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WO2011096350A1 - Film de protection de surface - Google Patents

Film de protection de surface Download PDF

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Publication number
WO2011096350A1
WO2011096350A1 PCT/JP2011/051865 JP2011051865W WO2011096350A1 WO 2011096350 A1 WO2011096350 A1 WO 2011096350A1 JP 2011051865 W JP2011051865 W JP 2011051865W WO 2011096350 A1 WO2011096350 A1 WO 2011096350A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective film
surface protective
layer
propylene
copolymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/051865
Other languages
English (en)
Japanese (ja)
Inventor
井上　則英
久行 大胡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Chemicals Tohcello Inc
Original Assignee
Mitsui Chemicals Tohcello Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Tohcello Inc filed Critical Mitsui Chemicals Tohcello Inc
Priority to JP2011552761A priority Critical patent/JPWO2011096350A1/ja
Publication of WO2011096350A1 publication Critical patent/WO2011096350A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • 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
    • B32B2307/538—Roughness
    • 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
    • B32B2307/704—Crystalline
    • 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
    • B32B2307/712—Weather resistant
    • 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
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • 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
    • B32B2571/00—Protective equipment
    • 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
    • B32B2605/00—Vehicles
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2453/00—Presence of block copolymer

Definitions

  • the present invention relates to a surface protective film used for optical products, building materials, automobile parts and the like. Specifically, it has excellent adhesive properties, transparency, and heat resistance, has little contamination to the adherend, etc., and is easy to unwind when the film is unwound from a roll (hereinafter referred to as “unwinding property”). It is related with the surface protection film excellent in.
  • the surface protective film is used by sticking to adherends such as resin products, metal products, glass products, etc. mainly for building materials and optical applications, and prevents them from being scratched or contaminated during transport, storage or processing. Plays.
  • adherends such as resin products, metal products, glass products, etc. mainly for building materials and optical applications, and prevents them from being scratched or contaminated during transport, storage or processing. Plays.
  • These surface protective films generally comprise a non-adhesive surface layer and an adhesive layer for adhering to the adherend.
  • the surface layer is usually formed from a polyolefin such as polyethylene or polypropylene, a polyester such as polyethylene terephthalate, or a vinyl polymer such as polyvinyl chloride.
  • a surface protection film when used for building materials or automotive parts, it may be thermoformed with the surface protection film attached, and high heat resistance that can be used as a surface protection film is required even at high temperatures. Has been.
  • the surface protective film having a relatively high adhesive strength does not have a sufficient payout property, it is in a roll state in which a release film is bonded to the adhesive layer and wound up, and is applied to an adherend.
  • the release film is peeled off and used.
  • a large amount of release film is generated as waste, so that a surface protective film having sufficient payout property without a release film is required.
  • Patent Document 1 discloses a surface protective film mainly composed of a polyethylene component.
  • the protective film of the same publication can be applied to some application members, but has low adhesive strength and insufficient transparency, and the application of the adherend is limited.
  • Patent Document 2 discloses a protective film composed of a back layer and an adhesive layer obtained using a specific resin composition.
  • the protective film of the same publication does not sufficiently prevent the generation of fish eyes, and particularly when used as a protective film for an optical member or the like, there is a risk of adversely affecting the adherend, and there is a need for improvement.
  • the object of the present invention is to provide properties required as a surface protective film for protecting optical products, building material products and automobile parts during storage, transportation, processing and inspection, in particular, adhesive properties, transparency and heat resistance.
  • Another object of the present invention is to provide a surface protective film excellent in feeding performance.
