WO2005068193A1 - 接着フィルム並びにそれから得られる寸法安定性を向上させたフレキシブル金属張積層板、並びにその製造方法 - Google Patents
接着フィルム並びにそれから得られる寸法安定性を向上させたフレキシブル金属張積層板、並びにその製造方法 Download PDFInfo
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- WO2005068193A1 WO2005068193A1 PCT/JP2004/019850 JP2004019850W WO2005068193A1 WO 2005068193 A1 WO2005068193 A1 WO 2005068193A1 JP 2004019850 W JP2004019850 W JP 2004019850W WO 2005068193 A1 WO2005068193 A1 WO 2005068193A1
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- Prior art keywords
- film
- polyimide
- adhesive
- heating
- clad laminate
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Classifications
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
- C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09J179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
Definitions
- the present invention relates to an adhesive film provided with an adhesive layer containing a thermoplastic polyimide on at least one side of a polyimide film, and a flexible film obtained by laminating a metal foil to the adhesive film with a hot roll laminating apparatus.
- the present invention relates to a metal-clad laminate and a method for producing the same. More specifically, the adhesive film is characterized in that the polyimide film is heated and conveyed in a relaxed state in the width direction (hereinafter also referred to as TD direction) during film formation.
- Flexible metal-clad laminate obtained by bonding metal foils with a metal foil device, preferably at a dimensional change rate before and after metal foil removal, and at 250 ° C. for 30 minutes after metal foil removal.
- the total value of the dimensional change before and after the heating of the flexible metal-clad laminate in the longitudinal direction (hereinafter also referred to as the MD direction) and in the TD direction is in the range of 1.06 to 10.0%. , And its manufacturing method.
- the flexible printed wiring board has a structure in which a circuit made of a metal foil is formed on an insulating film.
- the flexible metal-clad laminate which is the basis of the flexible printed wiring board, is generally formed of various insulating materials, uses a flexible insulating film as a substrate, and attaches a metal to the surface of the substrate via various adhesive materials. Foil It is manufactured by a method of bonding by heating and pressing.
- a polyimide film or the like is preferably used.
- thermosetting adhesives of epoxy type, acrylic type and the like are generally used (FPC using these thermosetting adhesives is hereinafter also referred to as three-layer FPC).
- Thermosetting adhesives have the advantage that they can be bonded at relatively low temperatures.
- the required characteristics such as heat resistance, flexibility, and electrical reliability become stricter, it will be difficult to cope with a three-layer FPC using a thermosetting adhesive.
- FPCs in which a metal layer is directly provided on an insulating film or a thermoplastic polyimide is used for an adhesive layer (hereinafter, also referred to as a two-layer FPC).
- This two-layer FPC has better characteristics than the three-layer FPC, and demand is expected to grow in the future.
- the flexible metal-clad laminate used for the two-layer FPC is manufactured by casting a solution of polyamic acid, a precursor of polyimide, on a metal foil, applying the solution, and then forming an imidized solution.
- Examples include a metallizing method in which a metal layer is directly provided on a polyimide film by sputtering or plating, and a laminating method in which a polyimide film and a metal foil are bonded via a thermoplastic polyimide.
- the laminating method is superior in that the applicable metal foil thickness range is wider than that of the casting method, and that the equipment cost is lower than that of the metallizing method.
- a hot roll laminating device for continuously laminating while feeding out a roll-shaped material or a double pan / let press device is used. From the viewpoint of productivity, the hot roll lamination method can be more preferably used.
- Laminating temperature can be less than 200 ° C because thermosetting resin is used for adhesive layer when laminating conventional three-layer FPC (See Japanese Patent Application Laid-Open No. 9-198030).
- the two-layer FPC uses thermoplastic polyimide as the adhesive layer, so it is necessary to apply a high temperature of 200 ° C or more, and in some cases, close to 400 ° C in order to develop heat-fusion properties.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide an adhesive film capable of obtaining a flexible metal-clad laminate in which dimensional change is suppressed when produced by a laminating method, and Flexible metal-clad laminate obtained by laminating metal foil, especially when manufactured by the laminating method
- Another object of the present invention is to provide a flexible metal-clad laminate capable of suppressing the occurrence of dimensional change, and a method for producing the same.
- the present inventors have conducted intensive studies in view of the above problems, and as a result, by using a polyimide film which is formed under specific conditions and oriented in the MD direction as a core film, it is possible to obtain a thermoplastic polyimide at the time of imidization.
- the inventors of the present invention have independently found that thermal stress during lamination can be mitigated and dimensional change can be effectively suppressed, and have completed the present invention.
- the i-th aspect of the present invention is an adhesive film provided with an adhesive layer containing a thermoplastic polyimide on at least one surface of the polyimide film, wherein the polyimide film is
- the present invention relates to an adhesive film characterized by being obtained by:
- the molecular orientation axis angle with respect to the MD direction of the polyimide film is 0 (°)
- 15 ⁇ 0 ⁇ 15 in any portion in the film width direction (TD direction) 15 ⁇ 0 ⁇ 15 in any portion in the film width direction (TD direction).
- the present invention relates to the above adhesive finolem, wherein
- the linear expansion coefficient (200 to 300 ° C.) in the MD direction (ppm / ° C.) of the polyimide film is set to (ppm / ° C.), and the linear expansion coefficient (200 to 300 ° C.) in the TD direction. (0 0 ° C) as ⁇ 2 (ppm / ° C), 2 ⁇ a, ⁇ 1 0, d ⁇ 1 3 ⁇ a 2 ⁇ 2 5, power 2 0 (a, + a 2 ) ⁇
- the present invention relates to the adhesive film, wherein the adhesive film is within a range of 40.
- a second aspect of the present invention relates to a flexible metal-clad laminate obtained by laminating a metal foil to the adhesive film using a hot roll laminating apparatus having a pair of metal rolls or more.
- the sum of the dimensional change before and after removing the metal foil and the dimensional change before and after heating at 250 ° C. for 30 minutes after the metal foil is removed are in the MD and TD directions.
