JPS61193854A - Laminator using rotary shoe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a method for continuously forming a photosensitive resin laminated film (commonly known as a dry film) into a frame shape so as to have uniform adhesion to the substrate without entrapping air. Crimp.

This invention relates to an automatic laminator for laminating layers.

[Prior art]

In recent years, the printing density of printed wiring boards has been increasing year by year, and resist image forming technology that exhibits high resolution has become important. In addition to the characteristics of the dry film, the resist image forming technology that maintains a high level of reliability and high resolution has extremely important meaning during the printed wiring board manufacturing process, especially from the lamination to the development process. This is the contact point between the resist and the resist, and requires various conditions and management. That is, conditions include substrate roughness, substrate temperature, lamination temperature, lamination pressure, lamination speed, etc.

On the other hand, as densification increases, garbage is removed during lamination in order to increase manufacturing reliability and yield.

How to prevent contamination of resist chips and cutting powder has become an important issue at the industrial production stage.

Various picture frame cutting type laminators have been proposed to solve the above problems. For example, U.S. Pat.
No. 6, JP-A-56-49592, JP-A-59-110
No. 188, etc., but the frame cutting method laminates the dry film to the substrate after cutting, so there are fewer resist chips, and it is possible to laminate only the required length to the substrate, so the dry film can be used effectively and is economical. This is a laminating method.

The method described in the above-mentioned U.S. Pat. No. 3,658,629 is held in a vacuum pail, tacked, and then laminated. When doing so, air entrapment and peeling from the tacking part occur, and the conditions are set in an extremely narrow range, and the dry film is not restrained and sways after being tacky to the board. However, the carrier film is thin and is difficult to use for dry films with no stiffness.
In the method disclosed in the above publication, the lengthwise position of the photosensitive resin film is determined and laminated by sliding it on a slide-like guide. Moisture management of the dry film carrier film seems difficult and also because the friction coefficient on the slide is affected by temperature and humidity.

It is necessary to strictly control the temperature and humidity of the laminate atmosphere. The method disclosed in JP-A-59-110188 laminates both sides with a single sheet of dry film, and compared to the method of laminating in the shape of a picture frame, the loss of dry film is large and the time required to pull out the dry film is long. Therefore, the lamination cycle time needs to be longer than that for double-sided lamination, which poses a problem in productivity.

[Problem that the invention seeks to solve]

The present invention solves the problems and difficulties of the prior art described above, and aims to provide a laminator that press-bonds a dry film into a picture frame shape and can be applied to a dry film using a thin and stiff carrier film. It is something.

[Means for solving problems]

The present invention provides a laminating device that presses a continuously wound photosensitive resin laminated film onto a sequentially conveyed substrate having a predetermined size. A shoe having a cutting groove formed in the width direction of the arcuate surface and a heating section adjacent to the cutting groove for pre-pressing the end of the photosensitive resin laminated film near the tip of the substrate is conveyed. A main crimping hot roll is mounted so as to be rotatable toward or away from the coming substrate, and reciprocating in a vertical direction toward the substrate, and a main crimping hot roll is mounted in close proximity to the substrate conveying direction side of the shoe. A detection device for detecting the front and rear ends of the substrate is provided in the transport path of the substrate, and when the rear end of the substrate is detected, the transport of the substrate is stopped, and a predetermined detection device according to the length of the substrate is disposed. This is a lamination device using a rotating shoe, which operates a cutting device that cuts a photosensitive resin laminated film into lengths.

