JP5159835B2 - PTP sheet manufacturing equipment - Google Patents

Description

  The present invention relates to a PTP sheet manufacturing apparatus for manufacturing a PTP sheet containing contents such as tablets.

  In general, a PTP sheet that contains contents such as tablets includes a container film in which a pocket part filled with the contents is formed, and a cover that is attached to the container film so as to seal the opening side of the pocket part. It consists of a film.

  Conventionally, in an apparatus for producing a PTP sheet, a raw film of a container film formed in a strip shape is set in a state of being wound in a roll shape on the most upstream side. Then, the strip-shaped container film drawn out from here is subjected to PTP through a process of forming a pocket part, a process of filling contents in the pocket part, a process of attaching a cover film, a process of punching out each sheet unit, etc. Processed into a sheet.

  In the process of attaching the cover film, the container film and the cover film pass in a heated and pressed state between the film receiving roll that conveys the container film and the seal roll that is pressed against the film receiving roll. A cover film is stuck to the container film, and the pocket portion is closed.

  Here, a large number of pocket receiving recesses corresponding to the pocket portions of the container film are formed on the outer peripheral surface of the film receiving roll, and the container film is received in such a manner that its own pocket portions fit into the pocket receiving recesses. It is hung on a roll. In this state, by rotating the film receiving roll, the container film is conveyed so that the pocket portion is hooked by the pocket receiving recess (see, for example, Patent Document 1).

JP 2007-69966 A

  However, in the conventional cylindrical film receiving roll 91 as shown in FIG. 7A, the container film 93 is hung on the film receiving roll 91 when the pocket portion 95 of the container film 93 is relatively large. 7 (b), the container film 93 is not appropriately curved along the arc shape of the outer peripheral surface of the film receiving roll 91, and the general film portion (especially around the pocket portion 95) is the film. It floats from the outer peripheral surface of the receiving roll 91, bends, or the like. When the seal roll 98 is pressed in this state, there is a possibility that various problems such as collapse of the pocket portion 95, bending of the film general portion between the pocket portions 95, and wrinkles on the attached cover film 97 may occur. is there. As a result, the occurrence of product defects may increase.

  In general, in the PTP sheet, the container film is formed of a resin material such as PP (polypropylene) and the cover film is formed of a metal material such as aluminum. However, in recent years, the light shielding property, moisture resistance, and the like are improved. From such a viewpoint, even the container film can be formed of aluminum or the like. Aluminum or the like has poor processability (ductility) compared to a resin material, and it is necessary to design a relatively large pocket portion. In addition, aluminum and the like are not elastic and easily deform plastically as compared with a resin material, and therefore, when deformed, it is difficult to restore the original shape. As a result, there is a possibility that the above-mentioned defect appears more remarkably.

  The present invention has been made in view of the above circumstances, and one of the main objectives of the present invention is to provide a PTP sheet manufacturing apparatus capable of reducing the occurrence of defective products when manufacturing a PTP sheet.

  Hereinafter, each means suitable for solving the above-described problem will be described separately. In addition, the effect specific to the means to respond | corresponds as needed is added.

Means 1. A pocket portion forming means for forming a pocket portion for accommodating the contents with respect to the belt-like container film,
Filling means for filling the pocket portion with the contents;
Sealing means for attaching a band-shaped cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion,
In a PTP sheet manufacturing apparatus comprising sheet punching means for punching a strip-shaped PTP film with the cover film attached to the container film in units of PTP sheets,
The sealing means includes
A pocket receiving recess capable of accommodating the pocket portion of the container film, a film receiving roll capable of conveying the container film by its own rotation while hooking the pocket portion by the pocket receiving recess, and a pressure contact with the film receiving roll A heating roll that can be heated, and is configured to attach the cover film to the container film by feeding the two films between the two rolls and heating and press-contacting them,
The film receiving roll is
The outer peripheral surface has a substantially polygonal column shape having a plurality of flat surfaces orthogonal to the radial direction, and in each of the flat surfaces, the pocket receiving recess is formed,
The PTP sheet manufacturing apparatus characterized in that the periphery of each pocket receiving recess has a flat surface shape .

