JPH0583368B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a laminator for pasting a film onto a substrate, and particularly to a pressure roller used when pasting the film onto a substrate.

[Prior art]

In the manufacturing process of printed wiring boards used in electronic devices such as computers, there is a step of attaching a laminate to the surface of the printed wiring board.
The laminate is formed of a photosensitive resin layer (resist layer) and a translucent resin film. The photosensitive resin layer is directly adhered to the surface of the printed wiring board. A translucent resin film is formed on the surface of the photosensitive resin layer to protect it.

The pasting of the laminate to the printed wiring board is described in Japanese Patent Application Laid-Open No. 1983-1997, which was previously filed by the applicant of the present application.
As described in Publication No. 117487, etc., this is carried out using a laminator. In this laminator, the process of attaching the laminate to the printed wiring board is as follows.

First, the board transport mechanism transports the leading end of the printed wiring board in the transport direction to a film attachment position and stops it.

Next, the main vacuum plate (film supply member) sucks the front end side of the continuous (elongated) laminate supplied from the film supply roller in the supply direction and the surface facing the transparent resin film. . A film temporary attachment member is provided at the tip of the main vacuum plate on the film attachment position side.
The most extreme side of the laminate in the supply direction is attracted to the film tacking member. As mentioned above, this film tacking member is provided with suction holes connected to the vacuum system that suctions the laminate, and also has a built-in heater for tacking the leading edge of the laminate. There is.

Next, the main vacuum plate and the film temporary attachment member are brought close to the film attachment position (the surface of the leading end of the printed wiring board in the conveying direction). Then, the most extreme side of the laminate in the feeding direction is brought into contact with the surface (film sticking surface) of the leading end of the printed wiring board in the transport direction, and tacking is performed by thermocompression bonding with a film tacking member.

Next, the suction operation of the main vacuum plate and the film temporary attachment member is stopped, and these are separated from the film attachment position. At this time, since the leading end of the laminate in the supply direction is temporarily attached to the surface of the printed wiring board in the above-mentioned temporary attaching operation, it does not shift from the film attaching position.

Next, a rotating thermo-compression roller is brought close to the film application position and the temporarily attached portion of the laminate is pressed, and in this state, the rotation of the thermo-compression roller is applied to the surface of the printed wiring board. The laminate is sequentially thermocompressed and laminated, and the printed wiring board is transported in the transport direction. The laminate is automatically supplied to the film attachment position by the rotation of the thermocompression roller and the conveyance of the printed wiring board.

Next, while the laminate is being laminated by thermocompression bonding on the surface of the printed wiring board, the rear end of the printed wiring board in the conveying direction is detected, and based on this detection signal, the continuous laminate is moved in the feeding direction. Cut the rear end side. That is, the length of the cut laminate is formed to a dimension corresponding to the length of the printed wiring board in the transport direction. To cut the laminate, hold the cutting position of the laminate (the rear end side in the feeding direction) by suction with the sub-vacuum plate placed in the laminate supply path, and move the cutting cutter along the laminate feeding direction. This is done by moving in cross directions. The cutting cutter consists of a disc-shaped cutter. The rear end side of the cut laminate is
It is sucked and held by a vacuum bar (a film rear end suction member), and is guided to the rear end of the printed wiring board in the feeding direction with an appropriate tension applied thereto. The rear end side of the laminate in the feeding direction is thermocompression laminated onto the rear end surface of the printed wiring board in the conveyance direction using a thermocompression roller.

In this way, the printed wiring board to which the laminate is pasted using the laminator is transported to the next stage of exposure equipment.

This type of film pasting technique, in which a part of the laminate is temporarily attached to the printed wiring board and then thermocompression bonded to the printed wiring board, is disclosed in, for example, West German Patent DE3334009C2, Japanese Patent Publication No. 1983- 49169
It is also stated in the publication number etc.

As shown in FIG. 5, a pressure roller 10 is used for pasting the film onto the surface of the printed wiring board (hereinafter simply referred to as the board).
0 means that the surface of the aluminum cylinder 101 is approximately 4
The center of the aluminum cylinder 101 is covered with a rubber 102 having a thickness of mm and has a hole through which a sheathed heater 103 for heating the pressure roller 100 is inserted.