- the present invention relates to the flexible metal-clad laminate, wherein both are in the range of 0.06 to + 0.06%.
- a third aspect of the present invention is a method for producing an adhesive film in which an adhesive layer containing a thermoplastic polyimide is provided on at least one surface of the polyimide film, wherein the polyimide film comprises:
- the occurrence of dimensional change is suppressed, and in particular, the occurrence of dimensional change in the laminating method can also be effectively suppressed.
- the sum of the dimensional change before and after removing the metal foil, and the dimensional change before and after heating at 250 ° C for 30 minutes after removing the metal foil is the MD direction, It is possible to set the range of 1-0.06 to + 0.06% in both 0 directions. Therefore, it can be suitably used for an FPC or the like in which fine wiring is formed, and can solve problems such as displacement.
- FIG. 4 Diagram of tenter furnace and scaling ratio Best mode for carrying out the invention
- the adhesive film of the present invention is an adhesive film provided with an adhesive layer containing a thermoplastic polyimide on at least one side of the polyimide film.
- step (C) is obtained by a manufacturing method in which the film is transported in a relaxed state in the TD direction.
- thermoplastic polyimide When bonding an adhesive film provided with an adhesive layer containing a thermoplastic polyimide on at least one side of the polyimide film to a metal foil, a dimensional change is a particular problem when bonded by a thermal lamination method.
- heating and pressing are also performed continuously when bonding metal foil, so the material is It is often placed in a heated environment under tension.
- the present inventors have found that if a polyimide film obtained by a specific manufacturing method is used as the polyimide film in the adhesive film, the dimensional change generated due to the lamination with the metal foil, particularly by the thermal lamination method. It has been found that it is possible to suppress the dagger.
- step (C) uses a polyimide film obtained by a manufacturing method in which the film is relaxed in the TD direction and conveyed, different thermal stresses will occur in the MD and TD directions. Even so, the distortion can be offset, and the occurrence of dimensional change can be suppressed.
- the polyimide film of the present invention is obtained from a solution of a polyamide acid, which is a precursor of the polyimide.
- Any known method can be used as a method for producing a polyamic acid which is a precursor of the polyimide used in the present invention.
- an aromatic acid dianhydride and an aromatic diamine are produced by substantially isolating an aromatic dianhydride and an aromatic diamine.
- Molar amount The polyamic acid is dissolved in an organic solvent, and the resulting polyamic acid organic solvent solution is stirred under controlled temperature conditions until the polymerization of the acid dianhydride and diamine is completed.
- These polyamic acid solutions are usually obtained at a concentration of 5 to 35 wt%, preferably 10 to 30 wt%. When the concentration is in this range, an appropriate molecular weight and solution viscosity are obtained.
- any known method or a method combining them can be used.
- the characteristic of the polymerization method in the polymerization of polyamic acid lies in the order of addition of the monomers, and by controlling the order of addition of the monomers, it is possible to control various physical properties of the obtained polyimide. Therefore, in the present invention, any method of adding a monomer may be used for the polymerization of the polyamic acid.
- Typical polymerization methods include the following methods. That is,
- a polyamic acid obtained by any of the above polymerization methods may be used, and the polymerization method is not particularly limited.
- a prepolymer is prepared by using a diamine component having a rigid structure represented by para-phenylenediamine-substituted benzene. It is preferable to use a polymerization method for obtaining By using this method, a polyimide film having a high modulus of elasticity and a small coefficient of hygroscopic expansion tends to be easily obtained.
- the molar ratio of the diamine having a rigid structure and the acid dianhydride used in the preparation of the prepolymer is 100: 70 to 100: 99 or 70: 100 to 99: Preferred is 100, more preferably 100: 75-: L00: 90 or 75: 100-90: 100. If the ratio is less than the above range, it is difficult to improve the elastic modulus and the coefficient of hygroscopic expansion.If the ratio is more than the above range, adverse effects such as an excessively small thermal expansion coefficient and reduced tensile elongation may occur. There is.
- Suitable acid dianhydrides that can be used in the present invention are pyromellitic dianhydride, 2,3,6,7-naphthalenetetracarboxylic dianhydride, 3,3 ′ 4,4'-Biphenyltetracarboxylic dianhydride, 1,2,5,6-Naphthalenetetracarboxylic dianhydride, 2,2,3,3, -Biphenyltetracarboxylic dianhydride, 3,3,, 4,4,1 Benzophenonetetracarponic dianhydride, 4,4, Monoxyphthalic dianhydride, 2,2-Bis (3,4 dicanolepoxyphenol) propane Anhydride, 3, 4, 9:10-Perylene l-Toluic acid dianhydride, bis (3,4-dicarboxyphenyl) propane dianhydride, 1,1-bis (2,3-dicanoleboxoxyphenyl) ethaneni anhydride 1,1, -bis (3,4-dicanololepoxy
- acid dianhydrides in particular, pyromellitic dianhydride, 3,3'4,4,1-benzophenonetetracarboxylic dianhydride, 3,3,4,4,4-oxyphthalic acid It is preferable to use at least one selected from acid dianhydride, 3,3,4,4,4-biphenyltetracarboxylic dianhydride.
- 3,3,4,4'-benzophenonetetracarboxylic dianhydride, 4,4, monophthalic dianhydride, 3,3 ', 4,4' -Biphenyltetracarboxylic dianhydride is used in an amount of at least one preferred amount of 60 mol based on the total acid dianhydride. It is at most 1%, preferably at most 55 mo 1%, more preferably at most 50 mo 1%.
- the preferred amount is 40 to: L 0 mo 1%, more preferably 45 to 1 O 0 mo 1%, particularly preferably 50 to 1%. 100 mol%.