  The “substantially polygonal column shape” here includes not only a perfect polygonal column shape with a plurality of corners but also those with rounded corners.

  According to said means 1, the pocket part for accommodating the contents is formed in the band-shaped container film by the pocket part forming means, and the cover film is attached in a sealed state so as to close the pocket part by the sealing means. As a result, a band-shaped PTP film is produced. The sealing means includes a film receiving roll having a pocket receiving recess capable of accommodating the pocket portion, and a heating seal roll, and the cover film is attached after the contents are accommodated in the pocket portion. The container film and the cover film are heated and pressed with both rolls. Then, the PTP sheet is punched from the PTP film by the punching means.

  And according to this means, the film receiving roll has a substantially polygonal column shape having a plurality of flat surfaces perpendicular to the radial direction on the outer peripheral surface thereof, and has the pocket receiving recesses on each flat surface. It has become. Thereby, the said container film can be appropriately hooked on a film receiving roll, without applying excessive stress to the pocket part of a container film, and the film general part of the circumference | surroundings. As a result, since the film general part around the pocket part can be sealed in a flat state, various problems such as collapse of the pocket part, bending of the film general part between the pocket parts, wrinkles on the attached cover film, etc. Occurrence can be suppressed.

  In order to suppress the above-mentioned problems, it may be possible to adopt an apparatus having a configuration in which a container film or the like is conveyed straight without using various rolls. However, in such a configuration, the entire apparatus becomes large. In addition, there is a concern that the entire line must be intermittently fed in accordance with pocket molding or the like, which hinders an increase in production speed. Although it is conceivable to increase the diameter of the film receiving roll to prevent the pocket portion from being crushed, there is also a concern that the apparatus will be enlarged. In this regard, according to the present means, it is possible to increase the production speed and suppress the enlargement of the apparatus by the continuous feeding operation using the roll.

  Furthermore, when the container film is made of a resin material, the container film is heated when the pocket portion is formed, and curling may occur due to subsequent heat shrinkage, so that early cooling by contact with various rolls and the like is necessary. Become. That is, in the apparatus which conveys a film without using the various rolls described above, it is difficult to produce a PTP sheet in which the container film is made of a resin material. In this respect, according to this means, it is possible to appropriately cope with any case where the container film is made of a resin material or aluminum by using a roll.

  Mean 2. The length of each flat surface in the circumferential direction of the film receiving roll is a length corresponding to n pitches (n is a natural number of 1 or more) of the sheet formation pitch of the PTP sheet in the longitudinal direction of the PTP film. The apparatus for producing a PTP sheet according to means 1, characterized in that

  According to the means 2, since each flat surface of the film receiving roll is formed in a range corresponding to n sheets of the PTP sheet, the entire area of each PTP sheet can be sealed in a flat state. 1 and the like can be made more reliable in units of PTP sheets.

  In particular, when the container film is made of a resin material, the container film is heated at the time of forming the pocket portion. Therefore, after the container film and the cover film are bonded, curling may occur due to a difference in the heat shrinkage ratio or the like. There is. In this regard, according to the present means, the occurrence of such curling can be suppressed.

  In addition, about the part corresponding to the corner | angular part (non-flat part) of a film receiving roll, although there exists a possibility that bending may generate | occur | produce in a PTP film, since the said bending part becomes a boundary part of PTP sheets, at the time of sheet | seat punching If the PTP sheet is punched out in a range excluding the bent portion, it is possible to obtain a PTP sheet having no warpage as a whole.

  Further, by using the bent portion as a mark, the subsequent process (for example, a sheet punching process) can be performed more accurately.

  Means 3. The PTP sheet manufacturing apparatus according to means 1 or 2, wherein the seal roll has a cylindrical shape.

