JP2008037430A - Heat sealer and medicine dividedly packaging apparatus equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat sealer capable of preventing any defective seal from occurring while shortening the time before the temperature of a heating device reaches a value necessary for the heat seal after starting a medicine dividedly packaging apparatus, and the medicine dividedly packaging apparatus equipped with the same. <P>SOLUTION: The heat sealer has a heater stand and a heater receiving stand provided facing the heater stand. A thin plate-shaped heating element to be heated by electric conduction for thermally weldable sheets is provided on the heater stand in an exposed manner. The thermally weldable sheets are thermally welded to each other by holding and heating the thermally weldable sheets by the heater stand and the heater receiving stand to form a thermally welded part. A packaged part demarcated so as to store an object to be stored by the heat seal is formed. A protective layer harder than the heating element is provided at least on one of a surface in contact with the thermally weldable sheet of the heating element and a surface opposite thereto. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention, for example, includes a heat sealing device that performs heat sealing on a heat-weldable sheet used as a medicine-wrapping paper to form a partitioned packaging portion that accommodates an item by heat sealing, and the heat sealing device. The present invention relates to a medicine packaging device.

  For example, as shown in Patent Document 1 below, the medicine packaging device includes a heat sealing device for forming individually packaged parts by performing heat sealing on the heat-weldable sheet. There is something. In this heat sealing device, a heater for heating the heat-weldable sheet is provided on the heater table so as to be exposed on one side of the heat-weldable sheet, and the heater receiver is disposed opposite to the heater table so as to sandwich the heat-weldable sheet. A stand is provided. Then, the heating element is energized and heated, and the heater base and the heater base are moved in directions close to each other, so that the heat-welding surface of the heat-welding sheet heated and pressed by both is heat-sealed. The individually welded packaging portions are formed on the heat-weldable sheet.

In the conventional heat sealing apparatus, the heating element is exposed to the heater base in order to shorten the time from the start of the medicine packaging apparatus until the heating element reaches the temperature necessary for heat sealing, and the heat generation is performed. The body is made of thin metal.
JP 2005-335810 A

  However, when heat-sealing sheets are heat-sealed to form individually partitioned packaging parts, depending on the number of drugs, particularly tablets, that are put inside, this may bring the heater base and heater base close together. It is conceivable that the heat-generating sheet may be caught between the heat-weldable sheets and the heating element is thinly formed to shorten the time required to reach the temperature required for heat sealing. It is conceivable that the heating element easily deforms due to the above. If it does so, it will become difficult to contact a heat-weldable sheet | seat for the part which the heat generating body deform | transformed, Therefore It becomes impossible to pinch | interpose a heat-weldable sheet | seat without gap, and the amount of heat required for heat sealing cannot be given to a heat-weldable sheet | seat. It is conceivable that a sealing failure will occur.

  Therefore, the present invention provides a heat seal device capable of preventing a sealing failure while shortening the time from the start-up of the drug packaging device until the heating element reaches the temperature required for heat sealing, and the drug component using the heat seal device. It is an object to provide a packaging apparatus.

  The heat sealing apparatus of the present invention is provided with a heater base and a heater base that is disposed opposite to the heater base, and a thin plate-like heating element that is heated by energizing the heat-weldable sheet is exposed to the heater base. And a heat seal part in which the heat-weldable sheets are heat-welded by sandwiching and heating the heat-weldable sheet between the heater base and the heater cradle, and the contents are accommodated by the heat seal part. A packaging part partitioned as appropriate is formed, and a hard protective layer is provided on at least one of the surface of the heating element that contacts the heat-welding sheet or the opposite surface, compared to the heating element. It is characterized by.

  In the heat sealing apparatus having the above configuration, since the heating element is formed in a thin plate shape, the heating element is heated in a short time by energization and rises to a required temperature. When the heater base and the heater cradle are brought close to each other, the heat-weldable sheet is welded to form a heat seal portion. At this time, even if the material to be put into the heat-weldable sheet is caught between the heater base and the heater cradle via the heat-weldable sheet, the heating element is provided with a hard protective layer. Therefore, the deformation of the heating element due to the biting is suppressed, and the subsequent sealing failure can be effectively suppressed.

