JP2007246098A - Container conveying apparatus, heat shrinkable film packaging system using the apparatus and container conveying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container conveying apparatus that prevents the float, displacement, etc., of a heat-shrinkable film covering a container for heat shrinkable packaging. <P>SOLUTION: The container conveying apparatus 1 comprises a lower conveying section 11 by which a container A covered with a tubular heat shrinkable film F from the container bottom is placed and conveyed with a container opening facing down. The apparatus also comprises lines of upper restraining sections 12 and 13 extending in the conveying direction of the lower conveying section 11 and in an upper area that is opposite to the lower conveying section 11. The container bottom enters a space defined between the upper restraining sections 12 and 13 of the container conveying apparatus 1. In addition, the container A is conveyed while the upper restraining sections 12 and 13 prevent the floating of the heat shrinkable film F covering the container A. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container transport device, a heat-shrinkable film packaging system using the same, and a container transport method. More specifically, the present invention relates to a technique for reliably mounting a heat shrink film on a predetermined position of a container when heat shrink packaging is applied to the container.

  In a place where an article is distributed as a commodity, packaging of the article is performed. At that time, a technique is used in which a heat-shrinkable film such as polyethylene or polypropylene is used as a label, and the film is put on the container and thermally contracted. For example, Patent Document 1 includes a perforation for opening, a cylindrical heat shrink that is heat-shrinked in the circumferential direction of the container by being heated while attached to the container, and is tightly integrated with the container. A functional film is disclosed.

  And when the shape of the container to be wrapped is a taper shape that widens toward the container opening from the container bottom, the container is covered with a tubular heat-shrinkable film with the container opening facing down. And can be packaged by heat shrinking. However, if the container is covered with a cylindrical heat-shrinkable film and heat-shrinked as it is, the heat-shrinkable film slides from the curved container-side trunk, so that the force to lift the container to the upper side (bottom side) is increased. work. As a result, the heat-shrinkable film floats from the side body of the container, causing wrinkles and misalignment, and there is a problem that it is difficult to perform good and uniform heat-shrink packaging on a tapered container.

As for this, in Patent Document 2, when packaging a dish-shaped article, a presser is disposed in a state of being opposed to an endless transporter disposed in a state of passing through a heating furnace. A technique relating to a shrink wrapping apparatus for a thin dish-like object that suppresses heat shrinkage of a film on an upper surface portion covering a container is disclosed.
JP 2004-18089 A. JP-A-7-172418.

  However, in the packaging technique using the presser, the shape of the container to be packaged is limited to a thin dish-shaped container. For example, in the case of a container having a pointed head used for a container for soft ice cream corn confectionery, etc., or when packaging only in the vicinity of the opening of the outer peripheral wall of a tapered container, etc. The container portion that does not come into contact with the presser. For this reason, a heat-shrinkable film cannot be pressed from the upper surface. Therefore, when heat-shrink wrapping such a container or the like, there is a problem that the heat-shrinkable film cannot be prevented from floating from the container.

  Accordingly, the present invention has as its main object to provide a container transport device that prevents the heat-shrinkable film placed on the container from being lifted or displaced even when heat-shrink packaging is applied to the container having the above-mentioned shape. .

  First, the present invention includes (1) a “lower transport unit” that transports a container in which a cylindrical heat-shrinkable film is deposited from the container bottom side with the container opening facing downward. 2) A plurality of rows of “upper restraining portions” extending in the transporting direction of the transporting portion in the upper region facing the lower transporting portion, the above (1) and (2), and between the upper restraining portions Provided is a container transport device devised to transport the container while the bottom of the container enters the space formed in the container and suppresses the lifting of the heat-shrinkable film attached to the container with the upper restraining part. To do. Next, this invention also provides the container conveying apparatus devised so that the space | interval width of the said upper suppression part can be adjusted.

  The present invention also provides a heat source for temporarily fixing the film to the container by applying heat to the container transported on the lower transport section to contract a part of the heat-shrinkable film. A container transport device is also provided. Furthermore, it can be devised to have an arrangement configuration in which heat is applied toward the vicinity of the container opening. Furthermore, this invention provides the container conveying apparatus devised so that the said lower conveyance part may convey, rotating a container in the container circumferential direction. Then, this invention provides the heat-shrinkable film packaging system provided with the said container conveying apparatus at least.

