WO2007088721A1 - Easy-adhesion film for optical sheet and method for manufacturing the same - Google Patents

Easy-adhesion film for optical sheet and method for manufacturing the same Download PDF

Info

Publication number
WO2007088721A1
WO2007088721A1 PCT/JP2007/050475 JP2007050475W WO2007088721A1 WO 2007088721 A1 WO2007088721 A1 WO 2007088721A1 JP 2007050475 W JP2007050475 W JP 2007050475W WO 2007088721 A1 WO2007088721 A1 WO 2007088721A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
support
film
easily adhesive
adhesion
Prior art date
Application number
PCT/JP2007/050475
Other languages
French (fr)
Japanese (ja)
Inventor
Sumio Nishikawa
Aya Kuwata
Original Assignee
Fujifilm Corporation
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 Corporation filed Critical Fujifilm Corporation
Publication of WO2007088721A1 publication Critical patent/WO2007088721A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers

Definitions

  • Adhesive film for optical sheet and method for producing the same are Adhesive film for optical sheet and method for producing the same
  • the present invention relates to an easily adhesive film for an optical sheet, and a method for producing the same, and more particularly to an easily adhesive film for an optical sheet which can prevent blocking after application of an easily adhesive layer, and a method for producing the same.
  • Polyester resin films in particular, biaxially stretched films of polyethylene terephthalate (PET) have excellent mechanical properties, flame resistance, chemical resistance, etc., so magnetic tapes, photographic films, packaging films, Demand for the use of OHP films and antireflective films for OCR devices widely used in recent years has grown significantly in recent years.
  • PET polyethylene terephthalate
  • the polyester resin-based film is required to have adhesiveness.
  • the adhesion to a printing ink or a laminate material in the case of a photographic film, the adhesion to a photosensitive layer formed on a substrate film, as in the case of a magnetic tape
  • polyester films have a problem in that they have poor adhesion to various materials having high surface cohesion because of crystal orientation.
  • corona treatment, plasma treatment, flame treatment and the like are known as means for improving the surface properties of polyester films, and some of them are used.
  • these means are intended to improve the adhesion by physically changing the shape of the film surface, and the performance thereof decreases with time, and the transparency is also reduced.
  • Another method for overcoming the above-mentioned drawbacks is a method of applying a coating on a film and providing an easy adhesion layer.
  • the easy-adhesion layer organic solvent-based ones and water-based ones are used.
  • water-based ones are preferable from the viewpoint of safety problems such as environmental damage caused by volatilization, and problems of hygiene and resource saving.
  • this easy-to-adhere layer For example, it has been proposed to form using a water-soluble or water-dispersible polyester resin.
  • the above-mentioned easy-adhesion layer has good adhesion to the polyester film, but it has low affinity with the coating agent, adhesive, ink, etc. to be laminated, and vice versa.
  • the adhesion to these layers is improved, the adhesion to polyester films is lowered, and it is difficult to select one having sufficient adhesion as an intermediate layer.
  • the films are blocked due to changes in temperature and humidity during storage, and uniform application of surface agents such as diazo paint and UV ink is difficult, which causes various problems.
  • Patent Document 1 discloses a polyester film having an easy-adhesion layer formed by crosslinking an acrylic resin and an allally modified polyester resin.
  • Patent Document 2 discloses a polyester film having a layer containing styrene-butadiene butadiene resin or attril-o-tri-butadiene butadiene resin and a specific polyester resin.
  • Patent Document 3 and Patent Document 4 propose that the adhesiveness and releasability of the acrylic resin be improved.
  • Patent Document 3 forms a transparent primer having a functional group having a photopolymerizable unsaturated group in an acrylic polymer in the range of 0.1 to 40% by weight on both sides of a substrate. To be disclosed.
  • Patent Document 4 relates to the 2P method in which the resin layer has a two-layer structure, and the reaction of the first resin layer on the mold side is the releasability of the cured product; An arrangement is disclosed that is taller than the object.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 1-108037
  • Patent Document 2 Japanese Patent Publication No. 3-22899
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2002-365405
  • Patent Document 4 Japanese Patent Application Laid-Open No. 2004-249655
  • the easily adhesive film produced by the above-mentioned conventional method is used as a support while And adhesion to the optical functional layer is insufficient.
  • the optical functional layer is a prism layer made of a UV curing resin, there is a problem that the adhesion between the prism layer and the support tends to be insufficient.
  • the adhesive force between the support and the prism layer referred to herein means that when peeling off the mold force prism layer at the time of production, the support peels off the prism layer force and the UV curable resin is not left on the mold side. Or adhesion to prevent the UV-curable resin from falling off from the support when the prism sheet is cut out, and adhesion to last under the conditions of use of the liquid crystal panel material, etc. .
  • a butadiene-styrene copolymer latex layer or an aqueous system containing a crosslinking agent on at least one side as an easy-adhesion layer on the surface of the film made of polyester resin as a support is used. It has been found that forming a urethane resin layer is effective.
  • the present invention has been made in view of these circumstances, and it is a production process (coating, transfer, transport) and handling (transport, cutting, and the like) for forming an optical functional layer in the production of an optical functional film.
  • a production process coating, transfer, transport
  • handling transport, cutting, and the like
  • an easy adhesion layer coated on the surface of a support contains a water-based urethane resin and a carbodiimide-based crosslinking agent, and the back surface of the support
  • an easily adhesive film for an optical sheet wherein the uppermost layer of the formed back layer is a polyolefin layer.
  • the easy adhesion layer coated on the surface of the support is a water-based urethane resin and an epoxy resin.
  • the present invention provides an easily adhesive film for an optical sheet, comprising a crosslinker, wherein the uppermost layer of the back layer formed on the back surface of the support is a polyurethane layer.
  • the easy adhesion layer coated on the surface of the support contains a styrene butadiene copolymer, and a dichloro-s trialine derivative or a carbodiimide-based crosslinking agent, and the back surface of the support is obtained.
  • an easily adhesive film for an optical sheet wherein the uppermost layer of the formed back layer is a polyolefin layer.
  • a styrene-butadiene copolymer latex layer containing a crosslinking agent or a water-based urethane resin layer is coated as an easy-adhesion layer on the surface (surface) of the support on which the optical function layer is formed,
  • a polyolefin layer is formed on the top of the back of the body (opposite to the side on which the easy-adhesion layer is applied).
  • the easily adhesive film is delivered as an optical functional layer on the surface of the easily adhesive layer of the easily adhesive film obtained, for example, in a manufacturing process for forming an acrylic ultraviolet curable resin layer.
  • blocking can be carried out well.
  • the prism sheet obtained in the present invention has excellent adhesion and is free from blocking, so it is also excellent in transparency and can be stably manufactured.
  • Patent Document 3 is different from the present invention in the formulation of the primer layer (photo-curing type), and the symmetry is also a lenticular lens, and further, the knock layer is not mentioned, and the difference from the present invention Do.
  • Patent Document 4 is similar to the present invention in that an adhesive layer is provided between the transfer layer and the support, but in Patent Document 4, an adhesive layer is provided during the transfer step. This is different from the present invention in which the adhesive layer is applied before the transfer process. Furthermore, Patent Document 4 mentions a back layer which is a feature of the present invention.
  • the support is a polyester film
  • the back layer is a first layer containing an allyl latex and tin oxide, and a polyolefin layer formed on the first layer. It is preferable to have a certain second layer.
  • the support is a polyester film, and the back layer contains a first layer containing a conductive polymer; It is preferable to have a second layer which is a polyolefin layer formed on the first layer. With such a back layer, the effects of the present invention can be further obtained.
  • the support is preferably polyethylene terephthalate.
  • polyester films other than polyethylene terephthalate can also be used as the support, the effects of the present invention can be suitably obtained with polyethylene terephthalate.
  • an optical functional layer is formed on the easily adhesive layer, and the optical functional layer is a prism layer made of an ultraviolet curing resin.
  • the step of applying an easily bonding layer on the surface of a support the step of applying a back layer whose top layer is a polyolefin layer on the back side of the support, and the easily bonding layer And drying the backing on which the backing layer is applied, winding the backing after drying, and forming an optically functional layer on the easily adhesive layer of the wound backing.
  • FIG. 1 is a table showing the weight ratio of compounds constituting the resin solution used in the examples.
  • FIG. 2 A conceptual diagram showing the configuration of a device for manufacturing an embossed sheet
  • FIG. 3 A diagram showing an outline of a cross section along the axial direction of the rotation axis of the embossing roller
  • FIG. 4 A table showing the results of the haze, the tape peeling test, and the blocking test of embossed sheets prepared based on Examples 1 to 5 and Comparative Examples 1 to 6.
  • polyester-based resin examples include linear saturated polyesters synthesized from an aromatic dibasic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof.
  • polyethylene terephthalate, polyethylene naphthalate and the like are preferable from the viewpoint of easy availability, economy and effect.
  • these copolymers or a blend of these with a small amount of other fats may be used as long as the effects of the present invention are not impaired.
  • inorganic or organic fine particles for example, titanium oxide, calcium carbonate, silica, barium sulfate, inorganic fillers such as silicone, acrylic, etc.
  • inorganic fillers such as silicone, acrylic, etc.
  • An organic filler such as benzoguanamine, Teflon (registered trademark) or epoxy, an adhesion improver such as polyethylene glycol (PEG) or sodium dodecylbenzene sulfonate, or an antistatic agent can be contained.
  • the polyester film of the present invention can be formed by melt extrusion of a polyester resin as described above to form a film, orientation crystallization by longitudinal and transverse biaxial stretching, and crystallization by heat treatment.
  • known methods and conditions can be appropriately selected and used.
  • the thickness of the polyester film used herein is not particularly limited, and can be appropriately selected according to the purpose of use of the film. Generally, it is preferable to use as 5-500 / ⁇
  • the easily bonding layer used in the present invention is characterized by containing a styrene-butadiene copolymer (hereinafter, appropriately abbreviated as “SBR”) or a water-based urethane resin and a crosslinking agent.
  • SBR is a copolymer based on styrene and butadiene, and further means one obtained by copolymerizing other components as necessary. It is known that this copolymer can be obtained with various physical properties by adjusting the content ratio of styrene and butadiene.
