JP5727972B2 - Blister pack, blister pack manufacturing apparatus, and blister pack manufacturing method - Google Patents

Description

  The present invention relates to a blister pack, a blister pack manufacturing apparatus, and a blister pack manufacturing method.

  In general, PTP (press-through pack) is known as a blister pack used in the field of pharmaceuticals and the like.

  PTP is composed of a container film in which a pocket part filled with contents such as tablets and capsules is formed, and a cover film attached to the container film so as to seal the opening side of the pocket part. Yes. In PTP, the contents can be taken out by pressing the pocket portion and breaking through the cover film with the contents contained therein.

  However, when the contents of the pocket are relatively fragile tablets such as disintegrating tablets, the tablets may be broken when taking out the tablets by the above method.

  On the other hand, in recent years, in the field of pharmaceuticals and the like, it has been studied to adopt a peel-open method in which the contents are taken out from the pocket portion by peeling the cover film from the container film.

  As a blister pack adopting the peel open method, for example, a portion pack containing milk or the like is well known. As such a portion pack, for example, a broken line such as a half-cut line is formed in advance on a part of a flange portion formed at the opening peripheral edge of a cup portion (pocket portion) containing milk or the like, and when opening Is known to have a configuration in which the flange portion is bent along the breaking line, a part of the outer edge portion is broken, the cover film constituting the lid portion is peeled off by gripping the part (for example, , See Patent Document 1).

JP 62-251377 A

  However, depending on the material, thickness, and the like of the container film constituting the blister pack, the rigidity of the container film may be lowered, and the breakability at the break line of the flange portion may be deteriorated. For example, a container film made of an aluminum laminate film or CPP (unstretched polypropylene) may not be broken once even if the flange portion is folded in two along the breaking line. As a result, the openability of the blister pack may be reduced.

  The present invention has been made in view of the above circumstances, and has as one of its main objects to provide a blister pack, a blister pack manufacturing apparatus, and a blister pack manufacturing method capable of improving the openability. .

  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 blister pack manufacturing apparatus for manufacturing a blister pack including a container film having a pocket portion for containing contents and a cover film attached to the container film so as to close the pocket portion. There,
A pocket portion forming means for forming the pocket portion in the container film while conveying the belt-shaped container film;
Filling means for filling the pocket portion with the contents;
Attaching means for attaching the band-like cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion;
Punching means for punching out the blister pack in a predetermined number unit from a belt-like body in which the cover film is attached to the container film;
In the blister pack, a break line forming means that extends outward from the opening periphery of the pocket portion and forms a break line for breaking a part of the flange portion of the container film to which the cover film is attached,
At least in a stage after the cover film is attached to the container film, a height difference that forms a difference in height in the formation portion of the break line in the flange portion simultaneously with the formation of the break line or after the formation of the break line. A blister pack manufacturing apparatus comprising a difference forming means.

  According to the above means 1, it is possible to manufacture a peel-open type blister pack in which the flange portion is cut along the breaking line and the cover film is peeled off from the container film using the portion as an opening start point. Thereby, it can take out without damaging the contents in a pocket part, etc., without pressing a pocket part.

  Moreover, in the blister pack manufactured by such a manufacturing apparatus, a height difference is formed in the broken line forming portion of the flange portion to be broken at the time of opening. In other words, one or a plurality of convex portions or concave portions that are convex toward the pocket portion opening surface side or the projecting surface side are formed at the fracture line forming portion of the flange portion, and the cross section of the flange portion along the fracture line. The shape becomes a non-linear shape.

  For this reason, when it is going to bend a flange part along a fracture line, it is a part (for example, pocket part protrusion) which becomes the action point furthest away from the part which becomes a fulcrum (for example, the part which projected most to the pocket part opening side). The force concentrates locally on the most protruding part).

  Therefore, at the beginning of the bending of the flange portion, the portion where the force is concentrated is first broken, and thereafter, the portion of the broken portion spreads as the amount of bending of the flange portion increases. It will be broken so that the flange part may tear along. That is, in addition to the action of “folding” the flange portion along the breaking line, the action of “breaking” along the longitudinal direction of the breaking line is added. As a result, the flange portion can be instantaneously broken with a “crisp” without bending the flange portion many times.

  Further, since the force required for the work of breaking the flange portion can be smaller, for example, even a relatively weak person such as a child or an elderly person can easily break the flange portion.

  As a result, the flange portion can be easily broken, and the openability of the blister pack can be improved.

  Moreover, the rigidity of the whole flange part can also be improved because a height difference is formed in the broken line formation site | part of a flange part. Therefore, when the cover film is peeled off from the container film, it is possible to suppress the occurrence of problems such as bending of the flange portion and difficulty in performing the opening operation. As a result, it is possible to further improve the openability of the blister pack.

  Furthermore, in this means, the height difference is formed in the flange portion after the cover film is attached to the container film.

  If it is configured to form a height difference in the portion that becomes the flange portion of the container film before attaching the cover film, such as when forming the pocket portion, and then the cover film is attached to the container film, the pocket portion It is necessary to secure a flat film attachable area (area where the cover film can be attached) without any difference in height in the surrounding flange part, and the size of the flange part and thus the blister pack as a whole is enlarged. There is concern.

  On the other hand, in this means, by forming a height difference in the flange portion after attaching the cover film, the height difference forming region can be formed closer to the pocket portion, and the blister pack can be made compact. Can do.

  Moreover, when a break line is formed on the container film before the cover film is attached, there is a concern that the container film may be cut off halfway due to the tension of the film conveyance.

