JPH05213521A - Device for separating and pulling out film arranged in layer on carrier material - Google Patents

Abstract

PURPOSE: To effectively and fully automatically separate a film by providing a separator having a wedgelike separating knife and longitudinally moved by a motor in an apparatus for separating and pulling the film from a carrier material attached with a photosensitive layer or the like. CONSTITUTION: An apparatus 31 for separating a film 22 from a carrier material 21 comprises a separator 10 longitudinally movable on a base plate 15 along a main shaft 12 disposed oppositely to a transparent plate 16. The plate 16 has a chamfered surface 25, and the material 21 having the films 22 in a laminar state is interposed between the plate 16 and the plate 15. The separator 10 has a wedge-like separating knife 13. The film 22 on the material 21 separated by the knife 13 rises on the plate 16 through the surface 15 to grasp the edge of the film 22, and the film 22 is separated in this state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for separating and separating layers of film provided on a carrier material, which comprises a base plate and a plate, a part of which is a certain distance above the base plate. Have.

[0002]

BACKGROUND OF THE INVENTION Photosensitive layers such as exposed photoresist layers or color proof films on circuit boards are generally covered with a protective film. In the production of color proof films and printed circuit boards, the substrate is first coated with a photosensitive material. This material is then covered with a transparent film. The laminate, made up of film and photosensitive layer, is then imaged with a mask one after the other. In this exposure, the photosensitive layers are attached differently so that the exposed portion adheres to the substrate more firmly than the unexposed portion to form an image. Separation of the protective film and the substrate from each other forms, for example, a positive image on the substrate and a negative image on the protective film.

In the production of circuit boards for electronic circuits, a substrate is provided with a layer of a photosensitive dry resist film. The dry resist film is exposed using an image mask on which the electronic circuit is drawn, after which the protective film is removed and the dry resist film is developed in various processing steps. The protective film on the dry resist film allows exposure with almost no dust, and the coated circuit boards can be transported in a stacked state. The circuit board has, in particular, one or more borders, on which borders a protective film is not provided in layers and at which borders the substrate does not have a protective film. Can be gripped with a gripping tool or by hand.

In some laminating operations, it is desirable to completely transfer the coating from one surface to another, such as when transferring a colored resin layer from a substrate to a receiving material. In such a case, the coated substrate and the receiving sheet on the substrate are passed through the laminating nip of a heated laminating roller under pressure. The substrate and receiving sheet are then separated from each other, thereby transferring the colored resin layer from the substrate to the receiving sheet. The problem with such a transfer process is that the transfer of the colored resin layer is incomplete.

US Pat. No. 4,752,346 describes an apparatus and method for removing and separating films that have been adhesively attached to each other. This device has a platform made of a metal or a material with a conductive layer on its surface. Bar edges or wedges are provided on the surface. Both the bar edge and the platform are grounded.
The bar edges are positioned on the platform with supports at each end. These supports are surrounded by springs, penetrate the bar edge and project beyond the bar edge. Therefore, a variable clearance can be created between the underside of the bar edge and the surface of the platform, which
Laminates of various thicknesses consisting of substrate and film can be passed between the bar edges and the surface of the platform. For example, a colored photosensitive layer coated with a receiving sheet is applied to a transparent polyester film with an adhesive layer. This sandwich configuration runs through the nip of the laminating rollers and is then introduced between the bar edge of the disengager and the platform. The transparent polyester film is bent upwards over the edge angle and pulled over the bar edge by the film taken along the chamfered surface of the bar edge. As a result, the polyester film is separated from the receiving sheet or the receiving film and the transfer of the adhesive layer and the colored photosensitive layer to the receiving sheet takes place.

