JP6649366B2 - Flexible print laminate manufacturing apparatus and flexible print laminate manufacturing method - Google Patents

Description

  The present invention relates to an apparatus for manufacturing a flexible printed laminate and a method for manufacturing a flexible printed laminate.

  In a method of manufacturing a flexible printed laminate by attaching copper foil to both sides of a base material made of polyimide, a copper foil is placed on both sides of the base material, and then heated with a high-temperature metal roll. There is a method of laminating. However, in such a heat lamination, the metal roll directly contacts the copper foil. For this reason, dents may be formed on the surface of the copper foil due to the influence of foreign matter or the like attached to the surface of the metal roll.

  To solve such a problem, for example, there is a technique disclosed in Patent Document 1. In this method, heat lamination is performed using a high-temperature metal roll in a state where a protective film is overlaid on a copper foil. In the technique disclosed in Patent Document 1, since a protective film is interposed between the copper foil and the metal roll, the copper foil does not directly contact the metal roll. Therefore, dents are prevented from being formed on the copper foil. After the completion of the heat lamination, the unnecessary protective film is peeled off from the copper foil.

WO2005 / 063467

  2. Description of the Related Art In recent years, a flexible printed circuit board formed from a flexible printed circuit board is often used by being bent inside a device such as an electronic device. In such a case, it is required that the copper foil be hardly cut or broken even when bent. Therefore, it is assumed that a copper foil (hereinafter, referred to as a highly bent body) that achieves high flexibility by controlling the crystal structure of copper is used. However, when such a highly bent body is used, the following problem becomes prominent.

  That is, the current rust-prevention treatment of copper foil uses zinc plating and chromate treatment, but in that case, the adhesion between the above-mentioned protective film and the copper foil is too strong. Therefore, when the protective film is peeled off, a phenomenon called waving occurs, in which the appearance of the flexible printed laminate looks wavy. The cause is that when the protective film is peeled off from the copper foil using a peeling roll, the copper foil in close contact with the protective film also slightly follows the protective film. However, when the copper foil reaches a limit at which the copper foil follows the protective film due to the tension of pulling the flexible printed laminate having the copper foil, the copper foil is peeled off from the protective film by a predetermined length at a time. Since such an operation is repeated, a ripple is formed on the appearance of the product.

  Here, the rust-prevention treatment of copper foil using zinc plating and chromate treatment may be changed to a rust-prevention treatment mainly using nickel plating or cobalt plating. In that case, the waving when the protective film is peeled off can be reduced. However, the rust preventive layer formed by these rust preventive treatments is inferior in etching properties in the manufacturing process of the flexible printed laminate, or poor in adhesion to the dry film in the dry film attaching process. Therefore, it is in a state where it is difficult to change to a rust prevention treatment mainly using nickel plating or cobalt plating.

  By the way, in the rust prevention treatment using zinc plating and chromate treatment, if the above-mentioned undulations are formed, the positional accuracy in forming a through hole or the like in a portion where the undulations occur deteriorates. Would. In the worst case, there is a possibility that the perforated portion may open outside the land, causing a land breakage defect. In order to prevent waving that may cause such a defect, it is conceivable to increase the tension of pulling the flexible printed laminate. However, in such a case, the residual stress remaining in the flexible printed laminate increases, although the undulation tends to be eliminated. Therefore, there is a problem that the dimensional stability of the flexible printed laminate deteriorates.

  The present invention has been made based on the above-described circumstances, and an object of the present invention is to provide a flexible printed laminate manufacturing apparatus capable of favorably eliminating waving and without increasing residual stress in the flexible printed laminate. And a method for producing a flexible printed laminate.

  According to a first aspect of the present invention, there is provided an apparatus for manufacturing a flexible printed circuit board, comprising a substrate made of polyimide and a copper foil layer on at least one surface thereof. Laminating means for laminating a copper foil provided with a rust-preventing layer that exhibits a rust effect, and at least one rust-preventing layer at the same time as or before the lamination by the laminating means. Of which, a protective film is disposed on the surface opposite to the copper foil layer, and a film sticking means for sticking the rust preventive layer and the protective film while heating to a predetermined temperature, and an intermediate product generated by the film sticking means However, from the temperature control means for performing temperature control, and an intermediate product whose temperature is controlled by the temperature control means, so as to maintain an appropriate time of 40 seconds to 80 seconds within an appropriate temperature range of 200 degrees to 230 degrees. And peeling means for peeling the protective film from the anticorrosive layer, the manufacturing apparatus of a flexible printed laminate, characterized in that it comprises a are provided.

  According to another aspect of the present invention, in the above-described invention, the laminating means includes a pair of laminating rolls for heating the base material and the copper foil to a predetermined temperature while pressing the laminating roll, and the laminating roll is used for attaching a film. The temperature control means is a temperature control roll that controls the temperature of the intermediate product while contacting the intermediate product, and the temperature control roll is heated or cooled with respect to the temperature control roll. A roll temperature adjusting mechanism for adjusting the temperature of the roll, and when the temperature adjusting roll comes into contact with the intermediate product, the temperature adjusting roll is adjusted to a temperature within an appropriate temperature range so that the intermediate product has a temperature within the appropriate temperature range. And control means for controlling the operation of the roll temperature adjusting mechanism so that the temperature is increased only in the extra temperature range.

  Further, another aspect of the present invention is the above-mentioned invention, wherein the temperature control means includes: an intermediate product in a temperature control zone for maintaining the temperature of the intermediate product delivered from the temperature control roll within an appropriate temperature range. It is preferable that the control means controls the operation of the downstream temperature adjusting means so that the intermediate product has a temperature within an appropriate temperature range.

  Further, according to another aspect of the present invention, in the above-described invention, it is preferable that the peeling means includes a peeling roll for peeling the protective film from at least one rust preventive layer.

  Further, according to a second aspect of the present invention, there is provided a method for producing a flexible printed laminate, comprising a method of producing a rust-proofing effect on a surface of a copper foil layer on at least one surface of a substrate made of polyimide. A laminating step of laminating the copper foil on which the rust layer is provided, and simultaneously with or before the laminating in the laminating step, the copper foil layer of the at least one rustproof layer is On the opposite surface, a protective film is arranged, a film attaching step of attaching the rust preventive layer and the protective film while heating to a predetermined temperature, and an intermediate product generated by the film attaching step is 40 seconds to 80 seconds. A temperature adjustment step of adjusting the temperature so that the appropriate time of second is maintained within an appropriate temperature range of 200 to 230 degrees, and an intermediate product whose temperature is adjusted in the temperature adjustment step Al, a peeling step of peeling the protective film from the anticorrosive layer, the production method of a flexible printed circuit laminate which is characterized in that it comprises is provided.

