JP2007106423A - Lateral sealer, pillow packaging device, and shrink package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lateral sealer which prevents an angle part from being generated on the lateral seal end sections of a shrink package. <P>SOLUTION: This lateral sealer 6 weld-seals a film wrapping an article 3 to be packaged into a cylindrical shape in a direction being orthogonal to the feeding direction of the film in front of and behind the article 3 to be packaged in a pillow packaging process. The lateral sealer 6 is equipped with a heatable cutting blade 14 and a receiving blade 15. The cutting blade 14 has chamfered sections 14b and 14b for weld-sealing the lateral seal end sections 12 in a chamfer so as to be adjacent with both ends of a pair of linear sections 14a and 14a in a manner to spread outward into a fan shape from each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a horizontal sealer, a pillow wrapping apparatus, and a shrink wrapping body, and more specifically, a horizontal sealer that prevents a sharp corner from being generated at the end of a horizontal seal in a shrink process and a pillow wrapping apparatus including the horizontal sealer. And a shrink wrapping body having no corners produced by the pillow wrapping apparatus.

  Conventionally, in a pillow packaging device (horizontal pillow packaging device) for producing a shrink package, for example, as shown in FIG. 7, a force adjusting device from a raw roll 1 formed by winding a heat-shrinkable film into a roll shape. The film fed out in a sheet shape via 1a and the feeding device 1b is supplied to the bag making device 2, and the bag making device 2 determines the packaged product 3 while making bags according to the shape of the packaged product 3. It is thrown in at a pitch, formed into a tube shape by a vertical sealer (heat sealer in the film longitudinal direction) 4, transported by a feed conveyor 5, and front and rear of the packaged product 3 by a horizontal sealer (heat sealer in the film width direction) 6. One package body 7 is formed by fusing and sealing (sealing and cutting), and then the package body 7 is passed through a shrink tunnel 8 and subjected to heat treatment to form a final product. It had gained the link package 9.

  Since the series of steps described above are performed continuously (not intermittently) and at a high speed, the horizontal sealer 6 is, for example, a rotary type as shown in FIG. Is generally adopted. The cutting blade 10 is formed in a straight line (extends in the direction perpendicular to the drawing sheet), and the blade tip is rounded so that sealing and cutting can be performed simultaneously (see FIGS. 8B and 8C). . The tip of the receiving blade 11 is formed in an arcuate surface having the same curvature as the rotation radius r around the axis in the case of the rotary type (see 11a in FIG. 8B), and in the box motion type, it is planar. (Refer to 11b in FIG. 8C). In such a horizontal sealer 6, since the fusing seal is performed in a direction orthogonal to the film feeding direction (film width direction), the film end 12 serving as the horizontal sealing end of the package is blown at 90 °. (Cut) (see FIG. 8D).

  In the fusing seal using the conventional horizontal sealer as described above, the lateral seal end 12 cannot be brought into close contact with the packaged product 3 after the shrink finish performed in the next process, as shown in FIGS. 9 (a) to 9 (d). In other words, the corners 13 having a pointed shape remain on the four sides of the shrink wrap 9. This is because the shrinkage rate of the heat-shrinkable film is limited (about 50 to 70%), so that the transverse sealer 6 is cut by the cutting blade 10 and the receiving blade 11 that are linearly provided in the width direction of the film. This is because the seal end portion 12 cannot be completely adhered to the outer surface of the packaged product 3 after the shrink finish.

  The heat-shrinkable film is stretched in the machine direction and the transverse direction at the time of production and has a property of returning to its original state when heated, and shrink wrapping is performed using this property. When the film is melted in the direction orthogonal to the feeding direction, the lateral seal end 12 is in the state most spaced from the outer surface of the packaged product 3 regardless of the shape of the packaged product. Therefore, even if a heat-shrink film having a large shrinkage rate is used, the lateral seal end 12 cannot be brought into close contact with the packaged product 3, and the more the finish is made in the contracted state, the more the lateral seal end 12 is It becomes a hard and pointed corner 13 like the tip of a sharp blade.

