JP4937725B2 - Packaging container inspection apparatus and packaging container inspection method - Google Patents

Description

  The present invention relates to a packaging container inspection device and a packaging container inspection method.

  Conventionally, for example, when manufacturing a food having fluidity such as tea, juice, soup, alcohol, etc., that is, a packaging container for containing fluidity food, a packaging material such as a web or a plate is used. A packaging container is formed by sealing a predetermined portion of the material by a method such as heat sealing or ultrasonic sealing.

  And when using a web-like packaging material, in a filling machine, after making the said packaging material into a tube shape and sealing it longitudinally with a vertical sealing device, a fluid food is put into the tube-shaped packaging material. While filling, it is sealed by a horizontal sealing device at a predetermined interval and cut to form a pillow-shaped original container, and the original container is further formed into a predetermined shape to complete a packaging container. I am doing so.

  By the way, in order to seal the packaging material, the packaging material is sandwiched from both sides with a predetermined clamping pressure, and heat is applied to melt the resin on the surface of the packaging material, thereby fusing the packaging materials together. However, for example, if the clamping pressure is too high, the melted resin escapes from the seal portion due to the clamping pressure, the amount of resin remaining in the seal portion is insufficient, and a sealing failure may occur. As the sealing failure occurs, the fluid food in the packaging container leaks, or air enters the packaging container and the quality of the fluid food deteriorates.

  By the way, in general, in order to determine whether the sealing performance in the packaging container is high, inspection is performed by various packaging container inspection methods (for example, see Patent Document 1).

  For example, in the first packaging container inspection method, a packaging container is placed in a vacuum chamber, the vacuum chamber is depressurized, and it is determined whether there is a change in pressure, a change in components, etc. in the vacuum chamber. When there is a change, etc., it is determined that the sealing performance of the packaging container is low.

  In the second packaging container inspection method, when the packaging container is a can, a shock wave is applied to the end of the can, the reverberation sound of the shock wave is measured, and the reverberation sound at normal time and the reverberation sound measured When the reverberation sounds are different, it is determined that the sealing performance of the packaging container is low.

  In the third packaging container inspection method, the depression amount of the closure of the cup filled with the fluid food is filled with the gas, and the depression of the closure after the fluid food adsorbs the gas. Etc. are measured, and when the amount of dents cannot be confirmed, it is judged that the sealing performance of the packaging container is low.

  In the fourth packaging container inspection method, when the packaging container is an ampule, the packaging container is sandwiched between electrodes, the capacitance is measured, and the normal capacitance is compared with the measured capacitance. However, when the normal capacitance and the measured capacitance are different, it is determined that the sealing performance of the packaging container is low.

  In the fifth packaging container inspection method, when the packaging container is a pouch, pressure is directly applied to the packaging container to check whether the liquid food has leaked, and when the liquid food has leaked, the packaging container It is judged that the sealing performance of the is low.

Furthermore, in the sixth packaging container inspection method, the packaging container is placed in a vacuum chamber, the vacuum chamber is depressurized, and it is confirmed whether or not the temperature has changed due to latent heat of vaporization when fluid food leaks and vaporizes. When is changed, it is determined that the sealing performance of the packaging container is low.
JP 2005-283349 A

  However, among the conventional packaging container inspection methods, in the first packaging container inspection method, it is necessary to put the packaging container in the vacuum chamber, so that the occupied area increases and the cost increases. Further, even if the pressure in the vacuum chamber is reduced, if a predetermined gap (head space) is not formed in the packaging container, a change in pressure, a change in components, etc. cannot be detected. In addition, when trying to determine whether there is a change in the ingredients, for example, in a packaging container in which fluid food is trapped in the horizontal seal part, the fluid food in the horizontal seal part becomes noise, and the accuracy of the judgment of sealability Can not be raised.

  Further, in the second packaging container inspection method, when the packaging container is a paper container, it is not possible to generate a sufficiently strong reverberation sound, and it is not possible to increase the accuracy of determination of sealing performance.

  In the third packaging container inspection method, when the packaging container is a paper container, the shape of the paper container is unstable, and therefore the accuracy of the sensor for measuring the dent amount cannot be increased. Therefore, it is not possible to increase the accuracy of determination of sealing performance.

  In the fourth packaging container inspection method, when the packaging container is a paper container and the packaging material is laminated with an aluminum foil, the electrostatic capacity cannot be measured. Also, even when aluminum foil is not laminated, the accuracy of the sensor for measuring the capacitance is reduced in the part where the flap of the paper container is formed, the part where water droplets are attached to the surface of the paper container, etc. Can't be high. Therefore, it is not possible to increase the accuracy of determination of sealing performance.