  According to the means 3, the container film and the cover film are sealed by press-contacting the substantially polygonal column-shaped film receiving roll and the cylindrical seal roll. By adopting such a configuration, for example, both the film receiving roll and the seal roll have a polygonal column shape, and the set of each roll is set rather than the configuration in which the container film and the cover film are sealed while pressing the flat surfaces of the both. Adhering errors can be easily absorbed, and stable sealing can be performed with more uniform pressure. Moreover, it is possible to deal with various varieties only by exchanging only the film receiving roll side without exchanging the seal roll side, and the versatility can be improved.

  Means 4. The PTP sheet manufacturing apparatus according to any one of means 1 to 3, wherein the pocket receiving recess is formed so that an inner peripheral side surface thereof is orthogonal to the flat surface.

  According to the means 4, the inner surface of the pocket receiving recess is formed so as to be orthogonal to the flat surface, so that the flat surface and the pocket receiver in the cross section of the film receiving roll orthogonal to the rotation axis of the film receiving roll. The angle α formed by the straight line in the radial direction connecting the boundary between the concave portion and the rotation center of the film receiving roll and the flat surface is smaller than 90 °.

  Conventionally, generally, the pocket receiving concave portion has an inner peripheral side surface formed along the radial direction of the film receiving roll. That is, the inner peripheral side surface of the pocket receiving recess was perpendicular to the rotation direction of the film receiving roll. For this reason, when the film F is transported, the stress F is applied to the pocket portion in the roll rotation direction. According to this means, the load applied to the pocket portion can be reduced by F × sin α. As a result, the occurrence of crushing deformation of the pocket portion can be suppressed.

  Means 5. The PTP sheet manufacturing apparatus according to any one of means 1 to 4, wherein the container film and the cover film are formed using aluminum as a main material.

  Here, “formed with aluminum as a main material” means not only the case of being formed of aluminum alone, but also includes an aluminum laminate film in which a resin film layer is interposed.

  In addition, as described in the above-described problem, the defects such as the crushing deformation of the pocket portion are mainly composed of aluminum rather than the case where the container film is made of a resin material such as polypropylene (PP) or polyvinyl chloride (PVC). It tends to occur in the case of materials. This is presumably because aluminum is more easily plastically deformed than the resin material, and it is difficult to restore the original shape once it is deformed by stress.

  Therefore, the effects of the means 1 and the like are more effective under the configuration of the means.

(A) is a perspective view which shows a PTP sheet, (b) is a perspective view which shows a PTP film, (c) is a partial expanded sectional view of a PTP sheet. It is the schematic for demonstrating the whole structure of a PTP packaging machine. It is a schematic diagram which shows schematic structure of a sealing device. It is a side view which shows a PTP film. (A) is the elements on larger scale of the film receiving roll for demonstrating the structure of a pocket part, (b) is the elements on larger scale of the conventional film receiving roll for demonstrating the structure of the conventional pocket part. is there. (A), (b) is a schematic diagram which shows schematic structure of the sealing device which concerns on another embodiment. (A) is a schematic diagram which shows schematic structure of the conventional sealing apparatus, (b) is a partial expanded sectional view which shows the state of the container film hung on the conventional film receiving roll.

  Hereinafter, an embodiment will be described with reference to the drawings.

  As shown in FIGS. 1A to 1C, the PTP sheet 1 is attached to the container film 3 having a plurality of pocket portions 2 and the back side of the container film 3 so as to close the pocket portions 2. And a cover film 4. Both the container film 3 and the cover film 4 in this embodiment are formed of an aluminum laminate film.

  The PTP sheet 1 is manufactured into a sheet shape by punching a strip-shaped PTP film 6 (see FIG. 1B) formed from the container film 3 and the cover film 4.

  As shown in FIG.1 (c), each pocket part 2 accommodates one tablet 5 as the contents.

  Next, the outline of the PTP packaging machine 8 as a PTP sheet manufacturing apparatus for manufacturing the PTP sheet 1 will be described.

  As shown in FIG. 2, on the uppermost stream side of the PTP packaging machine 8, the raw material of the strip-shaped container film 3 is wound in a roll shape.

  In the PTP wrapping machine 8, the container film 3 wound in a roll shape is intermittently transferred, and along the transfer path of the container film 3, a pocket part forming device as a pocket part forming means 14 is arranged.

