JP2007245486A - Bar for sealing bottom of standing pouch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for sealing the bottom of a standing pouch which prevents the occurrence of a stripe-shaped trace caused by defective sealing even when split type sealing bars are used while being separated from each other. <P>SOLUTION: The bottom sealing bars have a plurality of sealing bar unit bodies separated from each other which seal the entire bottom sealing area of a pouch to be sealed in cooperation with respective sealing action regions to correspond to sealing positions arranged in the sending direction of the pouch to be sealed. At least one sealing bar unit body out of the sealing bar unit bodies is different in a sealing action region in the sending direction to the bottom sealing area from the other sealing bar unit bodies. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a bottom seal bar of a standing pouch bag making machine.

    The standing pouch is formed in a bag shape by sandwiching the bottom material between two stacked body materials and heat-sealing the edges (bottom portion and side portion) of each other. The body and bottom material are a strip of continuous pouches for a number of standing pouches, and move in multiple seal positions while being intermittently fed in the feed direction. The bottom material is heat-sealed (bottom seal), and the two body members are heat-sealed at the side portions (side seal). In the bottom seal, the body material and the bottom material are sandwiched between the bottom seal bars and heated to perform heat sealing. However, there are cases where air bubbles are confined in the sealing area heat-sealed as described below.

JP2004-249514 JP 2004-338362 A JP 9-188311 A JP 2001-206384 A JP 2004-188675 A

In a standing pouch bag making machine, the bottom seal bar is usually a heated pair of upper and lower metal plates that are sandwiched between the standing pouch body sent to the sealing position by intermittent feeding, or 1 It is a part for heat-welding the film between the body parts, but in order to prevent the film from becoming wrinkled due to overheating, it is divided into multiple stages and sandwiched between the bottom seal bars, and it is effective by repeating short heating several times Is heating up. In order to perform the above multi-stage heating while feeding the film, the sealing position is provided for several bags in the film feeding direction, and the bottom seal bar 101 shown in FIG. The seal action area where the bottom seal processing is first applied to the pouch is the first-stage seal action area 103a, the seal action area where the bottom seal process is next applied is the second-stage seal action area 103a, and then the bottom seal process is performed. The seal action area to be added is referred to as a third-stage seal action area 103c). As shown in FIGS. 15 and 16, the integral seal bar 101a having a seal action area 103 corresponding to the pitch of several pouches is provided. It is normal (FIGS. 15 and 16) (see Patent Documents 3, 4 and 5).
However, since the conventional bottom seal bar has a long width, it is difficult to accurately adjust contact when assembling the upper and lower parts, and since it is a consumable item, the bottom seal bar has recently been replaced with one bag as shown in FIG. Divided seals in which the seal bar unit bodies 102a, 102b and 102c are divided into seal action areas of each pitch, and a plurality of seal bar unit bodies 102a, 102b and 102c are arranged at intervals with respect to each other as a countermeasure against thermal expansion. Bar 101b has been developed. When adjusting the contact between the upper and lower parts, adjust the height and parallel adjustment of each individual seal bar unit divided into short parts, or replace the worn seal bar unit with the bottom seal bar unit that needs to be replaced. By exchanging only one body (for one pitch), the replacement cost is lower than that of a long bottom seal bar for several pitches (FIG. 17) (see Patent Documents 1 and 2). The shape of the seal area on the sealed pouch when the split seal bar 101b is used is as shown in FIG.
