JP2011178523A - Film/thin-film separating and continuous thin-film splicing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin-film splicing device capable of nipping a thin film formed on a carrier film by coating, stabilizing a peeling position by determining it at the nip position, peeling the thin film without causing defective peeling such as zipping, removing an uncoated part on which the thin film is not formed, and continuously webbing thin-film units by automating the creation of the opportunity of separation so that the length of the thin film can be increased by automatically splicing two or more thin films. <P>SOLUTION: The film/thin-film separating and continuous thin-film splicing device includes a system for determining the peeling position of a thin film formed on a carrier film by coating at the nip position, adjusting a peeling angle, and peeling the thin film and a suction system for a peeling roller which creates the opportunity of the peeling of the start end of the thin film of a subsequent thin-film unit, removes the uncoated part, and continuously joins the thin-film units for webbing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an apparatus for continuously peeling a thin film formed on a carrier film, connecting only the thin film from a carrier film having an uncoated portion, and forming a web.

  In recent years, the field of use of functional films has expanded, and many production methods have been devised depending on the required functions and the physical properties of raw materials. One method for producing such a functional film is a method for producing a thin film by a coating method. This is because a thin film is formed on a carrier film by applying a liquid that becomes a thin film on a film called a carrier film, and then drying, and then the thin film is peeled off from the carrier film to obtain a thin film-only web. .

  The functional thin film obtained through the peeling step is characterized in that a smooth surface can be obtained even when a coating liquid with poor leveling properties is used. This is because the surface property of the surface in contact with the carrier film is transferred. That is, by using a carrier film having a smooth surface, a smooth surface can be obtained relatively easily on one side of the functional thin film.

  In a thin film manufacturing method using a coating method, in order to improve productivity, a roll-shaped carrier film is often unwound to form a functional thin film, and after drying, it is often wound into a roll. Since the functional thin film is protected by winding, it is desirable that the roll-shaped raw material can be unwound, peeled off and wound up again in the peeling step. In addition, since functional thin films are often expensive, it is required that the functional thin film can be peeled stably so as not to cause poor peeling. Furthermore, in order to improve the efficiency of the downstream process, when the high-functional thin film has been peeled off, the functionality of the next functional thin film is connected to the end of the previous functional thin film. It is desirable that the thin film can be elongated. Further, it is desirable that work such as creation of a trigger for peeling is automated.

  However, regarding the coating of the thin film on the carrier film, uncoated portions are formed in the unwinding portion and the winding portion of the carrier film. In increasing the length of the thin film, it is necessary to remove the uncoated part and connect it.

  It is difficult to make the adhesive force between the carrier film and the thin film uniform over the entire surface in the production in which the thin film is peeled off from the carrier film to obtain a web only of the thin film. In addition, since the electrical force due to the peeling charge changes one by one, it is difficult to keep the peeling position constant, that is, the peeling position is the peeling position when the film is separated without being held in the roll. As a result, it always moves back and forth, and as a result, defects such as patterns called zipping are likely to occur.

  As such a peeling device, a peeling device has been proposed in which the peeling force is stabilized by a peeling roller and the dancer roller does not cause fluctuations in tension transmitted to the web after the peeling portion (Patent Document 1).

However, the peeling device is effective in stabilizing the web tension after the peeling portion. However, even if the peeling angle is determined by the peeling roller, it is not configured to nip, so peeling due to non-uniform peeling force. The position moves back and forth. The stability of the separation position between the film and the thin film, i.e., the peeling position, is not taken into consideration, so the peeling position moves back and forth in the film flow direction according to variations in the film conveyance speed and the adhesion between the carrier film and the functional film. End up. There is a dancer roll on the downstream side, but it does not contribute to the stability of the peeling position. As a result, peeling failure such as zipping occurs and the productivity of the functional thin film is lowered. In addition, there is no consideration for the work of creating a trigger for peeling or the lengthening of the functional thin film.

