JPH0469874B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology belongs to the technical field of manufacturing bags with chucks made of flexible sheets into which candy, chocolate, small cosmetics, etc. can be freely taken out.

<Summary of the gist> The invention of this application is such that a bag with a chuck made of a flexible sheet of a predetermined size made of resin such as vinyl chloride has a recessed groove in an opening provided on one side of the bag, and a recessed groove that engages and disengages from the recessed groove. This invention relates to a method for manufacturing a bag with a chuck, which is provided with a chuck that can be freely operated with a finger, and a manufacturing apparatus used directly in the manufacturing method. , or a form in which a convex strip is previously formed integrally and continuously on the other side, and is unwound from the take-up roll and fed to the former in a predetermined manner, and the guide rollers provided on both sides The convex groove is engaged with the concave groove by a guide such as the chuck to form a cylinder, and a vertical seal provided on the frame against the outer edge of the chuck performs a vertical seal for sealing. Vertical sealing is also performed on the opposite side of the chuck, and then the upper and lower ends (both sides) of the chuck are crushed and sealed by a crushing sealing device on the lower side, and at the final stage, horizontal cutting is performed, and each piece is separated by a cutter. This invention relates to a method and apparatus for producing a bag with a chuck, in which a cutter is used to form a cutting notch for removing the outer edge of the chuck during use.

<Conventional technology> As is well known, as citizens' lives improve and consumer lifestyles become more diverse, the secondary market becomes more active.
Various products are being traded in large quantities, stimulating demand.

There are various products on the secondary market, especially food products, but in terms of the way they are supplied to consumers, they are not only packaged for the purpose of purchasing, but also packaged for the purpose of purchase. Bags with an opening/closing function that could be used later for dispensing over time were developed along with a packaging function during the distribution stage of the product.
A so-called bag with a chuck, which has an opening on one side and a chuck with a recessed groove and a protruding strip that engages and disengages from the recessed groove, is easy to handle and has good sealing and packaging functions. There is a deep-rooted demand for this, and it is becoming more and more widely used.

Then, the applicant developed the so-called four-sided seal bag technology as shown in the invention disclosed in Japanese Patent Publication No. 55-46925 and the invention disclosed in Publication Utility Model Publication No. 58-20487.

<Problems to be Solved by the Invention> The zippered bag 1 made of a flexible sheet such as vinyl chloride will be briefly explained with reference to FIGS. 21 and 22.
At the manufacturing stage, it is divided into two pieces: a bag body 3 with seals 2, 2 on three sides, and a bag body 3 with seals 2, 2 on the same three sides.
2 and a lid body 5 which is integrally provided with a chuck 4 having a concave groove and a protrusion that engages and disengages from the concave groove, and the openings of both 3 and 5 are glued as appropriate with adhesive or the like. The bag body 3 and the lid body 5 are manufactured in two to three steps using the same material, and the chuck 4 is assembled in a separate process for the lid body 5. There was a problem that the process was extremely complicated.

Therefore, the number of man-hours in the manufacturing process is large, and of course the equipment is complex, resulting in higher costs and higher product prices. First, there was a drawback that distribution was obstructed.

Furthermore, since the bag body 3 and the lid body 5 are made in separate processes and integrated in a later process, the strength of the integrated part is not sufficient, and there is a risk of damage during the transportation process, etc. There was also a problem.

<Object of the Invention> The object of the invention of this application is to solve various problems that have been a problem despite the strong demand for bags with zippers based on the above-mentioned prior art, and to solve one of them. In one step with the equipment,
Moreover, by making effective use of the packaging technology that has been developed so far, we have made it possible to stably supply large quantities of products to the market at low cost, and to meet distribution demands on the supply side and consumer side. It is an object of the present invention to provide an excellent method and apparatus for manufacturing zippered bags that can fully satisfy the degree of freedom of use and benefit the field of packaging technology used in the distribution industry.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of the invention of this application, which is based on the scope of the above-mentioned patent claims, is to solve the above-mentioned problem. Concave grooves and protrusions for chucks are continuously integrally molded at predetermined locations on one longitudinal side and the other side of the flexible sheet during manufacture, and the chuck is rolled up into a roll to form a chuck when manufacturing a bag with a chuck. Concave grooves and convex stripes are fed to the former of the bag manufacturing device through guide rollers, etc. so that they are positioned at predetermined positions, and in the former, the concave grooves are fed to the concave grooves of the chuck by a guide such as a guide roller. The bag is engaged, latched, and lowered along the cylinder, and in the lowering process, a horizontal seal is applied to the flexible sheet part on the outer edge of the chuck, and the bag is sealed between handling in the secondary market and reaching the consumer. to prevent it from opening,
In this process, a specified product is introduced through the chute at the top of the former, and furthermore, in the process of descending, the vertical sealing on the opposite side of the chuck is also performed by the vertical sealing device via the cylinder protrusion and guide roller. Therefore, in the vertical sealing process at the chuck part, crush sealing is performed on predetermined areas on both sides of the chuck to facilitate the next stage of horizontal sealing. A predetermined horizontal seal is performed using a cutter provided in the horizontal sealing device, and a cutter provided in the horizontal sealing device performs a horizontal cut to separate each bag piece, and a cutting notch is provided at the outer edge of the chuck to cut and remove the flexible sheet at the outer edge. A technical measure has been taken to make it possible to simultaneously form bags with a zipper and successively manufacture bags with a zipper.

