JP2009051523A - Package manufacturing method and package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package manufacturing method for manufacturing a package enhancing the sealability at a sealed end. <P>SOLUTION: The package manufacturing method is equipped with: a filling step St3 for filling a content in a cylindrical film; a drawing step St4 for forming a content absent portion at each predetermined spacing to be flat in the longitudinal direction of the cylindrical film to the cylindrical film filled with the content; a bundling step St5 for bundling the content-absent portions in the direction across the flat surface; a tape member feeding step St6 for superposing a tape member long in the crossing direction with the heat contraction ratio in the longitudinal direction being larger than that in the width direction on the content-absent portion so as to hold the bundled content-absent portions or the content-absent portions to be bundled; and a first sealing step St7 for sealing the content-absent portion with the tape member superposed thereon in the crossing direction together with the tape member to form a seal part sealed on the content-absent portion. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a packaging body manufacturing method and a packaging body, and particularly to a packaging body manufacturing method and a packaging body for a packaging body in which the pressure-resistant strength of a sealed portion is reinforced.

A method of ligating the ends of the tubular film with a metal wire clip as a sealing means when sealing the tubular film filled with contents such as sausage and stick cheese to obtain individual packaging bodies, that is, predetermined A method of crushing a straight wire having a length into a round shape using a mold is known. However, in the method of ligating with a metal wire clip, there is an inconvenience that the metal detector detects the metal wire clip in the product inspection for knowing the presence or absence of a metal foreign object that is difficult to be mixed into the filling. In addition, since the dirty air penetrates between the focused and folded films only by ligation with a wire clip, it is focused after sealing the non-existing part of the cylindrical film, or after the cylindrical film is focused. The method of sealing a part has come to be performed. In such a sealing method, the thickness of the film to be sealed is reduced by forceful bending to be focused on the sealed portion or in the vicinity thereof, or the portion to be sealed by pressing and heating, which is also referred to as a pinhole (hereinafter also referred to as a pinhole). ) May occur. Therefore, the following measures have been tried.
(1) In order to compensate for the thickness of the cylindrical film in the sealed portion, a technique for attaching a reinforcing tape from two directions opposite to the outside of the converging portion has already been disclosed by the applicant of the present invention in Patent Document 3 and Patent Document 4. It has been filed as However, since the surface of the converged cylindrical film is uneven, it may not be possible to obtain a uniform adhesion between the uneven surface and the reinforcing tape, and although there is an effect of compensating for the thickness, there is an effect of suppressing pinholes. Sometimes it was small.
(2) In order to supplement the thickness of the cylindrical film in the sealed portion and to further improve the sealing performance of the end portion of the cylindrical film, a technique for attaching the outer side of the converging portion using a single reinforcing tape is as follows: The applicant of the present invention has already filed as Patent Document 1. However, since the surface of the converged cylindrical film is uneven, it may not be possible to obtain a uniform contact between the uneven surface and the reinforcing tape, and although there is an effect of supplementing the thickness and improving the adhesion, In some cases, the effect of suppressing holes was small.
(3) In order to compensate for the thickness of the cylindrical film at the sealed portion and to further improve the sealing performance at the end of the cylindrical film, the technique of attaching the outside of the converging portion using two reinforcing tapes is as follows: The applicant of the present invention has already filed as Patent Document 2. However, since the surface of the converged cylindrical film is uneven, it may not be possible to obtain a uniform contact between the uneven surface and the reinforcing tape, and although there is an effect of supplementing the thickness and improving the adhesion, In some cases, the effect of suppressing holes was small.
(4) In order to compensate for the thickness of the cylindrical film at the sealed portion and to improve the sealing performance at the end of the cylindrical film, a technique for attaching a U-shape outside the converging portion using a reinforcing tape is The applicant of the present invention has already applied for Patent Document 5. However, since the surface of the converged cylindrical film is uneven, it may not be possible to obtain uniform adhesion between the uneven surface and the reinforcing tape, and although there is an effect of supplementing more reliable sealing properties and thickness, In some cases, the effect of suppressing pinholes was small.

JP 2006-69647 A JP 2006-69648 A JP-A-2005-231539 Japanese Patent No. 2516885 JP 2005-343541 A

  In a package manufactured by a means for compensating the thickness of the tubular film to be sealed and aiming for a sealing property, it is only necessary to attach a reinforcing tape to the converging part and attach the converging part and the reinforcing tape. Since the surface of the formed cylindrical film is uneven, there may be a case where the uneven surface and the reinforcing tape cannot be evenly adhered, the effect of suppressing pinholes may be small, and the package is not sufficiently sealed There has been a long time.

  Then, an object of this invention is to provide the package body manufacturing method and package body which manufacture the package body which improves the sealing performance in the sealed edge part, ie, a convergence part, more.

  In order to achieve the above object, a packaging body manufacturing method as a first aspect according to the present invention is a method of filling a cylindrical film F1 with contents C1 as shown in FIGS. 1, 3, and 5, for example. A step (St3); and a step (St4) of flatly forming the non-existing portion 15b of the content at predetermined intervals in the longitudinal direction of the tubular film F1 with respect to the tubular film F1 filled with the content C1. A focusing step (St5) for focusing the absent portion 15b in a direction crossing a flat surface; a tape member 120 that is long in the crossing direction, and a thermal contraction rate in the longitudinal direction in the longitudinal direction. A tape member supplying step (St6) in which the tape member 120 larger than the ratio is disposed so as to sandwich the converged absent portion 15b or the converged absent portion 15b, and is superposed on the absent portion 15b; To the absent portion 15b and the direction the cross comprises with the tape member 120 seal the first sealing process (St 7) and forming a sealing part 121 which is sealed to the absent portion 15b.

With this configuration, the non-focused portion of the cylindrical film or the non-focused portion that is focused is sealed together with the tape member that is overlapped, and the seal portion that is sandwiched by the tape member to form the seal portion is absent. The package which has in a part is manufactured.
Since the absent part of the package is sandwiched between the tape members and the tape member is formed into a bag shape by the seal, the tape member can suppress the deformation of the absent part even when subjected to the pressure of the contents. And it becomes a package which a pinhole is hard to produce in an absent part. Moreover, since the tape member having a larger heat shrinkability in the longitudinal direction than that in the width direction is used, it is possible to manufacture a package in which pinholes are hard to be formed in the absence of the package.
“Long” means being elongated in the longitudinal direction. Here, it means being elongated in a direction crossing the flat surface of the absent part. The tape member is a tape member formed such that the ratio of the length and width in the longitudinal direction is much larger than 1, and the ratio of the length and width in the longitudinal direction is larger than 1, but close to 1 (for example, 2, 3 Means a material containing a member.

  Moreover, the packaging body manufacturing method as a 2nd aspect which concerns on this invention is a tape member supply process (St6) in the packaging body manufacturing method as a 1st aspect, as shown, for example in FIG.1, FIG3 and FIG.5. ) Is arranged such that one tape member 120 is sandwiched and surrounded by the converged absent portion 15b.

  With this configuration, the absence of the package is sandwiched and surrounded by a tape member whose longitudinal heat shrinkage rate is greater than the width direction heat shrinkage rate, and the tape member is sealed like a bag. Even if the surface of the converged cylindrical film is uneven, it is possible to obtain a uniform adhesion between the uneven surface and the surface of the tape member, and the thickness of the cylindrical film in the portion to be sealed Since this is compensated for, it becomes a package that is hermetically sealed and hardly causes pinholes in the absent portion.

  Moreover, the packaging body manufacturing method as a 3rd aspect which concerns on this invention is a tape member supply process (in the packaging body manufacturing method as a 1st aspect, as shown in FIG.1, FIG3 and FIG.5, for example). St6) arranges the two tape members 120 so as to sandwich the converged absence 15b portion.

  When configured in this way, the absence part of the package is sandwiched between two tape members whose longitudinal heat shrinkage is larger than that in the width direction, and the tape member is formed into a bag shape by a seal. As a result, even if the surface of the converged cylindrical film is uneven, uniform contact between the uneven surface and the surface of the tape member is obtained, and the thickness of the cylindrical film to be sealed is compensated. Therefore, the package has a sealing property and hardly causes pinholes in the absent portion.

  The packaging body manufacturing method as a fourth aspect according to the present invention includes, as shown in FIGS. 1, 3, and 5, for example, a packaging body as one of the first to third aspects. In the manufacturing method; comprising a cutting step (St9) for cutting the tubular film F1; the seal portion 121 is a strip-like welded portion 129-1, 129-2 elongated in the transverse direction, and a welded portion 129-1, 129 -2 between the unwelded portions 128 for cutting and sandwiched between them; the cutting step (St9) cuts the tubular film F1 at the unwelded portions 128.

  If comprised in this way, since a cylindrical film will be cut | disconnected in an unwelded part, a soft part will be formed in the cut location of a package, and the possibility that the cut location of a package will damage other package bodies is reduced. .

Moreover, the packaging body manufacturing method as a 5th aspect which concerns on this invention is any one of a 1st aspect thru | or a 4th aspect, as shown, for example in FIG.3, FIG.5 or FIG.8, FIG. In the package manufacturing method as an aspect, a second sealing step (St8, St18a) is performed to seal the tape members 120, 220 stacked in a direction intersecting the transverse direction so that the tape members 120, 220 are in a crown state or a closed ring state. , St18b).
Typically, the second sealing step seals in a direction perpendicular to the transverse direction so that the stacked tape members are crowned or closed.

  When configured in this way, the tape member stacked (tape member) is sealed so as to be in a crown state or a closed ring state, so even if the surface of the converged cylindrical film is uneven, Since uniform contact with the surface of the tape member is obtained and the thickness of the cylindrical film to be sealed is compensated, the package body is hermetically sealed and hardly causes pinholes at the end.

Moreover, the packaging body manufacturing method as a 6th aspect which concerns on this invention is a packaging body manufacturing method as any one aspect of a 1st aspect thru | or a 5th aspect, The thermal contraction of the longitudinal direction of the said tape member The rate (MD) is 10% to 35%.
If comprised in this way, since the thermal contraction rate of the tape member (tape member) in the longitudinal direction is 10% to 35%, a package body in which pinholes are less likely to be formed at the converged ends of the package body is manufactured. be able to.

  In order to achieve the above object, the packaging body 110 according to the seventh aspect of the present invention is filled with the contents C1 and the end portions 116 are converged, for example, as shown in FIG. 1, FIG. 3, and FIG. A tape member 120 that encloses the end portion 116, is welded to the tubular film F1 at the end portion 116, and seals the end portion 116; And a tape member 120 having a thermal contraction rate larger than the thermal contraction rate in the width direction.

  With this configuration, the end is sandwiched by the tape member, the tape member is welded to the tubular film at the end and the end is sealed, and the end sealed by the tape member is It becomes a package surrounded by a bag. At the converged end portion of the package, the surface of the converged cylindrical film is uneven as a result of being surrounded in a bag shape by a tape member having a thermal contraction rate in the longitudinal direction larger than that in the width direction. However, a uniform adhesion between the uneven surface and the surface of the tape member is obtained, and the thickness of the cylindrical film to be sealed is compensated. Become a body.

Moreover, the packaging body as an 8th aspect which concerns on this invention is a packaging body as a 7th aspect, The thermal contraction rate (MD) of the longitudinal direction of the said tape member is 10% to 35%.
When configured in this way, the tape member has a taper thermal contraction rate in the longitudinal direction of 10% to 35%, so that the package body is less likely to form pinholes at the focused end of the package body. Can do.

Moreover, the packaging body as a 9th aspect which concerns on this invention is a packaging body as a 7th aspect or an 8th aspect, The said tape member is heat-processed after the sealing of the said edge part.
With this configuration, the tape member is heat-treated after sealing the packaged end of the package, so that the tape member has a larger thermal contraction rate in the longitudinal direction than the thermal contraction rate in the width direction. However, since it tightly adheres to the converged end portion, the sealing performance can be further improved.

  According to the first aspect of the present invention, the converged absent portion or the absent absent portion of the tubular film is sealed together with the tape member, and the sealed portion sandwiched by the tape member is formed in the sealed absent portion. A package is produced. The converged end portion of the package is sandwiched between tape members, and the tape member is formed into a bag shape by a seal, so that the deformation of the end portion is suppressed by the tape member even if the pressure of the contents is received. The package has a high sealing property and is unlikely to have pinholes at the end. Further, since a tape member having a larger heat shrinkability in the longitudinal direction than that in the width direction is used, it is possible to manufacture a package body in which pinholes are not easily formed at the focused ends of the package body.

  According to the second invention, the end portion is sandwiched by the tape member, the tape member is welded to the tubular film at the end portion, the end portion is sealed, and the end portion sealed by the tape member is It becomes a package surrounded by a bag. Even if the surface of the converged cylindrical film is uneven, the converged end of the package is surrounded by a bag member with a tape member whose thermal shrinkage in the longitudinal direction is larger than that in the width direction. Since the uniform adhesion between the uneven surface and the surface of the tape member is obtained and the thickness of the cylindrical film to be sealed is compensated, the package has a sealing property and is unlikely to generate a pinhole at the end portion. Become.

  Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same or equivalent devices are denoted by the same reference numerals, and redundant description is omitted.

With reference to the block diagram of FIG. 1, the packaging body manufacturing apparatus 1 which is the 1st Embodiment of this invention is demonstrated. FIG. 1A is a configuration diagram illustrating the overall configuration of the packaging body manufacturing apparatus 1. FIG. 1B is a partial perspective view illustrating the configuration of the focusing device 70, and FIG. 1C is a partial perspective view illustrating the configurations of the ultrasonic welding device 100 and the tape supply device 90.
The up and down on the paper surface of FIG. 1A corresponds to the up and down in the actual vertical direction, and a cylindrical film F1 described later runs so as to flow from top to bottom in the drawing. That is, the upper side is the upstream side in the traveling direction of the tubular film F1 in the filling and packaging operation, and the lower side is the downstream side in the traveling direction. A strip-shaped film F wound in a roll shape is supported as an original fabric 21 so as to be freely rotatable. The belt-like film F drawn out from the original fabric 21 travels while being guided by the guide rollers 22 </ b> A and 22 </ b> B and is guided to the forming plate 11. The original fabric supply device 20 is configured by the original fabric 21 and the guide rollers 22A and 22B. The material of the belt-like film F is preferably a vinylidene chloride resin for heat welding, and may be other olefin resin. Further, the belt-like film may be a single layer or a multilayer.

  The forming plate 11 has a cylindrical shape that opens up and down. In addition, there is a circumferential gap extending in the longitudinal direction at one place in the circumferential direction. The upper end edge of the forming plate 11 is curved and inclined, and the belt-like film F is formed into a continuous cylindrical film F1 having an overlapping portion at the side edge portion by being guided along the inner surface thereof. . A guide tube 12 is suspended below the forming plate 11 on the downstream side, and the tubular film F1 is guided to travel downstream while maintaining its tubular shape.

  The overlapping portion of the tubular film F1 guided by the guide tube 12 is welded while being pressed by the vertical sealing device 13 and is vertically sealed. As the welding means by the vertical seal device 13, ultrasonic welding is suitable, but other than this, resistance heating welding, high frequency dielectric heating welding, laser heating welding, molten resin droplet welding, and other various welding means can be used. . Further, the vertical seal may be a so-called joint-attached seal or an envelope-attached seal.

  In the upper part of the package manufacturing apparatus 1, a filling device 30 including a pump 31 and a nozzle 32 for filling the contents C1 into the vertically sealed cylindrical film F1 is provided. The nozzle 32 is connected to a pump 31 installed above the forming plate 11, and the tip is introduced into the guide tube 12. The tip of the nozzle 32 opens on the downstream side of the vertical sealing device 13. The pump 31 may be installed not in the upper part of the forming plate 11 but in another position where the contents C1 can be appropriately replenished, and connected to the nozzle 32 by a pipe (not shown). In particular, when filling a relatively heavy content C1 such as paste-like food, the paste-like food stored in a container (not shown) installed on the ground is pumped to the position of the nozzle 32 by the pump 31. It is good to supply.

  A feed roller 14 that is a feed device is provided on the downstream side of the guide tube 12 and the nozzle 32. In the feed roller 14, the cylindrical film F1 is filled with the cylindrical film F1 filled with the contents C1 in the vertically sealed cylindrical film F1, and the cylindrical film F1 is pressed while the pair of columnar feed rollers 14 press the contents C1. It is conveyed while narrowing down continuously.

  An ironing device 40 is provided on the downstream side of the feed roller 14. The ironing roller 41 of the ironing device 40 has a cylindrical outer surface extending in the direction perpendicular to the paper surface in FIG. 1, and the length in the perpendicular direction is at least longer than the folding width, and is supported by the arm body 42. . The “folding width” refers to the width when the cylindrical body 15a is flattened, in other words, the half length of the circumferential length of the cylindrical body 15a. The arm body 42 can swing around its one end 42a, and a lateral member 43 is connected to the middle part via a pin or the like. When the pair of lateral members 43 move in the proximity direction, the cylindrical body 15a is narrowed and formed flat by the pair of squeezing rollers 41. When the horizontal member 43 moves backward in the separation direction, the squeezing roller 41 does not narrow the cylindrical body 15a. Thus, the absent portion 15b of the contents C1 is formed in the traveling cylindrical body 15a by a predetermined distance in the traveling direction. The predetermined distance is a distance necessary for the absent portion 15b in order to form an end portion having a sufficient sealing function in the package 110. The ironing device 40 is not limited to a roller as long as the absent portion 15b of the contents C1 can be formed flat on the cylindrical body 15a. For example, the cylindrical body 15a is crushed from both sides by a flat member, and the contents are distributed up and down. It may be something like this. Such crushing is also included in the concept of “squeezing” here.

