WO2004087401A1 - 延伸フィルムおよびその製造方法 - Google Patents
延伸フィルムおよびその製造方法 Download PDFInfo
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- WO2004087401A1 WO2004087401A1 PCT/JP2004/004290 JP2004004290W WO2004087401A1 WO 2004087401 A1 WO2004087401 A1 WO 2004087401A1 JP 2004004290 W JP2004004290 W JP 2004004290W WO 2004087401 A1 WO2004087401 A1 WO 2004087401A1
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- Prior art keywords
- film
- layer
- methyl
- pentene
- stretched film
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/91—Product with molecular orientation
-
- 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]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31909—Next to second addition polymer from unsaturated monomers
- Y10T428/31913—Monoolefin polymer
-
- 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]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a highly heat-resistant film having excellent release properties and a method for producing the same. More specifically, the present invention relates to a 4-methyl-1-ene useful as a release film. The present invention relates to a 4-methyl-11-pentene copolymer film comprising ethylene or a-olefin having 3 to 20 carbon atoms, and a method for producing the same. 2. Description of the Related Art In recent years, with the rapid progress of electronic devices, as the degree of integration of ICs has increased, printed wiring boards have been heavily used in order to respond to demands for higher precision, higher density, and higher reliability. I have.
- the printed circuit board includes a single-sided printed circuit board, a double-sided printed circuit board, a multilayer printed circuit board, and a flexible printed circuit board.
- a multilayer printed circuit board (hereinafter referred to as “ML B”) is characterized in that an insulating layer is integrated in the middle of three or more layers of conductors, and any conductor layer can be connected to any electronic layer mounted on the conductor. The field of application of) is wide.
- This MLB consists of a pair of single-sided copper-clad laminates or a pair of double-sided copper-clad laminates on both sides, with one or more inner-layer circuit boards inside a pre-preda (epoxy resin, etc.). They are stacked alternately, sandwiched by jigs, and hot-pressed with a hot plate press through a cushion material to cure the pre-predator to form a strongly integrated laminate, drilling, and drilling through holes It is formed by etching the surface after plating.
- a pre-preda epoxy resin, etc.
- a release film is usually used between the copper-clad laminate (exterior plate) and the jig.
- This release film 4-methyl-1- ⁇ High heat-resistant resin that does not melt in the heat and pressure process is used, such as ethylene copolymer, polytetrafluoroethylene, acetate, polyester, and polypropylene.
- the surface of the copper foil of the copper-clad laminate is oxidized in order to enhance the adhesion to the epoxy resin, or the surface is roughened by so-called blackened copper foil, which is roughened by etching with acid. Copper foil is often used.
- JP-A-3-735888 proposes that a film having a higher OJI property be used as a release film by uniaxially stretching a 4_methyl_1-pentene copolymer film. Have been. However, the 4-methyl-11-pentene copolymer film is not sufficient in productivity and draw ratio, and the copper foil whose surface is roughened, such as blackening and blackening of the film There is a problem in releasability from the surface.
- Japanese Unexamined Patent Publication No. 2002-225207 discloses that, when a multilayer film composed of a 4-methyl-11-pentene copolymer and polyethylene or polypropylene is stretched, stretching unevenness and tearing during stretching are small, and It is stated that a stretched film suitable for a release film for production of UML with high U properties was obtained. However, if the temperature during hot pressing is high during ML manufacturing, the release film cuts into the through hole and the film is deformed, and there is a problem that the flat surface cannot be maintained after release.
- Japanese Patent Application Laid-Open No. 2003-17772 discloses that a multilayer film composed of a 4-methyl-11-pentene copolymer and polyethylene or polypropylene to which an inorganic filler is added is used for producing a rigid high-level MLB. It is stated that the film is suitable for the release film.
- Japanese Patent Application Laid-Open No. 6-134948 discloses that, in a specific thickness range, a center layer is a 4-methyl-1-pentene resin containing a heat-resistant silicone, and a polypropylene resin is laminated on both sides thereof. It describes a technique for peeling off an axially oriented multilayer film to produce a polypropylene film. However, this technique is intended to produce a thin polypropylene suitable for use in a capacitor, and does not disclose a 4-methyl-1-ethylene resin film having a good release property suitable for a release film. .