  • the present invention is a surface protective film comprising at least two layers of a surface layer (A) and an adhesive layer (X), the surface layer (A) is composed of a propylene-based polymer, and the surface layer has a surface roughness.
  • the present invention relates to a surface protective film having (Ra) in the range of 0.2 to 2.0 ⁇ m.
  • the suitable aspect of this invention is the said surface protective film whose adhesive force with respect to an acryl is 1 N / 50mm or more, Furthermore, adhesive layer (X) is formed from an olefin-type elastomer and / or a styrene-type elastomer. It is the said surface protection film characterized by the above-mentioned.
  • the surface protective film of the present invention is excellent in adhesive properties, transparency, roll-out property from a rolled-up state and heat resistance, and is suitable as a surface protective film for optical use, building material use, and automotive part use.
  • the surface protective film of the present invention comprises at least two layers of a surface layer (A) and an adhesive layer (X).
  • the surface layer (A) is made of a propylene polymer.
  • propylene polymer examples include a propylene homopolymer, and a random or block copolymer of ethylene and / or an ⁇ -olefin having 4 to 20 carbon atoms together with propylene.
  • Examples of the ⁇ -olefin having 4 to 20 carbon atoms used in the random or block copolymer include 1-butene, 4-methylpentene-1, 1-hexene, 1-octene and the like.
  • Examples of such a copolymer include a propylene / ethylene copolymer, a propylene / 1-butene copolymer, and a propylene / ethylene / 1-butene copolymer.
  • the propylene polymer preferably has a melting point of 50 to 170 ° C., more preferably 70 to 170 ° C., more preferably 100 to 165 ° C., and most preferably 130 to 165 ° C. from the viewpoint of improving heat resistance.
  • the melting point is a value measured by a differential scanning calorimeter (DSC) at a temperature rising / falling rate of 10 ° C./min.
  • the propylene polymer preferably has a melt flow rate (hereinafter abbreviated as MFR) measured at 230 ° C. of preferably 0.01 to 500 g / 10 minutes, more preferably 0.1 to 100 g / 10 minutes, and still more preferably. It is in the range of 0.3 to 50 g / 10 minutes.
  • MFR melt flow rate
  • the propylene polymer is not only a solid titanium catalyst mainly composed of a solid titanium compound and an alkylaluminum compound, but also a homopolymerization of propylene in the presence of a metallocene compound, a metallocene catalyst, a geometrically constrained catalyst, etc. Alternatively, it can be obtained by copolymerizing ethylene and / or an ⁇ -olefin having 4 to 20 carbon atoms with propylene.
  • the surface roughness (Ra) of the surface layer (A) made of the propylene polymer is in the range of 0.2 to 2.0 ⁇ m from the viewpoint of transparency and feedability.
  • the surface roughness (Ra) is preferably 0.3 ⁇ m or more, and more preferably 0.4 ⁇ m or more.
  • the surface roughness (Ra) is preferably 1.5 ⁇ m or less, and more preferably 1.2 ⁇ m or less.
  • the surface roughness exceeds 2.0 ⁇ m, sufficient transparency cannot be obtained due to irregular reflection of light rays on the surface.
  • an example of the propylene polymer includes a method using a block copolymer of propylene and ethylene (hereinafter referred to as “propylene / ethylene block copolymer”).
  • the MFR (230 ° C.) of the propylene / ethylene block copolymer is preferably in the range of 3 to 20 g / 10 minutes, more preferably 4 to 15 g / 10 minutes.
  • the intrinsic viscosity ([ ⁇ ]) of the rubber component in the propylene / ethylene copolymer is preferably 2.0 dl / g or more.
  • an antistatic agent for the purpose of imparting antistatic properties and weather resistance to the surface protective film of the present invention, improving transparency and improving the appearance, an antistatic agent, a release agent, an oxidation agent It is also possible to add various additives such as inhibitors, weathering agents, crystal nucleating agents, and other resin modifiers such as other crystalline polyolefins such as polyethylene and polybutene, polyesters, polyamides, and elastomers.
  • the film is kneaded with a single-screw or twin-screw extruder, a feeder ruder, etc.
  • a single-screw or twin-screw extruder a feeder ruder, etc.
  • it may be directly put into a T-die molding machine equipped with an extruder to form the surface layer (A) of the surface protective film of the present invention.
  • any known pressure-sensitive adhesive used as the pressure-sensitive adhesive layer of the surface protective film can be used.
  • an olefin elastomer and / or a styrene elastomer is preferable. More preferably, it is an olefin elastomer or a composition comprising an olefin elastomer and a styrene elastomer.