German Patent 3,443,939 discloses a process for removing a protective film from an exposed photoresist and a circuit board laminated with an adhesive element in the form of a sheet. The adhesive element is adhesively attached to the protective film to be removed and then pulls the circuit boards apart in a substantially diagonal direction. In this case, the circuit board is 0 <α between the front edge of the board and the perpendicular to the transfer direction.
Adjusted by a rotating device so that an angle of <90 ° is set. Double-sided adhesive elements are then placed on both the upper and lower front corners of the substrate so that the uncovered portion of the substrate outside the border of the protective film can be gripped and the roller can pull the protective film apart. Set up. The device for carrying out the steps described above comprises a transfer-adjustment device by means of which the body in the form of a substrate can be swiveled out of its transfer direction into a working position and additionally a double-sided adhesive element is attached. A device for designing in the form of tongs, having a plate-shaped body for receiving the support rollers, and further for removing the adhesive element and the protective film from the body in the form of a substrate. Have. This device has a system of rollers arranged parallel to the axial direction and is equipped with a device for keeping the distance between the rollers constant.

German Patent No. 3,339,723 discloses a method and apparatus for removing a protective film from a laminated circuit board, which is located above and below the laminated circuit board running through transfer rollers. Is provided with a single-sided adhesive tape, which is subsequently removed by peeling the adhesive tape over the edge of the bar to form a tear gap with the circuit board and is carried away for storage. The bar edges form a 45 ° angle with the transfer device and the adjacent faces also form a 45 ° angle with the substrate plane.

In the known device for removing the protective film from the laminated circuit board, whether continuous or endless adhesive tape or individual double-sided adhesive elements are used, additional material is used. Required and in large quantities of these materials. Furthermore, a separate step has to be carried out beforehand in order to apply either the adhesive tape or the adhesive element on the protective film of the circuit board.

[0009]

It is an object of the present invention to overcome this, and to ensure that the film is completely and completely removed from the carrier material to which one or more photosensitive layers are applied. An apparatus and method is proposed which is done without tape or adhesive elements.

[0010]

According to the device specified in the prior art part of claim 1, the object is to move back and forth under the action of a motor along a main axis on a laminate of film and carrier material mounted on a base plate. A movable separating device, a separating device having a wedge-shaped separating knife and a gap on the wedge-shaped separating knife and inclined obliquely to the horizontal and parallel to the wedge-shaped separating knife, and vertically penetrating the base plate. Achieved by a stay that holds the underside of the laminate firmly while passing the removed film corners through the gap.

In a refinement of the invention, the separating device is mounted on the underside of an angled frame, and the rollers are rotatably mounted on the lower ends of the vertical legs of the angled frame.

In a further refinement of the invention, the separating knife forms the underside of this gap, which constitutes an angle of 5 ° to 25 °, in particular 10 ° to 20 ° with respect to the horizontal in the direction of advance of the separating device. ..

Another improvement of the invention is provided by the features of claims 4-13.

A method for separating and separating a film from a carrier material, the laminate comprising the film and the carrier material having a diagonal line aligned with the direction of advance of the separating device and a corner of the film using a separating knife. And the film corners are passed through a gap in the separating device that extends obliquely to the horizontal and are held securely in this gap in a self-clamping manner by a separating knife, the film being advanced simultaneously with advancing the separating device. A method, wherein the method is lifted from the base plate and pulled away by running over the plate on the base plate.

In the case of large laminates and / or thin carrier materials that do not completely fill the gaps due to their small thickness, the film corners are subjected to an additional clamping force in the diagonal gaps and the film passed through the gaps. Helps self-clamping in the corners.

Another step is provided by the features of claims 16 and 17.

The invention will be described in detail below with reference to two exemplary embodiments shown in the drawings.

[0018]

1 shows a carrier material 21 to a film 2
A device 31 for separating or separating the two is shown schematically in a side view. The device 31 has a base plate 15, which is supported on four upright legs 29 in its corners, and in addition, the device 31 comprises a transparent plate 1
6 and a guide body 11 and a main shaft 12 driven by a motor arranged facing each other, on which a separation device 10 that can move back and forth on a base plate 15 as indicated by a double-headed arrow A is provided. It is provided. Furthermore, the device 31
Has a stay 17 penetrating the base plate 15,
This stay can be moved up and down as indicated by the double-headed arrow B. The transparent plate 16 is arranged at a predetermined distance on the base plate 15 and has a chamfered surface 25.
In the gap between the base plate 15 and the plate 16,
Carrier material 21 provided with film 22 in layers
Is pushed. As is apparent from FIGS. 1 and 2, the plate 16 does not completely cover the base plate 15, but is shorter than the base plate 15 in the advancing direction of the separating apparatus 10.

