JP2019020288A - Method for inspecting agent-containing sheet-like object and method for producing agent-containing sheet-like object - Google Patents

Abstract

To stably determine a transfer state of a liquid agent to a sheet-like object, and efficiently and continuously inspect the agent-containing sheet-like object.SOLUTION: A method for inspecting an agent-containing sheet-like object 1 transfers a transparent agent 3 carried on an outer peripheral surface of a transfer roll 101 onto an uneven sheet 2. A first sensor 104 which acquires first information on the outer peripheral surface of the transfer roll 101 before the carried transparent agent 3 is transferred onto the uneven sheet 2, and a second sensor 105 which acquires second information on the outer peripheral surface of the transfer roll 101 after the transparent agent 3 is transferred to the uneven sheet 2 are used. A transfer state of the transparent agent 3 to the uneven sheet 2 is determined by comparing the first information on the outer peripheral surface of the transfer roll 101 acquired by the first sensor 104 with the second information on the outer peripheral surface of the transfer roll 101 acquired by the second sensor 105 at the same position of the outer peripheral surface as the acquired first information.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for inspecting an agent-containing sheet and a method for producing the agent-containing sheet.

  Generally, when a transparent agent that is difficult to detect in the visible light region is transferred to a sheet material such as a sheet material or a film, it is difficult to inspect the presence or absence of the transparent agent transferred to the sheet material. . In particular, if the surface (transfer surface) of the sheet-like material before transferring the transparent agent is uneven, it becomes more difficult to inspect the presence or absence of the transparent agent transferred to the surface of the sheet-like material. In addition, for example, when inspecting the presence or absence of the transparent agent from the reflected light by irradiating the sheet-like material with light rays other than visible light such as infrared rays and ultraviolet rays, the detection sensitivity of the reflected light is improved if the transfer amount of the transparent agent is very small. It does not rise and cannot perform a stable inspection. If a stable inspection such as the presence or absence of the transparent agent transferred to the sheet-like material cannot be performed, the sheet-like material to which the transparent agent is transferred cannot be efficiently produced.

  As a method of inspecting the transferred material transferred to the sheet-like material, the remaining image of the transfer sheet after the transfer material is transferred to the sheet-like material is imaged, and the transfer state to the sheet-like material based on the captured remaining image An inspection method for judging the above is disclosed (see Patent Document 1).

  Further, Patent Document 2 discloses an inspection method for imaging a state of a printing plate or the like on which a transfer material before being transferred to a sheet-like material is applied, and determining a transfer state to the sheet-like material based on the imaged plate surface image or the like. Is disclosed.

JP2015-55555A JP 2009-160816 A

  However, since the inspection method described in Patent Document 1 is a method in which only the remaining image of the transfer sheet after transfer is imaged and inspected, the state of the transfer sheet before transfer (for example, an appropriate transfer sheet) It is difficult to make a stable determination as to whether or not appropriate transfer has been performed. Moreover, since the inspection method described in Patent Document 2 is an inspection method for imaging and determining only the state of a printing plate or the like before being transferred to a sheet-like object, it is determined whether or not appropriate transfer to the sheet-like object has been performed. It is difficult to perform stably.

  Therefore, the subject of this invention is providing the inspection method of the agent-containing sheet-like material which can eliminate the fault which the prior art mentioned above has, and the manufacturing method of an agent-containing sheet-like material.

  The present invention is a method for producing an agent-containing sheet-like material, wherein the liquid agent carried on the outer peripheral surface of the transfer roll is transferred to a sheet-like material, wherein the carried liquid agent is transferred to the sheet-like material. Using a first sensor that acquires first information about the outer peripheral surface of the transfer roll, and a second sensor that acquires second information about the outer peripheral surface of the transfer roll after the liquid agent is transferred to the sheet-like material, The first information of the outer peripheral surface of the transfer roll acquired by the first sensor and the outer peripheral surface of the transfer roll acquired by the second sensor at the same position of the outer peripheral surface as the acquired first information. The present invention provides an inspection method for an agent-containing sheet-like material, which compares the second information with the second information to determine a transfer state of the liquid agent onto the sheet-like material.

  Further, the present invention is a method for producing an agent-containing sheet-like material, the transfer step of transferring the liquid agent carried on the outer peripheral surface of the transfer roll to the sheet-like material, and the carried liquid agent on the sheet A first sensor for acquiring first information relating to the outer peripheral surface of the transfer roll before transfer to the sheet-like material, and second information relating to the outer peripheral surface of the transfer roll after transferring the liquid agent to the sheet-like material. Using the second sensor, the second sensor has acquired the first information of the outer peripheral surface of the transfer roll acquired by the first sensor and the same position of the outer peripheral surface as the acquired first information. A determination step of comparing the second information on the outer peripheral surface of the transfer roll to determine the transfer state of the liquid material onto the sheet-like material, and adjusting transfer conditions based on the determination result of the determination step Adjustment And a degree, there is provided a method for producing agent-containing sheet.

