JP2021080078A - Detection method, production method, detection device, production device, web roll manufacturing method, web roll manufacturing device, control program and recording medium - Google Patents

Abstract

To provide a detection method for detecting inter-layer pressure of a web roll without requiring web surface treatment for detecting the inter-layer pressure of the web such as ink coating for the web by solving the problem that deterioration of quality of the web in a use stage occurs since the web roll becomes a bamboo-shoot-shape and relaxes and a cavity is generated in the web roll caused by increasing of the amount of winding looseness of the web roll.SOLUTION: There is provided a detection method in which a plurality of webs of a prescribed shape are laminated to form a layer of the web, the layer is pressed from a prescribed direction by a prescribed force to detect hardness of a cross section of the layer, and a relation between the prescribed force and the hardness is obtained to calculate the force from the hardness.SELECTED DRAWING: Figure 3

Description

The present invention relates to a detection method.

Conventionally, it has been known that a rolled web-like object (hereinafter sometimes referred to as a web roll) is wound by the tension applied to the web. For this reason, due to the increase in the amount of tightness of the web roll, the web roll becomes like a bamboo shoot and rolls up, or a nest is formed on the web roll, resulting in deterioration of the quality of the web at the stage of use. Was. In addition, as the amount of unwinding increases, cutting of the web also occurs. As a result, in the case of a production device having a web roll as a component, the production device has been forced to stop.

In response to the above problems, recent research has shown that the interlayer pressure applied to the web is an important factor in the tightening of web rolls, and in order to control the tightening and eventually the warping collapse, the interlayer pressure should be adjusted appropriately. We know that it is important to measure and manage. As a conventional method for determining the interlayer pressure of a web roll, the method described in Patent Document 1 below is known.

In the method described in Patent Document 1, an ink mark is applied to the cross-sectional side of the paper by an ink coating device at each predetermined winding rotation of the roll paper during winding of the roll paper, and the ink mark is applied from the cross-sectional side of the reel paper. The mark position is measured by the detection device. Then, the winding hardness of the roll paper can be measured by obtaining the density between the layers of the same mark from the measured value.

Japanese Unexamined Patent Publication No. 2000-219368

However, in the method described in Patent Document 1, since it is necessary to apply the ink mark to the cross section of the web when the web is wound, there is a possibility that the web may be deteriorated due to the ink mark.

In view of the above problems, it is an object of the present invention to provide a detection method capable of detecting the interlayer pressure of a web roll without requiring a web surface treatment for detecting the interlayer pressure such as ink coating on the web.

In order to solve the above problems, in the present invention, a plurality of webs having a predetermined shape are stacked to form a layer of the webs, and the webs are pressed from a predetermined direction with a predetermined force to detect the hardness of the cross section of the layers. , The relationship between the predetermined force and the hardness is obtained, and the force is calculated from the hardness.

According to the present invention, the interlayer pressure of a web roll can be detected without requiring a web surface treatment for detecting the interlayer pressure such as ink coating on the web.

It is a schematic diagram of the production apparatus 100 in an embodiment. It is a figure for demonstrating the method of detecting the interlayer pressure of the web roll 8 in embodiment. It is a graph which shows the relationship between the interlayer pressure and hardness. It is the schematic which shows the web roll cross-sectional hardness measuring system 60 in embodiment. It is the schematic of the web roll manufacturing apparatus 400 in embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The embodiments shown below are merely examples, and the detailed configuration can be appropriately changed without departing from the spirit of the present invention. Further, the numerical values taken up in the present embodiment are reference numerical values and do not limit the present invention.

(First Embodiment)
FIG. 1 is a schematic view of the production apparatus 100 according to the present embodiment. From FIG. 1, the web roll 8 is a roll of the double-sided adhesive tape 7 in which the double-sided adhesive tape 7 in which the separator and the adhesive portion are integrated is wound in a roll shape on the paper tube 1. The rotating shaft 3 is a rotating shaft that fixes and rotates the paper tube 1. The rotating shaft 3 is rotatably attached to the base plate 10.

Further, a driving means (not shown) such as a brushless motor and a means (not shown) for transmitting and blocking the rotational force thereof (such as a hysteresis clutch) are attached to the side opposite to the rotating shaft 3. Further, the double-sided adhesive tape 7 is guided by a plurality of rollers 6 with free guides.

