WO2013031721A1 - 成形同時転写用フィルム - Google Patents
成形同時転写用フィルム Download PDFInfo
- Publication number
- WO2013031721A1 WO2013031721A1 PCT/JP2012/071571 JP2012071571W WO2013031721A1 WO 2013031721 A1 WO2013031721 A1 WO 2013031721A1 JP 2012071571 W JP2012071571 W JP 2012071571W WO 2013031721 A1 WO2013031721 A1 WO 2013031721A1
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- WO
- WIPO (PCT)
- Prior art keywords
- film
- polyester
- chain alkyl
- layer
- compounds
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/007—Lining or sheathing in combination with forming the article to be lined
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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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
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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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating
Definitions
- the present invention relates to a simultaneous molding transfer film, and more particularly to a simultaneous molding transfer film useful as a support film for a simultaneous molding decorative sheet used for decorating resin molded products such as electrical products and automobile parts. It is.
- the in-mold molding method is to create a transfer sheet in which a printing layer consisting of a release layer, a surface protective layer, an ink layer, an adhesive layer, etc. is laminated on the base film in advance, and the heat during plastic injection molding This is a transfer printing method using pressure.
- High gloss can be expressed by reducing the diameter of the additive particles in the film surface layer and decreasing the concentration of the additive particles, but when the transfer sheet is wound on a roll in the printing layer processing step, the surface protective layer is formed by smoothing the film. In some cases, this may cause blocking with the printing layer and the like, thereby reducing productivity.
- the film surface is roughened by increasing the diameter of the additive particles in the film surface layer or increasing the concentration of the additive particles, blocking defects do not occur, but glossiness is reduced and fine printing cannot be performed.
- the present invention has been made in view of the above circumstances, and the solution is to provide a function that is excellent in glossiness, does not cause blocking in the production process of the transfer sheet, and smoothly peels off at the interface after simultaneous molding processing.
- An object of the present invention is to provide a film for molding simultaneous transfer.
- the gist of the present invention is a film for molding and simultaneous transfer having a release layer on one side of a polyester film, and the polyester film comprises at least three layers in which both outermost layers are composed of the same polyester composition. It is a laminated polyester film, the number of surface protrusions having a height of 0.05 ⁇ m or more is 1900 / mm 2 or less, and the number of surface protrusions having a height of 0.6 ⁇ m or more is 25 / mm 2 or more. It exists in the film for shaping
- a film for simultaneous molding and transfer which is less prone to problems such as blocking in the transfer sheet process, is excellent in fine printing, and can eliminate the processing of the release layer during transfer sheet processing.
- the industrial value of the invention is very large.
- the “film for simultaneous transfer of molding” is simply abbreviated as a film.
- terephthalic acid is preferable.
- dicarboxylic acids such as diphenyl ether dicarboxylic acid and cyclohexane dicarboxylic acid may be included as a copolymerization component.
- the diol component is preferably ethylene glycol.
- propylene glycol trimethylene glycol, tetramethylene glycol, hexamethylene glycol, 1,4-cyclohexanedimethanol, diethylene glycol, triethylene glycol, polyalkylene glycol,
- diols such as neopentyl glycol may be included as a copolymerization component.
- Examples of the polymerization catalyst include antimony compounds such as antimony trioxide and antimony pentoxide, germanium compounds, and titanium compounds.
- Titanium compounds include, for example, tetraalkyl titanates, tetraaryl titanates, titanyl oxalate salts, titanyl oxalate, chelate compounds containing titanium, titanium tetracarboxylates, and specifically tetraethyl titanate, tetrapropyl titanate, tetraphenyl Examples thereof include titanate or a partial hydrolyzate thereof, titanyl ammonium oxalate, potassium titanyl oxalate, titanium triacetylacetonate and the like.
- inorganic particles that can be used include calcium carbonate, kaolin, talc, magnesium carbonate, barium carbonate, calcium sulfate, barium sulfate, lithium phosphate, calcium phosphate, magnesium phosphate, aluminum oxide, silicon oxide, titanium oxide, zirconium oxide, Examples thereof include lithium fluoride.
- examples of the organic salt particles include calcium oxalate, terephthalate such as calcium, barium, zinc, manganese, and magnesium.
- crosslinked polymer particles examples include divinylbenzene, styrene, acrylic acid, methacrylic acid, acrylic acid or a methacrylic acid vinyl monomer homopolymer or copolymer.
- organic particles such as polytetrafluoroethylene, benzoguanamine resin, thermosetting epoxy resin, unsaturated polyester resin, thermosetting urea resin, and thermosetting phenol resin may be used.