However, the bottom seal bar unit body for one pitch is separated from the adjacent bottom seal bar unit body by the above-mentioned measures to prevent thermal expansion. Air easily collects in the vicinity of the part where the side seal part that seals the films intersects (intersection part). If the side seal is performed as it is, the air left in the seal part is in a bubble-like state as shown in FIG. Due to insufficient heating / pressurization at the intersection, it becomes a streak trace 135 due to a poor seal, and when the finished standing pouch is filled and sealed, leakage occurs from the intersection. There is a fear. That is, the operation when such a split seal bar 101b is used is as follows. As shown in FIGS. 18 to 22, the seal bar unit body 102 (first-stage seal bar unit body 102a, second-stage seal bar unit body 102b, third-stage seal bar unit body 102c) has a seal position 111a for each pitch, Three are arranged with a gap d (see FIG. 17) between 111b and 111c, a side sealer 106 is arranged on the pitch boundary with a next pitch interval, and a cutter 107 is arranged on the next pitch boundary. Yes. The three seal bar units 102a, 102b, 102c have the same size of the seal action areas 103a, 103b, 103c (see FIG. 17), and the positions in the seal positions 111a, 111b, 111c are also the same.
A sealed pouch 10 having a bottom material 9 folded between a pair of body members 8a and 8b is supplied to a bottom sealer of a bag making machine. First, a first-stage seal bar unit is provided at a first-stage seal position 111a. The first stage is heat-sealed by the body 102a, then sent to the second-stage seal position 111b, heat-sealed by the second-stage seal bar unit body 102b, and then sent to the third-stage seal position 111c. The third stage heat seal is performed by the seal bar unit 102c. The portions corresponding to the gaps d between the seal bar unit bodies 102 at each stage of the sealed pouch 10 do not have the seal action areas 103a, 103b, 103c of any of the seal bar unit bodies 102 at any stage, and are heat sealed. In addition, the air from the heat-sealed portion flows into the air reservoir 105 that swells and becomes easy to become. Further, when the sealed pouch 10 is fed by one pitch, the air reservoir 105 reaches the position of the side sealer 106, and the air reservoir 105 is crushed to form a side seal portion 131. When the side seal portion 131 is further fed and reaches the position of the cutter 107, the side seal portion 131 is cut by the cutter 107. Furthermore, if the sealed pouch 10 is fed by 1 pitch and the other side is also cut by the cutter 107, after the cutting, the separated standing pouch 133 of one bag shown in FIGS. 20 (c) and 23 (a) is formed. Complete. However, as shown in FIGS. 21 and 22 (a), in particular, a good heat seal in which the body materials 8a and 8b and the bottom material 9 are in close contact is formed at a portion of the heat-sealed pouch 10 where the air pocket 105 is removed. Thus, air does not enter (FIGS. 22B and 22D), and the central portion of the side seal portion 131 sealed while the air reservoir 105 is crushed by the side sealer 106 is also formed on the body 8a. Although a good heat seal is formed in which 8b and the bottom material 9 are in close contact with each other, air does not enter (FIG. 22 (b)). Air may be trapped on both sides of the crushed side seal 131 from the center without any escape space, and may remain as streak marks 135 as shown in FIG. When a side seal serving as a pouch boundary is applied in the subsequent process, particularly at the end of the bottom seal portion 131, the portion where the body materials 8a and 8b are in direct contact (so-called intersection portion in FIG. 18B) As described above, the air remains in the tube 134) and has a streak-like appearance, which may deteriorate the sealing performance. For this reason, there is a demand for the development of a bottom seal technique that does not leave streak marks due to defective seals even at the time of using divided-type seal bars at intervals.
The present invention has been made in view of the circumstances as described above, and even when the seal bar unit body of the split type seal bar is used with a gap, streak marks are generated at the intersection 134 due to defective sealing. It is an object of the present invention to provide a bottom sealing technology for a standing pouch.

  Corresponding to this object, the bottom seal bar of the standing pouch according to the present invention has a plurality of seal bar units separated from each other in which the respective sealing action areas cooperate to seal the entire bottom seal region of the sealed pouch. At least one seal bar unit of the plurality of seal bar units is another seal bar. The operation area in the feed direction with respect to the unit body and the bottom seal area is different.

