Packaging equipment

Abstract

To provide a packaging device capable of shortening a time required for packaging.SOLUTION: A packaging device comprises: a film supply stop part for stopping the supply of two continuous films F1, F2 whose front ends are welded to each other and which are supplied so as to move to a downstream side together with an object 100 to be packaged inserted therebetween; a conveyance part 22 for stretching the two continuous films F1, F2 by moving the object 100 to be packaged further to the downstream side in a state where the supply of the two continuous films F1, F2 is stopped; and a heater 20 for thermally welding the two continuous films F1, F2 to each other in a state where a rear end of the object 100 to be packaged conveyed by the conveyance part 22 has passed through the heater 20. The film supply stop part stops the supply of the two continuous films before the rear end of the object to be packaged passes through the heater.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a packaging machine. [Background technology]

[0002] Patent Document 1 discloses a packaging device that places an item on a backing sheet and wraps a film around the item together with the backing sheet to package the item. This packaging device is said to be able to securely package the item together with the backing sheet so as to prevent damage to the item during transportation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-172287 Summary of the Invention [Problem to be solved by the invention]

[0004] The packaging device in Patent Document 1 stretch-wraps the goods by reversing the conveyor that carries out the goods to move them upstream and by stretching the film by rewinding it, so packaging takes time.

[0005] The present invention has been made in light of these circumstances, and one exemplary purpose of an embodiment of the present invention is to provide a wrapping device that can reduce the time required for stretch wrapping. [Means for solving the problem]

[0006] In order to solve the above problems, a packaging device according to one aspect of the present invention is a packaging device including a conveying section for conveying the packaged items, and a conveying section for conveying the packaged items, the ends of which are welded together, and the packaged items inserted between the conveying section and the conveying section are moved downstream. Pressed by the packaged itemThe device is equipped with a film supply adjustment unit that slows down the pull-out speed, which is the speed at which two continuous films are pulled out from two film rolls, respectively, compared to the speed at which the packaged items move downstream, and a heater that heat-seals the two continuous films together when the rear ends of the packaged items conveyed by the conveying unit have passed the heater. The film supply adjustment unit slows down the pull-out speed compared to the moving speed of the packaged items before the rear ends of the packaged items pass the heater. This stretches the two continuous films. .

[0007] Any combination of the above components, or mutual substitution of the components or expressions of the present invention between methods, devices, systems, etc., are also valid aspects of the present invention. [Effects of the Invention]

[0008] According to the present invention, the time required for packaging can be reduced. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a vertical cross-sectional view of a packaging device according to an embodiment. [Figure 2] 2 is a perspective view showing an article packaged in a film by the packaging device of FIG. 1. FIG. [Figure 3] 3(a) to 3(d) are diagrams explaining the operation of the packaging device in chronological order. [Figure 4] 4(a) to 4(d) are diagrams explaining the operation of the packaging device in chronological order. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be described below based on preferred embodiments with reference to the drawings. The embodiments are illustrative and do not limit the invention, and all features and combinations described in the embodiments are not necessarily essential to the invention. The same or equivalent components, parts, and processes shown in each drawing are designated by the same reference numerals, and redundant descriptions will be omitted where appropriate.

[0011] Fig. 1 is a longitudinal sectional view of a packaging device 1 according to an embodiment. Fig. 2 is a perspective view showing an item 100 packaged by the packaging device 1. The packaging device 1 is a stretch packaging device that packages the item 100 using the stretchability of a film F.

[0012] The packaged item 100 includes a plate-shaped backing sheet 102 and an item 104 placed on the backing sheet 102. The backing sheet 102 is, for example, cardboard. Although not particularly limited, in this example, the backing sheet 102 has a rectangular shape when viewed in a direction perpendicular to the placement surface 102a on which the item 104 is placed.

[0013] The item 104 of the packaged item 100 is, for example, a product purchased from an e-commerce site (e.g., an online store's mail-order site), and the packaged item 100 is stretch-wrapped with film F, packed in, for example, a cardboard box, and delivered to the purchaser.

[0014] The packaging device 1 is a device that packages an object 100 to be packaged with a film F. In other words, the packaging device 1 is a device that packages an object 104 together with a mount 102 with the film F. The packaging device 1 can also be regarded as a device that fixes the object 104 to the mount 102 with the film F.

