WO2004092017A1

WO2004092017A1 - Method and device for producing package body

Info

Publication number: WO2004092017A1
Application number: PCT/JP2004/005313
Authority: WO
Inventors: Michio Mogami; Tetsurou Yasuike; Shuichi Goto
Original assignee: Idemitsu Unitech Co., Ltd.
Priority date: 2003-04-14
Filing date: 2004-04-14
Publication date: 2004-10-28
Also published as: TW200521034A; JPWO2004092017A1

Abstract

Rotating rollers (13, 14) of a production apparatus (1) suck portions of sheets (23, 24) into recesses (131, 141) shaped in the surfaces of the rollers to form recesses (211, 221) and sandwich the sheets (23, 24) to melt-adhere them. Outside the rollers (13, 14) are arranged heaters (16). A filling material is fed to the recesses (211, 221) from a filling nozzle (171) provided near the place where the sheets are sandwiched by the rollers (13, 14). Cutting means (18) provided in a post-process of the rollers (13, 14) has a pair of rollers (181) from the surface of which punching edges project out.

Description

The law of the specification and its device field

The present invention relates to a method and an apparatus for manufacturing a package. Background

Conventionally, a package for filling a fluid substance such as a viscous seasoning and a liquid chemical has been known. As a method for manufacturing such a package, for example, a method described in Patent No. 2824337 is known.

In this manufacturing method, a container holder holding a plurality of containers is conveyed to fill a container with a filling material, and the container is sealed. However, such a manufacturing method has a problem that the flow of the container must be stopped while the container is being filled with the filler, and the flow is intermittent. In addition, if the container was filled with the filling material, the filling material might overflow during transportation.

Therefore, in order to solve the above problems, a manufacturing method as described in JP-A-11-180401 and JP-A-9-226708 has been proposed. I have. This manufacturing method is a method in which a cylindrical film that is continuously transferred is sealed by a horizontal sealing mechanism and filled.

However, in the manufacturing methods described in Patent Documents 2 and 3, the film must be formed into a tubular shape in advance, and a package cannot be formed from a pair of flat wide sheets. There's a problem. Disclosure of the invention

A main object of the present invention is to provide a manufacturing method and a manufacturing apparatus capable of being filled with a filling material fully, capable of being continuously formed, and capable of forming a package from a flat wide sheet. It is to provide. In the manufacturing method of the present invention, the recesses of a pair of molded bodies each having a recess and a flange formed on the periphery of the recess are opposed to each other, the flange is welded, and a filler is stored in the recess. A method of manufacturing a package body, comprising: forming a sheet of a pair of rotating bodies (forming rollers) having concave portions corresponding to the concave portions on the surface, the sheet being a material roll of the pair of molded bodies; A sheet supply step of continuously feeding, a heating step of heating the sheet by a heating device arranged outside the rotating roller before or after the sheet comes into contact with the rotating roller; A concave portion forming step of forming the concave portion by suctioning a part of the sheet into the concave portion by a suction force generated by vacuum suction means connected to the concave portion; The front end portion in the sheet supply direction is sandwiched and welded by at least a pair of rotating rollers (seal rollers), and the concave portions are arranged to face each other. A welding step of sandwiching and welding by a rotating roller (seal roller); and a recess formed in the sheet by a filling nozzle arranged near the sheet sandwiching portion of the pair of rotating rollers (seal roller). After the leading end portion in the sheet feeding direction is welded by the pair of rotating rollers (seal roller), the trailing end portion of the sheet feeding direction beyond the concave portion is welded by the pair of rotating rollers (seal roller). In the meantime, a filling step of filling the concave portion with the filling material, a pair of rollers (cutting rollers), projecting from the roller surface, and A cutting step of cutting a welded portion of the sheet welded in the welding step by a cutting means having a punching blade having a shape corresponding to the outer shape of the flange portion.

In the present invention, the sheet is welded to each other by forming a concave portion in each sheet on the surface of the pair of rotating rollers (forming rollers) and sandwiching the sheets by the rotating rollers. It is not necessary to mold the package, and the package can be molded from a wide sheet.

Further, in the manufacturing method of the present invention, the rotation roller (seal roller) rotates, the front end portion of the concave portion in the sheet supply direction is nipped and welded, and further, after the concave portions are arranged to face each other, the rear end side The part is pinched and welded. As described above, since the package can be continuously formed with the rotation of the rotating roller, the manufacturing speed can be improved.

Furthermore, a cutting means having a punching blade formed on the surface of a roller (cutting roller) is used. Therefore, by rotating the roller of the cutting means in accordance with the film supply speed, punching of the package can be performed continuously. As a result, the manufacturing speed can be further improved.

In addition, in the manufacturing method of the present invention, after the filling material is supplied to the concave portion, the rear end portion of the sheet feeding direction from the concave portion is welded by a rotating roller (seal roller). The concave portion is immediately completely sealed or the outer periphery in the flow direction is welded even if not completely sealed. Therefore, there is no possibility that the filling material in the concave portion will be spilled in the subsequent process, whereby the filling material can be supplied to the concave portion completely.