According to the first aspect of the present invention, in the bottom seal bar of a standing pouch having a plurality of seal bar units arranged corresponding to the intermittent feed pitch of the pouch, a seal working area on the pouch is provided for each of the plurality of seal bar units. As a whole, the bottom seal area seals while extruding air even at the intersection with the side seal, so there is no air remaining at the intersection of the side seal and high performance sealing can be achieved. it can. The effects of these inventions are common to the first to fourth embodiments described below.
Furthermore, in the invention according to claim 2, since the plurality of seal bar unit bodies include a sealing action area having a similar shape, the seal bar unit bodies are arranged closer to each other and sealed step by step without a gap. Is possible.
In the invention of claim 3, since the seal positions are arranged at an equal pitch, the arrangement configuration of the seal device or the design thereof is simplified.
In the invention according to the fourth aspect, since the position of the seal action area of the seal bar unit body at the seal position is different, various bottom seal configurations are possible.
In the invention according to claim 5, since the positions of the seal bar unit bodies in the seal position of the equal pitch are mutually related, it is possible to cope with various bottom seal configurations with a seal bar unit body of a single shape seal action area. Can do.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

First embodiment

  First, the first embodiment will be described. The first embodiment implements the present invention by changing the interval between the equal width bottom seal bar units.

In FIG. 1, 1a is a seal bar of a bottom sealer of a pouch bag making machine, and the seal bar 1a is composed of a plurality (three in this embodiment) of seal bar units 2 (2a, 2b, 2c). . In the pouch bag making machine, seal positions 11a, 11b, 11c having a width P equal to the intermittent feed pitch P of the sealed pouch 10 for bottom sealing have a constant pitch P along the feed direction of the sealed pouch 10. Each seal bar unit 2a, 2b, 2c is arranged corresponding to each seal position 11a, 11b, 11c. Each of the seal bar units 2a, 2b, 2c has sealing action areas 3a, 3b, 3c for heat-sealing by pressing the plastic film. The seal action areas 3a, 3b, 3c of the respective seal bar unit bodies 2a, 2b, 2c are arranged along the intermittent feed direction 4 of the sealed pouch 10 to be sealed, and the seal action of the adjacent seal bar unit bodies 2 Between the areas 3, gaps D1 and D2 are maintained. The widths (pa) are the same in the intermittent feed direction 4 of the seal action areas 3a, 3b, 3c of the respective seal bar units 2a, 2b, 2c, and the width (pa) is determined from the feed pitch P. Slightly a small. The positions of the seal action areas 3a, 3b, 3c of the seal bar unit bodies 2a, 2b, 2c with respect to the respective seal positions 11a, 11b, 11c are different from each other, and the seal action of the seal bar unit body 2a is different from each other. The zone 3a coincides with 12a from the pitch point of the feed pitch, and the seal action zone 3b of the seal bar unit body 2b advances from the feed pitch point 12b by a distance a / 2 in the feed direction, and the seal bar unit body 2c. The seal action area 3c advances by a distance a in the feed direction from the position of the feed pitch point 12c. Therefore, a space of D1 = D2 = (3/2) a including the pitch point 12c is opened between the seal bar unit 3b and the seal bar unit 3c, and both sides of the pitch points 12a, 12b and 12c are post-processed. This is the region where the side seal is processed.
The operation of the bottom seal in the seal bar 1a configured as described above is as follows. The bag making machine 31 used by being set in the bag making machine 31 shown in FIG. 1c has a bottom split seal part 32, a bottom cooling seal part 33, a side seal part 34, and a side cooling part 35.