The plate 16 is made of a transparent material such as glass or plastic, glass being preferred. The carrier material 21 is preferably a film, on which is applied, for example, a colored photosensitive synthetic resin layer. The layered film 22 on the synthetic resin layer serves as a receiving film for the colored synthetic resin layer, which is generally a polymer layer containing the corresponding dye. Film 22 from carrier material 21
During removal, i.e. separation, of the colored plastic layer transfers from the carrier material to the receiving film 22. This is followed by exposure of the color proof film thus obtained.

Further, the carrier material 21 may be a circuit board having a photoresist pattern exposed, in which case the film 22 is a protective film of the exposed photoresist pattern. After exposure of the circuit board, the protective film is removed and the photoresist pattern is developed in various baths. The protective film must be removed without damaging the photoresist pattern and / or leaving the protective film on the photoresist film.

As can be seen in FIG. 1, a housing 30 shown, partially removed, surrounds the spindle 12. The guide rods 27 and 28 run along this main axis along which the separating device 10 is moved by the guide body 11.

As can be seen from FIG. 2, the film 22 is
The film 2 on all boundaries 32 on the carrier material 21
Carrier material 2 so that 2 is not provided in layers
1 in layers. The laminate 23 consisting of the carrier material 21 and the film 22 comprises a base plate 15 and a plate 16 such that the diagonal 26 of the rectangular or square laminate is aligned with the advancing direction of the separating device 10.
It is located between and. The film corner 24 of the film 22 rests on the diagonal 26.

As can be seen in FIG. 3, the separating device 10 has a wedge-shaped separating knife 13 on which a gap parallel to the knife and inclined with respect to the horizontal with the same inclination as the upper surface of the wedge-shaped separating knife. There are fourteen. In FIG. 3, two positions in the forward direction of the separating device 10 are shown. In the first left-hand position, shown in broken lines, the separating device 10, and thus the separating knife 13, is arranged just before the film corner 24 and the removal of the film corner 24 from the carrier material 21 has not yet taken place at this point. .. The separating device 10 is attached to the underside of an angle frame 18 having horizontal and vertical legs. A roller 20 is rotatably mounted at the lower end of the vertical leg 19, which roller rolls first on the laminate 23 during advancing. In the second right-hand position of FIG. 3, the wedge-shaped separating knife 13 disengages the film corner 24 of the film 22 from the carrier material 21,
4 is passed through the gap 14. The roller 20 is then placed directly on the front side, ie at the beginning of the chamfered surface 25 of the plate 16. In this position of the separating device 10, the stay 17 that vertically penetrates the base plate 15 has the laminate 2
3 is pressed against the underside of the plate 16 to hold it firmly, so that the removed film corner 24 can be passed through the gap 14 without difficulty. The stay 17 can be moved up and down by air pressure or hydraulic pressure. The pneumatic or hydraulic devices required for this are well known in the art and are therefore not shown.

The separating knife 13 forms to some extent the underside of the gap 14, which constitutes an angle of 5 ° to 25 ° with respect to the horizontal in the direction of advance of the separating device 10, in particular 10 ° to 20 °. In the particular embodiment shown, the angle of the gap with respect to the horizontal is 15 °. The gap length is equal to or greater than 20 mm. In particular, tests have shown that a gap length of 30 mm is preferred. The film corner portion 24 is entirely passed through the gap by up to 20 mm. Further advancement of the separating device causes the passing film corners 24 to be held firmly in the gap by the separating knife 13 in a self-clamping manner.