  • the styrene-butadiene copolymer is a latex. It is preferable that Specifically, from Nippon Zeon Co., Ltd.-as Paul (trade name), from Sumitoga Inc. as Nogatex (trade name), from Takeda Pharmaceutical Co., Ltd. as Cross Ren (trade name), Asahi Dow Latex (from Asahi Dow Co., Ltd.) Alternatively, commercial products sold by Dainippon Ink Chemical Co., Ltd. or overseas manufacturers may be used as trade names).
  • the particle size of the dispersion particles is preferably not more than 5 ⁇ m, more preferably not more than 1 ⁇ m, and still more preferably not more than 0.2 m.
  • the particle diameter is large, there is a problem that aggregation of particles tends to occur in the coating step, or the transparency, gloss and the like of the film become poor.
  • it is necessary to reduce the thickness of the coating layer it is necessary to reduce the particle size accordingly.
  • the content ratio of styrene Z butadiene in the styrene butadiene copolymer of the easy adhesion layer is preferably about 50/50 to 80/20.
  • the proportion of SBR contained in the latex is preferably 30 to 50% by weight as solid weight.
  • crosslinking agent is added to the easily bonding layer in order to improve the physical properties of SBR
  • a triazine-based crosslinking agent is preferable as the crosslinking agent used here.
  • a coating solution containing a styrene-butadiene copolymer and a crosslinking agent is coated on a polyester-based resin film substrate and then dried at high temperature to form an easily adhesive layer. It is preferable to form.
  • a self-water-soluble or self-dispersed one having a hydrophilic group or a hydrophilic segment added to the urethane resin and having a water-soluble or self-dispersible type preferably contains a silanol group in the side chain.
  • An emulsion type is also used. Specifically, Superflex (trade name) manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd. or Takelac (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. can be used.
  • the force to which a crosslinking agent is added to improve the physical properties of the urethane resin is an epoxy having an average number of epoxy functional groups of preferably 3.5 or more.
  • Crosslinkers or carpodiimide crosslinkers are preferred.
  • a polyolefin layer is excellent as a back layer coated on the back side. If it is a polyolefin, appropriate adhesion with a support such as a polyester film can be obtained, and blocking with the easily adhesive layer which is coated on the opposite surface (surface) can be prevented. In addition, it is preferable to apply a conductive layer or a conductive polymer layer composed of an acrylic latex and tin oxide to the knock layer. This makes it possible to prevent dust from being attached due to charging.
  • a polyolefin layer is coated on the back surface of a polyolefin single layer or a conductive layer consisting of an acrylic latex and an acrylic latex, or a conductive polymer layer, dried and wound up.
  • polyolefin a polyolefin aqueous dispersion manufactured by Mitsui Chemicals, or an ethylene-based copolymer emulsion manufactured by Toho Chemical Co., Ltd. can be used.
  • the time of applying the coating solution for easy adhesion layer and the polyolefin coating solution to the polyester film is before biaxial stretching, after biaxial stretching, or immediately before applying a surface layer material.
  • a coating agent is applied to a uniaxially stretched polyester film by a roll stretching method as exemplified in Japanese Patent Publication No. 41-8470 and the like, and the film is appropriately dried or not dried immediately or at right angles to the previous stretching direction. It is also possible to apply a method of stretching in the direction and heat treatment (hereinafter referred to as coating and stretching method)
  • the coating layer can be dried simultaneously with the drawing, and the coating layer can be drawn to thin the coating thickness, and it is difficult by methods other than the coating and drawing method.
  • a wide laminated film which was
  • the thickness of the easily adhesive layer on the polyester film and the thickness of the polyolefin layer formed on the back surface of the easily adhesive layer is preferably in the range of 0.50 to 0.5 / z m. If the thickness of the coated layer is less than 005 m, it is difficult to apply uniformly, so that the product tends to have uneven coating, or the adhesion to the laminated prism layer is insufficient. On the other hand, when the thickness of the coating layer is more than 0, the films may be easily fixed to each other or the light transmittance of the entire film may be reduced.
  • a sticking improver if necessary, a coatability improver, an antifoamer, an ultraviolet ray absorber, an antioxidant, an antistatic agent, a lubricant, inorganic fine particles, a dye , And pigments May be contained.
  • a conductive layer comprising an acrylic latex and tin oxide or a conductive polymer layer such as polythiophen or polyarrine as an antistatic layer in the lower layer.
  • the easily adhesive film of the present invention is configured by forming a polyolefin layer on the above-mentioned easily adhesive layer on the one surface of the polyester film substrate and the uppermost layer on the back surface thereof.
  • PET film After stretching the polyethylene terephthalate (PET) film 3. 3 times in each of the longitudinal direction and the transverse direction after biaxial stretching, the PET film is heat-set at 240 ° C. for 20 seconds, and then transverse direction at the same temperature. Relaxed about 4%. After that, the chuck portion of the tenter was slitted, knurled at both ends, and wound up. In this way, a roll-like support of substrate 36 having a thickness of 180 m was obtained.
  • PET polyethylene terephthalate
  • the processing frequency at this time was 9.6 kHz, and the gap alignment between the electrode and the dielectric roller was 1.6 mm.
  • a coating solution of the following composition was applied onto one side of the film substrate by 6 ml Zm2 and dried at 185 ° C. for 5 minutes to form an easily adhering layer having a thickness of 0.15 m.
  • a coating solution for an antistatic layer having the following composition is coated on the back surface of the support (the surface on which the easy adhesion layer is not provided) with a bar coater and dried at 185 ° C. for 5 minutes. A 15 ⁇ m antistatic layer was formed.
  • Tin dioxide-antimony composite metal acid aqueous dispersion 9. 1 part by weight
  • an aqueous dispersion of polyolefin latex having the following composition was applied so as to have a dry film thickness of 0.88 / z m. It was dried at 140 ° C. for 3 minutes.
  • Distilled water was added to the above mixture to prepare a total of 100 parts by weight.
  • ⁇ ] 3700 Ebecryl 3700, manufactured by Daicel UC Co., Ltd.,
  • BPE200 NK Ester BPE—200, Shin-Nakamura Chemical Co., Ltd.,
  • LR8893X Lucirin LR8893X, a photoradical generator manufactured by BASF Co., Ltd.
  • a prism layer was formed on a support using the embossed sheet manufacturing apparatus 10 configured as shown in FIG.
  • the support (sheet) W a support having a width of 500 mm was used.
  • a groove with a pitch of 50 m in the axial direction of the roller was formed on the entire surface of the roller approximately 500 mm wide by cutting using a diamond bit (single point).
  • the cross-sectional shape of the groove is a triangular shape with an apex angle of 90 degrees, and the bottom of the groove is also a triangular shape of 90 degrees without a flat portion. That is, the groove width is 50 m and the groove depth is about 25 m. Since this groove is endless without seams in the circumferential direction of the roller, a prism lens can be formed on the sheet W by the emboss roller 13. The surface of the roller was plated with nickel after grooved. A schematic cross-sectional view of the embossing roller 13 is shown in FIG.
  • a die coater using an ejection type coating head 12C was used.
  • a coating solution F resin solution
  • the solution described in the above-mentioned table was used.
  • the thickness of the coating liquid F (resin) in the wet state is controlled by the supply device 12 B to supply the amount of each coating liquid F to the coating head 12 C so that the film thickness after drying of the organic solvent is obtained. did.
  • a hot air circulating drier was used as the drying means 19.
  • the temperature of the hot air was 100 ° C.
  • the prism sheet W was pressed by the emboss roller 13 and the roller roller 14.
  • the pressure (effective pressure) of the prism sheet W was set to 0.5 Pa.
  • a metal halide lamp was used as the resin curing means 15, and irradiation was performed at an energy of 1000 mj Z cm 2.
  • optical film (prism sheet) was obtained in the same manner as in Example 1 except that the coating solution for the easy adhesion layer had the following composition.
  • Emarex 710 (Nippon Emulsion Co., Ltd. polyoxyethylene alkyl ether) 1%: 0.7 ml
  • a coating solution of the following composition was coated on one side of a support by 6 ml Zm 2 and dried at 100 ° C. for 5 minutes to form an easy-adhesion layer having a thickness of 0.15 m in the same manner as in Example 1.
  • a film (prism sheet) was obtained.
  • a coating solution of the following composition was coated on one side of a support by 6 ml Zm 2 and dried at 130 ° C. for 5 minutes to form a 0.15 m thick easy-adhesion layer in the same manner as in Example 1.
  • An optical film (prism sheet) was obtained.
  • An optical film (prism sheet) was obtained in the same manner as in Example 1 except that the coating liquid for the first conductive layer of the knock layer had the following composition.
  • Acrylic resin water dispersion 1. 9 parts by weight (Dilyulmer ET410, solid content 30% by weight, manufactured by Nippon Junyaku Co., Ltd.)
  • An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 1 except that only one layer of the back layer on the back surface was coated and no layer of the back 2 layer was coated in Example 1.
  • An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 2 except that the back layer on the back surface was coated with only one knock layer and the back two layers were not coated in Example 2.
  • An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 4 except that the back layer on the back surface was coated with only one knock layer and the back two layers were not coated in Example 4.
  • An easily adhesive film before application of the optical functional layer was obtained in the same manner as in Example 5 except that only one layer of the back layer on the back surface was coated and no layer of the back 2 layer was coated in Example 5.
  • cellophane tape (Cellotape (registered trademark): manufactured by Nichiban Co., Ltd.) was attached to the entire surface of the subject, and a peeling test was performed to peel off the cellophane tape. This peeling test was repeated three times in each of the prism ridge direction and the prism parallel direction. Then, the number of cut pieces of the prism layer attached to cellophane tape and peeled off was measured.
  • the easy-adhesion film before being coated with the optically functional layer is left in an atmosphere of 23 ⁇ 3 ° C, 50 ⁇ 5% RH for 3 hours, and then the easy-adhesion film is cut into a size of 35 mm x 35 mm. Then, 5 pairs of 2 sheets were piled up, and under the same atmosphere, the time under a load of 84 kg was tested at the level of both 24 hours and 72 hours.
  • a to D were set according to the blocking force of several frames in a total of 100 frames, taking 3.5 mm x 3.5 mm as one frame. If the blocking is less than 0.5, rank A, rank B less than 0.5 to 10, rank C less than 10 to 50%, and rank D less than 50%.
  • Rank A can be used, but Rank B suffers from the restriction of winding conditions and storage conditions. And rank C and rank D are difficult to use. From the table of FIG. 4, the evaluation results of the evaluation (the haze) of the easily adhesive film, the evaluation of the adhesiveness of the product (tape peeling test) and the blocking test of the easily adhesive film are compared.
  • Comparative Example 6 was as low as 1.5%, the corresponding Examples and Comparative Examples had no significant difference.
  • the comparative example is B, C or D under any conditions and is clearly inferior.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

