Blister packaging machine and method for manufacturing blister sheets

Abstract

To provide a blister packaging machine reduced in production cost.SOLUTION: A PTP packaging machine 10 as a blister packaging machine detects a relative position of a label member 7 in relation to the reference part of a container film 3, between a position for sticking the label member 7 along the conveying route of a PTP film 6 and a position for separating the PTP film 6. On the basis of the detected relative position, the sticking position of the label member 7 is corrected and / or the propriety of the sticking position is determined. Accordingly, even when displacement of the sticking position of the label member 7 occurs due to some failure, the failure can be detected or the sticking position can be corrected, before the label member 7 reaches the position for separating the PTP film 6. Thus, the quantity of the PTP film 6 needed to be discarded due to sticking position failure can be reduced, thus reducing the production cost.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a blister packaging machine for producing a blister sheet having pockets containing contents, and a method for producing a blister sheet. [Background technology]

[0002] A press-through pack (PTP) sheet is known as a blister sheet generally used in the fields of medicines, food, etc. A PTP sheet comprises a container film having a pocket portion in which contents such as tablets are stored, and a cover film attached to the container film so as to seal the opening side of the pocket portion.

[0003] Such PTP sheets are manufactured through a process of forming a pocket in a strip-shaped container film being transported, a process of filling the pocket with contents, a process of attaching a cover film to the container film so as to seal the open side of the pocket, and a process of punching out the strip-shaped PTP film consisting of the container film and cover film and cutting it into PTP sheet units (cutting process).

[0004] In addition, in order to provide more information to users, etc., there are also PTP sheets to which a label member on which various information is written is attached (see, for example, Patent Documents 1 and 2). On the label member, for example, information such as the name of the contents and usage is written.

[0005] As a blister packaging machine (PTP packaging machine) for producing a PTP sheet having a label member attached thereto as described above, for example, a machine that attaches a label member to the PTP film and then cuts off the PTP film to which the label member is attached in the cutting process is known (see, for example, Patent Documents 3 and 4, etc.).

[0006] However, if the attachment position of the label material is deviated from the planned cutting position (planned punching position) of the PTP film, the label material may be cut in the cutting process, causing the label material to not function fully, or may cause problems in subsequent processing of the manufactured PTP sheets (e.g., stacking of PTP sheets, etc.) In this regard, the above-mentioned Patent Document 3 describes a method for suppressing deviation of the attachment position from the planned cutting position by adjusting the timing of supplying the label material to the PTP film side based on the value of an encoder in a continuous feed roller for transporting the container film. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2017-226456 A [Patent Document 2] Utility Model Registration No. 3216800 [Patent Document 3] JP 2012-25481 A [Patent Document 4] International Publication No. 2008-146836 Summary of the Invention [Problem to be solved by the invention]

[0008] However, even if the above method is adopted, in the end, it is not possible to judge whether the label member is attached to the PTP sheet in the correct position until the PTP film is actually cut off (punched out). Therefore, if a deviation in the attachment position occurs due to some malfunction, even if the device is stopped after detecting the deviation, the attachment position may be inappropriate for at least the PTP film located between the position where the label member is attached and the position where the PTP film is cut off. This may result in a waste of many materials (container film, cover film, label member) and an increase in production costs.

[0009] In addition, since it is not possible to judge whether the attachment position is appropriate or not until the PTP film is actually cut off (punched out), there is a risk that a great deal of work will be required when switching the type of PTP sheet produced by the PTP packaging machine (for example, when changing the shape of the pocket portion or the dimensions of the sheet). For example, there is a risk that it will be necessary to alternately and repeatedly perform adjustment work such as the attachment position of the label member on the PTP film and confirmation work on the actual attachment position of the label member based on the PTP sheet obtained by actually cutting off (punching out) the PTP film. Furthermore, there is a risk that a lot of materials will be wasted as a result of the work.

[0010] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a blister packaging machine and the like that can reduce production costs, etc. [Means for solving the problem]

[0011] The following describes each of the means suitable for achieving the above object. Note that, as necessary, the specific effects of the corresponding means will be added.

[0012] Means 1. A blister packaging machine for producing a blister sheet in which a pocket portion formed in a container film is filled with contents, a cover film is attached to the container film so as to close the pocket portion, and a predetermined label member is attached to the cover film, an attachment means for attaching the strip-shaped cover film to the strip-shaped container film having the contents accommodated in the pocket portion; a label attachment means for attaching the label member to a strip-shaped blister film formed by attaching the cover film to the container film; The blister film to which the label member is attached is , with the pocket portion as a reference a separating means for separating the blister sheet to obtain the blister sheet; a label relative position detection means for detecting a relative position of the label member with respect to a predetermined reference portion of the container film between a position where the label member is attached by the label attachment means and a position where the blister film is cut by the cutting means along the conveying path of the blister film, a label relative position detection unit that detects the relative position of the label member relative to the blister film and / or determines whether the label member is attached to the blister film or not based on the relative position detected by the label relative position detection unit; A blister packaging machine, characterized in that the reference portion is the pocket portion.

[0013] According to the above-mentioned means 1, the label relative position detection means detects the relative position of the label member with respect to the reference portion of the container film between the position where the label member is attached and the position where the blister film is cut off. Then, based on the detection result, the quality of the attachment position of the label member with respect to the blister film is judged and corrected. In other words, the position of the label member is not detected after the blister film is cut off, but the position of the label member is detected before the label member reaches the cutting means, and based on the detection result, the quality of the attachment position of the label member is judged and the attachment position of the label member to be attached thereafter is corrected. Therefore, even if the attachment position of the label member is shifted from the intended cut-off position of the blister film due to some defect, the defect can be detected and the attachment position can be corrected before the label member reaches the cutting means. This can reduce the amount of blister film (blister sheet) that must be discarded due to a defective attachment position, thereby reducing production costs.

[0014] In addition, because the quality of the application position can be automatically judged and the application position can be corrected before the blister film is cut off, the work of switching the type of blister sheet produced by the blister packaging machine becomes very easy. Furthermore, it is possible to more reliably prevent a large amount of materials from being wasted during the work.

[0015] In addition, the blister film is separated by the separating means. 、 "Container film" of While the pocket portion is used as a reference, according to the above-mentioned means 1, the detected relative position of the label material is relative to the pocket portion (reference portion) of the "container film." As a result, the detected relative position of the label material is based on the planned separation position. Therefore, the attachment position can be corrected and the pass / fail judgment can be performed based on the planned separation position (the portion that is the outer edge of the blister sheet), and the accuracy of the correction and the pass / fail judgment can be improved. Furthermore, since the pocket portion, which is always provided in the container film, is used as the reference portion, it is possible to improve the convenience in detecting the relative position of the label member.

