, during the stretching of the film, the minimum value of the extent of uniaxial character, U, is at least 0.8 over a final portion of the stretching after achieving a TDDR of 2.5 and U is less than 1 at the end of the stretching, wherein U is defined as U = (1/MDDR - 1) / (TDDR 1/2 - 1) wherein MDDR is the machine direction draw ratio corresponding to a divergence angle of the diverging paths and TDDR is the transverse direction draw ratio as measured between the diverging paths.
PCT/US2002/017148 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial orientation WO2002096621A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT02737292T ATE530329T1 (en) 2001-05-31 2002-05-29 METHOD FOR PRODUCING TRANSVERSELY STRETCHED FILMS WITH A SIGNIFICANT UNIAXIAL ORIENTATION
JP2002593121A JP2005501757A (en) 2001-05-31 2002-05-29 Process and apparatus for producing transversely oriented films having substantially uniaxiality
EP02737292A EP1526961B1 (en) 2001-05-31 2002-05-29 Process for making transversely drawn films with substantially uniaxial orientation
KR1020037015523A KR100866176B1 (en) 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial character
AU2002310230A AU2002310230A1 (en) 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial orientation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29494001P 2001-05-31 2001-05-31
US60/294,940 2001-05-31

Publications (2)

Publication Number Publication Date
WO2002096621A2 WO2002096621A2 (en) 2002-12-05
WO2002096621A8 true WO2002096621A8 (en) 2005-03-03

Family

ID=23135569

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2002/016948 WO2002096622A1 (en) 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial orientation
PCT/US2002/017148 WO2002096621A2 (en) 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial orientation

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2002/016948 WO2002096622A1 (en) 2001-05-31 2002-05-29 Processes and apparatus for making transversely drawn films with substantially uniaxial orientation

Country Status (9)

Country Link
US (6) US6939499B2 (en)
EP (4) EP1390193B1 (en)
JP (5) JP2005501757A (en)
KR (1) KR100866176B1 (en)
CN (1) CN100374282C (en)
AT (1) ATE530329T1 (en)
AU (1) AU2002310230A1 (en)
TW (2) TW575494B (en)
WO (2) WO2002096622A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9134471B2 (en) 2006-06-28 2015-09-15 3M Innovative Properties Company Oriented polymeric articles and method

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