Further, in the manufacturing method of the present invention, the filling material is filled by the filling nozzle arranged near the rotating roller (seal roller), and it is possible to prevent the filling material from being spilled when the filling material is supplied.

In the present invention, the sheet is heated from the outside of the rotating roller before or after the sheet comes into contact with the rotating roller (seal roller), and the sheet can be heated to a temperature corresponding to the formation of the concave portion. Even if the heating device is set to a high temperature corresponding to the formation of the recess, the sheet is heated from the outside of the rotating roller, so that the recess formed in the sheet does not weld to the recess of the rotating roller. In addition, the concave portion can be easily separated from the concave portion of the rotating roller.

In addition, by heating the sheet from outside the rotating roller (seal roller), the welded portion of the sheet can be warmed, and the sheet can be reliably welded.

Furthermore, the package manufactured by the manufacturing method of the present invention has a pair of molded bodies in which the concave portion and the flange portion are arranged to face each other, and has a substantially symmetrical structure with respect to the flange portion. Therefore, according to the production method of the present invention, a package having a high design property can be produced.

The shape of the concave portion of the package is arbitrary. For example, the shape in which the concave portions are opposed to each other can be spherical, square, or heart-shaped.

The number of welding rotating rollers (seal rollers) may be one or more. That is, the front and rear ends of the concave portion can be simultaneously sealed with only a pair of rollers. A plurality of rollers may separately seal the package body portion and the filling portion on the rear end side. sand In other words, instead of sealing the outer periphery of the package all at once, use a part of the package for filling, and then seal the filled part again with another downstream roller. You may.

That is, in the manufacturing method of the present invention, the welding at the rear end portion in the sheet feeding direction rather than the concave portion can be completely sealed after the filling material is filled by the rotating roller (the sealing roller or the sealing roller also serving as the forming roller). it can. On the other hand, the following procedure can be adopted as another method.

In the manufacturing method of the present invention, before the filling step, a primary welding step of welding except for a portion for filling a filler in an outer peripheral portion of the concave portion, and after the filling step, And a secondary welding step of welding a portion for filling the filler.

In order to perform such primary welding and secondary welding, two rotating rollers on the upstream side and the downstream side in the sheet supply direction can be used.

In this configuration, the outer peripheral portion of the package is first welded in the primary welding step, but the portion for filling the filler is not welded. Then, in the filling step, the recess is filled with the filling material. At this time, for example, the tip of the filling nozzle is arranged in a region between the rotating roller for the preceding primary welding process and the rotating roller for the subsequent secondary welding, and is formed on the sheet sent from the primary welding process. Is filled in the filled container. As a result, the filling material is filled in a container formed by welding except for a part in the primary welding step, but since the container has an unwelded portion, the filling material is not completely sealed. Unfilled portions are also filled. Subsequently, in the secondary welding step, the unwelded portion of the package is welded. At this time, there is a filler in the unwelded part, and welding is performed so as to block the filler.

This makes it possible to obtain a completely filled package having no hollow portion other than the filler. In the manufacturing method of the present invention, a part of the concave portion of one molded body of the package body on a side of the flange portion is arranged to face a flange portion of the other molded body, and serves as a non-welded portion that is not welded to the flange portion. In the non-welded portion, a notch for opening is formed, and before the sheet is heated in the heating step, the notch forming means arranged in a preceding stage of the pair of rotating rollers makes the one-side cut. Notch forming sheet for forming the notch in a sheet serving as a raw material of the molded article It is' preferable.

By providing the notch forming step, the package manufactured by the manufacturing method of the present invention can be easily opened. For example, when the cut is formed from the outside of the non-welded portion (outside of the package), when the user bends the non-welded portion from the cut to the other molded body side, the package is broken, thereby filling the package. Things can be taken out.

The manufacturing apparatus of the present invention is arranged such that the recesses of a pair of molded bodies having a recess and a flange formed on the periphery of the recess are opposed to each other, the flange is welded, and a filler is stored in the recess. A sheet supply means for continuously supplying a pair of sheets, which is a raw material of the pair of molded bodies, and a vacuum formed on the surface corresponding to the concave portion. A pair of rotating rollers (forming rollers) are formed in the recesses to which the suction means is connected, by suctioning a part of the sheet supplied by the sheet supply means with suction force generated by the vacuum suction means to form the recess. And at least one pair sandwiching and welding the front end portion of the sheet supply direction relative to the concave portion, disposing the concave portions to face each other, and then sandwiching and welding the rear end portion of the sheet supply direction relative to the concave portion. A rotating roller (seal roller), and a heating device that is disposed outside the rotating roller that performs the welding, and heats the sheet from outside the rotating roller before or after the sheet comes into contact with the rotating roller. An apparatus and a rotary roller (seal roller) for performing the welding, which is disposed near the sheet holding portion, and a portion on the leading end side in the sheet feeding direction from a concave portion formed on the sheet is welded by the rotary roller; A filling nozzle for filling the concave portion with the filling material and a pair of rotating rollers disposed after the pair of rotating rollers, before the rear end portion in the sheet supply direction is welded by the rotating roller. Cutting means for cutting the package, the cutting means comprising: a pair of rollers (cutting rollers); And wherein the one having a punching blade having a shape corresponding to the outer shape of the flange portion.