- the shape of the particles to be used is not particularly limited, and any of a spherical shape, a block shape, a rod shape, a flat shape, and the like may be used. Moreover, there is no restriction
- the method for adding particles to the polyester is not particularly limited, and a conventionally known method can be adopted.
- it can be added at any stage for producing the polyester, but the polycondensation reaction may proceed preferably after the esterification stage or after the transesterification reaction.
- a method of blending a slurry of particles dispersed in ethylene glycol or water with a vented kneading extruder and a polyester raw material, or a blending of dried particles and a polyester raw material using a kneading extruder is done by methods.
- the film of the present invention is a film having a multilayer structure of three or more layers.
- the layers other than the front and back layers of the film before the release layer can be made to contain a raw material for regenerating the film, thereby improving productivity.
- Both outermost layers of the film before providing the release layer of the present invention are composed of the same polyester composition.
- the number of surface protrusions having a height of 0.05 ⁇ m or more is 1900 pieces / mm 2 or less, preferably 1700 pieces / mm 2 or less.
- the number of surface protrusions having a height of 0.05 ⁇ m or more exceeds 1900 / mm 2 , the glossiness of the molded product is lowered and fine printing cannot be performed.
- the number of surface protrusions having a height of 0.6 ⁇ m or more in the film of the present invention is 25 pieces / mm 2 or more, preferably 35 pieces / mm 2 or more.
- the number of surface protrusions having a height of 0.6 ⁇ m or more is less than 25 / mm 2 , blocking occurs when the transfer sheet is wound up in a roll shape in a printing layer processing step such as a hard coat layer, an ink layer, or an adhesive layer. Is not preferable.
- the film of the present invention has a release layer on the surface of the printed layer that is in contact with the surface protective layer, the ink layer, etc., and the release layer is preferably provided by in-line coating in the film production process.
- the release layer is preferably provided by in-line coating in the film production process.
- the thickness of the film of the present invention is usually 10 to 250 ⁇ m, preferably 10 to 100 ⁇ m, more preferably 10 to 75 ⁇ m.
- the chip-formed polyester composition is dried using a commonly used dryer or vacuum dryer such as a hopper dryer, paddle dryer or oven.
- a commonly used dryer or vacuum dryer such as a hopper dryer, paddle dryer or oven.
- the chips are crystallized so that mutual fusion does not occur (also referred to as preliminary crystallization), and in the latter stage, the moisture content is sufficiently reduced (also referred to as main drying).
- main drying also referred to as main drying.
- two or more polyester melt extruders can be used to form a laminated film of three or more layers by a so-called coextrusion method.
- As a structure of a layer it can be set as the film of A / B / A structure using A raw material and B raw material, or the structure of other than that.
- the surface shape of the A layer can be designed by using specific particles as the A raw material, and a film having an A / B / A structure can be obtained by using a raw material not containing particles as the B raw material.
- the raw material of B layer can be selected freely, a cost advantage etc. are large.
- the surface roughness can be designed by the surface A layer, so that the cost advantage is further increased.
- the molten polymer is extruded from a die, and rapidly cooled and solidified on a rotary cooling drum so that the temperature is equal to or lower than the glass transition temperature to obtain a substantially amorphous unstretched sheet.
- an electrostatic application adhesion method and / or a liquid application adhesion method is preferably employed.
- the unstretched sheet thus obtained is stretched biaxially to form a film.
- the stretching conditions will be specifically described.
- the unstretched sheet is stretched 2 to 6 times in the machine direction at 70 to 145 ° C. to form a longitudinal uniaxially stretched film, and then 2 to 6 in the transverse direction at 90 to 160 ° C.
- the film is preferably stretched twice and heat-treated at 150 to 240 ° C. for 1 to 600 seconds. Further, at this time, a method of relaxing 0.1 to 20% in the longitudinal direction and / or the transverse direction in the maximum temperature zone of the heat treatment and / or the cooling zone at the heat treatment outlet is preferable. Further, it is possible to add re-longitudinal stretching and re-lateral stretching as necessary.
- In-line coating is a method of coating in the process of manufacturing a polyester film. Specifically, it is a method of coating at any stage from melt extrusion of polyester to biaxial stretching and then heat setting and winding. is there. Normally, it is coated on either a substantially amorphous unstretched sheet obtained by melting and quenching, then a uniaxially stretched film stretched in the longitudinal direction (longitudinal direction), or a biaxially stretched film before heat setting. To do.
- a method in which a uniaxially stretched film is coated, dried in a tenter and stretched in the transverse direction, and further heat treated with the base film is excellent.
- film formation and coating layer coating can be performed simultaneously, there is a merit in manufacturing cost, thin film coating is easy to perform stretching after coating, and heat treatment applied after coating is other than that. Since the high temperature is not achieved by this method, the film forming property of the coating layer is improved, and the polyester film is firmly adhered to the coating layer.
