WO2013161291A1 - Corps stratifié et son procédé de fabrication - Google Patents

Corps stratifié et son procédé de fabrication Download PDF

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Publication number
WO2013161291A1
WO2013161291A1 PCT/JP2013/002781 JP2013002781W WO2013161291A1 WO 2013161291 A1 WO2013161291 A1 WO 2013161291A1 JP 2013002781 W JP2013002781 W JP 2013002781W WO 2013161291 A1 WO2013161291 A1 WO 2013161291A1
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WO
WIPO (PCT)
Prior art keywords
layer
laminate
adhesive layer
transparent resin
base material
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PCT/JP2013/002781
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English (en)
Japanese (ja)
Inventor
要 近藤
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出光ユニテック株式会社
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Priority to JP2014512365A priority Critical patent/JP6085593B2/ja
Publication of WO2013161291A1 publication Critical patent/WO2013161291A1/fr

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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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14688—Coating articles provided with a decoration
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14811—Multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/412—Transparent
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • 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
    • B32B2307/75—Printability

Definitions

  • the present invention relates to a laminate suitable for decorating, a molded body using the laminate, and a method for producing the molded body.
  • the interior and exterior of automobiles and motorcycles, home appliance housings, building materials, information devices, and the like are decorated by printing on the resin surface.
  • the printed layer on the surface of the resin is peeled off depending on use conditions.
  • the decorating method which provides a transparent resin layer in a resin surface layer and provides a printing layer in the back surface part of a transparent resin layer is proposed (for example, patent documents 1, 2).
  • the same material or different material as the transparent resin layer is conventionally used for the backing film or backing sheet that protects the printing surface of the transparent resin layer.
  • Methods such as laminating, heat laminating and hot melt laminating are used.
  • each of them has a problem in that it requires a large-scale apparatus, has poor processability and yield, and has a large amount of processing at one time.
  • the present invention provides a laminate capable of neatly forming a printed pattern and color on the surface of the object to be decorated, and a molded body neatly formed of the printed pattern and color on the surface of the object to be decorated.
  • the present inventor has conducted earnest research and uses a laminate in which two films are bonded together at a room temperature through an adhesive layer having a predetermined adhesive strength. It has been found that by welding with heat during processing, decoration by a laminate (laminated body) can be realized more simply and with a smaller quantity than the conventional method, and the present invention has been completed.
  • the following laminated bodies the manufacturing method of a laminated body, a molded object, and the manufacturing method of a molded object are provided.
  • a transparent resin layer containing polyolefin A laminate comprising an adhesive layer having an adhesive strength within a range of 0.01 N / 25 mm to 10 N / 25 mm, and a base material layer containing polyolefin in this order.
  • the laminate according to 1 or 2 wherein the adhesive layer contains a tackifier and at least one selected from the group consisting of a styrene elastomer, ethylene vinyl alcohol, polyethylene, and polyolefin. 4).
  • the adhesive layer contains a styrene elastomer, a polyolefin, and a tackifier.
  • the styrenic elastomer is represented by the general formula ABA or AB. (Wherein, A is a styrene polymer block, and B is a butadiene polymer block, an isoprene polymer block, or a polymer block obtained by hydrogenating these).
  • a multilayer film (1) is formed by laminating at least an adhesive layer (1a) having an adhesive strength in the range of 0.01 N / 25 mm to 10 N / 25 mm and a base material layer (1b) containing polyolefin. And a second step of bonding the adhesive layer (1a) of the multilayer film (1) to a transparent resin sheet (2) including a layer containing polyolefin. Method. 8).
  • the second step is a step of bonding the adhesive layer (1a) of the multilayer film (1) to the printed surface of the transparent resin sheet (2) on which a pattern and / or color is printed.
  • the manufacturing method of the laminated body of 7 or 8 characterized by the above-mentioned. 10.