[0016] Means 2. An imaging means for imaging the blister film to which the label member is attached is provided between a position where the label attachment means attaches the label member and a position where the blister film is cut off by the cutting means along the conveyance path of the blister film, the label relative position detection means is configured to detect a relative position of the label member with respect to the reference portion based on the image obtained by the imaging means, The blister packaging machine according to Means 1, characterized in that the image obtained by the imaging means includes the reference portion and the label member.

[0017] According to the above-mentioned means 2, the label relative position detection means detects the relative position of the label member with respect to the reference portion of the container film based on an image (one image) including the reference portion and the label member. Therefore, the relative position can be detected easily and accurately. This reduces the processing load and enables more accurate judgment and correction of the attachment position.

[0018] Means 3. An X-ray irradiation means is disposed so as to face the imaging means across the blister film, and irradiates the blister film with X-rays; The blister packaging machine described in Means 2, characterized in that the label relative position detection means is configured to detect the relative position of the label member with respect to the reference portion by an X-ray transmission image based on X-rays that have passed through the blister film and are obtained by the imaging means.

[0019] According to the above-mentioned means 3, even if a metal such as aluminum is used for the container film or cover film, an image showing the reference portion of the container film and the label member can be easily obtained, and the relative position of the label member with respect to the reference portion can be detected more easily and accurately.

[0020] Means 4. Obtained by the imaging means R The blister packaging machine according to Means 2 or 3, further comprising a condition determining means for determining whether the condition of the label member itself is good or bad based on the image.

[0021] According to the above-mentioned means 4, the state determining means can determine whether the state of the label member itself is good or bad (for example, whether the label member is wrinkled or torn). Therefore, it is possible to more reliably improve the quality of the blister sheet to which the label member is attached.

[0022] In addition, since the quality of the label member is judged based on an image for detecting the relative position of the label member, there is no need to obtain a separate image for this quality judgment or to provide a device for obtaining a separate image (such as a camera). This makes it possible to prevent the blister packaging machine from becoming larger and more complicated, and ultimately to suppress increases in costs related to the manufacture and maintenance of the blister packaging machine.

[0023] Means 5. A blister packaging machine as described in any one of Means 2 to 4, characterized in that the imaging means is provided along the transport path of the blister film, immediately downstream of the position where the label application means applies the label material.

[0024] In addition, "immediately downstream of the position where the label member is affixed by the label application means" refers to, for example, the range between the position where the label member is affixed and a position a predetermined number of sheets (for example, 2 to 10 blister sheets) downstream from that position.

[0025] According to the above-mentioned means 5, the relative position of the label material can be detected immediately downstream of the position where the label material is attached, so that the number of blister films (blister sheets) that have to be discarded due to improper attachment position can be significantly reduced. As a result, the production cost can be reduced very effectively. In addition, it is also possible to significantly reduce the waste of materials involved in changing the type of blister sheet.

[0028] means 6 the label relative position detection means is configured to detect the relative position of the label member with respect to each of a plurality of pockets provided at different positions along the width direction of the blister film, The label relative position detecting means detects a plurality of relative positions, and based on the detected relative positions, at least a quality judgment is made as to whether or not the label member is attached to the blister film. Any of 1 to 5 2. The blister packaging machine according to claim 1 .

[0029] The above means 6According to the method, the label relative position detection means detects a plurality of relative positions of the label material with respect to a plurality of pockets (reference portions) provided at different positions along the width direction of the blister film. Then, based on the detected plurality of relative positions, a pass / fail judgment is made regarding the application position of the label material. Therefore, it is possible to judge whether or not the label material is tilted, and the inspection accuracy regarding the application position of the label material can be further improved.

[0030] Means 7. A method for producing a blister sheet, comprising the steps of: attaching a cover film to a pocket portion formed in a container film so as to close the pocket portion while the content is contained in the pocket portion; and attaching a predetermined label member to the cover film, a step of attaching the band-shaped cover film to the band-shaped container film having the contents accommodated in the pocket portion; a label attachment step of attaching the label member to a band-shaped blister film formed by attaching the cover film to the container film; The blister film to which the label member is attached is , with the pocket portion as a reference a cutting step of obtaining the blister sheet; a label relative position detection step of detecting a relative position of the label member with respect to a predetermined reference portion of the container film between a position where the label member is attached in the label attachment step and a position where the blister film is separated in the separation step along a transport path of the blister film, performing at least one of correcting an attachment position of the label member with respect to the blister film and determining whether the attachment position is good or bad based on the relative position detected in the label relative position detection step; A method for manufacturing a blister sheet, wherein the reference portion is the pocket portion.

[0031] The above means 7 According to this, the same effects as those of the above-mentioned Means 1 can be achieved. [Brief description of the drawings]

[0032] [Figure 1] FIG. 2 is a perspective view showing a PTP sheet. [Diagram 2] FIG. 2 is a partially enlarged cross-sectional view of the PTP sheet. [Diagram 3] FIG. 2 is a perspective view showing a PTP film. [Figure 4] 2 is a plan view showing the rear side of a PTP sheet to which a label member is attached. FIG. [Diagram 5] 1 is a plan view showing the rear side of the PTP sheet with the label member opened. FIG. [Figure 6] FIG. 1 is a schematic diagram showing a schematic configuration of a PTP packaging machine. [Figure 7] FIG. 2 is a schematic diagram showing a schematic configuration of a label attachment device and the like. [Figure 8] FIG. 2 is a diagram showing an image obtained by an imaging device. [Figure 9] 13A and 13B are diagrams showing images in which a label member is misaligned in its application position; [Figure 10] FIG. 13 is a diagram showing an image when the lid member is tilted. [Figure 11] 13A and 13B are diagrams showing images in which a tear or the like has occurred in a label member. [Figure 12] 13 is a diagram for explaining the relative position of a closure member in another embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] An embodiment will be described below with reference to the drawings. First, the configuration of a PTP sheet as a "blister sheet" will be described.

[0034] As shown in FIGS. 1 and 2, the PTP sheet 1 has a container film 3 having a plurality of pocket portions 2, and a cover film 4 attached to the container film 3 so as to cover the pocket portions 2.