- Suitable diamines that can be used in the polyimide precursor polyamide acid according to the present invention include 4,4, diaminodiphenylpropane, 4,4 ′ diaminodipheninolemethane, benzidine, 3,3, Dicyclobenzidine, 3,3'-dimethylbenzidine, 2,2'-dimethynolebenzidine, 3,3 'dimethoxybenzidine, 2,2,1-dimethoxybenzidine, 4,4, -diaminodiphenyls Norefide, 3,3, Jiaminodipheninolesulfone, 4,4, Jiaminodipheninolesulfone, 4,4'-oxydiurine, 3,3, dioxydianiline, 3,4, doxydianiline , 1,5-Diaminonaphthalene, 4,4, diaminodiphenylphenylethylsilane, 4,4'diaminodiphenylphenylsilane, 4,4, dia Roh diphenyl E chill phosphin
- rigid structures are considered as rigid structures.
- the use ratio of the diamine having a flexible structure is 80 Z 20 to 20 Z 80, preferably 70/30 to 30/70, and particularly preferably 60/40 to 30/7 in terms of molar ratio. It is 0.
- the use ratio of the rigid-structured diamine exceeds the above range, the tensile elongation of the obtained film tends to decrease, and when the ratio is below this range, the glass transition temperature becomes too low or the storage elasticity under heat is increased.
- the polyimide film used in the present invention is obtained by appropriately determining the types and blending ratios of the aromatic dianhydride and the aromatic diamine so as to obtain a film having desired characteristics within the above range. be able to.
- any solvent can be used as long as it can dissolve the polyamide acid, but an amide solvent, ie, ⁇ , ⁇ -dimethylformamide, ⁇ , ⁇ — Dimethyl acetate And N-methyl-2-pyrrolidone, and N, N-dimethylformamide and N, N-dimethylacetamide can be particularly preferably used.
- an amide solvent ie, ⁇ , ⁇ -dimethylformamide, ⁇ , ⁇ — Dimethyl acetate And N-methyl-2-pyrrolidone, and N, N-dimethylformamide and N, N-dimethylacetamide can be particularly preferably used.
- a filler can be added for the purpose of improving various properties of the film such as slidability, thermal conductivity, conductivity, corona resistance, and loop stiffness.
- Any filler may be used, but preferred examples include silica, titanium oxide, alumina, silicon nitride, boron nitride, calcium hydrogen phosphate, calcium phosphate, and mica.
- the particle size of the filler is not particularly limited because it is determined by the properties of the film to be modified and the type of filler to be added, but generally the average particle size is from 0.05 to: ⁇ ⁇ ⁇ ⁇ ⁇ , preferably 0.1 to 75 // m, more preferably 0.:! to 50 ⁇ , particularly preferably 0.1 to 25 tm. If the particle diameter is below this range, the modifying effect is less likely to appear, and if it exceeds this range, the surface properties may be significantly impaired, or the mechanical properties may be significantly reduced. Also, the number of parts to be added to the filler is not particularly limited since it is determined by the film characteristics to be modified / the filler particle diameter.
- the filler is added in an amount of 0.01 to 100 parts by weight, preferably 0.01 to 90 parts by weight, more preferably 0.02 parts by weight, based on 100 parts by weight of the polyimide. ⁇ 80 parts by weight. If the amount of filler is less than this range, the effect of modifying by the filler is unlikely to appear, and if it exceeds this range, the mechanical properties of the film may be significantly impaired. Filler addition
- a dispersion containing the filler and mix it with the polyamic acid organic solvent solution
- a method of mixing a dispersion containing a filler with a polyamic acid solution is preferable because contamination by a filler in a production line is minimized.
- a dispersant, a thickener and the like can be used within a range that does not affect the physical properties of the film.
- This method includes a thermal imidization method and a chemical imidization method.
- the thermal imidization method is a method in which the imidization is promoted only by heating without the above-mentioned dehydrating agent and imidization catalyst acting. Heating conditions can vary depending on the type of polyamic acid, film thickness, and the like.
- the chemical imidation method is a method in which a dehydrating agent and an imidation catalyst are allowed to act on a polyamic acid organic solvent solution. Examples of the dehydrating agent include aliphatic acid anhydrides such as acetic anhydride, and aromatic acid anhydrides such as anhydride and carboxylic acid.
- the imidization catalyst examples include aliphatic tertiary amines such as tri: ⁇ tylamine, aromatic tertiary amines such as dimethylalanine, and heterocyclic tertiary amines such as pyridine, picolin and isoquinoline. Amines and the like. Among them, it is particularly preferable to use acetic anhydride as a dehydrating agent and isoquinoline as an imidization catalyst.
- the dehydrating agent is used in a molar ratio of 1.0 to 4.0, preferably 1.2 to 3.5, more preferably 1.5 to 2.5 with respect to 1 mol of the acid of the polyamic acid organic solvent.
- the power of addition S is good, and the imidization catalyst is used in a molar ratio of 0.1 to 2.0, preferably 0.2 to 1.5, with respect to 1 mol of the amic acid in the polyamic acid organic solvent solution. More preferred When added at a ratio of 0.3 to 1.2, particularly preferably 0.3 to 1.1, a good polyimide film can be obtained.
- the adhesive film according to the present invention when forming a polyimide film as a core, undergoes the following steps (A) to (C) to obtain a polyimide film oriented in the MD direction.
- steps (A) to (C) When laminating metal foils by the laminating method, the difference in thermal stress between the MD and TD directions of the adhesive film is suppressed, and a flexible metal-clad laminate with reduced dimensional change is obtained.
- an adhesive layer is provided on at least one side of the polyimide film by a method in which a solution of a polyamic acid, which is a precursor of a thermoplastic polyimide, is cast, applied, and then continuously heated to form an imid.
- a solution of a polyamic acid which is a precursor of a thermoplastic polyimide
- step (C) it is important that the film is transported in a relaxed state in the TD direction at least in part.
- step (A) the organic solvent dissolving the polyamic acid solution, the imidization catalyst, the dehydrating agent, and the reaction product (water absorbing component of the dehydrating agent, water) remain as residual components in the gel film.
- the residual component ratio of the gel film in the step (A) is preferably from 5 to 200%, more preferably from 10 to 100%.