  An ultrasonic welding device 100 is installed on the downstream side of the ironing device 40. Further, a focusing device 70 having two sets of focusing plates 71 a, 72 a, 71 b and 72 b above and below the ultrasonic welding device 100 is installed together with the ultrasonic welding device 100. Further, a tape supply device 90 that supplies the tape 120 (FIG. 3C) as a tape member that is sealed together with the cylindrical body 15a and reinforces the sealed part to the sealed part is provided at the center of the cylindrical body 15a. It is installed in a direction orthogonal to the ultrasonic welding device 100 and the focusing device 70 when viewed from the axis.

  As shown in the partial perspective view of FIG. 1B, the converging device 70 includes converging plates 71 and 72 (71a and b are collectively referred to as 71 and 72a and b are collectively referred to as 72). The tubular film F1 is sandwiched in the width direction of the flat tubular film F1. The opposing focusing plates 71a (b) and 72a (b) reciprocate close to each other and then away from each other. This reciprocation is performed in a direction orthogonal to the reciprocation of the ironing device 40. That is, in FIG. 1 (a), the focusing device 70 is also drawn so as to reciprocate on the paper surface, but actually it reciprocates in a direction perpendicular to the paper surface. In the converging plates 71 and 72, V-shaped converging grooves 74a, 74b, 75a, and 75b (FIG. 3A) are formed at opposite edges on the tubular film F1 side. When the opposing focusing plates 71 and 72 are close to each other, the left and right focusing plates 71 and 72 are overlapped to form one small space between the bottoms of the respective focusing grooves 74a, b, 75a, and b. If U-shaped notches (not shown) are formed in the groove bottoms of the focusing grooves 74a, b, 75a, b, a circular space is formed between the U-shaped bottoms when the focusing plates 71, 72 come close to each other. Since it is formed, it is preferable.

  In the ultrasonic welding apparatus 100, the horn 50 and the anvil 60 are disposed to face each other with the tubular film F1 interposed therebetween. The ultrasonic horn 50 and the anvil 60 reciprocate in the same direction as the reciprocating movement of the focusing plates 71 and 72. That is, reciprocation in a direction perpendicular to the paper surface of FIG. When the focusing plates 71 and 72 of the focusing device 70 are close to each other, the horn 50 and the anvil 60 are also close to each other. The horn 50 and the anvil 60 seal the absent portion 15b constricted in the direction crossing the flat surface by the converging plates 71 and 72 by narrowing the absent portion 15b and welding the tubular film F1.

  With reference to the partial perspective view of FIG.1 (c) and the partial perspective view of FIG. 3, the tape supply apparatus 90 and the ultrasonic welding apparatus 100 are demonstrated. The tape supply device 90 is a device for supplying a tape 120 (FIG. 3C) for reinforcing a portion to be sealed. The tape supply device 90 is a wound tape (not shown) and a pair of rollers for feeding the tape 120. 93, a cutter (not shown) that cuts the tape 120 into a predetermined length, and a holder 91 that holds the cut tape 120 in a U shape and overlaps the absent portion 15b. In this case, since the tape 120 is held in a U shape by the holder 91, when the tape 120 is viewed vertically from below in the drawing, it appears to be placed in a U shape. The U-shape looks upside down. The predetermined length is a length necessary as a tape material for forming the end portion 116 (FIG. 6) having an appropriate sealing function on the package 110. The surface 94 of the holder 91 that holds the cut tape 120 faces the direction in which the cylindrical body 15a travels, and is formed in a U-shape when viewed from above vertically downward. Is formed with a suction port 92 for sucking air to suck the tape 120. The U-shaped surface 94 indicates that the surface of the holder 91 that faces the cylindrical body 15a is recessed in a U-shape, and is preferably a shape that includes a smooth semicircular or semi-elliptical shape. Yes. The suction port 92 is connected to a suction pump (not shown) and sucks air. When the tape 120 is fed while being rotatably supported by the pair of rollers 93, the holder 91 sucks air from the suction port 92 and sucks the tape 120 against the U-shaped surface 94 by the suction force. Make and hold the shape. The holder 91 holds the tape 120 and protrudes in the direction of the U-shaped surface 94, and overlaps the tape 120 on the absent portion 15b.

  The dimensions and the like of the tape 120 (FIG. 3C) can be appropriately determined according to the design specifications of the package 110, but the width of the tape 120 is preferably 10 to 100 mm and the thickness is preferably 10 to 300 μm. It is. The tape 120 has heat shrinkability, and the heat shrink rate in the longitudinal direction of the tape 120 is 10% to 35%. The thermal contraction rate in the longitudinal direction of the tape 120 is larger than the thermal contraction rate in the width direction (direction perpendicular to the longitudinal direction). A plurality of tapes 120 may be stacked as necessary, and the material of the tape 120 is preferably a vinylidene chloride resin, but may be an olefin resin (the same in the following embodiments). ). Further, the tape 120 may be composed of a single layer or multiple layers, and the material of the tape 120 is preferably the same as the material of the film (that is, a belt-like film or a tubular film), but different materials that can be welded (It is the same in the following embodiments). Here, the heat shrinkage rate refers to the rate of decrease in the length of the specimen due to shrinkage after the specimen is immersed in boiling water for 30 minutes in accordance with JIS Z1709.

  The horn 50 and the anvil 60 are configured by a horn 51 and an anvil 65 having a long crimp surface in the horizontal direction, and a horn 56 and an anvil 66 having a long crimp surface in the vertical direction. The horn 51 and the horn 56 are connected from the horizontal direction to an intermediate position in the vertical direction of the horn 56 so as to form crimping surfaces 51a and 56a each having a T-shaped shape. Similarly, the anvil 65 is connected to an intermediate position in the vertical direction of the anvil 66 from the horizontal direction. The horn 51 and the horn 56, or the anvil 65 and the anvil 66 may be formed by arranging horns or anvils manufactured separately, or may be integrated with each other after being arranged, or may be manufactured integrally. May be. When the thickness of the portion crimped by the horn 51 and the anvil 65 is different from the thickness crimped by the horn 56 and the anvil 66, the horn 51 and the horn 56 are integrated, and the anvil 65 and the anvil 66 are integrated. 51 / horn 56 and anvil 65 / anvil 66 are separated. The horn 51 / horn 56 and the anvil 65 / anvil 66 are arranged apart from each other so that they can be crimped. When the horn 51 and the horn 56 are configured integrally and share an ultrasonic transducer (not shown) that generates ultrasonic vibrations, the anvil 65 and the anvil 66 are separately arranged, and the crimping surface It is preferable to dispose 65a and the crimping surface 66a apart from each other.

  Further, as shown in the perspective view of FIG. 2 (a) and the side view of FIG. 2 (b), the crimping surface 65a of the anvil 65 is formed on the central transverse portion 64 that crosses the central portion thereof and on both sides of the central transverse portion 64. Both end portions 62 that have escaped from the central crossing portion 64, and a recess 63 that is a groove formed between the central crossing portion 64 and both end portions 62. It is preferable that the Chinese character “mountain” is formed in a horizontal shape. Here, when the horn 51 and the anvil 65 come close to each other for pressure bonding (contacted via the object to be welded), the both ends 62 that have escaped from the center transverse part 64 have the center crossing part 64 removed the object to be welded. In contrast to the pressure bonding, the both end portions 62 are not close enough to contact with each other through the object to be welded, and the both end portions 62 are slightly separated from the pressure bonding surface 51a of the horn 51 and are pulled from the pressure bonding surface. Means that. Since the pressure-bonding surface 65a of the anvil 65 includes the central transverse portion 64, both end portions 62, and the depression 63, the seal at the end of the package 110 (FIG. 1A) is reinforced, as will be described later. Becomes higher.

  Hereinafter, the description will be continued with reference to FIG. The horn 51 and the anvil 65 are sealed across the converged absent portion 15b (first seal). On the other hand, the horn 56 and the anvil 66 seal the tape 120 so as to close the U-shaped open part of the tape 120 bent in a U shape when viewed vertically downward from above (FIG. 3C). 2 seal). The horn 56 and the anvil 66 seal the tape 120 slightly outside the focused absent portion 15b (second seal). In place of the ultrasonic welding apparatus 100, a resistance heating welding apparatus, a high frequency dielectric heating welding apparatus, a laser heating welding apparatus, and other various welding apparatuses can be used. In any welding apparatus, a seal (first seal) that traverses the absent portion 15b converged with the tape 120 (first seal) and a seal (second seal) that closes the open portion of the U-shaped tape 120 are applied. Configured as follows. The direction of the sealed portion is defined as the direction of the seal, and the direction of the first seal and the direction of the second seal are determined.

  A cutting device 80 is provided downstream from the focusing device 70, the tape supply device 90, and the ultrasonic welding device 100 by a predetermined interval in which the absent portion 15b is formed, that is, by the length of one package. . The cutting device 80 includes a cutter 81. The cutter 81 is plate-shaped, and a sharp blade portion is provided on the side where the tubular film F1 (the absent portion 15b) to be cut exists. The cutter 81 also reciprocates similarly to the focusing device 70 and the ultrasonic welding device 100. The reciprocating motion of the cutter 81 also reciprocates in the direction perpendicular to the paper surface of FIG. 1A, similarly to the ultrasonic welding device 100 and the focusing device 70. Accordingly, it is preferable to use a common drive device (not shown) for the configuration because the configuration is simplified.

  Further, the focusing device 70, the tape supply device 90, the ultrasonic welding device 100, and the cutting device 80 converge the absent portion 15b while moving downward at the same speed as the cylindrical body 15a is sent downward, and the tape It is preferable to perform a so-called “worship motion (box motion)” in which 120 is supplied to seal and cut, and after cutting, the absent portion 15b is opened and returned to the upper position. Therefore, when the focusing device 70, the tape supply device 90, the ultrasonic welding device 100, and the cutting device 80 are installed on a common gantry (not shown), the configuration is simplified.

  Then, manufacture of the package 110 using the package manufacturing apparatus 1 which is the 1st Embodiment of this invention shown in FIG. 1 is demonstrated. The belt-like film F is pulled out from the original fabric 21 at a predetermined speed, is applied with a predetermined tension by the guide rollers 22A and 22B, is guided to travel, and reaches the forming plate 11. The predetermined speed is a speed at which the belt-like film F can be pulled out without causing wrinkles or the like in the belt-like film F. The predetermined tension is a tension at which the belt-like film F can be welded without causing wrinkles or the like in the belt-like film F.

  The belt-like film F that has reached the forming plate 11 is formed in a cylindrical shape having overlapping portions at the side edge portions, and the overlapping portions are welded by the vertical sealing device 13. In this way, the vertically sealed tubular film F1 is formed. The cylindrical film F1 is filled with the contents C1 from the pump 31 through the nozzle 32. The cylindrical body 15 a filled with the contents C <b> 1 is conveyed downstream by the feed roller 14. The pair of feed rollers 14 are transported with a narrow pressure so that the cylindrical body 15a is locally crushed, but the crushed cylindrical body 15a passes through the position of the feed roller 14 due to the internal pressure of the contents C1. Return to the original cylindrical shape.

  The cylindrical body 15a is intermittently compressed by a pair of squeezing rollers 41 over a predetermined length, and absent portions 15b without the contents C1 are formed at a predetermined interval. The predetermined length is a length necessary for the absent portion 15b in order to form an end portion having an appropriate sealing function in the package.

  Here, focusing, sealing, and cutting of the package will be described with reference to the partial perspective view of FIG. As shown in FIG. 3A, the flattened absent portion 15b is focused by the focusing device 70 in a direction crossing the flat surface. As shown in FIG. 3 (b), the absent portion 15b is gathered together by focusing.

  On the other hand, as shown in the partial perspective view of FIG. 4, in the tape supply device 90, the tape 120 is sent to the holder 91 side while being compressed by the roller 93 (see FIG. 4A), and has a predetermined length. Then, it is cut (see FIG. 4B). The predetermined length is a length of the tape 120 that is longer than the length along the U-shaped surface 94 of the holder 91 and protrudes from the U-shaped surface 94 of the holder 91. The length of the tape 120 protruding from the U-shaped surface 94 is such that the protruding portion does not hang down, but the second sealing is performed at the protruding portion to form the second sealing portion 122. To do. Although it varies depending on the material and thickness of the tape, the thickness is suitably 1 mm or more and 15 mm or less, preferably 3 mm or more, and preferably 10 mm or less. The cut tape 120 is sucked by the suction port 92 of the holder 91 to be formed into a U shape and held (see FIG. 4C). Note that the width of the holder 91 is narrower than the width of the tape 120, and the holder 91 sucks and supports a lower position, not the center of the width of the tape 120. Alternatively, the upper position may be sucked and held.

  Therefore, as shown in FIG. 3C, the U-shaped tape 120 is overlapped on the converged absent portion 15b so as to surround the absent portion 15b. Here, the term “overlapping” means that the tape 120 is brought close to or in contact with the absent portion 15 b so that the converged absent portion 15 b becomes a U-shaped bottom portion of the tape 120. That is, the holder 91 protrudes in the direction of the absent portion 15b.

  Therefore, the tape 120 and the absent portion 15b are sandwiched and welded by the horn 50 and the anvil 60. As shown in FIG. 3D, since the horns 51 and 56 and the anvils 65 and 66 are integrally formed, the first seal and the second seal are applied simultaneously. By these seals, the tape 120 and the absent portion 15b are integrally sealed, and the strip-shaped first seal portion 121 that is long in the direction transverse to the absent portion 15b and the direction perpendicular to the direction transverse to the absent portion 15b A long belt-like second seal portion 122 is formed. Moreover, since the tape 120 and the absent portion 15b are integrally sealed by the first seal, the contents C1 in the longitudinal direction of the cylindrical body 15a and the circulation of air and moisture are sealed. Therefore, the cylindrical body 15 a becomes a hermetic package 110. Further, the tape 120 is sealed in the transverse direction by the first seal, further sealed in the direction perpendicular to the transverse direction by the second seal, and surrounded by the two seals (the first seal and the second seal). By being in the closed ring state, the two bags 123 and 124 opened in the direction of the tubular film F1 filled with the contents C1 are obtained.

The first seal part 121 is long in the same direction sandwiched between two belt-like welded parts 129-1 and 129-2 and a welded part 129-1 and 129-2 that are long in the direction crossing the absent portion 15b. It is formed including a band-like unwelded portion 128 of the layer. An ultrasonic welding device 200 is disposed between the focusing plates 71 and 72 that are spaced apart from each other in the focusing device 70 (FIGS. 7A (a) and 7 (b)). In this ultrasonic welding device 200, the second of the first seal portion 121 is disposed. The width in the sealing direction is constrained so that there is no mechanical interference. Under this restriction, the unwelded portion 128 has a design freedom of preferably 3 mm or less in the second sealing direction, more preferably 1.5 mm or less, and particularly preferably 0.75 mm. The seal is managed.
If the width in the second sealing direction of the unwelded portion 128 exceeds 3 mm, the unwelded portion 128 cannot be cut linearly and in parallel with the first seal direction, and the cut portion is preferably wavy. Absent. When the width is more than 1.5 mm and not more than 3 mm, even when the packaging body 110 vibrates more frequently when the packaging body manufacturing apparatus 1 is operated at a high speed, the vibration is substantially the same as the first sealing direction. Since it is parallel, the cutting part does not have a wavy shape. When the width is 1.5 mm or less, the cut portion can be finished fine, and when the width is 0.75 mm, the cut portion can be finished more cleanly (the same applies to the following embodiments).

  Here, the holder 91 holds the tape 120 not at the center of the width of the tape 120 but at a lower position, and the horn 51 and the anvil 65 seal the center of the width of the tape 120. And the horn 51 or the anvil 65 do not interfere. That is, the horn 51 and the anvil 65 and the holder 91 are installed so as to be shifted in the vertical direction so that there is no mechanical interference. When the tape 120 is sandwiched between the horn 50 and the anvil 60, the holder 91 stops the suction from the suction port 92 and retreats from the periphery of the absent portion 15b. In addition, the 1st seal | sticker by the horn 61 and the anvil 65 and the 2nd seal | sticker by the horn 56 and the anvil 66 may not be performed simultaneously, but may be performed separately, and the 1st seal is performed first. Alternatively, the second seal may be performed first.

  Note that the horn 51 and the anvil 65 are crimped by the tape 120 surrounding and sandwiching the converged absent portion 15b. On the other hand, the horn 56 and the anvil 66 are only bonded to the tape 120. Therefore, what is crimped by the horn 51 and the anvil 65 becomes thicker. Therefore, the pressure-bonding surface 66a of the anvil 66 is made to protrude toward the horn 56 side than the pressure-bonding surface 65a of the anvil 65. When the pressure-bonding surface 66a of the anvil 66 protrudes, a thinner object to be welded (tape 120) is pressure-bonded, and the thicker object to be welded (the converged absent portion 15b and the tape 120) is too large. In addition, it can be pressure-bonded so that the pressure strength is not reduced. The position of the crimping surface may be adjusted on the crimping surface 51 a of the horn 51 and the crimping surface 56 a of the horn 56.

  Here, as shown in the side view of FIG. 2 (c), when the center crossing portion 64, both end portions 62, and the depression 63 are formed on the pressure-bonding surface 65a of the anvil 65, the center crossing portion 64 120 and the absent portion 15b are pressure-bonded, and the melt S melted at that time is accumulated in the recess 63, and the melt S adheres to both sides of the pressure-sealed portion. Therefore, the melt-bonded S on both sides adheres to the part that has been pressure-bonded and sealed, and the thickened part is reinforced to increase the pressure resistance. In addition, the pressure-sealed portion is formed thin as the melt S flows out, and is easily cut by the subsequent cutting device 80.