[0035] The container film 3 in this embodiment is made of a transparent thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride) and has light-transmitting properties. On the other hand, the cover film 4 is made of an opaque material (such as aluminum foil) with a sealant made of polypropylene resin or the like provided on the surface. Of course, the materials of the films 3 and 4 are not limited to these, and other materials may be used.

[0036] The PTP sheet 1 has two rows of pockets in the short direction, each row consisting of three pockets 2 arranged along the long direction. In other words, a total of six pockets 2 are formed. Each pocket 2 contains one tablet 5 as the "contents."

[0037] The PTP sheet 1 is manufactured by punching out a strip-shaped PTP film 6 (see FIG. 3) formed from a strip-shaped container film 3 and a strip-shaped cover film 4 into a sheet, and is formed into a generally rectangular shape in a plan view. In this embodiment, the PTP film 6 corresponds to a "blister film." The PTP film 6 in this embodiment is configured such that the number of pockets 2 corresponding to one sheet (i.e., three) are arranged along its width direction.

[0038] As shown in FIGS. 4 and 5, a label member 7 is attached to the cover film 4 side of the PTP sheet 1.

[0039] The label member 7 in this embodiment is a two-fold type made of paper and has a fixed piece portion 7a attached to the cover film 4 and a flap piece portion 7b connected to one side of the fixed piece portion 7a so as to be freely opened and closed.

[0040] However, when the label member 7 is first attached, three sides of the label member 7, excluding the connecting portion between the fixed piece 7a and the flap piece 7b, which is the fold of the label member 7, are releasably adhered to the fixed piece 7a, and the label member 7 is in a closed state. When a user peels the adhered portion of the flap piece 7b off the fixed piece 7a, the label member 7 is opened as shown in FIG.

[0041] A pressure-sensitive adhesive layer is provided on the outer surface of the fixed piece 7a, and the label member 7 is attached to the cover film 4 via the pressure-sensitive adhesive layer. The fixed piece 7a is perforated along the peripheral shape of each pocket 2 to form a tearable removal portion 7c. This allows the user to easily remove the tablets 5 contained in the pocket 2 through the fixed piece 7a without peeling off the label member 7. In this embodiment, the removal portion 7c is one size larger than the peripheral shape of the pocket 2 (the opening shape of the pocket 2).

[0042] In addition, various information regarding the tablets 5, such as the name, usage, effects, number to be taken, and time to take the tablets, is printed on the inner surfaces of the fixed piece 7a and the flap piece 7b, as well as the outer surface of the flap piece 7b.

[0043] Next, there will be described a schematic configuration of a PTP packaging machine 10 for manufacturing the PTP sheet 1. In this embodiment, the PTP packaging machine 10 constitutes a "blister packaging machine."

[0044] As shown in Fig. 6, a strip-shaped original web of container film 3 is wound into a roll on the most upstream side of the PTP packaging machine 10. The pull-out end of the rolled container film 3 is guided by a guide roll 13. The container film 3 is hung on an intermittent feed roll 14 on the downstream side of the guide roll 13. The intermittent feed roll 14 is connected to a motor that rotates intermittently, and transports the container film 3 intermittently.

[0045] Between the guide roll 13 and the intermittent feed roll 14, a heating device 15 and a pocket forming device 16 are disposed in this order along the transport path of the container film 3. Then, after the container film 3 is heated by the heating device 15 and becomes relatively flexible, a plurality of pockets 2 are formed at predetermined positions in the container film 3 by the pocket forming device 16. The pockets 2 are formed during intervals between transport operations of the container film 3 by the intermittent feed roll 14.

[0046] The container film 3 fed from the intermittent feed roll 14 is wrapped around a tension roll 18, a guide roll 19, and a film receiving roll 20, in that order. The film receiving roll 20 is connected to a motor that rotates at a constant speed, so it transports the container film 3 continuously at a constant speed. The tension roll 18 pulls the container film 3 toward the tension side by its elastic force, preventing slack in the container film 3 due to differences in the transport operations of the intermittent feed roll 14 and the film receiving roll 20, and keeping the container film 3 in a constantly tensed state.

[0047] Between the guide roll 19 and the film receiving roll 20, a filling device 21 and an inspection device 22 are disposed in this order along the transport path of the container film 3.

[0048] The filling device 21 fills each pocket 2 with tablets 5, for example, by opening a shutter at predetermined intervals to allow the tablets 5 to fall freely. The inspection device 22 inspects, for example, whether the tablets 5 are securely filled in each pocket 2, whether there are any abnormalities in the tablets 5, and whether there is any foreign matter mixed into the pocket 2.

[0049] On the other hand, the original web of cover film 4 formed in a belt shape is wound into a roll on the most upstream side. The drawn-out end of the rolled cover film 4 is guided toward heating roll 25 by guide roll 24.

[0050] The heating roll 25 can be pressed against the film receiving roll 20, and the container film 3 and the cover film 4 are fed between the rolls 20 and 25. The container film 3 and the cover film 4 pass between the rolls 20 and 25 in a heated and pressed state, whereby the cover film 4 is attached to the container film 3 and the pocket portion 2 is closed with the cover film 4. As a result, a strip-shaped PTP film 6 in which tablets 5 are accommodated in each pocket portion 2 is produced. In this embodiment, the film receiving roll 20 and the heating roll 25 constitute the "attaching means". The process of attaching the cover film 4 to the container film 3 by the rolls 20 and 25 corresponds to the "attaching process".

[0051] The PTP film 6 sent out from the film receiving roll 20 is hung in this order around the tension roll 27 and the intermittent feed roll 28. The intermittent feed roll 28 is connected to a motor that rotates intermittently, and therefore intermittently transports the PTP film 6. The tension roll 27 pulls the PTP film 6 toward the tensioned side by its elastic force, preventing slack in the PTP film 6 due to the difference in transport operation between the film receiving roll 20 and the intermittent feed roll 28, and keeping the PTP film 6 in a constant tensioned state.

[0052] A label sticking system 30 is disposed on the transport path of the PTP film 6 between the film receiving roll 20 and the tension roll 27. The label sticking system 30 will be described in detail later.

[0053] The PTP film 6 sent out from the intermittent feed roll 28 is hung in this order around the tension roll 31 and the intermittent feed roll 32. The intermittent feed roll 32 is connected to a motor that rotates intermittently, and therefore intermittently transports the PTP film 6. The tension roll 31 pulls the PTP film 6 toward the tension side by its elastic force, and prevents the PTP film 6 from slackening between the intermittent feed rolls 28 and 32.

