KR102324897B1 - Method for manufacturing a metal-clad laminate - Google Patents

Abstract

A method for efficiently manufacturing a metal-clad laminate is provided. In the above manufacturing method, a pair of pressure rolls (r ₁ , r ₂ ), a pair of release material unwinding rolls (16, 16), and a plurality of unwinding rolls for unwinding the constituent materials of the metal-clad laminate are prepared, Each unwinding roll is formed so that the constituent material at least forms a state (M)/(M) in which the metal foils are adjacent to each other, and a pair of mold release materials (C ₁ , C _{2 ) sandwich the entire constituent material.} place it After the pair of mold release materials (C ₁ , C ₂ ) are heated in advance, the whole _{is thermocompressed by the pair of pressure rolls (r 1} , r ₂ ) while sandwiching the constituent materials, and then peeled off Through the process, a plurality of metal-clad laminates are manufactured.

Description

Method for manufacturing a metal-clad laminate

This application claims the priority of Patent Application No. 2018-178691 for which it applied in Japan on September 25, 2018, The whole is taken in as making a part of this application by reference.

The present invention relates to at least one of a film (hereinafter, this may be referred to as a thermoplastic liquid crystal polymer film) comprising a thermoplastic polymer capable of forming an optically anisotropic molten phase (hereinafter, this may be referred to as a thermoplastic liquid crystal polymer). The present invention relates to a method for producing a metal-clad laminate (or a metal-clad laminate having a metal layer on at least one surface of a thermoplastic liquid crystal polymer film) in which a metal foil is laminated on the surface of

BACKGROUND ART A thermoplastic liquid crystal polymer film is known as a material excellent in high heat resistance, low hygroscopicity, high frequency characteristics, and the like, and in recent years has attracted attention as an electronic circuit material for high-speed transmission. When used for electronic circuit board applications, a laminate of a thermoplastic liquid crystal polymer film and a metal foil typified by copper foil is used, but as a technique for manufacturing a laminate comprising such a thermoplastic liquid crystal polymer film and metal foil, a hot press device is used to , a method in which a thermoplastic liquid crystal polymer film cut to a predetermined size and a metal foil are stacked between the upper and lower hot plates, and heat-compression-bonding in a vacuum state is mentioned. However, since this method is a batch method, there is a problem in that the production efficiency is poor.

On the other hand, the roll-to-roll type (hereinafter referred to as a roll type) method in which the thermoplastic liquid crystal polymer film and the metal foil are laminated and thermally compressed continuously is advantageous in terms of production efficiency. In particular, in roll-type manufacturing, as a method of manufacturing a metal laminate with industrially good productivity, in Patent Document 1 (International Publication No. 2011/093427), both front and back surfaces have a surface roughness (Rz) by a roll method. (r ₁ )/(B)/(A)/(C)/(A)/(B) _{between a pair of pressure rolls (r 1} , r ₂ ) using a separation film (C) of 2.0 µm or less In order of /(r ₂ ), the insulating film (A), the metal foil (B), and the separation film (C) are laminated and thermocompressed, and peeled from the separation film (C) to obtain two single-sided metal-clad laminates. A method for manufacturing a metal-clad laminate is disclosed.

Moreover, in patent document 2 (Unexamined-Japanese-Patent No. 2014-128913), a heat capacity is 50- 150 using the separated film (C) in the range of the J / ㎡, between the pressure roll (r _1, r ₂₎ of the pair _{(r 1) / (B)} / (a) / (B ') / ( C) The insulating film (A), the metal foil (B, B'), and the separation film (C) are laminated and thermocompressed in the order of C)/(B')/(A)/(B)/(r _{2 ),} Then, the manufacturing method of the double-sided metal-clad laminate which isolate|separates or peels the double-sided metal-clad laminated body from the separation film (C), and obtains two double-sided metal-clad laminates is disclosed.

International Publication No. 2011/093427 Japanese Patent Laid-Open No. 2014-128913

In all these patent documents, centering on a separation film, two metal-clad laminates are arrange|positioned so that the separation film may mutually contact|abut up and down symmetrically, and thermocompression-compression is performed by roll type, It is characterized by the above-mentioned. However, in these documents, the separation film arranged at the center directly contacts the metal-clad laminate while being introduced into the heating roll.

Since the thermocompression compression temperature of the thermoplastic liquid crystal polymer film is usually carried out in a temperature range exceeding 200 °C, the separation film having a high water absorption rate is introduced into the pressure roll as it is at room temperature and rapidly heated by the pressure roll, the temperature is 200 °C from room temperature. Since it is heated at a stretch to an excessively high temperature, the water|moisture content of a separation film volatilizes rapidly.

Then, since the separation film comes into contact with the constituent material of the metal-clad laminate at the same time as it is introduced into the heating roll, moisture rapidly evaporated from the separation film directly acts on the constituent material of the metal-clad laminate, and as a result, the metal Problems, such as poor appearance, such as bubble marks, and lamination|stacking defect, arise in a clad laminated body. In addition, due to thermal expansion due to a rapid increase in temperature at the time of thermal compression, appearance defects such as wrinkles and lamination defects occur in the metal-clad laminate due to the difference in coefficients of thermal expansion between the separation film and other materials. In addition, when moisture is present inside the separation film, the thermoplastic polymer is hydrolyzed by the steam heated at once, and as a result, the low molecular weight thermoplastic liquid crystal polymer of the metal-clad laminate adheres to the surface of the separation film, forming the separation film. It cannot be used repeatedly.

An object of the present invention is to solve these problems and to provide a method for efficiently manufacturing a metal-clad laminate by a roll type.

As a result of intensive studies to achieve the above object, the inventors of the present invention have found that even when two or more metal-clad laminates are simultaneously thermocompressed as a multi-stacked layer, the constituent material of the metal-clad laminate (hereinafter simply referred to as constituent material) By heating the mold release material before contact with the mold release material (i), moisture in the mold release material is removed, which can suppress the occurrence of moisture-derived problems in the metal-clad laminate, (ii) By reducing the difference in the coefficient of thermal expansion between the mold release material and the constituent material, it is possible to prevent wrinkles, etc. from occurring in the metal-clad laminate, (iii) In addition, in such a manufacturing method, the mold release material is prevented from being contaminated Since the release material can be used repeatedly, it is economically superior, and using such a release material, if the constituent materials are sandwiched as a whole in a state where the metal foils are adjacent to each other and thermocompression is performed, rapid heating of the metal foil can be prevented. , As a result, in a peeling process, it discovered that it peeled between metal foils efficiently, and a metal-clad laminated body could be manufactured, and it led to completion of this invention.

That is, the present invention can be configured in the following aspects.