  • an adhesive layer (1a) having an adhesive strength within a range of 0.01 N / 25 mm to 10 N / 25 mm and a base material layer (1b) containing polyolefin The laminated body formed by bonding the said adhesion layer (1a) of the multilayer film (1) laminated
  • a molded body using the laminate according to any one of 11.1 to 6 and 10. 12 12.
  • a method for producing a molded body wherein the laminate (I) according to any one of 1 to 6 and 10 is heated to have a desired shape. 15.
  • a step of inserting the laminate (I) according to any one of 1 to 6 and 10 into a mold, and a resin on the base layer (1a) side of the laminate (I) inserted into the mold A method for producing a molded body comprising an injection step of injecting and providing a base resin layer (II).
  • a laminate capable of neatly forming a printed pattern and color on the surface of the object to be decorated, and a molded body neatly formed of the printed pattern and color on the surface of the object to be decorated.
  • decoration processing can be performed simply and inexpensively as compared with a conventional laminating method. Since it is possible to use a laminate in which a multilayer film consisting of an adhesive layer / base material layer is attached to a transparent resin sheet that has undergone printing processing at room temperature, facilities such as thermal lamination, dry lamination, and extrusion lamination are no longer necessary. Limits due to processability and processing amount are reduced.
  • the films can be bonded at room temperature, so that there is little risk of positional displacement, sagging of the printed surface, wrinkles, and the like based on the difference in thermal expansion coefficient between the film materials.
  • the adhesive strength of the adhesive layer of the laminate is moderate, it is possible to reattach when misalignment occurs, yield in the production of the laminate, and further yield in the production of the molded body using the laminate. Can also be expected.
  • a base resin layer is provided on the base material layer side of the laminate by injection molding, the adhesive layer and the transparent resin layer of the laminate are thermally welded by heat during injection molding of the base resin layer material. Therefore, it is expected to shorten the manufacturing process.
  • the laminate of the present invention includes a transparent resin layer containing polyolefin, an adhesive layer having an adhesive strength within a range of 0.01 N / 25 mm to 10 N / 25 mm, and a base material layer containing polyolefin in this order. It is characterized by becoming.
  • the “laminate” means a laminate having a planar shape, and a substrate layer, an adhesive layer and a transparent resin layer or a transparent resin sheet bonded together.
  • the “laminate” has a planar shape and means a laminate of a base material layer, an adhesive layer, a printed layer, and a transparent resin layer or a transparent resin sheet.
  • the “molded product” means a product obtained by heating the “laminate” and thermally welding the adhesive layer of the laminate to the transparent resin layer.
  • the heated laminate which itself is a molded body
  • the heated laminate is referred to as a “laminate portion”.
  • the transparent resin layer is a transparent sheet or transparent film containing polyolefin.
  • transparent means that the haze value is in the range of 0.1% to 60%, preferably 0.1 to 30%. If the haze value is within the above range, a print or the like applied on one surface can be sufficiently seen from the surface of the molded body, and a molded body having a good design can be obtained.
  • the polyolefin contained in the transparent resin layer is preferably a propylene resin.
  • the transparent resin layer may contain a resin such as a metallocene ethylene- ⁇ -olefin copolymer, a polyolefin elastomer, and a low stereoregular olefin polymer.
  • a resin such as a metallocene ethylene- ⁇ -olefin copolymer, a polyolefin elastomer, and a low stereoregular olefin polymer.
  • the blending amount of the polyolefin is preferably 80% by weight or more, more preferably 90% by weight or more, and further preferably 95% by weight or more.
  • additives such as pigments, anti-aging agents, stabilizers, ultraviolet absorbers, nucleating agents, etc. may be blended in the transparent resin layer as necessary.
  • the thickness of the transparent resin layer may be appropriately selected according to the purpose, but is preferably in the range of 20 to 1,500 ⁇ m.
  • the transparent resin layer may be formed of a single layer or a plurality of layers.
  • the transparent resin layer uses, for example, a rapid cooling method disclosed in Japanese Patent No. 4237275, a rapid cooling and heating method disclosed in Japanese Patent No. 3193801, and a nucleating agent disclosed in Japanese Patent Application Laid-Open No. 2002-226647. What was manufactured by the method which did it can be used suitably.