  On the other hand, in this means, generation | occurrence | production of the said malfunction can be suppressed by forming a break line with respect to the container film after cover film attachment.

  Mean 2. A blister pack manufactured by the blister pack manufacturing apparatus according to means 1.

  According to the means 2, the same effects as the means 1 can be obtained.

Means 3. Blister pack manufacturing method for manufacturing a blister pack including a container film having a pocket portion for containing contents, and a cover film attached to the container film so as to close the pocket portion Because
A pocket portion forming step for forming the pocket portion in the container film while conveying the belt-like container film;
A filling step of filling the pocket portion with the contents;
An attachment step of attaching the 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;
A punching step of punching out the blister pack in a predetermined number unit from a belt-like body in which the cover film is attached to the container film;
A break line forming step for forming a break line for breaking a part of the flange portion of the container film to which the cover film is attached, extending outward from the opening peripheral edge of the pocket portion in the blister pack,
A height difference forming step for forming a height difference at a portion where the break line is formed in the flange portion, at least at a later stage of the attachment process, simultaneously with the break line forming process or at a later stage of the break line forming process. A method for producing a blister pack, comprising:

  According to the means 3, the same effects as the means 1 can be obtained.

  Means 4. A blister pack produced by the production method described in means 3.

  According to the means 4, the same effects as the means 1 can be obtained.

  Means 5. The blister pack according to means 2 or means 4, wherein a cross-sectional shape of the flange portion along the breaking line is a wave shape.

  According to the means 5, the same effect as the means 1 can be obtained. Examples of the wave shape include a substantially sine wave shape, a sawtooth wave shape, a rectangular wave shape, and a triangular wave shape. In order to obtain the operation and effect of the means 1 more reliably, it is preferable that the cross-sectional shape of the flange portion along the fracture line includes a waveform of at least one cycle.

Means 6. In a predetermined area including the break line between the break line and the pocket part in the flange part, the non-attached area where the cover film is not attached,
A distance between a boundary line between the non-attachment area and the cover film attachment area formed around the pocket portion and a predetermined reference line (for example, a breaking line) orthogonal to the cover film opening direction is The blister pack according to claim 5, which is different in the longitudinal direction of the reference line.

  According to the above means 6, after the flange portion is cut along the breaking line, when the cover film starts to be peeled along the cover film opening direction, the film attachment region portion that starts to peel first is the entire boundary line. It becomes a part of it.

  Temporarily cut the flange part along the break line, and when the cover film starts to peel off, if the film attachment area part that starts to peel first is the entire boundary line, it will be larger when the cover film starts to peel off. Power is required. In addition, it is difficult to know whether the force is increased or decreased, the force is applied more than necessary, and the contents of the pocket portion may pop out.

  On the other hand, according to this means, it is not necessary to put in a strong force from the beginning of film opening by the said structure, and it can begin to peel off a cover film with a smaller force. Then, the cover film can be opened more smoothly, such as gradually applying force after the cover film begins to peel off.

  As a result, even a relatively weak person such as a child or an elderly person can easily peel off the cover film, and the blister pack can be further opened. In addition, it is possible to suppress the occurrence of problems such as the contents popping out carelessly when opening the blister pack.

  Furthermore, since the cover film is attached to the container film before the height difference is formed in the flange portion, the shape of the non-attached region (especially the film is not affected by the height difference processing). The shape of the boundary line between the attachment region and the non-attachment region) can be set more freely. If the height difference is formed in the portion that becomes the flange portion of the container film before the cover film is attached, it is difficult to attach the cover film to the recessed portion.

It is the schematic which shows the whole structure of the PTP packaging machine which concerns on one Embodiment. It is a top view which shows a PTP sheet. It is a perspective view which shows a PTP sheet. It is a top view which shows a PTP package body. It is a perspective view which shows a PTP package. It is the LL line | wire partial sectional view of FIG. 7 which shows a PTP package. It is the KK line | wire partial sectional view of FIG. 6 which shows a PTP package. It is sectional drawing which shows the uneven | corrugated formation apparatus in the state which has a movable mold | type in the stand-by position spaced apart from the fixed mold | type. It is sectional drawing which shows the uneven | corrugated formation apparatus in the state which has a movable type | mold in the work position close | similar to a fixed type | mold. It is a top view which shows the PTP package body which concerns on another embodiment. (A) is the MM line | wire partial sectional view of (b) which shows the PTP package which concerns on another embodiment, (b) is a top view which shows the PTP package which concerns on another embodiment. .

  Hereinafter, an embodiment will be described with reference to the drawings. First, the PTP sheet 1 as a blister sheet will be described in detail with reference to FIGS.

  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 close the pocket portions 2. Each pocket 2 stores one tablet 5 as a content.

  The container film 3 in this embodiment is formed of an aluminum laminate film. The aluminum laminate film is obtained by laminating a synthetic resin film on an aluminum film. On the other hand, the cover film 4 is formed of an aluminum film and is configured to be peelable from the container film 3.

  The container film 3 of the PTP sheet 1 is formed with a vertical slit 6a and a horizontal slit 6b for separation so that the PTP sheet 1 can be cut into sheet pieces of two pocket portions. The “slit” in the present embodiment means a non-penetrating cut line cut in the thickness direction of the container film 3, a so-called half cut line.

  Further, a tag portion 7 to which a lot number or the like is engraved is attached at one longitudinal end portion of the PTP sheet 1. In addition, the said sheet piece of 2 units | sets of each said pocket part is hereafter called "PTP package 8". The PTP package 8 corresponds to the blister pack in this embodiment.