  In the present invention, (1) a process in which a container in which a tubular heat-shrinkable film is deposited from the container bottom side is conveyed with the opening of the container facing down, (2) the heat A step in which a portion sandwiching the bottom of the container as viewed from the transporting direction of the container in the upper edge of the shrinkable film is suppressed from above; (3) opening of the container on which the heat-shrinkable film is deposited; Provided is a container conveying method in which the vicinity of the part is heated, and the above steps (1) to (3) are simultaneously performed.

  The container transport device according to the present invention is provided with a plurality of rows of upper restraining portions, so that even when heat shrink wrapping is performed in the vicinity of the opening of a tapered container or the like or in the vicinity of the middle portion of the outer peripheral wall. It is possible to prevent lifting and displacement.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the accompanying drawings. Note that the embodiments shown in the drawings illustrate preferred embodiments of the present invention, and the present invention is not construed narrowly.

  FIG. 1 is a side view of a first embodiment of a container transport device according to the present invention, and FIG. 2 is a plan view of the same embodiment. FIG. 3 is a simplified side view for explaining a mechanism in which the container transport device according to the present invention prevents the heat-shrinkable film from rising, and FIGS. 4 and 5 show the container transport device according to the present invention. It is a simplified front view for demonstrating the mechanism which prevents the heat-shrinkable film from lifting. In all the drawings used below, the structure of the apparatus is shown in a simplified manner for convenience of explanation.

  First, the code | symbol 1 shown by FIG. 1, FIG. 2 represents the container conveyance apparatus provided with the upper row | line | column suppression part of 2 rows which prevents the heat shrinkable film from rising from a container, a shift | offset | difference, etc. FIG. The container transport apparatus 1 is mainly composed of a lower transport section 11 that transports the container A and the heat shrinkability mainly on the upper right side of the container A when viewed from the transport direction of the container A (direction of arrow V; see FIGS. 1 and 2). The upper restraining part 12 which suppresses the floating of the film F and the upper restraining part 13 which mainly suppresses the lifting of the heat shrinkable film on the upper left of the container A are provided (see FIGS. 1 and 2).

  The lower conveyance part 11 conveys the container which covered the cylindrical heat-shrinkable film F along the arrow V direction (refer FIG. 1, FIG. 2). The lower transport unit 11 is a belt conveyor that includes a motor pulley 111 as a power source and rotates the belt in cooperation with the head pulley 112. The belt of the belt conveyor includes a carrier side belt 113 and a return side belt 114, and the container A is conveyed on the carrier side belt 113 in the direction of arrow V (see FIG. 1).

  In this embodiment, a belt conveyor is used for the lower conveyance unit 11, but the lower conveyance unit 11 of the present invention is not limited to the belt conveyor. An apron conveyor, a roller conveyor, or the like can be used depending on the material of the container to be packaged, the heating temperature for heat shrinkage, the conveyance speed, and the like. Moreover, in this invention, the conveyance direction of the said container is not limited to a linear direction. That is, the lower conveyance unit is not limited to a straight conveyor, and can be curved by providing a turntable or the like as appropriate according to the installation location.

  Next, the upper restraining parts 12 and 13 prevent the heat-shrinkable film F covering the container from floating or slipping from the container being transported on the lower transporting part 11. Take on. The upper restraining portion 12 (13) according to the present embodiment is a belt conveyor provided with an inclination (inclination angle θ) at the tip, and the belt conveyor includes a motor pulley 121 (131) as a power source and a head. The belt is rotated by the roller 122 (132) and the snap roller 123 (133) (see FIG. 1). Accordingly, the upper restraining portion 12 (13) can also be transported more smoothly by rotating the upper restraining portion 12 (13) at an appropriate rotational speed with respect to the transport speed of the lower transport portion 11 by a belt conveyor or the like.

  In addition, when the heat-shrinkable film F covered on the container A conveyed on the lower conveyance unit 11 is lifted, the belt 124 (134) on the lower surface side of the upper deterring unit 12 (13) is By bringing the upper edge peripheral edge F1 of the heat-shrinkable film F into contact with an appropriate pressure, the heat-shrinkable film F can be lifted or displaced. However, if the pressure when the belt 124 (134) is in contact with the upper edge F1 of the heat-shrinkable film F is too strong, the heat-shrinkable film F may become wrinkles or the cylindrical shape may collapse. To do. On the other hand, when the pressure is too weak, the heat shrinkable film F cannot be sufficiently lifted. Therefore, it is desirable to apply an appropriate urging force in the arrow W direction by providing an elastic body on the upper side of the belt 124 (134) (see FIG. 1).

