JP2008056345A - Bag with fastener and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag with a fastener which prevents the fastener from being inadequately welded and is capable of storing articles without opening the fastener, and also to provide its manufacturing method. <P>SOLUTION: The bag A1 with the fastener is formed of a film member and is provided with a first panel 10 and a second panel 20 which are superposed with each other. The first panel 10 and the second panel 20 are connected to form a bag shape by connecting the side parts thereof with each other and the bottom parts 5 thereof with each other and the upper part of the bag is openable/closable by the fastener 3. The first panel 10 is provided with a main body 11 connected with the second panel 20 and a folding part 12 which is interposed between the main body 11 and the second panel 20 and extends from the upper part 13 of the main body 11 to the bottom part 5 thereof. A male fastener 3a is formed at the folding part 12 and a female fastener 3b to engage with the male fastener 3a is formed at the main body 11. A cutting open means 4 is formed at a position higher than a position in which the female fastener 3b is formed in the main body 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an openable / closable bag having a fastener and a method for manufacturing the same.

  A bag having a fastener at the opening end is widely used as a bag for storing contents in a relatively high airtight state without leaking the contents. This fastener has a structure which shields the said opening end, for example, when a part of male fastener is added to a female fastener. In order to manufacture such a bag with a fastener, a method of appropriately sealing and cutting a film in which a male fastener or a female fastener is integrally formed, and after joining the male fastener and the female fastener to the film, There are sealing and cutting methods.

  FIG. 27 shows a cross-sectional view of an example of a fastener-attached bag manufactured by the latter method (see, for example, Patent Document 1). 27 includes a first panel 91 having a male fastener 93a and a second panel 92 having a female fastener 93b so that the male fastener 93a and the female fastener 93b are fitted to each other. They are formed by heat sealing or ultrasonic sealing along their bottom and side edges. The bag with fastener X includes an opening edge 96 in which the first panel 91 and the second panel 92 are not sealed, and the article is passed through the opening edge 96 by separating the male fastener 93a and the female fastener 93b. Can be taken in and out. Such a bag X with a fastener seals a predetermined position after affixing the male fastener 93a to one of a pair of facing film members extending along the flow direction of the manufacturing operation and the female fastener 93b to the other, It is manufactured by cutting the film member at a predetermined interval.

  However, in such a bag-attached bag X, the male fastener 93a and the female fastener 93b are fitted in the manufacturing process, so that the male fastener 93a and the female fastener 93b Needed to be separated. For this reason, for example, it is necessary to provide fastener-separating equipment on the production line, which causes a complicated manufacturing process. In general, when the male fastener 93a and the female fastener 93b are attached to the film, both of them are heated and welded. If the heating is too large at the time of welding, the male fastener 93a and the female fastener 93a. 93b may be unduly welded. On the contrary, if the heating is too small, the male fastener 93a and the female fastener 93b are not sufficiently welded to the film member. In order to avoid such problems due to excessive or insufficient heating, it has been forced to closely control the heating amount and the feeding speed of the film member.

JP-A-11-28771

  The present invention has been conceived under the circumstances described above, and is a bag with a fastener that can be filled with the contents without having to bother to open the fastener and can be appropriately attached to the film member. It is an issue to provide.

  In order to solve the above problems, the present invention employs the following technical means.

  The bag with a fastener according to the first aspect of the present invention includes a first panel and a second panel which are formed of a film member and are overlapped with each other, and the first panel and the second panel are arranged between their side portions. A bag with a fastener in which bottom portions are connected to form a bag, and the upper portion can be opened and closed by a fastener, wherein the first panel includes a main body connected to the second panel, and the main body And a folded portion extending from the upper portion of the main body portion toward the bottom portion, and the folded portion is provided with a male fastener or a female fastener, and the main body portion. Is provided with a female fastener or a male fastener that fits with the male fastener or the female fastener provided on the inner surface of the folded portion, and the upper portion in the main body portion. The higher than sites female fastener or male fastener is provided, characterized in that it is cut open means formed. The slitting means can be formed, for example, by forming a perforation on the film member itself or by attaching a cut tape to the film member.