  If such a corner portion 13 protrudes in the four directions of the shrink package 9 that is the final product, the appearance of the packaged product 3 is not good and the appearance is impaired. In particular, when the packaged product 3 is circular or rounded, the appearance is significantly reduced. Moreover, since the shrink package 9 is bulky due to the corner portion 13, it is disadvantageous during packaging, transportation, storage, and display. And if the sharp corner 13 is inadvertently touched, there is a concern of injury. Moreover, the corner | angular part 13 may be wrinkled on other articles | goods.

  This invention is made | formed in view of such a situation, and it aims at providing the horizontal sealer, the pillow packaging apparatus, and the shrink packaging body which did not generate | occur | produce a corner | angular part at the horizontal seal end part of a shrink packaging body.

(1) The horizontal sealer of the present invention is used for fusing and sealing a film in which a packaged product 3 is wrapped in a cylindrical shape in a pillow packaging process in a direction perpendicular to the film feeding direction before and after the packaged product 3. Horizontal sealer 6
A heatable cutting blade 14 and a receiving blade 15 are provided, and chamfered portions 14b and 14b for fusing and sealing the lateral seal end portion 12 in a chamfered shape are provided at both ends of the cutting blade 14. Lateral sealer.

  According to such a configuration, the lateral seal end portions 12 and 12 of the package 7 are fused and sealed in a chamfered manner by the chamfered portions 14b and 14b, and then the package 7 is heated through the shrink tunnel 8 and heated. Even if it processes, a corner | angular part will not generate | occur | produce. The horizontal sealer 6 may be a rotary type or a box motion type.

(2) It is preferable that the chamfered portions 14b and 14b are formed so as to be spread toward each other outward. In this way, by forming the chamfered portions 14b and 14b so as to spread outward toward each other, a good chamfering effect can be obtained, and the film is slightly misaligned. Also, the chamfered portions 14b and 14b can be made to correspond appropriately to the film end portions.

(3) It is preferable that the cutting blade 14 has chamfered portions 14b and 14b connected to both ends of a pair of linear portions 14a and 14a disposed in parallel with each other at a predetermined interval. If it does in this way, although the part fuse | melted by the cutting blade 14 and the receiving blade 15 will be the scrap 17, the horizontal seal edge parts 12 and 12 of the package 7 will be chamfered by the chamfering parts 14b and 14b. Therefore, even if the package 7 is passed through the shrink tunnel 8 and subjected to heat treatment, corners are not generated.

(4) The receiving blade 15 may be provided with a suction hole 16 for adsorbing the scrap 17 melted by the cutting blade 14. By scraping the scrap 17 generated when the film is melted by the horizontal sealer 6 to the suction hole 16, the scrap 17 can be easily processed.

(5) The pillow wrapping apparatus of the present invention includes a bag making device 2 that forms a sheet-like film fed from the raw fabric roll 1 in accordance with the packaged product 3, and
A vertical sealer 4 that seals the film in the longitudinal direction in order to form a film into which the packaged product 3 has been charged;
Conveying means 5 for conveying the packaged product 3 together with the film;
The horizontal sealer 6 according to any one of the items (1) to (4);
A shrink tunnel 8 for heat-treating a package 7 in which the packaged product 3 is sealed with a film, and further,
A vacuum suction means 50 for vacuuming the suction hole 16 of the receiving blade 15 of the horizontal sealer 6;
And a recovery device 60 for recovering the scrap 17 adsorbed in the suction holes 16.

According to such a configuration, the film is drawn out in a sheet form from an original fabric roll 1 formed by winding a heat-shrinkable film into a roll shape, and a bag is produced according to the shape of the article to be packaged 3 by the bag making machine 2. While the packaged product 3 is introduced at a constant pitch and the film is formed into a tube shape by the vertical sealer 4, the packaged product 3 is transported together with the film by the conveying means 5, and the horizontal sealer provided with the chamfered portions 14 b and 14 b. 6, one package body 7 is formed by fusing and sealing the front and back of the packaged product 3, and then the package body 7 is heat-treated through the shrink tunnel 8, thereby shrinking without a corner as a final product. The package 9 can be obtained.
In such a pillow packaging process, scrap 17 is generated in the fusing and sealing process by the horizontal sealer 6, but the suction hole 16 provided in the receiving blade 15 is evacuated by the evacuation means 50, After the scrap 17 is adsorbed to the suction holes 16, it can be recovered by the recovery device 60.