  The pocket portion 2 is formed on the container film 3 by the pocket portion forming device 14. The pocket portion 2 is formed at intervals between the transfer operations of the container film 3 by cold working.

  Furthermore, along the transfer path of the container film 3 in which the pocket portion 2 is formed, a tablet loading device 16 as a filling means, an inspection device 17, and a sealing device 10 as a sealing means are arranged.

  The tablet loading device 16 freely drops the tablet 5 by opening the shutter at predetermined intervals, and the tablet 5 is loaded into each pocket portion 2 in accordance with the shutter opening operation.

  The inspection device 17 is for inspecting whether or not the tablets 5 are reliably filled in the pocket portions 2, whether or not there are abnormalities in the tablets 5, and whether or not foreign matter is mixed. The inspection device 17 performs an inspection from the opening side of the pocket portion 2.

  Moreover, the raw material of the cover film 4 formed in the strip | belt shape is wound by the roll shape in the most upstream side.

  The drawing end of the cover film 4 wound in a roll shape is guided toward the sealing device 10. The sealing device 10 includes a film receiving roll 18 and a sealing roll 19.

  A seal roll 19 can be pressed against the film receiving roll (feeding roll) 18, and the container film 3 and the cover film 4 are fed between the rolls 18 and 19. Then, the container film 3 and the cover film 4 pass between the rolls 18 and 19 in a heated and pressed state, so that the cover film 4 is adhered to the back side of the container film 3 and the pocket portion 2 is closed with the cover film 4. Can be removed. Thereby, the PTP film 6 with which the tablet 5 was filled in each pocket part 2 is manufactured.

  Downstream of the sealing device 10, a perforation forming device 22, a marking device 23, and a sheet punching device 24 are sequentially arranged along the transfer path of the PTP film 6. The perforation forming device 22 has a function of forming perforations at predetermined positions on the PTP film 6. The marking device 23 has a function of attaching a stamp indicating identification information such as a lot number to a predetermined position of the PTP film 6. The sheet punching device 24 has a function as a sheet punching unit that punches the PTP film 6 into one PTP sheet.

  A scrap hopper 26 for storing the end material 25 from the sheet punching device 24 is provided on the downstream side of the sheet punching device 24. In addition, a conveyor 28 for transferring the punched PTP sheet 1 is provided below the sheet punching device 24. The punched PTP sheet 1 is transferred to a finished product hopper 29 by the conveyor 28. After that, the PTP sheets 1 accommodated in the finished product hopper 29 are set so that two pockets 2 face each other and the pocket portions 2 face each other, and a plurality of sets are accumulated and stacked. Eventually, they are guided to a band (bundling) process or a bag making process and packed in a box. However, when a defective product is determined by the inspection device 17, the PTP sheet 1 that has been determined to be defective is separately discharged by a defective sheet discharge mechanism (not shown).

  The container film 3 and the PTP film 6 are conveyed through a plurality of feed rolls 18, 30, 31, 32, 34, 36, 37, 38 as shown in FIG. A pocket receiving recess 43 corresponding to the pocket portion 2 of the container film 3 or the like is formed on the outer peripheral surface of the feed roll 18 or the like (see FIG. 3). The formation interval of the pocket receiving recesses 43 in the circumferential direction of the feed roll 18 and the like and the formation interval of the pocket portions 2 in the longitudinal direction of the container film 3 and the like are equal. As a result, the feed roll 18 and the like are rotated by a predetermined driving means while accommodating the pocket portion 2 in the pocket receiving recess 43, so that the container film 3 and the like can be transferred without being crushed. Is called.

  However, in the present embodiment, the feed rolls 18 and 34 continuously feed (continuously rotate), whereas the other feed rolls 30 to 32 and 36 to 38 have the pocket portion forming device 14 and the perforation forming device 22. The intermittent feeding operation (intermittent rotation) is performed in accordance with the operations of the marking device 23, the sheet punching device 24, and the like.