- the coating layer when used as a film for simultaneous molding transfer, it is not preferable that the coating layer breaks or peels in the layer or between the film, but the coating layer by in-line coating shows an excellent aspect in this respect.
- the coating layer contains a thermosetting compound, which will be described later, there is a merit that the reaction residue hardly remains due to the high-temperature treatment of in-line coating.
- the presence of a reactive residue in the coating layer may react with the components of the surface protective layer in the processing step for the transfer sheet, and the peelability may deteriorate.
- the release layer in the present invention contains at least one selected from fluorine compounds, long-chain alkyl compounds and waxes as a constituent material. These release agents may be used alone or in combination.
- Fluorine compound that can be used in the present invention is a compound containing a fluorine atom in the compound.
- Organic fluorine compounds are preferably used in terms of planarity due to in-line coating, and examples thereof include perfluoroalkyl group-containing compounds, polymers of olefin compounds containing fluorine atoms, and aromatic fluorine compounds such as fluorobenzene. .
- a polymer compound is preferable.
- the long-chain alkyl compound in the present invention is a compound having a linear or branched alkyl group having 6 or more carbon atoms, particularly preferably 8 or more.
- the upper limit of carbon number is usually 30.
- Specific examples include, but are not limited to, long-chain alkyl group-containing polyvinyl resins, long-chain alkyl group-containing acrylic resins, long-chain alkyl group-containing polyester resins, long-chain alkyl group-containing amino resins, long-chain alkyl groups.
- an ether compound, a long-chain alkyl group-containing quaternary ammonium salt, and the like In consideration of the transfer of the component derived from the release layer to the surface of the counterpart base material bonded when the release film is peeled off, a polymer compound is preferable.
- the wax that can be used in the present invention is a wax selected from natural waxes, synthetic waxes, and blended waxes thereof.
- Natural waxes are plant waxes, animal waxes, mineral waxes, and petroleum waxes. Examples of plant waxes include candelilla wax, carnauba wax, rice wax, wood wax, and jojoba oil. Animal waxes include beeswax, lanolin, and whale wax. Examples of the mineral wax include montan wax, ozokerite, and ceresin. Examples of petroleum wax include paraffin wax, microcrystalline wax, and petrolatum.
- Synthetic waxes include synthetic hydrocarbons, modified waxes, hydrogenated waxes, fatty acids, acid amides, amines, imides, esters, and ketones.
- synthetic hydrocarbons Fischer-Tropsch wax (also known as Sazoir wax) and polyethylene wax are well known, but in addition to these, low molecular weight polymers (specifically, polymers having a viscosity number average molecular weight of 500 to 20000)
- low molecular weight polymers specifically, polymers having a viscosity number average molecular weight of 500 to 20000.
- modified wax examples include montan wax derivatives, paraffin wax derivatives, and microcrystalline wax derivatives.
- the derivative herein is a compound obtained by any of purification, oxidation, esterification, saponification treatment, or a combination thereof.
- Hydrogenated waxes include hardened castor oil and hardened castor oil derivatives.
- thermosetting compound used in the release layer of the present invention various known resins can be used, and examples thereof include melamine compounds, epoxy compounds, oxazoline compounds, and isocyanate compounds.
- a melamine compound is more preferable in that it has excellent heat resistance during heat transfer and does not lower the releasability. These compounds function as crosslinking agents for long-chain alkyl compounds.
- Examples of the epoxy compound that can be used in the present invention include a compound containing an epoxy group in the molecule, a prepolymer and a cured product thereof.
- a typical example is a condensate of epichlorohydrin and bisphenol A.
- a reaction product of a low molecular polyol with epichlorohydrin gives an epoxy resin having excellent water solubility.
- the oxazoline compound that can be used in the present invention is a compound having an oxazoline ring in the molecule, and includes a monomer having an oxazoline ring and a polymer synthesized using the oxazoline compound as one of raw material monomers.
- the isocyanate compound that can be used in the present invention refers to a compound having an isocyanate group in the molecule. Specifically, hexamethylene diisocyanate, trimethylhexamethylene diisocyanate, cyclohexylene diisocyanate, xylylene diisocyanate, isophorone diisocyanate, naphthalene. Examples thereof include diisocyanate, tolylene diisocyanate, polymers and derivatives thereof.
- thermosetting compounds may be used alone or in combination of two or more. It can also be used with a catalyst to promote thermosetting. Furthermore, when consideration is given to application to in-line coating, it is preferable to have water solubility or water dispersibility.