[0015] The packaging device 1 has an insertion opening 2 located at the right end in Fig. 1 and a discharge opening 4 located at the left end in Fig. 1. Hereinafter, the direction from the insertion opening 2 toward the discharge opening 4 will be referred to as the conveying direction D, with the insertion opening 2 side being referred to as the upstream side and the discharge opening 4 side being referred to as the downstream side in the conveying direction D. The packaged item 100 is inserted from the insertion opening 2 so that two opposing sides of the backing sheet 102 are parallel or approximately parallel to the conveying direction D. The packaging device 1 packages the packaged item 100 inserted from the insertion opening 2 with film F before it is discharged from the discharge opening 4.

[0016] The packaging device 1 includes a first roll support shaft 10, a second roll support shaft 12, a receiving section 14, a first presser foot 16, a second presser foot 18, a heater 20, a support member 34, a conveying section 22, a first sensor 24, a second sensor 26, a third sensor 28, and a control section 30.

[0017] The first roll support shaft 10 is inserted into the core (e.g., a cardboard tube) of the film roll R1 and rotatably supports the film roll R1. The first roll support shaft 10 is particularly provided so that the film roll R1 is located above the insertion opening 2.

[0018] The second roll support shaft 12 is inserted through the core of the film roll R2 and rotatably supports the film roll R2. The second roll support shaft 12 is particularly provided so that the film roll R2 is located below the insertion opening 2.

[0019] Film rolls R1 and R2 are formed by winding a long continuous film around a core. Continuous film F1 is pulled out from film roll R1 and hung on guide 32, with its tip positioned above receiving section 14 of heater 20. Continuous film F2 is pulled out from film roll R2 and hung on guide 33, with its tip positioned above receiving section 14. Continuous films F1 and F2 are narrower than backing paper 102 of packaged item 100.

[0020] The leading ends of the continuous films F1 and F2 are welded together (i.e., connected) in the previous packaging operation. Furthermore, the film rolls R1 and R2 are supported so as to be freely rotatable, as described above. Therefore, when the packaged item 100 is inserted and moves downstream, the leading ends of the continuous films F1 and F2 are pushed by the packaged item 100 and move downstream together with the packaged item 100, and the continuous films F1 and F2 are pulled out from the film rolls R1 and R2 by the distance they have moved.

[0021] The continuous films F1 and F2 are transparent, although not particularly limited thereto. The continuous films F1 and F2 are stretch films that are stretchable at least in the machine direction D. Having stretchability in the machine direction D means that the films stretch without breaking when a tensile force is applied in the machine direction D, and shrink when the tensile force is removed. It does not matter whether the films return to their original state, i.e., to their original length, when the tensile force is removed.

[0022] The first presser foot 16, heater 20, and second presser foot 18 are arranged in this order from the upstream side. A receiving portion 14 is provided below the first presser foot 16, heater 20, and second presser foot 18. The receiving portion 14 has a flat upper surface 14a. The first presser foot 16, heater 20, second presser foot 18, and receiving portion 14 are all members that are elongated in the width direction.

[0023] The first presser foot 16 can be raised and lowered by a drive mechanism (not shown). In the illustrated example, the lower surface 16a of the first presser foot 16 is flat, but is not limited to this and may be, for example, a curved surface.

[0024] Both the heater 20 and the second presser foot 18 are supported by a support member 34. The support member 34 can be raised and lowered by a drive mechanism (not shown). Therefore, the heater 20 and the second presser foot 18 can be raised and lowered as the support member 34 is raised and lowered. In this case, only one drive mechanism is required to raise and lower the heater 20 and the second presser foot 18, which reduces costs. However, the heater 20 and the second presser foot 18 may be raised and lowered by separate drive mechanisms. In this case, the support member 34 is not required.

[0025] The second presser foot 18 is supported by a support member 34 so as to be movable up and down relative to the heater 20. The second presser foot 18 is biased downward, i.e., toward the upper surface 14a of the receiving part 14, by a spring 36 whose one end (upper end) 34a is fixed to the support member 34 and whose other end (lower end) 34b is fixed to the upper end of the second presser foot 18.

[0026] In the illustrated example, the lower surface 18a of the second presser foot 18 is a flat surface, but is not limited to this and may be, for example, a curved surface.

