WO2011058901A1 - メッキ樹脂成形体、メッキ樹脂成形体の製造方法、及びメッキ樹脂成形体及び成形回路基板 - Google Patents
メッキ樹脂成形体、メッキ樹脂成形体の製造方法、及びメッキ樹脂成形体及び成形回路基板 Download PDFInfo
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- WO2011058901A1 WO2011058901A1 PCT/JP2010/069439 JP2010069439W WO2011058901A1 WO 2011058901 A1 WO2011058901 A1 WO 2011058901A1 JP 2010069439 W JP2010069439 W JP 2010069439W WO 2011058901 A1 WO2011058901 A1 WO 2011058901A1
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- molded body
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- plating film
- mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C2045/0079—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping applying a coating or covering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0079—Liquid crystals
Definitions
- the present invention relates to a plated resin molded article having a plating film on the surface of a molded article formed by molding a liquid crystalline resin composition, a method for producing the plated resin molded article, and a molded circuit board.
- a group of plastics called engineering plastics has high strength and is being replaced by metal parts.
- a group of plastics called liquid crystalline resins melts while maintaining a crystal structure.
- High strength based on this crystal structure is one of the characteristics of the liquid crystalline resin.
- the liquid crystalline resin has a small volume change between melting and solidification because the crystal structure does not change greatly upon solidification.
- the liquid crystalline resin has an advantage that the molding shrinkage is small and the dimensional accuracy of the molded body is excellent.
- the liquid crystalline resin exhibits a low linear expansion coefficient comparable to that of general metals, and has heat-resistant characteristics such as no abnormality even when immersed in a 260 ° C. solder bath for 10 seconds.
- the liquid crystalline resin is applied to a plated resin molded body such as a substrate provided with plating by taking advantage of this characteristic.
- the surface of the molded body formed by molding the liquid crystalline resin composition is chemically extremely inactive, and the surface layer is peeled off due to strong orientation, and fluffing tends to occur.
- secondary processing by general plating such as chemical plating, electroplating, sputtering, or ion plating is performed on the resin molded body, the boundary surface between the surface layer and the skin layer or the boundary surface between the surface layer and the plating layer It will peel off and will not become a plated resin molding.
- Patent Document 1 proposes alkali etching of a molded body formed by molding a specific liquid crystalline resin composition containing a specific filler such as phosphate.
- Patent Document 2 proposes that a molded body formed by molding a specific liquid crystalline resin composition is treated with an acidic solution and an alkaline solution, and plating on the liquid crystalline resin molded body by such a technique is proposed. Became possible.
- Patent Documents 1 and 2 do not always have sufficient plating adhesion for high performance of required functions in the application of liquid crystal resins in various fields in recent years. Absent.
- Patent Document 3 In order to solve the above-mentioned problem of plating adhesion, it is known that it is extremely effective to add silica to a liquid crystalline resin, treat the molded body with an alkaline aqueous solution, and then treat with a fluoride aqueous solution.
- Patent Documents 1 to 3 limit the liquid crystal resin compositions that can be used. Since the liquid crystalline resin composition can be used for various applications, liquid crystalline resin compositions having innumerable various characteristics have been proposed. For this reason, the technique which can be plated also with respect to the molded object formed by shape
- the present invention has been made in order to solve the above-mentioned problems, and the object thereof is a technique for plating a molded body formed by molding a liquid crystalline resin composition without performing an etching treatment.
- the object is to provide a technique in which the target liquid crystalline resin composition is not limited to a specific one.
- the present inventors have intensively studied to solve the above problems. As a result, the present inventors first made a molded body obtained by molding the liquid crystalline resin composition by injection molding under specific molding conditions using a mold having a heat insulating layer formed on the inner surface of the mold. It has been found that the resulting molded body has no boundary between the surface layer and the skin layer.
- the boundary between the surface layer and the skin layer which has been a problem in the production of a plated resin molded body using a conventional liquid crystalline resin. There is no problem of peeling on the surface. However, since this molded body has a very smooth surface, there arises a new problem of peeling at the boundary surface between the plating film and the molded body surface. Therefore, the present inventors have found that if the plating film material particles collide with and adhere to the surface of the molded body, the plating film can be formed with sufficient adhesion on the surface of the molded body.
- the invention has been completed. More specifically, the present invention provides the following.
- the plated resin molded body of the present invention uses a molded body in which the surface layer is not formed on the skin layer of the molded body, there is no problem of peeling at the interface between the skin layer and the surface layer.
- a plated resin molded article using a liquid crystalline resin can be produced without performing an etching treatment step.
- a plated resin molded body can be manufactured easily and with high productivity. And since it becomes unnecessary to remove a filler etc. by an etching process process, the fall of the physical property by extracting a filler can be suppressed.
- (A) is a figure which shows sectional drawing of the molded object used by this invention.
- (B) is a figure which shows sectional drawing of the plating resin molding of this invention.
- (C) is a figure which shows the plating resin molding of this invention different from FIG.1 (b).
- (A) is a figure which shows the molded object formed by shape
- (B) is a figure which shows the plating resin molded object which formed the plating film in the molded object shown to Fig.2 (a).