- the proportion of the thermosetting compound used is usually 5 to 100 parts by weight, preferably 10 to 80 parts by weight, more preferably 100 parts by weight of at least one selected from fluorine compounds, long-chain alkyl compounds and waxes. Is 15 to 50 parts by weight.
- a binder polymer can be used in combination for the purpose of improving the adhesion between the polyester film and the release layer or improving the coated surface of the release layer.
- the binder polymer that can be used in the present invention is a number average molecular weight measured by gel permeation chromatography (GPC) according to a high molecular weight compound safety evaluation flow scheme (hosted by the Chemical Substances Council in November 1985). It is defined as a polymer compound having (Mn) of 1000 or more and having a film-forming property.
- binder polymer examples include polyester resin, acrylic resin, urethane resin, polyvinyl, polyalkylene glycol, polyalkyleneimine, celluloses and starches.
- inert particles may be contained, and specific examples include silica, alumina, kaolin, calcium carbonate, titanium oxide, organic particles, and the like.
- an antifoaming agent a coating property improver, a thickener, an organic lubricant, an antistatic agent, an antioxidant, an ultraviolet absorber, a foaming agent, a dye, etc. May be contained.
- conventionally known coating methods such as reverse gravure coating, direct gravure coating, roll coating, die coating, bar coating, curtain coating and the like can be used as a method for providing a release layer on the polyester film.
- coating method there is an example described in “Coating Method”, published by Yoji Harasaki, published in 1979.
- the curing conditions for forming the release layer on the polyester film are not particularly limited.
- the release layer is provided by in-line coating, it is usually 3 to 40 at 170 to 280 ° C.
- the heat treatment may be performed for 2 seconds, preferably 200 to 280 ° C. for 3 to 40 seconds.
- a conventionally well-known apparatus and an energy source can be used as an energy source for hardening by active energy ray irradiation.
- the coating solution used in the present invention is preferably an aqueous solution or an aqueous dispersion for handling and working environment, but contains water as the main medium and contains an organic solvent as long as it does not exceed the gist of the present invention. You may do it.
- the coating amount of the coating layer is usually 0.003 to 1.5 g / m 2 , preferably 0.005 to 0.5 g / m 2 , more preferably 0.005 to 0.1 g / m 2 . If the coating amount of the coating layer is less than 0.003 g / m 2, sufficient performance may not be obtained. A coating layer exceeding 1.5 g / m 2 is not preferable because it deteriorates the appearance and increases the cost. .
- a coating layer such as an antistatic layer, an adhesive layer, an oligomer precipitation preventing layer or the like may be provided on the surface where the release layer is not provided, as long as the gist of the present invention is not impaired.
- a discharge treatment may be performed.
- the projection height (X, ( ⁇ m)) referred to in the present invention is the level at which the number of projections is maximized at level 0, and the height from this level is defined as the projection height, and the number of projections at each projection height.
- the relationship with (Y, (pieces / mm 2 )) was graphically represented as a distribution curve.
- the number of protrusions having a protrusion height of 0.05 ⁇ m or more and 0.6 ⁇ m or more was represented by the total number of protrusions corresponding to protrusions having protrusion heights exceeding 0.05 ⁇ m and 0.6 ⁇ m by the above method.
- the criteria for determining the blocking property are as follows. A: There is blocking only at the 8 cm 2 portion where the load is applied. B: Blocking slightly spreads in addition to the 8 cm 2 portion where the load was applied. C: Blocking greatly spreads in addition to the 8 cm 2 portion where the load is applied.
- polyester raw material used in the following examples will be described.
- ⁇ Polyester 1> Using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the polyhydric alcohol component, a polyester chip having an intrinsic viscosity of 0.66 dl / g and no lubricant particle size was produced by a conventional melt polymerization method.
- Polyester 2> Polyester 1 was subjected to solid-phase polymerization in the usual manner to produce a polyester chip having an intrinsic viscosity of 0.85 dl / g and no lubricant particle size.
- ⁇ Polyester 3> Using terephthalic acid as the dicarboxylic acid component and ethylene glycol as the polyhydric alcohol component, an amorphous silica A having an intrinsic viscosity of 0.66 dl / g and an average particle size of 3.1 ⁇ m by a conventional melt polymerization method is obtained in an amount of 0.8. A polyester chip containing 60 parts was produced.
- ⁇ Polyester 4> Terephthalic acid was used as the dicarboxylic acid component, ethylene glycol was used as the polyhydric alcohol component, and amorphous silica B having an intrinsic viscosity of 0.66 dl / g and an average particle size of 3.1 ⁇ m was measured by a conventional melt polymerization method. A polyester chip containing 30 parts was produced. The amorphous silica B used in the polyester 4 is harder with less voids than the amorphous silica A used in the polyester 3.