[0027] The heater 20 is made of, for example, aluminum or an aluminum alloy, which has good thermal conductivity and is lightweight. The lower end of the heater 20 is formed at an acute angle. A rubber heater (not shown) is baked and fixed to the heater 20, and the heater 20 can be heated by passing electricity through this rubber heater.

[0028] As shown in the figure, the distance L1 in the conveyance direction from the first presser foot 16 to the heater 20 is preferably configured to be longer than the distance L2 in the conveyance direction from the heater 20 to the second presser foot 18. The distance L1 is, for example, the distance between the center of the lower surface 16a of the first presser foot 16 in the conveyance direction D and the tip of the heater 20. The distance L2 is, for example, the distance between the tip of the heater 20 and the center of the lower surface 18a of the second presser foot 18 in the conveyance direction D.

[0029] A conveying section 22 is provided downstream of the second presser foot 18 to convey the packaged items 100 downstream. The conveying section 22 conveys the packaged items 100 by clamping both ends of the backing sheet 102 in the width direction, which are outside the continuous films F1, F2 and are not covered by the continuous films F1, F2. In this example, the conveying section 22 includes two upstream conveying roller pairs 38 (only one of which is visible on the front side of the paper in FIG. 1 ) spaced apart in the width direction by a distance wider than the width of the continuous films F1, F2, and two downstream conveying roller pairs 40 (only one of which is visible on the front side of the paper in FIG. 1 ) spaced apart in the width direction by a distance wider than the width of the continuous films F1, F2. Each of the conveying roller pairs 38, 40 includes an upper roller that contacts the backing sheet 102 from above and a lower roller that contacts the backing sheet 102 from below. The pair of conveying rollers 38, 40 sandwich the backing sheet 102 between the upper and lower rollers and convey the backing sheet 102 and thus the packaged item 100 downstream.

[0030] The first sensor 24 is positioned upstream of the first pressure member 16. The second sensor 26 is positioned downstream of the second pressure member 18 and upstream of the conveying section 22. The third sensor 28 is positioned downstream of the conveying section 22. The sensors 24, 26, and 28 detect the leading or trailing end of the packaged item 100 at their respective positions.

[0031] The control unit 30 comprehensively controls the packaging device 1. Specifically, the control unit 30 controls the operation of actuators such as motors that drive each mechanism and the overheating of the heater 20 that welds the continuous films F1 and F2. For example, the control unit 30 starts and stops the conveyance of the packaged items 100 by the conveying unit 22 based on the detection results of the packaged items 100 by the sensors 24, 26, and 28.

[0032] The above is the basic configuration of the packaging device 1. Next, the operation thereof will be described.

[0033] 3(a) to 3(d) and 4(a) to 3(d) are diagrams illustrating the operation of the packaging device 1 in chronological order. In FIG. 3(a), the first presser foot 16, the heater 20, and the second presser foot 18 are in a standby position spaced above the upper surface 14a of the receiving section 14. In this state, the packaged item 100 is inserted into the packaging device 1. The standby position is a position (height) at which the first presser foot 16, the heater 20, and the second presser foot 18 do not come into contact with the packaged item 100 being inserted. In the standby position, the second presser foot 18 is positioned closer to the upper surface 14a of the receiving section 14 than the heater 20. The conveying roller pairs 38 and 40 of the conveying section 22 are stopped.

[0034] In Figure 3(b), the packaged item 100 has been inserted up to the conveying section 22. The pair of conveying rollers 38, 40 of the conveying section 22 start rotating when the first sensor 24 detects the leading edge of the packaged item 100, and they clamp both ends of the backing paper 102 to convey the packaged item 100 downstream.

[0035] In Figure 3(c), the rear end of the packaged item 100 has passed the first presser foot 16. The first presser foot 16 has descended from the standby position to the gripping position. The conveying section 22 conveys the packaged item 100 further downstream.