- (C) is a figure which shows the state which has peeled between the surface layer and skin layer of the plating resin molding which are shown in FIG.2 (b).
- (A) is a figure which shows the molded object produced at the said molded object manufacturing process.
- (B) is a figure which shows the plating resin molding which formed the plating film by chemical plating directly with respect to the molding shown to Fig.3 (a).
- (C) is a figure which shows the state from which the plating film of the plating resin molding was peeled off.
- the method for producing a plated resin molded body of the present invention includes a molded body manufacturing process for manufacturing a molded body and a plated film forming process for forming a plated film on the surface of the molded body.
- a molded object manufacturing process is a process of obtaining a molded object by shape
- the present invention is characterized in that it can be applied without limiting the liquid crystalline resin and the liquid crystalline resin composition.
- the liquid crystalline resin will be described.
- the liquid crystalline resin refers to a melt processable polymer having a property capable of forming an optically anisotropic molten phase.
- the property of the anisotropic molten phase can be confirmed by a conventional polarization inspection method using an orthogonal polarizer. More specifically, the anisotropic molten phase can be confirmed by using a Leitz polarizing microscope and observing a molten sample placed on a Leitz hot stage under a nitrogen atmosphere at a magnification of 40 times.
- the liquid crystalline resin applicable to the present invention is inspected between crossed polarizers, the polarized light is normally transmitted even in a molten stationary state, and optically anisotropic.
- the liquid crystalline resin as described above is not particularly limited, but in general, aromatic polyester or aromatic polyester amide is preferably used. In the present invention, these liquid crystalline resins can also be preferably used.
- a polyester partially containing an aromatic polyester or an aromatic polyester amide in the same molecular chain is also in that range. They preferably have a logarithmic viscosity (IV) of at least about 2.0 dl / g, more preferably 2.0-10.0 dl / g when dissolved in pentafluorophenol at 60 ° C. at a concentration of 0.1% by weight. .) Are used.
- the aromatic polyester or the aromatic polyester amide is particularly preferably an aromatic having at least one compound selected from the group of aromatic hydroxycarboxylic acids, aromatic hydroxyamines, and aromatic diamines as a constituent component. Polyester and aromatic polyester amide.
- a polyester amide comprising one or more of aromatic dicarboxylic acid, alicyclic dicarboxylic acid and derivatives thereof; (4) mainly (a) one or more of aromatic hydroxycarboxylic acids and derivatives thereof; (b) one or more of aromatic hydroxyamines, aromatic diamines and derivatives thereof; and (c). One or more of aromatic dicarboxylic acid, alicyclic dicarboxylic acid and derivatives thereof, and (d) at least one or more of aromatic diol, alicyclic diol, aliphatic diol and derivatives thereof, and And polyester amides composed of Furthermore, you may use a molecular weight modifier together with said structural component as needed.
- Specific examples of the specific compound constituting the liquid crystalline resin applicable to the present invention include aromatic hydroxycarboxylic acids such as p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, 2,6-dihydroxynaphthalene, 1,4-dihydroxynaphthalene, 4,4′-dihydroxybiphenyl, hydroquinone, resorcin, aromatic diols such as compounds represented by the following general formula (A) and the following general formula (B); terephthalic acid, isophthalic acid, 4 , 4′-diphenyldicarboxylic acid, 2,6-naphthalenedicarboxylic acid and aromatic dicarboxylic acids such as compounds represented by the following general formula (C); aromatic amines such as p-aminophenol and p-phenylenediamine Can be mentioned.
- aromatic hydroxycarboxylic acids such as p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, 2,6-di
- X a group selected from alkylene (C1 to C4), alkylidene, —O—, —SO—, —SO 2 —, —S—, and —CO—
- various fibrous, granular, and plate-like inorganic fillers can be blended in the liquid crystalline resin composition used in the present invention depending on the purpose of use.
- a liquid crystalline resin composition containing a fibrous filler when used, peeling is likely to occur at the interface between the surface layer and the skin layer.
- the molded body produced in this step does not cause the above problem even when a resin composition containing a fibrous filler, which has been a particularly problematic problem, is used as a raw material. This is because the presence of the boundary between the skin layer and the surface layer can be greatly reduced no matter what liquid crystalline resin composition is used as a material.
- fibrous fillers examples include glass fibers, asbestos fibers, silica fibers, silica / alumina fibers, alumina fibers, zirconia fibers, boron nitride fibers, silicon nitride fibers, boron fibers, potassium titanate fibers, and silicates such as wollastonite.
- examples thereof include fibers, magnesium sulfate fibers, aluminum borate fibers, metal fibers such as stainless steel, aluminum, titanium, copper, and brass, and carbon fibers such as carbon fibers and carbon nanotubes.
- Reinforcing fibers that have been regarded as problems in particular are glass fibers and carbon fibers. Among these, carbon fiber is particularly a problem.
- the liquid crystalline resin composition used in the present invention includes other resins, nucleating agents, carbon black, pigments such as carbon black and inorganic calcined pigments, antioxidants, stabilizers, and plasticizers, as long as the effects of the present invention are not impaired.
- the liquid crystal resin composition used in the present invention also includes a composition provided with desired properties by adding additives such as a lubricant, a release agent and a flame retardant.