  Here, the PTP package 8 will be described in more detail. A flange portion 90 is formed on the PTP package 8 so as to extend outward from the periphery of the opening of the pocket portion 2.

  The outer edge portion of the flange portion 90 includes a straight rear edge portion 90a defined by the vertical slit 6a, a straight side edge portion 90b defined by the horizontal slit 6b, and a front edge serving as an outer edge portion of the PTP sheet 1. Part 90c. The front edge portion 90c is formed in a substantially arc shape in plan view.

  Among these, the front edge portion 90c is configured to be further away from the pocket portion 2 than the rear edge portion 90a and the side edge portion 90b. That is, the flange portion 90 is configured to be expanded on the front side (front edge portion 90c side).

  An opening slit 91 having a substantially V-shaped cross section is formed as a break line on the front side of the flange portion 90. The opening slit 91 is formed in a straight line shape in plan view along a direction (left-right direction in FIG. 4) orthogonal to the cover film opening direction (upward direction in FIG. 4).

  In addition, a corrugated uneven portion 92 is formed on the front side of the flange portion 90 so that the cross-sectional shape along the opening slit 91 is substantially sinusoidal. Thereby, a height difference is formed on the front side of the flange portion 90.

  The corrugated uneven portion 92 includes a front side peak portion (back side concave portion) 92a that protrudes toward the pocket portion protruding surface side (lower side in FIG. 6) and a back side peak portion (front side) that protrudes toward the pocket opening surface side (upper side in FIG. 6). A plurality of (recessed portions) 92 b are alternately formed in the longitudinal direction of the opening slit 91 to form a plurality.

  The front side peak portion 92a and the back side peak portion 92b are formed along the cover film opening direction from the front edge portion 90c of the flange portion 90 to the vicinity of the pocket portion 2 so as to intersect the opening slit 91, respectively.

  Next, the procedure for opening the PTP package 8 will be described. In the present embodiment, the state of the PTP sheet 1 in which a plurality of PTP packaging bodies 8 are continuously provided (see FIGS. 2 and 3) or the state of being separated into one PTP packaging body 8 (FIGS. 4 and 5). It is configured so that it can be opened in any state.

  First, as shown in FIGS. 6 and 7, the PTP package 8 is gripped with the container film 3 side facing down and the cover film 4 side facing up. In the flange portion 90, the front edge portion 90c side of the opening slit 91 is picked with one hand, and the rear edge portion 90a side is picked with the other hand.

  Subsequently, the front edge portion 90c side of the flange portion 90 is bent toward the cover film 4 along the opening slit 91 and is broken.

  Thereafter, the cover film 4 is peeled off along the cover film opening direction while picking the front edge portion 90c side of the broken flange portion 90 (see the two-dot chain line in FIG. 7). Thereby, opening of the PTP package 8 is completed, and the tablet 5 accommodated in the pocket portion 2 can be taken out.

  Next, a schematic configuration of a PTP packaging machine (blister packaging machine) 10 as a blister pack production apparatus for producing the PTP sheet 1 will be described with reference to FIG.

  As shown in FIG. 1, on the most upstream side of the PTP packaging machine 10, the raw material of the strip-shaped container film 3 is wound in a roll shape. The drawer end side of the container film 3 wound in a roll shape is guided by a guide roll 13. The container film 3 is hooked on the 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.

  A pocket portion forming device 16 is provided between the guide roll 13 and the intermittent feed roll 14 along the conveyance path of the container film 3. The pocket portion forming device 16 has a function as a pocket portion forming means for forming a plurality of pocket portions 2 at predetermined positions of the container film 3. The pocket portion 2 is formed during an interval between the container film 3 transport operations by the intermittent feed roll 14.

  However, the PTP packaging machine 10 according to the present embodiment is not limited to the aluminum film made of the container film 3, but is a relatively hard thermoplastic resin material such as PP (polypropylene) or PVC (polyvinyl chloride). This is a packaging machine (combined machine) that can be manufactured. Therefore, the heating device 15 is provided on the upstream side of the pocket portion forming device 16. Of course, when processing the container film 3 made from aluminum, since it becomes cold processing, the heating apparatus 15 is not used.

  The container film 3 sent out from the intermittent feed roll 14 is hung in the order of the tension roll 18, the guide roll 19, and the film receiving roll 20. Since the film receiving roll 20 is connected to a motor that rotates at a constant speed, the container film 3 is transported continuously and at a constant speed. The tension roll 18 is in a state in which the container film 3 is pulled to the side where the container film 3 is tensioned by an elastic force, and prevents the container film 3 from being bent due to the difference in the transport operation between the intermittent feed roll 14 and the film receiving roll 20. The container film 3 is always kept in a tension state.

  A tablet filling device 21 is disposed between the guide roll 19 and the film receiving roll 20 along the conveyance path of the container film 3. The tablet filling device 21 has a function as a filling means for automatically filling the tablet 5 in the pocket portion 2. The tablet filling device 21 is configured to drop the tablets 5 by opening the shutter at predetermined intervals in synchronization with the transport operation of the container film 3 by the film receiving roll 20, and each pocket portion is accompanied by the shutter opening operation. 2 is filled with tablets 5.

  An inspection device 22 is disposed between the tablet filling device 21 and the film receiving roll 20 along the conveyance path of the container film 3. This inspection device 22 is used to inspect whether or not the tablets 5 are reliably filled in the pocket portions 2 from the opening side of the pocket portions 2, whether or not there are abnormalities in the tablets 5, and whether or not foreign matter is mixed in. Is.

  On the other hand, the original film of the cover film 4 formed in a band shape is wound in a roll shape on the most upstream side.