  In the heat sealing apparatus of the present invention, the protective layer is provided on both the surface of the heating element that contacts the heat-welding sheet and the opposite surface.

  According to the above configuration, even if the contents to be put into the heat-weldable sheet are caught between the heater base and the heater cradle via the heat-weldable sheet, the surface side that contacts the heat-weldable sheet The protective layer provided on the surface prevents deformation of the surface of the heating element that contacts the heat-weldable sheet, and in combination with the protective layer provided on the opposite surface, suppresses deformation (deflection) of the entire heating element. it can.

  In the heat sealing apparatus of the present invention, the protective layer is provided on the surface side in contact with the heat-weldable sheet, and the protective layer is formed of diamond-like carbon.

  Since diamond-like carbon has high hardness, the deformation of the heating element is surely suppressed, and since the surface of diamond-like carbon can be formed very smoothly and easily, it is provided on the heat-welding sheet side surface of the heating element. As a result, a high-quality heat-sealed portion can be obtained, and furthermore, the charging of the heat-weldable sheet can be prevented from flowing to the heating element by the diamond-like carbon, and the failure of the apparatus can be effectively prevented correspondingly.

  A medicine packaging apparatus according to the present invention includes any one of the above-described heat sealing apparatuses, and is configured so that the heat-welding sheet is used as a medicine packaging section individually divided by the heat sealing apparatus. .

  According to the medicine packaging device having this configuration, the medicine (particularly, tablet) as a container to be put into the heat-weldable sheet is caught between the heater base and the heater cradle via the heat-weldable sheet. However, since the heating element is provided with a hard protective layer, the deformation of the heating element due to the biting is suppressed, and hence the subsequent sealing failure can be effectively suppressed. High quality drug packaging can be manufactured.

  According to the heat sealing apparatus and the medicine packaging apparatus according to the present invention, since the heating element is formed in a thin plate shape, the time until the heating element reaches the temperature necessary for heat sealing can be shortened, and the heating element Since a hard protective layer is provided, even if the material to be put into the heat-weldable sheet is caught between the heater base and the heater cradle via the heat-weldable sheet, It is possible to suppress the deformation of the heating element due to the above, and to effectively suppress the sealing failure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, a case where the heat sealing apparatus is incorporated in a medicine packaging apparatus will be described as an example. Here, the configuration of the medicine packaging device 100 will be described based on the schematic configuration diagram of FIG. 1, and the schematic configuration of the heat seal device 1 will be described based on the schematic configuration diagram of FIG. 2.

  As shown in FIG. 1, the medicine packaging device 100 distributes the heat sealing device 1 for heat-sealing the heat-weldable sheet 300, the medicine (powder and / or tablets) every predetermined amount, and A medicine dispensing device 200 that discharges the medicine for each predetermined amount and a medicine supply device 400 that supplies the medicine discharged from the medicine dispensing device 200 to the inside of the heat-weldable sheet 300 are provided. In addition, the code | symbol 60 in a figure is a protective cover which covers the heater stand and heater base which the heat seal apparatus 1 mentions later. The heat-weldable sheet 300 may be a long sheet or a sheet. In the long shape, it is possible to continuously manufacture the medicine packaging part 300A by the heat seal device 1, and in the sheet-like heat-weldable sheet, the packaging part is produced for each sheet. Is generally done. Here, the heat-weldable sheet 300 is illustrated as a long sheet.

  The medicine packaging device 100 includes a gantry member 10 having a support wall 11, a rotatable paper tube drum 20 provided on one side 11 a of the support wall 11, and a heat-weldable sheet attached to the drum 20. Driving means (not shown) for feeding out the heat-weldable sheet 300 from the 300 roll bodies 310.

  In addition, the code | symbol 91-93 in a figure is a guide bar which guides the heat welding sheet | seat 300 drawn | fed out from the roll body 310, and is provided in the chemical | medical agent packaging apparatus 100 as needed or desired.