  For this reason, tension rolls 33 and 35 are provided between the feed rolls 32 and 34 and between the feed rolls 18 and 36, respectively, and the conveyance operation between the feed rolls 32 and 34 and between the feed rolls 18 and 36 is performed. The bending of the container film 3 or the like due to the difference is controlled, and the container film 3 or the like is always kept in a tension state.

  Although the outline of the PTP packaging machine 8 is as described above, the configuration of the sealing device 10 will be described below in more detail with reference to FIG.

  As described above, the sealing device 10 includes the film receiving roll 18 and the sealing roll 19.

  The film receiving roll 18 of the present embodiment has a substantially octagonal prism shape in which the cross-sectional shape orthogonal to the rotation axis 18a is a substantially regular octagonal shape. Thus, eight flat surfaces 41 are formed on the outer peripheral surface of the film receiving roll 18 so as to be orthogonal to the radial direction and along the direction of the rotation axis 18a.

  Each flat surface 41 has a length S (see FIG. 3) in the circumferential direction of the film receiving roll 18 corresponding to the sheet formation pitch P (see FIG. 4) of the PTP sheet 1. Accordingly, two rows of pocket receiving recesses 43 that can accommodate the pocket portions 2 such as the container film 3 are formed on each flat surface 41.

  The film receiving roll 18 is rotationally driven by a predetermined motor, and continuously feeds the container film 3 and the like by its own rotation while hooking the pocket portion 2 such as the container film 3 by the pocket receiving recess 43.

  Further, as shown in FIG. 5A, the pocket receiving recess 43 is formed so that the inner peripheral side surface 43 a thereof is orthogonal to the flat surface 41. Thereby, in the cross-sectional part of the film receiving roll 18 orthogonal to the rotation axis 18 a of the film receiving roll 18, the radius connecting the boundary portion A between the flat surface 41 and the pocket receiving recess 43 and the rotation center O of the film receiving roll 18. An angle α formed by the straight line L in the direction and the flat surface 41 is smaller than 90 °.

  As shown in FIG. 5 (b), in the conventional film receiving roll 70, the inner peripheral side surface 71 a of the pocket receiving recess 71 is formed along the radial direction of the film receiving roll 70. That is, the inner peripheral side surface 71 a of the pocket receiving recess 71 is perpendicular to the rotation direction K of the film receiving roll 70. For this reason, when the film is conveyed, stress F is applied in the roll rotation direction K from the inner peripheral side surface 71a of the pocket receiving recess 71 to the pocket portion 2 of the container film 3. According to the configuration of this embodiment, the pocket portion 2 can be reduced by F × sin α. As a result, the occurrence of crushing deformation or the like of the pocket portion 2 can be suppressed.

  Returning to the description of FIG. 3, the seal roll 19 has a cylindrical shape in which the cross-sectional shape orthogonal to the rotation shaft 19 a is circular. The seal roll 19 is configured to be heated to a predetermined temperature by a predetermined heating means. Further, in order to realize a strong seal, a lattice-like mesh formed in a slightly convex shape is formed on the outer peripheral surface of the seal roll 19 (not shown).

  The seal roll 19 is rotatably supported at one end of a predetermined arm 51. The arm 51 is provided so as to be tiltable about the rotation shaft 52 as a fulcrum. On the other end side of the arm 51, an urging means 53 constituted by a cylinder, a spring or the like is provided. Thereby, the seal roll 19 is always pressed to the film receiving roll 18 side. And the seal roll 19 rotates following the movement of the film receiving roll 18 (cover film 4).

  Under such a configuration, as described above, the container film 3 and the cover film 4 are fed between the rolls 18 and 19, and the films 3 and 4 pass between the rolls 18 and 19 in a heated and pressed state. Thus, the cover film 4 is adhered to the back side of the container film 3.

  As shown in FIG. 4, in the PTP film 6, a slightly bent portion 6 a is generated at a location corresponding to the corner 45 (see FIG. 3) of the film receiving roll 18, but the bent portion 6 a Since it becomes a boundary part between the PTP sheets 1, if the PTP sheet 1 is punched in a range W excluding the bent part 6a when punching the sheet so that the bent part 6a becomes the end material 25, the whole is warped. It is possible to obtain the PTP sheet 1 without any material.