(6) The vacuum suction means 50 includes a vacuum generator 38 and a vacuum breaker valve 41 connected to the suction hole 16, and the recovery device 60 is for transferring the scrap 17 discharged from the receiving blade 15. The suction pipe 42, a suction force generating means 46 for making the suction pipe 42 negative pressure, and a scrap collecting means 47 connected to the suction pipe 42 may be provided. In this way, when the scrap 17 is generated, the suction hole is evacuated by the vacuum generator 38 so that the scrap 17 is adsorbed to the receiving blade 15, and the suction hole 16 is opened to the atmosphere by the vacuum breaker valve 41 at an appropriate timing. The scrap 17 can be discharged by being opened, and can be recovered by the scrap recovery means 47 via the suction pipe 42 which has been made negative pressure by the suction force generation means 46.

(7) The shrink wrapping body of the present invention is the shrink wrapping body 9 manufactured by the pillow wrapping apparatus according to any one of (5) and (6) above, and has the chamfered portions 14b and 14b. The transverse seal end 12 is fused and sealed by a transverse sealer 6 provided with a cutting blade 14.

  In such a shrink wrap 9, there is no corner at the lateral seal end 12, so the appearance of the packaged product 3 is improved. Moreover, it is not bulky and does not become disadvantageous when packing, transporting, storing or displaying. And you don't get hurt by touching carelessly. In addition, other articles or the like are not wrinkled.

  Since the horizontal sealer of the present invention is provided with a chamfered portion for fusing and sealing the end portion of the horizontal seal in a chamfered form on a heatable cutting blade, the end portion of the horizontal seal can be cut and sealed in a chamfered shape. Then, even if the package is passed through the shrink tunnel and subjected to heat treatment, no corners are generated, and a shrink package without corners can be obtained.

  The pillow wrapping apparatus of the present invention can obtain a shrink package without corners as a final product by fusing and sealing the front and back of a packaged product with a horizontal sealer having a chamfered portion. The scrap generated in the process can be recovered by the recovery device after being adsorbed by evacuating the suction holes provided in the receiving blade by the vacuuming means.

  Since the shrink package of the present invention does not have corners at the end of the horizontal seal, the appearance is improved. Moreover, it is not bulky and does not become disadvantageous when packing, transporting, storing or displaying. And you don't get hurt by touching carelessly. In addition, other articles or the like are not wrinkled.

Hereinafter, a horizontal sealer, a pillow packaging device, and a shrink packaging body according to the best embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows the structure of a pillow packaging apparatus. This pillow wrapping apparatus includes a bag making device 2 that forms a sheet-like film fed from a raw roll 1 formed by winding a heat-shrinkable film into a roll shape, and a product to be packaged 3. A vertical sealer 4 that seals the film in the longitudinal direction in order to form the charged film into a cylindrical shape, a conveying means 5 such as a belt conveyor for conveying the packaged product 3 together with the film, and a chamfered portion A rotary horizontal sealer 6 having a heatable cutting blade and a receiving blade, and a shrink tunnel 8 for heat-treating a package 7 in which a packaged product 3 is sealed and wrapped with a film. A vacuum suction means 50 for evacuating a suction hole provided in a receiving blade of the sealer 6 and a recovery device 60 for recovering scrap adsorbed in the suction hole are provided.

  In the pillow wrapping apparatus configured as described above, the film is pulled out from the raw roll 1 into a sheet shape, and the packaged product 3 is formed at a constant pitch while making a bag according to the shape of the packaged product 3 by the bag making device 2. After the film is formed into a tube shape by the vertical sealer 4, the packaged product 3 is transported together with the film by the transport means 5, and the front and back of the packaged product 3 are fused and sealed by the horizontal sealer 6 having a chamfered portion. Then, a single package body 7 is formed, and then the package body 7 is passed through the shrink tunnel 8 and heated, for example, as shown in FIGS. 6 (a) to 6 (d). A shrink package 9 having no corners at 12 can be obtained as a final product.