  In the fifth packaging container inspection method, when the packaging container is a brick-type paper container, the paper container is damaged by applying pressure.

  Furthermore, in the sixth packaging container inspection method, since the packaging container needs to be placed in the vacuum chamber, the occupied area is increased and the cost is increased. In addition, even if the pressure in the vacuum chamber is reduced, if a predetermined gap is not formed in the packaging container, the fluid food cannot be vaporized and a change in temperature cannot be detected. Moreover, it takes a long time to check whether the temperature has changed, and the operability is low.

  The present invention solves the problems of the conventional packaging container inspection method, can reduce the cost, can increase the accuracy of the determination of the sealing performance, can increase the accuracy of the sensor, It is an object of the present invention to provide a packaging container inspection device and a packaging container inspection method that can improve the operability without damaging the packaging container.

  Therefore, in the packaging container inspection device of the present invention, the first and second reversing parts for reversing the packaging container, the expanding part for expanding the predetermined panel of the packaging container in accordance with the reversing, and the first The degree of curvature of the packaging container panel in the upright state of the packaging container before being inverted by the first inversion portion, and the packaging container panel after the packaging container is returned from the rollover state to the upright state by the second inversion portion. A degree-of-curvature determination processing unit that determines a degree of curvature; and a sealing property determination processing unit that determines whether the packaging container has high sealing performance based on each degree of curvature.

  According to the present invention, in the packaging container inspection device, the first and second reversing parts for reversing the packaging container, the expanding part for expanding the predetermined panel of the packaging container in accordance with the reversing, and the first The degree of curvature of the packaging container panel in the upright state of the packaging container before being inverted by the first inversion portion, and the packaging container panel after the packaging container is returned from the rollover state to the upright state by the second inversion portion. A degree-of-curvature determination processing unit that determines a degree of curvature; and a sealing property determination processing unit that determines whether the packaging container has high sealing performance based on each degree of curvature.

  In this case, the degree of curvature of the panel is determined before the packaging container is inverted and after the packaging container is inverted, and it is determined whether the sealing property of the packaging container is high based on the degree of curvature. Therefore, it is possible to increase the accuracy of determining the sealing performance.

  Moreover, since it is not necessary to put a packaging container in a vacuum chamber when judging sealing performance, the occupation area of a packaging container test | inspection apparatus can be made small and cost can be reduced.

  And since it is not necessary to apply a pressure to a packaging container, a packaging container is not damaged. Furthermore, since it is not necessary to vaporize fluid food, operability can be increased.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In this case, a packaging container inspection apparatus for determining whether or not a packaging container made of a paper container has high sealing performance will be described.

  FIG. 1 is a first diagram showing a method for measuring the amount of deformation of a panel according to an embodiment of the present invention, FIG. 2 is a conceptual diagram of a packaging container inspection apparatus according to an embodiment of the present invention, and FIG. FIG. 4 is a control block diagram of the packaging container inspection device according to the embodiment of the present invention.

  In the figure, reference numeral 10 denotes a packaging container made of a paper container. The packaging container 10 includes a main body of the packaging container 10, that is, a container main body 11 and a pull tab 12 as an opening member. The packaging container 10 is formed in a web shape, and is formed by folding a packaging material in which a pull tab 12 is fused in advance at a predetermined location by a predetermined method and sealing the predetermined location. The packaging material includes, for example, an outer layer, a paper base, an adhesive layer, a barrier layer, an adhesive layer, and an inner layer, which are sequentially laminated from the outer side to the inner side when the packaging container 10 is formed. In general, the outer layer, the adhesive layer, and the inner layer are formed of a resin such as low-density polyethylene and an ethylene copolymer, but the outer layer and the inner layer are preferably formed of polyethylene. The barrier layer is formed of aluminum foil or the like, and predetermined printing is performed on the outer surface of the outer layer or the outer surface of the paper base as necessary.

  The packaging container 10 includes a front surface 15 as a first panel, a rear surface 16 as a second panel, side surfaces 17 and 18 as third and fourth panels, a top surface 19 as a fifth panel, and a first panel 19. 6 is provided with a bottom surface 20 as a panel. The top surface 19 includes a vertical seal portion S1 and a horizontal seal portion S2, and a flap portion fp formed by protruding from both edges is bent toward the side surfaces 17 and 18, and is fused to the side surfaces 17 and 18. Be made. Further, a flap portion (not shown) formed to protrude from the lower ends of the side surfaces 17 and 18 is bent toward the bottom surface 20 and fused to the bottom surface 20.