  FIG. 2 is an enlarged perspective view showing a schematic configuration around the heat seal device 1 (however, the protective cover 60 shown in FIG. 1 is omitted). On the drum 20, a heat-weldable sheet 300 (hereinafter also referred to as “packaging sheet”) 300 is formed by winding a single heat-weldable sheet 300 in a center line along the longitudinal direction and folding the heat-weld surface inward. The rolled body 310 is mounted. In addition, the heat-weldable sheet 300 has, for example, a lower end portion of two heat-weldable sheets in which the heat-weld surfaces are overlapped, in addition to an embodiment in which one heat-weldable sheet is folded in two. Various forms such as an aspect formed by bonding in the longitudinal direction and a form in which a single heat-weldable sheet wound in a roll shape is folded in half at the center line before putting the medicine can also be used.

  The heat-weldable sheet 300 fed out from the roll body 310 is sent out in the direction of arrow X (upstream in the conveying direction) via the guide bars 91, 92, 93. The heat-weldable sheet 300 is not particularly limited as long as the inner surface can be heat-welded, and examples thereof include a laminate of glassine / polyethylene, cellophane / polyethylene, heat-resistant resin / polyethylene, and the like. Reference numeral 40 denotes a conveyance roller for feeding the heat-weldable sheet 300 in the X direction. The delivered heat-weldable sheet 300 is heat-sealed by the heat-sealing device 1 so as to form individual packaging portions 300A300A.

  The heat seal apparatus 1 is disposed on one side of the heat-weldable sheet 300 and sandwiches the heat-weldable sheet 300 with a heater base 5 having a trident seal portion for heating and heat-sealing the heat-weldable sheet 300. The heater base 5 and the symmetrical heater receiver 6 are provided opposite to the heater base 5. The heater base 5 and the heater base 6 are configured to be movable in a direction orthogonal to the heat-weldable sheet 300 (relatively close to and away from each other). The heat-welded surface of the heat-weldable sheet 300 that is moved in the direction to be sandwiched between the two is heat-sealed. Thus, heat sealing is performed so as to form individual packaging portions 300A.

  As shown in FIG. 2 and FIG. 3A, the heater base 5 extends in the width direction of the heat-weldable sheet 300, and has a width seal portion 51 for partitioning the heat-weldable sheet 300 individually, and this width seal. A first seal portion 52 extending in the downstream direction with respect to the upper end of the portion 51 and along the upper end portion of the heat-weldable sheet 300, and closing the upper opening 320 of the heat-weldable sheet 300, and a width seal A second seal portion 53 that extends in the upstream direction with respect to the upper end of the portion 51 and along the upper end portion of the heat-weldable sheet 300, and closes the upper opening 320 of the heat-weldable sheet 300; For example, as shown to Fig.3 (a), it is formed in the front (it is the same also in the back view) substantially T-shape.

  The first seal part 52 and the second seal part 53 have different lengths. For example, the first seal part 52 is formed shorter than the second seal part 53. The heater pedestal 6 is formed and disposed in substantially the same shape as the heater pedestal 5 so as to mirrorly overlap the heater pedestal 5.

  As shown in FIG. 3A, the heating element 7 is provided so as to be exposed and fixed to the inner surface of the heater table 5 (the surface facing the heat-weldable sheet 300). The heating element 7 is a single linear (plate-like) heating member composed of a heating part 71 and terminal parts 72, 72, and is made of stainless steel having a thickness of 0.1 mm or less as a whole, for example. It is formed in a thin plate shape. The heating element 7 includes the heat generating portion 71 that generates heat when energized, and a power supply connecting terminal portion 72 formed at both ends of the heat generating portion 71. According to such a heat generating body 7, it is possible to raise the heat generating body 7 to the temperature required for heat sealing in a very short time by energization.

