JP2750321B2 - Connection method when replacing laminator film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting a laminator film for laminating a photosensitive dry film (film) on an upper surface and a lower surface of a printed wiring board.

[0002]

2. Description of the Related Art A laminator is usually used for printing wiring by setting a film roll for a laminator by winding a photosensitive dry film covered on one side with a protective film into a roll shape and rewinding each. A photosensitive dry film is supplied to the upper and lower surfaces of the substrate and pressed.

[0003] For example, Japanese Patent Application Laid-Open No. 3-205134,
As disclosed in JP-A-4-27545, a film rewound from a laminator film roll is
The protective film is peeled by the film separating member, and the photosensitive dry film is supplied to the laminator body while the peeled protective film is wound by a winding roller.

Since the winding length of the laminator film roll is limited, when the film is completely rewound, it is replaced with the next laminator film roll.
New film needs to be supplied. Also, when the amount of remaining film is extremely low, or when it is necessary to change the type and brand of the film to be supplied to the laminator body according to the application, replace the laminator film roll and replace the new film. Need to supply.

Conventionally, when it is time to replace the preceding laminator film roll, the laminator is stopped, the preceding laminator film roll is removed, and the leading end of the film pulled out from the new laminator film roll is replaced. It was necessary to manually set the film separation member and the tension roller through the respective rollers in the film supply path to the position of the thermocompression bonding roller.

[0006]

For this reason, conventionally, it takes 10 minutes to replace the upper and lower laminator film rolls after the rewinding is completed in 2 hours, for example, and the ratio of the so-called setup time to the actual operation time is required. However, there is a problem that not only the operating rate of the laminator is reduced but also the efficiency of the entire line is reduced.

On the other hand, there is a film roll unit for a laminator in which film exchange is performed in a short time as disclosed in Japanese Utility Model Application Laid-Open No. 3-15131, which comprises a film roll and a protective film. The winding roll and the guide roll are unitized and replaced at the same time, and the step of manually setting the leading end of a new film cannot be omitted. Also, it cannot be applied when the weight of the film roll is large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. Even when the weight of a film roll for a laminator is large, the laminator can be quickly and reliably replaced.
In particular, it is an object of the present invention to provide a method of connecting a laminator film at the time of replacement, which can improve efficiency by omitting a setting step of a new film tip.

[0009]

The present invention rewinds a laminator film from a laminator film roll obtained by winding a laminator film made of a photosensitive dry film covered on one side with a protective film into a roll. While peeling the protective film by a film separating member, winding the peeled protective film by a take-up roller, and supplying the photosensitive dry film to a laminator main body, the preceding laminator film roll is replaced with a new one. When replacing the film roll for laminator, one end of the film withdrawal end of the film roll for the subsequent laminator to be exchanged and supplied with the film rear end of the preceding laminator film roll, the photosensitive dry film of the On one side and one side of the protective film in contact with it, Form an adhesive layer and a release layer covering the same, open the photosensitive dry film and the protective film at the end, peel off the release layer, and then open the other end of the open state. Inserted between a photosensitive dry film and a protective film, and the adhesive layer connects the preceding photosensitive dry film and the subsequent photosensitive dry film, and connects the preceding protective film and the subsequent protective film, respectively. The above object is achieved by the connection method for replacing a laminator film described above.

Further, the invention of claim 2 is that the release layer is a single release layer interposed between the adhesive layer on the photosensitive dry film side and the adhesive layer on the protective film side. ,
The above object is achieved.

Further, the invention according to claim 3 is that the release layer protrudes from the longitudinal edge of the one end, which is previously sandwiched between the adhesive layers, and at least reaches the vicinity of both ends in the width direction. The above object is achieved by extracting the release sheet, connecting the films for the preceding and following laminators.

Further, the invention of claim 4 achieves the above object by making the release sheet protrude from both ends in the width direction of the one end.

According to a fifth aspect of the present invention, the above object is achieved by arranging the release layer to have a size protruding from the adhesive layer and projecting from a longitudinal end of the laminator film. It is.

According to a sixth aspect of the present invention, one edge of the adhesive layer of the photosensitive dry film and the protective film is arranged so as to coincide with one of the edge of the drawn-out edge or the edge of the rear edge. Thereby, the above object is achieved.

Further, the invention according to claim 7 is characterized in that the adhesive layer of the photosensitive dry film and the protective film and the release layer covering the adhesive layer are formed at the leading end of the film for the subsequent laminator. The purpose is achieved.

The invention of claim 8 achieves the above object by arranging the adhesive layer of the photosensitive dry film and the protective film intermittently in the width direction of the laminator film end. is there.