- die is used.
- the heat-insulating layer formed on the inner surface of the mold makes it difficult for the liquid crystalline resin composition that has flowed into the mold to harden in the vicinity of the mold surface.
- the molecules contained in the resin composition before solidification that contacts the resin composition solidified on the mold surface are prevented from being pulled by the resin composition after the solidification and the molecular orientation is increased on the surface of the molded body. Can do.
- the heat insulating layer formed on the inner surface of the mold is not particularly limited as long as it functions to delay solidification of the liquid crystalline resin composition on the mold surface.
- those having a heat insulating layer formed on a part of the inner surface of the mold are also included in the “mold having the heat insulating layer formed on the inner surface of the mold”. In this step, it is necessary to form a heat insulating layer on all of the desired inner surface portion of the mold corresponding to the portion where the boundary surface between the skin layer and the surface layer needs to be eliminated in at least the obtained molded body. Yes, it is preferable to form a heat insulating layer on the entire inner surface of the mold.
- the thickness (t1) of the heat insulating layer is not particularly limited as long as it is adjusted so as to satisfy the above formula (I) as described later.
- the thickness of the heat insulating layer formed on the inner surface of the mold may be uniform or may include portions having different thicknesses. When the thickness of the heat insulation layer is not uniform, the average thickness is set to t1.
- the thermal conductivity of the heat insulating layer formed on the inner surface of the mold is particularly preferably 5 W / m ⁇ K or less.
- the heat insulating layer needs to have heat resistance that can withstand the high temperature during molding.
- the heat insulating layer formed on the inner surface of the mold used in this step preferably contains a polyimide resin.
- a polyimide resin has a thermal conductivity of 5 W / m ⁇ K or less and has heat resistance enough to withstand high temperatures during molding.
- Specific examples of polyimide resins that can be used include pyromellitic acid (PMDA) -based polyimide, biphenyltetracarboxylic acid-based polyimide, polyamideimide using trimellitic acid, bismaleimide-based resins (bismaleimide / triazine-based, etc.), benzophenone Examples include tetracarboxylic acid-based polyimides, acetylene-terminated polyimides, and thermoplastic polyimides.
- a heat insulating layer made of a polyimide resin is preferable. Examples of preferable materials other than the polyimide resin include tetrafluoroethylene resin, polybenzimidazole resin, zirconia, and the like.
- the method for forming the heat insulating layer on the inner surface of the mold is not particularly limited.
- a solution of a polymer precursor such as a polyimide precursor capable of forming a polymer heat insulating layer is applied to the mold surface, heated to evaporate the solvent, and further heated to polymerize to form a heat insulating layer such as a polyimide film.
- a polymer precursor such as a polyimide precursor capable of forming a polymer heat insulating layer
- die using an adhesive tape-shaped polymer heat insulation film, and forming a heat insulation layer is mentioned. It is also possible to form a polyimide film and further form a chromium (Cr) film or a titanium nitride (TiN) film as a metal-based hard film on
- the boundary between the surface layer and the skin layer does not exist in at least a part of the surface of the molded body as will be described later.
- the problem with conventional plated resin moldings using liquid crystalline resins was that they peeled off at the interface between the skin layer and the surface layer, but the molded body obtained in this step is composed of the surface layer and the skin layer. Since there is no boundary between the above, the above problem does not occur.
- the molded body obtained in this step is characterized in that at least part of the boundary between the surface layer and the skin layer on the surface of the molded body is eliminated. As a result of obtaining such a molded body, there is no peeling between the skin layer and the surface layer. Thus, the molded body prevents the liquid crystalline resin composition that has flowed into the mold from immediately solidifying on the mold surface, and the molecules of the resin composition part before solidification are pulled by the solidified resin composition, so that the surface of the molded body It is presumed that it can be obtained by suppressing the molecular orientation from increasing.
- the heat insulating layer has a function of suppressing the resin composition from immediately solidifying on the mold surface when the molten liquid crystalline resin composition flows into the mold.
- the time for filling the resin composition in the mold is shortened by improving the injection speed. That is, the filling of the liquid crystal resin composition into the mold can be finished at a stage where the solidification of the liquid crystal resin composition does not proceed excessively. As a result, it can be suppressed that the molecules before solidification are pulled by the solidified resin composition and the molecular orientation is increased on the surface of the molded body.
- the molded body If the molded body is too thick, it takes time to fill the liquid crystalline resin composition into the mold. For this reason, when the thickness of the molded body is too thick, a phenomenon in which molecular alignment before the solidification is pulled by the solidified resin composition and molecular orientation is increased on the surface of the molded body tends to occur. According to this step, the boundary surface between the surface layer and the skin layer can be largely eliminated even in the case of a thick molded body.
- the heat insulating layer thickness t1 ( ⁇ m), the injection speed S (mm / sec), the mold temperature T (° C.), and the molded body thickness t2 (mm) satisfy the above formula (I).
- fill it exists in the point which discovered that the boundary of the surface layer and skin layer of a molded object surface disappeared.
- Heat insulation layer thickness t1 ( ⁇ m) will be described.
