CN202671480U - Surface protective sheet - Google Patents
Surface protective sheet Download PDFInfo
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- CN202671480U CN202671480U CN 201220051497 CN201220051497U CN202671480U CN 202671480 U CN202671480 U CN 202671480U CN 201220051497 CN201220051497 CN 201220051497 CN 201220051497 U CN201220051497 U CN 201220051497U CN 202671480 U CN202671480 U CN 202671480U
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Abstract
The utility model provides a surface protective sheet with a bonding layer formed at one side of a substrate layer. The surface protective sheet is good in adhesive force with all kinds of adherend bodies, excellent in tear resistance, outstanding in weather resistance, little in adhesive force increase even for an outdoor use or for storage under high temperature conditions and good in stripping performance when being stripped from the adherend bodies. With the bonding layer formed at the one side of the substrate layer, the substrate layer is a polyolefin resin layer with initial modulus of elasticity more than 5000kg/cm<2> measured by Japanese industrial standards (JIS)-K-7127. The substrate layer at least comprises two layers, that is, a white layer and a black layer. The bonding layer is a styrene resin layer with the initial modulus of elasticity 1 kg/cm<2> to 5000kg/cm<2> measured by the JIS-K-7127.
Description
Technical field
The utility model relates to a kind of surface protective plate.Specifically; the utility model relates to the surface protective plate that can use in following purposes etc.; namely; such as to metal sheet, application the member such as metal sheet, aluminum alloy frame, resin board, decorative steel plate, pvdc layer laminated steel, sheet glass carry, when processing or maintenance etc., be attached to these component surface and protected.
Background technology
As necessary characteristic for surface protective plate, can enumerate following characteristic, that is, and on being attached at by adherend after, do not have floating or peeling off of this surface protective plate, peeling off on bonding coat can not remain in by adherend when removing.Particularly; during before surface protective plate is peeled off at high temperature or carry out under the inferior harsh condition of outdoor exposure when being attached the operation of this surface protective plate by adherend; the effects on surface screening glass, in the necessary above-mentioned characteristic, then require the characteristic of higher level.In addition, need to suppress to be attached to the situation of splitting when being peeled off by the surface protective plate on the adherend.
In the past, in the bonding coat of the surface protective plate that generally uses, use in natural rubber or modified natural rubber, cooperate an amount of tackifier etc. and natural rubber be tackiness agent.This kind surface protective plate does not have special problem with regard to indoor use.But, because natural rubber is that tackiness agent has unsaturated double-bond in its structure, therefore be exposed in the outdoor situation, can cause molecular breakdown because of ultraviolet ray.Thus, be the surface protective plate of tackiness agent when peeling off having used natural rubber, can produce adhesive residue in by the problem in the adherend.Thus, wish to have the good surface protective plate of weathering resistance.In addition, also have and to be attached at splintery problem when being peeled off by the surface protective plate on the adherend.
In order to address the above problem, the synthetic rubber such as acrylic adhesive, polyisobutene that proposed when the formation of bonding coat acrylic copolymer is improved not lose fusible degree cross-linked three D with isocyanate compound or methylol compound cohesive force is tackiness agent.But, because these tackiness agents are solvent systems, therefore in the safety and sanitation of surface protective plate, the aspect existing problems such as the viewpoint of public hazards, economy.
In recent years, in order to improve these problems, require to realize the solvent free of tackiness agent.As its strong approach, the substrate layer of studying the bonding coat that will comprise thermoplastic elastomer and comprising polyolefin-based resins utilizes the coextrusion masking and makes the method (for example with reference to patent documentation 1, patent documentation 2) of surface protective plate.
But, in these surface protective plates, also exist and will be attached at when being peeled off by the surface protective plate on the adherend problem of splintery problem still and weathering resistance deficiency.