  According to such a configuration, since the inner surface of the second panel and the outer surface of the folded portion are not bonded, the inner surface of the second panel and the outer surface of the second panel can be fitted even when the male fastener and the female fastener are still fitted. Articles can be taken in and out through the outer surface of the folded portion. That is, in this bag with a fastener, it is not necessary to separate the male fastener and the female fastener when filling an article therein, so that the filling operation can be performed efficiently. Further, since the male fastener and the female fastener are attached to the inner surface of the folded portion, when the article is filled inside, the fitting portion between the male fastener and the female fastener is erroneously filled. There is no end to it.

  In a preferred embodiment, the folded portion is the same film member as the main body portion, and is formed by bending the leading end of the film member toward the bottom portion. According to such a structure, the said 1st panel and the said folding | returning part can be manufactured from one film member, and there are few film members to prepare and it is economical.

  In another preferred embodiment, contrary to the above case, the folded portion is formed by bonding a film member different from the main body portion at the upper portion thereof. According to such a configuration, for example, the first panel and the folded portion can be formed of laminate films having different structures.

  Moreover, in preferable embodiment, the said main-body part and the said folding | returning part are welded over the predetermined | prescribed vertical width in those upper parts. According to such a structure, it can prevent that the said folding | turning part leaves | separates from the said 1st panel and narrows the said filling port.

  In a preferred embodiment, the bottoms of the first panel and the second panel are joined by folding one film member. According to such a configuration, the first panel and the second panel can be formed from a single film member, which is economical.

  Moreover, in preferable embodiment, the said 1st panel and the said 2nd panel are welded over the predetermined | prescribed vertical width in those bottom parts. According to such a configuration, the bottom portion of the fastener-attached bag has a predetermined thickness, and the bottom is not easily broken.

  Further, in a preferred embodiment, the filling port is sealed after the contents are filled from the filling port formed by the inner surface of the second panel and the outer surface of the folded portion. According to such a configuration, the fastener-attached bag is partially opened by the opening means, the male fastener and the female fastener are exposed, and the male fastener and the female fastener are fitted and separated. It becomes a bag that can be opened and closed freely.

  The manufacturing method of the bag with a fastener concerning the 2nd side of the present invention was overlapped mutually using the film member which has the 1st end and the 2nd end of the width direction, and extends in the longitudinal direction by predetermined width. A bag with a fastener including a first panel and a second panel, wherein the first panel and the second panel are formed into a bag shape by connecting side portions and bottom portions thereof, and the upper portion can be opened and closed by the fastener. And a male fastener and a female fastener extending in the longitudinal direction at a predetermined interval in the width direction are attached to the portion near the first end, and a predetermined distance between the male fastener and the female fastener is attached. A first step of forming a slitting means extending in the longitudinal direction at the part; a body part including the slitting means by folding back the part near the first end; and the body part connected to the body part; A second step of forming a folded portion and fitting the male fastener and the female fastener together, and folding the portion closer to the second end portion so as to overlap the folded portion, the first end side The first panel and the second panel on the second end side are overlapped with each other while forming a bottom, and the first panel and the second panel are arranged at regular intervals in the longitudinal direction. And a fourth step of joining together along the width direction.

  According to such a manufacturing method, even if the male fastener and the female fastener are fitted, a bag with a fastener having a filling opening opened on one side is efficiently manufactured from a single film member. be able to. Further, when the male fastener and the female fastener are attached to the film member, even if the heating amount is increased for attachment, the male fastener and the female fastener are not unduly welded. Therefore, according to such a manufacturing method, it is possible to reduce the defective rate of the bag.

  In a preferred embodiment, after the second step, the step of thermally welding the folded portion to the main body portion in a predetermined region between the connecting portion of the main body portion and the folded portion and the slitting means. I do. Moreover, you may perform the process of heat-welding the said 1st panel and the said 2nd panel mutually in the vicinity of the said bottom part after the said 3rd process. According to such a manufacturing method, the shape of the manufactured bag with a fastener is not easily deformed, and it becomes easy to perform a manufacturing operation, a product transportation operation, and the like. In addition, the shape of the filling port is less likely to collapse, which is advantageous during filling operations.