Further, at both ends of the pressure roller 100, pipe-shaped iron roller shafts 104A and 104B, which serve as rotating shafts, are embedded in holes passing through the center of the cylinder 100. A slip ring is attached to the shaft 104B to supply power to the sheathed heater 103,
Power is supplied to the sheathed heater 103 through an electric wire 105. The sheathed heater 103 controls the surface temperature of the pressure roller by a temperature controller that controls the voltage applied to the sheathed heater 103 in response to a temperature sensor attached to the surface of the pressure roller and its signal. about
Controlled to maintain the temperature at 100℃.

As shown in FIG. 6 (an explanatory view of the film path relationship seen from the side of the laminator equipped with the pressure roller of FIG. 5), the film substrate 106
For pasting, use the upper and lower film rollers 107A.
The non-peeled side of the three-layered film supplied from 107B and 107B is brought into contact with each surface of the pressure roller at a wrapping angle of about 60°, and the peeled surfaces of the upper and lower films are faced to each other, and the upper and lower films are separated. The substrate 106 is passed between the pressure rollers 100A and 100B in the advancing direction, and the substrate 106 is fed while the peeling surfaces face each other, and the upper and lower pressure rollers 1
00A and 100B are pressed together, and the pressure roller 100
This is done by passing the substrate 106 between A and 100B.

That is, the upper and lower pressure rollers 100A and 100
B is attached with its surfaces approximately 10 mm apart. That is, the lower pressure roller 100B does not move because the bearings fitted into the roller shafts 104A and 104B are screwed to a fixed member. And the roller shaft 104
A gear for driving is screwed to A.

On the other hand, in the upper pressure roller 100A, bearings fitted into the roller shafts 104A and 104B are screwed to a movable member that can move up and down, and the movable member moves up and down by the force of a spring and air pressure. The pressure roller 100B is brought into contact with and separated from the pressure roller 100B.

Further, similarly to the lower pressure roller 100B, a driving gear is screwed to the roller shaft 104A.

Pressure contact between the upper and lower pressure rollers 100A and 100B is performed by a force applied to the roller shafts 104A and 104B via the bearing of the upper pressure roller.

The distance between the bearings fitted into roller shafts 104A and 104B is approximately 700 mm, and approximately 100 kgf is added to roller shafts 104A and 104B.
force is applied.

Further, FIG. 7 is a side view of a laminator using a non-heated roller made of a rigid cylindrical stainless steel pipe whose surface is coated with Teflon.

The unheated roller is made of a stainless steel rigid cylindrical pipe with Teflon coating on the surface of the pressure roller.The rigid cylindrical pipe itself serves as the rotation axis, and there is almost no deflection due to bending moment, and the pressure rollers 109A and 109B are flexible over the entire length of the pressure rollers 109A and 109B. This allows for pressure welding with almost uniform pressure. However, since the pressure roller is a non-heated roller, even if pressure can be applied with uniform pressure, the film cannot be stuck to the substrate surface sufficiently. Therefore, semicircular arc metal film preheaters 110A and 110B called heat shoes are provided in front of the pressure rollers 109A and 109B.

The film preheater (heat show) 110A
and 110B have a sheathed heater embedded therein.

The surface that the non-peeling side of the film touches and rubs at a wrap angle of 180° is Teflon coated and
The temperature is controlled by a sheathed heater embedded inside so that the surface temperature is around 110℃.

The method of attaching the film to the surface of the substrate 106 is the same as in the case of FIG. 6 described above.

That is, the upper and lower film preheaters (heat shows) 110A and 110B, which are wrapped around the non-peeling side of the film, are attached to both side plates with screws at a distance of about 10 mm, and there is a gap between the film preheaters (heat shows) 110A and 110B. , the substrate 106 is fed in, and the film is pasted by moving the substrate 106 while being pressed between upper and lower pressing rollers whose film peeling surfaces face each other.

[Problem to be solved by the invention]

Roller shafts 104A and 1 shown in FIG.
The distance between the bearing fitted into 04B is approx.
700mm, roller shaft 104A and 104
Since the pressure rollers 100A and 100B have the above-described configuration, a bending moment acts on the roller shafts 104A and 104B after the upper and lower pressure rollers 100A and 100B are pressed together by the force of approximately 100 kgf applied to the roller shafts 104A and 104B, causing the pressure bonding to occur. Roller 100A and 1
The pressure in the center of 00B becomes lower.