The prior art document
Patent documentation
Patent documentation 1 Japanese kokai publication hei 5-194923 communique (page 2)
Patent documentation 2 Japanese kokai publication sho 61-103975 communiques (page 1)
The utility model content
The purpose of this utility model is; a kind of surface protective plate is provided; it is the surface protective plate that is formed with bonding coat in the one side of substrate layer; itself and various bounding force by adherend are good; tear strength is excellent, and weathering resistance is very excellent, even in the situation of outdoor application or at high temperature preservation; the increase of its bounding force also seldom, the separability when being peeled off by adherend is good.
Surface protective plate of the present utility model is the surface protective plate that is formed with bonding coat in the one side of substrate layer,
This substrate layer is that the initial stage Young's modulus that utilizes JIS-K-7127 to determine is 5000kg/cm
2Above polyolefin-based resins layer,
This substrate layer comprises at least the white color system layer and black is 2 layers on layer,
This bonding coat is that the initial stage Young's modulus that utilizes JIS-K-7127 to determine is 1～50kg/cm
2The phenylethylene resin series layer,
The love Er Mendaofu tear strength of this surface protective plate is more than the 50g.
According to the utility model; a kind of surface protective plate can be provided; it is the surface protective plate that is formed with bonding coat in the one side of substrate layer; itself and various bounding force by adherend are good; tear strength is excellent, and weathering resistance is very excellent, even in the situation of outdoor application or at high temperature preservation; the increase of its bounding force also seldom, the separability when being peeled off by adherend is good.
Description of drawings
Fig. 1 is the figure of an embodiment of expression surface protective plate of the present utility model.
Embodiment
Surface protective plate of the present utility model is formed with bonding coat in the one side of substrate layer.
Substrate layer is that the initial stage Young's modulus that utilizes JIS-K-7127 to determine is 5000kg/cm
2Above polyolefin-based resins layer.At the above-mentioned initial stage Young's modulus of substrate layer less than 5000kg/cm
2Situation under, the toughness of surface protective plate just might reduce, for example hand paste operability might variation.Initial stage Young's modulus as substrate layer is preferably 6000kg/cm
2～20000kg/cm
2, 6500kg/cm more preferably
2～15000kg/cm
2
Substrate layer contains polyolefin-based resins.Polyolefin-based resins in the substrate layer contain proportional being preferably more than 60 % by weight, more preferably more than 70 % by weight, more preferably more than 80 % by weight, be particularly preferably more than 85 % by weight, most preferably be more than 90 % by weight.This kind polyolefin-based resins both can only use a kind, also can use more than 2 kinds.
As polyolefin-based resins contained in the substrate layer, can adopt appropriate arbitrarily polyolefin-based resins, yet consider the acrylic polymers such as optimization polypropylene from viewpoints such as film forming stability, burnings; The ethylene-based polymers such as Low Density Polyethylene (LDPE), linear low density polyethylene (LLDPE).
The density of the ethylene-based polymer that can contain in the substrate layer is preferably 0.88～0.93g/cm
3, 0.895～0.920g/cm more preferably
3
Substrate layer preferably comprises 2 layers on white color system layer and black system layer at least.Like this, just can form the very outstanding surface protective plate of weathering resistance.
The white color system layer is the layer that demonstrates the tone of white color system, and for example the whiteness by the JIS-L-1015 regulation is preferably more than 60%, more preferably more than 70%, more preferably more than 80%, is particularly preferably more than 85%.The white color system layer preferably comprises white pigment.As white pigment, can adopt appropriate arbitrarily white pigment.As this kind white pigment, for example can enumerate titanium oxide.Contain at the white color system layer in the situation of white pigment, it contains proportional resinous principle with respect to forming the white color system layer and is preferably 0.1～50 % by weight, more preferably 1～30 % by weight, more preferably 5～20 % by weight.
The resinous principle that forms the white color system layer is preferably polyolefin-based resins, more preferably is selected from least a kind in acrylic polymer and the ethylene-based polymer, more preferably density 0.88～0.93g/cm
3Ethylene-based polymer.As the resinous principle that forms the white color system layer, specifically, can preferably enumerate polypropylene, Low Density Polyethylene (LDPE), linear low density polyethylene (LLDPE).Polyolefin-based resins in the white color system layer contain proportional being preferably more than 60 % by weight, more preferably more than 70 % by weight, more preferably more than 80 % by weight, be particularly preferably more than 85 % by weight, most preferably be more than 90 % by weight.This kind polyolefin-based resins both can only use a kind, also can use more than 2 kinds.