  ADVANTAGE OF THE INVENTION According to this invention, waviness can be eliminated favorably and it is not necessary to increase the residual stress in a flexible printed laminated board.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline | summary of the manufacturing apparatus of the flexible printed laminated board which concerns on one Embodiment of this invention. It is a sectional view showing the composition of the flexible printed laminated board concerning one embodiment of the present invention. FIG. 3 is a cross-sectional view illustrating a configuration of a laminate to which a protective film is attached, which is an intermediate product formed in a process of manufacturing the flexible printed laminate illustrated in FIG. 2. FIG. 4 is a partial cross-sectional view showing a state where a portion A in FIG. 3 is enlarged. FIG. 3 is a diagram for explaining a cause of the occurrence of waving of the flexible printed laminate shown in FIG. 2, and is a diagram showing a behavior when the flexible printed laminate passes between a peeling roll and a pass roll. It is a figure showing an experimental result which evaluated dimensional stability of a flexible printed laminated board. It is a graph for showing whether the state of corrugation changes when the material of the rust prevention layer of a flexible printed laminate is changed. In the apparatus for manufacturing a flexible printed laminate shown in FIG. 1, the temperature control roll, the heat retaining temperature of the laminate when passing through the temperature control zone, and the value of I-unit when the heat retention time is variously changed. FIG. FIG. 9 is a diagram showing a state of a temperature change when each of samples 3 to 8 in FIG. 8 passes through a flexible printed laminate manufacturing apparatus. It is a figure which shows the state which has pinched the small diameter peeling roll by the pass roll and the backup roll.

  Hereinafter, a manufacturing apparatus 10 of a flexible printed laminate 50 according to an embodiment of the present invention will be described with reference to the drawings.

<1. Overview of Flexible Printed Laminate Manufacturing Equipment>
FIG. 1 is a diagram showing an outline of a manufacturing apparatus 10 (hereinafter, referred to as a manufacturing apparatus 10) of a flexible printed laminate 50. The manufacturing apparatus 10 includes supply rolls 21 to 25, a pair of laminating rolls 26a and 26b, a temperature control roll 27, a temperature control zone 28, a temperature control device 29, an intermediate roll 30, and a first peeling roll 31a. A first pass roll 31b, a second peel roll 32a, a second pass roll 32b, film take-up rolls 33a and 33b, a laminate take-up roll 34, a control unit 40 for controlling the operation of these rolls, And temperature sensors TS1 to TS6 for measuring the temperature.

  This manufacturing apparatus 10 is supplied with a base material 51, copper foils 52a and 52b, and protective films 53a and 53b. Then, in the manufacturing apparatus 10, after performing the thermal lamination, the protective films 53a and 53b are peeled off from the flexible printed laminate with the protective films 53a and 53b. The manufacturing apparatus 10 is also called a five-axis heat laminating machine.

<2. Components of Flexible Printed Laminate Manufacturing Equipment>
Hereinafter, the configuration of each unit of the manufacturing apparatus 10 will be sequentially described. In addition, in the description of the manufacturing apparatus 10, the description will be made along the transport path when manufacturing the flexible printed laminate 50. The supply rolls 21 to 25 supply the material wound in a roll shape. Specifically, the base material 51 is wound around the base supply roll 21 in a roll shape, and the copper foils 52 a and 52 b are wound around the copper foil supply rolls 22 and 23 in a roll shape. The protective films 53a and 53b are wound around the protective film supply rolls 24 and 25 in a roll shape.

  And each material (base material 51, copper foil 52a, 52b, protective film 53a, 53b) pulled out from these base supply rolls 21-25 is supplied toward a pair of lamination roll 26a, 26b.

  The pair of lamination rolls 26a and 26b are, for example, rolls made of metal, and perform a so-called thermal lamination in which each material supplied from the upstream side is pressed with a predetermined pressing force while being heated to a predetermined temperature. It is. For this purpose, the pair of laminating rolls 26a and 26b are heated by a heater 261 such as a sheath heater mounted near the shaft, for example. By the heating by the heater 261, the material is thermally laminated at a temperature within a range of 350 to 400 degrees (corresponding to a laminating step).

  At this time, not only the copper foils 52a and 52b are laminated on the base material 51, but also the protective films 53a and 53b are attached to the copper foils 52a and 52b (corresponding to the film attaching step). However, this temperature can be appropriately changed according to the state of the laminate. The pair of laminating rolls 26a and 26b correspond to a heating unit, a laminating unit, and a film sticking unit.

  Further, the laminate 54 (corresponding to the intermediate product) in which the respective materials are integrally bonded by the pair of laminate rolls 26a and 26b is directed to the temperature control roll 27, and the temperature is controlled by the temperature control roll 27. (Corresponding to the temperature adjustment step). The temperature control roll 27 is maintained at a temperature within the proper temperature H and for a proper time T until the laminate 54 reaches a first peeling roll 31a and a second peeling roll 32a described later. So as to control the temperature. For this purpose, for example, a heater such as a sheathed heater or a pipe for flowing a cooling medium such as water, oil, or air around the shaft portion and cooling it with a chiller or a unit cooler is provided in the temperature control roll 27. A temperature control mechanism 271 is provided.

  Note that the roll temperature adjusting mechanism 271 may be provided in a portion other than the shaft portion of the temperature adjusting roll 27. Further, in addition to the roll temperature adjusting mechanism 271, the temperature adjusting roll 27 may be provided with a measuring means for measuring temperature, such as a radiation thermometer or a thermocouple. Based on the measurement by the measuring means, The operation of the roll temperature adjustment mechanism 271 may be feedback-controlled by the control unit 40. Further, the temperature adjusting roll 27, the roll temperature adjusting mechanism 271, a temperature adjusting device 29 described later, and the control unit 40 correspond to a part of the temperature adjusting means.

  For example, when the temperature of the stacked body 54 has dropped to 250 to 260 degrees immediately before reaching the temperature adjusting roll 27, the control unit 40 controls the operation of the roll temperature adjusting mechanism 271 to control the temperature adjusting roll 27. Is provided to be approximately 10 degrees higher than the temperature. Conversely, if the temperature of the laminate 54 is too high immediately before reaching the temperature control roll 27, the temperature control roll 27 is provided to be lower than the lower limit temperature of the appropriate temperature H, The temperature of the stacked body 54 is reduced.

