Filling and packaging machine and horizontal sealing device used therein

Abstract

[Problem] To provide a lateral sealing device for a filling / packaging machine with which sealing defects are prevented from occurring between an edge surface of a sealing tape and an inner surface of a tubular packaging material in a lateral seal section created by ultrasonic sealing. [Solution] A lateral sealing device for a filling / packaging machine includes an ultrasonic horn 17A and an anvil 17B that are provided so as to be able to open and close with a tubular packaging material T sandwiched therebetween, and that have formed therein seal surfaces 171, 172 that oppose each other and extend in a direction orthogonal to a length direction of the tubular packaging material T. In the seal surface 172 of the anvil 17B, formed are: a first groove 179a, which extends so as to be capable of intersecting one edge surface S1 of a sealing tape S when viewed from the front during lateral sealing; and a second groove 179b, which extends so as to be capable of intersecting the other edge surface S2 of the sealing tape when viewed from the front during lateral sealing.

Description

[Technical field]

[0001] The present invention relates to a filling and packaging machine that fills and packages contents such as liquid foods and beverages into containers made of a web-like packaging material mainly made of paper or the like, and to an ultrasonic sealing type horizontal sealing device used in the filling and packaging machine. [Background technology]

[0002] For example, the filling and packaging machine shown in Figure 4 is known for producing content-filled containers by filling and packaging contents such as liquid foods and beverages using a web-like packaging material formed by laminating sealant layers made of thermoplastic resin on both sides of a base layer made of paper or the like. The filling and packaging machine (10) includes a rewinder (11) that supports a web-like packaging material (M) wound into a roll, a rewinding device (12) that sequentially rewinds the web-like packaging material (M) from the rewinder (11), a tape application device (13) that applies a sealing tape (S) made of a thermoplastic resin to one edge of one side of the rewound web-like packaging material (M) so that a part of the width of the tape extends beyond the edge, a sterilization tank (14) that sterilizes the web-like packaging material (M) by immersing it in a sterilizing solution such as hydrogen peroxide solution, and a tubular packaging material (T) that is formed by overlapping both end edges of the web-like packaging material (M) by a predetermined width and vertically sealing the same. The apparatus is equipped with a vertical sealing device (15) which attaches an overhanging portion of a sealing tape (S) to the inner surface of a tubular packaging material (T) so as to cover (one end edge surface of the web-like packaging material); a content filling device (16) which fills a fluid content into the tubular packaging material (T) using a filling tube (16a) inserted from above into the tubular packaging material (T); a horizontal sealing device (17) which horizontally seals the content-filled tubular packaging material (T) at a length equivalent to one container and cuts it in the middle of the width of the horizontal seal portion to form a pillow-shaped content-filled container (C1) in an intermediate form; and a container completion device (18) which forms the container (C1) into a rectangular parallelepiped content-filled container (C2) in its completed form.

[0003] The tape application device (13) includes a tape reel (131) on which the sealing tape (S) is wound in a roll, a tape rewinding device (132) which sequentially rewinds the sealing tape (S) from the tape reel (131), a heater (133) which preheats one edge portion of one side of the web-like packaging material (M) to which the sealing tape (S) is applied, and a pair of pressure rollers (134) which press the sealing tape (S) against one edge portion of one side of the web-like packaging material (M) to seal it.

[0004] The vertical sealing device (15) includes a heater (151) that preheats both end edges of the web-like packaging material (M) and the sealing tape (S) during the intermediate process in which the web-like packaging material (M) is formed into a tube shape by a forming roll (not shown), and a pair of pressing rollers (152) that press and seal both end edges of the overlapped web-like packaging material (M) and the sealing tape (S).