This invention provides a method for manufacturing an easy-adhesion film for an optical sheet, which can prevent blocking after coating of an easy-adhesion layer in a process (coating, transfer, and carrying) for forming an optical functional layer in the manufacture of an optical functional film, or a process for manufacturing an easy-adhesion support, which does not cause layer separation in handling (for example, transport, cutting, or lamination) and has excellent adhesion even in a high-temperature and high-humidity atmosphere, and a method for manufacturing the easy-adhesion film. In this method, an easy-adhesion layer coated onto the surface of a web (W) as a support contains an aqueous urethane resin and a crosslinking agent or contains a styrene-butadiene copolymer and a crosslinking agent, and the upper most layer in a back layer formed on the backside of the web (W) is a polyolefin layer.

Description

明 細 書  Specification
光学シート用易接着性フィルム、及びその製造方法  Adhesive film for optical sheet and method for producing the same
技術分野  Technical field
[0001] 本発明は、光学シート用易接着性フィルム、及びその製造方法に係り、特に、易接 着層塗設後におけるブロッキングを防止できる光学シート用易接着性フィルム、及び その製造方法に関する。  The present invention relates to an easily adhesive film for an optical sheet, and a method for producing the same, and more particularly to an easily adhesive film for an optical sheet which can prevent blocking after application of an easily adhesive layer, and a method for producing the same.
背景技術  Background art
[0002] ポリエステル榭脂系フィルム、特に、ポリエチレンテレフタレート（PET)の二軸延伸 フィルムは、優れた機械的性質、耐燃性及び耐薬品性等を有するため、磁気テープ 、写真フィルム、包装用フィルム、 OHPフィルム、及び近年汎用されている OCR機器 用の反射防止フィルム等の基材として、近年その需要の伸びは著しい。  [0002] Polyester resin films, in particular, biaxially stretched films of polyethylene terephthalate (PET) have excellent mechanical properties, flame resistance, chemical resistance, etc., so magnetic tapes, photographic films, packaging films, Demand for the use of OHP films and antireflective films for OCR devices widely used in recent years has grown significantly in recent years.
[0003] これらの用途において、このポリエステル榭脂系フィルムには接着性が要求される。  In these applications, the polyester resin-based film is required to have adhesiveness.
たとえば、包装用フィルムでは、印刷用インクやラミネート材との接着性が、写真フィ ルムでは基材フィルム上に形成される感光層との接着性力 同様に磁気テープでは 磁気記録層との接着性が、更に、 OCR機器用の紫外線防止フィルムでは紫外線吸 収塗料との接着性が、それぞれ良好であることが望まれる。ところが、ポリエステルフ イルムは結晶配向性のため、表面凝集性が高ぐ各種材料に対する接着性に乏しい という問題点がある。  For example, in the case of a packaging film, the adhesion to a printing ink or a laminate material, in the case of a photographic film, the adhesion to a photosensitive layer formed on a substrate film, as in the case of a magnetic tape However, in the case of an ultraviolet protection film for an OCR device, it is desirable that the adhesion to the ultraviolet absorbing coating be good. However, polyester films have a problem in that they have poor adhesion to various materials having high surface cohesion because of crystal orientation.
[0004] これに対し、ポリエステルフィルムの表面性を改善する手段として、コロナ処理、プラ ズマ処理、及び火炎処理等が知られており、一部において用いられている。ところが 、これらの手段は、フィルム表面の形状を物理的に変化させて接着性の向上を図るも のであり、経時によりその性能が低下し、また、透明性も低下させるという欠点がある  On the other hand, corona treatment, plasma treatment, flame treatment and the like are known as means for improving the surface properties of polyester films, and some of them are used. However, these means are intended to improve the adhesion by physically changing the shape of the film surface, and the performance thereof decreases with time, and the transparency is also reduced.
[0005] 上記の欠点を克服する他の方法として、フィルム上に塗剤を塗布し、易接着層を設 ける方法が挙げられる。この易接着層としては、有機溶剤系のものと水系のものが用 いられている。このうち、揮散による環境悪ィ匕等の安全上の問題、衛生上及び省資 源等の問題より、水系のものが好適である。そして、この易接着層を水系塗剤、たとえ ば、水溶性又は水分散性のポリエステル榭脂を用いて形成することが提案されて ヽ る。 Another method for overcoming the above-mentioned drawbacks is a method of applying a coating on a film and providing an easy adhesion layer. As the easy-adhesion layer, organic solvent-based ones and water-based ones are used. Among these, water-based ones are preferable from the viewpoint of safety problems such as environmental damage caused by volatilization, and problems of hygiene and resource saving. And this easy-to-adhere layer For example, it has been proposed to form using a water-soluble or water-dispersible polyester resin.
[0006] ところが、上記易接着層は、物性によってはポリエステルフィルムとの接着性が良好 であるが、積層される塗布剤、接着剤、インクなどとの親和性が低カゝつたり、反対に、 それらの層との接着性を改良すると、ポリエステルフィルムとの接着性が低下するなど の問題点があり、中間層としての充分な接着性を有するものを選択することは困難で あった。更に、保管中の温度や湿度の変化によってフィルム同士がブロッキングした り、またジァゾ塗料や UVインキ等の表層剤の均一塗布が困難であったりし、各種の 問題点を有していた。  However, depending on the physical properties, the above-mentioned easy-adhesion layer has good adhesion to the polyester film, but it has low affinity with the coating agent, adhesive, ink, etc. to be laminated, and vice versa. However, when the adhesion to these layers is improved, the adhesion to polyester films is lowered, and it is difficult to select one having sufficient adhesion as an intermediate layer. Furthermore, the films are blocked due to changes in temperature and humidity during storage, and uniform application of surface agents such as diazo paint and UV ink is difficult, which causes various problems.
[0007] この問題点を解決するために、たとえば、特許文献 1には、アクリル系榭脂とアタリ ル変性ポリエステル榭脂とを架橋してなる易接着層を有するポリエステルフィルムが 開示されている。また、特許文献 2には、スチレン一ブタジエン榭脂又はアタリ口-トリ ルーブタジエン榭脂と特定のポリエステル榭脂とを含有する層を有するポリエステル フィルムが開示されて 、る。  In order to solve this problem, for example, Patent Document 1 discloses a polyester film having an easy-adhesion layer formed by crosslinking an acrylic resin and an allally modified polyester resin. Also, Patent Document 2 discloses a polyester film having a layer containing styrene-butadiene butadiene resin or attril-o-tri-butadiene butadiene resin and a specific polyester resin.
[0008] 更に、特許文献 3及び特許文献 4には、アクリル系榭脂の接着性と剥離性を良好に する提案がなされている。このうち、特許文献 3には、基材の両面にアクリル系重合体 力 分子内に光重合性不飽和基をもつ官能基を 0. 1〜40重量％の範囲で有する透 明なプライマーを形成する旨が開示されている。  Further, Patent Document 3 and Patent Document 4 propose that the adhesiveness and releasability of the acrylic resin be improved. Among these, Patent Document 3 forms a transparent primer having a functional group having a photopolymerizable unsaturated group in an acrylic polymer in the range of 0.1 to 40% by weight on both sides of a substrate. To be disclosed.
[0009] 特許文献 4には、 2P法において榭脂層を 2層構成とし、型側の第 1榭脂層の反応 硬化物の剥離性を、基材側の第 2の榭脂の反応硬化物よりも高くする構成が開示さ れている。  [0009] Patent Document 4 relates to the 2P method in which the resin layer has a two-layer structure, and the reaction of the first resin layer on the mold side is the releasability of the cured product; An arrangement is disclosed that is taller than the object.
特許文献 1：特開平 1― 108037号公報  Patent Document 1: Japanese Patent Application Laid-Open No. 1-108037
特許文献 2：特公平 3 - 22899号公報  Patent Document 2: Japanese Patent Publication No. 3-22899
特許文献 3：特開 2002 - 365405号公報  Patent Document 3: Japanese Patent Application Laid-Open No. 2002-365405
特許文献 4：特開 2004— 249655号公報  Patent Document 4: Japanese Patent Application Laid-Open No. 2004-249655
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problem that invention tries to solve
[0010] し力しながら、上記従来の方法で作製した易接着フィルムを支持体とした場合には 、光学機能層との接着力が不十分である。たとえば、光学機能層が UV硬化榭脂か らなるプリズム層の場合には、プリズム層と支持体の接着力が不十分となりやすいと いう問題があった。 When the easily adhesive film produced by the above-mentioned conventional method is used as a support while And adhesion to the optical functional layer is insufficient. For example, when the optical functional layer is a prism layer made of a UV curing resin, there is a problem that the adhesion between the prism layer and the support tends to be insufficient.
[0011] なお、ここで言う支持体とプリズム層との接着力とは、製造時に型力 プリズム層を 剥離する際に、支持体がプリズム層力 剥がれて UV硬化樹脂が型側に残らないた めの接着力、又は、プリズムシートの切り抜き加工の際、 UV硬化樹脂が支持体から 粉落ちしないための接着力、更には、液晶パネル材料の使用条件下でも持続する接 着力、等を意味する。  [0011] The adhesive force between the support and the prism layer referred to herein means that when peeling off the mold force prism layer at the time of production, the support peels off the prism layer force and the UV curable resin is not left on the mold side. Or adhesion to prevent the UV-curable resin from falling off from the support when the prism sheet is cut out, and adhesion to last under the conditions of use of the liquid crystal panel material, etc. .
[0012] 上記課題を解決するためには、支持体となるポリエステル榭脂製フィルムのプリズム 層形成面に、易接着層として少なくとも片面に架橋剤を含有するブタジエンースチレ ン共重合ラテックス層又は水系ウレタン榭脂層を形成することが有効であることが見 出されている。  In order to solve the above problems, a butadiene-styrene copolymer latex layer or an aqueous system containing a crosslinking agent on at least one side as an easy-adhesion layer on the surface of the film made of polyester resin as a support is used. It has been found that forming a urethane resin layer is effective.
[0013] ところが、これらのプリズム層との接着が良好な易接着層は、製造工程においてブ ロッキングを発生させやす 、と 、う欠点を持って 、る。すなわちプライマー層としてフ イルムに塗設し、巻き取る工程を経た後に、ブロッキングを発生し、光学シートとして 使用不可能な状態になってしまうという問題があった。  However, easy-adhesion layers having good adhesion to these prism layers have a drawback that they are prone to blocking in the manufacturing process. That is, there is a problem that blocking occurs after being applied to a film as a primer layer and wound up, and the optical sheet becomes unusable.
[0014] 本発明は、このような事情に鑑みてなされたもので、光学機能フィルムの製造にお ける光学機能層を形成する製造工程 (塗布、転写、搬送)や取扱時 (輸送、切断、張 り合せ時等）に層の剥離がなぐ高温高湿雰囲気下においても優れた接着性を有す る易接着支持体の製造工程において、易接着層塗設後におけるブロッキングを防止 する光学シート用易接着性フィルム、及びその製造方法を提供することを目的とする 課題を解決するための手段  The present invention has been made in view of these circumstances, and it is a production process (coating, transfer, transport) and handling (transport, cutting, and the like) for forming an optical functional layer in the production of an optical functional film. For optical sheets that prevent blocking after application of the easy-adhesion layer in the production process of an easy-adhesion support having excellent adhesion even under high-temperature, high-humidity atmosphere where layer peeling does not occur during lamination etc.) Adhesive film, and method for producing the same
[0015] 前記課題を解決するために、本発明は、支持体の表面に塗設された易接着層が水 系ウレタン榭脂とカルポジイミド系架橋剤を含有してなり、前記支持体の裏面に形成 されたバック層の最上層がポリオレフイン層であることを特徴とする光学シート用易接 着性フィルムを提供する。 [0015] In order to solve the above problems, according to the present invention, an easy adhesion layer coated on the surface of a support contains a water-based urethane resin and a carbodiimide-based crosslinking agent, and the back surface of the support There is provided an easily adhesive film for an optical sheet, wherein the uppermost layer of the formed back layer is a polyolefin layer.