FIG. 4 shows the position of the separating device 10 in which the roller 20 rises above the chamfered surface 25 of the plate 16 and consequently lifts the separating device 10 from the laminate 23 on the base plate 15. In this connection, it must be pointed out that the separating device 10 is vertically movable with respect to the base plate 15. In this position, the film 22 is guided in a bend around the leading edge of the chamfered surface 25, i.e. around the start edge of the chamfered surface 25, and another bend, opposite the first bend, is separated. Is passed through the gap 14. In this position, of course, the stay 17 is lowered and the laminate 23 is no longer firmly held.

In FIG. 5, the position of the separating device 10 is shown as moving along the surface of the plate 16.
The angle α of the wedge-shaped separating knife 13 is the angular range specified above for the gap 14, or the same 15 ° as in the preferred embodiment of the gap 14 described above. In this position, the roller 20
Is lifted from the upper side of the plate 16, which is caused by the lowest position of the roller 20 being above the horizontal plane of the wedge-shaped separating knife 13, as can be seen, for example, in FIG. This strategy is based on the separation knife 13
Are necessary to allow the film corners 24 to be easily removed from the carrier material 21. Furthermore, it can be seen from FIG. 5 that the stay 17 has been lowered and has no contact with the underside of the laminate or carrier material. The advancing direction of the separating apparatus 10 is indicated by an arrow C in FIGS. 3, 4 and 5.

Separation or separation of the film from the carrier material takes place as follows.

A laminate 23 consisting of a film 22 and a carrier material 21 is pushed diagonally between the base plate 15 and a plate 16 which is arranged at a certain distance above this base plate and which has a chamfered surface 25 on the running side. The laminate 23 is firmly held by the stay 17 on the lower side when the apparatus is started. The top film 22 to be pulled apart is about 2 cm behind the carrier material 21, measured diagonally. In other words, film 2
The boundary 32 of carrier material without 2 is 2 cm.

When driven by the motor 11 via the main shaft 12, the lightly pressed separating knife 13 causes the carrier material 2
1 is advanced in the direction of the leading edge or film corner 24 of the film 22 to disengage the film corner 24 from the carrier material 21. The film corner 24 of the film 22 is separated by the separating knife 13.
It is pushed about 20 mm into the gap 14 arranged above.
The stay 17, which secures the laminate 23 from below, is returned to its starting position, releasing the laminate. Therefore, the separating knife 13 guided by the roller 20 runs upward on the chamfered surface 25 arranged on the front side of the plate 16. As a result, the film 22 placed in the gap 14 on the separating knife 13 is bent at an angle of 5 ° to 20 °, in particular 15 °, and the film 2 in the separating knife 13 and the gap 14 is bent.
A self-clamping hold is performed between the two.

The separating operation is continued by advancing the separating knife 13 further, so that the two parts, one layered on the other, are removed from each other and separated in opposite directions.

Another embodiment of the separation 10 is shown in FIG. 6, which comprises a pressure roller 34 in a separation knife head 34 screwed to the separation knife 13. 3 is different from the separating device according to FIGS. 3, 4 and 5. The pressure roller 33 is mounted on the bearing shaft 35 in parallel oval holes 36, contacts the upper side of the wedge-shaped separating knife 13 and moves up and down along the upper side of the separating knife during the back and forth movement of the separating device 10. Roll to. The oval hole 36
A separating knife head 34 extends at an angle with respect to the diagonal gap 14. The pressure roller 33 exerts an additional clamping force on the corners of the film inserted into the gap 14, and is a large and heavy laminate corresponding to its large size, or a diagonal gap due to its small thickness. It assists self-clamping in the case of thin carrier materials that do not fill completely and therefore only apply very weak self-clamping.

[Brief description of drawings]

FIG. 1 is a side view of a device according to the present invention, shown partially removed.

FIG. 2 is a plan view of the device according to FIG.

FIG. 3 is a side cross-sectional view of a portion of the present device with the separating device immediately in front of the film corner of the film to be removed from the carrier material.