The sealed pouch is bottom-divided and sealed by the seal bar 1a at the bottom-divided seal portion 32, then bottom-cooled by the bottom cooling portion 33, side-sealed by the side seal portion 33, and then side-sealed by the side cooling portion 35, Finally, each pouch is cut to complete an individual standing pouch. (However, FIG. 1C shows a five-stage heat-sealing bag-making machine in which the seal bar to which the mounting base is also divided is provided with a five-stage seal bar unit. In this state, the continuous body of the sealed pouch 10 sandwiching the bottom material 9 with the body materials 8a and 8b is intermittently fed to reach the first seal position 11a. The sealed pouch 10 is heated and pressurized to the first-stage seal bar unit 2a and bottom-sealed, but the seal action area 3a indicated by the left-down hatching by the first-stage seal bar unit 2a coincides with the pitch point 12a. (FIG. 2). Next, when the sealed pouch 10 advances to the second seal position 11b, the sealed pouch is heated and pressurized by the second-stage seal bar unit 2b, and the bottom seal is further processed in a superimposed manner. The seal action area 3b indicated by the left-down hatching by the stage seal bar unit 2b does not coincide with the pitch point 12b and advances forward, so there are portions that are not sealed on both sides of the seal position 11b. (Figure 3). Next, when the sealed pouch 10 advances to the third seal position 11c, the sealed pouch 10 is heated and pressurized by the third-stage seal bar unit 2c, and the bottom seal is further processed in a three-layer manner. The seal action area 3c indicated by vertical line hatching by the third-stage seal bar unit 2c coincides with the pitch point 12d at the front end of the seal position 11c. (Figure 4). The shape of the seal area on the sealed pouch 10 at this time is as shown in FIG. 14b. In this way, the seal bar unit bodies 2a, 2b and 2c in which the bottom seal area 13 is divided into three parts are executed in a short time by heating and pressurizing in three times, so that the bottom can be formed without causing wrinkles on the film. The seal is realized. At this time, since the seal action areas 3a, 3b, and 3c are slightly shifted in the direction of the intermittent feed direction 4 in the seals by the respective seal bar units 2a, 2b, and 2c, the gap between the adjacent seal bars is separated by another seal. Filling in position and sealing while pushing out residual air, no air is trapped in the seal action area, and the bottom seal area 13 thus formed covers the planned area of the side seal area 14 as a whole. In addition, bubbles do not enter the side seal portion, and no streak-like appearance or seal failure occurs.
Further, in the present invention, the plurality of seal bar unit bodies are not integrated and configured as a single body, but the seal bar unit bodies are configured as separate and independent individual bodies, and the upper and lower parts of the seal bar unit body are The contact adjustment is performed by adjusting the height and parallel of each individual seal bar unit divided into short parts, so that the operation for installation is easy. Therefore, the cost can be reduced as compared with the case where the entire seal bar as a single unit is replaced.
Next, a second embodiment of the present invention will be described with reference to FIG. The second embodiment is the same as the first embodiment in that the present invention is implemented by changing the arrangement position in each seal position of the equal-width seal action area of the seal bar unit body. It differs from the first embodiment in that the shape of the working area is different for each seal bar unit. In other words, in this second embodiment, the shape of the first seal working area 3a is asymmetrical and the outline 15 of the substantially V-shaped non-seal part and the oval non-seal part 16 provided as appropriate are the seal action area 3a. The centroid 17 is positioned to the left of P / 2 from the pitch point 12a, the right end of the first sealing action area 3a coincides with the pitch point 12a, and the shape of the second sealing action area 3b is symmetrical. The centroid 17 of the seal action area 3 having the outline 15 of the substantially V-shaped non-seal part and the oval non-seal part 16 is in the center of (P−a) / 2 from the pitch point 12b, and the third seal action. The shape of the area 3c is asymmetrical and is located to the right of (P / 2-a) from the pitch point 12c, and the left end of the third seal action area 3c coincides with the pitch point 12c. In this case, the shape of the seal area on the sealed pouch 10 by the triple overlap seal processing is filled with unsealed portions between the bottom silver units as shown in FIG. It is possible to match.