- Heat insulation layer thickness t1 should just be adjusted so that the said Formula (I) may be satisfy
- a more preferable heat insulating layer thickness t1 is 10 ⁇ m to 300 ⁇ m.
- the injection speed S (mm / sec) will be described.
- the injection speed S may be adjusted so as to satisfy the above formula (I) similarly to the heat insulating layer thickness t1.
- a more preferable injection speed is 50 mm / sec to 500 mm / sec.
- the mold temperature T (° C.) will be described.
- the mold temperature T may be adjusted so as to satisfy the above formula (I) similarly to the heat insulating layer thickness t1 and the like.
- the temperature of the mold can be adjusted with water, and a high-quality molded product can be easily obtained.
- a more preferable mold temperature range is 50 ° C to 100 ° C.
- the molded body thickness t2 can be adjusted in a wide range. Specifically, the molded body thickness t2 can be adjusted from 0.2 mm to 10 mm under the condition satisfying the above formula (I). Under the condition satisfying the above formula (II), t2 can be adjusted from 0.2 mm to 5 mm. In particular, when the thickness t2 of the molded body is in the range of 0.2 mm to 3 mm, peeling between the surface layer and the skin layer is likely to occur. However, forming by the method of this step eliminates the boundary between the surface layer and the skin layer. The problem is solved.
- the plating film forming step is a step of forming a plating film on the surface of the molded body by the plating film material particles colliding and adhering to the surface of the molded body. Since the surface of the molded body obtained in the above-mentioned molded body manufacturing process is very smooth, a plating film having an adhesive force is applied to the surface of the molded body unless the method is to collide the plating film material particles with the surface of the molded body. Cannot be formed.
- the plating film can be further stacked on the plating film by another general plating method.
- the plating film formed by sputtering or ion plating is thin, it is useful to thicken the plating film by a general plating method such as chemical plating or electroplating as necessary.
- Examples of methods for forming a plating film by causing the plating film material particles to collide with the surface of the molded body include an ion plating method and a sputtering method.
- Ion plating refers to a vapor deposition method in which evaporated plating film material particles are accelerated by ionization and driven onto the surface of a molded body.
- the ion plating method includes various methods depending on the ionization method and the like, and is not particularly limited. For example, a direct current discharge excitation method, a multi-cathode thermionic irradiation method, a high frequency excitation method (RF method), a hollow method, and the like.
- Cathode method (HCD method), cluster ion beam method (ICB method), activated reaction deposition method (ARE method), multi-arc method (arc discharge, AIP method), ion beam assisted deposition, electron beam excited plasma ion plating, etc. Is mentioned.
- reactive ion plating using a reactive gas or an organic monomer gas as the plasma gas can also be performed.
- the sputtering method is a method of performing vapor deposition using a so-called sputtering phenomenon in which constituent atoms of a base material are knocked out by applying high energy particles to the base material forming a plating film.
- the sputtering method include a high frequency sputtering method, a magnetron sputtering method, and an ion beam sputtering method (IBS method).
- IBS method ion beam sputtering method
- reactive sputtering using a reactive gas as a sputtering gas can also be performed.
- the plating film material is not particularly limited, and a desired plating film material can be used. Specifically, Al, Ti, Cr, Ag, Au, Fe, Ga, Zr, Nb, Mo, La, Ta, W, Mn, Re, Sr, Co, Rh, Pd, Ir, Pt, PtPd, MgF 2, SiO 2, MgO, HfO 2, Ta 2 O 5, CeO 2, TiO 2, TiN, TiC, CrN, Al 2 O 3, AlN, GaN, ITO, ZnO, and the like plated film material such as GaAs it can.
- the plated resin molded product of the present invention can be obtained by the method as described above.
- the plated resin molded product of the present invention will be described.
- FIG. 1A shows a cross-sectional view of a molded body used in the present invention.
- FIG.1 (b) sectional drawing of the plating resin molding of this invention is shown.
- FIG. 1 (c) shows a plated resin molded product of the present invention which is different from FIG. 1 (b).
- the molded body 1A shows a molded body 1, and the molded body 1 has a core layer 11 and a skin layer 12.
- the molded product used in the present invention is characterized by having no surface layer on the skin layer 12.
- FIG. 1 (b) shows a plated resin molded body in which a plated film 13 is formed on the molded body shown in FIG. 1 (a). Since the surface layer is not formed on the skin layer 12 in the molded body 1 shown in FIG. 1A, the plating resin molded body of the present invention does not have a problem of peeling at the interface between the surface layer and the skin layer.
- the case where the surface layer is not formed on the skin layer 12 includes not only the case where the surface layer is not formed but also the following case where the non-formed region occupies most and the surface layer is partly present.
- FIG. 1C shows a view in which a plating film 13 is formed on a molded body having a very small boundary between the surface layer 14 and the skin layer 12.
- the plated resin molded body as shown in FIG. 1C has a boundary between the surface layer 14 and the skin layer 12, the boundary does not exist only in a small part, so the surface layer 14 and the skin of the plated resin molded body. The problem of delamination with the layer 12 hardly occurs.
- FIG. 2 (a) shows a molded body formed by molding a liquid crystalline resin composition produced by a conventional method.
- FIG. 2B shows a plated resin molded body in which a plated film is formed on the molded body shown in FIG.