[0036] The gripping position of the first presser foot 16 is a position where the first presser foot 16 is pressed against the upper surface 14a of the receiving portion 14. When the first presser foot 16 is in the gripping position, the continuous films F1, F2 are gripped by the first presser foot 16 and the receiving portion 14. In other words, the first presser foot 16 and the portion of the receiving portion 14 facing the first presser foot 16 constitute a gripping portion that grips the continuous films F1, F2. When the continuous films F1, F2 are gripped, the supply of the continuous films F1, F2 from the film rolls R1, R2 is stopped. In other words, the continuous films F1, F2 are no longer pulled out from the film rolls R1, R2. In other words, the speed at which the continuous films F1, F2 are pulled out from the film rolls R1, R2 (hereinafter referred to as the "pulling speed") becomes zero. In other words, the first presser foot 16 and the portion of the receiving portion 14 facing the first presser foot 16 constitute a gripping portion, and ultimately a film supply adjusting portion that stops the supply of the continuous films F1, F2 (sets the unwinding speed to zero). The unwinding speed is the speed of the portions of the continuous films F1, F2 immediately after being unwound from the film rolls R1, R2. The unwinding speed can also be considered to be equal to the peripheral speed of the outer circumferential surfaces of the film rolls R1, R2 that rotate as the continuous films F1, F2 are unwound.

[0037] In detail, the first presser 16 reaches the gripping position after the rear end of the packaged item 100 passes through the first presser 16 but before it passes through the heater 20, and grips the continuous films F1 and F2 together with the receiving portion 14.

[0038] For example, when first sensor 24 detects the rear end of item 100, conveyance by conveying unit 22 may be stopped at a timing when the rear end of item 100 passes first presser foot 16 and before it passes heater 20, and then first presser foot 16 may be lowered to the gripping position, and then conveyance by conveying unit 22 may be resumed. Alternatively, without stopping conveyance by conveying unit 22, when first sensor 24 detects the rear end of item 100, first presser foot 16 may be lowered so that first presser foot 16 reaches the gripping position at a timing when the rear end of item 100 passes first presser foot 16 and before it passes heater 20.

[0039] When the supply of the continuous films F1, F2 is stopped, the conveying section 22 conveys the packaged item 100 further downstream, causing the continuous films F1, F2 to stretch downstream of the first presser foot 16.

[0040] In Figure 3(d), the rear end of the packaged item 100 has passed the second presser foot 18. The support member 34 is lowered from the standby position (Figure 3(a)), and the second presser foot 18 is accordingly lowered from the standby position to the gripping position. The conveyance of the packaged item 100 by the conveying section 22 is stopped.

[0041] The gripping position of the second presser foot 18 is a position where the second presser foot 18 is pressed against the upper surface 14a of the receiving portion 14. When the second presser foot 18 is in the gripping position, the continuous films F1, F2 are gripped by the second presser foot 18 and the upper surface 14a of the receiving portion 14. In other words, the second presser foot 18 and the portion of the receiving portion 14 facing the second presser foot 18 constitute a gripping portion that grips the continuous films F1, F2.

[0042] More specifically, the second presser 18 reaches the gripping position after the rear end of the packaged item 100 has passed the second presser 18, and together with the receiving portion 14 grips the continuous films F1, F2.

[0043] For example, when the second sensor 26 detects the rear end of the packaged item 100, the conveying unit 22 stops conveying, and then the second presser foot 18 is lowered to the gripping position.

[0044] In FIG. 4(a), the first presser foot 16 is raised from the gripping position to the standby position. Note that the first presser foot 16 does not have to be raised to the standby position as long as it can be separated from the upper surface 14a of the receiving portion 14. In FIG. 4(b), the first presser foot 16 is lowered again from the standby position to the gripping position. In other words, the continuous films F1 and F2 are temporarily released from being gripped by the first presser foot 16 and the receiving portion 14. This reduces the tension of the continuous films F1 and F2 between the first presser foot 16 and the second presser foot 18. This prevents poor welding in the subsequent heat welding.

[0045] The continuous films F1 and F2 are pressed against the receiving portions 14 by a first presser 16 on the upstream side of the heater 20 and by a second presser 18 on the downstream side of the heater 20. Therefore, the continuous films F1 and F2 are in close contact with each other at the positions to be welded by the heater 20, i.e., the positions below the heater 20.

[0046] In FIG. 4(b), the first presser foot 16 may be returned to a position slightly above the upper surface 14a of the receiving portion 14, rather than to the gripping position. Even if the first presser foot 16 does not press the continuous films F1 and F2 against the receiving portion 14, being in a position slightly above the upper surface 14a of the receiving portion 14 can prevent the continuous films F1 and F2 from separating too far. In other words, the films F1 and F2 are relatively closely attached. In this case, the first presser foot 16 only needs to be returned to the gripping position before FIG. 4(d) described below, specifically, before conveyance by the conveyance unit 22 is resumed.