  The laminate 54 that has passed through the temperature control roll 27 subsequently passes through a temperature control zone 28, where temperature control is also performed (corresponding to a temperature control step). A temperature control device 29 is provided in the temperature control zone 28, and the temperature of the laminate 54 is controlled by the temperature control device 29 so that the temperature of the stacked body 54 becomes an appropriate temperature. In FIG. 1, the temperature control zone 28 is a region surrounded by a two-dot chain line, but the two-dot chain line does not indicate a member such as an enclosure or the like. Is shown. However, an enclosure may be provided at a site indicated by a two-dot chain line. When the laminated body 54 reaches the first peeling roll 31a and the second peeling roll 32a, the temperature adjusting device 29 is kept at a proper temperature H suitable for peeling the protective films 53a and 53b for a proper time T. The temperature of the laminate 54 is adjusted so as to be maintained. Note that the temperature adjusting device 29 corresponds to a downstream-side temperature adjusting unit.

  For example, the temperature control device 29 includes a heater such as a ceramic heater, and heats the laminate 54 so that the laminate 54 has an appropriate temperature H. The first peeling roll 31a and the second peeling roll 32a may be reached within the appropriate time T. Contrary to the above, the temperature controller 29 lowers the temperature of the laminate 54 so that the temperature of the laminate 54 becomes the proper temperature H, and within the range of the proper temperature H and the proper time T May reach the first peeling roll 31a and the second peeling roll 32a.

  As described above, the stacked body 54 reaches the portion where the first peeling roll 31a and the first pass roll 31b face each other via the intermediate roll 30. In order to satisfactorily peel off the protective film 53a, the first peeling roll 31a and the first pass roll 31b press the laminate 54 with an appropriate pressing force. Then, the protective film 53a is peeled off from the copper foil 52a by moving so as to follow the first peeling roll 31a (corresponding to a peeling step).

  The peeled protective film 53a is wound by a film winding roll 33a.

  The laminate 54 from which the protective film 53a has been peeled subsequently reaches a portion where the second peeling roll 32a and the second pass roll 32b face each other. The second peeling roll 32a and the second pass roll 32b also press the laminate 54 with an appropriate pressing force in order to satisfactorily peel off the protective film 53b. Then, the protective film 53b is peeled from the copper foil 52b by moving so as to follow the second peeling roll 32a (corresponding to a peeling step). The peeled protective film 53b is taken up by a film take-up roll 33b.

  In the following description, when the first peeling roll 31a and the second peeling roll 32a are collectively referred to as the peeling rolls 31a and 32a, they may be referred to as the first pass roll 31b and the second pass roll 32b. May be collectively referred to as pass rolls 31b and 32b. The peeling rolls 31a and 32a correspond to the peeling means. For the peeling rolls 31a and 32a, for example, a rubber roller can be used, or a metal roller such as SUS304 can be used. It is.

  By peeling the protective films 53a and 53b as described above, the flexible printed laminate 50 as a product is formed, and the flexible printed laminate 50 is wound by the laminate winding roll.

  The film take-up rolls 33a and 33b and the laminate take-up roll 34 are driven by a drive unit (not shown) such as a motor or the like, and driven by the drive unit, the protective films 53a and 53b and the flexible print are driven. A tensile force for winding the laminate 50 is provided. The control unit 40 corresponds to a control unit. The control unit 40 includes a heater 261, a roll temperature adjustment mechanism 271, an operation of the temperature adjustment device 29, and a drive unit such as a motor provided on various rolls. If so, the driving of the driving means is controlled by feedback control or the like.

  The temperature sensors TS1 to TS6 are sensors for measuring the temperature of the stacked body 54 being transported. Among these temperature sensors TS1 to TS6, the temperature sensor TS1 measures the temperature of the stacked body 54 between the pair of laminate rolls 26a and 26b and the temperature adjustment roll 27. The temperature sensor TS2 measures the temperature of the stacked body 54 while passing through the temperature control roll 27 (in a state of being wound around the temperature control roll 27). The temperature sensor TS3 measures the temperature of the laminate 54 between the temperature control roll 27 and the temperature control zone 28. The temperature sensor TS4 measures the temperature of the stacked body 54 passing through the temperature control zone 28. The temperature sensor TS5 measures the temperature of the laminated body 54 while passing through the intermediate roll 30 (in a state of being wound around the intermediate roll 30). Further, the temperature sensor TS6 measures the temperature of the laminate 54 between the intermediate roll 30 and the peeling roll 31a (pass roll 31b).

  Here, in FIG. 1, a portion that is a path along which the stacked body 54 is transported in the current manufacturing apparatus and which is different from the route through which the stacked body 54 according to the present embodiment is transported is indicated by a broken line. When the stacked body 54 is transported along the transport path indicated by the broken line, before reaching the appropriate time T, the stacked body 54 reaches a position where the peeling roll 31a and the first pass roll 31b face each other.

<3. Configuration of Flexible Printed Laminates>
Subsequently, a configuration of the flexible printed laminate 50 which is a product manufactured by the above-described manufacturing apparatus 10 will be described. FIG. 2 is a cross-sectional view showing the configuration of the flexible printed laminate 50. The flexible printed laminate 50 of the present embodiment includes a base material 51 and copper foils 52a and 52b. The base material 51 has a base material layer 51a made of, for example, thermosetting polyimide. Adhesive layers 51b and 51c are provided on both sides of the base material layer 51a. The adhesive layers 51b and 51c are made of, for example, thermoplastic polyimide and have a glass transition temperature of approximately 240 degrees. The overall thickness of the base member 51 is, for example, about 9 to 25 μm.

  The material of the base material 51 can be other than polyimide as long as it has flexibility and insulating properties. Further, for the adhesive layers 51b and 51c, other adhesives such as an epoxy-based adhesive and an acrylic-based adhesive can be used in addition to the thermoplastic polyimide.

  FIG. 3 is a cross-sectional view showing a structure of a laminate 54 to which protective films 53a and 53b are attached, which is an intermediate product formed in the process of manufacturing the flexible printed laminate 50. FIG. 4 is a partial cross-sectional view showing a state in which a portion A in FIG. 3 is enlarged.

  Copper foils 52a and 52b are adhered to the front and back surfaces of the base material 51 by the above-described adhesive layers 51b and 51c. The copper foils 52a and 52b have a thickness of, for example, about 6 to 18 μm. Further, on the shine surface and the mat surface of the copper foils 52a and 52b, there are provided rust prevention layers 52c formed by performing a chromate treatment on zinc plating, respectively. That is, the rust prevention layers 52c are provided on both surfaces of the copper foil layers (reference numerals are omitted) in the copper foils 52a and 52b. In the zinc-chromium plating forming the rust-preventive layer 52c, more than half of zinc is contained. FIG. 4 shows the rust-proof layer 52c between the copper foil 52a and the protective film 53a, but between the copper foil 52a and the adhesive layer 51b, between the copper foil 52b and the protective film 53b, and between the copper foil 52b and the protective film 53b. A similar rust-preventive layer 52c exists between the rust-proof layer 52c and the adhesive layer 51c. Note that the matte surfaces of the copper foils 52a and 52b are generally subjected to a roughening treatment and a rust preventive treatment for improving the bonding reliability. Documents and processing volume of processing may be different.