  In the present invention, the upper restraining portions 12 and 13 are not limited to two rows. Depending on the shape of the container, the processing capacity of the packaging line, the operating environment, and the like, two or more rows of upper deterrence units can be provided. Alternatively, it is possible to provide an upper restraining portion again after the upper restraining portion to prevent the heat-shrinkable film from rising again.

  In the present embodiment, a belt conveyor is used for the upper restraining portions 12 and 13, but the upper restraining portion of the present invention is not limited to the belt conveyor. A roller conveyor may be used according to the material of the heat-shrinkable film to be packaged, the shape and material of the container, and the like. Even when a conveyor belt is used, the material of the belt is not particularly limited, and a resin belt, a black rubber belt, a modular belt, or the like may be used. Furthermore, a heat-resistant belt can be used according to the intended purpose of the container to be packaged, and antibacterial / antifungal properties, non-adhesiveness, etc. can be imparted to the conveyor belt by coating or the like.

  Further, in the present embodiment, the upper restraining portions 12 and 13 are provided with snap rollers 123 (133), so that the end on the side of the container B in the approach direction (see arrow V) is inclined (inclination angle θ). Belt conveyor (see FIG. 3). Therefore, when the heat-shrinkable film F placed on the container A is conveyed from the direction of the arrow V in a floating state, the heat-shrinkable film F can be gradually pressed from above ( (See FIG. 3). Thereby, it can position to a predetermined packaging position by pressing down the heat-shrinkable film F gradually. Further, providing the snap pulley 123 (133) to increase the inclination angle θ can contribute to preventing the belt from slipping.

  In addition, the angle of inclination | tilt angle (theta) can be made into an optimal angle according to the material, shape, etc. of a heat-shrinkable film. However, the present invention is not limited to the provision of the inclination (inclination angle θ) to the upper restraining portions 12 and 13. For example, depending on the relationship between the shape of the container and the heat-shrinkable film, an appropriate curved surface may be formed at the end of the upper restraining portion by increasing the shaft diameter of the head pulley 122 (132) of the upper restraining portion 12 (13). By making it, the heat-shrinkable film can be sufficiently lifted.

  Moreover, in this embodiment, the height h of the upper suppression parts 12 and 13 can be adjusted according to the shape of the container to package (refer FIG.1, FIG.4, FIG.5). The height h can be increased when packaging a container having a deep bottom, and the height h can be decreased when packaging a container having a shallow bottom. Thereby, regardless of whether the container has a deep bottom or a shallow bottom, the heat-shrinkable film placed on the container can be prevented from floating.

  In this embodiment, the upper restraining portions 12 and 13 can be moved up and down by manually operating the up and down operation handle 14. However, the present invention does not limit the means for moving the upper restraining portion up and down. For example, a simple manual type using a spline shaft or the like, or an electric type using a motor or the like may be used. Or you may utilize the control apparatus which is linked with the computer which inputs the dimension of a container, etc., and determines the height h automatically based on the numerical value input into the said computer.

  Moreover, in this embodiment, the space | interval width w of the upper suppression parts 12 and 13 can be adjusted (refer FIG.2, FIG.4, FIG.5). When the width and diameter of the container covering the cylindrical heat-shrinkable film is large, the interval width w can be increased, and when the width and diameter of the container are small, the interval width w can be decreased. This prevents the heat-shrinkable film from being lifted regardless of the size and width of the container and the size of the heat-shrinkable film to be packaged.

  Furthermore, in this embodiment, the width of the interval width w can be adjusted by manually operating the interval width operation handle 15 and moving the upper restraining portions 12 and 13 to the left and right. However, the means for adjusting the interval width w is not particularly limited in the present invention. For example, a simple manual type using a spline shaft or an electric type using a motor or the like may be used. Or it is good also as a control apparatus which is linked with the computer which inputs the dimension of a container, etc., and determines the space | interval width w automatically based on the numerical value input into the said computer. Hereinafter, based on FIG. 4, FIG. 5, it demonstrates that this container conveyance apparatus 2 can prevent the lifting of a heat-shrinkable film by adjusting the space | interval width w according to the shape etc. of the container to package.

