WO2005052056A1 - 艶消しフィルム - Google Patents
艶消しフィルム Download PDFInfo
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- WO2005052056A1 WO2005052056A1 PCT/JP2004/017410 JP2004017410W WO2005052056A1 WO 2005052056 A1 WO2005052056 A1 WO 2005052056A1 JP 2004017410 W JP2004017410 W JP 2004017410W WO 2005052056 A1 WO2005052056 A1 WO 2005052056A1
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- WIPO (PCT)
- Prior art keywords
- film
- weight
- sheet
- polylactic acid
- resin
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- 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
- B32B27/10—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 paper or cardboard
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- 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
- B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
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- 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
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/06—Vegetal particles
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/408—Matt, dull surface
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/716—Degradable
- B32B2307/7163—Biodegradable
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
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- 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
- B32B2410/00—Agriculture-related articles
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- 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
- B32B2439/00—Containers; Receptacles
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- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
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- 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
- B32B2601/00—Upholstery
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- 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
- B32B2607/00—Walls, panels
- B32B2607/02—Wall papers, wall coverings
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- 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
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
- C08L3/06—Esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
- C08L3/08—Ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/02—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to polysaccharides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
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- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/254—Polymeric or resinous material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2973—Particular cross section
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/298—Physical dimension
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
Definitions
- the present invention relates to a polylactic acid-based resin film or sheet having good film-forming stability and excellent in mattness. Furthermore, matte-type heat-shrinkable or heat-nonshrinkable films or sheets and packaging materials obtained by laminating these with other materials, agricultural materials such as growing houses and multi-films, Wallpapers, screens, upholstery, daily necessities, envelopes, file cases, cover products and other school supplies, stationery, notebooks, paper products and paper containers, textiles, textiles For products etc.
- Patent Document 1 Japanese Patent No. 3172559 discloses an ethylene-vinyl alcohol-based copolymer containing 1% by weight or more of an inorganic filler and having a gloss of 60% or less.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-207244 discloses that a gloss containing 35% or less and a haze of 80% containing 1% by weight or more of inert particles such as inorganic or organic particles having a specific particle size.
- Patent Document 3 Japanese Patent No. 3175306 discloses an matte polypropylene film having a gloss of 30% or less and a haze of 18% or less. I have.
- Polylactic acid-based resin is a polycondensate of lactic acid having an optically active center, and is calculated by the following formula from the composition ratio of L-lactic acid and Z or D-lactic acid monomer units constituting the polymer. Optical purity (OP: unit%).
- Those with a high optical purity of 80% or more have the property of being crystalline, and those with a low optical purity of less than 80% have the property of being amorphous, and have a higher haze (ASTM-D1003- 95 according to ASTM-D2457-70: 45 degrees) and tensile modulus (according to ASTM-D882-95a) of about 2-5 GPa.
- the glass transition temperature Tg is about 60 ° C, which is particularly high compared to other biodegradable resins, making it brittle at room temperature (23 ° C). Yes, it has inferior matte properties.
- Polylactic acid-based resins have poor impact resistance required during transportation of packages due to their inherent brittleness.
- Polylactic acid-based resins have disadvantages, and therefore have a low glass transition temperature Tg, which is excellent in impact resistance.
- Tg glass transition temperature
- V attempts to improve impact resistance by mixing biodegradable polyester (10 ° C or less) have been made, but no attempt has been made to improve the mattness.
- V ⁇ ⁇ biodegradable polyester refers to an aliphatic polyester obtained by polycondensation of an aliphatic dicarboxylic acid and an aliphatic diol as main components, an aliphatic polyester obtained by ring-opening polymerization of cyclic ratatone, and a synthetic aliphatic polyester.
- Patent Document 4 For a polylactic acid-based stretched film or sheet composed of a polylactic acid-based resin mainly composed of a mixture of a polylactic acid-based resin and a biodegradable polyester having a glass transition temperature Tg of 0 ° C or less, see Patent Document 4 (Patent Document 4). No. 3138196), all of which have improved impact resistance, but cannot be said to have achieved a practical level of glazing. There is a title.
- a polylactic acid-based stretched film and sheet composed of a polylactic acid-based resin mainly composed of a mixture of a polylactic acid-based resin and inert particles is disclosed in, for example, Patent Document 5 (Japanese Patent Application Laid-Open No. 2001-49003). ), A stretched polylactic acid film containing 20% by weight of calcium carbonate with an average particle diameter of 0.6 ⁇ m or 15% by weight of polystyrene resin and 5% by weight of titanium oxide (V, 20% by weight as inert particles). Thus, it is disclosed that a white opaque film can be obtained. However, simply adding inorganic particles or organic particles cannot provide a film with good mattability, and Patent Document 5 does not disclose improvement in mattness. That is, a film or sheet having a good matting property using a polylactic acid-based resin has not been obtained so far.
- Patent Document 6 Japanese Patent Application Laid-Open No. 8-502552
- Patent Document 6 7 Japanese Patent No. 2742892
- Patent Document 8 Japanese Patent No. 3008071
- Patent Document 9 Japanese Patent No. 3055001
- Patent Document 10 Japanese Patent No. 3154056
- Patent Document 11 Japanese Patent No. No.
- 2,939,586 discloses a biodegradable solution containing a polylactic acid-based resin mainly composed of at least one starch derivative selected from the group consisting of starch ester, starch ether, and polyester-grafted starch (50% by weight or more).
- a biodegradable film comprising a chemically modified starch-based biodegradable resin, which is a mixture with polyester, is disclosed.
- the second resin when the second resin is blended with the resin which is a main component, the second resin is in a non-uniform mixed state and the resulting blend is opaque. .
- a film or sheet formed from such a blended resin may have some matteness, but it will be brittle. It is often difficult to obtain a stable film or sheet from strong resin, and it is often difficult to obtain a particularly thin film.
- Patent Document 1 Patent No. 3172559
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-200724
- Patent Document 3 Japanese Patent No. 3175306
- Patent Document 4 Patent No. 3138196
- Patent Document 5 Japanese Patent Application Laid-Open No. 2001-49003
- Patent Document 6 Japanese Patent Publication No. Hei 8-502552
- Patent Document 7 Patent No. 2742892
- Patent Document 8 Patent No. 3008071
- Patent Document 9 Patent No. 3055001
- Patent Document 10 Japanese Patent No. 3154056
- Patent Document 11 Patent No. 2939586
- An object of the present invention is to provide a polylactic acid-based resin film or sheet having good film-forming stability and excellent mattness.
- Polylactic acid-based resin has a glass transition temperature Tg of around 60 ° C, is a hard resin in a glassy state at room temperature, and the resulting film or sheet has a surface glossiness (Gloss: 45 ° C) as it is. Is higher than 100%, it has been difficult with the prior art to make this a film or sheet having excellent glossiness.
- the present inventors have conducted intensive studies in order to solve the above-mentioned problems, and as a result, a polylactic acid-based resin composition containing particles, which is a film or sheet having a specific surface glossiness
- the present invention was found to provide a polylactic acid-based resin film or sheet having good film-forming stability and excellent anti-glare properties, and completed the present invention.
- the present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a polylactic acid-based resin (A), a chemically modified starch (B) and a plasticizer (C) in a specific ratio are mixed. Good film formation The present inventors have found that a film or a sheet having stability and mattness can be obtained, and completed the present invention. Second, by mixing a biodegradable starch and a plasticizer in a polylactic acid-based resin at a specific ratio, and dispersing the poorly dispersible starch uniformly, it is possible to obtain a good glossiness without spots. At the same time, it was more difficult with the prior art to achieve both film-forming stability.
- the inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, it has been found that a polylactic acid-based resin (and a starch (E) and a plasticizer (C) in a specific ratio are preferably used as a mixture.
- the present inventors have found that a film or sheet having film forming stability and mattness can be obtained, and completed the present invention.
- the present invention was found to provide a film or sheet having good film-forming stability and antiglare property, thereby completing the present invention.
- the inorganic filler is mixed with the polylactic acid-based resin at a specific ratio, and the inorganic filler with poor dispersibility is evenly dispersed. Compatibility was even more difficult with the prior art.
- the inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, it has been found that a good film formation can be achieved by using a mixture containing a polylactic acid-based resin (A) and an inorganic filler (F) at a specific ratio. The inventors have found that a film or a sheet having stability and mattness can be obtained, and completed the present invention.
- the present invention is as follows.
- a film or sheet comprising a polylactic acid-based resin composition containing particulate matter
- the particulate matter is chemically modified starch (B), polylactic acid-based resin (A) 55-97% by weight, chemically modified starch (B) 2-30% by weight, and plasticizer (C) 1-15% by weight. % Of the mixture, the single-layer matte film or sheet according to 1).
- Chemically modified starch (B) is a starch ester, starch ether, and polyester graft
- the matte film or sheet according to 2) which is a starch derivative mixture containing at least one starch derivative (b) selected from the group consisting of combined starch in an amount of 40% by weight or more.
- the polylactic acid-based resin (A) forms a matrix
- the chemically modified starch (B) forms a domain, forming a microphase-separated structure, and is cut in the width direction of the film or sheet.
- the cross section referred to as TD cross section
- the matte film or sheet according to any one of 4) to 4).
- the plasticizer (C) is selected from the group consisting of an aliphatic carboxylic acid having 7 or less carbon atoms, an aliphatic hydroxycarboxylic acid having 7 or less carbon atoms, and an aliphatic alcohol having 7 or less carbon atoms.
- Multi-layered matte film or sheet wherein the matte film or sheet according to any one of 7) to 7) is laminated such that at least one outer surface has a surface gloss of 60% or less. Sheet.
- the particulate matter is starch (E), polylactic acid-based resin (A) 45-97.5% by weight, starch (E) 2 40% by weight, and plasticizer (C) 0.5-15% by weight %.
- the single-layer matte film or sheet according to 1) which comprises a mixture of 1% by weight.
- the plasticizer (C) is a plasticizer mixture containing 10 to 90% by weight of an aliphatic polyhydric alcohol having 2 or more hydroxyl groups in the molecule and having 10 or less carbon atoms.
- the matte film or sheet according to any one of 9) and 10 which is a feature. 12) Further, 5% by weight of the fine particle polymer (D) having an average particle diameter of 10 ⁇ m or less is added to the polylactic acid-based resin (A), starch (E) and plasticizer (C) in a total of 100% by weight.
- a fine particle polymer which comprises a mixture of 70-99% by weight of a polylactic acid-based resin (A) and 1-30% by weight of a fine particle polymer (D).
- the particulate matter is a fine particle polymer (D), and polylactic acid resin (A) 55-99% by weight, fine particle polymer (D) 1-30% by weight and plasticizer (C) 15% by weight or less
- the single-layer matte film or sheet according to 1) which comprises a mixture containing the same.
- the plasticizer (C) is an ester synthesized from a combination of two or more selected from the group consisting of aliphatic carboxylic acids, aliphatic hydroxycarboxylic acids, and aliphatic alcohols. ) -1 The matte film or sheet according to any one of 16).
- a multilayered matte film wherein the matte film or sheet according to any one of 17) is laminated such that a surface having a surface gloss of 60% or less is at least one outer surface, or Sheet.
- the particulate matter is an inorganic filler (F), including a mixture of polylactic acid-based resin (A) 70-99.5% by weight and inorganic filler (F) 0.5-30% by weight.
- the particulate matter is an inorganic filler (F), polylactic acid-based resin (A) 55-99.5% by weight, inorganic filler (F) 0.5-30% by weight, and plasticizer (C) Single-layer matte film or sheet according to 1), comprising a mixture containing 15% by weight or less of
- the plasticizer (C) is an ester synthesized from a combination of two or more selected from the group consisting of aliphatic carboxylic acids, aliphatic hydroxycarboxylic acids, and aliphatic alcohols. 21. The matte film or sheet according to any one of 21).
- the fine particle polymer (D) having an average particle size of 10 ⁇ m or less is added to the polylactic acid-based resin (A), the inorganic filler (F) and the plasticizer (C) in a total of 100% by weight.
- the above method comprising obtaining an opaque film or sheet by peeling off the resin layer.
- a packaging material comprising the matte film or sheet according to any one of 1) to 24).