  • the transparent resin layer a commercially available sheet or film may be used.
  • pure thermo AG-301X, super pure array EG-170TC both are registered trademarks, manufactured by Idemitsu Unitech Co., Ltd., etc. it can.
  • the substrate layer is not particularly limited as long as it is a sheet or film containing a polyolefin generally used as a support.
  • examples thereof include a copolymer, an ethylene-methyl methacrylate copolymer, an ethylene-n-butyl acrylate copolymer, and polypropylene (homopolymer, random copolymer, block copolymer). These resins may be used alone or as a mixture in any combination.
  • block copolymer polypropylene (BPP) is preferable as the material of the base material layer. By using BPP, tear strength and impact strength can be improved, and heat resistance and rigidity can be imparted.
  • the base material layer may be formed of a plurality of layers.
  • the total thickness of the base layer composed of a single layer or a plurality of layers is preferably, for example, 30 to 1,000 ⁇ m.
  • the pressure-sensitive adhesive layer preferably contains a tackifier, and one or more selected from the group consisting of a styrene elastomer, ethylene vinyl alcohol, polyethylene and polyolefin, a styrene elastomer, a polyolefin, a tackifier, It is more preferable to contain.
  • the pressure-sensitive adhesive layer can be composed of 90% or more, 95% or more, or 98% or more from one or more selected from the group consisting of a tackifier, styrene elastomer, ethylene vinyl alcohol, polyethylene, and polyolefin.
  • the styrenic elastomer compounded in the adhesive layer has a general formula of ABA or AB It is a block copolymer represented by these.
  • One component A that is, the styrene polymer block, preferably has an average molecular weight of about 12,000 to 100,000 and a glass transition temperature of 20 ° C. or higher.
  • the other component B that is, a butadiene polymer block, an isoprene polymer block, or a polymer block obtained by hydrogenation thereof, has an average molecular weight of about 10,000 to 300,000 and has a glass transition.
  • a temperature of ⁇ 20 ° C. or lower is preferable.
  • polystyrene compounded in the adhesive layer examples include, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, ethylene- ⁇ olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate.
  • examples thereof include a copolymer, an ethylene-methyl methacrylate copolymer, an ethylene-n-butyl acrylate copolymer, and polypropylene (homopolymer, random copolymer, block copolymer).
  • polypropylene is preferred.
  • Polypropylene has good compatibility with styrene-based elastomers, is excellent in heat resistance, and is less susceptible to contamination of the adherend due to bleeding.
  • a resin that is selectively compatible with the styrene elastomer can be used.
  • resins include aliphatic hydrocarbon resins, terpene resins, coumarone / indene resins, aromatic hydrocarbon resins, and rosin resins.
  • the adhesive layer may contain additives such as softeners such as liquid polymers and paraffin oil, fillers, pigments, anti-aging agents, stabilizers, UV absorbers, and the like as necessary.
  • the adhesive layer preferably contains 10 to 200 parts by weight of polyolefin and 3 to 100 parts by weight of a tackifier with respect to 100 parts by weight of the styrene elastomer.
  • the polyolefin content is preferably 15 to 100 parts by weight, more preferably 20 to 60 parts by weight, and the tackifier content is preferably 5 to 50 parts by weight.
  • the thickness of the adhesive layer is 5 ⁇ m or more and 25 ⁇ m or less, preferably 10 ⁇ m or more and 20 ⁇ m or less.
  • the adhesive strength of the adhesive layer is in the range of 0.01 N / 25 mm to 10 N / 25 mm, and preferably in the range of 0.05 N / 25 mm to 1.5 N / 25 mm. If the adhesive strength is less than 0.01 N / 25 mm, handling may deteriorate, such as peeling by conveyance until thermoforming. If it exceeds 10 N / 25 mm, re-bonding at the time of misalignment becomes difficult, and the yield is low. May get worse.