- the polyimide solid content weight is the weight when the gel film is completely dried.
- the film is fixed in a substantially tensionless state in the width direction.
- the relaxed state when transported in the TD direction in the relaxed state in the TD direction means that in addition to the tension due to the film's own weight, the tensile tension due to mechanical handing is not applied in the TD direction. It means that. This means that the width of the film between the fixed ends at both ends is substantially larger than the distance between the fixed ends at both ends of the film.
- both ends of the film are in tension with the pins, and the distance between the fixed ends of the two ends and the width of the film between the fixed ends are the same.
- the distance between the fixed ends at both ends is different from the width of the film therebetween, and the distance between the fixed ends at both ends is small.
- the film is loosened and fixed.
- X and Y satisfy the following IB formula.
- it is fixed to. 1 2 0.0 ⁇ (XY) / ⁇ ⁇ 1 0 0 ⁇ 0.0.0 0
- (X- ⁇ ) / ⁇ X 100 (this is sometimes referred to as TD shrinkage for convenience) is made smaller than the above range, it becomes difficult to control the film slack stably, and the amount of slack progresses. May vary for the method. In some cases, loosening of the film may cause the end portion to fall off the toe-holding device, making it impossible to produce a stable film. It is more preferable that 10.0 ⁇ (X -—) / ⁇ X100 ⁇ 0.0. It is particularly preferable that 15.0 ⁇ (X- ⁇ ) / ⁇ X100 ⁇ 0.0.
- the step (C) may include a step of stretching the film in the TD direction.
- the step of stretching the film in the TD direction in the present invention is a step of stretching the film in the TD direction in a heating furnace after transporting the film in a relaxed state.
- the film shrinks to some extent. After the film shrinks and the film no longer sags, the film is stretched in the TD direction.
- the amount of stretching (referred to as the expansion ratio for convenience) is the width of the fixed ends at both ends in the TD direction before stretching, and the width of the fixed ends at both ends when the film is stretched in the TD direction in the furnace.
- C it is preferable to satisfy the following expression.
- the film may be stretched in the TD direction while gradually widening the holding width of the film. Furthermore, if necessary, relax again after this step.
- the film may be conveyed in a state, and the film width can be increased. It is preferable to appropriately select the shrinkage amount and the enlargement amount.
- the temperature of the first heating furnace to which the gel film is transported in the step (C) is preferably 100 to 300 ° C.
- the first heating time is preferably set to 10 to 600 seconds.
- the relaxed state in the TD direction is preferably achieved before being transferred to the heating furnace.
- the relaxed state may be made when both ends are fixed (the film is loosened in the TD direction and both ends are fixed).
- Figure 1 shows an image of the film cross section.
- the heating furnace is treated in a hot air heating furnace and then continuously heated in a far infrared furnace. Further, it is preferable to provide two or more heating furnaces for heating in a stepwise manner. Because if there is only one hot-air heating furnace and the film is heated immediately in the far-infrared furnace, the film shrinks in the far-infrared furnace and is unsuitable for orientation control regardless of the heating residence time in the hot-air heating furnace .
- the polyimide film obtained by the heat treatment has polyimide molecules oriented in the MD direction.
- the molecular orientation axis angle (0) with respect to the film MD direction is not necessarily limited, but is preferably 15 ° ⁇ ⁇ ⁇ 15 ° in any part in the TD direction. If the molecular orientation axis angle 0 with respect to the film MD direction is out of the above range, the orientation may be insufficient, and the effect of suppressing dimensional change may not be manifested.
- the angle is 15 ° ⁇ 0 ⁇ 15 °, but the angle is 10 ° ⁇ 0 ⁇ 1
- the angle is more preferably in the range of 0 °, and most preferably 1 ° 5 ° ⁇ ⁇ ⁇ 5 °.
- the fact that 15 ° ⁇ 0 ⁇ 15 ° in any part in the TD direction means that at least five samples are taken at equal intervals so that both ends are included.
- the above molecular orientation axis angle means an angle between the reference axis and the orientation axis of the polyimide molecular chain.For example, when the molecular orientation axis angle e with respect to the film MD direction is 0 °, This means that the molecular orientation axis coincides with the film MD direction.
- the heat treatment also changes the linear expansion coefficient of the polyimide film obtained.
- the linear expansion coefficient (200 to 300 ° C.) of the polyimide film in the MD direction is (ppm / ° C.) If the linear expansion coefficient in the TD direction (2 0 0 ⁇ 3 0 0 ° C) was ⁇ 2 (ppm / ° C) , 2 ⁇ £ ⁇ ⁇ 1 0, and 1 3 ⁇ ⁇ 2 ⁇ 2 5 , and It is preferably within the range of 20 (aa2).
- the coefficient of linear expansion in the temperature range of 200 to 300 ° C is specified as follows.
- the polyimide film is made of an adhesive layer with excellent heat resistance (for example, using a resin with a glass transition temperature of 200 ° C or higher.
- the adhesive layer When used in combination with an adhesive layer, the adhesive layer is almost in a molten state above 300 ° C (the effect of expansion and contraction of the adhesive layer is almost negligible).
- the meltability of the adhesive layer is reduced (the effects of expansion and contraction of the adhesive layer cannot be ignored), and when the temperature further decreases and becomes lower than 200 ° C, the adhesive layer is almost fixed ( (Expansion / shrinkage behavior almost falls)), and the behavior in the range of 200 to 300 ° C is particularly important.
- the value of a 1 arrangement Nihi 2 is out of the above range, for example, may not be sufficiently eliminate the influence of the tension during the heat lamination one preparative step, there may be a suppression win effect dimensional change becomes smaller. Also, if the value of (i + flight 2) becomes the out-of-range, there is the orientation of the film thickness direction (Z axis direction) is changed greatly, not expressed effect of suppressing the dimensional change However, other physical properties may be reduced.
- thermoplastic polyimide contained in the adhesive layer of the adhesive film according to the present invention
- thermoplastic polyimide, thermoplastic polyamide imide, thermoplastic polyether imide, thermoplastic polyester imide, and the like are preferably used.