According to the method for inspecting an agent-containing sheet-like material of the present invention, the transfer state of the liquid onto the sheet-like material can be determined stably, and the agent-containing sheet-like material can be inspected efficiently and continuously. .
Moreover, according to the method for producing the agent-containing sheet-like material of the present invention, the transfer state of the liquid agent to the sheet-like material can be determined stably, and the agent-containing sheet-like material is produced efficiently and continuously. Can do.

FIG. 1 is a schematic view showing a production apparatus used in a method for producing an agent-containing sheet material to which an inspection method for an agent-containing sheet material, which is a preferred embodiment of the present invention, is applied. FIG. 2 is a graph showing the relationship between the clearance between the transfer roll and the receiving roll and the light quantity conversion value (vertical axis) obtained by converting the reflected light quantity acquired by the first sensor and the second sensor into a voltage. FIG. 3 is a graph showing the relationship between the clearance between the transfer roll and the receiving roll and the light amount conversion difference value between the first light amount conversion value and the second light amount conversion value. FIG. 4 is a graph showing the relationship between the ratio of the liquid agent to the weight of the concavo-convex sheet and the light amount conversion difference value.

  Hereinafter, the inspection method of the present invention relates to inspecting the transfer state of the liquid agent onto the sheet-like material. The manufacturing method of the agent-containing sheet-like material to which the inspection method of the present invention is applied is a concavo-convex sheet 2 (hereinafter referred to as “agent-containing sheet” as a sheet-like material to which the transparent agent 3 as a liquid agent which is a preferred embodiment is transferred. An example of a manufacturing method of “form 1”) will be described with reference to the drawings. The agent-containing sheet 1 can be manufactured using, for example, the manufacturing apparatus 100 shown in FIG.

  The manufacturing method of the agent-containing sheet-like material 1 using the manufacturing apparatus 100 transfers the transparent agent 3 as a liquid agent carried on the outer peripheral surface of the transfer roll 101 to the concavo-convex sheet 2 as a sheet-like material and transfers the agent-containing sheet. This is a method of manufacturing the product 1. Specifically, after applying the transparent agent 3 to the outer peripheral surface of the smooth transfer roll 101, the transparent agent 3 applied to the outer peripheral surface of the transfer roll 101 is transferred to the concavo-convex sheet 2 to form the agent-containing sheet This is a method for manufacturing the product 1.

  The agent-containing sheet 1 to be produced may be formed using a sheet-like material having a flat transfer surface 2u to be transferred. In this embodiment, the uneven sheet having an uneven shape formed on the transfer surface 2u. 2 is used.

  The uneven sheet 2 is not particularly limited as long as it is a sheet-like material, and may be, for example, a fiber sheet containing fibers as a constituent material or a film. Examples of the concavo-convex sheet made of a fiber sheet include JP 2002-187228 A, JP 2003-250836 A, JP 2004-166849 A, JP 2004-202890 A, and JP 2009-153734 A. Can be used.

  In the present embodiment, the transparent agent 3 is used as the liquid agent. When transferring a transparent agent that is difficult to detect in the visible light region to a sheet-like material, it is difficult to detect the transparent agent transferred to the sheet-like material, especially when transferring it onto an uneven sheet. Is more difficult, it is preferable to use the production method of the present invention. The type of the transparent agent 3 is not particularly limited as long as it is a transparent agent, and may be colorless and transparent as well as colored and transparent. Here, “transparent” means that when the transparent agent 3 is visually observed from one side, an object located on the other side opposite to the one side can be visually recognized. In addition, “visible” means that it is not only possible to confirm the shadow of an object formed when light is applied from the other side toward the object located on the other side of the transparent agent, from one side of the transparent agent, This means that the object itself can be confirmed from the one side.

  The transfer amount of the clearing agent 3 is an amount capable of detecting the clearing agent 3 transferred to the agent-containing sheet-like material 1 in the method for producing the agent-containing sheet-like material 1 using the manufacturing apparatus 100. If it is the quantity by which the function as 3 is expressed, it will not restrict | limit.

  The viscosity of the liquid agent (transparent agent 3) transferred to the concavo-convex sheet 2 is preferably 1 mPa · s or more, more preferably 10 mPa · s or more, and more preferably 10,000 mPa from the viewpoint of efficiently transferring the transparent agent 3 to the concavo-convex sheet 2. · S or less is preferable, and 8000 mPa · s or less is more preferable. Specifically, it is preferably 1 mPa · s or more and 10,000 mPa · s or less, and more preferably 10 mPa · s or more and 8000 mPa · s or less. The viscosity of the clearing agent 3 can be measured at 20 ° C. and measured using a digital viscometer (viscometer TVB-10M (manufactured by Toki Sangyo Co., Ltd.)), rotor N0.3, rotation speed: 30 rpm).