[0005] Known types of transverse sealing devices (17) include heat sealing, high frequency sealing, ultrasonic sealing, and the like. For example, as disclosed in the following Patent Documents 1 and 2, an ultrasonic sealing type horizontal sealing device (17) is provided with an ultrasonic horn (17A) and an anvil (17B) that are arranged to be able to open and close while sandwiching a tubular packaging material (T). The ultrasonic horn (17A) and the anvil (17B) are formed with sealing surfaces that face each other and extend in a direction perpendicular to the length direction of the tubular packaging material (T). Although not shown in the figure, the ultrasonic horn (17A) and the anvil (17B) are provided with forming flaps that preform the tubular packaging material (T) into a predetermined container shape (e.g., a square cross section) by sandwiching it from both sides. During horizontal sealing, the tubular packaging material (T) is locally pinched and deformed at a specified height by the sealing surfaces of the ultrasonic horn (17A) and anvil (17B) with a specified pressure, and the two flattened packaging material (T) parts are pressed together, and the ultrasonic oscillator is operated in this state. Then, as shown in Figure 5, the inner surfaces of the two pressed packaging material (T) parts are fused together, and the sealing tape (S) is fused to the inner surface of the packaging material (T) part opposite the overlap part (T1). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 4282179 [Patent Document 2] Patent No. 4316053 Summary of the Invention [Problem to be solved by the invention]

[0007] Here, in the horizontal seal portion formed by the horizontal sealing device (17), both end edge surfaces (S1) and (S2) of the sealing tape (S) are usually fused to the inner surface of the packaging material (T) portion. However, depending on the type of sealing tape (S), for example, if a hard material is used as the material of the sealing tape (S) or if the material is thick, the end edge surfaces (S1) (S2) of the sealing tape (S) and the inner surface of the packaging material (T) are not fused together, and a through-hole (G) is generated between the two as shown in Figure 5. In rare cases, a sealing failure occurs in which the contents leak through the hole (G).

[0008] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a lateral sealing device that can reliably prevent poor sealing between the edge surface of a sealing tape and the inner surface of a tubular packaging material in a lateral seal portion formed by ultrasonic sealing, regardless of the type of sealing tape, and a filling and packaging machine equipped with the same device. [Means for solving the problem]

[0009] In order to achieve the above object, the present invention comprises the following aspects.

[0010] 1) In a filling and packaging machine which fills and packages contents into containers formed from a web-like packaging material having sealant layers on both sides, the web-like packaging material is formed into a tube shape by overlapping both end edges of the web-like packaging material by a predetermined width and vertically sealing the tube-like packaging material, and a sealing tape is attached to the inner surface of the tube-like packaging material so as to cover the step on the inside of the overlapped portion. The horizontal sealing device horizontally seals the tube-like packaging material by the length of one container while the tube-like packaging material is filled with contents, The ultrasonic horn and anvil are provided so as to be freely opened and closed while sandwiching the tubular packaging material, and have sealing surfaces extending in a direction perpendicular to the longitudinal direction of the tubular packaging material and facing each other, A horizontal sealing device for a filling and packaging machine, in which a first groove extending so as to intersect with one edge surface of the sealing tape when viewed from the front during horizontal sealing, and a second groove extending so as to intersect with the other edge surface of the sealing tape when viewed from the front during horizontal sealing, are formed on the sealing surface of either the ultrasonic horn or the anvil.

[0011] 2) A horizontal sealing device for a filling and packaging machine as described above in 1), wherein the first groove is composed of one inclined groove or multiple parallel inclined grooves extending so as to intersect diagonally with one edge surface of the sealing tape as viewed from the front during horizontal sealing, and the second groove is composed of one inclined groove or multiple parallel inclined grooves extending so as to intersect diagonally with the other edge surface of the sealing tape as viewed from the front during horizontal sealing.