  Then, when the flexible printed laminate 50 having such a configuration is manufactured using the current manufacturing apparatus, a phenomenon called wavy occurs in which the appearance of the flexible printed laminate 50 looks wavy.

  FIG. 5 is a diagram for explaining the cause of the occurrence of waving of the flexible printed laminate 50, and shows the behavior when the flexible printed laminate 50 passes between the rolls 31a, 32a and the pass rolls 31b, 32b. It is. As shown in FIG. 5, when the protective films 53a and 53b are peeled off from the copper foils 52a and 52b, the protective films 53a and 53b are not immediately peeled off from the copper foils 52a and 52b, but are slightly applied to the protective films 53a and 53b. Follow. However, when the copper foils 52a and 52b reach the limit of the protection films 53a and 53b due to the winding tension that pulls the flexible printed laminate 50, the copper foils 52a and 52b are moved by a predetermined length at a time. Peels off. Therefore, when the copper foils 52a and 52b are thin and have low tensile strength (low tensile strength) such as a highly bent body, the copper foils 52a and 52b are deformed, and the deformation causes the flexible printed laminate 50 to undulate. It looks like

  Here, as a method for solving the waving of the flexible printed laminate 50 as described above using the current manufacturing apparatus, the winding tension of the laminate 54 to which the protective films 53a and 53b are attached is increased. It is possible. That is, it is considered that if the winding tension applied to the laminate 54 is increased, the waving in the appearance of the flexible printed laminate 50 is reduced. Based on this idea, an experiment was performed with the winding tension set to 400 N from the current winding tension of 100 N. As a result, the wavy appearance was reduced.

  However, when the winding tension is increased as described above, a problem as shown in FIG. 6 occurs. FIG. 6 is a view showing an experimental result of evaluating the dimensional stability of the flexible printed laminate 50. In FIG. 6, an experiment is performed on a flexible printed laminate 50 having two different thicknesses. One of them is that the copper foils 52a and 52b of the flexible printed laminate 50 have a thickness of 1/2 oz (about 17.5 μm), and the base material 51 has a thickness of 1 mil (about 25.4 μm) ( Hereinafter, the flexible printed laminate 50 having this thickness is referred to as Sample 1.) The other one of the two types of flexible printed laminates 50 is that the copper foils 52a and 52b of the flexible printed laminate 50 have a thickness of 1/3 oz (about 12 μm). The thickness is 1 mil (about 25.4 μm) (hereinafter, the flexible printed circuit board 50 having this thickness is referred to as a sample 2).

  In these two types of flexible printed laminates 50, the copper foils 52a and 52b have a matte surface roughness Rz of 0.8 μm, a tensile strength of 150 MPa, an elongation at break of 7%, a Young's modulus of 30 GPa, and a bending radius. The bending characteristic at R = 2.5 mm is 1.5 million times. Further, the protective films 53a and 53b have a thickness of 5 mil (about 125 μm).

  In FIG. 6, the vertical axis indicates dimensional stability (Dimensional Stability). In the horizontal axis, MD indicates the longitudinal direction (Machine Direction) of the flexible printed laminate 50, and TD indicates the width direction (Transverse Direction) of the flexible printed laminate 50.

  In the measurement of the dimensional stability shown in FIG. 6, the measurement was performed using the following samples (samples 1 and 2) of the flexible printed laminate 50. Specifically, after winding with a predetermined winding tension, the flexible printed laminate 50 was cut out such that the dimension in the MD direction (transport direction) was 200 mm and the dimension in the TD direction (width direction) was 250 mm. . Then, a through-hole having a diameter of 1.0 mm was formed in the cut-out flexible printed laminate 50 at intervals of 50 mm in the MD direction and the TD direction to obtain a sample. And it left for 24 hours or more in the environment of constant temperature and humidity of RH (relative humidity) of 65% at 20 ° C, and then measured the distance between each through-hole. In addition, this measurement was measured using a measuring device called ZIP300 manufactured by Optical Gaging Products. Then, after the measured sample was etched and the copper foil on both sides was completely removed, the sample was left again for 24 hours or more in an environment of constant temperature and humidity of RH (relative humidity) of 65% at 20 ° C. Then, the distance between the through holes was measured in the same manner as described above, and the rate of change was calculated.

  In this experiment, two experiments were performed for the sample 1 with the winding tension of 400N and 100N. However, for the sample 2, the winding tension was 400N and 200N. And three cases of 100N.

  As is clear from FIG. 6, in both the sample 1 and the sample 2, when the winding tension is 400 N, the dimensional change rate due to shrinkage is particularly large in the longitudinal direction as compared with the case where the winding tension is 100 N. Therefore, the dimensional stability is poor. For this reason, in a post-process using the flexible printed laminate 50, pattern exposure is performed, and the position of the pattern after etching may be largely shifted from the position where the pattern exposure is performed. In this case, if a through-hole is formed based on the position of the pattern exposure, the through-hole may be displaced from the land or the positioning at the time of mounting may not be performed. Therefore, if the winding tension is increased in order to reduce the wavy appearance, the dimensional stability deteriorates, which is not practical.

  In sample 2, when the winding tension is 200 N and when the winding tension is 100 N, when the winding tension is 100 N, the MD direction (transport direction; longitudinal direction) and the TD direction Both dimensional change rates (in the width direction) are within the range of ± 0.05%. On the other hand, when the winding tension is 200 N, the dimensional change rate in the MD direction (transport direction; longitudinal direction) exceeds −0.10%, and the dimensional change rate in the TD direction (width direction) is also − It has reached just under 0.10%. Therefore, it can be seen that the dimensional stability is poor even when the winding tension is 200N.

  Therefore, in order to reduce such waving, various investigations and experiments were conducted, and as a result, the following ingenuity was obtained.

<4. Estimation of the cause of the decrease in the peelability of the protective film>
First, in order to reduce the waving, the cause of the decrease in the peelability of the protective films 53a and 53b was estimated. For that purpose, the evaluation of waving on the surface of the flexible printed laminate 50 was performed using a non-contact laser displacement meter. At this time, the height profile in the longitudinal direction at a certain width position of the flexible printed laminate 50 was obtained, and the elongation ΔL was calculated from the path length of the height profile. At this time, the measurement length L was 400 mm. FIG. 7 shows the result. FIG. 7 is a graph for showing whether or not the waving state changes when the material of the rust prevention layer 52c is changed. In FIG. 7, I-unit on the vertical axis is an evaluation index of undulation, and the larger the value, the greater the undulation. This I-unit is obtained by the following equation.
I-unit = (ΔL / L) × 10 ⁵
Here, L is the shortest distance between two distant points that remain wavy in the longitudinal direction of the flexible printed laminate 50, and ΔL is the amount of elongation of the flexible printed laminate 50 between the two points. is there.