  In the method for manufacturing the agent-containing sheet 1 using the manufacturing apparatus 100, as shown in FIG. 1, information on the outer peripheral surface of the transfer roll 101 before the carried transparent agent 3 is transferred to the concavo-convex sheet 2 is acquired. The 1st sensor 104 and the 2nd sensor 105 which acquires the information regarding the outer peripheral surface of the transfer roll 101 after transferring the transparent agent 3 to the uneven | corrugated sheet 2 are used. And the 1st information regarding the outer peripheral surface with which the transparent agent 3 of the transfer roll 101 acquired by the 1st sensor 104 was carry | supported, and the transparent sensor which the 2nd sensor 105 acquired in the position of the same outer peripheral surface as this acquired 1st information. The second information relating to the outer peripheral surface of the transfer roll 101 after the transfer of the agent 3 is compared, and the outer peripheral surface of the transfer roll 101 is inspected to determine the transfer state of the transparent agent 3 to the uneven sheet 2.

  FIG. 1 shows an overall configuration of a manufacturing apparatus 100 used in the method for manufacturing the agent-containing sheet 1. Hereinafter, the manufacturing method of the agent-containing sheet-like material 1 using the manufacturing apparatus 100 will be described in detail.

  As shown in FIG. 1, the manufacturing apparatus 100 includes a transfer roll 101, a receiving roll 102, a supply tank 103, a first sensor 104, a second sensor 105, and a determination unit 106.

  As shown in FIG. 1, the transfer roll 101 has a smooth outer peripheral surface. In addition, the outer peripheral surface of the transfer roll 101 is formed of an elastic material in the manufacturing apparatus 100 and can be elastically deformed. In the manufacturing apparatus 100, the transfer roll 101 is connected to a drive source (not shown) and is formed to be rotatable in the direction of the arrow R1 shown in FIG. 1 by the drive source.

  In the manufacturing apparatus 100, the receiving roll 102 is disposed opposite to the transfer roll 101 below the transfer roll 101, as shown in FIG. The receiving roll 102 is formed so that the clearance between the receiving roll 102 and the transfer roll 101 can be changed so that the nip pressure to the concavo-convex sheet 2 sandwiched between the transfer roll 101 can be changed. In the manufacturing apparatus 100, the receiving roll 102 is formed to be rotatable in the R2 direction shown in FIG. The manufacturing apparatus 100 is the closest position between the receiving roll 102 and the transfer roll 101, and transfers the transparent agent 3 to the uneven sheet 2 when the uneven sheet 2 passes between the receiving roll 102 and the transfer roll 101. It has a transfer part N1 which is a part.

  In the manufacturing apparatus 100, the supply tank 103 is positioned above the transfer roll 101 and is disposed opposite to the outer peripheral surface of the transfer roll 101 as shown in FIG. 1. In the manufacturing apparatus 100, the supply tank 103 has a supply nozzle (not shown) that supplies the transparent agent 3 to the outer peripheral surface of the transfer roll 101.

  In the manufacturing apparatus 100, as shown in FIG. 1, the first sensor 104 includes a supply unit N2 that is a part that receives the supply of the transparent agent 3 from the supply tank 103 in the transfer roll 101, and a transfer unit N1 in the transfer roll 101. In the meantime, the transparent agent 3 is supplied from the supply tank 103, and is disposed opposite to the outer peripheral surface of the transfer roll 101 before the transparent agent 3 is transferred to the uneven sheet 2. That is, the first sensor 104 is disposed opposite to the outer peripheral surface of the transfer roll 101 in the region downstream of the supply unit N2 and upstream of the transfer unit N1 in the rotation direction of the transfer roll 101 (R1 direction shown in FIG. 1). Thus, it is possible to acquire information (first information) about the outer peripheral surface of the transfer roll 101 on which the transparent agent 3 is carried, that is, before the transparent agent 3 is transferred to the uneven sheet 2.