In the present invention, the sheet is formed in advance by forming a concave portion in each sheet on the surface of the pair of rotating rollers (forming rollers), and sandwiching the sheet by the rotating rollers (seal rollers). It is not necessary to form the package into a cylindrical shape or the like, and the package can be formed from a pair of flat wide sheets.

Further, in the manufacturing apparatus of the present invention, the sheet is supplied to the concave portion with the rotation of the rotating roller (seal). The front end portion in the sheet feeding direction is sandwiched and welded, and further, after the concave portions are arranged to face each other, the rear end portion in the sheet feeding direction is sandwiched and welded. As described above, since the package can be continuously formed with the rotation of the rotating roller, the manufacturing speed can be improved. Since the cutting means is a roller (cutting roller) with a punching blade formed on the surface, by rotating the roller of the cutting means in accordance with the sheet supply speed, it is possible to continuously punch the package. it can. Thereby, the manufacturing speed can be further improved. In addition, since the manufacturing apparatus of the present invention has a configuration in which the filling material is supplied to the concave portion and the rear end portion of the sheet feeding direction from the concave portion is welded by at least a pair of rotating rollers (seal rollers), the filling material is filled. After that, the recess is immediately completely sealed, or the outer periphery in the flow direction is welded without completely sealing. Therefore, there is no possibility that the filling material in the concave portion is spilled, so that the filling material can be fully supplied into the concave portion.

Further, since the filling nozzle is disposed near the sheet holding portion of the rotating roller (seal roller), it is possible to prevent the filling material from spilling when supplying the filling material to the concave portion. Further, by allowing the filling nozzle to be inserted into the concave portion during the formation of the concave portion, even if the nozzle is thick, it can be inserted deeply into the container, and it is easy to cope with a filling material having a high viscosity. Further, in the present invention, the sheet is heated from the outside of the rotating roller before or after the sheet and the rotating roller (seal roller) come into contact with each other, and the sheet is heated to a temperature corresponding to the formation of the concave portion. be able to. For this reason, in a configuration in which the forming roller and the seal roller are used as a single rotating roller, even if the heating device is set to a high temperature corresponding to the formation of the concave portion, the sheet is supplied from the outside of the rotating roller (for forming and sealing). Is heated, so that the concave portion formed in the sheet does not weld to the concave portion of the rotating roller, and the concave portion can be easily peeled off from the concave portion.

In addition, by heating the sheet from the outside of the rotating roller, the welded portion of the sheet can be warmed, and the sheet can be reliably welded.

In the manufacturing apparatus of the present invention, at least one pair of rotary ports for sandwiching and welding the sheet is provided on the upstream side in the flow direction of the sheet, and welds the sheet except for a portion filled by the filling nozzle. A pair of rotating rollers, and a pair of rotating rollers provided downstream of the rotating roller in the flow direction of the sheet to weld the filled portion of the sheet. It is desirable.

With this configuration, the primary welding step and the secondary welding step in the manufacturing method of the present invention described above can be easily realized, and the filling of the filler from the unwelded portion and the complete sealing by the subsequent welding can be easily and reliably realized. .

In particular, using a rotating roller for primary welding and a rotating roller for secondary welding, securing a gap between the unwelded portions of the rotating roller for primary welding, and passing the filling nozzle through to fill The tip of the nozzle is located in the area between the rotating roller for the primary welding process that precedes the rotating roller for the primary welding process and the rotating roller for the secondary welding that follows, and the inside of the container formed on the sheet sent out from the primary welding process Fill the filling. As a result, the filling material is filled into a container formed by welding except for a part in the primary welding process, but since the container has an unwelded portion, the filling material is not completely sealed, Unfilled portions are also filled. Subsequently, in the secondary welding step, the unwelded portion of the package is welded. At this time, there is a filler in the unwelded part, and the welding is performed so as to block the filler.

This makes it possible to obtain a completely filled package having no hollow portion other than the filler. In the manufacturing apparatus of the present invention, a part of the concave portion of one molded body of the package on the side of the flange portion is arranged to face the flange portion of the other molded body, and is not welded to the flange portion of the other molded body. An uncut portion is formed in the non-welded portion, and a notch for opening is formed in the non-welded portion, and the notch is formed in a sheet serving as a raw material of the one molded body in a stage preceding the pair of rotating rollers. Is preferably provided.

In the manufacturing apparatus of the present invention, since the notch forming means for forming the notch is provided before the rotary roller, the notch can be formed in the package manufacturing process. If the notch is formed from the outside of the non-welded part, if the user bends the non-welded part from the notch to the other molded body side, the package will be broken, and the filling material may be taken out. it can. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing a package according to an embodiment of the present invention.

FIG. 2 is a sectional view of the package. FIG. 3 is a schematic diagram showing a production apparatus of the present invention.