[0012] 3) a tape application device for applying a sealing tape to one edge of one side of a web-shaped packaging material having a sealant layer on both sides, so that a part of the sealing tape extends beyond the edge; a vertical sealing device that forms a tubular packaging material by overlapping both end edges of the web-like packaging material by a predetermined width and vertically sealing the both end edges, and attaches an overhanging portion of a sealing tape to the inner surface of the tubular packaging material so as to cover a step on the inner side of the overlapping portion; A filling and packaging machine having an ultrasonic horn and an anvil that are arranged to be freely opened and closed while sandwiching a tubular packaging material and that have sealing surfaces extending in a direction perpendicular to the longitudinal direction of the tubular packaging material and facing each other, and a transverse sealing device that transversely seals the tubular packaging material filled with contents at the length of one container, A filling and packaging machine, wherein the horizontal sealing device is the horizontal sealing device described above in 1) or 2). Effect of the Invention

[0013] According to the horizontal sealing device of the filling and packaging machine described above in 1), even if the end edge surfaces of the sealing tape and the inner surfaces of the two flattened packaging portions that are pressed together by squeezing the tubular packaging material are not fused together during horizontal sealing, resulting in a through-hole between the two, the occurrence of poor sealing can be reliably prevented as described below. That is, the pressure applied by the sealing surfaces of the ultrasonic horn and the anvil is weaker at the locations of the two packaging parts corresponding to the first and second grooves. As a result, a passage is formed between the two crimped packaging parts so as to intersect with each edge surface of the sealing tape. The molten resin formed by melting a part of the thermoplastic resin constituting the sealant layer on the inner side of the tubular packaging material by ultrasonic vibration moves through the passage and flows into the cavity facing each edge surface of the sealing tape. As a result, the cavity is filled with resin, so that the contents do not leak out through the cavity.

[0014] According to the horizontal sealing device of the filling and packaging machine described above in 2), the effect of preventing the occurrence of sealing defects in the horizontal seal portion described above can be more reliably achieved.

[0015] According to the filling and packaging machine of 3) above, by using the horizontal sealing device of 1) or 2) above, it is possible to reliably prevent sealing defects in the horizontal seal portion regardless of the type of sealing tape. [Brief description of the drawings]

[0016] [Figure 1] 1 shows a horizontal sealing device of a filling and packaging machine according to an embodiment of the present invention, where (a) is a partially enlarged horizontal cross-sectional view, and (b) is a partially enlarged front view of the anvil taken along line bb in (a). [Diagram 2] 2 is a partially enlarged vertical cross-sectional view of the transverse sealing device taken along line II-II in FIG. 1. [Diagram 3] 3 is a partially enlarged vertical sectional view of the transverse sealing device taken along line III-III in FIG. 1. [Figure 4] FIG. 1 is a perspective view showing an overall outline of a conventional filling and packaging machine. [Diagram 5] 4 is a partially enlarged horizontal cross-sectional view showing a horizontal seal portion formed by a horizontal sealing device of the filling and packaging machine. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Next, an embodiment of the present invention will be described below with reference to the drawings. Figures 1 to 3 show details of a horizontal sealing device of a filling and packaging machine according to an embodiment of the present invention. Note that in Figures 2 and 3, the two overlapping portions of the overlap portion (T1) of the tubular packaging material (T) and the sealing tape (S) are not shown. Furthermore, the structure of the filling and packaging machine of this embodiment is substantially the same as that of the prior art described above with reference to FIG. 4, except for the detailed structure of the horizontal sealing device described below, so duplicated explanations will be omitted.

[0018] As shown in Figures 1 to 3, the ultrasonic horn (17A) and anvil (17B) of the horizontal sealing device are composed of metal bars that extend in a direction perpendicular to the longitudinal direction of the tubular packaging material (T) and face each other with the tubular packaging material (T) in between.

[0019] The ultrasonic horn (17A) has two strip-shaped sealing surfaces (171), one above the other, which extend parallel to each other along the length direction on the inside surface facing the tubular packaging material (T). Between the two sealing surfaces (171) is provided a cutter escape groove (178). This ultrasonic horn (17A) is housed in a stopper (170A) made of a hollow bar having an opening on its inner surface facing the tubular packaging material (T) so that the sealing surface (171) protrudes slightly from the opening. Although detailed illustration is omitted, the high-frequency electrical energy emitted from the ultrasonic oscillator is converted into mechanical vibration energy by a converter, and this mechanical vibration energy is increased or decreased by a booster and then transmitted to the ultrasonic horn (17A), so that the tubular packaging material (T) is vibrated at the required amplitude through the ultrasonic horn (17A).