  The surface of the heating element 7 is coated with diamond-like carbon (DLC) as the protective layer H. Diamond-like carbon is an amorphous carbon hard film mainly composed of hydrogen and carbon. The protective layer H is provided so as to be integrated with at least one of the surface of the heat generating body 7 on the side of the heat-weldable sheet 300 or the surface on the side of the heater base 5 opposite to the surface. In other words, it may be provided on both sides. Furthermore, it is also conceivable to coat only the region where the drug may come into contact via the heat-weldable sheet 300. Alternatively, it is conceivable that the heat generating body 7 is also formed on the side surface forming the thickness. In the case of this embodiment, the protective layer H is coated on the front and back surfaces of the heat-weldable sheet 300 and on the entire surface. In the case where it is considered that the adhesion force between each other may be weakened when diamond-like carbon is directly coated on the heating element 7, it is more reliable by providing an intermediate layer of titanium (Ti) and silicon (Si). It becomes possible to integrate diamond-like carbon into the heating element 7.

  In general, diamond-like carbon is excellent in wear resistance, chemical resistance, corrosion resistance, and insulation, and its surface is a very smooth material with a low coefficient of friction. On the other hand, the heating element 7 can raise the heating element 7 to a temperature necessary for heat sealing in a very short time by energization, and the thickness t of the diamond-like carbon is set so as not to impair this function. In consideration of the thermal conductivity, it is preferable to set the thickness so that the heat of the heating element 7 heated to a necessary temperature is transmitted in a very short time. For example, the thickness t is preferably 1 μm to 20 μm.

  As the protective layer H, ceramic coating such as titanium nitride (TiN), titanium carbonitride (TiCN), titanium / aluminum / nitride (TiAlN), chromium nitride (CrN), etc. can be considered. The thickness when these materials other than diamond-like carbon are used as the protective layer H is the same as that of diamond-like carbon.

  The heat generating portion 71 is disposed so as to pass through the respective seal portions 51, 52, 53 (first and second seal portions 52, 53, width seal portion 51) of the heater base 5. Therefore, in the present embodiment, the heating element 7 directly contacts the heat-weldable sheet 300 and constitutes a sheet heating surface that heats the heat-weldable sheet 300.

  The heat generating part 71 includes a first horizontal part 711, a second horizontal part 712, and a U-shaped part 713. The U-shaped part 713 has a pair of vertical parts 714 and 715 and an inversion part 716. The terminal portion 72 is connected to the end portions of the first horizontal portion 711 and the second horizontal portion 712. For example, the terminal portion 72 for power connection is formed wider than the heat generating portion 71, and the heat generating portion 71 is formed to have a substantially uniform width and thickness.

  The heat generating portion 71 as described above has a configuration including a straight portion and curved portions 85 and 86 connecting the straight portions so as to change the direction of the straight portions. That is, the straight portions include a first horizontal portion 711, a second horizontal portion 712, and a pair of vertical portions 714 and 715 including a U-shaped portion 713. End portions of the first horizontal portion 711 and the vertical portion 714 are connected to each other via the curved portion 85. End portions of the second horizontal portion 712 and the vertical portion 715 are connected to each other via the curved portion 86. More specifically, the one side edge 711a of the first horizontal portion 711 and the one side edge 714a of the vertical portion 714 are connected by the inner diameter side edge 85a of the curved portion 85, and the other side edge 711b of the first horizontal portion 711 is connected. The other side edge 714 b of the vertical part 714 is connected by the outer diameter side edge 85 b of the curved part 85. The one side edge 712a of the second horizontal portion 712 and the one side edge 715a of the vertical portion 715 are connected by the inner diameter side edge 86a of the curved portion 86, and the other side edge 712b of the second horizontal portion 712 and the vertical portion 715 are connected. The other side edge 715 b is connected by the outer diameter side edge 86 b of the bending portion 86. As a result, the curved portion 85 is formed in an arc shape around a center point (not shown) having a predetermined radial width. The curved portions 86 are each formed in an arc shape around a central point (not shown) having a predetermined radial width. Further, the vertical portions 714 and 715 are connected to each other via the reversing portion 110 (another bending portion 99).