The invention of claim 9 achieves the above object by arranging the adhesive layers of the photosensitive dry film and the protective film continuously in the width direction of the laminator film end. is there.

Further, according to the present invention, the protective film is wound on the winding roller, and the protective film is cut on the winding roller to remove the winding roller. Is to achieve.

Further, the invention of claim 11 is characterized in that after removing the winding roller, the film for the preceding laminator is cut near the winding roller set position to form a rear end portion. The above object is achieved.

According to a twelfth aspect of the present invention, the rear end of the film of the preceding laminator film roll is held by the holding means in the vicinity of the preceding laminator film roll. The above object is achieved by connecting to the film drawing end of the following laminator film roll after replacing it with a laminator film roll.

[0021]

According to the first aspect of the present invention, the photosensitive dry film and the protective film at one end of the film rear end of the preceding laminator film roll and one end of the film withdrawal end of the following laminator film roll. An adhesive layer and a release layer covering the adhesive layer are provided on the contact surface in advance, and at the time of replacement, the release layer is opened and the release layer is peeled off, and the other end is adhered to the adhesive layer by the adhesive layer, thereby leading and trailing. The photosensitive dry film, and the preceding and succeeding protective films are separately connected, and following the preceding film, the protective film is peeled off by the film separating member, and taken up by the take-up roller. The conductive dry film can be supplied to the laminator body through a predetermined supply path. There is no need to manually set the following film in the supply path.

According to the second aspect of the present invention, since there is only one release layer, an adhesive layer is provided on both sides of the release layer in advance, and this is sandwiched between the photosensitive dry film and the protective film. In addition, an adhesive layer can be attached to these film sides, which facilitates mounting work in advance and peeling work of the release layer.

According to the third aspect of the present invention, since the release sheet is inserted between the adhesive layers at the one end,
Using this as a guide, the other end can be inserted and joined. The film is very easy to wrinkle and difficult to handle, but by using a release sheet, it is stretched and connected along the release sheet, so that the film can be connected easily and accurately.

According to the fourth aspect of the present invention, since the release sheet protrudes from both edges in the width direction of the opened film end, the film is very easily opened.

According to the fifth aspect of the present invention, the release layer is easily peeled off, and the work for opening the photosensitive dry film and the protective film is also facilitated.

According to the sixth aspect of the present invention, since one end of the adhesive layer is disposed so as to coincide with the edges of the photosensitive dry film and the protective film which are opened, these edges of the film are arranged at the edges of the adhesive layer. , So that these films are easy to open.

According to the seventh aspect of the present invention, since the adhesive layer and the release layer are provided at the leading end of the subsequent laminator film, the adhesive layer and the release layer are previously attached outside the line, and In this part, the space between the photosensitive dry film and the protective film at the end of the drawer can be easily opened.

According to the invention of claim 8, since the adhesive layer is provided intermittently in the width direction of the end of the laminator film, the work of attaching the adhesive layer is easy and
The once peeled protective film is not biased and adheres to the photosensitive dry film.

According to the ninth aspect of the present invention, since the adhesive layer is formed continuously in the film width direction, it is possible to reliably connect the preceding and succeeding films.

According to the tenth aspect of the present invention, since the protective film is cut on the winding roller, the cutting operation is easy.

According to the eleventh aspect of the present invention, after the take-up roller is removed, the leading laminator film is cut in the vicinity of the take-off position, so that the cutting operation is easy.

According to the twelfth aspect, the rear end of the cut film is held in the vicinity of the laminator film roll, so that the connection operation is easy.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

First, a laminator 1 as shown in FIG.
0, the process of rewinding the film from the laminator film roll 14 attached to the film supply roller 12 and supplying the film to the laminator body 10 will be described.

Here, since the laminator 10 has the members arranged vertically symmetrically, only the upper roller system will be described, and the description of the lower roller system will be omitted.

The film 16 to be rewound from the laminator film roll 14 attached to the film supply roller 12 is a protective film made of a light-transmitting resin film on a photosensitive dry film 16A, as shown in FIG. 16B, and the guide rollers 18
After that, at a position between the guide roller 18 and the next tension roller 20, a substantially triangular film separating member 2 is formed.
2, the protective film 16B is peeled off from the photosensitive dry film 16A.

The peeled protective film 16B passes through the guide roller 24, passes outside the film supply roller 12, and is taken up by the take-up roller 26. The outer peripheral speed of the winding roller 26 depends on the film supply roller 1.
2 is set to match the unwinding outer peripheral speed of the laminator film roll mounted on 2.