  First, FIG. 4 shows a state in which the interval width w between the two rows of the upper restraining portions 12 and 13 is narrow as viewed from the front. The container B to be packaged was designed to accommodate a soft ice cream cone confectionery portion provided with a container conical head B2 having a substantially conical shape on a container opening B1 having a substantially truncated cone shape. It is a synthetic resin container. And it is the state installed in the lower conveyance part 11 in the state which turned down the opening part B1 of this container, and has covered the cylindrical heat-shrinkable film F in the container opening part B1 vicinity of the said container B. State.

  In the container transport device according to the present embodiment, when the heat-shrinkable film F is slightly lifted from the container B, it comes into contact with the belt 124 (134) on the lower surface side of the upper restraining portions 12 and 13, and a predetermined packaging schedule is made. The height h is set to such a height that it can be returned to the position (see FIG. 4). Furthermore, in this embodiment, since the container cusp B2 not covered with the heat-shrinkable film F does not contact the upper restraining portions 12 and 13, the two rows of upper restraining portions 12 and 13 are viewed from the front. These are provided on the left and right sides of the container cusp B2 (see FIGS. 3 and 4). At that time, in order to effectively prevent the heat-shrinkable film F from being lifted, the interval width w is narrowed until the container cusp B2 does not contact the upper restraining portions 12 and 13. Thus, by providing a plurality of rows of upper restraining portions 12 and 13 and narrowing the interval width w according to the shape of the container B, the container B has the shape having the container cusp B2. Moreover, the packaging of the state which stuck the said heat-shrinkable film F only to container opening part B1 can be given.

  Next, FIG. 5 shows a state in which the interval width w between the two rows of upper restraining portions 12 and 13 is wide as viewed from the front. The container C to be packaged is a container for containing a beverage or the like, and is a substantially truncated cone container having an outer diameter larger than that of the container B. And it is the state which has covered the cylindrical heat-shrinkable film F in the container opening part C1 vicinity of the said container C, and is a state which does not cover C2 of a container bottom part. And since the said container bottom part C2 which is not packaged with the heat-shrinkable film F does not contact the upper restraining parts 12 and 13, the space width w of the upper restraining parts 12 and 2 of 2 rows was made wide according to the width | variety of the container C2. State. As described above, by providing a plurality of rows of upper restraining portions 12 and 13 and adjusting the interval width w according to the shape of the container, the heat-shrinkable film is provided only in the vicinity of the container opening C1 of the container C having a large mouth. Can be packaged with F.

  And although not shown in figure, it can also be set as the 1st row | line | column upper restraint part by making the upper restraint parts 12 and 13 provided in 2 rows approach, and block | closing the space | interval width | variety completely. Thereby, also when heat shrink-wrapping the whole outer peripheral wall of a container, the lifting of a heat-shrinkable film can be suppressed effectively.

  Moreover, in this invention, about the shape of the container to package, it is not limited to the shape where a side wall has a curved surface like a substantially truncated cone shape, a cone shape, etc. For example, a polygonal pyramid-shaped container such as a triangular pyramid or a quadrangular pyramid may be used. And in this invention, it is not limited to the case where it packages in a container opening part. It is also possible to wrap only in the middle part of the outer peripheral wall of the container.

  Although not shown, the shape of the container to be packaged is not slipped on the outer peripheral wall or flange portion of the container when the heat-shrinkable film is thermally shrunk, or a protrusion as a positioning part is provided. It is desirable to provide it. By providing such a protrusion on the container, the heat-shrinkable film is caught on the protrusion, and the floating from the container can be more effectively prevented. In the present invention, the container to be packaged is not limited to the use for packaging one container with a heat-shrinkable film. For example, it can also be used as a container transport device in the case of packaging a heat-shrinkable film on the side surface of the container group in order to pack a plurality of container groups together.

  In addition, in this invention, it does not limit about the raw material used as a heat-shrinkable film. For example, it may be a polystyrene-based or polyester-based stretched film, or a heat-shrinkable polyvinyl chloride film. Further, the method for forming the heat-shrinkable film into a cylindrical shape is not particularly limited. For example, a belt-shaped heat-shrinkable film obtained by pasting both end portions together and cutting them can be used. Alternatively, the cylindrical heat-shrinkable film may be cut so as to be in close contact with the tapered portion of the container.

  As described above, the material of the heat-shrinkable film can be appropriately selected in consideration of the shape of the container and the environment in which it is used. And in this invention, although it does not specifically limit also about the raw material used as a container, The raw material which does not deform | transform at the heating temperature to a heat-shrinkable film is preferable. For example, polyethylene terephthalate resin or polypropylene resin is suitable. Or a glass container etc. may be sufficient.