  For automatic joining, in a sheet product having an optical member and a release film, the width direction end surface of the first sheet product and the width direction end surface of the second sheet product are opposed to each other, and the optical members of the respective sheets are separated from each other. A manufacturing method of a connection sheet product which connects mold films with a connecting member has been proposed (Patent Document 2).

  However, in the connecting method, it is necessary that the end surfaces of the optical member and the release film coincide with each other. On the other hand, in the production of a functional thin film by coating, there is an uncoated portion of only the carrier film before and after the functional thin film is coated. In the configuration in which the functional thin film is formed from the middle of the carrier film, the above method cannot be used. When only the coated portion of the functional thin film is cut out to form a roll, it is necessary to cut off the start and end portions of the functional thin film excessively, and this is an economical problem for expensive functional thin films.

JP 2002-201439 A JP 2009-143224 A

  The present invention has been made in view of the problems to be applied, and stably removes a thin film coated and formed on a carrier film without defective peeling such as zipping, and removes an uncoated part where no thin film is formed. Another object of the present invention is to provide a thin film joining apparatus that can automatically create a trigger for peeling and continuously form a web of a single thin film and can be elongated by automatically joining two or more thin films.

  As a means for solving the above-mentioned problems, the invention according to claim 1 is a system in which a peeling position of a thin film coated and formed on a carrier film is determined at a nip position, a peeling angle is adjusted and peeling is continued. It was equipped with a peeling roll adsorption system that created the trigger for peeling of the thin film starting edge of the thin film, detected the start and end of the thin film, removed the uncoated part, and joined the thin film continuously to form a web. Is a device for peeling and continuous thin film and film.

  The invention according to claim 2 is the apparatus for peeling and continuous film and thin film according to claim 1, wherein the adsorption system of the peeling roll is provided by an adhesive roll. .

  The invention described in claim 3 is the apparatus for peeling and continuous film and thin film according to claim 1, wherein the adsorption system of the peeling roll is provided by a suction roll. .

  The invention according to claim 4 is the film according to any one of claims 1 to 3, wherein the adsorption system for holding the end of the thin film is provided by an adhesive roll. And a continuous thin film connecting device.

  The invention according to claim 5 is the film according to any one of claims 1 to 3, wherein the suction system for holding the end of the thin film is provided by a suction roll. And a continuous thin film connecting device.

  The invention according to claim 6 is characterized in that the means for holding the end of the thin film is provided by a nip roll, and the film and thin film according to any one of claims 1 to 3 And continuous thin film linking device.

  The invention described in claim 7 has means for detecting the presence or absence of the thin film, and peeling of the film from the thin film according to any one of claims 1 to 6 and continuous thin film It is a bridging device.

  According to the present invention, when the thin film coated and formed on the film substrate is peeled off from the film, the film is formed by the system that determines the peeling position of the thin film coated and formed on the carrier film at the nip position and adjusts the peeling angle. It is possible to eliminate peeling defects such as zipping, which occur due to variations in the transfer speed, the adhesion between the carrier film and the functional film, and fluctuations in the peeling position.

  Also, remove the means for detecting the presence of thin film and the uncoated part continuously from the uncoated part and the uncoated part of the coated film that are generated in the thin film coating formation. The strip roll adsorbing system that joins the thin film single webs can facilitate the lengthening of the downstream process for high efficiency.