  As shown in FIG. 3 (e), the cylindrical body 15a is cut by the cutting device 80 after the first seal and the second seal are applied by the ultrasonic welding device 100 (FIG. 1 (c)). The belt-like unwelded portion 128 of the first seal portion 121 is cut linearly so as to trace the unwelded portion 128. At this time, the second seal portion 122 is also simultaneously cut up and down by a line that cuts the unwelded portion 128, and after the cutting, the upper second seal portion 122-1, the lower second seal portion 122-. 2 In addition, the tape 120 is welded to the welded portions 129-1 and -2 of the first seal portion 121 formed by the first seal that seals in the transverse direction, and the second seal that seals in the direction intersecting the transverse direction. Due to the second seal portions 122-1 and -2 formed by the seal, a closed ring state surrounded by two seals (first seal and second seal) is obtained. When the cylindrical body 15a is cut as described above, it becomes a single package 110, which is unloaded from the package manufacturing apparatus 1, and shipped as a product through a necessary heat treatment such as boil or retort. The Further, since the tape 120 is cut at the bottoms of the two bags 123 and 124, each of them forms a bag (closed ring state) surrounding the end portion 116 of the package 110 (see FIG. 6). Note that the heat treatment of the package 110 (FIG. 1A) is performed at a temperature of about 60 to 120 ° C., and the bag-like tape 120 surrounding the end portion 116 (FIG. 6) of the package 110 by this heat treatment. Since the tape 120 has the heat shrinkability described above, the degree of adhesion between the tape 120 and the tubular film F1 is increased, and the sealing performance of the end portion 116 is improved.

  As described above, according to the packaging body manufacturing apparatus 1 according to the first embodiment of the present invention, the sealed portion at the end of the packaging body 110 is surrounded by the bag of the tape 120. When the sealed portion is surrounded by a bag, for example, when the content C1 expands and the tubular film F1 contracts by boiling, the internal pressure is applied to the package 110 by the content C1. The deformation of the sealed portion is restrained by the bag of the tape 120. Therefore, the stress acting on the cylindrical film F1 in the sealed portion is reduced, and the sealed portion 110 becomes a package 110 that is not easily damaged. That is, the pressure strength is increased. Furthermore, in the conventional package (not shown) that seals the tape integrally with the tubular film, in the package heated by boil especially for cooking, the tape is often boiled and the appearance is often impaired. By making the tape 120 into a bag shape, it is possible to prevent wrinkling.

  Further, the tape 120 has heat shrinkability, and the heat shrinkage rate in the longitudinal direction is 10% to 35%. The heat shrinkage rate in the longitudinal direction of the tape 120 is higher than the heat shrinkage rate in the width direction. Since it is large, the constricted end of the package 110 can be securely tightened with the tape 120, and the incidence of pinholes occurring in the sealed portion of the end can be greatly reduced. Since the twist of the supplied tape 120 is small, the tape 120 can be reliably supplied by the tape supply device 90 (FIGS. 1 and 4).

According to the packaging body manufacturing apparatus 1 of the present embodiment, the concentrated absent portion 15b of the tubular film F1 is sealed together with the tape 120, and a sealed portion sandwiched by the tape 120 is formed in the sealed absent portion 15b. The package 110 thus manufactured is manufactured. An end 116 that is a cut seal part of the package 110 is sandwiched between the above-described heat-shrinkable tape 120, and the tape 120 is sandwiched between the first seal part 129-1 and the second seal part 122-1. Even if the surface of the converged cylindrical film F1 is uneven by being formed into a bag shape, a uniform adhesion between the uneven surface and the surface of the tape 120 is obtained, and the cylindrical portion of the portion to be sealed Since the thickness of the film F1 is compensated, the package 110 is hermetically sealed and hardly causes pinholes at the ends.
As an effect, since the unwelded portion 128 is cut, the force applied to the cutting blade is smaller than that in the case of cutting the welded portion 129, so that the cutting can be reliably performed. In addition, the life until the replacement of the cutting blade is extended as a secondary matter. As the cutting blade, a rotary blade, a single blade, a double blade, a push cutting blade, or the like can be used.

  Then, with reference to the flowchart of FIG. 5, FIG. 1, and FIG. 3, the manufacturing method of the package 110 which is the 2nd Embodiment of this invention is demonstrated. Here, although the package body manufacturing apparatus 1 which is the 1st Embodiment of this invention is used, it is not restricted to the package body manufacturing apparatus 1, You may manufacture a package body with what kind of manufacturing apparatus.

  First, the belt-like film F is formed in a cylindrical shape by overlapping the side edges with the forming plate 11 or the like to form the cylindrical film F1 (step St1) (tubular film forming step). By vertically sealing the overlapping portion of the side edge portions of the tubular film F1 (vertical sealing step), the vertically sealed tubular body 15a is formed (step St2) (tubular body forming step). Then, the contents C1 are filled into the tubular body from the nozzle 32 inserted into the tubular body (step St3) (filling step).

  By squeezing the cylindrical body 15a filled with the contents C1, the absent portion 15b having a predetermined length and having no contents is formed flat with a predetermined interval (step St4) (squeezing step). The formed absent portion 15b is focused in a direction along the flat surface (step St5) (focusing step). The tape 120 is supplied, and the tape 120 is overlapped on the absent portion 15b that has been narrowed by focusing (step St6) (tape member supplying step). The tape 120 is U-shaped and is stacked so that there is an absent portion 15b at the bottom. The tape 120 has heat shrinkability, and the heat shrinkage rate in the longitudinal direction is 10% to 35%. The thermal contraction rate in the longitudinal direction of the tape 120 is larger than the thermal contraction rate in the width direction (direction perpendicular to the longitudinal direction).

  At the center of the absent portion 15b in the vertical direction, the absent portion 15b is sealed in the transverse direction together with the tape 120 (first seal) to form the first seal portion 121 (step St7) (first seal step) . By this sealing, the tape 120 and the absent portion 15b are integrated, and the contents C1 in the longitudinal direction of the tubular film F1 and the circulation of air and moisture are sealed. Therefore, it becomes the package 110 with high sealing performance.

  The opened portion of the U-shaped tape 120 is sealed (second seal) to form a second seal portion 122 (step St8) (second seal step). That is, the second seal in the traveling direction of the tubular film F1 causes the tape 120 to be in a closed ring state surrounding the absent portion 15b. Along with the transverse seal (first seal), the tape 120 is in the form of two bags that are open in the direction of the tubular film F1 filled with the contents C1 and whose bottoms are connected. Note that either the first seal or the second seal may be sealed first, or may be sealed simultaneously as described above.

  Next, it cut | disconnects at the 1st seal | sticker site | part 121, and becomes one package body (step St9) (cutting process). Since the first sealed portion is cut, the tape 120 becomes two bags 123 and 124 surrounding the sealed portion at the end.

  During the above operation (steps St1 to St9), the belt-like film F and the tubular film F1 are continuously fed (St10). That is, the tape stack (step St6), the first seal (step St7), and the second seal (step St8) are operated while feeding the belt-like film F and the tubular film F1.

  According to the method of manufacturing the package 110 according to the second embodiment of the present invention described above, the tape 120 surrounds the end portion of the package 110 that is sealed (the first seal and the second seal). By forming the bags 123 and 124, the sealed portion is prevented from being deformed by the internal pressure, and the sealed portion is effectively reinforced. Since the tape 120 has the heat shrinkability as described above, the converging end of the package 110 can be securely tightened by the tape 120, and the occurrence rate of pinholes generated in the sealed portion of the end is greatly increased. Can be reduced. Since the twist of the supplied tape 120 is small, the operation of the tape supply process (step St6) can be performed reliably.

  According to the packaging body manufacturing method of the present embodiment, the converged absent portion 15b of the tubular film F1 is sealed together with the tape 120, and a sealed portion sandwiched by the tape 120 is formed in the sealed absent portion 15b. A package 110 is produced. An end 116 that is a cut seal part of the package 110 is sandwiched between the above-described heat-shrinkable tape 120, and the tape 120 is sandwiched between the first seal part 129-1 and the second seal part 122-1. Even if the surface of the converged cylindrical film F1 is uneven by being formed into a bag shape, a uniform adhesion between the uneven surface and the surface of the tape 120 is obtained, and the cylindrical portion of the portion to be sealed Since the thickness of the film F1 is compensated, the package 110 is hermetically sealed and hardly causes pinholes at the ends.

  Subsequently, a package 110 according to a third embodiment of the present invention will be described with reference to FIG. 6A is a front view of the package 110, FIG. 6B is a diagram (top view) viewed from the direction in which the tubular film F1 of the package 110 is vertically sealed, and FIG. 6C is the package. 110 is a view (side view) of 110 viewed from the longitudinal direction, and (d) and (e) are partial detailed views of the end portion 116 of the package 110. . The cylindrical film F1 enclosing the contents C1 is formed by superimposing the side edges of the belt-like film F and vertically sealing them. Along the vertical seal portion 114, the overlapped excess portion 117 overlaps the tubular film F1. The material of the tubular film F1 is a vinylidene chloride-based resin, but other olefin-based resins may be used, and the tubular film F1 may be a single layer or a multilayer. The package 110 can be manufactured by the package manufacturing apparatus 1 (FIG. 1).

The tubular film F1 has longitudinal ends 116 on the right and left sides in the drawing. First, the right end 116 in the figure will be described.
In the figure, the right end 116 is focused, sealed and surrounded by tape 120. The tape 120 surrounds and sandwiches the converged end portion 116 of the tubular film F1, and the end portion 111 and one side portion 112 of the end portion 116 are sealed to form a bag shape (closed ring state). That is, the narrowed end portion 116 is sandwiched by the tape 120 from the lateral direction (direction perpendicular to the longitudinal direction) of the package 110, and the longitudinal end portion 111 of the package 110 is sealed (first seal). Then, the first seal portion 121-1 is formed, and the one side portion 112 sandwiched and stacked is sealed (second seal) to form the second seal portion 122-1. The first seal portion 121-1 is a strip-shaped unwelded portion 128-1 formed at a location including the end 111 a of the end portion 111, and a strip-shaped contact with the opposite side of the end 111 a of the unwelded portion 128-1 The welded portion 129-1. The unwelded portion 128-1 and the welded portion 129-1 are formed in a direction (lateral direction) crossing the end portion 116. In the figure, the left end portion 116 corresponds to the above description in which “−1” is changed to “−2” at the end of the reference numeral. However, a series of steps of focusing the left end portion 116, supplying the tape, first sealing, second sealing, and cutting are performed before the above-described series of steps for the right end portion 116.

  As shown in FIG. 1A, the package 110 is formed by cutting a package 110 connected continuously in the longitudinal direction after sealing with a cutting device 80 (FIG. 1A). Therefore, the first seal part 121-1 and the second seal part 122-1 of the package 110 are the first of the other packages 110 (not shown in FIG. 6) immediately upstream of the package 110. The first seal portion 121 (FIG. 3 (d)) and the second seal portion 122 (FIG. 3 (d)) formed integrally with the second seal portion 121-2 and the second seal portion 122-2. Is cut.

  In addition, as described above, the first seal portion 121 includes the absent portion 15b (see FIG. 6) between the main package 110 and the other main package 110 (not shown in FIG. 6) on the upstream side of the main package 110. 1 (a)). Further, the first seal portion 121 includes a two-layer belt-like welded portion 129-1 (an element of the present package 110), a welded portion 129-2 (an element of another package immediately upstream), and a welded portion. 129-1, 129-2, which is formed including a single layer of belt-like unwelded portion 128, and is cut at the unwelded portion 128. Element) and an unwelded portion 128-2 (an element of another package on the upstream side).

  The tape 120 has heat shrinkability, and the heat shrinkage rate in the longitudinal direction is 10% to 35%. Further, the heat shrinkage rate in the longitudinal direction of the tape 120 is larger than the heat shrinkage rate in the width direction. At the end portion 111 in the longitudinal direction, the end portion of the package 110 is sealed together with the tubular film F1. The material of the tape 120 is a vinylidene chloride resin, but other olefin resins may be used, and the tape 120 may be a single layer or multiple layers. Further, the material of the tape 120 is preferably the same as the material of the film (that is, the belt-like film F and the tubular film F1), but may be a different material that can be welded.

  By forming the bag into a bag, the end portion 116 of the tubular film F1 is prevented from being deformed when an internal pressure is applied due to the expansion of the contents C1 or the contraction of the tubular film F1. That is, the package 110 has an increased pressure resistance. Further, the package body 110 is formed in which the tape 120 does not wrinkle and the appearance is not impaired. Since the tape 120 has the heat shrinkability as described above, the converging end of the package 110 can be securely tightened by the tape 120, and the rate of occurrence of pinholes generated in the sealed portion of the end 116 can be reduced. It can be greatly reduced. The content C1 is typically sausage, stick cheese, or the like, but may be food other than this, or may be building materials other than food, such as caulking materials, cosmetics, or the like.

  The colors of the tubular film F1 and the tape 120 may be the same or different. The package 110 can be easily identified by changing the color. For example, the package 110 is such that the tubular film F1 is orange and the tape 120 is red, the tubular film F1 is gold, and the tape 120 is red. Further, a cool feeling may be produced based on a cold color system such as blue in summer and a warm color system such as red or orange may be used in winter. In addition, a more colorful package 110 may be obtained by using the tubular film F1 or tape 120 decorated with a pattern such as gradation, spectrum, iridescent, or geometric pattern. By adopting such colorful colors, the package 110 can be easily identified, and the consumer's willingness to purchase can be promoted.

  Tables 1 and 2 show the results of a test for evaluating the sealing property of the package 110 (FIG. 1) manufactured by the package manufacturing apparatus 1 (FIG. 1) according to the first embodiment. Table 1 is a table showing the inspection conditions for evaluating the sealing performance of the package manufactured by the package manufacturing apparatus 1 of FIG. Table 2 is the table | surface which showed the result of the test | inspection which evaluates the sealing performance of the package manufactured by the package manufacturing apparatus 1 of FIG.

  The material of the tubular film F1 (FIG. 1) of the package 110 is a vinylidene chloride resin film having a thickness of 40 μm. The material of the tape 120 is a vinylidene chloride resin, and the thickness and width are as described in Table 1. As shown in Table 1, six types of package specimens were prepared, and numbers 1 to 3 are tapes 110 using the tape 120 having high heat shrinkability shown in Table 2. Nos. 4 to 6 are packaging bodies using the tape having the low heat shrinkability shown in Table 2 with the same material of the tubular film as compared with the packaging body 110. The specimen is heat-treated under the conditions shown in Table 1 after being filled with the contents C1 (FIG. 1).

  Dye immersion was performed on specimens 1 to 6 shown in the table. Specifically, a 0.4 mass% aqueous solution of Blue No. 1 was maintained at 37 ° C., immersed for 5 days, and immersed for a much longer time than usual. The number of specimens is 80 for each number. After completion of the immersion, the package was cooled, and then sufficiently washed so that no pigment remained outside the package, and further dried. The package of the package was opened, and the presence or absence of pinholes in the package was confirmed by visually observing whether the blue pigment could be adhered to the contents. The number of specimens in which pinholes were found is listed in Table 2 as a hermeticity index. That is, the sealing index refers to the number of pinholes found out of 80, and the smaller the value, the better the sealing performance. As shown in Table 2, the package 110 (FIG. 1) using the tape 120 having the high heat shrinkability, which is the number 1 to 3 of the specimen, is more pinned than the package using the tape having the low heat shrinkability. It can be seen that there are few holes and it is excellent in sealing performance.

  The thermal contraction rate (MD) is the thermal contraction rate in the longitudinal direction of the tape 120 (FIG. 3C), and the thermal contraction rate (TD) is the thermal contraction rate in the width direction of the tape 120. The thermal shrinkage rate (TD) is preferably 5% or more, and the ratio of the thermal shrinkage rate (TD) to the thermal shrinkage rate (MD) is preferably 0.3 to 0.7, particularly preferably 0.35 to 0. .5. By setting it as 0.35-0.5, the sealing property of the edge part 116 (FIG. 6) of the package 110 (FIG. 1) can be improved more. If the absolute value of the thermal contraction rate (TD) is less than 5%, the end part 116 may be bent in the longitudinal direction of the package 110 during the heat treatment of the package 110 (about 60 to 120 ° C.). Looks worse. If the ratio of thermal contraction rate (TD) to thermal contraction rate (MD) is less than 0.3, the end 116 may be bent in the longitudinal direction of the package 110 during the heat treatment of the package 110. When this ratio is more than 0.7, the end portion 116 of the package 110 may become hard after the heat treatment, which is not preferable.

FIGS. 7A and 7B show a package manufacturing apparatus 101 according to the fourth embodiment of the present invention. FIG. 7A is a configuration diagram illustrating the overall configuration of the package manufacturing apparatus 101. FIG. 7A (b) is a partial perspective view illustrating the configuration of the focusing device 70, and FIG. 7A (c) is a partial perspective view illustrating the configurations of the ultrasonic welding device 200 and the tape supply device 190. FIG. 7B (d) is a partial perspective view for explaining the tape supply device and the ultrasonic welding device when the holder has two stages. FIG. 7B (e) is a perspective view for explaining a holding tool on the lower side of the two-stage holding tool in FIG. 7B (d). FIG. 7B (f) is a partial perspective view illustrating a case where a groove mold is not formed on the bottom of the U-shaped surface of the holder of the tape supply device.
This packaging body manufacturing apparatus 101 is different from the packaging body manufacturing apparatus 1 (FIG. 1) of the first embodiment, the holder 191 of the tape supply apparatus 190, the horn 150 of the ultrasonic welding apparatus 200, and the anvil 160. Other configurations are the same. Hereinafter, differences will be mainly described. The tape 220 (FIG. 8C) as the tape member supplied by the tape supply device 190 is the same as the tape 120 (FIG. 3C).