[Aspect 1]

A pair of pressure rolls (r ₁ , r ₂ ), a _{pair of release material unwinding rolls for unwinding the release material (C 1} , C ₂ ), a plurality of metal coatings composed of a thermoplastic liquid crystal polymer film (F) and a metal foil (M) A step of preparing a plurality of unwinding rolls for unwinding constituent materials for forming a laminate;

The plurality of unwinding rolls are disposed so that the constituent material forms at least a state (M)/(M) in which the metal foils are adjacent to each other, and the pair of mold release materials (C ₁ , C ₂ ) is the constituent material A batch process of arranging a release material unwinding roll so as to sandwich the whole;

A heating step in which the pair of mold release materials (C ₁ , C ₂ ) are unwound from the mold release material unwinding roll and heated, respectively;

A pair of mold release materials (C ₁ , C ₂ ) that have passed through the heating step are sandwiched between the constituent materials, while the entire pair of pressure rolls (r ₁ , r ₂ ) A thermocompression process introduced into the

By after the thermocompression bonding process, at least one of the peeling rolls, the releasing member (C _1, C _2), and a releasing member thermotropic liquid crystal polymer film (F) and / or the metal foil in contact with _{(C 1, C 2) (} M) The manufacturing method of the metal-clad laminated body provided with at least the peeling process in which this peels, respectively, and the said adjacent metal foil (M) and metal foil (M) peel.

[Mode 2]

A method for producing a metal-clad laminate according to aspect 1, wherein the thermoplastic liquid crystal polymer film (F) is in contact with either or both of _{the mold release materials (C 1} , C _{2 ).}

[Mode 3]

The manufacturing method according to aspect 1, wherein the metal foil (M) is in contact with any one or both of _{the mold release materials (C 1} , C _{2 ).}

[Aspect 4]

In the manufacturing method according to aspect 1 or 2, in the thermocompression bonding step, (r ₁ )/(C ₁ )/(F)/(M) _{between the pair of pressure rolls (r 1} , r _{2 )} /(M)/(F)/(C ₂ )/(r ₂ ) superimposed in the order of thermocompression is performed,

In the above separation _{process, (C 1) / (F} ) _{between, (F) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the two metal clad laminate, the metal-coated laminate manufacturing method.

[Aspect 5]

In the manufacturing method according to aspect 1 or 2, in the thermocompression bonding step, (r ₁ )/(C ₁ )/(F)/(M) _{between the pair of pressure rolls (r 1} , r _{2 )} /(M)/(F)/(M)/(M)/(F)/(C ₂ )/(r ₂ ) is superimposed in the order of thermocompression compression,

In the above separation _{process, (C 1) / (F} ) _{between, (F) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the three metal clad laminate, the metal-coated laminate manufacturing method.

[Aspect 6]

In the manufacturing method according to aspect 1 or 3, in the thermocompression bonding step, (r ₁ )/(C ₁ )/(M)/(F)/ _{between the pair of pressure rolls (r 1} , r _{2 )/} (M)/(M)/(F)/(M)/(C ₂ )/(r ₂ ) superimposed in the order of thermocompression compression is performed,

In the above separation _{process, (C 1) / (M} ) _{between, (M) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the two metal clad laminate, the metal-coated laminate manufacturing method.

[Mode 7]

In the manufacturing method according to aspect 1 or 3, in the thermocompression bonding step, (r ₁ )/(C ₁ )/(M)/(F)/ _{between the pair of pressure rolls (r 1} , r _{2 )/} (M)/(M)/(F)/(M)/(M)/(F)/(M)/(C ₂ )/(r ₂ ) superimposed in the order of thermocompression compression,

In the peeling step, a _{metal-clad laminate is obtained by peeling between (C 1} )/(M), between (M)/(C ₂ ), and between (M)/(M), to obtain three metal-clad laminates. manufacturing method.

[Mode 8]

A manufacturing method according to any one of aspects 1 to 7, wherein the release material (C ₁ ) and/or the release material (C ₂ ) is a release material selected from the group consisting of a heat-resistant resin film, a heat-resistant composite film, and a heat-resistant nonwoven fabric, metal coating A method for manufacturing a laminate.

[Aspect 9]

The manufacturing method according to any one of aspects 1 to 8, wherein in the heating step, the pair of release materials (C ₁ , C ₂ ) are unwound from the release material unwinding roll, and the pair of pressure rolls (r _{1 ), respectively} , r ₂ ), whereby each mold release member is heated.

[Aspect 10]

In the manufacturing method according to aspect 9, in the heating step, the time during which the pair of mold release materials (C ₁ , C ₂ ) is in contact with the pair of pressure rolls (r ₁ , r ₂ ) by circumscribed contact is, 1.0 second or more, the manufacturing method of a metal-clad laminate.

[Mode 11]

Embodiment 9 or a 10 process according to, further, the pair of the releasing member (C _1, C ₂₎ the pressure roll of the pair (r _1, r ₂₎ to the first pair of guide rolls for the circumscribed about ( g ₁ , g ₂ ) A method for producing a metal-clad laminate.

[Aspect 12]

A manufacturing method according to any one of aspects 1 to 11, further comprising a cooling roll for cooling the laminate that has passed through the _{pair of pressing rolls (r 1} , r _{2 ).} manufacturing method.

[Mode 13]

In the production method according to any one of aspects 1 to 5 and 8 to 12, _{the peel strength of the thermoplastic liquid crystal polymer film (F) and the release material (C 1} ) or _{the release material (C 2} ) after thermocompression is 0.6 kN/m or less ( More preferably, it is 0.4 kN/m or less, 0.3 kN/m or less), The manufacturing method of the metal-clad laminated body.

[Aspect 14]

In the manufacturing method according to any one of Aspects 1 to 3 and 6 to 13, _{the peel strength of the metal foil (M) and the mold release material (C 1} ) or the mold _{release material (C 2} ) after thermocompression is 0.3 kN/m or less (more preferably is 0.2 kN/m or less, 0.1 kN/m or less), the method for producing a metal-clad laminate.

[Aspect 15]

The manufacturing method according to any one of aspects 1 to 14, wherein the peel strength between the metal foil (M) and the metal foil (M) after thermocompression bonding is 0.3 kN/m or less (more preferably 0.2 kN/m or less, 0.1 kN/m) m or less) phosphorus, a method for producing a metal-clad laminate.

Further, any combination of at least two elements disclosed in the claims and/or the specification and/or the drawings is encompassed by the present invention. In particular, any combination of two or more of the claims recited in the claims is encompassed by the present invention.

According to the present invention, since the mold release material can be thermocompressed by contacting the constituent material with a reduced moisture content, it is possible to efficiently manufacture a metal-clad laminate that does not cause appearance defects such as bubble marks or wrinkles. . Moreover, since the mold release material is preheated in the heating process, the difference in the coefficient of thermal expansion between the mold release material and the constituent material at the time of lamination can be reduced, and wrinkles etc. can be prevented from occurring in a metal-clad laminate. Therefore, in such a manufacturing method, a mold release material is prevented from being contaminated, a mold release material can be used repeatedly, and it is excellent in economical efficiency. _{In addition, using the mold release material (C 1} , C ₂ ) that has passed through the heating process, thermocompression is performed by sandwiching the constituent materials as a whole in a state where the metal foils are adjacent to each other, thereby preventing the release of heat to the metal foil at once, and the peeling process In this, it becomes possible to quickly separate the laminate and improve the production efficiency.