  The drawn end of the cover film 4 wound in a roll shape is guided by the guide roll 24 and guided toward the heating roll 25. 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. And the container film 3 and the cover film 4 pass between both the rolls 20 and 25 in a heating-pressing state, the cover film 4 is stuck to the container film 3, and the pocket part 2 is block | closed with the cover film 4. . Thereby, the PTP film 26 as a strip | belt body with which the tablet 5 was filled in each pocket part 2 is manufactured. On the surface of the heating roll 25, fine mesh-like ridges for sealing are formed, and a strong seal is realized by strongly pressing them. The film receiving roll 20 and the heating roll 25 constitute the attachment means in this embodiment.

  The PTP film 26 delivered from the film receiving roll 20 is hooked in the order of a tension roll 27 and an intermittent feed roll 28. Since the intermittent feed roll 28 is connected to an intermittently rotating motor, the PTP film 26 is intermittently conveyed. The tension roll 27 is in a state in which the PTP film 26 is pulled toward the side to be tensioned by the elastic force, and prevents the PTP film 26 from being bent due to the difference in the transport operation between the film receiving roll 20 and the intermittent feed roll 28. The PTP film 26 is always kept in tension.

  An inspection device 29 is disposed between the film receiving roll 20 and the tension roll 27 along the transport path of the PTP film 26. The inspection device 29 is for inspecting the appearance of the PTP film 26 from the protruding surface side of the pocket portion 2.

  The PTP film 26 sent out from the intermittent feed roll 28 is hooked in the order of the tension roll 31 and the intermittent feed roll 32. Since the intermittent feed roll 32 is connected to a motor that rotates intermittently, the PTP film 26 is intermittently conveyed. The tension roll 31 is in a state in which the PTP film 26 is pulled to the side where the PTP film 26 is tensioned by an elastic force, and prevents the PTP film 26 from being bent between the intermittent feed rolls 28 and 32.

  Between the intermittent feed roll 28 and the tension roll 31, a slit forming device 33 and a concavo-convex forming device 34 are sequentially arranged along the transport path of the PTP film 26. The slit forming device 33 constitutes the fracture line forming means in the present embodiment, and the unevenness forming device 34 constitutes the height difference forming means.

  The PTP film 26 fed from the intermittent feed roll 32 is hooked in the order of the tension roll 35 and the continuous feed roll 36 on the downstream side. 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 26. The sheet punching device 37 has a function as punching means for punching the outer edge of the PTP film 26 in units of one PTP sheet.

  In the present embodiment, two PTP sheets 1 are simultaneously punched in the width direction of the PTP film 26. Thereby, the PTP sheet 1 with the transport direction of the PTP film 26 as the lateral direction of the sheet is manufactured.

  The PTP sheet 1 punched by the sheet punching device 37 is transported by the take-out conveyor 39 and temporarily stored in the finished product hopper 40. When the inspection devices 22 and 29 determine that the product is defective, the PTP sheet 1 determined to be defective is separately discharged by a defective sheet discharge mechanism (not shown).

  A cutting device 41 is disposed on the downstream side of the continuous feed roll 36. Then, the unnecessary film portion 42 constituting the remaining material portion (scrap portion) remaining in a strip shape after being punched by the sheet punching device 37 is guided to the tension roll 35 and the continuous feed roll 36 and then guided to the cutting device 41. It is burned. The continuous feed roll 36 is in pressure contact with a driven roll, and performs a conveying operation while sandwiching the unnecessary film portion 42. The cutting device 41 has a function of cutting the unnecessary film portion 42 into a predetermined size and scrapping. The scrap is stored in the scrap hopper 43 and then disposed of separately.

  The rolls 14, 20, 28, 31, 32 and the like have a positional relationship in which the roll surface and the pocket portion 2 face each other, but the pocket portion 2 is formed on the surface of the intermittent feed roll 14 or the like. Since the recessed part accommodated is formed, the pocket part 2 is not crushed. Further, the feeding operation is performed while the pocket portion 2 is accommodated in each recess such as the intermittent feeding roll 14, so that the intermittent feeding operation and the continuous feeding operation are reliably performed.

  Although the outline of the PTP packaging machine 10 is as described above, the configurations of the slit forming device 33 and the unevenness forming device 34 will be described in more detail below.

  First, the configuration of the slit forming device 33 will be described in more detail. As shown in FIG. 1, the slit forming device 33 includes a fixed mold 51 and a movable mold 52. A drive / transmission mechanism 53 is connected to the movable mold 52 and is switched between a work position close to the fixed mold 51 and a standby position spaced from the fixed mold 51. As the drive / transmission mechanism 53, an arbitrary one such as a motor, a fluid pressure cylinder, or a cam transmission mechanism can be used.

  The movable mold 52 is provided with a plurality of slit forming blades (not shown) corresponding to the slits 6a and 6b for cutting and the slit 91 for opening. As described above, in the present embodiment, since two PTP sheets 1 are obtained at a time in the width direction of the PTP film 26, two sets of the plurality of slit forming blades as one set are PTP films. 26 are arranged in parallel in the width direction.

  On the other hand, the fixed mold 51 is formed with a concave groove (not shown) into which the slit forming blade enters. As the movable mold 52 moves to the working position, the slit forming blade is cut into the PTP film 26 by a predetermined amount. As a result, slits 6a and 6b having a substantially V-shaped cross section and an opening slit 91 are formed in a state where the PTP film 26 is left by a predetermined thickness. In addition, as above-mentioned, when the container film 3 is formed with the synthetic resin material, it is good also as a structure which heats the said slit formation blade with the heating apparatus which is not shown in figure.