FIG. 4 is a schematic view showing a part of the manufacturing apparatus of the present invention.

FIG. 5 is a perspective view showing a modification of the package.

FIG. 6 is a schematic view showing a modification of the manufacturing apparatus. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Structure of package]

FIG. 1 shows a package 2 manufactured by the manufacturing apparatus 1 (see FIG. 3) of the present embodiment.

The package 2 seals, for example, a fluid substance such as a viscous seasoning or a liquid chemical, or a filler 9 (see FIGS. 2 (A) and 2 (B)) such as a granular substance. It is to be stored. As shown in FIG. 2 (A), the package 2 includes a pair of molded bodies 21 and 22 having recesses 2 1 1 and 2 2 1. The recesses 2 1 1, 2 2 1 of the pair of molded bodies 2 1, 2 2 are arranged facing each other, and the flanges 2 1 2, 2 formed on the peripheral edge of the recesses 2 1 1, 2 2 1 22 is welded. In the present embodiment, the shapes of the concave portions 2 1 1 and 2 2 1 are substantially semi-elliptical in cross section, and the shape in which the concave portions 2 1 1 and 2 2 1 are arranged to face each other has a substantially elliptical cross section.

Further, in the present embodiment, the outer shape of the flange portions 2 1 2 and 2 2 2 is a rectangular shape.

A part of the concave portion 2 1 1 of the molded body 2 1 on the side of the flange portion 2 1 2 is arranged so as to face the flange portion 2 2 2 of the other molded body 2 2, and is not welded to the flange portion 2 2 2. The welded portion is 2 11 A.

A cut 211B is formed on the outer surface of the package of the non-welded portion 211A so as to straddle the non-welded portion 211A.

One of the molded bodies 21 as described above is made of a hard material having such a hardness that it does not deform when grasped by hand from the outside of the package 2 in the direction of crushing the concave portion 211. For example, one molded body 21 is composed of a multi-layered sheet mainly composed of polystyrene. The inner layer in contact with filling 9 is low density polyethylene.

The other molded body 22 is made of a flexible material that is deformed by a gripping force. For example, it is composed of a multi-layered sheet mainly composed of polyethylene, and the inner layer in contact with the fluid substance is linear low-density polyethylene.

When removing the filler 9 from such a package 2, the non-welded portion 211A is bent toward the other molded body 22 side. Then, the notch 2 11 1 B is broken to form an opening. Then, when the concave portion 22 1 of the other molded body 22 is gripped and crushed, the concave portion 22 1 of the other molded body 22 is gradually inverted due to the application of the gripping force. As shown in ()), when all of the fillers 9 are taken out, the recesses 22 1 of the other molded body 22 come into close contact with the recesses 21 1 of the one molded body 21. This allows the internal filling 9 to be completely discharged.

[Configuration of manufacturing equipment]

Next, the manufacturing apparatus 1 for manufacturing the above-described package 2 will be described with reference to FIGS.

The manufacturing apparatus 1 includes a pair of sheet supply means 11 for continuously supplying a pair of sheets 23 and 24 serving as a raw material of the molded bodies 21 and 22, and a notch forming means 12. It comprises a pair of rotating rollers 13, 14, a heating device 16, a filling device 17, a cutting means 18, and a collecting device 19. Note that the pair of rotating rollers 13 and 14 of the present embodiment double as the forming roller and the seal roller in the present invention.

Each of the sheet supply means 11 includes a feed roller 11 1. With the rotation of the feed roller 11 1, the sheets 2 3 and 24 are supplied to the surfaces of the rotary rollers 13 and 14, respectively. It is.

The notch forming means 12 is for forming the above-mentioned notch 2 11 B, and is arranged in front of the rotary roller 13. The cut forming means 12 includes a blade 121 for forming the cut 211B, and a receiving portion 122 for receiving the blade 121. The blade 12 1 is disposed on the side of the sheet 23 on the outside of the package, and the receiving portion 122 is disposed on the opposite side of the sheet 23 with respect to the blade 12 1.

The rotating roller 13 to which the sheet 23 serving as the raw material of the one molded body 21 is supplied is made of metal. The roller is formed with a plurality of recesses 131 corresponding to the recesses 211 at predetermined intervals on the outer periphery thereof. The recess 131 is recessed toward the rotation center of the rotating roller 13, and a ventilation hole 132 extending in the direction of the rotation center of the rotating roller 13 is formed at the bottom of the recess 131. The ventilation hole 132 communicates with a tube 133 passing through the rotation shaft of the rotating roller 13, and the tube 133 is connected to a vacuum pump 134 as vacuum suction means. The rotary roller 14 to which the sheet 24 serving as the material roll of the other molded body 22 is supplied is also made of metal, similarly to the rotary roller 13, and has a plurality of recesses 141 corresponding to the recesses 221 on the outer periphery thereof. It is formed at intervals. As in the case of the rotating roller 13, a ventilation hole 132 is formed at the bottom of the recess 141, and the ventilation hole 132 communicates with a tube 133 passing through the rotation axis of the rotation roller 14, and the tube 133 is evacuated. Connected to pump 134. Such a pair of rotating rollers 13 and 14 are arranged to face each other, and as will be described in detail later, a part of the sheets 23 and 24 is sucked into the recesses 131 and 141 by the suction force generated by the vacuum pump 134. Then, the recesses 211 and 221 are formed, and the sheets 23 and 24 are sandwiched and welded.