Both terminal portions 72, 72 of the heating element 7 are arranged so as to protrude outward from the front ends of the first seal portion 52 and the second seal portion 53 of the heater base 5. Therefore, the line shape of the heat generating part 71 continuous between the two terminal parts 72 and 72 starts from one terminal part 72, extends along the first seal part 52 of the heater base 5, and the width seal part 51 The upper end is bent approximately 90 degrees downward via the bending portion 85 to reach the lower end of the width seal portion 51, where the bending is reversed via the inversion portion 110, and the width seal portion 51 of the heater base 5 is It extends to the upper end side, bends approximately 90 degrees at the upper end of the width seal portion 51 via the curved portion 86, extends along the second seal portion 53, and continues to the other terminal portion 72.
Thus, the line shape of the heat generating portion 71 has a substantially U-shaped U-shaped portion 713 extending in the width direction of the packaging sheet, and one end portion of the first horizontal portion 711 and one end portion of the U-shaped portion 713. Are connected, and one end of the second horizontal portion 712 and the other end of the U-shaped portion 713 are connected.

  Further, as shown in FIG. 3B, a heat insulating layer 8 such as a heat resistant foamed resin sheet is interposed between the heat generating portion 71 and the inner surface of the heater base 5. 8, and the heat insulating layer 8 and the inner surface of the heater base 5 are bonded with a heat-resistant adhesive. By interposing the heat insulating layer 8 in this manner, the heater base 5 does not reach a high temperature, so that, for example, a burn due to contact with the outer surface of the heater base 5 can be prevented, and the heater base 5 has a relatively low heat resistance. It can also be made of a material. In the case where the protective layer H is provided only on the surface of the heat generating body 7 on the heat-weldable sheet 300 side, the heat generating body 7 is directly fixed to the heat insulating layer 8.

  Further, a temperature sensor 9 (a thermistor is used in this embodiment, but various sensors such as a thermocouple can be used as long as the temperature can be detected) is provided in a part of the heat generating portion 71. ing. The temperature sensor 9 is interposed between the heat generating portion 71 and the heat insulating layer 8 and is connected to a control circuit (power source) provided in the heat sealing apparatus 1. This control circuit is, for example, a control unit that is disposed at an appropriate location (not shown) of the casing of the packaging device 1 shown in FIG. 1 and controls the current supplied to the heating element 7 of the heater base 5. .

This control circuit has at least a function of raising the temperature of the heating element 7 to at least two temperatures of a seal temperature and a temperature different from the seal temperature.
The sealing temperature is appropriately set according to the type of the heat-welding sheet 300 to be used, and is about 80 to 130 ° C., for example, 100 to 110 in the case of glassine / low density polyethylene. In the case of cellohan / low density polyethylene, the temperature is set to about 120 to 130 ° C.

  The temperature different from the seal temperature is, for example, a temperature that is lower than the seal temperature and does not cause a burn immediately when touched by the hand (for example, about 50 to 60 ° C.), and is higher than the seal temperature and adhered to the heat generating part. Examples thereof include a temperature at which the material can be melted (for example, about 140 to 190 ° C.), a temperature that is higher than the seal temperature and that can carbonize deposits attached to the heat generating portion (for example, 400 ° C. or more).

  The heating element 7 in the present embodiment is set by a control circuit so as to increase the temperature to two kinds of temperatures, that is, a sealing temperature of 80 to 130 ° C. and a carbonization temperature of 400 ° C. or more. The user can change the temperature of the heating element 7 as desired through an operation panel (not shown) provided in the case. The temperature of the heating element 7 can be changed to two or more combinations of the seal temperature and the carbonization temperature, the seal temperature and the melting temperature of about 140 to 190 ° C., or the sealing temperature, the melting temperature, and the carbonization temperature. You may do it.

  As shown in FIG. 2, the medicine packaging device 100 having the above-described configuration has an upper opening 320 of the heat-weldable sheet 300 via the hopper 21 of the medicine distribution device 200 on the upstream side of the heat seal device 1. The drug is inserted from. After the medicine is inserted, the heat-weldable sheet 300 is sent to the downstream side by the conveying roller 40 by the length of one package. In the state where the heating element 7 is heated to the seal temperature, the heat-welding sheet 300 is sandwiched between the heater base 5 and the heater receiving base 6 so that the width direction and the longitudinal direction of the heat-welding sheet 300 are heated. Sealed. As a result, a partition seal wall 330 and two-direction closing seal walls 340 and 340 extending perpendicularly to the partition seal wall 330 and extending upstream and downstream are formed in the heat-weldable sheet 300 at a time. By sequentially repeating the insertion of the medicine and the formation of the seal wall, as shown in FIG. 4, the packaging portion 300A in which the medicine is packaged can be continuously manufactured.