In other words, there was a problem in that it was difficult to press the pressure rollers 100A and 100B with uniform pressure over their respective entire lengths.

Furthermore, the stronger the force acting on the movable member in order to increase the pressure in order to increase the crimping width, the greater the difference between the pressure at the center of each of the crimping rollers 100A and 100B and the pressure near both left and right ends of the crimping rollers 100A and 100B. ,
It becomes increasingly difficult to expect pressure to be uniform.

In this way, if the film is attached to the substrate with uneven pressure from the pressure roller,
Poor adhesion between the substrate and the film occurs in areas where the pressure is low. Then, various problems arise, such as meandering of the substrate due to the change in pressure and the occurrence of wrinkles in the film.

Further, even if the pressure of the pressure roller is uniform, if the film is not pressed against the substrate using heat or elastic rubber, the unevenness of the substrate surface will cause partial pressure bonding failures.

The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a technique that allows a film to be attached to a substrate while the pressure of the pressure roller is uniform. be.

Another object of the present invention is to provide a technique that allows a film to be attached to a substrate while the temperature of the pressure surface of the pressure roller is uniform.

Another object of the present invention is to provide a technique that can prevent partial crimping defects from occurring due to irregularities on the substrate surface.

The above and other objects and novel features of the present invention will become clear from the description of this specification and the accompanying drawings.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a laminator in which a film supplied from a film supply device is pasted onto a substrate sent to a film pasting section by a conveying means such as a conveyor and conveyed by a heated pressure roller. The pressure roller is comprised of an electromagnetic induction heating roller, and the pressure roller surface is comprised of a rubber material having a thickness of 1.5 to 3 mm.

Further, when the application surface of the film is applied to the substrate, the film is sequentially applied to the substrate while the non-adhesion side of the film is preheated on the surface of a pressure roller.

Further, the heating control method of the pressure roller is a phase control heating method.

[Effect]

According to the above-mentioned method, by passing one roller shaft through a hollow roller shell assembled to two flanges, a pressure roller is applied to both ends of each roller shaft of a pair of upper and lower pressure rollers. It is possible to press the roller shell with uniform pressure over the entire length of the roller shell.

In other words, the bending moment due to the force applied to both ends of the roller shaft acts on the roller shaft and has almost no effect on the roller shell, so the film can be attached to the substrate while the pressure of the pressure roller is uniform. be able to.

Further, the surface of the pressure roller is made of a rubber material with a thickness of 1.5 to 3 mm, and when the surface of the film to be applied is applied to the substrate, the surface of the film to which it is not applied is preheated on the surface of the pressure roller, and the substrate is heated. By sequentially applying the film to the substrate, it is possible to apply the film to the substrate while the temperature of the pressure surface of the pressure roller is uniform, thereby preventing partial crimping failures due to unevenness of the substrate surface. can do.

Further, since the heating control method of the pressure roller is a phase control heating method, the temperature of the pressure surface of the pressure roller can be made uniform.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be specifically described using the drawings.

In addition, in all the figures for explaining the examples,
Components having the same function are given the same reference numerals, and repeated explanations thereof will be omitted.

FIG. 1 is a partially cutaway front view showing a schematic configuration of an electromagnetic induction heating roller (pressing roller for laminator) according to an embodiment of the present invention, and FIG.
- It is a sectional view taken along the A line.

As shown in FIGS. 1 and 2, the electromagnetic induction heating roller (hereinafter simply referred to as the pressure roller) of this embodiment can be roughly divided into a roller shell (cylindrical hollow roller) 50, a flange 60, and a roller shaft 70. It consists of three parts.

The roller shell (cylindrical hollow roller) 50
A predetermined hole 51 is made in the flesh of a cylindrical hollow pipe made of iron, a heating medium is sealed in the hole 51, and then sealed to form a sealed chamber (jacket chamber) 52.
The outer peripheral surface of the roller shell (cylindrical hollow pipe) 50 is covered with rubber 53 having a thickness of about 2 mm. In this way, roller shell (cylindrical hollow pipe) 5
By covering the outer circumferential surface of the roller 0 with a rubber 53 having a thickness of about 2 mm, the pressure roller can be made elastic.