- a cloth, textile, or tablecloth obtained by laminating the matte film or sheet according to any one of 1) to 24) on the surface.
- the matte film or sheet of the present invention comprises, first, a polylactic acid-based resin, a chemically modified starch and a plasticizer, and the main components of the polylactic acid-based resin and the chemically modified starch are biodegradable. Since there is no residue due to inert particles at the time of biodegradation or waste combustion when discarded after use, it is also advantageous in terms of protecting the natural environment and has good film formation stability. Or used by laminating with other materials.
- the matte film or sheet of the present invention is composed of polylactic acid-based resin, starch and a plasticizer, and the main components, polylactic acid-based resin and starch, have biodegradability. Since there is no residue due to inert particles at the time of biodegradation or waste combustion at the time of disposal, it is advantageous from the viewpoint of protection of the natural environment and has good film formation stability. Used by lamination.
- the matte film or sheet of the present invention is used because the polylactic acid-based resin and the fine-particle polymer and the plasticizer power as required, and the main component polylactic acid-based resin have biodegradability. Since there is no residue due to inert particles at the time of waste combustion when discarding later, it is advantageous from the viewpoint of natural environmental protection and has good film formation stability, and can be used alone or laminated with other materials Used as
- the matte film or sheet of the present invention is formed of a polylactic acid-based resin and an inorganic filler and, if necessary, a plasticizer, and the polylactic acid-based resin as a main component has biodegradability.
- the polylactic acid-based resin When discarded after use, it is advantageous in terms of protecting the natural environment, has good film formation stability, and can be used alone or as a laminate with other materials.
- the glossy film or sheet of the present invention has the effect of imparting glossiness to packaging materials and agricultural materials, as well as wallpapers, screens, upholstery, daily necessities, school supplies, stationery, notebooks, It has the effect of suppressing gloss and giving it a calm and high-grade appearance to paper products and paper containers, cloth products, textile products, tablecloths, etc., and has the effect of imparting dirt prevention and waterproofing functions.
- the matte film or sheet of the present invention which has polylactic acid-based resin, chemically modified starch and plasticizer power, will be described.
- This matte film or sheet mainly comprises a mixture of a polylactic acid-based resin (A), a chemically modified starch (B), and a plasticizer (C), which are finally decomposed by microorganisms.
- the weight ratio (total 100%) of the mixture of the polylactic acid resin (A), the chemically modified starch (B) and the plasticizer (C) is The lactic acid-based resin (A) must be within the range of 55-97% by weight, the chemically modified starch (B) must be within the range of 2-30% by weight, and the plasticizer (C) must be within the range of 1-115% by weight.
- the polylactic acid-based resin (A) is in the range of 63 to 94% by weight, the chemically modified starch (B) is in the range of 425% by weight, and the plasticizer (C) is in the range of 2 to 12% by weight.
- the polylactic acid-based resin (A) is in the range of 67-89% by weight, the chemically modified starch (B) is in the range of 8-22% by weight, and the plasticizer (C) is in the range of 3-11% by weight.
- the polylactic acid-based resin (A) is in the range of 70 to 86% by weight, the chemically modified starch (B) is in the range of 910% by weight, and the plasticizer (C) is in the range of 410% by weight.
- the proportion of the polylactic acid-based resin (A) is less than 55% by weight, the mechanical properties of the resulting film or sheet are inferior, and the film or sheet tends to become brittle and the film forming stability tends to decrease. If it exceeds the above range, a composition in which the content of the chemically modified starch (B) is in the range of 2 to 30% by weight and the content of the plasticizer (C) is in the range of 115% by weight cannot be obtained. If the chemically modified starch (B) is less than 2% by weight, the matte is inferior, and the film has a surface gloss (gloss: 45 °) measured in accordance with ASTM-D2457-70 of more than 60%.
- the film becomes brittle and tends to be unable to form a stable film.
- the plasticizer (C) is less than 1% by weight, the flexibility of the film or sheet is reduced, and the film or sheet may follow the unevenness when producing a laminated product having unevenness such as embossing. However, there is a tendency that the transferability of the unevenness is deteriorated, the adhesion to the base material is deteriorated, and the mattness is deteriorated. If the amount of the plasticizer (C) exceeds 15% by weight, the surface of the film or sheet is excessively softened, so that the film or sheet after film formation tends to cause blocking.
- the polylactic acid-based resin (A) used in the present invention is a polylactic acid homopolymer and a copolymer containing 50% by weight or more of a lactic acid monomer unit, and is a polylactic acid homopolymer, Or milk A co-polymer of the acid with other hydroxycarboxylic acids and ratatone.
- a polylactic acid homopolymer and copolymers containing 80% by weight or more of lactic acid monomer units or a mixture of these copolymers More preferably, polylactic acid homopolymers and lactic acid monomer units are 90% by weight. It is a copolymer containing more than 1% by weight or a mixture of these copolymers.
- Lactic acid contains L-lactic acid and D-lactic acid as optical isomers.
- Polylactic acid formed by polymerizing them contains about 10% or less of D-lactic acid units and about 90% or more of L-lactic acid units, or L-lactic acid units. Is about 10% or less and the D-lactic acid unit is about 90% or more.
- the polylactic acid-based resin (A) used in the present invention is particularly preferably a crystalline polylactic acid having an optical purity of 85% or more alone, or a crystalline polylactic acid having an optical purity of 85% or more and an optical purity of 80% or less. It is a mixture consisting of amorphous polylactic acid.
- hydroxycarboxylic acid grayed recall acid, 3-hydroxy butyric acid, 4-hydroxybutyric acid, 3-hydroxyvaleric acid, 4-hydroxy valeric acid, and 6-hydroxy turnip Ron acid like
- examples of the aliphatic cyclic ester include glycolide, lactide, j8-propiate ratatone, ⁇ -butyrolataton, ⁇ -nore ratatone, ⁇ -force prolataton, and ratatones in which various groups such as a methyl group are substituted. .
- dicarboxylic acids examples include succinic acid, glutaric acid, adipic acid, azelaic acid, sebacic acid, terephthalic acid, and isophthalic acid.
- polyhydric alcohols include aromatic polyhydric alcohols such as bisphenol-ethylenoxide addition products.
- Ethylene glycol propylene glycolone, butanediole, hexanediole, octanediole, glycerin, aliphatic polyhydric alcohols such as sorbitan, trimethylolpropane, neopentyl glycol, diethylene glycol, triethylene glycol, polyethylene glycol, poly (ethylene glycol) Ether glycols such as propylene glycol;
- the polymerization method of the polylactic acid-based resin (II) known methods such as a condensation polymerization method and a ring-opening polymerization method can be employed.
- polyisocyanates, polyepoxy compounds, acid anhydrides It is also possible to use a method of increasing the molecular weight by using a binder such as a salt of acid salt.
- the weight average molecular weight of the polylactic acid-based resin (A) is preferably in the range of 10,000 to 1,000,000. If the molecular weight is less than 10,000, the mechanical properties of the film tend to be insufficient, and if it exceeds 1,000,000, the melt viscosity increases, and it is difficult to obtain a finolem with stable physical properties using ordinary processing machines. .
- the chemically modified starch (B) used in the present invention includes at least one starch derivative (b) selected from the group consisting of broken starch, starch ester, starch ether, and polyester-grafted starch.
- Preferred is a starch derivative mixture containing at least 60% by weight or more of at least one starch derivative (b) selected from the group consisting of starch ester, starch ether, and polyester graft polymerized starch.
- Particularly preferred is starch ester. , Starch ether, and polyester graft polymerized starch.
- the chemically modified starch (B) is easier to disperse in the polylactic acid-based resin (A) than the unmodified starch (E), so that a film having uniform matting properties and film forming stability can be obtained.
- a film obtained by mixing it with the polylactic acid-based resin (A) is excellent in antifouling properties and is preferred.
- the purpose is to improve the extrusion processability and moldability of the starch derivative (b), and the physical properties such as strength, elongation, and flexibility of the obtained molded article.
- the resin mixed with the starch derivative (b) for the purpose of improving the resin is not particularly limited, but a thermoplastic resin is preferred in terms of improving the extrudability of the starch derivative (b).
- a thermoplastic resin is preferred in terms of improving the extrudability of the starch derivative (b).
- resins having a glass transition temperature Tg of 10 ° C or less are preferred, and polylactic acid-based resins (A) and starches (b) are not used in terms of effective use of biodegradability.
- Degradable resins are preferred.
- a more preferable resin which is mixed with the starch derivative (b) to form a starch derivative mixture is a biodegradable polyester (d) having a glass transition temperature Tg of 10 ° C. or less.
- the starch derivative (b) is composed of amylose (linear polymer) and amido vectin (branched polymer).
- amylose linear polymer
- amido vectin branched polymer
- a mixture of various types of starch molecular formula (CHO)), such as corn starch,
- Disintegrated starch is a substance that undergoes endothermic transition under heat treatment at a high temperature of about 80-210 ° C in the presence of various plasticizers or water and under shearing conditions, causing the starch granules to become disordered. ⁇ ⁇ ⁇ This is obtained.
- starch esters, starch ethers, or polyester graft polymerized starches were prepared using broken starch, various acid anhydrides, organic acids, acid chlorides, ketene, or other esterified ether ethereal reagents.
- the starch esters include highly substituted esterified starch, esterified vinyl ester graft polymerized starch, and esterified polyester graft polymerized starch
- the starch ethers include highly substituted etherified starch and ethery starch.
- vinyl ether ester graft polymerized starch and ethereal polyester grafted starch which are thermoplastic.
- starch derivative (b) used in the present invention are, for example, saturated and unsaturated fatty acids such as disclosed in JP-A-8-507101 and Japanese Patent No. 3154056.
- the hydrogen of the reactive hydroxyl group on the starch molecule is substituted with a hydrocarbon group having 2 to 24 carbon atoms (such as an acyl group, an alkyl group, a cycloalkyl group, an alkylene group, or an aryl group) using an aromatic carboxylic acid (ester -Substituted esterified starch having a degree of substitution of 0.4-2.5DS; saturated / unsaturated fatty acids having 2-18 carbon atoms as disclosed in JP-T-8-507101
- polybutyl esters are grafted together with the esterification with aromatic carboxylic acids and aromatic carboxylic acids, and the degree of esterification substitution is 0.1-2.8 DS and the grafting ratio is 50% by weight or less.
- Patent No. 274 As disclosed in Japanese Patent Publication No. 2892, the saturated hydroxyl group having 2 to 18 carbon atoms is esterified with unsaturated fatty acids and aromatic carboxylic acids, and the terminal hydroxyl group of the ratatone ring-opening polymer having 4 to 12 ring members is almost ester-blocked. Esterified polyester-grafted starch having a degree of substitution of 0.1 to 3.0 MS and a degree of substitution of grafted molecules of 0.1 to 20 MS obtained by grafting of the obtained polyester. It is said that the extrudability is relatively good.
- the MS value is a value represented by the formula ⁇ (weight of grafted rattan rattan) Z molecular weight of rattan Z (weight of starch charged Z molecular weight of starch) ⁇ .
- the glass transition temperature Tg of the starch derivative (b) used in the present invention is preferably 100 to 170 ° C, more preferably 110 to 150 ° C, and particularly preferably 115 to 140 ° C. Range. If the glass transition temperature Tg of the starch derivative (b) used is less than 100 ° C, the matting effect tends to decrease. If the glass transition temperature Tg exceeds 170 ° C, the extrudability decreases, and the starch derivative (b) has There is a tendency that a good film cannot be obtained due to a rapid increase in the hygroscopicity.
- the biodegradable polyester (d) having a glass transition temperature Tg of 10 ° C. or lower which is preferably used in the present invention, refers to an aliphatic polyester which is polycondensed with an aliphatic dicarboxylic acid and an aliphatic diol as main components, and a cyclic polyester.
- Aliphatic polyesters obtained by ring-opening polymerization of amides, synthetic aliphatic polyesters, aliphatic polyesters such as poly (hydroxyalkanoic acid) biosynthesized in cells, and some of these biodegradable polyesters It is at least one member selected from the group consisting of aliphatic aromatic polyesters having a structure substituted with an aromatic compound within a range not degrading, and is determined by differential scanning calorimetry (CFIS-K 7121).