[0020] The anvil (17B) has, on its inner surface facing the tubular packaging material (T), two upper and lower strip-shaped sealing surfaces (172) that extend parallel to each other along the length and face the two sealing surfaces (171) of the ultrasonic horn (17A). A cutter (175) for cutting the horizontal seal portion at the widthwise middle position is housed in a slit (174) formed between the two seal surfaces (172) so as to be able to freely appear and disappear. Steps (174a) are formed at the upper and lower edges of the opening of the slit (174) and are perpendicular to the depth direction of the slit (174) and face the ultrasonic horn (17A). Horizontal grooves (176) with a V-shaped cross section extending along the length of the sealing surfaces (172) are formed in the upper and lower portions of the upper and lower sealing surfaces (172). These horizontal grooves (176) are intended to allow a portion of the molten thermoplastic resin constituting the sealant layer on the inner surface of the packaging material (T) portions to be extruded and form resin pools (R2) at locations adjacent to the inner surfaces of the two flat packaging material (T) portions that are fused together by the horizontal seal. As shown in Fig. 2 and Fig. 3, the upper sealing surface (171) of the ultrasonic horn (17A) is formed so that its upper edge is at approximately the same height as the width center of the upper horizontal groove (176) of the anvil (17B), and the lower sealing surface (171) of the ultrasonic horn (17A) is formed so that its lower edge is at approximately the same height as the width center of the lower horizontal groove (176) of the anvil (17B), and the arrangement of both sealing surfaces (171) also facilitates the formation of the resin pool (R2). The presence of these resin pools (R2) improves the sealing performance of the transverse seal portion. As shown in Fig. 2 and Fig. 3, a similar resin pool (R3) is also formed in the cut side portion of the tubular packaging material (T) opposite the resin pool (R2) across the two flat packaging material (T) portions to be transversely sealed.

[0021] An absorbing portion (173) is formed in the center of the length of the upper and lower sealing surfaces (172) of the anvil (17B) to absorb the steps (T11) and (T12) occurring between the overlapping portion (T1) and the other portion (T2) of the tubular packaging material (T). The absorbing portion (173) is composed of a groove (173) having an isosceles trapezoidal cross section extending in the vertical direction perpendicular to the longitudinal direction of both sealing surfaces (172). During lateral sealing, the inner step (T11) and the outer step (T12) of the overlapping portion (T1) of the tubular packaging material (T) (in other words, the end faces of the packaging material (T) forming these steps) are usually located on the inclined surfaces (173a) on both sides of the groove (173). Recesses (177) slightly deeper than the depth of the groove (173) are formed on both the upper and lower sides of the groove (173). The absorbing portion is not limited to the illustrated form, and may be formed, for example, as a groove having a concave arc shape in cross section, or a corrugated uneven portion in cross section. The absorbing portion may be formed on the sealing surface of the ultrasonic horn. Furthermore, the absorbing portion may not be formed on the sealing surface.