[For production]

If there is a cover film, it is removed, and a photosensitive resin laminated film (hereinafter referred to as dry film) consisting of two layers, a carrier film and a photosensitive layer, is held and restrained around the outer periphery of the sheet without wrinkles and pre-pressed. rotating the shoe to a position, and pre-pressing the dry film held and moved by the shoe to the tip of the substrate being conveyed;
After the preliminary crimping, the tip of the transferred substrate is caught by a pair of main crimping hot rolls, and when the main crimping starts, the shoe is reversed and returned to the dry film cutting position, and as the substrate is transferred, the shoe is moved back to the dry film cutting position. The dry film is cut to a predetermined length by a detection sensor that detects the edge, and the cut end is held by a shoe while the dry film is being cut.
While holding the next dry film on the outer surface of the shoe,
The shoe is rotated at the same speed as the transfer speed of the substrate to the pre-pressing position described above and stopped at the pre-pressing position, and as the substrate is transferred, the cut dry film is moved away from the shoe and crimped onto the substrate. This method waits until the next substrate is transported, then the substrate is transported, stopped at a predetermined position, and pre-pressed, and the above-described operations are repeated, making it possible to perform simple and stable lamination.

〔Example〕

The present invention will be explained based on embodiments shown in the drawings.

A and A are a pair of shoes of the same shape and size, each having an arcuate outer circumferential surface and a substantially fan-shaped cross section that is rotatably supported by a central fulcrum 1°1.

Dry film end adsorption parts 3, 3 (hereinafter sometimes referred to as outer peripheral layer extension adsorption parts) are formed by extending and cutting the tips of the outer peripheral layers 2, 2 on the rotation direction side of A, and the outer peripheral layer extension adsorption parts 3 ．．
Cutting grooves 4, 4 in the inner direction along the outer peripheral layers 2, 2 from 3.
In addition, heating parts 5, 5 are provided adjacent to the cutting grooves 4, 4 inwardly along the outer circumferential layer 2.2 for pre-pressing the dry film to the tip of the substrate, and furthermore, the above-mentioned arc-shaped The outer circumferential layer 2.2 and the outer circumferential layer extension suction parts 3, 3 have small holes for vacuuming 6.6 for restraining and holding dry film.・
...... to be drilled in large numbers.

The shoes A and A mentioned above are preferably metal shoes made of aluminum or the like, which are hard to rust, but they can also be made of thermosetting plastic, and the heating parts 5, 5 provided inside the shoes can be heated to a temperature of up to 150°C. Fluorine rubber, synthetic rubber, or other conductive rubber that can be heated up to Although it is possible, it is usually good to set it to about 0.1 to 3Wφ, and it is preferable that the outer peripheral surfaces of shoes A and A are roughened to the extent that the carrier film of the dry film will not be scratched. .

7.7 indicates that when the shoes A, A are rotated to the preliminary crimping position described later and stopped, a pair of main crimping hotspots provided close to the outer circumferential layer extension adsorption portions 3, 3 of the shoes A, A 8.8 is a pair of upper and lower scissors when the shoes A and A are reversed after the preliminary crimping and return to the position before operation.

A is a cutting device consisting of a rotary blade, a laser blade, etc., which is installed at a position corresponding to each of the cutting grooves 4, 4, and 9 is a cutting device that is provided in the conveyance path of the substrate 10, and is used to cut the leading end 10a and the rear end of the substrate 10. This is a detection device for detecting 10b, and the detection device can use an optical sensor, a sonic sensor, a limit switch, or the like.

11.11 is a roll on which a photosensitive resin laminated film is wound, arranged vertically, 12.12 is a cover film winding core arranged above and below, 13°, 13 is a cover film peeling roller, 14, 15° 16 is a roller for conveying the substrate 10.

Next, the operation of the laminator of the present invention will be explained.
FIG. 3, which shows the order of operation, shows a pair of shoes A arranged above and below, and a schematic diagram for explaining the shoe A arranged above A.
The lower part 21, etc., which is provided symmetrically with the others, is omitted. Since the operation is the same for both the upper and lower parts, only the upper part will be explained.