- a biaxially oriented film of 4-methyl-11-pentene resin obtained simultaneously with a polypropylene film by this technique has a heat shrinkage of 20% or more, a small thickness unevenness, and a good strength I.
- the surface is too rough to be used as a release film because it is too thin to be used as a release film, and a broken or broken film remains on the SIM surface. There is a problem with the mold releasability from the surface of the copper foil that has been treated.
- the invention is 4-methyl one 1 one-pentene 8 0 mole 0/0 or more with 4-methyl-_ 1 one-pentene with ethylene or co with other ⁇ - old olefins of carbon atoms 3-2 0
- a film consisting of a polymer and having at least one outermost layer with at least one layer ( ⁇ ) that is substantially free of wax or silicone.
- the copper foil surface is roughened and peeled off when heated.
- a stretched film having an area of 50% or more is provided.
- a layer comprising a copolymer of 4 one-methyl 1-pentene 8 0 mole 0/0 or more with 4-methyl-one 1 over pentene with ethylene or carbon atoms 3-2 0 other ⁇ - Orefuin ( Iii) is a film having at least one outermost layer, wherein the stretched film has a heat shrinkage of 20% or more in the stretching direction.
- a layer comprising a copolymer obtained from 4-methyl-1-pentene having at least 80 mol% of 4-methyl-11-pentene and ethylene or another ⁇ -olefin having 3 to 20 carbon atoms ( ⁇ ) and a multilayer film comprising a layer ( ⁇ ) made of another thermoplastic resin laminated thereon in contact with it, and then stretching the multilayer film, and then separating the layers ( ⁇ ) and ( ⁇ ) from each other.
- a finolem in which one outermost layer is a layer ( ⁇ ) after peeling.
- the peel strength between the layers ( ⁇ ) and ( ⁇ ) is 500 g / 15 mm or less (peeling at 23 ° C. at a speed of 300 mm / min.
- the film after the peeling which is a multilayer film that can be peeled off by the method, is provided.
- the present invention also relates to 4-methyl-1-pentene having at least 80 monole% of 4-methyl-1-pentene and ethylene or other ⁇ -olefin having 3 to 20 carbon atoms.
- At least one outermost layer comprising a layer ( ⁇ ) composed of a copolymer of 4-methyl-11-pentene of the present invention and ethylene or another ⁇ -olefin having 3 to 20 carbon atoms is used.
- the film is substantially free of wax and silicone and has a peel area of 50% or more from the surface of the copper foil whose surface has been roughened or has a heat shrinkage of 2 in the stretching direction.
- a layer ( ⁇ ) made of a copolymer obtained from 4-methyl-11-pentene and ethylene or other ⁇ -olefins having 3 to 20 carbon atoms, and another thermoplastic resin laminated in contact therewith.
- a film obtained by stretching a multilayer film containing a layer ( ⁇ ) composed of the following ( ⁇ ) and ( ⁇ ) and peeling between the layers ( ⁇ ) and ( ⁇ ), wherein at least one outermost layer is a layer ( ⁇ ) after peeling An excellent method for producing the film will be described.
- 4-methyl-11-pentene constituting a layer ( ⁇ ) comprising a copolymer obtained from 4-methyl-11-pentene of the present invention and ethylene or another ⁇ -olefin having 3 to 20 carbon atoms.
- the copolymer (a) comprises 4-methyl-1-pentene, ethylene other than 4-methyl-1-pentene, or ⁇ of 3 to 20, preferably 7 to 20, more preferably 8 to 20 carbon atoms.
- —It is a copolymer with Olefin.
- ethylene other than 4-methyl-1-pentene or ⁇ -olefin having 3 to 20 carbon atoms includes, for example, ethylene, propylene, 1-butene, 1-hexene, 1-heptene, 1-otaten, and 1-decene. , 1-dodecene, 1-tetrade Sen, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-eicosene, etc., preferably 1-decene, 1-dedecene, 1-tetradecene, 1-hexadecene, 11-heptadecene, 1-octadecene. is there.