- a glass composition having a glass transition temperature Tg of preferably 10 ° C. or lower, more preferably 0 ° C. or lower, still more preferably 20 ° C. or lower. If the Tg of the biodegradable polyester (d) exceeds 10 ° C, the effect of improving the flexibility and processability of the obtained film may not be exhibited.
- Aliphatic polyesters obtained by polycondensation of an aliphatic dicarboxylic acid and an aliphatic diol as main components include succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, and dodecane diacid.
- Carboxylic acid To the extent that biodegradability is not impaired, terephthalic acid
- Aromatic carboxylic acids such as isophthalic acid, etc.
- ethylene glycol 1,3-propion glycol, 1,4-butanediol, 1,4-cyclohexene
- aliphatic polyester obtained by ring-opening polymerization of cyclic ratatatons include ring-opening polymers selected from one or more cyclic monomers such as ⁇ -force prolatatone, ⁇ valerolatatone, and -methyl- ⁇ valerolatatotone.
- Synthetic aliphatic polyether examples of the stele include copolymers of succinic anhydride, a cyclic acid anhydride such as ethylene oxide and propylene oxide, and oxysilanes.
- Poly (hydroxyalkanoic acid) biosynthesized in the cells includes poly (3-hydroxybutyric acid), poly (3-hydroxypropionic acid), poly (3-hydroxyvaleric acid), and poly (3-hydroxyvalic acid).
- poly(aliphatic aromatic polyester poly(2-aphthalatephthalate), poly(2-aphthalate), poly(2-aphthalate), and poly(2-aphthalatephthalate), and poly(2-hydroxybutyric acid-3-hydroxydecanoic acid) copolymer.
- Acid phthalic acid copolymer polyethylene succinic acid phthalic acid copolymer, poly
- Phthalic acid copolymer polyethylene adipic acid phthalic acid copolymer, polyethylene glutaric acid terephthalic acid copolymer, polybutylene daltaric acid terephthalic acid copolymer, polybutylene succinic acid adipic acid phthalic acid copolymer, etc.
- the biodegradable polyester (d) having a glass transition temperature Tg of 10 ° C. or less which is particularly preferably used in the present invention, is an aliphatic dicarboxylic acid having 2 to 10 carbon atoms and a carbon number of 2 among the above. It is an aliphatic polyester obtained by polycondensation of 10 to 10 aliphatic diols as main components. Specific examples thereof include polyethylene adipate, polypropylene adipate, polybutylene adipate, polyhexene adipate, polybutylene glutarate, polybutylene succinate, polybutylene succinate adipate and the like.
- Known methods such as a direct method and an indirect method can be adopted as a method for polymerizing the biodegradable polyester (d).
- the direct method for example, a method in which the above dicarboxylic acid conjugate or its anhydride or derivative is selected as the aliphatic dicarboxylic acid component, and the above diol compound or its derivative is selected as the aliphatic diol component to carry out polycondensation.
- a high molecular weight product can be obtained while removing water generated during the polycondensation.
- a small amount of a chain extender such as hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, diphenylenolemethane diisocyanate is added to the oligomer polycondensed by the direct method.
- a chain extender such as hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, diphenylenolemethane diisocyanate.
- the plasticizer (C) used in the present invention can be selected from those commonly used in the art, and those which do not bleed out even when added to the resin composition at about 15% by weight, Substances that are harmless to and safe from are preferred.
- the plasticizer include phthalic acid ester, aliphatic dibasic acid ester, hydroxy polycarboxylic acid ester, polyhydric alcohol ester, fatty acid ester, phosphate ester, epoxy plasticizer and the like.
- More preferable plasticizers include aliphatic dibasic acid esters, hydroxy polycarboxylic acid esters, polyhydric alcohol esters, fatty acid esters, and epoxy plasticizers, and further preferably aliphatic carboxylic acids having 7 or less carbon atoms.
- An aliphatic hydroxycarboxylic acid having 7 or less carbon atoms and an aliphatic alcohol having 7 or less carbon atoms A group having a group strength of 2 or more is an ester which also has a strength, and particularly preferably an aliphatic group having 6 or less carbon atoms.
- phthalates examples include dimethyl phthalate, getyl phthalate, diisobutyl phthalate, dibutyl phthalate, dioctyl phthalate, and the like.
- aliphatic dibasic acids examples include diisodecyl succinate, dioctyl adipate, diisodecyl adipate, dioctyl azelate, dibutyl sebacate, dioctyl sebacate and the like.
- hydroxy polycarboxylic acid ester examples include tributyl acetyl citrate, tri-2-ethylhexyl acetyl citrate, tributyl quenate and the like.
- polyhydric alcohol esters examples include glycerin triacetate, glycerin tributyrate, acetylated monoglyceride-based plasticizer, diethylene glycol dibenzoate, dipentaerythritol hexaester, and pentaerythritol ester.
- fatty acid esters include butyl oleate, methyl acetyl ricinoleate, methyl chlorinated fatty acids, and ether esters of adipic acid.
- phosphate ester examples include trioctyl phosphate, tricloethyl phosphate and the like.
- epoxy plasticizers include epoxidized soybean oil, epoxidized linseed oil, butyl epoxystearate, octyl epoxystearate and the like.
- the matte film or sheet of the present invention is required to have a glossiness (Gloss: 45 degrees) of at least one surface measured by a gloss meter (ASTM-D2457-70) of 60% or less. More preferably, the film or sheet has a surface gloss (Gloss: 45 degrees) of 30% or less, more preferably 20% or less, particularly preferably 10% or less.
- a film or sheet having a glossiness of more than 60% is a film or sheet having poor glossiness.
- the polylactic acid-based resin (A) forms a matrix and the chemically modified starch (B) forms a domain to form a microphase-separated structure.
- the average value of the cross sectional area of the domains within 20% is counted, even if the larger force is counted.
- a film having a larger force good Ade off property in a film or sheet average value is less than 20000 nm 2 of the cross-sectional area of 20% within the domain counting of cross-sectional area or It is difficult to obtain a sheet.
- the average cross-sectional area of the domain within 20% of the total domain of the chemically modified starch (B) within the entire domain of the chemically modified starch (B) is 20000 nm 2
- the average cross-sectional area can be increased by increasing the Tg of the starch derivative (b) used.
- the plate-like domain includes not only a flat plate-like shape but also a curved plate-like domain, a three-dimensionally twisted curved plate-like domain, and a partially bent shape thereof. It also includes curved rod-shaped domains that are not straight lines, three-dimensionally twisted curved rod-shaped domains, and those in which these rod-shaped domains are partially bent.
- the matte film or sheet of the present invention comprises a fine particle polymer (D) having an average particle size of 10 ⁇ m or less, and a polylactic acid-based resin (A), a chemically modified starch (B), and a plasticizer (C) in a total weight of 100%. %,
- the content is preferably not less than 0.05% by weight and not more than 5% by weight.
- the addition of the fine particle polymer is preferable because the performance such as hydrophobicity and water repellency of the film or sheet can be improved, and the surface hardness of the film or sheet can be improved.
- it is a fine particle polymer having an average particle size of 5 m or less, and is composed of silicone resin, silicone rubber, polytetrafluoroethylene (PTFE) resin, styrene resin, dibutylbenzene resin, polyacetal resin, and acetal resin. It contains at least one fine particle polymer selected from the group consisting of krill resin, cellulose acetate resin, phenol resin, melamine resin, epoxy resin, and nylon resin.
- PTFE polytetrafluoroethylene
- a fine particle polymer having an average particle diameter of 5 m or less such as silicone resin, silicone rubber, polytetrafluoroethylene (PTFE) resin, styrene resin, dibutylbenzene resin, polyacetal resin, A group consisting of acrylic resin and cellulose acetate resin. At least one selected fine particle polymer is included. If the average particle size of the fine particle polymer exceeds 10 m, defects will occur in the thin film, and the film forming stability tends to decrease.
- the content of the fine particle polymer (D) is polylactic acid-based resin (A), chemically modified starch (B) and If the amount is less than 0.05% by weight with respect to the total of 100% by weight of the plasticizer (C), the effect of the fine particle polymer (D) is not obtained, and if it exceeds 5% by weight, the polylactic acid-based resin (A), The compatibility of the modified starch (B) and the plasticizer (C) with the resin blend, which also has the power, also tends to cause aggregation of the fine particle polymer (D).
- the raw resin used for the matte film or sheet of the present invention is a recycled raw material that is processed again into pellets or finely divided trim scraps and the like generated during the resin film formation in addition to the virgin raw material described above. Can be used alone or mixed with the virgin raw material.
- the matte film or sheet of the present invention which has polylactic acid-based resin, starch and plasticizer power, will be described.
- the matte film or sheet of the present invention is mainly composed of a mixture of a polylactic acid-based resin (A), a starch (E), and a plasticizer (C) which are finally decomposed by microorganisms.
- the weight ratio of the mixture of polylactic acid-based resin (A), starch (E) and plasticizer (C) (100% in total) is ⁇
- the resin (A) must be in the range of 45-97.5% by weight, starch) S2-40% by weight, and the plasticizer (C) must be in the range of 0.5-15% by weight.
- the polylactic acid-based resin (A) is in the range of 53 to 95% by weight
- the starch is in the range of 413% by weight
- the plasticizer (C) is in the range of 112% by weight.
- Particularly preferred is a polylactic acid-based resin.
- (A) is in the range of 65-86% by weight
- starch (E) is in the range of 9-125% by weight
- plasticizer (C) is in the range of 411-10% by weight.
- the proportion of the polylactic acid-based resin (A) is less than 45% by weight, the mechanical properties of the obtained film or sheet are inferior, the film or sheet tends to become brittle, and the film-forming stability tends to decrease. If the amount exceeds the above range, a composition having a starch (E) content of 2 to 40% by weight and a plasticizer (C) content of 0.5 to 15% by weight cannot be obtained.
- the content of starch is less than 2% by weight, the antiglare property is inferior, and the film has a surface glossiness (Daros: 45 °) of more than 60% as measured according to ASTM-D2457-70, and the starch) has a weight of 40% by weight. %, The film tends to be brittle and cannot be stably formed.
- the amount of the plasticizer (C) is less than 0.5% by weight, the dispersibility of the starch (E) in the polylactic acid-based resin (A) deteriorates, and a uniform film having good film formation stability can be obtained.
- the starch (E) used in the present invention is produced by the photosynthetic reaction of green plants, as described on pages 40-43 of the Plant Metabolic Engineering Handbook published by NTS Corporation. Is one of the biomass produced. It is a substance stored in tissues of many plants, such as seeds, roots and tubers, and is widely distributed in the plant kingdom, especially grains such as rice, wheat, corn, and potatoes such as potatoes, sweet potatoes, and cassava. It is a substance that is accumulated in large quantities in storage tissues of a kind and has been a food source for many animals, including humans, since ancient times.
- Starch includes many types of starch (molecular formula (CHO)), which is a mixture of amylose (linear polymer) and amido vectin (branched polymer), such as corn starch, potato starch, tapioca Starch, rice starch
- CHO molecular formula
- the plasticizer (C) used in the present invention can be selected from those commonly used in the art, and those which do not bleed out even when added to the resin composition at about 15% by weight, and which are suitable for humans. Harmless and safe substances are preferred.
- the plasticizer include phthalic acid ester, aliphatic dibasic acid ester, hydroxy polycarboxylic acid ester, polyhydric alcohol ester, fatty acid ester, phosphoric acid ester, epoxy plasticizer, aliphatic polyhydric alcohol, etc. . More preferred plasticizers are aliphatic dibasic acid esters, hydroxy polycarboxylic acid esters, polyhydric alcohol esters, fatty acid esters, epoxy plasticizers, and aliphatic polyhydric alcohols.
- phthalate esters include dimethyl phthalate, getyl phthalate, diisobutyl phthalate, dibutyl phthalate, and dioctyl phthalate. and so on.
- aliphatic dibasic acids examples include diisodecyl succinate, dioctyl adipate, diisodecyl adipate, dioctyl azelate, dibutyl sebacate, dioctyl sebacate and the like.