  For example, in the manufacturing apparatus 100, the first sensor 104 is an optical sensor that acquires a reflected light amount of light irradiated toward the outer peripheral surface of the transfer roll 101 as the first information regarding the outer peripheral surface of the transfer roll 101. In the manufacturing apparatus 100, the first sensor 104 has a light emitting unit (not shown) that emits light toward the outer peripheral surface of the transfer roll 101. The light emitting section is arranged in a direction in which the incident angle of light with respect to the outer peripheral surface of the transfer roll 101 is 87 degrees or more from the viewpoint of maximizing the amount of reflected light irradiated toward the outer peripheral surface of the transfer roll 101. More preferably, it is arranged in a direction of 89 degrees or more, preferably in a direction of 93 degrees or less, more preferably in a direction of 91 degrees or less, and 87 It is preferably arranged in a direction that is not less than 93 degrees and not more than 93 degrees, and more preferably in a direction that is in the range of 89 degrees to 91 degrees. In the first sensor 104 of the manufacturing apparatus 100, the light emitting unit (not shown) is arranged in a direction in which the incident angle of light with respect to the outer peripheral surface of the transfer roll 101 is 90 degrees (vertical). In the manufacturing apparatus 100, the first sensor 104 emits the first reflected light that is irradiated by the light emitting unit (not shown) of the first sensor 104 and reflected by the outer peripheral surface of the transfer roll 101 supplied with the transparent agent 3. It has a light receiving part (not shown) for receiving light.

  In the manufacturing apparatus 100, as shown in FIG. 1, the second sensor 105 transfers the transparent agent 3 to the concavo-convex sheet 2 between the supply unit N <b> 2 in the transfer roll 101 and the transfer unit N <b> 1 in the transfer roll 101. It is disposed opposite to the outer peripheral surface of the subsequent transfer roll 101. That is, the second sensor 105 is disposed opposite to the outer peripheral surface of the transfer roll 101 in the region downstream of the transfer unit N1 and upstream of the supply unit N2 in the rotation direction of the transfer roll 101 (R1 direction shown in FIG. 1). Thus, information (second information) about the outer peripheral surface of the transfer roll 101 after the transparent agent 3 is transferred at the transfer portion N1 can be acquired.

  For example, in the manufacturing apparatus 100, the second sensor 105 is an optical sensor that acquires a reflected light amount of light irradiated toward the outer peripheral surface of the transfer roll 101 as the second information related to the outer peripheral surface of the transfer roll 101. In the manufacturing apparatus 100, the second sensor 105 has a light emitting unit (not shown) that emits light toward the outer peripheral surface of the transfer roll 101. The light emitting unit (not shown) of the second sensor 105 irradiates light at a position corresponding to the position where the light emitting unit (not shown) of the first sensor 104 irradiates the outer peripheral surface of the transfer roll 101. It has become. The light emitting unit (not shown) of the second sensor 105 has a first incident angle of light with respect to the outer peripheral surface of the transfer roll 101 from the viewpoint of maximizing the amount of light reflected toward the outer peripheral surface of the transfer roll 101. It is preferably the same as the light emitting unit (not shown) of the sensor 104, and specifically, it is preferably arranged in a direction of 87 degrees or more, and more preferably in a direction of 89 degrees or more. Preferably, the orientation is preferably 93 degrees or less, more preferably 91 degrees or less, and more preferably 87 degrees or more and 93 degrees or less. More preferably, the orientation is 89 degrees or more and 91 degrees or less. In the second sensor 105 of the manufacturing apparatus 100, the light emitting portion (not shown) of the second sensor 105 is arranged in a direction in which the incident angle of light with respect to the outer peripheral surface of the transfer roll 101 is 90 degrees (vertical). . Further, in the manufacturing apparatus 100, the second sensor 105 receives the second reflected light that is irradiated by the light emitting unit (not shown) and reflected by the outer peripheral surface of the transfer roll 101 after the transparent agent 3 is transferred to the uneven sheet 2. A light receiving portion (not shown).

  As shown in FIG. 1, the determination unit 106 is electrically connected to the first sensor 104 and the second sensor 105 by wire or wireless. In the manufacturing apparatus 100, the determination unit 106 has the same first reflected light amount as the first information about the outer peripheral surface on which the transparent agent 3 of the transfer roll 101 acquired by the first sensor 104 is carried, and the acquired first information. The second reflected light amount as the second information regarding the outer peripheral surface of the transfer roll 101 acquired by the second sensor 105 at the position of the outer peripheral surface is compared, and the transfer state of the transparent agent 3 to the uneven sheet 2 is determined. It has become.

  In the manufacturing apparatus 100, the determination unit 106 uses the difference value between the first reflected light amount acquired by the first sensor 104 and the second reflected light amount acquired by the second sensor 105, and the transparent agent 3 on the uneven sheet 2. The transfer state is judged. For example, the determination unit 106 takes in a pulse signal output from an encoder attached to the transfer roll 101 in order to obtain the phase timing, and obtains the phase at each position of the first sensor 104 and the second sensor 105. Then, the output value (first reflected light amount) from the position of the first sensor 104 and the output value (second reflected light amount) from the position of the second sensor 105 are synchronized so as to be information at the same outer peripheral surface position. The collected first collected light amount and second reflected light amount are subjected to a difference calculation to determine the transfer state of the transparent agent 3 onto the uneven sheet 2 (determination step).