  The packaging container 10 is formed by processing a web-like packaging material in a filling machine (not shown). That is, in the filling machine, the packaging material is set on a feeding machine in a reel state, fed out by the feeding machine, and conveyed by a feeding device.

  Subsequently, the packaging material has a strip tape attached to one edge and is conveyed in the vertical direction, and a punch hole is formed while being conveyed, so that the punch hole is covered. The inner tape and the pull tab 12 that are not to be attached are attached. Next, the packaging material is guided by forming rings disposed at a plurality of locations in the conveying direction, deformed into a tube shape, and sealed in the longitudinal direction by a vertical sealing device to form a packaging material tube. Become. At this time, the outer surface of one edge of the packaging material and the inner surface of the other edge are overlapped to form the vertical seal portion S1.

  Subsequently, the fluid food as the contents is supplied from above through the filling tube and filled in the packaging tube. The fluid food includes, for example, liquid colloidal and sol substances such as liquid seasonings in addition to liquid foods such as tea, juice, soup, and alcohols. Moreover, if it has fluidity | liquidity as a whole, the substance containing components, such as solid and gel which do not have fluidity | liquidity, is also contained.

  Next, the packaging material tube is sandwiched from both sides by a lateral sealing device and sealed laterally at a predetermined interval, and at this time, a lateral sealing portion S2 is formed.

  Subsequently, the packaging material tube is cut at the lateral seal portion S2 to form a prototype of the packaging container 10 having a pillow shape, that is, a prototype container. Then, the prototype container is molded by a predetermined molding device (not shown), the flap portion fp is bent from the top surface 19 side toward the side surfaces 17 and 18 and fused, and the flap portion not shown is the side surface 17. The packaging container 10 is formed by being bent from the 18 side toward the bottom surface 20 side and fused.

  By the way, in the packaging container 10 having the above-described configuration, the packaging material is sealed in the vertical direction and the horizontal direction. For this reason, the packaging material is sandwiched from both sides with a predetermined clamping pressure, and heat is applied. Is added, the resin on the surface of the packaging material is melted, and the packaging materials are fused together. However, for example, if the clamping pressure is too high, the molten resin escapes from the seal portion due to the clamping pressure, and the amount of resin remaining in the seal portion is insufficient, or the packaging materials are sufficiently fused together due to insufficient heating. Failure to do so may result in poor sealing. As the sealing failure occurs, the fluid food in the packaging container 10 leaks or air enters the packaging container 10 and the quality of the fluid food deteriorates.

  Moreover, in the packaging container 10 of the said structure, the spout which is not shown in figure which becomes a drinking mouth is formed in the top surface 19, and this spout is closed by the pull tab 12. FIG. For this purpose, in the filling machine, after forming a spout by punching a web-shaped packaging material, the cross-section of the packaging material is protected from the inner peripheral surface side when the packaging container 10 is formed. The inner tape is applied, the pull tab tape is applied from the outer peripheral surface side, and the inner tape and the pull tab tape are fused together with the packaging material.

  In this case, the inner tape and the pull tab tape are both supplied to the heat seal portion in a web-like shape, and are cut to a certain size and heat sealed. At this time, if at least one of the inner tape and the pull tab tape meanders, not only a sealing failure occurs, but also air may be entrained to burst and a pinhole may be generated.

  Therefore, in the present embodiment, a packaging container inspection device 22 is provided, and the packaging container inspection device 22 performs an inspection to determine whether the sealing property of the packaging container 10 is high.

  The packaging container inspection device 22 is arranged along a conveyor 23 as a conveying device for conveying the packaging container 10, and is a panel to be inspected, that is, a panel to be inspected, in the present embodiment, the front surface 15. The degree of curvature is determined twice.

  Therefore, the packaging container inspection device 22 includes a first determination unit 24 for determining the degree of curvature of the front surface 15 in order from the upstream side to the downstream side along the traveling direction (arrow direction) of the conveyor 23, the packaging. A first reversing unit 25 for reversing the container 10, a transport unit 26 for transporting the packaging container 10 while being placed in a rollover state, and a second reversing unit for reversing (forward-rotating) the packaging container 10 in the reverse direction 27. A second determination unit 28 for determining the degree of curvature of the front surface 15 is provided again.