  In such a pillow packaging process, in the fusing sealing process by the horizontal sealer 6, the horizontal sealer 6 has a pair of heatable linear portions 14a and 14a as shown in FIGS. Since a cutting blade 14 comprising chamfered portions 14b and 14b that are continuous with the straight portions 14a and 14a and are outwardly spread toward each other is provided, scrap 17 is generated between the packaging bodies 7 and 7. However, the suction hole 16 provided in the receiving blade 15 is evacuated by the evacuation means 50 to adsorb the scrap 17 to the suction hole 16, and then the suction hole 16 is opened to the atmosphere at an appropriate timing. The scrap 17 is discharged and can be recovered by the recovery device 60.

  More specifically, the original fabric roll 1 is detachably and rotatably supported by support means (not shown) provided in the apparatus, and from the original fabric roll 1 via the force adjusting device 1a and the feeding device 1b. The fed film is supplied to the bag making machine 2. In the bag making machine 2, a bag making operation (forming operation) is performed such that the film is covered from above according to the shape of the product 3 to be packaged, and the product 3 to be packaged conveyed by a belt conveyor or the like is bagged at a predetermined timing. The film is formed into a film. Subsequently, the both sides of a film are welded by the vertical sealer 4 in the lower part of the to-be-packaged goods 3, and a film is formed in a tube shape.

  The horizontal sealer 6 used in the fusing and sealing process to be performed next is provided with two rotating bodies 6A and 6B (see FIG. 4) that are driven to rotate in the film feeding direction in synchronization with each other with the film interposed therebetween. For example, the cutting blade 14 as shown in FIGS. 2 (a) and 2 (d) and the receiving blade 15 as shown in FIGS. 2 (c) and 2 (e) are detachably attached by screwing or the like. Is done. With such a configuration, when the shape of the article 3 to be packaged is different and the film folding width is changed, the cutting blade 14 can be replaced with an appropriate size. Normally, the receiving blade 15 does not need to be replaced.

  As shown in FIGS. 2 (a) and 2 (d), the cutting blade 14 attached to the upper rotating body 6A is provided at both ends of a pair of linear portions 14a, 14a arranged in parallel with each other at a predetermined interval. The chamfered portions 14b and 14b are connected to each other, and the chamfered portions 14b and 14b are formed so as to be spread toward each other outward so as to correspond to both ends of the film folding width. Has been. On the other hand, as shown in FIG. 2C, a plurality of suction holes 16 are arranged at a predetermined interval on the center line of the receiving blade 15 attached to the lower rotating body 6B. The suction hole 16 is preferably formed to have a diameter of about 2 to 3 mmφ, for example, but the size is not particularly limited.

  When the cutting edge 14 provided with such straight portions 14a, 14a and chamfered portions 14b, 14b and the film end serving as the lateral seal end 12 by the receiving blade 15 are fused and sealed, the chamfered portions 14b, 14b Since the lateral seal end 12 of the package 7 can be formed in a chamfered shape, as described above, no corners are generated in the shrink package 9 after passing through the shrink tunnel 8 (FIG. 6A). ) To (d)).

  For example, the cutting blade 14 that can be chamfered may be configured as in the reference example shown in FIGS. If the whole is formed in an arc shape with a relatively small radius as in the cutting blades 14c and 14c indicated by the solid line in FIG. 3A, the film length X to be scraped becomes large and the yield is drastically reduced. There is also a problem that the area of the receiving blade 15 becomes large. On the other hand, when the whole is formed in an arc shape with a relatively large radius, as in the cutting blades 14d and 14d indicated by the two-dot chain line in FIG. 3A, the film end is blown in a direction perpendicular to the feeding direction. Almost the same as in the conventional case, a sufficient chamfering effect cannot be obtained.

  Further, as shown in FIG. 3B, when the chamfered portions 14e and 14e are formed in an R shape having a large curvature, it may not be possible to cope with a positional deviation in the width direction of the film. That is, in the fusing and sealing process, the film may be slightly displaced in the direction (width direction) orthogonal to the feeding direction. If the chamfered portions 14e and 14e are formed in an R shape with a large curvature, the positional deviation is caused. Since the corresponding width becomes narrow, the film may not be melted. Further, as shown in FIGS. 3 (a) and 3 (b), when the cutting blade 14 is formed in an arc shape, there is a manufacturing problem that it is difficult to perform a delicate rounding of the cutting edge.