[0022] In addition, the upper and lower sealing surfaces (172) of the anvil (17B) are formed with a first groove (179a) extending so as to intersect with an edge surface (S1) of one side (left side in FIG. 1) of the sealing tape (S) when viewed from the front during lateral sealing, and a second groove (179b) extending so as to intersect with an edge surface (S2) of the other side (right side in FIG. 1) of the sealing tape (S) when viewed from the front during lateral sealing. In FIG. 1(b), the position of the edge surface (S1) of one side (left side in FIG. 1) of the sealing tape (S) is indicated by a chain line (L1), and the position of the edge surface (S2) of the other side (right side in FIG. 1) is indicated by a chain line (L2). In addition, the above-mentioned "when viewed from the front" refers to the state when viewed from the side facing the sealing surface (172) (for example, the left side in FIGS. 2 and 3). As described above, when the lateral sealing device (17) seals the tubular packaging material (T) laterally, the end edge surfaces (S1) (S2) of the sealing tape (S) and the inner surfaces of the two flattened packaging material (T) portions that are pressed together by the tubular packaging material (T) may not be fused together, resulting in a through-hole (G) between them (see FIG. 5). Even in this case, the first groove (179a) and the second groove (179b) formed on the upper and lower sealing surfaces (172) of the anvil (17B) provide the following effects to reliably prevent poor sealing. That is, the pressure applied by the ultrasonic horn (17A) and the sealing surfaces (171) (172) of the anvil (17B) is weakened at the locations of the first groove (179a) and the second groove (179b) of the two pressed packaging material (T) portions that correspond to the first groove (179a) and the second groove (179b). As a result, a passage is formed between the two crimped packaging material (T) parts, intersecting with each edge surface (S1) (S2) of the sealing tape (S). The molten resin formed by melting a part of the thermoplastic resin constituting the sealant layer on the inner side of the tubular packaging material (T) by ultrasonic vibration moves through the passage and flows into the cavity facing each edge surface (S1) (S2) of the sealing tape (S). This fills the cavity with resin (R1), so that the contents do not leak through the cavity.

[0023] In this embodiment, the first groove (179a) is made up of a plurality of parallel inclined grooves extending so as to intersect obliquely with one edge surface (S1) of the sealing tape (S) as viewed from the front during lateral sealing, while the second groove (179b) is made up of a plurality of parallel inclined grooves extending so as to intersect obliquely with the other edge surface (S2) of the sealing tape (S) as viewed from the front during lateral sealing. In the passages formed at the locations corresponding to the first groove (179a) and the second groove (179b) in the two crimped packaging material (T) portions, the molten resin flows toward both the liquid-contacting side and the cutting side, respectively. Then, the flows of the molten resin collide with the end edge surfaces (S1) and (S2) of the sealing tape (S), thereby filling the hollow portion. Therefore, if the orientation of the first groove (179a) and the second groove (179b) is set symmetrically in the vertical and horizontal directions as shown in Figure 1 (b), the way in which the molten resin flows against each end edge surface (S1) (S2) of the sealing tape (S) will be the same, so that the sealing conditions of the parts to be laterally sealed can be made uniform. From the viewpoint of equalizing the sealing conditions, the inclination direction of these grooves (179a) and (179b) may extend in the opposite direction to that shown in FIG. 1(b). However, when the orientation of the first groove (179a) and the second groove (179b) is set as shown in FIG. 1(b), the probability that the flow of molten resin toward the liquid-contacting side will hit each edge surface (S1) (S2) of the sealing tape (S) is higher than when the orientation is the other way around. Therefore, the hollow portions facing the edge surfaces (S1) (S2) of the sealing tape (S) at locations closer to the liquid-contacting side are filled with resin (R1), and it is considered that leakage of the contents through the hollow portions can be more reliably prevented. The first groove (179a) and the second groove (179b) are formed so as to cross the upper and lower seal surfaces (172). However, the first groove (179a) and the second groove (179b) may be non-crossing so as not to reach either the upper or lower edge or both edges of the upper and lower seal surfaces (172). In particular, when the grooves (179a) and (179b) do not reach either the upper or lower edge of the upper and lower seal surfaces (172), in other words, when one end of the grooves (179a) and (179b) is blocked, it is considered possible to control the flow direction of the molten resin. It is sufficient that at least one first groove (179a) and one second groove (179b) are formed on each of the upper and lower seal surfaces (172), but if multiple grooves are formed at intervals as in the above embodiment, even if the position of the sealing tape (S) shifts along the length direction of the upper and lower seal surfaces (172) during horizontal sealing, the effect of preventing the occurrence of sealing defects can be more reliably obtained by filling the cavities generated at the positions facing the end edge surfaces (S1) and (S2) of the sealing tape (S) with resin (R1). Note that the multiple inclined grooves constituting each of the first groove (179a) and the second groove (179b) may be arranged parallel to each other and at equal pitches as shown in FIG. 1, or some or all of the inclined grooves may be non-parallel or the pitch may be changed. The first groove (179a) and the second groove (179b) may be formed as a curved, crank-shaped, or wavy groove, in addition to the oblique straight groove as in the above embodiment. Also, the first groove (179a) and the second groove (179b) may be formed as a V-shaped or Y-shaped groove as viewed from the front, arranged alternately in upside-down directions along the length of the sealing surface (172). In addition, the first groove (179a) and the second groove (179b) may be formed on the sealing surface (172) of the anvil (17B) as in the above embodiment, or may be formed on the sealing surface (171) of the ultrasonic horn (17A).