<Example> Next, an example of the invention of this application will be described below with reference to FIGS. 1 to 20. Note that the same parts as in FIGS. 21 and 22 will be described using the same reference numerals.

In the embodiment shown in Figs. 1 to 18, 6 is a zippered bag manufacturing apparatus which forms a part of the gist of the invention of this application, and as shown in Figs. 7 and 8, it is a one unit plant type. The 17th,
This is used to manufacture a four-sided sealed zippered bag 1' shown in FIG.

A bobbin type roll 11 is mounted on a bracket 9 provided on the back of a stand 8 erected on a base 7 via a reel 10, and a flexible sheet 13 made of vinyl chloride is mounted on dancer rollers 12, 12... The guide rollers 12', 1
2″, 12… in a preset attitude,
Former 1 of frame 14 provided on stand 8
5.

A cylinder 17 is provided inside the former 15 and extends downwardly through a ring-shaped minute clearance to a chute 16 connected to the product weighing device from the previous stage.

As shown in FIG. 2, the flexible sheet 13 has a concave groove 18 on one side in the longitudinal direction when the flexible sheet 13 is manufactured, and a concave groove 18 on the other side that engages and disengages from the concave groove 18. A protrusion 19 is integrally formed and is hooked to form a chuck 4, as shown in FIG.

On the rear side of the cylinder 17, as shown in FIG.
Rollers 23, 23 are rotatably supported on both sides of a protrusion 22 integrally provided in the shape of a rib on the back surface of the 7, and vertical seals are provided below the protrusion 22, facing each other from both sides of the protrusion 22. Devices 24, 24 are provided, which project the descending flexible sheet 13 in the longitudinal direction on the back side and roll it by rollers 23, 23 into the 10th, 1st
As shown in FIGS. 1 and 2, pressure is applied to the protrusion 22, and as shown in FIG. 13, a vertical seal 2 is formed under the protrusion 22 by a vertical sealing device 24.

Further, as shown in FIGS. 1, 7, 8, and 14, a pair of guide rollers 26 and 26' are rotatably supported on a bracket 25 provided on the front side of the subframe 20, and are mounted on both sides. The flexible sheet 13, which descends while approaching from the chuck 4, is latched by engaging the concave grooves 18 and the protrusions 19 forming the chuck 4.
Further, below the bracket 27, a pair of vertical sealing devices 28, 28 are provided in the vertical direction.
As shown in FIGS. 7, 8 and 13, the vertical seal 2'
are performed continuously.

Regarding the forced lowering of the flexible sheet 13 in the cylindrical shape around the outer periphery of the cylinder 17,
As shown in Figure 8, a pair of arms 30, 30 are extended from a bracket 29 provided on the stand 8.
Lower driving timing pulleys 31, 31 and upper driven timing pulleys 32, 32
A pair of timing belts 33, 33 are tensioned and engaged to form a pull-down device, which pulls down the cylindrical flexible sheet 13 at a predetermined speed, and draws out and feeds the flexible sheet 13 from the roll 11. ing.

A bracket 34 is provided on the stand 8 below the pull-down device having such a structure, a die 35 is provided inside one side of the bracket 34, and an air cylinder 37 is provided concentrically with the sleeve 36 on the other side. A die 35 is provided at the tip of the rod.
A collapsing sealing device 38 having an ultrasonic sealing mechanism (not shown) and movable back and forth is provided concentrically facing the lateral sealing device 38, which is more than twice the width of the horizontal seal 2 at the ear portion of the chuck 4 of the descending flexible sheet 13. 15th and 16th crushing seals 38' of ultrasonic seals of width
As shown in the figure, this is done for each pitch of the chuck bag 1'.