- hydroxy polycarboxylic acid ester examples include tributyl acetyl citrate, tri-2-ethylhexyl acetyl citrate, tributyl quenate and the like.
- polyhydric alcohol esters examples include glycerin triacetate, glycerin tributyrate, acetylated monoglyceride plasticizer, diethylene glycol dibenzoate, dipentaerythritol hexaester, and pentaerythritol ester.
- fatty acid esters examples include butyl oleate, methyl acetyl ricinoleate, methyl chlorinated fatty acids, and ether esters of adipic acid.
- phosphate ester examples include trioctyl phosphate, tricloethyl phosphate and the like.
- epoxy plasticizers include epoxidized soybean oil, epoxidized linseed oil, butyl epoxystearate, octyl epoxystearate and the like.
- aliphatic polyhydric alcohol examples include polyhydric alcohols having two hydroxyl groups in the molecule, such as ethylene glycol, propylene glycol, and butanediol, and polyhydric alcohols having three or more hydroxyl groups in the molecule.
- polyhydric alcohols having two hydroxyl groups in the molecule such as ethylene glycol, propylene glycol, and butanediol
- polyhydric alcohols having three or more hydroxyl groups in the molecule examples include polyhydric alcohols having three or more hydroxyl groups in the molecule.
- glycerin pentaerythritol, sorbitol, trimethylolpropane and the like, glycerin is particularly preferred.
- the matte film or sheet of the present invention is required to have a glossiness (Gloss: 45 degrees) of at least one surface measured by a gloss meter (ASTM-D2457-70) of 60% or less.
- the film or sheet has a surface gloss (Gloss: 45 degrees) of 30% or less, more preferably 20% or less, particularly preferably 10% or less.
- a film or sheet having a glossiness of more than 60% is a film or sheet having poor glossiness.
- the polylactic acid-based resin (A) It is preferable to adopt a microphase-separated structure in which starch forms a domain. More preferably, in a cross section cut in the width direction of the film or sheet (referred to as a TD cross section), within the entire domain of the starch (E), a cross-sectional area within 20% of the domain having a large cross-sectional area is counted. Preferably, the average value of the area is 20000 nm 2 or more.
- the average value of the cross-sectional area of the domains within 20% of the domains having a large cross-sectional area is 30,000 nm 2 or more, and particularly preferably the starch (E) of the total of the domain, it is the average force OOOOn m 2 or more at a film or sheet of the cross-sectional area of 20% within the domain counted from the larger cross-sectional area.
- the entire domains of the starch (E) a film or sheet having a good matting effect in a film or sheet in which the average value of the cross-sectional area of domains within 20% is less than 20000 nm 2 by counting the force having a large cross-sectional area It is hard to obtain.
- the average value of the cross-sectional area of the larger force is also counted within 20% of the domains of the cross-sectional area to 20000 nm 2 or more, starch (E
- the plasticizer (C) to be used is preferably selected from plasticizers having good compatibility with starch, although it is not limited because it changes depending on the structure and composition of the above.
- a polylactic acid-based resin (A) is formed by forming a spherical, rod-like, or plate-like domain in a matrix (Ma), which has a strong force, in starch (E). It is a thing.
- the spherical domain includes an ellipsoidal domain in which a sphere consisting of only a true sphere is elongated.
- the plate-like domain includes not only a flat plate-like shape but also a curved plate-like domain, a three-dimensionally twisted curved plate-like domain, and a shape in which these are partially bent.
- the rod-shaped domain includes a curved rod-shaped domain that can be formed only by a straight line, a three-dimensionally twisted curved rod-shaped domain, and a rod-shaped domain in which these rod-shaped domains are partially bent.
- the addition of the fine particle polymer is preferable because the performance such as hydrophobicity and water repellency of the film or sheet can be improved, and the surface hardness of the film or sheet can be improved. More preferably, the fine particles having an average particle size of 5 m or less are used.
- Particulate polymer consisting of resin, styrene resin, dibutylbenzene resin, polyacetal resin, acrylic resin, cellulose acetate resin, phenol resin, melamine resin, epoxy resin and nylon resin. At least one species. Particularly preferably, it is a fine particle polymer having an average particle diameter of 5 ⁇ m or less, such as silicone resin, silicone rubber, polytetrafluoroethylene (PTFE) resin, styrene resin, dibutylbenzene resin, polyacetal resin, It contains at least one kind of fine particle polymer selected from the group consisting of acrylic resin and cellulose acetate resin.
- PTFE polytetrafluoroethylene
- the average particle size of the fine particle polymer exceeds 10 ⁇ m, defects will occur in the thin film, and the film forming stability tends to decrease. If the content of the fine particle polymer (D) is less than 0.05% by weight relative to the total of 100% by weight of the polylactic acid-based resin (A), starch (E) and plasticizer (C), the fine particle polymer (D) If the addition effect is not obtained, and if the content exceeds 5% by weight, polylactic acid-based resin (A), starch (E) and plasticizer (C) are used. D) tends to cause aggregation.
- the raw resin used for the matte film or sheet of the present invention is a recycled raw material that is processed again into pellets or finely divided trim scraps and the like generated during the resin film formation in addition to the virgin raw material described above. Can be used alone or mixed with the virgin raw material.
- the matte film or sheet of the present invention which has polylactic acid-based resin and fine particle polymer power, will be described.
- the matte film or sheet of the present invention is mainly composed of a mixture containing a polylactic acid-based resin (A) which is finally decomposed by microorganisms and a fine particle polymer (D).
- A polylactic acid-based resin
- D fine particle polymer
- the polylactic acid-based resin (A) is in the range of 55 to 98.9% by weight, the fine particle polymer (D) is in the range of 110 to 30% by weight, and the plasticizer (C) is in the range of 0.1 to 15% by weight. More preferably, the polylactic acid-based resin (A) is in the range of 63 to 96.5% by weight, the fine particle polymer (D) is in the range of 3 to 25% by weight, and the plasticizer (C) is in the range of 0.5 to 12% by weight. And more preferably 67 to 95% by weight of a polylactic acid-based resin (A), (D) is in the range of 5 to 22% by weight, and the plasticizer (C) is in the range of 11 to 11% by weight.
- the polylactic acid-based resin (A) is in the range of 70 to 91% by weight, and the fine particle polymer (D ) Is within the range of 7-20% by weight, and the plasticizer (C) is within the range of 2-10% by weight.
- the proportion of the polylactic acid-based resin (A) is less than 70% by weight, the mechanical properties of the resulting film or sheet are inferior, the film or sheet tends to be brittle, and the film-forming stability tends to decrease, and exceeds 99% by weight.
- a composition in which the content of the fine particle polymer (D) is in the range of 1 to 30% by weight cannot be obtained.
- the content of the fine particle polymer (D) is less than 1% by weight, the matting property is poor, and the film has a surface glossiness (Daros: 45 °) measured in accordance with ASTM-D2457-70 of more than 60%.
- (D) exceeds 30% by weight, the film becomes brittle and tends to be unable to form a film stably, and the flexibility of the film or sheet is reduced, thereby producing a laminated product having irregularities such as embossed tape. In this case, the film or sheet does not follow the unevenness, and the transferability of the unevenness tends to be poor, and the adhesion to the substrate tends to be poor.
- the plasticizer (C) exceeds 15% by weight, the surface of the film or sheet is excessively softened, so that the film or sheet after film formation tends to cause blocking.
- the polylactic acid-based resin (A) used in the present invention is as described above.
- the fine particle polymer (D) used in the present invention includes synthetic polymers, natural polymers, and encapsulants as described on pages 257-259 of “Advanced Technology of Ultrafine Particle Polymers” issued by CMC Corporation. It is a fine particle polymer such as a dangling powder or a composite powder, and specific examples thereof include the fine particle polymer described in pp. 283-294, Chapter 6, List of Fine Particle Polymer Products.
- styrene resin dibutylbenzene resin, phenol resin, silicone rubber, silicone resin, low-density polyethylene, high-density polyethylene, ethylene Z-acrylic acid resin, methyl methacrylate HMMA) resin, polytetraethylene Fluoroethylene (PTFE) resin, bilidene fluoride resin, urethane resin, cellulose acetate resin, cellulose, styrene / acrylic resin, benzoguanamine resin, benzoguanamine Z melamine resin, melamine resin , N-butyl acrylate resin, urea resin, nylon resin, polyacetal resin, polyphenylene ether resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, and other engineering resins, Polyetheretherketone (PEEK) resin, polyarylate resin, polyether Sulfone It is a fine particle polymer obtained from resins such as resin and polyetherimide resin.
- PEEK Polyetheretherket
- the fine particle polymer (E) used in the present invention preferably includes any of 1) a glass transition temperature Tg of 60 ° C or higher, or 2) a melting point Tm of 100 ° C or higher, or 3) a crosslinked polymer. It is a fine particle polymer composed of a resin satisfying at least one, and more preferably 1) a glass transition temperature Tg of 80 ° C or more, or 2) a melting point Tm of 120 ° C or more, or 3) a glass transition temperature. It is a fine particle polymer made of a resin that satisfies at least one of the polymers crosslinked at a Tg of 60 ° C or higher.
- silicone resin polytetrafluoroethylene (PTFE) resin
- polyacetal resin acrylic resin, cellulose acetate resin, phenol resin, melamine resin, benzoguanamine resin, benzoguanamine Z melamine resin.
- Epoxy resin nylon resin A fine particle polymer consisting of selected resins.
- the fine particle polymer (D) used in the present invention preferably has an average particle size of 10 ⁇ m or less. More preferably, the average particle size is 7 m or less, further preferably, the average particle size is 5 ⁇ m or less, and particularly preferably, the average particle size is 0.1 to 3 ⁇ m.
- the average particle size of the fine particle polymer is measured using a laser diffraction Z-scattering particle size distribution analyzer.
- the plasticizer (C) used in the present invention can be selected from those commonly used in the art, and those which do not bleed out even when added to the resin composition at about 15% by weight, and those which do not affect the human body. Harmless and safe substances are preferred.
- the plasticizer include phthalic acid ester, aliphatic dibasic acid ester, hydroxy polycarboxylic acid ester, polyhydric alcohol ester, fatty acid ester, phosphate ester, epoxy plasticizer and the like.
- More preferred plasticizers are aliphatic dibasic acid esters, hydroxy polycarboxylic acid esters, polyhydric alcohol esters, fatty acid esters, and epoxy-based plasticizers, and more preferably an aliphatic carboxylic acid having 7 or less carbon atoms and a carbonic acid.
- a group consisting of an aliphatic hydroxycarboxylic acid having a number of 7 or less and an aliphatic alcohol having a carbon number of 7 or less is an ester having a combination of two or more, and particularly preferably an aliphatic having 6 or less carbon atoms.
- Carboxylic acid and aliphatic hydroxycarboxylic acid having 6 or less carbon atoms and aliphatic alcohol having 6 or less carbon atoms It is an ester made of a combination of two or more selected.
- the matte film or sheet of the present invention is required to have a glossiness (Gloss: 45 degrees) of at least one surface measured by a gloss meter (ASTM-D2457-70) of 60% or less. More preferably, the film or sheet has a surface gloss (Gloss: 45 degrees) of 30% or less, more preferably 20% or less, particularly preferably 10% or less.
- a film or sheet having a glossiness of more than 60% is a film or sheet having poor glossiness.
- the raw resin used for the matte film or sheet of the present invention is a recycled raw material that is processed again into pellets or finely divided trim scraps and the like generated during the resin film formation in addition to the virgin raw material described above. Can be used alone or mixed with the virgin raw material.
- the matte film or sheet of the present invention which is capable of acting as a polylactic acid-based resin and an inorganic filler, will be described.
- the matte film or sheet of the present invention is mainly composed of a mixture containing a polylactic acid-based resin (A) which is finally decomposed by microorganisms and an inorganic filler (F).
- the weight ratio (100% in total) of the mixture of the polylactic acid-based resin (A) and the inorganic filler (F) should be adjusted to the polylactic acid-based resin (A). 70 to 99.5% by weight, and inorganic fiber (B) within 0.5 to 30% by weight.
- the polylactic acid ⁇ (A) is 55 - 99.4 wt 0/0
- the inorganic filler (F) is 0.