This invention is understood more clearly from description of the following preferred embodiment with reference to the accompanying drawings. However, the embodiments and drawings are for purposes of illustration and description only, and should not be used to define the scope of the invention. The scope of this invention is defined by the appended claims. In the accompanying drawings, the same part number in a plurality of drawings indicates the same part. The drawings are not necessarily drawn to scale and are exaggerated in illustrating the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 1st Embodiment of this invention.
It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 2nd Embodiment of this invention.
It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 3rd Embodiment of this invention.
It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 4th Embodiment of this invention.
It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 5th Embodiment of this invention.
It is a side schematic diagram for demonstrating the modification of the manufacturing method of the metal-clad laminated body by 1st Embodiment of this invention.
It is a side schematic diagram for demonstrating the other modified example of the manufacturing method of the metal-clad laminated body by 1st Embodiment of this invention.

In the method for producing a metal-clad laminate of the present invention, a plurality of sets of metal-clad laminates in which a metal foil is laminated on at least one surface of a thermoplastic liquid crystal polymer film can be continuously manufactured.

(Thermoplastic liquid crystal polymer film)

The thermoplastic liquid crystal polymer film used in the production method of the present invention is formed of a liquid crystal polymer that can be melt-molded. The thermoplastic liquid crystal polymer is a polymer capable of forming an optically anisotropic melt phase, and is not particularly limited as long as it is a liquid crystal polymer that can be melt-molded. Thermoplastic liquid crystal polyesteramide etc. in which the amide bond was introduce|transduced to this are mentioned.

Further, the thermoplastic liquid crystal polymer may be a polymer in which an isocyanate-derived bond such as an imide bond, a carbonate bond, a carbodiimide bond or an isocyanurate bond is introduced into an aromatic polyester or an aromatic polyesteramide.

Specific examples of the thermoplastic liquid crystal polymer used in the present invention include known thermoplastic liquid crystal polyesters and thermoplastic liquid crystal polyesteramides derived from compounds classified into (1) to (4) and derivatives thereof, which are exemplified below. have. However, in order to form a polymer capable of forming an optically anisotropic melt phase, it goes without saying that there is an appropriate range for the combination of various raw material compounds.

(1) aromatic or aliphatic dihydroxy compounds (refer to Table 1 for representative examples)

(2) aromatic or aliphatic dicarboxylic acids (refer to Table 2 for representative examples)

(3) Aromatic dihydroxycarboxylic acid (refer to Table 3 for representative examples)

(4) aromatic diamine, aromatic hydroxyamine or aromatic aminocarboxylic acid (refer to Table 4 for representative examples)

Representative examples of the thermoplastic liquid crystal polymers obtained from these raw material compounds include copolymers having structural units shown in Tables 5 and 6.

Among these copolymers, polymers containing at least p-hydroxybenzoic acid and/or 6-hydroxy-2-naphthoic acid as repeating units are preferable, and in particular (i) p-hydroxybenzoic acid and 6-hydroxy- A polymer comprising a repeating unit of 2-naphthoic acid, or (ii) at least one aromatic hydroxycarboxylic acid selected from the group consisting of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, and at least 1 A copolymer comprising repeating units of an aromatic diol of the species and at least one aromatic dicarboxylic acid is preferred.

For example, in the polymer of (i), when the thermoplastic liquid crystal polymer contains at least repeating units of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, p-hydroxy in the repeating unit (A) The molar ratio (A)/(B) of benzoic acid and 6-hydroxy-2-naphthoic acid in the repeating unit (B) is about (A)/(B) = 10/90 to 90/10 in the thermoplastic liquid crystal polymer. It is preferable that it is, More preferably, (A)/(B)=about 15/85-85/15 may be sufficient, More preferably, (A)/(B)=about 20/80-80/20 may be

Further, in the case of the polymer of (ii), at least one aromatic hydroxycarboxylic acid (C) selected from the group consisting of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid, and 4,4' - at least one aromatic diol (D) selected from the group consisting of dihydroxybiphenyl, hydroquinone, phenylhydroquinone, and 4,4'-dihydroxydiphenyl ether, terephthalic acid, isophthalic acid and 2; The molar ratio of each repeating unit in the thermoplastic liquid crystal polymer of at least one aromatic dicarboxylic acid (E) selected from the group consisting of 6-naphthalenedicarboxylic acid is aromatic hydroxycarboxylic acid (C): The aromatic diol (D): the aromatic dicarboxylic acid (E) = (30 to 80): (35 to 10): (35 to 10) may be about, and more preferably (C): (D): (E) = (35 to 75): (32.5 to 12.5): (32.5 to 12.5) may be about, and more preferably (C): (D): (E) = (40 to 70): (30 to) 15): About (30-15) may be sufficient.

In addition, the molar ratio of the repeating unit derived from 6-hydroxy-2-naphthoic acid in the aromatic hydroxycarboxylic acid (C) may be, for example, 85 mol% or more, preferably 90 mol% or more; More preferably, 95 mol% or more may be sufficient. The molar ratio of the repeating unit derived from 2,6-naphthalenedicarboxylic acid in the aromatic dicarboxylic acid (E) may be, for example, 85 mol% or more, preferably 90 mol% or more, more preferably may be 95 mol% or more.

Moreover, aromatic diol (D) is mutually different 2 types selected from the group which consists of hydroquinone, 4,4'- dihydroxybiphenyl, phenyl hydroquinone, and 4,4'- dihydroxydiphenyl ether. Repeating units (D1) and (D2) derived from an aromatic diol may be used, and in that case, the molar ratio of the two aromatic diols may be (D1)/(D2) = 23/77 to 77/23, more preferably may be 25/75 to 75/25, more preferably 30/70 to 70/30.

Moreover, it is preferable that the molar ratio of the repeating structural unit derived from aromatic diol and the repeating structural unit derived from aromatic dicarboxylic acid is (D)/(E)=95/100 - 100/95. Outside this range, the degree of polymerization does not rise and the mechanical strength tends to decrease.

In addition, that the optically anisotropic molten phase as said in this invention can be formed can be recognized by, for example, putting a sample on a hot stage, heating it at elevated temperature in nitrogen atmosphere, and observing the transmitted light of a sample.

The thermoplastic liquid crystal polymer preferably has a melting point (hereinafter referred to as Tm ₀ ) in the range of 200 to 360°C, preferably in the range of 240 to 360°C, more preferably in the range of 260 to 360°C. , more preferably Tm ₀ is 270 to 350 °C. Also, Tm ₀ is obtained by a differential scanning calorimeter (manufactured by Shimadzu Corporation DSC) by measuring the temperature of the main endothermic peak appears. That is, after the temperature of the thermoplastic liquid crystal polymer sample is raised at a rate of 10 °C/min and completely melted, the melt is cooled to 50 °C at a rate of 10 °C/min, and the endothermic peak that appears after the temperature is raised at a rate of 10 °C/min again The position is determined as the melting point of the thermoplastic liquid crystal polymer sample.