[0054] Between the intermittent feed roll 28 and the tension roll 31, marking devices 34 are disposed in sequence along the transport path of the PTP film 6. The marking devices 34 have a function of marking a predetermined position (e.g., a tag portion) of the PTP film 6. Note that the marking is not shown in FIG. 1 etc.

[0055] The PTP film 6 sent out from the intermittent feed roll 32 is hung on a tension roll 35 and a continuous feed roll 36 in that order downstream. A sheet punching device 37 is disposed between the intermittent feed roll 32 and the tension roll 35 along the transport path of the PTP film 6. The sheet punching device 37 has a function of punching (cutting off) a predetermined position of the PTP film 6 based on the pocket portion 2. The PTP sheet 1 is obtained by punching (cutting off) the PTP film 6. In this embodiment, the sheet punching device 37 constitutes the "cutting means". Moreover, the process of cutting off the PTP film 6 by the sheet punching device 37 to obtain the PTP sheet 1 corresponds to the "cutting process".

[0056] The PTP sheet 1 obtained by the sheet punching device 37 is transported by a conveyor 39 and stored in a finished product hopper 40. However, if a defective PTP sheet 1 is determined by the inspection device 22, or by a bonding position quality determination unit 75 or a state determination unit 76, which will be described later, the PTP sheet 1 determined to be defective is not sent to the finished product hopper 40 but is discharged separately by a defective sheet discharge mechanism (not shown).

[0057] A cutting device 41 is disposed downstream of the continuous feed roll 36. An unnecessary film portion 42 constituting a strip-shaped remaining material portion (scrap portion) remaining after punching by the sheet punching device 37 is guided to the tension roll 35 and the continuous feed roll 36, and then led to the cutting device 41. The cutting device 41 cuts the unnecessary film portion 42 to a predetermined size. The cut unnecessary film portion 42 (scrap) is stored in a scrap hopper 43 and then disposed of separately.

[0058] Next, the configuration of the labeling system 30 will be described in detail with reference to Fig. 7. The labeling system 30 includes a labeling device 50, an X-ray irradiation device 61, an imaging device 62, and a control device 70. In this embodiment, the labeling device 50 constitutes the "labeling means", and similarly, the X-ray irradiation device 61 constitutes the "X-ray irradiation means", and the imaging device 62 constitutes the "imaging means".

[0059] First, a description will be given of the label sticking device 50. The label sticking device 50 is disposed corresponding to the cover film 4 side of the PTP film 6 being conveyed, and sticks a label member 7 onto the cover film 4.

[0060] A supply roll 52 around which a strip-shaped release paper 51 is wound is rotatably disposed upstream of the label application device 50. A plurality of label members 7 are removably attached to the surface of the release paper 51 at predetermined intervals. Each label member 7 is attached to the release paper 51 with its fold facing the transport direction of the release paper 51 (extending in the width direction of the release paper 51). In this embodiment, in order to absorb errors, the attachment pitch of the label members 7 on the release paper 51 is set to be slightly shorter than the sheet formation pitch of the PTP sheet 1 on the PTP film 6.

[0061] A take-up roll 53 that takes up the release paper 51 is provided on the most downstream side of the label application device 50. A pair of drive rolls 54a, 54b that pull out the release paper 51 from the supply roll 52 and sequentially transport it are provided slightly upstream of the take-up roll 53. The drive rolls 54a, 54b are controlled by the control device 70.

[0062] The release paper 51 drawn from the supply roll 52 is hung on a reversing member 55, passes through a guide roll 56, passes between drive rolls 54a and 54b, and is wound up by a winding roll 53.

[0063] The reversing member 55 is disposed adjacent to the cover film 4 side of the transported PTP film 6. The reversing member 55 has a triangular cross section whose tip portion tapers toward the joining rolls 57a and 57b described below.

[0064] The release paper 51 hung on the reversing member 55 is folded back at an acute angle at the tip of the reversing member 55 with its back surface abutting against the surface of the reversing member 55. In other words, the transport direction of the release paper 51 is reversed by the reversing member 55. By reversing the transport direction of the release paper 51 by the reversing member 55 in this manner, the label member 7 affixed to the surface of the release paper 51 is peeled off from the release paper 51.

[0065] Further, a pair of application rolls 57a, 57b are provided near the tip of the reversing member 55 so as to sandwich the PTP film 6. Then, the label member 7 peeled off from the release paper 51 by the reversing member 55 is guided between the application rolls 57a, 57b, whereby it is pressed against and applied to the cover film 4 of the PTP film 6.

[0066] In this way, in the label application device 50, the label material 7, which is peeled off from the release paper 51 at the tip of the reversing member 55 and sent out in synchronization with the continuous feeding operation of the PTP film 6, is sequentially guided between the application rolls 57a, 57b and applied to the portion of the PTP film 6 on the cover film 4 side that corresponds to the PTP sheet 1. By repeating such a process, the label material 7 is sequentially applied to the PTP film 6. In this embodiment, the process of applying the label material 7 to the PTP film 6 by the label application device 50 corresponds to the "label application process".

[0067] A sensor 59 for detecting the position of the label material 7 is provided upstream of the reversing member 55 along the transport direction of the release paper 51. The sensor 59 is used to adjust the timing of sending out the label material 7 relative to the PTP film 6. The detection result of the sensor 59 is input to the control device 70.

[0068] Next, a description will be given of the X-ray irradiator 61 and the imaging device 62. The X-ray irradiator 61 is disposed on the container film 3 side of the PTP film 6, and irradiates the PTP film 6 with X-rays that can penetrate the PTP film 6 (particularly the container film 3, the cover film 4, and the label member 7).

[0069] The imaging device 62 captures an image of the PTP film 6 to which the label material 7 is affixed, between the position where the label attachment device 50 attaches the label material 7 and the position where the sheet punching device 37 cuts off the PTP film 6, along the transport path of the PTP film 6. The imaging device 62 is disposed on the cover film 4 side of the PTP film 6, and faces the X-ray irradiation device 61 with the PTP film 6 in between. The positions of the X-ray irradiation device 61 and the imaging device 62 may be interchanged.

[0070] The imaging device 62 also includes a plurality of X-ray detection elements (not shown) capable of detecting X-rays, and obtains an X-ray transmission image based on the X-rays transmitted through the PTP film 6. In this embodiment, an image including at least a plurality of pocket portions 2 and one label member 7 located within the intended separation position Ub (the portion shown by the two-dot chain line in FIG. 8) of the PTP film 6 (i.e., corresponding to one PTP sheet 1) is obtained as the X-ray transmission image (see FIG. 8).