  As is clear from FIG. 7, the value of I-unit is as large as about 120 in the rust preventive layer 52c formed by the zinc plating and the chromate treatment as described above. On the other hand, when the rust preventive layer 52c is not provided, the value of I-unit is as small as less than 60, and when the rust preventive layer 52c is formed of nickel-cobalt plating, the value of I-unit is small. Is about 50, which is the smallest.

  According to these results, the value of I-unit is large when zinc is contained in the plating component, and the value of I-unit is small when zinc is not contained. You can see that. Further, the melting point of zinc, 419.5 ° C., is close to the temperature of 350 to 400 ° C., which is the temperature at the time of laminating, and therefore, the zinc in the zinc plating after the chromate treatment is reduced by pressurization and heating at the time of lamination. It is presumed that this is due to close contact with the protective films 53a and 53b. That is, it is presumed that the reason why the peelability of the protective films 53a and 53b is reduced is that zinc in the components of the rust preventive layer 52c adheres to the protective films 53a and 53b.

  According to the results shown in FIG. 7, it is conceivable to adopt a method of not providing the rust-proof layer 52c or a method of forming the rust-proof layer 52c from nickel-cobalt plating. However, when the rust preventive layer 52c is not provided, discoloration due to oxidation occurs in the rust preventive layer 52c due to heating by lamination. When the rust-preventive layer 52c is formed of nickel-cobalt plating, the ripples generated when the protective films 53a and 53b are peeled off can be reduced, but problems such as the nickel-cobalt plating cannot be removed well during etching. Will happen. Therefore, while forming the rust-preventive layer 52c by zinc plating and chromate treatment, it was examined to control the adhesion by another method.

<5. Temperature verification (experiment) to improve the peelability of protective film>
Next, in order to improve the peelability of the protective films 53a and 53b, it was examined to adjust the temperature condition. In this study (experiment), a laminate 54 cut into a strip having a width of 10 mm was used, and the strip laminate 54 was heated to a predetermined temperature as shown in Table 1 in a reflow furnace. After keeping the temperature for a predetermined time, an ironing test was performed with the protective film 53b peeled off. Here, in the reflow furnace, the surface temperature of the protective films 53a and 53b was measured using a thermocouple.

  Note that, for the laminate 54 when the ironing test was performed, a sample under the same conditions as those in FIG. 6 described above was used, and the protective film 53b was peeled off the sample as described above. Further, the sample described above is further cut out so that the dimension in the MD direction (transport direction) becomes 10 mm and the dimension in the TD direction (width direction) becomes 260 mm, and the cut out sample (hereinafter referred to as a strip-shaped sample) is placed in an oven or an oven. It was heated in a reflow furnace. Lead films are attached to both ends of the sample.

  In addition, the ironing test here is to wind the above-mentioned strip-shaped sample around a roll for ironing by 180 degrees, apply tension to the strip-shaped sample in this state, and reciprocate the strip-shaped sample until the protective film 53a is peeled off. Moved. At this time, the number of reciprocations was counted as one reciprocation. In this reciprocating motion, for example, the copper foil 52a is located on the outer peripheral side in the first reciprocating motion, but the bending direction is alternately changed so that the copper foil 52a is located on the inner peripheral side in the second reciprocating motion. Like that. The ironing roll had a diameter of 28 mm, and the forward and double strokes were each approximately 260 mm. In addition, in Table 1, for each cell at the intersection of any one of the heat retention temperatures and any one of the heat retention times, the ironing test was performed three times, and the average value was calculated. Table 1 shows the results of the ironing test.

  According to the results of Table 1 described above, if the temperature of the laminate 54 is kept at 200 to 230 degrees for only 40 seconds to 80 seconds, the number of reciprocations in the ironing test can be reduced. There was found. If the time during which the appropriate temperature H is maintained is shorter than 40 seconds, the number of reciprocating movements in which the protective films 53a and 53b are peeled off in the ironing test increases. It has been found that the number of reciprocating movements in the ironing test can be reduced.

  In addition, when the ironing test is performed at a temperature lower than 200 degrees, the number of reciprocating movements until the protective films 53a and 53b are peeled increases, and when the ironing test is performed at a temperature exceeding 230 degrees, the protective film It has been found that the number of reciprocating motions before the 53a and 53b come off increases.

  From this, it was found that the appropriate temperature H was 200 to 230 degrees and the appropriate time T was 40 to 80 seconds. Then, the same results were obtained when the results of the ironing test were reflected in the manufacturing apparatus 10 and the flexible printed laminate 50 was manufactured.

  Tables 2 to 5 show the results of experiments additionally performed on Table 1 separately. In an additional experiment, a laminate 54 cut into a strip having a dimension of 10 mm in the MD direction (transport direction) and a dimension of 260 mm in the TD direction (width direction) was used, and the strip laminate 54 was reflowed. After heating in a furnace to a predetermined temperature as shown in Tables 2 to 5 and keeping the same at the predetermined temperature for a predetermined time as shown in Tables 2 to 5, the ironing test was performed with the protective film 53b removed. went. An experiment was performed with lead films attached to both ends of the sample.

  In addition, the polyimide film which is the base material 51 is a Pixio BP FRS-142 (1 mil; about 25.4 μm) manufactured by Kaneka Corporation or a Pixio BP FRS-522 (also manufactured by Kaneka Corporation) (having a thickness of 1/2 mil (about 12.7 μm)). In addition, as the copper foils 52a and 52b, a rolled copper foil BHY-82F-HA (having a thickness of 1/2 oz (about 17.5 μm) or 1/3 oz (about 12 μm)) manufactured by JX Metal Co., Ltd. was used. Further, as the protective films 53a and 53b, Apical 125NPI (having a thickness of 5 mil (125 μm)) manufactured by Kaneka Corporation was used.

  The ironing roll in the additional experiment had a diameter of 28 mm, and was wound around the ironing roll by 180 degrees, and the laminate 54 was pulled so that the entire wound portion of the laminate 54 was bent. Was. The forward and double strokes were about 260 mm, respectively, and the reciprocating speed was 16 m / min. In Tables 2 to 5, ironing tests were performed three times for each cell at the intersection of one of the heat retention temperatures and one of the heat retention times, and the average value was calculated.

