WO2009096298A1 - 積層フィルムおよび成形体、反射体 - Google Patents
積層フィルムおよび成形体、反射体 Download PDFInfo
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- WO2009096298A1 WO2009096298A1 PCT/JP2009/050917 JP2009050917W WO2009096298A1 WO 2009096298 A1 WO2009096298 A1 WO 2009096298A1 JP 2009050917 W JP2009050917 W JP 2009050917W WO 2009096298 A1 WO2009096298 A1 WO 2009096298A1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
- G02B5/0841—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only comprising organic materials, e.g. polymers
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- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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Definitions
- the present invention relates to a laminated film in which layers made of at least two kinds of resins are laminated, and a molded body or a reflector made of the laminated film.
- the most commonly used technique for imparting a metallic tone to various molded parts is painting. Although painting can give various designs and functions to products, it often uses organic solvents and has a great impact on the environment. In addition, recycling may not be easy due to the influence of the coating film, and the existence of a coating process is regarded as a problem in the recent increase in environmental problems.
- plating and vapor deposition as another method for imparting a metallic tone.
- plating or vapor deposition there is a problem that recycling is difficult due to the metal layer.
- plating since the influence of heavy metals on the environment is great, an alternative is strongly demanded.
- plating or vapor deposition because of its electromagnetic shielding properties due to its metal layer, it is becoming a problem when used as a decorative material for automobiles and mobile phones, which may cause radio interference. .
- Patent Document 3 there is a non-colored metallic glossy film realized by appropriately adjusting the refractive index difference of the resin used to suppress delamination and forming a special layer structure.
- Patent Document 3 when trying to manufacture a film having a low reflectance such as a half mirror, there is a problem that the film is slightly colored and an interference fringe pattern is easily seen.
- the distribution of the layer thickness is greatly different between the front and back, there is a problem that warping or the like occurs due to the difference in heat shrinkage and thermal expansion characteristics between the front and back when formed into a molded body.
- washOut is a phenomenon in which the film and ink near the gate portion melt and flow.
- a part of the layer is bent and deformed, so that the interference reflection wavelength is shifted, resulting in a specific discoloration, which is a problem.
- the present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a film that has a natural metallic tone or a half-mirror tone, does not have coloring or delamination, and that interference fringes are difficult to see. It is another object of the present invention to provide a molded body and a reflector that have a low environmental load, are excellent in recyclability, do not cause electromagnetic interference, and are free from warpage or WashOut.
- the laminated film of the present invention is a laminated film having a laminate number of 200 or more comprising at least a layer made of resin A and a layer made of resin B, and the layer thickness is 10 nm or more and 1000 nm or less.
- the layer made of the resin A is defined as a layer group L.
- the layer group L includes a layer La, a layer Lb, and a layer Lc. From one surface to the other surface, the layer La, the layer Lb, and the layer Lc are arranged in this order.
- the layers La and Lc are equal in thickness, and include at least 30 layers of resin A between the layers La and Lc, and the layer thickness of the layer La is equal to the layer thickness of the layer Lb. 1.4 times or more or 0.7 times or less
- the laminated film of the present invention has a natural metallic tone or a half mirror tone, has no coloring or delamination, and interference fringes are difficult to see.
- the molded body or reflector comprising the laminated film of the present invention is excellent in recyclability, does not shield electromagnetic waves, and does not have warpage or WashOut.
- the laminated film of the present invention is a laminated film having at least 200 layers comprising a layer made of resin A and a layer made of resin B, and has a layer thickness of 10 nm to 1000 nm.
- the layer made of the resin A is defined as a layer group L.
- the layer group L includes a layer La, a layer Lb, and a layer Lc. From one surface to the other surface, the layer La, the layer Lb, and the layer Lc are arranged in this order.
- the layers La and Lc are equal in thickness, and include at least 30 layers of resin A between the layers La and Lc, and the layer thickness of the layer La is equal to the layer thickness of the layer Lb. It must be 1.4 times or more or 0.7 times or less.
- Such a film has a natural metallic tone or a half mirror tone, but has no coloring or delamination, and interference fringes are difficult to see.
- the laminated film of the present invention is composed of a polymer, it becomes a metallic film that transmits electromagnetic waves.
- the electromagnetic wave means a part of infrared rays and a frequency of 3 Hz to 3 THz.
- the resin A or resin B in the present invention may be either a thermoplastic resin or a curable resin. Further, it may be a homo resin, a copolymer resin or a blend of two or more. More preferably, it is a thermoplastic resin because of good moldability.
- various additives such as antioxidants, antistatic agents, crystal nucleating agents, inorganic particles, organic particles, viscosity reducers, thermal stabilizers, lubricants, infrared absorbers, ultraviolet absorbers, A dopant for adjusting the refractive index may be added.
- thermoplastic resins include polyolefin resins such as polyethylene, polypropylene, polystyrene, and polymethylpentene, alicyclic polyolefin resins, polyamide resins such as nylon 6 and nylon 66, aramid resins, polyethylene terephthalate, polybutylene terephthalate, and polypropylene terephthalate.
- Polybutyl succinate Polyester resin such as polyethylene-2,6-naphthalate, polycarbonate resin, polyarylate resin, polyacetal resin, polyphenylene sulfide resin, tetrafluoroethylene resin, trifluoroethylene resin, trifluorochloroethylene resin ⁇ Fluorine resin such as ethylene tetrafluoride-6-propylene copolymer / vinylidene fluoride resin, acrylic resin, methacrylic resin, polyacetal resin It can be used polyglycolic acid resin, polylactic acid resin, and the like. Among these, polyester is particularly preferable from the viewpoint
- the polyester referred to in the present invention refers to a homopolyester or a copolyester that is a polycondensate of a dicarboxylic acid component skeleton and a diol component skeleton.
- typical examples of the homopolyester include polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalate, poly-1,4-cyclohexanedimethylene terephthalate, polyethylene diphenylate, and the like.
- polyethylene terephthalate is preferable because it is inexpensive and can be used in a wide variety of applications.
- the copolyester in the present invention is defined as a polycondensate comprising at least three or more components selected from the following components having a dicarboxylic acid skeleton and components having a diol skeleton.
- Components having a dicarboxylic acid skeleton include terephthalic acid, isophthalic acid, phthalic acid, 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, and 4,4′-diphenyldicarboxylic acid.
- 4,4′-diphenylsulfone dicarboxylic acid 4,4′-diphenylsulfone dicarboxylic acid, adipic acid, sebacic acid, dimer acid, cyclohexanedicarboxylic acid and ester derivatives thereof.
- Components having a glycol skeleton include ethylene glycol, 1,2-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentadiol, diethylene glycol, polyalkylene glycol, 2,2-bis (4′- ⁇ -hydroxyethoxyphenyl) propane, isosorbate, 1,4-cyclohexanedimethanol, spiroglycol and the like.
- the in-plane average refractive index of the layer made of the resin A is relatively higher or lower than the in-plane average refractive index of the layer made of the resin B.
- the difference between the in-plane average refractive index of the A layer and the in-plane average refractive index of the B layer is preferably 0.03 or more. More preferably, it is 0.05 or more, More preferably, it is 0.1-0.15. When the refractive index difference is smaller than 0.03, a sufficient reflectance cannot be obtained, which is not preferable.
- the difference between the in-plane average refractive index and the thickness direction refractive index of the A layer is 0.03 or more, and the difference between the in-plane average refractive index and the thickness direction refractive index of the B layer is 0.03 or less, the incident angle Even if becomes larger, the reflectance of the reflection peak does not decrease, which is more preferable.
- the absolute value of the difference in SP value between the resin A and the resin B is 1.0 or less.
- the absolute value of the difference in SP value is 1.0 or less, delamination hardly occurs.
- it has a layer made of the resin A and a layer made of the resin B containing the same basic skeleton as the resin A.
- the basic skeleton is a repeating unit constituting the resin.
- one resin is polyethylene terephthalate
- ethylene terephthalate is the basic skeleton.
- ethylene is a basic skeleton.
- the SP value referred to in the present invention uses a small calculation method. For details on the small calculation method, see "Polymer Data Handbook -Basics-" (published by Baifukan, 1986).
- the glass transition temperature difference between the resin A and the resin B is 20 ° C. or less.
- the glass transition temperature difference is larger than 20 ° C., the thickness uniformity at the time of forming the laminated film becomes poor and the appearance of metallic luster becomes poor. Also, when a laminated film is formed, problems such as overstretching tend to occur.
- the resin A is a polyester comprising polyethylene terephthalate or polyethylene naphthalate and the resin B is a polyester comprising spiroglycol.
- the polyester comprising spiroglycol refers to a copolyester copolymerized with spiroglycol, a homopolyester, or a polyester blended with them. Polyesters containing spiroglycol are preferred because they have a small glass transition temperature difference from polyethylene terephthalate or polyethylene naphthalate, so that they are not easily stretched at the time of molding and are also difficult to delaminate.
