JP2014172288A - Raw fabric film for manufacturing a laminate film, film for manufacturing a laminate film, and method for manufacturing a film for manufacturing a laminate film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raw fabric film for manufacturing a laminate film capable of inhibiting regions within a laminate film where bubbles are formed; a film for manufacturing a laminate film; and a method for manufacturing a film for manufacturing a laminate film.SOLUTION: The provided raw fabric film for manufacturing a laminate film is a raw fabric film used for manufacturing a laminate film together with another film for lamination via an interposing adhesive, wherein a double-sided tape scheduled to be adhered to a preceding film for providing a continuous film is configured on the unwinding commencing portion thereof, whereas an air removal tape spanning one edge region along the width direction of the raw stock film and the other edge region is configured at a position removed by a specified unwinding distance from the unwinding commencing portion.

Description

  The present invention relates to a raw film for producing a laminated film, a film for producing a laminated film, and a method for producing a film for producing a laminated film.

  In a general laminate film manufacturing process, an adhesive is applied on one side film, the other side film is arranged on the side of the adhesive, and the one side film and the other side film are pressed and bonded. It has come to be. In the manufacturing process of such a laminate film, the film on one side and / or the film on the other side are continuously supplied by connecting a plurality of raw film.

  For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 11-132092), the preceding original film and the next original film are bonded by connecting the preceding original film and the next original film with a double-sided tape. A method is disclosed in which the film is continuously fed.

Japanese Patent Laid-Open No. 11-132092

  The present inventor has obtained the following knowledge while earnestly researching a method of manufacturing a laminate film while connecting and continuously supplying a plurality of original fabric films.

  When the preceding original film and the next original film are bonded with a double-sided tape and connected as a film on one side, air is retained between the preceding original film and the next original film. In some cases, an adhesive may be applied on the connected film. Then, when the air held between the connected films is bonded while the film on one side and the film on the other side are pressed, the film on the one side and the film on the other side are moved along with the movement of the pressing part. Will be pushed into the adhesive between. As a result, as shown in FIG. 15, a laminated film in which bubbles are formed over a wide range is produced.

  In order to remove the air in the laminate film, it is conceivable to make a hole in the film on one side or the film on the other side. In this case, the adhesive between the film on the one side and the film on the other side is used as the hole. It adheres to the conveyance roll etc. of the manufacturing apparatus of a laminate film via.

  The present invention has been made based on such circumstances, and the purpose thereof is a laminate film capable of producing a laminate film efficiently and continuously while suppressing a region where bubbles are formed in the laminate film. It is providing the manufacturing method of the raw film for manufacture, the film for laminate film manufacture, and the film for laminate film manufacture.

  The present invention is used to produce a laminated film via an adhesive together with other films for laminating, and a double-sided tape for bonding with a preceding film to provide a continuous film is an unwinding part. The film is provided at a position of a predetermined unwinding distance from the unwinding start portion, and air extends from one edge region in the width direction of the original film to the other edge region. An original film for producing a laminate film, wherein a removal tape is provided.

  According to the present invention, the air film is provided with an air removing tape at a predetermined unwinding distance from the unwinding start portion of the original film. The air held between the original film connected with the double-sided tape as the one side film and the preceding original film (see FIG. 9), the one side film and the other side film are pressed. When being bonded together, it is pushed out between the film on one side and the film on the other side along the air removal tape (see FIG. 10), so that it is held between the connected original films. It can be suppressed that the air is pushed backward as viewed in the unwinding direction of the original film rather than the air removing tape. As a result, it can be prevented that a region where bubbles are formed in the laminate film covers a wide range. Moreover, the air pushed in between the one side film and the other side film is removed without making a hole in the one side film or the other side film. As a result, the adverse effect that the adhesive in the laminate film adheres to the conveying device or the like through the hole does not occur.

  Preferably, the air removing tape is selected such that the adhesive force between the air removing tape and the adhesive is weaker than the adhesive force between the adhesive and the original film. In this case, the air held between the connected original films can be easily pushed out from between the air removing tape and the adhesive.

  Preferably, the air removing tape is provided obliquely with respect to the length direction of the original film. In this case, the air held between the connected original films can be easily guided toward the edge region of the film by the air removing tape. More specifically, the air removing tape can be provided in an inclined linear shape (see FIG. 1). Alternatively, the air removing tape may be provided in a mountain-like shape (see FIG. 11).

  Alternatively, the present invention is a continuous film used for producing a laminated film via an adhesive together with another film for laminating, and at least a connection position of the unwinding latter half portion of the first raw film And the connection position of the next unwinding start portion of the second original film are connected by a double-sided tape, and viewed in the unwinding direction from the connection position of the unwinding start portion of the second original film. An air removing tape is provided at a predetermined rear position from one edge region to the other edge region in the width direction of the second raw film. It is a film.

  According to the present invention, the second raw film is provided with the air removing tape at a predetermined position behind the second raw film when viewed from the connecting position of the unwinding start portion of the second original film in the unwinding direction. . The air held between the first original film and the second original film connected by the double-sided tape as the one side film (see FIG. 9), the one side film and the other side film When the film is pressed and bonded, it is pushed out between the film on one side and the film on the other side along the tape for air removal (see FIG. 10), and therefore between the connected original film It is suppressed that the air held in the air is pushed backward as seen in the unwinding direction of the original film rather than the air removing tape. As a result, it can be prevented that a region where bubbles are formed in the laminate film covers a wide range. Moreover, the air pushed in between the one side film and the other side film is removed without making a hole in the one side film or the other side film. As a result, the adverse effect that the adhesive in the laminate film adheres to the conveying device or the like through the hole does not occur.

  Preferably, the air removing tape is selected such that an adhesive force between the air removing tape and the adhesive is weaker than an adhesive force between the adhesive and the second original film. In this case, the air held between the connected original films can be easily pushed out from between the air removing tape and the adhesive.