  By the way, in the present embodiment, in the filling machine, the filling is performed by the underfilling method, the amount that is actually filled with respect to the volume of the packaging container 10, that is, the actual filling amount is reduced, and the packaging container The air in 10 is sucked so that no gap is formed. That is, a negative pressure is applied in the packaging container 10.

  Therefore, each front surface 15, rear surface 16, side surfaces 17, 18, top surface 19 and bottom surface 20 when the packaging container 10 is completed are curved to form a concave surface as shown in FIG. 3.

  Therefore, the first determination unit 24 is arranged to face the front surface 15 of the packaging container 10 placed upright on the conveyor 23, and determines the degree of curvature of the front surface 15. For this purpose, the first determination unit 24 is opposed to the front surface 15, and in the present embodiment, a plurality of, in the present embodiment, three optical fiber sensors 31 to 33 as distance detection elements disposed adjacent to each other. And a determination control unit 34 for determining the degree of curvature of the front surface 15. Each of the optical fiber sensors 31 to 33 includes a light emitting element and a light receiving element, and irradiates each of the detected points p1 to p3 on the front surface 15 with light generated by the light emitting element, and reflects the reflected light at that time by the light receiving element. The distances L1 to L3 from the optical fiber sensors 31 to 33 to the detected points p1 to p3 are detected according to the amount of light received by the light receiving element, the wavelength, and the like, and the distances L1 to L3 are determined by the determination control unit 29. Send to.

  A curvature degree determination processing unit (not shown) of the determination control unit 29 performs a curvature degree determination process, calculates a curvature representing the degree of curvature of the front surface 15 based on the distances L1 to L3, and curves the curvature. The degree is determined as ε1. Subsequently, the determination control unit 29 sends the degree of curvature ε1 to the control unit 36.

  By the way, each of the front surface 15, the rear surface 16, the side surfaces 17, 18, the top surface 19 and the bottom surface 20 is curved and forms a concave surface as described above, but the packaging material constituting the packaging container 10 is Since it has an elastic force to return to a flat state, the filled fluid food is gravity, and the front surface 15, the rear surface 16, and the side surfaces 17, 18 are spread outward, and the packaging container 10 It acts so that a bulging state is formed.

  Therefore, if the sealing property is low in the upper part of the packaging container 10, air in the atmosphere is easily introduced into the packaging container 10, so that a bulging state is formed in the packaging container 10. If the sealability is low in the lower part, the bulging state is not formed because the flowable food prevents the introduction of air.

  Therefore, in the present embodiment, the packaging container 10 is inverted to encourage the introduction of air.

  Next, the packaging container 10 is sent to the first reversing unit 25 in an upright state, reversed by the first reversing unit 25, placed in a rollover state on the conveyor 23, and the front surface 15 is directed upward.

  In this case, the first and second reversing parts 25 and 27 and the conveying part 26 are formed by round belts 34 and 35 comprising first and second belt devices arranged to face each other. The round belts 34 and 35 extend along the conveyance path of the packaging container 10 and are run with the packaging container 10 sandwiched therebetween.

  The round belts 34 and 35 are made to stand upright at a portion upstream from the first reversing portion 25 in the transport direction of the packaging container 10, and the first reversing portion 25 is counteracted in FIG. 2 by a guide (not shown). It is twisted 90 degrees in the clockwise direction, is turned over, is caused to run on the transport unit 26 while being turned over, and the second reversing unit 27 is rotated 90 in the clockwise direction in FIG. 2 by a guide (not shown). Twisted upright and upright, and upright at a portion downstream of the second reversing portion 27 in the transport direction of the packaging container 10. Accordingly, the packaging container 10 is placed in an upright state at a portion upstream from the first reversing part 25 in the conveying direction of the packaging container 10, and the first reversing part 25 changes from the upright state to the rollover state. In the transport unit 26, the rollover state is set, and in the second reversing unit 27, the rollover state is changed to the upright state, and the downstream portion in the transport direction of the packaging container 10 is upright in the downstream portion. Put in state.

  The round belts 34 and 35 have a suction belt structure, and are provided with a suction port (not shown) at a location where the packaging container 10 is sandwiched, and are connected to a negative pressure generation source via the suction port. Therefore, while sandwiching and transporting the packaging container 10, the front surface 15 and the rear surface 16 are sucked and spread outward.

  As a result, when the sealing property of the packaging container 10 is low, air can be reliably introduced into the packaging container 10, so that a bulging state can be formed. In the present embodiment, the round belts 34 and 35 function as an expanded portion that widens the front surface 15 and the rear surface 16 outward.