- the resin A comprises polyethylene terephthalate or polyethylene naphthalate
- the resin B is a polyester comprising spiroglycol and cyclohexanedicarboxylic acid. If the resin B is a polyester comprising spiroglycol and cyclohexanedicarboxylic acid, the difference in the in-plane refractive index from polyethylene terephthalate or polyethylene naphthalate is increased, so that high reflectance is easily obtained.
- the glass transition temperature difference with polyethylene terephthalate or polyethylene naphthalate is small and the adhesiveness is excellent, it is difficult to be over-stretched at the time of molding and is also difficult to delaminate.
- the resin A is a polyester comprising polyethylene terephthalate or polyethylene naphthalate
- the resin B is a polyester comprising cyclohexanedimethanol.
- the polyester comprising cyclohexanedimethanol refers to a copolyester obtained by copolymerizing cyclohexanedimethanol, a homopolyester, or a polyester obtained by blending them. Polyesters containing cyclohexanedimethanol are preferred because they have a small glass transition temperature difference from polyethylene terephthalate or polyethylene naphthalate, so that they are unlikely to be overstretched during molding and are also difficult to delaminate.
- the resin B is an ethylene terephthalate polycondensate having a copolymerization amount of cyclohexanedimethanol of 15 mol% to 60 mol%.
- the change in optical characteristics due to heating and aging is particularly small, and peeling between layers is less likely to occur.
- An ethylene terephthalate polycondensate having a copolymerization amount of cyclohexanedimethanol of 15 mol% or more and 60 mol% or less adheres very strongly to polyethylene terephthalate.
- the cyclohexanedimethanol group has a cis or trans isomer as a geometric isomer, and a chair type or a boat type as a conformational isomer.
- the change in optical characteristics due to thermal history is even less, and blurring during film formation hardly occurs.
- the laminated film of the present invention must be a laminated film having at least 200 layers including a layer made of resin A and a layer made of resin B.
- the number of stacked layers is more preferably 400 or more, and still more preferably 700 or more. The greater the number of layers, the higher the reflectance and the easier it is to widen the reflection band.
- the layer group L made of the resin A having a layer thickness of 10 nm to 1000 nm must be provided. That is, the layer group L is a layer made of the resin A having a layer thickness of 10 nm or more and 1000 nm or less included in the laminated film.
- the number of layers included in the layer group L is preferably 90 or more. More preferably, it is 190 or more. More preferably, it is 340 or more.
- the layers included in the layer group L are not necessarily adjacent to each other, and a layer having a layer thickness of less than 10 nm or a layer made of the resin A having a layer thickness of more than 1000 nm may be interposed.
- FIG. 1 is a plot of the layer thickness of a layer made of resin A of a film in which layers made of resin A and layers made of resin B are alternately laminated with respect to each layer order (hereinafter referred to as layer number). . Accordingly, in the figure, although it can also be seen in a line shape, the layer thickness corresponds only to the integer layer number, the layer with the odd layer number is a layer made of the resin A, and the layer with the even layer number is the resin It is a layer made of B. The same applies to FIGS. 2 to 8.
- Patent Document 3 an example satisfying the layer structure of the conventional technique is similarly illustrated in FIG.
- the layer thickness distribution of the film cross section can be symmetrical or close to symmetrical on the front and back, so that the difference in physical properties between the front and back can be suppressed. It is possible to suppress curling that occurs during heating. Furthermore, in order to achieve a metallic tone or a half mirror tone, it is necessary to have a structure in which the layer thickness gradually changes as shown in the figure, but it can be approximated to a monotonically increasing curve or a monotonically decreasing curve as shown in FIG. In the case of the layer structure, particularly when a half mirror is used, coloring is likely to occur because a very small number of stacking faults cause a decrease in reflectance of light of a specific wavelength.
- bending deformation may occur in the layer inside the film near the resin due to heat and shear stress due to the resin supplied from the injection molding machine.
- the layer structure as shown in FIG. 6 when the layer is bent and deformed, there is no complementary layer thickness, so discoloration occurs, resulting in a molding failure called WashOut.
- the layer thickness does not easily occur in the layer inside the film on the opposite side. Can be complemented, and discoloration can be made inconspicuous.
- the layer group L includes a layer La, a layer Lb, and a layer Lc, and is arranged in the order of the layer La, the layer Lb, and the layer Lc from one surface to the other surface.
- the layer thickness of Lc is equal, and at least 30 layers or more of the layer made of the resin A are included between the layer La and the layer Lc, and the layer thickness of the layer La is 1.4 times the layer thickness of the layer Lb or 0.7 Must be less than double.
- the layer thickness of the layer La and the layer Lc means that the layer thickness of the layer Lc is 0.95 times or more and 1.05 times or less with respect to the layer thickness of the layer La.
- the layer La, the layer Lb, and the layer Lc will be specifically described with reference to FIG. FIG.
- FIG. 3 is an example of a layer thickness configuration according to a preferred embodiment of the present application.
- FIG. 1 will be described as an example.
- FIG. 1 is also an example of a layer thickness configuration of a preferred embodiment of the present application.
- the layer made of the resin A in FIG. 1 can be regarded as a layer group L.
- the layer Lb has a layer number 115 to a layer number 785.
- film thickness may become thick too much. Further, it is more preferable that at least 50 layers of the resin A are included between the layer La and the layer Lb and between the layer Lb and the layer Lc. In such a case, coloring is less and interference unevenness is less visible.
- the layer thickness of the layer La is preferably 1.8 times or more or 0.55 times or less of the layer thickness of the layer Lb. More preferably, the layer thickness of the layer La is 2.5 times or more or 0.4 times or less than the layer thickness of the layer Lb. With such a layer structure, a deviation from the optical design value of the layer thickness can be complemented in the layer group L, so that coloring or the like hardly occurs. In addition, since the unevenness of the layer thickness is randomized, the reflection band is less likely to be rippled and interference fringes are less visible.
- the layer group L includes the layer La, the layer Lb, the layer Lc, and the layer Ld, and the layer La, the layer Lb, the layer Lc, and the layer Ld from one surface to the other surface. It is preferable that the layers Lb and Ld have the same layer thickness, and at least 30 layers or more of the resin A layer are included between the layers Lb and Ld. In the case of such a layer structure, coloring is less likely to occur and interference unevenness is also difficult to see.
- the layer thickness of the layer Lb and the layer Ld means that the layer thickness of the layer Ld is 0.95 times or more and 1.05 times or less with respect to the layer thickness of the layer Lb.
- the thickness of the layer made of the resin A existing between the layer La and the layer Lb becomes gradually thicker or gradually thinner as it goes from the layer La to the layer Lb.
- thicker gradually or “thinning gradually” does not necessarily require the layer thickness to be increased or decreased in the order of layer arrangement, but may be increased or decreased as a whole. If more strictly defined, the layer made of the resin A contained between the layer La and the layer Lb is divided into 10 layers in the order of arrangement of the layers, and the average value of the layer thicknesses in the block follows the order of arrangement. It only needs to increase or decrease.
- the laminated film of the present invention has the layer Ma, the layer Mb, and the layer Mc made of the resin B, the layer La and the layer Ma are adjacent, the layer Lb and the layer Mb are adjacent, and the layer Lc and the layer Mc are adjacent.
- the layer thickness of the layer La is 1.4 times or more of the layer thickness of the layer Lb and the layer thickness of the layer Ma is 1.4 times or more of the layer thickness of the layer Mb, or the layer thickness of the layer La is equal to that of the layer Lb.
- the layer thickness is 0.7 times or less and the layer Ma is 0.7 times or less the layer thickness of the layer Mb. In such a case, since the reflection efficiency is high, it is easy to obtain a film having a high reflectance. More preferably, it is preferable that the ratio of the thickness of the layer made of resin A and the layer made of resin B is substantially constant.
- the resin constituting the layer existing between the layer La and the layer Lc is the resin A or the resin B.
- all the layers contained between the layer closest to one surface in the layer group L and the layer closest to the other surface are made of a thermoplastic resin. This is because when two films are bonded together with an adhesive layer such as a curable resin, foreign matter becomes a problem or foams during molding.
- the layer thickness configuration as shown in FIG. 6 is called a one-step inclined structure
- the layer thickness configuration as shown in FIG. 3 is called a two-step inclined structure
- the thickness structure is referred to as a three-stage inclined structure
- the layer thickness structure shown in FIG. 4 is referred to as a four-stage inclined structure.
- the one-step inclined structure refers to a configuration that can approximate the layer thickness distribution with a single monotonically increasing curve or a monotonically decreasing curve.
- a three-stage inclined structure refers to a configuration that can be approximated by three monotonically increasing curves and / or monotonically decreasing curves.