  Next, the unevenness forming device 34 will be described in more detail. As shown in FIGS. 1, 8, and 9, the unevenness forming apparatus 34 includes a fixed mold 71 and a movable mold 72. A drive / transmission mechanism 73 is connected to the movable mold 72, and is switched between a working position close to the fixed mold 71 (see FIG. 9) and a standby position separated from the fixed mold 71 (see FIG. 8). As the drive / transmission mechanism 73, any motor, fluid pressure cylinder, cam transmission mechanism, or the like can be used.

  The PTP film 26 is intermittently conveyed between the fixed mold 71 and the movable mold 72 in the front direction in FIG.

  At both ends of the movable mold 72 in the film width direction (left and right direction in FIG. 8), an additional stamp is applied to the position corresponding to the tag portion 7 of the PTP sheet 1 from the cover film 4 side of the PTP film 26. A pressure part 75 is provided. On the other hand, the fixed mold 71 includes a pressure receiving portion 76 that receives pressure from the pressurizing portion 75 on the container film 3 side.

  Further, a pressing means for forming the corrugated uneven portion 92 is provided between the fixed mold 71 and the movable mold 72.

  More specifically, as the pressing means, the fixed die 71 is provided with a fixed block 81 as a container side pressing portion, and the movable die 72 is provided with a movable block 82 as a cover side pressing portion.

  A pressing portion 84 is formed on the cover film facing surface of the movable block 82 corresponding to the position where the opening slit 91 is formed. On the other hand, a pressure receiving portion 83 that receives the pressure from the pressurizing portion 84 on the container film 3 side is formed on the container film facing surface of the fixed block 81. In addition, corrugated uneven portions 83a and 84a corresponding to the mountain portions 92a and 92b are formed on the opposing surfaces of the pressure receiving portion 83 and the pressurizing portion 84, respectively.

  As described above, when the container film 3 is formed of a synthetic resin material, the fixed mold 71 and the movable mold 72 may be heated by a heating device (not shown).

  Now, with regard to the procedure and effect of manufacturing the PTP sheet 1 by the PTP packaging machine 10 configured as described above, in particular, after the tablet portion 5 is filled with the tablet 5 and the sealed PTP film 26 is formed. The explanation will focus on the main steps.

  The PTP film 26 formed through the pocket forming process for forming the pocket 2, the filling process for filling the tablet 2 with the tablet 5, the attaching process for attaching the cover film 4 to the container film 3, etc. After passing through, it transfers to a slit formation process. The slit forming step constitutes the break line forming step in the present embodiment.

  In the slit forming step, the separation slits 6 a and 6 b and the opening slit 91 are formed at predetermined positions of the PTP film 26. More specifically, the intermittently transported PTP film 26 is stopped at a predetermined position. In this state, the movable mold 52 of the slit forming device 33 moves, and the PTP film 26 is moved between the movable mold 52 and the fixed mold 51. It will be sandwiched. At the same time, the slit forming blade pressed from the container film 3 side cuts by a predetermined amount to form the slits 6a and 6b for separation and the slit 91 for opening.

  The PTP film 26 that has undergone the slit forming process moves to the concavo-convex forming process. The unevenness forming step constitutes the height difference forming step in the present embodiment.

  Here, the unevenness forming device 34 marks the predetermined position of the PTP film 26 and forms the corrugated uneven portion 92 at the predetermined position. More specifically, as the movable mold 72 of the unevenness forming device 34 moves from the standby position to the work position, a part of the protruding portion of the pressure unit 75 bites into the PTP film 26 from the cover film 4 side. A portion corresponding to a character or the like is plastically deformed into a concave shape and stamped. As a result, a predetermined marking is made at a position corresponding to the tag portion 7 of the PTP sheet 1.

  At the same time as the above-mentioned engraving is performed, a predetermined portion of the PTP film 26 is crushed and plastically deformed by the pressure portion 84 of the movable block 82 and the pressure receiving portion 83 of the fixed block 81, so that the corrugated portion 92 is formed.

  When the concavo-convex forming process is completed, the process proceeds to a punching process. In the punching process, the PTP sheet 1 is punched from the PTP film 26 by the sheet punching device 37. As described above, the PTP sheet 1 as shown in FIGS. 2 and 3 can be obtained.

  As described in detail above, according to the present embodiment, the peel-open PTP packaging in which the flange portion 90 is cut along the opening slit 91 and the cover film 4 is peeled off from the container film 3 using the portion as the opening start point. The body 8 can be manufactured. Thereby, it is possible to take out the tablet 5 in the pocket portion 2 without damaging it without pressing the pocket portion 2.

  Further, in the PTP package 8 manufactured by the PTP packaging machine 10, the corrugated uneven portion 92 is formed at the formation portion of the opening slit 91 of the flange portion 90 to be broken at the time of opening. For this reason, when it is going to bend the flange part 90 along the slit 91 for opening, the force is locally applied with respect to the front side peak part 92a used as the action point most distant from the back side peak part 92b used as a fulcrum. You will concentrate.

  Accordingly, at the beginning of the bending of the flange portion 90, the front side peak portion 92a where the force is concentrated is first broken, and thereafter, the broken portion is expanded as the bending amount of the flange portion 90 is increased. The flange portion 90 is torn along the longitudinal direction of the slit 91 for use. That is, in addition to the action of “folding” the flange portion 90 along the opening slit 91, the action of “breaking” along the longitudinal direction of the opening slit 91 is added. As a result, the flange portion 90 can be instantaneously broken with “crisp” without bending the flange portion 90 many times.

