CN103254826A - Surface protection sheet - Google Patents
Surface protection sheet Download PDFInfo
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- CN103254826A CN103254826A CN2012103693402A CN201210369340A CN103254826A CN 103254826 A CN103254826 A CN 103254826A CN 2012103693402 A CN2012103693402 A CN 2012103693402A CN 201210369340 A CN201210369340 A CN 201210369340A CN 103254826 A CN103254826 A CN 103254826A
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Abstract
The invention provides a surface protection sheet, which comprises a substrate layer and a bonding layer, wherein, in the pasting paste of the body to be adhered, the bonding force is appropriate and strong enough, on the other hand, the bonding force for peeling the body to be adhered after pasting is appropriate, accordingly, the product can be peeled from the body to be adhered by easily applying a slight force, furthermore, rise of the bonding force can be inhibited at high temperature in the long-term preservation environment case with load, further, the product has a fully weatherability. The surface protection sheet of the present invention comprises the substrate layer and the bonding layer, wherein, the substrate layer and the bonding layer are shaped by coextrusion for forming one body; when the stretching speed is 0.3 m/min, the initial bonding force P relative to SUS 430 BA board is 2.0 N/20 mm for 180-degree peeling, and when the stretching speeds are 0.3 m/min, 1 m/min, 10 m/min and 30 m/min, the maximum initial bonding force Q (N/20 mm) is below 150% of P relative to SUS 430 BA board for 180-degree peeling.
Description
Technical field
The present invention relates to a kind of surface protective plate.Specifically, the present invention relates to a kind of surface protective plate that comprises substrate layer and bonding coat.Surface protective plate of the present invention for example when opticses such as parts, polarizing coating, liquid crystal panel, electronic units such as carrying, processing or maintenance metal sheet, coated plate, aluminum alloy frame, resin board, decorative steel plate, vinylchlorid laminate steel, sheet glass etc. etc., can be used for sticking on purposes of protecting on these the surface etc.
Background technology
Surface protective plate is provided with bonding coat in a side of substrate layer usually.Comprise the method for the surface protective plate of such substrate layer and bonding coat as manufacturing, propose to have a kind of method (for example, with reference to patent documentation 1) by substrate layer and bonding coat coextrusion are formed as one.
But existing surface protective plate is not to enough high by the bonding force under the sticking state of adherend.Therefore, when pasting being processed by adherend of existing surface protective plate etc., the problem that has the part of this surface protective plate to peel off.
In addition, existing surface protective plate has following problem: the bonding force when peeling off after being pasted by adherend is too high, is difficult to slight power easily from being peeled off by adherend.
And then existing surface protective plate has following problem: under the situation of the carrying capacity of environment that is exposed to the prolonged preservation under the higher temperatures, bonding force rises greatly, the separability variation when being peeled off by adherend.
In addition, existing surface protective plate does not fully possess weathering resistance, use out of doors or the situation of at high temperature preserving under, have bonding force through the time increase the problem of the separability variation when being peeled off by adherend greatly.
The prior art document
Patent documentation 1: Japanese kokai publication sho 61-103975 communique
Summary of the invention
The problem that invention will solve
Problem of the present invention is to provide a kind of surface protective plate; it comprises substrate layer and bonding coat, wherein, and to by the enough height of the bonding force under adherend sticking state appropriateness; on the other hand; bonding force when peeling off after being pasted by adherend is the size of appropriateness, therefore, and just can be easily from being peeled off by adherend with slight power; and then; can suppress to be exposed to the rising of bonding force of situation of the carrying capacity of environment of the prolonged preservation under the higher temperatures, in addition, possess sufficient weathering resistance.
Be used for solving the means of problem
Surface protective plate of the present invention comprises substrate layer and bonding coat,
This substrate layer and this bonding coat form as one by coextrusion and form,
The initial bonding force P of described surface protective plate 180 ° of relative SUS430BA plates when peeling off under draw speed 0.3m/min is more than the 2.0N/20mm,
Draw speed is respectively in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition of 0.3m/min, 1m/min, 10m/min, 30m/min, and maximum maximum initial bonding force Q (N/20mm) is below 150% of P.
In preferred embodiment, described substrate layer comprises polyolefin-based resins as main component.
In preferred embodiment, described substrate layer comprises the white color system layer.
In preferred embodiment, described white color system layer comprises polyethylene-based resin as main component.
In preferred embodiment, described polyethylene-based resin comprises Low Density Polyethylene.
In preferred embodiment, described substrate layer comprises black system layer.
In preferred embodiment, described black is that layer comprises polyethylene-based resin as main component.
In preferred embodiment, described polyethylene-based resin comprises Low Density Polyethylene and straight chain shape Low Density Polyethylene.
In preferred embodiment, described substrate layer comprises photostabilizer.
In preferred embodiment, described photostabilizer is that hindered amine is photostabilizer.
In preferred embodiment, the proportional gross weight with respect to described surface protective plate that contains of described photostabilizer is more than the 0.10 weight %.
In preferred embodiment, described bonding coat comprises styrene series thermoplastic elastomer.
In preferred embodiment, surface protective plate of the present invention stick on the SUS430BA plate and under the condition of 40 ℃ of temperature, humidity 92%RH, preserved for two weeks after, 180 ° of preservation bonding forces when peeling off are below the 7.0N/20mm under the draw speed 10m/min.
In preferred embodiment, surface protective plate of the present invention stick on the SUS430BA plate and under the condition of 50 ℃ of temperature, humidity 50%RH, preserved for two weeks after, 180 ° of preservation bonding forces when peeling off are below the 6.0N/20mm under the draw speed 10m/min.
In preferred embodiment, surface protective plate of the present invention stick on the SUS430BA plate and carry out 750 hours sunlight weather resistance test after, the following 180 ° of bonding forces when peeling off of draw speed 10m/min are below the 8.0N/20mm.
The invention effect
According to the present invention, a kind of surface protective plate can be provided, it comprises substrate layer and bonding coat; wherein; to enough high by the bonding force under adherend sticking state appropriateness, on the other hand, the bonding force when peeling off after being pasted by adherend is appropriate size; therefore; with slight power just can be easily from being peeled off by adherend, and then, can suppress to be exposed to the rising of bonding force of situation of the carrying capacity of environment of the prolonged preservation under the higher temperatures; in addition, possesses sufficient weathering resistance.
Description of drawings
Fig. 1 is the sectional view that schematically shows a configuration example of surface protective plate of the present invention.
Nomenclature
100 surface protective plates
10 bonding coats
20 substrate layers
21 white color system layers
22 black system layer
Embodiment
Surface protective plate of the present invention is the surface protective plate that comprises substrate layer and bonding coat.Surface protective plate of the present invention also can comprise the layer of suitable arbitrarily other in the scope of not damaging effect of the present invention.