At the bottom of the bracket 34, a bracket 39 provided on the stand 8 has horizontal sealing devices 40, 40 in the same manner as the conventional packaging device.
are arranged to face each other and to be moved toward and away from each other by means of an air cylinder or the like (not shown) to perform the horizontal sealing 2 of the zippered bag 1'.In addition, in each horizontal sealing device 40, a cutter 41 is provided, which is also a conventional cutter. The chuck 4 of the cutter 41 is provided in the same manner as the embodiment.
A cutting notch 43 is formed at the end of the portion of the flexible sheet 13 on the outer edge of the sheet to prevent opening of the chuck 4 during manufacturing. It is designed to serve as a guide for removing the vertical seal 2' during use by a person.

In the chuck bag manufacturing device 6 configured as described above,
As shown in FIG. 8, a flexible sheet 13 is transferred from a roll 11 mounted on a reel 10 to a dancer roller 12,
12 and guide rollers 12', 12'', 1
2 from the former 15 to the cylinder 17 via...
When the device is started by inserting it into the lower part, the timing belts 33, 33 clamp the flexible sheet 13 with the cylinder 17 and forcibly pull it down, and the flexible sheet 13 unwound from the roll 11 falls into the grooves 18 on both sides of the flexible sheet 13. , the protruding strip 19 is connected to the dancer roller 1
2, 12..., guide rollers 12', 12'', 12
It is regulated to a predetermined standard posture by ..., and is then turned back through the former 15, and the front side is moved to the third, fourth, and fifth positions by guide rollers 26, 26 as guides.
As shown in the figure, a protrusion 19 is formed in the concave groove 18 of the chuck 4.
are close to each other, are latched and engaged, and the vertical seals 28,
28, the flexible sheet 13 on the outer edge of the chuck 4 is vertically sealed 2' and extends downward, and the flexible sheet 13 on the back side is guided by the protrusion 22 and bulges rearward, as shown in FIGS. 9 to 13. As shown in FIG. Then, the air cylinder 37 of the crushing and sealing device 38 moves back and forth at a predetermined timing, working together with the die 35 to close the chuck bag 1'.
The crushed seals 38', 38'... having a width more than twice the width of the horizontal seal 2 are ultrasonically sealed in the middle of the chuck 4 at predetermined pitches to make the same thickness as the flexible sheet 13, and are used in the subsequent process. To ensure that horizontal sealing 2 is performed over the entire width.

Then, the cylindrical flexible sheet 13 formed with the vertical seals 2 and 2' on both ears, which is fed downward, is compressed by the horizontal cylinder devices 40 and 40 when it has descended a set distance from the lower end of the cylinder 17. Then, the horizontal seal 2 is crushed to match the pitch of the seal 38'.

Then, when the horizontal seal 2 is performed, a damper (not shown) of the chute 16 is opened by a control device (not shown), and the weighed products from the previous stage are thrown into the upper part of the horizontal seal 2.

In addition, in this process, the central part of the horizontal seal 2 is cut by the cutters 41, 41, and the chuck 4 is
A cutting notch 43 as shown in FIG. 16 is formed at the upper end of the zippered bag 1' which is cut at the vertical seal 2' on the outer edge of the bag 1', and a conveyor or box waiting on the lower side is formed. Insert chuck bag 1' into the container.

In the bag 1' with a chuck that stores the product to be transported to the next stage, the convex strip 19 fits into the groove 18 of the chuck 4 and is in a sealed state. In addition, since the vertical seal 2' of the flexible sheet 13 on the outer edge of the chuck 4 remains tightly closed, it does not open, and therefore the stored products do not fall out, ensuring reliable distribution. route to the consumer, at which point the consumer removes the longitudinal seal 2' of the flexible sheet 13 at the outer edge of the chuck 4 by cutting through the cutting notch 43 during use and then removes the chuck 4 by normal finger operations. The opening can be opened and closed freely to take out the goods stored inside as needed, and the opening can be closed again as desired.

Moreover, in the embodiment shown in FIGS. 19 and 20,
The opposite edge of the chuck 4 is a folded part of the flexible sheet 13, so that the 17th and 18th
The vertical seal 2 on the opposite side of the chuck 4 shown in the figure is not applied, so the manufacturing apparatus in this embodiment includes the protrusion 22, guide rollers 23, 23, and vertical seal device 24 shown in FIG. This is a device mode in which there is no

Therefore, in the case of chuck bag 1', the implementation side,
And only the horizontal seals 2, 2 on both sides thereof are to be worked on.

It goes without saying that the embodiments of the invention of this application are not limited to the above-mentioned embodiments. For example, the concave grooves and protrusions of the chuck may be formed in a strip shape separately from the flexible sheet and applied with adhesive as appropriate. Various methods can be adopted, such as setting the flexible sheet in the manufacturing apparatus via a roller, etc., and attaching it to both edges of the flexible sheet as appropriate when the roll is fed out.

It goes without saying that the flexible sheet used may also be a mesh sheet.