  In the manufacturing method using the manufacturing apparatus 100, first, a drive source (not shown) that rotates the transfer roll 101 is driven. When a drive source (not shown) is driven, the transfer roll 101 rotates in the direction of arrow R1 shown in FIG. 1 as shown in FIG. When the transfer roll 101 rotates in the direction of arrow R1, the receiving roll 102 rotates in the direction of arrow R2 shown in FIG. 1 following the rotation of the transfer roll 101.

  As shown in FIG. 1, the outer peripheral surface of the transfer roll 101 that supplies the transparent agent 3 stored in the supply tank 103 via a supply nozzle (not shown) and rotates in the direction of arrow R1 in the supply unit N2. Apply the clearing agent 3 to the surface.

  Separately, as shown in FIG. 1, the concavo-convex sheet 2 is continuously conveyed in the conveyance direction X, and the concavo-convex sheet 2 is supplied to the transfer portion N <b> 1 that is the closest contact point between the transfer roll 101 and the receiving roll 102. .

  And the transfer process which transfers the transparent agent 3 as a liquid agent carry | supported by the outer peripheral surface of the transfer roll 101 to the uneven | corrugated sheet | seat 2 as a sheet-like material is performed. In the transfer step, when the transparent agent 3 carried on the outer peripheral surface of the transfer roll 101 reaches the transfer portion N1 by the rotation of the transfer roll 101, the transparent agent 3 is transferred from the outer peripheral surface of the transfer roll 101 to the transfer surface 2u of the concavo-convex sheet 2. Transcript to.

  Next, a determination step of determining the transfer state of the transparent agent 3 to the uneven sheet 2 is performed. In the determination step, the transparent agent 3 is supplied from the supply tank 103 between the transfer unit N1 and the supply unit N2 using the light emitting unit (not shown) of the first sensor 104, and the transparent sheet 2 is supplied with the transparent agent. The light is irradiated toward the outer peripheral surface of the transfer roll 101 before transferring 3. Then, the first reflected light reflected by the outer peripheral surface of the transfer roll 101 is received using a light receiving unit (not shown) of the first sensor 104. In this way, the first sensor 104 acquires the first reflected light amount as the first information. When the first sensor 104 acquires the first reflected light amount, the first reflected light amount acquired by the first sensor 104 is transmitted to the determination unit 106 wirelessly or by wire.

  In the determination step, as shown in FIG. 1, the transparent agent 3 is applied between the transfer portion N <b> 1 and the supply portion N <b> 2 using the light emitting portion (not shown) of the second sensor 105. Light is irradiated toward the outer peripheral surface of the transfer roll 101 after the transfer onto the transfer surface 2u and before the transparent agent 3 is newly supplied from the supply tank 103. At this time, the light emitting unit (not shown) of the second sensor 105 irradiates light toward the outer peripheral surface of the transfer roll 101 corresponding to the position where the light emitting unit (not shown) of the first sensor 104 irradiates light. . Then, the second reflected light reflected by the outer peripheral surface of the transfer roll 101 after the transparent agent 3 is transferred to the transfer surface 2 u of the concavo-convex sheet 2 is received using a light receiving portion (not shown) of the second sensor 105. . In this way, the second sensor 105 acquires the second reflected light amount as the second information. When the second sensor 105 acquires the second reflected light amount, the second reflected light amount acquired by the second sensor 105 is transmitted to the determination unit 106 wirelessly or by wire.

  Here, after applying the transparent agent 3 to the transfer roll 101, in the manufacturing method of the agent-containing sheet 1 that transfers the transparent agent 3 applied to the transfer roll 101 to the concavo-convex sheet 2, As information about the outer peripheral surface of the transfer roll 101, specifically, the reflected light amount of light radiated toward the outer peripheral surface of the transfer roll 101 before the transfer of the transparent agent 3 to the uneven sheet 2, and the reflected light amount of the acquired light By comparing the amount of reflected light with respect to the outer peripheral surface of the transfer roll 101 after transfer at the same outer peripheral surface position, it is possible to stably determine the transfer state of the transparent agent 3 onto the uneven sheet 2. I found it.

  The graph shown in FIG. 2 uses the manufacturing apparatus 100 having the transfer roll 101, the receiving roll 102, the first sensor 104, and the second sensor 105, and changes the clearance (horizontal axis) between the transfer roll 101 and the receiving roll 102. In this case, the measurement result of the light amount conversion value (vertical axis) obtained by converting the reflected light amount acquired by the first sensor 104 and the second sensor 105 into a voltage is plotted. The clearance on the horizontal axis in FIG. 2 is changed relative to the specific value d. Moreover, A in the figure plots the result of measuring the first light quantity conversion value obtained by converting the first reflected light quantity acquired by the first sensor 104 into a voltage, and B in the figure shows the second sensor 105. Is a plot of the measurement result of the second light quantity conversion value obtained by converting the acquired second reflected light quantity into voltage.