  By the way, in the case where the number of tablets inserted from the upper opening 320 of the heat-weldable sheet 300 is relatively large, it is considered that the medicine can protrude from the region to be partitioned as the packaging part 300A and can be installed. . In such a case, the medicine (tablet) is sandwiched between the heating element 7 of the heater base 5 and the heater receiving base 6 via the heat-weldable sheet 300. Since diamond-like carbon is provided as the protective layer H, even if the drug is sandwiched between the heating element 7 of the heater table 5 and the heater receiving table 6 via the heat-weldable sheet 300, the thin plate-shaped heating element 7 Deformation can be suppressed.

  If the protective layer H is provided only on the surface of the heat-weldable sheet 300 side, even if a force that causes the heating element 7 to bend by a chemical works, it can resist it and suppress the bending deformation of the heating element 7, Local deformation of the heating element 7 can also be suppressed. By providing the protective layer H only on the surface opposite to the surface on the heat-weldable sheet 300 side, even if a force that bends the heating element 7 by the drug is applied, it can resist the heating element 7. Bending deformation can be suppressed. By providing the protective layer H on both the surface on the heat-weldable sheet 300 side and the surface opposite to the surface on the heat-weldable sheet 300 side, deformation of the heating element 7 can be suppressed more reliably. .

  Furthermore, due to the smoothness of the surface of the diamond-like carbon, the protective layer H is pressure-bonded to the heat-weldable sheet 300, so that a good heat seal can be obtained without causing seal spots, that is, without air entrainment.

  Since diamond-like carbon is also excellent in insulation, even if the heat-welding sheet 300 is charged (peeling off) by providing the protective layer H on the surface on the heat-welding sheet 300 side, its charge Can be prevented from flowing to the heating element 7 in the middle of the circuit, and a large current that can damage the electric drive part of the mechanical device can be prevented. The same applies to a ceramic coating such as titanium / aluminum / nitride, silicon nitride, alumina, or silicon carbide other than diamond-like carbon as the protective layer H.

  In addition, since the said heat-sealing apparatus 1 has provided the one heat generating body 7 with respect to the one heater stand 5, it can carry out heat generation control of this heat generating body 7 with one control circuit. Since the heating element 7 is disposed so as to pass through the entire substantially T-shaped seal portion of the heater base 5, the heating element 7 is controlled by one system control circuit (so as to have a predetermined temperature such as a sealing temperature). It is possible to heat-seal the heat-weldable sheet 300 in three directions at a time without generating seal spots simply by controlling the above.

  When heat sealing is performed for a long time, a part of the heat-weldable sheet 300 such as a part of the heat-weldable resin adheres and accumulates on the surface (sheet heating surface) of the heating element 7 with time. If heat sealing is performed with the sheet scraps attached in this manner, sealing failure may occur or the resulting packaging unit 300A may become dirty. In such a case, when the heating element 7 is heated to the carbonization temperature, the sheet waste adhering to the heating surface can be carbonized. Then, if electricity supply is stopped and the heating element 7 is cooled to room temperature, the carbonized sheet waste can be easily wiped off.

  In the heat generating part 71, the heat of the heat generating part 71 at the time of heat sealing is taken away by the contact of the heat-weldable sheet 300. Therefore, the region 300a where the heat-weldable sheet 300 does not come in contact tends to become hot. However, in the embodiment of the present invention, the heat radiating part 500 that radiates the heat of the region 300a where the heat-weldable sheet 300 does not come into contact with the reversing part 110 is integrally formed in the reversing part 110 during the packaging operation of the reversing part 110. The heat dissipating part 500 absorbs heat in the region 300a where the heat-weldable sheet 300 does not contact. For this reason, the area | region 300a where the heat welding sheet | seat 300 does not contact does not become high temperature. Therefore, the heater base 5 can be made of a material having relatively low heat resistance.