If there is a resin laminated film with a cover film, the cover film is peeled off by the cover film peeling roller 13, the peeled cover film is wound up by the cover film winding roller 12, and the carrier film sheet from which the cover film has been removed is taken up. The dry film X, which consists of two photosensitive layers, has a large number of small vacuum holes 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 10, 10, 10, 3, 3, 3, , , , , , , , , , , , , , , , , a , a dry .・
... is adsorbed to the outer circumferential surface of the shoe A (see FIG. 3A). When the substrate 10 is carried in, the detection device 9 detects the tip 10a of the substrate 10, and this detection activates a timer to stop the substrate 10 at a preliminary crimping position, which will be described later. With the dry film X adsorbed to the outer peripheral surface, the operator waits until the rotating board 10 is quickly conveyed around the fulcrum 1 of the shoe A. When the tip 10a of the substrate 10 reaches a position facing the heating section 5 of the shoe A, the movement of the substrate 10 is stopped, and the shoe A is moved vertically toward the substrate 10 by operating a mechanism such as an air cylinder. Then, the dry film X is preliminarily pressed onto a predetermined position on the substrate 100 by the heating section 5 (see the opening in FIG. 3). When the preliminary pressure bonding is completed, the suction of the shoe A is stopped, and the shoe A is moved vertically in the opposite direction to that described above, that is, in the direction away from the substrate 10, by the air cylinder mechanism as described above (see FIG. 3). On the other hand, after the preliminary pressure bonding is completed, the substrate 10 starts to move in the direction of the main pressure bonding hot roll 7.7 with the dry film preliminarily bonded to a predetermined position at the leading end. The above-mentioned main crimping hot roll T.

Since T is provided close to the position where the shoe A is in the preliminary crimping position, the transfer of the board 10 to the main crimping hot roll 7.7 is extremely smooth, and the board 10 is in the main crimping position. The main pressure bonding of the dry film X is started by the hot roll 7.7 (see the opening in FIG. 3).

When this main crimping is started, the shoe A is quickly reversed with the fulcrum 1 as the center and along the dry film It is rotated in the above-mentioned direction up to that point (see the opening in Figure 3). As the substrate 1o moves further and the main pressure bonding progresses, when the rear end 1ob of the substrate 1o is detected by the detection device 9, the conveyance of the substrate 1o is stopped, and at this time suction to the shoe A is started. Further, the rear end 10 of the substrate 1o described above
When b is detected, the cutting device 8 is activated, and the dry film X is cut at the cutting groove 4 of the shoe A to a predetermined dimension corresponding to the length of the substrate 1o (see FIG. 3).

In this way, even if the dry film X is cut, there is no danger of it hanging down because the end of the dry film X is attracted to the outer peripheral layer extension adsorption section 3 of the shoe A. Then, when the dry film The substrate 10 is rotated at the same speed as the movement of the substrate 10 while being attracted to the circular arc-shaped outer circumferential surface of the substrate.

The cut dry film end portion adsorbed by the outer circumferential layer extension adsorption portion 3 of the shoe A described above leaves the shoe A and is sent together with the substrate 10 to the main pressure bonding hot roll 7.7. is provided close to the position where the shoe A is at a predetermined position for preliminary crimping, that is, the rotation of the shoe is stopped, so that the end of the dry film X is an extension of the outer peripheral layer of the shoe A. Immediately after leaving the suction unit 3, the substrate 10 is pressed by the main pressure bonding hot roll 7.7.
Since the dry film X and the substrate 10 are crimped together, there is no air trapped between the dry film X and the substrate 10, and the crimping can be achieved very well.

When the substrate 10 is conveyed and moved while the end of the dry film X is separated from the shoe A and is crimped onto the substrate 10 by the main crimping hot roll 7.7, the shoe A is stopped at the preliminary crimping position and the next step is carried out. Wait until the substrate 10 is conveyed, then the next substrate 10 is conveyed, and when the tip of the substrate reaches the preliminary crimping position, the substrate is stopped (see Fig. 1).
Preliminary crimping is performed by the vertical movement of the press, and the above-described operations are repeated. By laminating the dry film inside the substrate in this way, it is possible to laminate it into a picture frame shape as shown in FIG. 5.