  From the result shown in FIG. 2, the first light quantity conversion value A acquired by the first sensor 104 is substantially constant, whereas the second light quantity conversion value B acquired by the second sensor 105 is the transfer roll 101 and the receiving roll. It can be seen that there is a correlation so that the clearance with 102 is correlated.

  Specifically, since the first light quantity conversion value A acquired by the first sensor 104 from the transfer roll 101 before transferring the transparent agent 3 to the uneven sheet 2 is substantially constant, the transfer roll 101 before transfer is substantially constant. It can be seen that the clearing agent 3 is coated on the surface. Further, by changing the clearance between the transfer roll 101 and the receiving roll 102, the nip pressure to the concavo-convex sheet 2 supplied between the transfer roll 101 and the receiving roll 102 changes, and the nip pressure changes. Based on this, it can be seen that the amount of the transparent agent 3 attached to the outer peripheral surface of the transfer roll 101 after the transparent agent 3 is transferred to the uneven sheet 2 changes. Specifically, as the clearance between the transfer roll 101 and the receiving roll 102 increases, the second light quantity conversion acquired by the second sensor 105 from the transfer roll 101 after transferring the transparent agent 3 to the concavo-convex sheet 2. It can be seen that the value increases. That is, it can be seen that the second reflected light amount acquired by the second sensor 105 after transfer increases as the amount of the transparent agent 3 attached to the outer peripheral surface of the transfer roll 101 after transfer increases. Therefore, by comparing the first reflected light amount acquired by the first sensor 104 before the transfer of the transparent agent 3 and the second reflected light amount acquired by the second sensor 105 after the transfer of the transparent agent 3, It can be seen that the transfer state of the transparent agent 3 to the uneven sheet 2 can be inspected stably.

  The graph shown in FIG. 3 shows the first light amount acquired by the first sensor 104 shown in FIG. 2 when the manufacturing apparatus 100 is used and the clearance (horizontal axis) between the transfer roll 101 and the receiving roll 102 is changed. The light amount conversion difference value C (vertical axis) between the conversion value A and the second light amount conversion value B acquired by the second sensor 105 is plotted. Note that the clearance on the horizontal axis in FIG. 3 is changed relative to the specific value d.

  From the results shown in FIG. 3, it can be seen that there is a correlation between the clearance between the transfer roll 101 and the receiving roll 102 and the light quantity conversion difference value C. Specifically, it can be seen that the light amount conversion difference value C decreases as the clearance between the transfer roll 101 and the receiving roll 102 increases. That is, from the graph shown in FIG. 3, the larger the amount of the transparent agent 3 that adheres to the outer peripheral surface of the transfer roll 101 after transferring the transparent agent 3, that is, the smaller the amount of the transparent agent 3 transferred to the uneven sheet 2. It can be seen that the difference value between the first reflected light amount acquired by the first sensor 104 and the second reflected light amount acquired by the second sensor 105 becomes small. Therefore, by using the difference value between the first reflected light amount acquired by the first sensor 104 and the second reflected light amount acquired by the second sensor 105, the transfer state of the transparent agent 3 onto the uneven sheet 2 in the transfer roll 101 is determined. It turns out that it can test | inspect stably.

  Moreover, the graph shown in FIG. 4 plots the relationship between the transfer amount (horizontal axis) of the transparent agent 3 with respect to the uneven sheet 2 and the light amount conversion difference value C (vertical axis) shown in FIG. It is.

  From the results shown in FIG. 4, the transfer amount of the transparent agent 3 to the uneven sheet 2 and the light amount conversion difference value C are expressed by the relational expression y = Ex + F (y: light amount conversion difference value, x = transfer amount of the transparent agent to the uneven sheet). It can be seen that there is a correlation between the two. Note that the straight line D in FIG. 4 is based on linear approximation (a regression line by the least square method).