- thermoplastic polyester imido is particularly preferably used from the viewpoint of low moisture absorption properties.
- thermoplastic polyimide in the present invention is 150 to 300 °. It preferably has a glass transition temperature (T g) in the range of C. T g is a dynamic viscoelasticity measurement device (D M
- the polyamic acid that is a precursor of the thermoplastic polyimide is not particularly limited, and any known polyamic acid can be used.
- known raw materials, reaction conditions, and the like can be used (for example, see Examples described later).
- an inorganic or organic filler may be added. (Manufacture of adhesive film)
- the adhesive film used for producing the flexible metal-clad laminate according to the present invention can be obtained by providing an adhesive layer containing a thermoplastic polyimide on at least one surface of the insulating film.
- a method for producing the adhesive film a method in which an adhesive layer is formed on a polyimide film serving as a base film, a method in which the adhesive layer is formed into a sheet shape, and a method in which this is adhered to the above base film is preferably used. It may be illustrated.
- the former method is used, if the polyamide acid contained in the adhesive layer, which is a precursor of the thermoplastic polyimide, is completely imidized, the solubility in an organic solvent is reduced. Therefore, it may be difficult to provide the adhesive layer on the base film.
- a solution containing a polyamide acid which is a precursor of a thermoplastic polyimide it is preferable to prepare a solution containing a polyamide acid which is a precursor of a thermoplastic polyimide, apply the solution to a base film, and then imidize the solution. Is more preferred. At this time, either the thermal cure method or the chemical cure method can be used for imidization.
- thermoplastic polyimide 100 ° C
- the transition temperature is preferably set within the range of (transition temperature + 200 ° C), and is preferably within the range of (glass transition temperature of thermoplastic polyimide-50 ° C) to (glass transition temperature + 150 ° C). Les, more preferred to set.
- the higher the curing temperature the more easily the imidization occurs, so that the curing speed can be increased, which is preferable in terms of productivity. However, if it is too high, the thermoplastic polyimide may undergo thermal decomposition.
- the temperature of the cure is too low, it is difficult for the cure to proceed even in chemical cure, and the time required for the cure process is prolonged.
- the imidization time it is sufficient to take a sufficient time for the imidization and drying to be substantially completed, and it is not limited uniquely, but is generally about 1 to 600 seconds. It is set appropriately within the range. Further, for the purpose of improving the melt fluidity of the adhesive layer, the imidization ratio can be intentionally lowered and / or a solvent can be left.
- the tension applied during the imidization is preferably in the range of 1 1 ⁇ ⁇ / 111 to 15 3 ⁇ 4: ⁇ // 111, and in the range of 5 kg / m to 10 kg nom. It is particularly preferred to do so. If the tension is smaller than the above range, the film may be sagged at the time of transporting the film, which may cause a problem that the film cannot be uniformly wound. Conversely, if it is larger than the above range, the adhesive film will be heated to a high temperature under strong tension, so even if the core film is oriented in the MD direction, thermal stress will occur in the adhesive film and dimensional changes will occur. May have an effect.
- the method for casting and applying the polyamide acid solution to the base film is not particularly limited, and an existing method such as a die coater, a reverse coater, or a blade coater can be used.
- the polyamic acid solution may contain other materials such as a filler, for example, depending on the use.
- the thickness configuration of each layer of the heat-resistant adhesive film may be appropriately adjusted so as to have a total thickness according to the application. If necessary, various surface treatments such as corona treatment, plasma treatment, and coupling treatment may be performed on the core film surface before providing the adhesive layer.
- the flexible metal-clad laminate according to the present invention is obtained by bonding a metal foil to the adhesive film.
- the metal foil to be used is not particularly limited, the electronic device according to the present invention may be used for electronic devices.
- a metal-clad laminate for example, a foil made of copper or a copper alloy, stainless steel or an alloy thereof, nickel or a nickel alloy (including a 42 alloy), aluminum or an aluminum alloy can be used.
- a copper foil such as a rolled copper foil or an electrolytic copper foil is often used, but it can be preferably used in the present invention.
- the surface of these metal foils may be coated with a heat-resistant layer / heat-resistant layer or an adhesive layer.
- the thickness of the metal foil is not particularly limited, and may be any thickness as long as a sufficient function can be exhibited according to its use.
- a hot roll laminating device having a metal roll of at least one dimension or a double belt press
- Continuous processing by (DBP) can be used.
- DBP Continuous processing by
- a heat roll laminating device having at least one pair of metal rolls since the device configuration is simple and advantageous in terms of maintenance cost.
- the term "heat roll laminating apparatus having one or more metal rolls” as used herein may be any apparatus having a metal roll for heating and pressing a material, and the specific apparatus configuration is not particularly limited. Not something.
- the specific structure of the means for performing the above-mentioned heat lamination is not particularly limited, but in order to improve the appearance of the obtained laminate, a protective material is provided between the pressing surface and the metal foil. Is preferably arranged.
- the protective material is not particularly limited as long as it can withstand the heating temperature of the thermal laminating step, and is a heat-resistant plastic such as a non-thermoplastic polyimide film, a copper foil, an aluminum foil, and a US foil. Metal foil or the like can be suitably used.
- a non-thermoplastic polyimide film is more preferably used because of its excellent balance between heat resistance and reusability.
- the thickness is thin and laminating. It is preferable that the thickness of the thermoplastic polyimide film is 75 or more in order to not sufficiently fulfill the functions of buffering and protection during nate.
- This protective material does not necessarily have to be a single layer, but may have a multilayer structure of two or more layers having different characteristics.
- the method of heating the material to be laminated in the heat laminating means is not particularly limited.
- a heating method employing a conventionally known method capable of heating at a predetermined temperature such as a heat circulation method, a hot air heating method, or an induction heating method, is used. Means can be used.
- the method of pressurizing the material to be laminated in the heat laminating means is not particularly limited.