  • an amorphous elastomer whose melting point is not observed in the range of 0 to 200 ° C. by DSC measurement (measured at a temperature rising / falling rate of 10 ° C./min), or is observed in the range of 0 to 200 ° C.
  • a microcrystalline elastomer in which a peak having a melting heat quantity of a melting point peak of 10 J / g or less is suitable, and more preferably, the amorphous elastomer or a microcrystalline elastomer having a melting heat quantity of a melting point peak of 7 J / g or less. It is.
  • the olefin-based elastomer includes an ⁇ -olefin polymer or copolymer having 2 to 20 carbon atoms, or a copolymer of ethylene and unsaturated carboxylic acid or unsaturated carboxylic acid ester.
  • ethylene / propylene copolymer ethylene / 1-butene copolymer, ethylene / 1-hexene copolymer, ethylene / 4-methylpentene-1 copolymer, ethylene / 1-octene copolymer , Propylene homopolymer, propylene / ethylene copolymer, propylene / ethylene / 1-butene copolymer, 1-butene homopolymer, 1-butene / ethylene copolymer, 1-butene / propylene copolymer, 4 -Methylpentene-1 homopolymer, 4-methylpentene-1 / propylene copolymer, 4-methylpentene-1 / 1-butene copolymer, 4-methylpentene-1 / propylene / 1-butene copolymer , Propylene / 1-butene copolymer, ethylene / vinyl acetate copolymer, ethylene / methacrylic acid cop
  • propylene homopolymer propylene / ethylene copolymer, propylene / 1-butene copolymer, and propylene / ethylene / 1-butene copolymer are preferable.
  • styrene elastomer a known styrene elastomer having a polystyrene phase as a hard segment can be used. Specifically, styrene / butadiene copolymer (SBR), styrene / isoprene / styrene copolymer (SIS), styrene / butadiene / styrene copolymer (SBS), and hydrides thereof (SEBS, SEPS, etc.) And styrene / isobutylene / styrene triblock copolymer (SIBS) and styrene / isobutylene diblock copolymer (SIB).
  • SIBS styrene / isobutylene / styrene triblock copolymer
  • SIB styrene / isobutylene diblock copolymer
  • SIBS styrene / isobutylene / styrene triblock copolymer
  • SIB styrene / isobutylene diblock copolymer
  • the adhesive layer (X) in the surface protective film of the present invention can be formed by using the olefin elastomer and / or styrene elastomer alone or by blending components having different compositions. Further, in the present invention, for the purpose of controlling the adhesive force, and within a range not impairing the effects of the present invention, polyolefins such as polyethylene and polypropylene, resin modifiers such as acid-modified polyolefin, polyester and polyamide, Various additives such as an inhibitor, a crystal nucleating agent and an antioxidant may be contained.
  • the olefin-based elastomer comprises 0 to 80% by weight and styrene-based elastomer 20 to 100% by weight. It is preferably composed of 0 to 75% by weight of olefin elastomer and 25 to 100% by weight of styrene elastomer, more preferably 5 to 75% by weight of olefin elastomer and 25 to 95% by weight of styrene elastomer.
  • the adhesive layer may contain other components as necessary, but in order to explain the ratio between the olefin-based elastomer and the styrene-based elastomer, the total of only these is displayed as 100% by weight. ing).
  • the adhesive layer (X) in the surface protective film of the present invention can be formed by using the olefin elastomer and / or styrene elastomer alone or by blending components having different compositions.
  • a polyolefin modifier such as polyethylene or polypropylene, an acid-modified polyolefin, a polyester, a polyamide, or a resin modifier, as long as the effect of the present invention is not impaired,
  • Various additives such as an antistatic agent, a crystal nucleating agent and an antioxidant may be contained.
  • the adhesive layer (X) composed of the olefin elastomer and / or styrene elastomer and, if necessary, a resin modifier or an additive is laminated with the surface layer (A), whereby the surface protective film of the present invention. It can be.
  • the adhesive strength of the surface protective film of the present invention to the acrylic plate is an index of the drawability and the adhesive strength to the adherend, and is preferably 1 N / 50 mm or more, more preferably in the range of 3 to 40 N / 50 mm, and more. Preferably, it is in the range of 5 to 30 N / 50 mm.
  • the adhesive strength is less than 1 N / 50 mm, the adherence to the adherend may not be sufficient, and when it exceeds 40 N / 50 mm, the rewinding property may deteriorate, which is not preferable.
  • the unwinding force of the surface protective film of the present invention refers to a peeling force when a roll-shaped film is unrolled, and serves as an index of unwinding property.
  • the unwinding force is 2.5 N / It is preferably 50 mm or less, more preferably in the range of 0.01 to 2.0 N / 50 mm.