- ⁇ Polyester 5> Uses terephthalic acid as the dicarboxylic acid component, ethylene glycol as the polyhydric alcohol component, and contains 1.0 part of calcium carbonate having an intrinsic viscosity of 0.66 dl / g and an average particle size of 1.4 ⁇ m by a conventional melt polymerization method.
- a polyester chip was produced.
- ⁇ Polyester 6> Uses terephthalic acid as the dicarboxylic acid component, ethylene glycol as the polyhydric alcohol component, and contains 1.0 part of calcium carbonate having an intrinsic viscosity of 0.66 dl / g and an average particle size of 1.0 ⁇ m by a conventional melt polymerization method.
- a polyester chip was produced.
- Examples of compounds constituting the release layer are as follows.
- Long chain alkyl compound (a) To a four-necked flask, 200 parts of xylene and 600 parts of otadecyl isocyanate were added and heated with stirring. From the time when xylene began to reflux, 100 parts of polyvinyl alcohol having an average degree of polymerization of 500 and a degree of saponification of 88 mol% was added in small portions over a period of about 2 hours. After the addition of polyvinyl alcohol, the reaction was completed by further refluxing for 2 hours. When the reaction mixture was cooled to about 80 ° C. and added to methanol, the reaction product was precipitated as a white precipitate. This precipitate was filtered off, added with 140 parts of xylene, and heated to dissolve completely. Thereafter, the operation of adding methanol again to precipitate was repeated several times, and then the precipitate was washed with methanol and dried and ground.
- Thermosetting compound (b) Crosslinkable resin of alkylol melamine / urea copolymer ("Beccamin J101" manufactured by Dainippon Ink & Chemicals, Inc.)
- Example 1 Polyester 2, Polyester 3 and Polyester 5 are blended at a weight ratio of 89: 8: 3, melted in an extruder, and supplied to the outer layer A of the laminated die. Supplied in weight ratio.
- Two types and three layers of laminated polyester resin composed of outer layer A / inner layer B / outer layer A were extruded into a film and cast on a cooling drum at 35 ° C. to rapidly cool and solidify an unstretched film.
- the long-chain alkyl compound (a) and the thermosetting compound are stretched 3.2 times in the longitudinal direction between 90 ° C rolls using an infrared heater and heating roll in combination.
- blended (b) by the weight ratio of 80:20 was apply
- the end of the film is gripped with a clip and guided into a tenter, stretched 4.0 times in the transverse direction while heating at a temperature of 95 ° C., heat-treated at 235 ° C. for 10 seconds, and an average thickness of 50 ⁇ m polyester.
- a film was obtained.
- the properties of the obtained film are as shown in Table 1, and showed excellent properties.
- Example 2 A polyester film was obtained in the same manner as in Example 1 except that polyester 2 and polyester 4 were blended at a weight ratio of 84:16, melted in an extruder, and supplied to the outer layer A of the laminated die.
- the properties of the obtained film are as shown in Table 1 and showed excellent properties.
- Example 3 A polyester film is obtained in the same manner as in Example 1 except that polyester 2, polyester 3 and polyester 4 are blended at a weight ratio of 91: 3: 6, melted in an extruder, and supplied to the outer layer A of the laminated die. It was. The properties of the obtained film are as shown in Table 1 and showed excellent properties.
- Example 4 A polyester film is obtained in the same manner as in Example 1 except that polyester 2, polyester 3 and polyester 4 are blended in a weight ratio of 92: 4: 4, melted in an extruder, and supplied to the outer layer A of the laminated die. It was. The properties of the obtained film were as shown in Table 1. From this result, when a transfer sheet in which a printing layer such as a surface protective layer, an ink layer, and an adhesive layer was laminated on the film was wound up in a roll shape, a slight blocking occurred, but at a practically usable level. there were.
- Example 5 A polyester film was obtained in the same manner as in Example 1 except that polyester 2 and polyester 3 were blended at a weight ratio of 80:20, melted in an extruder, and supplied to the outer layer A of the laminated die.
- the properties of the obtained film were as shown in Table 1.
- the color of the molded product was slightly clear but at a practically usable level.
- a transfer sheet in which a printing layer such as a surface protective layer, an ink layer, an adhesive layer or the like was laminated on the film was wound up in a roll shape, a slight blocking occurred but it was a practically usable level. .
- Comparative Example 1 A polyester film is obtained in the same manner as in Example 1 except that polyester 2, polyester 3 and polyester 6 are blended at a weight ratio of 89: 8: 3, melted in an extruder, and supplied to the outer layer A of the laminated die. It was. The properties of the obtained film were as shown in Table 1. From this result, when a transfer sheet in which a printing layer such as a surface protective layer, an ink layer, and an adhesive layer was laminated on the film was wound up in a roll shape, a large amount of blocking occurred, and it was determined that it could not be used practically. .