Polyethylene terephthalate, modified polyethylene terephthalate, polyolefin, polycarbonate, polyarylate, polyamide, polyphenylene sulfide, polyether ether ketone, fluorine You may add thermoplastic polymers, such as resin, various additives, a filler, etc.

The thermoplastic liquid crystal polymer film used in the production method of the present invention is obtained, for example, by extrusion molding the melt-kneaded product of the thermoplastic liquid crystal polymer. Although any method is used as the extrusion method, well-known T-die method, inflation method, etc. are industrially advantageous. In particular, in the inflation method, stress is applied not only in the machine axis direction (hereinafter, abbreviated as MD direction) of the thermoplastic liquid crystal polymer film but also in the direction orthogonal thereto (hereinafter, abbreviated as TD direction) in the MD direction and TD direction. Since it can be stretched uniformly, a thermoplastic liquid crystal polymer film in which the molecular orientation, dielectric properties, and the like in the MD and TD directions are controlled can be obtained.

For example, in extrusion molding by the T-die method, the molten sheet extruded from the T-die may be simultaneously stretched in both the MD direction and the TD direction of the thermoplastic liquid crystal polymer film to form a film. Alternatively, the melt sheet extruded from the T-die may be once stretched in the MD direction and then stretched in the TD direction to form a film.

Moreover, in extrusion molding by the inflation method, a predetermined draw ratio (corresponding to the draw ratio in the MD direction) and blow ratio (corresponding to the draw ratio in the TD direction) to the cylindrical sheet melt-extruded from the ring die. It may be stretched and formed into a film.

The draw ratio of such extrusion molding, as a draw ratio (or draw ratio) in the MD direction, may be, for example, about 1.0 to 10, preferably about 1.2 to 7, more preferably about 1.3 to 7 . Moreover, as a draw ratio (or blow ratio) of TD direction, for example, about 1.5-20 may be sufficient, Preferably it is about 2-15, More preferably, it may be about 2.5-14.

Further, if necessary, the melting point and/or coefficient of thermal expansion of the thermoplastic liquid crystal polymer film may be adjusted by performing a known or customary heat treatment. Heat treatment conditions can be appropriately set according to the purpose, for example, the melting point of the thermoplastic liquid crystal polymer (Tm ₀ ) - 10 °C or higher (for example, Tm ₀ - 10 °C - about Tm ₀ + 30 °C, preferably The melting point (Tm) of the thermoplastic liquid crystal polymer film may be increased by heating at a temperature of about Tm ₀ °C to Tm _{0+20°C for several hours.}

The melting point (Tm) of the thermoplastic liquid crystal polymer film may be, for example, 270 to 380°C, preferably in the range of 280 to 370°C.

In addition, the melting point (Tm) of the thermoplastic liquid crystal polymer film can be obtained by observing the thermal behavior of the thermoplastic liquid crystal polymer film sample using a differential scanning calorimeter. That is, the position of the endothermic peak that appears when the temperature of the TLCP film sample is raised at a rate of 10°C/min can be obtained as the melting point (Tm) of the TLCP film.

(metal foil)

There is no restriction|limiting in particular as metal foil used for the manufacturing method of this invention, For example, gold, silver, copper, iron, nickel, aluminum, or these alloy metals, etc. may be sufficient, Conductivity, handleability, cost, etc. From a viewpoint, copper foil and stainless steel foil are preferable. In addition, as copper foil, the thing manufactured by the rolling method or the electrolytic method can be used.

The thickness of metal foil can be set suitably as needed, For example, about 5-50 micrometers may be sufficient, More preferably, the range of 8-35 micrometers may be sufficient. Moreover, surface treatment, such as a roughening process normally performed, may be given to metal foil.

(Lee Hyung-jae)

The mold release material used in the production method of the present invention is not particularly limited as long as it can be easily peeled off from an adjacent adherend after thermal compression and has heat resistance, and non-thermoplastic polyimide films, aramid films, and Teflon (registered trademarks) ) heat-resistant resin films such as films; Heat-resistant composite film (For example, the composite film which consists of several heat-resistant resin films, and the composite film which consists of metal foil and a heat-resistant resin film); Metal foils, such as aluminum foil and stainless steel foil; and a heat-resistant nonwoven fabric composed of heat-resistant fibers (eg, heat-resistant resin fibers and metal fibers). You may use these mold release materials individually or in combination of 2 or more types.

Among these mold release materials, a heat resistant resin film, a heat resistant composite film, and a heat resistant nonwoven fabric are preferable from a viewpoint of being excellent in heat resistance and rebound elasticity.

The thickness of a mold release material can be set suitably as needed, For example, about 10-300 micrometers may be sufficient, Preferably it is 15-150 micrometers, More preferably, the range of 15-45 micrometers may be sufficient. Moreover, in order to improve the peelability with the to-be-adhered body after thermocompression bonding to a mold release material, the mold release process may be given to single side|surface or both surfaces. As a method of a mold release process, the method of forming heat-resistant mold release resin films, such as a silicone resin and a fluororesin, on at least one surface of a mold release material, etc. are mentioned, for example.

(Method for producing a metal-clad laminate)

The manufacturing method of the metal-clad laminate of this invention,

A pair of pressure rolls (r ₁ , r ₂ ), a _{pair of release material unwinding rolls for unwinding the release material (C 1} , C ₂ ), a plurality of metal coatings composed of a thermoplastic liquid crystal polymer film (F) and a metal foil (M) A step of preparing a plurality of unwinding rolls for unwinding constituent materials for forming a laminate;

The plurality of unwinding rolls are disposed so that the constituent material forms at least a state (M)/(M) in which the metal foils are adjacent to each other, and the pair of mold release materials (C ₁ , C ₂ ) is the constituent material A batch process of arranging a release material unwinding roll so as to sandwich the whole;

A heating step in which the pair of mold release materials (C ₁ , C ₂ ) are unwound from the mold release material unwinding roll, and the mold release material is heated, respectively;

A thermocompression compression step in which a _{pair of mold release materials (C 1} , C ₂ ) that have passed through the heating step _{are introduced into the pair of pressure rolls (r 1} , r ₂ ) while sandwiching the constituent materials in between;

By after the thermocompression bonding process, at least one of the peeling rolls, the releasing member (C _1, C _2), and a releasing member thermotropic liquid crystal polymer film (F) and / or the metal foil in contact with _{(C 1, C 2) (} M) This peels, respectively, and the said adjacent metal foil M and the metal foil M are equipped with at least the peeling process which peels.

Here, the number of the thermoplastic liquid crystal polymer films (F) in the constituent material for forming one metal-clad laminate may be singular or plural. Moreover, a single number may be sufficient as metal foil M, and a plurality may be sufficient as it. In addition, when two or more are included, respectively, it may be same and may differ.