Although not shown, for example, a heating device such as a heater is disposed inside the rotating rollers 13 and 14, and the surfaces of the rotating rollers 13 and 14 are heated by the heating device. The heating temperature of this heating device is set to a temperature suitable for welding the flange portions 212 and 222, for example, a temperature higher than the melting point of the inner layers of the sheets 23 and 24 (the layers to be welded to each other). .

The rotation speed of the rotating rollers 13 and 14 as described above is a speed corresponding to the sheet supply speed by the sheet supply unit 11.

The heating device 16 is disposed outside the rotating rollers 13 and 14 (on the surface side of the rotating rollers 13 and 14), and heats the sheets 23 and 24 supplied to the rotating rollers 13 and 14. The heating device 16 is provided along the longitudinal direction of the rotating rollers 13 and 14, and covers a part of the surface of the rotating rollers 13 and 14, for example, an area of 14 or more of the surface of the rotating rollers 13 and 14. Covering. Therefore, the heating device 16 heats the sheets 23 and 24 in contact with the rotating rollers 13 and 14 over a wide area.

The heating temperature of the heating device 16 is such that a part of the sheets 23 and 24 is brought into close contact with the recess 131, A temperature suitable for forming the concave portions 211 and 221 in the sheets 23 and 24, for example, is set to a softening point of the sheets 23 and 24.

Here, as the heating device 16, for example, heat and the like can be cited.

In the present embodiment, the heating device 16 is disposed on the surface side of the rotating rollers 13 and 14 and heats the sheets 23 and 24 supplied to the rotating rollers 13 and 14. , 14 (before contacting the rotating rollers 13, 14) may be heated. That is, a heating device may be arranged between the rotating rollers 13 and 14 and the cut forming means 12. In this case, a heating device may be arranged on both sides of the sheets 23 and 24 so as to sandwich the sheets 23 and 24, or a heating device may be arranged only on one side of the sheets 23 and 24 .

The filling device 17 supplies the filling material 9 to the concave portions 211 and 221 formed in the sheets 23 and 24, and includes a filling nozzle 171 and a pump 1 for supplying the filling material 9 to the filling nozzle 171. Ί 2

The filling nozzle 171 is disposed near the sheet holding portion of the rotating rollers 13 and 14, and its tip portion is used to fill the concave portions 211 and 221 with the concave portions 211 and 221 when filling the filler 9. Located in the central part of.

From the filling nozzle 171, after the front end portion in the sheet feeding direction with respect to the concave portions 211 and 221 formed in the sheets 23 and 24 is welded by the pair of rotating rollers 13 and 14, the concave portions 211 and 221 Also, the filler 9 is supplied to the recesses 211 and 221 until the rear end portion in the sheet supply direction is welded by the pair of rotating rollers 13 and 14.

The filling nozzle 171 is provided with a valve 173 for adjusting the supply amount of the filling 9.

The cutting means 18 is disposed downstream of the rotating rollers 13 and 14, and in this embodiment, is disposed below the rotating rollers 13 and 14.

The cutting means 18 includes a pair of rollers 181. As shown in FIGS. 4A and 4B, a recess 182 for accommodating the recesses 211 and 221 is formed on the surface of the roller 181. In addition, an annular punching blade 183 projecting from the surface of the roller 181 is provided around the portion where the concave portion 182 is formed. This punching blade The outer shape of 183 corresponds to the outer shape of flange portions 212 and 222 of package 2. As shown in FIG. 4 (B), the punching blades 183 are arranged to face each other with the rotation of the pair of rollers 181, whereby the flanges 212 of the package 2 are separated from the pair of welded sheets 23 and 24. , 222 are punched out.

As shown in FIG. 3, the punched package 2 flows on a rail 150 arranged below the cutting means 18 and is collected in a collection box 151 installed at the end of the rail 150.

The rotation speed of the roller 181 of the cutting unit 18 is a speed corresponding to the sheet supply speed of the sheet supply unit 11.

The collecting device 19 winds and collects the sheets 23 and 24 from which the package 2 has been punched, and includes a winding roller 191. In the present embodiment, it is arranged below the cutting means 18.

Next, a method of manufacturing the package 2 using the manufacturing apparatus 1 as described above will be described. First, the sheets 23 and 24 are supplied to the rotating rollers 13 and 14 by the sheet supplying means 11 (sheet supplying step). Before the sheets 23 and 24 reach the rotating rollers 13 and 14, the notches 211B are formed at predetermined intervals in the sheet 23 by the notch forming means 12 (a notch forming step).