- FIG. 2 (c) shows a state where the surface is peeled between the surface layer and the skin layer of the plated resin molded body shown in FIG. 2 (b).
- FIG. 2A includes a core layer 21, a skin layer 22, and a surface layer 23.
- FIG. 2B shows a plated resin molded body in which a plated film 24 is formed on the molded body shown in FIG. Since the surface layer 23 and the skin layer 22 are clearly separated, the molded body 2 produced by the conventional method has a problem of peeling between the surface layer 23 and the skin layer 22 as shown in FIG. . This problem occurs even if the plating film is formed by any method as long as a boundary exists between the surface layer 23 and the skin layer 22.
- FIG. 3A shows the molded body produced in the above-described molded body manufacturing process.
- FIG. 3B shows a plated resin molded body in which a plated film is directly formed by chemical plating on the molded body shown in FIG.
- FIG. 3C shows a state where the plating film of the plated resin molded body is peeled off.
- the molded body 3 shown in FIG. 3 (a) does not have a surface layer, but has a core layer 31 and a skin layer 32, similarly to the molded body 1 shown in FIG. 1 (a).
- the surface of the skin layer 32 of the molded body 3 produced in the molded body manufacturing process is very smooth. For this reason, as shown in FIG. 3B, even if the plating film 33 is directly formed on the molded body 3 by chemical plating, the plating film 33 is peeled off as shown in FIG.
- the injection molded circuit component of the present invention is composed of the plated resin molded body of the present invention.
- the liquid crystalline resin maintains the molecular orientation in the molten state as it is even when the temperature is lowered, and thus, for example, molding processability such as thin-walled fluidity, mechanical properties such as strength and elastic modulus, dimensional stability, heat resistance, etc. Various excellent characteristics are expressed.
- a molded body obtained by molding a composition containing a liquid crystalline resin is used as a three-dimensional circuit board such as an injection-molded circuit component in combination with excellent molding processability. .
- the liquid crystal resin composition that can be plated is limited, and a desired liquid crystal resin composition cannot be used. It was.
- the injection-molded circuit component of the present invention uses a molded body having no boundary between the surface layer and the skin layer, there is no problem of peeling at the boundary between the surface layer and the skin layer. For this reason, the plated resin molding of the present invention is particularly suitable for use as a molded circuit board such as an injection molded circuit component.
- the method for forming the circuit pattern on the plated resin molding is not limited.
- a fine circuit pattern can be accurately formed by laser patterning without lowering the wiring accuracy. Therefore, the plated resin molded body of the present invention is also suitable for a three-dimensional circuit board (MID).
- MID three-dimensional circuit board
- Liquid crystalline resin composition 1 (A230): 30% carbon fiber-containing liquid crystalline resin composition, “Vectra (registered trademark) A230” (manufactured by Polyplastics)
- Liquid crystalline resin composition 2 (E130i): 30% glass fiber-containing liquid crystalline resin composition
- Vectra (registered trademark) E130i” (manufactured by Polyplastics)
- Liquid crystalline resin composition 3 (E463i): Mineral and glass fiber-containing liquid crystalline resin composition
- Vectra (registered trademark) E463i” (manufactured by Polyplastics)
- Heat insulation layer forming material 1 polyimide resin tape (manufactured by Sumitomo 3M), thermal conductivity 0.2 W / m ⁇ K
- Thermal insulation layer forming material 2 polyimide resin varnish (Fine Chemical Japan)
- Heat insulation layer forming material 3 polyimide resin film (manufactured
- the thermal conductivity of the polyimide resin was calculated by measuring the thermal diffusivity by laser flash method, specific gravity by Archimedes method, and specific heat by DSC.
- the heat insulating layer forming material 1 is pasted on the mold cavity surface of a flat plate mold having a width of 20 mm ⁇ a length of 50 mm ⁇ a thickness of 0.5 mm. Molding was performed under molding conditions such as the injection speed and mold temperature, to obtain an injection molded body.
- the conditions other than the molding conditions shown in the table are as follows. [Molding condition] Cylinder set temperature: 350 ° C Screw rotation speed: 150rpm
- a liquid crystalline resin composition 2 is used as a molding material, and a heat insulating layer forming material 3 is affixed to the mold cavity surface of an ISO standard test piece mold with double-sided tape. Was molded to obtain an injection molded body.
- the molding conditions other than those shown in Table 1 are the same as those in Evaluation Example 1.
- Example 1 [Molded body production process]
- the liquid crystalline resin composition 1 is used as a molding material, and the heat insulating layer forming material 2 is applied to a mold cavity surface of a flat plate molding mold having a width of 20 mm ⁇ a length of 50 mm ⁇ a thickness of 1.0 mm, and 250 ° C.
- the polyimide surface was polished and the heat insulating layer thickness was adjusted to 70 ⁇ m, and then molded under molding conditions such as the mold temperature in Table 2 to obtain a molded body.
- the conditions other than the molding conditions shown in the table are as follows. (Molding condition) Cylinder set temperature: 350 ° C Screw rotation speed: 150rpm Injection speed: 100mm / sec
- Example 2 A plated resin molded article of Example 2 was produced in the same manner as in Example 1 except that the liquid crystalline resin composition 1 was changed to the liquid crystalline resin composition 2.
