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WO2010032613A1 - Procédé pour produire une feuille de résine avec une irrégularité d'épaisseur - Google Patents

Procédé pour produire une feuille de résine avec une irrégularité d'épaisseur Download PDF

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Publication number
WO2010032613A1
WO2010032613A1 PCT/JP2009/065303 JP2009065303W WO2010032613A1 WO 2010032613 A1 WO2010032613 A1 WO 2010032613A1 JP 2009065303 W JP2009065303 W JP 2009065303W WO 2010032613 A1 WO2010032613 A1 WO 2010032613A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
resin sheet
sheet
mold
peeling
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.)
Ceased
Application number
PCT/JP2009/065303
Other languages
English (en)
Japanese (ja)
Inventor
卓弘 林
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.)
Fujifilm Corp
Original Assignee
Fujifilm 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
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Publication of WO2010032613A1 publication Critical patent/WO2010032613A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • 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
    • 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
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9155—Pressure rollers
    • 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
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/387—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a gear pump
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs

Definitions

  • the present invention relates to a method for manufacturing an uneven thickness resin sheet, and more particularly to a method for manufacturing an uneven thickness resin sheet suitable for use in a light guide plate and various optical elements disposed on the back surface of various display devices.
  • the clearance between the mold roller, the nip roller, and the peeling roller differs in the width direction. Therefore, in the present invention, the maximum clearance between the mold roller and the nip roller in the width direction is a, and the clearance between the mold roller and the peeling roller is b.
  • the difference in thickness between the thickest part and the thinnest part of the thickness distribution in the width direction of the resin sheet is 0.5 mm or more and 5 mm or less.
  • the third aspect of the present invention is the above first or second aspect, wherein the thickness distribution in the width direction of the resin sheet has a periodicity of a pitch of 200 mm or more.
  • the thickness distribution in the width direction of the resin sheet can be applied to a resin sheet having a periodicity with a pitch of 200 mm or more. It can be used suitably.
  • the molten resin sheet 14 a extruded from the die 12 is sandwiched between the mold roller 16 and the nip roller 18.
  • the molten resin sheet 14a is cooled and solidified while being formed into a shape having a thickness distribution in the width direction.
  • the solidified resin sheet 14 is peeled off by the peeling roller 20 (peeling step).
  • the resin sheet 14 that has undergone the sheet forming step 114 is then sent to a slow cooling step 116.
  • the slow cooling step (or annealing step) 116 is provided to prevent a rapid temperature change of the resin sheet 14 downstream of the peeling roller 20.
  • a sudden temperature change occurs in the resin sheet 14, for example, the inside of the resin sheet 14 becomes a plastic state despite the fact that the vicinity of the surface of the resin sheet 14 is in an elastic state. The surface shape of the sheet 14 may be deteriorated.
  • the resin sheet 14 is likely to warp.
  • the resin sheet 14 has a change in thickness distribution in the width direction as in the sheet cross-sectional shape of FIG. 3A or FIG. 3B, the temperature distribution in the width direction becomes large and the resin sheet 14 is likely to warp.
  • both edge portions of the resin sheet 14 are less dimensional accuracy than the center portion in the shape. Further, since both the edge portions also have a large residual strain, it is preferable to cut them.
  • the cut portions are preferably 20 to 30 mm at both ends of the resin sheet 14. As shown in FIG. 2, both edge portions of the resin sheet can be cut before cutting the resin sheet in a direction perpendicular to the conveying direction, or after cutting the sheet into a predetermined shape, both ends are cut. May be.
  • the cut sheet resin sheet 14 is conveyed to the next process by a conveyor belt 196 driven by a roller 194.
  • the resin sheet 14 is pressed by the drum-shaped member 192 from the width direction so as not to be displaced during traveling.
  • the sheet-shaped molten resin sheet 14 a extruded from the die 12 is pinched by a mold roller 16 and a nip roller 18 disposed to face the mold roller 16.
  • the resin sheet 14 is formed by transferring an inverted mold having an uneven thickness on the surface of the mold roller 16.
  • the resin sheet 14 is gradually cooled by being wound around a peeling roller 20 disposed opposite to the mold roller 16. And the resin sheet 14 is conveyed in the state from which distortion was removed.
  • the rollers are arranged so that the clearance between the nip roller and the mold roller and the clearance between the mold roller and the peeling roller have a predetermined relationship.
  • Example 4 Under the conditions of Example 4, the maximum clearance (center of the roller) between the nip roller and the mold roller was 3.90 mm, and the maximum clearance between the mold roller and the peeling roller (roller center) was 3.85 mm. Streaks have occurred at both ends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé pour produire une feuille de résine avec une irrégularité d'épaisseur, lequel procédé comprend : une étape d'extrusion (112) au cours de laquelle une résine fondue est extrudée à partir d'une matrice (12) sous forme de feuille ; une étape de formation de feuille (114) au cours de laquelle la feuille de résine fondue extrudée (14a) est prise en sandwich entre un rouleau de matrice (16) et un rouleau pinceur (18) afin de transférer une forme de surface du rouleau de matrice (16) sur la feuille de résine fondue (14a), cette feuille étant refroidie et solidifiée de façon à former une feuille de résine (14) ; une étape d'arrachage (115), au cours de laquelle la feuille de résine (14) est arrachée d'un rouleau de libération (20) ; et une étape de transport (117), au cours de laquelle la feuille de résine (14) est tirée et transportée avec des rouleaux d'enlèvement (24). Si l'espacement maximal dans la direction de la largeur de la feuille de résine entre le rouleau pinceur (18) et le rouleau de matrice (16) est exprimé par a [mm] et que l'espacement maximal dans la direction entre le rouleau de matrice (16) et le rouleau de libération (20) est exprimé par b [mm], alors, a et b satisfont à a ≤ b ≤ a + 0,3.
PCT/JP2009/065303 2008-09-19 2009-09-02 Procédé pour produire une feuille de résine avec une irrégularité d'épaisseur Ceased WO2010032613A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008241181A JP2010069781A (ja) 2008-09-19 2008-09-19 偏肉樹脂シートの製造方法
JP2008-241181 2008-09-19