  As described above in detail, according to the present embodiment, the film receiving roll 18 has a substantially octagonal prism shape having a plurality of flat surfaces 41 orthogonal to the radial direction on the outer peripheral surface thereof. The pocket receiving recess 43 is provided. Thereby, the said container film 3 can be appropriately hooked on the film receiving roll 18, without applying an excessive stress to the pocket part 2 of the container film 3, and the film general part of the circumference | surroundings. As a result, since the film general part around the pocket part 2 can be sealed in a flat state, the pocket part 2 is crushed, the film general part is bent between the pocket parts 2, and the attached cover film 4 is wrinkled. The occurrence of various problems can be suppressed.

  In addition, according to the present embodiment, the continuous feeding operation using the film receiving roll 18 and the like can increase the production speed and suppress the enlargement of the apparatus.

  Furthermore, in this embodiment, since the seal roll 19 has a cylindrical shape, for example, both the film receiving roll 18 and the seal roll 19 have a polygonal column shape, and the container film 3 and the cover film are pressed while pressing the flat surfaces of the both. As compared with the configuration in which 4 is sealed, it is easier to absorb assembly errors of the rolls 18 and 19, and stable sealing can be performed with a more uniform pressure. Further, by replacing only the film receiving roll 18 side without replacing the seal roll 19 side, it is possible to deal with various varieties and improve versatility.

  In addition, each flat surface 41 of the film receiving roll 18 has a length S corresponding to the sheet forming pitch P of the PTP sheet 1 in the circumferential direction of the film receiving roll 18. The entire region can be sealed in a flat state, and the above-described effects can be ensured with one PTP sheet unit.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the case where the content is the tablet 5 is specified, but the type, shape, and the like of the content are not particularly limited. For example, food, electronic parts, and the like are used as the content. The structure filled may be sufficient. Of course, the shape, size, and the like of the pocket portion 2 formed corresponding to these contents are not limited to the above embodiment.

  (B) The material of each film 3 and 4 is not limited to the metal material which made aluminum the main material, You may employ | adopt the thing of other materials, such as a resin material. Even when the container film 3 is formed of a resin material such as PP or PVC, when the shape of the pocket portion 2 is relatively large, the above-described various problems such as collapse of the pocket portion 2 may occur. .

  (C) In the above embodiment, the film receiving roll 18 has a substantially octagonal prism shape. However, the present invention is not limited to this, and any other configuration may be adopted as long as it has a polygonal column shape with a flat surface. Moreover, you may employ | adopt the structure with which the corner | angular part 45 was rounded instead of the structure where the corner | angular part 45 of the film receiving roll 18 was sharp. If it does in this way, generation | occurrence | production of the said bending part 6a in the PTP film 6 can be reduced.

  (D) In the above embodiment, the inner peripheral side surface 43 a of the pocket receiving recess 43 is formed so as to be orthogonal to the flat surface 41. For example, the inner peripheral side surface 43 a of the pocket receiving recess 43 may be formed along the radial direction of the film receiving roll 18 and inclined with respect to the flat surface 41.

  (E) It is good also as a structure provided with the heating apparatus in the upstream of the pocket part formation apparatus 14. FIG. By adopting such a configuration, the PTP packaging machine 8 can be manufactured not only with the container film 3 made of aluminum but also with a relatively rigid and predetermined thermoplastic resin material such as PP or PVC. The resulting packaging machine (combined machine). Of course, when forming the container film 3 made of aluminum, the heating device is not used.

  (F) In the above embodiment, the length S of each flat surface 41 in the circumferential direction of the film receiving roll 18 corresponds to one pitch of the sheet formation pitch P of the PTP sheet 1 in the longitudinal direction of the PTP film 6. However, the formation range of the flat surface 41 is not limited to this. For example, the length S of each flat surface 41 may be a length corresponding to n pitches (n is a natural number of 2 or more) of the sheet formation pitch P of the PTP sheet 1.