The thickness of substrate layer is preferably 20 μ m～300 μ m, 30 μ m～250 μ m more preferably, and more preferably 40 μ m～200 μ m are preferably 45 μ m～150 μ m especially, most preferably are 50 μ m～100 μ m.As long as the thickness of substrate layer is contained in the above-mentioned scope; when peeling off after then on sticking on surface protective plate of the present invention by adherend; substrate layer is cracky or fracture not; in addition; the hardness that can suppress substrate layer becomes big; therefore, surface protective plate of the present invention is sticked on by after on the adherend, difficult generation is floated etc.
The thickness of bonding coat is preferably 1 μ m～50 μ m, 2 μ m～40 μ m more preferably, and more preferably 3 μ m～30 μ m are preferably 4 μ m～20 μ m especially, most preferably are 5 μ m～10 μ m.Be contained in the above-mentioned scope by the thickness with bonding coat, when being shaped manufacturing surface protective plate of the present invention by coextrusion, being easy to key-course and constituting, in addition, can obtain having the surface protective plate of sufficient mechanical.
The thickness of the integral body of surface protective plate of the present invention is preferably 30 μ m～150 μ m, 35 μ m～140 μ m more preferably, and more preferably 40 μ m～130 μ m are preferably 45 μ m～120 μ m especially, most preferably are 50 μ m～110 μ m.Be contained in the above-mentioned scope by the thickness with the integral body of surface protective plate of the present invention, can obtain the surface protective plate that the property handled is excellent and have sufficient mechanical.
Surface protective plate of the present invention forms as one by coextrusion by substrate layer and bonding coat and forms.Be shaped as coextrusion, can adopt the suitable coextrusion arbitrarily of the general manufacturing that is used for film, sheet material etc. to be shaped.Be shaped as coextrusion, for example can adopt blow moulding, coextrusion T-modulus method etc.These coextrusion are shaped and consider preferred from the aspect of cost aspect or productivity.
Surface protective plate of the present invention preferably under draw speed 0.3m/min the initial bonding force P of 180 ° of relative SUS430BA plates when peeling off be more than the 2.0N/20mm; be preferably 2.0N/20mm～5N/20mm; 2.1N/20mm～4N/20mm more preferably; 2.2N/20mm～3.8N/20mm more preferably; be preferably 2.2N/20mm～3.5N/20mm especially, most preferably be 2.2N/20mm～3.1N/20mm.The initial bonding force P of 180 ° of relative SUS430BA plates when peeling off becomes by the index of the bonding force under the adherend sticking state under draw speed 0.3m/min.By will be under draw speed 0.3m/min the initial bonding force P of 180 ° of relative SUS430BA plates when peeling off be contained in the above-mentioned scope; surface protective plate of the present invention to by the enough height of the bonding force under adherend sticking state appropriateness; when being pasted with being processed by adherend of this surface protective plate etc., this surface protective plate is incrust.In addition, about the measuring method of the initial bonding force P of 180 ° of relative SUS430BA plates when peeling off under draw speed 0.3m/min, narrate in the back.
The draw speed of surface protective plate of the present invention is respectively that maximum maximum initial bonding force Q (N/20mm) is below 150% of P in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition of 0.3m/min, 1m/min, 10m/min, 30m/min; more preferably 80%～150%; more preferably 90%～140%; be preferably 95%～135% especially, most preferably be 100%～130%.P is respectively maximum initial bonding force Q (N/20mm) maximum in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition of 0.3m/min, 1m/min, 10m/min, 30m/min with respect to draw speed multiplying power is the index of the bonding force when peeling off after being pasted by adherend.Be contained in the above-mentioned scope by maximum initial bonding force Q (N/20mm) maximum in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition that draw speed is respectively 0.3m/min, 1m/min, 10m/min, 30m/min, surface protective plate of the present invention can be with slight power easily from being peeled off by adherend.In addition, be respectively the measuring method of maximum initial bonding force Q (N/20mm) maximum in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition of 0.3m/min, 1m/min, 10m/min, 30m/min about draw speed, narrate in the back.
Surface protective plate of the present invention sticks on the SUS430BA plate and 40 ℃ of temperature; after preserving for two weeks under the condition of humidity 92%RH; the following 180 ° of preservation bonding forces when peeling off of draw speed 10m/min are preferably below the 7.0N/20mm; 2.0N/20mm～6.0N/20mm more preferably; 2.0N/20mm～5.5N/20mm more preferably; further be preferably 2.0N/20mm～5.0N/20mm; 2.0N/20mm～4.0N/20mm more preferably again; 2.2N/20mm～3.8N/20mm more preferably; be preferably 2.4N/20mm～3.6N/20mm especially, most preferably be 2.6N/20mm～3.4N/20mm.Stick on the SUS430BA plate and under the condition of 40 ℃ of temperature, humidity 92%RH, preserve under two week back, the draw speed 10m/min index of bonding force that 180 ° of preservation bonding forces when peeling off become the situation of the carrying capacity of environment that is exposed to the prolonged preservation under the higher temperatures.Be contained in the above-mentioned scope by sticking on the SUS430BA plate and preserve under two week back, the draw speed 10m/min 180 ° of preservation bonding forces when peeling off under the condition of 40 ℃ of temperature, humidity 92%RH, the separability of surface protective plate of the present invention when being peeled off by adherend becomes good.In addition, about sticking on the SUS430BA plate and under the condition of 40 ℃ of temperature, humidity 92%RH, preserving under two week back, the draw speed 10m/min measuring method of 180 ° of preservation bonding forces when peeling off, narrate in the back.
Surface protective plate of the present invention sticks on the SUS430BA plate and 50 ℃ of temperature; after preserving for two weeks under the condition of humidity 50%RH; the following 180 ° of preservation bonding forces when peeling off of draw speed 10m/min are preferably below the 6.0N/20mm; 2.0N/20mm～5.5N/20mm more preferably; 2.0N/20mm～5.0N/20mm more preferably; further be preferably 2.0N/20mm～4.5N/20mm; 2.0N/20mm～4.0N/20mm more preferably again; 2.2N/20mm～3.8N/20mm more preferably; be preferably 2.4N/20mm～3.6N/20mm especially, most preferably be 2.6N/20mm～3.4N/20mm.Stick on the SUS430BA plate and under the condition of 50 ℃ of temperature, humidity 50%RH, preserve under two week back, the draw speed 10m/min index of bonding force that 180 ° of preservation bonding forces when peeling off become the situation of the carrying capacity of environment that is exposed to the prolonged preservation under the higher temperatures.Be contained in the above-mentioned scope by sticking on the SUS430BA plate and preserve under two week back, the draw speed 10m/min 180 ° of preservation bonding forces when peeling off under the condition of 50 ℃ of temperature, humidity 50%RH, the separability of surface protective plate of the present invention when being peeled off by adherend becomes good.In addition, about sticking on the SUS430BA plate and under the condition of 50 ℃ of temperature, humidity 50%RH, preserving under two week back, the draw speed 10m/min measuring method of 180 ° of preservation bonding forces when peeling off, narrate in the back.