  The horn 150 includes a horn 155 having a long crimping surface in the horizontal direction, and two horns 156 and 157 having a crimping surface long in the vertical direction at both ends of the horn 155. The anvil 160 includes an anvil 165 having a long crimping surface in the horizontal direction, and two anvils 166 and 167 having a crimping surface long in the vertical direction at both ends of the anvil 165. The horn 155 and the horns 156, 157 form H-shaped crimping surfaces 155a, 156a, 157a. Similarly, an anvil 166 and an anvil 167 are connected to both ends of the anvil 165. The horn 155, the horn 156, and the horn 157 may be combined with horns manufactured separately, may be combined with each other, or may be manufactured integrally. In addition, the anvil 165, the anvil 166, and the anvil 67 may be combined with separately manufactured anvils, may be combined with each other, or may be manufactured integrally. However, in the package manufacturing apparatus 101 of the present embodiment, the horn 157 and the anvil 167 on the tape supply device 190 side are separated from the horns 155 and 156 and the anvils 165 and 166, and the tape is held by the holder 191. However, after sealing with the horns 155 and 156 and the anvils 165 and 166, the holding of the tape by the holding tool 191 is stopped, and the holding tool 191 is retracted from the absent portion 115b, and then sealed with the horn 157 and the anvil 167. It is the composition which does.

At the bottom of the U-shaped surface 194 of the holder 191, an elongated concave groove mold 195 into which the tape 220 (FIG. 8C) is fitted is formed.
When the tape 220 is sent from the pair of rollers 193, the holder 191 sucks air from the suction port 192, sucks the tape 220 against the U-shaped surface 194 by the suction force, and makes the tape 220 U-shaped. To support. At this time, in order to insert the tape 220 into the groove mold 195 at the bottom of the U-shaped surface 194, the tape 220 may be fitted into the groove mold 195 with a plug assist (not shown). The holder 191 holds the tape 220 and protrudes in the direction of the U-shaped surface 194 so that the tape 220 overlaps the absent portion 115b.

  As shown in the perspective views of FIGS. 7B (d) and 7 (e), it is preferable that the tape supply device 190 has two stages of holders 191a and 191b. By holding the tape 220 (FIG. 8C) with the upper and lower holders 191a and 191b, the shape and position of the tape 220 become constant. Therefore, the effect of increasing the sealing property and pressure resistance of the converging part at the end of the package 210 by the tape 220 is stabilized.

  Further, as shown in the perspective view of FIG. 7B (f), the concave groove mold 195 (see FIG. 7A (c)) is not formed on the bottom of the concave surface 194 of the holder 191 of the tape supply device 190. May be. In particular, as will be described later, when a seal on the holder 191 side (second seal, second seal) is performed after a transverse seal (first seal), a concave groove mold 195 (FIG. 7A (c)) is not formed, the three sides of the tape 220 (FIG. 8 (c)) can be sealed. In this case, it is preferable to form the concave surface 194 deep in order to secure a space in the tape 220 for sealing the tape supply device 190 (second seal).

Here, in addition to FIGS. 7A and 7B, focusing, sealing, and cutting of the package 210 will be described with reference to the partial perspective view of FIG. 8 and the partial perspective view of FIG. 9.
As shown in FIG. 8A, the flattened absent portion 115b is focused by the focusing device 170 in a direction crossing the flat surface. As shown in FIG. 8 (b), the absent portion 115b is gathered together by focusing.

On the other hand, as shown in the partial perspective view of FIG. 9, in the tape supply device 190, the tape 220 is sent to the holder 191 side while being compressed by a pair of rollers 193 (see FIG. 9A), and is predetermined. (See FIG. 9B). The predetermined length is a length of the tape 220 that is longer than the length along the concave (U-shaped) surface 194 and the concave groove 195 of the holder and protrudes from the concave surface 194 of the holder 191. is there. The length of the tape 220 protruding from the concave surface 194 is such that the protruding portion does not hang down, but the protruding portion 2a performs a second seal (second seal) and the second sealed portion 222a. (See FIGS. 8D, 8E, 8F, and 8G). Although it depends on the material and thickness of the tape, the protruding length is suitably 1 mm or more and 15 mm or less, preferably 3 mm or more, and preferably 10 mm or less. The cut tape 220 is sucked by the suction port 192 of the holder 191 and formed into a shape in which the concave surfaces are overlapped and held. The tape is fitted into the concave groove mold 195 with plug assist (not shown) to adjust the shape of the tape 220 (see FIG. 9C). Note that the width of the holder 191 may be narrower than the width of the tape 220 or the same width.
As shown in FIG. 8 (b), the absent portion 115b is gathered together by focusing.

Next, as shown in FIG. 8C, the tape 220 formed in a shape in which the concave surfaces (U-shape) overlap is overlapped with the converged absent portion 115 b so as to surround the absent portion 115 b.
That is, the tape 220 has a concave-shaped portion 226 and is formed to have a groove-shaped concave-shaped portion 227 formed at the bottom of the concave-shaped portion 226. Here, the term “overlapping” means that the tape 220 is brought close to or in contact with the absent portion 115b so that the converged absent portion 115b is positioned at the bottom portion of the large concave shape of the tape 220. That is, the holder 191 protrudes in the direction of the absent portion 115b.

Next, the tape 220 and the absent portion 115b are sandwiched and welded by the horn 150 and the anvil 160 as follows.
First, as shown in FIG. 8 (d), the horns 155 and 156 and the anvils 165 and 166 simultaneously perform the first seal and the second seal (second seal step) (second seal step). Is done. By these seals, the tape 220 and the absent portion 115b are integrally sealed, and a strip-shaped first seal portion 221 that is long in a direction crossing the absent portion 115b and a direction perpendicular to the direction transverse to the absent portion 115b A long belt-like second seal portion 222 is formed. Moreover, the content C1 in the longitudinal direction of the cylindrical body 115a and the circulation of air and moisture are sealed by these seals. Therefore, the cylindrical body 115 a becomes a hermetic package 210. The tape 220 remains in the sealed predetermined position without being held by the holder 191. Next, the holder 191 moves backward from the direction of the absent portion 115b.

The first seal portion 221 is long in the same direction between the two layers of belt-like welded portions 229-1 and 229-2 that are long in the direction crossing the absent portion 115 b and the welded portions 229-1 and 229-2. It is formed including a band-like unwelded portion 228 of the layer. Under this restriction, the unwelded portion 228 is designed so that the width in the second sealing direction is preferably 3 mm or less, more preferably 1.5 mm or less, and particularly preferably 0.75 mm. The seal is managed.
FIG. 8E shows details of the seal portion 222 of the 2a, the welded portions 229-1 and 229-2, and the unwelded portion 228 of the first seal portion 221.

  As shown in FIG. 8 (f), after the holder 191 is retracted, the horn 157 and the anvil 167 apply a 2b seal (second seal) to form a 2b seal portion 223 (first). 2b sealing step) (second sealing step). By applying the 2b seal, the tape 220 has a bag shape with the opening directed in the direction including the contents C1 of the package 210 (a crown state surrounded by the first seal, the 2a seal, and the 2b seal). ) That is, two bags of a bag 224 opened downward on the vertical lower side of the tape 220 (downstream side of the cylindrical body 115a) and a bag 225 opened upward on the vertical upper side of the tape 220 (upstream side of the cylindrical body 115a). It becomes. When sealing the second b on the tape supply device 190 side after applying the first seal and the second a seal, the holder 191 does not have the concave groove mold 195, and FIG. It is good also as a shape like the holder 91 shown.

  Here, the horn 155 and the anvil 165 are pressure-bonded when the converged absent portion 115b is surrounded by the tape 220. On the other hand, the horn 156 and the anvil 166 and the horn 157 and the anvil 167 are pressure-bonded only with the tape 220. Therefore, what is crimped by the horn 155 and the anvil 165 is thicker. Therefore, the crimping surfaces 166a and 167a of the anvils 166 and 167 are projected to the horn 156 side with respect to the crimping surface 165a of the anvil 165. By extending the crimping surfaces 166a and 167a of the anvils 166 and 167, a thinner object to be welded (tape 220) can be crimped with a predetermined pressure. The predetermined press is a press that enables pressure bonding to form an appropriate seal determined by the material. Further, the pressure on the thicker object to be welded (the converging absent portion 115b and the tape 220) is too large and becomes too thin after sealing, so that the pressure strength is not reduced. The position of the crimping surface may be adjusted by the crimping surface 155a of the horn 155 and the crimping surfaces 156a and 157a of the horns 156 and 157.

  As shown in FIG. 8G, after the first seal, the second a seal, and the second b seal are applied by the ultrasonic welding apparatus 200, the tubular film F1 is stripped by the cutting device 180. The sealing portion 221 (FIG. 8F) is cut. Specifically, it is cut at the unwelded portion 228 of the first seal portion 221 to become an upper unwelded portion 228-1 and a lower unwelded portion 228-2. At this time, the 2a seal portion 222 is also cut simultaneously in the vertical direction by a line that cuts the unwelded portion 228, and after cutting, the upper second seal portion 222-1, the lower second seal portion 222-. 2. Further, the 2b seal part 223 is also simultaneously cut up and down by a line that cuts the unwelded portion 228. After the cutting, the upper 2b seal part 222-1 and the lower 2b seal part 222-2 are cut. (Cutting process).

  In this case, the tape 220 includes a welded portion 229-1 of the first seal portion 221 that seals in the transverse direction, and a 2a seal portion 222-1 that is sealed and cut in a direction crossing the transverse direction. The cut second b seal 223-1 that seals in the direction results in a closed crown. When the cylindrical body 115a is cut, it becomes a single package body 210, which is unloaded from the package body manufacturing apparatus 101, and is shipped as a product through a heat treatment such as boiling and retort. Further, since the tape 220 is cut at the bottoms of the two bags 224 and 225, each becomes a bag surrounding the end 216 of the package 210 (see FIG. 12). Note that the heat treatment of the package 210 (FIG. 7A (a)) is performed at a temperature of about 60 to 120 ° C., and this heat treatment encloses the end portion 216 (FIG. 12) of the package 210. Since the heat shrinks and the tape 220 has the heat shrinkability described above, the adhesion between the tape 220 and the tubular film F1 is increased, and the sealing performance of the end portion 216 is improved.

  According to the package 210 of the present embodiment, the end portion 216 is sandwiched by the tape 220, the tape 220 is welded to the tubular film F1 at the end portion 216, the end portion 216 is sealed, and the tape 220 is sealed. The end portion 216 becomes the package 210 surrounded by the tape 220 in a bag shape. Since the end portion 216 of the package 210 is surrounded by the tape 220 in a bag shape, even if the surface of the converged tubular film F1 is uneven, the uneven surface and the surface of the tape 220 are evenly adhered. In addition, since the thickness of the tubular film F1 to be sealed is compensated, the package body is hermetically sealed and hardly causes pinholes at the end portions 216.

  As described above, according to the package manufacturing apparatus 101 according to the fourth embodiment of the present invention, in addition to the effects of the package manufacturing apparatus 1 (FIG. 1) according to the first embodiment described above, Since the first seal part 221, the 2a seal part 222, and the 2b seal part 223 are applied to the outer edge of the bag-shaped (crown state) tape 220, the outer edge of the tape 220 becomes thin. In other words, the outer edge of the tape 220 becomes soft, and the end portion 216 has an effect of eliminating the possibility of damaging the tubular film F1 of the other package 210.

  In the present embodiment, the examples in which the first to third seals 221 to 223 are applied by the ultrasonic welding apparatus 200 including the horn 150 having the H-shaped crimping surface and the anvil 160 have been described so far. However, the shape of the crimping surface of the horn or anvil is not limited to the H-shape.

  As shown in the partial perspective view of FIG. 10A, when the package 210 is sealed by converging and transversely sealing (first seal), the H-shaped horn 250 and the anvil 260 are cut. A notch may be provided. The 2a sealing horn 256 and the 2b sealing horn 257 of the horn 250 are provided with notches above and below the portion connected to the first sealing horn 255. Similarly, the 2a sealing anvil 266 and the 2b sealing anvil 267 of the anvil 260 are provided with notches above and below the portion connected to the first sealing anvil 265. As a result, the crimping surfaces 255a, 256a, and 257a of the horn 250 and the crimping surfaces 265a, 266a, and 267a of the anvil 260 have a shape with an H-shaped vertical bar as a broken line.

  As shown in the partial view of FIG. 10B, by providing the notches in this way, the three sides are sealed at a time while the tape is held by the tape supply device 290, and the first seal is formed. The part 321, the 2a seal part 322, and the 2b seal part 323 can be formed at a time. That is, when the horn 250 and the anvil 260 are close to each other, the holders 291a and 291b are located at the notches of the horn 250 and the anvil 260. Therefore, the horn 250 and the anvil 260 do not mechanically interfere with the holders 291a and 291b, and the holders 291a and 291b protrude to the absent portion 115b side, and the horn 250 and the anvil 260 cause the absent portion 115b. And the tape can be sealed.

  As shown in FIG. 10B, the sealed portion includes a first seal portion 321 in a direction crossing the absent portion 115b, and a second a portion extending in a broken line shape in a direction intersecting the first seal portion 321. The seal part 322 and the second b seal part 323 are configured. As described above, even if a portion that is not sealed is included in the middle, there is an effect of reinforcing the seal. Therefore, the direction in which the sealed portions are arranged is defined as the direction of the seal, and the seal is expressed. The notches of the H-shaped horn 250 and the anvil 260 may be provided only on the tape supply device 290 side, that is, on the 2b sealing horn 257 and the 2b sealing anvil 267. The seal horn 255 and the first seal anvil 265 may be provided only at one location on the upper side or the lower side. In this case, the tape supply device 290 has a one-stage holder.

  The first seal portion 321 is long in the same direction sandwiched between two belt-like welded portions 329-1 and 329-2 that are long in the direction crossing the absent portion 115b and the welded portions 329-1 and 329-2. It is formed including a band-like unwelded portion 328 of the layer. Under this constraint, the unwelded portion 328 has a design freedom of preferably 3 mm or less, more preferably 1.5 mm or less, and particularly preferably 0.75 mm. The seal is managed.

  Alternatively, as shown in FIG. 10 (c), a first seal portion 421 that traverses the absent portion 115b, a second a seal portion 422 and a second b seal portion 423 that seal the apex portion of the tape, The tape 220 may be formed in a bag shape (a crown state surrounded by a first seal, a second seal, and a second seal). Strictly speaking, the side of the bag is not completely closed, but in such a case as well, the bottom of the bag is closed and the apex corner is closed, thus forming a bag. Also, the two apex angle sealing portions 422 and 423 on one side face are sealed in the direction of the side face.

  The first seal portion 421 is long in the same direction between the two layers of belt-like welded portions 429-1 and 429-2 that are long in the direction crossing the absent portion 115 b and the welded portions 429-1 and 429-2. It is formed including a band-like unwelded portion 428 of the layer. Under this restriction, the unwelded portion 128 has a design freedom of preferably 3 mm or less in the second sealing direction, more preferably 1.5 mm or less, and particularly preferably 0.75 mm. The seal is managed.

  As described above, the seals on the three sides are applied at one time, and the first seals 321 and 421, the second seals 322 and 422, and the second seals 323 and 423 can be formed at a time. Thus, the respective crimping members 255, 256, and 257 of the horn 250 can be integrally formed, and the respective crimping members 265, 266, and 267 of the anvil 260 can be integrally formed. Further, by operating as one body, the operation mechanism of the ultrasonic welding apparatus 300 can be simplified, and since three sides can be sealed with a single seal, the sealing time is shortened, and the working efficiency of the entire packaging body manufacturing apparatus 1 is improved. Will also improve.

  In the package 210 manufactured by the package manufacturing apparatus 101 of the present embodiment, the end portion 216 which is a cut seal portion of the package 210 is sandwiched by the tape 220 having the heat shrinkability described above, and the tape 220 Is formed into a bag shape by the first seal part 229-1, the 2a seal part 222-1 and the 2b seal part 223-1, the surface of the converged tubular film F1 is uneven. However, uniform contact between the uneven surface and the surface of the tape 220 is obtained, and the thickness of the cylindrical film F1 to be sealed is compensated, so that there is a sealing property and a pinhole is hardly generated at the end. A package 210 is obtained.

  With reference to the flowchart of FIG. 11, FIGS. 7A, 7 </ b> B, and 10, a method for manufacturing the package 210 (FIG. 12), which is the fifth embodiment of the present invention, will be described. Here, the package body manufacturing apparatus 101 according to the fourth embodiment of the present invention is used, but the present invention is not limited to the package body manufacturing apparatus 101, and the package body may be manufactured by any manufacturing apparatus. As shown in the figure, the present embodiment includes steps St11 to St17, and further includes steps St18a, St18b, St19, and St20. The supplied tape 220 is the same as the tape 120 (FIG. 3C).

  First, Steps St11 to St15 are the same as Steps St1 to St5 (FIG. 5) of the manufacturing method of the package 110 (FIG. 6), which is the third embodiment, and thus description thereof is omitted. .

