JP2014213860A - Ptp packaging method and machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PTP packaging which has beautiful appearance and outer peripheral edge.SOLUTION: The PTP packaging machine producing the PTP packaging has plural pocket parts 10a and a surplus film part 10b which has no pocket part on one end in a longitudinal direction. The PTP packaging machine has a formation device for forming the pocket part on a container film 10, a product supply area disposed on a downstream side of the formation device and for supplying a product to the pocket part, and a seal device disposed on a downstream side of the packed product supply area and for covering the container film with a lid film and for performing thermal seal for sealing them. The formation device forms the pocket parts so that the surplus film parts of the PTP packaging arranged laterally face to each other inside.

Description

  The present invention relates to a PTP packaging method and a PTP packaging machine, and more specifically to a technique for manufacturing two rows of PTP packages.

  The PTP (Press Through Packaging) package is a packaging form in which the contents are pushed out from the container (pocket part) side to break the upper lid, and the contents are taken out, and is often used for the packaging of tablets and capsules in medicine packaging.

  A PTP packaging machine for manufacturing such a PTP packaging body continuously draws and conveys a resin container film from a raw fabric roll, heats the container film in the middle of the conveyance, and then forms a concave pocket portion at a predetermined position of the container film. PTP by molding (container), supplying a packaged product such as a tablet into the pocket, and then covering the container film with a lid film, then heat-sealing and sealing both films, and cutting in place. A package is manufactured. This type of PTP packaging machine is disclosed in, for example, Patent Document 1 and the like.

  In the apparatus disclosed in Patent Document 1, the portions that finally become PTP packages are formed in a line, but for example, as disclosed in Patent Document 2, the PTP packages are arranged in two lines. Some are formed side by side. FIG. 1 shows a container film 1 after forming pocket portions in a PTP packaging machine that manufactures a PTP package in such two rows. In FIG. 1A, a region R surrounded by a two-dot chain line indicates a portion of a container film when an individual PTP package is finally formed. As is apparent from the figure, a layout is adopted in which two elongated PTP packages (region R) are arranged horizontally so that the longitudinal direction thereof is in the width direction perpendicular to the transport direction of the container film 1. Then, a predetermined position of the heated container film 1 is molded, and N × M (2 × 5 in this example) downwardly convex pocket portions 1a are molded at predetermined positions in each region R of the container film 1. To do.

  Further, when the container film 1 is covered with the lid film 2 and sealed, a sealing device 3 having a pair of rollers (a seal receiving roller 4 and a seal roller 5) as shown in FIG. 2 is used. The container film 1 is placed on the upstream side of the sealing device 3, and the packaged material 6 is supplied into the pocket portion 1 a, and is supplied to the seal receiving roller 4 side in a state where the packaged product 6 is stored. The The seal receiving roller 4 is provided with a large number of recesses 4a on its peripheral surface. The recess 4a has a layout that matches the arrangement interval of the pocket portions 1a formed in the container film 1. The pocket portion 1a is inserted into the recess 4a. As a result, the container film 1 in contact with the seal receiving roller 4 rotates and moves with the flat surface in contact with the peripheral surface of the seal receiving roller 4. On the other hand, the lid film 2 is supplied to the seal roller 5 side. When the container film 1 and the lid film 2 pass between the pair of rollers 4 and 5 in a state of being overlapped, the films 1 and 2 are heated and pressurized to be heat sealed.

JP 2000-281008 A Japanese Patent No. 3169424

  By the way, the PTP package has a flat surplus film portion in which a pocket portion for imprinting manufacturing date and other information is not formed at one end portion in the longitudinal direction. As shown in FIG. 1, the surplus film portion 1 b is disposed on the outside (both side edges) of the container film 1. That is, the surplus film part 1b provided in the PTP package lined up side by side is arrange | positioned in the edge part on the opposite side.