- a hydraulic system, a pneumatic system, a gap-to-gap system, etc. Pressurizing means employing a method can be used.
- the heating temperature in the heat laminating step is preferably a temperature equal to or higher than the glass transition temperature (T g) of the adhesive film + 50 ° C. More preferred.
- T g glass transition temperature
- the adhesive film and the metal foil can be favorably thermally laminated.
- the laminating speed can be increased to further improve the productivity.
- the laminating speed in the heat laminating step is preferably 0.5 m min or more, more preferably 1.0 m / min or more. When it is 0.5 m / min or more, sufficient thermal lamination can be performed, and when it is 1.0 m / min or more, productivity can be further improved.
- the lamination pressure is preferably in the range of 49-490 N / cm (5-50 kgf / c), and 98-294 N / cm (10-30 kgf / cm). Is more preferably within the range. Within this range, the three conditions of laminating temperature, laminating speed and laminating pressure can be improved, and the productivity can be further improved.
- the adhesive film tension in the laminating step is preferably from 0.01 to 4 N / cm, more preferably from 0.02 to 2.5 N / cm, particularly preferably from 0.05 to 1.5 N / cm. If the tension is lower than the above range, slack or meandering occurs when the laminate is conveyed, and it is difficult to obtain a flexible metal-clad laminate having a good appearance since the laminate is not uniformly fed to the heating roll. Conversely, if the ratio exceeds the above range, the influence of tension becomes so strong that control of the Tg and storage elastic modulus of the adhesive layer cannot be alleviated, and the dimensional stability may be poor.
- a heat laminating apparatus that continuously press-bonds the material to be laminated while heating it.
- a laminated material feeding means for feeding out the laminated material may be provided, or a laminated material winding means for winding the laminated material may be provided at a stage subsequent to the thermal laminating means.
- the specific configuration of the material to be fed out and the material to wind up the material to be laminated is not particularly limited.
- an adhesive film, a metal foil, or a laminate obtained can be wound up. Publicly known roll-shaped winding machine.
- a protection material winding means and a protection material feeding means for winding and feeding the protection material.
- These protective material winders If the protective material feeding means is provided, the protective material can be reused by winding up the once used protective material in the thermal laminating step and installing it again on the payout side. Further, when winding the protective material, an end position detecting means and a winding position correcting means may be provided in order to align both ends of the protective material. As a result, the ends of the protective material can be accurately wound and wound up, so that the efficiency of reuse can be increased.
- the specific structures of the protective material winding means, the protective material feeding means, the end position detecting means, and the winding position correcting means are not particularly limited, and various conventionally known devices may be used. Can be.
- the dimensional change rate before and after removing the metal foil, and before and after heating at 250 ° C. and 30 minutes after removing the metal foil are described. It is highly preferable that the total value of the dimensional change is in the range of 1.06 to +0.06 in both the MD and TD directions.
- the dimensional change rate before and after the removal of the metal foil is represented by a ratio of a difference between a predetermined dimension of the flexible metal-clad laminate before the etching step and a predetermined dimension after the etching step, and the predetermined dimension before the etching step. .
- the rate of dimensional change before and after heating is the difference between the predetermined dimension of the flexible metal-clad laminate after the etching step and the predetermined dimension after the heating step, and the predetermined dimension before the heating step (after the etching step). Expressed as a ratio.
- the dimensional change rate is out of this range, the dimensional change in the flexible metal-clad laminate after forming fine wiring and at the time of component mounting becomes large, and the dimensional change from the component mounting position at the design stage will increase. Will shift. As a result, the component to be mounted may not be connected well to the board. In other words, if the dimensional change rate is within the above range, it can be considered that there is no problem in mounting the components.
- the method of measuring the dimensional change rate is not particularly limited, and any conventionally known method can be used for a flexible metal-clad laminate as long as it is a method capable of measuring a reduction in dimension occurring before and after the etching or heating step. The method can also be used.
- the total value of the dimensional change rate of the flexible metal-clad laminate before and after removing the metal foil and the dimensional change rate before and after performing heating at 250 ° C. and 30 minutes after removing the metal foil are: ,
- the MD direction and the TD direction are both preferably in the range of 0.06 to +0.06.
- the specific conditions of the etching step when measuring the dimensional change rate are not particularly limited. That is, the etching conditions are different depending on the type of the metal foil, the shape of the pattern wiring to be formed, and the like. Therefore, the conditions of the etching step when measuring the dimensional change rate according to the present invention are any conventionally known. Such conditions may be used. Similarly, in the heating step, heating may be performed at 250 ° C. for 30 minutes, and specific conditions are not particularly limited.
- the flexible metal-clad laminate obtained by the manufacturing method according to the present invention can mount various miniaturized and high-density components by etching a metal foil to form a desired pattern wiring. It can be used as a flexible wiring board.
- the application of the present invention is not limited to this, and it goes without saying that a laminate including a metal foil can be used for various purposes.
- the evaluation method is as follows.
- the glass transition temperature was measured using a DMS 200 manufactured by Seiko Instruments Inc. at a heating rate of 3 ° CZ over a temperature range from room temperature to 400 ° C, and the inflection point of the storage modulus was measured. The glass transition temperature was taken.
- the molecular orientation axis angle ⁇ of the core film was measured using a microwave molecular orientation meter MOA210A manufactured by KS Systems.
- the definition of the molecular orientation axis angle ⁇ is as follows.
- the direction of molecular orientation in the film plane (the maximum direction of ⁇ , where ⁇ , is the dielectric constant of the sample) can be found as an angle value.
- a straight line indicating the orientation direction is defined as the “orientation axis” of the sample.
- the X axis is taken in the longitudinal direction (MD direction) of the center of the film, and the traveling direction when the polyamide acid is cast on the support is the positive direction.
- the angle between the positive direction of the X axis and the orientation axis obtained in the above-described measurement is defined as an orientation axis angle 0, and the orientation axis angle when the orientation axis is in the first quadrant and the third quadrant is positive. (0 ° ⁇ ⁇ 90 °), and the orientation axis angle when the orientation axis is in the second quadrant and the fourth quadrant is defined as negative (1 90 ° 0 ⁇ 0 °).