  After converging the absent portion 115b of the cylindrical body 115a, the tape 220 is supplied, and the tape 220 is overlaid on the absent portion 115b that is narrowed by converging (step St16) (tape member supplying step). The tape 220 is U-shaped with a groove formed in the bottom of the U-shape, and is stacked so that the absent portion 115b is in the bottom. At the center of the absent portion 115b in the vertical direction, the absent portion 115b is sealed in the transverse direction together with the tape 220 (first seal) to form the first seal portion 221 (step St17) (first seal step) . In order to close the open portion of the U-shaped tape 220, a 2a seal is formed in a direction intersecting the first seal, that is, a direction longitudinally crossing the tape 220, thereby forming a 2a seal portion 222 (step St18a). ) (Second sealing step) (second sealing step), and further, the second b sealing is performed in the direction of longitudinally cutting the tape 220 on the opposite side of the absent sealing portion 115b with respect to the second sealing, and the second b Are formed (step St8b) (second sealing step) (second sealing step). With the 2a seal and the 2b seal in the longitudinal direction, the tape 220 is sealed on both sides of the absent portion 115b. Along with the transverse seal, the tape 220 is formed in two bag-like shapes that are open in the direction of the cylindrical body 115a filled with the contents C1 and whose bottoms are connected. Note that the first, second a, and second b seals may be sealed first, or may be sealed simultaneously as described above.

  Next, it cut | disconnects at the 1st seal | sticker site | part 221 by which the 1st seal | sticker was carried out, and it becomes one package (step St9) (cutting process). The tape 220 is cut into two bags surrounding the sealed portion at the end because the first sealed portion 221 is cut. The details of the cutting are the same as those described for the cutting in the fourth embodiment (FIGS. 7A and 7B).

  During the above operations (steps St11 to St17, St18a, St18b, St19), the belt-like film F and the cylindrical film F1 are continuously fed (St20). That is, the tape stack (step St16), the first seal (step St17), the second seal (step St18a), the second seal (step St18b), the belt-like film F, and the tubular film F1. Work while sending.

  In the package manufacturing method according to the fifth embodiment of the present invention described above, in addition to the effects of the package manufacturing method (FIG. 5) according to the second embodiment described above, the first seal, the second a With the seal and the second b seal, three sides other than the opening of the tape-shaped tape 220 are sealed, and these outer edge portions are thinly formed by being sealed. In addition, the end portion 216 (FIG. 12) of the package 210 has the effect of eliminating the possibility of damaging the tubular film F1 of the other package 210.

  Heretofore, the packaging body manufacturing apparatus 101 or the packaging body manufacturing method that surrounds and seals the end portion with one tape 220 has been described. However, by sealing two or more tapes 220, the packaging body 210 You may comprise the tape 220 of the edge part bag shape (crown state).

  FIG. 12 shows a package 210 according to the sixth embodiment of the present invention. 12A is a front view of the package 210, FIG. 12B is a diagram (top view) viewed from the direction in which the tubular film F1 of the package 210 is vertically sealed, and FIG. 12C is the package. FIG. 210 (side view), FIG. 12D, and FIG. 12E viewed from the longitudinal direction are partial detailed views of the end portion 216 of the package 210. FIG. Differences from the package 110 (FIG. 6) according to the third embodiment will be mainly described. In addition, the package 210 can be manufactured by the package manufacturing apparatus 101 (FIG. 7A (a)).

The ends 216 in the longitudinal direction of the tubular film F1 are converged and sealed, and are surrounded and sandwiched by a single tape 218. The tape 218 is the same as the tape 120 (FIG. 3C). The tape 218 surrounds and sandwiches the converged end portion 216 of the tubular film F1, and the outer edge thereof is sealed to form a bag shape (crown state). That is, the narrowed end portion 216 is surrounded by the tape 218, the end portion 211 in the longitudinal direction of the package 210 is first sealed, and the first seal portion 221-1 is formed. , One side 212 that is sandwiched and stacked is sealed by 2a to form a second sealing part 222-1, the other side 213 is sealed by 2b, and a second sealing part 223- 1 is formed. The first seal part 221-1 is a belt-shaped unwelded portion 228-1 formed at a location including the distal end 211a of the end portion 211, and a belt-like shape in contact with the end 211a of the unwelded portion 228-1 on the opposite side. The welded portion 229-1. The unwelded portion 228-1 and the welded portion 229-1 are formed in a direction (lateral direction) crossing the end portion 216.
In the figure, the left end portion 216 corresponds to the above description in which “−1” is changed to “−2” at the end of the reference numeral. However, the series of steps of converging the left end 216, tape supply, first seal, 2a seal, 2b seal, and cutting are performed before the above-described series of steps for the right end 116. Done.

  As shown in FIG. 7A (a), the package 210 is a continuous package 210 that is connected in the longitudinal direction and is cut by the cutting device 80 after sealing. Therefore, the first seal part 221-1, the 2a seal part 222-1, and the 2b seal part 223-1 of the present package 210 are the same as the other package 210 (upstream side of the present package 210 ( The first seal part 221 (not shown in FIG. 12), the first seal part 221 formed integrally with the second seal part 222-2, the second seal part 222-2, and the second seal part 223-2 (FIG. 7B (d) )), 2a seal part 222 (FIG. 7B (d)) and 2b seal part 223 (FIG. 7B (d)) are cut.

  In addition, as described above, the first seal portion 221 includes the absent portion 115b (see FIG. 12) between the main package 210 and the other main package 210 (not shown in FIG. 12) on the upstream side of the main package 210. 7A (a)). Further, the first seal portion 221 includes a two-layer belt-like welded portion 229-1 (an element of the present package 110), a welded portion 229-2 (an element of the other package), and a welded portion 229-1. 229-2 is formed including a single layer of belt-like unwelded portion 228, and is cut at the unwelded portion 228. The unwelded portion 228 is an unwelded portion 228-1 (an element of the package 210). And an unwelded portion 228-2 (an element of the other package).

  By forming the tape 218 into a bag shape, the end portion 216 of the tubular film F1 is prevented from being deformed when an internal pressure is applied due to the expansion of the contents C1 or the shrinkage of the tubular film F1. That is, the package 210 has high sealing performance and increased pressure strength. Further, the tape 218 is curled up and becomes a package that does not impair the appearance. Further, three sides of the tape-shaped tape 218 are sealed to form a first seal part 221-1, a second seal part 222-1, and a second b seal part 223-1, resulting in a thin film. Therefore, it is soft and does not damage other packaged bodies at the end of the tape 218 during transportation. It is preferable that one piece of tape 218 surrounds the converged longitudinal ends 216 of the tubular film F1 to form a bag because the manufacturing of the package does not complicate the apparatus and the like. One or more tapes 218 may be sealed to form a bag. Since the tape 218 has the same heat shrinkage property as the tape 120 (FIG. 3C), the converging end of the package 210 can be securely tightened by the tape 218, and the tape 218 is generated at the sealing portion of the end 216. The occurrence rate of pinholes can be greatly reduced.

  FIG. 13 shows a package manufacturing apparatus 201 according to the seventh embodiment of the present invention. FIG. 13A is a configuration diagram illustrating the overall configuration of the package manufacturing apparatus 201. FIG. 13B is a partial perspective view illustrating the configuration of the focusing device 70, FIG. 13C is a schematic diagram showing the relationship between the package and the tape supply device, and FIG. 13D is an ultrasonic wave. 3 is a partial perspective view illustrating the configuration of a welding apparatus 300. FIG. The packaging body manufacturing apparatus 201 is different from the packaging body manufacturing apparatus 101 (FIG. 7A (a)) of the fourth embodiment in the tape supply device 390, and the other configurations are the same. Hereinafter, differences will be mainly described. The tapes 320a and 320b as tape members supplied by the tape supply device 390 are the same as the tape 120 (FIG. 3C).

  As shown in the partial perspective view of FIG. 13C, the tape supply device 390 is a device that supplies the two reinforcing tapes 320a and 320b to the absent portion 215b that is a sealed portion. The two tapes 320a and 320b are converged along a plane perpendicular to the converged direction of the absent portion 215b. The surface to which the tape 320a and the tape 320b are supplied is the opposite surface across the absent portion 215b. The tape 320a and the tape 320b are arranged so as to sandwich the absent portion 215b.

  Here, the details of the tape supply device 390 will be described with reference to the schematic diagrams of FIGS. However, the tape supply device 390 may have another configuration for supplying the two tapes 320a and 320b to the absent portion 215b (FIG. 13C), and is not limited to the configuration shown in the figure. In the tape supply device shown in the figure, the tape is held in an Ω-shape, but the tape may be held in a flat shape or may be held in another shape.

In the tape supply device 390 shown in FIG. 14A, a single tape 320a is pinched by a pair of cylindrical feed rollers 393a and quantitatively fed, and the feed direction is adjusted by a cylindrical guide roller 393c. After that, it is cut into a predetermined length by the tape cutter 396a and held by the tape holder 397a. A suction port (not shown) is provided on the surface of the tape holder 397a that holds the tape 320a. By sucking the tape 320a, the tape 320a is held while being formed in the shape of the surface of the holder 397a. The suction port is connected to a suction pump (not shown), and sucks air to vacuum-suck the tape 320a. The surface 394a that holds the tape 320a of the holder 397a has an Ω shape. The tape 320a is held by the flat surface and the concave surface formed in the flat surface. The absent portion 215b (FIG. 13C) is passed through the concave shape. Similarly to the tape 320a, the other piece of tape 320b is quantitatively fed by the feed roller 393b, adjusted in the feed direction by the guide roller 393d, and then cut to a predetermined length by the tape cutter 396b. Held at 397b. Similar to the tape holder 397a, the tape holder 397b holds the tape 320b while forming the tape 320b in an Ω shape by the surface 394b that holds the tape 320b. Here, in order to secure the installation space for the feed rollers 393a and 393b and the tape cutters 396a and 396b of the two tapes 320a and 320b, the tapes 320a and 320b are respectively placed at positions separated from the holder 397a and the holder 397b. Hold. Therefore, the holder 397b is attached to the outer periphery of the cylindrical rotating body 398, and moves when the rotating body 398 rotates around its axis 399.
That is, as shown in FIG. 14A, the holder 397b that holds the tape 320b is at a position of 90 degrees with respect to the holder 397a that holds the tape 320a and the central axis 399. That is, the tape 320b is moved in the direction of the absent portion 215b by being rotated. Then, when the rotating body 398 rotates 90 degrees in the direction of the arrow in FIG. 14A, the holder 397b that holds the tape 320b moves to a position facing the holder 397a. Then, when the holder 397a protrudes toward the holder 397b, the absent portion 215b (FIG. 13C) can be sandwiched between the concave portions of the two tapes 320a and 320b.

  Thus, by configuring the tape supply device 390, the two tapes 320a and 320b are securely held in the Ω shape by the holders 397a and 397b of the first tape supply device 391a and the second tape supply device 391b. On top of that, the two holders 397a, 397b sandwich the absent portion 215b (FIG. 13C) between the two tapes 320a, 320b to facilitate the first sealing, and the two tapes 320a, The end portions of 320b can be overlapped to facilitate sealing (second a seal and second b seal). Moreover, since the two tapes 320a and 320b can be supplied from one side, the two tapes 320a and 320b can be supplied while ensuring the space for the operator of the package manufacturing apparatus 201.

The tape supply device may be a tape supply device 490 shown in FIG.
In the tape supply device 490 shown in the figure, the two tapes 320a and 320b, which are quantitatively fed by the feed rollers 493a and 493b and the feed direction is adjusted by the guide rollers 493c and 493d, are separated on both sides of the core 498, The shape follows the outer shape of the core 498. The core 498 has an elliptic cylinder shape having a point on the side to which the tapes 320a and 320b are supplied. Therefore, the two tapes 320a and 320b are cut into a predetermined length by the tape cutter 496. Almost simultaneously with the cutting, the two tapes 320a and 320b overlap each other, and the vicinity of the core 498 from the cutting position is sealed with a sealer 499 over the width of the tapes 320a and 320b 1 seal, 2a seal, 2b seal). The seal may be ultrasonic welding, resistance heating welding, high frequency dielectric heating welding, laser heating welding, or other various weldings. The tapes 320a and 320b may be cut after sealing. Thereafter, the core 498 is rotated 90 degrees together with the cut and sealed tapes 320 a and 320 b, and is inserted into the holder 497. The holder 497 has a concave portion 494 that fits into the outer shape of the core 498. When the core 498 is inserted, the tapes 320a and 320b along the outer periphery of the core 498 are attached to the concave portion 494. Hold on. When the tapes 320a and 320b are held by the holder 497, the core 498 is retracted, and a space is formed in an area surrounded by the tapes 320a and 320b that are held by the holder 497 and have a concave shape. The tapes 320a and 320b are moved so that the absent portion 215b (FIG. 13C) of the tubular film F1 is accommodated in the space.

  By configuring the tape supply device 490 in this way, two tapes 320a and 320b, which are preliminarily sealed and joined at one end (second-a seal), are formed in a concave shape, and the absent portion 215b (see FIG. 13 (c)), where a first seal and a second b seal can be applied. Moreover, since the two tapes 320a and 320b can be supplied from one side, the two tapes 320a and 320b can be supplied while ensuring the space for the operator of the package manufacturing apparatus 201. Furthermore, the space for the feed rollers 493a and 493b and the guide rollers 493c and d can be narrower than that of the tape device 390. On the other hand, the tape device 390 does not require complicated movement of the core 498 as compared with the tape supply device 490, and the mechanism as the tape supply device is simplified.

Further, the tape supply device may be a tape supply device 590 shown in FIG.
In the tape supply device 590 shown in the drawing, the two tapes 320a and 320b are fed to the holders 597a and 597b by the feed rollers 593a and 593b and the guide rollers 593c and 593d, so that the tape cutters 596a and 596b have a predetermined length. Disconnect with. The cut tapes 320a and 320b are held in an Ω shape by the Ω-shaped surfaces 594a and 594b of the holders 597a and 597b. The absent portion 215b (FIG. 13C) of the tubular film F1 is accommodated in the concave portions of the Ω-shaped tapes 320a and 320b held by the holders 597a and 597b. Therefore, the holders 597a and 597b are moved so as to be close to each other, and the tapes 320a and 320b are overlaid on the absent portion 215b.

  By configuring the tape supply device 590 in this way, similarly to the tape supply device 390, the two tapes 320a and 320b are held by the holders 597a and 597b of the first tape supply device 591a and the second tape supply device 591b. Is held in an Ω-shape, and the two holders 597a and 597b sandwich the absent portion 215b (FIG. 13C) between the two tapes 320a and 320b to facilitate the first seal. The end portions of the two tapes 320a and 320b can be overlapped for easy sealing (second a seal and second b seal). Also, a tape supply device 590 for supplying two tapes 320a and 320b with a simple configuration as compared with the tape supply device 390 is provided.

In the packaging body manufacturing apparatus 201 according to the seventh embodiment, the packaging body concentrating, sealing, and cutting are as described for the packaging body manufacturing apparatus 101 (FIG. 7A (a)) according to the fourth embodiment. The description of bundling, sealing and cutting of the package applies. However, the following applies to the description regarding the tape 220 (FIG. 8C).
That is, as shown in FIG. 15, the difference is that the absent portion 215b is sandwiched and converged by the two tapes 320a and 320b before being welded by the horn 150 and the anvil 160 of FIG. is there. Two tapes 320a and 320b are supplied so as to be in this mode. Therefore, the sealed portion of the end of the package 310 manufactured by the package manufacturing apparatus 201 according to the seventh embodiment is surrounded by the bags of the two tapes 320a and 320b. 4 has the same effect as the package 210 (FIG. 12) manufactured by the package manufacturing apparatus 101 (FIG. 7A (a)) according to the fourth embodiment.

  Next, FIG. 16 shows a flowchart of a method for manufacturing the package 310 (FIG. 17), which is the eighth embodiment of the present invention. Here, the packaging body manufacturing apparatus 201 (see FIG. 13) according to the seventh embodiment of the present invention is used. . As shown in the figure, the present embodiment includes steps St21 to St25, and further includes steps St26a, St27, St28a, St28b, St29, and St30. The supplied tapes 320a and 320b are the same as the tape 120 (FIG. 3C).

First, Steps St21 to St25 are the same as Steps St11 to St15 (FIG. 11) of the manufacturing method of the package 210, which is the fifth embodiment. Next, two tapes 320a and 320b (FIG. 13C) are provided (step St26a) (tape member supplying step). Hereinafter, step St27 (first sealing process), step St28a (second sealing process) (second sealing process), step St28b (second sealing process) (second sealing process), step St29 (cutting) Step) and Step St30 are the same as Step St17, Step St18a, Step St18b, Step St19, and Step St20 (FIG. 11) of the manufacturing method of the package 310, which is the fifth embodiment.
The package manufacturing method according to the eighth embodiment has the same effects as those of the above-described package manufacturing method (FIG. 11) according to the fifth embodiment of the present invention.

  FIG. 17 shows a package 310 according to the ninth embodiment of the present invention. 17A is a front view of the package 310, FIG. 17B is a view (top view) viewed from the direction in which the tubular film F1 of the package 310 is vertically sealed, and FIG. 17C is the package. The figure (side view) 310 viewed from the longitudinal direction, FIGS. 17D and 17E are partial detailed views of the end 316 of the package 310. FIG. Differences from the package 210 (FIG. 12) according to the sixth embodiment will be mainly described. The package 310 can be manufactured by the package manufacturing apparatus 201 (FIG. 13).