- ⁇ -olefins other than 4-methyl-1-pentene can be used alone or in combination of two or more. Among them, the rigidity and elastic modulus are good. Thus, 1-decene, 1-dedecene, or 1-tetradecene is preferred.
- the 4-methyl-1-pentene copolymer (a) becomes a film. Excellent moldability and rigidity.
- the 4-methyl-1-pentene copolymer (a) has a melt flow rate (MFR) measured under the conditions of a load of 5. Ok g and a temperature of 260 ° C according to ASTM D 1238. g. in the range of 10 minutes, preferably in the range of 1 to 150 g / 10 minutes.
- MFR melt flow rate
- the 4-methyl-11-pentene copolymer (a) has excellent film moldability and excellent mechanical strength characteristics.
- Such a 4-methyl-11-pentene copolymer (a) can be produced by a conventionally known method. For example, as described in JP-A-59-206418, the presence of a catalyst It can be obtained by polymerizing 4-methyl-11-pentene and the above ⁇ -olefin.
- the 4-methyl-11-pentene copolymer (a) may contain, for example, a heat-resistant stabilizer, a weather-resistant stabilizer, a hydrochloric acid absorbent, a copper-corrosion inhibitor, and an anti-static agent within a range that does not impair the purpose of this effort.
- Conventional ⁇ which is usually blended with polyolefins!
- Additives can be blended. Specific examples of the additives include the following.
- phenolic antioxidants examples include 2,6-di-tert-butynole-tarezol and stearyl (3,3-dimethyl-4-hydroxybenzyl) thio.
- Phenols such as glycolate (4,4, butylidenebis) (2_ tert-butyl-5-methylphenol) oligocarbonate (eg, degree of polymerization 2, 3, 4, 5, 6, 7, 8, 9, 10, etc.) And polyhydric phenol carbonate oligoesters.
- Examples of the zeo-based antioxidant include dialkylthiodipropionate.
- Examples of the phosphorus antioxidant include triphenyl phosphite.
- M represents Mg, Ca or Zn
- A represents an anion other than a hydroxyl group
- x, y and z are positive numbers
- a is 0 or a positive number
- it can be added as a hydrochloric acid absorbent.
- Examples of the light stabilizer include 2-hydroxy-1-methoxybenzophenone.
- a lubricant such as calcium stearate can also be used.
- Such additives can be used in an amount of usually 0.0001 to 10 parts by mass based on 100 parts by mass of the 4-methyl-1-pentene copolymer (a).
- the organic compound having a composition other than the 4-methyl-11-pentene copolymer (a) contains no impurities.
- the content is preferably 5% by mass or less, preferably 0.1% by mass or less, and more preferably 0.05% by mass or less.
- wax and silicon which are easy to precipitate are not substantially contained.
- substantially free means that no positively added, 0-0 0 less than 1 wt%, preferably from 0. 000:. A ⁇ 0.1 less than 01 mass 0/0!.
- thermoplastic resin layer (B) of the present invention ethylene or C3-C3 A resin containing 20 ⁇ -olefins, such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, and 1-otaten, and the single weight of ⁇ -olefin with 3 to 8 carbon atoms.
- ⁇ -olefins such as ethylene, propylene, 1-butene, 1-pentene, 1-hexene, and 1-otaten
- coalesce or copolymers of these olefins or other monomers are examples of these, the strength at the time of peeling the layer ( ⁇ ) and the layer ( ⁇ ) is low, and the stretching ratio can be increased.
- Polypropylene (b1) or polyethylene (b2) which has a large heat shrinkage and includes a copolymer, is preferred.
- Polypropylene (b1) is preferred because stretching conditions can be set widely and stretching is easy.
- the polypropylene (bl) used in the present invention is a homopolymer of propylene, or at least one selected from propylene and ⁇ -olefin having 4 to 20, preferably 4 to 10 carbon atoms other than ethylene or propylene. It is a copolymer with species of olefin.