  Preferably, the air removing tape is provided obliquely with respect to the length direction of the second original film. In this case, the air held between the connected original films can be easily guided toward the edge region of the film by the air removing tape. More specifically, the air removing tape can be provided in an inclined linear shape (see FIG. 1). Alternatively, the air removing tape may be provided in a mountain-like shape (see FIG. 11).

  Or this invention is a manufacturing method of the continuous film used in order to manufacture a laminated film through an adhesive agent with the other film for lamination, Comprising: The unwinding start part of the 2nd original film A step of providing an air removing tape from one edge region to the other edge region in the width direction of the second original film at a position of a predetermined unwinding distance from the first original film; And a step of connecting the connecting position of the unwinding latter half portion of the first original film and the connecting position of the unwinding start portion of the second original film with a double-sided tape. It is the manufacturing method of the film for laminated film manufacture characterized by this.

  According to the present invention, the second raw film is provided with the air removing tape at a predetermined unwinding distance from the unwinding start portion of the second original film. The air held between the first original film and the second original film connected by the double-sided tape as the one side film (see FIG. 9), the one side film and the other side film Is pressed between the film on one side and the film on the other side along the air removing tape (see FIG. 10), and thus is held between the original film. It is suppressed that the air which was made is pushed back rather than seeing in the unwinding direction of the said original film rather than the tape for air removal. As a result, it can be prevented that a region where bubbles are formed in the laminate film covers a wide range. Moreover, the air pushed in between the one side film and the other side film is removed without making a hole in the one side film or the other side film. As a result, the adverse effect that the production efficiency of the laminate film is reduced due to the adhesive in the laminate film adhering to the conveying device or the like through the hole does not occur.

  Preferably, the air removing tape is selected such that an adhesive force between the air removing tape and the adhesive is weaker than an adhesive force between the adhesive and the second original film. In this case, the air held between the connected original films can be easily pushed out from between the air removing tape and the adhesive.

  Preferably, the air removing tape is provided obliquely with respect to the length direction of the second original film. In this case, the air held between the connected original films can be easily guided toward the edge region of the film by the air removing tape. More specifically, the air removing tape can be provided in an inclined linear shape (see FIG. 1). Alternatively, the air removing tape may be provided in a mountain-like shape (see FIG. 11).

  According to the present invention, the air film is provided with an air removing tape at a predetermined unwinding distance from the unwinding start portion of the original film. The air held between the original film connected with the double-sided tape as the one side film and the preceding original film (see FIG. 9), the one side film and the other side film are pressed. When being bonded together, it is pushed out between the film on one side and the film on the other side along the air removal tape (see FIG. 10), so that it is held between the connected original films. It can be suppressed that the air is pushed backward as viewed in the unwinding direction of the original film rather than the air removing tape. As a result, it can be prevented that a region where bubbles are formed in the laminate film covers a wide range. Moreover, the air pushed in between the one side film and the other side film is removed without making a hole in the one side film or the other side film. As a result, it is suppressed that the adhesive in the laminate film adheres to the conveying device or the like through the hole.

The schematic plan view which shows the unwinding start part of the 2nd original fabric film for laminate film manufacture provided with the tape for air removal by the 1st Embodiment of this invention. The schematic perspective view which shows the state before feeding of the 2nd original fabric film in which the tape for air removal was provided in the aspect of FIG. The figure which shows schematically the structure of the laminate film manufacturing apparatus by the 1st Embodiment of this invention. The schematic side view which shows an example of a structure of the one side film feeding apparatus. The schematic side view for demonstrating the film connection operation | movement by the one side film feeding apparatus of FIG. The figure for demonstrating the relationship between the rotation phase position of a double-sided tape (namely, rotation phase position of a 2nd feeding shaft), the space | interval of a double-sided tape and an air removal tape, and the timing of film cutting. The schematic sectional drawing which shows the continuous film connected by the film connection operation | movement by the film feeding apparatus of FIG. FIG. 8 is a schematic cross-sectional view showing the continuous film of FIG. 7 with an adhesive applied. The film on the other side is laminated on the first original film or the second original film in a state where air is held in the overlapping portion of the first original film and the second original film. The schematic sectional drawing which shows a mode. The top view which shows roughly the laminate film manufactured using the raw fabric film by which the tape for air removal was arrange | positioned in the aspect of FIG. Specifically, the portion where bubbles are formed in the laminate film is indicated by hatching. The schematic top view which shows the 2nd original film for laminate film manufacture provided with the tape for air removal by the 2nd Embodiment of this invention. The schematic perspective view which shows the state before feeding of the 2nd original fabric film in which the tape for air removal was provided in the aspect of FIG. The top view which shows schematically the laminate film manufactured using the raw fabric film by which the tape for air removal was arrange | positioned in the aspect of FIG. Specifically, the portion where bubbles are formed in the laminate film is indicated by hatching. The top view which shows roughly the original fabric film by which the tape for air removal by the comparative example of this invention is not provided. The top view which shows roughly the laminate film manufactured using the raw fabric film of FIG. Specifically, the portion where bubbles are formed in the laminate film is indicated by hatching.

  The first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing an unwinding start portion of a second raw film for producing a laminate film provided with an air removing tape according to the first embodiment of the present invention. However, FIG. 1 does not show an unwinding prevention tape 128 described later and a fixing tape 127 for fixing the unwinding prevention tape.

  The second original film 120 is used to manufacture the laminated film 610 through the adhesive 210 together with the other film 410 for laminating, and the first original original film to provide a continuous film. A double-sided tape 125 for bonding (connecting) with the film 110 is provided at the unwinding start portion. The second original film 120 has one side in the width direction of the second original film 120 at a predetermined unwinding distance from the unwinding start portion on the surface on which the double-sided tape 125 is disposed. The air removal tape 126 is provided so as to straddle the region where the adhesive 210 is applied from one edge region to the other edge region.