Next, a third embodiment of the present invention will be described with reference to FIGS. In this third embodiment, the seal action areas 3a, 3b, 3c of the respective seal bar unit bodies 2a, 2b, 2c are arranged along the intermittent feed direction 4, and between the adjacent seal bar unit bodies 2 The point where the distances D3 and D4 are maintained is the same as that of the first embodiment, but in this third embodiment, another seal bar unit among the plurality of seal action areas 3a, 3b and 3 is used. The sealing action areas 3a, 3b, 3c of the bodies 2a, 2b, 2c are different in that the size in the intermittent feed direction 4 is different.
That is, in FIGS. 6 to 9, the seal bar unit body 2a and the seal bar unit body 2c have the same size of the seal action areas 3a and 3c, but the seal bar unit body 2b has the seal action area 3b of the seal bar unit body 2c. It is configured to be smaller than b. That is, the seal bar unit body 2a and the seal bar unit body 2c have seal action areas 3a and 3c having a width (wc = wa) equal to the pitch point P, and the seal bar unit body 2b has a width wb (wb <wa). It has a working area 3b. All the sealing action areas 3a, 3b, 3c are located in the center of the respective sealing positions 11a, 11b, 11c.
The operation of the bottom seal in the seal bar unit 1c configured as described above is as follows.
When the continuous body of the sealed pouch 10 in which the bottom material 9 is sandwiched between the body materials 8a and 8b is intermittently fed and reaches the first seal position 11a, the sealed pouch 10 is moved to the first-stage seal bar unit 2a. Although it is heated and pressurized to be bottom-sealed, the seal action area 3a indicated by the left downward hatching by the first-stage seal bar unit 2a extends over the entire width (P) of the seal position 11a (FIG. 7). Next, when the sealed pouch 10 advances to the second seal position 11b, the sealed pouch is heated and pressurized by the second-stage seal bar unit 2b, and the bottom seal is further processed in a superimposed manner. Since the seal action area 3b shown by the left-down hatching by the step seal bar unit 2b is small by b, it is not sealed by (b / 2) on both sides of the seal position 11b (FIG. 8). Next, when the sealed pouch 10 advances to the third seal position 11c, the sealed pouch 10 is heated and pressurized by the third-stage seal bar unit 2c, and the bottom seal is further processed in a three-layer manner. The seal action area 3c indicated by vertical hatching by the third-stage seal bar unit 2c extends over the entire seal position 11c. (Figure 9). As a result, the bottom seal region 13 processed by the three seal action areas 3a, 3b, 3c of the three seal bar units 2a, 2b, 2c is completely applied to the side seal region 14 processed in the subsequent process. Become. The shape of the seal area on the sealed pouch in this case is as shown in FIG.
Next, a fourth embodiment of the present invention will be described with reference to FIGS. In the fourth embodiment, the seal action areas 3a, 3b, and 3c of the respective seal bar unit bodies 2a, 2b, and 2c are arranged along the intermittent feed direction 4 so that the seal bar unit bodies are adjacent to each other. Is the same as the first embodiment in that the distances D5 and D6 are maintained, but in the fourth embodiment, the other of the plurality of seal action areas 3a, 3b, and 3c is different. The seal bar unit bodies 2a, 2b, and 2c are different from the first embodiment in that the size and shape of the seal action areas 3a, 3b, and 3c and the intermittent feed direction 4 are different. That is, in FIG. 10 to FIG. 13, the seal bar unit body 2a and the seal bar unit body 2c have the same size (PC) in the seal action area 3a and the seal action area 3c. The action area 3c has a size (P + C). In addition to this, the central part through which the centroids of the seal action areas 3a, 