[0071] Furthermore, in this embodiment, the X-ray irradiation device 61 and the imaging device 62 are provided immediately downstream of the position where the label member 7 is affixed by the label attachment device 50 along the transport path of the PTP film 6. Note that "immediately downstream of the position where the label member 7 is affixed" refers to, for example, a range between the position where the label member 7 is affixed by the label attachment device 50 along the transport path of the PTP film 6 and a position several sheets (e.g., 2 to 10 sheets) downstream from that position.

[0072] The X-ray irradiator 61 and the image pickup device 62 are housed in a shielding box (not shown) made of a material capable of blocking X-rays. The shielding box is provided with a slit-shaped opening for passing the PTP film 6, and is structured to minimize leakage of X-rays to the outside.

[0073] Next, the control device 70 will be described. The control device 70 is configured as a so-called computer system including a CPU as a calculation means, a ROM for storing various programs, and a RAM for temporarily storing various data such as calculation data and input / output data. The control device 70 includes a camera timing control unit 71, an image memory 72, a judgment memory 73, a label relative position detection unit 74, an attachment position quality judgment unit 75, a status judgment unit 76, a result storage unit 77, and a correction control unit 78. In this embodiment, the label relative position detection unit 74 constitutes the "label relative position detection means", and the status judgment unit 76 constitutes the "status judgment means".

[0074] The camera timing control unit 71 controls the imaging timing of the imaging device 62. The imaging timing is controlled based on a signal from an encoder (not shown) provided in the PTP packaging machine 10, and imaging is performed by the imaging device 62 every time a predetermined amount of the PTP film 6 (e.g., 1 to 3 sheets) is fed.

[0075] The image memory 72 stores the X-ray transmission image obtained by the imaging device 62. Based on the X-ray transmission image stored in the image memory 72, a quality judgment and correction are performed regarding the attachment position of the label member 7. In addition, based on the X-ray transmission image, a quality judgment is also performed regarding the label member 7 itself.

[0076] The memory for judgment 73 is for storing various information used for judgment. The various information includes judgment criteria (position judgment criteria) for judging whether the affixing position of the label member 7 is good or bad and whether the affixing position needs to be corrected, judgment criteria (state judgment criteria) for judging whether the state of the label member 7 itself is good or bad, information for setting the inspection target range in the X-ray transmission image, information for identifying the pocket portion 2 in the X-ray transmission image, and the like.

[0077] The position determination criteria include, for example, a first position determination threshold T1, a second position determination threshold T2, a tilt determination threshold T3, a correction necessity determination threshold T4, and an ideal distance Lr. The position determination thresholds T1 and T2 are values ​​for determining whether the affixing position of the label member 7 along the transport direction of the PTP film 6 is good or bad. In particular, the threshold T1 indicates the minimum value of the allowable range for the affixing position, and the threshold T2 indicates the maximum value of the allowable range. The tilt determination threshold T3 is a value for determining whether or not the affixed label member 7 is tilted. The correction necessity determination threshold T4 is a value for determining whether or not the affixing position is corrected. The ideal distance Lr refers to the designed distance from a predetermined long side of the label member 7 along the transport direction of the PTP film 6 to a predetermined pocket portion 2 that is set in advance.

[0078] The condition determination criteria include, for example, area thresholds T5, T7 and length thresholds T6, T8, etc. The thresholds T5 to T8 are used to determine whether the label member 7 has tears, holes, or wrinkles.

[0079] The memory for determination 73 also stores a first numerical value and a second numerical value used in binarization processing of the X-ray transmission image. The first numerical value is used to extract a portion of the label member 7 that is suspected of having a tear or a hole. The second numerical value is used to extract a portion of the label member 7 that is suspected of having a wrinkle.

[0080] The label relative position detection unit 74 detects the relative position of the label member 7 with respect to a predetermined reference portion of the container film 3, between the position where the label member 7 is attached by the label attachment device 50 and the position where the PTP film 6 is cut off by the sheet punching device 37 along the transport path of the PTP film 6. In this embodiment, the reference portion is set to the pocket portion 2. Then, based on the X-ray transmission image obtained by the imaging device 62, the label relative position detection unit 74 detects the relative position of the label member 7 with respect to the pocket portion 2 for each of a plurality of pocket portions 2 provided at different positions along the width direction of the PTP film 6.

[0081] More specifically, the label relative position detection unit 74 detects, as the relative position, distances L1, L2 (see FIG. 8) from a predetermined long side of the label member 7 to two preset pocket portions 2 along the transport direction of the PTP film 6. The distances L1, L2 are detected for each label member 7. In this embodiment, the process of detecting the relative position of the label member 7 with respect to the reference portion (pocket portion 2) of the container film 3 by the label relative position detection unit 74 corresponds to the "label relative position detection process".

[0082] The attachment position quality determination unit 75 determines whether the attachment position of the label member 7 with respect to the PTP film 6 is good or bad based on the detection result (i.e., the distances L1, L2) by the label relative position detection unit 74. In this embodiment, two types of quality determinations are made for the attachment position.

[0083] The first pass / fail judgment regarding the attachment position is related to the positional deviation along the transport direction of the PTP film 6. This pass / fail judgment is performed using the position judgment thresholds T1 and T2 stored in the judgment memory 73 and the detection results (distances L1 and L2). For example, if the distance L1 or the distance L2 is smaller than the threshold T1, or if the distance L1 or the distance L2 is larger than the threshold T2 (see FIG. 9), a positional deviation of the label member 7 along the transport direction occurs, and the attachment position is judged to be defective in terms of the positional deviation. On the other hand, if the distance L1 and the distance L2 are equal to or larger than the threshold T1 and equal to or smaller than the threshold T2, respectively, the positional deviation is within the allowable range, and the attachment position is judged to be good in terms of the positional deviation.

[0084] The second pass / fail judgment regarding the attachment position is related to the inclination of the label member 7. This pass / fail judgment is performed using the detection result (distances L1, L2) and the inclination judgment threshold T3 stored in the judgment memory 73. For example, if the difference between the distances L1 and L2 is greater than the threshold T3, the label member 7 is inclined (see FIG. 10), and the attachment position is judged to be poor in terms of the inclination. On the other hand, if the difference is equal to or less than the threshold T3, the label member 7 is hardly inclined, and the attachment position is judged to be good in terms of the inclination.