  In the present embodiment, the air removal tape 126 has an elongated rectangular shape as a whole, and is inclined linearly on the second original film 120 in an inclined manner with respect to the length direction of the second original film 120. It is fixed. The angle of the air removal tape 126 with respect to the width direction of the second original film may be 0 degree or more and less than 90 degrees, preferably 5 degrees or more and 45 degrees or less, more preferably 10 degrees or more and 15 degrees or less. is there.

  The air removing tape 126 is selected so that the adhesive force between the air removing tape 126 and the adhesive 210 is weaker than the adhesive force between the adhesive 210 and the second raw film 120. . Specifically, the material of the air removal tape 126 is selected so that a strong bond cannot be realized with the adhesive 210 used for laminating with the other film in the present embodiment. . In the present embodiment, the air removing tape 126 is fixed on the second original film 120 with an adhesive of a different type from the adhesive 210 used for laminating. The adhesive for fixing the air removing tape is selected so that the air removing tape 126 and the second original film 120 can be bonded to a desired degree or more.

  FIG. 2 is a schematic perspective view showing a state before feeding the second original film 120 provided with the air removal tape 126 in the embodiment of FIG. That is, the unwinding start portion of the second original fabric film 120 is unnecessarily unwound from the roll-shaped portion (second original fabric 120 ′) before being set in the laminate film manufacturing apparatus. In order to prevent this from happening, it is fixed on the outer peripheral surface of the second original fabric 120 ′ by an unwinding prevention tape 128 having a very low strength. The double-sided tape 125 and the air removal tape 126 are provided on the outer peripheral surface of the second original fabric 120 ′ to which the unwinding start portion is fixed. In the present embodiment, in order to fix the unwinding start portion of the second original fabric film 120, the unwinding prevention tape 128 is provided on the outer peripheral surface of the second original fabric 120 ′. It is arranged so as to straddle 120S. One end of the unwinding prevention tape 128 is fixed by a double-sided tape 125, and the other end is unwound from the double-sided tape 125 on the outer peripheral surface of the second original fabric 120 ′. It is fixed by a fixing tape 127 provided opposite to the start side end portion 120S.

  The dimensions of the second original fabric 120 ′ of the present embodiment are about 1 m in width and about 600 mm in diameter.

  FIG. 3 is a diagram schematically showing a configuration of the laminate film manufacturing apparatus according to the first embodiment of the present invention. The laminated film manufacturing apparatus 1 of the present embodiment includes a one-side film feeding apparatus 100 that feeds a continuous film by connecting a plurality of original films as the one-side film 101, and the one-side film 101. An adhesive application device 200 for applying the adhesive 210 to the substrate, a drying device 300 for drying the adhesive 210 applied on the film 101 on one side, and a film feeding device on the other side for feeding the film 410 on the other side. 400, a laminating apparatus 500 for laminating the film 101 on one side and the film 410 on the other side in a state where the film 410 on the other side is disposed on the adhesive 210 of the film 101 on one side, and laminating by the laminating apparatus 500 Film 101 on one side and film 410 on the other side, that is, laminate film 61 , And a winding device 600 for winding, and the.

  As shown in FIG. 4, the one-side film feeding apparatus 100 according to the present embodiment includes a first feeding shaft 111 on which the first original fabric 110 ′ of the one-side film 101 is set, and the first feeding And a nip roller 180 that sandwiches and conveys the first original film 110 fed from the first original film 110 ′ set on the shaft 111. The first feed shaft 111 is driven by a first feed shaft rotation drive unit 113, and the nip roller 180 is driven by a nip roller rotation drive unit 181. In the present embodiment, the width of the first original film 110 is the same as the width of the second original film 120 and is about 1 m.

  Further, as shown in FIG. 4, the one-side film feeding apparatus 100 includes a second feeding shaft 121 on which a new original fabric 120 ′ is set and a first feeding shaft 111 for the original film connecting operation. And a nip roller 180, a cutting portion 161 that cuts the one-side film 101 being conveyed in the width direction, and a new raw material (set on the second feeding shaft 121 between the cutting portion 161 and the nip roller 180 ( And a paster nip roller 162 for pressing the first original film 110 being conveyed against the second original film 120 ′. As described above, the double-sided tape 125 for film connection and the air removal tape 126 are attached in advance to the outer peripheral surface of the second original fabric 120 ′ set on the second feed shaft 121. The second feed shaft 121 is driven by a second feed shaft rotation drive unit 123.

  Specifically, the paster nip roller 162 is supported by a paster main body 163 fixed to an apparatus housing (not shown) via a paster nip roller moving mechanism 165. The pasta nip roller moving mechanism 165 causes the pasta nip roller 162 to simultaneously transport the first original film 110 being conveyed toward the second original film 120 ′ set on the second feeding shaft 121 in the width direction. It comes to be pressed against.

  On the other hand, the cutting part 161 is also supported by the paster body part 163 via the cutting part moving mechanism 164. The cutting part moving mechanism 164 allows the cutting part 161 to come into contact with the first raw film 110 fed from the first feeding shaft 111 all at once in the width direction. Thus, the cutting part 161 can cut the first original film 110 in the width direction at the same time.

  The first feed shaft rotation drive unit 113, the nip roller rotation drive unit 181, the second feed shaft rotation drive unit 123, the cutting unit moving mechanism 164, and the paster nip roller moving mechanism 165 are controlled in association with each other. Connected to the control unit 170 for In particular, during the film connection operation, the control unit 170 controls the second feed shaft rotation drive unit 123 to start the rotation of the second feed shaft 121, and the second feed shaft 121 has a second speed. The speed of the outermost circumference of the original fabric 120 ′ is made substantially equal to the conveying speed of the first original fabric film 110 by the first feed shaft rotation driving unit 113 and the nip roller rotation driving unit 181, and then by the paster nip roller 162. Pressing is performed. And the timing of the film cutting | disconnection by the cutting part 161 is determined according to the rotation phase position of the double-sided tape 125 for film connection, and the space | interval of the double-sided tape 125 for film connection and the tape 126 for air removal. It is like that. For this reason, the second feed shaft rotation driving unit 123 can accurately recognize the rotational phase of the double-sided tape 125 for film connection, and the control unit 170 can detect the double-sided tape 125 for film connection and the air. Information about the distance from the removal tape 126 is held.