  In a preferred embodiment, the fourth step includes an operation of cutting along a portion where the first panel and the second panel are joined. According to such a manufacturing method, it is possible to continuously manufacture a plurality of fastener-attached bags provided with the filling port from one film material.

  Furthermore, in a preferred embodiment, after the fourth step, the contents are filled from the filling port formed by the end of the folded portion and the end of the second panel, and the filling port is sealed. Perform the process. According to such a manufacturing method, the contents can be filled inside while the male fastener and the female fastener are fitted, and the manufacturing process can be simplified.

  The manufacturing method of the fastener-attached bag according to the third aspect of the present invention uses a plurality of film members having a predetermined width and extending in a longitudinal direction perpendicular to the width direction, and the first panel and the second panel overlapped with each other. The first panel and the second panel have a bag-like shape in which the side portions and the bottom portion are connected to each other, and the upper portion can be opened and closed by a fastener composed of a male fastener and a female fastener. The main body portion connected to the second panel, the folded portion extending from the upper portion of the main body portion toward the bottom portion, and the main body portion and the folded portion are formed. The male fastener and the female fastener, the upper portion of the main body, and the slitting means formed between the male fastener and the female fastener bonded to the main body. A first step of forming one panel, a second step of overlaying the first panel and the second panel so as to sandwich the folded portion, a third step of forming the bottom, and a constant interval in the longitudinal direction Each includes a fourth step of joining the first panel and the second panel to each other by a heat welding portion along the width direction. The first step is a step of forming the slitting means in a main body panel that is one of the plurality of film members, and one of the plurality of film members on the upper portion of the main body panel. An additional panel shorter than the main body panel, a step of overlapping the main body panel such that one end in the width direction is in contact with the top of the main body panel and the other end is directed to the bottom; The additional panel is bonded at a predetermined width along the width direction from the upper part thereof, thereby forming the main body portion and the folded portion, and forming the fastener. . The main panel and the additional panel are preferably bonded by heat welding.

  According to such a manufacturing method, for example, the main body panel and the additional panel can be formed using laminate films having different layer structures. That is, it is possible to select the material of the main body panel and the additional panel so that the surface to be thermally welded is formed of a film that is easily melted. Therefore, also with this manufacturing method, the fastener-attached bag according to the first aspect of the present invention can be manufactured smoothly.

  In a preferred embodiment, the step of forming the fastener is performed before the body panel and the additional panel are overlapped, and one of the male fastener and the female fastener is bonded to the body panel; Bonding a female fastener or a male fastener fitted to the male fastener or female fastener bonded to the main body panel to a surface of the additional panel facing the main body panel.

  According to such a manufacturing method, when the male fastener and the female fastener are attached to the main body panel or the additional panel, even if the heating amount is increased for attachment, the male fastener and the female fastener are It will not be unduly welded. Therefore, according to such a manufacturing method, it is possible to reduce the defective rate of the bag.

  In another preferred embodiment, the step of forming the fastener is from the end of the step of overlapping the main body panel and the additional panel to the end of the step of forming the main body portion and the folded portion. The male fastener and the female fastener in a fitted state are inserted between the main body portion and the folded portion, and one of the male fastener and the female fastener is inserted into the main body portion. And a step of bonding a female fastener or a male fastener that fits the male fastener or the female fastener bonded to the main body portion to the inner surface of the folded portion.

  According to such a manufacturing method, when the main body panel and the additional panel are thermally welded, the male fastener and the female fastener can be thermally welded to the main body panel or the additional panel, respectively. It can be simplified.

  In still another preferred embodiment, the step of forming the fastener is performed after the step of forming the main body portion and the folded portion, and the male fastener and the female fastener in a fitted state, A female inserted between the main body portion and the folded portion, one of the male fastener and the female fastener bonded to the main body portion, and fitted to the male fastener or female fastener bonded to the main body portion. Bonding a fastener or a male fastener to the inner surface of the folded portion.

