WO2006132183A1 - 表面保護フィルム - Google Patents
表面保護フィルム Download PDFInfo
- Publication number
- WO2006132183A1 WO2006132183A1 PCT/JP2006/311229 JP2006311229W WO2006132183A1 WO 2006132183 A1 WO2006132183 A1 WO 2006132183A1 JP 2006311229 W JP2006311229 W JP 2006311229W WO 2006132183 A1 WO2006132183 A1 WO 2006132183A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protective film
- surface protective
- styrene
- rubber
- adhesive layer
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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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
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/005—Modified block copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- 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
- C09J125/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Adhesives based on derivatives of such polymers
- C09J125/02—Homopolymers or copolymers of hydrocarbons
- C09J125/04—Homopolymers or copolymers of styrene
- C09J125/08—Copolymers of styrene
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- 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
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- 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
- C09J153/005—Modified block copolymers
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- 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
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
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- 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
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
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- 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
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- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/387—Block-copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/24—Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
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- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/306—Applications of adhesives in processes or use of adhesives in the form of films or foils for protecting painted surfaces, e.g. of cars
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- 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
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- 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
- C09J2423/006—Presence of polyolefin in the substrate
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- 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
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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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
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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
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2883—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer of diene monomer [e.g., SBR, SIS, etc.]
Definitions
- the present invention relates to a surface protective film for preventing adhesion of dust to an adherend surface and damage to the adherend surface, and in particular, a rubber-based adhesive layer is laminated on one surface of a polyolefin-based substrate.
- the present invention relates to a surface protective film.
- a surface protective film is often attached to the surfaces of the articles and members.
- various adherends such as synthetic resin plates, metal plates, decorative plywood, painted steel plates, painted resin plates or various nameplates, especially the surfaces of coated steel plates and coated resin plates, these surfaces during processing and transportation
- Surface protection films are often used to prevent dirt from sticking to the surface and scratching the surface.
- This type of surface protective film has a structure in which an adhesive layer is laminated on one side of a film substrate.
- a film substrate made of thermoplastic resin is generally used.
- the surface protective film is affixed to the adherend surface using the adhesive force of the pressure-sensitive adhesive layer to protect the adherend surface.
- the surface protective film peels off the adherend surface force. Therefore, the surface protective film is required to have appropriate adhesiveness so that it can be easily attached to the surface of the adherend, and the surface strength of the adherend can be easily peeled after use. It is required to have good peelability. In addition, there is a strong demand not to contaminate the adherend surface after peeling with adhesive residue or the like.
- automobile bodies and parts that have been painted may be loaded onto trucks or ships and transferred to remote locations such as overseas.
- various suspended matters such as dust, dust, and rain adhered to the coating film, and the coating film was sometimes stained or discolored.
- the coating film could be damaged by the impact.
- a surface protective film is temporarily attached to the coating film surface and transferred to a remote place such as overseas.
- This type of surface protective film for protecting a coating film also has a structure in which an adhesive layer is laminated on one side of a film substrate.
- a film substrate a film made of a thermoplastic resin is generally used.
- the surface protective film has 1) sufficient initial adhesive strength, 2) good stability of adhesive strength over time, adhesive strength hardly varies with time, and 3) during peeling. It is required that it can be easily peeled off and hardly causes adhesive residue.
- Patent Document 1 discloses a surface protective film for protecting an automobile coating film in which a pressure-sensitive adhesive layer is laminated on the surface of a base material, and polyisobutylene is used as the pressure-sensitive adhesive layer. !
- the performance of the surface protection film can be improved by using polyisobutylene for the pressure-sensitive adhesive layer.
- the polyisobutylene-based pressure-sensitive adhesive is excellent in adhesive strength over time and peeling workability, but its SP value is very low, so it has an initial adhesive strength with the coated steel sheet. There was enough power. In other words, there was room for improvement in the initial adhesive strength 1) above.
- Patent Document 2 discloses a surface protective film using a pressure-sensitive adhesive layer that also has styrene-based elastomer power.
- the elastic modulus of the pressure-sensitive adhesive layer 1) the initial adhesive force is sufficient, and 2) the temporal stability of the adhesive force is enhanced.
- conjugated gen is used in a part of the elastomer of the soft segment, and hydrogen is added at the end. Industrially, it is difficult to completely add hydrogen to 100%. Sex was also not enough.
- Patent Document 3 discloses a block copolymer having at least two terminal polymer blocks A and at least one intermediate polymer block B, a tackifier resin, a softening agent, A pressure-sensitive adhesive composition containing a specific amount of adhesive is disclosed.
- Block A is aromatic A polymer block essentially derived from a Louis compound
- Block B is a polymer block essentially derived from isobutylene.
- the adhesive strength is less likely to decrease even when exposed to high temperatures of 70 ° C compared to natural rubber-based adhesives, and it is stable against heat. It is said to be excellent in stability.
- the pressure-sensitive adhesive composition of Patent Document 3 is mainly intended for permanent adhesive fixation, not as a surface protective film that requires re-peelability for protecting the article or member as described above. It was developed for use in various adhesive tapes and adhesive sheets. Therefore, even if this pressure-sensitive adhesive composition was applied to a coating film protective film, it did not sufficiently satisfy the performance required for the surface protective film.
- the adhesive strength with time may be inferior, and the adhesive strength may vary with time.
- Patent Document 1 Japanese Patent Laid-Open No. 6-73352
- Patent Document 2 Japanese Patent Laid-Open No. 2001-234149
- Patent Document 3 Japanese Patent Publication No. 7-57865
- An object of the present invention is to provide a surface protective film that eliminates the above-mentioned drawbacks of the prior art, has excellent initial adhesive strength, has excellent adhesive strength over time, and is particularly excellent in peeling workability. There is to serve.