Next, the tension measuring part and the double-sided adhesive tape cutting part will be described. The tension measuring means 12 is provided in the routing path of the double-sided adhesive tape 7, and the tension measuring means 12 is provided with a roller 6 with a free guide. Further, a tape suction means 13 is provided between the rollers 6 with a free guide in the above path, and the structure is such that the separator side of the double-sided adhesive tape 7 is sucked. Further, the double-sided adhesive tape cutting means 14 for making a cut in the double-sided adhesive tape 7 from the direction facing the separator is provided.

The double-sided adhesive tape cutting means 14 is provided with an adjustment mechanism (not shown) capable of making a cut to the thickness of a separator capable of maintaining strength that is not cut by the tension applied to the double-sided adhesive tape 7. The double-sided adhesive tape cutting means 14 creates a strip-shaped adhesive portion piece in a state of being separately attached to the double-sided adhesive tape 7.

Next, the positioning unit will be described. The positioning portion is located at a place where the notch 40 is provided in the base plate 10. This is for repeatedly positioning and fixing the sticking surface 35 welded to the sticking material 34 in order to stick the double-sided adhesive tape piece to the sticking material 34 with high accuracy. The material to be attached 34 has a plurality of high-precision holes (not shown), which are held by a plurality of positioning pins 32. The positioning pin 32 is made of a hard metal, for example, a material obtained by quenching stainless steel, and has a taper at the tip toward the material to be attached 34. The positioning pin 32 is fixed to the first positioning plate 30 and the second positioning plate 31 without moving. Further, the first positioning plate 30 and the second positioning plate 31 have a structure in which the material to be attached 34 is sandwiched and raised by a plurality of driving means (not shown), for example, a plurality of single-axis robots.

A spring pushing means 33 is attached to the first positioning plate 30, and the structure is such that when the material 34 to be attached is sandwiched, the spring pushing means 33 is pushed toward the second positioning plate 31 side. The second positioning plate 31 is provided with a positioning pin (not shown), and the position of the material to be attached 34 pushed by the spring pushing means 33 is repeatedly positioned at the same position.

The adhesive piece (not shown) created by the double-sided adhesive tape cutting portion 14 is held by the separator and guided to the sticking portion described below. The sticking portion is attached to the base plate 10 so that the driving means 50 that drives in the direction of the arrow P is parallel to the sticking surface 35, and the carriage that is linearly driven by the driving means 50 is attached to the sticking frame 51. There is. A compression coil spring 55 is attached to the sticking frame 51 by a spring post 54 and a spring post fixing block 53.

A repulsive force adjusting means (not shown) for adjusting the repulsive force of the compression coil spring 55 is attached to the spring post 54 and the spring post fixing block 53. The linear guide 57 is attached in the direction perpendicular to the sticking surface 35, and the carriage of the linear guide (not shown) is fixed to the first sticking guide 56. The first sticking guide 56 is pushed downward by the repulsive force of the compression coil spring 55, but is stopped with a constant repulsive force by the stopper at the time of non-figure. Further, the first sticking guide 56 fixes the free roller 59 in the direction perpendicular to the sticking surface 35 by a shaft (not shown). Not only that, the first sticking guide 56 fixes the second sticking guide 58 so as not to move more than a certain amount in the width direction of the double-sided adhesive tape 7.

With the above sticking portion, the free roller 59 pressurizes the adhesive portion piece (not shown) from the separator of the double-sided adhesive tape 7, and sticks the adhesive portion piece to the sticking surface 35. Further, a roller 52 with a free guide is attached to the sticking frame 51 to the sticking portion. This is for guiding the double-sided adhesive tape 7 which is only a separator after the adhesive portion piece (not shown) is attached to the attachment surface 35 by the free roller 59 and delivering it to the conveying portion.

If an adhesive piece (not shown) is not normally attached by the free roller 59, a double-sided adhesive tape piece (not shown) is wrapped around the roller 52 with a free guide so that a sensor (not shown) can detect it. There is. The roller 52 with a free guide is integrated with a shaft (not shown) and has a structure that can freely rotate with respect to the shaft (not shown). The tip of the shaft (not shown) is threaded, and the tip on the opposite side is knurled. With this structure, the operator can manually grasp and rotate the knurled portion to remove and clean the shaft and the roller 52 with a free guide (not shown) from the sticking frame 51 without tools.