After the operation starts, the container film 1 tends to increase in temperature in the molding device 16 and other post-molding guide portions as the operation continues, and the temperature of the container film 1 after molding does not become constant.
Then, the expansion / contraction ratio of the container film after molding is changed, and the dimension of the molded film tends to become longer as the continuous operation time becomes longer, immediately after the start of operation. The container film 1 in the sealing device 20 from the molding device 16 immediately after the start of operation also tends to shrink in proportion to the stop time depending on the film (PP or the like) used. Therefore, in order to prevent the container film 1 that has shrunk after stopping from biting the pocket 1a by the sealing device 3 (the pocket 1a enters the recess 4a of the seal receiving roll 4 cleanly), the feed pitch of the container film 1 Must be set slightly longer than optimal.

  According to such setting, the shrinkage of the container film 1 decreases as the operation continues, and the pocket part 1a is displaced forward relative to the concave part 4a of the seal receiving roller 4 as it is. The movement of the pocket portion 1a to the rear in the traveling direction so as to enter the concave portion 4a is permitted because the film is loosened and bent, so that the pocket is not caught.

  At this time, stress is applied to the outer periphery of the pocket portion 1a on the container film 1 along with the relative rearward movement. In the case of the pocket portion 1a (reference numeral A in FIG. 1) located in the center portion in the width direction, this stress direction is parallel to the film transport direction, but the pocket portions 1a (see FIG. 1) located on both sides in the width direction. 1 middle code B) goes diagonally outward. Then, the container film 1 is heat-sealed and integrated with the lid film 2 while leaving the stress / distortion in the diagonally outer direction.

  Therefore, after that, as shown in FIG. 3, the PTP package 7 manufactured by cutting a predetermined portion of the film is in a state in which the corner portion 7a where the distortion remains is bent in the diagonally outward direction, and has a beautiful appearance. To lose. In addition, this bent posture may give the user an image as if the corner portion 7a of the PTP package 7 collided somewhere after manufacture, resulting in a problem that the commercial value is reduced.

  In order to solve the above-described problems, a PTP packaging machine according to the present invention includes (1) a PTP packaging body including a plurality of pocket portions and an excess film portion in which the pocket portions are not formed at one end portion in the longitudinal direction. A molding apparatus for molding the pocket portion in a container film, a product supply area that is disposed on the downstream side of the molding apparatus and supplies a product to the pocket portion, and an article to be packaged It is arranged on the downstream side of the supply region, and includes a sealing device that covers the cover film on the container film and heat-seals them to seal them, and the molding device has the surplus film portion of the PTP package arranged side by side. The pocket portion is molded so as to have a layout facing the inside. If it does in this way, it will become difficult to apply the stress of the diagonal direction to the surplus film part. And the stress toward the diagonally outer side from the pocket portions 10a located on both outer sides in the width direction occurs, and the container film and the lid film are heat-sealed and integrated while leaving the stress / distortion in the diagonally outer direction, Even if the PTP package is finally manufactured, there is no excess film portion on the outside, and the pocket portion located on the outside in the width direction to the outer peripheral edge of the PTP package is short and is not easily bent. Therefore, it is suppressed that the periphery of a PTP package body bends greatly.

  (2) A heating device for heating the container film is provided on the upstream side of the molding device, and the heating device weakens the heating state with respect to the central portion in the width direction of the container film as compared with the region where the pocket portion is formed. It is good to do so. To weaken, for example, the heating temperature of the central portion in the width direction may be lowered or unheated, and the degree of softening may be weaker than the region where the pocket portion is formed.

  If it does in this way, it will not be heated beforehand, or even if it will be heated, it will be weaker than other regions, it will not be easily affected by heat, and the effect of expansion and contraction after molding will be less at the central part of the container film after molding. Therefore, it is difficult for stress in the oblique direction to be applied to the surplus film portion, and it is possible to suppress the surplus film portion from being bent even in the finally manufactured PTP package.

  (3) The heating device may include a heating member that sandwiches the container film from above and below, and at least one of the upper and lower heating members is not in contact with the central portion in the width direction of the container film. If it does in this way, the non-contact part of a heating plate and a container film may weaken the heating state with respect to the center part of the width direction of a container film by simple structure, without a heat | fever transmitting directly to a container film from a heating plate. it can.

  (4) The PTP packaging method of the present invention is a PTP packaging method for producing a PTP package including a plurality of pocket portions and an excess film portion in which the pocket portions are not formed at one end portion in the longitudinal direction. The PTP package is manufactured in a state where the excess film portions of the PTP package arranged side by side are arranged facing the inside. In the heating device, since the non-heating part is arranged in the central part of the heating plate, even if the size of the PTP sheet to be manufactured changes, it is not necessary to use a heating plate that is heavy and difficult to handle because of its high temperature.