- a surface protective film in which an adhesive layer containing a rubber-based resin component and a tackifying resin is laminated on a polyolefin-based substrate, wherein the rubber-based resin component is styrene.
- Block polymer block (A) and olefin polymer block (B) block copolymer, styrene polymer block (A) and block copolymer of styrene and olefins random block (B,) Copolymer, and styrene-based elastomer having Z or hydrogenated products thereof as the main skeleton, and the tensile storage elastic modulus force of the rubber-based adhesive layer at a frequency of 10 Hz-2.5 X 10 9 Pa at 100 ° C
- a surface protective film is provided in which the shear storage modulus at 10 Hz is in the range of 5 ⁇ 10 4 to 5 ⁇ 10 6 Pa at 23 ° C.
- the rubber-based resin component is a styrene-based elastomer comprising a block copolymer of a styrene-based polymer block (A) and an olefin-based polymer block (B).
- the block (B) is polyisobutylene.
- a block copolymer comprising the rubber-based resin component styrene-based polymer block (A) and the isobutylene-based polymer block (C).
- D is a mixture of a styrene-based polymer block (A) and a conjugated gen-based polymer block or a hydrogenated product thereof
- E a block copolymer (F) that also has a force.
- the ratio of the rubber-based resin component (A) force 60 to 97% by weight of the block copolymer (D) and 40 to 3% by weight of the block copolymer (F).
- Block copolymers (D) and (F) are included.
- the initial adhesive force to the adherend and the temporal stability of the adhesive force can be further enhanced. Further, for example, when attached to a steel plate, it is possible to more effectively prevent the natural peeling from the steel plate.
- the shear storage elastic modulus at a frequency of 10 Hz of the pressure-sensitive adhesive layer is 3 X 10 7 Pa or less at -30 ° C.
- the pressure-sensitive adhesive layer has a shear storage elastic modulus at a frequency of 10 Hz and a force of 2 ⁇ 10 5 Pa or more at 70 ° C.
- the pressure-sensitive adhesive layer in the pressure-sensitive adhesive layer, the pressure-sensitive adhesive further contains an olefin oligomer. More preferably, the olefin oligomer is blended at a ratio of 10 parts by weight or less with respect to 100 parts by weight of the rubber-based resin component.
- a surface protective film suitably used as the above-mentioned surface protective film, in particular, as a coating film protective sheet, and the polyolefin-based substrate is a weathering agent.
- the ultraviolet transmittance in the wavelength range of 190 to 370 nm of the polyolefin-based substrate is 10% or less.
- the surface protective film for protecting the coating film is temporarily attached to the coating film of an automobile or the like and transferred. Even when the protective film is exposed to sunlight or the like, the temperature rise of the surface protective film is suppressed, and the amount of ultraviolet rays passing through the polyolefin-based substrate and reaching the adhesive layer is reduced.
- the pressure-sensitive adhesive layer is difficult to deteriorate. Therefore, it is possible to effectively suppress the occurrence of adhesive residue on the surface of the coating film when the surface protective film is peeled off from the coating film. Furthermore, since the amount of ultraviolet rays that pass through the surface protective film and reach the coating film is reduced, deterioration of the coating film due to ultraviolet rays can also be suppressed.
- a pressure-sensitive adhesive layer comprising a rubber-based resin component, a tackifier resin, and an olefin oligomer is also laminated on a polyolefin-based substrate.
- a surface protective film is provided.
- the cohesive force of the pressure-sensitive adhesive is increased.
- the olefin oligomer is added in an amount of 10 parts by weight or less based on 100 parts by weight of the rubber-based resin component.
- the rubber-based pressure-sensitive adhesive layer of the surface protective film according to the present invention includes a rubber-based resin component.
- the rubber-based resin component comprises a block copolymer of a styrene polymer block (A) and an olefin polymer block (B), a styrene polymer block (A) and a styrene polymer block. And a random copolymer block ( ⁇ ′) of olefin and olefin, and a styrene elastomer having a main skeleton of ⁇ or a hydrogenated product thereof.
- the styrenic elastomer is the styrenic elastomer (1), (2) or (3) below.
- specific examples of the olefin-based polymer block (B) include a conjugated-gen polymer block and an isobutylene polymer block.
- the styrene-based elastomer is not particularly limited as long as the (A)-(B) block copolymer is a main skeleton.
- N is an integer of 1 or more
- X is a residue by a coupling agent.
- a styrene polymer block (A) and a random copolymer block of styrene and olefins such as conjugated diene and isobutylene (a styrene elastomer having a block copolymer with cocoon as a main skeleton.
- a styrene-based elastomer include the following (2-1) to (24).
- n is an integer of 1 or more
- X is a residue derived from a coupling agent.
- the olefins in the olefin polymer block (B) and the random copolymer block (B,) of the styrene elastomer used as the olefin polymer block include conjugates such as butadiene and isoprene, and isobutylene. Forces such as isobutylene are preferably used. That is, when polyisobutylene is used, it does not have an aliphatic unsaturated bond, so that hydrogenation is unnecessary, and thermal stability and weather resistance can be improved.
- the (3) styrene-based elastomer is composed of styrene and conjugated diene or isobutylene that is olefin.
- the content ratio of the components is preferably in the range of 5:95 to 60:40 by weight. The range is from 7:93 to 40:60.
- the configuration including the tapered block (G) constitutes a styrene-based elastomer.