After surface protective plate of the present invention sticks on the SUS430BA plate and carries out 750 hours sunlight weather resistance test; the following 180 ° of bonding forces when peeling off of draw speed 10m/min are preferably below the 8.0N/20mm; 2.0N/20mm～7.5N/20mm more preferably; 2.0N/20mm～7.0N/20mm more preferably; further be preferably 2.0N/20mm～6.5N/20mm; 2.0N/20mm～6.0N/20mm more preferably again; and then be preferably 2.0N/20mm～5.5N/20mm; 2.0N/20mm～5.0N/20mm more preferably; 2.1N/20mm～4.8N/20mm more preferably again; be preferably 2.2N/20mm～4.5N/20mm especially, most preferably be 2.2N/20mm～4.0N/20mm.After sticking on the SUS430BA plate and carrying out 750 hours sunlight weather resistance test, the following 180 ° of bonding forces when peeling off of draw speed 10m/min become the index of weathering resistance.By after will sticking on the SUS430BA plate and carrying out 750 hours sunlight weather resistance test, the following 180 ° of bonding forces when peeling off of draw speed 10m/min are contained in the above-mentioned scope; having excellent weather resistance of surface protective plate of the present invention; even under the situation of preserving under the use out of doors or the high temperature; also can suppress bonding force through the time increase greatly, the separability when being peeled off by adherend becomes good.In addition, about after sticking on the SUS430BA plate and carrying out 750 hours sunlight weather resistance test, the measuring method of the following 180 ° of bonding forces when peeling off of draw speed 10m/min, narrate in the back.
Substrate layer preferably comprises polyolefin-based resins as main component.Comprise polyolefin-based resins as main component by substrate layer, can have thermotolerance, solvent resistance, pliability, can easily be wound into the roller shape.Polyolefin-based resins contained in the substrate layer can only be a kind of, also can be for two or more.Substrate layer can be individual layer, also can be multilayer.
At this, in the present invention, so-called " main component " is preferably more than the 50 weight %, more preferably more than the 60 weight %, more preferably more than the 70 weight %, is preferably especially more than the 80 weight %, most preferably is more than the 90 weight %.
As polyolefin-based resins, for example can enumerate: polyethylene-based resin, the propylene resin that is formed by propylene or propylene composition and ethene composition, ethylene vinyl acetate copolymer etc.
As polyolefin-based resins, particularly, for example can enumerate: high density polyethylene(HDPE) (HDPE), medium-density polyethylene, Low Density Polyethylene (LDPE), straight chain shape Low Density Polyethylene (LLDPE), polypropylene, poly-1-butylene, poly--4-methyl-1-pentene, ethylene propylene copolymer, the ethene butene-1 copolymer, ethene 1-hexene copolymer, the ethene 4 methyl 1 pentene copolymer, ethene 1-octene copolymer, ethylene methyl acrylate copolymer, the ethylene methacrylic acid methyl terpolymer, ethylene vinyl acetate copolymer, ethylene ethyl acrylate copolymer, ethylene-vinyl alcohol copolymer etc.
Under the situation that substrate layer is made of the multilayer more than two-layer, the preferred selection of the layer of each adjacency can reciprocally form firm bonding material by dissolving coextrusion as the resinous principle that constitutes them.
Substrate layer also can comprise the white color system layer.Comprise the white color system layer by substrate layer, can make the surface protective plate that has excellent weather resistance.
Substrate layer also can comprise black system layer.Comprise black system layer by substrate layer, can make the surface protective plate that has excellent weather resistance.
It is two-layer that substrate layer preferably comprises white color system layer and black system layer at least.At least it is two-layer to comprise white color system layer and black system layer by substrate layer, can make the very excellent surface protective plate of weathering resistance.
At least comprise under white color system layer and the black system layer two-layer situation at substrate layer; stacked formation as surface protective plate of the present invention; only otherwise damage effect of the present invention, for example can adopt suitable stacked formation arbitrarily such as " white color system layer/black system layer/bonding coat ", " black is layer/white color system layer/bonding coat ".Fig. 1 is the sectional view of a configuration example of situation that schematically shows surface protective plate 100 of the present invention and have the stacked formation of " white color system layer 21/ black system layer 22/ bonding coat 10 ".White color system layer 21 and black system layer 22 become substrate layer 20.
The white color system layer is the layer of the tone of display white system, and for example the whiteness of stipulating among the JIS-L-1015 is preferably more than 60%, more preferably more than 70%, more preferably more than 80%, is preferably more than 85% especially.The white color system layer preferably comprises white pigment.As white pigment, can adopt suitable arbitrarily white pigment.As such white pigment, for example can enumerate titanium oxide.Contain at the white color system layer under the situation of white pigment, it contains proportional is 0.1 weight %～50 weight % with respect to the resinous principle that forms the white color system layer preferably, more preferably 1 weight %～40 weight %, more preferably 2 weight %～30 weight %.By will with respect to the resinous principle that forms the white color system layer, white pigment contain proportional being contained in the above-mentioned scope, can make the surface protective plate that has excellent weather resistance, plasticity such as extrudability is also excellent.
The resinous principle that forms the white color system layer is preferably polyolefin-based resins, more preferably acrylic polymer, ethylene-based polymer.As the resinous principle that forms the white color system layer, particularly, can preferably enumerate: homo-polypropylene, block polypropylene, Atactic Polypropelene, high density polyethylene(HDPE) (HDPE), medium-density polyethylene, Low Density Polyethylene (LDPE), straight chain shape Low Density Polyethylene (LLDPE).The white color system layer preferably comprises polyethylene-based resin as main component.Density as this polyethylene-based resin is preferably 0.880g/cm
3～0.940g/cm
3, 0.880g/cm more preferably
3～0.923g/cm
3, 0.880g/cm more preferably
3～0.915g/cm
3Comprise polyethylene-based resin as main component by the white color system layer, substrate layer can have thermotolerance, solvent resistance, pliability, can easily surface protective plate of the present invention be wound into the roller shape.Comprise under the situation of polyethylene-based resin as main component at the white color system layer, preferably this polyethylene-based resin comprises Low Density Polyethylene.Comprise Low Density Polyethylene by above-mentioned polyethylene-based resin, substrate layer can have thermotolerance, solvent resistance, pliability fully, can further easily surface protective plate of the present invention be wound into the roller shape.