Publications (1)

Publication Number Publication Date
WO2010032613A1 true WO2010032613A1 (fr) 2010-03-25

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ID=42039446

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/065303 Ceased WO2010032613A1 (fr) 2008-09-19 2009-09-02 Procédé pour produire une feuille de résine avec une irrégularité d'épaisseur

Country Status (2)

Country Link
JP (1) JP2010069781A (fr)
WO (1) WO2010032613A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6917680B2 (ja) * 2016-04-27 2021-08-11 芝浦機械株式会社 光学シート成形装置、光学シート成形方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015435A1 (fr) * 1995-10-24 1997-05-01 Nippon Carbide Kogyo Kabushiki Kaisha Procede de fabrication en continu d'un dispositif optique, ensemble et appareil prevu a cet effet
JP2006056215A (ja) * 2004-08-24 2006-03-02 Fuji Photo Film Co Ltd 樹脂シートの製造方法
JP2009220443A (ja) * 2008-03-17 2009-10-01 Fujifilm Corp 偏肉樹脂シートの製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997015435A1 (fr) * 1995-10-24 1997-05-01 Nippon Carbide Kogyo Kabushiki Kaisha Procede de fabrication en continu d'un dispositif optique, ensemble et appareil prevu a cet effet
JP2006056215A (ja) * 2004-08-24 2006-03-02 Fuji Photo Film Co Ltd 樹脂シートの製造方法
JP2009220443A (ja) * 2008-03-17 2009-10-01 Fujifilm Corp 偏肉樹脂シートの製造方法

Also Published As

Publication number Publication date
JP2010069781A (ja) 2010-04-02

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