- ⁇ -olefins having 4 to 20 carbon atoms other than ethylene or propylene include, for example, ethylene, 1-butene, 1-pentene, 1-hexene, 4-methylinolate 1-pentene, 1-octene, 1-decene And mixtures thereof.
- polypropylene (bl) the molar ratio of propylene to ethylene or ⁇ -olefin having 4 to 20 carbon atoms other than propylene (propylene / (ethylene or ⁇ -lean) (excluding propylene)) is ⁇ —Although it depends on the type of olefin, it is generally 100/0 to 90/10, preferably 100 ⁇ 0 to 95/5.
- melt flow rate (MFR) at 0.16 kg load is from 0.1 to: L 00 g / 10 min, preferably 0.5 to 50 g / l 0 min and density is 0.900 It is desirable to be in the range of more than gZcm 3 , preferably more than 0.900 gZ cm 3 and not more than 0.920 g / cm 3 .
- the polyethylene (b2) used in the present invention is a homopolymer of ethylene or a copolymer of ethylene and ⁇ -olefin having 3 to 20 carbon atoms.
- Examples of "-olefins having 3 to 20 carbon atoms include propylene, 1-butene, 11-pentene, 1-hexene, 4-methyl-11-pentene, 11-otaten, 1-decene and mixtures thereof. Of which 3 to 10 carbon atoms It is particularly preferable to use ⁇ -olefin.
- the molar ratio of ethylene to ⁇ -olefin with 3 to 20 carbon atoms varies depending on the type of CK-olefin, but generally 100/0 to 99Zl, Preferably it is 1000 to 99.5 / 0.5.
- Polyethylene (b 2) has a melt flow rate (MFR) force at 190 ° C and 2.16 kg load of 0.01 to: LOO gZl O content, preferably 0.05 to 50 g / l
- Such polypropylene (bl) and polyethylene (b2) can be produced by a conventionally known method by polymerizing ethylene or propylene with ⁇ -olefin in the presence of a catalyst.
- polypropylene (bl) and polyethylene (b 2) may be any other component units other than the component units derived from the core olefin, such as the component units derived from a gen compound, as long as their properties are not impaired. May be included.
- the content of diene component is usually 0-1 mol 0/0, preferably from 0 to 0.5 mol 0/0.
- the multilayer sheet suitable for producing the stretched film of the present invention is, for example, in the case of three layers, a layer (A) composed of the 4-methyl-1-pentene copolymer ( a ) and the polypropylene (bl) or the polypropylene (bl). (B) / (A) / (B), which comprises a layer (B) made of polyethylene (b2), and the layer (B) is provided on both sides of the layer (A). It is a three-layer sheet having
- an adhesive resin layer (C) may be interposed in the multilayer sheet before peeling as necessary.
- a multilayer sheet having a configuration of (B) / (A) / (C) / (D) / (C) / (A) / (B) can be mentioned.
- the layer (C) is an adhesive resin layer
- the layer (D) is a thermoplastic resin having a melting point of 80 to 250 ° C, preferably 120 to 250 ° C, measured by DSC (differential scanning calorimetry). Good enough, poly Known resins such as ethylene, polypropylene, polyamide, and polyethylene terephthalate can be used.
- the adhesive resin layer (C) used in the present invention includes a layer (A) composed of a 4-methyl-111-ene copolymer (a) and a melting point of 8 which is measured by DSC (differential scanning calorimetry). 0-250 ° C, preferably 120-250.
- the adhesive resin (C) preferably used in the present invention is not particularly limited as long as it can bond to the thermoplastic resin layer (D) of C.
- Examples of the adhesive resin (C) used in the present invention include a poly-4-methyl-1-pentene combat polymer Or an adhesive resin composition comprising a copolymer of 4-methyl-11-pentene and ethylene or ⁇ -olefin having 3 to 20 carbon atoms other than 4-methyl-11-pentene, and poly-1-butene. No.
- the layer ( ⁇ ) and the layer (D) can be firmly bonded.
- a three-layer sheet having the configuration of ( ⁇ ) / (A) / ( ⁇ ) is preferable because the production can be efficiently performed with simple equipment.