- the total of the styrene content ratio which is the sum of the styrene content in the block (A) and the styrene content in the taper block (G) in the total monomer composition, is more preferably in the range of 5 to 50% by weight. in the range of 5 to 40 wt%, more good Mashiku ranges from 5 to 25 weight 0/0.
- the styrene content ratio in the block (A) in the total monomer composition constituting the styrene elastomer is preferably 3 to 20% by weight, more preferably 3% by weight or more.
- the unsaturated double bond is more hydrogen as needed as the less power is required to enhance heat resistance and weather resistance. It is preferable that it is added.
- a rubber-based resin component using isobutylene as an olefin is preferably used since an unsaturated bond does not remain after addition polymerization.
- a conjugated diene which is an olefin polymer block (B) At least 80% force of double bond of conjugation moiety in polymer block or random copolymer block ( ⁇ ') of styrene and olefin, which is olefin, is saturated by hydrogenation It is preferable.
- a more preferable ratio of hydrogenated coal is 90% or more, and further preferably 95 to 100%. If the rate of hydrogenation is less than 80%, the heat resistance may be inferior to the weather resistance.
- the measured weight average molecular weight in terms of polystyrene is preferably in the range of 30000-400000, more preferably in the range of 50000-200000.
- the weight average molecular weight is less than 30000, the cohesive force of the pressure-sensitive adhesive layer is lowered, and thus adhesive residue may be generated on the adherend when the surface protective film is peeled off.
- the weight average molecular weight exceeds 400,000, the adhesive strength is insufficient, and an increase in solution viscosity and melt viscosity may be caused during preparation of the pressure-sensitive adhesive composition and production of the surface protective film.
- a tackifier resin is further blended.
- the tackifier resin is not particularly limited as long as it can satisfy the aforementioned tensile storage modulus and shear storage modulus ranges when added to the rubber-based resin component.
- examples of such tackifier resins include aliphatic petroleum resins, alicyclic petroleum resins, aromatic petroleum resins, terpene resins, terpene 'phenolic resins, alkyl'phenolic resins.
- cocoa butter examples thereof include cocoa butter, coumarone indene rosin, rosin rosin, paraffinic oil, naphthenic oil, aromatic oil, castor oil, tall oil, natural oil, and liquid polyisobutylene rosin.
- Arakawa Chemical Co., Ltd. as alicyclic petroleum resin product name: Alcon, Yashara Chemical Co., Ltd. as terpene resin, product name: Clearon, Idemitsu Kosan Co., Ltd. as norafin oil
- Product name Diana process oil, Diana fleshia, liquid polyisobutylene resin manufactured by BASF, trade name: Glysopearl, etc.
- the tackifier resin is blended in the range of 5 to 70 parts by weight, more preferably 10 to 50 parts by weight, per 100 parts by weight of the rubber-based resin component. If the amount is less than 5 parts by weight, the shear storage modulus may be too high, and the adhesion to the adherend may be insufficient. If it exceeds 70 parts by weight, the cohesive strength of the pressure-sensitive adhesive will be insufficient, and the adherend strength may be difficult to peel off after use as a surface protective film, and adhesive residue may be left upon peeling.
- the rubber-based pressure-sensitive adhesive layer of the surface protective film according to the present invention has a tensile storage elastic modulus power at a frequency of 10 Hz — 2.5 ⁇ 10 9 Pa or more at 100 ° C.
- peeling is performed by a human hand. Average peel rate in this case Is more than 20mZ.
- the inventors of the present application have found that the adhesive strength of the pressure-sensitive adhesive layer to the adherend during peeling is equal to the tensile storage modulus at 1100 ° C at a frequency of 10 Hz. It was found that they were closely related and led to the present invention.
- the present inventors found for the first time that the tensile storage elastic modulus at ⁇ 100 ° C. is closely related to the peeling workability when peeling by hand.
- the tensile storage modulus By setting the tensile storage modulus at 100 ° C to a specific value, that is, 2.5 X 10 9 Pa or more, it can be smoothly applied without causing adhesive residue when peeled off by human hands. It provides a surface protective film that can be peeled off.
- the adhesive layer has a tensile storage elastic modulus at ⁇ 100 ° C of 2.5 ⁇ 10 9 Pa or more, which gives excellent workability when peeling by human hands It was not possible for those skilled in the art to anticipate the effects of the above. That is, the structure having a tensile storage elastic modulus of 2.5 ⁇ 10 9 Pa or more at the above 100 ° C. exhibits an unpredictable effect for those skilled in the art.
- the upper limit value of the tensile storage modulus at ⁇ 100 ° C. in the frequency 1013 ⁇ 4 is not particularly limited, but the range that can be confirmed at this time is 5 ⁇ 10 9 Pa at the maximum.
- a force SEBS in which a rubber adhesive layer mainly composed of SEBS (polymer of styrene / ethylene / butylene / styrene) is formed on one side of a polyolefin-based substrate, is used.
- the rubber-based adhesive layer used has a tensile storage modulus at 100 ° C of less than 2.5 X 10 9 Pa and does not satisfy the condition of 2.5 X 10 9 Pa or more.
- the shear storage elastic modulus at a frequency of 10 Hz of the rubber-based pressure-sensitive adhesive layer is 23, and needs to be in the range of 5 10 4 to 51 ( ⁇ 1 ⁇ 2. Shear storage elastic modulus. If the thickness exceeds this range, the surface protective film peels off from the adherend during transportation due to insufficient adhesion, and if it falls below it, the tensile storage elastic modulus at 100 ° C decreases, resulting in poor workability in the peeling process. There is a risk that glue may be left behind during peeling.
- surface protection is achieved by setting the tensile storage elastic modulus at ⁇ 100 ° C. at a frequency of 10 Hz and the shear storage elastic modulus at 23 ° C. within the specific ranges described above.