  In this ironing test, Table 2 shows the experimental results when the thickness of the base material 51 was 1 mil (about 25.4 μm) and the thickness of the copper foils 52a and 52b was 1/2 oz (about 17.5 μm). Show.

  In the ironing test described above, the experimental results in the case where the thickness of the base material 51 was 1/2 mil (about 12.7 μm) and the thickness of the copper foils 52 a and 52 b were 1/2 oz (about 17.5 μm) were obtained. , And Table 3.

  Table 4 shows the experimental results when the thickness of the base material 51 was 1 mil (about 25.4 μm) and the thickness of the copper foils 52 a and 52 b was ３ oz (about 12 μm) in the ironing test described above. Show.

  In the ironing test described above, the experimental results in the case where the thickness of the base material 51 is 1/2 mil (about 12.7 μm) and the thickness of the copper foils 52 a and 52 b are 1/3 oz (about 12 μm) are shown in the table. It is shown in FIG.

  According to the results of Tables 2 to 5, which are the additional experimental data described above, in any of the laminates 54 having any thickness, when the temperature is maintained at 200 to 230 degrees for 40 seconds to 80 seconds, the temperature of the laminate 54 increases. It has been found that the number of reciprocating movements in the test can be reduced. If the time during which the appropriate temperature H is maintained is shorter than 40 seconds, the number of reciprocating movements in which the protective films 53a and 53b are peeled off in the ironing test increases. It has been found that the number of reciprocating movements in the ironing test can be reduced.

  In addition, when the ironing test is performed at a temperature lower than 200 degrees, the number of reciprocating movements until the protective films 53a and 53b are peeled increases, and when the ironing test is performed at a temperature exceeding 230 degrees, the protective film It has been found that the number of reciprocating motions before the 53a and 53b come off increases.

  From this, it was found that the appropriate temperature H was 200 to 230 degrees and the appropriate time T was 40 to 80 seconds. Then, the same results were obtained when the results of the ironing test were reflected in the manufacturing apparatus 10 and the flexible printed laminate 50 was manufactured. In the manufacturing apparatus 10, the feed rate was different from that in the ironing test, and the feed rate could be variously changed. However, similar results were obtained in that case.

  FIG. 8 shows the temperature of the laminated body 54 when passing through the temperature control roll 27 and the temperature control zone 28 in the manufacturing apparatus 10 and the value of I-unit when the heat retention time is variously changed. FIG. FIG. 9 is a diagram illustrating a state of a temperature change when each of the samples 3 to 8 in FIG. 8 passes through the manufacturing apparatus 10 of the flexible printed laminate 50. In FIG. 9, the time during lamination (the time when the laminate 54 is still located between the pair of laminate rolls 26a and 26b) is 0 second, and thereafter, when the temperature passes through the temperature sensors TS1 to TS6. It shows a temperature change. Then, the heat retention time is calculated from the graph of FIG.

  In this case, the laminate 54 under the same conditions as those in FIG. 6 is used. Further, the surface pressure when each material passed through the pair of laminate rolls 26a and 26b was set to 10 kN, the feed speed was set to 1 m / min, and the lamination was performed so that the laminate 54 was at 380 degrees. The diameter of the first peeling roll 31a and the second peeling roll 32a was 70 mm.

  In FIG. 8, I-unit was measured for Samples 3 to 8. In sample 3, the temperature of the laminate 54 at the temperature control roll 27 was 190 degrees, and the temperature control zone 28 was not provided. In addition, the heat retention time until reaching the second peeling roll 32a at the above 190 degrees was 21 seconds. In sample 4, the temperature of the laminate 54 at the temperature control roll 27 was 230 degrees, and the temperature control zone 28 was not provided. In addition, at the above-mentioned 230 degrees, the heat retention time until reaching the second peeling roll 32a was set to 21 seconds.

  In sample 5, the temperature at the temperature sensor TS1 is 230 degrees, the temperature of the laminate 54 at the temperature control roll 27 is 230 degrees, the temperature of the laminate 54 at the temperature control zone 28 is 200 degrees, The heat retention time from when the temperature sensor TS1 reaches the outlet of the temperature control zone 28 was set to 60 seconds. In the sample 5 of FIG. 9, the temperature is kept in the temperature control zone 28 since the temperature is kept in the temperature control zone 28. On the other hand, the temperature of the sample 5 decreases toward the temperature sensor TS6 when the sample 5 leaves the temperature control zone 28. Therefore, in the sample 5, the temperature falls from the vicinity of the exit of the temperature control zone 28 where no temperature sensor exists to the temperature sensor TS6. In sample 6, the temperature of the laminate 54 at the temperature control roll 27 is 230 degrees Celsius, the temperature of the laminate 54 at the temperature control zone 28 is 230 degrees Celsius, and the temperature until the temperature reaches the second peeling roll 32a. The heat retention time was 45 seconds. In the sample 7, the temperature of the laminate 54 at the temperature control roll 27 is 230 ° C., the temperature of the laminate 54 at the temperature control zone 28 is 250 ° C., and reaches the second peeling roll 32a. The heat retention time until was 45 seconds. In sample 8, the temperature of the laminate 54 at the temperature control roll 27 is 250 degrees, the temperature of the laminate 54 at the temperature control zone 28 is 250 degrees, and the temperature until the temperature reaches the second peeling roll 32a. The heat retention time was 45 seconds.

  As is clear from the results in FIG. 8 described above, in the case of sample 5, the value of I-unit is as very small as about 40. Similarly, in the case of sample 6, the value of I-unit is as small as about 40 or less.

  On the other hand, in the case of sample 3, the value of I-unit is about 135, in the case of sample 4, the value of I-unit is about 120, and in the case of sample 7, The value of I-unit is about 70, and in the case of sample 8, the value of I-unit is about 75. Therefore, in the case of Samples 5 and 6, it was found that the waving of the flexible printed laminate 50 was reduced most, and the peelability of the protective films 53a and 53b was improved.

  As described above, from the results of Tables 1 to 5, FIG. 8 and FIG. 9, by giving a heat history of 200 to 230 degrees, which is the appropriate temperature H, within the range of the appropriate time T of 40 to 80 seconds, the protective film 53 a , 53b were found to be improved.

  Here, when the heat history of 200 to 230 degrees, which is the appropriate temperature H, is given within the range of the appropriate time T of 40 to 80 seconds, the cause of the improvement in the peelability of the protective films 53a and 53b is clearly described. Although it is not known, it can be inferred as follows. That is, when bonding is performed at high temperature and high pressure as in the case of thermal lamination with the pair of laminating rolls 26a and 26b, it is presumed that zinc in the components of the rust-preventive layer 52c has adhered to the protective films 53a and 53b as described above. Is done.