Schematic diagram showing film and thin film peeling and continuous thin film joining device Conceptual diagram showing film and thin film peeling and preparation state of thin film joint of continuous thin film joining device The conceptual diagram which shows the operation state of the state which changes the position of the peeling angle adjustment roll in the peeling of a film and a thin film, and a continuous thin film joining apparatus, and a thin film joint part Conceptual diagram showing a state in which the end of the thin film is held by a nip roll for joining operation made of an adhesive rubber material Conceptual diagram showing a state in which the end of the thin film is held by a nip roll for connecting operation composed of a suction roll Schematic diagram showing a suction system for nip rolls for connecting operation consisting of suction rolls Conceptual diagram showing the state of thin film end holding by nip

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a peeling apparatus according to the present invention, and is not intended to specify the present invention as an embodiment.
[Embodiment]

  Hereinafter, as an example of an embodiment of the present invention, an apparatus for peeling a carrier film 2 from a thin film 3 and a continuous thin film joining device will be described with reference to the drawings. The peeling system includes an unillustrated upstream unwinding section, a nip roll 4, a peeling roll 5, a peeling angle adjusting roll 8, and a downstream unwinding section of a carrier film. The peeling part 21 of the web coated with the functional thin film on the carrier film that has come out from the unwinding part is in a state of being nipped by the nip roll 4, and when the thin film reaches the nip part, the peeling roll 5 having an adsorption function is formed. It is adsorbed and peeled off from the carrier film 2.

Thereafter, the thin film 3 is conveyed while being adsorbed to the peeling roll 4, passes through the joining operation nip roll 6, and travels to the undescribed thin film winding portion. On the other hand, the carrier film 2 passes through the roll 8 for adjusting the peeling angle, and goes to the unillustrated carrier film winding portion.

  Next, the operation from the start of peeling to the end of peeling will be explained. The web 1 coated with a thin film on the carrier film has uncoated portions at the beginning and end of the thin film. While passing through the peeling portion 21, as shown in FIG. 2, the joining operation nip roll 6 is in a state of preparing a thin film joining that is separated from the peeling roll 5.

  When the thin film 3 reaches the peeling part 21, it is adsorbed by the peeling roll 5 having the suction system and peeled off from the carrier film. At this time, the starting end of the thin film is detected by the optical non-contact displacement sensor 7 installed on the peeling roll 5. Using this signal as a trigger, the connecting nip roll 6 approaches the peeling roll 5 at an appropriate speed, nips the thin film start end and the adhesive tape 10 so that the adhesive tape 10 sticks, and simultaneously opens the thin film end pressing nip roll 9. The connecting operation is completed.

  FIG. 2 shows an example of an embodiment of a nip system as a thin film end pressing means, and the thin film end is pressed by a thin film end pressing nip roll 9. A bonding adhesive tape 10 is attached to the thin film 3. The thin film end is held by a nip roll 6 for connecting operation and held in a state of being nipped by a nip roll 9 for holding a thin film end. The thin film 3 is provided with a bonding adhesive tape 10 for connection with the next thin film starting end. In addition, as a means for sticking the connecting adhesive tape 10 to the thin film 3, it may be performed by a human hand or a known automatic tape sticking device may be used.

  FIG. 4 is a body state in which a thin film terminal is held by an adsorption system using an adhesive rubber material in a state of preparing a thin film joint. The joining nip roll 6 using the adhesive rubber material 11 holds the thin film end by a roll in which the metal core 12 is covered with a rubber material having an appropriate adhesive force. The rubber roll is obtained by vulcanizing a rubber compound containing silicon oil. For example, a production method described in JP-A-69-1445 can be used, but any rubber material having adhesiveness may be used.

  FIG. 5 shows a thin film terminal holding means using a suction system using a suction roll in a state of preparing a thin film joint, and FIG. 6 shows an example of the suction system. When suction is started by an unillustrated suction fan at the tip of the suction shaft end 20, the air is sucked through the holes of the mesh 13, passes through the suction shaft suction hole 16, and is sucked out through the suction shaft end 20. It is. Due to this action, the inside of the mesh becomes negative pressure, and as shown in FIG. 5, the thin film at the portion defined by the separator 14 and the suction shaft 14 is adsorbed by the suction roll, so that the end of the thin film is held.

  FIG. 7 shows a thin film end holding means using a nip roll in a state of preparing a thin film joint, and the thin film end is held by the thin film final end pressing nip roll 9.