[0016] また、本発明は、支持体の表面に塗設された易接着層が水系ウレタン榭脂とェポキ シ架橋剤を含有してなり、前記支持体の裏面に形成されたバック層の最上層がポリ ォレフィン層であることを特徴とする光学シート用易接着性フィルムを提供する。 Further, in the present invention, the easy adhesion layer coated on the surface of the support is a water-based urethane resin and an epoxy resin. The present invention provides an easily adhesive film for an optical sheet, comprising a crosslinker, wherein the uppermost layer of the back layer formed on the back surface of the support is a polyurethane layer.
[0017] また、本発明は、支持体の表面に塗設された易接着層がスチレン ブタジエン共 重合体、及びジクロロー s トリアリン誘導体又はカルポジイミド系架橋剤を含有して なり、前記支持体の裏面に形成されたバック層の最上層がポリオレフイン層であること を特徴とする光学シート用易接着性フィルムを提供する。  Further, in the present invention, the easy adhesion layer coated on the surface of the support contains a styrene butadiene copolymer, and a dichloro-s trialine derivative or a carbodiimide-based crosslinking agent, and the back surface of the support is obtained. Provided is an easily adhesive film for an optical sheet, wherein the uppermost layer of the formed back layer is a polyolefin layer.
[0018] 本発明によれば、支持体の光学機能層形成面 (表面）に易接着層として、架橋剤を 含有するスチレン-ブタジエン共重合ラテックス層又は水系ウレタン榭脂層を塗設し、 支持体の裏面 (易接着層が塗設されている面の反対面）の最上層にポリオレフイン層 を形成している。  According to the present invention, a styrene-butadiene copolymer latex layer containing a crosslinking agent or a water-based urethane resin layer is coated as an easy-adhesion layer on the surface (surface) of the support on which the optical function layer is formed, A polyolefin layer is formed on the top of the back of the body (opposite to the side on which the easy-adhesion layer is applied).
[0019] これにより、得られた易接着性フィルムの易接着層の表面に光学機能層として、たと えばアクリル系紫外線硬化性榭脂層を形成する製造工程にお ヽて、易接着フィルム を送り出して搬送していく際に、ブロッキングがなぐ搬送を良好に行える。  [0019] Thereby, the easily adhesive film is delivered as an optical functional layer on the surface of the easily adhesive layer of the easily adhesive film obtained, for example, in a manufacturing process for forming an acrylic ultraviolet curable resin layer. When carrying out transport, blocking can be carried out well.
[0020] したがって、本発明で得られたプリズムシートは、優れた接着性を有しており、ブロッ キングがないため、透明性にも優れており、安定して製造が可能である。  Therefore, the prism sheet obtained in the present invention has excellent adhesion and is free from blocking, so it is also excellent in transparency and can be stably manufactured.
[0021] 以上、本発明によれば、易接着層塗設後におけるブロッキングを防止する光学シ 一ト用易接着性フィルムを提供することができる。  As described above, according to the present invention, it is possible to provide an easily adhesive film for an optical sheet that prevents blocking after application of the easily adhesive layer.
[0022] なお、特許文献 3は、本発明とプライマー層の処方が異なり（光硬化タイプ)、また、 対称もレンチキュラーレンズであり、更に、ノック層に言及されておらず、本発明とは 相違する。  Patent Document 3 is different from the present invention in the formulation of the primer layer (photo-curing type), and the symmetry is also a lenticular lens, and further, the knock layer is not mentioned, and the difference from the present invention Do.
[0023] また、特許文献 4は、転写層と支持体との間に接着層を付与する点では本発明と同 様であるが、特許文献 4においては転写工程時に接着層を付与するものであり、転 写工程前に接着層を付与する本発明とは相違する。更に、特許文献 4は、本発明の 特徴であるバック層に言及されて ヽな 、。  Patent Document 4 is similar to the present invention in that an adhesive layer is provided between the transfer layer and the support, but in Patent Document 4, an adhesive layer is provided during the transfer step. This is different from the present invention in which the adhesive layer is applied before the transfer process. Furthermore, Patent Document 4 mentions a back layer which is a feature of the present invention.
[0024] 本発明にお 、て、前記支持体がポリエステルフィルムであり、前記バック層がアタリ ルラテックスと酸化スズを含有する第 1層と、該第 1層の上に形成されたポリオレフイン 層である第 2層とを備えていることが好ましい。また、本発明において、前記支持体が ポリエステルフィルムであり、前記バック層が導電性ポリマーを含有する第 1層と、該 第 1層の上に形成されたポリオレフイン層である第 2層とを備えていることが好ましい。 このようなバック層であれば、本発明の効果がより得られる。 In the present invention, the support is a polyester film, and the back layer is a first layer containing an allyl latex and tin oxide, and a polyolefin layer formed on the first layer. It is preferable to have a certain second layer. In the present invention, the support is a polyester film, and the back layer contains a first layer containing a conductive polymer; It is preferable to have a second layer which is a polyolefin layer formed on the first layer. With such a back layer, the effects of the present invention can be further obtained.
[0025] また、本発明にお 、て、前記支持体がポリエチレンテレフタレートであることが好ま しい。支持体としてはポリエチレンテレフタレート以外のポリエステルフィルムも使用で きるが、ポリエチレンテレフタレートであれば、本発明の効果が好適に得られる。  Furthermore, in the present invention, the support is preferably polyethylene terephthalate. Although polyester films other than polyethylene terephthalate can also be used as the support, the effects of the present invention can be suitably obtained with polyethylene terephthalate.
[0026] また、本発明において、前記易接着層上に光学機能層が形成されていることが好 ましぐ前記光学機能層が紫外線硬化樹脂からなるプリズム層であることが好ましい。  Further, in the present invention, it is preferable that an optical functional layer is formed on the easily adhesive layer, and the optical functional layer is a prism layer made of an ultraviolet curing resin.
[0027] また、本発明は、支持体の表面に易接着層を塗設する工程と、前記支持体の裏面 に最上層がポリオレフイン層であるバック層を塗設する工程と、前記易接着層及びバ ック層が塗設された前記支持体を乾燥する工程と、乾燥後の前記支持体を巻き取る 工程と、巻き取られた前記支持体の前記易接着層上に光学機能層を形成する工程 と、を備えることを特徴とする光学シート用易接着性フィルムの製造方法を提供する。  In the present invention, the step of applying an easily bonding layer on the surface of a support, the step of applying a back layer whose top layer is a polyolefin layer on the back side of the support, and the easily bonding layer And drying the backing on which the backing layer is applied, winding the backing after drying, and forming an optically functional layer on the easily adhesive layer of the wound backing. Providing a method for producing an easily adhering film for an optical sheet, comprising the steps of
[0028] 本発明によれば、易接着層塗設後におけるブロッキングを防止する光学シート用易 接着性フィルムを提供することができる。  According to the present invention, it is possible to provide an easily adhesive film for an optical sheet, which prevents blocking after application of the easily adhesive layer.
図面の簡単な説明  Brief description of the drawings
[0029] [図 1]実施例で使用される榭脂液を構成する化合物の重量比を示す表  FIG. 1 is a table showing the weight ratio of compounds constituting the resin solution used in the examples.
[図 2]エンボスシートの製造装置の構成を示す概念図  [Fig. 2] A conceptual diagram showing the configuration of a device for manufacturing an embossed sheet
[図 3]エンボスローラの回転軸の軸方向に沿った断面の概略を示す図  [FIG. 3] A diagram showing an outline of a cross section along the axial direction of the rotation axis of the embossing roller
[図 4]実施例 1〜5及び比較例 1〜6に基づいて作成されたエンボスシートのヘイズ、 テープ剥離試験、及びブロッキング試験の結果を示す表  [FIG. 4] A table showing the results of the haze, the tape peeling test, and the blocking test of embossed sheets prepared based on Examples 1 to 5 and Comparative Examples 1 to 6.
符号の説明  Explanation of sign
[0030] 10· ··エンボスシートの製造装置、 11…シート供給部、 12· ··塗布部、 13· ··エンボス ローラ、 14· · ップローラ、 15· ··榭脂硬化部、 16…剥離ローラ、 17· ··保護フィルム 供給手段、 18· ··シート巻き取り手段、 H…保護フィルム、 W…シート  [0030] 10 · · · Embossed sheet manufacturing equipment, 11 ... sheet feeding section, 12 · · application section, 13 · · embossing roller, 14 · · p roller, 15 · · · resin cured section, 16 ... peeling Roller, 17 · · · protective film Supply means, 18 · · sheet winding means, H ... protective film, W ... sheet
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0031] 以下、本発明に係る光学シート用易接着性フィルム、及びその製造方法の好ましい 実施の形態について詳説する。 Hereinafter, preferred embodiments of the easily adhesive film for an optical sheet according to the present invention and the method for producing the same will be described in detail.
[0032] 本発明にお 、て、支持体 (フィルム)を構成するポリエステル系榭脂（以下、適宜、「 ポリエステル」と称する）としては、芳香族二塩基酸又はそのエステル形成性誘導体と ジオール又はそのエステル形成性誘導体とから合成される線状飽和ポリエステルが 挙げられる。 In the present invention, a polyester-based resin (hereinafter referred to as “ Examples of “polyester” include linear saturated polyesters synthesized from an aromatic dibasic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof.
[0033] 本発明に用い得るポリエステルの具体例としては、ポリエチレンテレフタレート、ポリ エチレンイソフタレート、ポリエチレンナフタレート、ポリブチレンテレフタレート、ポリ（1 , 4ーシクロへキシレンジメチレンテレフタレート）、ポリエチレン 2, 6 フタレンジ力 ルポキシレート等が挙げられる。このうち、入手の容易性、経済性及び効果の観点か ら、ポリエチレンテレフタレート、ポリエチレンナフタレート等が好ましい。  Specific examples of the polyester that can be used in the present invention include polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, polybutylene terephthalate, poly (1,4-cyclohexylene dimethylene terephthalate), polyethylene 2, 6 Examples include propoxylates and the like. Among these, polyethylene terephthalate, polyethylene naphthalate and the like are preferable from the viewpoint of easy availability, economy and effect.
[0034] また、フィルムの素材として、本発明の効果を損なわない限りにおいて、これらの共 重合体又はこれらと小割合の他榭脂とのブレンド物なども用いることができる。  Further, as a material of the film, these copolymers or a blend of these with a small amount of other fats may be used as long as the effects of the present invention are not impaired.
[0035] 更に、このポリエステルフィルムの中には、滑り性を良くするために少量の無機又は 有機の微粒子、たとえば、酸化チタン、炭酸カルシュゥム、シリカ、硫酸バリユウム、シ リコーン等の無機フィラー、アクリル、ベンゾグアナミン、テフロン（登録商標）、ェポキ シ等の如き有機フィラー、ポリエチレングリコール（PEG)、ドデシルベンゼンスルホン 酸ソーダ等の接着性向上剤や帯電防止剤を含有させることができる。  [0035] Further, in the polyester film, a small amount of inorganic or organic fine particles, for example, titanium oxide, calcium carbonate, silica, barium sulfate, inorganic fillers such as silicone, acrylic, etc., to improve slipperiness. An organic filler such as benzoguanamine, Teflon (registered trademark) or epoxy, an adhesion improver such as polyethylene glycol (PEG) or sodium dodecylbenzene sulfonate, or an antistatic agent can be contained.
[0036] 本発明のポリエステルフィルムは、前記の如きポリエステル榭脂を溶融押出しでフィ ルム状にし、縦及び横二軸延伸による配向結晶化及び熱処理による結晶化させるこ とにより形成し得る。これらフィルムの製造方法、条件は、公知の方法、条件を適宜選 択して用いることができる。  The polyester film of the present invention can be formed by melt extrusion of a polyester resin as described above to form a film, orientation crystallization by longitudinal and transverse biaxial stretching, and crystallization by heat treatment. As the production method and conditions of these films, known methods and conditions can be appropriately selected and used.