- the film has (1) initial adhesive strength, (2) stability of adhesive strength with time, and (3) peeling workability.
- the rubber-based resin component in the pressure-sensitive adhesive layer of the surface protective film may contain at least two types of rubber-based resin components.
- the rubber-based resin component includes a block copolymer (D) composed of a styrene polymer block (A) and an isobutylene polymer block (C), a styrene polymer block (A), and a conjugate gene. It is a styrene-based elastomer having a mixture force with a block copolymer (F) having a block copolymer (F) or a hydrogenated product thereof or a hydrogenated product thereof.
- the block copolymer (D) is a block copolymer of the styrene polymer block (A) and the olefin polymer block (B), a styrene polymer block ( Block copolymer of A) and random copolymer block (B,) of styrene and olefin, and olefin in styrene elastomer having Z or a hydrogenated product thereof as the main skeleton is composed of isobutylene.
- the block copolymer (F) is one in which olefin is also a conjugated jean.
- the shear storage modulus of the pressure-sensitive adhesive layer at a frequency of 10 Hz is preferably 3 ⁇ 10 7 Pa or less at ⁇ 30 ° C.
- the temperature of the surface protective film may be lower than 0 ° C.
- the adhesive strength of the surface protective film is lowered, and the surface protective film may be peeled off naturally due to the adherend strength.
- the inventors of the present application have found that the natural peeling phenomenon of the surface protective film when stored outdoors in winter is the adhesive strength between the adhesive layer and the adherend at 5 ° C. I found that they are correlated. Specifically, the peel rate dependency of the adhesive strength between the adhesive layer and the adherend at 5 ° C was evaluated, and if it was a rubber-like peel in the region where the peel rate was 30 mmZ or less, it could be used outdoors in winter. It became clear that the surface protective film did not peel from the adherend during storage, and the temporary attachment state could be sufficiently maintained.
- the adhesive force between the pressure-sensitive adhesive layer and the adherend at 5 ° C was closely related to the shear storage property ratio at 30 ° C, and the present invention was made. . That is, the present inventor found for the first time that the above-mentioned shear storage modulus at 30 ° C is closely related to the natural peeling phenomenon of the surface protective film when stored outdoors in winter. In the present invention, the shear storage modulus at 30 ° C. is a specific value, that is, 3 ⁇ 10 7 Pa or less.
- the surface protective film has particularly good initial adhesive strength. At the same time, it is possible to sufficiently maintain the temporary attachment state in which the surface protective film does not peel off the adherend strength when stored outdoors in winter.
- the shear storage elastic modulus at 10 Hz of the pressure-sensitive adhesive layer is preferably 2 X 10 5 Pa or more at 70 ° C.
- the shear storage modulus at a frequency of 10 Hz of the pressure-sensitive adhesive layer is 2 ⁇ 10 5 Pa or more at 70 ° C., it is more excellent in the stability of the adhesive strength over time and can suppress fluctuations in the adhesive strength over time. it can. If the shear storage modulus is less than 2 X 10 5 Pa at 70 ° C, the adhesive force may vary with time.
- the polyolefin constituting the polyolefin-based substrate is not particularly limited, and polyolefins such as polypropylene and polyethylene, and polyolefins mixed with polyolefin elastomer can be used.
- the thickness of the polyolefin-based substrate is preferably a force of 20-100 ⁇ m, which varies depending on the purpose of use. Below 20 m, the protective performance of the adherend such as a coating film is fully demonstrated. It may not be possible, and at 100 / zm or more, it may be expensive and difficult to produce.
- additives that are usually blended in this field to the polyolefin-based substrate.
- additives include stabilizers such as light resistance agents and anti-oxidation agents that can be added to the pressure-sensitive adhesive layer, as well as lubricants, antistatic agents, antifungal agents, pigments and the like.
- a weathering agent is preferably added to the polyolefin-based substrate.
- an ultraviolet shielding agent and Z or ultraviolet stabilizer are preferably used.
- the ultraviolet screening agent examples include inorganic pigments such as titanium oxide, zinc oxide, calcium carbonate, and carbon black. These may be used singly or may be used by blending a plurality of them. Of these, titanium oxide is particularly preferably used because of its excellent ultraviolet shielding properties.
- UV stabilizer examples include UV absorbers such as salicylic acid, benzophenone, benzotriazole, and cyanoacrylate, and light stabilizers such as hindered amine compounds. These may be used alone or in combination of two or more.
- an olefin oligomer is further blended in the pressure-sensitive adhesive composition constituting the above-mentioned pressure-sensitive adhesive layer, in addition to the rubber-based resin component and the tackifier resin.
- olefin-based oligomers examples include ethylene-based oligomers and propylene-based oligomers.
- oligomer refers to those having a polystyrene equivalent number average molecular weight of about 10,000 or less as determined by GPC.
- ethylene-based oligomers include ethylene homo-oligomers, ethylene-acrylic acid oligomers, ethylene acetate butyl oligomers, ethylene maleic anhydride oligomers, and the like.
- ethylene homo-oligomer is manufactured by Honeywe 11 company, product name: A—C6, 6A, Mitsui Chemicals, product name: exelex, Sanyo Kasei Co., Ltd.
- propylene-based oligomer examples include propylene homo-oligomer, propylene-ethylene oligomer, and propylene maleic anhydride oligomer.
- the propylene homo-oligomer is manufactured by Sanyo Kasei Co., Ltd., trade name: Viscol, manufactured by Clariant Co., Ltd., trade name: Lycocene PP6102, 6050M
- the propylene ethylene oligomer is manufactured by Clariant Co., Ltd., trade name: Licocene PP4202, 1302, 1502 1602, as an oligomer of propylene-maleic anhydride, Clariant's product name: Recommon.