As the rubber, synthetic rubber such as silicone rubber and fluoro rubber is used. The hardness of the rubber is preferably JIS A hardness of 60 to 70.

JIS A hardness is hardness measured with a JIS spring type hardness tester type A (see JIS K6301-1975).

Further, metal powder such as aluminum powder may be mixed into the rubber to increase the thermal conductivity of the rubber layer.

If the thickness of the film is too thin or too thick, the pressure of the pressure roller 21 will not be able to apply the film 1B uniformly.

The flange 60 is composed of a convex iron cylindrical pipe fastened to both ends of the roller shell 50 with bolts, and the outer diameter of the disk portion 61 attached to both ends of the roller shell 50 is slightly larger than the outer diameter of the roller shell 50. It is made small.
That is, it consists of a small-diameter cylindrical portion 62 connected to a disk portion 61 of the flange 60 . The inner diameter of the flange 60 is made with a fitting tolerance to the outer diameter of the bearing 63 fitted into the roller shaft 70.

The roller shaft 70 is made of a stainless steel round bar, and an iron core 71 is provided in a portion of the roller shaft 70 located in the hollow part of the roller shell 50 so as to cover the outer circumference of the roller shaft 70. A coil 72 is wound around 71. Then, the roller shaft 7
A part of the roller shaft 70 is hollowed out, and a coil wire for connecting the coil 72 to a power source is drawn out from the center of the roller shaft 70.

Next, the assembly of the three roughly divided parts will be explained.

Bearing 6 fitted into roller shaft 70
3 are respectively inserted into the inner diameter side of the flange 60 so that the roller shell 50 can rotate smoothly around the roller shaft 70 passing through the roller shell 50, and are inserted in the axial direction. It is fixed to the flange 60 with a fixing ring 64 to prevent movement.

A gear (not shown) for rotating the pressure roller is fitted into a small-diameter cylindrical portion 62 connected to the disk portion 61 of the flange 60 and fixed with a screw.

FIG. 3 is a side view of a laminator according to an embodiment of the present invention, and is an explanatory diagram showing the film path relationship seen from the side of the laminator.

As shown in FIG. 3, the laminator of this embodiment has a laminate film 1 having a three-layer structure of a translucent resin film, a photosensitive resin layer, and a translucent resin film, which is continuously wound around a supply roller 2. It's spinning. The laminate film 1 of the supply roller 2 is separated by a film separating member 3 into a laminate film (hereinafter referred to as "laminated film") consisting of a transparent resin film (protective film) 1A, a photosensitive resin layer with one side (adhesive surface) exposed, and a transparent resin film. , simply referred to as a film).

One of the separated translucent resin films 1A is configured to be wound up by a winding roller 4. The supply roller 2 and the take-up roller 4 are respectively provided above and below the substrate conveyance path II.

The leading end of the other separated film 1B in the feeding direction is fed to a main vacuum plate (film feeding member) 6 via a tension roller 5, as shown in FIG. 6D is the tip member of the main vacuum plate 6.
A static electricity removing device 18 for the film 1B is provided near the main vacuum plate 6.

As shown in FIG. 3, the main vacuum plate 6 is configured to approach and move away from the film application position (move in the vertical direction).
That is, the main vacuum plate 6 is slidably attached to a guide rail 7 attached to the main vacuum plate support plate (film supply member support plate) 8. The main vacuum plate support plate 8 is provided so as to be vertically movable via a rack gear (not shown) and a pinion gear 10 on a mounting frame attached to the apparatus main body (the casing of the film sticking apparatus).

The pinion gear 10 meshes with a rack gear 9 provided on a support plate connecting rod 32 for upper and lower main vacuum plates that is connected to a drive motor 11.

Further, on the main vacuum plate support plate 8, a film holding member 12 for winding the tip end is provided so as to be slidable on the front and rear guide rails. The tip winding film holding member 12 is provided with a connecting notch member, and a connecting rod 13 is fitted into this connecting notch member. This connecting rod 13 is attached to a fixed blade support member 14. Further, a fixed blade 15 is supported by the fixed blade support member 14 .