3b, and 3c pass is on both side portions of the bottom seal area 13, that is, the side seal area 14. The side portions of the seal action areas 3a, 3b, and 3c form portions closer to the center of the bottom seal region 13, and therefore the seal bar units 2a, 2b, and 2c cooperate. The left half of the right adjacent bottom region 13 and the left adjacent bottom region 13 among the bottom regions 13 of the standing pouch adjacent to the left and right at the seal positions 11a, 11b, and 11c provided for each pitch. The right half of the bottom region 13 is sealed at the same time, and the right half of the right bottom region 13 and the left half of the left bottom region 13 are performed in a separate bottom sealing step.
The operation of the bottom seal in the seal bar 1D configured as described above is as follows. When the continuous body of the sealed pouch 10 in which the bottom material 9 is sandwiched between the body materials 8a and 8b is intermittently fed to the first seal position 11a, the sealed pouch 10 is moved to the first-stage seal bar unit 2a. It is heated and processed and bottom sealed (FIG. 11). This sealing area covers both sides of the side seal portion 14, and one half is slightly smaller than the half of the bottom seal region 13. Next, when the sealed pouch 10 advances to the second seal position 11b, the sealed pouch 10 is heated and pressurized by the second-stage seal bar unit 2b, and the bottom seal is further processed in a superimposed manner. The seal action area 3b shown by the left-handed hatching by the second-stage seal bar unit 2b is larger than the half of the seal area 13 because it is wide by b. Next, when the sealed pouch 10 advances to the third seal position 11a, the sealed pouch 10 is heated and pressurized by the third-stage seal bar unit 2c, and the bottom seal is further processed in a three-layer manner. The seal action area indicated by vertical line hatching by the third-stage seal bar unit 2c extends over both sides of the side seal portion 14, and one half is slightly smaller than the half of the bottom seal area. As a result, since the second-stage sealing action area 3b seals more than half of the bottom seal area 13, it was processed by the three sealing action areas 3a, 3b, 3c of the three seal bar units 2a, 2b, 2c. The bottom seal region 13 completely covers the left and right half regions of the side seal region 14 to be processed in a later process. The bottom seal in the other half region on the left and right sides of the bottom seal region 13 is performed in a separate process.
Since the seal area of the seal position 11b includes a common part with the seal areas of the seal positions 11a and 11c,
Unlike the bottom seal bar divided into a completely different shape of the concave curve shape part and the straight line part described in the above, the adjacent seal area may be divided without feeding the adjacent divided bottom seal bar nearly one pitch apart. It is possible to fill the seal area so that there is no gap, and it is particularly effective in terms of space saving of equipment when heat-sealing near the intersection three times or more. As described above, according to the first to fourth embodiments of the present invention, the seal by the short time heating and pressurization is divided into three times by the bottom seal action areas 3a, 3b and 3c in which the bottom seal area is divided into 13 parts. Therefore, the bottom seal is realized without wrinkling on the film. The seal by the seal bar units 2a, 2b and 2c has a slightly shifted seal action area in the intermittent feed direction 4, so that air is not trapped in the seal action area and the bottom seal action thus formed Since the areas 3a, 3b, and 3c cover the planned side seal area as a whole, bubbles do not enter the side seal portion, and neither streak-like generation nor seal failure occurs. As apparent from the above description, according to the present invention, a high-performance bottom seal can be obtained even when split-type seal bars are arranged at intervals. The gap between the seal bar unit bodies may be narrowed so as to straddle the feed pitch position, and the presence / absence of non-seal, the shape, and the number are not limited. Next, examples will be described.