  On the other hand, in the case where the flexible printed laminate 50 is kept warm for the appropriate time T in the state where the temperature is adjusted to the appropriate temperature H after the lamination, it is presumed that a force acts to reduce the adhesive force at the time of lamination. However, it is presumed that if the temperature is maintained at a temperature lower than the appropriate temperature H, the adhesive force will not be relaxed while the thermocompression bonding is being performed. It is presumed that the force of reattachment becomes stronger due to the diffusion of the rust layer 52c and the like. Therefore, when a heat history for keeping the flexible printed circuit board 50 warm within the appropriate time T in a state where the temperature is the appropriate temperature H after lamination is given, the above-described force for relaxing the adhesive force and the re-adhesion It can be inferred that the power to be tried is balanced.

<6. Verification of peeling roll to improve the peelability of protective film (experiment)>
Further, apart from improving the peelability of the protective film 53a by adjusting the temperature conditions as described above, the peeling rolls 31a and 32a were verified. Specifically, an experiment was performed to determine whether changing the diameter of the peeling rolls 31a and 32a improves the peelability of the protective film 53a.

  In this experiment, as in the cases of Tables 1 to 5 described above, a laminate 54 cut into a strip having a dimension in the MD direction (transport direction) of 10 mm and a dimension in the TD direction (width direction) of 260 mm was used. An ironing test was performed using a metal ironing roll made of SUS304. However, temperature control such as heating was not performed on the laminate 54. In addition, the ironing roll of each diameter was subjected to an ironing test three times, and the average value of the reciprocating motion until the protective film 53a was peeled was calculated.

  The laminate 54 used in the ironing test has the same conditions as those in Table 1 described above. Also, the counting method and the like when performing the ironing test are the same as those in Table 1 described above. Table 6 shows the results of the ironing test.

  From the results in Table 6, it was found that when the diameter of the ironing roll was 7 mm, the number of reciprocating movements was one on average, and the protective film 53a was peeled off. When the ironing roll had a diameter of 10 mm, the number of reciprocating movements was 1.3 on average, and it was found that the protective film 53a was peeled off. Similarly, when the diameter of the ironing roll was 12 mm, the number of reciprocating motions was three times on average, and it was found that the protective film 53a was peeled off.

  In addition, in the case where the diameter of the ironing roll was 20 mm and 28 mm, it was found that the protective film 53a was peeled off with more than three reciprocating motions.

  From this experimental result, it was found that when the diameter of the ironing roll was set to 10 mm or less, the peelability of the protective film 53a was greatly improved. When the ironing roll has a diameter of 12 mm, the protective film 53a peels off when the number of reciprocating movements is three times on average, and the peelability is improved as compared with the case where the diameter is larger than that. However, by reducing the diameter of the ironing roll by 2 mm from 12 mm to 10 mm, the peelability of the protective film 53a is greatly improved.

  From this, it can be said that when the diameter of the peeling rolls 31a and 32a is 10 mm or less, the peelability of the protective film 53a can be greatly improved.

  Here, when the diameter of the peeling rolls 31a and 32a becomes small, there is a problem that the rigidity of the peeling rolls 31a and 32a is reduced and the rolls 31a and 32a are easily bent. Then, you may comprise as shown in FIG. FIG. 10 is a diagram illustrating a state in which small-diameter peeling rolls 31a and 32a made of metal such as SUS304 are sandwiched between pass rolls 31b and 32b and backup roll 33. As shown in FIG. 10, by sandwiching the small-diameter, low-rigidity peeling rolls 31a, 32a between the pass rolls 31b, 32b and the backup roll 33, it is possible to prevent the peeling rolls 31a, 32a from being easily bent.

<7. About effects>
According to the manufacturing apparatus 10 having the above-described configuration, the pair of laminating rolls 26a and 26b for laminating the copper foils 52a and 52b provided with the rust-proof layer 52c on both surfaces of the base material 51 are mounted. In addition, in the pair of laminate rolls 26a and 26b, protective films 53a and 53b are arranged on the surfaces of the copper foils 52a and 52b, and the rust prevention layer 52c and the protective films 53a and 53b are adhered while heating to a predetermined temperature. are doing. The laminated body 54 is provided with the temperature control roll 27 and the temperature control device 29 so that the appropriate time T of 40 seconds to 80 seconds is maintained within the range of the appropriate temperature H of 200 degrees to 230 degrees. Temperature control is performed in the control zone 28. Then, the protective films 53a, 53b are peeled from the rust preventive layer 52c by the peeling rolls 31a, 32a from the temperature-controlled laminate 54.

  In the case of such a configuration, by keeping the appropriate time T of 40 seconds to 80 seconds within the range of the appropriate temperature H of 200 degrees to 230 degrees with respect to the laminate 54, the protective film is peeled off by the peeling rolls 31a and 32a. Even if 53a and 53b are peeled off, it is possible to reduce the occurrence of wavy appearance in which the appearance of the flexible printed laminate 50 looks wavy. In particular, in a very soft high-bending body, such a reduction in waving becomes remarkable.

  Further, as shown in FIG. 6, the winding tension of the flexible printed laminate 50 does not need to be increased, so that an increase in residual stress in the flexible printed laminate 50 can be suppressed.

  Further, in the present embodiment, the pair of laminate rolls 26a, 26b also serves as a film sticking means. Can be formed.

  As temperature control means for controlling the temperature of the laminate 54, a temperature control roll 27 for controlling the temperature of the laminate 54 while being in contact with the laminate 54, and heating or cooling the temperature control roll 27. Thus, the roll temperature adjusting mechanism 271 for adjusting the temperature of the temperature adjusting roll 27 and, when the temperature adjusting roll 27 comes into contact with the stacked body 54, the temperature of the stacked body 54 is set to a temperature within the proper temperature H range. The control unit 40 controls the operation of the roll temperature adjustment mechanism 271 so that the temperature of the adjustment roll 27 is raised within a proper temperature range or an extra temperature range. For this reason, it is possible to control the temperature of the stacked body 54 so as to approach the range of the appropriate temperature H.

  Further, in the present embodiment, as the temperature adjusting means, the laminate 54 is heated or heated in the temperature adjustment zone 28 for maintaining the temperature of the laminate 54 sent out from the temperature adjustment roll 27 within the range of the appropriate temperature H. The temperature control device 29 for cooling is provided, and the control unit 40 controls the operation of the temperature control device 29 so that the temperature of the stacked body 54 is within the range of the appropriate temperature H. Therefore, when the laminate 54 is sent to the peeling rolls 31a and 32a, the temperature of the laminate 54 is reliably maintained at the appropriate temperature H for the above-described appropriate time T, so that the peelability of the protective films 53a and 53b is improved. Can be improved. Thereby, it is possible to reduce the occurrence of wavy appearance in which the appearance of the flexible printed laminate 50 looks wavy.