  For the graph shown in FIG. 4, a reference value (target value) of the transfer amount of the transparent agent 3 with respect to the concavo-convex sheet 2 is set as a in advance, and a standard range (for example, 0.5a to 1 shown in FIG. .5a) is set. And the transfer amount of the transparent agent 3 with respect to the uneven | corrugated sheet | seat 2 in each light quantity conversion difference value shown in FIG. 3 is measured, The result is plotted, For example, the straight line D shown in FIG. 4 is calculated | required by the least squares method. In the graph shown in FIG. 4, for example, if 0.5a to 1.5a is set as the standard range of the transfer amount of the transparent agent 3 with respect to the concavo-convex sheet 2, the light amount conversion difference value (optimum of the light amount conversion difference value in the standard range) is set. The range) can be estimated from the straight line D to be 0.1V to 0.35V. That is, a standard range of the transfer amount of the transparent agent 3 to the uneven sheet 2 is set in advance, and a straight line D of the photoelectric conversion difference value with respect to the transfer amount of the transparent agent 3 to the uneven sheet 2 is obtained. The optimum range (0.1 V to 0.35 V) of the light amount conversion difference value in .about.1.5 a) is obtained. And the quality of transcription | transfer of the transparent agent 3 to the uneven | corrugated sheet 2 can be estimated by using the optimal range (0.1V-0.35V) of light quantity conversion difference value. Specifically, if the light amount conversion difference value in the standard range (0.5a to 1.5a) of the ratio of the transparent agent 3 to the weight of the concavo-convex sheet 2 is smaller than the optimum range (0.1V to 0.35V), transfer is performed. If it is estimated that there is a shortage, and it is larger than the optimum range (0.1 V to 0.35 V), it can be estimated that there is excessive transfer.

  Based on the above, in the method for manufacturing the agent-containing sheet-like material 1, a standard range of the transfer amount of the transparent agent 3 to the uneven sheet 2 is set in advance, and the first reflected light amount acquired by the first sensor 104 corresponding to the standard range. An optimal range of a difference value (for example, light amount conversion difference value) between the second reflected light amount (for example, second light amount conversion value) acquired by the second sensor 105 (for example, a first light amount conversion value) is obtained in advance.

  If the optimum range of the difference value is obtained, the determination unit 106 compares the first reflected light amount and the second reflected light amount transmitted to the determination unit 106, and the transparent agent 3 for the uneven sheet 2 in the transfer roll 101. Can be judged. Preferably, in the determination step using the determination unit 106, (1) a first light amount conversion value of the first reflected light amount acquired by the first sensor 104 and a second light amount conversion of the second reflected light amount acquired by the second sensor 105. Whether or not the light amount conversion difference value with respect to the value is within the optimum range of the light amount conversion difference value, and then (2) the light amount conversion difference value between the first light amount conversion value and the second light amount conversion value is When the light amount conversion difference value is within the optimum range, the agent-containing sheet-like material 1 is determined as a non-defective product. In the determination step using the determination unit 106, (3) when the light amount conversion difference value is lower than the optimum range of the light amount conversion difference value, the transfer is insufficient, and the light amount conversion difference value is smaller than the optimum range of the light amount conversion difference value. Is too high, it is judged that the agent-containing sheet 1 is a defective product due to excessive transfer.

  In the manufacturing method of the agent-containing sheet 1, the agent-containing sheet 1 is manufactured while determining the state of the transparent agent 3 transferred to the transfer surface 2 u of the uneven sheet 2 in the determination step. . Then, an adjustment process for adjusting the transfer condition is performed based on the determination result of the determination process. For example, when the determination unit 106 determines that the agent-containing sheet 1 is a defective product with insufficient transfer, the manufacturing apparatus 100 is stopped or the supply amount from the supply tank 103 to the transfer roll 101 is increased in the adjustment process. To do. If the determination unit 106 determines that the agent-containing sheet 1 is a defective product with excessive transfer, the manufacturing apparatus 100 is stopped or the supply amount from the supply tank 103 to the transfer roll 101 is reduced in the adjustment process. To do. Further, for example, when the determination unit 106 determines that the agent-containing sheet-like material 1 is a defective product, the adjustment unit 106 receives the transfer roll 101 so that the light amount conversion difference value is within the optimum range of the light amount conversion difference value. The clearance with the roll 102 is changed.

  As described above, the method for inspecting an agent-containing sheet-like material of the present invention uses the first sensor 104 and the second sensor 105 to transfer the transparent agent 3 to the concavo-convex sheet 2 before and after the transfer. The transfer state of the transparent agent 3 to the concavo-convex sheet 2 is determined by comparing information on the outer peripheral surface of the transparent agent 3, for example, the state of the transparent agent 3 existing on the outer peripheral surface. Therefore, the transfer state of the transparent agent 3 (liquid agent in the agent-containing sheet-like material 1) to the uneven sheet 2 can be determined stably, and the agent-containing sheet-like material 1 can be inspected efficiently and continuously. it can. And according to the manufacturing method of the agent-containing sheet-like material 1 to which the inspection method for the agent-containing sheet-like material of the present invention is applied, the transfer state of the transparent agent 3 (the liquid agent in the agent-containing sheet-like material 1) to the uneven sheet 2 Can be determined stably, and the concavo-convex sheet 2 (agent-containing sheet-like material 1) to which the liquid agent (transparent agent) 3 has been transferred can be produced efficiently and continuously.