- the inclined structure has three or more stages, the interference fringes are almost invisible, and even when used as a half mirror, the color hardly changes even when the angle changes.
- an adhesive layer having a layer thickness of 3 ⁇ m or more made of a resin other than the resin A or the resin B is not included.
- an adhesive layer having a layer thickness of 3 ⁇ m or more made of a resin other than the resin A or the resin B is used, wrinkles or peeling occurs during molding due to the influence of the adhesive layer.
- two laminated films are bonded together by dry lamination coating, foreign matter is mixed into the adhesive layer, which causes a problem that the yield as a molded body is lowered.
- a peculiar layer structure is made possible by coextrusion technology without using lamination, so that wrinkles and peeling do not occur at the time of molding and almost no foreign matter is mixed. .
- the number of layers having a layer pair thickness of 10 nm or more and less than 220 nm is preferably larger than the number of layers having a layer pair thickness of 220 nm or more and 320 nm or less.
- the layer pair thickness is a thickness obtained by adding the respective layer thicknesses of a layer made of the resin A (A layer) and a layer made of the resin B (B layer).
- the layer pair thickness should be the sum of the layer thicknesses of the mth A layer counted from one surface for only the A layer and the mth B layer counted from the same surface for only the B layer.
- m represents an integer.
- the A1 layer and the B1 layer are the first layer.
- the A2 layer and the B2 layer are the second layer pair, and the A3 layer and the B3 layer are the third layer pair.
- the number of layers having a layer thickness of 10 nm or more and less than 220 nm is the same as or less than the number of layers having a layer thickness of 220 nm or more and 320 nm or less, the reflectance decreases as the wavelength becomes lower in the reflection band of the wavelength band 400 nm to 1100 nm.
- the layer pair thickness does not increase or decrease monotonically in a monotonic sequence, but the layer pair thickness in a geometric sequence while satisfying the above conditions. It is preferable to increase or decrease. More preferably, the number of layers having a layer pair thickness of 120 nm to 220 nm is preferably 1.05 to 2.5 times the number of layers having a layer pair thickness of 220 nm to 320 nm. In this case, it is possible to obtain a metallic tone without any coloration.
- the laminated film of the present invention preferably has a tensile stress of 3 MPa or more and 90 MPa or less at 100% elongation in the film longitudinal direction and width direction in a tensile test at 150 ° C.
- the moldability is excellent, and in any molding such as vacuum molding, vacuum pressure molding, plug assist vacuum pressure molding, in-mold molding, insert molding, cold molding, press molding, drawing molding, etc. It becomes easy to form into a shape.
- the tensile stress at 100% elongation in the film longitudinal direction and the width direction is 3 MPa or more and 50 MPa or less. In such a case, molding can be performed even with a higher drawing ratio.
- the resin A is a crystalline resin and the resin B is cyclohexanedimethanol, spiro. It is preferably an amorphous resin having a bulky group such as glycol or neopentyl glycol. In such a case, since the resin B is hardly oriented and crystallized even after biaxial stretching, the tensile stress is low.
- the dynamic friction coefficient of at least one surface of the laminated film of the present invention is preferably 0.5 or less.
- the dynamic friction coefficient of the laminated film is 0.5 or less, since the sliding with the mold used for molding is improved, the moldability is further improved.
- the laminated film of the present invention preferably has a layer mainly composed of polyethylene terephthalate or polyethylene naphthalate of 3 ⁇ m or more on at least one side. More preferably, it has a layer mainly composed of polyethylene terephthalate or polyethylene naphthalate of 5 ⁇ m or more. Further, it is more preferable to have a layer mainly composed of polyethylene terephthalate or polyethylene naphthalate of 3 ⁇ m or more on both sides. If there is no layer made of polyethylene terephthalate or polyethylene naphthalate having a size of 3 ⁇ m or more, it is not preferable because the scratches are very visible when the surface is scratched.
- an easy-adhesion layer, an easy-slip layer, a hard coat layer, an antistatic layer, an anti-abrasion layer, an antireflection layer, a color correction layer, an ultraviolet absorption layer, a printing layer, a metal layer are provided on the surface.
- Functional layers such as a transparent conductive layer, a gas barrier layer, a hologram layer, a release layer, an adhesive layer, an emboss layer, and an adhesive layer may be formed.
- the molded body of the present invention must contain the above laminated film.
- a hard coat layer In addition to the laminated film of the present invention, it is also preferable to include any of a hard coat layer, an embossed layer, a weather resistant layer (UV cut layer), a colored layer, an adhesive layer, a base resin layer, and the like.
- a molded body can be composed of an all-polymer and does not contain metal or heavy metal, and therefore has a low environmental load, excellent recyclability, and excellent radio wave permeability.
- the molded product of the present invention preferably has a colored layer. In the laminated film of the present invention, a part of visible light may be transmitted. Therefore, by providing a colored layer, the color of the molded body can be adjusted.
- a molded body can be obtained at low cost.
- Such a molded body can be preferably used for a mobile phone, a telephone, a personal computer, an audio device, a home appliance, a wireless communication device, a radome, an automobile interior / exterior component, a building material, a game machine, an amusement device, a packaging container, and the like.
- the molded article of the present invention is a device having a function of performing information communication wirelessly, such as a mobile phone, a telephone, a personal computer, an audio device, a home appliance, a wireless communication device, an in-vehicle component such as a radome, or a game machine. It is preferably used as a decorative part of a device. Since the molded article of the present invention has a metallic appearance and is excellent in radio wave transmission, it does not cause electromagnetic interference unlike conventional metallic decoration materials. For this reason, when the molded article of the present invention is used as a decorative part of an information communication device, the device can be reduced in size and thickness, and the degree of freedom in circuit design inside the information communication device is increased.
- the laminated film of the present invention can also be used as a half mirror.
- a half-mirror behaves like a mirror under certain conditions and behaves like a transparent body under other conditions. In order to act like a mirror, the light is adjusted so as to minimize the transmitted light.
- the average relative reflectance of the laminated film in the wavelength band of 400 nm to 1000 nm is preferably 30% or more and 70% or less.
- a light shielding layer on at least a part of one side of the laminated film of the present invention, it is possible to simultaneously form a part to be a mirror and a part to be a half mirror. That is, the portion provided with the light shielding layer is like a mirror because light is not constantly transmitted. On the other hand, the portion where the light shielding layer is not provided is a half mirror.
- a layer for shielding light a method of forming a black layer by printing or the like is simple.
- Such a half mirror can be preferably used for a mobile phone, a telephone, a personal computer, an audio device, a home appliance, a wireless communication device, an in-vehicle component, a building material, a game machine, an amusement device, a packaging container, and the like.
- the circuit mounting sheet of the present invention must include at least the above laminated film and a conductive pattern layer. Since the laminated film of the present invention is composed of a polymer while having a metallic appearance, it is not conductive. Therefore, even if the conductive pattern layer is formed, it functions as a circuit without any problem.
- the conductive pattern layer refers to a fine pattern formed by etching of metal stays, printing of metal paste, vapor deposition / sputtering film etching. Moreover, the metal wire used as an antenna and the metal vapor deposition film are also included.
- the conductive substance copper, aluminum, silver or the like is preferable. In particular, copper is most preferable as a transmission / reception characteristic.
- a silver paste capable of forming a conductive pattern by a printing method and low-temperature heat treatment is preferable. These conductive pattern layers have functions as an antenna and a circuit.
- the conductive pattern layer of the present invention may be directly formed on the surface of the laminated film of the present invention.
- a conductive pattern layer is provided on the surface of various heat-resistant films such as polyimide film, polyphenylene sulfide film, liquid crystal film, polyethylene naphthalate film, polyethylene terephthalate film, alicyclic polyolefin film, PETG film, ABS film, PVC film, etc.
- heat-resistant films such as polyimide film, polyphenylene sulfide film, liquid crystal film, polyethylene naphthalate film, polyethylene terephthalate film, alicyclic polyolefin film, PETG film, ABS film, PVC film, etc.
- a method of laminating this and a laminated film with an adhesive or an adhesive is also preferred.
- the circuit mounting sheet of the present invention preferably has a colored layer.
- the colored layer is a colored layer obtained by dispersing pigments or dyes in a resin coating layer, an adhesive layer, or a film / sheet.
- the color is not particularly limited and can be variously selected from the design properties, but black is particularly preferable. In this case, since the reflection color by the laminated film appears to be emphasized, not only the design property is excellent, but also the concealing property is increased, so that it is easy to hide the circuit.
- the laminated film constituting the circuit mounting sheet of the present invention has a three-dimensional shape. That is, since the preferable laminated film of the present invention can be molded while having a high metallic design, a circuit having a complicated shape can also be produced. For example, if the mold into which the copper wire antenna coil is inserted is formed on the laminated film by vacuum pressure forming or the like, the antenna coil can be positioned very easily. Further, in this case, a metallic design with the antenna portion raised can be obtained.