  Here, the container C transported by the container transport device 1 is transported to a subsequent heat shrink tunnel (not shown) and heated by the heat shrink tunnel. Then, the entire surface of the heat-shrinkable film F is brought into close contact with the container C by heat-shrinking. However, in this invention, it is not necessarily limited to installing the container conveying apparatus 1 and the said heat contraction tunnel independently. The container transfer device 1 according to the present invention may be extended into the heat shrink tunnel and integrated.

  FIG. 6 is a front view of a second embodiment of the container transport device according to the present invention.

  The code | symbol 2 shown by FIG. 6 is a container conveying apparatus provided with the heat source for temporarily fixing the heat-shrinkable film packaged in a container to the said container. The container transport device 2 includes a lower transport unit 21 that transports the container D with the heat-shrinkable film F covered, and an upper view that suppresses the lifting of the heat-shrinkable film mainly in the upper right of the container as viewed from the front in FIG. The restraining part 22, the upper restraining part 23 which mainly suppresses the floating of the heat-shrinkable film F on the upper left of the container, and the hot air fans 26 and 26 which temporarily fix the heat-shrinkable film F to the container are provided. (See FIG. 6). The height (arrow Y; see FIG. 6) of the upper restraining portions 22, 23 can be adjusted by the vertical operation handle 24, and the interval width (arrow) of the upper restraining portions 22, 23 can be adjusted by the spacing width operation handle 25. Z; see FIG. 6) can be adjusted.

  First, for the container D, the outer peripheral wall of the container opening is packaged with the heat-shrinkable film F, and the heat-shrinkable film F that is lifted or deviated from the intended packaging position of the container D is the upper restraining portions 22, 23. , And lift and deviation from the container D are eliminated. And it is conveyed to the installation place of the hot air machines 26 and 26 in this state. Subsequently, the hot air blowers 26, 26 spray hot air near the opening of the container D to shrink only the vicinity of the opening of the heat-shrinkable film F, and neck (temporarily fix) that portion. . Although not shown, the entire heat-shrinkable film F is heated and shrunk in a subsequent heat-shrinking tunnel of the container transport device, and the entire surface of the heat-shrinkable film is brought into close contact with the container D for packaging (main fastening). .

  In the present invention, the temporary fixing method is not limited to hot air injection by the hot air fan. For example, it is possible to use means such as heat shrinkage by high-temperature steam injection. In the present invention, the part of the container to be temporarily fixed is not limited. For example, the skirt of the container D may be fixed at four points, or the entire outer peripheral wall of the skirt may be temporarily fixed. Alternatively, the intermediate portion of the outer peripheral wall of the container D may be temporarily fixed.

  Furthermore, although the temperature for temporarily fixing can be suitably set according to the heat shrink temperature of the heat-shrinkable film F to be used, from the heating temperature of the heat-shrinking process of the entire heat-shrinkable film F performed after temporary fixing. It is desirable that the temperature be lower. Moreover, the heat source for temporarily fixing is not limited to providing a hot air blower in two places like this embodiment. For example, a plurality of hot air blowers may be provided at regular intervals on the line of the container transfer device and temporarily fixed.

  Moreover, although it does not limit about the control method of each hot air fan in this invention, when providing a some hot air fan, it is preferable that each hot air fan becomes a structure which can control temperature and an air quantity independently. By adopting a structure in which the heating temperature is increased stepwise in this way, deformation of the container D caused by heating the container D locally at a high temperature can be prevented. For example, a plurality of heat sources may be provided along the lower conveyance unit, and the set temperature of the first heat source through which the container D first passes is set to be the lowest, and the set temperature of the subsequent heat source is set to be gradually increased. it can.

  And in this invention, as shown in FIG. 7, it can also convey, rotating the container E on the lower conveyance part 32 (arrow R; refer FIG. 7). By rotating the container E, hot air can be sprayed evenly on the outer peripheral wall of the bottom of the container E to be temporarily fixed (arrow W; see FIG. 7). Thus, heat is sprayed while rotating the container E, so that hot air is uniformly applied to the outer peripheral wall of the skirt, so that there is no unevenness in heating and local deformation of the container E can be prevented. The heat-shrinkable film F can be temporarily fixed.

  In the present invention, the means for rotating the container is not limited. For example, when viewed from the conveyance direction side of the container E, two independent belt conveyors are provided on the left side and the right side of the lower conveyance unit 32, and the container E is changed by changing the left and right conveyance speeds of the belt conveyor to different speeds. The container E may be rotated by stretching a resin wire or the like that does not damage the container along the conveyance direction of the container E.