- Example 3 A plated resin molded article of Example 3 was produced in the same manner as in Example 1 except that the liquid crystalline resin composition 1 was changed to the liquid crystalline resin composition 3.
- Comparative Example 2 A plated resin molded article of Comparative Example 1 was produced in the same manner as in Example 1 except that the heat insulating layer was not formed in the mold.
- Comparative Example 3 A plated resin molded article of Comparative Example 2 was produced in the same manner as in Example 2 except that the heat insulating layer was not formed in the mold.
- Comparative Example 4 A plated resin molded article of Comparative Example 3 was produced in the same manner as in Example 3 except that the heat insulating layer was not formed in the mold.
- Comparative Example 4 In all of Comparative Examples 2 to 4, the number of peels was 100, but in Comparative Example 2, there was almost no part that was not peeled in the grid. On the other hand, in Comparative Example 4, there were many portions that were not peeled off in all the grids.
- the peeling state of Comparative Example 3 was intermediate between Comparative Example 2 and Comparative Example 4. It has been confirmed that the present invention has a sufficient effect even when a liquid crystalline resin composition that is easily peeled is used.
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- Moulds For Moulding Plastics Or The Like (AREA)
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Abstract
Description
[数1]
(t1×S)/t2+T≧1000 ・・・ (I)
[数2]
(t1×S)/t2+T≧2000 ・・・ (II)
成形体製造工程とは、液晶性樹脂組成物を特定の条件で成形することにより成形体を得る工程である。本工程は、金型内表面に断熱層が形成された金型を用いることと、断熱層の厚みt1(μm)、射出速度S(mm/sec)、成形体の厚みt2(mm)、金型温度T(℃)とした場合に、下記の式(I)を満たす成形条件で射出成形こととを特徴とする。
[数3]
(t1×S)/t2+T≧1000 ・・・ (I)
(1)主として芳香族ヒドロキシカルボン酸及びその誘導体の1種又は2種以上からなるポリエステル;
(2)主として(a)芳香族ヒドロキシカルボン酸及びその誘導体の1種又は2種以上と、(b)芳香族ジカルボン酸、脂環族ジカルボン酸及びその誘導体の1種又は2種以上と、(c)芳香族ジオール、脂環族ジオール、脂肪族ジオール及びその誘導体の少なくとも1種又は2種以上、とからなるポリエステル;
(3)主として(a)芳香族ヒドロキシカルボン酸及びその誘導体の1種又は2種以上と、(b)芳香族ヒドロキシアミン、芳香族ジアミン及びその誘導体の1種又は2種以上と、(c)芳香族ジカルボン酸、脂環族ジカルボン酸及びその誘導体の1種又は2種以上、とからなるポリエステルアミド;
(4)主として(a)芳香族ヒドロキシカルボン酸及びその誘導体の1種又は2種以上と、(b)芳香族ヒドロキシアミン、芳香族ジアミン及びその誘導体の1種又は2種以上と、(c)芳香族ジカルボン酸、脂環族ジカルボン酸及びその誘導体の1種又は2種以上と、(d)芳香族ジオール、脂環族ジオール、脂肪族ジオール及びその誘導体の少なくとも1種又は2種以上、とからなるポリエステルアミド等が挙げられる。さらに上記の構成成分に必要に応じ分子量調整剤を併用してもよい。
繊維状充填剤としてはガラス繊維、アスベスト繊維、シリカ繊維、シリカ・アルミナ繊維、アルミナ繊維、ジルコニア繊維、窒化硼素繊維、窒化珪素繊維、硼素繊維、チタン酸カリ繊維、ウォラストナイトの如き珪酸塩の繊維、硫酸マグネシウム繊維、ホウ酸アルミニウム繊維、さらにステンレス、アルミニウム、チタン、銅、真鍮等の金属の繊維状物、カーボンファイバー、カーボンナノチューブ等の炭素の繊維状物が挙げられる。特に従来問題とされていた強化繊維は、ガラス繊維、カーボンファイバーである。この中でも特にカーボンファイバーが問題となっている。