  In particular, optical sensors are used as the first sensor 104 and the second sensor 105, and the first reflected light (for example, the first light amount conversion value) and the second reflection that are acquired by irradiating the outer surface of the transfer roll 101 with light. By comparing and judging light (for example, the first light quantity conversion value), the transfer state of the transparent agent 3 (liquid agent in the agent-containing sheet-like material 1) to the uneven sheet 2 can be more easily determined stably. Become. Furthermore, by determining using the difference value (for example, light amount conversion difference value) between the first reflected light (for example, the first light amount conversion value) and the second reflected light (for example, the second light amount conversion value) to be acquired, Judgment becomes easier.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not limited to this embodiment. For example, in the above-described embodiment, it has been described that the method for inspecting an agent-containing sheet material of the present invention can be incorporated into a part of the method for producing the agent-containing sheet material. May be incorporated into a part of the method for producing another agent-containing sheet.

  Moreover, in the manufacturing method of the agent-containing sheet-like material 1, as information on the outer peripheral surface of the transfer roll 101 before and after transferring to the uneven sheet 2, using the optical sensor for the first sensor 104 and the second sensor 105, Although the amount of reflected light is used, the present invention is not limited to the amount of reflected light. For example, the image sensor is used for the first sensor 104 and the second sensor 105, and the transparent agent exists in the transfer roll 101 before and after transfer to the concavo-convex sheet 2. Imaging data obtained by imaging 3 may be used.

  Moreover, in the manufacturing method of the agent containing sheet-like material 1 mentioned above, although the transparent agent 3 is used as a liquid agent, you may use the liquid agent which became cloudy.

1 agent-containing sheet-like material 2 uneven sheet (sheet-like material)
2u Transfer surface 3 Transparency agent 100 Manufacturing apparatus 101 Transfer roll 102 Receiving roll 103 Supply tank 104 First sensor 105 Second sensor 106 Judgment part A First light quantity conversion value B Second light quantity conversion value C Light quantity conversion difference value N1 Transfer part N2 Transition Department

Claims (7)

A method for inspecting an agent-containing sheet-like material, which transfers a liquid agent carried on the outer peripheral surface of a transfer roll to a sheet-like material,
A first sensor for acquiring first information relating to an outer peripheral surface of the transfer roll before transferring the carried liquid agent to the sheet-like material; and an outer periphery of the transfer roll after transferring the liquid agent to the sheet-like material. Using a second sensor for acquiring second information about the surface,
The first information of the outer peripheral surface of the transfer roll acquired by the first sensor, and the outer peripheral surface of the transfer roll acquired by the second sensor at the same position of the outer peripheral surface as the acquired first information. The method for inspecting an agent-containing sheet, wherein the second information is compared to determine a transfer state of the liquid onto the sheet. The first sensor and the second sensor are optical sensors that acquire a reflected light amount of light emitted toward an outer peripheral surface of the transfer roll as the first information and the second information,
The method for inspecting an agent-containing sheet-like object according to claim 1, wherein the first reflected light amount acquired by the first sensor is compared with the second reflected light amount acquired by the second sensor.   The method for inspecting an agent-containing sheet-like material according to claim 2, wherein a transfer state of the liquid agent to the sheet-like material is determined using a difference value between the first reflected light amount and the second reflected light amount.   The said 1st sensor and the said 2nd sensor have a light emission part, respectively, The agent containing of Claim 2 or 3 which irradiates light perpendicularly | vertically with respect to the outer peripheral surface of the said transfer roll using this light emission part. Sheet inspection method.   The method for inspecting an agent-containing sheet-like material according to any one of claims 1 to 4, wherein the sheet-like material is an uneven sheet having an uneven shape on a transfer surface onto which the liquid agent is transferred.   The method for inspecting an agent-containing sheet-like material according to any one of claims 1 to 5, wherein the liquid agent is a transparent agent. A method for producing an agent-containing sheet,
A transfer step of transferring the liquid agent carried on the outer peripheral surface of the transfer roll to the sheet-like material;
A first sensor for acquiring first information relating to an outer peripheral surface of the transfer roll before transferring the carried liquid agent to the sheet-like material; and an outer periphery of the transfer roll after transferring the liquid agent to the sheet-like material. A second sensor that acquires second information about the surface, the first information of the outer peripheral surface of the transfer roll acquired by the first sensor, and the same position of the outer peripheral surface as the acquired first information. A determination step of comparing the second information of the outer peripheral surface of the transfer roll acquired by the second sensor to determine a transfer state of the liquid agent to the sheet-like material;
A method for producing an agent-containing sheet material, comprising: an adjustment step of adjusting transfer conditions based on a determination result of the determination step.

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