  Further, the flat surface is not corresponding to the PTP sheet unit but corresponds to each pocket receiving recess 43 in the circumferential direction of the film receiving roll 18 (a range including the pocket receiving recesses 43 for one row in the circumferential direction of the film receiving roll 18). It may be formed. However, in the case where the container film 3 is made of a resin material, the container film 3 and the cover film 4 are bonded to each other due to the heating at the time of forming the pocket portion 2, and then curled due to the difference in the heat shrinkage ratio thereof. Therefore, the length S of each flat surface 41 is preferably set to a length corresponding to n pitches (n is a natural number of 1 or more) of the sheet formation pitch P of the PTP sheet 1.

  (G) In the above-described embodiment, only one PTP sheet 1 is formed in the width direction of the PTP film 6 (the direction of the rotation axis 18a of the film receiving roll 18). A plurality of PTP sheets 1 may be formed in the width direction of the PTP film 6. Of course, in such a case, the length of each flat surface 41 in the direction of the rotation axis 18a of the film receiving roll 18 also has a length corresponding to a plurality of PTP sheets 1 (width of the PTP film 6).

  (H) In the above embodiment, the angle formed between the container film 3 conveyed on the upstream side of the film receiving roll 18 and the PTP film 6 conveyed on the downstream side is a right angle. As shown in FIG. 6A, the angle β formed by the container film 3 conveyed on the upstream side of the film receiving roll 18 and the PTP film 6 conveyed on the downstream side may be an acute angle, You may make it become an obtuse angle as shown in FIG.6 (b).

  When the container film 3 is made of aluminum as in the above embodiment, it is preferable to set the angle β to an obtuse angle as shown in FIG. On the other hand, when the container film 3 is made of resin, the above-mentioned angle β is set to an acute angle as shown in FIG. More preferably, the contact time between the film receiving roll 18 and the container film 3 is lengthened to increase the cooling rate.

  DESCRIPTION OF SYMBOLS 1 ... PTP sheet, 2 ... Pocket part, 3 ... Container film, 4 ... Cover film, 5 ... Tablet, 6 ... PTP film, 8 ... PTP packaging machine, 10 ... Sealing device, 14 ... Pocket part forming device, 16 ... Tablet Loading device, 18 ... film receiving roll, 19 ... seal roll, 24 ... sheet punching device, 41 ... flat surface, 43 ... pocket receiving recess.

Claims (5)

A pocket portion forming means for forming a pocket portion for accommodating the contents with respect to the belt-like container film,
Filling means for filling the pocket portion with the contents;
Sealing means for attaching a band-shaped cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion,
In a PTP sheet manufacturing apparatus comprising sheet punching means for punching a strip-shaped PTP film with the cover film attached to the container film in units of PTP sheets,
The sealing means includes
A pocket receiving recess capable of accommodating the pocket portion of the container film, a film receiving roll capable of conveying the container film by its own rotation while hooking the pocket portion by the pocket receiving recess, and a pressure contact with the film receiving roll A heating roll that can be heated, and is configured to attach the cover film to the container film by feeding the two films between the two rolls and heating and press-contacting them,
The film receiving roll is
The outer peripheral surface has a substantially polygonal column shape having a plurality of flat surfaces orthogonal to the radial direction, and in each of the flat surfaces, the pocket receiving recess is formed,
The PTP sheet manufacturing apparatus characterized in that the periphery of each pocket receiving recess has a flat surface shape .   The length of each flat surface in the circumferential direction of the film receiving roll is a length corresponding to n pitches (n is a natural number of 1 or more) of the sheet formation pitch of the PTP sheet in the longitudinal direction of the PTP film. The PTP sheet manufacturing apparatus according to claim 1, wherein:   The PTP sheet manufacturing apparatus according to claim 1, wherein the seal roll has a cylindrical shape.   The PTP sheet manufacturing apparatus according to any one of claims 1 to 3, wherein the pocket receiving recess is formed so that an inner peripheral side surface thereof is orthogonal to the flat surface.   The PTP sheet manufacturing apparatus according to any one of claims 1 to 4, wherein the container film and the cover film are formed using aluminum as a main material.

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