- the laminated film preferably has a saturated moisture content of 1.0% or less. This is because if the saturated moisture content is greater than 1.0%, the reception characteristics may be affected when a non-contact type IC card is used. Also, when used as a circuit, if the saturated moisture content is larger than 1.0%, the interval between circuits may change due to the influence of the humidity expansion coefficient, resulting in insulation failure.
- the IC card / IC label of the present invention must include the circuit mounting sheet. In addition to the circuit mounting sheet of the present invention, it is also preferable to include any one of a hard coat layer, an emboss layer, a weather resistant layer (UV cut layer), a colored layer, an adhesive layer and the like. In such an IC card label, since the circuit base material is composed only of a polymer and does not contain metal or heavy metal, it has a low environmental load, is excellent in recyclability, and does not cause electromagnetic interference.
- the IC card / IC label of the present invention can be applied to various molding methods such as vacuum molding, vacuum pressure molding, plug assist vacuum pressure molding, in-mold molding, insert molding, cold molding, press molding, etc. It is possible to form a shape.
- the IC card / IC label of the present invention is suitable for a wireless IC card or a wireless IC label, and can provide a high-quality RFID tag.
- the bandwidth of the reflection band having a reflectance of 30% or more is preferably 300 nm or more. In such a case, it is easy to obtain a film with high brightness and brightness.
- the laminated film of the present invention preferably has a crosslinkable ink layer having a thickness of 15 ⁇ m or more and 80 ⁇ m or less on at least one side of the laminated film.
- the crosslinkable ink layer has a thickness of 15 ⁇ m or more and 80 ⁇ m or less, the bending phenomenon of the multilayer laminated film during insert molding can be further suppressed, and the WashOut can be reduced even when high temperature resin such as polycarbonate is injected. Becomes easy.
- the thickness is less than 15 ⁇ m, WashOut tends to occur during molding, and when it is thicker than 80 ⁇ m, problems such as curling occur during printing.
- the crosslinkable ink layer is preferably a two-component ink layer comprising a resin component having a hydroxyl group and a crosslinker component.
- a resin component having a hydroxyl group a hydroxyl group-containing polyester resin, a hydroxyl group-containing polyurethane resin, a hydroxyl group-containing poly (meth) acrylic resin and the like are preferable.
- a crosslinking agent component a polyfunctional isocyanate compound is preferable.
- a colorant is preferably contained, and the colorant is coated with white, black pigment, other color pigments, phosphorescent pigment, BL pigment, fluorescent pigment, holographic pigment, pearl pigment, metal oxide.
- the crosslinkable ink layer of the present invention mixes the resin component having a hydroxyl group containing a colorant and the crosslinker component that reacts with the functional group to form a crosslinked structure prior to printing. It may be formed by holding at a constant temperature to promote crosslinking. In conventional insert molding, a transparent film was used, so the slight deformation inside the film was not a problem, but in the case of a multilayer laminated film, the slight deformation inside the layer appeared as a discoloration, so there was a problem It will be.
- the thickness of the crosslinkable ink layer to the film of a preferred embodiment of the present invention and making the thickness 15 ⁇ m or more and 80 ⁇ m or less, even slight deformation inside the film can be suppressed. Thus, it becomes easy to suppress the discoloration phenomenon peculiar to the multilayer laminated film.
- Two types of resins A and B are prepared in the form of pellets.
- the pellets are dried in hot air or under vacuum as necessary, and then supplied to a separate extruder.
- the resin melted by heating to a temperature equal to or higher than the melting point is made uniform in the amount of resin extruded by a gear pump or the like, and foreign matter or denatured resin is removed through a filter or the like.
- Resins A and B sent out from different flow paths using these two or more extruders are then fed into the multilayer laminating apparatus.
- the multi-layer laminating apparatus a multi-manifold die, a feed block, a static mixer, etc. can be used.
- the feed block including the above.
- the change from a thin layer to a thick layer or a change in the layer thickness from a thick layer to a thin layer is very steep as compared with a conventional multilayer laminated film. This is because, in the prior art, the change in the layer thickness in the film has a one-step inclined structure, whereas the present application has a two-step or more inclined structure. Increasing the number of layers easily leads to a decrease in stacking accuracy, but it has been impossible with the prior art to obtain a two or more graded structure while maintaining the number of layers.
- a feed block including at least two members having a large number of fine slits, and to adjust each flow rate corresponding to the thickness of each layer by the gap between the slits.
- the gap accuracy is preferably ⁇ 10 ⁇ m or less.
- the molten laminate formed in the desired layer configuration in this way is then formed into a desired shape by a die and then discharged.
- dye is extruded on cooling bodies, such as a casting drum, and is cooled and solidified, and a casting film is obtained.
- a wire-like, tape-like, needle-like, or knife-like electrode to be brought into close contact with a cooling body such as a casting drum by an electrostatic force and rapidly solidify.
- Biaxial stretching refers to stretching in the longitudinal direction and the width direction. Stretching may be performed sequentially in two directions or simultaneously in two directions. Further, re-stretching may be performed in the longitudinal direction and / or the width direction. In particular, in the present invention, it is preferable to use simultaneous biaxial stretching from the viewpoint of suppressing in-plane orientation difference and suppressing surface scratches.
- stretching in the longitudinal direction refers to stretching for imparting molecular orientation in the longitudinal direction to the film, and is usually performed by a difference in peripheral speed of the roll, and this stretching may be performed in one step. Alternatively, a plurality of roll pairs may be used in multiple stages.
- the stretching ratio varies depending on the type of resin, but usually 2 to 15 times is preferable, and 2 to 7 times is particularly preferable when polyethylene terephthalate is used as one of the resins constituting the laminated film.
- the stretching temperature is preferably from the glass transition temperature of the resin constituting the laminated film to the glass transition temperature + 100 ° C.
- the uniaxially stretched film thus obtained is subjected to surface treatment such as corona treatment, flame treatment, and plasma treatment as necessary, and then functions such as slipperiness, easy adhesion, and antistatic properties are provided. It may be applied by in-line coating.
- the stretching in the width direction refers to stretching for imparting the orientation in the width direction to the film.
- the film is stretched in the width direction using a tenter while being conveyed while holding both ends of the film with clips.
- the stretching ratio varies depending on the type of resin, but usually 2 to 15 times is preferable, and 2 to 7 times is particularly preferable when polyethylene terephthalate is used as one of the resins constituting the laminated film.
- the stretching temperature is preferably from the glass transition temperature of the resin constituting the laminated film to the glass transition temperature + 120 ° C.
- the biaxially stretched film is preferably subjected to a heat treatment not less than the stretching temperature and not more than the melting point in the tenter in order to impart flatness and dimensional stability. After being heat-treated in this way, it is gradually cooled down uniformly, then cooled to room temperature and wound up. Moreover, you may use a relaxation process etc. together in the case of annealing from heat processing as needed.
- the resulting cast film is subjected to surface treatment such as corona treatment, flame treatment, and plasma treatment as necessary, and then, such as slipperiness, easy adhesion, antistatic properties, etc.
- surface treatment such as corona treatment, flame treatment, and plasma treatment as necessary, and then, such as slipperiness, easy adhesion, antistatic properties, etc.
- the function may be imparted by in-line coating.
- the cast film is guided to a simultaneous biaxial tenter, conveyed while holding both ends of the film with clips, and stretched in the longitudinal direction and the width direction simultaneously and / or stepwise.
- simultaneous biaxial stretching machines there are pantograph method, screw method, drive motor method, linear motor method, but it is possible to change the stretching ratio arbitrarily and drive motor method that can perform relaxation treatment at any place or A linear motor system is preferred.
- the stretching ratio varies depending on the type of resin, it is usually preferably 6 to 50 times as the area ratio. When polyethylene terephthalate is used as one of the resins constituting the laminated film, the area ratio is 8 to 30 times. Is particularly preferably used.
- the stretching temperature is preferably from the glass transition temperature of the resin constituting the laminated film to the glass transition temperature + 120 ° C.
- the film thus biaxially stretched is preferably subsequently subjected to a heat treatment not less than the stretching temperature and not more than the melting point in the tenter in order to impart flatness and dimensional stability.
- a relaxation treatment in the longitudinal direction immediately before and / or immediately after entering the heat treatment zone. After being heat-treated in this way, it is gradually cooled down uniformly, then cooled to room temperature and wound up.
- a relaxation treatment is performed in the longitudinal direction.
- the layer constitution of the layer constitution film was determined by observation with an electron microscope for a sample cut out of a cross section using a microtome. That is, using a transmission electron microscope H-7100FA type (manufactured by Hitachi, Ltd.), the cross section of the film was magnified 40000 times at an acceleration voltage of 75 kV, a cross-sectional photograph was taken, and the layer configuration and the thickness of each layer were measured. . In this example, in order to obtain high contrast, staining was performed using known RuO4. A specific method for obtaining the laminated structure will be described.