  • the adhesive strength is such that a multilayer film composed of a base material layer and an adhesive layer is pressure-bonded to an adherend (transparent resin layer) under conditions of a linear pressure of 0.38 MPa and 2 m / min, and stored at 23 ° C. for 24 hours. To do. Then, using a tensile tester, peeling is performed at a pulling speed of 0.3 m / min and 180 ° peel, and the resistance value at that time is defined as the adhesive strength.
  • the blending amounts of styrene elastomer, polyolefin, tackifier and the like constituting the adhesive layer may be adjusted.
  • the laminated body of this invention further comprises a printing layer between the said transparent resin layer and the said adhesion layer.
  • the print layer is formed by printing a pattern and / or color on one side of the transparent resin layer by a method such as screen printing, offset printing, or gravure printing. By adhering the adhesive layer of the multilayer film to the printed surface, the printed pattern and color can be protected.
  • the ink used when printing on one side of the transparent resin layer is not particularly limited, and may be appropriately selected according to the material of the transparent resin layer.
  • Teikoku Ink Mfg. Co., Ltd. IPX-HF979 black, POS-911 black, and the like can be mentioned.
  • the printing layer can be formed by printing using T-250 mesh and drying in a drying furnace at 60 ° C. for 90 minutes.
  • FIG. 1 shows a laminate I which is an embodiment of the present invention.
  • the laminate I has a three-layer structure as shown in FIG. 1 and is composed of a multilayer film 1 and a transparent resin layer 2, and the multilayer film 1 is composed of an adhesive layer 1a and a base material layer 1b.
  • FIG. 2 shows a laminate I which is another embodiment of the present invention.
  • the laminate I has a four-layer structure as shown in FIG. 2, and is composed of a multilayer film 1, a transparent resin layer 2, and a printing layer 2a.
  • the multilayer film 1 is composed of an adhesive layer 1a and a base material layer 1b.
  • the print layer 2 a is inside the transparent resin layer 2 (on the adhesive layer 1 a side) and is in contact with the adhesive layer 1 a of the multilayer film 1.
  • the method for producing the laminate of the present invention comprises: First, a multilayer film (1) is formed by laminating at least an adhesive layer (1a) having an adhesive strength in the range of 0.01 N / 25 mm to 10 N / 25 mm and a base material layer (1b) containing polyolefin. And a second step of bonding the adhesive layer (1a) of the multilayer film (1) to a transparent resin sheet (2) including a layer containing polyolefin.
  • the adhesive layer (1a) and the base material layer (1b) are preferably multi-layered by multilayer extrusion molding or lamination.
  • Conventionally known methods can be used for multilayer extrusion molding and laminating for multi-layering the adhesive layer (1a) and the base material layer (1b), and examples thereof include a two-layer coextrusion method.
  • a base material layer (1b) and an adhesion layer (1a) can be laminated
  • a laminate can be formed with a relatively simple manufacturing apparatus.
  • the manufacturing cost of a laminated body can be restrained cheaply by simplification of a manufacturing process.
  • the adhesive strength of the adhesive layer is moderate, so re-bonding at the time of misalignment Therefore, even if the transparent resin sheet (2) is peeled off, it is difficult for adhesive to remain.
  • the adhesive layer (1a) of the multilayer film (1) is bonded to the transparent resin sheet (2) including a polyolefin-containing layer on the adhesive layer (1a) side to form a laminate.
  • the transparent resin sheet (2) is a sheet composed of a plurality of layers
  • a layer containing a polyolefin transparent resin layer
  • Bonding is usually performed at room temperature.
  • the adhesive layer has a predetermined adhesive strength and is bonded at room temperature, even if there is a positional shift, it can be peeled off once and bonded again, and the yield of the laminate is improved.
  • the transparent resin sheet may be composed of only “a layer containing polyolefin”, but may include other layers.
  • a 2nd process is a process of bonding the said adhesion layer (1a) of the said multilayer film (1) to this printing surface of the said transparent resin sheet (2) on which the pattern and / or color were printed. Is preferred.