[0085] The state determination unit 76 determines whether the label member 7 itself is good or bad based on the image obtained by the imaging device 62. This good or bad determination is performed, for example, as follows. First, a binarization process is performed on the obtained image using the first numerical value to obtain a first processed image. In the first processed image, parts of the label member 7 that are suspected of being holes or tears are designated as "1 (light area)," and normal parts of the label member 7 are designated as "0 (dark area)."

[0086] Furthermore, a binarization process is performed on the image obtained by the imaging device 62 using the second numerical value, thereby obtaining a second processed image. In the second processed image, normal parts of the label member 7 and the like are indicated as "1 (light part)," and parts of the label member 7 that may be wrinkled and the tablets 5 and the like are indicated as "0 (dark part)."

[0087] Then, a predetermined masking process is performed on each of the first processed image and the second processed image, so that the tablet 5 and the like are excluded from the inspection target.

[0088] Then, in the first processed image, a process is performed to identify connected components for "1 (bright part)," and the area and length of the connected components (clump parts) are calculated. If the calculated area is greater than the area threshold T5 or the calculated length is greater than the length threshold T6, it is determined that a tear B1 or a hole B2 (see FIG. 11) is present, and the condition of the label member 7 is determined to be poor. On the other hand, if this is not the case, it is determined that no tear B1 or hole B2 is present.

[0089] Furthermore, in the second processed image, a process is performed to identify connected components for "0 (dark area)," and the area and length of the connected components (lump portions) are calculated. If the calculated area is greater than the area threshold T7 or the calculated length is greater than the length threshold T8, it is determined that wrinkles B3 (see FIG. 11) are present, and the condition of the label member 7 is determined to be poor. On the other hand, if this is not the case, it is determined that wrinkles B3 are not present. If it is determined that tears B1, holes B2, or wrinkles B3 are not present, it is determined that the condition of the label member 7 itself is good. Note that the above-mentioned determination method is merely an example, and the determination method may be changed as appropriate.

[0090] In addition, if the label position determination unit 75 or the status determination unit 76 determines that the label is defective, the control device 70 controls the operation of the defective sheet discharge mechanism so that the PTP sheet 1 to which the label member 7 determined to be defective is discharged.

[0091] The result storage unit 77 stores the detection result (that is, the distances L1, L2) obtained by the label relative position detection unit 74, and the pass / fail judgment results by the attachment position pass / fail judgment unit 75 and the state judgment unit .

[0092] The correction control unit 78 performs tasks such as judging whether or not the attachment position of the label material 7 relative to the PTP film 6 needs to be corrected, and controlling the feeding operation of the label material 7 relative to the PTP film 6. Based on the value of an encoder (not shown) of the film receiving roll 20, the correction control unit 78 can accurately grasp where the portion of the PTP film 6 corresponding to the PTP sheet 1 (the planned separation position) is located.

[0093] The correction control unit 78 judges whether or not the attachment position of the label member 7 relative to the PTP film 6 needs to be corrected based on the detection result (distances L1, L2) obtained by the label relative position detection unit 74 as follows. That is, the average value of the distances L1 and L2 is calculated, and the average value is compared with the threshold value T4 for determining whether or not correction is necessary, which is stored in the judgment memory 73. Note that, instead of the average value, either one of the distances L1 or L2 may be used. Then, if the average value is greater than the threshold value T4 for determining whether or not correction is necessary, it is judged that correction of the attachment position of the label member 7 is necessary. On the other hand, if the average value is equal to or less than the threshold value T4, it is judged that correction of the attachment position of the label member 7 is not necessary.

[0094] When it is determined that the attachment position of the label member 7 needs to be corrected, a correction amount a is calculated by subtracting the average value from the ideal distance Lr stored in the memory 73 for determination.

[0095] The correction control unit 78 controls the operation of feeding the label member 7 toward the PTP film 6 as follows. Basically, the operation of the drive rolls 54a and 54b is controlled so that the label member 7 is fed (the release paper 51 is transported) in synchronization with the continuous transport of the PTP film 6. When the sensor 59 detects the label member 7, the operation of the drive rolls 54a and 54b is controlled so that the transport of the release paper 51 is temporarily stopped. When the sensor 59 detects the label member 7, the portion of the PTP film 6 to which the label member 7 is to be attached is located upstream of a predetermined position. This predetermined position is upstream of the position where the label member 7 is to be attached.

[0096] When it is determined that the label member 7 attachment position does not need to be corrected, the operation of the drive rolls 54a, 54b is controlled so that the stop of the transfer of the release paper 51 is released at the timing when the scheduled separation position (a specific position among the scheduled separation positions) reaches the predetermined position. As a result, the delivery of the label member 7 is resumed, and the label member 7 is attached to the PTP film 6 at an appropriate position.

[0097] On the other hand, when it is determined that the application position of the label member 7 needs to be corrected, the operation of the drive rolls 54a, 54b is controlled so that the stop of the transport of the release paper 51 is released at the timing when the planned separation position reaches a position shifted from the predetermined position by the correction amount a along the conveying direction of the PTP film 6. This causes the application position of the label member 7 relative to the PTP film 6 to be corrected by the correction amount a. As a result, the distances L1, L2 of the applied label member 7 become closer to the ideal distance Lr, and the deviation of the application position is corrected. The above-mentioned control for correcting the application position is continued until it is determined that the application position needs to be corrected again.

[0098] As described above in detail, according to this embodiment, the application position of the label member 7 is not detected after the PTP film 6 is cut off, but the position of the label member 7 is detected before the label member 7 reaches the sheet punching device 37, and based on the detection result, the application position of the label member 7 is judged to be good or bad, and the application position of the label member 7 to be applied thereafter is corrected. Therefore, even if the application position of the label member 7 is shifted from the planned cut-off position (planned punching position) of the PTP film 6 due to some defect, it is possible to detect the defect or correct the application position before the label member 7 reaches the sheet punching device 37. This makes it possible to reduce the amount of PTP film 6 (PTP sheet 1) that must be discarded due to a defective application position, thereby reducing production costs.

[0099] In addition, since the quality of the attachment position can be automatically judged and the attachment position can be corrected before the PTP film 6 is cut off, it becomes very easy to change the type of PTP sheet 1 produced by the PTP packaging machine 10. Furthermore, it is possible to more reliably prevent a large amount of materials from being wasted during the operation.