- the obtained data with periodically changing brightness was differentiated, the maximum value and the minimum value of the differential curve were read, and the layer thickness was calculated with the interval between these adjacent ones as the layer thickness. This operation was performed for each photograph, and the layer thicknesses of all layers were calculated.
- Detection speed 600 nm / min for wavelengths from 240 to 850 nm Wavelength 850-1750nm is 750nm / min Sampling interval: 1.00 nm Slit: Wavelength 240-850nm is 2.00nm Wavelength of 850-1750nm is automatically controlled PbS sensitivity: 2 Spectral reflection curves were obtained by averaging these from the P wave and S wave of the respective spectral reflection curves at angles of 20 °, 40 °, and 60 °.
- Interference fringes A 500 mm long and 500 mm wide laminated film was placed on a black mount, illuminated with a three-wavelength fluorescent lamp, and judged by the following criteria by visual observation. ⁇ : Interference fringes are clearly visible ⁇ : Interference fringes are slightly visible ⁇ : Interference fringes are hardly visible
- Example 1 Synthesis of Resin B 56.1 parts by weight of dimethyl terephthalate, 24.8 parts by weight of dimethyl 1,4-cyclohexanedicarboxylate having a cis / trans ratio of 72/28, 47.2 parts by weight of ethylene glycol, spiroglycol 33.5 parts by weight, manganese acetate tetrahydrate 0.04 parts by weight, and antimony trioxide 0.02 parts by weight were each measured and charged into a transesterification reactor. The contents were dissolved at 150 ° C. and stirred. Subsequently, methanol was distilled while slowly raising the temperature of the reaction contents to 235 ° C. while stirring.
- the obtained resin B was a copolyester (PE / SPG ⁇ T / CHDC) having an intrinsic viscosity of 0.72, and was an amorphous resin.
- terephthalic acid was 70 mol% and cyclohexane dicarboxylic acid was 30 mol%.
- the diol component of the resin B was 75 mol% of ethylene glycol and 25 mol% of spiroglycol.
- Resin A was polymerized in the same manner as described above except that 100 parts by weight of dimethyl terephthalate and 64 parts by weight of ethylene glycol were used. Resin A was polyethylene terephthalate (PET) having an intrinsic viscosity of 0.65, and was a crystalline resin.
- PET polyethylene terephthalate
- Resin A and Resin B were prepared as two types of thermoplastic resins. Resins A and B were each melted at 280 ° C. in a separate twin-screw extruder with a vent, and then fed through a gear pump and a filter to a 901-layer feed having three members each having 301 slits. We merged at the block. In addition, both surface layer parts became resin A, resin A and resin B were laminated
- the obtained cast film was heated in a roll group set at 75 ° C., and then stretched 3.3 times in the longitudinal direction while rapidly heating from both sides of the film with a radiation heater between 100 mm in the stretch section length, and then temporarily Cooled down. Subsequently, both sides of this uniaxially stretched film were subjected to corona discharge treatment in air, the wetting tension of the base film was set to 55 mN / m, and the treated surface (polyester resin having a glass transition temperature of 18 ° C.) / (Glass transition) Polyester resin having a temperature of 82 ° C.) / Laminate-forming film coating liquid composed of silica particles having an average particle diameter of 100 nm was applied to form a transparent, easy-sliding, and easy-adhesion layer.
- This uniaxially stretched film was led to a tenter, preheated with hot air at 100 ° C., and stretched 3.5 times in the transverse direction at a temperature of 110 ° C.
- the stretched film was directly heat-treated in a tenter with hot air at 240 ° C., then subjected to a relaxation treatment of 7% in the width direction at the same temperature, and then gradually cooled to room temperature and wound up.
- the thickness of the obtained film was 100 ⁇ m.
- the design layer thickness of this film is as shown in FIG. 1, and the layer thickness of each layer was controlled by adjusting the slit gap. The obtained results are shown in Table 1.
- Example 2 The same procedure as in Example 1 was performed except that polyethylene naphthalate (PEN) having an intrinsic viscosity of 0.67 was used as the resin A. The thickness of the obtained film was 100 ⁇ m. The obtained results are shown in Table 1.
- Resin A of Example 2 was polymerized in the same manner as Resin A of Example 1 except that 100 parts of dimethyl 2,6-naphthalenedicarboxylate and 60 parts of ethylene glycol were used.
- Example 3 Example 1 except that polycarbonate resin (PC) Toughlon LC1700 manufactured by Idemitsu Kosan Co., Ltd. was used as resin A, and polymethyl methacrylate resin (PMMA) Sumipec LG2 manufactured by Sumitomo Chemical Co., Ltd. was used as resin B. .
- the thickness of the obtained film was 100 ⁇ m. The obtained results are shown in Table 1.
- Example 4 Example 3 was performed except that a 301-layer feed block having two separate members having 151 slits was used and the design layer thickness was changed as shown in FIG. The thickness of the obtained film was 100 ⁇ m. The obtained results are shown in Table 1.
- Example 5 The same procedure as in Example 4 was performed except that polyethylene naphthalate (PEN) having an intrinsic viscosity of 0.67 was used as the resin A, and polymethyl methacrylate resin (PMMA) Sumipec LG2 manufactured by Sumitomo Chemical Co., Ltd. was used as the resin B. .
- the thickness of the obtained film was 100 ⁇ m. The obtained results are shown in Table 1.
- a black crosslinkable ink layer was formed by screen printing on one side (layer number 1 side) of the laminated film obtained in Comparative Example 1, and then a binder layer was formed.
- the printing conditions are as follows.
- the thickness of the crosslinkable ink layer was 5 ⁇ m ⁇ Black crosslinkable ink layer>
- Coloring pigment Mitsubishi Chemical Corporation carbon black MA100 8 parts by weight
- Polyester polyol resin Toyobo Co., Ltd.
- Solvent Cyclohexane 35 parts by weight
- Crosslinking agent Isocyanate-based crosslinking agent Coronate made by Nippon Polyurethane Industry Co., Ltd.
- Example 9 A black crosslinkable ink layer was formed on one side (layer number 1 side) of the laminated film obtained in Example 1 by screen printing, and then a binder layer was formed.
- the printing conditions are as follows.
- the thickness of the crosslinkable ink layer was 5 ⁇ m ⁇ Black crosslinkable ink layer>
- Coloring pigment Mitsubishi Chemical Corporation carbon black MA100 8 parts by weight
- Polyester polyol resin Toyobo Co., Ltd.
- Byron 200 25 parts by weight
- Solvent Cyclohexane 35 parts by weight
- Crosslinking agent Isocyanate-based crosslinking agent Coronate made by Nippon Polyurethane Industry Co., Ltd.
- a black crosslinkable ink layer was formed by screen printing on one side (layer number 1 side) of the laminated film obtained in Comparative Example 1, and then a binder layer was formed.
- the printing conditions are as follows.
- the thickness of the crosslinkable ink layer was 5 ⁇ m.
- ⁇ Black crosslinkable ink layer> Colored pigment: Mitsubishi Chemical Corporation carbon black MA100 8 parts by weight Polyester polyol resin: Toyobo Co., Ltd. Byron 200 25 parts by weight Solvent: Cyclohexane 35 parts by weight
- Crosslinking agent Isocyanate-based crosslinking agent Coronate made by Nippon Polyurethane Industry Co., Ltd.
- Example 10 A black crosslinkable ink layer was formed on one side (layer number 1 side) of the laminated film obtained in Example 1 by screen printing, and then a binder layer was formed.
- the printing conditions are as follows.
- the thickness of the crosslinkable ink layer was 20 ⁇ m.
- Byron 200 25 parts by weight
- Solvent Cyclohexane 35 parts by weight
- Crosslinking agent Isocyanate-based crosslinking agent Coronate made by Nippon Polyurethane Industry Co., Ltd.
- the application of the present invention is not particularly limited, it can be particularly suitably used for mirrors, metallic decoration materials, optical members for displays, and the like.