- a plasticizer (C) is 0.1 one 15 weight %, More preferably 63 to 98.9% by weight of the polylactic acid-based resin (A), 125% by weight of the inorganic filler (F), and 0.1 to 25% by weight of the plasticizer (C).
- the content is within the range of 12% by weight, and more preferably, the polylactic acid-based resin (A) is 71-96.9% by weight, the inorganic filler (F) is S3-18% by weight, and the plasticizer (C) is 0.1%.
- the polylactic acid-based resin (A) is preferably in the range of 1 to 11% by weight, particularly preferably 74 to 92% by weight of the polylactic acid-based resin (A), 6 to 16% by weight of the inorganic filler (F), and the plasticizer (C). It is in the range of 10% by weight. If the proportion of the polylactic acid-based resin (A) is less than 70% by weight, the mechanical properties of the resulting film or sheet are inferior, the film or sheet tends to be brittle, and the film-forming stability tends to decrease. If it exceeds the above range, the composition of the inorganic filler (F) within the range of 0.5 to 30% by weight cannot be obtained.
- the matte When the amount of the inorganic filler (F) is less than 0.5% by weight, the matte is inferior, and the film has a surface gloss (Gloss: 45 degrees) measured in accordance with ASTM-D2457-70 of more than 60%. If the machine filler (F) exceeds 30% by weight, the film becomes brittle and the film tends to be unable to be formed stably, and the flexibility of the film or sheet is reduced, and the unevenness of the embossed film or the like is reduced. When a product is produced, the film or sheet does not follow the irregularities, so that the irregularity transferability tends to be poor, and the adhesion to the substrate tends to be poor. When the amount of the plasticizer (C) exceeds 15% by weight, the surface of the film or sheet is excessively softened, so that the formed film or sheet is liable to cause blocking.
- the polylactic acid-based resin (A) used in the present invention is as described above.
- the inorganic filler (F) used in the present invention is an inorganic filler as described on page 30-31 of Resin Z Filer Type Kneading Technology published by Technical Information Association, Inc. Oxides, carbonates, sulfates, silicates, nitrides, carbons, and other inorganic fillers.
- oxidized products include silica, diatomaceous earth, alumina, zinc oxide, titanium oxide, oxidized calcium, magnesium oxide, iron oxide, tin oxide, oxidized antimony, and ferrites.
- hydroxide examples include calcium hydroxide, magnesium hydroxide, aluminum hydroxide, and basic magnesium.
- Examples of the carbonate include calcium carbonate, magnesium carbonate, zinc carbonate, barium carbonate, dawsonite, and hydrated talcite.
- sulfate examples include calcium sulfate, barium sulfate, and gypsum fiber.
- silicate examples include calcium silicate (wollastonite, zonotolite), talc, clay, myriki, montmorillonite, bentonite, activated clay, sepiolite, imogolite, sericite, glass fiber, glass bead, and silica-based balun. .
- nitride examples include aluminum nitride, boron nitride, and silicon nitride.
- Examples of carbons include carbon black, graphite, carbon fiber, carbon balun, and charcoal powder.
- the inorganic filler (F) used in the present invention is preferably a plate-like, spherical, or granular filler.
- the plate-like filler include talc, my strength, sericite, glass flake, plate-like calcium carbonate, plate-like aluminum hydroxide, and hydrated talcite.
- the spherical and granular fillers include calcium carbonate, silica, clay, various ore pulverized products, various beads, various balloons, tetrapot type zinc oxide, and the like. More preferred are talc, calcium carbonate, clay, silica, myriki, sericite, titanium oxide and the like. Particularly preferred are talc, myric, calcium carbonate, silica and the like.
- the inorganic filler (F) used in the present invention preferably has an average particle size of 10 m or less. More preferably, the average particle size is 7 m or less, and still more preferably, the average particle size is 5 m or less and 0.1 ⁇ m or more.
- an inorganic filler having an average particle size of more than 10 ⁇ m is used, when a thin film having a thickness of 20 m or less is used, defects are generated, and the film is liable to be broken or a hole is formed. is there.
- the average particle size of the inorganic filler is measured using a laser diffraction Z-scattering particle size distribution analyzer.
- the plasticizer (C) used in the present invention can be selected from those commonly used in the art, and those that do not bleed out even when added to the resin composition at about 15% by weight, Substances that are harmless to and safe from are preferred.
- the plasticizer include phthalic acid ester, aliphatic dibasic acid ester, hydroxy polycarboxylic acid ester, polyhydric alcohol ester, fatty acid ester, phosphate ester, epoxy plasticizer and the like. More preferable plasticizers include aliphatic dibasic acid esters, hydroxy polycarboxylic acid esters, polyhydric alcohol esters, fatty acid esters, and epoxy plasticizers, and further preferably aliphatic carboxylic acids having 7 or less carbon atoms.
- An aliphatic hydroxycarboxylic acid having 7 or less carbon atoms and an aliphatic alcohol having 7 or less carbon atoms A group having a group strength of 2 or more is an ester which also has a strength, and particularly preferably an aliphatic group having 6 or less carbon atoms.
- the matte film or sheet of the present invention is required to have a glossiness (Gloss: 45 degrees) of at least one surface measured by a gloss meter (ASTM-D2457-70) of 60% or less. More preferably, a film or sheet having a surface gloss (Gloss: 45 degrees) of 30% or less is used. And more preferably at most 20%, particularly preferably at most 10%.
- a film or sheet having a glossiness of more than 60% is a film or sheet having poor glossiness.
- the matte film or sheet of the present invention comprises a fine particle polymer (D) having an average particle size of 10 ⁇ m or less, a polylactic acid-based resin (A), an inorganic filler (F) and a plasticizer (C). It is preferable that the content is not less than 0.03% by weight and not more than 5% by weight based on 100% by weight.
- the addition of the fine particle polymer is preferable since the performance such as hydrophobicity, water repellency, and slipperiness of the film or sheet can be improved, and the surface hardness of the film or sheet can be improved.
- it is a fine particle polymer having an average particle diameter of 5 ⁇ m or less, such as silicone resin, silicone rubber, polytetrafluoroethylene (PTFE) resin, styrene resin, dibutylbenzene resin, and polyacetal resin.
- silicone resin silicone rubber
- PTFE polytetrafluoroethylene
- styrene resin polystyrene resin
- dibutylbenzene resin polyacetal resin
- At least one fine particle polymer selected from the group consisting of acrylic resin, cellulose acetate resin, phenol resin, melamine resin, epoxy resin and nylon resin. Particularly preferred are fine particle polymers having an average particle diameter of 5 / zm or less, such as silicone resin, silicone rubber, polytetrafluoroethylene (PTFE) resin, styrene resin, dibutylbenzene resin, polyacetal resin, and acrylic resin. It contains at least one kind of fine particle polymer selected from the group consisting of resin and cellulose acetate resin. If the average particle size of the fine particle polymer exceeds 10 m, defects tend to occur in the thin film and the film forming stability tends to decrease.
- PTFE polytetrafluoroethylene
- the fine particle polymer (D) If the content of the fine particle polymer (D) is less than 0.03% by weight relative to the total of 100% by weight of the polylactic acid-based resin (A), the inorganic filler (F) and the plasticizer (C), the fine particle polymer (D) If the addition effect is not obtained, and if it exceeds 5% by weight, polylactic acid-based resin (A), inorganic filler (F), and plasticizer (C) are also compatible. D) tends to cause aggregation.
- the raw resin used for the matte film or sheet of the present invention is a recycled raw material that is processed again into pellets or finely divided trim scraps and the like generated during the resin film formation in addition to the virgin raw material described above. Can be used alone or mixed with the virgin raw material.
- the mixing method and the mixing device for E), the inorganic filler (F) and the like are not particularly limited.
- the respective raw materials are supplied to the same single-screw or twin-screw extrusion kneader, melt-mixed, extruded from a die (die lip) as is, and directly processed into a film or sheet, or extruded into a strand shape. After the pellets are prepared, they may be extruded again and caloed on a film or sheet.
- the melt extrusion temperature is preferably in a temperature range of 100 to 250 ° C., which is appropriately selected in consideration of the melting point and mixing ratio of the polylactic acid-based resin.
- the temperature of the die during extrusion is preferably as low as possible within the moldable range, since there is a tendency that the mattness becomes better.
- a particularly preferred range of the die temperature is 150 to 170 ° C.
- Matrix is formed when the chemically modified starch (B), fine particle polymer (D), starch (E), or polylactic acid-based resin (A) containing inorganic filler (F) is melted and drawn by die force.
- the chemically modified starch (B), the fine particle polymer (D), the starch (E), or the inorganic filler having a higher viscosity than the matrix is used. Since (F) does not cause large flow deformation and retains the shape of granules, rods, plates, etc., the unevenness is formed by forming irregularities on the surface of the film or sheet.
- the selection of the die temperature is important especially when using a modified starch (B) having a large viscosity change around the processing temperature of the polylactic acid-based resin (A).
- the method for forming the matte film or sheet of the present invention includes a method of casting on a T-die cooling roll, a conventionally known film forming method such as an inflation method or a tenter method, and the like. There is a method of simultaneous or sequential biaxial stretching. For details, (1) Extruded tube-shaped or sheet-shaped resin is melted in force. (2) Melting the extruded tubular or sheet resin in the molten state, quenching it, and solidifying it in a state close to the amorphous state.
- a sheet-like resin is reheated to a temperature equal to or higher than the glass transition temperature and equal to or lower than the melting point, and a film is formed by a cold stretching method in which the film is stretched by an inflation method or a roll tenter method.
- a method of obtaining a film or sheet by performing a heat treatment while holding the film or sheet in order to suppress the heat shrinkage of the film or sheet is important in obtaining a matte film.
- the polylactic acid-based resin (A) When the polylactic acid-based resin (A) is in a molten state, it is cast on a smooth chill roll, or when it is rolled with two or more smooth rolls, chemical modification that contributes to the development of mattness
- the smoothness of the starch (B), the fine particle polymer (D), the starch (E), or the inorganic filler (F) from forming irregularities on the surface of the film or sheet due to the smoothness of the roll reduces the glossiness. descend.
- the polylactic acid resin (A) as a matrix comes into contact with a smooth roll in a state close to a molten state.
- the stretching ratio of the film or sheet regardless of the stretching method, at least in one axial direction so that the thickness of the final film or sheet is in the range of 1Z500-1Z40 with respect to the interval between the extrusion die (die lip).
- U which is preferably melt-drawn or cold-drawn.
- a polylactic acid-based resin is used. Extruded in the molten state, and the parison thickness is 1Z2 After melt-stretching in at least one axial direction so that the area ratio becomes 2 to 20 times so that the area becomes 1 to 20 times, the MD (the longitudinal direction of the film) and the TD direction (the film) Cold stretching in the width direction of each die), and finally the die exit force so that the thickness of the stretched film or sheet is in the range of 1Z200x1Z40x the die lip interval.
- the film is stretched in at least one axial direction so that the area ratio is in the range of 40 to 200 times.
- the heat treatment temperature of the film or sheet is preferably about 80 ° C to 160 ° C and the heat treatment time is preferably 2 to 10 seconds. If the strength is below the range, the resulting film may have a high heat shrinkage and become a non-shrinkable film.If the strength exceeds the range, the film may melt and break during heat treatment.
- the thickness of the sheet is preferably 5 to 500 ⁇ m, more preferably 7 to 250 ⁇ m, and still more preferably 10 to 100 ⁇ m.
- the film thickness should be as faithful as possible to reproduce the irregularities. A film having a thickness as small as possible is more preferable, and a film having a thickness of 20 m or less is more preferable, as long as the strength capable of handling the film is maintained and the function of the matte surface film can be maintained.
- the film and the non-adhesive resin are co-extruded using a multilayer die, and then the non-adhesive resin layer is removed.
- the method of obtaining the target film is preferred because non-adhesive resin can improve film formation stability.
- the non-adhesive resin layer may be in contact with only one side or both sides of the matte film or sheet of the present invention.
- the number of non-adhesive resin layers is preferably at least one, and may be two or less.
- solubility parameter values tend to mix when blended with good compatibility, and come into contact when co-extruded during film formation. Easy to adhere to each other!