- a method for producing such a multilayer sheet for example, a method of co-extrusion molding a 4-methinolay 1-pentene copolymer ( a ) with a polypropylene (b 1) or polyethylene (b 2), A method of press-forming a sheet or the like made from each resin by press molding, extrusion, etc. into a laminated sheet can be mentioned.In the case of the above three-layer sheet, co-extrusion molding is particularly effective. This is preferable.
- a three-layer sheet in which the layer (B) is laminated on both sides of the layer (A) is obtained.
- the seven-layer sheet can be produced by the same method. Further, by making the layer (B) of the multilayer sheet having the above structure polypropylene (bl) or polyethylene (b 2), between the layers (A) and (B) in the multilayer sheet (for example, in the case of three layers (B ) / (A) or (A) / (B), and even in the case of 7 layers, (B) / (A) or (A) / (B)).
- the thickness can be reduced to 500 g Zl 5 mm or less, and the ⁇ I of a film obtained by force-peeling becomes good.
- the obtained multilayer sheet can be stretched by a conventionally known method such as a tubular method or a tenter method.
- a conventionally known method such as a tubular method or a tenter method.
- the heating temperature is between 120 and 210 ° C, preferably between 130 and 180 ° C, and the draw ratio is usually between 5 and 20 times, preferably between 6 and 15 times. More preferably, it is 7 to 10 times.
- the stretching method a conventionally known method can be appropriately employed as described above.
- uniaxial stretching is preferred because the thickness of the stretched film is small and the stretching ratio can be increased. ,.
- annealing treatment may be performed at a temperature lower than the melting point of the resin in order to prevent natural shrinkage during storage of the stretched film.
- the thickness of the multilayer film can be adjusted based on the thickness of the film after peeling and the draw ratio, and is not particularly limited, but is usually 10 ⁇ m to 10 mm, preferably 10 ⁇ ! ⁇ 8 mm, more preferably 1 ⁇ ! ⁇ 4 mm. It should be noted that sheet forming and stretching can be performed continuously with one apparatus, and such apparatuses are commercially available. [Film of the present invention]
- the film of the present invention is obtained by stretching a multilayer sheet including the above-mentioned layer (A) and a layer (B) laminated thereon and peeling off the layers (A) and (B). And a film in which at least one outermost layer is the layer (A) after peeling.
- the film of the present invention after peeling is a single-layer film of layer (A) or a multilayer film containing layer (A).
- one side of the outermost layer is the layer (A) or
- the other outermost layer is ethylene or ⁇ having 3 to 20 carbon atoms. It is preferably a layer composed of an olefin-containing resin. Among these, good «and reusability by re-forming the used film Therefore, it is preferable that the film is a single-layer film of the layer (A).
- the film of the present invention after peeling has a small thickness of the layer (A), the film has low strength to be used as a release film, and the film which is torn at the time of peeling tends to remain on the peeling surface due to the film being torn at the time of peeling.
- the film is difficult to be deformed during release, so the peeling load increases and in the worst case, it leads to deformation of MLB products.
- the thickness of the film after peeling of the present invention is suitably from 10 to 500 Atm, preferably from 20 to 300 jum, and more preferably from 25 to 20 O / zm.
- the film of the present invention can be obtained by producing the film of the present invention as described above. According to the above-mentioned method, the film of the present invention obtained by peeling the multilayer sheet after stretching is obtained having a heat shrinkage of 20 to 40%. In addition, this film is characterized in that the area of the film peeled off from the copper foil surface is 50% or more when the film is hot-pressed on the roughened copper foil surface. By optimizing the conditions, it is preferable as a release film.
- the heat shrinkage is 25 to 35%, more preferably 26 to 30%, and it has an elastic modulus of 6 OMPa or more.
- a film having excellent properties of peeling area force from the copper foil surface of the film of 60 to 100%, preferably 65 to 100%, more preferably 70 to L00% can be obtained.
- the heat shrinkage ratio is a ratio of the shrinkage of the film to the original length before the calo-heat when the film of the present invention is heated and shrunk.