When the sheets 23 and 24 are supplied to the surfaces of the rotating rollers 13 and 14, respectively, the sheets 23 and 24 are heated by the heating device arranged inside the rotating rollers 13 and 14 and the heating device 16 arranged outside the rotating rollers 13 and 14. It is heated (heating step).

Further, the air in the depressions 131 and 141 is sucked from the ventilation holes 132 of the depressions 131 and 141 of the rotating rollers 13 and 14 by the operation of the vacuum pump 134. Then, the suction force generated by the vacuum pump 134 causes a part of the sheets 23, 24 to be sucked into the recessed portions 131, 141, whereby the recesses 211, 221 are formed (recess forming step). Further, as the rotating rollers 13 and 14 rotate, first, a portion on the leading end side in the sheet supply direction with respect to the concave portions 211 and 221 is nipped and welded by the rotating rollers 13 and 14. Thereafter, the concave portions 2 11 and 221 are arranged to face each other, and further, with the rotation of the rotating rollers 13 and 14, a portion on the rear end side in the sheet feeding direction with respect to the concave portions 211 and 221 is sandwiched and welded to complete the concave portions 211 and 221. It is sealed (welding process). After the portions on the leading end side in the sheet supply direction from the recesses 211 and 221 are sandwiched by the rotating rollers 13 and 14, the portions on the trailing end side in the sheet supply direction from the recesses 211 and 221 are placed on the rotating rollers 13 and 14. Until being sandwiched, the filling material 9 is supplied from the filling nozzle 171 to the concave portions 211 and 221 (filling step). This filling may be performed continuously or intermittently.

Next, the welded sheets 23 and 24 are supplied to the cutting means 18. The concave portions 211 and 221 are housed in the concave portion 182 formed in the roller 181, and the peripheral portions of the concave portions 211 and 221 (the outer periphery of the flange portions 212 and 222) are punched out (cutting step). Thereby, the package 2 can be obtained.

Then, the package 2 is collected in the collection box 151 as described above, and the sheets 23 and 24 from which the package 2 is punched are collected in the collection device 19.

Therefore, according to the present embodiment, the following effects can be obtained.

(1) The recesses 211 and 221 are formed in the sheets 23 and 24 on the surfaces of the pair of rotating rollers 13 and 14, and the sheets 23 and 24 are sandwiched by the rotating rollers 13 and 14 to be welded. Therefore, it is not necessary to form the sheets 23 and 24 into a tubular shape or the like in advance, and the package 2 can be formed from the wide and flat sheets 23 and 24.

(1-2) Also, with the rotation of the rotating rollers 13 and 14, the leading end portions of the concave portions 211 and 221 in the sheet feeding direction are nipped and welded, and furthermore, after the concave portions 211 and 221 are arranged to face each other, the rear end is formed. The side parts are pinched and welded. As described above, in the present embodiment, since the package 2 can be continuously formed with the rotation of the rotating rollers 13 and 14, the manufacturing speed can be improved.

(1-3) Since the cutting means 18 for punching the package 2 from the sheets 23 and 24 has the punching blade 183 formed on the surface of the roller 181, the cutting means 18 depends on the supply speed of the sheets 23 and 24. By rotating the roller 181, the package 2 can be punched continuously. Thereby, the manufacturing speed can be further improved.

(1-4) Further, in the present embodiment, after the filler 9 is supplied to the recesses 211 and 221, the rear end portion of the sheet feeding direction from the recesses 211 and 221 is welded by the rotating rollers 13 and 14. Therefore, the recesses 211 and 221 should be sealed immediately after filling with the filling material 9. It becomes. Therefore, there is no possibility that the filling material 9 in the concave portions 211 and 221 will be spilled in the subsequent process, and thus the filling material 9 can be fully supplied into the concave portions 211 and 221.

(1-5) Further, since the filling nozzle 171 is disposed near the rotating rollers 13 and 14, it is possible to prevent the filling material 9 from spilling during supply.

(6) When the heating device is disposed only inside the rotating rollers 13, 14, the heating devices inside the rotating rollers 13, 14 make the sheets 23, 24 in the recesses 131, 141 into the concave portions 211, 221. In some cases, it is difficult to sufficiently heat the sheet to a temperature corresponding to the molding, and the recesses 211 and 221 cannot be formed in the sheets 23 and 24 in some cases.

In contrast, in the present embodiment, since the heating device 16 is disposed outside the rotating rollers 13 and 14, the heating devices 16 can heat the sheets 23 and 24 to a temperature corresponding to the formation of the recesses 211 and 221. As a result, the concave portions 211 and 221 can be reliably formed. Further, since the heating device 16 is disposed outside the rotating rollers 13 and 14, even if the heating device 16 is set to a high temperature according to the formation of the concave portions 211 and 221, the concave portions 131 of the rotating rollers 13 and 14 can be used. , 141 are not welded to the recesses 211, 221 and the recesses 211, 221 can be easily separated from the recesses 131, 141.

In addition, since the heating device 16 is disposed outside the rotating rollers 13 and 14, the welded portions of the sheets 23 and 24 can be warmed and can be reliably welded. In particular, in the present embodiment, since the heating device 16 has a structure that also covers 1Z4 or more of the surface of the rotating rollers 13 and 14, the welded portions of the sheets 23 and 24 can be reliably heated.