  In addition, the peeling roll 5 as an adsorption system of the thin film 3 can use the roll which covered the metal core body 12 with the adhesive rubber material 11 which has suitable adhesive force similarly to the nip roll 6 for joining operation | movement. The rubber roll is obtained by vulcanizing a rubber compound containing silicon oil. For example, a manufacturing method described in JP-A-69-1445 can be used.

  A suction roll can also be used as a system for adsorbing the thin film to the peeling roll 5. The suction roll can also be used for the thin film end holding means in the previous period.

  After the joining operation, the peeling operation is continuously performed up to the end of the thin film 3. By the nip by the nip roll 4 and the suction system by the peeling roll 5, the peeling position becomes constant and stable peeling is possible.

  The end of the thin film is also detected by an optical non-contact displacement sensor 7 installed on the peeling roll 5. As soon as the end of the thin film is detected, the driving of the thin film winding unit is stopped. In addition, since the thin film 3 is adsorbed to the peeling roll 5, even if the thin film end passes through the peeling portion 21, the conveyance tension does not get out of order. After the driving of the thin film winding unit is stopped, in FIG. 2, the thin film end pressing nip roll 9 is closed, and the joining operation nip roll 6 is opened to complete the peeling. Furthermore, the adhesive tape 10 for joining is stuck on the thin film to the nip roll 6 for joining operation, whereby the preparation for joining the thin film is completed.

  FIG. 3 shows a state in which the peeling angle is increased by the peeling angle adjusting roll 8. By adjusting the peeling angle according to the adhesion between the thin film 3 and the carrier film 2, it becomes possible to perform a more stable peeling operation, removing the uncoated part where the thin film is not formed, and creating a trigger for peeling. The web can be made continuously by automating the thin film, and the length can be increased by automatically joining two or more thin films.

DESCRIPTION OF SYMBOLS 1 ... Web by which the functional thin film was coated on the carrier film 2 ... Carrier film 3 ... Thin film 4 ... Nip roll 5 ... Peeling roll 6 ... Nip roll 7 for joining operation ...・ Optical non-contact displacement sensor 8 ・ ・ ・ Rolling angle adjusting roll 9 ・ ・ ・ Thin film end pressing nip roll 10 ・ ・ Bonding adhesive tape 11 ・ ・ Adhesive rubber material 12 ・ ・ Metal core 13 ・ ・ Mesh 14 ·· Separator 15 · · Suction shaft 16 · · Suction shaft suction hole 17 · · Partition 18 · · Bearing 19 · · Rotary shaft end 20 · · Suction shaft end 21 · · Peeling part

Claims (7)

  The nip position determines the peeling position of the thin film coated on the carrier film, adjusts the peeling angle, and then creates the trigger for peeling the leading edge of the thin film and detects the beginning and end of the thin film. A film-thin film peeling and continuous thin-film joining apparatus comprising: a peeling roll adsorption system that removes an uncoated portion and continuously bonds a thin film to form a web.   The apparatus for peeling and continuous thin film and thin film according to claim 1, wherein the peeling roll adsorption system is provided by an adhesive roll.   The apparatus for peeling and continuous thin film and thin film according to claim 1, wherein the adsorption system of the peeling roll is provided by a suction roll.   The peeling system of a film and a thin film and a continuous thin film joining device according to any one of claims 1 to 3, wherein an adsorption system for holding the end of the thin film is provided by an adhesive roll.   The film-thin film peeling and continuous thin-film connecting device according to any one of claims 1 to 3, wherein an adsorption system for holding the end of the thin film is provided by a suction roll.   The means for holding the end of the thin film is provided by a nip roll, and the film-thin film peeling and continuous thin-film connecting device according to any one of claims 1 to 3.   The apparatus for detecting the presence or absence of the thin film, the apparatus for peeling and continuous thin film connection between a film and a thin film according to any one of claims 1 to 6.

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