[0100] In addition, the sheet punching device 37 separates the PTP film 6 based on the "pocket portion 2", and the detected relative position of the label material 7 is relative to the "pocket portion 2" of the container film 3. As a result, the detected relative position of the label material 7 is based on the planned separation position (planned punching position). Therefore, the planned separation position can be used as a reference to perform corrections and pass / fail judgments on the attachment position, and the accuracy of the corrections and pass / fail judgments can be improved.

[0101] In addition, since the pocket portion 2, which is always provided in the container film 3, is used as the reference portion, it is possible to improve the convenience in detecting the relative position of the label member 7.

[0102] Furthermore, the label relative position detection unit 74 detects the relative position of the label member 7 based on an image (one image) including the reference portion (pocket portion 2) of the container film 3 and the label member 7. Therefore, the relative position can be detected easily and accurately. This reduces the processing load and enables more accurate judgment of the quality and correction of the attachment position.

[0103] In addition, by using the X-ray irradiation device 61 or the like, it is possible to easily obtain an image (X-ray transmission image) showing the reference portion (pocket portion 2) of the container film 3 and the label member 7 even when a metal such as aluminum is used for the container film 3 or the cover film 4. This makes it possible to detect the relative position of the label member 7 more easily and more accurately.

[0104] Furthermore, the label relative position detection unit 74 detects a plurality of relative positions of the label material 7 with respect to a plurality of pocket portions 2 (reference portions) provided at different positions along the width direction of the PTP film 6. Then, based on the plurality of detected relative positions, a pass / fail judgment is made regarding the attachment position of the label material 7. This makes it possible to judge whether or not the label material 7 is tilted, thereby further improving the inspection accuracy regarding the attachment position of the label material 7.

[0105] In addition, in this embodiment, the relative position of the label material 7 can be detected immediately downstream of the position where the label material 7 is attached, so that the number of PTP films 6 (PTP sheets 1) that must be discarded due to improper attachment position can be significantly reduced. As a result, production costs can be reduced very effectively. It is also possible to significantly reduce the waste of materials involved in changing the type of PTP sheet 1.

[0106] Additionally, the condition of the label member 7 itself can be judged to be good or bad by the condition judging section 76. Therefore, the quality of the PTP sheet 1 to which the label member 7 is affixed can be improved more reliably.

[0107] Furthermore, since the quality of the state of the label member 7 is judged based on an image for detecting the relative position of the label member 7, there is no need to obtain a separate image for this quality judgment, or to provide a device for obtaining a separate image (such as a camera). This makes it possible to prevent the PTP packaging machine 10 from becoming larger and more complicated, and ultimately to suppress increases in costs related to the manufacture and maintenance of the PTP packaging machine 10.

[0108] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0109] (a) In the above embodiment, the X-ray irradiation device 61 and the imaging device 62 are provided immediately downstream of the position where the label member 7 is affixed by the label attachment device 50 along the transport path of the PTP film 6. However, the installation positions of the X-ray irradiation device 61 and the imaging device 62 may be appropriately changed within a range along the transport path of the PTP film 6 between the position where the label attachment device 50 affixes the label member 7 and the position where the sheet punching device 37 cuts off the PTP film 6. Therefore, for example, the X-ray irradiation device 61 and the imaging device 62 may be provided downstream of the marking device 34 along the transport path of the PTP film 6.

[0110] (b) In the above embodiment, the reference portion of the container film 3 is set to the pocket portion 2, but the reference portion may be set to a portion other than the pocket portion 2. Therefore, the reference portion may be, for example, a mark formed on the container film 3 and having a certain positional relationship with respect to the pocket portion 2.

[0111] (c) In the above embodiment, the correction control unit 78 is configured to correct the attachment position of the label member 7 by canceling the stop of the transfer of the release paper 51 at the timing when the planned separation position reaches a position shifted by the correction amount a from the predetermined position along the transport direction of the PTP film 6. In contrast, the correction control unit 78 may correct the attachment position of the label member 7 by shifting the temporary stop position of the release paper 51 by the correction amount a when the label member 7 is detected by the sensor 59 at a stage before the planned separation position reaches the predetermined position. In other words, the correction of the attachment position of the label member 7 may be performed by adjusting the timing at which the temporarily stopped release paper 51 (label member 7) starts moving, or by adjusting the temporary stop position of the release paper 51 (label member 7).

[0112] (d) In the above embodiment, the label relative position detection unit 74 is configured to detect two distances L1, L2 along the conveying direction of the PTP film 6 as the relative position of the label member 7 with respect to a reference portion of the container film 3, but it may also be configured to detect one or more distances.

[0113] The label relative position detection unit 74 may detect, as the relative position, a distance (for example, the distance between the pocket portion 2 and the short side of the label member 7) along a direction perpendicular to the transport direction of the PTP film 6 (i.e., the width direction of the PTP film 6).The attachment position quality determination unit 75 may be configured to determine whether the attachment position of the label member 7 along the direction perpendicular to the transport direction is good or bad based on the detection result.

[0114] (e) The relative position of the label member 7 is not limited to the distance from the reference portion of the container film 3 to the outer edge (short side or long side) of the label member 7, but may be the distance from the reference portion to the center or center of gravity of the label member 7, etc.

[0115] Furthermore, an element other than distance may be used as the relative position of the label member 7. For example, as shown in Fig. 12, the area of ​​the label member 7 relative to a reference portion K of the container film 3 that is at a certain position from the pocket portion 2 (for example, a position including the outer edge of the properly applied label member 7) may be used as the relative position. In this case, the quality of the application position can be determined based on the area. Of course, multiple reference portions K may be set, and the area (multiple areas) of the label member 7 relative to each reference portion K may be used as the relative position.

[0116] (f) In the above embodiment, the system is configured to perform both a quality judgment on the attachment position of the label member 7 and a correction of the attachment position, but the system may be configured to perform only one of the two. For example, the system may be configured to perform only a quality judgment on the attachment position of the label member 7.

[0117] (g) In the above embodiment, the state determination unit 76 is configured to determine the presence or absence of tears, holes, or wrinkles in the label member 7, but it may also determine the quality of other items (for example, the attachment of foreign matter, the positional relationship of the flap piece 7b with respect to the fixed piece 7a, etc.). Also, the state determination unit 76 may not be configured to determine the quality of the label member 7 itself.

[0118] Furthermore, a configuration may be adopted in which only at least one of the following is performed: determining whether the application position of the label member 7 is good or bad, correcting the application position, and determining whether the label member 7 itself is good or bad.