Polyolefin-based resins in the white color system layer contain proportional being preferably more than the 60 weight %, more preferably more than the 70 weight %, more preferably more than the 80 weight %, be preferably especially more than the 85 weight %, most preferably be more than the 90 weight %.Such polyolefin-based resins can only use a kind of, also can use two or more.
The thickness of white color system layer also can adopt suitable arbitrarily thickness according to purpose.Such thickness is preferably 2 μ m～100 μ m, 3 μ m～80 μ m more preferably, and more preferably 4 μ m～60 μ m are preferably 5 μ m～50 μ m especially.
Black system layer is for showing the layer of the tone that black is.Black system layer preferably comprises black pigment.As black pigment, can adopt suitable arbitrarily black pigment.As such black pigment, for example can enumerate carbon black.Layer contains under the situation of black pigment in black system, and it contains proportional is 0.01 weight %～10 weight % with respect to the resinous principle that forms black system layer preferably, more preferably 0.1 weight %～5 weight %, more preferably 0.5 weight %～3 weight %.By will with respect to the resinous principle that forms black system layer, black pigment contain proportional being contained in the above-mentioned scope, can make the surface protective plate that has excellent weather resistance, plasticity such as extrudability is also excellent.
The resinous principle that is preferably formed black system layer is polyolefin-based resins, more preferably acrylic polymer, ethylene-based polymer.As the resinous principle that forms black system layer, particularly, can preferably enumerate: homo-polypropylene, block polypropylene, Atactic Polypropelene, high density polyethylene(HDPE) (HDPE), medium-density polyethylene, Low Density Polyethylene (LDPE), straight chain shape Low Density Polyethylene (LLDPE).Black system layer preferably comprises polyethylene-based resin as main component.Density as this polyethylene-based resin is preferably 0.880g/cm
3～0.940g/cm
3, 0.880g/cm more preferably
3～0.923g/cm
3, 0.880g/cm more preferably
3～0.915g/cm
3Comprise polyethylene-based resin as main component by black system layer, substrate layer can have thermotolerance, solvent resistance, pliability, can easily surface protective plate of the present invention be wound into the roller shape.Layer comprises under the situation of polyethylene-based resin as main component in black system, and this polyethylene-based resin preferably comprises Low Density Polyethylene and straight chain shape Low Density Polyethylene.Comprise Low Density Polyethylene and straight chain shape Low Density Polyethylene by above-mentioned polyethylene-based resin, substrate layer can have thermotolerance, solvent resistance, pliability fully, can further easily surface protective plate of the present invention be wound into the roller shape.
Polyolefin-based resins in the black system layer contain proportional being preferably more than the 60 weight %, more preferably more than the 70 weight %, more preferably more than the 80 weight %, be preferably especially more than the 85 weight %, most preferably be more than the 90 weight %.Such polyolefin-based resins can only use a kind of, also can use two or more.
The thickness of black system layer also can adopt suitable arbitrarily thickness according to purpose.Such thickness is preferably 2 μ m～100 μ m, 3 μ m～80 μ m more preferably, and more preferably 4 μ m～60 μ m are preferably 5 μ m～50 μ m especially.
Substrate layer can contain suitable additive arbitrarily.As such additive, for example can enumerate: antioxidant, UV light absorber, protective agent, photostabilizer, static inhibitor, surface lubricant, flow agent, softening agent, low-molecular(weight)polymer, sanitas, stopper, silane coupling agent, inorganic and organic weighting agent (for example, calcium oxide, magnesium oxide, silicon-dioxide, zinc oxide, titanium oxide etc.), metal powder, tinting material, pigment, heat-resisting stabilizing agent, preventing materials accumulation agent (order ヤ ニ prevents drug), lubricant, anti etc.
Substrate layer preferably comprises photostabilizer.Comprise photostabilizer by substrate layer, can give sufficient weathering resistance to surface protective plate of the present invention.
As photostabilizer, in the scope of not damaging effect of the present invention, can adopt suitable arbitrarily photostabilizer.As such photostabilizer, for example can preferably enumerate hindered amine is photostabilizer (HALS).
Comprise at substrate layer under the situation of photostabilizer; this photostabilizer to contain proportional be more than the 0.10 weight % with respect to the weight of surface protective plate integral body of the present invention preferably; 0.20 weight %～0.64 weight % more preferably; more preferably 0.30 weight %～0.60 weight % is preferably 0.34 weight %～0.55 weight % especially.Comprise at substrate layer under the situation of photostabilizer, if with containing of this photostabilizer proportional weight with respect to surface protective plate integral body of the present invention be contained in the above-mentioned scope, just can give weathering resistance more fully to surface protective plate of the present invention.
Also can implement the back side to outermost layer substrate layer and the bonding coat opposition side handles.Method as handle at the back side in the scope of not damaging effect of the present invention, can adopt appropriate means arbitrarily.As the method that handle at such back side, for example can enumerate surface working such as embossing processing or concavo-convex processing, make it to contain the method for derivative of fatty acid etc.Such derivative of fatty acid can only be a kind of, also can be for two or more.
Comprise at substrate layer under the situation of derivative of fatty acid, derivative of fatty acid in this substrate layer contain proportional preferred be 0.05 weight %～1.00 weight % with respect to the resinous principle in the substrate layer, more preferably 0.10 weight %～0.90 weight %, more preferably 0.30 weight %～0.80 weight %.By proportional be contained in the above-mentioned scope with respect to the resinous principle in the substrate layer containing of the derivative of fatty acid in the substrate layer; can easily make the surface protective plate uncoiling of the present invention of making the roller shape; stripping result can be shown fully, the pollution that causes because of oozing out of this derivative of fatty acid can be suppressed simultaneously fully.
As derivative of fatty acid, refer in molecular structure, comprise the compound of derivative of fatty acid structure.
As derivative of fatty acid, for example can enumerate: saturated fatty acid bisamide, unsaturated fatty acids bisamide, fragrant family bisamide, replacement urea, fatty acid metal salt etc.As derivative of fatty acid, particularly, for example can enumerate: methylene-bis stearic amide, ethylenebis stearic amide, ethylenebisoleaamide, N, N-stearyl-N '-stearic amide, Zinic stearass etc. such as N-two oleyl hexanodioic acid acid amides, N-stearyl-N '-stearic urea.
As derivative of fatty acid, be preferably fatty acid amide, more preferably be selected from least a in methylene-bis stearic amide, ethylenebis stearic amide, N-stearyl-N '-stearic amide.
The preferred fusing point of derivative of fatty acid is more than 100 ℃.Fusing point is lower than 100 ℃ the transfer printing of derivative of fatty acid in the bonding coat surface and becomes significantly, might be easy to generate bounding force and reduce.