  Further, in the film feeding apparatus 100 shown in FIG. 4, the first feeding shaft 111 and the second feeding shaft 121 have the same configuration and can be interchanged by a known turret mechanism 140. Yes.

  The turret mechanism 140 shown in FIG. 4 will be described in detail. The turret mechanism 140 includes a support column 142 that pivotally supports the rotation shaft 141 and a rotation motor 143 that rotationally drives the rotation shaft 141. The first feed shaft support arm 112 is fixed to the rotation shaft 141 on the base end side thereof, and both ends of the first feed shaft 111 are rotatably supported on the tip end side thereof. Similarly, a pair of second feed shaft support arms 122 are fixed to the rotation shaft 141 at their proximal ends, and support both ends of the second feed shaft 121 to be rotatable at their distal ends. Yes. The first feed shaft support arm 112 and the second feed shaft support arm 122 are disposed so as to face each other with the rotation shaft 141 as the center.

  Further, a pair of first support roll support arms 144 are fixed to the rotating shaft 141 on the base end side, and hold the first support roll 145 rotatably on the tip end side. Further, the pair of first support roll support arms 144 is at an angle of 90 ° on the opposite side of the rotation direction of the rotation shaft 141 with respect to the first feed shaft support arm 112. Similarly, a pair of second support roll support arms 146 are fixed to the rotation shaft 141 on the base end side, and hold the second support roll 147 rotatably on the tip end side thereof. Further, the pair of second support roll support arms 146 form an angle of 90 ° on the opposite side of the rotation direction of the rotation shaft 141 with respect to the second feed shaft support arm 122.

  A first feed shaft rotation drive unit 113 that drives the rotation of the first feed shaft 111 is provided on the tip side of the first feed shaft support arm 112, and the tip side of the second feed shaft support arm 122 is provided. In addition, a second feed shaft rotation drive unit 123 that drives the rotation of the second feed shaft 121 is provided.

  Returning to FIG. 3, the adhesive application device 200 is provided downstream of the one-side film feeding device 100 in the conveying direction of the one-side film 101, and is fed from the one-side film feeding device 100. The adhesive 210 is applied on the one side film 101 that has been removed. In the present embodiment, the adhesive application device 200 includes a container 211 for containing the adhesive 210, an application roller 220 for applying the adhesive 210 in the container 211 onto the film 101 on one side, and an application roller 220. And a feed roller 221 that feeds the film 101 on one side by rotating in synchronization with the rotation of the coating roller 220. In addition, the application roller 220 and the feed roller 221 are connected when a connecting portion (overlapping portion) between the first original film 110 and the second original film 120 passes between the application roller 220 and the feed roller 221. The adhesive 210 is disposed on the first original film 110.

  The drying device 300 is provided on the downstream side in the conveyance direction of the one-side film 101 with respect to the adhesive application device 200, and dries the adhesive 210 applied on the one-side film 101 by the adhesive application device 200. It is supposed to let you. In the present embodiment, the drying device 300 is a known drying device.

  The other-side film feeding device 400 is provided on the downstream side in the conveying direction of the one-side film 101 with respect to the drying device 300 and above the one-side film 101. On the adhesive 210 of the film 101, the film 410 on the other side having the same width as that of the film 101 on one side is fed. In the present embodiment, the other-side film feeding device 400 includes a feeding shaft 421 and a feeding-shaft rotation driving unit 423 that rotationally drives the feeding shaft 421, and the other-side film is fed. 410 can be fed in accordance with the conveying speed of the film 110 on one side. In addition, as a structure of the other side film feeding apparatus 400, like the one side film feeding apparatus 100, a plurality of films may be connected and a continuous film may be supplied. In this case, the other side film 410 may be provided with a double-sided tape for film connection and an air removal tape, like the second raw film 120.

  The laminating apparatus 500 is provided on the downstream side in the conveying direction of the film 101 on the one side with respect to the film feeding apparatus 400 on the other side, and can adhere the film 101 on the one side and the film 410 on the other side. It is like that. The laminating apparatus 500 has a pair of laminating rollers 510 in the present embodiment, and the pair of laminating rollers 510 is disposed on the film 101 on one side and the adhesive 210 of the film 101 on the one side. The film 410 on the other side is pressed against each other while being heated. The pair of laminating rollers 510 are rotated by a rotation drive shaft (not shown) so that the speed of the outer peripheral surface thereof coincides with the conveying speed of the film 101 on one side and the film 410 on the other side.

  The winding device 600 is provided downstream of the laminating device 500 in the conveying direction of the one-side film 101 and the other-side film 410, and the one-side film 101 and the other-side film adhered by the laminating device 500. The film 410 (laminate film 610) can be wound up. In the present embodiment, the winding device 600 includes a winding shaft 621 and a winding shaft rotation driving unit 623 that rotationally drives the winding shaft 621, and a laminate film on the winding shaft 621. The outermost peripheral speed of 610 is rotated in accordance with the transport speed of the film 101 on one side and the film 410 on the other side.

  Next, the operation of the present embodiment configured as described above will be described.