[0119] (h) In the above embodiment, the label member 7 is attached to the PTP film 6 between the film receiving roll 20 and the tension roll 27, but the position where the label member 7 is attached is not limited to this. The position where the label member 7 is attached can be changed as appropriate as long as it is downstream of the position where the cover film 4 is attached to the container film 3 by the film receiving roll 20 and the heating roll 25 and upstream of the position where the PTP film 6 is punched by the sheet punching device 37.

[0120] (i) The configuration of the label application device 50 is not limited to that described in the above embodiment. Therefore, for example, instead of the reversing member 55 having a triangular cross section, a reversing member having a circular cross section or a rotatable roll-shaped reversing member may be used.

[0121] (j) In the above embodiment, X-rays are irradiated from the X-ray irradiator 61, and the relative position of the label member 7 with respect to the reference portion (pocket portion 2) of the container film 3 is detected by an X-ray transmission image based on the X-rays transmitted through the PTP film 6. In contrast, without using an X-ray irradiator, for example, a pair of imaging devices may be installed sandwiching the PTP film 6, and the relative position may be detected based on a pair of images (an image obtained by imaging the container film 3 side and an image obtained by imaging the label member 7 side) obtained by these imaging devices. In this case, an irradiation means may be provided that irradiates a predetermined light (e.g., infrared light, etc.) toward the object to be imaged by the imaging device.

[0122] (k) In the above embodiment, the label member 7 is formed from a paper material, but the material of the label member 7 is not limited to this and may be other materials, such as a film base material made from a resin.

[0123] Furthermore, the label member 7 is not limited to the two-fold type of the above embodiment, but may be, for example, a single sheet type without creases, or a booklet type folded in half that includes an instruction manual or the like.

[0124] Furthermore, in the label member 7 of the above embodiment, the removable portion 7c is formed by forming perforations along the peripheral shape of each pocket portion 2, but instead of this, the removable portion may be formed by forming a cut (e.g., a cross-shaped cut) or an opening corresponding to the pocket portion 2. Also, the removable portion 7c may be omitted.

[0125] (l) The configuration of the PTP sheet 1 given in the above embodiment is one example, and for example, the number and arrangement of the pockets 2 of the PTP sheet 1 may be changed as appropriate.

[0126] (m) In the above embodiment, the PTP film 6 is configured with a number of pockets 2 corresponding to one sheet arranged along its width direction, but the configuration of the PTP film 6 is not limited to this. For example, the PTP film 6 may be configured with a number of pockets 2 corresponding to two or more sheets arranged along its width direction. Also, in accordance with the configuration of the PTP film 6, a release paper 51 on which label members 7 are attached in a state of being arranged in multiple rows may be used.

[0127] (n) In the above embodiment, the content is described as a tablet 5, but the type, shape, etc. of the content are not particularly limited, and the content may, for example, be food, electronic components, etc. [Explanation of symbols]

[0128] 1... PTP sheet (blister sheet), 2... pocket portion, 3... container film, 4... cover film, 5... tablet (contents), 6... PTP film (blister film), 7... label member, 10... PTP packaging machine (blister packaging machine), 20... film receiving roll (attaching means), 25... heating roll (attaching means), 50... label application device (label application means), 61... X-ray irradiation device (X-ray irradiation means), 62... imaging device (imaging means), 74... label relative position detection unit (label relative position detection means), 76... status determination unit (status determination means).

Claims

1. A blister packaging machine for producing a blister sheet in which a cover film is attached to a container film so as to close a pocket portion formed in the container film and a predetermined label member is affixed to the cover film, the machine comprising: an attachment means for attaching the strip-shaped cover film to the strip-shaped container film having the contents accommodated in the pocket portion; a label attachment means for attaching the label member to a strip-shaped blister film formed by attaching the cover film to the container film; a separating means for separating the blister film to which the label member is attached, using the pocket portion as a reference to obtain the blister sheet; a label relative position detection means for detecting a relative position of the label member with respect to a predetermined reference portion of the container film between a position where the label member is attached by the label attachment means and a position where the blister film is cut by the cutting means along the conveying path of the blister film, a label relative position detection unit that detects the relative position of the label member relative to the blister film and / or determines whether the label member is attached to the blister film or not based on the relative position detected by the label relative position detection unit; A blister packaging machine, characterized in that the reference portion is the pocket portion.

2. an imaging means for imaging the blister film to which the label member is attached, between a position where the label attachment means attaches the label member and a position where the cutting means cuts off the blister film, along a conveyance path of the blister film; the label relative position detection means is configured to detect a relative position of the label member with respect to the reference portion based on the image obtained by the imaging means, 2. The blister packaging machine according to claim 1, wherein the image obtained by the imaging means includes the reference portion and the label member.

3. an X-ray irradiation means arranged to face the imaging means across the blister film and irradiate the blister film with X-rays; 3. The blister packaging machine according to claim 2, wherein the label relative position detection means is configured to detect the relative position of the label material with respect to the reference portion by an X-ray transmission image based on X-rays transmitted through the blister film obtained by the imaging means.

4. 4. The blister packaging machine according to claim 2, further comprising a condition determining means for determining whether a condition of the label member itself is good or bad based on the image obtained by the imaging means.

5. 5. The blister packaging machine according to claim 2, wherein the imaging means is provided along a transport path of the blister film, immediately downstream of a position where the label attachment means attaches the label material.

6. the label relative position detection means is configured to detect a relative position of the label member with respect to each of a plurality of pocket portions provided at different positions along the width direction of the blister film, 6. A blister packaging machine according to claim 1, further comprising a label relative position detection means for detecting a position of the label member relative to the blister film, the label relative position detection means detecting a position of the label member relative to the blister film.

7. A method for producing a blister sheet, comprising the steps of: attaching a cover film to a container film so as to close a pocket portion formed in the container film and attaching a predetermined label member to the cover film, the method comprising the steps of: a step of attaching the strip-shaped cover film to the strip-shaped container film having the contents accommodated in the pocket portion; a label attachment step of attaching the label member to a band-shaped blister film formed by attaching the cover film to the container film; a cutting step of cutting the blister film to which the label member is attached, based on the pocket portion, to obtain the blister sheet; a label relative position detection step of detecting a relative position of the label member with respect to a predetermined reference portion of the container film between a position where the label member is attached in the label attachment step and a position where the blister film is separated in the separation step along a transport path of the blister film, performing at least one of correcting an attachment position of the label member with respect to the blister film and determining whether the attachment position is good or bad based on the relative position detected in the label relative position detection step; A method for manufacturing a blister sheet, wherein the reference portion is the pocket portion.

Images