Preferred bonding coat comprises thermoplastic resin as main component.Thermoplastic resin contained in the bonding coat can only be a kind of, also can be for two or more.
As thermoplastic resin, can adopt suitable arbitrarily thermoplastic resin.As such thermoplastic resin, for example can enumerate: ethylene series resin, the olefin/diene copolymers that contains aromatic group, phenylethylene resin series, ester are resin etc.In these thermoplastic resins, optimization styrene is resin, more preferably styrene series thermoplastic elastomer.
As styrene series thermoplastic elastomer, preferably can enumerate: hydrogenated styrene-divinyl rubber (HSBR), styrene block copolymer or its hydride.
As styrene block copolymer, for example can enumerate: styrene butadiene styrene multipolymer (SBS), styrene isoprene styrol copolymer polystyrene ABA block polymer (triblock copolymer) such as (SIS); Styrene butadiene styrene butadienecopolymer (SBSB), styrene isoprene styrene isoprene multipolymer polystyrene ABAB type segmented copolymers (Tetrablock copolymer) such as (SISI); Styrene butadiene styrene butadienestyrene copolymer (SBSBS), styrene isoprene styrene isoprene styrol copolymer polystyrene ABABA type segmented copolymers (five segmented copolymers) such as (SISIS); Has the styrene block copolymer of its above AB repeating unit etc.
As the hydride of styrene block copolymer, for example can enumerate: the multipolymer (SEBSEB) of styrene ethylene-butylene copolymer styrol copolymer (SEBS), styrene ethylene-propylene copolymer styrol copolymer (SEPS), styrene ethylene-butylene copolymer styrene ethylene-butylene copolymer etc.
Styrene series thermoplastic elastomer can only use a kind of, also can use two or more.
Styrene content in the styrene series thermoplastic elastomer (being styrene block content under the situation of styrene block copolymer) is preferably 1 weight %～40 weight %, 5 weight %～40 weight % more preferably, 7 weight %～30 weight % more preferably, further be preferably 9 weight %～20 weight %, be preferably 9 weight %～15 weight % especially, most preferably be 9 weight %～13 weight %.If above-mentioned styrene content tails off, then may be easy to generate because the cull that the cohesive force deficiency of bonding coat causes.If it is many that above-mentioned styrene content becomes, then might the possible hardening of bonding coat and can't obtain the binding property good with respect to asperities.
As styrene series thermoplastic elastomer, preferably has the hydride (SEBS, SEBSEB, SEBSEBS etc.) of the styrene block copolymer of the repeating structure (ABA type, ABAB type, ABABA type etc.) more than the triblock copolymer that is constituted by vinylbenzene (A) and divinyl (B).By adopting such styrene series thermoplastic elastomer, can further moderately improve to by the bonding force under the adherend sticking state, on the other hand, bonding force when peeling off after pasted by adherend is the further size of appropriateness, therefore, with slight power just can be further easily from being peeled off by adherend, and then, can further suppress to be exposed to the rising of the bonding force under the situation of carrying capacity of environment of the prolonged preservation under the higher temperatures.
At styrene series thermoplastic elastomer for having under the situation by the hydride (SEBS, SEBSEB, SEBSEBS etc.) of the styrene block copolymer of the repeating structure (ABA type, ABAB type, ABABA type etc.) more than the triblock copolymer of vinylbenzene (A) and divinyl (B) formation, the ratio of shared butylene structure is preferably more than the 60 weight % in the ethylene-butene copolymer block, more preferably more than the 70 weight %, more preferably more than the 75 weight %.Be contained in the above-mentioned scope by the ratio with butylene structure shared in the above-mentioned ethylene-butene copolymer block, can be further appropriateness improve to by the bonding force under the adherend sticking state, on the other hand, bonding force when peeling off after pasted by adherend is the further size of appropriateness, thereby, just can be further easily from being peeled off by adherend with slight power, and then, can further suppress to be exposed to the rising of the bonding force under the situation of carrying capacity of environment of the prolonged preservation under the higher temperatures.In addition, the ratio of shared butylene structure is preferably below the 90 weight % in the above-mentioned ethylene-butene copolymer block.
For bonding coat, be purpose with fusible adjusting etc., in the scope of not damaging purpose of the present invention, also can comprise other styrene series thermoplastic elastomer.
As other styrene series thermoplastic elastomer, can enumerate: the styrene block copolymer beyond above-mentioned; The multipolymer (SEB) of styrene-butadiene-copolymer (SB), styrene isoprene multipolymer (SI), styrene ethylene-butylene copolymer, the multipolymer AB type block polymers such as (SEP) of styrene ethylene-propylene copolymer; Styrene butadiene ribber polystyrene random copolymerss such as (SBR); The vinylbenzene alkene crystal system block polymer of the multipolymer A-B-C types such as (SEBC) of styrene ethylene-butylene copolymer alkene crystallization; These hydride etc.
When forming bonding coat, be purpose with control adhesion characteristic etc., tenderizer as required also can suit for example to add as be used for, tackifier, the polyolefin-based resins of substrate layer and so on, the silicone-based polymkeric substance, aqueous acrylic copolymer, the phosphoric acid ester based compound, protective agent, photostabilizer, UV light absorber, surface lubricant, flow agent, softening agent, low-molecular(weight)polymer, antioxidant, sanitas, stopper, silane coupling agent, inorganic and organic weighting agent (for example, calcium oxide, magnesium oxide, silicon-dioxide, zinc oxide, titanium oxide etc.), metal powder, tinting material, pigment, additives such as heat-resisting stabilizing agent.
Also embodiment such as Corona discharge Treatment, uviolizing processing, flame treating, Cement Composite Treated by Plasma, sputter etching processing etc. are the surface treatment of purpose with fusible control or sticking operation etc. as required on the bonding coat surface.
The cooperation of tackifier is effective for improving bounding force.But, for fear of the cull problem that the reduction that produces cohesive force causes, the use level of tackifier according to the application surface screening glass suit by adherend definite.The use level of tackifier is below the 80 weight % with respect to the base polymer of bonding coat preferably, more preferably below the 40 weight %, more preferably below the 20 weight %.In addition, on the viewpoint that effect of the present invention is brought into play more fully, the softening temperature of tackifier is preferably more than 100 ℃, more preferably more than 105 ℃, more preferably more than 110 ℃, is preferably especially more than 115 ℃.As the higher limit of above-mentioned softening temperature, for example be preferably below 300 ℃, more preferably below 250 ℃, more preferably below 200 ℃.