  First, an original fabric similar to that of a conventional product is prepared, and a double-sided tape 125 for film connection is attached to the unwinding start portion of the original fabric film, and the release paper is removed. And the unwinding prevention tape 128 (it is not adhesive) is arrange | positioned so that the unwinding start side edge part 120S may be straddled on the outer peripheral surface of the said original fabric, ie, one end of the said unwinding prevention tape 128 The part is bonded onto the double-sided tape 125. Further, a fixing tape 127 for fixing the unwinding prevention tape is provided at a position on the outer peripheral surface of the original fabric and facing the double-sided tape 125 with the unwinding start side end 120S interposed therebetween. 127, the other end of the unwinding prevention tape 128 is fixed on the outer peripheral surface of the original fabric.

  Next, an air removing tape 126 is provided on such a raw material. Specifically, the air removal tape 126 is placed on the outer peripheral surface of the original fabric at a predetermined unwinding distance from the unwinding start portion of the original fabric film. The film 120 is provided so as to straddle the region where the adhesive 210 is applied from one edge region in the width direction to the other edge region. In the present embodiment, the air removing tape 126 is fixed in an inclined linear shape obliquely with respect to the length direction of the original film 120. The original fabric provided with the air removal tape 126 is set on the second feeding shaft 121 of the one-side film feeding apparatus 100 as a second original fabric 120 ′.

  In the one-side film feeding apparatus 100, as shown in FIG. 4, the first feeding shaft rotation driving unit 113 and the nip roller rotation driving unit 181 rotate the first feeding shaft 111 set on the first feeding shaft 111. The first original film 110 is fed from the original fabric 110 ′ and conveyed while being nipped by the nip roller 180 via the first support roll 145.

  When the remaining amount of the first original film 110 in the first original fabric 110 ′ is reduced and the film connecting operation is performed, first, the second feeding shaft rotation driving unit 123 is controlled by the control unit 170. Thus, the rotation of the second feeding shaft 121 is started. Then, the speed of the second raw film 120 on the outermost periphery of the second feed shaft 121 is gradually increased, and the first original fabric by the first feed shaft rotation driving unit 113 and the nip roller rotation driving unit 181 is increased. It is made to correspond to the conveyance speed of the film 110.

  Next, the paster nip roller moving mechanism 165 is driven under the control of the control unit 170, and the first raw film 110 being conveyed is second fed by the paster nip roller 162 as shown in FIG. The second original fabric 120 ′ set on the shaft 121 is pressed all at once in the width direction. Thus, the first original film 110 is bonded to the double-sided tape 125 for film connection provided on the second original film 120 ′. Further, according to the control of the control unit 170, the cutting unit moving mechanism 164 depends on the rotational phase position of the double-sided tape 125 for film connection and the interval between the double-sided tape 125 for film connection and the air removal tape 126. When driven, the cutting unit 161 cuts the first original film 110 being conveyed all at once in the width direction.

  Here, cutting is performed according to the rotational phase position of the film-connecting double-sided tape 125 and the distance between the film-connecting double-sided tape 125 and the air removing tape 126. The original film 110 is cut rearward with respect to the bonding position with the double-sided tape 125 on the second original film 120 ′ in the conveying direction of the first original film 110, and the second It means that the first original film 110 bonded to the original film 120 is cut so as not to completely cover the air removing tape 126 on the second original film 120. Yes.

  That is, as shown in FIG.1 and FIG.6, between the adhesion location with the double-sided tape 125, and the 1st original film film rear end part 110E produced by the 1st original film 110 being conveyed being cut | disconnected. The distance A is the distance between the double-sided tape 125 on the second original film 120 and the rear end 126E of the air removing tape 126 as viewed in the unwinding direction of the second original film 120. When the distance is B, the rotational phase position of the double-sided tape 125 (that is, the rotational phase position of the second feeding shaft 121), the double-sided tape 125 for film connection, and air so that the distance A <distance B is satisfied. The distance from the removal tape 126 and the film cutting timing (that is, when the cutting section moving mechanism 164 starts operating) are controlled in association with each other.

  In the present embodiment, as shown in FIG. 7, the first original film 110 is cut so that the first original film 110 and the air removing tape 126 do not overlap.

  When the film is connected, the unwinding start portion of the second original film 120 is pulled by the first original film 110 being transported adhered to the unwinding start portion by the double-sided tape 125. Thereby, the unwinding prevention tape 128 which has fixed the said unwinding start part is cut | disconnected, and the fixed state of the unwinding start part of the 2nd original fabric film 120 is released. Then, the second original film 120 is fed from the new second original film 120 ′ set on the second feeding shaft 121. Then, the cutting unit 161 is returned to the original position by the cutting unit moving mechanism 164, and the paster nip roller 162 is also returned to the original position by the paster nip roller moving mechanism 165.

  Thereafter, the position of the first feed shaft 111 and the position of the second feed shaft 121 are interchanged by the turret mechanism 140. Specifically, the first feed shaft support arm 112, the second feed shaft support arm 122, the first support roll support arm 144, and the second support roll support arm 146 are driven by the rotation motor 143. However, the position of the 1st feed shaft 111 and the position of the 2nd feed shaft 121 are changed mutually.

  The first original film 110 or the second original film 120 fed from the one-side film feeding device 100 as the one-side film 101 is sandwiched by the nip roller 180 and conveyed to the adhesive application device 200. . Then, the film 101 on one side is passed between the application roller 220 and the feed roller 221 of the adhesive application device 200. As a result, the adhesive 210 is applied onto the film 101 on one side. As shown in FIG. 8, the adhesive 210 is applied on the first film 110 at a portion where the first original film 110 and the second original film 120 are connected by the double-sided tape 125 and overlapped, The first film 110 is continuously applied onto the second original film 120 via the first original film rear end portion 110E. The adhesive 210 is also applied on the air removing tape 126.

  The film 101 on one side to which the adhesive 210 is applied is then conveyed to the drying device 300. The adhesive 210 on the film 101 on one side is dried to a desired level by the action of the drying device 300. The film 101 on one side that has passed through the drying device 300 is conveyed to a lower region of the other film feeding device 400.