  • the method for laminating the surface layer (A) and the adhesive layer (X) is not particularly limited, but known methods such as extrusion lamination and extrusion coating on the surface layer film obtained in advance by T-die molding or inflation molding.
  • At least one intermediate layer is also provided between the surface layer (A) and the adhesive layer (X).
  • middle layer Generally, crystalline polyolefins, such as a polypropylene and polyethylene with melting
  • modified polyolefin, polyolefin elastomer, styrene elastomer, polyester elastomer, or the like is used. Among these, from the viewpoint of productivity and transparency, it is preferable to use polypropylene or polyolefin elastomer as the intermediate layer.
  • the intermediate layer is an adhesive or a film for bonding the surface layer (A) and the pressure-sensitive adhesive layer (X).
  • the material may be configured as an adhesive layer.
  • the thickness of the surface layer (A) in the surface protective film of the present invention is usually 0.05 to 200 ⁇ m, preferably 0.5 to 100 ⁇ m, more preferably 1 to 30 ⁇ m, and still more preferably 1 to 15 ⁇ m.
  • the thickness of the pressure-sensitive adhesive layer (X) is usually 0.05 to 50 ⁇ m, preferably 0.3 to 40 ⁇ m, more preferably 0.5 to 30 ⁇ m.
  • the thickness of the surface protective film of the present invention is usually 0.1 to 500 ⁇ m, preferably 0.5 to 400 ⁇ m, more preferably 3 to 300 ⁇ m, including an intermediate layer which may be provided if necessary.
  • the haze measured at 50 ⁇ m according to JISK7105 is preferably in the range of 20 to 90%, particularly preferably in the range of 30 to 85%.
  • the number of fish eyes (FE number) of the surface protective film of the present invention is preferably 20 or less, more preferably 10 or less, 5 or less, and even more preferably 3 or less.
  • Adhesive strength Acrylic plate is cut into a width of 50 mm and a length of 125 mm under conditions of an air temperature of 23 ° C. ⁇ 2 ° C. and a humidity of 50% ⁇ 10%, a film sample is placed on the surface of the acrylic plate, and a 2 kg rubber roller Is attached to the acrylic plate by pressing the entire sample film with its own weight. Next, the peel force when peeled at a speed of 300 mm / min (180 degree peel) is measured, and the peel force per 50 mm width is defined as the adhesive strength (N / 50 mm).
  • Unwinding force Using a roll-shaped sample, the peeling force (N / 50 mm) when peeling from the roll at a speed of 300 mm / min is measured and defined as the unwinding force.
  • Example 1 The raw materials were respectively supplied to a three-type three-layer T-die molding machine having a die width of 500 mm, which was combined with a 30 mm ⁇ single screw extruder for the surface layer and the adhesive layer and a 40 mm ⁇ single screw extruder for the intermediate layer, and the surface layer thickness was 10 ⁇ m.
  • Example 1 shows the raw material which comprises the surface layer of an Example and a comparative example, an intermediate
  • Example 2 to 4 Comparative Examples 1 to 3
  • a surface protective film was obtained in the same manner as in Example 1 except that the resin compositions of the various layers were changed to the resin compositions shown in Table 1.
  • Table 1 shows the evaluation results of the obtained film.
  • the unwinding force is 0.1 to 1.6 N / 50 mm, and it can be seen that it has an excellent feeding property. This is because the surface roughness (Ra) is an appropriate roughness of 0.47 to 0.81 ⁇ m while having sufficient adhesive strength.
  • the haze is 60 to 70%, and the haze has excellent transparency as a surface protective film when it is required to have transparency of 80% or less. I understand.
  • Comparative Examples 1 and 2 the adhesive strength is 7 to 18 N / 50 mm, and sufficient adhesiveness is ensured.
  • the unwinding force is such that peeling does not occur and the feeding property is extremely high. It turns out that it is inferior. This is because in Comparative Examples 1 and 2, the surface roughness (Ra) was as extremely small as 0.25 ⁇ m and 0.05 ⁇ m, respectively, which made peeling difficult.
  • the surface roughness (Ra) is 0.28 ⁇ m
  • the adhesive strength is sufficient
  • the unwinding force is also 0.5 N / 50 mm, that is, the feeding property is good.
  • the surface layer is composed of a composition of h-PP and LDPE (Comparative Example 3)
  • the fish eye number (FE number) is large and is not suitable as a surface protective film.
  • the surface layer is made of a propylene polymer.
  • the surface protective film of the present invention is excellent in adhesive properties, transparency, unwinding property and heat resistance, and has a very high industrial utility value as a protective film for optical use, building material use and automobile part use.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