As the embodiment of the present invention is as described above, the dry film X is suctioned and restrained and held by the arcuate outer peripheral surface of the shoe A by vacuuming, etc., and the dry film X is held without wrinkles or sagging. Therefore, a large number of small holes 6, 6 for vacuuming are also provided at the bottom of the board 4 to avoid trapping of air etc. when laminating the board.
・・・・・・ is open, so it can suck the chips, and when the dry film is cut,
Since the cut end is adsorbed by the outer circumferential layer extension adsorption part 3 of shoe A, there is no fear of it hanging down.
The transfer to the main crimping pot roll 7°T from a further distance can be carried out extremely smoothly since the outer circumferential layer extension suction portion 3 described above is formed on the shoe A, so that the cut end can be held until the end. It is possible.

In order to preliminarily bond the dry film to the substrate, the shoe A is moved in the vertical direction by the air cylinder mechanism in the above embodiment, but in the embodiment shown in FIG.
It is also possible to provide a slidable part of the shoe on a part of the shoe and move only the slidable heating parts 5', 5' in the vertical direction by an air cylinder mechanism to perform preliminary crimping.

〔Effect of the invention〕

A laminating device using a rotating shoe according to the present invention includes:
The rotating end of the arc-shaped outer circumferential layer is extended to serve as a cut dry film end adsorption section, and the cutting groove and the dry film are preliminarily bonded to the substrate from the extended adsorption section inward along the outer circumference layer. The dry film has a heating part for heating, and the arc-shaped outer peripheral layer and outer peripheral layer extension suction part rotatably support a shoe having a large number of small holes for vacuuming. It is adsorbed, restrained and held on the outer circumferential surface of the shoe without wrinkles or sagging, and even when the dry film is cut to a required length, the cut end is adsorbed by the outer circumferential layer extension adsorption part of the shoe. Therefore, there is no risk of it hanging down from the shoe, and the cut end of the dry film is held by this outer layer extension suction part until the end.
Since it is press-fitted together with the board into the crimping hot roll, there is no air entrapment, etc. Stopping the board, reversing the rotation of the shoe, cutting the dry film, etc. are automatic by detecting the leading and trailing ends of the board. It can be laminated with extremely simple operations, and as a carrier film, thin polyester film of 9 to 15 μm, polystyrene film, polymethyl methacrylate film, and weak 10 to 30 μm thickness can be used.
It is now possible to laminate thick dry films such as polyvinyl alcohol films and polyethylene films into picture frames.

The present invention makes it possible to provide an apparatus that can uniformly and stably laminate dry films into a picture frame shape without entrapping air or shifting during preliminary pressure bonding.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is an explanatory diagram showing the state immediately before lamination to the substrate, and Fig. 2 is an explanatory diagram showing the state immediately before lamination to the substrate, and Fig. 2 shows the state after preliminary crimping, the substrate is moved to the main crimping hot roll, and the shoe is reversed. Explanatory diagram showing the state returned to the cutting position, Figure 3 (a)
, (B), (C), (2), (E), (F), (G) are schematic explanatory diagrams of the operating order with the lower shoe omitted, and Figure 5 (B) is a plan view of the board. FIG. X Nidry Film A, A: Shoe 2.2: Outer peripheral layer 3.3: Outer peripheral layer extension suction section 4.4: Cutting groove 5.5.5', 5': Heating section 6.6. ......: Vacuuming hole 7.7 Two crimping hot rollers 8.8: Cutting device 9: Detection device 10: Substrate

Claims (1)

[Claims] In a laminating device for pressure-bonding a photosensitive resin laminated film to a substrate, a large number of small holes are bored on the outer periphery of an arc, cutting grooves are formed in the width direction of the arc-shaped surface, and cutting grooves are provided adjacent to the cutting grooves. A shoe equipped with a heating section for pre-pressing the end of the photosensitive resin laminated film near the tip of the substrate is rotatable in the direction toward or away from the substrate being conveyed, and perpendicular to the substrate. A main crimping hot roll is provided in the vicinity of the substrate conveying direction side of the shoe, and a detection device for detecting the leading and trailing ends of the substrate is disposed in the conveying path of the substrate. , a rotary shoe characterized in that upon detection of the rear end of the substrate, the conveyance of the substrate is stopped and a cutting device is operated to cut the photosensitive resin laminated film to a predetermined length according to the length of the substrate. Laminating device used.