(1-7) Further, the package 2 manufactured in the present embodiment has the concave portions 211 and 221 and the flange portions 212 and 222 opposed to each other. It is almost symmetrical up and down. Therefore, in the manufacturing method and the manufacturing apparatus 1 of the present embodiment, the package 2 having high designability can be obtained.

(1-8) In the manufacturing apparatus 1 of the present embodiment, since the notch forming means 12 for forming the notch 211B is arranged at the previous stage of the rotating rollers 13 and 14, the notch 211B is formed in the package manufacturing process. Can be formed.

It should be noted that the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved. In the above-described embodiment, the package 2 manufactured by the manufacturing apparatus 1 cuts the non-welded portion 211A with the cut 211B and opens the package.However, the manufacturing apparatus of the present invention includes: The present invention is not limited to the production of such an open package 2. For example, as shown in FIG. 5, the unsealed package 4 is manufactured by peeling off the welded flange portions 4 1 2 and 4 2 2 of one molded body 41 and the other molded body 42. Manufacturing apparatus. At the corners of the flanges 4 12 and 4 22 of the package 4, tabs 4 12 A and 4 22 A which are not welded to each other are formed. , 4 22 A is thighed and peeled off, and the package 4 is opened.

In this case, instead of the notch forming means, a tab forming means for forming a tab in the manufacturing apparatus may be provided.

Further, in the above-described embodiment, the manufacturing apparatus 1 includes the cut forming means 12, but may be configured not to include the cut forming means 12. For example, when the cut is formed in a separate step after the production of the package, the cut forming means 12 is unnecessary.

Furthermore, in the above-described embodiment, the cuts 211B are formed on the outer surface of the package of the non-welded portion 211A, but the cuts may be formed on the inner surface of the package of the non-welded portion 211A.

Further, in the above embodiment, the heating device provided outside the rotary rollers 13 and 14 is only the heating device 16. However, the present invention is not limited to this, and the heating device 30 for preheating as shown in FIG. May be used. The heating device 30 for preheating is arranged so that the sheets 23 and 24 are sandwiched between the rotating rollers 13 and 14 and the cut forming means 12. By providing such a heating device 30 for preheating, the concave portions 2 1 1 and 2 2 1 can be reliably formed in the sheets 23 and 24.

Further, as shown in FIG. 6, a seal drum 31 which is a pair of rotary rollers may be disposed at a stage subsequent to the pair of rotary rollers 13 and 14. The surface of the seal drum 31 has a recess 311 corresponding to the recesses 2 1 1 and 2 2 1. By arranging such a seal drum 31, the welded portions of the sheets 23, 24 can be more firmly and reliably welded, and the timing of the weld seal is different from that of the rotating rollers 13, 14. As a result, the sealing of the filling material 9 can be reliably performed.

Further, in the above embodiment, the pair of rotating rollers 13 and 14 are formed by the forming roller and the seal roller. Although these functions are completely used, these functions may be partially independent.

That is, in FIG. 6, the rotating rollers 13 and 14 form the recesses 2 11 and 2 21 and weld the outer periphery of the package in the flow direction, and the portion for filling the filling 9 is not welded. (Primary welding process). In this case, in the filling step, the filling 9 is not completely sealed, and a part of the filling 9 moves to the subsequent seal drum 31 and the portion where the filling 9 is present in the unwelded portion (the filling Welding is performed (so as to block the object 9) (secondary welding step). This makes it possible to obtain a completely filled package having no hollow portion other than the filler 9.

When performing such welding, it is desirable that the cross-sectional shape of the unwelded portion of the opposing portions of the rotating rollers 13 and 14 be slightly flat in consideration of the welding property. Then, the gap between the portions of the rotating rollers 13 and 14 that are not to be welded is set to be as large as possible, and the filling nozzle 1 is passed through this gap, and the tip of the rotating roller 13 is , 14 and the seal drum 31. Due to the filling nozzle 17 1 extended in this way, the filling 9 becomes a container formed by primary welding by the rotating rollers 13, 14, that is, an intermediate portion between the side and the cross direction of the sheet flow direction. The part excluding the part is filled inside the welded container. Then, the filling material 9 spreads throughout the container by the filling pressure from the filling nozzle 171, and a part of the filling material 9 enters the unwelded portion. In this state, if the secondary welding by the seal drum 31 is performed, the above-mentioned complete filling by the interruption of the filling 9 is performed.

Therefore, according to this method, most of the seal (primary welding) for forming the package body, the filling of the filler 9 and the seal (secondary welding) for complete sealing are separated from each other. Therefore, continuous manufacturability, completeness of welding, and complete filling of 100% can be simultaneously and easily achieved.