The photosensitive dry film 16A, from which the protective film 16B has been peeled off, is bent downward at a right angle by the tension roller 20, and the leading end of the photosensitive dry film 16A is attracted to the main vacuum plate 28.
Is pulled out onto the feed line of the printed wiring board 30 while being sucked, and the rear end thereof is cut by the rotary cutter 32.
4A and the roller 34B for vertical movement overlap the printed wiring board 30 sent rightward in the figure from above, and are pressed by the thermocompression roller 36 onto the upper face of the printed wiring board 30. In this way,
It is sequentially unwound by the main vacuum plate 28, cut into a predetermined length, and thermocompression-bonded to the printed wiring board 30.

When the film 16 is unwound from one laminator film roll 14 and the remaining amount of the film is less than a predetermined value, the laminator 10 is stopped. The peeled protective film 16B, which is fed along the outside of the laminator film roll 14 and wound up by the winding roller 26, is cut on the winding roller 26, and the winding roller 26 is removed. You. The other end of the cut protective film 16B hangs from the guide roller 24 to the lower left in the drawing.

Next, the film 16 is pulled out from the vicinity of the removed position to the upper left of the drawing, and cut at the drawn-out portion in the film width direction. The preceding film 1 cut and formed
The rear end 39 of both the upper roller system and the lower roller system is suction-held by a suction bar 37 disposed near the film supply roller 12 and downstream of the winding roller 26 on the film side. (See FIG. 3).

The suction bar 37 is disposed on the frame of the laminator 10 in the axial direction of the film supply roller 12 in parallel with the film supply roller 12 and over a substantially entire width range of the film 16. A suction hole 37A is formed to suck and hold the film rear end 39 based on a negative pressure applied by a negative pressure source (not shown). If the film is not sucked, the rear end portion 39 of the film hangs down, making the operation extremely difficult.

On the other hand, as shown in FIGS. 4 and 5, a new laminator film roll 14 to be replaced with the laminator film roll 14 for which rewinding has been completed has a laminator film 16A and a protective film at the film draw-out end 38. The double-sided adhesive tape 40 is applied to the contact surface of each of the contact surfaces 16B at positions slightly from the center from both ends in the width direction, the edges are aligned with the edges of the drawn-out end portions 38, and the surfaces are covered with release paper 42 in advance. Keep it.

When replacing the laminator film roll 14, a new laminator film roll 14 is set on the film supply roller 12, and its film draw-out end 38 is placed on the upper surface of the laminator film roll 14. A large gap is opened between the photosensitive dry film 16A and the protective film 16B at the film draw-out end 38, and the film rear end 39 of the laminator film roll 14 held by the suction bar 37 is pulled away from the suction bar 37. Insert (see FIG. 4).

Here, since the double-sided adhesive tape 40 and the release paper 42 are provided inside the film draw-out end 38 and aligned with the edges, the film draw-out end 3
8 can be easily opened.

With the rear end 39 of the film inserted, the release paper 42 is peeled off to expose the adhesive surface of the double-sided adhesive tape 40, and this is pressed against the rear end 39 of the film to adhere (see FIG. 6). .

Since the double-sided adhesive tape 40 is attached to both the photosensitive dry film 16A and the protective film 16B, the photosensitive dry film 16A at the film withdrawal end portion 38 becomes the photosensitive dry film 16A at the film rear end portion 39. Further, the protective film 16B at the film drawing end portion 38 is separately connected to the protective film 16B at the film rear end portion 39, respectively.

On the other hand, a new take-up roller 26 for taking up the protection film 16B is set, and the tip of the protection film 16B hanging from the guide roller 24 is wound around the new take-up roller 26.

In this state, when the entire film is manually fed, the film separating member 22 is positioned at the position of the film separating member 22 and the leading end 3 of the film drawn out after the preceding protective film 16B.
8, the protective film 16B is peeled off from the photosensitive dry film 16A.
Is fed into a predetermined path following the preceding photosensitive dry film 16A. Trailing photosensitive dry film 1
After the tip of 6A reaches the main vacuum plate 28, a predetermined feed is applied to the rotary cutter 32.
, And the leading end of the leading portion and the trailing portion are discarded.

Therefore, as in the conventional case, the protective film 16B is manually peeled off from the photosensitive dry film at the film draw-out end 38, and the photosensitive dry film 16A is removed.
Is not necessary to wind around the rollers on the film supply path.

For this reason, the setting of the film on the new upper and lower film rolls 14 for laminator conventionally required 10 minutes, but in the case of the above embodiment, it could be completed in about 5 minutes.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG.