- the measurement of the direction axis angle was performed at the film at both ends, the center, and five points in the middle between the ends and the center in the TD direction.
- the coefficient of linear expansion of the core film was measured using a thermomechanical analyzer manufactured by Seiko Instruments Inc., and the product name was TMA (Thermomechanical Analyzer).
- the self-supporting green sheet (gel film) is peeled off, and then both ends of the sheet are fixed to a pin sheet that continuously conveys the sheet without loosening. After being conveyed and taken out of the lehr, the film was peeled off from the pins and wound up to give a 1.2-m-wide 18- ⁇ m polyimide film.
- the process of reducing the fixed-end distance at both ends so that the film was relaxed in the TD direction was completed before the film was introduced into the furnace, and the process of extending the fixed-end distance at both ends was performed in three furnaces (Fig. 4 See).
- Table 1 shows the ambient temperature and residence time of the hot air heating furnace (1 to 3 furnaces), the far infrared furnace, and the slow cooling furnace. Contraction rate expansion rate (also referred to as expansion rate) and obtained
- Contraction rate expansion rate (also referred to as expansion rate) and obtained
- the molecular orientation axis angles of the film are as shown in Table 2. One indicates a relaxed state of the film, and
- a film was obtained in the same manner as in Synthesis Example 1 except that the scaling ratio was changed as shown in Table 2.
- the molecular orientation axis angles of the obtained films are as shown in Table 2.
- a film was obtained in the same manner as in Synthesis Example 1 except that the scaling ratio and the heating conditions were changed as shown in Tables 1 and 2.
- the molecular orientation axis angles of the obtained film are as shown in Table 2.
- a film was obtained in the same manner as in Synthesis Example 1 except that the scaling conditions and heating conditions were changed as shown in Tables 1 and 2.
- the molecular orientation axis angles of the obtained film are as shown in Table 2.
- the self-supporting green sheet (gel film) is peeled off, and both ends of the sheet are fixed to a pin sheet that continuously conveys the sheet, and then conveyed to a hot air heating furnace, a far-infrared furnace, and an annealing furnace. Then, the film was peeled off from the pins after being taken out of the annealing furnace, and wound up to obtain an 18 ⁇ m polyimide film having a width of about 0.5 m.
- Table 3 shows the ambient temperature and residence time of the heating furnace (1 to 4 furnaces), far-infrared furnace, and slow cooling furnace.
- Table 4 shows the scaling ratio and the molecular orientation axis angle of the obtained film.
- a film was obtained in the same manner as in Synthesis Example 5 except that the scaling ratio and heating conditions were changed as shown in Tables 3 and 4.
- the molecular orientation axis angles of the obtained films are as shown in Table 4.
- a film was obtained in the same manner as in Synthesis Example 5, except that the scaling ratio and the heating conditions were changed as shown in Tables 3 and 4.
- the molecular orientation axis angles of the obtained films are as shown in Table 4.
- the obtained polyamic acid solution was cast on a 25 ⁇ ⁇ ⁇ ⁇ film (Therapy ⁇ ⁇ , manufactured by Toyo Metallizing Co., Ltd.) so that the final thickness became 20 ⁇ m. Drying was performed for 5 minutes. After the dried self-supporting film was peeled from the PET, it was fixed on a metal pin frame, and then at 150 ° C for 5 minutes. Drying was performed at 200 ° C. for 5 minutes, at 250 ° C. for 5 minutes, and at 350 ° C. for 5 minutes. The glass transition temperature of the obtained single-layer sheet was 240 ° C.
- the obtained polyamic acid solution was cast on a 25 Atm PET film (Therapy HP, manufactured by Toyo Metallizing Co., Ltd.) so that the final thickness became 20 ⁇ m, and the temperature was adjusted to 120 ° C for 5 minutes. Drying was performed. After peeling the dried self-supporting film from the PET, it is fixed on a metal pin frame, and then at 150 ° C for 5 minutes, at 200 ° C for 5 minutes, at 250 ° C for 5 minutes, Drying was performed at 350 ° C for 5 minutes to obtain a single-layer sheet.
- the glass transition temperature of this thermoplastic polyimide was 190 ° C.
- the polyamic acid solution obtained in Synthesis Example 8 had a solid content of 10% by weight. After dilution with DMF until / 0, both surfaces of Poryimi de film obtained in Synthesis Example 1, the polyamic de acid so that the final single-sided thickness of the thermoplastic polyimide layer (adhesive layer) is 4 m After the application, heating was performed at 140 ° C. for 1 minute. Then, pass through a far infrared heater furnace at an ambient temperature of 390 ° C for 20 seconds. Heat imidization was performed by applying a tension of 8 kg Zm to obtain an adhesive film.
- Example 2 The same operation as in Example 1 was performed except that the polyimide film obtained in Synthesis Example 2 was used instead of the polyimide film obtained in Synthesis Example 1, and the adhesive film and the flexible metal-clad laminate were used. Was prepared.
- Example 2 The same operation as in Example 1 was performed, except that the polyimide film obtained in Synthesis Example 3 was used instead of the polyimide film obtained in Synthesis Example 1, and the adhesive film and the flexible metal-clad laminate were used. Was prepared.
- Example 5 The same operation as in Example 1 was performed, except that the polyimide film obtained in Synthesis Example 5 was used instead of the polyimide film obtained in Synthesis Example 1, and the adhesive film and the flexible metal-clad laminate were used. Was prepared.
- Example 6 The same operation as in Example 1 was performed, except that the polyimide film obtained in Synthesis Example 6 was used instead of the polyimide film obtained in Synthesis Example 1, and the adhesive film and the flexible metal-clad laminate were used.