FIG. 4 is a side sectional view of a separating device that runs on a chamfered surface of a plate with a corner of a film passing through a gap.

FIG. 5 is a side cross-sectional view of a separator running above the plate with the film partially removed from the carrier material.

FIG. 6 is a side cross-sectional view of another embodiment of a separation device having a pressure roller within the separation knife head.

[Explanation of symbols]

 10 Separation Device 11 Motor 12 Spindle 13 Wedge Separation Knife 14 Gap 15 Base Plate 16 Transparent Plate 17 Stay 18 Angle Frame 19 Vertical Leg 20 Roller 21 Carrier Material 22 Film 23 Laminate 24 Film Corner 25 Chamfer 26 Diagonal 27, 28 Guide Rod 29 Upright leg 30 Housing 32 Boundary

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Martin, Stork Germany Mülheim / Main, Otto-Hahn-Strasse, 5

Claims (17)

[Claims] 1. Separating a film applied in layers on a carrier material having a base plate and a plate, a portion of which is at a distance above the base plate,
In the device for separating, the separating device can be moved back and forth along the main axis by the action of a motor on a laminate of film and carrier material resting on a base plate, said separating device being a wedge-shaped separating knife and a gap parallel thereto. The gap is on the wedge-shaped separating knife and is inclined obliquely to the horizontal, and the stay penetrates the base plate vertically, which stays in the laminate while the removed film corner is passed through the gap. Hold the lower side firmly,
apparatus. 2. The separating device is attached to a lower side of an angle frame, and a roller is rotatably attached to a lower end of a vertical leg of the angle frame.
The device according to. 3. The device according to claim 1, wherein the separating knife forms the lower side of the gap and forms an angle of 5 ° to 25 °, in particular 10 ° to 20 ° with respect to the horizontal in the direction of advance of the separating device. .. 4. The device according to claim 1, wherein the length of the gap is equal to or longer than 20 mm. 5. The length of the gap is 30 mm.
The device according to. 6. A pressure roller is disposed in the separation knife head above the diagonal gap, and the pressure roller is movable back and forth over the inclined upper side of the separation knife.
The device according to any one or more of: 7. The bearing shaft of the pressure roller is mounted in parallel oval holes of the separating knife head, which holes extend at a predetermined inclination with respect to the oblique clearance.
The device according to. 8. A chamfered surface is provided on the front side of the plate facing the separating device, on which chamfering device runs upwards above the plate with the aid of rollers.
Or the device according to 2. 9. The apparatus of claim 1, wherein the plate is made of a transparent material such as glass or plastic. 10. The apparatus according to claim 1, wherein the stay can be moved up and down pneumatically or hydraulically. 11. The film provided in layers on a carrier material is a color film and the laminate is
The apparatus of claim 1, wherein the diagonal of the rectangular or square laminate is positioned between the base plate and the plate so as to align with the direction of advance of the separator. 12. The device of claim 1, wherein the carrier material is a film. 13. The apparatus according to claim 1, wherein the carrier material is a circuit board on which a photoresist pattern is exposed, and the film is a protective film. 14. A method for separating and separating a film from a carrier material, the laminate comprising the film and the carrier material having a diagonal line aligned with a direction of advance of a separating device and a film corner using a separating knife. Removed from the carrier material, the film corner is passed through a gap in the separating device that extends obliquely to the horizontal and is held securely in this gap by a separating knife in a self-clamping manner, the film advancing the separating device. At the same time, the method is lifted from the base plate and pulled away by running over the plate on the base plate. 15. The method of claim 14, wherein additional clamping force is exerted on the film corner in the diagonal gap to assist in self-clamping the film corner through the gap. 16. The method of claim 14 wherein the lower side of the laminate is lifted away from the film corner prior to the removal of the film corner to press the laminate against the underside of the plate, thereby holding the laminate securely. the method of. 17. The method of claim 1, wherein the removed film corner is passed through the gap of the separator to hold it firmly while simultaneously releasing the laminate of film and carrier material.
The method according to 4 to 16.