[0037] ここで用いられるポリエステルフィルムの厚さに特に制限はなぐフィルムの使用目 的に応じて適宜選択できる力 一般的には、 5〜500 /ζ πιとして用いることが好ましい  The thickness of the polyester film used herein is not particularly limited, and can be appropriately selected according to the purpose of use of the film. Generally, it is preferable to use as 5-500 / ζπι
[0038] 本発明で用いる易接着層は、スチレン—ブタジエン共重合体 (以下、適宜、「SBR」 と略称する)又は水系ウレタン榭脂と架橋剤とを含有することを特徴とする。 SBRは、 スチレンとブタジエンとを主体とした共重合体であり、更に必要に応じて他の成分を 共重合したものを意味する。この共重合体は、スチレンとブタジエンとの含有比率を 調整することにより、様々な物性のものを得られることが知られている。 The easily bonding layer used in the present invention is characterized by containing a styrene-butadiene copolymer (hereinafter, appropriately abbreviated as “SBR”) or a water-based urethane resin and a crosslinking agent. SBR is a copolymer based on styrene and butadiene, and further means one obtained by copolymerizing other components as necessary. It is known that this copolymer can be obtained with various physical properties by adjusting the content ratio of styrene and butadiene.
[0039] 本発明の如く易接着層を形成する場合、スチレン ブタジエン共重合体はラテック スであることが好ましい。具体的には、 日本ゼオン社から-ポール (商品名）として、住 友ノーガタック社からノーガテックス（商品名）として、武田薬品工業社からクロスレン（ 商品名）として、旭ダウ社から旭ダウラテックス（商品名）として、その他に大日本イン キ化学工業社や海外メーカーカゝら販売されている市販品を用いることもできる。 When forming an easy adhesion layer as in the present invention, the styrene-butadiene copolymer is a latex. It is preferable that Specifically, from Nippon Zeon Co., Ltd.-as Paul (trade name), from Sumitoga Inc. as Nogatex (trade name), from Takeda Pharmaceutical Co., Ltd. as Cross Ren (trade name), Asahi Dow Latex (from Asahi Dow Co., Ltd.) Alternatively, commercial products sold by Dainippon Ink Chemical Co., Ltd. or overseas manufacturers may be used as trade names).
[0040] ラテックスの場合、分散体粒子の粒径は、 5 μ m以下が好ましぐ 1 μ m以下がより 好ましぐ 0. 2 m以下が更に好ましい。粒子径が大きい場合には、塗布工程で粒 子の凝集が生じやす力つたり、フィルムの透明性、光沢などが不良になったりする問 題がある。更に塗布層の厚さを薄くする必要がある場合には、それに応じて粒径を小 さくする必要がある。  In the case of a latex, the particle size of the dispersion particles is preferably not more than 5 μm, more preferably not more than 1 μm, and still more preferably not more than 0.2 m. When the particle diameter is large, there is a problem that aggregation of particles tends to occur in the coating step, or the transparency, gloss and the like of the film become poor. Furthermore, if it is necessary to reduce the thickness of the coating layer, it is necessary to reduce the particle size accordingly.
[0041] 易接着層のスチレン ブタジエン共重合体におけるスチレン Zブタジエンの含有 比率は 50/50〜80/20程度であることが好ましい。ラテックス中に含まれる SBRの 割合は、固型分重量として 30〜50重量％であることが好ま 、。  The content ratio of styrene Z butadiene in the styrene butadiene copolymer of the easy adhesion layer is preferably about 50/50 to 80/20. The proportion of SBR contained in the latex is preferably 30 to 50% by weight as solid weight.
[0042] また、この易接着層には、 SBRの物性を向上させるために架橋剤が添加されるが、 ここで用いられる架橋剤としてはトリアジン系架橋剤が好ま 、。  In addition, although a crosslinking agent is added to the easily bonding layer in order to improve the physical properties of SBR, a triazine-based crosslinking agent is preferable as the crosslinking agent used here.
[0043] 本発明の易接着性フィルムを製造するに当たっては、ポリエステル系榭脂フィルム 基体上にスチレン ブタジエン共重合体と、架橋剤とを含有する塗布液を塗布後に 高温乾燥させ、易接着層を形成することが好ましい。  In order to produce the easily adhesive film of the present invention, a coating solution containing a styrene-butadiene copolymer and a crosslinking agent is coated on a polyester-based resin film substrate and then dried at high temperature to form an easily adhesive layer. It is preferable to form.
[0044] 水系ウレタン榭脂については、ウレタン榭脂に若干の親水基又は親水性セグメント を付与し、水溶性又は自己分散型にしたものが好ましぐ側鎖にシラノール基を含有 している自己乳化型も用いられる。具体的には、第一工業製薬社製のスーパーフレ ックス (商品名）や三井武田ケミカル社製のタケラック (商品名）を用いることができる。  [0044] With regard to water-based urethane resin, a self-water-soluble or self-dispersed one having a hydrophilic group or a hydrophilic segment added to the urethane resin and having a water-soluble or self-dispersible type preferably contains a silanol group in the side chain. An emulsion type is also used. Specifically, Superflex (trade name) manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd. or Takelac (trade name) manufactured by Mitsui Takeda Chemical Co., Ltd. can be used.
[0045] ウレタン榭脂層についても、ウレタン榭脂の物性を向上させるために架橋剤が添カロ される力 ここで用いられる架橋剤は、平均エポキシ官能基数が好ましくは 3. 5以上 であるエポキシ架橋剤又はカルポジイミド架橋剤が好ましい。  Also for the urethane resin layer, the force to which a crosslinking agent is added to improve the physical properties of the urethane resin The crosslinking agent used here is an epoxy having an average number of epoxy functional groups of preferably 3.5 or more. Crosslinkers or carpodiimide crosslinkers are preferred.
[0046] 次に、表面に易接着層が塗設された支持体の裏面に塗布するバック層について説 明する。裏面に塗設されるバック層としては、ポリオレフイン層が優れている。ポリオレ フィンであれば、ポリエステルフィルム等の支持体と適度な接着力が得られ、反対面（ 表面）に塗設されて 1ヽる易接着層とのブロッキングを防止できる。 [0047] また、ノ ック層には、アクリルラテックスと酸化スズからなる導電層又は導電性ポリマ 一層を塗設しておくことが好ましい。これにより、帯電によるゴミ付きを防止できる。本 発明では、易接着とその裏面にポリオレフインの単層若しくはアクリルラテックスと酸 ィ匕スズカゝらなる導電層、又は導電性ポリマー層の上にポリオレフイン層を塗布して乾 燥し、巻き取る工程に適用できる。 Next, the back layer to be applied to the back surface of the support having the easy-adhesion layer coated on the front surface will be described. A polyolefin layer is excellent as a back layer coated on the back side. If it is a polyolefin, appropriate adhesion with a support such as a polyester film can be obtained, and blocking with the easily adhesive layer which is coated on the opposite surface (surface) can be prevented. In addition, it is preferable to apply a conductive layer or a conductive polymer layer composed of an acrylic latex and tin oxide to the knock layer. This makes it possible to prevent dust from being attached due to charging. In the present invention, in the step of adhesion and adhesion, a polyolefin layer is coated on the back surface of a polyolefin single layer or a conductive layer consisting of an acrylic latex and an acrylic latex, or a conductive polymer layer, dried and wound up. Applicable
[0048] ポリオレフインについては、三井化学製のポリオレフイン水性ディスパージヨンや東 邦化学社製のエチレン系共重合ェマルジヨンを用いることができる。  As the polyolefin, a polyolefin aqueous dispersion manufactured by Mitsui Chemicals, or an ethylene-based copolymer emulsion manufactured by Toho Chemical Co., Ltd. can be used.
[0049] ポリエステルフィルムに易接着層用塗布液及びポリオレフイン塗布液を適用するの に使用する装置としては、原崎勇次著、「コーティング方式」、慎書店 1979年 10月発 行に示されているリバースコータ、グラビアコータ、ロッドコータ、エアドクタコータなど をはじめ、公知の塗布装置の 、ずれも用いることができる。  As an apparatus used to apply the coating solution for easy adhesion layer and the coating solution for polyolefin layer to polyester film, Yuji Harazaki, “Coating method”, Shin Shoten, published in October 1979, Deviations of known coating devices can also be used, such as coaters, gravure coaters, rod coaters, air doctor coaters and the like.
[0050] ポリエステルフィルムに易接着層用塗布液及びポリオレフイン塗布液を塗布する時 期は、二軸延伸前、二軸延伸後又は表層材を塗布する直前などである。また、特公 昭 41— 8470号などに例示されているロール延伸法による一軸延伸ポリエステルフィ ルムに塗布剤を塗布し、適当な乾燥を施し、又は乾燥を施さず直ちに先の延伸方向 とは直角方向に延伸し、熱処理する方法も適用し得る（以下塗布延伸法と略称する）  The time of applying the coating solution for easy adhesion layer and the polyolefin coating solution to the polyester film is before biaxial stretching, after biaxial stretching, or immediately before applying a surface layer material. Also, a coating agent is applied to a uniaxially stretched polyester film by a roll stretching method as exemplified in Japanese Patent Publication No. 41-8470 and the like, and the film is appropriately dried or not dried immediately or at right angles to the previous stretching direction. It is also possible to apply a method of stretching in the direction and heat treatment (hereinafter referred to as coating and stretching method)
[0051] 塗布延伸法によれば、延伸と同時に塗布層の乾燥が可能になり、塗布層が延伸さ れることにより、塗布厚さを薄くすることができるとともに、塗布延伸法以外の方法では 困難であった広幅の積層フィルムが得られる。 According to the coating and drawing method, the coating layer can be dried simultaneously with the drawing, and the coating layer can be drawn to thin the coating thickness, and it is difficult by methods other than the coating and drawing method. A wide laminated film which was
[0052] ポリエステルフィルム上の易接着層及び易接着層の裏面に形成されるポリオレフィ ン層の厚さは、 0. 005〜0. 5 /z mの範囲力好ましい。塗布層の厚さ力^). 005 m未 満では、均一に塗布しにくいため、製品に塗布むらが生じやすくなつたり、積層される プリズム層との接着性が不十分であったりする。一方、塗布層の厚さが 0. を超 すと、フィルム相互が固着しやすくなつたり、フィルム全体の光透過性が低下したりす る虞がある。  The thickness of the easily adhesive layer on the polyester film and the thickness of the polyolefin layer formed on the back surface of the easily adhesive layer is preferably in the range of 0.50 to 0.5 / z m. If the thickness of the coated layer is less than 005 m, it is difficult to apply uniformly, so that the product tends to have uneven coating, or the adhesion to the laminated prism layer is insufficient. On the other hand, when the thickness of the coating layer is more than 0, the films may be easily fixed to each other or the light transmittance of the entire film may be reduced.
[0053] 前記の各塗布液には、必要に応じて固着性改良剤、塗布性改良剤、消泡剤、紫外 線吸収剤、酸化防止剤、帯電防止剤、潤滑剤、無機系微粒子、染料、及び顔料など が含有されていてもよい。裏面に形成されるポリオレフイン層については、その下層 に帯電防止層としてアクリルラテックスと酸化スズからなる導電層又はポリチォフェン やポリア-リンなどの導電性ポリマー層を塗設しておくことが好ましい。 In each of the above-mentioned coating liquids, if necessary, a sticking improver, a coatability improver, an antifoamer, an ultraviolet ray absorber, an antioxidant, an antistatic agent, a lubricant, inorganic fine particles, a dye , And pigments May be contained. With respect to the polyolefin layer formed on the back surface, it is preferable to coat a conductive layer comprising an acrylic latex and tin oxide or a conductive polymer layer such as polythiophen or polyarrine as an antistatic layer in the lower layer.
[0054] このようにして得られた易接着性フィルムの接着性を評価するために、易接着層の 表面に紫外線硬化性榭脂層を形成して、テープ剥離試験を行う場合、隣接する各層 間の 、ずれの界面にぉ 、ても剥離されな 、強度を有することが望ま 、。  In order to evaluate the adhesiveness of the easily adhesive film thus obtained, when an ultraviolet curable resin layer is formed on the surface of the easily adhesive layer and a tape peeling test is performed, adjacent layers are formed. It is desirable that the material has strength, even if it is not peeled off, at the interface of the gap.
[0055] 以上説明したように、本発明の易接着性フィルムは、ポリエステルフィルム基材の片 面に前記の易接着層とその裏面の最上層にポリオレフイン層を形成して構成される。 実施例  As described above, the easily adhesive film of the present invention is configured by forming a polyolefin layer on the above-mentioned easily adhesive layer on the one surface of the polyester film substrate and the uppermost layer on the back surface thereof. Example