  Further, since the force required for the breaking operation of the flange portion 90 can be reduced, the flange portion 90 can be easily broken even by a relatively weak person such as a child or an elderly person.

  As a result, the flange portion 90 is easily broken and the opening of the PTP package 8 can be improved.

  Further, since the corrugated uneven portion 92 is formed in the flange portion 90, the rigidity of the entire flange portion 90 can be increased. Therefore, when the cover film 4 is peeled off from the container film 3, it is possible to suppress the occurrence of problems such as the flange 90 being bent and the opening operation becoming difficult. As a result, it is possible to further improve the openability of the PTP package 8.

  Further, in the present embodiment, the corrugated uneven portion 92 is formed in the flange portion 90 at a stage after the cover film 4 is attached to the container film 3.

  If the cover film 4 is attached, such as when the pocket portion 2 is molded, an uneven portion 95 is formed in a portion to be the flange portion 90 of the container film 3 (see FIGS. 11A and 11B), and then the container When the cover film 4 is configured to be attached to the film 3, it is necessary to secure a flat film attachable region without forming irregularities in the flange portion 90 around the pocket portion 2. For this reason, there is a concern that the entire length W2 of the flange portion 90 (PTP package 8) is increased by as much as securing the length W1 of the region [see FIG. 11 (b)]. In other words, the length W3 of the region for forming the concavo-convex portion 95 must be set short, and it may be difficult to ensure desired rigidity.

  On the other hand, in this embodiment, the formation area of the corrugated uneven portion 92 is formed closer to the pocket portion 2 by forming the corrugated uneven portion 92 in the flange portion 90 after the cover film 4 is attached. The PTP package 8 can be made compact. In other words, the corrugated uneven portion 92 can be formed in a wider range, and the rigidity can be further increased.

  In addition, when the opening slit 91 or the like is formed on the container film 3 before the cover film 4 is attached, there is a concern that the container film 3 may be cut in the middle due to the tension of the film conveyance.

  On the other hand, in this embodiment, generation | occurrence | production of the said malfunction can be suppressed by forming the slit 91 for opening with respect to the container film 3 after attachment of the cover film 4. FIG.

  In addition, since the corrugated uneven portion 92 is formed on the flange portion 90, the gripping property when the front edge portion 90c side of the flange portion 90 is picked at the time of opening is improved, so that the PTP package 8 is further opened. It is possible to improve the performance.

  Further, as in the present embodiment, when the container film 3 is formed of aluminum as a main material, such as an aluminum laminate film, in order to ensure the moldability, the container film 3 is compared with the contents such as the tablet 5. It is necessary to relatively increase the size of the pocket portion 2. Therefore, it becomes difficult to press the pocket portion 2 and break through the cover film 4 with the contents contained therein to take out the contents. Therefore, the effects of the present invention are more effective under the configuration according to the present embodiment.

  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 PTP sheet 1 in which the tablet 5 that is a solid preparation is accommodated as the content is embodied, but the content is not necessarily limited to the tablet 5. For example, the pocket 2 may be filled with a liquid, gel, or granular drug. Moreover, it is good also as a structure with which the pocket part 2 is filled with a foodstuff, an electronic component, etc.

  Further, the size and shape of the pocket portion 2 and the flange portion 90 are not limited to the above embodiment.

  When the contents are liquid, the corrugated uneven portion 92 is formed up to the front edge portion 90c of the flange portion 90 as in the above embodiment, so that after opening, the front side peak portion (rear side recessed portion) 92a. The liquid (for example, milk) in the pocket part 2 can be poured into a subject (for example, a cup) through this.

  (B) The arrangement and the number of the PTP package 8 in the PTP sheet 1 are not limited to the above embodiment (two rows, ten), and PTP sheets having various arrangements and numbers may be employed. it can.

  For example, one PTP package 8 may be configured to be punched out as a PTP sheet. Moreover, it is good also as a structure by which the several pocket part was formed in the one PTP package body 8. FIG.

  That is, in the said embodiment, what has one pocket part 2 (it accommodated one tablet 5) is called the PTP package (blister pack) 8, and what connected the said PTP package 8 in multiple numbers is PTP. Although referred to as a sheet (blister sheet) 1, the “blister pack” in the present invention includes not only the PTP package 8 having one pocket portion 2 (containing one tablet 5) but also the PTP sheet 1. As described above, a device having a plurality of pocket portions 2 (containing a plurality of tablets 5) is also included.

  (C) In the above embodiment, two PTP sheets 1 are manufactured simultaneously in the width direction of the PTP film 26, but instead, three or more sheets are manufactured in the width direction of the PTP film 26. Alternatively, it may be configured to manufacture one by one.

  (D) The material of the container film 3 and the cover film 4 is not limited to the above embodiment using aluminum as a main material, and other materials such as other metal materials and synthetic resin materials should be adopted. Can do. For example, the container film 3 may be formed of a synthetic resin material such as PP, PVC, or CPP.

  (E) In the above embodiment, the opening slit (half-cut line) 91 having a substantially V-shaped cross section is formed as a break line in the flange portion 90 of the PTP package 8. The configuration of the break line is not limited to this. For example, a slit having a substantially U-shaped cross section or a substantially U-shaped cross section may be formed.

  Moreover, it is good also as a structure which formed the perforation line in which the cut penetrated in the thickness direction of the container film 3 was located in a row as a broken line. However, when a perforation line is formed on the container film 3 after the cover film 4 is attached, the cut film penetrates to the cover film 4, so that the cover film 4 is peeled off from the container film 3. 4 may be torn. Therefore, it is more preferable to form a non-penetrating break line such as a slit (half-cut line) under a configuration in which a break line is formed after the cover film 4 is attached.