- Comparative Example 2 A polyester film was obtained in the same manner as in Example 1 except that polyester 2 and polyester 3 were blended at a weight ratio of 71:29, melted in an extruder, and supplied to the outer layer A of the laminated die. The properties of the obtained film were as shown in Table 2. From this result, it was determined that the color of the molded product was unclear and practically unusable.
- the film of the present invention can be suitably used as a support film for a simultaneous molding decorative sheet used for decorating resin molded products such as electric products and automobile parts.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Decoration By Transfer Pictures (AREA)
Abstract
Description
本発明で使用するポリエステルのジカルボン酸成分としては、テレフタル酸が好ましく、これらの他に、シュウ酸、マロン酸、コハク酸、アジピン酸、アゼライン酸、セバシン酸、フタル酸、イソフタル酸、ナフタレンジカルボン酸、ジフェニルエーテルジカルボン酸、シクロヘキサンジカルボン酸などの公知のジカルボン酸の一種以上を、共重合成分として含んでいてもよい。また、ジオール成分としては、エチレングリコールが好ましく、これらの他に、プロピレングリコール、トリメチレングリコール、テトラメチレングリコール、ヘキサメチレングリコール、1,4-シクロヘキサンジメタノール、ジエチレングリコール、トリエチレングリコール、ポリアルキレングリコール、ネオペンチルグリコールなどの公知のジオールの一種以上を、共重合成分として含んでいてもよい。
本発明において用いる塗布液は、取扱い上、作業環境上、水溶液または水分散液であることが望ましいが、水を主たる媒体としており、本発明の要旨を超えない範囲であれば、有機溶剤を含有していてもよい。
直接位相検出干渉法いわゆる2光束干渉法を用いた非接触表面形状刑形状システム(マイクロマップ社製MN537N-M100)を用い、428μm×320μmの測定領域におけるフィルム表面のRMS(2乗平均平方根面粗さ)、P-V(最大高さ)を計測した。なお、測定波長は、530nmとし、対物レンズは20倍を用い、12視野計測し、その中の最大値、最小値を除いた10視野での平均値とした。
三次元表面粗さ測定機(小坂研究所社製Surfcorder SE3500K)を用い、触針の先端半径5μm、針圧30mg、x方向測定長0.5mm(xピッチ:0.1μm、x方向点数:5001点)、y方向測定長0.6mm(yピッチ:3μm、y方向点数:200点)、カットオフ0.25mm、z測定倍率を20000倍の条件で突起高さと突起数を測定した。
本発明で言う突起高さ(X、(μm))は、突起数が最大となる点の高さを0レベルとし、このレベルからの高さをもって突起高さとして、各突起高さにおける突起数(Y、(個/mm2))との関係を図式化し分布曲線として表した。突起高さ0.05μm以上、および0.6μm以上の突起数は、上記方法による突起高さが0.05μmおよび0.6μmを超えた突起に対応する突起数のそれぞれの総数をもって表した。
黒、赤、黄、青色等のインキ層を付与した成形品の色彩を目視観察し、以下の基準にて判定した。
B:やや鮮明である(実用的に問題のないレベル)。
C:不鮮明である(実用的に問題があるレベル)。
(4)ブロッキング性評価:
フィルムの離型層に表面保護層、インキ層等を付与した転写シートを同方向に4枚重ね、70℃条件下で4kg/8cm2の荷重を8時間かけた後、フィルムの状態を目視観察した。
ブロッキング性の判定基準は以下のとおりである。
A:荷重をかけた8cm2の部分にのみブロッキングがある。
B:荷重をかけた8cm2の部分以外にもブロッキングがわずかに広がる。
C:荷重をかけた8cm2の部分以外にもブロッキングが大きく広がる。
<ポリエステル1>
ジカルボン酸成分としてテレフタル酸、多価アルコール成分としてエチレングリコールを使用し、定法の溶融重合法にて極限粘度が0.66dl/gで、滑剤粒径を含有しないポリエステルチップを製造した。
<ポリエステル2>
ポリエステル1を定法の固層重合を行い、極限粘度が0.85dl/gで、滑剤粒径を含有しないポリエステルチップを製造した。
<ポリエステル3>
ジカルボン酸成分としてテレフタル酸、多価アルコール成分としてエチレングリコールを使用し、定法の溶融重合法にて極限粘度が0.66dl/gで、平均粒径3.1μmの非晶質シリカAを0.60部含有するポリエステルチップを製造した。
ジカルボン酸成分としてテレフタル酸、多価アルコール成分としてエチレングリコールを使用し、定法の溶融重合法にて極限粘度が0.66dl/gで、平均粒径3.1μmの非晶質シリカBを0.30部含有するポリエステルチップを製造した。なお、ポリエステル4で使用の非晶シリカBはポリエステル3で使用の非晶シリカAよりも空隙が少なく硬いものである。
<ポリエステル5>