  For this reason, in the present embodiment, as described above, the cutting blade 14 is formed by a combination of straight portions (the straight portion 14a and the chamfered portion 14b) as shown in FIGS. 2 (a) and 2 (d). By forming, the area of the generated scrap can be reduced and the reduction in yield can be suppressed. In addition, since a wide range of misalignment can be secured for the chamfered portions 14b and 14b, the chamfered portions 14b and 14b can be made to correspond to the film end portions even if a slight misalignment occurs in the film. It becomes possible. Further, since the chamfered portions 14b and 14b are also formed straight, a delicate rounding of the cutting edge is facilitated.

  As shown in FIG. 3 (b), when the cutting blade 14 is configured to form a chamfered portion having a divergent shape on both sides of a single linear portion, the chamfered portion is shown in FIG. 2), the same chamfering effect as that of the cutting blade 14 shown in FIG. 2A can be obtained. In this case, since scrap can be generated on both sides of the film, the recovery device may be configured so that scrap can be recovered from both ends of the receiving blade 15. Moreover, since the scrap area is small, there is little decrease in yield.

  FIG. 4 shows the configuration of the horizontal sealer 6, and FIG. 5 shows a pneumatic circuit diagram. In these drawings, a rotating body 6A to which the cutting blade 14 is attached includes a sealer shaft 20a rotatably supported by a frame F via bearings 24a and 24a, and a main body portion 18a fixed to the sealer shaft 20a. The rotating body 6B to which the receiving blade 15 is attached includes a sealer shaft 20b that is rotatably supported by the frame F via bearings 24b and 24b, and a main body portion 18b that is fixed to the sealer shaft 20a. The sealer shafts 20a and 20b are connected to a drive source via a gear transmission mechanism (not shown), and are rotationally driven in the film feeding direction in synchronization with each other. The cutting blade 14 and the receiving blade 15 are moved at a predetermined timing (one (Each rotation) Fusing and sealing the meshing film in the width direction.

  Plate-shaped or cartridge-shaped heaters 19a and 19b are mounted in the main body portions 18a and 18b, and the heaters 19a and 19b are inserted into holes 21a and 21b formed in part of the sealer shafts 20a and 20b. The cutting blade 14 and the receiving blade 15 are heated by being connected to power supply devices 23a and 23b provided at the shaft ends of the sealer shafts 20a and 20b via the heater wires 22a and 22b, respectively.

  The plurality of suction holes 16 provided in the receiving blade 15 communicate with a single through hole 25 formed directly thereunder, and both ends of the through hole 25 are tightly plugged by plug bodies 26, 26. An intermediate portion of the through hole 25 is connected to one end of an intake / exhaust pipe 27 embedded through the main body 18b and the sealer shaft 20b, and the other end of the intake / exhaust pipe 27 is connected via a hose 28. It communicates with one end of an intake / exhaust lateral hole 29 drilled in the axial direction at the shaft end of the sealer shaft 20b, and the other end of the intake / exhaust lateral hole 29 is sealed with a plug body 30. An adsorption hole 31 and an exhaust hole 32 are opened in the middle of the hole 29.

  The suction hole 31 and the exhaust hole 32 are each independently sealed in a sealed state by an O-ring 34 or the like attached to the inside of a fixing ring 33 that is fitted on the sealer shaft 20b and fixed to the frame F. ing. Joints 35 and 36 corresponding to the suction hole 31 and the exhaust hole 32 are mounted on the fixing ring 33 with a phase difference of 180 °. The joint 35 corresponding to the suction hole 31 is connected to a vacuum generator (vacuum ejector or vacuum pump) 38 and a supply valve (electromagnetic valve) 39 via a hose 37, and the joint 36 corresponding to the exhaust hole 32 is The vacuum breaker valve (solenoid valve) 41 is connected via a hose 40. The vacuum generator 38, the supply valve 39, and the vacuum breaker valve 41 constitute the evacuation means 50 of the present invention.