Next, the transport unit will be described. The transport portion includes a moving portion integrated with the sticking frame 51 and a fixed portion integrated with the base plate 10.

A first separator gripping means 60 is attached to the moving portion. The first separator gripping means 60 is sandwiched and driven by an air cylinder (not shown), and grips the separator by a pair of facing pressing blocks. Further, a driving means for driving the first separator gripping means 60 in the direction of arrow P is also provided, and the tension of the double-sided adhesive tape 7 is controlled by operating the first separator gripping means 60 in the direction of arrow P. Also, this pressing block uses a hard metal, for example, a material obtained by quenching stainless steel. Then, one of the separator gripping surfaces is subjected to a process of increasing friction, for example, a knurled process of iris, and the other is subjected to a non-adhesive treatment, for example, a tosical treatment.

Then, the surface subjected to this non-adhesive treatment is installed so as to be on the side where the adhesive portion is present in the double-sided adhesive tape 7. The second separator gripping means 61 is also attached to the fixed portion, and the structure is the same as that of the first separator gripping means 60. The second separator gripping means 61 is attached to the base plate 70 and integrated with the base plate 10. The positional relationship between the first separator gripping means 60 and the second separator gripping means 61 is as follows.

When the second separator gripping means 61 grips the separator of the double-sided adhesive tape 7, the first separator gripping means 60 is a cylinder (not shown) in which a pair of pressing blocks face each other with a certain distance. ..

Next, the separator cutting portion will be described. The separator cutting portion is attached to the fixing portion of the above-mentioned transport portion, and the cutter 71 is attached to a driving means in a linear direction (not shown). Then, the cutter 71 also moves in the front-rear direction by driving the driving means in the linear direction (not shown). At this time, the blade of the cutter 71 is attached so as to be able to cut the entire width direction of the double-sided adhesive tape 7, and the separator piece 75 is created.

Next, the suction transfer section will be described. The suction transfer section sucks the separator piece 75 created by the separator cutting section by sending compressor air (not shown) to the air suction machine 72. Then, the sucked separator piece 75 is sucked into the hose 73 attached to the air suction machine 72 without a gap, and finally stored in the separator container 74. The hose 73 is mainly made of a material that is resistant to charging, for example, a polyvinyl chloride resin, and has a bellows shape so that it can be easily routed.

Further, the separator container 74 has a box-shaped frame made of a lightweight and strong resin, for example, a polypropylene resin having a hollow structure, and a mesh-like sheet (not shown) is attached to the frame. The mesh-like sheet (not shown) uses a lightweight and strong resin such as high-density polyethylene, and has a mesh hole structure narrower than the length in the width direction of the separator. With this structure, even if a large amount of the separator piece 75 is sucked in, the suction force of the aspirator 72 does not decrease until the separator container 74 is filled with the separator piece 75. Further, since the separator container 74 is lightweight, it does not burden the operator when disposing of the separator piece 75.

Further, the production apparatus 100 is provided with a hardness measuring apparatus 11 for measuring the hardness of the side surface of the web roll 8. Using this hardness measuring device 11, the interlayer pressure of the web roll 8 is detected by the method described later. By controlling the tension of the double-sided adhesive tape 7 routed to the production apparatus 100 by using the interlayer pressure, it is possible to reduce the unwinding when the double-sided adhesive tape 7 is pulled out from the web roll 8.

Further, the production device 100 is provided with a control device 200 that acquires information from each sensor mechanism and controls each drive mechanism. The control device 200 controls operations such as tension control, cutting, sticking, and suction of the double-sided adhesive tape 7.

Next, a method of detecting the interlayer pressure of the web roll 8 will be described in detail. FIG. 2 is a diagram for explaining a method of detecting the interlayer pressure of the web roll 8 in the present embodiment. FIG. 2A is a state diagram when the web roll 8 for which the interlayer pressure is to be measured is removed from the production apparatus 100. FIG. 2B is a diagram in which a plurality of double-sided adhesive tapes 7 cut out from the web roll 8 having the same shape are laminated. FIG. 2C is a schematic view of the hardness-interlayer pressure characteristic measuring machine 300.