As tackifier, for example can use petroleum line resins such as aliphatics based copolymer, aromatic series based copolymer, aliphatics aromatic series based copolymer system or ester ring type based copolymer with being not particularly limited; Coumarone-indenes is that resin, terpenic series resin, terpenes phenolic aldehyde are rosin series resins such as resin, polymerized rosin; (alkyl) phenolic aldehyde is resin, diformazan benzene series resin, these the general tackifier that are used for tackiness agent such as hydride.Tackifier can only use a kind of, also can use two or more.In these tackifier, consider the tackifier that preferred hydrogenation is from aspects such as separability or weathering resistancies.In addition, tackifier also can use as with the blend of olefin resin by commercially available tackifier.
The cooperation of tenderizer is effective for improving bounding force.As tenderizer, for example can enumerate: low-molecular-weight diene polymer, polyisobutene, hydrogenated polyisoprene, hydrogenated butadiene polymer, their derivative etc.As such derivative, for example can be illustrated in the derivative that an end or two ends have OH base or COOH base, particularly, can enumerate: hydrogenated butadiene polymer glycol, hydrogenated butadiene polymer single methanol, hydrogenated polyisoprene glycol, hydrogenated polyisoprene single methanol etc.Particularly from suppressing with respect to considered the hydride of 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 such tenderizer, particularly, can obtain the trade(brand)name " KurapreneLIR-200 " of (strain) Kuraray system etc.These tenderizers can only use a kind of, also can use two or more.
The molecular weight of tenderizer can suit to be set at suitable arbitrarily amount, but when molecular weight diminishes, might become material moves to by adherend or the heavy reason of peeling off etc. from bonding coat, on the other hand, when the molecule quantitative change is big, the trend that has the raising effect of bounding force to become and lack, therefore, the number-average molecular weight of tenderizer is preferably 5000～100,000, and more preferably 10,000～50,000.
Under the situation of using tenderizer, its addition can suit to be set at suitable arbitrarily amount, but add quantitative change for a long time, the trend that has the cull when being exposed to high temperature or open air to increase, therefore, preferably the base polymer with respect to bonding coat is below the 100 weight %, more preferably below the 60 weight %, more preferably below the 40 weight %.In addition, the application surface screening glass be under the situation of metal sheet by adherend, preferably when forming bonding coat, do not add tenderizer.
Be purpose to suppress bonding force rising etc., also can in bonding coat, add polyolefin-based resins.Polyolefin-based resins can the illustration resin same with the resin of the formation that is used for substrate layer.This polyolefin-based resins can only be a kind of, also can be for two or more.The use level of this polyolefin-based resins is below the 50 weight % with respect to the base polymer of bonding coat preferably, more preferably below the 30 weight %, more preferably below the 20 weight %.
For bonding coat, also can be as required up to for during practicality, the temporary adhesion dividing plate waits to protect.
The manufacture method of surface protective plate of the present invention preferably is shaped substrate layer and bonding coat formed as one by coextrusion and makes.Thus, can be efficiently and make the surface protective plate of the stepped construction of the thickness with regulation at an easy rate.Be shaped as coextrusion, can adopt the suitable coextrusion arbitrarily of the general manufacturing that is used for film, sheet material etc. to be shaped.Be shaped as coextrusion, for example can adopt blow moulding, coextrusion T-modulus method etc.
Be shaped according to coextrusion, the outermost of the opposition side of the bonding coat of substrate layer and bonding coat do not join dissolving under the heated condition, therefore, do not generate the by product that the outmost thermal degradation when of opposition side of the bonding coat of substrate layer causes, with and by product do not move to bonding coat, demonstrate excellent uncoiling, can suppress the pollution on bonding coat surface.
Embodiment
Below, be specifically described by the present invention of embodiment, but the present invention is not limited to these embodiment.
(mensuration of density)
Density (the g/cm of resin
3) value measured for foundation ISO1183.
(mensuration of initial bonding force)
The initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition that following mensuration draw speed is respectively 0.3m/min, 1m/min, 10m/min, 30m/min.
That is, above-mentioned initial bonding force is measured according to JIS-Z-0237 (2000).Particularly, use the conduct of SUS430BA plate by adherend, clean the surface of this SUS430BA plate with toluene after, make the 2kg roller make a round trip crimping evaluation sample, after 30 minutes, use internally-oriented tensile testing machine (Shimadzu Seisakusho Ltd.'s corporate system, Autograph), draw speed is set at above-mentioned speed, peels off with 180 degree and measure initial bonding force.At this moment, mensuration environment and preservation environment carry out for 50% time in 23 ℃/humidity of temperature.
In addition, with regard to bonding force speed dependent rate of rise, when initial bonding force maximum in the initial bonding force of the following 180 ° of relative SUS430BA plates when peeling off of the condition that draw speed is respectively 0.3m/min, 1m/min, 10m/min, 30m/min is made as maximum initial bonding force Q (N/20mm), calculate by bonding force speed dependent rate of rise (%)=(Q/P) * 100 (%).
(preserving the mensuration of bonding force)
Following mensuration stick on the SUS430BA plate and under the condition of 40 ℃ of temperature, humidity 92%RH, preserve under two week back, the draw speed 10m/min 180 ° when peeling off the preservation bonding force and stick on the SUS430BA plate and under the condition of 50 ℃ of temperature, humidity 50%RH, preserve under two week back, the draw speed 10m/min 180 ° of preservation bonding forces when peeling off.
That is, above-mentioned preservation bonding force is for measuring according to JIS-Z-0237 (2000).Particularly, use the conduct of SUS430BA plate by adherend, clean the surface of this SUS430BA plate with toluene after, make the 2kg roller make a round trip crimping evaluation sample, after between above-mentioned preservation period, use internally-oriented tensile testing machine (Shimadzu Seisakusho Ltd.'s corporate system, Autograph), draw speed is set at above-mentioned speed, peels off to measure with 180 degree and preserve bonding force.At this moment, measuring environment carries out for 50% time in 23 ℃/humidity of temperature.
(mensuration of the bonding force after the atmospheric exposure test)
After following mensuration sticks on the SUS430BA plate and carries out 750 hours sunlight weather resistance test, the following 180 ° of bonding forces when peeling off of draw speed 10m/min.
Surface protective plate is cut into the oblong-shaped of width 20mm, make to estimate and use sample.Use the conduct of SUS430BA plate by adherend, clean the surface of this SUS430BA plate with toluene after, make the 2kg roller make a round trip crimping evaluation sample, put into sunlight carbon arc weather resistance test meter (Suga trier Co., Ltd. system) 750 hours, then, carry out 180 ° with an end of sample to the length of 100mm from this evaluation with the peeling rate of 10m/min and peel off, measure bonding force.At this moment, measuring environment carries out for 50% time in 23 ℃/humidity of temperature.
(coextrusion shaping condition)
In embodiment and comparative example, the temperature condition that dissolves according to following forms by blow moulding.