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Abstract
Description
また、層Laと層Lcの間には少なくとも60層以上の樹脂Aからなる層を含むことが好ましい。より好ましくは90層以上である。層数が30層より少ないと、反射率が低くなりすぎる。上限としては特に限定するものではないが1000層以上になると、フィルム厚みが厚くなりすぎる場合がある。また、層Laと層Lbの間、および層Lbと層Lcの間には、少なくとも50層以上の樹脂Aからなる層を含むことがさらに好ましい。このような場合、より色づきが少なく、干渉むらも見えにくくなる。
本発明の成形体としては、上記積層フィルムを含んでなければならない。本発明の積層フィルム以外に、ハードコート層、エンボス層、耐候層(UVカット層)、着色層、接着層、基材樹脂層などのいずれかを含んでなることも好ましい。このよう成形体は、オールポリマーから構成することが可能であり、金属や重金属などを含まないため、環境負荷が小さく、リサイクル性にも優れ、電波透過性にも優れたものとなる。本発明の成形体では、特に着色層を有することが好ましい。本発明の積層フィルムでは、可視光線の一部が透過する場合があるため、着色層を設けることにより、成形体の色目を調整することが可能となる。また、真空成形、真空圧空成形、プラグアシスト真空圧空成形、インモールド成形、インサート成形、冷間成形、プレス成形、絞り成形などの各種成型法が適用できるため、低コストで成形体を得ることが可能である。このような成形体は、携帯電話、電話、パソコン、オーディオ機器、家電機器、無線通信機器、レイドーム、自動車内外装部品、建築材料、ゲーム機、アミューズメント機器、包装容器などに好ましく用いることができる。特に、本発明の成形体は、携帯電話、電話、パソコン、オーディオ機器、家電機器、無線通信機器、レイドームなどの車載部品、ゲーム機などの無線で情報通信を行う機能を有する機器(無線情報通信機器)の装飾部品として用いることが好ましい。本発明の成形体は、金属調の外観を有しながら、電波透過性に優れるので、従来の金属調装飾材料のように電磁波障害を引き起こさないものである。このため、本発明の成形体を情報通信機器の装飾部品として用いると、機器の小型化や薄型化が可能となったり、情報通信機器内部の回路設計の自由度が増すものである。
本発明のICカード・ICラベルは、上記回路搭載シートを含んでなければならない。本発明の回路搭載シート以外に、ハードコート層、エンボス層、耐候層(UVカット層)、着色層、接着層などのいずれかを含んでなることも好ましい。このようなICカード・ラベルは、回路の基材がポリマーのみから構成され、金属や重金属などを含まないため、環境負荷が小さく、リサイクル性にも優れ、電磁波障害を起こさないものである。
2×(na・da+nb・db)=λ 式1
na:樹脂Aからなる層の面内平均屈折率
nb:樹脂Bからなる層の面内平均屈折率
da:樹脂Aからなる層の層厚み(nm)
db:樹脂Bからなる層の層厚み(nm)
λ:主反射波長(1次反射波長)
さて、このようにして所望の層構成に形成した溶融積層体は、次にダイにて目的の形状に成形された後、吐出される。そして、ダイから吐出された多層に積層されたシートは、キャスティングドラム等の冷却体上に押し出され、冷却固化され、キャスティングフィルムが得られる。この際、ワイヤー状、テープ状、針状あるいはナイフ状等の電極を用いて、静電気力によりキャスティングドラム等の冷却体に密着させ急冷固化させることが好ましい。また、スリット状、スポット状、面状の装置からエアーを吹き出してキャスティングドラム等の冷却体に密着させ急冷固化させたり、ニップロールにて冷却体に密着させ急冷固化させる方法も好ましい。
(物性値の評価法)
(1)層構成
フィルムの層構成は、ミクロトームを用いて断面を切り出したサンプルについて、電子顕微鏡観察により求めた。すなわち、透過型電子顕微鏡H-7100FA型((株)日立製作所製)を用い、加速電圧75kVでフィルムの断面を40000倍に拡大観察し、断面写真を撮影、層構成および、各層厚みを測定した。なお、本実施例では、コントラストを高く得るために公知のRuO4を使用して染色した。
積層構造の具体的な求め方を、説明する。約4万倍のTEM写真画像を、CanonScanD123Uを用いて画像サイズ720dpiで取り込んだ。画像をJPEG形式で保存し、次いで画像処理ソフトImage-Pro Plus ver.4(販売元 プラネトロン(株))を用いて、このJPGファイルを開き、画像解析を行った。画像解析処理は、垂直シックプロファイルモードで、厚み方向位置と幅方向の2本のライン間で挟まれた領域の平均明るさとの関係を、数値データとして読み取った。表計算ソフト(Excel2000)を用いて、位置(nm)と明るさのデータに対してサンプリングステップ6(間引き6)、3点移動平均の数値処理を施した。さらに、この得られた周期的に明るさが変化するデータを微分し、その微分曲線の極大値と極小値を読み込み、隣り合うこれらの間隔を1層の層厚みとして層厚みを算出した。この操作を写真毎に行い、全ての層の層厚みを算出した。
オルトクロロフェノール中、25℃で測定した溶液粘度から、算出した。また、溶液粘度はオストワルド粘度計を用いて測定した。単位は[dl/g]で示した。なお、n数は3とし、その平均値を採用した。
JIS K5600(2002年)に従って試験を行った。なお、フィルムを硬い素地とみなし、2mm間隔で25個の格子状パターンを切り込んだ。また、約75mmの長さに切ったテープを格子の部分に接着し、テープを60°に近い角度で0.5~1.0秒の時間で引き剥がした。ここで、テープにはセキスイ製セロテープ(登録商標)No.252(幅18mm)を用いた。評価結果は、格子1つ分が完全に剥離した格子の数で表した。
示差熱量分析(DSC)を用い、JIS-K-7122(1987年)に従って測定・算出した。なお、まず1st Runで、25℃から290℃まで20℃/min.で昇温した後、290℃で5分間ホールドした後、25℃まで急冷した。またつづく2nd Runでは、25℃から290℃まで20℃/min.で昇温した。樹脂のガラス転移温度は2nd Runにおけるガラス転移温度を用いた。
装置:セイコー電子工業(株)製”ロボットDSC-RDC220”
データ解析”ディスクセッションSSC/5200”
サンプル質量:5mg。
コニカミノルタセンシング株式会社製 分光測色計CM-3600dを使用して、製品幅1mのフィルムについて、幅方向に10cmの間隔で各点における明度L*と色度(a*、b*)を測定した。得られた色度から彩度をもとめ、彩度の最大値と最小値の差を彩度の範囲とした。
なお、測定の手順としては、分光測色計付属のゼロ構成ボックスで反射率のゼロ構成を行い、続いて付属の白色校正板を用いて100%校正を行った後、以下の条件でフィルムの明度L*および色度(a*、b*)を計測した。
モード:反射、SCI/SCE同時測定
測定径:8mm
サンプル:非測定面側に黒インキを塗布
次に色度(a*、b*)から彩度C*を求めた。彩度の定義は以下の通りである。彩度が0に近いほど、色づきのないものとなる。
C*=((a*)2+(b*)2)1/2
彩度の計算に用いた色度(a*、b*)はSCIの値を用いた。
株式会社日立ハイテクノロジーズ製分光光度計U4100に、角度可変絶対反射率付属装置(20~60°)を用いて、フィルム製品幅1mの幅方向中央位置の20°、30°、40°、50°、60°のそれぞれの絶対反射率を測定した。なお、測定条件は以下の通りとした。
検出速度:波長240~850nmは600nm/min
波長850~1750nmは750nm/min
サンプリング間隔:1.00nm
スリット:波長240~850nmは2.00nm
波長850~1750nmは自動制御
PbS感度:2
角度20°、40°、60°のそれぞれの分光反射曲線のP波とS波からこれらを平均化した分光反射曲線をもとめた。次に、各角度の平均分光反射曲線から、光源をD65とし、10°視野のL*、a*、b*を算出し、以下の式から角度依存性色差ΔEabを求めた。
ΔEab(40°←20°)=((a*(40°)-a*(20°))2+(b*(40°)-b*(20°))2)1/2
ΔEab(60°←40°)=((a*(60°)-a*(40°))2+(b*(60°)-b*(40°))2)1/2
ΔEab=ΔEab(40°←20°)+ΔEab(60°←40°)
ここで、a*(n) : 角度n°におけるa*
b*(n) : 角度n°におけるb*
(7)電磁波シールド性
ASTM D4935に準拠して、キーコム株式会社の同軸管タイプ シールド効果測定システムにて、45M~3GHzの電磁波透過性を測定した。実施例・比較例については、2.4GHzの損失を記載した。
(8)干渉縞
黒色台紙の上に縦500mm、横500mmサイズの積層フィルムを置いて、3波長蛍光灯で照らし、目視観察により以下の基準で判断した。
×:干渉縞がはっきりと見える
△:干渉縞がわずかに見える
○:干渉縞がほとんど見えない。
1.樹脂Bの合成
テレフタル酸ジメチルを56.1重量部、シス/トランス比率が72/28である1,4-シクロヘキサンジカルボン酸ジメチルを24.8重量部、エチレングリコールを47.2重量部、スピログリコールを33.5重量部、酢酸マンガン四水塩を0.04重量部、三酸化アンチモンを0.02重量部それぞれ計量し、エステル交換反応装置に仕込んだ。内容物を150℃で溶解させて撹拌した。次いで、撹拌しながら反応内容物の温度を235℃までゆっくり昇温しながらメタノールを留出させた。所定量のメタノールが留出したのち、トリメチルリン酸を0.02重量部含んだエチレングリコール溶液を添加した。トリメチルリン酸を添加した後10分間撹拌してエステル交換反応を終了した。その後エステル交換反応物を重合装置に移行した。
テレフタル酸ジメチルを100重量部、エチレングリコールを64重量部用いる以外は前記と同様にして樹脂Aを重合した。樹脂Aは固有粘度0.65のポリエチレンテレフタレート(PET)であり、結晶性樹脂であった。