Further, the shape of the package manufactured by the manufacturing method of the present invention is not limited to the shape of the package 2 of the embodiment. For example, in the above-described embodiment, the shape in which the concave portions 211 and 221 are opposed to each other has a substantially elliptical cross-section, but may have a rectangular cross-section, or may have an octagonal cross-section. Further, in the above-described embodiment, the outer shape of the flange portions 212 and 222 is a rectangular shape. However, the present invention is not limited to this. For example, the outer shape may be a circular shape. Industrial applicability The present invention relates to a method and an apparatus for manufacturing a package, and can be used for manufacturing a package for filling a fluid substance such as a viscous seasoning and a liquid chemical.

Claims

The scope of the claims

1. A package in which a pair of molded bodies each having a concave portion and a flange portion formed on the periphery of the concave portion are arranged so as to face each other, the flange portion is welded, and a filler is stored in the concave portion. The method of manufacturing

A sheet supply step of continuously supplying a sheet serving as a raw material of the pair of molded bodies to a pair of rotary roller surfaces having depressions corresponding to the recesses formed on the surface thereof;

A heating step of heating the sheet by a heating device disposed outside the rotating roller before or after the sheet and the rotating roller come into contact with each other;

A concave part forming step of forming a concave part by suctioning a part of the sheet into the concave part by a suction force generated by vacuum suction means connected to the concave part of the rotating roller;

After the concave portion formed in the concave portion forming step, the front end portion in the sheet supply direction is sandwiched and welded by a pair of rotary holes, the concave portions are arranged to face each other, and then the rear end side in the sheet supply direction than the concave portion. A welding step of sandwiching and welding the portions by at least a pair of rotating rollers; and a filling nozzle arranged near the sheet sandwiching portion of the pair of rotating rollers, whereby the leading end of the sheet in the sheet feeding direction is more advanced than the recess formed in the sheet. After the side portions are welded by the pair of rotating rollers, the filling of the recesses with the filling material is performed until the portion on the rear end side in the sheet feeding direction with respect to the recesses is welded by the pair of rotating rollers. Process and

The welding portion of the sheet welded in the welding step is cut by cutting means having a pair of rollers and a punching blade having a shape corresponding to the outer shape of the flange portion of the package body, which protrudes from the roller surface. And a cutting step.

2. The method according to claim 1,

In the welding step, before the filling step, a primary welding step in which the outer peripheral portion of the concave portion is welded excluding a portion for filling the filler, and after the filling step, the filler is filled. A second welding step of welding a portion for welding.

3. In the manufacturing method according to claim 1 or claim 2,

A part of the concave portion of one molded body of the package on the side of the flange portion is opposed to the flange portion of the other molded body, and is a non-welded portion that is not welded to this flange portion. A notch for opening is formed in the welded part,

Before the sheet is heated in the heating step, a notch forming step of forming the notch in a sheet serving as a raw material of the one molded body is provided by a notch forming unit disposed in a preceding stage of the pair of rotating rollers. A manufacturing method characterized in that:

4. A package in which a pair of molded bodies each having a concave portion and a flange portion formed on the periphery of the concave portion are arranged so as to face each other, the flange portion is welded, and a filler is stored in the concave portion. Manufacturing equipment,

A sheet supply unit for continuously supplying a pair of sheets, which is a raw material of the pair of molded bodies, and a vacuum formed in a surface corresponding to the recess and connected to a vacuum suction unit. A pair of rotating rollers that form the concave portion by sucking a part of the sheet supplied by the sheet feeding unit with a suction force generated by the suction unit;

At least one pair of rotations that sandwich and weld the front end portion of the sheet supply direction with respect to the concave portion and dispose the concave portions to face each other, and then sandwich and weld the rear end portion of the sheet supply direction with respect to the concave portion. Laura and

A heating device that is arranged outside the rotating roller that performs the welding and that heats the sheet from outside the rotating roller before or after the sheet comes into contact with the rotating roller;

The rotary roller that performs the welding is disposed in the vicinity of the sheet sandwiching portion, and a portion in a sheet supply direction front side with respect to a concave portion formed in the sheet is welded by the rotary roller. A filling nozzle for filling the concave portion with the filler before the rear end portion is welded by the rotating roller;

Cutting means arranged at a stage subsequent to the pair of rotating rollers, for cutting a welded portion of the sheet,

The cutting means comprises a pair of rollers, and a punching blade protruding from the surface of the rollers and having a shape corresponding to the outer shape of the flange portion of the package.

5. The manufacturing apparatus according to claim 4,

At least one pair of rotating rollers for sandwiching and welding the sheet, the flow direction of the sheet A pair of rotating rollers provided on the improvement flow side to weld the sheet while leaving a portion filled by the filling nozzle; and a sheet filling portion provided downstream of the rotating roller in the sheet flow direction. And a pair of rotating rollers for welding the two.

6. In the manufacturing apparatus according to claim 4 or claim 5,

A part of the concave portion of one molded body of the package on the side of the flange is opposed to the flange of the other molded body, and serves as a non-welded part that is not welded to the flange of the other molded body. In this non-welded part, a notch for opening is formed,

A manufacturing apparatus characterized in that a cut forming means for forming the cut in a sheet serving as a raw material of the one molded body is disposed at a stage preceding the pair of rotating rollers.