Further, a rotary blade 17 is rotatably provided on the rotary blade support member 16. The rotary blade 17 has a cutting edge provided obliquely at a predetermined inclination angle.

Moreover, air blowing pipes 19 and 20 for blowing air toward the film 1B are provided on the upper and lower sides of the rotary blade support member 16, respectively.

In FIG. 3, 21 is a pressure roller, 22
23A is a driving roller, 23B is a driven roller, 24 is a board holding member, and 25 is a vacuum bar. The substrate holding member 24 includes a substrate holding roller and an air cylinder for the substrate holding roller that moves the substrate holding roller up and down.

26 is a wet roller, 27 is a lamination roller (pressure roller) wiping roller, 28 is an air cylinder for the lamination roller (pressure roller) wiping roller, 29 is a substrate wiping roller interlocking holding member, 3
0 is a substrate wiping roller, 31 is an air cylinder for the substrate wiping roller, and 33 is a connecting rod attachment member.

The film 1B is applied to the substrate 22 by passing the film 1B between the upper and lower pressure rollers 21 in the direction of movement of the substrate 22, and feeding the substrate 22 while the application surfaces (separation surfaces) of the film are facing each other. This is performed by pressing the rollers 21 and passing the substrate 22 between the pressure rollers 21 .

That is, the upper and lower pressure rollers 21 are installed with their surfaces separated by about 15 mm.

Pressure roller shafts 70 are attached to the upper and lower sides of the pressure roller mounting members, which are movable back and forth parallel to the substrate conveyance direction and vertically movable perpendicular to the substrate conveyance direction.

That is, both end portions of the roller shaft 70 are attached to the pressure roller attachment member 40 with screws via roller shaft tightening members. Further, a gear is attached to the pressure roller attachment member 40, which meshes with a gear attached to the flange 60 and is rotated by a drive motor.

There are two sets of pressure roller mounting members 40 on the left and right sides separated by about 950 mm, and an air supply for pressing the upper and lower pressure rollers 21 is provided at the opposite end of the pressure roller mounting members 40 from the side on which the pressure roller 21 is attached. Cylinder 41 is screwed.

The air cylinder 41 causes the upper and lower pressing roller mounting members 40 to apply a force of about 440 Kgf to the roller shaft 70 of each pressing roller 21.
The force of approximately 440 kgf acting on the roller shaft 70 brings the upper and lower pressure rollers 21 into pressure contact.

On the top and bottom surfaces of the board 22 transported by the conveyor,
The tip of the film peeling surface is pasted (temporary attachment) with the entire film width at a predetermined position on the tip in the transport direction.
It will be done.

The upper and lower pressing rollers 21 approach the tip of the substrate 22 and press the tip of the temporarily attached film onto the upper and lower surfaces of the substrate 22 from above the film 1B.

The upper and lower pressure rollers 21 press the upper and lower surfaces of the substrate 22 at positions where the non-stick surface (non-peeling surface) of the film 1B contacts the surface of the pressure roller 21 at a wrapping angle of at least 90°. .

The upper and lower pressure rollers 21 are controlled by a temperature sensor (not shown) that is in contact with the surface thereof, and a temperature controller that receives the signal and controls the voltage supplied to the coil 72 using a phase control method. The surface temperature is maintained at 100℃.

Then, the pressure roller 21 moves the substrate 22 while heating the non-sticking surface (non-peeling surface) of the film 1B just before being pasted on the substrate 22 with the roller surface and sticking the sticking surface (peeling surface) of the film on the substrate 22. do.

The surface temperature of the pressure roller 21 plays an important role in bringing the film 1B into close contact with the surface of the substrate 22.

Depending on the film 1B used, if the surface temperature of the pressure roller 21 is lower than a predetermined temperature,
Poor adhesion occurs between the substrate 22 and the film 1B, and if the adhesion is high, air bubbles will be generated in the attached film 1B. That is, surface temperature management of the pressure roller 21 is important.

Generally, when using an electric heater as the heat source for the pressure roller, the phase control method is used to control the temperature.
Excellent PID control. In addition, if the pressure roller has a structure in which the jacket chamber 52 is sealed with a heating medium sealed therein, the temperature on the surface of the roller can be controlled by either an on/off control method in which the heater is simply turned on and off, or a phase control method. There is no change in controllability.