It goes without saying that the products to be stored can be flexibly applied not only to foods such as candy and tyokolate, but also to block-shaped or granular products such as pharmaceutical tablets and cosmetics.

<Effect of the invention> As described above, according to the invention of this application, the second
Bags with chucks made of flexible sheets such as vinyl chloride, which were previously manufactured through multiple processes as shown in Figures 1 and 22, can now be manufactured in one process using one device, resulting in significantly lower costs. Since it is a one-step process, efficiency is increased, product reliability is increased, and the number of man-hours is small, so it is supplied to the distribution market in a stable state in terms of quantity and cost, which allows for stable continuous mass production. It has excellent effects in that it is fully functional not only in distribution processing but also in providing the usability desired by the user.

Since mass production can be carried out at low cost, product accuracy becomes extremely uniform, which has the excellent effect of increasing reliability and usability not only for the distribution market but also for consumers. is played.

[Brief explanation of drawings]

1 to 20 are explanatory diagrams of embodiments of the invention of this application, and FIG. 1 is an enlarged perspective view of main parts of one embodiment;
Figure 2 is a sectional view of the seat, Figures 3, 4, 5, and 6 are sectional views of the chuck engagement process, Figure 7 is a front view of the manufacturing equipment, Figure 8 is a side view, and Figure 9 is the back. Partial cross-sectional side view of the vertical seal part of No. 10, 11, 1
Figures 2 and 13 are process cross-sectional views of the chuck and back vertical seal of the flexible sheet, Figure 14 is a partial cross-sectional view of the connection of the guide roller to the chuck, Figure 15 is a process side view of the vertical seal and horizontal seal, and Figure 16 is a process cross-sectional view of the chuck and back vertical seal. A side view of the cutting notch, FIG. 17 is a front view of the zippered bag, FIG. 18 is a sectional view of the same, FIG. 19 is a front view of a zippered bag of another embodiment, and FIG. 20 is a sectional view of the same. FIG. 21 is a structural perspective view of a bag with a zipper based on the prior art, and FIG. 22 is a sectional view thereof. 38...Crushing seal device, 41...Cutter, 13...Flexible sheet, 18...Concave groove, 19...
...Convex stripes, 4...chuck, 1'...bag with chuck,
15...former, 43...cutting notch, 3
8'...Crushing seal, 40...Horizontal sealing device,
28...Vertical sealing device.

Claims (1)

[Scope of Claims] 1. A method for manufacturing a bag with a chuck, in which an opening formed in the upper part of a sealed bag made of a flexible sheet made of resin is provided with a groove and a chuck with a protruding strip that engages and disengages from the groove, A flexible sheet in which the grooves are integrally formed on one side along the longitudinal direction and the protrusions are integrally formed on the other side is continuously fed to the former,
A bag with a chuck, characterized in that the chuck is formed into a cylindrical shape by engaging a concave groove with a convex strip, and then seals at least three sides including the outer edge of the chuck, and cuts the chuck crosswise. manufacturing method. 2. A method for producing a bag with a chuck according to claim 1, characterized in that said transverse cutting is carried out together with the formation of a cutting notch from which a seal on the outer edge of said chuck is later removed. 3. The method of manufacturing a bag with a chuck according to claim 1, characterized in that, prior to said sealing, the end of the chuck is crushed and sealed. 4. The method of manufacturing a bag with chuck according to claim 1, wherein the grooves and the protrusions of the chuck are integrally formed on a flexible sheet in advance. 5. The method of manufacturing a bag with a chuck according to claim 1, wherein the grooves and the protrusions of the chuck are formed continuously. 6. At least one of the grooves and the protrusions of the chuck is formed separately from the flexible sheet and attached to the flexible sheet before being fed to the former. A method for producing a bag with a chuck according to scope 1. 7. In an apparatus for manufacturing a bag with a chuck, in which an opening formed in the upper part of a sealed bag made of a flexible resin sheet is provided with a groove and a chuck with a protruding strip that engages and disengages with the groove, A guide for engaging the concave groove and the protrusion of the chuck is provided at the lower part, and a vertical sealing device for the outer edge of the chuck of the flexible sheet is provided between the guide and a horizontal sealing device having a cutter at the lower part. A manufacturing device for bags with a zipper, which is characterized by: 8. The chuck bag manufacturing apparatus according to claim 7, wherein the vertical sealing device is provided with a crushing sealing device for the chuck end. 9. The chuck bag manufacturing apparatus according to claim 7, wherein the cutter of the horizontal sealing device is capable of forming a cutting notch for removing the flexible sheet at the outer edge of the chuck. 10. The zipper bag manufacturing apparatus according to claim 7, wherein the guide is formed as a roller. 11. The method of manufacturing a chuck bag according to claim 7, wherein the guide is formed into a shoe.