- SP values solubility parameter values
- the chemical structures (primary structures) and polarities of the resins in the resin layers that come into contact with each other are selected as much as possible, the difference in the solubility parameter will increase, and non-adhesion will occur even when co-extruded during film formation.
- a combination of resin layers that maintain the properties can be selected.
- a biodegradable resin such as polylactic acid has a group having a relatively large polarity such as a carboxyl group mainly having an aliphatic polyester structure in many cases.
- non-polar resins such as polyolefin have a tendency not to adhere to aliphatic polyester resins, and are one of good non-adhesive resins.
- the non-adhesive resin layer is peeled off after the film is formed, so that the target film or sheet is peeled off without deformation.
- the resin non-adhesive to the matte film or sheet of the present invention is not particularly limited as long as it is non-adhesive and excellent in film-forming stability, but is preferably polyethylene or polypropylene. And polyolefin resins.
- the dulling film or sheet of the present invention may optionally contain additives commonly used in the art, such as fillers, antioxidants, heat stabilizers, hydrolysis inhibitors, ultraviolet absorbers, and lubricants.
- additives commonly used in the art such as fillers, antioxidants, heat stabilizers, hydrolysis inhibitors, ultraviolet absorbers, and lubricants.
- an antistatic agent, a flame retardant, a nucleating agent, a cross-linking agent, a coloring agent, an antibacterial agent, an antibacterial agent, and the like can be blended within a range that does not impair the requirements and characteristics of the present invention.
- a filler is a substance generally added in the synthetic resin field for the purpose of improving various properties such as strength and durability.
- Specific examples include, for example, aluminum oxide (alumina), hydrates thereof, calcium hydroxide, magnesium oxide (magnesia), magnesium magnesium, zinc zinc (zinc white), lead Red and white lead sardines, such as red and white, sodium carbonate, sodium hydrogen carbonate, magnesium carbonate, calcium carbonate, basic magnesium carbonate, white carbon, my strength, talc, glass fiber, glass powder, glass beads , Clay, diatomaceous earth, silica, wollastonite, iron oxide, antimony oxide, titanium oxide (lithium), lithobone, pumice powder, aluminum sulfate (eg, gypsum), zirconium silicate, barium carbonate, dolomite, molybdenum disulfide Examples include ribene and iron sand.
- antioxidants p-t-butylhydroxytoluene, p-t-butylhydroxy-so Hindered phenol-based antioxidants such as phenol; heat stabilizers include triphenyl phosphite, trilauryl phosphite, trisnolyl phenol phosphite and the like.
- hydrolysis inhibitor include carbodiimide conjugates and isocyanate conjugates, with carbodiimide compounds being preferred.
- UV absorbers include pt-butylphenol-salicylate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-2'-force ruboxybenzophenone, 2,4,5-trihydroxybutyrophenone, etc.
- a lubricant calcium stearate, zinc stearate, barium stearate, sodium palmitate, etc .; as an antistatic agent, N, N bis (hydroxyethyl) alkylamine, alkylamine, alkylarylsulfonate, alkylsulfonate, etc .; difficult Hexabuta moclododecane, tris (2,3-dichloropropyl propyl) phosphate, penbromophenylaryl ether, etc. as fuels; polyethylene terephthalate, poly-transcyclohexanedimethanol terephthalate, palmitic acid as nucleating agents Bromide, and the like.
- the matte film or sheet of the present invention in addition to the monolayer film or sheet, has at least one outer surface having a surface gloss (Gloss: 45 degrees) of 60% or less. And a multilayer film or sheet having a laminated structure.
- at least one outer surface has the matte film or sheet layer of the present invention, and other layers improve processability such as film formation stability of the film or sheet.
- a multilayer film or sheet having a layer for improving physical properties such as a layer for imparting flexibility or a layer for improving adhesion to another substrate is preferred.
- the matte film or sheet layer of the present invention is provided on at least one outer surface, and the other layers are layers that improve processability such as film formation stability of the film or sheet, and flexibility.
- a layer for improving physical properties such as a layer for imparting water or a layer for improving adhesion to another substrate, is a multilayer film or sheet made of biodegradable resin.
- the matte film or sheet of the present invention may be a single material or a composite material in which different or similar materials are laminated. Furthermore, for the purpose of printing, coating, laminating, and the like, a hydrophilic treatment can be further performed by corona treatment or the like.
- the surface tension at this time is preferably in the range of 40 mNZm to 60 mNZm.
- the film or the film of the present invention may be used to give the packaged product a high-class appearance.
- the following are used as a film for preventing wallpaper stains, which is laminated on the surface of the wallpaper as a film for preventing the stain of the wallpaper, and which does not impair the glossiness of the wallpaper. Use it on the surface of a screen that dislikes stray light, use it on the surface of upholstery such as furniture, furniture, curtains, etc.
- the optical purity (OP: unit%) of the polylactic acid-based resin (A) is calculated by the following formula from the constituent ratios of the constituent L-lactic acid and Z or D-lactic acid monomer units.
- composition ratio of the L-lactic acid and Z or D-lactic acid monomer units constituting the polylactic acid-based resin (A) is determined by the following measurement conditions, after alkali decomposition of the sample with 1N-NaOH and 1N-HC1
- the hydrolyzed sample (liquid) whose concentration was adjusted with distilled water was subjected to high-performance liquid chromatography (HPLC: LC-10A-VP) manufactured by Shimadzu Corporation equipped with an optical isomer separation column, and the UV at 254 nm UV was used.
- the melting point Tm and the glass transition temperature Tg of the resin were measured according to JIS-K7121.
- two samples (two points) in the longitudinal direction (MD) and in the width direction (TD) were used as test specimens from samples that had been conditioned (left at 23 ° C for 1 week) under standard conditions (23 ° C, 65% RH).
- After cutting out about 10 mg each using a differential scanning calorimeter (heat flow type DSC; Perkin-Elmer, DSC-7) manufactured by Perkin-Elmer Co., Ltd.
- the total thickness of the film was measured using a micrometer according to JIS-K7130, and the thickness of each layer was measured by observing the cross section of the multilayer film with a microscope.
- the force with the larger cross section is the average of the cross sectional areas of the domains within 20% of the total.
- TD direction shown in Fig. 1 Three samples were cut out at equal intervals in the width direction (TD direction shown in Fig. 1) from a sample film or sheet that had been conditioned (left at 23 ° C for 1 week) under standard conditions (23 ° C, 65% RH). After that, double staining of osmium tetroxide and ruthenium tetroxide was performed, and after embedding in epoxy resin, an ultra-microtome or LKB2088 was used to cut ultra-thin slices of 0.1 to 1 ⁇ m into the film or The surface shown in FIG. 1 was cut along the TD direction of the sheet and perpendicular to the surface of the film (that is, in the thickness direction) as a TD cross section to obtain a microscopic sample.
- the cross-sectional area of the domain was determined using the Image-Pro Version 4.0 (trade name) of MEDIA CYBERNETICS, and the TD cross-section of the domain of the chemically modified starch (B) in the electron micrograph was determined.
- the average value was obtained by dividing the total cross-sectional area of the TD cross section of the domain by 20 by 20.
- the content of the chemically modified starch (B) increases, as shown in Fig. 8, for example, even if the cross-sectional area of each domain is not large, it is displayed on an electron microscope in a form where the domains are close together and joined.
- the cross-sectional area of each domain was determined by dividing the joined domains at the reasonable boundaries estimated for the contours of the individual domains.
- the average particle size of the fine particle polymer (D) and inorganic filler (F) can be determined from small particle size using LA-910 (trade name), a laser-diffraction Z-scattering particle size distribution analyzer manufactured by Horiba, Ltd. The particle size at which the cumulative frequency becomes 50% was defined as the average particle size.
- the anti-glare property was evaluated as follows from the viewpoint of the illuminability of the packaged object when the package was formed using a film or sheet.
- the stability at the time of film formation was evaluated according to the following criteria.
- a stable film can be formed without any problem.
- a brittle part of the film may be generated and the air inside may escape during the formation of the tubular film.
- a polychlorinated vinyl resin wallpaper and sample film preheated to 170 ° C are heated at 160 ° C (rolls that come into contact with the backing paper) and 30 ° C cold embossed rolls (contact with sample film). Then, the transferability of the embossing roll and the adhesion between the base film (polycarbonate resin) and the sample film were evaluated according to the following criteria.
- aa The most beautiful and embossable with the highest unevenness transferability and good adhesion to the base.
- X A state in which at least one of the unevenness transferability and the adhesion to the base has not reached a practically acceptable level.
- the blocking property was evaluated according to the following criteria.
- AA All of the four evaluations are aa, indicating the best matt film or sheet.
- A Out of the four evaluations, at least one is a and the rest are aa, which are excellent matte films or sheets.
- B Out of the four evaluations, at least one is b, and the rest are aa or a, all of which are good matte films or sheets.
- X Out of the four evaluations, one or more items are X, which are films or sheets that cannot be put to practical use as matte films or sheets.
- the matte film of the present invention which has polylactic acid-based resin, chemically modified starch, and plasticizer power, will be described.
- the polylactic acid-based resin used in the following Examples and Comparative Examples was prepared by controlling the amount of catalyst, polymerization conditions, monomer composition, and the like according to the method described in Examples 1B-7B of Japanese Patent Application Laid-Open No. 4-504731.
- polycrystalline lactic acid (al), (a2) and amorphous polylactic acid (a3) having the weight average molecular weight, optical purity, Tg, and Tm shown in Table 1 obtained by polymerization.
- chemically modified starch (B) esterified starch manufactured by Nippon Cornstarch, Cornpol CP-1, CP-3, CP-5, and CP-7 (all trade names) as starch derivative (b) was used.
- plasticizer As (C) ATBC (tributyl acetyltaenoate) manufactured by Nissei Danigaku Kogyo Co., Ltd.
- Japanese corn starch (A) was used as the crystalline polylactic acid (al) and (a2), the amorphous polylactic acid (a3), and the chemically modified starch (B) in Table 1.
- C plasticizer
- polylactic acid and 25% by weight of chemically modified starch are dry blended, they are melt-blended using a twin screw extruder in the same direction, and polylactic acid compound pellets having a content of 25% of chemically modified starch are obtained. Obtained.
- polylactic acid compound pellets containing 50% by weight of chemically modified starch were obtained from 50% by weight of polylactic acid and 50% by weight of chemically modified starch.
- the plasticizer 1 0 wt 0/0 added to polylactic acid 90 wt% in the same direction twin-screw extruder, mixed to obtain a plasticizer content of 10% polylactic acid compound pellet.
- a cylindrical die with an outer die lip diameter of 110 mm, an inner die lip diameter of 108 mm, and a lip clearance of 1.0 mm was used, and the die temperature was set at 160 ° C. Air was injected into the tube while blowing air at 25 ° C to form bubbles, the resulting film was guided to a pinch roll, and the tube-like film was wound up as two flat films. Next, after the bubble was stabilized, the resin extrusion speed, the amount of air injected into the bubble, and the film winding speed of the pinch roll were finely adjusted to obtain a film having a final thickness of 15 m.
- Table 215 shows the physical property evaluation results of the films obtained in Examples A1 to A39 and Comparative Examples A1 to A5.
- Example A40-A43, Example A49, and Example A51 the first layer (outermost layer) and the third layer (innermost layer) were polylactic acid compound pellets obtained in the same manner as in Examples A1-A39.
- the second layer (intermediate layer) has the composition shown in Table 6.
- polylactic acid compound pellets having a plasticizer content of 10% polylactic acid pellets, Pionore # 3001 (polybutylene succinate adipate, Showa Polymer Co., Ltd.) were obtained in the same manner as in Examples A1 to A39.
- Pellets are dry blended and extruded, and extruded from a three-layer cylindrical die with an outer die lip diameter of 110 mm, an inner die lip diameter of 108 mm and a lip clearance of 1.0 mm at a die temperature of 160 ° C, and the final layer 13 m thick, 2 types, 3 layers It was formed the Lum.
- the first layer (outermost layer) and the third layer (innermost layer) were biaxially oriented with polylactic acid, chemically modified starch, and a plasticizer so as to have the composition shown in Table 6.