  The longitudinal end 316 of the tubular film F1 is converged and sealed, and is surrounded by two tapes 318a and 318b. The tapes 318a and 318b are the same as the tape 120 (FIG. 3C). The tapes 318a and 318b sandwich the converged end portion 316 of the tubular film F1 and seal the outer edge thereof, so that the first seal part 321-1, the second a seal part 322-1 and the second b seal part 323-1 is formed into a bag shape (a crown state surrounded by a first seal, a second a seal, and a second b seal). The first seal part 321-1 is a band-shaped unwelded portion 328-1 formed at a location including the end 311a of the end portion 311 and a band-like shape in contact with the opposite side of the end 311a of the unwelded portion 328-1. The welded portion 329-1. The unwelded portion 328-1 and the welded portion 329-1 are formed in a direction (lateral direction) crossing the end portion 316. That is, the narrowed end portions are sandwiched between the tapes 318a and 318b, the end 311 in the longitudinal direction of the package 310 is sealed, and the stacked side portions 312 and 313 are sealed. At the first seal portion 321 at the end in the longitudinal direction, the seal is made together with the tubular film F1, and the end portion 316 of the package 310 (FIG. 13A) is sealed.

  The package 310 of the present embodiment has the same effect as the package 210 (FIG. 12) of the sixth embodiment, and the two tapes 318a and 318b are formed into a bag shape, whereby the contents C1. When the internal pressure is applied due to the expansion of the tube or the shrinkage of the tubular film F1, the end portion 316 of the tubular film F1 is prevented from being deformed. That is, the package 310 has high sealing performance and increased pressure strength. Further, the tapes 318a and 318b are rolled up to form a package that does not impair the appearance. Further, the three sides 311, 312, and 313 of the tapes 318 a and 318 b formed into a bag shape are sealed, and as a result, are formed thin, so that they are soft and other packages are attached to the tapes 318 a and 318 b during transportation. There is no damage at the edges. The content C1 is typically sausage, stick cheese, or the like, but may be food other than this, or may be building materials other than food, such as caulking materials, cosmetics, or the like. Since the tapes 318a and 318b have heat shrinkability as described above, the constricted ends of the package 310 can be securely tightened by the tapes 318a and 318b, and pinholes generated in the sealed portions of the ends. Occurrence rate can be greatly reduced.

  FIG. 18 shows a modification of the seal shape of the tubular film F1 and the two tapes 318a and 318b. The tapes 318a and 318b have heat shrinkability similar to that of the tape 120 (FIG. 3C). In the following cases, the tapes 318a and 318b have two first seal portions (only one first seal portion 311a is illustrated) that seals in the direction crossing the absent portion 215b (FIG. 13A). Form. Further, in the case of FIGS. 18 (a) and 18 (b), each of the two 2a seal portions and the 2b seal portions that are sealed in a direction perpendicular to the transverse direction is cut into two pieces (each cut). In the case of FIGS. 18 (c), (d), and (e), two seals that are sealed in a direction perpendicular to the transverse direction are also shown. A 2a seal part and a 2b seal part (only one 2a seal part 322-1 and one 2b seal part 323-1 are shown) are formed, and a closed crown is formed. .

  The example shown in FIG. 18A is an example in which the seal 321a traversing the vicinity of the end 311a is shifted slightly inward from the end 311a. In this way, even when the sealed thin portion is not located at the outer edge, when the width of the unsealed tapes 318a and 318b located at the outer edge is narrow, the cylindrical shape of the other package 310 The film F1 (FIG. 17) is not strong enough to be damaged. As shown in the drawing, when a package having a seal shifted from the cutting position is manufactured using the above-described package manufacturing apparatus 1 or by the above-described package manufacturing method, the first seal has two parallel seals. The first seal part (only one first seal part 321a is shown) applied to the tube, and the tubular film F1 (FIG. 13 (a)) is cut between the two first seal parts. To do.

In the example shown in FIG. 18B, in addition to the transverse seal part 321a, the 2a seal part 322-1 and the 2b seal part 323-1 in the direction perpendicular to the seal part 321a are slightly inward from the outer edge. This is an example.
In the example shown in FIG. 18C, the first side seal part 321a, the second side seal part 322-1, and the second side seal part 323-1 are shifted slightly inward from the outer edge to reach the outer edge. There is no example.
The example shown in FIG. 18 (d) is an example in which only the 2a seal portion 322-1 and the 2b seal portion 323-1 are slightly shifted inward. In any example, the tapes 318a and 318b are formed in a bag shape, and the pressure strength is increased. Further, even if the sealed thin portion is not located on the outer edge, but the width of the unsealed tapes 318a, 318b located on the outer edge is narrow, the tubular film F1 of the other package 310 It is not strong enough to damage (FIG. 17).

  In the example shown in FIG. 18E, in the example shown in the figure, the crossing first seal portion 321a is not linear but curved so as to correspond to the bulge against the internal pressure. By making such a curve, the internal pressure acts more uniformly on the first seal portion 321a, and the pressure resistance strength is improved. The shape of the seal part may be a combination of these modified examples or other shapes, and is not limited to the above. Since the tapes 318a and 318b have heat shrinkability as described above, the converging ends of the package 310 (FIG. 17) can be securely tightened by the tapes 318a and 318b, and the end portions are sealed. The occurrence rate of generated pinholes can be greatly reduced.

A package manufacturing apparatus 301 according to a tenth embodiment of the present invention will be described with reference to the configuration diagrams of FIGS. 19A and 19B. FIG. 19A (a) is a configuration diagram showing the overall configuration of the package manufacturing apparatus 301. FIG. FIG. 19B (b) is a partial perspective view for explaining the configuration of the lateral joining device 461 and the tape polymerization device 450 (as viewed in the direction of arrow Z1 in FIG. 19A (a)). FIG. 19B (c) is the same as FIG. 19B (b). It is the fragmentary sectional view (Z2-Z2 arrow view of FIG. 19A (a)) which showed the structure of the same horizontal joining apparatus 461 and the tape superposition | polymerization apparatus 450 from the perpendicular direction, and FIG. It is a fragmentary perspective view (Z3 arrow view of Drawing 19A (a)) explaining composition of next seal device 476 and cutting device 481.
19A (a) corresponds to the vertical direction in the actual vertical direction, and a cylindrical film F1 described later runs so as to flow from top to bottom in the drawing. That is, the upper side is the upstream side in the traveling direction of the tubular film F1 in the filling and packaging operation, and the lower side is the downstream side in the traveling direction. A strip-shaped film F wound in a roll shape is supported as an original fabric 21 so as to be freely rotatable. The belt-like film F drawn out from the original fabric 21 travels while being guided by the guide rollers 22A and 22B and is guided to the forming plate 11. The original fabric supply device 20 is configured by the original fabric 21 and the guide rollers 22A and 22B. The material of the belt-like film F is preferably a vinylidene chloride resin for heat welding, and may be other olefin resin. Moreover, the strip | belt-shaped film F is good also as a single layer or a multilayer.

  The forming plate 11 has a cylindrical shape that opens up and down. In addition, there is a circumferential gap extending in the longitudinal direction at one place in the circumferential direction. The upper end edge of the forming plate 11 is curved and inclined, and the belt-like film F is formed into a continuous cylindrical film F1 having an overlapping portion at the side edge portion by being guided along the inner surface thereof. . A guide tube 12 is suspended below the forming plate 11 on the downstream side, and the tubular film F1 is guided to travel downstream while maintaining its tubular shape.

  The overlapping portion of the tubular film F1 guided by the guide tube 12 is welded while being pressed by the vertical sealing device 13 and is vertically sealed. As the welding means by the vertical seal device 13, ultrasonic welding is suitable, but other than this, resistance heating welding, high frequency dielectric heating welding, laser heating welding, molten resin droplet welding, and other various welding means can be used. . In addition, the vertical joining may be a so-called joint-attached seal or an envelope-attached seal.

  In the upper part of the package manufacturing apparatus 301, a filling apparatus 30 including a pump 31 and a nozzle 32 for filling the vertically sealed cylindrical film F1 with the contents C1 is provided. The nozzle 32 is connected to a pump 31 installed above the forming plate 11, and the tip is introduced into the guide tube 12. The tip of the nozzle 32 opens on the downstream side of the vertical sealing device 13. Note that the pump 31 may be installed not at the top of the forming plate 11 but at another position where the contents C1 can be easily replenished, and connected to the nozzle 32 by piping. In particular, when filling a relatively heavy content such as paste-like food, the paste-like food stored in a container placed on the ground is preferably supplied by being pumped to the position of the nozzle 32 by a pump. .

  A feed roller 14 that is a feed device is provided on the downstream side of the guide tube 12 and the nozzle 32. In the feed roller 14, the cylindrical film F <b> 1 is filled with the contents C <b> 1 filled in the vertically sealed tubular film F <b> 1. It is conveyed while narrowing down continuously.

An ironing device 40 is provided on the downstream side of the feed roller 14.
In FIG. 19A (a), the ironing roller 41 of the ironing device 40 has a cylindrical outer surface extending in a direction perpendicular to the paper surface, and the length in the perpendicular direction is at least longer than the folding width, and is supported by the arm body 42. Has been. The “folding width” refers to the width when the cylindrical body 415a is flattened, in other words, the half length of the circumferential length of the cylindrical body 415a. The arm body 42 can swing around its one end 42a, and a lateral member 43 is connected to the middle part via a pin or the like. Further, when the cylindrical body 415a is flattened, the squeezing roller 41 is such that the overlapped portion Fp of the side edge portion of the belt-like film F fits on one surface of the absent portion 415b of the flattened cylindrical body 415a. (See FIG. 19B (b)). In particular, it is good to arrange so that it may be located in the central part of one side. At this time, it is preferable that the overlapped portion Fp of the side edge portion of the belt-like film F is disposed at the central portion of one of the pair of ironing rollers 41 in the cylindrical longitudinal direction. When the pair of lateral members 43 move in the proximity direction, the cylindrical body 415 a is narrowed by the pair of squeezing rollers 41. When the horizontal member 43 moves backward in the separation direction, the squeezing roller 41 does not narrow the cylindrical body 415a. Thus, the absent portion 415b of the contents C1 is formed in the traveling cylindrical body 415a by a predetermined distance in the traveling direction. The ironing device 40 is not limited to a roller as long as the absent portion 415b of the contents C1 can be formed flat on the cylindrical body 415a, and for example, the cylindrical body 415a is crushed from both sides with a flat member, and the contents are distributed up and down. It may be something like this. Such crushing is also included in the concept of “squeezing” here.

  A transverse joining device 461 that performs a primary seal (first seal) is provided on the downstream side of the squeezing device 40, and the tape 451 as a tape member adjacent to the transverse joining device 461 is a tape 451. This is the same as the tape 120 (FIG. 3C). A tape polymerization device 450 is provided to overlap the absent portion 415b (see FIG. 19B (b)). As shown in the partial plan view of FIG. 19B (c), the tape polymerization apparatus 450 has a cylindrical body 415a on the overlapped portion Fp (that is, the vertically sealed side) of the side edge portion of the strip-like film F of the absent portion 415b. The tape 451 is supplied in a direction crossing the traveling direction. Therefore, a tape feed roller 455 that feeds the tape 451 wound in a substantially horizontal direction along the flattened surface of the absent portion 415b to the absent portion 415b by a predetermined length, and the fed tape 451 has a predetermined length. Are provided between the feed roller 455 and the cutter 458, and pressing tools 456 and 457 that correct the curl of the tape 451. Thus, since the tape superposition | polymerization apparatus 450 is arrange | positioned at a horizontal direction, the total height of the package manufacturing apparatus 301 does not become high for the tape superposition | polymerization apparatus 450. FIG.

  The tape feed roller 455 is a pair of cylindrical rollers, and feeds the tape 451 to the absent portion 415b by rotating in the circumferential direction with the tape 451 sandwiched between the side surfaces. When the tape 451 is fed by a predetermined length, the rotation of the tape feed roller 455 stops. At this time, the tape 451 fed out is sandwiched between a pair of tape feeding rollers 455 and is in a cantilever state. The tape feed roller 455 supplies and overlaps the tape 451 having a predetermined length for each absent portion 415b with respect to the continuously running tubular film F1.

  The pressing tools 456 and 457 include a backing metal 456a having a tape contact surface with a horizontal section whose center is convexly curved, and a receiving metal 457a having a substantially rectangular tape contact surface. The backing metal 456a presses the receiving metal 457a by a driving device (not shown) and reciprocates away. When the receiver 457a is pressed by the stopper 456a, the receiver 457a is deformed so as to follow the curvature of the stopper 456a. The tape 451 fed by the tape feed roller 455 is pressed with a curvature opposite to that of the tape 451 wound in a roll shape by the backing metal 456a and the receiving metal 457a, and the curl is corrected. That is, the tape 451 fed by the tape feed roller 455 stops the rotation of the tape feed roller 455 and stops feeding to the absent portion 415b, so that the stopper 456a receives the tape 451 and presses against the metal 457a. To do. Note that the tape contact surfaces of the backing metal 456a and the receiving metal 457a do not have to have a rectangular shape and a horizontal section with a convexly curved center, and the receiving metal 457a may reciprocate to press the tape.

  The cutting device 458 has a pair of cutters 458a and 458b having a blade width in the width direction of the tape 451, and the tape 451 is fed to the absent portion 415b through between the respective blades. When the tape 451 having a predetermined length is fed to the absent portion 415b by the tape feed roller 455, the pair of cutters 458a and 458b come close to each other and cut the tape 451. When the tape 451 is cut, the cutters 458a and 458b are separated from each other and wait for the tape 451 to be fed again between the blades of the cutters 458a and 458b. The tape 451 is cut by the cutting device 458 before the primary sealing is performed, but may be cut after the primary sealing is performed.

  In addition, the tape superposition | polymerization apparatus 450 is not restricted to what cuts and supplies the tape 451 wound by roll shape suitably, You may be comprised so that the tape 451 cut | disconnected by predetermined length beforehand may be supplied. In any case, the length of the tape 451 is at least as long as the width of the side edges of the belt-like film F overlapped, and more preferably the length of the folded width is not less than the length of the folded film. The overlapped portion Fp of the side edge portion of the film F is covered. In addition, since the overlapped portion Fp of the side edge portion of the belt-like film F is accommodated on one side of the absent portion 415b, the belt-like film F is particularly centered on one side. Therefore, by overlapping the tape 451 on one side, The overlapped portion Fp of the side edge of the film F can be covered, and the welding described later can be performed uniformly at the overlapped portion Fp of the side edge of the belt-like film F and its vicinity. . The material and the like of the tape 451 and the tubular film F1 can be appropriately determined according to the design specifications of the package, but the width of the tape 451 is preferably 5 to 100 mm and the thickness is 10 to 300 μm. is there. A plurality of tapes 451 may be stacked as necessary. The material of the tape 451 is preferably a vinylidene chloride resin, but may be an olefin resin. Further, the tape 451 may be configured to be a single layer or a multilayer. The material of the tape 451 is preferably the same as the material of the film (that is, the belt-like film F and the tubular film F1), but may be a different material that can be welded.

  As shown in the detailed perspective view of FIG. 19B (b), the lateral joining device 461 includes an ultrasonic horn 462 and an anvil 463 that face each other on both sides of the surface of the absent portion 415b. In addition, an ultrasonic horn 462 is provided on the side where the tape 451 is superimposed on the absent portion 415b. The facing surface 463a of the anvil 463 facing the ultrasonic horn 462 is flat. On the other hand, the ultrasonic horn 462 has two parallel protrusions 462a extending in the width direction of the absent portion 415b. Further, the two protrusions 462a are provided with suction holes 462b for sucking and holding the fed tape 451. A plurality of suction holes 462b are arranged in the width direction of the absent portion 415b, and are connected to a suction device (not shown) to suck and hold the tape 451 by sucking air. The tape 451 held in a cantilevered state by the tape feed roller 455 is sucked and held in the suction hole 462b and does not fall even if cut by the cutting device 458.

  The ultrasonic horn 462 and the anvil 463 configured in this manner are close to each other, and the two protrusions 462a of the ultrasonic horn narrow the tape 451 and the absent portion 415b between the opposed surfaces 463a of the anvil 463, and When the ultrasonic horn 462 releases ultrasonic energy, the tape 451 is welded to the tubular film F1. As shown in FIG. 20, a linear (hereinafter simply referred to as linear) primary seal portion S1 (first seal portion), which is two narrow seal bands, is formed in the absent portion 415b. As described above, since the tape 451 is held by the ultrasonic horn 462, the tape is not removed from the tape 451 and primary sealing is not performed. The shape of the opposing surface of the ultrasonic horn 462 and the anvil 463 is not limited to the above. For example, the opposing surface 62a of the ultrasonic horn 462 is also flat like the opposing surface 463a of the anvil 463, and the substantially absent portion 415b. A belt-like primary seal portion having a width equivalent to the length may be formed. As the welding means, ultrasonic welding is suitable, but other than these, resistance heating welding, high frequency dielectric heating welding, laser heating welding, molten resin droplet welding, and other various welding means may be used.

  A focusing and joining device 470 is provided on the downstream side of the lateral joining device 461. The focusing joining device 470 includes a focusing device 471 and a secondary seal device 476 that performs a secondary seal (second seal). The focusing device 471 is disposed so as to sandwich the upper and lower sides of the secondary seal device 476. In FIG. 19A (a), the transverse joining device 461 and the focusing joining device 470 are described in the same direction. (Vertical direction).

  As shown in the detailed perspective view of FIG. 19B (d), the focusing device 471 has parallel focusing plates 472 and 473 above and below the secondary seal device 476. The converging plates 472 and 473 facing each other across the tubular film F1 in the width direction of the flat tubular film F1 (FIG. 19A (a)) reciprocate close to each other and then away from each other. As described above, this reciprocation is performed in a direction orthogonal to the reciprocation of the lateral joining device 461. On the converging plates 472 and 473, V-shaped converging grooves are formed at the opposing edges on the tubular film F1 side. When the opposing focusing plates 472 and 473 are close to each other, the left and right focusing plates 472 and 473 overlap to form one small space between the groove bottoms of the respective V-shaped grooves. If a U-shaped notch is formed in the groove bottom of the V-shaped groove, a circular space is formed between the U-shaped bottoms when the focusing plates 472 and 473 are close to each other, which is preferable.