- Example 6 The same operation as in Example 1 was performed, except that the polyimide film obtained in Synthesis Example 6 was used instead of the polyimide film obtained in Synthesis Example 1, and the adhesive film and the flexible metal-clad laminate were used. was prepared. (Example 6)
- both sides of the polyimide film obtained in Synthesis Example 1 are coated with thermoplastic polyimide.
- Polyamide acid was applied so that the final one-sided thickness of the adhesive layer (adhesive layer) was 4 ⁇ m, and heating was performed at 140 ° C. for 1 minute.
- the film was passed through a far-infrared heater at an atmosphere temperature of 330 ° C. for 20 seconds to perform heating imidization to obtain an adhesive film.
- Example 6 The same operation as in Example 6 was performed, except that the polyimide film obtained in Synthesis Example 2 was used instead of the polyimide film obtained in Synthesis Example 1, to obtain a flexible metal-clad laminate similar to the adhesive film. A plate was made.
- Example 6 The same operation as in Example 6 was performed, except that the polyimide film obtained in Synthesis Example 3 was used instead of the polyimide film obtained in Synthesis Example 1, to obtain a flexible metal-clad laminate similar to the adhesive film. A plate was made.
- Example 1 The same operation as in Example 1 was performed, except that the polyimide film obtained in Synthesis Example 7 was used instead of the polyimide film obtained in Synthesis Example 1, to obtain a flexible metal-clad laminate similar to the adhesive film. A plate was made. (Comparative Example 1)
- An adhesive film and a flexible metal-clad laminate were prepared in the same manner as in Example 1, except that the polyimide film obtained in Synthesis Example 4 was used instead of the polyimide film obtained in Synthesis Example 1. did.
- An adhesive film and a flexible metal-clad laminate were prepared in the same manner as in Example 6, except that the polyimide film obtained in Synthesis Example 4 was used instead of the polyimide film obtained in Synthesis Example 1. did.
- thermoplastic polyimide layer is formed on both sides of the polyimide film obtained in Synthesis Example 4.
- Polyamide acid was applied so that the final single-sided thickness of the (adhesive layer) was 4 m, and heating was performed at 140 ° C for 1 minute.
- the four edges were fixed to a pin frame, and the film was heated for 20 seconds in a far infrared heater at an ambient temperature of 330 ° C. Then, a sheet-like adhesive film was obtained.
- Table 5 shows the results of evaluating the characteristics of the flexible metal-clad laminates obtained in each of the examples, comparative examples, and reference examples. Atmosphere temperature (° c)
- Synthesis example 1 177 324 450 570 520, 460, 410, 350, 290, 240 Synthesis example 2 177 324 450 570 520, 460, 410, 350, 290, 240 Synthesis example 3 1 80 330 450 570 520, 460, 410, 350, 290, 240 Synthesis example 4 350 400 450 570 520, 460, 410, 350, 290, 240 Residence time (sec) 30 30 20 60 40
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Adhesive Tapes (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Description
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JP2005516997A JP4509032B2 (ja) | 2004-01-13 | 2004-12-28 | 寸法安定性を向上させたフレキシブル金属張積層板の製造方法 |
KR1020067013170A KR101195719B1 (ko) | 2004-01-13 | 2004-12-28 | 접착 필름 및 이것으로부터 얻어지는 치수 안정성을 향상시킨 연성 금속장 적층판, 및 그의 제조 방법 |
US10/585,141 US7951251B2 (en) | 2004-01-13 | 2004-12-28 | Adhesive film, flexible metal-clad laminate including the same with improved dimensional stability, and production method therefor |
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JP2007091947A (ja) * | 2005-09-29 | 2007-04-12 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板。 |
JP2012068500A (ja) * | 2010-09-24 | 2012-04-05 | Dainippon Printing Co Ltd | 立体画像表示用光学部材、及びそれを用いた液晶表示装置 |
JP2012181222A (ja) * | 2011-02-28 | 2012-09-20 | Dainippon Printing Co Ltd | 立体画像表示用柱状レンズシートの製造方法 |
JP2013067810A (ja) * | 2012-11-30 | 2013-04-18 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板 |
JP2013079385A (ja) * | 2012-11-30 | 2013-05-02 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板 |
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CN101232995B (zh) * | 2005-08-04 | 2012-09-05 | 株式会社钟化 | 覆金属聚酰亚胺膜 |
KR101282170B1 (ko) * | 2010-10-19 | 2013-07-04 | 에스케이이노베이션 주식회사 | 후막 폴리이미드 금속박 적층체 |
JP6337825B2 (ja) * | 2015-04-21 | 2018-06-06 | 住友金属鉱山株式会社 | ポリイミドフィルムの良否判定方法、並びにそのポリイミドフィルムを用いた銅張積層板及びフレキシブル配線板の製造方法 |
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JP2007091947A (ja) * | 2005-09-29 | 2007-04-12 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板。 |
JP2012068500A (ja) * | 2010-09-24 | 2012-04-05 | Dainippon Printing Co Ltd | 立体画像表示用光学部材、及びそれを用いた液晶表示装置 |
JP2012181222A (ja) * | 2011-02-28 | 2012-09-20 | Dainippon Printing Co Ltd | 立体画像表示用柱状レンズシートの製造方法 |
JP2013067810A (ja) * | 2012-11-30 | 2013-04-18 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板 |
JP2013079385A (ja) * | 2012-11-30 | 2013-05-02 | Kaneka Corp | 等方的な接着フィルムおよびその製造方法、接着フィルムを用いたフレキシブル金属積層板 |
Also Published As
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US7951251B2 (en) | 2011-05-31 |
KR20060120228A (ko) | 2006-11-24 |
CN100522603C (zh) | 2009-08-05 |
KR101195719B1 (ko) | 2012-10-29 |
JP4509032B2 (ja) | 2010-07-21 |
TWI354624B (en) | 2011-12-21 |
JPWO2005068193A1 (ja) | 2007-12-27 |
CN1902049A (zh) | 2007-01-24 |
US20080050586A1 (en) | 2008-02-28 |
TW200540013A (en) | 2005-12-16 |
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