  Further, in addition to the action of “folding” the flange portion 90 along the breaking line, in order to transmit the action of “breaking” along the longitudinal direction of the breaking line more smoothly, the discontinuous perforation line is used. A continuously formed slit (half-cut line) or the like is more preferable.

  (F) In the above-described embodiment, the opening slit 91 is formed in a straight line shape in plan view. However, the present invention is not limited to this. For example, the opening slit 91 may be curved or bent in plan view. It is good also as a structure formed in shape.

  (G) In the above embodiment, the corrugated uneven portion 92 is formed in the entire longitudinal direction of the opening slit 91, but this is not limiting, and for example, it corresponds to one longitudinal section of the opening slit 91. The corrugated uneven portion 92 may be formed. However, the rupture property is higher when the corrugated uneven portion 92 is formed in the entire longitudinal direction of the opening slit 91.

  (H) The uneven | corrugated shape formed in the flange part 90 of the PTP package 8 is not limited to the said embodiment.

  For example, in the said embodiment, the cross-sectional shape of the flange part 90 along the slit 91 for opening is formed in the substantially sinusoidal shape with several unevenness | corrugations. Not only this but it is good also as a structure which becomes a wave shape with only one convex part or a recessed part along the longitudinal direction of the slit 91 for opening. In order to more reliably obtain the effects of the present invention, it is preferable that the cross-sectional shape of the flange portion 90 along the opening slit 91 includes a waveform of at least one cycle.

  The cross-sectional shape of the flange portion 90 along the opening slit 91 may be configured to be, for example, a sawtooth wave shape, a rectangular wave shape, a triangular wave shape, or the like.

  Further, not only in the wave shape, if a difference in height is formed in the formation portion of the opening slit 91 in the flange portion 90 so that the cross-sectional shape of the flange portion 90 along the opening slit 91 is a non-linear shape, The same effect as the wave shape is achieved.

  In the above embodiment, the corrugated uneven portion 92 (mountain portions 92a, 92b) extends from the front edge portion 90c of the flange portion 90 to the vicinity of the pocket portion 2 so as to intersect the opening slit 91 along the cover film opening direction. Is formed. For example, the front edge 90c of the flange 90 may be formed in a range including at least the opening slit 91 such that the corrugated uneven portion 92 is not formed.

  (I) In the above-described embodiment, the unevenness forming apparatus 34 in which the height difference forming means for forming the corrugated uneven portion 92 and the marking means for performing the marking are integrated is employed. That is, the formation process of the corrugated uneven portion 92 and the marking process are performed simultaneously. However, the present invention is not limited to this, and the height difference forming means (level difference forming step) may be provided integrally with another device (process) such as a sheet punching device 37 (punching step), or another device ( You may provide as a mechanism (process) independent of (process).

  Moreover, it is good also as a structure which forms the waveform uneven | corrugated | grooved part 92 with respect to the PTP sheet 1 punched from the PTP film 26 (after the punching process).

  However, in consideration of difficulty in forming the opening slit 91 and the like, it is preferable to perform the step of forming the corrugated uneven portion 92 simultaneously with the formation of the opening slit 91 and the like or after the formation of the opening slit 91 and the like.

  (J) In the above embodiment, during the interval of the transporting operation of the PTP film 26, the PTP film 26 is stopped and pressed by the unevenness forming device 34 (the fixed mold 71 and the movable mold 72), so that the waveform An uneven portion 92 is formed. For example, the corrugated uneven portion 92 may be formed while being sandwiched by a pair of rolls while the PTP film 26 is continuously conveyed.

  (K) In the above embodiment, the slit forming device 33 is configured to simultaneously form the slits 6a and 6b for separation and the slit 91 for opening. However, the present invention is not limited to this, and the formation of the slits 6a and 6b for separation and the formation of the slit 91 for opening may be performed by a separate mechanism (process). For example, the opening slit 91 may be formed on the PTP sheet 1 punched from the PTP film 26 (after the punching process).

  (L) Although not particularly mentioned in the above embodiment, the cover film 4 is sealed (thermally welded) over the entire flange portion 90 of the PTP package 8. Instead of this, the flange portion 90 of the PTP package 8 may have a non-sealed area (non-attached area) where the cover film 4 is not sealed.

  For example, in the PTP package 8 shown in FIG. 10, an annular sealing region (attachment region) Z <b> 1 in which the cover film 4 is sealed is formed around the pocket portion 2 in the flange portion 90. A seal region Z2 is formed over the edge 90c (see the dotted pattern in FIG. 10). A region between the sealing region Z1 and the sealing region Z2 is a non-sealing region Z3 where the cover film 4 is not sealed. In the example shown in FIG. 10, the boundary line Y between the non-sealing region Z3 and the sealing region Z1 is formed in a V shape in plan view that is convex toward the opening slit 91 side. Accordingly, the distance from the opening slit 91 serving as the reference line to the boundary line Y is the shortest at the substantially central portion in the longitudinal direction of the opening slit 91 and is the longest at both longitudinal ends of the opening slit 91. . That is, the distance from the opening slit 91 along the cover film opening direction (upward in FIG. 10) to the boundary line Y is different in the longitudinal direction of the opening slit 91.

  According to the above configuration, when the flange portion 90 is cut along the opening slit 91 and then the cover film 4 is started to be peeled along the cover film opening direction, the portion that begins to peel first in the seal region Z1 is a boundary. It does not become the whole area of the line Y but only the tip end portion Ya.