In the form according to the first embodiment, bottom seal 5 stages of heating, 5 stages of cooling,
Side seal Example of heating 5 stages and cooling 5 stages Bag width (= film feed pitch during bag making); 130 mm
Width of split bottom seal bar for heating; 128mm
Pitch of arrangement of split bottom seal bar for heating; 131mm
Side seal bar for heating; upper aluminum, lower silicon rubber Results; streaks with a length of 1 mm or more 5 bags / 500 in production

The lower side of the heating side seal bar in Example 1 is also made of aluminum. Result: Generation of streaks with a length of 1 mm or more.

When the width of the divided bottom seal bar for heating (seal bar unit) is 129 mm in Example 1 Result: Stripe generation rate of 1 mm or more in length 4 bags / 500 bags in production

In the form according to the third embodiment, bottom seal 5 stages of heating, 5 stages of cooling,
Side seal Example of heating 5 stages and cooling 5 stages Bag width (= film feed pitch during bag making); 130 mm
Width of heating divided bottom seal bar a: 132 mm and 124 mm Pitch of arrangement of heating divided bottom seal bar a: 131 mm (132 mm and 124 mm were alternately arranged with a gap of 2 mm. (Three with a width of 132 mm, two with a width of 124 mm)
Side seal bar for heating; upper side, made of aluminum, lower side, made of silicon rubber Result: Streaks with a length of 1mm or more 1 bag / 500 bags in production

The lower side of the heating side seal bar in Example 4 is also made of aluminum. Result: Streaks with a length of 1 mm or more 0 bags / 500 bags

Comparative Example 1

Example in which the arrangement pitch of the divided bottom seal bars for heating was set to 130 mm equal to the film feed pitch in Example 1. Result: The generation rate of streaks with a length of 1 mm or more 47 bags / 500 bags in production
Main specifications at the time of bag making of Example / Comparative Example ■ Bag material;
Body material; From the outside,
Nylon 20 μm thick / LLDPE (linear low density polyethylene) 135 μm thick double layer film Bottom material; Nylon 15 μm thick / LLDPE 130 μ thick double layer film Bag size; Length 260 mm × Width 130 mm Bottom material folding width 36 mm
■ Seal bar configuration When the bag size is 260 * 130 * 36 Side seal bar;
<For heating>
Upper / upper / lower aluminum made Length 540mm x Width 10mm (Straight seal bar)
Bottom (if not made of aluminum) Made of silicon rubber Length 620 x 90mm
<For cooling>
Upper side made of aluminum, lower side made of silicon rubber Length 620mm x Width 90mm
(The top and bottom are alternated)
Split bottom seal bar;
<For heating>
Top and bottom aluminum length (longest part of the film heating surface) 50mm x width 128mm
Product part is 45mm wide
<For cooling>
Top Made of aluminum, Bottom Made of silicon rubber Length 650mm x width 820mm (integral)
The upper side holds the bottom part
Approximately 650mm in length X 120mm in width
■ Seal conditions Side seal Heating; Load 4.0KN, Temperature 200 ° C x 5 stages
Cooling; Load 2.0KN, Temperature 20 ° C x 5 stages Bottom seal Heating; Load 1.5KN (the whole split seal bar unit)
Temperature 190 ° C x 5 stages
Cooling; Load 2.0KN Temperature 20 ° C x 5 stages