  Regarding the secondary seal device 476, the ultrasonic horn 477 and the anvil 478 are arranged to face each other with the tubular film F1 (FIG. 19A (a)) interposed therebetween. The ultrasonic horn 477 has two parallel projecting portions 477a that extend in parallel with the opposing surfaces of the focusing plates 472 and 473 and enter the inside of the distance between the two projecting portions 462a of the anvil 462 of the transverse joining device 461. Yes. In the ultrasonic horn 477 and the anvil 478, two projecting portions 477a constrict the absent portion 415b and the tape 451 between the opposing surfaces 478a of the anvil 478 and weld the cylindrical film F1, thereby converging plates 472 and 473. Reciprocating close to each other and then away so as to form two linear secondary seal sites S2 (second seal sites) between the two primary seal sites S1 in the absent portion 415b focused at Move. However, since the absent portion 415b is already flattened and focused by the primary seal, the length of the line of the secondary seal portion S2 is very short. In addition, although demonstrated as a secondary seal, the simple welding which does not have a sealing effect may be sufficient. In addition, it may be welded by a curved ultrasonic horn 477 and anvil 478 as well as a linear shape, or resistance heating welding other than ultrasonic welding, high frequency dielectric heating welding, laser heating welding, molten resin droplet spraying welding, etc. Various welding means may be used. In addition, two concave members that just enclose the converged absent portion 415b, or one concave member and a lid member that covers the recess, weld the entire portion between the two positions Y1 and Y2 of the converged absent portion 415b. You may do it.

  A cutter 481a as a cutting device is provided at an intermediate position of the height of the anvil 478 in the secondary seal device 476. The cutter 481a is plate-shaped, and a sharp blade portion is provided on the side where the tubular film F1 (absent portion 415b) to be cut and the tape 451 are present. The cutter 481a also reciprocates similarly to the secondary seal device 476 and the focusing device 471. Therefore, it is preferable that the secondary seal device 476, the focusing device 471, and the cutter 481a are driven by a common drive device (not shown), thereby simplifying the configuration. However, after the focusing plates 472 and 473 are close to each other and the ultrasonic horn 477 and the anvil 478 compress the absent portion 415b and the tape 451, the cutter 481a moves to a position where the tubular film F1 and the tape 451 are cut. The configuration is as follows.

  Further, the tape superposing device 450, the lateral joining device 461, the secondary sealing device 476, the converging device 471, and the cutting device 481 are moved downward with the same speed as the cylindrical body 415a is sent downward, and the tape 451 is moved. The non-existing portion 415b is sandwiched to form the primary seal portion S1 and the secondary seal portion S2, and after cutting, the absent portion 415b is opened and returned to the upper position, so-called “worship motion (box motion)” It is preferable to do this. Therefore, when the tape superposing device 450, the lateral joining device 461, the secondary sealing device 476, the converging device 471, and the cutting device 481 are installed on a common vertical moving base (not shown), the configuration is simplified. Become.

  Then, manufacture of the package using the package manufacturing apparatus 301 which is 10th Embodiment of this invention shown to FIG. 19A and FIG. 19B is demonstrated. The belt-like film F is pulled out from the original fabric 21 at a predetermined speed, is applied with a predetermined tension by the guide rollers 22A and 22B, is guided to travel, and reaches the forming plate 11.

  The belt-like film F that has reached the forming plate 11 is formed in a cylindrical shape having overlapping portions at the side edge portions, and the overlapping portion Fp is welded by the vertical sealing device 13. In this way, the vertically sealed tubular film F1 is formed. The cylindrical film F1 is filled with the contents C1 from the pump 31 through the nozzle 32. The cylindrical body 415 a filled with the contents C <b> 1 is conveyed downstream by the feed roller 14. The pair of feed rollers 14 conveys the cylindrical body 415a with a narrow pressure so that the cylindrical body 415a is locally crushed. After the crushed cylindrical body 415a passes through the position of the feed roller 14, it is caused by the internal pressure of the contents C1. Return to the original cylindrical shape.

  The cylindrical body 415a is narrowed by a pair of squeezing rollers 41 intermittently over a predetermined length, and is flattened so that the overlapping portion Fp of the side edge portion of the belt-like film F fits on one side. Absent portions 415b without C1 are formed with a predetermined interval.

  Here, referring to FIG. 20 as well, the sealing and focusing of the package will be described. FIG. 20A is a partial front view for explaining the positional relationship in which the tape 451 is overlaid on the absent portion 415b of the cylindrical body 415a and the primary seal is formed to form the primary seal portion S1. ) Is a partial front view for explaining the positional relationship in which the secondary seal is formed by focusing after the primary seal to form the secondary seal part S1, and FIG. 20C illustrates the package 410 cut after the convergence. FIG. As shown in FIG. 20 (a), when the tubular body 415a is sent to the downstream side and the absent portion 415b reaches the tape polymerization device 450, the side having the overlapping portion Fp on the side edge of the tubular film F1. The tape 451 is supplied to the absent portion 415b in a direction crossing the longitudinal direction of the cylindrical body 415a. At this time, the overlapping portion Fp at the side edge of the tubular film F1 is covered with the tape 451. The overlapping portion Fp at the side edge of the tubular film F1 is preferably covered with the tape 451 over the entire surface of the absent portion 415b, but the overlapping portion Fp at the side edge of the tubular film F1 is covered. It only has to be.

  The lateral joining device 461 is provided adjacent to the tape polymerization device 450, and the tape 451 supplied to the absent portion 415b is sucked into the suction holes 462b provided in the two protrusions 462a of the ultrasonic horn 462. Is held on the ultrasonic horn 462. The tape 451 is held by the ultrasonic horn 462 and then cut to a predetermined length. The absent portion 415b is sandwiched between the ultrasonic horn 462 holding the tape 451 and the anvil 463, ultrasonic energy is released from the ultrasonic horn 462, the tape 451 is welded to the absent portion 415b, and the absent portion. Two linear primary seal portions S1 are formed with respect to 415b (see FIG. 20A). Since the tape 451 covers the overlapping portion Fp on the side edge of the tubular film F1, the overlapping portion Fp on the side edge of the tubular film F1 that tends to be a weak portion and the vicinity thereof together with the primary seal portion S1. The tape 451 is welded and the part can be reinforced.

  Next, focusing and secondary sealing will be described with reference to FIGS. 20 (b) and 19B (d). The absent portion 415b (FIG. 20A) where the primary seal portion S1 is formed is sent downstream and reaches the position of the focusing and joining device 470. In the focusing and bonding apparatus 470, first, the absent portion 415b is finely focused on the bottom of the focusing groove by the opposing focusing plates 472 and 473. Next, the converged absent portion 415b is sandwiched between the two protrusions 477a (FIG. 19A (a)) of the ultrasonic horn 477 of the secondary seal device 476 and the opposed surface 478a (FIG. 19A (a)) of the anvil 478. The secondary seal portion S2 is formed at the two positions Y1 and Y2 (FIG. 19A (a)).

  As shown in FIG. 20C and FIG. 19B (d), immediately after the secondary seal portion S2 is formed, the tubular film F1 is placed between the separated primary seal portion S1 by the cutter 481a of the cutting device. And cut across the two secondary seal sites S2. Thus, it cuts between the seal | sticker site | parts S1, and it becomes the package 410 one by one. The package 410 is taken out from the package manufacturing apparatus 301 (FIG. 19A (a)) and supplied to the next step.

  Returning to FIG. As described above, the converging joining device 470 and the cutting device 481 converge while forming the secondary seal portion S2 while converging while the absence portion 415b moves downward at the same speed as that sent vertically downward. . Thereafter, the opposing parts of these devices are separated from each other and moved upward to prepare for the next absent portion 415b. Further, the tape superposing device 450 and the lateral joining device 61 also move in synchronization therewith. In this way, the tape superposing device 450, the transverse joining device 461, the focusing joining device 470, and the cutting device 481 operate while moving at the same speed as the speed at which the tubular film F1 is fed. Therefore, since the packaging body 410 can be continuously manufactured without stopping the feeding of the tubular film F1, the working speed of the packaging body 410 can be increased. However, the tape polymerization device 450, the transverse bonding device 461, the focusing bonding device 470, and the cutting device 481 are not structured to move up and down, and the tape 451 is fed while the cylindrical film F1 is intermittently fed and the feeding is stopped. The primary seal portion S1 (first seal) may be formed, and the absent portion 415b may be converged to form the secondary seal portion S2 and cut. If comprised in this way, the structure of the package manufacturing apparatus 301 will become simple and a size and a weight can be reduced.

  As described above, according to the package manufacturing apparatus 301 according to the tenth embodiment of the present invention, the tape 451 is welded to the tubular film F1 and the primary seal (first seal) of the tubular film F1. Are performed at the same time, and the portion of the tubular film F1 where the primary sealing is performed together with the tape is reinforced. Therefore, even if the heat treatment such as retort or boiling is performed at a temperature of about 60 to 120 ° C. in the subsequent process and the tubular film F1 is thermally contracted, the occurrence of pinholes in the package is suppressed.

  The tape 451 has heat shrinkability, the heat shrinkage rate in the longitudinal direction is 10% to 35%, and the heat shrinkage rate in the longitudinal direction of the tape 451 is larger than the heat shrinkage rate in the width direction. Further, the converging end of the package 410 can be securely tightened with the tape 451, and the occurrence rate of pinholes generated in the sealed portion of the end can be greatly reduced. Since the twist of the supplied tape 451 is small, the supply of the tape 451 by the tape superimposing apparatus 450 can be performed reliably.

  Subsequently, the package manufacturing method according to the eleventh embodiment of the present invention will be described with reference to the flowchart of FIG. 21 and also with reference to FIGS. 19A and 19B as appropriate. Here, the packaging body manufacturing apparatus 301 according to the tenth embodiment of the present invention is used, but the packaging body 410 (FIG. 22) may be manufactured by any manufacturing apparatus without being limited to the packaging body manufacturing apparatus 301. . First, the belt-like film F is formed into a tubular shape by overlapping the side edge portions with the forming plate 11 or the like to form the tubular film F1 (step St31) (tubular film forming step). By vertically sealing the overlapping portion of the side edge portions of the tubular film F1 (vertical sealing step), the vertically sealed tubular body 415a is formed (step St32) (tubular body forming step). Then, the contents C1 are filled into the tubular body 415a from the nozzle 32 inserted into the tubular body 415a (step St33) (filling step).

  Absence of content having a predetermined length and a predetermined length by squeezing the cylindrical body 415a filled with the content C1 so that the overlapping portion of the side edges of the cylindrical film F1 fits on one side The portion 415b is formed flat (step St34) (squeezing step). The predetermined length is a length at which an end portion having a sufficient sealing function is formed on the package 410. The predetermined interval is a length obtained by adding the predetermined length to the length in which the contents C1 of the package 410 are present. One tape 451 is placed on the absent portion 415b on the side where the overlapping portion of the side edge portion of the tubular film F1 is present (step St35) (tape member supplying step). The tape 451 is the same as the tape 120 (FIG. 3C). By ultrasonic welding from the side where the tape 415 is overlapped, two primary seal portions S1 are formed linearly at a predetermined interval in the longitudinal direction of the cylindrical body 415a with respect to the absent portion 415b (step) St36) (primary sealing step) (first sealing step). In addition, you may form primary seal | sticker site | part S1 in strip | belt shape over a predetermined space | interval in the longitudinal direction of the cylindrical body 415a. Further, resistance heating welding other than ultrasonic welding, high-frequency dielectric heating welding, laser heating welding, molten resin droplet spraying welding, and other various welding means may be used.

  The absent portion 415b in which the primary seal portion S1 is formed is focused (step St37) (focusing step). Between the two positions where the converging points are linearly sealed to form the primary seal part S1, the secondary seal part S2 is formed by secondary sealing at two positions different from the two positions. (Step St38) (secondary sealing step) (second sealing step). A space between the two secondary seal portions S2 is cut across the secondary seal portion S2, and one package 410 is manufactured (step St39) (cutting step).

  During the above operation (steps St31 to St39), the belt-like film F and the tubular film F1 are continuously fed (step St40). That is, the supply of the tape 451 (step St35), the primary seal (step St36), the convergence of the absent portion 415b (step St37), and the secondary seal (step St38) are performed while feeding the tubular film F1. .

  According to the above-described packaging body manufacturing method according to the eleventh embodiment of the present invention, the welding of the tape 451 to the tubular film F1 and the primary sealing of the tubular film F1 are performed at the same time. Since the portion of the tubular film F1 that has been subjected to the next sealing is reinforced, the package 410 in which the generation of pinholes is suppressed can be manufactured. Since the tape 451 has the heat shrinkability as described above, the converging end of the package 410 can be securely tightened by the tape 451, and the occurrence rate of pinholes generated in the sealed portion of the end is greatly increased. Can be reduced. Since the twist of the supplied tape 451 is small, the operation of the tape polymerization step (step St15) can be performed reliably.

Subsequently, a package 410 according to a twelfth embodiment of the present invention will be described with reference to FIG. 22A-1 is a front view of the package 410, FIG. 22A-2 is a side view of the package 410, and FIG. 22A-3 is the shape and cylinder of the tape 451 in the package manufacturing process. It is a figure which shows the edge part of the film F1. The tape 451 is the same as the tape 120 (FIG. 3C). The package 410 can be manufactured by the package manufacturing apparatus 301 (FIG. 19A (a)).
In addition, since the cylindrical film F1 and the tape 451 are cut | disconnected between two sealing site | parts S1, the said part becomes an edge part of the package 410. FIG. The cylindrical film F1 enclosing the contents C1 is formed by superimposing the side edges of the belt-like film F and vertically sealing them. The material of the strip film F is a vinylidene chloride resin, but other olefin resins may be used, and the strip film F may be a single layer or a multilayer. Moreover, the edge part of the cylindrical film F1 is sealed and converged. The content C1 is typically sausage, stick cheese, or the like, but may be food other than this, or may be building materials other than food, such as caulking materials, cosmetics, and the like. A tape 451 is disposed at the end of the tubular film F1, and this tape 451 is welded to the tubular film F1 together with the sealing portion S1 at the end of the tubular film F1 and then converged. . The material of the tape 451 is a vinylidene chloride resin, but other olefin resins may be used, and the tape 451 may be a single layer or a multilayer. Further, the material of the tape 451 is preferably the same as the material of the film (that is, the belt-like film F and the tubular film F1), but may be a different material that can be welded.

  Since the packaging body 410 configured as described above is provided with the tape 451 at the end and welded together with the primary seal part S1, the primary seal part S1 is reinforced. As a result, the occurrence of pinholes in the tubular film F1 is suppressed. Further, since a part of the tape 451 is welded to the tubular film F1, the end of the tape 451 is pinched and folded to cause a cut in the tubular film F1, and the tubular film F1 is peeled off as a trigger. Thus, the contents C1 can be easily taken out. That is, it becomes easy to peel off the tubular film F1, and also has a role of helping to open the package when the consumer takes out the contents C1. Since the tape 451 is disposed at both ends, even if the opening of the package fails once, it is possible to try opening the package again using the tape 451 on the opposite side. Since the tape 451 has the heat shrinkability as described above, the converging end of the package 410 can be securely tightened by the tape 451, and the occurrence rate of pinholes generated in the sealed portion of the end is greatly increased. Can be reduced.

  Then, the 1st of the package which is the 12th Embodiment of this invention with reference to FIG.22 (b-1)-(b-3) and FIG.22 (c-1)-(c-3). The modified example and the second modified example will be described. 22 (b-1) is a front view of a package 411 as a first modification, FIG. 22 (b-2) is a side view of the package 411 as a first modification, and FIG. 22 (b-3). (A) is a figure which shows the shape of the tape 452 and the edge part of the cylindrical film F1 in the manufacture process of the package 411 which is a 1st modification. 22 (c-1) is a front view of a package 412 as a second modification, FIG. 22 (c-2) is a side view of the package 412 as a second modification, and FIG. 22 (c-3). ) Is a diagram showing the shape of the tape 453 and the end of the tubular film F1 in the manufacturing process of the package 412 which is the second modified example. The packaging body 411 as the first modification and the packaging body 412 as the second modification have the width of the tapes 452 and 453 as shown in FIG. 22 (b-3) and FIG. 22 (c-3). It is changing. When tapes 452 and 453 having a change in width are used, the tapes 452 and 453 are easier to pinch when the ends of the package are converged, as shown in FIG. 22 (b-2). When viewed from the direction of the central axis of the columnar package, the star-shaped package or a fruit-like form as shown in FIG. 22 (c-2) is presented, and the consumer's willingness to purchase can be induced. The tape 452 and the tape 453 are the same as the tape 120 (FIG. 3C).

  The colors of the tubular film F1 and the tapes 451, 452, and 453 may be the same or different. For example, the tubular film F1 is gold and the tapes 451, 452, and 453 at both ends are red, and the tubular film F1 is gold and one end of the tapes 451, 452, and 453 is red and the other end of the tapes 451, 452, Various combinations such as making 453 white can be employed. The package can be easily identified by changing the color. For example, a packaging body in which the tubular film F1 is orange and the tapes 451, 452, and 453 are red, the tubular film F1 is gold, and the tapes 451, 452, and 453 are red. Further, a cool feeling may be produced based on a cold color system such as blue in summer and a warm color system such as red or orange may be used in winter. In addition, a more colorful package may be obtained by using the tubular film F1 and tapes 451, 452, and 453 decorated with patterns such as gradation, spectrum, iridescent, and geometric patterns. Further, since the tapes 451, 452, and 453 have the heat shrinkability as described above, the converging end portions of the packaging bodies 410 to 412 can be securely tightened by the tapes 451 to 453, and the end portions are sealed. The incidence of pinholes occurring in the portion can be greatly reduced.