[0047] In FIG. 4(c), the support member 34 further descends. Because the second presser foot 18 has already reached the gripping position as shown in FIG. 3(d), the second presser foot 18 does not descend as the support member 34 further descends. The material of the receiving portion 14 is not particularly limited, but it may be a material that does not substantially deform or dent when pressed downward by at least the presser foot 16, 18. Meanwhile, the heater 20 descends as the support member 34 descends and reaches the welding position. The welding position is where the tip of the heater 20 presses against the upper surface 14a of the receiving portion 14. In other words, the first presser foot 16 and the heater 20 move relative to each other. The heater 20 contacts the continuous films F1 and F2, which are in close contact with each other, and thermally welds them together. As a result, the continuous films F1 and F2 downstream of the second presser foot 18 are stretched, and are welded together.

[0048] In Figure 4(d), the support member 34 rises, and the heater 20 and second presser foot 18 rise from the welding position and the gripping position, respectively. In this state, conveyance by the conveying unit 22 resumes, and the continuous films F1 and F2 are cut at the welding position. Then, the film that has wrapped the packaged item 100 (i.e., the film cut from the continuous films F1 and F2) shrinks, and the packaged item 100 is securely stretch-wrapped.

[0049] The above is the operation of the packaging device 1. Next, in Fig. 3(c), reference will be made to the fact that the first presser foot 16 reaches the gripping position and grips the continuous films F1, F2 together with the receiving portion 14 before the rear end of the packaged item 100 passes through the heater 20. In Fig. 4(d), the packaging device 1 fixes the item 104 to the backing sheet 102 by the force of the film packaging the packaged item 100, i.e., the film separated from the continuous films F1, F2 downstream of the welding portion by the heater 20, still trying to shrink.

[0050] In contrast, if the first presser foot 16 reaches the gripping position after the rear end of the packaged item 100 has passed the heater 20, the continuous films F1 and F2 downstream of the heater 20 will already be long enough at that point (i.e., before stretching) to loosely wrap the packaged item 100. Naturally, even if the film is released and shrinks after stretching, it will not become shorter than its pre-stretched length. Therefore, in this case, the film wrapping the packaged item 100 will not be able to secure the item 104 to the backing sheet 102.

[0051] Therefore, it is necessary to make the first presser 16 reach the gripping position before the rear end of the packaged item 100 passes through the heater 20, and grip the continuous films F1, F2 together with the receiving portion 14.

[0052] However, even if the first presser foot 16 reaches the gripping position before the rear end of the packaged item 100 passes the heater 20, if the distance L5 (see FIG. 3(c)) from the rear end of the packaged item 100 to the heater 20 at that time is short, the packaged item 100 may still only be loosely wrapped. Specifically, even if the stretched film shrinks, it may not return to its original length. If the length of the part longer than the original length (hereinafter referred to as the "stretched part") is longer than L5, the packaged item 100 may only be loosely wrapped. Therefore, L5 must be longer than the length of the stretched part, and the longer L5 is, the tighter the packaging. To achieve the length of L5, a certain length is required for L1. On the other hand, the length of L2 does not affect this, and it is preferable that it be as short as possible to configure the device compactly.

[0053] Furthermore, as is clear from the fact that the packaged item 100 is packaged using the stretchability of the film, the distance L2 in the conveying direction from the heater 20 to the second presser foot 18, the distance L3 in the conveying direction from the leading edge of the packaged item 100 to the first presser foot 16 in Figure 3(d), and the distance L4 in the conveying direction from the trailing edge of the packaged item 100 to the second presser foot 18 in Figure 3(d) affect whether the packaged item 100 is securely packaged so that the position of the item does not shift relative to the backing sheet 102 when vibrations or impacts are applied to the packaged item 100. These distances L2, L3, and L4 may be determined to appropriate values ​​based on the stretchability of the continuous films F1 and F2, for example, through experiments.

[0054] The first presser foot 16, the second presser foot 18, and the heater 20 may each be movable separately in the conveying direction. In this case, the distances L2, L3, and L4 can be changed. For example, if the continuous films F1 and F2 are changed to films with different elasticity or if the length of the backing sheet 102 in the conveying direction is changed, the distances L2, L3, and L4 can be adjusted so that the packaged item 100 is securely packaged.