[0056] 以下に具体例を挙げて本発明を詳細に説明するが、本発明はこれらに限定される ものではない。  The present invention will be described in detail by way of specific examples, but the present invention is not limited thereto.
[0057] [実施例 1] Example 1
—支持材の作製—  —Preparation of support material—
(1)支持体の作製  (1) Preparation of support
ポリエチレンテレフタレート（PET)フィルムを縦方向及び横方向の各々に 3. 3倍に 延伸する 2軸延伸を行った後に、 PETフィルムを 240° Cで 20秒間熱固定後、これと 同じ温度で横方向に約 4%緩和させた。この後、テンターのチャック部をスリット処理 したあと、両端にナール加工を行い、巻き取った。このようにして 180 mの厚さを持 つ基体 36のロール状の支持体を得た。  After stretching the polyethylene terephthalate (PET) film 3. 3 times in each of the longitudinal direction and the transverse direction after biaxial stretching, the PET film is heat-set at 240 ° C. for 20 seconds, and then transverse direction at the same temperature. Relaxed about 4%. After that, the chuck portion of the tenter was slitted, knurled at both ends, and wound up. In this way, a roll-like support of substrate 36 having a thickness of 180 m was obtained.
[0058] (2)易接着層  (2) Easy adhesion layer
塗布に先立ち、下記の表面処理を行った。ビラ一社製ソリッドステートコロナ処理機 (6KVAモデル）を用い、支持体の両面を室温下において 20mZ分の送り速度で処 理した。この時の電流、電圧の読み取り値から、支持体には 0. 375kV'A.分 Zm2 の処理がなされて ヽること〖こなる。  The following surface treatment was performed prior to application. Both surfaces of the support were processed at a feed rate of 20 mZ at room temperature using a Solid State Corona Processor (6 KVA model) manufactured by Villa One. From the current and voltage readings at this time, the support is treated with 0.375 kV'A. Min.
[0059] この時の処理周波数は、 9. 6kHzであり、電極と誘電体ローラとのギャップタリァラ ンスは 1. 6mmであった。この上に下記組成の塗布液をフィルム基材の片面に 6ml Zm2塗布し、 185° Cで 5分間乾燥して、厚さ 0. 15 mの易接着層を形成した。  The processing frequency at this time was 9.6 kHz, and the gap alignment between the electrode and the dielectric roller was 1.6 mm. A coating solution of the following composition was applied onto one side of the film substrate by 6 ml Zm2 and dried at 185 ° C. for 5 minutes to form an easily adhering layer having a thickness of 0.15 m.
[0060] (塗布液の組成） 'ブタジエン スチレン共重合ラテックス（固形分 43%、ブタジエン Zスチレン重量 比 = 32Z68) : 13ml (Composition of Coating Solution) 'Butadiene-Styrene copolymer latex (solid content 43%, butadiene Z styrene weight ratio = 32Z68): 13 ml
•2, 4 ジクロロ一 6 ヒドロキシ一 S トリァジンナトリウム塩 8%水溶液： 7ml •ポリスチレン粒子（平均粒子径： 1. 8 m) 2%水溶液 : 0. 5ml  • 2, 4 dichloro mono 6 hydroxy one S triazine sodium salt 8% aqueous solution: 7 ml • polystyrene particles (average particle size: 1.8 m) 2% aqueous solution: 0.5 ml
'蒸留水： 79. 5ml  'Distilled water: 79. 5ml
(3)バック第 1層塗布 (導電性層）  (3) Back first layer application (conductive layer)
支持体の裏面 (易接着層が設けられていない側の表面）に、下記組成よりなる帯電 防止層用塗布液をバーコ一ターにより塗布し、 185° Cで 5分間乾燥して、厚さ 0. 1 5 μ mの帯電防止層を形成した。  A coating solution for an antistatic layer having the following composition is coated on the back surface of the support (the surface on which the easy adhesion layer is not provided) with a bar coater and dried at 185 ° C. for 5 minutes. A 15 μm antistatic layer was formed.
[0061] (塗布液の組成） (Composition of Coating Solution)
•アクリル榭脂水分散液 1. 9重量部  • Acrylic resin water dispersion 1. 9 parts by weight
(ジユリマー ET410、固形分 30重量％、日本純薬 (株)製）  (Diulimer ET410, solid content 30% by weight, manufactured by Nippon Junyaku Co., Ltd.)
•二酸化スズーアンチモン複合金属酸ィヒ物水分散物 9. 1重量部 • Tin dioxide-antimony composite metal acid aqueous dispersion 9. 1 part by weight
(TDL-S 三菱マテリアル社製 17重量0 /0) (TDL-S manufactured by Mitsubishi Materials Corporation 17 weight 0/0)
.ドデシルジフエ-ルエーテルジスルフォン酸ナトリウム 0. 1重量部  .1 part by weight of sodium dodecyl diphenyl ether disulfonate
(サンデット BL 三洋化成製 44. 6% )  (Sandet BL made by Sanyo Chemical 44. 6%)
'ポリオキシエチレンフエ-ルエーテル 0. 1重量部  '0.1 parts by weight of polyoxyethylene ether
•エポキシ架橋剤 0. 2重量部  • Epoxy crosslinker 0.2 parts by weight
(デナコール EX— 614B ナガセ化成社製）  (Denacol EX-614B Nagase Chemical Industries, Ltd.)
上記の混合体に蒸留水を加えて 100重量部となるように調製した。  Distilled water was added to the above mixture to prepare 100 parts by weight.
[0062] (4)バック第 2層塗布 (ポリオレフイン層） (4) Back second layer application (polyolefin layer)
上記バック第 1層の上に、下記組成のポリオレフインラテックス水分散液を、乾燥膜厚 が 0. 08 /z mになるように塗布した。これを 140° Cで 3分間乾燥した。  On the back first layer, an aqueous dispersion of polyolefin latex having the following composition was applied so as to have a dry film thickness of 0.88 / z m. It was dried at 140 ° C. for 3 minutes.
[0063] (塗布液の組成） (Composition of Coating Liquid)
•ポリオレフイン 1. 6重量部  • Polyolefin 1. 6 parts by weight
(ケミパール S— 120、 27重量％、三井石油化学 (株)製）  (Kemipearl S-120, 27 wt%, manufactured by Mitsui Petrochemicals Co., Ltd.)
'ポリエチレン微粒子 0. 04重量部  'Polyethylene particles 0. 04 parts by weight
(ケミパール W950 40重量％、三井石油化学 (株)製） .コロイダルシリカ 1. 1重量部 (Kemipearl W950 40% by weight, manufactured by Mitsui Petrochemicals Co., Ltd.) . Colloidal silica 1.1 parts by weight
(スノーテックス C、 20%重量 日産化学 (株)製）  (Snowtex C, 20% by weight Nissan Chemical Co., Ltd.)
•エポキシ架橋剤 0. 2重量部  • Epoxy crosslinker 0.2 parts by weight
(デナコール EX— 614B、ナガセ化成 (株)製）  (Denacol EX-614B, Nagase Chemical Industries, Ltd.)
上記の混合体に蒸留水を加えて合計が 100重量部になるように調製した。  Distilled water was added to the above mixture to prepare a total of 100 parts by weight.
[0064] 一光学機能層（プリズム層）の作製— Preparation of One Optically Functional Layer (Prism Layer) —
(1)榭脂液の調整  (1) Adjustment of resin solution
図 1の表に示すィ匕合物を記載の重量比にて混合し、 50° Cに加熱して撹拌溶解し 、榭脂液を得た。なお、各化合物の名称と内容は以下の通りである。  The mixture shown in the table of FIG. 1 was mixed in the weight ratio described, heated to 50 ° C., stirred and dissolved, and a resin solution was obtained. In addition, the name and the content of each compound are as follows.
[0065] ·ΕΒ3700 :エベクリル 3700、ダイセル UC (株）製、 ·] 3700: Ebecryl 3700, manufactured by Daicel UC Co., Ltd.,
•ビスフエノール Αタイプエポキシアタリレート、  • Bisphenol Α type epoxy attaliate,
(粘度： 2200mPa' sZ65° C)  (Viscosity: 2200 mPa 's Z 65 ° C)
• BPE200： NKエステル BPE— 200、新中村化学 (株）製、  • BPE200: NK Ester BPE—200, Shin-Nakamura Chemical Co., Ltd.,
•エチレンォキシド付カ卩ビスフエノール Aメタクリル酸エステル、  • Ethylenxide with carbon bis phenol A methacrylate,
(粘度： 590mPa' sZ25° C)  (Viscosity: 590 mPa 's Z 25 ° C)
•BR— 31 ：-ユーフロンティア BR— 31、第一工業製薬工業 (株)製、 • BR—31:-You Frontier BR— 31, Dai-ichi Kogyo Seiyaku Kogyo Co., Ltd.,
•トリブロモフエノキシェチルアタリレート、 • Tribromophane chil ataliate,
(常温で固体、融点 50° C以上）  (Solid at normal temperature, melting point 50 ° C or higher)
•M110 ：ァロニタス M— 110、東亞合成（株）製、  • M110: Aronitas M-110, manufactured by Toagosei Co., Ltd.
'パラクミルフエノールエチレンォキシド変性アタリレート  'Paracumyl phenol ethylene oxide modified atalylate
(粘度： 130mPa' sZ25° C)  (Viscosity: 130mPa 's Z 25 ° C)
•LR8893X:Lucirin LR8893X、 BASF (株）製の光ラジカル発生剤、 • LR8893X: Lucirin LR8893X, a photoradical generator manufactured by BASF Co., Ltd.
•ェチルー 2, 4, 6—トリメチルベンゾィルエトキシフエニルォスフインォキシド• Ethyl 2,4,6-trimethylbenzylethoxyphenyl hydroxide
•MEK ：メチルェチルケトン • MEK: methyl ethyl ketone
(2)プリズム層の形成  (2) Formation of prism layer
図 2に示される構成のエンボスシートの製造装置 10を使用して、支持体上にプリズ ム層を形成した。  A prism layer was formed on a support using the embossed sheet manufacturing apparatus 10 configured as shown in FIG.
[0066] 支持体（シート） Wとして、幅 500mmの支持材を用いた。エンボスローラ 13として、 長さ（シート Wの幅方向）力 700mm、直径が 300mmの S45C製で表面の材質を- ッケルとしたローラを使用した。ローラの表面の略 500mm幅の全周に、ダイヤモンド バイト（シングルポイント）を使用した切削加工により、ローラ軸方向のピッチが 50 m の溝を形成した。 As the support (sheet) W, a support having a width of 500 mm was used. As the embossing roller 13, A roller made of S45C, having a length (in the width direction of the sheet W) of 700 mm and a diameter of 300 mm, was used with the surface material as the gasket. A groove with a pitch of 50 m in the axial direction of the roller was formed on the entire surface of the roller approximately 500 mm wide by cutting using a diamond bit (single point).
[0067] 溝の断面形状は、頂角が 90度の三角形状で、溝の底部も平坦部分のない 90度の 三角形状である。すなわち、溝幅は 50 mであり、溝深さは約 25 mである。この溝 は、ローラの周方向に継ぎ目がないエンドレスとなるので、このエンボスローラ 13によ り、シート Wにプリズムレンズが形成できる。ローラの表面には、溝カ卩ェ後にニッケル メツキを施した。エンボスローラ 13の概略断面図を図 3に示す。  [0067] The cross-sectional shape of the groove is a triangular shape with an apex angle of 90 degrees, and the bottom of the groove is also a triangular shape of 90 degrees without a flat portion. That is, the groove width is 50 m and the groove depth is about 25 m. Since this groove is endless without seams in the circumferential direction of the roller, a prism lens can be formed on the sheet W by the emboss roller 13. The surface of the roller was plated with nickel after grooved. A schematic cross-sectional view of the embossing roller 13 is shown in FIG.
[0068] 塗布手段 12として、エタストルージョンタイプの塗布ヘッド 12Cを用いたダイコータ を使用した。塗布液 F (榭脂液）として、既述の表に記載の液を使用した。  [0068] As the coating means 12, a die coater using an ejection type coating head 12C was used. As a coating solution F (resin solution), the solution described in the above-mentioned table was used.
[0069] 塗布液 F (榭脂）の湿潤状態の厚さは、有機溶剤乾燥後の膜厚が になるよう に、塗布ヘッド 12Cへの各塗布液 Fの供給量を、供給装置 12Bにより制御した。  The thickness of the coating liquid F (resin) in the wet state is controlled by the supply device 12 B to supply the amount of each coating liquid F to the coating head 12 C so that the film thickness after drying of the organic solvent is obtained. did.
[0070] 乾燥手段 19として熱風循環式の乾燥装置を用いた。熱風の温度は 100° Cとした 。 -ップローラ 14として、直径が 200mmで、表面にゴム硬度が 90のシリコンゴムの層 を形成したローラを使用した。エンボスローラ 13と-ップローラ 14とでプリズムシート Wを押圧する-ップ圧（実効の-ップ圧）は、 0. 5Paとした。  A hot air circulating drier was used as the drying means 19. The temperature of the hot air was 100 ° C. As the roller 14, a roller having a diameter of 200 mm and a silicone rubber layer with a rubber hardness of 90 formed on the surface was used. The prism sheet W was pressed by the emboss roller 13 and the roller roller 14. The pressure (effective pressure) of the prism sheet W was set to 0.5 Pa.
[0071] 榭脂硬化手段 15として、メタルハライドランプを使用し、 1000mjZcm2のエネルギ 一で照射を行った。  A metal halide lamp was used as the resin curing means 15, and irradiation was performed at an energy of 1000 mj Z cm 2.
[0072] 以上により、図 4の表に示された実施例 1に対応する、凹凸パターンが形成された プリズムシート Wを得た。  From the above, a prism sheet W on which a concavo-convex pattern was formed, which corresponds to Example 1 shown in the table of FIG. 4, was obtained.
[0073] [実施例 2] Example 2
易接着層の塗布液が下記組成であること以外は実施例 1と同様にして、光学用フィ ルム（プリズムシート）を得た。  An optical film (prism sheet) was obtained in the same manner as in Example 1 except that the coating solution for the easy adhesion layer had the following composition.