  Below, the cylindrical film F1 of the twelfth embodiment is packaged by variously changing the position where the belt-like film F is overlapped, the position where the tape 451 is overlapped, and the positions of the ultrasonic seal horns 462, 463. The result which manufactured the body AD and observed the seal | sticker site | part is shown. The tape 451 is the same as the tape 120 (FIG. 3C) as described above.

  In the package A, as shown in FIG. 23 (a), the tape 451 is overlapped on the portion Fp where the strip-shaped film F is overlapped, the horn 462 is disposed on the tape 451 side, and the anvil is disposed on the opposite surface sandwiching the tubular film F1. In the state where 463 is arranged, primary sealing is performed to produce a package A.

  In the package B, as shown in FIG. 23 (b), the tape 451 is overlapped on the surface opposite to the portion Fp where the belt-like film F is overlapped, the horn 462 is sandwiched between the tape 451 and the tubular film F1 is sandwiched. In the state where the anvil 463 is disposed on the opposing surface, primary sealing was performed to manufacture the package B.

  In the package C, as shown in FIG. 23 (c), the tape 451 is overlapped on the surface opposite to the portion Fp where the band-shaped film F is overlapped, the anvil 463 is sandwiched between the tape 451 and the tubular film F1 is sandwiched. With the horn 462 disposed on the opposing surface, primary sealing was performed to produce a package C.

  In the package D, as shown in FIG. 23 (d), the tape 451 is overlapped on the portion Fp where the strip-shaped film F is overlapped, the anvil 463 is disposed on the tape 451 side, and the horn is disposed on the opposite surface sandwiching the tubular film F1. In the state where 462 is arranged, a primary seal is performed to produce a package D.

  Here, the material of the tubular film F1 of the packages A to D is a strip film F of vinylidene chloride resin having a thickness of 40 μm, and the material of the tape 451 is the same vinylidene chloride resin as the tubular film F1, The tape used was 35 mm long, 20 mm wide, and 80 μm thick. The packages A to D were manufactured by filling the emulsion for fish sausage as the contents C1 (FIG. 19A (a)) with a diameter of 20 mm and a length of 150 mm.

  As conditions for performing primary sealing by ultrasonic welding on the tubular film F1 and the tape 451, it is preferable that the vibration frequency is 15 to 50 kHz, the amplitude of the vibrator is 5 to 35 μm, and the nominal output is 300 to 600 W. More preferably, the vibration frequency is 40 kHz, the amplitude of the vibrator is 5 to 15 μm, and the nominal output is 300 W. Therefore, primary sealing was performed with a vibration frequency of 40 kHz, a vibrator amplitude of 15 μm, and a nominal output of 300 W. In addition, after the primary seal, the absent portions Ab to Db were converged to give a secondary seal. If the amplitude of the vibrator exceeds 35 μm, pinholes due to melting may occur in the tubular film F1 or the tape 451, and if it is less than 5 μm, welding may be insufficient. However, the nominal output and vibration frequency can be set to arbitrary values as long as they are within the scope of regulations for occupational safety and health.

Hereinafter, description will be made with reference to FIG. 24 and also with reference to FIG. 23 as appropriate.
FIG. 24 is a package in which the longitudinally sealed ends of these packages A to D (FIG. 23) are cut in the longitudinal direction and the outline of the enlarged photograph of the cross section of the primary seal site S1 (FIG. 20) is captured. It is a schematic cross section explaining the welding state of the longitudinal direction cross section of a body edge part. 24A is a schematic sectional view of the package A, FIG. 24B is a schematic sectional view of the package B, and FIG. 24C is a schematic sectional view of the package C. A schematic cross-sectional view of D is shown in FIG.

  As shown in FIG. 24 (a), in the package A, the tape 451 or the tubular film 491 eluted from the primary seal (same material as the tubular film F1 (FIG. 19A (a))). However, it grew in a spherical shape toward the inside of the tubular film 491 and was fixed. That is, the portion of the tubular film 491 where the primary seal portion S1 (FIG. 20) is formed has a sufficient thickness, and the tubular film 491 has a spherical portion between the primary seal portion S1. By having it in, it does not have a part bent at an acute angle. Therefore, it is considered that there is no weak part or stress concentration part, and even if a thermal stress is generated in the cylindrical film 491 by a heating process such as retort / boiling, the occurrence of pinholes in the cylindrical film 91 is suppressed. . 24A to 24D, the “outer ear” refers to a portion where the tubular films are overlapped and is present outside the tubular film 491.

  As shown in FIG. 24B, in the package B, the tape 451 and the tubular film 491 that are eluted by performing the primary seal are outside the tubular film 491, and the tubular film 491 and the outer ear 492. Growing up and stuck between. Further, the angle formed between the two tubular films 491 in the primary seal portion S1 (FIG. 20) was an acute angle as compared with the package A.

  As shown in FIG. 24 (c), in the package C, the tape and the tubular film eluted by performing the primary seal are outside the tubular film 491, and are formed between the tubular film 491 and the tape 451. It grew and stuck in between. Further, the angle formed between the two tubular films 491 in the primary seal portion S1 (FIG. 20) was an acute angle as compared with the package A.

  As shown in FIG. 24D, in the package D, the tape 451 and the tubular film 491 that are eluted by performing the primary seal are outside the tubular film 491, and the tape 451 and the outer ear 492 are separated. It grew and stuck in between. Further, the angle formed between the two tubular films 491 in the primary seal portion S1 (FIG. 20) was an acute angle as compared with the package A.

  Confirmation of the pinhole formation suppression in said package bodies A-D was performed as follows. A 0.4% by mass aqueous solution of food color blue No. 1 as a blue pigment was raised to 85 ° C., and packaging bodies A to D were put into this aqueous solution, and boil heating was performed for 1 hour. After the boiling heating was completed, the packaging bodies A to D were cooled, and then sufficiently washed so that no pigment remained outside the packaging bodies A to D, and further dried. The packages A to D were opened, and the presence or absence of pinholes in the packages A to D was confirmed by visually observing whether or not the blue pigment could be adhered to the contents C1 (FIG. 19A (a)). As a result, although it was an observation result with a small number of samples, no pinhole was observed in the package A. In addition, in the packaging bodies B, C, and D, formation of pinholes was partially observed. However, the formation of pinholes was suppressed compared to when the primary sealing was performed without overlapping the tape 451. In addition, since the tape 451 has the heat shrinkability as described above, the converging end portions of the packaging bodies A to D can be securely tightened by the tape 451, and the pinhole generated in the sealed portion of the end portion can be obtained. The incidence can be greatly reduced.

  From the above observation, in the manufacture of the packaging bodies A to D according to the embodiment of the present invention, the tape 451 is overlapped on the side where the strip film F is overlapped when the tubular film F1 is formed, and the tape 451 is overlapped. It is considered most preferable to place ultrasonically sealed horns 462 and 463 on the opposite side.

It is a figure explaining the package body manufacturing apparatus which is the 1st Embodiment of this invention. Fig.1 (a) is a block diagram explaining the whole structure of the said package body manufacturing apparatus. FIG. 1B is a partial perspective view illustrating the focusing device. FIG.1 (c) is a fragmentary perspective view explaining a tape supply apparatus and an ultrasonic welding apparatus. It is a perspective view explaining the anvil which has a hollow. FIG. 2A is a perspective view of the anvil. FIG. 2B is a side view of welding. FIG.2 (c) is a side view explaining the flow of the molten material by welding, and the vicinity of the welded part. It is a fragmentary perspective view explaining the manufacturing process of a package body edge part. FIG. 3A shows the absence portion converged, FIG. 3B shows the converged absence portion, FIG. 3C shows the tape overlapped, and FIGS. 3D and 3E show the first seal and the second seal. (F) shows that it has been cut. It is a fragmentary perspective view explaining supply of the tape in a tape supply apparatus. It is a flowchart explaining the package body manufacturing method which is the 2nd Embodiment of this invention. It is a figure explaining the package which is the 3rd Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is a side view, (d), (E) is the fragmentary detail drawing of the edge part of a package. It is a figure explaining the package body manufacturing apparatus which is the 4th Embodiment of this invention. FIG. 7A (a) is a configuration diagram illustrating the overall configuration of the packaging body manufacturing apparatus. FIG. 7A (b) is a partial perspective view illustrating the focusing device. FIG. 7A (c) is a partial perspective view illustrating the tape supply device and the ultrasonic welding device. It is a figure explaining the package body manufacturing apparatus which is the 4th Embodiment of this invention. FIG. 7B (d) is a partial perspective view for explaining the tape supply device and the ultrasonic welding device when the holder has two stages. FIG. 7B (e) is a perspective view for explaining a holding tool on the lower side of the two-stage holding tool in FIG. 7B (d). FIG. 7B (f) is a partial perspective view illustrating a case where a groove mold is not formed on the bottom of the U-shaped surface of the holder of the tape supply device. It is a fragmentary perspective view explaining the manufacturing process of a package body edge part. (A), (b) are focused absent portions, (c) is where the tape is overlaid, (d) is where the first seal and the second a are sealed, (e) is the first The detail of a seal | sticker and a 2nd seal | sticker is shown, (f) shows the place where the 2b seal | sticker was made and (g) shows the place cut | disconnected. It is a fragmentary perspective view explaining supply of the tape in a tape supply apparatus. It is a figure explaining the ultrasonic welding apparatus which seals 3 sides at once. (A) is a fragmentary perspective view of an ultrasonic welding apparatus and a tape supply apparatus. (B) is the fragmentary figure of the package body explaining the seal shape of the package body edge part sealed with the apparatus shown to (a). (C) is the fragmentary figure of the package body with which the tape was sealed with the seal | crossing which crosses an absent part, and the seal | sticker of the vertex angle of a tape. It is a flowchart explaining the package body manufacturing method which is the 5th Embodiment of this invention. It is a three-plane figure explaining the package which is the 6th Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is a side view, (d) (E) is the fragmentary detail drawing of the edge part of a package. It is a figure explaining the package body manufacturing apparatus which is the 7th Embodiment of this invention. (A) is a block diagram explaining the whole structure of the package body manufacturing apparatus which is the 1st Embodiment of this invention. (B) is a fragmentary perspective view explaining a focusing apparatus. (C) is a fragmentary perspective view explaining the supply of the tape by a tape supply apparatus. (D) is a fragmentary perspective view explaining an ultrasonic welding apparatus. It is a schematic diagram explaining a tape supply apparatus. (A) is a tape supply device in which one of the two holders rotates and moves after holding the tape so that the two holders face each other, and (b) holds using a core. The tape supply apparatus which puts a tape by making the concave part shape-sealed part of the ingredient | tool into the bottom of a concave surface, (c) shows the tape supply apparatus with which two tapes are supplied from the opposing direction. It is a fragmentary perspective view explaining the manufacturing process of a package body edge part, and shows the place pinched with two tapes. It is a flowchart explaining the package body manufacturing method which is the 8th Embodiment of this invention. It is a three-view figure explaining the package which is the 9th Embodiment of this invention, (a) is a front view, (b) is a top view, (c) is a side view, (d) (E) is detail drawing of the edge part of a package. It is a fragmentary figure of the package which shows the modification of the seal shape of the package of FIG. (A) is a block diagram explaining the whole structure of the package body manufacturing apparatus which is the 10th Embodiment of this invention. (B) and (c) are a perspective view and a cross-sectional view of a lateral joining device and a tape polymerization device constituting the package manufacturing apparatus of FIG. 19A (a), and (d) is the packaging of FIG. 19A (a). It is a perspective view of a focusing device, a secondary seal device, and a cutting device which constitute a body manufacturing device. It is a partial front view explaining the state of the seal | sticker formed in a package in order of (a)-(c). It is a flowchart which shows the package body manufacturing method which is the 11th Embodiment of this invention. It is a figure explaining the package which is the 12th Embodiment of this invention, and its modification. It is a fragmentary perspective view explaining the overlapping part, tape position, and direction of a horn and an anvil when performing the primary seal | sticker of the package of FIG. It is a schematic cross section explaining the welding state of the longitudinal direction cross section of the package body end part of FIG.

Explanation of symbols

C Contents F Band-like film F1 Tubular film S Melt S1 Primary seal part S2 Secondary seal part 1, 101, 201, 301 Package manufacturing apparatus 11 Forming plate 12 Guide cylinder 13 Vertical seal apparatus 14 Feed rollers 15a, 115a 215a, 415a Tubular bodies 15b, 115b, 215b, 415b Absent portion 20 Original fabric supply device 21 Original fabric 22A, 22B Guide roller 30 Filling device 31 Pump 32 Nozzle 40 Ironing device 41 Ironing roller 42 Arm body 42a One end 43 Horizontal member 50, 150, 250 Horn 51, 56, 61, 155, 156, 157, 255, 257 Horn 51a, 56a, 155a, 156a, 157a, 255a, 256a, 257a, 265a, 266a, 267a Crimp surface 60, 160, 166 , 167, 260, 2 5, 266, 267 Anvil 62 Both ends 63 Recess 64 Center crossing 65, 165 Anvil 66, 166, 167 Anvil 65a, 166a Anvil crimping surface 70 Focusing device 71, 71a, 71b, 72, 72a, 72b Focusing plate 74a, 74b, 75a, 75b Converging groove 80, 180 Cutting device 81 Cutter 90, 190, 390 Tape supply device 91, 191, 291a, 292b Holder 92, 192 Suction port 93, 193 Roller 94, 194 Surface 95, 195 Groove mold 100 , 200 Ultrasonic welding apparatus 110, 210, 310 Package 111, 211, 311 Terminal portion 111a, 211a, 311a Terminal 112, 212, 213, 312, 313 Side portion 114 Vertical seal portion 116, 216, 316 End portion 117 Excess Minutes 120, 218, 220, 318a 318b, 320a, 320b Tape 121 First seal portion 122, 122-1, 122-2 Second seal portion 123, 124 Bag 128, 128-1, 128-2 Unwelded portion 129-1, 129-2 Welded portion 221 First seal portion 222, 222-1, 222-2 2a seal portion 223, 223-1, 223-2 Second b seal portion 224, 225 Bag 226, 227 Concave-shaped portion 228, 228- 1,228-2 Unwelded portion 229-1,229-2 Welded portion 321, 321-1, 321-2, 321a First seal portion 322, 322-1, 322-2 Second a seal portion 323, 323 -1 2b seal portion 328, 328-1 unwelded portion 329-1, 329-2 welded portion 391a, 391b, 490, 590, 59 a, 591b Tape supply devices 393a, 393b, 493a, 493b, 593a, 593b Feed rollers 393c, 493c, 493d, 593c, 593d Guide rollers 396a, 396b, 496, 596a, 596b Tape cutters 397a, 397b, 497, 597a, 597b Holding tool 398 Rotating body 399 Shaft 450 Tape superposition device 451, 452, 453 Tape 455 Feed roller 456, 457 Pressing tool 456a Pad 457a Receiving metal 458 Cutting device 458a, 458b Cutter 461 Horizontal joining device 462 Horn 462a Protrusion 462b Suction hole 463 Anvil 463a Opposing surface 470 Focusing joining device 471 Focusing device 472, 473 Focusing plate 476 Secondary seal device 477 Horn 477a Protruding portion 478 Anvil 478a Opposing Surface 481 Cutting device 481a Cutter 491 Tubular film 494 Concave part 498 Core 499 Sealer 594a, 594b Surface 597a, 597b Holder A, B, C, D Package C1 Contents F Strip film F1 Tubular film S Melt S1 Primary seal part S2 Secondary seal part

Claims (9)

A filling step of filling the cylindrical film with the contents;
An ironing step of flatly forming a non-existing portion of the content at predetermined intervals in the longitudinal direction of the tubular film with respect to the tubular film filled with the content;
A focusing step of focusing the absent portion in a direction crossing a flat surface;
The tape member that is long in the transverse direction and has a heat shrinkage rate in the longitudinal direction larger than the heat shrinkage rate in the width direction is sandwiched between the converged absent portion or the converged absent portion. A tape member supplying step that is arranged so as to overlap the absent portion;
A first sealing step that seals the tape member together with the tape member in a direction crossing the absent portion on which the tape member is overlaid to form a sealed portion sealed to the absent portion;
Packaging manufacturing method. A tape member supplying step is to arrange one piece of the tape member so as to sandwich the converged absent portion;
The packaging body manufacturing method according to claim 1. The tape member supplying step arranges the two tape members so as to sandwich the converged absent portion;
The packaging body manufacturing method according to claim 1. A cutting step of cutting the tubular film;
The sealing portion includes a belt-like welded portion elongated in the transverse direction and an unwelded portion for cutting sandwiched between the welded portions;
The cutting step cuts the tubular film at the unwelded portion;
The package manufacturing method of any one of Claim 1 thru | or 3. A second sealing step of sealing in a direction intersecting the transverse direction so that the stacked tape members are in a crown state or a closed ring state;
The package manufacturing method of any one of Claim 1 thru | or 4. The tape member has a longitudinal heat shrinkage of 10% to 35%;
The package manufacturing method of any one of Claims 1 thru | or 5. A cylindrical film filled with contents and focused at the ends;
The filled contents;
The tape member that wraps around the end portion, is welded to the tubular film at the end portion, and seals the end portion, and has a thermal contraction rate in the longitudinal direction larger than that in the width direction. And comprising:
Packaging body. The tape member has a longitudinal heat shrinkage of 10% to 35%;
The package according to claim 7. The tape member is heat treated after sealing the end;
The package according to claim 7 or 8.

Images