The thickness of white color system layer can adopt appropriate arbitrarily thickness according to purpose.This kind thickness is preferably 1～50 μ m, 3～40 μ m more preferably, and more preferably 5～30 μ m are particularly preferably 10～30 μ m.
Black system layer is the layer that demonstrates the tone of black system.Black system layer preferably comprises black pigment.As black pigment, can adopt appropriate arbitrarily black pigment.As this kind black pigment, for example can enumerate carbon black.Layer contains in the situation of black pigment in black system, and it contains proportional resinous principle with respect to forming black system layer and is preferably 0.01～10 % by weight, more preferably 0.1～5 % by weight, more preferably 0.5～3 % by weight.
The resinous principle that forms black system layer is preferably polyolefin-based resins, more preferably is selected from least a kind in acrylic polymer and the ethylene-based polymer, more preferably density 0.88～0.93g/cm
3Ethylene-based polymer.As the resinous principle that forms black system layer, specifically, can preferably enumerate polypropylene, Low Density Polyethylene (LDPE), linear low density polyethylene (LLDPE).Polyolefin-based resins in the black system layer contain proportional being preferably more than 60 % by weight, more preferably more than 70 % by weight, more preferably more than 80 % by weight, be particularly preferably more than 85 % by weight, most preferably be more than 90 % by weight.This kind polyolefin-based resins both can only use a kind, also can use more than 2 kinds.
The thickness of black system layer can adopt appropriate arbitrarily thickness according to purpose.This kind thickness is preferably 1～100 μ m, 5～70 μ m more preferably, and more preferably 10～60 μ m are particularly preferably 20～50 μ m.
In substrate layer, for preventing the purposes such as deteriorated, also can contain appropriate arbitrarily additive.As this kind additive, for example can enumerate oxidation inhibitor; UV light absorber; Hindered amine is the photostabilizers such as photostabilizer; The anti-static electricity interference agent; The weighting agents such as calcium oxide, magnesium oxide, silicon-dioxide, zinc oxide, titanium oxide; Pigment; Preventing materials accumulation agent (order ヤ ニ prevents drug); Lubricant; Antiblocking agent; Whipping agent; Polymine etc.
The thickness of substrate layer can adopt appropriate arbitrarily thickness according to purpose.As this kind thickness, be preferably 20～300 μ m, more preferably 30～250 μ m, more preferably 40～200 μ m.
In the rear side of substrate layer, for giving anti-skid or the easy purpose of cutting property (handycut), also can implement concavo-convex processing.In addition, also can form the various functional layers such as printed layers in the rear side of substrate layer.
Bonding coat is that the initial stage Young's modulus that utilizes JIS-K-7127 to determine is 1～50kg/cm
2The phenylethylene resin series layer.At the above-mentioned initial stage Young's modulus of bonding coat less than 1kg/cm
2Situation under, might can't embody enough tear strengths.Above-mentioned initial stage Young's modulus at bonding coat surpasses 50kg/cm
2Situation under, it is really up to the mark that bonding coat might become.Initial stage Young's modulus as bonding coat is preferably 3kg/cm
2～40kg/cm
2, 4kg/cm more preferably
2～30kg/cm
2And in the utility model, the initial stage Young's modulus of bonding coat is to coat on the barrier film formation material (binder composition) that forms bonding coat and drying, and making is only measured for the test film of binder layer.
Bonding coat contains phenylethylene resin series.Phenylethylene resin series in the bonding coat contain proportional being preferably more than 50 % by weight, more preferably more than 60 % by weight, more preferably more than 70 % by weight, be particularly preferably more than 80 % by weight, most preferably be more than 90 % by weight.This kind phenylethylene resin series both can only use a kind, also can use more than 2 kinds.