[0024] Next, preferred configurations of the first groove (179a) and the second groove (179b) of the horizontal sealing device of the above embodiment will be described. Note that the following configurations are shown for the first groove (179a) and the second groove (179b) on the upper and lower sealing surfaces (172) of the anvil (17B), respectively. The width (W) of the first groove (179a) and the second groove (179b) is preferably 0.05 to 0.4 mm, and more preferably 0.1 to 0.3 mm. If the width (W) is less than 0.05 mm, the molten resin may not flow easily toward the end surfaces (S1) and (S2) of the sealing tape (S), and the cavity portions generated at the positions facing the end surfaces (S1) and (S2) of the sealing tape (S) may not be filled. On the other hand, if the width (W) exceeds 0.4 mm, the flow speed of the molten resin flowing toward the end surfaces (S1) and (S2) of the sealing tape (S) may become slow, and the cavity portions generated at the positions facing the end surfaces (S1) and (S2) of the sealing tape (S) may not be filled with the resin (R1), and the area of ​​the sealing surface (172) may be reduced, which may affect the sealing performance. The depth (D) of the first groove (179a) and the second groove (179b) is preferably 0.03 to 0.4 mm, more preferably 0.05 to 0.2 mm. If the depth (D) is less than 0.03 mm, the molten resin may not flow easily toward the end surfaces (S1) and (S2) of the sealing tape (S), and the cavity formed at the position facing the end surfaces (S1) and (S2) of the sealing tape (S) may not be filled. On the other hand, if the depth (D) exceeds 0.4 mm, the flow speed of the molten resin flowing toward the end surfaces (S1) and (S2) of the sealing tape (S) may become slow, and the cavity formed at the position facing the end surfaces (S1) and (S2) of the sealing tape (S) may not be filled with the resin (R1). The cross-sectional shape of the first groove (179a) and the second groove (179b) can be, for example, V-shaped, U-shaped, or arc-shaped, but is preferably V-shaped, which is believed to facilitate the flow of molten resin toward each end edge surface (S1) (S2) of the sealing tape (S). The inclination (θ) of the first groove (179a) and the second groove (179b) with respect to each edge surface (S1) (S2) of the sealing tape (S) is preferably 25 to 80°, more preferably 35 to 55°. If the inclination (θ) is less than 25°, the number of the first grooves (179a) and the second grooves (179b) must be increased in consideration of the amount of displacement of the sealing tape (S), which may affect the sealing performance at locations other than those corresponding to each edge surface (S1) (S2) of the sealing tape (S). On the other hand, if the inclination (θ) exceeds 80°, the molten resin may not easily flow toward each edge surface (S1) (S2) of the sealing tape (S). In addition, when there is only one first groove (179a) and one second groove (179b), it is preferable that the inclination (θ) of the first groove (179a) and the second groove (179b) relative to each end edge surface (S1) (S2) of the sealing tape (S) be 55° or more, taking into account the amount of deviation of the sealing tape (S). The number of the first grooves (179a) and the second grooves (179b) is preferably 2 to 10, and more preferably 4 to 8. If there is only one groove, there is a risk that it will not be possible to accommodate the expected amount of displacement of the sealing tape (S). On the other hand, if there are more than 10 grooves, there is a risk that the sealing performance will be affected in areas other than those corresponding to the end edge surfaces (S1) and (S2) of the sealing tape (S). The pitch (P) of the first groove (179a) and the second groove (179b) is preferably 0.2 to 0.8 mm, and more preferably 0.3 to 0.7 mm. If the pitch (P) is less than 0.2 mm, the sealing area may be too small, resulting in poor sealing. On the other hand, if the pitch (P) is more than 0.8 mm, the cavities occurring at positions facing the end surfaces (S1) and (S2) of the sealing tape (S) may not be filled with the resin (R1). [Industrial Applicability]