- the length L1 in the stretching direction of the film measured in Step 1 and the length L2 corresponding to the above L1 measured in 30 minutes after standing in an atmosphere at a temperature of 180 ° C for 30 minutes and then cooling down after 30 minutes Is measured and is calculated by the following equation (1).
- the peeling area means that the film of the present invention is placed on a copper foil having a roughened surface, sandwiched between a cushion material and a metal plate, and heated at 185 ° C. and 36 kg / cm 2 for 30 minutes by a press. After being cooled to 25 ° C, the film can be peeled off by holding the film end face and peeling it continuously at a speed of 10 OmmZ at a peel angle of 90 degrees between the roughened copper foil surface and the film. Area for the purpose of the present invention Is better.
- the film of the present invention after peeling has high rigidity and high heat resistance, and is used as various packaging films for foods, pharmaceuticals, freshness preserving applications, and the like.
- the film is suitable as a release film because of its releasability from a copper foil surface whose surface has been roughened, such as a blackened copper foil surface, which is suitable for MLB production.
- Copolymer of 4-methyl-1-pentene and 1-decene In this copolymer, 4-methyl-1-pentene content: 97mo 1%, 1-decene content: 3mo 1%.
- the copper foil surface was obtained by etching treatment with a hydrogen peroxide Z-sulfuric acid type etchant (trade name: Eva Chemneo Brown, manufactured by Ebara Densan Co., Ltd.).
- the surface of the copper foil whose surface was roughened was measured using a non-contact three-dimensional micro surface shape observation system NT-2000 (WY KO Ne ring).
- the surface roughness was Ra: 0.27 to 0.34 / m, t: 2.01 to 2.22 in.
- 4-methyl-11-pentene copolymer (a) is used for the intermediate layer at a cylinder temperature of 290 ° C
- the outer layer polypropylene (b1) is used for a cylinder temperature of 240 ° C. C and co-extruded at a die temperature of 270 ° C.
- An unstretched sheet having a polypropylene layer of 50 ⁇ and a poly-1-methyl-1-pentene layer of 200 ⁇ m in thickness was obtained.
- the obtained film was cut at a length of 2 cm in a vertical direction (TD direction) of 15 cm in the stretching direction (MD direction), and the length L1 of the film in the MD direction was measured at room temperature.
- TD direction vertical direction
- MD direction stretching direction
- the heat shrinkage was calculated by the equation (1).
- Heat shrinkage (0/0) (LI- L2) L1 X 100 (1) (wherein, L1: stretching direction before heating Length cm, L 2: Length in the stretching direction after heating cm)
- Example 3 The same operation as in Example 1 was performed except that only the stretching ratio was set to 6. The results are shown in Table 1. Example 3
- Example 4 The same operation as in Example 1 was performed except that only the stretching ratio was set to 7 times. The results are shown in Table 1.
- Example 5 The same operation as in Example 1 was performed except that only the stretching ratio was set to 8. The results are shown in Table 1. Example 5
- Example 1 The same operation as in Example 1 was performed except that only the stretching ratio was 4.3 times. The results are shown in Table 1. Comparative Example 1
- Comparative Example 3 The same operation as in Comparative Example 1 was carried out except that a 200- ⁇ m-thick single-layer sheet of 4-methyl-11-pentene copolymer without the polypropylene layer and the adhesive resin layer was stretched 4-fold. The results are shown in Table 1. Comparative Example 3