La présente invention se rapporte à un film de protection de surface doté d'une capacité d'adhésion élevée et d'excellentes caractéristiques de déroulement. Le film de protection de surface selon l'invention est caractérisé en ce que : le film de protection de surface comprend au moins deux couches, qui sont une couche de surface (a) et une couche adhésive (X) ; la couche de surface (a) comprend un polymère propylène et la rugosité de surface (Ra) de la couche de surface se situe dans une plage allant de 0,2 à 2,0 μm ; la résistance d'adhésion du film de protection de surface sur de l'acrylique est de 1 N/50 mm ; et la couche adhésive (X) est formée à partir d'un élastomère oléfinique et/ou d'un élastomère styrène.
PCT/JP2011/051865 2010-02-02 2011-01-31 Film de protection de surface Ceased WO2011096350A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011552761A JPWO2011096350A1 (ja) 2010-02-02 2011-01-31 表面保護フィルム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010021657 2010-02-02
JP2010-021657 2010-02-02

Publications (1)

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WO2011096350A1 true WO2011096350A1 (fr) 2011-08-11

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PCT/JP2011/051865 Ceased WO2011096350A1 (fr) 2010-02-02 2011-01-31 Film de protection de surface

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JP (1) JPWO2011096350A1 (fr)
KR (1) KR20120112846A (fr)
TW (1) TWI541129B (fr)
WO (1) WO2011096350A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013116626A (ja) * 2011-10-31 2013-06-13 Toyobo Co Ltd ポリオレフィン系フィルム
WO2013166294A1 (fr) * 2012-05-02 2013-11-07 Tredegar Film Products Corporation Film de protection de surface à faible force de décollage et méthode d'utilisation de celui-ci
US9203050B2 (en) 2013-05-21 2015-12-01 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same
JPWO2015190230A1 (ja) * 2014-06-10 2017-04-20 リンテック株式会社 ダイシングシート
JPWO2015178346A1 (ja) * 2014-05-23 2017-04-20 リンテック株式会社 保護膜形成用複合シート
WO2021004340A1 (fr) * 2019-07-05 2021-01-14 歌尔股份有限公司 Diaphragme de dispositif d'émission de son, et dispositif d'émission de son
US11145838B2 (en) 2013-05-21 2021-10-12 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same

Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2008068564A (ja) * 2006-09-15 2008-03-27 Dainippon Ink & Chem Inc 表面保護フィルム
JP2008115212A (ja) * 2006-11-01 2008-05-22 Mitsui Chemical Fabro Inc 表面保護フィルム
JP2008265302A (ja) * 2007-03-22 2008-11-06 Japan Polypropylene Corp プロピレン系表面保護用フィルム
JP2009166305A (ja) * 2008-01-15 2009-07-30 Toray Ind Inc 表面保護用ポリオレフインフイルムおよびその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008068564A (ja) * 2006-09-15 2008-03-27 Dainippon Ink & Chem Inc 表面保護フィルム
JP2008115212A (ja) * 2006-11-01 2008-05-22 Mitsui Chemical Fabro Inc 表面保護フィルム
JP2008265302A (ja) * 2007-03-22 2008-11-06 Japan Polypropylene Corp プロピレン系表面保護用フィルム
JP2009166305A (ja) * 2008-01-15 2009-07-30 Toray Ind Inc 表面保護用ポリオレフインフイルムおよびその製造方法

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013116626A (ja) * 2011-10-31 2013-06-13 Toyobo Co Ltd ポリオレフィン系フィルム
WO2013166294A1 (fr) * 2012-05-02 2013-11-07 Tredegar Film Products Corporation Film de protection de surface à faible force de décollage et méthode d'utilisation de celui-ci
CN104395078A (zh) * 2012-05-02 2015-03-04 屈德加薄膜产品股份有限公司 低剥离力的表面保护膜及其使用方法
US9138979B2 (en) 2012-05-02 2015-09-22 Tredegar Film Products Corporation Low peel force surface protection film and method of using same
CN104395078B (zh) * 2012-05-02 2016-08-31 屈德加薄膜产品股份有限公司 低剥离力的表面保护膜及其使用方法
US9203050B2 (en) 2013-05-21 2015-12-01 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same
US9614167B2 (en) 2013-05-21 2017-04-04 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same
US10038161B2 (en) 2013-05-21 2018-07-31 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same
US11145838B2 (en) 2013-05-21 2021-10-12 Samsung Display Co., Ltd. Organic light emitting diode display and method of manufacturing the same
JPWO2015178346A1 (ja) * 2014-05-23 2017-04-20 リンテック株式会社 保護膜形成用複合シート
JPWO2015190230A1 (ja) * 2014-06-10 2017-04-20 リンテック株式会社 ダイシングシート
WO2021004340A1 (fr) * 2019-07-05 2021-01-14 歌尔股份有限公司 Diaphragme de dispositif d'émission de son, et dispositif d'émission de son

Also Published As

Publication number Publication date
TWI541129B (zh) 2016-07-11
KR20120112846A (ko) 2012-10-11
JPWO2011096350A1 (ja) 2013-06-10
TW201136762A (en) 2011-11-01

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