- the olefin-based oligomer is preferably blended in an amount of 0.1 to L0 parts by weight, more preferably 1 to 6 parts by weight with respect to 100 parts by weight of the rubber-based resin component. If the blending ratio of the olefin oligomer is less than 0.1 part by weight, the effect of adding the olefin oligomer may be insufficient, and thus there is a risk that sufficient adhesive residue reliability on the adherend cannot be obtained. When the proportion of the polyolefin-based oligomer exceeds 10 parts by weight, the compatibility with the rubber-based resin is deteriorated, and the temporal stability of the adhesive force to the adherend may be deteriorated.
- the olefin oligomer used in the present invention is preferably compatible with the rubber-based resin to be added.
- the compatibility between the olefin oligomer and the rubber-based resin it is possible to develop the adhesive stability over time and the excellent adhesive residue stability over time.
- haze is measured in liquid paraffin using a cell with an optical path length of 10 mm according to JIS K 7105. It shall be compatible when the haze is 20% or less, and not compatible when the haze exceeds 20%.
- an olefin-based resin as the polyolefin-based substrate that is well compatible with the olefin-based oligomer. In this case, it is compatible with rubber-based resin.
- the combination of olefin-based resin having excellent compatibility and olefin-based oligomer includes propylene-based polymer (homopolymer, block copolymer, random copolymer), propylene-based oligomer, propylene-based polymer (block copolymer, random copolymer)
- propylene-based polymer block copolymer, random copolymer
- Examples include ethylene oligomers, ethylene polymers and ethylene oligomers.
- a pressure-sensitive adhesive composed of a pressure-sensitive adhesive composition including a rubber-based resin component other than the specific styrene-based elastomer described above, a tackifier resin, and an olefin-based oligomer is laminated on a polyolefin-based substrate.
- the rubber-based resin component preferably uses the above-mentioned styrene-based elastomer, and other rubber-based resin components such as polyisobutylene and butyl rubber are used. May be.
- the above-mentioned styrene elastomer is used.
- the pressure-sensitive adhesive layer may contain a stabilizer such as a light-proofing agent or an acid-proofing agent, an adhesion progressing preventing agent, or the like as long as the adhesive performance is not impaired. May be added.
- the light stabilizer is not particularly limited, and examples thereof include UV absorbers such as salicylic acid, benzophenone, benzotriazole, and cyanoacrylate, and light stabilizers such as hindered amine compounds. And phenolic type (monophenol type) Bisphenol, polymer type phenol), sulfur, phosphorus and the like.
- anti-adhesion progress agent examples include fatty acid amides, polyethyleneimine long-chain alkyl grafts, soybean oil-modified alkyd resin (for example, Arakawa Chemical Co., Ltd., trade name "Arakide 251"), tall oil-modified Examples thereof include alkyd resin (for example, Arakawa Chemical Co., Ltd., trade name “Arakide 6300”, etc.).
- a surface protective film suitable for protecting a coating film for automobiles has a polyolefin-based substrate containing the above-mentioned weathering agent, and the wavelength of the polyolefin-based substrate is 190 to 370 nm.
- the film for surface protection having an adhesive layer comprising an adhesive composition comprising a rubber-based resin component containing the above-mentioned styrene-based elastomer and a tackifying resin, and having an ultraviolet transmittance in the range of 10% or less. is there.
- Film protective films particularly automotive film protective films, have sufficient weather resistance by setting the ultraviolet transmittance in the wavelength range of 190 to 370 nm to 10% or less. Become. A preferable ultraviolet transmittance is 1% or less. In order to achieve such a range, the design may be made in consideration of the blending amount of the UV blocker or UV absorber and the thickness of the substrate. In addition, since there is an advantage that the temperature rise on the coating surface can be suppressed, it is effective to add an ultraviolet blocking agent having a heat ray reflecting function such as titanium oxide.
- the surface protective film for protecting a coating film according to the present invention is temporarily attached to the coating film via an adhesive layer.
- the ultraviolet light when ultraviolet light is irradiated to the temporarily attached surface protective film, the ultraviolet light reaches the pressure-sensitive adhesive layer attached to the coating film through the polyolefin-based substrate.
- the ultraviolet transmittance of the polyolefin-based substrate is in the above specific range, not only the polyolefin-based substrate but also the deterioration of the pressure-sensitive adhesive layer attached to the coating film is effectively suppressed. Can do.
- the adhesive layer attached to the coating film hardly deteriorates, it is possible to effectively suppress the occurrence of adhesive residue on the coating film surface when the coating film surface protective film is peeled off. Furthermore, since the amount of ultraviolet rays that pass through the surface protective film and reach the coating film is also reduced, deterioration of the coating film due to ultraviolet rays can be suppressed.
- the effect obtained when the shear storage modulus of the pressure-sensitive adhesive layer at ⁇ 30 ° C. at a frequency of 10 Hz is 3 ⁇ 10 ⁇ Pa or less is as described above.
- the frequency of the adhesive layer is 10
- the shear storage modulus at Hz should be in the range of 5 x 10 4 to 5 x 10 6 Pa at 23 ° C. If the shear storage modulus is outside this range, the surface protective film may peel off naturally from the coating during transportation due to insufficient adhesive strength, or the workability during peeling may be poor.
- the surface protective film has particularly good initial adhesive strength. At the same time, it is possible to sufficiently maintain a temporary wearing state in which the surface protective film does not peel from the coating film when stored outdoors in winter.