As phenylethylene resin series contained in the bonding coat, can adopt appropriate arbitrarily phenylethylene resin series.In the utility model, as phenylethylene resin series, be preferably the hydrogenation thing of the mixture of A/B/A or A/B/A and A '/B '.Here, A and A ' are the polymeric blocks that is made of styrenic monomers, and B and B ' are the polymeric blocks that is made of conjugated diolefine.
The molecular weight of the polymeric blocks that is made of styrenic monomers is preferably 1000～1000000, and more preferably 2000～100000.The second-order transition temperature of the polymeric blocks that is made of styrenic monomers is preferably more than 20 ℃.
The molecular weight of the polymeric blocks that is made of conjugated diolefine is preferably 1000～1000000, and more preferably 10000～300000.The second-order transition temperature of the polymeric blocks that is made of conjugated diolefine is preferably below-20 ℃.
As styrenic monomers, can adopt the arbitrarily appropriate monomer with vinylbenzene structure.As this kind styrenic monomers, such as enumerating vinylstyrene, vinyl-dimethyl benzene, ethyl styrene, isopropyl benzene ethene, alpha-methyl styrene etc.Styrenic monomers can only be a kind both, also can be more than 2 kinds.
As conjugated diolefine, can adopt the arbitrarily appropriate monomer with conjugated diolefine structure.As this kind conjugated diolefine, such as enumerating divinyl, isoprene etc.Conjugated diolefine can only be a kind both, also can be more than 2 kinds.
The hydrogenation of phenylethylene resin series is preferably the optionally state of hydrogenation of the polymeric blocks that will be made of conjugated diolefine.The degree of the hydrogenation of the polymeric blocks that is made of conjugated diolefine of phenylethylene resin series generally is preferably more than 60 % by weight with respect to the conjugated diolefine composition, more preferably more than 80 % by weight.Generally in the situation less than 60 % by weight, enough tear strengths might can't be embodied with respect to the conjugated diolefine composition in the degree of the hydrogenation of the polymeric blocks that is consisted of by conjugated diolefine of phenylethylene resin series.
In the phenylethylene resin series of the present utility model, the ratio of A and B is preferably A: B=5: 95～50: the ratio of 50, A ' and B ' is preferably A ': B '=5: 95～50: 50.
In bonding coat, for purposes such as adjusting binding propertys, also can in the scope of not damaging the purpose of this utility model, mix other phenylethylene resin series.
When forming bonding coat, for purposes such as control adhesion characteristics, can be as required, be the additives such as photostabilizer, UV light absorber, polymine, fatty acid amide, phosphoric acid ester, weighting agent or pigment (such as calcium oxide, magnesium oxide, silicon-dioxide, zinc oxide, titanium oxide etc.) such as suitably adding tenderizer, ethylene series resin, silicone-based polymkeric substance, aqueous acrylic copolymer, tackifier, protective agent, hindered amine.
Also can be as required to bonding coat surface embodiment such as Corona discharge Treatment, uviolizing processing, flame treating, Cement Composite Treated by Plasma, sputter etching processing etc. take to fusible control or attach operability etc. as the surface treatment of purpose.
The cooperation of tackifier is effective for improving bounding force.But, the generation of the glue trace problem that causes for fear of the reduction by cohesive force, with the use level that is suitably determined accordingly tackifier by adherend of application surface screening glass.For the use level of tackifier, as a rule, with respect to phenylethylene resin series, be preferably below 60 % by weight, more preferably below 50 % by weight, more preferably below 40 % by weight, be particularly preferably below 30 % by weight.
As tackifier, be that resin, terpenic series resin, terpenes phenolic aldehyde are that the rosin series resins such as resin, polymerized rosin, (alkyl) phenolic aldehyde are the material that resin, diformazan benzene series resin, their hydride etc. generally use in tackiness agent such as petroleum line resin, coumarone-indenes such as can using aliphatics based copolymer, aromatic series based copolymer, aliphatics aromatic series based copolymer system or ester ring type based copolymer with being not particularly limited.Tackifier both can only use a kind, also can use more than 2 kinds.In the middle of these tackifier, consider the tackifier that preferred hydrogenation is from aspects such as separability or weathering resistances.And, the material that tackifier also can use conduct and the mixture of olefin resin to sell in market.