[0074] (塗布液の組成） (Composition of Coating Solution)
•タケラック W6061 (三井武田ケミカル社製水系ウレタン榭脂） 30%水分散液： 7. 9 ml  • Takelac W6061 (Mitsui Takeda Chemical Co., Ltd. water based urethane resin) 30% aqueous dispersion: 7. 9 ml
'デナコール EX— 521 (ナガセケムテックス社製） 100% : 0. 5ml •ポリスチレン粒子（平均粒子径： 1. 8 m) 2%水溶液 : 0. 5ml 'Denacol EX-521 (Nagase Chemtex Co., Ltd.) 100%: 0.5 ml • Polystyrene particles (average particle size: 1.8 m) 2% aqueous solution: 0.5 ml
.エマレックス 710 (日本ェマルジヨン社製 ポリオキシエチレンアルキルエーテル） 1 % : 0. 7ml  Emarex 710 (Nippon Emulsion Co., Ltd. polyoxyethylene alkyl ether) 1%: 0.7 ml
'蒸留水： 90. 4ml  'Distilled water: 90. 4ml
[実施例 3]  [Example 3]
下記組成の塗布液を支持体の片面に 6mlZm2塗布し、 100° Cで 5分間乾燥して 、厚さ 0. 15 mの易接着層を形成したこと以外は実施例 1と同様にして、光学用フィ ルム（プリズムシート）を得た。  A coating solution of the following composition was coated on one side of a support by 6 ml Zm 2 and dried at 100 ° C. for 5 minutes to form an easy-adhesion layer having a thickness of 0.15 m in the same manner as in Example 1. A film (prism sheet) was obtained.
[0075] (塗布液の組成） (Composition of Coating Solution)
'スーパーフレックス 460 (第一工業製薬社製水系ウレタン榭脂） 38% : 6. 2ml 'ポリスチレン粒子（平均粒子径： 1. 8 ） 2%水溶液： 0. 3ml  'Superflex 460 (water-based urethane resin manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) 38%: 6. 2 ml' polystyrene particles (average particle size: 1. 8) 2% aqueous solution: 0.3 ml
•カルポジライト V— 02— L2 (日清紡社製）固形分 40% : 1. 6ml  • Calpolyde light V — 02 — L2 (Nisshinbo Co., Ltd.) solid content 40%: 1. 6 ml
'蒸留水： 90. 4ml  'Distilled water: 90. 4ml
[実施例 4]  [Example 4]
下記組成の塗布液を、支持体の片面に 6mlZm2塗布し、 130° Cで 5分間乾燥し て、厚さ 0. 15 mの易接着層を形成したこと以外は実施例 1と同様にして、光学用 フィルム (プリズムシート）を得た。  A coating solution of the following composition was coated on one side of a support by 6 ml Zm 2 and dried at 130 ° C. for 5 minutes to form a 0.15 m thick easy-adhesion layer in the same manner as in Example 1. An optical film (prism sheet) was obtained.
[0076] (塗布液の組成） (Composition of Coating Liquid)
'ブタジエン スチレン共重合ラテックス（固形分 43%、ブタジエン Zスチレン重量 比 = 32Z68) : 13ml  'Butadiene-Styrene copolymer latex (solid content 43%, butadiene Z styrene weight ratio = 32Z68): 13 ml
•カルポジライト V— 02— L2 (日清紡社製）固形分 40% : 1. 6ml  • Calpolyde light V — 02 — L2 (Nisshinbo Co., Ltd.) solid content 40%: 1. 6 ml
•ポリスチレン粒子（平均粒子径： 1. 8 m) 2%水溶液 : 0. 5ml  • Polystyrene particles (average particle size: 1.8 m) 2% aqueous solution: 0.5 ml
'蒸留水： 79. 5ml  'Distilled water: 79. 5ml
[実施例 5]  [Example 5]
ノ ック第 1層の導電層の塗布液が下記組成であること以外は実施例 1と同様にして 、光学用フィルム (プリズムシート）を得た。  An optical film (prism sheet) was obtained in the same manner as in Example 1 except that the coating liquid for the first conductive layer of the knock layer had the following composition.
(塗布液の組成）  (Composition of coating solution)
•アクリル榭脂水分散液 1. 9重量部 (ジユリマー ET410、固形分 30重量％、 日本純薬 (株)製） • Acrylic resin water dispersion 1. 9 parts by weight (Dilyulmer ET410, solid content 30% by weight, manufactured by Nippon Junyaku Co., Ltd.)
•ポリア-リン 2. 7重量部  • Polyarene 2. 7 parts by weight
(導電性ポリア-リン水分散液、 ORMECON社製、 1. 9重量0 /0) (Conductive Poria - phosphate aqueous dispersion, Ormecon Co., 1.9 weight 0/0)
.ドデシルジフエ-ルエーテルジスルフォン酸ナトリウム 0. 1重量部 (サンデット BL 三洋化成製 44. 6% )  Sodium dodecyl diphenyl ether disulfonate 0.1 parts by weight (Sandet BL Sanyo Chemical 44. 6%)
'ポリオキシエチレンフエ-ルエーテル 0. 1重量部  '0.1 parts by weight of polyoxyethylene ether
•カルポジイミド架橋剤 0. 45重量部  • Carpimide imide crosslinker 0.45 parts by weight
(カルポジライト V— 02— L2 日清紡社製 固形分 40% )  (Kalposilite V-02-L2 Nisshinbo Co., Ltd. 40% solid content)
これに蒸留水をカ卩えて 100重量部となるように調製した。  To this was added distilled water to prepare 100 parts by weight.
[0077] [比較例 1] Comparative Example 1
実施例 1で裏面のバック層がノック 1層のみ塗設され、バック 2層が塗設されないこ と以外は実施例 1と同様にして、光学機能層塗設前の易接着フィルムを得た。  An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 1 except that only one layer of the back layer on the back surface was coated and no layer of the back 2 layer was coated in Example 1.
[0078] [比較例 2] Comparative Example 2
実施例 2で裏面のバック層がノック 1層のみ塗設され、バック 2層が塗設されないこ と以外は実施例 2と同様にして、光学機能層塗設前の易接着フィルムを得た。  An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 2 except that the back layer on the back surface was coated with only one knock layer and the back two layers were not coated in Example 2.
[0079] [比較例 3] Comparative Example 3
実施例 3で裏面のバック層がノック 1層のみ塗設され、バック 2層が塗設されないこ と以外は実施例 3と同様にして、光学機能層塗設前の易接着フィルムを得た。  An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 3 except that the back layer on the back surface was coated with only one knock layer and the back two layers were not coated in Example 3.
[0080] [比較例 4] Comparative Example 4
実施例 4で裏面のバック層がノック 1層のみ塗設され、バック 2層が塗設されないこ と以外は実施例 4と同様にして、光学機能層塗設前の易接着フィルムを得た。  An easy-adhesion film before application of the optical functional layer was obtained in the same manner as in Example 4 except that the back layer on the back surface was coated with only one knock layer and the back two layers were not coated in Example 4.
[0081] [比較例 5] Comparative Example 5
実施例 5で裏面のバック層がノック 1層のみ塗設され、バック 2層が塗設されないこ と以外は実施例 5と同様にして、光学機能層塗設前の易接着フィルムを得た。  An easily adhesive film before application of the optical functional layer was obtained in the same manner as in Example 5 except that only one layer of the back layer on the back surface was coated and no layer of the back 2 layer was coated in Example 5.
[0082] [比較例 6] Comparative Example 6
実施例 1で裏面のバック層が何も塗設されていないこと以外は実施例 1と同様にし て、光学機能層塗設前の易接着フィルムを得た。  An easily adhesive film before application of the optical functional layer was obtained in the same manner as in Example 1 except that no back layer on the back side was applied in Example 1.
[0083] [易接着性フィルムの評価:ヘイズ] プリズムシート上にプリズム層が形成される前のフィルム（支持材）のヘイズを JIS— K— 6714— 1977の曇価に記載されている方法に基づいて測定し、プリズムシート の透明性を示す指標とした。このヘイズ値の測定は、ヘイズメータ (NDH— 1001P、 日本電色工業 (株)製)を用いて行った。なお、ヘイズ値の数値が大きいほど透明性 に優れる。 [Evaluation of Easy-Adhesive Film: Haze] An index indicating the transparency of a prism sheet, which is measured based on the method described in the haze value of JIS-K-6714-1977 before the prism layer is formed on the prism sheet. And The haze value was measured using a haze meter (NDH-1001P, manufactured by Nippon Denshoku Kogyo Co., Ltd.). The larger the haze value, the better the transparency.
[0084] [製品の接着性評価：テープ剥離試験]  [Attachment evaluation of product: tape peel test]
得られたプリズムシートの表面に 11本の切込みを NTカッターによって形成した。こ の切込みの各々は、ポリエステルフィルム（ウェブ W)を貫通する深さまで lmm幅にク ロスカットされたものである。  Eleven cuts were formed on the surface of the obtained prism sheet by an NT cutter. Each of the cuts is cut to a width of 1 mm to a depth penetrating the polyester film (web W).
[0085] そして、この被検体の表面の全面にセロハンテープ（セロテープ（登録商標）：ニチ バン社製)を貼付し、そのセロハンテープを剥がす剥離試験を行った。この剥離試験 を、プリズム稜線方向及びプリズム平行方向にそれぞれ 3回繰り返した。そして、セロ ハンテープに付着して剥離されるプリズム層の切断片の数を計測した。  Then, cellophane tape (Cellotape (registered trademark): manufactured by Nichiban Co., Ltd.) was attached to the entire surface of the subject, and a peeling test was performed to peel off the cellophane tape. This peeling test was repeated three times in each of the prism ridge direction and the prism parallel direction. Then, the number of cut pieces of the prism layer attached to cellophane tape and peeled off was measured.
[0086] 図 4の表において、プリズム層の剥離が全く生じなかったものを〇で示し、プリズム 層の剥離が部分的に生じたものを△で示し、プリズム層の剥離がセロハンテープの 全面に亘つて生じたものを Xで示した。  In the table of FIG. 4, those with no peeling of the prism layer are indicated by 〇, those with partial peeling of the prism layer are indicated with Δ, and the peeling of the prism layer is on the entire surface of the cellophane tape. What has arisen is indicated by X.
[0087] [易接着フィルムのブロッキング試験]  Blocking Test of Easy-Adhesive Film
光学記機能層が塗設される前の易接着フィルムを、 23 ± 3° C、 50± 5%RHの雰 囲気下に 3時間放置した後、易接着フィルムを 35mm X 35mmの大きさに裁断し、 2 枚ずつ 5組重ね合わせ、同じ雰囲気下において、 84kgの加重をかけた状態での時 間を 24時間と 72時間の両方の水準で試験した。  The easy-adhesion film before being coated with the optically functional layer is left in an atmosphere of 23 ± 3 ° C, 50 ± 5% RH for 3 hours, and then the easy-adhesion film is cut into a size of 35 mm x 35 mm. Then, 5 pairs of 2 sheets were piled up, and under the same atmosphere, the time under a load of 84 kg was tested at the level of both 24 hours and 72 hours.
[0088] その後、このフィルムを取り出し、フィルムを剥離し、ブッロキング面積を測定した。 3 . 5mm X 3. 5mmを 1コマとして、全体で 100コマ中、何コマ、ブロッキングしている 力によって、 A〜Dのランクを設けた。ブロッキングが 0. 5コマ未満の場合をランク Aと 、 0. 5〜 10未満をランク Bと、 10〜50%未満をランク Cと、 50%未満をランク Dと、ラ ンク分けした。  Thereafter, this film was taken out, the film was peeled off, and the blocking area was measured. A: A to D were set according to the blocking force of several frames in a total of 100 frames, taking 3.5 mm x 3.5 mm as one frame. If the blocking is less than 0.5, rank A, rank B less than 0.5 to 10, rank C less than 10 to 50%, and rank D less than 50%.
[0089] このうち、ランク Aであれば、使用できるが、ランク Bは巻き取り条件や、保存条件の 制約を受ける不具合を生じる。そして、ランク C及びランク Dは使用が困難である。 [0090] 以上、図 4の表より、易接着性フィルムの評価 (ヘイズ)、製品の接着性評価 (テープ 剥離試験）、及び、易接着フィルムのブロッキング試験の評価結果を比較する。 [0089] Among these, Rank A can be used, but Rank B suffers from the restriction of winding conditions and storage conditions. And rank C and rank D are difficult to use. From the table of FIG. 4, the evaluation results of the evaluation (the haze) of the easily adhesive film, the evaluation of the adhesiveness of the product (tape peeling test) and the blocking test of the easily adhesive film are compared.
[0091] ヘイズについては、比較例 6が 1. 5%と低かったのを除けば、対応する各実施例と 比較例にお!ヽて大差はな ヽ。 Regarding the haze, except that Comparative Example 6 was as low as 1.5%, the corresponding Examples and Comparative Examples had no significant difference.
[0092] テープ剥離試験につ!、ては、各実施例と比較例の!、ずれも、プリズム層の剥離が 全く生じな力つた〇であり、各実施例と比較例において差はない。 In the tape peeling test! And in the examples and comparative examples, the deviation and the deviation of the prism layer are not generated at all, and there is no difference between the examples and comparative examples.
[0093] ブロッキング試験につ!、ては、実施例は!、ずれの条件にお!、ても Aであった。これ に対し、比較例はいずれの条件においても B、 C又は Dであり、明らかに劣っている。 [0093] For the blocking test!, For example, the example was! On the other hand, the comparative example is B, C or D under any conditions and is clearly inferior.
[0094] 以上の総合評価により、本実施例の優れた効果が確認された。 From the above comprehensive evaluation, the excellent effects of the present example were confirmed.