In addition, the constituent material of the metal-clad laminate to be unwound from the unwinding roll may be a single-piece thermoplastic liquid crystal polymer film (F) or a single metal foil (M), or a single side of the thermoplastic liquid crystal polymer film (F) and metal foil (M). Metal-clad laminate (M)/(F) may be sufficient. Therefore, (i) the thermoplastic liquid crystal polymer film (F) is wound on the plurality of unwinding rolls for unwinding the constituent materials for forming the plurality of metal-clad laminates composed of the thermoplastic liquid crystal polymer film (F) and the metal foil (M). The unwinding roll for unwinding, (ii) the unwinding roll for unwinding the metal foil (M), and/or (iii) the unwinding roll for unwinding the single-sided metal-clad laminate (M)/(F) may be included.

In addition, the obtained metal-clad laminates may be the same or different.

Each unwinding roll is arrange|positioned so that the following conditions may be satisfied, for example.

(i) A plurality of metal-clad laminates (single-sided metal-clad laminate and/or double-sided metal-clad laminate) are formed from the constituent materials of a plurality of metal-clad laminates, and adjacent metal-clad laminates are each It adjoins through metal foil.

_{(ii) The release material (C 1} , C ₂ ) unwound from the pair of release material unwinding rolls sandwiches the entire constituent material, that is, the release material (C ₁ ) and the release material (C ₂ ) form the outermost layer, respectively. do.

A releasing member in the heating step of (C _1, C _2), a releasing member (C _1, C ₂₎ a not particularly limited to heat, heating the releasing member (C _1, C ₂₎ by an external heating means such as a heater It may be, and may heat the pressure roll (r _1, r ₂₎ and the releasing member (C _1, C ₂₎ by a heating roller that is formed separately. Alternatively, the mold release members C ₁ , C ₂ may be heated _{by circumscribing the mold release members C 1} , C ₂ to the pressure rolls r ₁ , r _{2 .}

In the heating step, by heating the pre-releasing member (C _1, C _2), with the elimination of water in the releasing member, it is possible to reduce the difference in coefficient of thermal expansion of the releasing member and the constituent material. _{In addition, by using the mold release material (C 1} , C ₂ ) that has undergone a heating process, thermocompression is performed by sandwiching the constituent materials as a whole in a state where the metal foils are adjacent to each other, thereby preventing the release of heat to the metal foil at once, Peeling can be facilitated.

The heating step may be judged on the basis of the thermocompression bonding temperature, for example, when the thermocompression bonding temperature is T°C, the temperature of the heating step may be, for example, T-10°C or higher, and T-5 C or more may be sufficient, and it is preferable that it is lower than the thermocompression-bonding temperature, and less than T degreeC may be sufficient as an upper limit.

In the heating process, the heating time can be appropriately set depending on the heating means, but for example, the moisture content of the mold release material is within a predetermined range (for example, 1100 ppm or less, 900 ppm or less, 700 ppm or less, or 400 ppm or less). ), it is preferable to heat in the range that becomes

EMBODIMENT OF THE INVENTION Hereinafter, specific embodiment is described, referring drawings. BRIEF DESCRIPTION OF THE DRAWINGS It is a side schematic diagram for demonstrating the manufacturing method of the metal-clad laminated body by 1st Embodiment.

In the process of the present invention, the pressing roll of the pair (r _1, r ₂₎ of the upstream side, a releasing member (C _1, C ₂₎ the volume shipments releasing member Issues chulrol (11, 11), the thermoplastic liquid crystal of the pair A plurality of thermoplastic liquid crystal polymer film unwinding rolls 12 and 12 for unwinding the polymer film F, and a plurality of metal foil unwinding rolls 13 and 13 for unwinding the metal foil M are prepared.

Here, as shown in FIG. 1 , in the first embodiment, the thermoplastic liquid crystal polymer film (F), the metal foil (M), the mold release material (C ₁ ), and the mold release material (C ₂ ) are a pair of pressure rolls (r _{1 ).} , r ₂ ) in the order of (r ₁ )/(C ₁ )/(F)/(M)/(M)/(F)/(C ₂ )/(r ₂ ), each unwinding roll are placed

Specifically, on the upstream side of the pair of pressure rolls r ₁ , r ₂ , the pair of release material unwinding rolls 11 and 11 for unwinding the release _{material C 1} , C _{2 are each the outermost layer.} A plurality of TLCP film unwinding rolls 12 and 12 for unwinding the TLCP film (F) are disposed inside, and a plurality of metal foils for unwinding the metal foil (M) are disposed on the inner side thereof. Unwinding rolls 13 and 13 are arranged.

As shown in FIG. 1 , _{after each unwinding roll is disposed on a pair of pressure rolls r 1} , r ₂ , from each unwinding roll, as indicated by an arrow, a thermoplastic liquid crystal polymer film (F); The metal foil M and the mold release material C ₁ , C ₂ are unwound and introduced into the pair of pressure rolls r ₁ , r ₂ in the MD direction (or lamination direction) indicated by the arrow.

_{Here, the pair of release materials C 1} , C ₂ unwound from the release material unwinding rolls 11 and 11 before being introduced into contact with the constituent material in the pair of pressure rolls, respectively, the pair of pressure rolls With respect to (r ₁ , r ₂ ), a circumscribed process is performed for a predetermined period of time.

In the circumscribed process, when the mold release members C ₁ , C ₂ contact the outer periphery of the pressure rolls r ₁ , r ₂ , it becomes possible to remove moisture from the _{mold release members C 1} , C _{2 . In addition, by reducing the moisture content of the release material (C 1} , C ₂ ) before contact with the thermoplastic liquid crystal polymer film (F) and the metal foil (M), problems such as bubble marks or lamination defects on the surface of the laminate can be suppressed In the circumscribed process, the starting point in contact with the outer periphery of the pressure roll can be appropriately set according to the size of the pressure roll and the rotation speed of the pressure roll, and from the predetermined starting point, the release materials (C ₁ , C ₂ ) follow the pressure roll A circumscribed process may be performed. In addition, circumscribed in this invention means that a mold release material contacts and conveys so that it may follow the outer periphery of a pressure roll from a predetermined starting point.

The position of the release material unwinding _{roll is not particularly limited as long as the pair of release materials (C 1} , C ₂ ) can contact the pair of pressure rolls (r ₁ , r ₂ ), and the release material unwound from the release material unwinding roll may be directly introduced into the pressure roll, or the release material unwound from the release material unwinding roll may be introduced into the pressure roll once, after passing through one or a plurality of guide rolls. For this reason, it is preferred that comprises a guide roll (g _1, g ₂₎ of the pair for the circumscribed about the releasing member of the pair to the pressure roll of the pair.

For example, as shown in FIG. 1 , a pair of _{mold release materials C 1} , C ₂ is unwound from the mold release material unwinding rolls 11 and 11 , and then is directly introduced into the _{pressure rolls r 1} , r _{2 .} Rather, it _{passes through the guide rolls 14 and 14 arranged in the vicinity of the pressure rolls r 1} , r ₂ , and then from the guide rolls 14 and 14 to the pair of pressure rolls r ₁ , r ₂ . may be introduced. By the guide rolls (14, 14), for the desired location of the pressure roll (r _1, r ₂₎ of the pair, it is possible to circumscribe the releasing member (C _1, C ₂₎ of the pair.