From FIG. 2A, the double-sided adhesive tape 7 has a two-layer structure of a separator 7b and an adhesive portion 7a, which is not shown in FIG. The operator prepares a web roll 8 containing an adhesive component in the same lot and storage conditions as the web roll 8 for which the interlayer pressure is to be measured. However, the web roll of the same lot refers to the one that is wound and manufactured from the same raw fabric in the same temperature and humidity environment at the same time. The storage conditions also mean that the history of changes in temperature and humidity to which the web roll is exposed is the same. The width L of the double-sided adhesive tape 7 is 2.2 mm.

Then, from FIG. 2B, two or more double-sided adhesive tapes 7 having the same shape and having a length R of 60 mm are cut out from the web roll 8 for which the interlayer pressure is to be measured. The same operation is repeated, and the cut out double-sided adhesive tape 7 is laminated so that two or more sheets are not misaligned to prepare the double-sided adhesive tape layer 4. Further, in the double-sided adhesive tape layer 4, the surface viewed from the direction of arrow A is the back surface, and the surface viewed from the direction of arrow B is the side surface. Also, when stacking, stack so that pressure is not applied from the back surface direction and the side surface direction.

Next, from FIG. 2C, the hardness-interlayer pressure characteristic measuring machine 300 includes a receiving plate 2, a pressurizing means 20, and a hardness measuring device 11. The receiving plate 2 is made of SUS400, which is a rolled steel material for general structure. When measuring the hardness of the double-sided adhesive tape layer 4, which will be described later, the pressure is applied by the pressurizing means 20 from the direction of arrow A'and the strength is not deformed by the load applied from the hardness measuring device 11 from the direction of arrow B'. ing. The receiving plate 2a that exerts a vertical effect in the arrow C direction when the double-sided adhesive tape layer 4 is pressurized and the receiving plate 2b that emits a vertical effect in the arrow D direction when measuring hardness may be independent. Further, the double-sided adhesive tape layer 4 is installed so that the back surface and the receiving plate 2a are substantially parallel to each other and the side surfaces are substantially parallel to the receiving plate 2b.

The pressurizing means 20 includes, for example, an air cylinder. Further, in order to variably adjust the pressure applied to the double-sided adhesive tape layer 4, the air cylinder is provided with a regulator (not shown) and a pneumatic display unit.

The hardness measuring device 11 includes an indenter 31, an elastic body 32, and an elastic body contraction amount display unit 33. The indenter 31 is made of diamond, protrudes from the bottom of the hardness measuring device 11, and is in contact with the double-sided adhesive tape layer 4. When the indenter 31 of the hardness measuring device 11 is pressed against the side surface of the double-sided adhesive tape layer 4, a force is generated in the direction of arrow B'due to the contraction of the elastic body 32, and the indenter 31 is the side surface of the double-sided adhesive tape layer 4. To transform. The double-sided adhesive tape layer 4 repels the deformation. The indenter 31 stops when the force due to the elastic body 32 and the repulsive force are in equilibrium. Then, the shrinkage amount of the elastic body 32 is displayed on the elastic body shrinkage amount display unit 33.

The contact portion of the indenter 31 with the double-sided adhesive tape 4 has an area capable of pressurizing two or more double-sided adhesive tapes 7. As a result, when the indenter 31 is pressed against the double-sided adhesive tape layer 4, the indenter 31 is prevented from being sandwiched between the double-sided adhesive tapes 7, and the double-sided adhesive tape layer 4 can be deformed while maintaining the layered shape. As described above, the repulsive force can be generated in the double-sided adhesive tape layer 4, so that the hardness of the double-sided adhesive tape layer 4 can be measured. As a result, a linearity is obtained between the hardness of the cross section of the double-sided adhesive tape layer 4 and the interlayer pressure, and the accuracy of estimating the interlayer pressure at the hardness measurement position of an arbitrary cross section on the web roll is improved. Hereinafter, a method for obtaining the relationship between hardness and interlayer pressure will be described.