  In the lower region of the other-side film feeding device 400, the other-side film 410 fed from the other-side film feeding device 400 is disposed on the adhesive 210 of the one-side film 101. Specifically, the original film of the other side film 410 set on the feeding shaft 421 of the other side film feeding device 400 is transferred to the outermost periphery of the other side film 410 by the feeding shaft rotation driving unit 423. The film 101 is rotated so as to coincide with the transport speed of the film 101. Thereby, the film 410 on the other side is unwound toward the lower region of the other film feeding device 400. Then, the unrolled film 410 on the other side is disposed on the adhesive 210 of the one-side film 101 that passes through the lower region of the other-side film feeding device 400.

  Thereafter, the film 101 on one side and the film 410 on the other side are conveyed to a laminating apparatus 500 and passed between a pair of laminating rollers 510 to be laminated. Specifically, since at least one of the pair of laminating rollers 510 is heated, the adhesive 210 on the film 101 on one side is softened when approaching the pair of laminating rollers 510. Then, the film 101 on the one side and the film 410 on the other side are pressed against each other by the pair of laminating rollers 510, so that the film 410 on the other side is bonded onto the softened adhesive 210. Thereby, the laminate film 610 is manufactured.

  Here, referring to FIG. 9 and FIG. 10, when the first original film 110 and the second original film 120 are connected by the double-sided tape 125 and the air is held in the overlapping portion, explain. FIG. 9 shows the first original film 110 and the second original film 120 on the first original film 110 and the second original film 120 in a state where air is held in the overlapping portion of the first original film 110 and the second original film 120. It is a schematic sectional drawing which shows a mode that the film 410 of the other side is laminated. FIG. 10 is a plan view schematically showing a laminate film 610 manufactured by using the second raw film 120 on which the air removing tape 126 is arranged in the embodiment of FIG. The portion where the bubble 800 is formed is indicated by hatching.

  When the first original film 110 and the second original film 120 are connected by the double-sided tape 125 and air is held in the overlapping part, the overlapping part is laminated. As shown in FIG. 9, the film 101 on one side and the film 410 on the other side are moved as the film 101 on the one side and the film 410 on the other side are transported and the pressing location by the pair of laminating rollers 510 is moved. It is pushed backward as seen in the transport direction. Since the adhesive 210 between the film 101 on the one side and the film 410 on the other side is softened when approaching the pair of laminating rollers 510, the adhesive 210 is between the first original film 110 and the second original film 120. The air held in the air is pushed into the softened adhesive 210 to form bubbles 800. When the air pushed into the adhesive 210 is pushed to the position where the air removing tape 126 is disposed, the air removing tape 126 and the adhesive 210 are not firmly bonded, and thus FIG. As shown in FIG. 2, the air is guided between the second raw film 120 as the film 101 on one side and the film 410 on the other side along the air removal tape 126 to the side regions of the films 120 and 410. Extruded from between the films 120 and 410.

  The laminated film 610 laminated in the laminating apparatus 500 is transported to the winding apparatus 600, wound on the winding shaft 621, and rolled. At this time, the take-up shaft 621 causes the outermost speed of the laminate film 610 on the take-up shaft 621 to coincide with the transport speed of the one-side film 101 and the other-side film 410 by the take-up shaft rotation drive unit 623. So that it is rotated.

  According to the present embodiment, the air removing tape 126 is placed on the second original film 120 at a predetermined position behind the connecting position of the unwinding start portion of the second original film 120 in the unwinding direction. Is provided. The air held between the first original film 110 and the second original film 120 connected by the double-sided tape 125 as the one-side film 101 (see FIG. 9) When the film 410 on the other side is pressed and bonded, it is pushed out from between the film 101 on one side and the film 410 on the other side along the air removal tape 126 (see FIG. 10). ), It is suppressed that the air held between the connected original films 110 and 120 is pushed backward as seen in the unwinding direction of the second original film 120 rather than the air removal tape 126. . As a result, it can be prevented that the region where the bubbles 800 are formed in the laminate film 610 covers a wide range. Further, the air pushed between the film 101 on one side and the film 410 on the other side is removed without making a hole in the film 101 on the one side or the film 410 on the other side. As a result, the adverse effect that the adhesive 210 in the laminate film 610 adheres to the conveying device or the like through the hole does not occur.

  The air removing tape 126 is selected so that the adhesive force between the air removing tape 126 and the adhesive 210 is weaker than the adhesive force between the adhesive 210 and the second raw film 120. . In this case, the air held between the connected original films 110 and 120 can be easily pushed out from between the air removing tape 126 and the adhesive 210.

  Further, the air removal tape 126 is provided obliquely with respect to the length direction of the second original fabric film 120, more specifically, in an inclined linear shape as shown in FIG. In this case, the air held between the connected original films 110 and 120 can be easily guided toward the edge region of the films 120 and 410 by the air removing tape 126.

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

  FIG. 11 is a schematic plan view showing a second raw film for producing a laminate film provided with an air removing tape according to the second embodiment of the present invention. However, FIG. 11 does not show the unwinding prevention tape 128 and the fixing tape 127 for fixing the unwinding prevention tape. FIG. 12 is a schematic perspective view showing a state before feeding of the second raw film provided with the air removing tape in the embodiment of FIG.

  The present embodiment is different in that the air removal tape 126a is provided in a mountain-like shape as shown in FIG. 11 on the second raw film 120a, and the other configuration is shown in FIG. This is substantially the same as the first embodiment. In the embodiment shown in FIGS. 11 and 12, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The air removing tape 126a of the present embodiment includes two unit tapes having a generally elongated rectangular shape and substantially the same length. As shown in FIGS. 11 and 12, one unit tape of the air removing tape 126a is provided from one edge region in the width direction of the second raw film 120a to the central region, The unit tape is provided from the other edge region in the width direction of the second original film 120a to the central region. Also, one unit tape and the other unit tape are provided so as to be closer to the unwinding start end portion 120aS of the second original film 120a as they are closer to the central region, The end portions are provided so as to overlap each other. Since the two unit tapes are arranged in this manner, the air removing tape 120a has a mountain-like shape as a whole.