The cooperation of tenderizer is effective for improving bounding force.As tenderizer, such as enumerating low-molecular-weight diene polymer, polyisobutene, hydrogenated polyisoprene, hydrogenated butadiene polymer, their derivative etc.As this kind derivative, for example can example be illustrated in the material that an end or two ends have OH base or COOH base, specifically, can enumerate hydrogenated butadiene polymer glycol, hydrogenated butadiene polymer single methanol, hydrogenated polyisoprene glycol, hydrogenated polyisoprene single methanol etc.Particularly, from suppressing considered the hydride of the diene polymers such as preferred hydrogenated butadiene polymer or hydrogenated polyisoprene or ethylene series tenderizer etc. by the purpose of the fusible raising of adherend.As this kind tenderizer, specifically, can buy the trade(brand)name " Kuraprene LIR-200 " of (strain) Kuraray system etc.These tenderizers both can only use a kind, also can use more than 2 kinds.
The molecular weight of tenderizer can suitably be set as appropriate arbitrarily amount, if yet molecular weight diminishes, then might cause from bonding coat to by the substance transfer of adherend or heavy peeling off etc., on the other hand, if the molecule quantitative change is large, then have the trend of the raising effect that lacks bounding force, so the number-average molecular weight of tenderizer is preferably 5000～100,000, more preferably 10,000～50,000.
When using tenderizer, its addition can suitably be set as appropriate arbitrarily amount, if yet addition is many, the trend that glue trace when then having high temperature or outdoor exposure increases, therefore with respect to phenylethylene resin series, be preferably below 60 % by weight, more preferably below 50 % by weight, more preferably below 40 % by weight, be particularly preferably below 30 % by weight.
The thickness of bonding coat is as long as suitably be set as appropriate arbitrarily thickness according to desired bounding force etc.The thickness of bonding coat is preferably 1～50 μ m, more preferably 2～40 μ m, more preferably 5～20 μ m.
Phenylethylene resin series before the hydrogenation can utilize appropriate arbitrarily method to make.As this kind manufacture method, such as in unreactive hydrocarbons solvent (such as hexanaphthene etc.), use s-butyl lithium etc. is carried out the living polymerization of styrenic monomers, then add conjugated diolefine, two block structures of the polymeric blocks of the polymeric blocks that formation is made of styrenic monomers/consisted of by conjugated diolefine, if necessary, then form three block structures to wherein adding styrenic monomers again.In addition, also can by using the above coupling agent of 2 officials energy, form three block structures, branched block structure etc.
Method as to the hydrogenation of phenylethylene resin series can adopt appropriate arbitrarily method.As this kind method, such as enumerating following method etc., namely, dissolving phenylethylene resin series in unreactive hydrocarbons solvent (such as hexanaphthene etc.), add to use the catalyst reduction such as aluminum alkyls cobalt or nickel etc., under the temperature about 25～50 ℃, use 5～40kg/cm
3About hydrogen, under pressure, react about 10～60 minutes.
The love Er Mendaofu tear strength of surface protective plate of the present utility model is more than the 50g.
Like that the Er Mendaofu tear strength is the value of measuring according to JIS-P-8116.Be more than the 50g by the love Er Mendaofu tear strength that makes surface protective plate, just can form the surface protective plate of tear strength excellence.
Surface protective plate of the present utility model can by using the formation material that forms above-mentioned substrate layer and the formation material that forms above-mentioned bonding coat, utilize the coetrusion film forming to obtain substrate layer and bonding coat.Surface protective plate of the present utility model is because substrate layer comprises the white color system layer at least and black is 2 layers on layer; therefore the formation material that forms substrate layer is more than 2 kinds; so; surface protective plate of the present utility model can be by the formation material more than 2 kinds that use to form substrate layer and the formation material that forms bonding coat, with substrate layer and bonding coat multilayer utilize the coetrusion film forming to obtain.