From FIG. 2C, first, an air cylinder (not shown) provided in the pressurizing means 20 is operated to press the double-sided adhesive tape layer 4 in the direction of arrow A'. By adjusting the amount of air while looking at the air pressure display (not shown), the air pressure applied to the air cylinder is adjusted, and the thrust of the air cylinder is adjusted. The air pressure-thrust characteristics of the cylinder are obtained in advance. The interlayer pressure of the double-sided adhesive tape layer 4 at this time can be calculated by the following formula assuming that the pressure is uniformly applied to the back surface of the double-sided adhesive tape 7.
P = F / S

In common sense, P is the interlayer pressure, F is the thrust by the pressurizing means 20, and S is the cross-sectional area of the double-sided adhesive tape layer 4 on the back side (2.2 [mm] × 60 [mm] = 132 [mm] in this embodiment. ² ]).

Next, with the thrust applied to the double-sided adhesive tape layer 4 by the pressurizing means 20 as described above, the hardness of the double-sided adhesive tape layer 4 on the cross-sectional side is measured by the hardness measuring device 11. Then, the calculated interlayer pressure of the double-sided adhesive tape layer 4 and the measured hardness of the double-sided adhesive tape layer 4 on the cross-sectional side are recorded. As described above, the hardness of the double-sided adhesive tape layer 4 on the cross-sectional side at an arbitrary interlayer pressure can be obtained.

Then, the magnitude of the thrust applied by the pressurizing means 20 is changed, and the hardness of the double-sided adhesive tape layer 4 on the cross-sectional side is measured in the same manner. The above operation is repeated a plurality of times to increase the total number of measurements of the hardness of the double-sided adhesive tape layer 4 on the cross-sectional side at an arbitrary interlayer pressure of the double-sided adhesive tape layer 4 to two or more.

Next, a graph of hardness-interlayer pressure characteristics is created from the measured values of the hardness on the cross-sectional side of the double-sided adhesive tape layer 4 at an arbitrary interlayer pressure of the double-sided adhesive tape layer 4. When the interlayer pressure of the double-sided adhesive tape layer 4 is P [Pa] and the hardness of the cross section of the double-sided adhesive tape layer 4 is H [HV], and the relationship between the two is a linear function, the relationship between P and H is as follows. Represented. a and b are approximately obtained by the method of least squares, a is obtained by the number 1 and b is obtained by the number 2.
H = aP + b

FIG. 3 is a graph showing the measurement result and the relationship between the interlayer pressure and the hardness obtained by the above mathematical formula. The vertical axis is the hardness H, and the horizontal axis is the interlayer pressure P. In this embodiment, N1 to N5 were measured a total of 5 times. By using the graph of FIG. 3, the interlayer pressure at an arbitrary hardness can be calculated. Further, in the present embodiment, the approximation is performed by a linear function, but the approximation may be performed by a function corresponding to the required accuracy, such as a function such as a quadratic function or a cubic function. Then, the relationship shown in the graph of FIG. 3 is stored in the control device 200.

FIG. 4 is a schematic view showing a web roll cross-sectional hardness measuring system 60 used when measuring the hardness of the web roll 8 on the cross-sectional side. The web roll receiving plate 61 is made of SUS400, which is a rolled steel material for general structure, like the receiving plate 2 used when creating a graph of interlayer pressure and hardness in the double-sided adhesive tape layer 4. The surface roughness is the same as that of the receiving plate 2, and the tape web roll 8 for which the interlayer pressure is to be measured has a size on which the tape web roll 8 can be placed without protruding. Further, a hardness measuring device 11 for measuring the hardness of the cross section of the web roll 8 is attached to the web roll receiving plate 61 by the mounting portion 62.

The web roll cross-sectional hardness measuring system 60 shown in FIG. 4 is installed in the production apparatus 100 of FIG. Then, the web roll 8 whose interlayer pressure is to be measured is placed on the web roll receiving plate 61, and the double-sided adhesive tape 7 is routed around each part of the production apparatus 100.

Then, the control device 200 reads the hardness information from the hardness measuring device 11, and calculates the interlayer pressure of the web roll 8 using the graph shown in FIG. Then, the tension measuring means 12 and the second separator gripping means 62 are controlled so as to keep the interlayer pressure at a predetermined value. As described above, the interlayer pressure of the web roll 8 can be appropriately controlled in the work of attaching the double-sided adhesive tape 7, and the risk of the web roll 8 being unwound in the production of the article can be reduced.