  In the present embodiment, the angle of each unit tape of the air removing tape 126 with respect to the width direction of the second original film may be 0 degree or more and less than 90 degree, preferably 5 degree or more and 45 degree. Degrees or less, more preferably 10 degrees or more and 15 degrees or less.

  Next, the operation of the present embodiment configured as described above will be described with reference to FIG. FIG. 13 is a plan view schematically showing a laminate film 610a manufactured using the second raw film 120a on which the air removing tape 126a is arranged in the embodiment of FIG. 11, and there are bubbles in the laminate film 610a. A portion where 800a is formed is indicated by hatching.

  When the first original film 110 and the second original film 120 are connected by the double-sided tape 125 and air is held in the overlapping part, the overlapping part is laminated. As the pressing location by the pair of laminating rollers 510 is moved, it is pushed into the softened adhesive 210 between the film 101 on one side and the film 410 on the other side to form bubbles 800a. When the air pushed into the adhesive 210 is pushed to the position where the air removing tape 126a is disposed, as shown in FIG. 13, the air is removed along the air removing tape 126a provided in a mountain shape. The film is guided to the edge region of the film 101 on one side and the film 410 on the other side, and is pushed out from between the film 101 on the one side and the film 410 on the other side.

  Also according to the present embodiment, the air held between the connected original films 110 and 120a can be easily guided toward the edge regions of the films 120a and 410 by the air removing tape 126a.

  Next, actual examples and comparative examples will be described.

<Example 1>
As the original fabric of the first original fabric 110 ′, the second original fabric 120 ′ and the other side film 410, an original fabric similar to the conventional product was prepared. The original fabric had a diameter of about 600 mm. The thickness of the original film was 20 μm, and the width was 1 m. A double-sided tape having a thickness of 50 μm, a length of 30 mm, and a width of 900 mm was attached to the unwinding start portion of the original film used as the second original film 120 ′.

  Next, a tape having a length of 30 mm and a width of 990 mm was prepared as the air removal tape 126. As the material of the air removing tape 126, a material that does not firmly bond to the adhesive 210 used for laminating the film 101 on one side and the film 410 on the other side was selected. And, on the outer peripheral surface of the original fabric used as the second original fabric 120 ′, the air removal tape 126 is inclined linearly at a position of a predetermined unwinding distance from the unwinding start portion, and It provided so that the area | region where the adhesive agent 210 was applied may be straddle | crossed from one edge part area | region of the width direction of the 2nd original film 120 to the other edge part area | region (refer FIG. 2). The angle of the air removal tape 126 with respect to the width direction of the second original film 120 was 15 degrees. Further, the distance B between the double-sided tape 125 on the second original film 120 and the rear end 126E of the air removing tape 126 in the unwinding direction of the second original film 120 is: It was 580 mm.

  Next, the first original fabric 110 ′ and the second original fabric 120 ′ are set in the one-side film feeding device 100 of the laminate manufacturing apparatus 1, and the first original fabric 110 ′ to the first original fabric film 110 are set. Was fed as a film 101 on one side.

  When the remaining amount of the film of the first original fabric 110 ′ has decreased, the film connecting operation is performed. Specifically, the first original film 110 being conveyed is bonded to the double-sided tape 125 on the second original film 120 ′, and the first original film 110 is bonded to the double-sided tape 125 from the bonding position. It was cut backwards as seen in the transport direction. A distance A between the portion of the first original film 110 adhered to the double-sided tape 125 and the first original film rear end portion 110E was 300 mm.

  The one-side film 101 fed from the one-side feeding device 100 was conveyed to the adhesive application device 200. Then, an adhesive 210 was applied on the film 101 on one side. The thickness of the adhesive 210 applied to the film 101 on one side was 30 μm.

  The film 101 on one side to which the adhesive 210 was applied was conveyed to the drying device 300. The adhesive 210 on the film 101 on one side was dried to a desired level by the action of the drying device 300.

  The film 101 on one side that passed through the drying apparatus 300 was conveyed to a lower region of the other film feeding apparatus 400, and the film 410 on the other side was disposed on the adhesive 210.

  Thereafter, the film 101 on one side and the film 410 on the other side were conveyed to the laminating apparatus 500 and pressed in a state where the adhesive 210 between the films 101 and 410 was softened. Thereby, the film 410 on the other side was adhered to the adhesive 210 on the film 101 on the one side, and the laminate film 610 was manufactured.

  Then, the laminate film 610 was conveyed to the winding device 600 and wound up by the winding shaft 621 into a roll shape.

  When the quality of the laminate film 610 thus manufactured was evaluated, bubbles 800 were formed in the region between the first original film rear end portion 110E and the air removal tape 126. This is because the first original film 110 and the second original film 120 are connected by the double-sided tape 125, and the overlapping part is laminated in a state where air is held in the overlapping part. it is conceivable that. However, as shown in FIG. 10, no bubbles were formed behind the air removal tape 126 as viewed in the winding direction of the laminate film 610. That is, the length of the region where the bubbles 800 are formed between the second raw film 120 and the other film 410 is distance B−distance A = 280 mm.

<Example 2>
With respect to Example 1, as shown in FIGS. 11 and 12, the air removal tape 126a was arranged in a mountain fold shape, and the other processes were the same, and the laminate film 610 was manufactured. Also in this example, the angle of each unit tape of the air removing tape 126a with respect to the width direction of the second original film 120a was 15 degrees. Further, the distance B between the double-sided tape 125 on the second original fabric film 120a and the rear end portion 126aE in the unwinding direction of the second original fabric film 120a of the air removing tape 126a is: It was 580 mm.