The installation point of the guide roll _{is not particularly limited as long as the pair of mold release materials (C 1} , C ₂ ) can be circumscribed with respect to the pair of pressure rolls (r ₁ , r ₂ ). In FIG. 1 , the guide roll is Although it is arrange|positioned in the vicinity of a pressure roll, you may contact with a pressure roll.

For example, in FIG. 1 , before thermocompression bonding, the mold release material C ₁ is circumscribed on the pressure roll r ₁ , and the mold release material C ₂ is circumscribed on the pressure roll r _{2 .} In this way, by circumscribing (or enclosing) the release material on the pressure roll, moisture contained in the release material can be removed, and the release material can be preheated to near the thermocompression temperature in advance. Although the distance at which the mold release material circumscribes the pressure roll can be appropriately set, for example, 1/8 or more of the pressure roll may be sufficient, 1/4 or more may be sufficient, and 1/2 or more may be sufficient as it.

The time for circumscribing the release material and the pressure roll can be appropriately set according to various conditions such as the type of the release material, the state of the release material, and the heating temperature of the pressure roll. It is preferable that time is, for example, 1.0 second or more, for example, 1.0-200 second may be sufficient and 3.0-125 second may be sufficient as it.

Further, the circumscribed time may be appropriately set by judging the time point at which the moisture content of the mold release material becomes within a predetermined range (eg, 1100 ppm or less, 900 ppm or less, 700 ppm or less, or 400 ppm or less).

Before the mold release material (C ₁ , C ₂ ) is pressed by the pressure roll, it is preferable to raise the temperature by circumscribing the pressure roll to a temperature of T-15° C. or higher with respect to the heating temperature T° C. of the pressure roll. In addition, the temperature of the mold release material before being pressurized by a pressure roll may be T-10 degreeC or more, T-5 degreeC or more may be sufficient, and less than heating temperature may be sufficient as it.

The pair of mold release materials (C ₁ , C ₂ ) is formed by sandwiching the constituent material of the metal-clad laminate composed of the thermoplastic liquid crystal polymer film (F) and the metal foil (M) as the outermost layer after the circumscribed process, is introduced into a pair of pressure rolls r ₁ , r _{2 .}

For example, in FIG. 1 , a pair of mold release materials (C ₁ , C ₂ ) includes a pair of pressure rolls (F)/(M)/(M)/(F) sandwiched therebetween r ₁ , r ₂ ).

In the pair of pressure rolls, a laminate composed of a thermoplastic liquid crystal polymer film (F) and a metal foil (M) including a _{pair of mold release materials (C 1} , C _{2 ) as the outermost layer, that is, (C 1} )/( For F)/(M)/(M)/(F)/(C ₂ ), a pressure is applied at a predetermined heating temperature.

As the pressing roll, a known heating and pressing device can be used. In addition, there are no particular restrictions on the thermocompression bonding temperature or the pressure conditions of the pressing roll, but for good adhesion between the thermoplastic liquid crystal polymer film and the metal foil, for example, the thermocompression bonding temperature with respect to the melting point (Tm) of the thermoplastic liquid crystal polymer film. may be, for example, in the range of (Tm-20) to (Tm+20)°C, preferably (Tm-15) to (Tm+5)°C.

Further, the pressurization pressure may be in the range of 10 t/m (98 kN/m) to 1.5 t/m (14.7 kN/m), preferably 5 t/m (49 kN/m) to 1.0 t/m ( 9.8 kN/m). In addition, the pressing pressure is a value obtained by dividing the force (compression load) applied to the pressing roll by the effective width of the pressing roll.

In the method for manufacturing the metal clad laminate of the present invention, at least by one peeling rolls, the releasing member (C _1, C _2), and a releasing member thermotropic liquid crystal polymer film (F) in contact with (C _1, C ₂₎ and / Or metal foil M peels, respectively, and the said adjacent metal foil M and metal foil M peel.

In the peeling step, peeling between the mold release material and the thermoplastic liquid crystal polymer film and/or metal foil in contact with the mold release member and peeling between the adjacent metal foil M and the metal foil M may be simultaneously performed, or the peeling is carried out in stages. may be carried out.

The peeling process can be performed by a known or customary method. For example, in the peeling process, at least one peeling roll is used to (i) a mold release material (either C ₁ or C ₂ ) and the mold release material. Peeling of the thermoplastic liquid crystal polymer film (F) in contact, (ii) Peeling of the mold release member (C ₁ , C ₂ ) and the metal foil (M) in contact with the mold release member, (iii) the adjacent metal foil (M) and the metal foil ( At least any one of peeling of M) may be performed. The order of said (i), (ii), and (iii) is not specifically limited, Multiple of these may be implemented simultaneously and may be implemented in stages.

Moreover, a pair of peeling rolls may be sufficient as at least 1 peeling roll, the some peeling roll arrange|positioned independently may be sufficient, and these combinations may be sufficient as it. Moreover, what is necessary is just to set the order of a peeling roll suitably, and an upstream may be sufficient as either.

For example, it may pass between a pair of peeling rolls, and you may implement said (i), (ii), and (iii) at once.

Alternatively, by passing between a pair of release rolls, any two of (i), (ii) and (iii) may be performed at once, and the remaining peeling may be performed step by step by a single release roll. , It may peel step by step with a single peeling roll, and then, it may pass between a pair of peeling rolls, and may perform remaining peeling.

For example, when peeling in stages, peeling between (M)/(M) which is metal foil is performed as the first peeling process, and then, continuously or simultaneously, _{between (C 1} )/(F), ( At least one peeling step selected from among F)/(C ₂ ), between (C ₁ )/(M), and between (M)/(C _{2 ) may be performed.} When performing the peeling process between metal foils first, heat can be radiated|released quickly from metal foil, As a result, the cooling rate of the laminated body in a peeling process can be made quick.

Alternatively, when peeling is performed in stages, the release material (C ₁ , C ₂ ) and the thermoplastic liquid crystal polymer film (F) and/or the metal foil (M) in contact with the release material (C ₁ , C _{2 ) are each peeled off} , that is, _{between (C 1} )/(F), (F)/(C ₂ ), (C ₁ )/(M), and (M)/(C ₂ ), at least one It is good also considering peeling as the first peeling process. What is necessary is just to implement the remaining peeling process sequentially or simultaneously as needed.

In this invention, since a mold release material is arrange|positioned in the outermost layer, a mold release material can be peeled very easily. As a result, generation|occurrence|production of the wrinkle which tends to occur when peeling is difficult can also be suppressed, and a high-quality metal-clad laminate can be manufactured with favorable productivity.

For example, in the first embodiment shown in Figure 1, the laminate _{(C 1) / (F)} / (M) / (M) / (F) / (C 2) , the peeling roll 15, 15 By passing through (C ₁ )/(F), between (F)/(C ₂ ), and between (M)/(M), it peels, and two single-sided metal-clad laminates (MF) are manufactured. Exfoliated releasing member (C _1, C _2), each releasing member is wound by the winding roll (16, 16). The peeled mold release materials (C ₁ , C ₂ ) can be reused as necessary because contamination by the low molecular weight thermoplastic liquid crystal polymer is suppressed. Moreover, the obtained metal-clad laminate is wound up by the metal-clad laminate winding rolls 17 and 17, respectively.