The photosensitive dry film 16A and the protective film 16B are both very thin and easily adsorb to each other due to static electricity or the like, and are inconvenient to handle. When the film trailing end 39 is inserted into the opened film drawer end 38, there is a problem that it is similarly difficult to handle.

In the second embodiment, as shown in FIG. 7, a release sheet 44 that is difficult to adhere to the adhesive tape is inserted into the drawer end 38 in advance, and this is used as a guide to make the film rear end 39 To the opened film drawer end 3
8 is inserted.

Here, the release sheet 44 can protrude from the longitudinal edge 38A and the width edges 38B, 38C of the film draw-out end 38, as shown by the two-dot chain line in FIG. Size. When the release sheet 44 is used, since the double-sided adhesive tape 40 at the film draw-out end 38 is hard to adhere to the release sheet 44, the release sheet 4 is previously removed from the double-sided adhesive tape 40.
The release sheet 44 can be inserted in a state where the sheet 2 is peeled off. By doing so, by pulling out the release sheet 44 to the rear end 39 of the film inserted along the release sheet 44, the film draw-out end 38 can be immediately bonded.

Since the release sheet 44 is hard to adhere to the double-sided adhesive tape 40, the release sheet 44 easily falls even when it is inserted into the film drawing end 38. In this case, the release sheet 44 is inserted as deep as possible into the film draw-out end 38. In the case where it cannot be inserted deeply into the film draw-out end portion 38, as shown in FIG. 6, both sides or one side (preferably the surface on the protective film 16B side) of the insertion end of the release sheet 44 is adhered to both sides. It is preferable that the tape 46 is bonded in advance so that the tape 46 does not fall off from the film draw-out end 38 at the time of insertion.

In this manner, the double-sided adhesive tape 46 enters the closed film draw-out end 38 and is prevented from falling off by the double-sided adhesive tape 40 adhered to the inner surface of the film draw-out end 38. .

Next, a third embodiment of the present invention shown in FIG. 8 will be described.

In the third embodiment, the release paper covering the pair of double-sided adhesive tapes 40 is a single release paper 43,
Further, the release paper 43 is arranged so as to protrude from the edges of the double-sided adhesive tape 40 and the film drawing end portion 38.

In this embodiment, a double-sided adhesive tape 40 is attached to both sides of the release paper 43, and this is
6A and the protective film 16B. When both films 16A and 16B are opened in this state, the double-sided adhesive tape 40 adheres to these films 16A and 16B and separates from the release paper 43.

Accordingly, the double-sided adhesive tape 40, the release paper 43
Is very easy, and since the portion provided with the double-sided adhesive tape 40 is not closed by the laminated film 16A and the protective film 16B, the work of opening the film draw-out end 38 becomes easy.

Next, a fourth embodiment of the present invention shown in FIG. 9 will be described.

In the fourth embodiment, the release sheet 44 also serves as release paper covering the double-sided adhesive tape 40. In this embodiment, the double-sided adhesive tape 40 is attached in the same manner as in the third embodiment.

In this way, the operation of peeling off the release paper 42 becomes unnecessary, and the release sheet 44 can be prevented from falling off.

In the embodiment using the releasable sheet 44, the releasable sheet 44 has a width protruding from both side edges 38B and 38C in the width direction of the drawer end 38. The release sheet is not limited to this, and the release sheet may be any one that facilitates opening the drawer end 38 and facilitates insertion of the film rear end 39. However, it is not always necessary to protrude from both ends 38B and 38C in the width direction of the drawn end.

In the above embodiment, the double-sided adhesive tape 40 and the release paper 42 provided inside the film draw-out end 38 are provided at two places in the film width direction. However, the present invention is not limited to this. Instead, three or more portions may be provided at appropriate intervals, and may be provided over the entire area in the width direction.

Further, in the above embodiment, the double-sided adhesive tape 40 and the release paper 42 are attached to the film draw-out end 38 side of the replaced new laminator film roll 14, but the present invention is not limited to this. Instead, a double-sided adhesive tape and release paper may be provided on the film rear end 39 side, contrary to the above-described embodiment.

The cut and formed rear end portion 39 is suction-held by the suction bar 37.
A hook bar that simply hooks the rear end portion 39, a bar having an adhesive layer that can be peeled off, a nip for sandwiching,
Other holding means such as fixing means for blowing and fixing the bar by air may be used.

[Brief description of the drawings]

FIG. 1 is a schematic side view schematically showing a laminator to which the present invention is applied.

FIG. 2 is an enlarged sectional view showing the vicinity of a film supply roller and a film separating member in the laminator.