- the shear storage modulus at 10 Hz at 70 ° C. is preferably 2 ⁇ 10 5 Pa or more. The reason for this is also as described above.
- the surface protective film of the present invention is suitably used as a surface protective film for protecting a coating film, but is not limited to a coating film and can be applied to various adherends.
- it can be suitably used to protect the surface of an adherend such as a synthetic material such as acrylic resin or a polar material such as metal. Even in such a case, it is possible to obtain a good peeling performance that hardly causes adhesive residue. That is, the adherend surface to which the surface protective film of the present invention is applied is not particularly limited.
- the method for producing the surface protective film is not particularly limited.
- the pressure-sensitive adhesive composition constituting the pressure-sensitive adhesive layer and the composition constituting the polyolefin-based substrate are co-extruded to form a monolithic laminate.
- a method of laminating and integrating the polyolefin base material and the pressure-sensitive adhesive composition by coextrusion a known method such as an inflation method or a T-die method can be used.
- a solution coating method for applying a pressure-sensitive adhesive solution, a dry lamination method, an extrusion coating method using a T-die, or the like is used.
- the co-extrusion method using a T-die is preferable because the quality can be improved and the production can be economical.
- a primer is previously applied to the polyolefin base material. However, it is preferable to perform a surface treatment.
- a rubber-based adhesive layer is laminated on a polyolefin-based substrate, and the rubber-based resin component power constituting the rubber-based adhesive layer is the above specific styrene.
- the tensile storage modulus of the adhesive layer at a frequency of 10 Hz is ⁇ 100 ° C over 2.5 X 10 9 Pa, and the shear storage modulus at 10 Hz is 23 ⁇ 5 5 ⁇ 10 4 Since it is in the range of ⁇ 5 X 10 6 Pa, as described above, (1) excellent initial adhesive strength and can be securely attached to the surface of the adherend. It can prevent the adhesion of dust and scratches.
- FIG. 1 is a schematic front sectional view of a surface protective film as one embodiment of the present invention.
- FIG. 1 is a schematic front sectional view showing a surface protective film as one embodiment of the present invention.
- a surface protective film 1 in which an adhesive layer 3 was laminated on one side of a polyolefin-based substrate 2 was prepared and evaluated.
- SEBS (l); manufactured by Kraton Polymers, number: Clayton G1657, a block copolymer of styrene and ethylene 'butylene (styrene content: 13 wt 0/0 of the total monomers)
- SEBS (2) manufactured by Asahi Kasei Corporation, product number: Tuftec H1052, a block copolymer of styrene and ethylene 'butylene (styrene content 20 wt 0/0 of the total monomers)
- SEBS (3) manufactured by Asahi Kasei Corporation, product number: Tuftec H1221, block copolymer of styrene and ethylene'butylene (styrene content 12% by weight)
- Glysopearl VI 90 manufactured by BASF, liquid polyisobutylene resin
- Glysopearl V500 manufactured by BASF, liquid polyisobutylene resin
- Opanol B15 manufactured by BASF, liquid polyisobutylene resin
- PEX6800A Titanium oxide manufactured by Tokyo Ink Co., Ltd., trade name: PEX6800A White UVT- 52; Hindered amine light stabilizer manufactured by Tokyo Ink Co., Ltd., trade name: PPM UVT-52
- Adhesive composition containing 100 parts by weight of SIBS (2) as a styrene elastomer and 20 parts by weight of an alicyclic saturated petroleum resin (trade name: Alcon P125, manufactured by Arakawa Chemical Co., Ltd.) as a tackifier resin , Polypropylene (San Aromar, product number: PB170A) and a polypropylene substrate layer that is also effective are co-extruded by the T-die method, and a rubber adhesive with a thickness of 10 ⁇ m on a polypropylene substrate with a thickness of 50 ⁇ m. A surface protective film on which the agent layer was laminated was obtained.
- a surface protective film was obtained in the same manner as in Example 1 except that the styrene-based elastomer and tackifier resin used and the blending ratio thereof were changed as shown in Table 1 below.
- the (1) shear storage modulus and (2) tensile storage modulus of the rubber-based pressure-sensitive adhesive layer in each surface protective film obtained as described above were determined in the following manner.
- (3) initial adhesive strength, (4) initial peel strength, (5) temporal adhesive strength, and (6) adherend contamination evaluation of the obtained surface protective film were performed as follows. The results are shown in Table 1 below.
- the shear storage elastic modulus of the rubber-based adhesive layer was measured using a dynamic viscoelasticity spectrum measurement device (IT Measurement Control Co., Ltd., product number: DVA200) at a frequency of 10 Hz and a heating rate of 6 ° CZ for 50 ° C to +1 50 Measurements were made in the range of ° C, and the respective shear storage moduli at 30 ° C, 23 ° C and 70 ° C were determined.
- a dynamic viscoelasticity spectrum measurement device I Measurement Control Co., Ltd., product number: DVA200
- the tensile storage modulus of the obtained rubber-based pressure-sensitive adhesive layer was measured using a dynamic viscoelasticity spectrum measurement device (I T tensile control modulus at ⁇ 100 ° C. was measured in a range of ⁇ 100 ° C. to + 50 ° C. at a frequency of 10 ° ⁇ and a temperature increase rate of 6 ° C.Z by T Measurement Control Co., Ltd., product number: DVA200).
- the obtained surface protective film was applied to a coated steel sheet for automobiles (alkyd'melamine coating, 80% daros on the surface) in an environment of room temperature 23 ° C and relative humidity 65%, respectively, using a 2kg pressure-bonded rubber roller. After pasting at a speed of 300 mmZ and leaving in that state for 30 minutes, in accordance with JIS Z0237, a 180 degree peel strength at a width of 25 mm was measured at a speed of 300 mmZ. The peel strength measured in this manner was taken as the initial adhesive strength.