樹脂Aとして、固有粘度が0.67のポリエチレンナフタレート(PEN)を用いた以外は、実施例1と同様とした。得られたフィルムの厚みは、100μmであった。得られた結果を表1に示す。なお、実施例2の樹脂Aは、2,6-ナフタレンジカルボン酸ジメチル100部とエチレングリコール60部を用いる以外は、実施例1の樹脂Aと同様に重合した。
樹脂Aとして出光興産株式会社製のポリカーボネート樹脂(PC) タフロンLC1700を用い、樹脂Bとして住友化学株式会社製のポリメチルメタクリレート樹脂(PMMA) スミペックLG2を用いた以外は、実施例1と同様とした。得られたフィルムの厚みは、100μmであった。得られた結果を表1に示す。
151個のスリットを有する部材を別個に2個有する301層のフィードブロックを用い、設計層厚みを図2のように変更した以外は、実施例2と同様とした。得られたフィルムの厚みは、100μmであった。得られた結果を表1に示す。
樹脂Aとして固有粘度が0.67のポリエチレンナフタレート(PEN)を用い、樹脂Bとして住友化学株式会社製のポリメチルメタクリレート樹脂(PMMA) スミペックLG2を用いた以外は、実施例4と同様とした。得られたフィルムの厚みは、100μmであった。得られた結果を表1に示す。
設計層厚みが図3~図5になるようにフィードブロックのスリット形状等を変更し、厚みを調整した以外は、実施例1と同様とした。得られた結果を表1に示す。
設計層厚みが図6~図7になるようにフィードブロックのスリット形状等を変更し、厚みを調整した以外は、実施例1と同様とした。得られた結果を表2に示す。
比較例1にて得られた積層フィルムの片面(層番号1番側)に、スクリーン印刷にて黒色の架橋性インキ層を形成した後、バインダー層を形成した。印刷条件は以下の通り。架橋性インキ層の厚みは5μmであった
<黒色の架橋性インキ層>
着色顔料:三菱化学(株)製 カーボンブラック MA100 8重量部
ポリエステルポリオール樹脂:東洋紡(株)製 バイロン200 25重量部
溶剤:シクロヘキサン 35重量部
架橋剤:イソシアネート系架橋剤 日本ポリウレタン工業(株)製 コロネート2096 10重量部
スクリーンメッシュ:T-225
乾燥:80℃×10分(ボックス乾燥)
塗布回数:1回
<バインダー>
バインダー:帝国インキ製造株式会社製 IMB-003
スクリーンメッシュ:T-225
乾燥:90℃×60分(ボックス乾燥)
次に、この架橋性インキ層およびバインダー層を形成したフィルムを、所定の寸法にカットし、金型にセットして、以下の条件でインサート成形した。得られた成形体は、ゲート部にWashOutと呼ばれる変色が見られた。変色部について、フィルムの断面観察をしたところ、図8のような層の折れ曲がり変形が認められた。また、高さ0.5mm程度のそりが発生していた。
型締圧力:60ton
金型温度:60℃
成形樹脂:住友ダウ株式会社製 PC/ABSアロイ SDポリカ IM6011
成形樹脂温度:260℃
射出速度:50mm/s
成形品寸法(L×W×H):60×60×3 mm
ゲート:φ2mmピンゲート。
実施例1にて得られた積層フィルムの片面(層番号1番側)に、スクリーン印刷にて黒色の架橋性インキ層を形成した後、バインダー層を形成した。印刷条件は以下の通り。架橋性インキ層の厚みは5μmであった
<黒色の架橋性インキ層>
着色顔料:三菱化学(株)製 カーボンブラック MA100 8重量部
ポリエステルポリオール樹脂:東洋紡(株)製 バイロン200 25重量部
溶剤:シクロヘキサン 35重量部
架橋剤:イソシアネート系架橋剤 日本ポリウレタン工業(株)製 コロネート2096 10重量部
スクリーンメッシュ:T-225
乾燥:80℃×10分(ボックス乾燥)
塗布回数:1回
<バインダー>
バインダー:帝国インキ製造株式会社製 IMB-003
スクリーンメッシュ:T-225
乾燥:90℃×60分(ボックス乾燥)
次に、この架橋性インキ層およびバインダー層を形成したフィルムを、所定の寸法にカットし、金型にセットして、以下の条件でインサート成形した。得られた成形体には、層の折れ曲がり変形は観察されず、ゲート部にWashOutと呼ばれる変色もなく、外観に優れるものであった。また、そりはほとんどなかった。
型締圧力:60ton
金型温度:60℃
成形樹脂:住友ダウ株式会社製 PC/ABSアロイ SDポリカ IM6011
成形樹脂温度:260℃
射出速度:50mm/s
成形品寸法(L×W×H):60×60×3 mm
ゲート:φ2mmピンゲート。
比較例1にて得られた積層フィルムの片面(層番号1番側)に、スクリーン印刷にて黒色の架橋性インキ層を形成した後、バインダー層を形成した。印刷条件は以下の通り。架橋性インキ層の厚みは5μmであった。
<黒色の架橋性インキ層>
着色顔料:三菱化学(株)製 カーボンブラック MA100 8重量部
ポリエステルポリオール樹脂:東洋紡(株)製 バイロン200 25重量部
溶剤:シクロヘキサン 35重量部
架橋剤:イソシアネート系架橋剤 日本ポリウレタン工業(株)製 コロネート2096 10重量部
スクリーンメッシュ:T-225
乾燥:80℃×10分(ボックス乾燥)
塗布回数:1回
<バインダー>
バインダー:帝国インキ製造株式会社製 IMB-003
スクリーンメッシュ:T-225
乾燥:90℃×60分(ボックス乾燥)
次に、この架橋性インキ層およびバインダー層を形成したフィルムを、所定の寸法にカットし、金型にセットして、以下の条件でインサート成形した。得られた成形体には、ゲート部付近でフィルムの変色が観察されるとともに、インキ流れも観察された。インキ流れが見られた部位のフィルム断面を観察してみると、層数が減少しフィルム厚みが薄くなっているとともに、層の折れ曲がり変形も認められた。また、高さ0.6mm程度のそりが発生していた。
型締圧力:60ton
金型温度:80℃
成形樹脂:帝人化成株式会社製 ポリカーボネート L1225L
成形樹脂温度:295℃
射出速度:50mm/s
成形品寸法(L×W×H):60×60×3 mm
ゲート:φ2mmピンゲート。
実施例1にて得られた積層フィルムの片面(層番号1番側)に、スクリーン印刷にて黒色の架橋性インキ層を形成した後、バインダー層を形成した。印刷条件は以下の通り。架橋性インキ層の厚みは20μmであった。
<黒色の架橋性インキ層>
着色顔料:三菱化学(株)製 カーボンブラック MA100 8重量部
ポリエステルポリオール樹脂:東洋紡(株)製 バイロン200 25重量部
溶剤:シクロヘキサン 35重量部
架橋剤:イソシアネート系架橋剤 日本ポリウレタン工業(株)製 コロネート2096 10重量部
スクリーンメッシュ:T-225
乾燥:80℃×10分(ボックス乾燥)
塗布回数:4回
<バインダー>
バインダー:帝国インキ製造株式会社製 IMB-003
スクリーンメッシュ:T-225
乾燥:90℃×60分(ボックス乾燥)
次に、この架橋性インキ層およびバインダー層を形成したフィルムを、所定の寸法にカットし、金型にセットして、以下の条件でインサート成形した。得られた成形体には、変色やインキ流れは認められず、外観に優れたものであった。また、そりはほとんどなかった。
型締圧力:60ton
金型温度:80℃
成形樹脂:帝人化成株式会社製 ポリカーボネート L1225L
成形樹脂温度:295℃
射出速度:50mm/s
成形品寸法(L×W×H):60×60×3 mm
ゲート:φ2mmピンゲート
Claims (10)
- すくなくとも樹脂Aからなる層と樹脂Bからなる層を含んでなる積層数が200以上の積層フィルムであって、層厚みが10nm以上1000nm以下の樹脂Aからなる層を層群Lとし、この層群Lは層La、層Lb、層Lcを有しており、一方の表面から他方の表面にむけて層La、層Lb、層Lcの順に配置されており、層Laと層Lcの層厚みは等しく、層Laと層Lcの間には少なくとも30層以上樹脂Aからなる層を含み、かつ層Laの層厚みは層Lbの層厚みの1.4倍以上もしくは0.7倍以下であることを特徴とする積層フィルム。
- 層群Lは層La、層Lb、層Lc、層Ldを有しており、一方の表面から他方の表面にむけて層La、層Lb、層Lc、層Ldの順に配置されており、層Lbと層Ldの層厚みは等しく、かつ層Lbと層Ldの間には少なくとも30層以上樹脂Aからなる層を含んでなることを特徴とする請求項1に記載の積層フィルム。
- 層Laと層Lbの間に存在する層の厚みが、層Laから層Lbに向かうにつれ徐々に厚くなる、もしくは徐々に薄くなることを特徴とする請求項1または2に記載の積層フィルム。
- 樹脂Bからなる層Ma、層Mb、層Mcを有しており、層Laと層Maが隣接し、層Lbと層Mbが隣接し、層Lcと層Mcが隣接しており、層Laの層厚みは層Lbの層厚みの1.4倍以上かつ層Maの層厚みは層Mbの層厚みの1.4倍以上、または層Laの層厚みは層Lbの層厚みの0.7倍以下かつ層Maの層厚みは層Mbの層厚みの0.7倍以下であることを特徴とする請求項1~3のいずれかに積層フィルム。
- 層Laと層Lcの間に存在する層を構成する樹脂は、樹脂Aまたは樹脂Bであることを特徴とする請求項1~4のいずれかに記載の積層フィルム。
- 層群L中の一方の表面にもっとも近い層と、他方の表面にもっとも近い層の間に含まれるすべての層が、熱可塑性樹脂からなることを特徴とする請求項1~5のいずれかに記載の積層フィルム。
- 反射率が30%以上である反射帯域の帯域幅が300nm以上であることを特徴とする請求項1~6のいずれかに記載の積層フィルム。
- 請求項1~7のいずれかに記載の積層フィルムの少なくとも片面に、厚み15μm以上80μm以下の架橋性インキ層を有することを特徴とする積層フィルム
- 請求項1~8のいずれかに記載の積層フィルムを含んでなることを特徴とする成形体。
- 請求項1~8のいずれかに記載の積層フィルムを含んでなることを特徴とする反射体。
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JP2009509199A JP5640380B2 (ja) | 2008-02-01 | 2009-01-22 | 積層フィルムおよび成形体、反射体 |