  According to the present invention, it becomes difficult for stress and distortion in the oblique direction to be applied to the surplus film portion of the PTP package, and the end on the opposite side to the surplus film portion is subjected to the outer periphery even if stress and strain in the oblique direction are applied. Because the distance to is short and the strength is strong, it is difficult to bend. Therefore, a PTP package with a clean appearance and outer peripheral edge can be manufactured.

It is a figure which shows the container film by which the pocket part at the time of packaging a PTP package in the conventional 2 rows was shape | molded. It is a figure explaining the sealing device which seals a container film and a lid film. It is a figure which shows the PTP package body manufactured with the conventional PTP packaging machine. It is a front view which shows suitable one Embodiment of the PTP packaging machine which concerns on this invention. It is a figure which shows the shaping | molding apparatus. It is a figure which shows the container film after passing a shaping | molding apparatus. It is a figure which shows the PTP package body manufactured with the PTP packaging machine of this embodiment. It is a figure which shows the heating apparatus in a modification. It is a figure which shows the container film after passing the heating apparatus in a modification.

  FIG. 4 shows a preferred embodiment of the PTP packaging machine according to the present invention. As shown in the figure, an original fabric roll 11 around which a container film 10 is wound is set rotatably on the upstream side of the apparatus. The container film 10 is continuously drawn from the original roll 11 by the feed roller 12, is stretched around a plurality of rollers 13, and is guided to the heating device 15. The heating device 15 heats a predetermined portion of the container film 10 (for example, the entire sandwiched film or a pocket portion forming region). The heating device 15 includes a pair of an upper heating plate 15a and a lower heating plate 15b that are opposed to each other up and down across the container film 10. These upper and lower heating plates 15a and 15b have built-in heaters that can generate heat at a predetermined temperature, and at least one of them can move up and down to contact and separate from a predetermined part of the container film 10. The container film 10 is sandwiched and separated by these upper and lower heating plates 15a and 15b and heated for a predetermined time to be softened into a moldable state. In addition, although it is shown as one box in the figure, it may be one as shown in the figure, for example, by providing a plurality of heating devices on the front and back and heating a plurality of times stepwise, the container film can be made more smoothly It is better to heat without stress.

  A molding device 16 is arranged close to the downstream side of the heating device 15, and a concave pocket portion 10 a that protrudes downward is molded into the container film 10 heated by the heating device 15 by pressure molding on the film region. .

  The container film 10 with a pocket portion that has passed through the molding device 16 is stretched over a dancer roller 19 and an idle roller 17 and conveyed along a predetermined path. Here, a film feeding device 14 for intermittently feeding the film is arranged between the molding device 16 and the dancer roller 19, and the film feeding device 14 clamps the container film 10 and is a distance corresponding to one molding length. After descending, the clamp is released and raised to return to the original position. A tablet supply device 18 is installed at a predetermined position above the conveyance path of the container film 10, and a tablet to be packaged is supplied from the tablet supply device 18 to each pocket portion 10 a. A sealing device 20 is disposed on the downstream side of the tablet supply device 18, and the container film 10 that has received the supply of the package is guided to the sealing device 20.

  On the other hand, the raw fabric roll 22 around which the lid film 21 made of an aluminum sheet is wound is rotatably installed in the vicinity of the carry-out end side of the PTP packaging machine. The lid film 21 drawn out from the original fabric roll 22 is stretched over a plurality of rollers 23 and is guided to a sealing device 20 through a predetermined path. And in this sealing device 20, while covering the cover film 21 so that the upper surface of the container film 10 may be covered, the contact part (unformed area | region of the pocket part 10a of the container film 10) of both films is heat-sealed. Sealed.