  • a laminate having a pattern and / or color used for decoration can be produced.
  • the molded body of the present invention is characterized by using the laminate of the present invention.
  • the molded body of the present invention preferably further has a base resin layer on the base layer side.
  • the decorated molded object can be easily obtained by using the laminated body of this invention.
  • FIG. 1 The schematic diagram of one Embodiment of the molded object of this invention which consists of a transparent resin layer / printing layer / adhesion layer / base material layer / base material resin layer is shown in FIG.
  • This molded body III is composed of a laminate portion I and a base resin layer II, and the laminate portion I is composed of a transparent resin layer 2, a printing layer 2a, and a multilayer film 1.
  • the multilayer film 1 is a laminate film of an adhesive layer 1a and a base material layer 1b, and the adhesive layer 1a is fused to the printing layer 2a.
  • the base resin layer II is formed by injection-molding polypropylene
  • the adhesive layer 1a is made of a styrene-based elastomer, polyolefin, and a tackifier
  • the base material layer 1b is made of polypropylene.
  • the base resin layer is made of a resin that can be welded to the base layer 1 b of the multilayer film 1.
  • it is preferably made of an olefin resin and a propylene resin, but this is not a limitation.
  • the method of providing the base resin layer is not particularly limited, but it is preferably formed by injection molding.
  • the method for producing a molded body of the present invention includes a step of heating the laminate (I) of the present invention to a desired shape.
  • the timing which heats laminated body (I) may be before putting in a metal mold
  • the laminated body of the present invention can be formed into a desired shape by being inserted into a mold and then heated by the molten injection resin. In this case, after inserting into a metal mold
  • at least one surface of the laminate (I) is heated to a range of 100 ° C. to 170 ° C.
  • the heating may be performed simultaneously with the formation of the base resin layer by the heat of the molten injection resin in a state where the laminate (I) is inserted into the mold.
  • the transparent resin layer and the adhesive layer, and the base material layer and the base resin layer can be welded simultaneously with the shaping.
  • the base resin layer and the base material layer of the laminate are formed by heat during injection molding of the base resin layer material. Welded.
  • the adhesive layer (1a) and the transparent resin sheet (2) are thermally welded by applying heat to the laminate (I).
  • the heating of the laminate (I) is such that the pressure-sensitive adhesive layer (1a) and the transparent resin sheet (2) are thermally welded, and the multilayer film (1) can be easily maintained in the transparent resin sheet (2) while maintaining its shape. It is sufficient that the temperature and time are sufficient to make it impossible to peel off the film.
  • the heating temperature is preferably in the range of 100 ° C. to 170 ° C., more preferably 120 ° C. to 160 ° C., as the sheet surface temperature. If it is the said temperature range, sufficient heat welding will be achieved.
  • a heating time suitably according to a heating method.
  • the said heating can also be implemented by making injection resin contact the at least single side
  • the step of inserting the laminate (I) into a mold, and injecting a resin onto the substrate layer side of the laminate (I) inserted into the mold An injection step of providing the resin layer (II).
  • the material of the base resin layer (II) is as described in the description of the molded body of the present invention.
  • the mold in which the laminate (I) of the present invention is inserted is closed to obtain a desired shape, and then a molten molding resin is injected into the mold cavity to be molded.
  • a molten molding resin is injected into the mold cavity to be molded.
  • the materials used for the production of the laminates and molded articles of the examples are as follows.
  • -Transparent polypropylene sheet Pure Thermo (registered trademark) AG-301X, manufactured by Idemitsu Unitech Co., Ltd., thickness 0.2 mm
  • Adhesive layer material 100 parts by weight of styrene elastomer containing vinyl-polyisoprene block, 35 parts by weight of propylene homopolymer, 16 parts by weight of copolymer petroleum resin of aromatic petroleum resin and dicyclopentadiene as tackifier Were mixed to prepare an adhesive layer material.
  • the adhesive strength of the adhesive layer was 1.1 N / 25 mm.