Formation as surface protective plate of the present utility model is not particularly limited, and can adopt any one formation of " white color system layer/black system layer/bonding coat ", " black system layer/white color system layer/bonding coat ".In addition, as substrate layer, also can be made as the layer more than 3 layers that has formed black system layer and white color system layer layer in addition and consist of.Specifically, also can be made as formations such as " transparent resin layers/white color system layer/black system layer/bonding coat ".In addition, the thickness of white color system layer and black system layer both can be identical, also can be different thickness (the white color system layer than the black system thin thickness of layer consist of, the white color system layer is that the thickness of bed thickness consists of than black).
As coetrusion, can be according to generally the blow moulding of usefulness, T die head method etc. are carried out in thin film fabrication etc.Can implement above-mentioned surface treatment to substrate layer and bonding coat as required.
For bonding coat, also can be as required, before being used for practical application during, attach barrier film etc. temporarily and protected.And, the face of not setting up bonding coat for substrate layer, be easy to the purposes such as coiling body of uncoiling for formation, such as also carrying out the demoulding and process or arrange the coating layer that comprises the suitable stripper such as silicone-based, chain alkyl system, fluorine system by in substrate layer, adding fatty acid amide or polymine etc.
Embodiment
Below, utilize embodiment that the utility model is specifically described, yet the utility model is not subjected to any restriction of these embodiment.
[embodiment 1]
Will be to polypropylene (bright dipping petroleum chemistry company system, F-744NP) add white pigment (the company's system of refining large day of 20 % by weight in, HCM2035W) and the white layer of base material form material, with to polypropylene (bright dipping petroleum chemistry company system, F-744NP) add carbon black (Mitsubishi Chemical's system of 2 % by weight in, carbon black " #45 ") and the black layer of base material form a material use T die head coextrusion (extruder temperature: 200 ℃ that is shaped, die head temperature: 200 ℃) film forming obtains the white black bilayer film A shown in the table 2 (white layer/black layer=20 μ m/20 μ m).
Black layer side to film A implemented corona treatment; coating adhesive composition on this treated side; produce surface protective plate; this binder composition is that to add the rosin series hydrogenating glycerol ester (85 ℃ of softening temperatures) of 36 % by weight, the calcium carbonate of 3 % by weight, the phenol of 0.6 % by weight in the polymkeric substance 1 shown in the table 1 be protective agent, is dissolved in the toluene and gets (solids component 60 % by weight).
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[embodiment 2]
Making is with polypropylene (bright dipping petroleum chemistry company system, F-744NP) 60 weight parts, high density polyethylene(HDPE) (Tosoh company system, NIPOLON HARD 5700) 40 weight parts mix and base material shaped polymer material, white pigment (the company's system of refining large day of 20 % by weight will be added in this base material shaped polymer material, HCM2035W) and the white layer of base material form material, with to polypropylene (bright dipping petroleum chemistry company system, F-744NP) add carbon black (Mitsubishi Chemical's system of 2 % by weight in, carbon black " #45 ") and the black layer of base material form a material use T die head coextrusion (extruder temperature: 200 ℃ that is shaped, die head temperature: 200 ℃) film forming obtains the white black bilayer film B shown in the table 2 (white layer/black layer=20 μ m/20 μ m).
Black layer side to film B implemented corona treatment; coating adhesive composition on this treated side; produce surface protective plate; this binder composition is that to add the aliphatics petroleum resin (100 ℃ of softening temperatures) of 20 % by weight, the aliphatics petroleum resin (40 ℃ of softening temperatures) of 30 % by weight, the phenol of 0.5 % by weight in the polymkeric substance 2 shown in the table 1 be protective agent, is dissolved in the toluene and gets (solids component 60 % by weight).
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 10 μ m.