  If the flange film 90 is cut along the opening slit 91 and then the cover film 4 starts to be peeled off, if the part of the seal region Z1 that starts to peel first is the entire boundary line Y, the cover film 4 A greater force is needed to start stripping. In addition, it is not possible to know whether the force is increased or decreased, and an excessive force is applied to open the bag. The tablet 5 in the pocket portion 2 may pop out.

  On the other hand, according to the said structure, it is not necessary to put strong force from the beginning of opening of the cover film 4, and it can begin to peel off the cover film 4 with smaller force. Then, the cover film 4 can be opened more smoothly, such as gradually applying force after the cover film 4 starts to peel off.

  As a result, even a relatively weak person such as a child or an elderly person can easily peel off the cover film 4, and further improve the opening of the PTP package 8. Further, it is possible to suppress the occurrence of problems such as the tablet 5 popping out carelessly when the PTP package 8 is opened.

  Further, under the configuration in which the cover film 4 is attached to the container film 3 before the formation of the corrugated uneven portion 92 on the flange portion 90, the non-sealed region is not affected by the formation of the corrugated uneven portion 92. The shape of Z3 (particularly the shape of the boundary line Y between the non-sealed region Z3 and the sealed region Z1) can be set more freely. If the corrugated uneven portion 92 (uneven portion 95) is formed in the portion that becomes the flange portion 90 of the container film 3 before the cover film 4 is attached, the cover film 4 is attached to the recessed portion. It becomes difficult to attach (see FIG. 11).

  In order to form the non-sealing region Z3, a concave portion corresponding to the non-sealing region Z3 is formed on one of the two rolls 20 and 25 constituting the sealing means (attaching means), for example, on the surface of the film receiving roll 20. It only has to be formed.

  Further, the shape of the non-sealing region Z3 (particularly the shape of the boundary line Y between the non-sealing region Z3 and the sealing region Z1) is not limited to the above configuration. If the boundary line Y is not at least a straight line orthogonal to the cover film opening direction, the same effects as the above-described effects can be obtained.

  For example, the boundary line Y may be formed in an inverted V shape in plan view that is convex toward the pocket portion 2 side. Moreover, it is good also as a structure by which the boundary line Y was formed in planar view circular arc shape or planar view wave shape (zigzag shape).

  Moreover, the boundary line Y may be comprised in the linear form inclined with respect to the cover film opening direction. In this configuration, the distance from the opening slit 91 to the boundary line Y is the longest at one of the longitudinal ends of the opening slit 91 and the shortest at the other.

  DESCRIPTION OF SYMBOLS 1 ... PTP sheet, 2 ... Pocket part, 3 ... Container film, 4 ... Cover film, 5 ... Tablet, 8 ... PTP packaging body, 10 ... PTP packaging machine, 16 ... Pocket part formation apparatus, 20 ... Film receiving roll, 21 DESCRIPTION OF SYMBOLS ... Tablet filling apparatus, 25 ... Heating roll, 33 ... Slit forming apparatus, 34 ... Concavity and convexity forming apparatus, 37 ... Sheet punching apparatus, 90 ... Flange part, 91 ... Slit for opening, 92 ... Corrugated uneven part, 92a ... Front side mountain Part, 92b ... back side mountain part.

Claims (6)

A blister pack manufacturing apparatus for manufacturing a blister pack including a container film having a pocket portion for containing contents and a cover film attached to the container film so as to close the pocket portion. There,
A pocket portion forming means for forming the pocket portion in the container film while conveying the belt-shaped container film;
Filling means for filling the pocket portion with the contents;
Attaching means for attaching the band-like cover film so as to close the pocket portion with respect to the container film filled with the contents in the pocket portion;
Punching means for punching out the blister pack in a predetermined number unit from a belt-like body in which the cover film is attached to the container film;
In the blister pack, a break line forming means that extends outward from the opening periphery of the pocket portion and forms a break line for breaking a part of the flange portion of the container film to which the cover film is attached,
At least in a stage after the cover film is attached to the container film, a height difference that forms a difference in height in the formation portion of the break line in the flange portion simultaneously with the formation of the break line or after the formation of the break line. A blister pack manufacturing apparatus comprising a difference forming means.   A blister pack manufactured by the blister pack manufacturing apparatus according to claim 1. Blister pack manufacturing method for manufacturing a blister pack including a container film having a pocket portion for containing contents, and a cover film attached to the container film so as to close the pocket portion Because
A pocket portion forming step for forming the pocket portion in the container film while conveying the belt-like container film;
A filling step of filling the pocket portion with the contents;
An attachment step of attaching the 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;
A punching step of punching out the blister pack in a predetermined number unit from a belt-like body in which the cover film is attached to the container film;
A break line forming step for forming a break line for breaking a part of the flange portion of the container film to which the cover film is attached, extending outward from the opening peripheral edge of the pocket portion in the blister pack,
A height difference forming step for forming a height difference at a portion where the break line is formed in the flange portion, at least at a later stage of the attachment process, simultaneously with the break line forming process or at a later stage of the break line forming process. A method for producing a blister pack, comprising:   A blister pack produced by the production method according to claim 3.   The blister pack according to claim 2 or 4, wherein a cross-sectional shape of the flange portion along the breaking line is a wave shape. In a predetermined area including the break line between the break line and the pocket part in the flange part, the non-attached area where the cover film is not attached,
The distance between the boundary line between the non-attachment area and the cover film attachment area formed around the pocket portion and a predetermined reference line orthogonal to the cover film opening direction is the length of the reference line. The blister pack according to claim 5, wherein the blister packs differ in direction.

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