- the obtained surface protective film was applied to a coated steel sheet for automobiles (alkyd'melamine coating, 80% daros on the surface) in an environment of room temperature 23 ° C and relative humidity 65%, respectively, using a 2kg pressure-bonded rubber roller. After pasting at a speed of 300 mmZ and leaving in that state for 30 minutes, in accordance with JIS Z0237, the 180 degree peel strength at 25 mm width was measured at a speed of 30 mZ. The peel strength measured in this way was taken as the initial peel force.
- the obtained surface protective film was affixed to a coated steel sheet for automobiles in the same manner as in the initial peel force measurement of (4), and was left in that state in a gear oven at 70 ° C for 7 days, then JI S Z0237 The 180 degree peel strength at 25mm width was measured at a speed of 300mmZ.
- Example 3 although the initial adhesive strength was as high as 5.7 NZ25 mm, the initial peel strength remained at a low value of 1.2 NZ25 mm, and excellent peeling workability was achieved. I understand that. This is because the tensile storage modulus at 100 ° C is as high as 3.8 X 10 9 Pa.
- block copolymer (D) 70 parts by weight of SIBS (2) manufactured by Kanechi Co., Ltd. and 30 parts by weight of SEBS (2) manufactured by Asahi Kasei Co., Ltd. as block copolymer (F) are mixed together.
- the SIBS which is the block copolymer (D)
- the SIBS which is the block copolymer (D)
- the SEBS which is a block copolymer (F)
- the SEBS is a block copolymer of styrene, ethylene, butylene, and styrene, and is a hydrogenated product of a styrene polymer block (A) and a butadiene polymer block ( E).
- the rubber-based pressure-sensitive adhesive layer made of this pressure-sensitive adhesive and the base material layer made of polypropylene cover were coextruded by a T-die method, and 10 ⁇ m on a polypropylene base material having a thickness of 50 ⁇ m.
- a surface protective film having a rubber-based pressure-sensitive adhesive layer having a thickness of 5 mm was obtained.
- Example 6 Same as Example 6 except that the blending ratio of block copolymer (D) and block copolymer (F) and tackifying resin type and blending ratio were changed as shown in Table 2 below. Thus, a surface protective film was obtained.
- each surface protective film obtained as described above had a shear storage modulus of ⁇ 30 ° C, 23 ° C, and 70 ° C, a tensile storage modulus at ⁇ 100 ° C, and a surface protective film.
- Example 1 except that (1) initial adhesive strength, (2) initial peel strength, and (3) time-dependent adhesive strength were replaced with a stainless steel plate (SUS304, No. 280 polished surface). The same evaluation was made, and (4) the constant load holding force was evaluated in the following manner.
- the obtained surface protective film was attached to a stainless steel plate (SUS304, No. 280 having a polished surface 280) in the same manner as in the initial adhesive force measurement in (1), and then one end of the film in the longitudinal direction. was peeled off to form a grip allowance, and a test line was held horizontally with a marked line at the peeling boundary and the film attachment surface facing downward. After leaving it in that state for 30 minutes, a 60gZ25mm weight was suspended from the gripping allowance, and the drop time at a width of 25mm was measured.
- a stainless steel plate SUS304, No. 280 having a polished surface 280
- the measurement length was 50 mm
- the measurement temperature was 40 ° C
- a sample that exceeded 50 mm and was peeled off was determined to be dropped.
- a rubber-based pressure-sensitive adhesive composition containing 100 parts by weight of SIBS (1) as a styrene-based elastomer that is a rubber-based resin component and 20 parts by weight of Dianaflexia P-430 as a tackifier resin was prepared.
- Coating was performed in the same manner as in Example 11 except that the types and blending ratios of the polyolefin base material, rubber resin component and tackifying resin used were changed as shown in Tables 3 and 4 below. A membrane protective sheet was obtained.
- Example 2 In the same manner as in Example 1, the (1) shear storage modulus and (2) tensile storage modulus of the rubber-based pressure-sensitive adhesive layer in each of the obtained coating film protective sheets were determined. In addition, (3) initial adhesive strength, (4) initial peel strength, and (5) temporal adhesive strength of each coating film protective sheet were evaluated in the same manner as in Example 1. Further, (6) the contamination of the coating film surface was evaluated in the following manner.
- the rubber adhesive layer side force is also adhered, and in accordance with JIS B 7751, a sunshine carbon arc The test was conducted for 1000 hours. Next, after leaving at room temperature for 3 hours, the coating film protective sheet was peeled off. Presence or absence of adhesive residue on the surface of the coating after peeling The presence or absence of whitening of the film was evaluated according to the following evaluation criteria. Regarding the adhesive residue evaluation, the portion corresponding to the peripheral edge of the coating film protective sheet was examined.
- the ultraviolet transmittance in the wavelength range of 190 to 370 nm was measured and evaluated according to the following evaluation criteria.
- UV transmittance is 10% or less
- a surface protective film was obtained by changing the types and blending ratios of the base material, rubber-based resin component and tackifying resin used as shown in Table 6 below.
- Example 1 shows (3) initial adhesive strength, (4) initial peel strength, and (5) time-dependent adhesive strength for Sarakuko, the coated steel plate, acrylic plate, and stainless steel plate (SUS304, with 280 polished surface). (6) Evaluation of adhesive residue was performed in the same manner as the contamination evaluation of the adherend of Example 11 (also transferred to Tables 5 and 6 when evaluated).
- a composition was prepared.