ジカルボン酸成分としてテレフタル酸、多価アルコール成分としてエチレングリコールを使用し、定法の溶融重合法にて極限粘度が0.66dl/gで、平均粒径1.4μmの炭酸カルシウムを1.0部含有するポリエステルチップを製造した。
<ポリエステル6>
ジカルボン酸成分としてテレフタル酸、多価アルコール成分としてエチレングリコールを使用し、定法の溶融重合法にて極限粘度が0.66dl/gで、平均粒径1.0μmの炭酸カルシウムを1.0部含有するポリエステルチップを製造した。
(化合物例)
・長鎖アルキル化合物(a):
4つ口フラスコにキシレン200部、オタデシルイソシアネート600部を加え、攪拌下に加熱した。キシレンが還流し始めた時点から、平均重合度500、ケン化度88モル%のポリビニルアルコール100部を少量ずつ10分間隔で約2時間にわたって加えた。ポリビニルアルコールを加え終わってから、さらに2時間還流を行い、反応を終了した。反応混合物を約80℃まで冷却してから、メタノール中に加えたところ、反応生成物が白色沈殿として析出したので、この沈殿を濾別し、キシレン140部を加え、加熱して完全に溶解させた後、再びメタノールを加えて沈殿させるという操作を数回繰り返した後、沈殿をメタノールで洗浄し、乾燥粉砕して得た。
アルキロールメラミン/尿素共重合の架橋性樹脂(大日本インキ化学工業製「ベッカミンJ101」)
ポリエステル2とポリエステル3とポリエステル5を89:8:3の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給し、積層ダイの内層Bにはポリエステル1を100の重量比率で供給した。外層A/内層B/外層Aの構成からなる2種3層の積層ポリエステル樹脂をフィルム状に押出して、35℃の冷却ドラム上にキャストして急冷固化した未延伸フィルムを作製した。次いで80℃の加熱ロールで予熱した後、赤外線加熱ヒータと加熱ロールを併用して90℃のロール間で縦方向に3.2倍延伸した後、長鎖アルキル化合物(a)と熱硬化性化合物(b)を80:20の重量比率で配合した塗布液を塗布量(乾燥後)が0.030g/m2になるように塗布した。次いでフィルム端部をクリップで把持してテンター内に導き、95℃の温度で加熱しつつ横方向に4.0倍延伸し、235℃で10秒間の熱処理を行い、平均厚さは50μmのポリエステルフィルムを得た。得られたフィルムの特性は表1に示す通りであり、優れた特性を示した。
ポリエステル2とポリエステル4を84:16の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表1に示すとおりであり、優れた特性を示した。
ポリエステル2とポリエステル3とポリエステル4を91:3:6の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表1に示すとおりであり、優れた特性を示した。
ポリエステル2とポリエステル3とポリエステル4を92:4:4の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表1に示すとおりであった。この結果より表面保護層、インキ層、接着層等の印刷層を当該フィルムの上に積層させた転写シートをロール状に巻き取った際、ブロッキングがわずかに発生したが実用上使用可能なレベルであった。
ポリエステル2とポリエステル3を80:20の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表1に示すとおりであった。この結果より成形品の色彩がやや鮮明であるが実用上使用可能なレベルであった。また表面保護層、インキ層、接着層等の印刷層を当該フィルムの上に積層させた転写シートをロール状に巻き取った際、ブロッキングがわずかに発生したが実用上使用可能なレベルであった。
ポリエステル2とポリエステル3とポリエステル6を89:8:3の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表1に示すとおりであった。この結果より表面保護層、インキ層、接着層等の印刷層を当該フィルムの上に積層させた転写シートをロール状に巻き取った際、ブロッキングが大きく発生し実用的に使用不可と判定された。
ポリエステル2とポリエステル3を71:29の重量比率で配合し、押出機にて溶融させて、積層ダイの外層Aに供給した以外は実施例1と同様にしてポリエステルフィルムを得た。得られたフィルムの特性は表2に示すとおりであった。この結果より成形品の色彩が不鮮明で実用的に使用不可と判定された。
Claims (4)
- ポリエステルフィルムの片面に離型層を有する成形同時転写用フィルムであって、上記ポリエステルフィルムは、両最外層が同一のポリエステル組成物から構成された少なくとも3層からなる積層ポリエステルフィルムであって、0.05μm以上の高さを有する表面突起数が1900個/mm2以下であり、0.6μm以上の高さを有する表面突起数が25/mm2以上であることを特徴とする成形同時転写用フィルム。
- 離型層が、フッ素化合物、長鎖アルキル化合物およびワックスの中から選ばれる少なくとも1種を含有する請求項1に記載の成形同時転写用フィルム。
- 長鎖アルキル化合物が、長鎖アルキル基含有ポリビニル樹脂、長鎖アルキル基含有アクリル樹脂、長鎖アルキル基含有ポリエステル樹脂、長鎖アルキル基含有アミノ樹脂、長鎖アルキル基含有エーテル化合物、長鎖アルキル基含有四級アンモニウム塩の群から選ばれた1種又は2種以上である(但し長鎖アルキル基の炭素数が6~30である)請求項2に記載の成形同時転写用フィルム。
- 離型層が、フッ素化合物、長鎖アルキル化合物およびワックスの中から選ばれる少なくとも1種(a)と共に、メラミン化合物、エポキシ化合物、オキサゾリン化合物、イソシアネート化合物の群から選ばれる少なくとも1種の熱硬化性化合物(b)を含有し、そして、成分(a)100重量部に対する成分(b)の割合が5~100重量部である請求項2又は3に記載の成形同時転写用フィルム。