  On the other hand, a collecting device 60 for collecting the scrap 17 adsorbed by the plurality of suction holes 16 of the receiving blade 15 is disposed at a position corresponding to the receiving blade 15 of the rotating body 6B directly below. The recovery device 60 includes a suction pipe 42 for transferring the scrap 17, a wind pipe 44 connected to the suction pipe 42, and a blower (suction force generating means of the present invention) 46 provided in the wind pipe 44. , A scrap collection box (scrap collection means of the present invention) 47. An opening 42 a is formed on one end side of the suction pipe 42 so as to be able to suck the scrap 17 corresponding to the receiving blade 15, and the other end side of the suction pipe 42 is an intake side connection port 45 of the wind pipe 44. It is connected to the.

  In the horizontal sealer 6 configured as described above, the suction hole 16 of the receiving blade 15 has the through hole 25, the intake / exhaust pipe 27, and the hose 28 in a certain rotation angle range before and after the cutting blade 14 and the receiving blade 15 are engaged with each other. The vacuum generator 38 communicates with the vacuum generator 38 through the intake / exhaust horizontal holes 29, the suction holes 31, and the joints 35 so that a negative pressure is obtained and the melted scrap 17 can be sucked. In a state where the scrap 17 is adsorbed in the suction hole 16 of the receiving blade 15, both the rotating bodies 6 </ b> A and 6 </ b> B rotate, and the receiving blade 15 is in an angle range 180 ° opposite to the meshing side (directly below). Then, the intake / exhaust lateral hole 29 is connected to the joint 36, and the supply valve 39 for operating the vacuum generator 38 is turned off (closed) to release the adsorbed state.

  Even if the suction state is released in this way, the scrap 17 remains in the state of being sucked into the suction hole 16 of the receiving blade 15, so that the vacuum breaker valve 41 is turned on, and the suction hole 16 of the receiving blade 15 passes through. The hole 25, the intake / exhaust pipe 27, the hose 28, and the intake / exhaust lateral hole 29 are set to a positive pressure state (atmospheric release state). Thereby, the scrap 17 can be discharged from the receiving blade 15. On the other hand, since the air inside the wind pipe 44 is constantly flowing toward the scrap collection box 47 while the blower 46 is always on, the inside of the suction pipe 42 and the hose 43 is always at negative pressure. Accordingly, the scrap 17 discharged from the receiving blade 15 is sucked into the suction pipe 42 from the opening 42 a, enters the inside of the wind pipe 44 through the hose 43, and is collected in the scrap collection box 47.

  As described above, the horizontal sealer 6 of the present invention is provided with the chamfered portions 14b and 14b for fusing and sealing the horizontal seal end portion 12 in the chamfered form on the heatable cutting blade 14, so that the horizontal seal end Since the portion 12 can be cut and chamfered in a chamfered shape, a corner portion is not generated even when the package body 7 is passed through the shrink tunnel 8 and subjected to heat treatment, and a shrink package body 9 having no corner portion can be obtained. it can.

  Moreover, the pillow packaging apparatus of this invention obtains the shrink package 9 without a corner | angular part as a final product by melt-sealing the front and back of the to-be-packaged goods 3 with the horizontal sealer 6 provided with the chamfering parts 14b and 14b. The scrap 17 generated in the fusing and sealing process by the horizontal sealer 6 is adsorbed by evacuating the suction hole 16 provided in the receiving blade 15 by the vacuum drawing means 50 and then collected by the collection device 60. be able to.

  And since the corner | angular part does not exist in the horizontal seal | sticker edge part 12, the appearance of the shrink package of this invention improves. Moreover, it is not bulky and does not become disadvantageous when packing, transporting, storing or displaying. And you don't get hurt by touching carelessly. In addition, other articles or the like are not wrinkled.

  Note that the present invention is not limited to the embodiment, and it is free to make design changes and improvements as necessary, as long as it does not depart from the gist of the invention. For example, the horizontal sealer 6 Is not limited to a rotary type, but may be a box motion type. The chamfered portions 14b and 14b do not necessarily have to be formed in a straight line and may be slightly curved. In the embodiment, the cutting blade 14 has a configuration in which divergent chamfered portions 14b and 14b are connected to both ends of the pair of linear portions 14a and 14a, but the divergent surface is formed at both ends of a single linear portion. A take part may be provided continuously.