EP09705718.6A EP2239136B1 (en) | 2008-02-01 | 2009-01-22 | Laminated film and molding and reflector |
US12/865,277 US8313827B2 (en) | 2008-02-01 | 2009-01-22 | Laminated film and molding and reflector |
KR1020107017098A KR101492306B1 (ko) | 2008-02-01 | 2009-01-22 | 적층 필름 및 성형체, 반사체 |
CN2009801037354A CN101932444B (zh) | 2008-02-01 | 2009-01-22 | 层叠膜、成形体以及反射体 |
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0341401A (ja) | 1989-06-20 | 1991-02-21 | Dow Chem Co:The | 反射ポリマー体 |
JPH04295804A (ja) | 1990-12-18 | 1992-10-20 | Dow Chem Co:The | 反射性ポリマー物体 |
JP2004160851A (ja) * | 2002-11-13 | 2004-06-10 | Teikoku Printing Inks Mfg Co Ltd | インサート成形品、インサート成形品の製造方法及びインキ |
WO2005037544A1 (ja) * | 2003-10-14 | 2005-04-28 | Toray Industries, Inc. | 積層フィルム |
JP2005313586A (ja) * | 2004-03-31 | 2005-11-10 | Toray Ind Inc | 積層フィルム |
WO2007020861A1 (ja) | 2005-08-18 | 2007-02-22 | Toray Industries, Inc. | 積層フィルムおよび成形体 |
JP2007176154A (ja) * | 2005-11-29 | 2007-07-12 | Toray Ind Inc | 積層フィルム |
JP2007271896A (ja) * | 2006-03-31 | 2007-10-18 | Toray Ind Inc | 着色フィルム |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI416158B (zh) * | 2006-03-31 | 2013-11-21 | Dainippon Printing Co Ltd | Optical laminated body and optical laminate |
-
2009
- 2009-01-22 JP JP2009509199A patent/JP5640380B2/ja active Active
- 2009-01-22 KR KR1020107017098A patent/KR101492306B1/ko active IP Right Grant
- 2009-01-22 CN CN2009801037354A patent/CN101932444B/zh active Active
- 2009-01-22 EP EP09705718.6A patent/EP2239136B1/en active Active
- 2009-01-22 WO PCT/JP2009/050917 patent/WO2009096298A1/ja active Application Filing
- 2009-01-22 US US12/865,277 patent/US8313827B2/en active Active
- 2009-01-23 TW TW098102833A patent/TWI464056B/zh active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0341401A (ja) | 1989-06-20 | 1991-02-21 | Dow Chem Co:The | 反射ポリマー体 |
JPH04295804A (ja) | 1990-12-18 | 1992-10-20 | Dow Chem Co:The | 反射性ポリマー物体 |
JP2004160851A (ja) * | 2002-11-13 | 2004-06-10 | Teikoku Printing Inks Mfg Co Ltd | インサート成形品、インサート成形品の製造方法及びインキ |
WO2005037544A1 (ja) * | 2003-10-14 | 2005-04-28 | Toray Industries, Inc. | 積層フィルム |
JP2005313586A (ja) * | 2004-03-31 | 2005-11-10 | Toray Ind Inc | 積層フィルム |
WO2007020861A1 (ja) | 2005-08-18 | 2007-02-22 | Toray Industries, Inc. | 積層フィルムおよび成形体 |
JP2007176154A (ja) * | 2005-11-29 | 2007-07-12 | Toray Ind Inc | 積層フィルム |
JP2007271896A (ja) * | 2006-03-31 | 2007-10-18 | Toray Ind Inc | 着色フィルム |
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---|---|---|---|---|
JP5696478B2 (ja) * | 2009-09-25 | 2015-04-08 | 東レ株式会社 | 成形用フィルム |
JPWO2011037018A1 (ja) * | 2009-09-25 | 2013-02-21 | 東レ株式会社 | 成形用フィルム |
WO2011037018A1 (ja) * | 2009-09-25 | 2011-03-31 | 東レ株式会社 | 成形用フィルム |
JP2013506883A (ja) * | 2009-10-09 | 2013-02-28 | エスケーシー カンパニー リミテッド | 多層光学フィルム及びその製造方法 |
KR101775077B1 (ko) * | 2009-10-09 | 2017-09-06 | 에스케이씨 주식회사 | 다층 광학 필름 및 이의 제조방법 |
JP2013526730A (ja) * | 2010-05-21 | 2013-06-24 | スリーエム イノベイティブ プロパティズ カンパニー | 減色の部分的に反射する多層光学フィルム |
JP2017161909A (ja) * | 2010-05-21 | 2017-09-14 | スリーエム イノベイティブ プロパティズ カンパニー | 減色の部分的に反射する多層光学フィルム |
EP2572218B1 (en) * | 2010-05-21 | 2019-10-09 | 3M Innovative Properties Company | Partially reflecting multilayer optical films with reduced color |
JP2014233950A (ja) * | 2013-06-05 | 2014-12-15 | 東レ株式会社 | 二軸配向ポリエステルフィルム |
JP2022534029A (ja) * | 2019-05-23 | 2022-07-27 | スリーエム イノベイティブ プロパティズ カンパニー | 多層光学フィルム |
JP7516426B2 (ja) | 2019-05-23 | 2024-07-16 | スリーエム イノベイティブ プロパティズ カンパニー | 多層光学フィルム |
WO2020264169A1 (en) * | 2019-06-25 | 2020-12-30 | Dow Global Technologies Llc | Methods of making uv reflective particles |
US12070884B2 (en) | 2019-06-25 | 2024-08-27 | Dow Global Technologies Llc | Methods of making UV reflective particles |
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Also Published As
Publication number | Publication date |
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EP2239136A1 (en) | 2010-10-13 |
CN101932444A (zh) | 2010-12-29 |
US8313827B2 (en) | 2012-11-20 |
JP5640380B2 (ja) | 2014-12-17 |
KR20100106556A (ko) | 2010-10-01 |
EP2239136B1 (en) | 2019-02-27 |
KR101492306B1 (ko) | 2015-02-11 |
TWI464056B (zh) | 2014-12-11 |
US20100330350A1 (en) | 2010-12-30 |
CN101932444B (zh) | 2013-12-25 |
JPWO2009096298A1 (ja) | 2011-05-26 |
TW200940331A (en) | 2009-10-01 |
EP2239136A4 (en) | 2014-08-13 |
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