  The seal device 20 includes a seal roller 20a having a built-in heater, and a seal receiving roller 20b having a concave portion that coincides with a pocket portion formed in the container film 10 on the surface. The vertical and horizontal intervals of the recesses formed in the seal receiving roller 20 b are made to coincide with the vertical and horizontal intervals of the pocket portions 10 a formed in the container film 10. Thereby, the container film 10 is spanned in a state in which the formed pocket portion 10a is aligned so as to coincide with the recess provided in the seal receiving roller 20b. Therefore, the container film 10 is also conveyed with the rotation of the seal receiving roller 20b. Then, the container film 10 and the lid film 21 are overlapped with each other so as to pass between the seal roller 20a and the seal receiving roller 20b. The unformed area is tightly sealed and the tablet in the pocket is sealed.

  Further, on the downstream side of the sealing device 20, a marking device 25 for imprinting a lot number or the like on the surplus film portion on one end side of the PTP packaging body in which the pocket portion 10a is not formed can be separated into a predetermined number. For this reason, the slitting device 26 and the punching device 27 are arranged in this order by half-cutting a predetermined position of the film to form an easy-to-cut line around the pocket portion 10a. The punching device 27 punches a predetermined position of the sealed container film 10 and the lid film 21 to produce a PTP package having N × M pocket portions 10a.

  The molding device 16 disposed in the immediate vicinity of the downstream side of the heating device 15 includes an upper molding box 16a and a lower molding box 16b. At least one of the upper molding box 16a and the lower molding box 16b moves up and down, and the container film 10 is sandwiched from above and below.

  In the lower molding box 16b, for example, a lower mold 16c having a recess 16c 'at a predetermined position on the upper surface as shown in FIG. 5 is disposed. Further, the upper molding box 16a has a function of, for example, compressing air and presses the container film 10 toward the lower molding box 16b. Further, in the upper molding box 16a, for example, a pressure member such as a plug can be moved up and down at a predetermined upper position, and when the pressure member moves down in the upper molding box 16a, the lower end of the pressure member is placed on the container film 10. Contact and urge the contact part downward. The pressure member is provided at a position facing the recess 16c ′ formed in the lower mold 16c. Then, coupled with the pressurized pressure, the heated portion of the container film is pushed into the recessed portion 16c ′ disposed below, and a pocket portion protruding downward is formed along the inner shape of the recessed portion 16c ′. Is done. Various functions and configurations for molding a specific pocket portion of the molding apparatus 16 can be used. For example, vacuum suction may be performed from the lower molding box 16b side instead of the compressed air + plug, and molding may be performed along the inner peripheral surface of the recess 16c ′.

  The PTP packaging machine of the present invention manufactures PTP packaging bodies in two rows. For example, in this embodiment, the molding apparatus 16 creates 10 pocket portions 10a (2 × 5) for each PTP sheet. And the shaping | molding apparatus 16 of a present Example forms a 4 row total 8 package at a time in the front-back 2 row flow direction.

  Thereby, a molding process is performed by the molding device 16, and the passed container film 10 is molded with a pocket portion 10 a at a position facing the recess 16 c ′ of the molding device 16 as shown in FIG. 6. And the film site | part which finally comprises each PTP package becomes an area | region shown with a dashed-two dotted line in FIG. As shown in the figure, the flat surplus film portion 10b in which the pocket portion for stamping the date of manufacture and other information in the final PTP package is not formed is a recess-unformed region on the center side of the container film 10 Form in R1. Thereby, a PTP packaging body is manufactured in the state which has arrange | positioned the surplus film part 10b of the PTP packaging body located side by side facing inside.