- This pressure sensitive adhesive composition Rubber adhesive layer and polypropylene (block polypropylene made by Sanalomar, product number:
- a base layer made of PB170A) was coextruded by a T-die method to obtain a surface protective film in which a 10 ⁇ m thick rubber-based pressure-sensitive adhesive layer was laminated on a 50 ⁇ m thick polypropylene base material.
- a surface protective film was obtained in the same manner as in Example 1 except that the types and blending ratios of the rubber-based resin components and tackifying resins used were changed as shown in Tables 7 and 8 below. .
- the surface of the coated steel sheet for automobiles (surface daros 80%) (steel sheet A) and the coated steel sheet for automobiles after coating the surface protection film from the rubber adhesive layer side at room temperature 23 ° C and relative humidity 65% was applied to a coated steel sheet for automobiles (steel B), which was roughened with sandpaper (# 1200), using a 2 kg pressure-bonded rubber roller, at a speed of 300 mmZ, and left in that state for 30 minutes.
- 180 ° peel strength at 25 mm width was performed at a rate of 300 mmZ while being heated to 70 ° C.
- the adhesive residue on the coating film at this time was evaluated as follows.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/916,801 US20090117379A1 (en) | 2005-06-06 | 2006-06-05 | Surface protection film |
EP06756975A EP1889888A4 (en) | 2005-06-06 | 2006-06-05 | SURFACE PROTECTION FILM |
Applications Claiming Priority (4)
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JP2005165798 | 2005-06-06 | ||
JP2005-165798 | 2005-06-06 | ||
JP2005-318547 | 2005-11-01 | ||
JP2005318547A JP2007126512A (ja) | 2005-11-01 | 2005-11-01 | 表面保護フィルム |
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WO2006132183A1 true WO2006132183A1 (ja) | 2006-12-14 |
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PCT/JP2006/311229 WO2006132183A1 (ja) | 2005-06-06 | 2006-06-05 | 表面保護フィルム |
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US (1) | US20090117379A1 (ja) |
EP (1) | EP1889888A4 (ja) |
KR (1) | KR20080013998A (ja) |
WO (1) | WO2006132183A1 (ja) |
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WO2009028455A1 (ja) * | 2007-08-27 | 2009-03-05 | Lintec Corporation | 再剥離型粘着シートおよび不完全硬化塗膜の保護方法 |
EP1976952A4 (en) * | 2006-01-24 | 2010-01-13 | 3M Innovative Properties Co | ADHESIVE ENCAPSULATION COMPOSITION FILM AND ORGANIC ELECTROLUMINESCENCE DEVICE |
US20100028664A1 (en) * | 2006-08-10 | 2010-02-04 | Tesa Ag | Self-adhesive material of hydrogenated block copolymers and protective film for smooth surfaces made thereof |
US20110033662A1 (en) * | 2009-07-23 | 2011-02-10 | Nitto Denko Corporation | Laminated film and pressure-sensitive adhesive tape |
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KR101132760B1 (ko) * | 2008-12-05 | 2012-04-06 | 코오롱인더스트리 주식회사 | 보호필름 |
JP5987293B2 (ja) * | 2010-12-01 | 2016-09-07 | 東洋紡株式会社 | 粘着剤及び粘着フィルム |
JP2016196650A (ja) * | 2010-12-01 | 2016-11-24 | 東洋紡株式会社 | 粘着剤及び粘着フィルム |
WO2013047690A1 (ja) | 2011-09-29 | 2013-04-04 | 三菱化学株式会社 | 水素化ブロック共重合体、樹脂組成物、フィルム及び容器 |
DE102011085034A1 (de) * | 2011-10-21 | 2013-04-25 | Tesa Se | Klebemasse insbesondere zur Kapselung einer elektronischen Anordnung |
TWI470049B (zh) | 2012-12-06 | 2015-01-21 | Chi Mei Corp | 可剝離型黏著劑組成物及其應用 |
JP6166625B2 (ja) * | 2013-09-10 | 2017-07-19 | 株式会社カネカ | 粘着剤組成物 |
KR20150037593A (ko) * | 2013-09-30 | 2015-04-08 | 주식회사 엘지화학 | 기재 필름, 이를 포함하는 적층 구조체 및 디스플레이 소자 |
KR102408702B1 (ko) * | 2018-11-29 | 2022-06-14 | (주)엘엑스하우시스 | 자동차 도막 보호용 시트 및 이의 제조방법 |
CN111763482A (zh) * | 2020-07-06 | 2020-10-13 | 东莞市通利新材料科技有限公司 | 制程保护膜及其制备方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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EP1976952A4 (en) * | 2006-01-24 | 2010-01-13 | 3M Innovative Properties Co | ADHESIVE ENCAPSULATION COMPOSITION FILM AND ORGANIC ELECTROLUMINESCENCE DEVICE |
US20100028664A1 (en) * | 2006-08-10 | 2010-02-04 | Tesa Ag | Self-adhesive material of hydrogenated block copolymers and protective film for smooth surfaces made thereof |
WO2009028455A1 (ja) * | 2007-08-27 | 2009-03-05 | Lintec Corporation | 再剥離型粘着シートおよび不完全硬化塗膜の保護方法 |
US20110033662A1 (en) * | 2009-07-23 | 2011-02-10 | Nitto Denko Corporation | Laminated film and pressure-sensitive adhesive tape |
Also Published As
Publication number | Publication date |
---|---|
EP1889888A4 (en) | 2010-07-07 |
EP1889888A1 (en) | 2008-02-20 |
KR20080013998A (ko) | 2008-02-13 |
US20090117379A1 (en) | 2009-05-07 |
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