- polylactic acid compound pellets having the same composition as the first layer (outermost layer) and third layer (innermost layer) in Table 6, and used as raw material pellets.
- a polylactic acid compound pellet, a polylactic acid pellet, and an ecoflex (10% plasticizer content) obtained in the same manner as in Examples A1 to A39 and having the composition shown in Table 6 were obtained.
- BASF, biodegradable aliphatic aromatic copolyester) pellets were dry-blended and extruded to form a final two-layer, three-layer film with a total thickness of 13 / zm.
- Example A50 the same layer of resin as the first layer and the second layer of Example A49 was used so that the thickness of each layer shown in Table 6 was obtained.
- Table 6 shows the physical property evaluation results of the films obtained in Examples A40 to A51.
- the value of dalos (%) is a value obtained by measuring the surface glossiness and dalos (%) of the first layer side. Evaluation was performed by thermocompression bonding so that the first layer side was exposed to the outer surface, in contact with the polychlorinated vinyl resin wallpaper.
- Table 7 shows the domain of the chemically modified starch (B) in the TD section of the films obtained in Examples Al, A7, A13, A18, A24, A36, and A37, and the TD section of the first layer of Example A49.
- the cross-sectional areas the average value of the cross-sectional areas of the larger ones within 20% of the total domain, and the value of the gross (%) of each film are shown.
- FIGS. 2-8 show electron micrographs of the TD section and the MD section of Examples Al, A18, A24, A36 and A37 among these films. It can be seen that the average value of the TD cross-sectional area of the domain of the chemically modified starch (B) is larger in the film with good glossiness than in the film with poor glossiness.
- Table 8 shows the results of the antifouling test of the films obtained in Examples Al, All, A14, A18, A40-A45 and A48-A50. However, in Example A50, an antifouling test was performed using the surface on the first layer side. It is a component of the film of the present invention that it has excellent antifouling properties.
- silicone resin particles, KMP-590 (trade name) and Suntech LD F-1920 (trade name) as non-adhesive resin were also used as the fine particle polymer (D).
- the first layer (outermost layer of the tubular film) was obtained by melt-blending using a co-directional twin-screw extruder in the same manner as in Example A1-1 A39 so as to have the composition shown in Table 9.
- a master batch of polylactic acid compound pellets and the above-mentioned fine particle polymer (D) dry-blend polylactic acid and Pionore # 3001 or Ecoflex into the second layer (intermediate layer) so that the composition shown in Table 9 is obtained.
- the third layer (the innermost layer of the tubular film) has a low-density resin that is a non-adhesive resin to the second layer resin in Examples A52, A54 and A55.
- the outer die lip diameter was 110 mm
- the inner die lip diameter was 108 mm
- the lip clearance was 1.0 mm.
- Extrusion was performed by setting the die temperature to 160 ° C from the cylindrical die of the layer, and a multilayer film having a predetermined thickness was formed.
- the low-density polyethylene layer which was a non-adhesive resin layer was peeled off from the other two layers to obtain a target film, and the physical properties were evaluated using the film. .
- Comparative Example A6 in order to directly obtain a film having the same composition, the same layer configuration, and the same thickness as the film of Example A55 after removing the non-adhesive resin layer, the film was manufactured in the same manner as in Examples A52 to A56.
- the outer die lip diameter is 110 mm
- the inner die lip diameter is 108 mm
- the lip clearance is 1.0 mm.
- Extrusion was performed with the die temperature set to 160 ° C, and an attempt was made to obtain a 10 ⁇ m-thick film consisting of two types and two layers.However, continuous film could not be obtained due to reduced film-forming stability. Was evaluated for physical properties.
- Table 9 shows the physical property evaluation results of the films thus obtained.
- dalos % is a value obtained by measuring the surface glossiness and dalos (%) of the first layer, and the glossiness is also evaluated on the first layer side.
- the third layer was in close contact with the polyvinyl chloride resin resin wallpaper
- the second layer was in close contact with the polyvinyl chloride resin wallpaper. Then, it was evaluated by thermocompression bonding so that the first layer side was exposed to the outer surface.
- Table 10 shows the results of the antifouling test of the films obtained in Examples A52 to A56. However, in Examples A52 to A56, an antifouling test was performed using the surface on the first layer side. It turns out that the film of the present invention is also a film excellent in antifouling properties. Further, it can be seen that the films of Examples A53, A54, and A56 containing the fine particles polymer of silicone resin are more excellent in antifouling properties than the films of Examples A52 and A55 not containing the same.
- Crystalline polylactic acid (a2) 240,000 4.0% 92 «5 ° C 158 ° C
- Amorphous polylactic acid (a3) 250,000 13.0% 74% 54 ° C None
- ATBC tributyl acetylquenate
- Example # 1 Example A2 Example A3 Example A4 Example A5 Example A6 Example A7 Example AB Example A9 Example A10 Raw material composition (% by weight)
- Example M2 Example A13 Example A14 Example A15 Example A16 Example A17 Example A18 Example A19 Example A20 Example A £ 1 Example A £ 2 Raw material composition (% by weight)
- Example A23 Example A24 Example A25 Example A26 Example A27 Example A28 Example A29 Example A30 Example A31 Example A32 Example A33 Raw material composition (weight
- Mouth 1 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Corn pole Tg (° c) 122 120 120 125 127 127 169 130 130 130 130 130 Surface gloss (gloss:%) 7 29 19 8 6 5 5 17 6 37 5 Erasability aa ba aa aa aa aa a c aa Film-forming stability aa aaaaaaaaa bbb aaaaaaaaa c
- Crystalline polylactic acid (a 1) 13.5 70 36 36 30 30 20 Crystalline polylactic acid (a2) 61 75.5 64 36 36 80 35 71 50 36 Amorphous polylactic acid (a3) 15 16 9 9 20 9 20 10 10 CP CP 3 9 23 10 9 1 10 32 CP CP 5 20 15
- Mouth S 1 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100
- the polylactic acid-based resin used in the following Examples and Comparative Examples was prepared by controlling the amount of catalyst, polymerization conditions, monomer composition, and the like according to the method described in Examples of Japanese Patent Publication No. Hei 4-504731.
- the polymer has the weight average molecular weight, optical purity and Tg Tm shown in Table 11 Crystalline polylactic acid (al), (a2) and amorphous polylactic acid (a3).
- starch (E) corn starch manufactured by Nippon Corn Starch Co., Ltd., and a wheat starch “Hama no Yuki” (trade name), which is newly emerging, were used.
- the plasticizer (C) glycerin manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.
- Examples B1-B8 and Comparative Examples B1-B4 corn starch and wheat starch as crystalline polylactic acid (al), (a2), amorphous polylactic acid (a3), and starch (E) in Table 11, Using glycerin, ATBC, Liquemar PL-019 and fine particle polymer (D) as the plasticizer (C), a raw material pellet compounded as follows was obtained. That is, polylactic acid (A), starch (E), plasticizer (C), and fine particle polymer (D) were melt-blended using a bidirectional twin-screw extruder so that the composition shown in Table 12 was obtained. A lactic acid compound pellet was obtained.
- the polylactic acid compound pellets thus obtained were melt-extruded with a single screw extruder, extruded using a cylindrical single-layer die, and formed into a film.
- a cylindrical die with an outer die lip diameter of 110 mm, an inner die lip diameter of 108 mm, and a lip clearance of 1.0 mm was used.
- the die temperature was set at 160 ° C and a cooling ring was formed on the molten resin extruded into a tube. Air was injected into the tube while blowing air at about 25 ° C to form bubbles. The resulting film was guided to a pinch roll, and the tube-like film was wound as two flat films. Next, after the bubble was stabilized, the resin extrusion speed, the amount of air injected into the bubble, and the film winding speed of the pinch roll were finely adjusted to obtain a film having a final thickness of 15 m.
- Table 12 shows the physical property evaluation results of the films obtained in Examples B1 to B8 and Comparative Examples B1 to B4.
- Example B9-B13 and Comparative Example B5 are examples of the films obtained in Examples B1 to B8 and Comparative Examples B1 to B4.
- Example B9 to B13 the first layer (outermost layer of the tubular film) was melted using a co-directional twin screw extruder in the same manner as in Examples B1 to B8 so that the composition shown in Table 13 was obtained.
- polylactic acid compound pellets obtained by melt-blending dry blending of polylactic acid and Pionore # 3001 or Ecoflex into the second layer (intermediate layer) to achieve the composition shown in Table 13.
- the third layer used the same polylactic acid resin compound as the first layer in Example B9, Ecocoflex in Example B10, and Examples B11 and B11.
- low-density polyethylene Suntech LDF-1920 which is a non-adhesive resin
- the outer die lip diameter is 110 mm
- the inner die lip diameter is 108 mm
- Lip clearance 1.0 was formed extrusion
- a multilayer film of predetermined thickness set from the cylindrical die Li 3 Layers die temperature of 160 ° C.
- the low-density polyethylene layer which was a non-adhesive resin layer, was peeled off from the other two layers to obtain a target film, and the physical properties were evaluated using the film. .
- Comparative Example B5 in order to directly obtain a film having the same composition, the same layer configuration, and the same thickness as the film after removing the non-adhesive resin layer of the film of Example B11, the same as Examples B9-B13
- the raw materials for the first and second layers were prepared so that the composition shown in Table 13 was obtained, and a two-layer cylinder with an outer die lip diameter of 110 mm, an inner die lip diameter of 108 mm, and a lip clearance of 1.0 mm was prepared. Extruded at a die temperature of 160 ° C from the die, and attempted to obtain a film of two types and two layers with a thickness of 10 m.Film forming stability was reduced and a continuous film could not be obtained. Was evaluated for physical properties.
- Table 13 shows the physical property evaluation results of the films thus obtained.
- dalos % is a value obtained by measuring the surface glossiness and dalos (%) on the first layer side, and the anti-glare property was also evaluated on the first layer side.
- the third layer side was adhered to a polyvinyl chloride resin wallpaper
- the second layer side was formed of a polychlorinated vinyl resin wallpaper. They were closely adhered and evaluated by thermocompression bonding so that the first layer side was exposed to the outer surface.
- Table 14 shows the results of the antifouling test of the films obtained in Examples B1 to B13. However In Examples B9 to B13, an antifouling test was performed using the surface on the first layer side. It turns out that the film of the present invention is also a film excellent in antifouling properties. Further, it is clear that the films of Examples Bl, B2, B6, B8, B10, and Bll containing the fine particles polymer of silicone resin are more excellent in antifouling properties.
- the polylactic acid-based resin used in the following Examples and Comparative Examples was prepared by controlling the amount of catalyst, polymerization conditions, monomer composition, and the like according to the method described in Examples of Japanese Patent Publication No. Hei 4-504731.
- Examples of the fine particle polymer (D) include silicone resin fine particles manufactured by Shin-Etsu-Danigaku Kogyo Co., Ltd., KMP-590 (trade name), and PTFE (polytetrafluoroethylene) resin fine particles manufactured by Daikin Industries, Ltd.
- Lubron L-2 (trade name), Nippon Shokubai Co., Ltd., melamine resin fine particles, Eposter S-12 (trade name) were used.
- plasticizer (C) As the plasticizer (C), ATBC (tributyl acetyltaenoate) manufactured by Nissei Chemical Co., Ltd. as a hydroxy polycarboxylic acid ester, and Riquemar PL-019 manufactured by Riken Vitamin Co., Ltd. as a glycerin acetate fatty acid ester (both are trade names) was used.
- As a non-adhesive resin Suntech LD F-1920 (trade name) manufactured by Asahi Kasei Chemicals Corporation was used.
- the composition of the resin in the present invention is not limited to this.
- the crystalline polylactic acid (al), (a2), the amorphous polylactic acid (a3), and the fine particle polymer (D) in Table 15 were silicone resin fine particles.
- KMP-590 PTFE resin fine particles (Lubron L-2), melamine resin fine particles (eposter S-12), ATBC as a plasticizer (C), liquemar PL-019, and
- the obtained raw material pellets were obtained. That is, polylactic acid (A), fine particle polymer (D) and plasticizer (C) were melt-blended using a co-directional twin-screw extruder so as to have the composition shown in Table 16, to obtain polylactic acid compound pellets.