1 shows a bag making machine of a seal bar unit body of a seal bar according to a first embodiment of the present invention and an area of action of the seal bar unit body, wherein (a) is a front view of the seal area and (b) is a seal action. Plan view of the area, (c) is a front explanatory view showing the configuration of the bag making machine Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 1st seal bar unit body which concerns on 1st Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 2nd seal bar unit body which concerns on 1st Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 3rd seal bar unit body which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows the seal | sticker action area | region of the seal bar unit body of the seal bar which concerns on 2nd Embodiment of this invention, (a) is a front view, (b) is a top view It is explanatory drawing which shows the seal | sticker action area | region of the seal bar unit body of the seal bar which concerns on 3rd Embodiment of this invention, (a) is a front view, (b) is a top view Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 1st seal bar unit body which concerns on 3rd Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 2nd seal bar unit body which concerns on 3rd Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal action area of the 3rd seal bar unit body which concerns on 3rd Embodiment of this invention. It is explanatory drawing which shows the seal | sticker action area | region of the seal bar unit body of the seal bar which concerns on 4th Embodiment of this invention, (a) is a front view, (b) is a top view Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 1st seal bar unit body which concerns on 4th Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal | sticker action area | region of the 2nd seal bar unit body which concerns on 4th Embodiment of this invention. Explanatory drawing which shows the seal area | region on the to-be-sealed pouch by the seal action area of the 3rd seal bar unit body which concerns on 4th Embodiment of this invention. In the explanatory view showing various bottom seal shapes, (a) is of the conventional separated type, (b) is of the first embodiment of the present invention, (c) is of the second embodiment of the present invention. , (D) is of the third embodiment of the present invention, and (d) and (e) are of the fourth embodiment of the present invention. Side view showing a conventional integrated bottom seal bar It is a figure which shows the seal action area of the conventional one-piece bottom seal bar, (a) is a front view, (b) is a plan view It is a figure which shows the conventional split type bottom seal bar, (a) is a front view, (b) is a top view. It is a figure which shows the sealing operation by the conventional split type bottom seal bar, (a) is a front view, (b) is a plan view It is a front view which shows the sealing operation | movement by the conventional split type bottom seal bar, and explanatory drawing which shows the state which cuts one side seal part It is a figure which shows the sealing operation | movement by the conventional split type bottom seal bar, It is explanatory drawing which shows the state which has cut the other side seal part, (a) is a front view, (b) is a top view Rear view showing sealing operation with a conventional split bottom seal bar It is sectional drawing which shows each part of the seal | sticker part by which the bottom seal | sticker was carried out in FIG. 20, (a) is DD arrow directional view, (b) is CC arrow directional view, (c) is BB arrow directional view, (D) is an AA arrow view It is a figure showing streaks, (a) is a front view, (b) is an enlarged view

Explanation of symbols

1a, 1b, 1c, 1d seal bar 2 seal bar unit 2a 1st stage seal bar unit 2b 2nd stage seal bar unit 2c 3rd stage seal bar unit 3 seal action area 3a, 3b, 3c
4 Intermittent feed direction 8a, 8b Body 10 Sealed pouch 11a, 11b, 11c Seal position 12a, 12b, 12c, Pitch point 13 Bottom seal area 14 Side seal area 15 Contour 16 Non-seal part 17 Centroid 31 Bag making machine 32 Bottom split seal section 33 Bottom cooling section 34 Side seal section 35 Side cooling section 101a integrated seal bar, 101b separate seal bar 102 seal bar unit body 102a, b, c
103 Sealing area a, b, c
104 Bottom material 105 Air reservoir 111a, 111b, 111c Seal position D1, D2, D3, D4, d gap 106 Side sealer 107 Cutter 108 Sealing area 131 Side seal part 133 Standing pouch 134 Intersection part 135 Line trace

Claims (5)

  A plurality of separate seal bar units that seal the entire bottom seal region of the sealed pouch in cooperation with the respective sealing action areas correspond to the seal positions arranged along the feed direction of the sealed pouch. The one or more seal bar unit bodies of the plurality of seal bar unit bodies have different seal action areas in the feed direction with respect to the other seal bar unit bodies with respect to the bottom seal area. Standing pouch bottom seal bar characterized by   The plurality of seal bar unit bodies include portions of seal action areas having similar shapes, and the plurality of seal bar unit bodies are 1 mm to {(bag making feed pitch)-(seal action of seal bar unit bodies). The width according to claim 1, wherein the gap is arranged with a gap of (region width)} × {(number of seal bar unit bodies) / (number of seal bar unit bodies−1)} (mm). Pouch bottom seal bar   The bottom silver of the standing pouch according to claim 1, wherein the seal positions are arranged at an equal pitch.   One or more seal bar unit bodies of the plurality of seal bar unit bodies are different from other seal bar unit bodies in the width in the feed direction of the seal action area with respect to the bottom seal area in the seal position. The bottom silver of the standing pouch according to claim 1 One or more seal bar unit bodies of the plurality of seal bar unit bodies are different from other seal bar unit bodies in the position in the feed direction of the seal action area with respect to the bottom seal area in the seal position. The bottom silver of the standing pouch according to claim 1

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