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| EP12827021.2A EP2752295A1 (en) | 2011-09-02 | 2012-08-27 | Film for simultaneous formation and transcription |
| KR1020147004847A KR20140066170A (ko) | 2011-09-02 | 2012-08-27 | 성형동시전사용 필름 |
| US14/238,566 US20140242336A1 (en) | 2011-09-02 | 2012-08-27 | In-mold transfer film |
| CN201280041911.8A CN103764397A (zh) | 2011-09-02 | 2012-08-27 | 成形同时转印用膜 |
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| JP2011-191213 | 2011-09-02 | ||
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| JP2012-176559 | 2012-08-09 |
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| US (1) | US20140242336A1 (ja) |
| EP (1) | EP2752295A1 (ja) |
| JP (1) | JP2014050961A (ja) |
| KR (1) | KR20140066170A (ja) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015003993A (ja) * | 2013-06-21 | 2015-01-08 | 三菱樹脂株式会社 | 積層ポリエステルフィルム |
| WO2020031708A1 (ja) * | 2018-08-09 | 2020-02-13 | 東レフィルム加工株式会社 | 離型フィルム |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5281554B2 (ja) * | 2009-11-30 | 2013-09-04 | 三菱樹脂株式会社 | 離型フィルム |
| JP6596963B2 (ja) * | 2014-06-21 | 2019-10-30 | 三菱ケミカル株式会社 | 成型加飾材用ポリエステルフィルム |
| JP6596962B2 (ja) * | 2015-03-23 | 2019-10-30 | 三菱ケミカル株式会社 | 成型同時転写用ポリエステルフィルム |
| JP6743355B2 (ja) * | 2015-06-20 | 2020-08-19 | 三菱ケミカル株式会社 | 成型同時転写用ポリエステルフィルム |
| JP2019081335A (ja) * | 2017-10-31 | 2019-05-30 | Nissha株式会社 | 転写シート |
| JP7375435B2 (ja) * | 2019-09-30 | 2023-11-08 | 大日本印刷株式会社 | 熱転写シート |
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- 2012-08-27 CN CN201280041911.8A patent/CN103764397A/zh active Pending
- 2012-08-27 EP EP12827021.2A patent/EP2752295A1/en not_active Withdrawn
- 2012-08-27 WO PCT/JP2012/071571 patent/WO2013031721A1/ja not_active Ceased
- 2012-08-27 US US14/238,566 patent/US20140242336A1/en not_active Abandoned
- 2012-08-27 KR KR1020147004847A patent/KR20140066170A/ko not_active Withdrawn
- 2012-08-28 JP JP2012187092A patent/JP2014050961A/ja active Pending
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| WO2020031708A1 (ja) * | 2018-08-09 | 2020-02-13 | 東レフィルム加工株式会社 | 離型フィルム |
| JPWO2020031708A1 (ja) * | 2018-08-09 | 2021-08-02 | 東レフィルム加工株式会社 | 離型フィルム |
| JP7260474B2 (ja) | 2018-08-09 | 2023-04-18 | 東レフィルム加工株式会社 | 離型フィルム |
Also Published As
| Publication number | Publication date |
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| CN103764397A (zh) | 2014-04-30 |
| EP2752295A1 (en) | 2014-07-09 |
| US20140242336A1 (en) | 2014-08-28 |
| JP2014050961A (ja) | 2014-03-20 |
| KR20140066170A (ko) | 2014-05-30 |
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