  Subsequently, the second determination unit 28 is disposed so as to face the front surface 15 of the packaging container 10 placed upright on the conveyor 23, and determines the curvature of the front surface 15 again. Therefore, as in the first determination unit 24, the second determination unit 28 faces the front surface 15, and a plurality of, in the present embodiment, three adjacent distances are disposed adjacent to each other in the horizontal direction. Optical fiber sensors 41 to 43 as detection elements and a determination control unit 44 for determining the degree of curvature of the front surface 15 are provided. And each said optical fiber sensor 41-43 is provided with the light emitting element and the light receiving element, irradiates each detected point p1-p3 of the front surface 15 with the light generated by the light emitting element, and the reflected light at that time is made by the light receiving element Each distance L11 to L13 from each of the optical fiber sensors 41 to 43 to the detected points p1 to p3 is detected according to the amount of light received by the light receiving element, the wavelength, and the like, and each of the distances L11 to L13 is determined by the determination control unit 44. Send to.

  A curvature degree determination processing unit (not shown) of the determination control unit 44 performs a curvature degree determination process, calculates a curvature indicating the degree of curvature of the front surface 15 based on the distances L11 to L13, and curves the curvature. The degree is determined as ε2. Subsequently, the determination control unit 44 sends the degree of curvature ε <b> 2 to the control unit 36.

And the sealing property determination processing means (not shown) of the control unit 36 performs the sealing property determination processing, reads the curvatures ε1, ε2, and determines whether the sealing property of the packaging container 10 is high based on the curvatures ε1, ε2. Judging. That is, the curvatures ε1, ε2 are almost equal,
ε1-α ≦ ε2 ≦ ε1 + α
α: When the value is a preset minute value, it can be determined that air is not introduced into the packaging container 10, and the sealing property of the packaging container 10 is determined to be high. On the other hand, when the curvature ε2 is smaller than the curvature ε1, that is,
ε2 <ε1-α
If it is, it can be determined that air has been introduced into the packaging container 10, and it is determined that the sealing property of the packaging container 10 is low.

  Thus, in the present embodiment, whether the sealing performance is high due to the difference between the curvature ε1 before introducing air into the packaging container 10 and the curvature ε2 after introducing air into the packaging container 10. Therefore, it is possible to increase the accuracy of determining the sealing performance.

  Moreover, since it is not necessary to put the packaging container 10 in a vacuum chamber when judging sealing performance, the occupation area of the packaging container inspection apparatus 22 can be reduced, and cost can be reduced. Since air is introduced into the packaging container 10 while inverting the packaging container 10, even when a predetermined gap is not formed in the packaging container 10, the accuracy of determining the sealing performance is increased. can do.

  In addition, since it is not necessary to generate reverberation and to measure the capacitance in order to determine the sealing property, the sealing property can be determined with high accuracy. And since it is not necessary to apply a pressure to the packaging container 10, the packaging container 10 is not damaged. Furthermore, since it is not necessary to vaporize fluid food, operability can be increased.

  In the present embodiment, the round belts 34 and 35 are used as the first and second reversing portions 25 and 27 in order to reverse the packaging container 10. Can be configured. For example, the packaging container 10 can be reversed by attaching it to a rotating body such as a wheel or drum and rotating the rotating body.

  Moreover, in this Embodiment, although the round belts 34 and 35 are used as an expansion part, an expansion part can be comprised by another expansion apparatus. In this case, for example, a suction cup for sucking the front surface 15, the rear surface 16, the side surfaces 17 and 18, the top surface 19, and the bottom surface 20 is provided, and the suction cup can be moved forward and backward by a support mechanism or the like.

  Further, in the present embodiment, the distances L1 to L3 and L11 to L13 to the detected points p1 to p3 are detected by the optical fiber sensors 31 to 33 and 41 to 43. Can be detected.

  Further, the curvatures ε1 and ε2 of the front surface 15 can be determined by image processing without detecting the distances L1 to L3 and L11 to L13 to the detected points p1 to p3.

  FIG. 5 is a diagram showing a determination unit in the embodiment of the present invention. In addition, about the thing which has the same structure as FIG. 1, the same code | symbol is provided and the effect of the same embodiment is used about the effect of the invention by having the same structure.