[0025] The present invention is suitable for use as a filling and packaging machine that fills and packages contents such as liquid foods and beverages into containers formed from a web-like packaging material mainly made of paper or the like, and as an ultrasonic sealing type horizontal sealing device used in such a machine. [Explanation of symbols]

[0026] (10): Filling and packaging machine (13): Tape application device (15): Vertical sealing device (17): Horizontal sealing device (17A): Ultrasonic horn (171): Sealing surface (of ultrasonic horn) (17B): Anvil (172): Sealing surface (of anvil) (179a): First Groove (179b): Second Groove (M): Web-shaped packaging material (T): Tubular packaging material (T1): Overlapped section (T11): Inner step (S): Sealing tape (S1): One edge surface (S2): The other edge surface

Claims

1. In a filling and packaging machine which fills and packages contents into containers formed from a web-like packaging material having a sealant layer on both sides, the web-like packaging material is formed into a tube shape by overlapping both end edges of the web-like packaging material by a predetermined width and vertically sealing the tube-like packaging material, the tube-like packaging material having a sealing tape attached to its inner surface so as to cover the step on the inside of the overlapping portion, and the tube-like packaging material is sealed horizontally at the length of one container while the tube-like packaging material is filled with contents, The ultrasonic horn and anvil are provided so as to be freely opened and closed while sandwiching the tubular packaging material, and have sealing surfaces extending in a direction perpendicular to the longitudinal direction of the tubular packaging material and facing each other. a first groove extending so as to intersect with one end edge surface of the sealing tape as viewed from the front during lateral sealing, and a second groove extending so as to intersect with the other end edge surface of the sealing tape as viewed from the front during lateral sealing, are formed on a sealing surface of either the ultrasonic horn or the anvil; A lateral sealing device for a filling and packaging machine, wherein a first groove and a second groove are formed spaced apart from each other with a portion therebetween that overlaps with an overlapping portion of a tubular packaging material when viewed from the front during lateral sealing.

2. 2. The lateral sealing device of a filling and packaging machine as described in claim 1, wherein the first groove consists of one inclined groove or a plurality of parallel inclined grooves extending so as to intersect obliquely with one edge surface of the sealing tape when viewed from the front during lateral sealing, and the second groove consists of one inclined groove or a plurality of parallel inclined grooves extending so as to intersect obliquely with the other edge surface of the sealing tape when viewed from the front during lateral sealing.

3. a tape application device for applying a sealing tape to one edge of one side of a web-like packaging material having a sealant layer on both sides thereof so that a part of the width of the sealing tape protrudes; a vertical sealing device which forms a tubular packaging material by overlapping both end edges of the web-like packaging material by a predetermined width and vertically sealing the both end edges, and attaches an overhanging portion of a sealing tape to the inner surface of the tubular packaging material so as to cover a step on the inner side of the overlapping portion; A filling and packaging machine including an ultrasonic horn and an anvil that are arranged to be freely opened and closed while sandwiching a tubular packaging material and that have sealing surfaces extending in a direction perpendicular to the longitudinal direction of the tubular packaging material and facing each other, and a transverse sealing device that transversely seals the tubular packaging material filled with contents at the length of one container, A filling and packaging machine comprising the transverse sealing device according to claim 1 or 2.

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