  • the adhesive strength was measured by pressing a multilayer film composed of a base material layer and an adhesive layer onto an adherend (polypropylene transparent resin sheet) under conditions of a linear pressure of 0.38 MPa and 2 m / min, and 24 ° C. at 24 ° C. Save time. Thereafter, using a tensile tester, the adherend was peeled off at a pulling rate of 0.3 m / min and 180 ° peel, and the resistance value at that time was defined as the adhesive strength.
  • the adhesive layer material and the base material layer material are coextruded by a two-layer coextrusion method so that the adhesive layer has a thickness of 11 ⁇ m and the base material layer has a thickness of 39 ⁇ m. Obtained.
  • Example 1 A multilayer film of adhesive layer / base material layer was laminated to a transparent polypropylene sheet having a thickness of 0.2 mm at room temperature with the adhesive layer side facing the transparent polypropylene sheet.
  • the laminate was thermoformed (heated to a sheet surface temperature of 135 ° C. with an infrared heater) to weld the adhesive layer to obtain a formed body.
  • Example 2 An ink layer is applied to one side of a transparent polypropylene sheet having a thickness of 0.2 mm by screen printing, and the multilayer film of the adhesive layer / base material layer is laminated at room temperature with the adhesive layer side facing the ink layer. It was.
  • the pressure-sensitive adhesive layer was welded by thermoforming the laminated body (heating the sheet surface temperature to 135 ° C. with an infrared heater) to obtain a molded body.
  • Example 3 An ink layer is applied to one side of a transparent polypropylene sheet having a thickness of 0.2 mm by offset printing, and the multilayer film of the adhesive layer / base material layer is laminated at room temperature with the adhesive layer side facing the ink layer. It was.
  • the pressure-sensitive adhesive layer was welded by thermoforming the laminated body (heating the sheet surface temperature to 135 ° C. with an infrared heater) to obtain a molded body.
  • Example 4 An ink layer is applied to one side of a transparent polypropylene sheet having a thickness of 0.2 mm by gravure printing, and a multilayer film of adhesive layer / base material layer is laminated at room temperature with the adhesive layer side facing the ink layer. It was.
  • the pressure-sensitive adhesive layer was welded by thermoforming the laminated body (heating the sheet surface temperature to 135 ° C. with an infrared heater) to obtain a molded body.
  • Examples 5-7 The laminates (before thermoforming) obtained in Examples 2 to 4 were inserted into an injection mold and closed to a desired shape, and then polypropylene resin (base resin) was applied to the base layer side. ) To obtain a molded body in which the base material resin layer was integrated on the base material layer side.
  • Evaluation example 2 The welding strength between the adhesive layer and the transparent resin layer of the molded body having the base resin layer obtained in Examples 5 to 7 was measured and evaluated as follows. The results are shown in Table 2. A 15 mm width cut was made in the laminate on the base resin of the molded body, and with a tensile tester, the tensile speed was 0.3 m / min, and the 180 ° peel from the transparent resin layer to the adhesive layer / base material layer. The film was peeled off, and the resistance value at that time was measured as the welding strength. The adhesion was marked as ⁇ at 10 N / 15 mm or more, ⁇ at 5 N / 15 mm or more, and x at less than that.
  • the laminate and molded body of the present invention are useful in the decoration technology of resin molded products having a three-dimensional shape by insert molding, such as decoration of interior and exterior of automobiles and two-wheeled vehicles, home appliance housings, building materials, information devices, etc. Used as a nameplate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne un corps stratifié comprenant dans l'ordre suivant : une couche de résine transparente comprenant une polyoléfine ; une couche adhésive présentant une résistance d'adhérence dans la plage allant de 0,01 N/25 mm à 10 N/25 mm ; et une couche de matériau de base comprenant une polyoléfine. La présente invention concerne également un corps moulé utilisant ledit corps stratifié.