FIG. 3 is a sectional view showing a state after cutting and forming a rear end portion of the laminator film;

FIG. 4 is an enlarged side view showing the vicinity of a drawing end and a rear end of a laminator film connected by the method of the present invention.

FIG. 5 is a perspective view of the drawer end and the rear end.

FIG. 6 is a cross-sectional view showing a state in which a drawing end portion and a rear end portion of the laminator film are connected.

FIG. 7 is a schematic sectional view showing a film connecting process according to a second embodiment of the method of the present invention.

FIG. 8 is a schematic sectional view showing a process of attaching a double-sided tape according to a third embodiment of the present invention.

FIG. 9 is a schematic sectional view showing the relationship between a double-sided pressure-sensitive adhesive tape and a release sheet according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Laminator 12 ... Film supply roller 14 ... Photosensitive dry film roll 16 ... Film 16A ... Photosensitive dry film 16B ... Protective film 18 ... Guide roller 22 ... Film separation member 26 ... Take-up roller 28 ... Main vacuum plate 37 ... Suction Bar 38: Draw-out end 38A: Longitudinal edge 38B, 38C: Width end 39: Rear end 40: Double-sided adhesive tape 42, 43: Release paper 44: Release sheet 46: Double-sided adhesive tape

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29L 31:34

Claims (12)

(57) [Claims] 1. A laminator film comprising a photosensitive dry film covered on one side with a protective film, and a laminator film roll. Peeled by the member, while the peeled protective film is taken up by a take-up roller, and the photosensitive dry film is supplied to a laminator body,
When exchanging the preceding laminator film roll with a new laminator film roll, one end of the film withdrawal end of the following laminator film roll to be exchanged and supplied with the film rear end of the preceding laminator film roll. On one surface of the photosensitive dry film and one surface of the protective film in contact therewith, a pressure-sensitive adhesive layer and a release layer covering the same are formed in advance, and the photosensitive dry film and the protective film are opened at the end, After peeling the release layer, the other end is inserted between the open photosensitive dry film and the protective film, and the adhesive layer allows the preceding photosensitive dry film and the subsequent photosensitive dry film to be inserted. A method of connecting a laminator film at the time of replacement, wherein a dry film is connected to each of a preceding protective film and a following protective film. 2. The release layer according to claim 1, wherein the release layer is a single release layer interposed between the adhesive layer on the photosensitive dry film side and the adhesive layer on the protective film side. Connection method when replacing the laminator film. 3. The release layer according to claim 2, wherein the release layer protrudes from the longitudinal edge of the one end and is at least near the both ends in the width direction. A method for connecting a laminator film when replacing the laminator film, comprising extracting the mold release sheet, and connecting the preceding and subsequent laminator films. 4. A method according to claim 3, wherein said release sheet has a size protruding from both ends in the width direction of said one end. 5. The release layer according to claim 1, wherein:
A connection method for exchanging a laminator film, wherein the laminator film has a size protruding from the adhesive layer and protrudes from a longitudinal end of the laminator film. 6. The photosensitive dry film and the protective film according to claim 1, wherein one end edge of the adhesive layer of the photosensitive dry film and the protective film coincides with one of the end edge of the drawing end portion or the end edge of the rear end portion. A method for connecting a laminator film at the time of replacement, wherein 7. The laminator according to claim 1, wherein the adhesive layer of the photosensitive dry film and the protective film and the release layer covering the adhesive layer are formed on the leading end of the subsequent laminator film. Characteristic connection method when replacing laminator film. 8. The laminator according to claim 1, wherein the adhesive layer of the photosensitive dry film and the protective film is intermittently arranged in a width direction of a laminator film end. Connection method at the time of film exchange. 9. The laminator according to claim 1, wherein the photosensitive dry film and the adhesive layer of the protective film are continuously arranged in the width direction of the laminator film end. Connection method at the time of film exchange. 10. The take-up roller according to claim 1, wherein the protection film is taken up on the take-up roller while the protection film is taken up by the take-up roller. A method for connecting a laminator film when exchanging the film. 11. The method according to claim 10, wherein after removing the take-up roller, the film for the preceding laminator is cut near the take-up roller set position to form a rear end. Connection method when changing the laminator film. 12. The film for a preceding laminator according to claim 1, wherein a rear end portion of the film roll for the preceding laminator is held by holding means near the film roll for the preceding laminator. Roll
A method for connecting a laminator film at the time of exchanging, wherein the laminator film roll is replaced with a subsequent laminator film roll and then connected to a film drawing end of the subsequent laminator film roll.