As described above, according to the present embodiment, it is possible to detect the interlayer pressure of the web roll without requiring the web surface treatment for detecting the interlayer pressure such as ink coating on the double-sided adhesive tape 7 to be the web.

(Second embodiment)
In the first embodiment described above, the present invention is applied to, but is not limited to, a production apparatus for attaching the double-sided adhesive tape 7 to be a web. For example, the present invention can be applied to a web roll manufacturing apparatus that manufactures the web roll 8 itself. It will be described in detail below.

In the following, a portion of the hardware and control system configuration different from that of the first embodiment will be illustrated and described. Further, it is assumed that the same configuration and operation as described above are possible for the same parts as those in the first embodiment, and detailed description thereof will be omitted.

FIG. 5 is a schematic view of a web roll manufacturing apparatus 400 for manufacturing the web roll 80 according to the present embodiment. In this embodiment, a film roll is manufactured as a web roll 80. As shown in FIG. 5, the web roll manufacturing apparatus 400 of the present embodiment includes a film manufacturing line 401, a narling apparatus 402, and a winding apparatus 403. Although not shown, the film production line 401 has equipment such as a casting device and a tenter, and produces a film by a known method.

The knurling device 402 is arranged between the film production line 401 and the winding device 403. The knurling device 402 includes a support roller 406, a knurling roller 407, and shift portions 408 and 409. When knurling is applied, the support rollers 406 and the knurling rollers 407 are moved to the nip positions by the shift portions 408 and 409, and knurling (not shown) is formed on both side edges (ears) of the polymer film 405 by embossing.

The winding device 403 has a turret arm 411 and winds the polymer film 405 on a winding core 413 set on the winding shaft 412. The turret arm 411 is intermittently rotated by, for example, 180 degrees by an arm drive unit (not shown), and the winding core 313 is selectively switched between the winding position PS1 and the winding core replacement position PS2. A guide arm 415 is provided at an intermediate position in the rotation direction of the turret arm 411, and a guide roller 416 is attached to the tip of the guide arm 415. The guide roller 416 supports the polymer film 405 so that the polymer film 405 does not come into contact with the turret arm 411 or the arm mounting shaft 417 when the turret arm 411 is rotating.

The take-up shaft 412 is provided at the tip of the turret arm 411. A winding core 413 is set on the winding shaft 412. At the winding position PS1, the polymer film 405 sent from the guide roller 418 is wound around the winding core 413. Further, at the winding core replacement position PS2, the web roll 80 that has been fully wound by winding the polymer film 405 of a certain length is removed from the winding shaft 412 together with the winding core 413. Then, a new empty winding core 413 is set on the winding shaft 412, and the winding core 413 is replaced.

When the film roll 80 is close to full winding at the winding position PS1, the turret arm 411 rotates 180 degrees to position the film roll 80 close to full winding at the winding core replacement position PS2. Further, an empty winding core 413 is positioned at the winding position PS1. When the web roll 80 reaches a predetermined length, the film cutting device 404 is activated to cut the polymer film 405. As the film cutting device 404, for example, the web rewinding device described in JP-A-2005-89177, JP-A-2008-230723, and the like is used.

The rear end of the cut leading polymer film 405 is wound around the web roll 80 at the core replacement position PS2. Further, the tip of the cut trailing polymer film 405 is wound around an empty winding core 413 at the winding position PS1.

Hereinafter, in the same manner, the polymer film 405 is wound around the winding core 413, so that the polymer film 405 continuously sent becomes a product as the web roll 80. In the next step, the web roll 80 thus obtained is used as a polarizing plate protective film or a retardation film, for example, when the polymer film 405 is rewound and cut into a required size to form a sheet. Further, the polymer film 405 is provided with an optically anisotropic layer, an antireflection layer, an antiglare function layer and the like, if necessary, and is used as a high-performance film.

The web roll cross-sectional hardness measuring system 60 is installed on the turret arm 411 of the web roll manufacturing apparatus 400 described above. Two web roll cross-sectional hardness measuring systems 60 are provided to produce the web roll 80 at the winding position PS1 and the winding position PS2. Further, a graph of the hardness and interlayer pressure of the cross section of the web roll 80 obtained in advance by the method described in the first embodiment is stored in the control device of the web roll manufacturing apparatus 400 (not shown).