本工程で成形体を製造する際には、金型の内表面(金型の内側の表面)に断熱層が形成された金型を用いる。金型の内側の表面に形成された断熱層により、金型内に流れ込んだ液晶性樹脂組成物は金型表面付近で固まり難くなる。その結果、金型表面で固化した樹脂組成物に接触する固化前の樹脂組成物に含まれる分子が、その固化後の樹脂組成物に引っ張られ成形体表面で分子配向が大きくなることを抑えることができる。その結果、表層とスキン層との間の境界が無くなり、メッキ膜形成後に表層とスキン層との間の境界面で剥離することがなくなる。
本工程では、断熱層の厚みt1(μm)、射出速度S(mm/sec)、成形体の厚みt2(mm)、金型温度T(℃)とした場合に、下記式(I)の関係式を満たす成形条件で射出成形を行うことを特徴とする。
[数4]
(t1×S)/t2+T≧1000 ・・・ (I)
[数5]
(t1×S)/t2+T≧2000 ・・・ (II)
メッキ膜形成工程とは、メッキ膜材料粒子が上記成形体の表面に衝突し付着することにより成形体の表面にメッキ膜を形成する工程である。上記の成形体製造工程で得られる成形体は表面が非常になめらかなため、メッキ膜材料粒子を成形体の表面に衝突させるような方法でなければ密着力のあるメッキ膜を成形体の表面に形成することができない。
本発明のメッキ樹脂成形体は、上記のような方法で得ることができる。本発明のメッキ樹脂成形体について説明する。
本発明の射出成形回路部品は、上記本発明のメッキ樹脂成形体からなる。液晶性樹脂は、温度を下げても溶融状態における分子の配向がそのまま固定され、これによって例えば薄肉流動性等の成形加工性、強度や弾性率等の力学的特性、寸法安定性、耐熱性等の種々の優れた特性が発現される。また、成形加工性に優れることも相俟って、液晶性樹脂を含む組成物を成形して得られる成形体は、射出成形回路部品等の立体回路基板として用いることが好ましとされている。しかしながら、従来は、表層とスキン層との間の境界での剥離の問題があり、メッキ形成可能な液晶性樹脂組成物は限られており、所望の液晶性樹脂組成物を用いることができなかった。
液晶性樹脂組成物1(A230):カーボンファイバー30%含有液晶性樹脂組成物、「ベクトラ(登録商標)A230」(ポリプラスチックス社製)
液晶性樹脂組成物2(E130i):ガラス繊維30%含有液晶性樹脂組成物「ベクトラ(登録商標)E130i」(ポリプラスチックス社製)
液晶性樹脂組成物3(E463i):ミネラル及びガラス繊維含有液晶性樹脂組成物「ベクトラ(登録商標)E463i」(ポリプラスチックス社製)
断熱層形成材料1:ポリイミド樹脂テープ(住友スリーエム社製)、熱伝導率0.2W/m・K
断熱層形成材料2:ポリイミド樹脂ワニス(ファインケミカルジャパン社製)、熱伝導率0.2W/m・K
断熱層形成材料3:ポリイミド樹脂フィルム(東レ・デュポン社製)、熱伝導率0.2W/m・K
成形用材料として液晶性樹脂組成物2を用い、幅20mm×長さ50mm×厚さ0.5mmの平板成形用金型の金型キャビティー面に、断熱層形成材料1を貼付し、表1中の射出速度、金型温度等の成形条件にて成形を行い、射出成形体を得た。なお、表に示す成形条件以外の条件は下記の通りである。
[成形条件]
シリンダー設定温度:350℃
スクリュー回転数:150rpm
成形用材料として液晶性樹脂組成物2を用い、40mm□×厚さ1mmの平板成形用金型の金型キャビティー面に、断熱層形成材料2をスプレーし、250℃、1時間で焼付けした後、ポリイミド面を研摩し、表1中の断熱層厚みに調整した後、表1中の射出速度、金型温度にて成形を行い、射出成形体を得た。なお、表1に示す以外の成形条件は評価例1と同様である。
成形条件を表1に示す条件に変更した以外は評価例2と同様の方法で射出成形体を製造した。なお、表1に示す以外の成形条件は評価例1と同様である。
成形用材料として液晶性樹脂組成物2を用い、ISO標準試験片金型の金型キャビティー面に、断熱層形成材料3を両面テープにて貼付し、表1中の射出速度、金型温度にて成形を行い、射出成形体を得た。なお、表1に示す以外の成形条件は評価例1と同様である。
成形条件を表1に示す条件に変更した以外は評価例4と同様の方法で射出成形体を製造した。なお、表1に示す以外の成形条件は評価例1と同様である。
成形条件を表1に示す条件に変更した以外は評価例4と同様の方法で射出成形体を製造した。なお、表1に示す以外の成形条件は評価例1と同様である。
金型内に断熱層を形成しなかった以外は評価例1と同様の方法で射出成形体を製造した。
成形条件を表1に示す条件に変更した以外は評価例7と同様の方法で射出成形体を製造した。なお、表1に示す以外の成形条件は評価例1と同様である。
評価例1~8の射出成形体について、碁盤目試験評価、超音波洗浄試験評価を行った。
JIS K5400に準じた方法で評価を行い、1mm□の100格子の内の剥離された格子数にて評価を行った。評価結果を表1に示した。
評価例の射出成形体を水に浸漬し、1分間超音波洗浄を実施し、表面のフィブリル発生状況を表面の白化現象として測定し、フィブリル発生の有無を評価した。評価結果を表1に示した。
[成形体作製工程]
成形用材料として液晶性樹脂組成物1を用い、幅20mm×長さ50mm×厚さ1.0mmの平板成形用金型の金型キャビティー面に、断熱層形成材料2を塗布し、250℃、1時間で焼付けした後、ポリイミド面を研磨し、断熱層厚みを70μmに調整した後、表2中の金型温度等の成形条件にて成形を行い、成形体を得た。なお、表に示す成形条件以外の条件は下記の通りである。
(成形条件)
シリンダー設定温度:350℃
スクリュー回転数:150rpm
射出速度:100mm/sec