  When the quality of the laminated film 610a manufactured in this way was evaluated, bubbles 800a were formed in the region between the first original film rear end portion 110E and the air removing tape 126a. This is because the overlapping of the first original film 110 and the second original film 120a is performed by the double-sided tape 125 and the overlapping part is laminated in a state where air is held in the overlapping part. it is conceivable that. However, as shown in FIG. 13, no bubbles were formed behind the air removal tape 126a when viewed in the winding direction of the laminate film 610a. That is, the length of the region where the bubbles 800a are formed between the second original film 120a and the film 410 on the other side was distance B−distance A = 280 m.

<Comparative Example 1>
A laminate film 1610 was manufactured in the same process as in Example 1 except that no air removing tape was provided on the second raw film 1120.

  When the quality of the laminated film 1610 produced in this way was evaluated, bubbles 1800 were formed behind the first original film rear end portion 110E when viewed in the winding direction of the laminated film 1610. This is because the overlap of the first original film 110 and the second original film 1120 is performed by the double-sided tape 125 and the overlapped part is laminated in a state where air is held in the overlapped part. it is conceivable that. The length of the region where the bubbles 1800 are formed between the second raw film 1120 and the other film 410 was about 20 m. This is because the air held in the portion where the first original film 110 and the second original film 1120 overlap is removed from between the second original film 1120 and the film 410 on the other side. This is probably because laminating continued without any problems.

DESCRIPTION OF SYMBOLS 1 Laminate film manufacturing apparatus 100 One side film feeding apparatus 101 One side film 110 1st original fabric film 110 '1st original fabric 110E 1st original fabric film rear end part 111 1st feeding shaft 112 1st feeding Feed shaft support arm 113 First feed shaft rotation drive unit 120, 120a, 1120 Second original film 120 ', 120a' Second original fabric 120S, 120aS, 1120S Unwinding start side end 121 Second feed Shaft 122 Second feed shaft support arm 123 Second feed shaft rotation drive unit 125 Double-sided tape 126, 126a Air removal tape 127 Fixed tape 128 Unwinding prevention tape 140 Turret mechanism 141 Rotating shaft 142 Column 143 Rotating motor 144 First support roll support arm 145 First support roll 146 Second support roll support arm 147 Second support roll 161 Cutting unit 162 Pasta nip roller 163 Paster main body 164 Cutting unit moving mechanism 165 Pasta nip roller moving mechanism 170 Control unit 180 Nip roller 181 Nip roller rotation driving unit 200 Adhesive application device 210 Adhesive 211 Container 220 Application roller 221 Feed roller 300 Drying device 400 Other side film feeding device 410 Other side film 421 Feed shaft 423 Feed shaft rotation drive unit 500 Laminating device 510 Laminating roller 600 Winding devices 610, 610a, 1610 Laminating film 621 Winding shaft 623 Winding shaft rotation drive unit 800, 800a, 1180

Claims (15)

Used together with other films for laminating to produce a laminating film via an adhesive, double-sided tape is provided at the unwinding part to adhere to the preceding film to provide a continuous film The original fabric film
An air removing tape is provided at a position of a predetermined unwinding distance from the unwinding start portion and extending from one edge region to the other edge region in the width direction of the original film. Raw film for making laminate film. The air removal tape is selected such that an adhesive force between the air removal tape and the adhesive is weaker than an adhesive force between the adhesive and the original film. 1. A raw film for producing a laminate film according to 1. The said film for air removal is provided diagonally with respect to the length direction of the said original film, The original film for laminated film manufacture of Claim 1 or 2 characterized by the above-mentioned. The said film for air removal is provided in the inclined linear form, The raw film for laminated film manufacture of Claim 3 characterized by the above-mentioned. The said film for air removal is provided in the shape of a mountain fold, The raw film for laminated film manufacture of Claim 3 characterized by the above-mentioned. A continuous film used to produce a laminate film via an adhesive together with other films for laminating,
At least the connection position of the unwinding latter half part of the first original film and the connection position of the unwinding start part of the next second original film are connected by a double-sided tape,
From one edge region in the width direction of the second original film to the other edge, at a predetermined position behind the connection position of the unwinding start portion of the second original film in the unwinding direction. A film for producing a laminate film, wherein a tape for air removal is provided over a region. The air removing tape is selected such that an adhesive force between the air removing tape and the adhesive is weaker than an adhesive force between the adhesive and the second original film. The film for manufacturing a laminate film according to claim 6. The film for manufacturing a laminate film according to claim 6 or 7, wherein the air removing tape is provided obliquely with respect to a length direction of the second original film. The film for manufacturing a laminate film according to claim 8, wherein the air removing tape is provided in an inclined linear shape. The film for manufacturing a laminate film according to claim 8, wherein the air removing tape is provided in a mountain fold shape. A continuous film production method used to produce a laminate film via an adhesive together with other films for laminating,
A tape for air removal from one edge area to the other edge area in the width direction of the second original film at a position of a predetermined unwinding distance from the unwinding start portion of the second original film. Providing a step;
Unwinding the first raw film,
Connecting the connection position of the unwinding latter half portion of the first original fabric film and the connection position of the unwinding start portion of the second original fabric film with a double-sided tape;
A method for producing a film for producing a laminated film, comprising: The air removing tape is selected such that an adhesive force between the air removing tape and the adhesive is weaker than an adhesive force between the adhesive and the second original film. The manufacturing method of the film for laminated film manufacture of Claim 11. The method for producing a film for producing a laminate film according to claim 11 or 12, wherein the air removing tape is provided obliquely with respect to a length direction of the second original fabric film. 14. The method for producing a film for producing a laminate film according to claim 13, wherein the air removing tape is provided in an inclined linear shape. The method for producing a film for producing a laminate film according to claim 13, wherein the air removing tape is provided in a mountain fold shape.

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