PCT/JP2013/002781 2012-04-26 2013-04-24 Corps stratifié et son procédé de fabrication WO2013161291A1 (fr)

Priority Applications (1)

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JP2014512365A JP6085593B2 (ja) 2012-04-26 2013-04-24 積層体及びその工法

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JP2012-101433 2012-04-26
JP2012101433 2012-04-26

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JP2015117335A (ja) * 2013-12-19 2015-06-25 株式会社カネカ ホットメルト型接着フィルムおよび成型体
WO2017200059A1 (fr) * 2016-05-18 2017-11-23 株式会社クラレ Film multicouche
WO2018225780A1 (fr) * 2017-06-06 2018-12-13 株式会社クラレ Film multicouche et son procédé de fabrication
WO2019054397A1 (fr) * 2017-09-12 2019-03-21 出光ユニテック株式会社 Stratifié, article moulé et procédé de fabrication d'un article moulé
WO2021162088A1 (fr) * 2020-02-12 2021-08-19 王子ホールディングス株式会社 Film décoratif et objet moulé décoré
JP6977835B1 (ja) * 2020-08-28 2021-12-08 王子ホールディングス株式会社 加飾フィルム及び加飾成形体

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JP6515917B2 (ja) * 2014-06-18 2019-05-22 東洋紡株式会社 自己粘着性表面保護フィルム

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JP2015117335A (ja) * 2013-12-19 2015-06-25 株式会社カネカ ホットメルト型接着フィルムおよび成型体
WO2017200059A1 (fr) * 2016-05-18 2017-11-23 株式会社クラレ Film multicouche
KR20190003980A (ko) * 2016-05-18 2019-01-10 주식회사 쿠라레 다층 필름
JPWO2017200059A1 (ja) * 2016-05-18 2019-03-14 株式会社クラレ 多層フィルム
EP3459735A4 (fr) * 2016-05-18 2020-05-27 Kuraray Co., Ltd. Film multicouche
KR102182770B1 (ko) * 2016-05-18 2020-11-25 주식회사 쿠라레 다층 필름
KR102378165B1 (ko) 2017-06-06 2022-03-23 주식회사 쿠라레 다층 필름 및 그 제조 방법
WO2018225780A1 (fr) * 2017-06-06 2018-12-13 株式会社クラレ Film multicouche et son procédé de fabrication
KR20200014382A (ko) * 2017-06-06 2020-02-10 주식회사 쿠라레 다층 필름 및 그 제조 방법
JPWO2018225780A1 (ja) * 2017-06-06 2020-04-09 株式会社クラレ 多層フィルムおよびその製造方法
JP7163286B2 (ja) 2017-06-06 2022-10-31 株式会社クラレ 多層フィルムおよびその製造方法
EP3636431A4 (fr) * 2017-06-06 2021-03-10 Kuraray Co., Ltd. Film multicouche et son procédé de fabrication
WO2019054397A1 (fr) * 2017-09-12 2019-03-21 出光ユニテック株式会社 Stratifié, article moulé et procédé de fabrication d'un article moulé
EP3683052A4 (fr) * 2017-09-12 2021-07-07 Idemitsu Unitech Co., Ltd. Stratifié, article moulé et procédé de fabrication d'un article moulé
JPWO2019054397A1 (ja) * 2017-09-12 2020-10-15 出光ユニテック株式会社 積層体、成形体及び成形体の製造方法
WO2021162088A1 (fr) * 2020-02-12 2021-08-19 王子ホールディングス株式会社 Film décoratif et objet moulé décoré
CN115087546A (zh) * 2020-02-12 2022-09-20 王子控股株式会社 装饰膜及装饰成型体
JP7467962B2 (ja) 2020-02-12 2024-04-16 王子ホールディングス株式会社 加飾フィルム及び加飾成形体
JP6977835B1 (ja) * 2020-08-28 2021-12-08 王子ホールディングス株式会社 加飾フィルム及び加飾成形体
JP2022039430A (ja) * 2020-08-28 2022-03-10 王子ホールディングス株式会社 加飾フィルム及び加飾成形体

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