スパッタリング装置(日立製作所製 E102)を用い、真空槽内を0.05Torrまで高真空化した後、電流値が15mAになるように設定した上、白金パラジウムターゲットを用い、ターゲットから30mmの位置になる様に基板にセットした成形体にスパッタリングを行い、白金パラジウム膜を形成させ、実施例1のメッキ樹脂成形体を得た。
液晶性樹脂組成物1から液晶性樹脂組成物2に変更した以外は実施例1と同様の方法で実施例2のメッキ樹脂成形体を作製した。
液晶性樹脂組成物1から液晶性樹脂組成物3に変更した以外は実施例1と同様の方法で実施例3のメッキ樹脂成形体を作製した。
[成形体作製工程]
液晶性樹脂組成物1から液晶性樹脂組成物2に変更した以外は実施例1と同様の方法で成形体を作製した。
OPC-750(奥野製薬工業株式会社製)に室温で成形体を20分間浸漬し、化学メッキ法により、銅メッキ膜を成形体表面に形成した。
金型内に断熱層を形成しなかった以外は実施例1と同様の方法で比較例1のメッキ樹脂成形体を作製した。
金型内に断熱層を形成しなかった以外は実施例2と同様の方法で比較例2のメッキ樹脂成形体を作製した。
金型内に断熱層を形成しなかった以外は実施例3と同様の方法で比較例3のメッキ樹脂成形体を作製した。
11 コア層
12 スキン層
13 メッキ膜
Claims (9)
- 液晶性樹脂組成物を成形してなる成形体の表面にメッキ膜を有するメッキ樹脂成形体であって、
前記成形体のスキン層上に表層が形成されず、
前記メッキ膜は、メッキ膜材料粒子が前記成形体の表面に衝突し付着することにより形成されるメッキ膜であるメッキ樹脂成形体。 - 液晶性樹脂組成物を成形してなる成形体の表面にメッキ膜を有するメッキ樹脂成形体を製造する方法であって、
前記成形体は、金型内表面に断熱層が形成された金型を用い、断熱層の厚みt1(μm)、射出速度S(mm/sec)、成形体の厚みt2(mm)、金型温度T(℃)とした場合に、下記の式(I)を満たす成形条件で射出成形してなる成形体であり、
前記メッキ膜は、メッキ膜材料粒子が前記成形体の表面に衝突し付着することにより形成されるメッキ膜であるメッキ樹脂成形体の製造方法。
[数1]
(t1×S)/t2+T≧1000 ・・・ (I) - 前記成形条件が下記の式(II)を満たす成形条件である請求項2に記載のメッキ樹脂成形体の製造方法。
[数2]
(t1×S)/t2+T≧2000 ・・・ (II) - 前記メッキ膜は、イオンプレーティング又はスパッタリング法により形成されるメッキ膜である請求項2又は3に記載のメッキ樹脂成形体の製造方法。
- 前記断熱層は、熱伝導率が5W/m・K以下である請求項2から4のいずれかに記載のメッキ樹脂成形体の製造方法。
- 前記断熱層は、ポリイミド樹脂を含む請求項2から5のいずれかに記載のメッキ樹脂成形体の製造方法。
- 金型温度Tが、100℃以下である請求項2から6のいずれかに記載のメッキ樹脂成形体の製造方法。
- 請求項1から7のいずれかに記載の製造方法で得られたメッキ樹脂成形体。
- 請求項8に記載のメッキ樹脂成形体からなる成形回路基板。
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- 2010-11-05 TW TW099138088A patent/TW201120256A/zh unknown
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JPH0335585A (ja) * | 1989-07-03 | 1991-02-15 | Polyplastics Co | 精密細線回路用成形品の製造方法 |
JPH03140235A (ja) * | 1989-10-27 | 1991-06-14 | Sankyo Kasei Co Ltd | 樹脂成形品の製法 |
JPH06198667A (ja) * | 1992-12-28 | 1994-07-19 | Asahi Chem Ind Co Ltd | 合成樹脂の射出成形法 |
JP2002292674A (ja) * | 2001-03-30 | 2002-10-09 | Asahi Kasei Corp | 高外観成形品の射出成形方法 |
JP2003268089A (ja) * | 2002-03-13 | 2003-09-25 | Toray Ind Inc | 成形品用液晶性ポリエステル樹脂および成形回路基板 |
JP2004018607A (ja) * | 2002-06-14 | 2004-01-22 | Toray Ind Inc | 液晶性ポリエステル、その製造方法および熱可塑性樹脂組成物 |
JP2005290370A (ja) * | 2004-03-10 | 2005-10-20 | Matsushita Electric Works Ltd | 金属被覆樹脂成形品およびその製造方法 |
JP2006249159A (ja) * | 2005-03-09 | 2006-09-21 | Polyplastics Co | 表面加工用液晶性ポリエステル樹脂組成物 |
Also Published As
Publication number | Publication date |
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KR101385708B1 (ko) | 2014-04-15 |
TW201120256A (en) | 2011-06-16 |
JPWO2011058901A1 (ja) | 2013-03-28 |
JP5520311B2 (ja) | 2014-06-11 |
CN102596562A (zh) | 2012-07-18 |
KR20120085878A (ko) | 2012-08-01 |
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