[0055] According to the present embodiment described above, the packaged item 100 can be stretch-packaged with a relatively simple and easy operation of conveying the packaged item 100 downstream while holding the continuous films F1 and F2, stretching the continuous films F1 and F2, and then welding them in that state, without having to move the packaged item 100 upstream (reverse running) or rewind the continuous films F1 and F2, thereby reducing the time required for packaging.

[0056] The present invention has been described above based on an embodiment. This embodiment is merely an example, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component and each treatment process, and that such modifications are also within the scope of the present invention. These modifications will be described below.

[0057] (Variation 1) In the embodiment, the first presser foot 16 and the portion of the receiving portion 14 facing the first presser foot 16 constitute the gripping portion and thus the film supply adjustment portion, but this is not limited to this. For example, the packaging device 1 may be equipped with a brake mechanism that applies a brake to prevent the film rolls R1, R2 from rotating and releases the brake to allow them to rotate. In this case, applying the brake to prevent the film rolls R1, R2 from rotating stops the supply of continuous films F1, F2 from the film rolls R1, R2. In other words, the brake mechanism constitutes the film supply adjustment portion.

[0058] (Variation 2) In the embodiment and the above-described modified example, the film supply adjustment unit stops the film supply, i.e., the film unwinding speed is set to zero. However, this is not limited to this. The film supply adjustment unit can simply reduce the unwinding speed without setting it to zero. Specifically, the unwinding speed can be slower than the speed at which the packaged items 100 move downstream. If the unwinding speed is slower than the speed at which the packaged items 100 move downstream, the two continuous films F1 and F2 will stretch, achieving the same effect as the embodiment. For example, if the first presser foot 16 and the portion of the receiving portion 14 facing the first presser foot 16 constitute the film supply adjustment unit, the unwinding speed can be slowed by weakening the force pressing the first presser foot 16 against the receiving portion 14. For example, if the brake mechanism described in modified example 1 constitutes the film supply adjustment unit, the unwinding speed can be slowed by the brake mechanism applying a weaker brake.

[0059] The present invention has been described using specific terms based on the embodiments, but the embodiments merely illustrate one aspect of the principles and applications of the present invention, and many modifications and changes in arrangement are permitted to the embodiments as long as they do not deviate from the concept of the present invention as defined in the claims. [Explanation of symbols]

[0060] 1 packaging device, 16 first pressure member, 18 second pressure member, 20 heater, 22 conveying section, F1, F2 continuous film.

Claims

1. A conveying unit that conveys the packaged items; a film supply adjusting unit that slows down the withdrawal speed at which two continuous films, the leading ends of which are welded together and which are pulled out from two film rolls as they are pushed by the packaged items inserted between them and move downstream, compared to the speed at which the packaged items move downstream; a heater that heat-seals two continuous films together when the rear end of the packaged item conveyed by the conveying section passes through the heater; Equipped with A packaging device in which the film supply adjustment unit stretches the two continuous films by slowing the pull-out speed below the movement speed of the packaged item before the rear end of the packaged item passes through the heater.

2. The packaging device described in claim 1, wherein the film supply adjustment unit is composed of a first gripping unit capable of gripping two continuous films upstream of the heater, and by the first gripping unit gripping the two continuous films, the pulling speed of the two continuous films is made slower than the moving speed of the packaged items.

3. the film supply adjustment unit includes a second gripping unit that is downstream of the heater and is capable of gripping two continuous films; The packaging device according to claim 2 , wherein the second gripping section grips the two continuous films after the first gripping section grips the two continuous films and before the heater heat-seals the two continuous films.

4. The packaging device according to claim 3 , wherein a distance from the first gripping unit to the heater in the conveyance direction is longer than a distance from the heater to the second gripping unit in the conveyance direction.

5. A packaging device as described in claim 3 or 4, wherein after the second gripping portion grips the two continuous films, the first gripping portion temporarily releases the two continuous films from gripping and then grips them again before the heater heats and seals them.

6. The two continuous films are narrower than the packaged items, 6. The packaging device according to claim 1, wherein the conveying section conveys the packaged article by clamping the packaged article at a position outside the two continuous films in the width direction.

7. 6. The packaging device according to claim 1, wherein the film supply adjusting unit sets the pull-out speed to zero, which is slower than the moving speed of the packaged items.

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