  In the figure, reference numeral 24 denotes a first determination unit disposed at the most upstream end of the conveyor 23 (FIG. 2), and the first determination unit 24 includes an irradiation device 51 and an imaging device 52. The irradiation device 51 generates slit light, irradiates the front surface 15 with the slit light, and forms a line m1 extending horizontally as an inspection image on the surface of the front surface 15. The imaging device 52 is disposed above the irradiation device 51, images the line m1, and sends the image data of the captured line m1 to the determination control unit 29 (FIG. 4).

  Then, the curvature determination processing means of the determination control unit 29 calculates a curvature representing the degree of curvature of the front surface 15 based on the image data, and determines the curvature as the curvature ε1. Subsequently, the determination control unit 29 sends the degree of curvature ε1 to the control unit 36.

  On the other hand, a second determination unit 28 is disposed at the most downstream end of the conveyor 23. Similarly to the first determination unit 24, the second determination unit 28 includes an irradiation device 51 and an imaging device 52. The irradiation device 51 generates slit light and irradiates the front surface 15 with the slit light. Then, a line m1 extending horizontally as an inspection image is formed on the front surface 15. The imaging device 52 is disposed above the irradiation device 51, images the line m 1, and sends the image data of the captured line m 1 to the determination control unit 44.

  Then, the curvature determination processing unit of the determination control unit 44 calculates a curvature representing the degree of curvature of the front surface 15 based on the image data, and determines the curvature as the curvature ε2. Subsequently, the determination control unit 44 sends the degree of curvature ε <b> 2 to the control unit 36.

  And the said sealing | tightness determination processing means of this control part 36 reads the said curvature ε1, ε2, and judges whether the sealing property of the packaging container 10 is high based on the curvature ε1, ε2.

  As the irradiation device 51, a semiconductor laser line generator was used, and an experiment was performed at a position 200 mm away from the front surface 15. In this case, red light having a wavelength of 635 [nm] was generated at a maximum output of 1 [mW], and the front surface 15 was irradiated with a line thickness of about 2 [mm].

  Then, a CCD camera was used as the imaging device 52, the line m1 formed on the front surface 15 was photographed, and the curvature of the line m1 was calculated by a curvature measurement image system (for example, Keyenceno CV-3000 series). . In this case, since the contrast between the laser beam and the background can be increased, noise due to the surface design printed on the surface container of the packaging container 10 can be reduced.

  Therefore, it is possible to increase the accuracy of the sealing performance determination.

  Further, instead of the line m1, a fringe pattern is generated by the irradiation device 51, the front surface 15 is irradiated, and the moiré caused by the interference is measured, whereby the curvatures ε1, ε2 of the front surface 15 can be determined.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

It is a 1st figure which shows the method of measuring the deformation amount of the panel in embodiment of this invention. It is a conceptual diagram of the packaging container test | inspection apparatus in embodiment of this invention. It is a 2nd figure which shows the method of measuring the deformation amount of the panel in embodiment of this invention. It is a control block diagram of the packaging container inspection apparatus in the embodiment of the present invention. It is a figure which shows the determination part in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Packaging container 15 Front surface 22 Packaging container inspection apparatus 25, 27 1st, 2nd inversion part 29, 44 Judgment control part 34, 35 Round belt 36 Control part m1 Line

Claims (4)

(A) first and second reversing parts for reversing the packaging container;
(B) an expansion part that expands a predetermined panel of the packaging container in accordance with the inversion;
(C) The degree of curvature of the packaging container panel in the upright state of the packaging container before being inverted by the first inversion portion , and after the packaging container is returned from the rollover state to the upright state by the second inversion portion . Bend degree determination processing means for determining the bend degree of the panel of the packaging container ;
(D) A packaging container inspection apparatus comprising: a sealing performance determination processing unit configured to determine whether or not the packaging container has a high sealing performance based on each degree of curvature. The packaging container inspection device according to claim 1, wherein the bending degree determination processing unit determines the respective bending degrees based on reflected light when the panel is irradiated with light. The packaging container inspection device according to claim 1, wherein the bending degree determination processing unit determines the respective bending degrees based on an inspection image when light is applied to the panel. (A) The packaging container is reversed by the first reversing unit and placed in a rollover state .
(B) In a rollover state, a predetermined panel of the packaging container is expanded,
(C) The packaging container is returned from the rollover state to the upright state by the second reversing unit,
(D) The degree of curvature of the packaging container panel in the upright state of the packaging container before being inverted by the first inversion portion , and after the packaging container is returned from the rollover state to the upright state by the second inversion portion . Determine the curvature of the packaging container panel,
(E) A method for inspecting a packaging container, wherein it is determined whether or not the sealing property of the packaging container is high based on each degree of curvature.

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