  FIG. 8 is a process diagram for explaining the heat shrink wrapping system including the container transport device according to the present invention. Hereinafter, heat shrink wrapping using the container transport device and method according to the present invention will be briefly described with reference to FIG.

  First, the container filling device is installed on the transport line with the opening of the container to be packaged facing downward. Then, the heat-shrinkable film (label) cut into a cylindrical shape is dropped from above the container by the labeler device. Here, an appearance inspection is performed to determine whether the heat-shrinkable film is covered at a predetermined planned packaging position by a label inspection apparatus. As a result, containers that are not covered with the heat-shrinkable film are excluded.

  Subsequently, the heat-shrinkable film that is covered with the container is lifted or displaced by the container transport device according to the present embodiment, and temporarily fixed at a predetermined planned packaging position. Then, the entire heat-shrinkable film is heat-shrinked by a subsequent heat-shrinking tunnel and is brought into close contact with the container. Finally, after the defective product in which the container is deformed or the label is wrinkled by heating is removed by the product inspection device, the packaged good product is boxed by the product boxing device.

  In addition, about the container conveying apparatus and method which concern on this invention, it is not necessarily limited to being used based on the process drawing shown by FIG. And in this invention, it is not limited to installing the said container conveyance apparatus and the said heat contraction tunnel independently. For example, the heat source for temporarily fixing the container may be provided in front of the heat shrink tunnel, and the lower transfer unit and the upper restraint unit may be continuously provided in the heat shrink tunnel so as to be integrated with the heat shrink tunnel.

  The container transport device according to the present invention can be used for a container transport device used for heat shrink wrapping in which a heat shrink film is securely attached to a predetermined position of a container. And it can utilize also for the heat-shrink packaging system provided with the said container conveying apparatus, and a container conveying method.

1 is a side view of a first embodiment according to the present invention. It is a top view of the first embodiment. It is a simplified side view for demonstrating the mechanism in which the container conveying apparatus which concerns on this invention prevents the lifting of a heat-shrinkable film. It is a simplified front view for demonstrating the mechanism in which the container conveying apparatus which concerns on this invention prevents the float of a heat-shrinkable film. It is a simplified front view for demonstrating the mechanism in which the container conveying apparatus which concerns on this invention prevents the float of a heat-shrinkable film. It is a front view of 2nd Embodiment which concerns on this invention. It is a simplified diagram for demonstrating the container conveyance apparatus which concerns on this invention. It is process drawing for demonstrating the heat-shrink packaging system provided with the container conveying apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2, Container conveying apparatus 11, 21, 31 Lower conveyance part 12 (13), 22 (23), 31 (32) Upper restraining part 14, 24 Vertical operation handle 15, 25 Spacing operation handle A, B, C, D, E Container F Heat shrinkable film

Claims (7)

A lower transport section that transports the container in which the tubular heat-shrinkable film is attached from the container bottom side in a state where the container opening is placed facing down;
A plurality of rows of upper restraining sections extending in the transport direction of the transport section in an upper region facing the lower transport section;
A container transport device that transports the container while the bottom of the container enters the space formed between the upper restraining portions and the upper restraining portion suppresses the lifting of the heat-shrinkable film attached to the container.   The container transfer device according to claim 1, wherein an interval width of the upper inhibition portion is adjustable.   A heat source is provided for temporarily fixing the heat-shrinkable film to the container by applying heat to the container conveyed on the lower conveyance unit to shrink a part of the heat-shrinkable film. The container transport device according to claim 1.   The container transport device according to claim 3, wherein the heat source has an arrangement configuration in which heat is applied toward the vicinity of the container opening.   The said lower conveyance part conveys, rotating a container in a container circumferential direction, The container conveyance apparatus of Claim 3 characterized by the above-mentioned.   A heat-shrinkable film packaging system comprising at least the container transport device according to any one of claims 1 to 5. A container transport method in which the following steps (1) to (3) are performed simultaneously.
(1) A step in which a container in which a cylindrical heat-shrinkable film is deposited from the container bottom side is transported with the opening of the container facing down.
(2) The process of suppressing the part which pinched | interposed the said container bottom part from upper direction among the upper end part periphery of the said heat-shrinkable film seeing from the conveyance direction of the said container.
(3) A step of heating the vicinity of the opening of the container to which the heat-shrinkable film is attached.

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