Claims

請求の範囲 The scope of the claims
[1] 支持体の表面に塗設された易接着層が水系ウレタン榭脂とカルポジイミド系架橋剤 を含有してなり、前記支持体の裏面に形成されたバック層の最上層がポリオレフイン 層であることを特徴とする光学シート用易接着性フィルム。  [1] The easy-adhesion layer coated on the surface of the support contains a water-based urethane resin and a carpodiimide crosslinking agent, and the uppermost layer of the back layer formed on the back of the support is a polyolefin layer. An easily adhesive film for an optical sheet, characterized in that
[2] 支持体の表面に塗設された易接着層が水系ウレタン榭脂とエポキシ架橋剤を含有 してなり、前記支持体の裏面に形成されたバック層の最上層がポリオレフイン層であ ることを特徴とする光学シート用易接着性フィルム。  [2] The easy-adhesion layer coated on the surface of the support contains a water-based urethane resin and an epoxy crosslinking agent, and the uppermost layer of the back layer formed on the back of the support is a polyolefin layer. An easily adhesive film for an optical sheet, characterized in that
[3] 支持体の表面に塗設された易接着層がスチレン ブタジエン共重合体、及びジク ロロ トリアリン誘導体又はカルポジイミド系架橋剤を含有してなり、前記支持体 の裏面に形成されたバック層の最上層がポリオレフイン層であることを特徴とする光 学シート用易接着性フィルム。  [3] The easy-adhesion layer coated on the surface of the support comprises a styrene butadiene copolymer, and a dichloro trialine derivative or a carbodiimide-based crosslinking agent, and the back layer formed on the back of the support An easily adhesive film for an optical sheet, wherein the uppermost layer is a polyolefin layer.
[4] 前記支持体がポリエステルフィルムであり、前記バック層がアクリルラテックスと酸ィ匕 スズを含有する第 1層と、該第 1層の上に形成されたポリオレフイン層である第 2層と を備えている請求項 1〜3のいずれか 1項に記載の光学シート用易接着性フィルム。 [4] The support is a polyester film, and the back layer is a first layer containing an acrylic latex and tin oxide, and a second layer which is a polyolefin layer formed on the first layer The easily-adhesive film for optical sheets of any one of Claims 1-3 provided.
[5] 前記支持体がポリエステルフィルムであり、前記バック層が導電性ポリマーを含有 する第 1層と、該第 1層の上に形成されたポリオレフイン層である第 2層とを備えている 請求項 1〜3のいずれか 1項に記載の光学シート用易接着性フィルム。 [5] The support is a polyester film, and the back layer comprises a first layer containing a conductive polymer, and a second layer which is a polyolefin layer formed on the first layer. An easily adhesive film for an optical sheet according to any one of Items 1 to 3.
[6] 前記支持体がポリエチレンテレフタレートである請求項 1〜5のいずれか 1項に記載 の光学シート用易接着性フィルム。 [6] The easily adhesive film for an optical sheet according to any one of claims 1 to 5, wherein the support is polyethylene terephthalate.
[7] 前記易接着層上に光学機能層が形成されている請求項 1〜6のいずれか 1項に記 載の光学シート用易接着性フィルム。 [7] The easily adhesive film for an optical sheet according to any one of claims 1 to 6, wherein an optical functional layer is formed on the easily adhesive layer.
[8] 前記光学機能層が紫外線硬化榭脂からなるプリズム層である請求項 7に記載の光 学シート用易接着性フィルム。 [8] The easily adhesive film for an optical sheet according to claim 7, wherein the optical function layer is a prism layer made of an ultraviolet curing resin.
[9] 支持体の表面に易接着層を塗設する工程と、 [9] A step of applying an easily adhesive layer on the surface of a support,
前記支持体の裏面に最上層がポリオレフイン層であるバック層を塗設する工程と、 前記易接着層及びバック層が塗設された前記支持体を乾燥する工程と、 乾燥後の前記支持体を巻き取る工程と、  Coating a back layer, the uppermost layer of which is a polyolefin layer, on the back surface of the support, drying the support on which the easily adhesive layer and the back layer are coated, and drying the support Winding process,
巻き取られた前記支持体の前記易接着層上に光学機能層を形成する工程と、 を備えることを特徴とする光学シート用易接着性フィルムの製造方法。 Forming an optical functional layer on the easily adhesive layer of the wound support; A method for producing an easily adhesive film for an optical sheet, comprising:
前記光学機能層が紫外線硬化榭脂からなるプリズム層である請求項 9に記載の光 学シート用易接着性フィルムの製造方法。  The method for producing an easily adhering film for an optical sheet according to claim 9, wherein the optical function layer is a prism layer made of an ultraviolet curing resin.
PCT/JP2007/050475 2006-02-01 2007-01-16 Easy-adhesion film for optical sheet and method for manufacturing the same WO2007088721A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-024850 2006-02-01
JP2006024850A JP2007203593A (en) 2006-02-01 2006-02-01 Easy adhesion film for optical sheet, and its manufacturing method

Publications (1)

Publication Number Publication Date
WO2007088721A1 true WO2007088721A1 (en) 2007-08-09

Family

ID=38327301

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/050475 WO2007088721A1 (en) 2006-02-01 2007-01-16 Easy-adhesion film for optical sheet and method for manufacturing the same

Country Status (4)

Country Link
JP (1) JP2007203593A (en)
KR (1) KR20080090437A (en)
CN (1) CN101374654A (en)
WO (1) WO2007088721A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013146801A1 (en) * 2012-03-27 2013-10-03 日本ペイント株式会社 Curable resin composition for forming adhesive layer, and method for integrating base and base to be bonded

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101516030B1 (en) * 2007-08-09 2015-05-04 데이진 듀폰 필름 가부시키가이샤 Polyester film for brightness enhancement sheet
JP5063421B2 (en) * 2008-03-13 2012-10-31 ユニチカ株式会社 Film for semiconductor manufacturing process
KR101124581B1 (en) * 2009-01-19 2012-03-15 에스케이씨 주식회사 Optical polyester film having good adhesion property
JP5585359B2 (en) * 2010-09-30 2014-09-10 日本ゼオン株式会社 Optical laminate and surface light source device
JP5832128B2 (en) * 2011-04-18 2015-12-16 株式会社トクヤマ Photochromic lens
JP5783657B2 (en) * 2012-12-22 2015-09-24 三菱樹脂株式会社 Laminated polyester film

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858661B2 (en) * 1975-11-27 1983-12-26 富士写真フイルム株式会社 Shashin Zairiyou
JPH11123869A (en) * 1997-10-23 1999-05-11 Gunze Ltd Sheet for printing with water-based ink
JPH11221892A (en) * 1998-02-06 1999-08-17 Fuji Photo Film Co Ltd Low heat shrinkage polyester film and low heat shrinkage thermal developing photosensitive material
JPH11286092A (en) * 1998-04-02 1999-10-19 Toray Ind Inc Laminated polyester film and manufacture thereof
JP2000029165A (en) * 1998-07-10 2000-01-28 Fuji Photo Film Co Ltd Low heat shrinking film and heat developable photographic sensitive material using that film as supporting body
JP2001341241A (en) * 2000-06-06 2001-12-11 Toray Ind Inc Laiminated film and method for preparing the same
JP2002079635A (en) * 2000-09-05 2002-03-19 Toray Ind Inc Laminated polyester film and method for manufacturing the same
JP2002316387A (en) * 2001-04-19 2002-10-29 Fuji Photo Film Co Ltd Cellulose acylate film and its production method
JP2003131344A (en) * 2002-07-15 2003-05-09 Fuji Photo Film Co Ltd Method for manufacturing photosensitive material supporting body made of low heat-shrinkage film and method for manufacturing heat developable photographic sensitive material
JP2004195775A (en) * 2002-12-18 2004-07-15 Toray Ind Inc Polyester film
JP2004315563A (en) * 2003-04-11 2004-11-11 Mitsubishi Polyester Film Copp Biaxially oriented polyester film

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858661B2 (en) * 1975-11-27 1983-12-26 富士写真フイルム株式会社 Shashin Zairiyou
JPH11123869A (en) * 1997-10-23 1999-05-11 Gunze Ltd Sheet for printing with water-based ink
JPH11221892A (en) * 1998-02-06 1999-08-17 Fuji Photo Film Co Ltd Low heat shrinkage polyester film and low heat shrinkage thermal developing photosensitive material
JPH11286092A (en) * 1998-04-02 1999-10-19 Toray Ind Inc Laminated polyester film and manufacture thereof
JP2000029165A (en) * 1998-07-10 2000-01-28 Fuji Photo Film Co Ltd Low heat shrinking film and heat developable photographic sensitive material using that film as supporting body
JP2001341241A (en) * 2000-06-06 2001-12-11 Toray Ind Inc Laiminated film and method for preparing the same
JP2002079635A (en) * 2000-09-05 2002-03-19 Toray Ind Inc Laminated polyester film and method for manufacturing the same
JP2002316387A (en) * 2001-04-19 2002-10-29 Fuji Photo Film Co Ltd Cellulose acylate film and its production method
JP2003131344A (en) * 2002-07-15 2003-05-09 Fuji Photo Film Co Ltd Method for manufacturing photosensitive material supporting body made of low heat-shrinkage film and method for manufacturing heat developable photographic sensitive material
JP2004195775A (en) * 2002-12-18 2004-07-15 Toray Ind Inc Polyester film
JP2004315563A (en) * 2003-04-11 2004-11-11 Mitsubishi Polyester Film Copp Biaxially oriented polyester film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013146801A1 (en) * 2012-03-27 2013-10-03 日本ペイント株式会社 Curable resin composition for forming adhesive layer, and method for integrating base and base to be bonded

Also Published As

Publication number Publication date
KR20080090437A (en) 2008-10-08
JP2007203593A (en) 2007-08-16
CN101374654A (en) 2009-02-25

Similar Documents

Publication Publication Date Title
JP5223196B2 (en) Polyester laminated film and transfer foil
WO2007088721A1 (en) Easy-adhesion film for optical sheet and method for manufacturing the same
WO2010143551A1 (en) Laminated polyester film
WO2011135994A1 (en) Laminated polyester film
JP5520138B2 (en) Laminated polyester film
JP5424987B2 (en) Laminated polyester film
WO2011001971A1 (en) Laminated polyester film
JP2006007550A (en) Double-side mold release film
JP5536379B2 (en) Laminated polyester film
WO2022059580A1 (en) Cavity-containing polyester film
JP5700439B2 (en) Substrate-less double-sided adhesive sheet
JP2007260983A (en) Optical sheet and method for producing adhesive layer
JP5937358B2 (en) Release film
JP2005343055A (en) Decorative film for glass
JP2014223736A (en) Easily adhesive laminated film for active energy ray-curable adhesive
JP2013136208A (en) Mold release film
JP2012161966A (en) Resin film, and illumination cover
JP2013022831A (en) Easy adhesive film and method of manufacturing the same
JP5489971B2 (en) Laminated polyester film
JP3936260B2 (en) Multilayer resin sheet
JP5489972B2 (en) Laminated polyester film
JP2012162075A (en) Laminated polyester film
JP2013022887A (en) Polyester film for insert molding
JPH10100354A (en) Surface treated plastic film
JP4186570B2 (en) Laminated polyester film

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1020087017815

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 200780003802.6

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07706802

Country of ref document: EP

Kind code of ref document: A1