- the polylactic acid compound pellets thus obtained were melt-extruded with a single screw extruder, and formed into a film using a cylindrical single-layer die.
- a cylindrical die with an outer die lip diameter of 110 mm, an inner die lip diameter of 108 mm, and a lip clearance of 1.0 mm was used to blow molten resin extruded into a tube into a tube at approximately 25 ° C using a cooling ring. Air was injected into the tube to form bubbles, and the resulting film was guided to a pinch roll, and the tube-like film was wound up as two flat films.
- the resin extrusion speed, the amount of air injected into the bubble, and the film winding speed of the pinch roll were finely adjusted to obtain a finolem having a final thickness of 15 m.
- Table 16 shows the physical property evaluation results of the films obtained in Example C1-1C9 and Comparative Example C1-1C2.
- Example C10-14 the first layer (outermost layer of the tubular film) was melted using a co-rotating twin-screw extruder in the same manner as in Examples C1-1C9 so that the composition shown in Table 17 was obtained.
- the polylactic acid compound pellets obtained by melt blending dry blend the polylactic acid pellets with Pionore # 3001 or autoimmuneflec in the second layer (intermediate layer) to achieve the composition shown in Table 17.
- the third layer is a low-density resin that is non-adhesive to the second layer resin in Examples C10 and C13 and C14.
- Example C11 Ekoflex was used, and in Example C12, the same polylactic acid resin compound pellets as in the first layer were used.
- the outer die lip diameter was 110 mm and the inner die lip diameter was 108 mm.
- the low-density polyethylene layer which was a non-adhesive resin layer, was peeled off from the other two layers to obtain a target film, and physical properties were evaluated using the film. .
- Comparative Example C3 in order to directly obtain a film having the same composition, the same layer configuration, and the same thickness as the film of Example C10 after removing the non-adhesive resin layer, the films of Examples C10 to C14 were used.
- the two layers are the outer die lip diameter of 110 mm, the inner die lip diameter of 108 mm, and the lip tarrance of 1.0 mm.
- Table 17 shows the physical property evaluation results of the films thus obtained.
- dalos % is a value obtained by measuring the surface glossiness and dalos (%) on the first layer side, and the anti-glare property was also evaluated on the first layer side.
- the second layer was brought into close contact with the polychloride resin, and in Examples Cl and C12, the third layer was made of the polychloride resin.
- the evaluation was performed by thermocompression bonding so that the first layer side was exposed to the outer surface in close contact with the wallpaper.
- Table 18 shows the results of the antifouling test of the films obtained in Examples C1-1C14. However, in Examples C10 to C14, an antifouling test was performed using the surface on the first layer side. It turns out that the film of the present invention is also a film excellent in antifouling properties.
- the polylactic acid-based resin used in the following Examples and Comparative Examples was prepared by controlling the amount of catalyst, polymerization conditions, monomer composition, and the like according to the method described in Examples of Japanese Patent Publication No. Hei 4-504731.
- the inorganic filler (F) include calcium carbonate manufactured by Shiraishi Calcium Co., Ltd., Corocalso EX (trade name), talc manufactured by Matsumura Sangyo Co., Ltd., high filler # 12 (trade name), and Degussa Japan Co., Ltd.
- Silica and Sipernat FK310 (trade name) were used.
- plasticizer (C) ATBC (tributyl acetyltaenoate) of Nissei Chemical Co., Ltd. as a hydroxy polyvalent carboxylic acid ester, and Riquemar PL-019 (Ricemar PL-019 (trade name) of Riken Vitamin Co., Ltd. as a glycerin acetate fatty acid ester. )
- silicone resin particles KMP-590 (trade name), manufactured by Shin-Etsu Danigaku Kogyo KK) as the fine particle polymer (D).
- Suntech LD F-1920 (trade name) manufactured by Asahi Kasei Chemicals Corporation was used.
- the composition of the resin in the present invention is not limited to this!
- Examples D1 to D9 and Comparative Examples D1 to D2 the crystalline polylactic acid (al), (a2), the amorphous polylactic acid (a3), and the calcium carbonate (Colocaruso) as the inorganic filler (F) in Table 19 were used.
- EX talc (high filler # 12), silica (cypernate FK310), A TBC as plasticizer (C), liquemar PL-019, and silicone resin fine particles (KMP-590) as fine particle polymer (D).
- the compounded raw material pellets were obtained as follows.
- the polylactic acid (A), the inorganic filler (F), the plasticizer (C), and the fine particle polymer (D) were melt-blended using the same-direction twin-screw extruder so as to have the composition shown in Table 20.
- a polylactic acid compound pellet was obtained.
- the polylactic acid compound pellets thus obtained were melt-extruded with a single screw extruder, and formed into a film using a cylindrical single-layer die.
- Table 20 shows the physical property evaluation results of the films obtained in Examples D1 to D9 and Comparative Examples D1 to D2.
- the first layer (outermost layer of the tubular film) was formed using a co-axial twin screw extruder in the same manner as in Examples D1 to D9 so as to have the composition shown in Table 21.
- polylactic acid compound pellets obtained by melt-blending, dry-blend polylactic acid and Pionore # 3001 or Ecoflex into the second layer (intermediate layer) to have the composition shown in Table 21.
- Pionore # 3001, Ecoflex alone and apply the third layer (the innermost layer of the tubular film) in Examples D10 and D13 and D14 to the second layer resin with a non-adhesive resin.
- Comparative Example D3 in order to directly obtain a film having the same composition, the same layer configuration, and the same thickness as the film of Example D10 after removing the non-adhesive resin layer, the films of Examples D10-D14 Similarly, prepare the raw materials for the first layer and the second layer so that the composition shown in Table 21 is obtained.
- the two layers of the outer die lip diameter are 110 mm
- the inner die lip diameter is 108 mm
- the lip clearance are 1.0 mm.
- Extruded from a cylindrical die to obtain a film of 2 types and 2 layers with a thickness of 10 / zm.However, the continuous film was not obtained due to reduced film formation stability. An evaluation was performed.
- Table 21 shows the physical property evaluation results of the films thus obtained.
- dalos % is a value obtained by measuring the surface glossiness and dalos (%) on the first layer side, and the anti-glare property was also evaluated on the first layer side.
- the second layer was brought into close contact with the polychlorinated vinyl resin wallpaper, and in Examples D11 and D12, the third layer was adhered with the polyvinyl chloride resin.
- the evaluation was performed by thermocompression bonding so that the first layer side was exposed to the outer surface in close contact with the wallpaper.
- Table 22 shows the results of the antifouling test of the films obtained in Examples D1 to D14. However, in Examples D10 to D14, an antifouling test was performed using the surface on the first layer side. It turns out that the film of the present invention is also a film excellent in antifouling properties. In addition, it can be seen that the finolems of rows f, D1, D3, D5, D7, D9, Dll, and D13, each containing the fine particle posimer (D) indicating that the silicon is fine, are more excellent in antifouling properties.
- Crystalline polylactic acid (a1) 210,000 1.3% 97% 58 ° C 17 Crystalline polylactic acid (a2) 220,000 4.1% 92% 55 ° C 16 Amorphous polylactic acid (a3) 230,000 13.2% 74 % 54 ° C
- ATBC tributyl acetylquenate
- Example B1 Example B2 Example B3 Example # 4Example B5 Example B6 Example B7 Example B8 Comparative Example B1 Comparative Example B2 Comparative Example B3 Comparative Example B4 Raw Material Composition (Weight)
- Crystalline polylactic acid (a2) 220,000 3.9% 92% 55 ° C 162 ° C
- ATBC tributyl acetylquenate
- KMP_590 sicone resin 1.5 im Shin-Etsu Chemical Co., Ltd. product Lubron L-1 2 (PTFE resin) 5. ⁇ ⁇ Daikin Industries, Ltd. product poster S12 (melamine resin) 1.2 / jm Co., Ltd. Catalyst products
- Example C1 Example C2 Example C3 Example C4 Example C5 Example C6 Example C7 Example G8 Example C9 Comparative Example C1 Comparative Example C2 Material composition (% by weight)
- Crystalline polylactic acid (a 1) en o OnU
- Weight average molecular weight D-form included Optical purity Tg Ttn Remarks Polylactic acid resin (A)
- Crystalline polylactic acid (a2) 210,000 4.0% 92% 55 ° C 161 ° C
- Amorphous polylactic acid (a3) 220,000 13.1% 74% 54 ° C None
- ATBC tributyl acetate citrate
- the matte film or sheet of the present invention is a film or sheet comprising a polylactic acid resin (A), a chemically modified starch (B) and a plasticizer (C), and secondly, a polylactic acid resin.
- A), starch (E) and plasticizer (C) A film or sheet that also has the power, thirdly, a film or sheet composed of polylactic acid-based resin (A) and fine particle polymer (D), and fourthly, a polymer or sheet.
- films or sheets can be used alone as matte and high-grade packaging materials, as agricultural materials such as growing houses and multi-films, or as wallpaper, screens, upholstery, and daily use.
- Film or sheet that is used by laminating on the surface of other materials such as school supplies such as goods, envelopes, file cases, and cover processed goods, stationery, notebooks, etc. And laminated on the surface of paper products, paper containers, cloth products, textile products, table cloths, etc. to give a glossy, high-grade feel and moderate waterproofness, oil resistance, and stain resistance.
- FIG. 1 is an explanatory view of a position of a TD section and an MD section when a transmission electron micrograph is taken.
- FIG. 2 is a transmission electron micrograph of a TD section of the film of Example A18.
- FIG. 3 is a transmission electron micrograph of an MD cross section of the film of Example A18.
- FIG. 4 is a transmission electron micrograph of a TD cross section of the film of Example A1.
- FIG. 5 is a transmission electron micrograph of a TD cross section of the film of Example A24.
- FIG. 6 is a transmission electron micrograph of the MD cross section of the film of Example A24.
- FIG. 7 is a transmission electron micrograph of a TD section of the film of Example A36.
- FIG. 8 is a transmission electron micrograph of a TD section of the film of Example A37.
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Abstract
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EP04819368A EP1816164A4 (en) | 2003-11-25 | 2004-11-24 | MATTER FILM |
US10/580,266 US7879440B2 (en) | 2003-11-25 | 2004-11-24 | Matte film |
CN2004800409249A CN1906248B (zh) | 2003-11-25 | 2004-11-24 | 消光薄膜 |
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JP2004076981A JP2005263931A (ja) | 2004-03-17 | 2004-03-17 | 無機フィラー入り艶消しフィルム |
JP2004-076797 | 2004-03-17 | ||
JP2004-076981 | 2004-03-17 | ||
JP2004076982A JP2005263932A (ja) | 2004-03-17 | 2004-03-17 | 微粒子ポリマー入り艶消しフィルム |
JP2004115212A JP4846206B2 (ja) | 2003-11-25 | 2004-04-09 | 艶消しフィルム |
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WO2007060137A3 (de) * | 2005-11-23 | 2007-10-11 | Treofan Germany Gmbh & Co Kg | Pla-folie mit guten antistatischen eigenschaften |
WO2008130225A2 (en) | 2007-04-19 | 2008-10-30 | Synbra Technology B.V. | A polymer mixture, a method for producing an extruded product, methods for producing a starting material for a foamed moulded product and methods for producing a foamed moulded product, the products obtained with said methods and applications thereof |
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CN100379800C (zh) * | 2003-05-27 | 2008-04-09 | 旭化成化学株式会社 | 可生物降解的树脂膜或片及其制造方法 |
EP1937459A4 (en) * | 2005-10-21 | 2009-12-09 | Univ Clemson | COMPOSITE POLYMERIC MATERIALS FORMED FROM RENEWABLE RESOURCES |
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Also Published As
Publication number | Publication date |
---|---|
EP1816164A1 (en) | 2007-08-08 |
EP1816164A8 (en) | 2007-11-28 |
US20070160782A1 (en) | 2007-07-12 |
CN1906248B (zh) | 2010-06-16 |
CN1906248A (zh) | 2007-01-31 |
US7879440B2 (en) | 2011-02-01 |
EP1816164A4 (en) | 2008-01-02 |
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