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- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020047011695A KR100591633B1 (ko) | 2003-03-28 | 2004-03-26 | 연신 필름 및 그의 제조 방법 |
US10/521,189 US7314905B2 (en) | 2003-03-28 | 2004-03-26 | Drawn film and process for producing the same |
JP2005504204A JP4489699B2 (ja) | 2003-03-28 | 2004-03-26 | 延伸フィルムおよびその製造方法 |
EP20040723740 EP1616689B1 (en) | 2003-03-28 | 2004-03-26 | Stretched film and method for production thereof |
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JP2003-92796 | 2003-03-28 | ||
JP2003092796 | 2003-03-28 |
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WO2004087401A1 true WO2004087401A1 (ja) | 2004-10-14 |
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PCT/JP2004/004290 WO2004087401A1 (ja) | 2003-03-28 | 2004-03-26 | 延伸フィルムおよびその製造方法 |
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Country | Link |
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US (1) | US7314905B2 (ja) |
EP (1) | EP1616689B1 (ja) |
JP (1) | JP4489699B2 (ja) |
KR (1) | KR100591633B1 (ja) |
CN (1) | CN100464966C (ja) |
WO (1) | WO2004087401A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015037426A1 (ja) * | 2013-09-10 | 2015-03-19 | 旭化成ケミカルズ株式会社 | 離型フィルム、成型体の製造方法、半導体部品及びリフレクター部品 |
JP2015063079A (ja) * | 2013-09-25 | 2015-04-09 | 三井化学株式会社 | 積層体 |
WO2017199764A1 (ja) * | 2016-05-16 | 2017-11-23 | 三井化学東セロ株式会社 | 多層プリント配線板の製造に好適な離型フィルム |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5302508B2 (ja) * | 2004-11-17 | 2013-10-02 | 三井化学株式会社 | 固体状チタン触媒成分、オレフィン重合用触媒、オレフィン系重合体の製造方法、フィルム、および離型フィルム |
CN101479327B (zh) * | 2006-06-27 | 2012-05-30 | 三井化学株式会社 | 膜及脱模膜 |
KR101567269B1 (ko) | 2011-12-27 | 2015-11-06 | 미쓰이 가가쿠 가부시키가이샤 | 4-메틸-1-펜텐 (공)중합체 조성물, 해당 조성물로 이루어지는 필름 및 중공 성형체 |
US20180244024A1 (en) | 2017-02-24 | 2018-08-30 | Toray Plastics (America), Inc. | Monoaxially or biaxially oriented polyolefin release film |
US20210229408A1 (en) | 2020-01-29 | 2021-07-29 | Toray Plastics (America), Inc. | Oriented polyolefin release films |
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- 2004-03-26 CN CNB2004800000133A patent/CN100464966C/zh not_active Expired - Lifetime
- 2004-03-26 KR KR1020047011695A patent/KR100591633B1/ko active IP Right Grant
- 2004-03-26 US US10/521,189 patent/US7314905B2/en not_active Expired - Lifetime
- 2004-03-26 EP EP20040723740 patent/EP1616689B1/en not_active Expired - Lifetime
- 2004-03-26 WO PCT/JP2004/004290 patent/WO2004087401A1/ja active Application Filing
- 2004-03-26 JP JP2005504204A patent/JP4489699B2/ja not_active Expired - Lifetime
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JPS60206620A (ja) * | 1984-03-31 | 1985-10-18 | Honshu Paper Co Ltd | 離型性を有するポリプロピレンフイルム |
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WO2015037426A1 (ja) * | 2013-09-10 | 2015-03-19 | 旭化成ケミカルズ株式会社 | 離型フィルム、成型体の製造方法、半導体部品及びリフレクター部品 |
JP2015063079A (ja) * | 2013-09-25 | 2015-04-09 | 三井化学株式会社 | 積層体 |
WO2017199764A1 (ja) * | 2016-05-16 | 2017-11-23 | 三井化学東セロ株式会社 | 多層プリント配線板の製造に好適な離型フィルム |
JP2017205902A (ja) * | 2016-05-16 | 2017-11-24 | 三井化学東セロ株式会社 | 多層プリント配線板の製造に好適な離型フィルム |
Also Published As
Publication number | Publication date |
---|---|
EP1616689A1 (en) | 2006-01-18 |
US7314905B2 (en) | 2008-01-01 |
CN100464966C (zh) | 2009-03-04 |
EP1616689A4 (en) | 2010-07-14 |
JPWO2004087401A1 (ja) | 2006-06-29 |
KR100591633B1 (ko) | 2006-06-20 |
EP1616689B1 (en) | 2014-05-07 |
KR20050018805A (ko) | 2005-02-28 |
CN1697728A (zh) | 2005-11-16 |
JP4489699B2 (ja) | 2010-06-23 |
US20060105190A1 (en) | 2006-05-18 |
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