[embodiment 3]
Making is with high density polyethylene(HDPE) (Tosoh company system; NIPOLON HARD 5700) 80 weight parts; and Low Density Polyethylene (Tosoh company system; Petrocene 225) 20 weight parts mix and base material shaped polymer material; white pigment (the company's system of refining large day of 20 % by weight will be added in this base material shaped polymer material; HCM2035W) and the white layer of base material form material; to polypropylene (bright dipping petroleum chemistry company system; F-744NP) add carbon black (Mitsubishi Chemical's system of 2 % by weight in; carbon black " #45 ") and the black layer of base material form a material; bonding coat that get forms material use T die head coextrusion shaping (extruder temperature: 200 ℃ with the binder composition that will obtain among the embodiment 2 (removing toluene) usefulness kneader is mixing with 150 ℃ * 20 minutes; die head temperature: 200 ℃) film forming obtains surface protective plate (white layer/black layer/bonding coat=22 μ m/22 μ m/15 μ m).
[embodiment 4]
Making is with high density polyethylene(HDPE) (Tosoh company system, NIPOLON HARD 5700) 80 weight parts, and Low Density Polyethylene (Tosoh company system, Petrocene 225) 20 weight parts mix and base material shaped polymer material, white pigment (the company's system of refining large day of 20 % by weight will be added in this base material shaped polymer material, HCM2035W) and the white layer of base material form material, with to polypropylene (bright dipping petroleum chemistry company system, F-744NP) add carbon black (Mitsubishi Chemical's system of 2 % by weight in, carbon black " #45 ") and the black layer of base material form a material use T die head coextrusion (extruder temperature: 200 ℃ that is shaped, die head temperature: 200 ℃) film forming obtains the white black bilayer film C shown in the table 2 (white layer/black layer=20 μ m/20 μ m).
Black layer side to film C implemented corona treatment; coating adhesive composition on this treated side; produce surface protective plate; this binder composition is the aliphatics petroleum resin (100 ℃ of softening temperatures) that add 33 % by weight in the polymkeric substance 3 shown in the table 1, is dissolved in the toluene and gets (solids component 60 % by weight).
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[embodiment 5]
As binder composition; used the following binder composition that obtains; namely; suitable to the polymkeric substance 2 that forms with shown in the table 1, and the ratio of three blocks of A/B/A and the diblock of A/B is in 80: 20 the polymkeric substance, to add the aliphatic petroleum resin (100 ℃ of softening temperatures) of 42 % by weight; be dissolved in the toluene and get (solids component 60 % by weight); in addition, carry out with the method identical with embodiment 1, produce surface protective plate.
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[comparative example 1]
Use is carried out radical polymerization and is obtained polymkeric substance by the monomer component that butyl acrylate 100 weight parts, methyl methacrylate 10 weight parts and vinylformic acid 2 weight parts consist of.The weight-average molecular weight of this polymkeric substance (Mw) is 500,000, Mw/Mn=4.This polymer dissolution in toluene and form binder composition (solids component 30 % by weight), except use this tackiness agent as binder composition, is carried out with the method identical with embodiment 1, produce surface protective plate.
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[comparative example 2]
Making is with high density polyethylene(HDPE) (Tosoh company system, NIPOLON HARD 5700) 40 weight parts, and vinyl-vinyl acetate copolymer (EVA) (Tosoh company system, Ultrathene 515) 60 weight parts mix and base material shaped polymer material, white pigment (the company's system of refining large day of 20 % by weight will be added in this base material shaped polymer material, HCM2035W) and the white layer of base material form material, with to polypropylene (bright dipping petroleum chemistry company system, F-744NP) add carbon black (Mitsubishi Chemical's system of 2 % by weight in, carbon black " #45 ") and the black layer of base material form a material use T die head coextrusion (extruder temperature: 200 ℃ that is shaped, die head temperature: 200 ℃) film forming obtains the white black bilayer film D shown in the table 2 (white layer/black layer=20 μ m/20 μ m).
Black layer side to film D implemented corona treatment, and the binder composition that obtains in this treated side coating embodiment 1 is produced surface protective plate.
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[comparative example 3]
Except when the making of the film A of embodiment 1; do not carry out white pigment in the base material and the interpolation of carbon black; only produce beyond 1 layer the substrate layer that is consisted of by polypropylene (bright dipping petroleum chemistry company system, F-744NP); carry out with the method identical with embodiment 1, produce surface protective plate.