  Further, in the present embodiment, the peeling means includes peeling rolls 31a and 32a for peeling the protective films 53a and 53b from the rust preventive layer 52c. For this reason, the protective films 53a and 53b can be reliably and continuously peeled by making the protective films 53a and 53b follow the peeling rolls 31a and 32a.

<8. Modification>
As mentioned above, although one Embodiment of this invention was described, this invention can be variously deformed besides this. Hereinafter, this will be described.

  In the above-described embodiment, the configuration in which the copper foils 52a and 52b are arranged on both sides of the base material 51 of the flexible printed laminate 50 is described. However, a configuration in which a copper foil layer is disposed only on one side of the base material may be adopted as the flexible printed laminate.

  In the above-described embodiment, a configuration having the temperature control roll 27 and the temperature control zone 28 as the temperature control means has been described. However, if the proper temperature H is maintained within the proper time T before the laminate 54 reaches the peeling rolls 31a and 32a, the temperature control zone 28 including the temperature control device 29 is omitted. Thus, a configuration in which only the temperature control roll 27 exists as the temperature control means may be employed, or a configuration in which the temperature control roll 27 is omitted and only the temperature control zone 28 including the temperature control device 29 is present may be employed. good. Further, a temperature control zone 28 including a temperature control device 29 may be arranged at a position different from that in FIG.

  In the above-described embodiment, in addition to the base material 51 and the copper foils 52a and 52b, the protective films 53a and 53b are simultaneously adhered to the copper foils 52a and 52b when passing through the pair of laminate rolls 26a and 26b. ing. However, the protective films 53a and 53b may be bonded to the copper foils 52a and 52b before the base material 51 and the copper foils 52a and 52b are bonded.

  Further, heaters other than those described above may be used as the roll temperature adjusting mechanism 271 and the temperature adjusting device 29. For example, a heater such as a far-infrared heater or a heating wire may be used. Further, in the copper foils 52a and 52b, a configuration in which the rust prevention layer 52c exists only on the side on which the protective films 53a and 53b are attached may be employed.

  10: Flexible Printed Laminate Manufacturing Equipment, 21: Base Supply Roll, 22, 23 ... Copper Foil Supply Roll, 24, 25 ... Protective Film Supply Roll, 26a, 26b ... Laminate Roll (Laminating Means, Heating Means, Film Pasting Means) , 27: Temperature control roll (corresponds to part of temperature control means), 28: Temperature control zone (corresponds to part of temperature control means), 29: Temperature control device (part of temperature control means, downstream) 30 ... intermediate roll, 31a ... first peeling roll 31a (corresponding to peeling means), 31b ... first pass roll, 32a ... second peeling roll (corresponding to peeling means), 32b ... second Pass roll, 33 ... Backup roll, 33a, 33b ... Film take-up roll, 34 ... Laminated board take-up roll, 40 ... Control unit (part of temperature control means, 50 ... Flexible printed laminate, 51 ... Base, 51a ... Base layer, 51b, 51c ... Adhesive layer, 52a, 52b ... Copper foil, 52c ... Rust prevention layer, 53a, 53b ... Protective film , 54: laminate (corresponding to an intermediate product), 261: heater, 271: roll temperature control mechanism (corresponds to a part of temperature control means)

Claims (5)

An apparatus for manufacturing a flexible printed laminate,
Laminating means for laminating a copper foil on which at least one surface of a substrate made of polyimide is placed while placing a copper foil provided with a rust-preventive layer on the surface of the copper foil layer,
Simultaneously with or before the lamination by the laminating means, a protective film is disposed on the surface of the at least one rust-preventive layer opposite to the copper foil layer, and heated to a predetermined temperature. Film sticking means for sticking the rust prevention layer and the protective film,
Temperature adjusting means for adjusting the temperature so that the intermediate product generated by the film sticking means maintains an appropriate time of 40 seconds to 80 seconds within an appropriate temperature range of 200 degrees to 230 degrees.
From the intermediate product whose temperature has been adjusted by the temperature adjusting unit, a peeling unit that peels the protective film from the rust-preventive layer,
An apparatus for manufacturing a flexible printed laminate, comprising: An apparatus for manufacturing a flexible printed laminate according to claim 1,
The laminating means includes a pair of laminating rolls for heating the base material and the copper foil to a predetermined temperature while applying pressure, and the laminating rolls also serve as the film sticking means.
The temperature adjusting unit adjusts the temperature of the temperature adjusting roll by heating or cooling the temperature adjusting roll, which adjusts the temperature of the intermediate product while being in contact with the intermediate product. A roll temperature control mechanism, and when the temperature control roll comes into contact with the intermediate product, the temperature control roll is moved to the appropriate temperature range or higher so that the intermediate product has a temperature within the appropriate temperature range. Control means for controlling the operation of the roll temperature adjusting mechanism so that the temperature is increased only by an extra temperature range;
Has,
An apparatus for manufacturing a flexible printed laminate, comprising: An apparatus for manufacturing a flexible printed laminate according to claim 2,
The temperature control unit may further include a downstream temperature for heating or cooling the intermediate product in a temperature control zone for maintaining the temperature of the intermediate product sent from the temperature control roll within the appropriate temperature range. Equipped with adjusting means,
The control means controls the operation of the downstream temperature adjustment means so that the intermediate product has a temperature within the appropriate temperature range,
An apparatus for manufacturing a flexible printed laminate, comprising: An apparatus for manufacturing a flexible printed laminate according to any one of claims 1 to 3,
The peeling means includes a peeling roll for peeling the protective film from at least one rust-proof layer,
An apparatus for manufacturing a flexible printed laminate, comprising: A method of manufacturing a flexible printed laminate,
A laminating step of laminating a copper foil on which at least one surface of a base material made of polyimide is placed while placing a copper foil provided with a rust-preventing layer on the surface of the copper foil layer,
Simultaneously with or before the laminating in the laminating step, a protective film is disposed on the surface of the at least one rustproof layer opposite to the copper foil layer, and heated to a predetermined temperature. A film sticking step of sticking the rust prevention layer and the protective film,
A temperature adjusting step of adjusting the temperature so that the intermediate product generated by the film attaching step maintains an appropriate time of 40 seconds to 80 seconds within an appropriate temperature range of 200 degrees to 230 degrees;
A peeling step of peeling the protective film from the rust preventive layer from the intermediate product whose temperature has been adjusted in the temperature adjusting step,
A method for producing a flexible printed laminate, comprising:

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