Substrate layer: 165 ℃
Bonding coat: 165 ℃
Coextrusion temperature: 165 ℃
[embodiment 1]
With respect to Low Density Polyethylene (Tosoh system, trade(brand)name: Petrothene186R, density=0.924g/cm
3), Ti-Pure R103), UV light absorber (UVA, BASF system, trade(brand)name: Tinuvin326), hindered amine is photostabilizer (HALS, BASF system, trade(brand)name: Tinuvin783), obtain the white color system layer and form material according to containing of table 1 of proportional cooperation white pigment (titanium oxide, Dupont system, trade(brand)name:.
Then, with respect to by Low Density Polyethylene (Tosoh system, trade(brand)name: Petrothene186R, density=0.924g/cm
3) 85 weight % and straight chain shape Low Density Polyethylene (Sumitomo Chemical system, trade(brand)name: ExcellenFX FX307, density=0.890g/cm
3) resin compound that constitutes of 10 weight %, cooperate carbon black MB (firmly change color system, trade(brand)name: Black SPEMB-865, carbon content 20%) 5 weight %, obtain black system layer and form a material.
And then, (hydrogenation SEBS, styrene content=15 weight %, JSR system, trade(brand)name: Dynaron8600P) (C5 is that hydrogenated aromatic petroleum resin, bright dipping emergingly produce, trade(brand)name: 18 weight % Aimerb P140) obtain bonding coat and form material for 82 weight % and tackifier to cooperate SEBS.
Use the white color system layer that obtains in above-mentioned to form that material, black system layer form a material, bonding coat forms material; by utilizing the co-extrusion modling of blow moulding, obtain surface protective plate (the 1) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 2]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 2) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 3]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 3) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 4]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 4) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 5]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 5) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 6]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 6) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 7]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 7) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 8]
As table 1, change the cooperation of white color system layer formation material; in addition; carry out similarly to Example 1, obtain surface protective plate (the 8) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 1.
[embodiment 9]
As table 2, change the cooperation of white color system layer formation material; as table 2, change the thickness of each layer; in addition; carry out similarly to Example 1, obtain surface protective plate (the 9) (thickness: the white color system layer/layer/bonding coat=10 μ m/40 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 2.
[embodiment 10]
As table 2, change the cooperation of white color system layer formation material; as table 2, change the thickness of each layer; in addition; carry out similarly to Example 1, obtain surface protective plate (the 10) (thickness: the white color system layer/layer/bonding coat=15 μ m/40 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 2.
[embodiment 11]
As table 2, change the cooperation of white color system layer formation material; as table 2, change the thickness of each layer; in addition; carry out similarly to Example 1, obtain surface protective plate (the 11) (thickness: the white color system layer/layer/bonding coat=6 μ m/49 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 2.
[embodiment 12]
Do not form the white color system layer, as table 2, change the thickness of each layer, in addition, carry out similarly to Example 1, obtain surface protective plate (the 12) (thickness: the layer/bonding coat=55 μ m/5 μ m of black system) of double-layer structure (black system layer/bonding coat).
Show the result in table 2.
[embodiment 13]
With respect to Low Density Polyethylene (Tosoh system, trade(brand)name: Petrothene 186R, density=0.924g/cm
3), Ti-Pure R103), hindered amine is photostabilizer (HALS, BASF system, trade(brand)name: Tinuvin783), obtain the white color system layer and form material according to containing of table 3 of proportional cooperation white pigment (titanium oxide, Dupont system, trade(brand)name:.
Then, with respect to by Low Density Polyethylene (Tosoh system, trade(brand)name: Petrothene 186R, density=0.924g/cm
3) 85 weight % and straight chain shape Low Density Polyethylene (Sumitomo Chemical system, trade(brand)name: ExcellenFX FX307, density=0.890g/cm
3) resin compound that constitutes of 10 weight %, cooperate carbon black MB (firmly change color system, trade(brand)name: Black SPEMB-865, carbon content 20%) 5 weight %, obtain black system layer and form a material.
And then, (styrene content=10 weight %, JSR system, trade(brand)name: Dynaron1321P) (C5 is hydrogenated aromatic petroleum resin, Eastman Chemical system, trade(brand)name: 18 weight % EASTOTAC C115W) obtain bonding coat and form material for 82 weight % and tackifier to cooperate HSBR.
Use the white color system layer that obtains in above-mentioned to form that material, black system layer form a material, bonding coat forms material; by utilizing the co-extrusion modling of blow moulding, obtain surface protective plate (the 13) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 3.
[embodiment 14]
The thickness of black system layer is made as 45 μ m; in addition; carry out similarly to Example 13, obtain surface protective plate (the 14) (thickness: the white color system layer/layer/bonding coat=20 μ m/45 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 3.
[embodiment 15]
As tackifier; use Aimerb P140 (C5 is the hydrogenated aromatic petroleum resin, bright dipping is emerging produces) to replace EASTOTAC C115W; in addition; carry out similarly to Example 13, obtain surface protective plate (the 15) (thickness: the white color system layer/layer/bonding coat=20 μ m/35 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 3.
[embodiment 16]
The thickness of black system layer is made as 45 μ m; in addition; carry out similarly to Example 15, obtain surface protective plate (the 16) (thickness: the white color system layer/layer/bonding coat=20 μ m/45 μ m/5 μ m of black system) of three-decker (white color system layer/black system layer/bonding coat).
Show the result in table 3.
[comparative example 1]
As table 2, change the cooperation of white color system layer formation material, in addition, carry out similarly to Example 1, obtain the white color system layer and form material.
Then, carry out similarly to Example 1, obtain black system layer and form material.
Use the white color system layer that obtains in above-mentioned to form material, black system layer forms a material, by blow moulding, obtains the base material film (thickness: the white color system layer/layer=35 μ m/25 μ m of black system) of double-layer structure (white color system layer/black system layer).
And then; cooperate to mould and separate that (C5 is fatty family hydrocarbon hydrogenated petroleum resin, waste river chemistry system, trade(brand)name: 20 weight % ARKON P100) for the natural rubber 80 weight % of Mn=15 ten thousand, Mw=82 ten thousand, Mw/Mn=5.7 and tackifier; be the liquid that 25% mode is regulated dissolving with toluene with solid component concentration; be that the mode of 5 μ m is coated on the above-mentioned base material film with the thickness of dried bonding coat; carry out (90 ℃ * 3min), obtain surface protective plate (C1) (thickness: the white color system layer/layer/bonding coat=35 μ m/25 μ m/5 μ m of black system) of dryings.
Show the result in table 2.
[comparative example 2]
As table 2, change the white color system layer and form the cooperation of material, as table 2, change the thickness of each layer, in addition and embodiment 1 similarly carry out, obtain the white color system layer and form material.
Then, carry out similarly to Example 1, obtain black system layer and form material.