  Since the surplus film portions of the PTP packagings arranged side by side are arranged on the inner side in this way, the occurrence of curling in the surplus film portions of the PTP packaging finally produced by cutting the appropriate position of the film by the punching device 27 Can be suppressed. That is, the container film 10 is heated by the heating device 15 and thermally expands, and the pocket portion 10a is cooled at the time of molding by the molding device 16, and then contracted by being gradually cooled. However, the temperature of the pocket molding device 16 and the temperature of the other guide portions are not constant, and the temperature of the cooling part may increase with the continuation of operation, and the shrinkage rate of the container film 10 fluctuates, and immediately after the operation starts. The container film molding dimension to be molded is short, and the film molding dimension tends to be longer as the continuous operation time is longer. In addition, the molded pocket film that is not sealed at the start of operation shrinks and becomes shorter in proportion to the passage of time. Therefore, in order to prevent the pocket device 10a from being bitten by the sealing device 20 (the pocket portion 10a enters the recess into the concave portion of the seal receiving roller 20a), the feeding pitch of the container film 10 is slightly longer than the actual sheet size. Must be set to As a result, as the operation continues, the temperature of the molding device 16 and other idle rollers 17, the dancer roller 19 and the like is increased, so that the amount of shrinkage after molding of the container film is reduced, so that the container molded film pitch is longer than the product pitch. It may become. In this state, a stress in a predetermined direction is applied to the container film 10 when the sealing process is performed by the sealing device 20. In the case of the pocket portion 10a (reference numeral A in FIG. 6) located at the center portion in the width direction, this stress direction is parallel to the film transport direction. Therefore, the surplus film portions of the PTP package disposed on the left and right are located in the central portion in the width direction of the container film 10 and may be connected to each other, and are not subjected to the stress in the oblique direction from the adjacent pocket portion 10a. Also, such oblique strain does not occur.

  Further, a stress is generated obliquely outward from the pocket portions 10a (reference numeral B in FIG. 6) located on both outer sides in the width direction, and the lid film 21 is heat-sealed while leaving the stress / distortion in the oblique outer direction. Finally, the PTP package 30 is manufactured (see FIG. 7). However, there is no surplus film portion 10b on the outer side, and the length from the pocket portion 10a located on the outer side in the width direction to the outer peripheral edge of the PTP package 30 is short and is not easily bent. Even if it is bent, for example, as shown in FIG. 7, the deformed portion 30a is small and inconspicuous.

  In the embodiment described above, the heating device 15 heated the entire surface of the container film 10, but the present invention is not limited to this. For example, as shown in FIG. A concave groove 15c extending along the conveying direction is formed at the central portion in the width direction of 15a and 15b. Thus, when the container film 10 is sandwiched between the upper and lower heating plates 15a, the film portion facing the concave groove 15c is not in contact with the heating plate 15a and is not heated and does not thermally expand. Therefore, as shown in FIG. 9, the container film 10 after passing through the molding device 16 is heated and thermally expanded in the left and right regions (indicated by hatching) forming the pocket portion 10a, and then contracts. The region R2 maintains a stable state with little thermal expansion originally. Since the central region R2 becomes an excess film portion in the final PTP package, it is less susceptible to distortion due to stress in the oblique direction during the sealing process in the subsequent sealing device 20, and a cleaner PTP package can be manufactured. it can.

  Furthermore, since the heating device 15 is provided with a structure for heating at the center portion, even if the sheet size changes, there is no need to replace the heating device that is heavy and heated and difficult to handle in accordance with the product.

DESCRIPTION OF SYMBOLS 10 Container film 10a Pocket part 10b Surplus film part 15 Heating apparatus 15c Groove | groove 16 Molding apparatus 21 Lid film

Claims (4)

A PTP packaging machine for manufacturing a PTP packaging body including a plurality of pocket portions and an excess film portion in which the pocket portion is not formed at one end portion in the longitudinal direction,
A molding device for molding the pocket portion into a container film;
A product supply region that is disposed downstream of the molding apparatus and supplies products to the pocket portion;
It is arranged on the downstream side of the package supply area, and includes a sealing device that covers the lid film on the container film and seals them by heat-sealing them.
The PTP packaging machine, wherein the molding unit is configured to mold the pocket portion so that the excess film portions of the PTP packaging bodies arranged side by side have a layout facing the inside. A heating device for heating the container film is provided on the upstream side of the molding device,
2. The PTP packaging machine according to claim 1, wherein the heating device weakens a heating state with respect to a central portion in the width direction of the container film as compared with a region where the pocket portion is formed. The heating device has a heating member that sandwiches the container film from above and below,
The PTP packaging machine according to claim 2, wherein at least one of the upper and lower heating members is not in contact with the central portion in the width direction of the container film. A PTP packaging method for producing a PTP packaging body comprising a plurality of pocket portions and an excess film portion in which the pocket portions are not formed at one end portion in the longitudinal direction,
A PTP packaging method, wherein the PTP packaging body is manufactured in a state where the surplus film portions of the PTP packaging body arranged side by side are arranged facing the inside.

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