Then, the control device reads the hardness information of the web roll 80 from the hardness measuring device 11, and calculates the interlayer pressure of the web roll 80 using the graph. Then, the take-up speed of the take-up shaft 312 is controlled so as to keep the interlayer pressure at a predetermined value. As described above, in the winding of the polymer film 405, the interlayer pressure of the produced web roll 80 can be appropriately controlled, the risk of the web roll 80 being unwound is reduced, and the quality of the web roll 80 is improved. be able to.

The processing procedures of the various embodiments described above have been described specifically as being executed by the control device. However, a software control program capable of executing the above-mentioned functions and a recording medium on which the program is recorded may be mounted on another device.

Therefore, a software control program capable of executing the above-mentioned functions, a recording medium on which the program is recorded, and a communication device constitute the present invention.

Further, in the above embodiment, the case where the computer-readable recording medium is ROM or RAM and the control program is stored in the ROM or RAM has been described, but the present invention is not limited to such a mode. Absent.

The control program for carrying out the present invention may be recorded on any recording medium as long as it is a computer-readable recording medium. For example, as a recording medium for supplying a control program, an HDD, an external storage device, a recording disk, or the like may be used.

The present invention is not limited to the above-described embodiment, and many modifications can be made within the technical idea of the present invention. Moreover, the effects described in the embodiments of the present invention merely list the most preferable effects arising from the present invention, and the effects according to the present invention are not limited to those described in the embodiments of the present invention.

2 Receiving plate 4 Double-sided adhesive tape layer 7 Double-sided adhesive tape 7a Adhesive part 7b Separator 8, 80 Web roll 11 Hardness measuring device 20 Pressurizing means 100 Production device 200 Control device

Claims (12)

A plurality of webs having a predetermined shape are stacked to form a layer of the webs.
Pressing with a predetermined force from a predetermined direction, the hardness of the cross section of the layer is detected, and the hardness is detected.
Find the relationship between the predetermined force and the hardness,
The force is calculated from the hardness.
A detection method characterized by that. In the detection method according to claim 1,
The predetermined direction is the direction in which the webs are overlapped.
A detection method characterized by that. In the detection method according to claim 1 or 2,
Pressing with the predetermined force from the predetermined direction a plurality of times, and detecting the hardness of the cross section of the layer each time the pressing is performed.
A detection method characterized by that. In the detection method according to claim 3,
The predetermined force is changed and pressed.
A detection method characterized by that. In the detection method according to claim 3 or 4,
The relationship between the predetermined force and the hardness is obtained by approximation from the plurality of the predetermined forces and the hardness corresponding to the force.
A detection method characterized by that. The interlayer pressure of the web roll is calculated based on the relationship between the predetermined force and the hardness obtained by using the detection method according to any one of claims 1 to 5.
The tension of the web roll is controlled based on the interlayer pressure.
The web roll is used to produce goods.
A production method characterized by that. A plurality of webs having a predetermined shape are stacked to form a layer of the webs.
Pressing with a predetermined force from a predetermined direction, the hardness of the cross section of the layer is detected, and the hardness is detected.
Find the relationship between the predetermined force and the hardness,
The force is calculated from the hardness.
A detection device characterized by that. The interlayer pressure of the web roll is calculated based on the relationship between the predetermined force and the hardness obtained by using the detection method according to any one of claims 1 to 5.
The tension of the web roll is controlled based on the interlayer pressure.
The web roll is used to produce goods.
A production device characterized by that. The interlayer pressure of the web roll is calculated based on the relationship between the predetermined force and the hardness obtained by using the detection method according to any one of claims 1 to 5.
The winding speed of the web roll is controlled based on the interlayer pressure.
A web roll manufacturing method characterized by that. The interlayer pressure of the web roll is calculated based on the relationship between the predetermined force and the hardness obtained by using the detection method according to any one of claims 1 to 5.
The winding speed of the web roll is controlled based on the interlayer pressure.
A web roll manufacturing device characterized by that. A control program capable of executing the production method according to claim 6 or the web roll manufacturing method according to claim 9. A computer-readable recording medium on which the control program according to claim 11 is recorded.

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