The thickness of the substrate layer of the surface protective plate of gained is 40 μ m, and the thickness of bonding coat is 15 μ m.
[evaluation test]
(extrusion condition)
Forcing machine
Barrel diameter: 50mm φ
·L/D：20
Die head
Use the T die head
Die lip: 1mm
Molding condition
Draw rate: 20mm/ minute
Extrusion temperature: 220 ℃
(the initial stage Young's modulus of substrate layer bonding coat)
According to JIS-K-7127.The results are shown in Table 3.
(liking the Er Mendaofu tear strength)
According to JIS-P-8116.The results are shown in Table 3.
(hand paste operability)
The easness of the generation of the fold during according to coating surface screening glass on the stainless steel plate of 10cm * 10cm or skew easness are judged.The results are shown in Table 3.
(strip operation)
Resistance to tearing when peeling off rapidly from the angle part according to the surface protective plate of the product of will fitting is judged.The results are shown in Table 3.
(mensuration of weathering resistance)
The surface protective plate that obtains in embodiment and the comparative example is cut into the rectangle of wide 20mm and produces the evaluation sample.The roller by making 2kg 1 time and after being crimped on this sample on the SUS430BA plate back and forth, dropped in the sunlight carbon arc Ageing machine (Suga trier Co., Ltd. product) 1000 hours, then, peel off length to 100mm with 0.3m/ minute the end of draw speed along 180 ° of directions from sample.
According to the above-mentioned result of following benchmark evaluation.The results are shown in Table 3.
Zero: sample is not broken, can peel off very well.
*: because base material deteriorated makes sample broken on the way, perhaps adhesive residue is in by adherend and with its pollution.
[table 1]
[table 2]
[table 3]
Can distinguish that according to table 3 surface protective plate of the present utility model and various bounding force by adherend are good, tear strength is excellent; weathering resistance is very excellent; even in outdoor application or when at high temperature preserving, the increase of its bounding force also seldom, the separability when being peeled off by adherend is good.
Utilizability on the industry
Surface protective plate of the present utility model can be used for following purposes etc.; namely; such as to metal sheet, application the member such as metal sheet, aluminum alloy frame, resin board, decorative steel plate, pvdc layer laminated steel, sheet glass carry, when processing or maintenance etc., be attached to these component surface and protected.
Claims (6)
1. surface protective plate, its one side at substrate layer has bonding coat,
This substrate layer is that the initial stage Young's modulus that utilizes JIS-K-7127 to measure is 5000kg/cm
2Above polyolefin-based resins layer,
This substrate layer comprises at least the white color system layer and black is these 2 layers on layer,
This bonding coat is that the initial stage Young's modulus that utilizes JIS-K-7127 to measure is 1～50kg/cm
2The phenylethylene resin series layer.
2. surface protective plate according to claim 1, wherein,
The thickness of described white color system layer is 1～50 μ m.
3. surface protective plate according to claim 1, wherein,
Described black is that the thickness of layer is 1～100 μ m.
4. surface protective plate according to claim 1, wherein,
The thickness of described substrate layer is 20～300 μ m.
5. surface protective plate according to claim 1, wherein,
The thickness of described bonding coat is 1～50 μ m.
6. surface protective plate according to claim 1, wherein,
Like that the Er Mendaofu tear strength is more than the 50g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051497 CN202671480U (en) | 2012-02-15 | 2012-02-15 | Surface protective sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051497 CN202671480U (en) | 2012-02-15 | 2012-02-15 | Surface protective sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202671480U true CN202671480U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220051497 Expired - Fee Related CN202671480U (en) | 2012-02-15 | 2012-02-15 | Surface protective sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202671480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254815A (en) * | 2012-02-15 | 2013-08-21 | 日东电工株式会社 | Surface protection sheet |
-
2012
- 2012-02-15 CN CN 201220051497 patent/CN202671480U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103254815A (en) * | 2012-02-15 | 2013-08-21 | 日东电工株式会社 | Surface protection sheet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20190215 |