Further, as shown in FIG. 2 , in the second embodiment, the thermoplastic liquid crystal polymer film (F), the metal foil (M), the mold release material (C ₁ ), and the mold release material (C ₂ ) include a pair of pressure rolls (r ₁ , r ₂ ) between (r ₁ )/(C ₁ )/(F)/(M)/(M)/(F)/(M)/(M)/(F)/(C ₂ )/( such that the order of r _2), each volume chulrol are arranged. Here, the same code|symbol is attached|subjected to the member which has the same role as FIG. 1, and description is abbreviate|omitted.

In the second embodiment shown in FIG. 2 , (C ₁ )/(F)/(M)/(M)/(F)/(M)/ _{between a pair of pressure rolls r 1} , r _{2 .} (M)/(F)/(C ₂ ) The stacked laminate is _{peeled off between (C 1} )/(F), (F)/(C ₂ ) and (M)/(M) , two single-sided metal-clad laminates (M)/(F) (hereinafter sometimes abbreviated as MF or FM) and one double-sided metal-clad laminate (M)/(F)/(M) (hereinafter, MFM may be omitted) is manufactured.

3 , in the third embodiment, the thermoplastic liquid crystal polymer film (F), the metal foil (M), the mold release material (C ₁ ), and the mold release material (C ₂ ) include a pair of pressure rolls (r ₁ , r ₂ ) of (r ₁ )/(C ₁ )/(M)/(F)/(M)/(M)/(F)/(M)/(C ₂ )/(r ₂ ) Each unwinding roll is arrange|positioned so that it may become order. Here, the same code|symbol is attached|subjected to the member which has the same role as FIG. 1, and description is abbreviate|omitted.

In the third embodiment shown in FIG. 3 , (C ₁ )/(M)/(F)/(M)/(M)/(F)/ _{between a pair of pressure rolls r 1} , r _{2 .} (M) / (C ₂₎ laminate superimposed so that is, the separation between the (C ₁₎ / (M) between, (M) / (C _2), and between the (M) / (M), 2 double-sided A metal clad laminate (MFM) is produced.

4 , in the fourth embodiment, the thermoplastic liquid crystal polymer film (F), the metal foil (M), the mold release material (C ₁ ), and the mold release material (C ₂ ) include a pair of pressure rolls (r ₁ , between r ₂ ), (r ₁ )/(C ₁ )/(M)/(F)/(M)/(M)/(F)/(M)/(M)/(F)/(M) ) / (order of frequency such that _{C 2) / (r 2)} , each volume chulrol are arranged. Here, the same code|symbol is attached|subjected to the member which has the same role as FIG. 1, and description is abbreviate|omitted.

In the fourth embodiment shown in FIG. 4 , (C ₁ )/(M)/(F)/(M)/(M)/(F)/ _{between a pair of pressure rolls r 1} , r ₂ The stacked body such that (M)/(M)/(F)/(M)/(C _{2 ) is between (C 1} )/(M), between (M)/(C ₂ ) and (M) It peels between /(M), and three double-sided metal-clad laminates (MFM) are manufactured.

5, in the fifth embodiment, a single-sided metal-clad laminate (MF) (FM) of a metal foil (M) and a thermoplastic liquid crystal polymer film (F), a metal foil (M), and a mold release material (C _{1 )} ) and the mold release material (C ₂ ) are, in thermocompression, between a pair of pressure rolls (r ₁ , r ₂ ), (r ₁ )/(C ₁ )/(M)/(F)/(M) / a (M) / (F) / (M) / (C 2) / (r 2), each volume is arranged in order of frequency such that chulrol. Here, the single-sided metal-clad laminate MF is unwound from the unwinding roll 18 . In addition, the same code|symbol is attached|subjected to the member which has a role similar to FIG. 1, and description is abbreviate|omitted.

In the fifth embodiment shown in FIG. 5 , (C ₁ )/(M)/(F)/(M)/(M)/(F)/ _{between a pair of pressure rolls r 1} , r ₂ The laminate stacked so as to be (M)/(C _{2 ) is peeled off between (C 1} )/(M), between (F)/(C ₂ ) and between (M)/(M), A metal clad laminate (MFM) is produced.

Further, if necessary, it may be formed by a cooling roll to cool the laminated body having passed through the press roll (r _1, r ₂₎ of the pair on the downstream side of the pressure roll. For example, when a high-temperature laminate is conveyed, wrinkles due to tension may occur and ripples may occur. Therefore, by annealing the laminate after lamination with a 30°C cooling roll, the Tg of the thermoplastic liquid crystal polymer film You may cool below (80 degreeC or less). The cooling roll is preferably provided between the pressure roll and the release roll. The cooling roll may be comprised by a pair of rolls, and may be comprised by one single roll.

As an example, the side schematic diagram for demonstrating the modified example in which the peeling process was deform|transformed in FIG. 6 in 1st Embodiment is shown, for example. As shown in FIG. 6 , the cooling rolls 19 and 19 _{are provided on the downstream side of the pair of pressure rolls r 1} , r ₂ , and the plurality of release rolls 25 and 25 ′ are provided in the lamination advancing direction. installed in another place. The heat-pressing by the pressing roll of the pair (r _1, r ₂₎ laminate, followed by seoraeng through the cooling roll (19, 19). Thereafter, it is peeled off _{between (F)/(C 2} ) and between (M)/(M) by a release roll 25' to produce a single-sided metal-clad laminate (MF), followed by a release roll the separation between, (C ₁₎ / (M) by 25, the one-side metal clad laminate (MF) is may be prepared.

As another example, the side schematic diagram for demonstrating the modified example which deform|transformed the peeling process in 1st Embodiment in FIG. 7, for example is shown. As shown in Figure 7, the heat-pressing by the pressing roll of the pair (r _1, r _2), the laminate is, at first, by passing the stripping rolls (15, 15), between the (M) / (M) It is peeled off and _{divided into laminates (MFC 1} ) and (MFC ₂ ), and then each laminate passes through second release rolls 25 and 25 ′, respectively _{, between (F)/(C 1} ) and ( F) / (the separation between C _2), may be finally 2 Preparation of a one-side metal clad laminate (MF).

As long as the peeling step can be performed, the peeling strength between the mold release material and the thermoplastic liquid crystal polymer film after thermocompression bonding, the peeling strength between the mold release material and the metal foil, and the peeling strength between the metal foil and the metal foil may be appropriately set. Here, peeling strength is peeling strength (peel-off strength) measured based on JISC5016-1994 (90 degree peeling off).

For example, the peel strength between the release material and the thermoplastic liquid crystal polymer film after thermal compression is preferably 0.6 kN/m or less, more preferably 0.4 kN/m or less, and still more preferably 0.3 kN/m or less.

For example, it is preferable that it is 0.3 kN/m or less, as for the peeling strength between the mold release material and metal foil after thermocompression bonding, it is more preferable that it is 0.2 kN/m or less, It is still more preferable that it is 0.1 kN/m or less.