It is a block diagram of the pillow packaging apparatus which concerns on embodiment of this invention. (A) Plan view of cutting blade of horizontal sealer, (b) Plan view of scrap, (c) Plan view of receiving blade, (d) Cross section of cutting blade, (e) Cross section of receiving blade. (A) The top view of the cutting blade as a reference example, (b) The top view of the cutting blade as another reference example. It is a block diagram which shows the partial cross section of the horizontal sealer. It is a pneumatic circuit diagram of the same vacuum drawing means. (A) The perspective view of the box-shaped shrink package, (b) The cross-sectional view, (c) The perspective view of the cylindrical shrink package, (d) The perspective view of the disk-shaped shrink package is there. It is a block diagram of the conventional pillow packaging apparatus. (A) Corresponding view of the cutting blade and receiving blade, (b) Enlarged corresponding view of the cutting blade and receiving blade, (c) Enlarged corresponding view of the cutting blade and receiving blade, (d) Plane of the package FIG. (A) The perspective view of the box-shaped shrink package, (b) The cross-sectional view, (c) The perspective view of the cylindrical shrink package, (d) The perspective view of the disk-shaped shrink package is there.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Original fabric roll, 2 ... Bag making machine, 3 ... Packaged article, 4 ... Vertical sealer, 5 ... Conveying means, 6 ... Horizontal sealer, 7 ... Packaging body, 8 ... Shrink tunnel, 9 ... Shrink packaging body, 12 ... side seal end part, 14 ... cutting blade, 14a ... straight line part, 14b ... chamfering part, 15 ... receiving blade, 16 ... suction hole, 17 ... scrap, 38 ... vacuum generator, 41 ... vacuum break valve, 42 ... Suction tube, 46 ... suction force generating means, 47 ... scrap collecting means, 50 ... vacuum drawing means, 60 ... collecting device, α ... opening angle

Claims (7)

In the pillow packaging process, a horizontal sealer (6) for fusing and sealing the film wrapped in the cylindrical shape of the packaged product (3) before and after the packaged product (3) in the direction perpendicular to the film feeding direction There,
A chamfering portion (14b) for fusing and sealing a lateral seal end portion (12) in a chamfered manner at both ends of the cutting blade (14), comprising a heatable cutting blade (14) and a receiving blade (15). (14b) is provided, The horizontal sealer characterized by the above-mentioned.   2. The horizontal sealer according to claim 1, wherein the chamfered portions (14 b) and (14 b) are formed so as to be spread toward each other outward.   In the cutting blade (14), the chamfered portions (14b) (14b) are connected to both ends of a pair of linear portions (14a) (14a) arranged in parallel with each other at a predetermined interval. The horizontal sealer according to claim 1 or 2, wherein   4. The suction blade (15) according to any one of claims 1 to 3, wherein the receiving blade (15) is provided with a suction hole (16) for adsorbing scrap (17) melted by the cutting blade (14). Horizontal sealer according to crab. A bag-making machine (2) for making a sheet-like film fed from the raw roll (1) according to the packaged product (3);
A vertical sealer (4) for sealing the film in the longitudinal direction in order to form a film into which the packaged product (3) has been charged;
Conveying means (5) for conveying the packaged article (3) together with the film;
A horizontal sealer (6) according to any of claims 1 to 4,
A shrink tunnel (8) for heat-treating a package (7) in which the packaged product (3) is sealed and sealed with a film, and
Evacuation means (50) for evacuating the suction hole (16) of the receiving blade (15) of the horizontal sealer (6);
A pillow packaging apparatus, comprising: a collecting device (60) for collecting the scrap (17) adsorbed in the suction hole (16). The vacuum suction means (50) includes a vacuum generator (38) connected to the suction hole (16) and a vacuum breaker valve (41).
The recovery device (60) generates a suction pipe (42) for transferring the scrap (17) discharged from the receiving blade (15) and a suction force for making the suction pipe (42) negative pressure. 6. A pillow wrapping apparatus according to claim 5, comprising means (46) and scrap recovery means (47) connected to the suction pipe (42).   A horizontal sealer (6) comprising a cutting blade (14) having a chamfered portion (14b) (14b), which is a shrink package (9) manufactured by the pillow wrapping apparatus according to claim 5 or 6. The shrink package is characterized in that the lateral seal end (12) is fused and sealed.

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