However, as in the present invention, the pressure roller 2 is composed of an electromagnetic induction heating roller having a jacket chamber 52.
In case 1, it is electrically equivalent to a leaky transformer, so when a voltage is applied to the coil 62 serving as a heat source, an inrush current of more than ten times the rated current flows, similar to a transformer.

As a result of experiments, the percentage of inrush currents exceeding the rated current value flowing is approximately 45%, and the percentage of inrush currents exceeding 5 times the rated current flowing being approximately 20%.

When temperature control of the electromagnetic induction heating roller is performed using on-off control type proportional control action, integral control action, or deliverable control action (PID) control, the inrush current flowing through the coil can be ignored. It disappears. Therefore, the phase control method is very effective for the purpose of eliminating the adverse effects of rush current on control elements and the generation of vibration noise.
FIG. 4 shows the uniformity of the surface temperature of the pressure roller 21, which is an electromagnetic induction heating roller, at this time.

As can be seen from the above description, according to this embodiment, one roller shaft 70 is moved inside the hollow roller shell 50 to which two flanges 60 are assembled.
By penetrating the roller shell 50, the force applied to both ends of each roller shaft 70 of the pair of upper and lower pressure rollers 21 can press the roller shell 50 with uniform pressure over the entire length.

In other words, the bending moment due to the force applied to both ends of the roller shaft 70
0 and hardly acts on the roller shell 50, so that the film 1B can be attached to the substrate 22 while the pressure of the pressure roller 21 is uniform.

Also, the surface of the pressure roller 21 has a thickness of 1.5 to 3 mm.
The film 1 is made of a rubber material of
When pasting the pasting surface of the film 1B onto the substrate 22, the non-sticking surface of the film 1B is preheated with the surface of the pressure roller 21, and the film 1B is successively pasted onto the substrate 22.
By pasting the film 1 onto the substrate 22, the temperature of the pressure surface of the pressure roller 21 is uniform.
B can be pasted, so the board 22
It is possible to prevent partial crimping defects from occurring due to surface irregularities.

Further, the heating control method of the pressure roller 21 is as follows:
Since it is a phase control heating method, the temperature of the pressure surface of the pressure roller 21 can be made uniform.

Although the present invention has been described above based on examples,
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As described above, according to the present invention, a film can be attached to a substrate while the pressure of the pressure roller is uniform.

Furthermore, the temperature of the pressure surface of the pressure roller can be made uniform.

Furthermore, it is possible to prevent partial crimping defects from occurring due to unevenness on the surface of the substrate.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a schematic configuration of an electromagnetic induction heating roller (pressing roller for laminator) according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1. 3 is a side view of a laminator using the pressure roller according to the present invention, and FIG.
Characteristic diagrams showing the uniformity of the surface temperature of a pressure roller made of an electromagnetic induction heating roller, FIGS. 5 to 7, are as follows.
It is an explanatory view for explaining the problem of the conventional laminator. In the figure, 1B... laminate film, 6... main vacuum plate, 21... pressure roller (electromagnetic induction heating roller), 22... printed wiring board substrate, 23A... drive roller, 23B... driven roller, 24... substrate holding member, 25... vacuum bar, 26... wet roller, 27... pressure roller wiping roller, 28... air cylinder for pressure roller wiping roller, 29... substrate wiping roller interlocking holding Member, 30...Substrate wiping roller, 31...
... Air cylinder for substrate wiping roller, 33 ... Connection rod attachment member, 50 ... Roller shell (cylindrical hollow roller), 60 ... Flange, 70 ... Roller shaft.

Claims (1)

[Scope of Claims] 1. In a laminator in which a film supplied from a film supply device is pasted onto a substrate sent to a film pasting section by a conveying means such as a conveyor and conveyed by a heated pressure roller, the pressure roller is composed of an electromagnetic induction heating roller, and the pressure roller surface has a thickness of 1.5 to 3 mm.
A laminator characterized by being made of rubber material. 2. The laminator according to claim 1,
When attaching the adhesive side of the film to the substrate,
A laminator characterized in that the films are successively applied to a substrate while the non-applied side of the film is preheated on the surface of a pressure roller. 3. The laminator according to claim 1 or 2, wherein the heating control method for the pressure roller is a phase control method.