For example, it is preferable that it is 0.3 kN/m or less, as for the peeling strength between the metal foil and metal foil after thermocompression bonding, it is more preferable that it is 0.2 kN/m or less, It is still more preferable that it is 0.1 kN/m or less.

Industrial Applicability

According to the manufacturing method of this invention, a metal-clad laminated body can be manufactured efficiently, and the obtained metal-clad laminated body is a component used in the electric/electronic field, office equipment/precision equipment field, power semiconductor field, etc., for example. For example, it can be used effectively as a circuit board (particularly a board|substrate for millimeter wave radar).

As mentioned above, although preferred embodiment of this invention was described referring drawings, those skilled in the art will see this specification, and will assume various changes and correction easily within the range which is obvious. Accordingly, such changes and modifications are construed as being within the scope of the invention defined by the claims.

11: Unwinding roll of mold release material
12: Thermoplastic liquid crystal polymer film unwinding roll
13: metal foil unwinding roll
14: guide roll
15, 25, 25': release roll
16: release material winding roll
17: metal-clad laminate winding roll
18: metal-clad laminate unwinding roll
19: cooling roll

Claims (15)

A plurality of metals composed of a pair of pressure rolls (r ₁ , r ₂ ), a _{pair of release material unwinding rolls for unwinding the release material (C 1} , C ₂ ), a thermoplastic liquid crystal polymer film (F) and a metal foil (M) A step of preparing a plurality of unwinding rolls for unwinding the constituent materials for forming the clad laminate;
The plurality of unwinding rolls are disposed so that the constituent material forms at least a state (M)/(M) in which the metal foils are adjacent to each other, and the pair of mold release materials (C ₁ , C ₂ ) is the constituent material A batch process of arranging a release material unwinding roll so as to sandwich the whole;
A heating step in which the pair of mold release materials (C ₁ , C ₂ ) are unwound from the mold release material unwinding roll and heated, respectively;
A pair of mold release materials (C ₁ , C ₂ ) that have passed through the heating step are sandwiched between the constituent materials, while the entire pair of pressure rolls (r ₁ , r ₂ ) A thermocompression process introduced into the
After the hot pressing step, the thermoplastic liquid crystal polymer film (F) in contact with, the releasing member (C _1, C _2), and a releasing member (C _1, C ₂₎ of the pair of the pair by the at least one of the peeling rolls and The manufacturing method of a metal clad laminated body equipped with at least the peeling process in which / or metal foil (M) peels, respectively, and the said adjacent metal foil (M) and metal foil (M) peel. The method of claim 1,
A method for producing a metal-clad laminate, wherein the thermoplastic liquid crystal polymer film (F) is in contact with any one or both of the pair of mold release materials (C ₁ , C _{2 ).} The method of claim 1,
For any one or both of the releasing member (C _1, C ₂₎ of said pair, a metal foil method for producing a metal clad laminate, which (M) is in contact. 3. The method according to claim 1 or 2,
In the thermocompression bonding step, between the pair of pressure rolls (r ₁ , r ₂ ), (r ₁ )/(C ₁ )/(F)/(M)/(M)/(F)/( C ₂ ) / (r ₂ ) is superimposed in the order of thermocompression is performed,
In the above separation _{process, (C 1) / (F} ) _{between, (F) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the two metal clad laminate, the metal-coated laminate manufacturing method. 3. The method according to claim 1 or 2,
In the thermocompression bonding step, between the pair of pressure rolls (r ₁ , r ₂ ), (r ₁ )/(C ₁ )/(F)/(M)/(M)/(F)/( M) / (M) / (F) / (C ₂ ) / (r ₂ ) is superimposed in the order of thermocompression is performed,
In the above separation _{process, (C 1) / (F} ) _{between, (F) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the three metal clad laminate, the metal-coated laminate manufacturing method. 4. The method of claim 1 or 3,
In the thermocompression step, (r ₁ )/(C ₁ )/(M)/(F)/(M)/(M)/(F) between the pair of pressure rolls (r ₁ , r _{2 )} )/(M)/(C ₂ )/(r ₂ ) are superimposed in the order of thermocompression,
In the above separation _{process, (C 1) / (M} ) _{between, (M) / (C 2} ) , and between the (M) / (M) and peeling between obtaining the two metal clad laminate, the metal-coated laminate manufacturing method. 4. The method of claim 1 or 3,
In the thermocompression bonding step, (r ₁ )/(C ₁ )/(M)/(F)/(M)/(M)/(F) between the pair of pressure rolls (r ₁ , r _{2 )} )/(M)/(M)/(F)/(M)/(C ₂ )/(r ₂ ) are superimposed in the order of thermocompression compression,
In the peeling step, a _{metal-clad laminate is obtained by peeling between (C 1} )/(M), between (M)/(C ₂ ), and between (M)/(M), to obtain three metal-clad laminates. manufacturing method. 4. The method according to any one of claims 1 to 3,
A method for producing a metal-clad laminate, wherein the mold release material (C ₁ ) and/or the _{mold release material (C 2} ) is a mold release material selected from the group consisting of a heat-resistant resin film, a heat-resistant composite film, and a heat-resistant nonwoven fabric. 4. The method according to any one of claims 1 to 3,
In the heating step, the pair of release materials (C ₁ , C ₂ ) are unwound from the release material unwinding roll _{, and circumscribed with respect to the pair of pressure rolls (r 1} , r ₂ ), respectively, so that each release material is heated The manufacturing method of the metal-clad laminate which becomes. 10. The method of claim 9,
In the heating step, the pair of mold release materials (C ₁ , C ₂ ) is in contact with the pair of pressure rolls (r ₁ , r ₂ ) by circumscribed contact is 1.0 second or more, metal-clad laminate manufacturing method. 10. The method of claim 9,
In addition, a pair of guide rolls (g ₁ , g ₂ ) for circumscribing the pair of release materials (C ₁ , C ₂ ) with respect to the pair of pressure rolls (r ₁ , r ₂ ) is provided, A method for manufacturing a metal-clad laminate. 4. The method according to any one of claims 1 to 3,
In addition, the manufacturing method of the press roll of the pair (r _1, r ₂₎ for which a cooling roll to cool the laminated body passes, the metal-coated laminate. 4. The method according to any one of claims 1 to 3,
A method for producing a metal-clad laminate, wherein the peel strength of the thermoplastic liquid crystal polymer film (F) and the mold release member (C ₁ ) or the mold _{release member (C 2 ) after thermocompression compression is 0.6 kN/m or less.} 4. The method according to any one of claims 1 to 3,
After hot pressing the metal foil (M) and a releasing member (C ₁₎ or the releasing member (C ₂₎ method of less than or equal to, metal-coated laminate of 0.3 kN / m The peel strength. 4. The method according to any one of claims 1 to 3,
The peeling strength of the metal foil (M) and metal foil (M) after thermocompression bonding is 0.3 kN/m or less, The manufacturing method of a metal clad laminate.

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