  In addition, the heat sealing apparatus and the medicine packaging apparatus of the present invention are not limited to the modes exemplified in the above embodiment, and various design changes can be made within the scope intended by the present invention.

  For example, in the above-described embodiment, the line shape of the heat generating portion 71 of the heat generating element is formed so as to extend from the first seal portion 52 of the heater base 5 to the width seal portion 51 and to be inverted and extend to the second seal portion 53. Therefore, the length of the heat generating part 71 passing through the respective parts 51, 52, 53 of the heater base 5 can be shortened, and the temperature of the entire heat generating part 71 of the heat generating body 7 can be easily raised substantially uniformly. The line shape of the heat generating portion 71 of the invention is not limited to this. For example, as shown in FIG. 5, it extends from the lower end of the width seal portion 51 of the heater base 5 to the first seal portion 52, reverses at the tip of the first seal portion 52, and extends to the second seal portion 53. It is also possible to form it so that it is further reversed and reaches the lower end of the width seal portion 51.

  In this case, the inversion part Re is in the first horizontal part 711 and the second horizontal part 712, the terminals 72 and 72 are at the lower ends of the vertical parts 714 and 715, and the terminals 72 and 72 are not in contact with the heat-weldable sheet 300. It is formed in a large area so that the heat of the region 300a can be sufficiently dissipated (the terminals 72, 72 also serve as a heat dissipating part).

The perspective view which shows roughly the chemical | medical agent packaging apparatus with which the heat seal apparatus which concerns on one Embodiment of this invention was integrated. The perspective view which expands and shows schematic structure of the heat seal apparatus periphery shown in FIG. (A) is a front view showing a schematic configuration when the heater base of the heat sealing apparatus shown in FIG. 1 is viewed from the inner surface side, and (b) is a plan view showing a schematic configuration when the heater base is viewed from the upper surface side. Similarly, front view of the medicine package A front view showing a schematic configuration of the heater base as viewed from the inner surface side, which is a modification of the heater base.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Heat seal apparatus, 5 ... Heater stand, 6 ... Heater cradle, 7 ... Heat generating body, 8 ... Heat insulation layer, 9 ... Temperature sensor, 51 ... Width seal part, 52 ... 1st seal part, 53 ... 2nd seal , 71 ... heating part, 72 ... terminal part, 100 ... medicine packaging device, 110 ... reversing part, 200 ... drug dispensing apparatus, 300 ... heat-weldable sheet (packaging sheet), 320 ... upper opening of the packaging part, 400 ... medicine supply device, 711 ... first horizontal part, 711a ... one side edge of the first horizontal part, 711b ... other side edge of the first horizontal part, 712 ... second horizontal part, 712a ... one of the second horizontal part Side edge, 712b ... other side edge of second horizontal part, 713 ... U-shaped part, 714 ... vertical part, 714a ... one side edge of vertical part, 714b ... other side edge of vertical part, 715a ... one of vertical part Side edge, 715b ... other side edge of vertical part, 716 ... inversion part, H ... protective layer

Claims (4)

A heater base and a heater pedestal arranged opposite to the heater base, and a thin plate-like heating element heated by energization of the heat-weldable sheet is provided exposed to the heater base; A heat-sealing sheet is formed by heat-welding the heat-weldable sheets by sandwiching and heating the heat-weldable sheet with the heater cradle, and a packaging part is formed by the heat-seal part so as to accommodate the contents. A heat seal device adapted to
A heat sealing apparatus, wherein a protective layer harder than the heat generating element is provided on at least one of the surface of the heat generating element that contacts the heat-welding sheet or the opposite surface.   The heat sealing apparatus according to claim 1, wherein the protective layer is provided on both the surface of the heating element that contacts the heat-welding sheet and the surface on the opposite side.   The heat sealing apparatus according to claim 1, wherein the protective layer is provided on a surface side in contact with the heat-welding sheet, and the protective layer is formed of diamond-like carbon.   A heat seal device according to any one of claims 1 to 3 is provided, and the heat sealable sheet is configured as a medicine packaging section individually divided by the heat seal device. Drug packaging device.

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