Use the white color system layer that obtains in above-mentioned to form material, black system layer forms a material, by blow moulding, obtains the base material film (thickness: the white color system layer/layer=40 μ m/30 μ m of black system) of double-layer structure (white color system layer/black system layer).
And then; cooperate to mould and separate that (C5 is fatty family hydrocarbon hydrogenated petroleum resin, waste river chemistry system, trade(brand)name: 20 weight % ARKON P100) for the natural rubber 80 weight % of Mn=15 ten thousand, Mw=82 ten thousand, Mw/Mn=5.7 and tackifier; be the liquid that 25% mode is regulated dissolving with toluene with solid component concentration; be that the mode of 5 μ m is coated on the above-mentioned base material film with the thickness of dried bonding coat; carry out (90 ℃ * 3min), obtain surface protective plate (C2) (thickness: the white color system layer/layer/bonding coat=40 μ m/30 μ m/5 μ m of black system) of dryings.
Show the result in table 2.
[comparative example 3]
As table 2, change the cooperation of white color system layer formation material, in addition, carry out similarly to Example 1, obtain the white color system layer and form material.
Then, carry out similarly to Example 1, obtain black system layer and form material.
Use the white color system layer that obtains in above-mentioned to form material, black system layer forms a material, by blow moulding, obtains the base material film (thickness: the white color system layer/layer=35 μ m/35 μ m of black system) of double-layer structure (white color system layer/black system layer).
And then; cooperate and mould natural rubber 80 weight % and tackifier (rosin series tackifier, waste river chemistry system, the trade(brand)name: PINECRYSTALKE-100) 20 weight % of separating to Mn=15 ten thousand, Mw=82 ten thousand, Mw/Mn=5.7; be the liquid that 25% mode is regulated dissolving with toluene with solid component concentration; be that the mode of 5 μ m is coated on the above-mentioned base material film with the thickness of dried bonding coat; carry out (90 ℃ * 3min), obtain surface protective plate (C3) (thickness: the white color system layer/layer/bonding coat=35 μ m/35 μ m/5 μ m of black system) of dryings.
Show the result in table 2.
By table 1, table 2, table 3 as can be known; surface protective plate of the present invention is the surface protective plate that comprises substrate layer and bonding coat; wherein; to by the enough height of the bonding force under adherend sticking state appropriateness; on the other hand; bonding force when peeling off after being pasted by adherend is the size of appropriateness; therefore; just can be easily from being peeled off by adherend with slight power; and then; can suppress to be exposed to the rising of bonding force of situation of the carrying capacity of environment of the prolonged preservation under the higher temperatures, in addition, possess sufficient weathering resistance.
Utilizability on the industry
Surface protective plate of the present invention for example when opticses such as parts, polarizing coating, liquid crystal panel, electronic units such as carrying, processing or maintenance metal sheet, coated plate, aluminum alloy frame, resin board, decorative steel plate, vinylchlorid laminate steel, sheet glass etc. etc., can be used for sticking on purposes of protecting on these the surface etc.
Claims (15)
1. surface protective plate, it comprises substrate layer and bonding coat,
This substrate layer and this bonding coat form as one by coextrusion and form,
The initial bonding force P of described surface protective plate 180 ° of relative SUS430BA plates when peeling off under the condition of draw speed 0.3m/min is more than the 2.0N/20mm,
Be respectively under the condition of 0.3m/min, 1m/min, 10m/min, 30m/min in the initial bonding force of 180 ° of relative SUS430BA plates when peeling off at draw speed, maximum maximum initial bonding force Q (N/20mm) is below 150% of P.
2. surface protective plate according to claim 1, wherein,
Described substrate layer comprises polyolefin-based resins as main component.
3. surface protective plate according to claim 1 and 2, wherein,
Described substrate layer comprises the white color system layer.
4. surface protective plate according to claim 3, wherein,
Described white color system layer comprises polyethylene-based resin as main component.
5. surface protective plate according to claim 4, wherein,
Described polyethylene-based resin comprises Low Density Polyethylene.
6. according to each described surface protective plate in the claim 1～5, wherein,
Described substrate layer comprises black system layer.
7. surface protective plate according to claim 6, wherein,
Described black is that layer comprises polyethylene-based resin as main component.
8. surface protective plate according to claim 7, wherein,
Described polyethylene-based resin comprises Low Density Polyethylene and straight chain shape Low Density Polyethylene.
9. according to each described surface protective plate in the claim 1～8, wherein,
Described substrate layer comprises photostabilizer.
10. surface protective plate according to claim 9, wherein,
Described photostabilizer is that hindered amine is photostabilizer.
11. according to claim 9 or 10 described surface protective plates, wherein,
The proportional weight with respect to described surface protective plate integral body that contains of described photostabilizer is more than the 0.10 weight %.
12. according to each described surface protective plate in the claim 1～11, wherein,
Described bonding coat comprises styrene series thermoplastic elastomer.
13. according to each described surface protective plate in the claim 1～12, wherein,
Be pasted on the SUS430BA plate and after preserving for two weeks under the condition of 40 ℃ of temperature, humidity 92%RH, 180 ° of preservation bonding forces when peeling off are below the 7.0N/20mm under the condition of draw speed 10m/min.
14. according to each described surface protective plate in the claim 1～13, wherein,
Be pasted on the SUS430BA plate and after preserving for two weeks under the condition of 50 ℃ of temperature, humidity 50%RH, 180 ° of preservation bonding forces when peeling off are below the 6.0N/20mm under the condition of draw speed 10m/min.
15. according to each described surface protective plate in the claim 1～14, wherein,
After being pasted on the SUS430BA plate and carrying out 750 hours sunlight weather resistance test, 180 ° of bonding forces when peeling off are below the 8.0N/20mm under the condition of draw speed 10m/min.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103693402A CN103254826A (en) | 2012-02-15 | 2012-09-27 | Surface protection sheet |
| PCT/JP2013/052143 WO2013121888A1 (en) | 2012-02-15 | 2013-01-31 | Surface-protecting sheet |
| TW102104981A TW201350339A (en) | 2012-02-15 | 2013-02-07 | Surface-protecting sheet |
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| CN2012103693402A CN103254826A (en) | 2012-02-15 | 2012-09-27 | Surface protection sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189317A (en) * | 2005-06-06 | 2008-05-28 | 积水化学工业株式会社 | Surface protective film |
| JP2009241338A (en) * | 2008-03-31 | 2009-10-22 | Dainippon Printing Co Ltd | Protection film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189317A (en) * | 2005-06-06 | 2008-05-28 | 积水化学工业株式会社 | Surface protective film |
| JP2009241338A (en) * | 2008-03-31 | 2009-10-22 | Dainippon Printing Co Ltd | Protection film |
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Application publication date: 20130821 |