  According to such a manufacturing method, since the main body portion and the folded portion are fixed, there is no possibility that the main body portion and the folded portion are displaced when the male fastener and the female fastener are bonded.

  In a preferred embodiment, the third step is a step in which the first panel and the second panel are bonded to each other with a predetermined width along the width direction from the bottom using, for example, heat welding. including. According to such a manufacturing method, it is possible to form a bottom portion having a sufficient thickness and not easily torn.

  In a preferred embodiment, the fourth step includes an operation of cutting along a portion where the first panel and the second panel are joined. According to such a manufacturing method, it is possible to continuously manufacture a plurality of fastener-attached bags provided with the filling port from two or three film materials.

  In a preferred embodiment, after the fourth step, the contents are filled from the filling port formed by the end of the folded portion and the end of the second panel, and the filling port is sealed. Perform the process. According to such a manufacturing method, the contents can be filled inside while the male fastener and the female fastener are fitted, and the manufacturing process can be simplified.

  The manufacturing method of the bag with a fastener concerning the 4th side of the present invention has the 1st end and the 2nd end of the width direction, and extends in the longitudinal direction by predetermined width, and the above-mentioned film member The first panel and the second panel are overlapped with each other using an additional panel made of a film having a narrow predetermined width and extending in the longitudinal direction, and the first panel and the second panel have a side portion and a bottom portion. This is a method of manufacturing a bag with a fastener that is connected and formed into a bag shape and whose upper part can be opened and closed by a fastener, and includes the following first to third steps. In the first step, the film member is bent so that the first end portion and the second end portion overlap each other, the bent portion is used as the bottom portion, and the first end portion to the bottom portion of the film member is used. A portion from the second end of the film member to the bottom portion as the second panel, and a predetermined portion near the first end of the main body. Forming a male fastener or a female fastener extending in the longitudinal direction at a position, and forming a female fastener or a male fastener that fits with the male fastener or the female fastener formed on the main body portion on the additional panel. And a step of forming a slitting means extending along the longitudinal direction between the position where the male fastener or the female fastener is to be formed and the first end portion.In the second step, the first panel having the folded portion is formed by attaching the additional panel to the first support portion of the main body. In the third step, the first panel and the second panel are joined to each other along the width direction at regular intervals in the longitudinal direction.

  According to such a manufacturing method, the said folding | returning part and the said main-body part can be formed with a separate film member, and the effect similar to the manufacturing method of the bag with a fastener which concerns on the 3rd side surface of this invention can be acquired. . Furthermore, the kind of film member prepared at the time of manufacture can be reduced. Moreover, since the formation of the bottom portion can be performed in the same manner as the method for manufacturing the bag with fastener according to the second aspect of the present invention, a part of the bottom portion is welded, and the bottom of the bag with fastener is thickened. can do. Conversely, the bottom may be formed so that the bottom of the fastener-attached bag is wide.

  In a preferred embodiment, in the step of bending the film member, the additional panel and the film member are overlapped so that one end of the additional panel overlaps the second end of the film member. The film member is folded so as to sandwich the panel. If it does in this way, the bending operation | work of the said film member and the position alignment of the said additional panel can be performed simultaneously by moving the said 1st end part, without moving the said 2nd end part. For this reason, it can manufacture smoothly.

  Further, in a preferred embodiment, in the step of bending the film member, the additional panel and the film member are overlapped so that one end of the additional panel overlaps the first end of the film member. The film member is folded so as to sandwich the additional panel. In this case, the film member can be bent and the additional panel can be aligned at the same time by moving the second end without moving the first end. For this reason, it can manufacture smoothly.

  In another preferred embodiment, a step of forming a male fastener or a female fastener extending along the longitudinal direction at a predetermined position near the first end of the main body portion, and forming the main body portion on the main body portion. The step of forming the female fastener or the male fastener fitted to the male fastener or the female fastener on the additional panel is performed simultaneously between the step of bending the film member and the second step. If it does in this way, the above-mentioned male fastener and the above-mentioned female fastener can be attached simultaneously, and a manufacturing process is simplified.

  Furthermore, in a preferred embodiment, the third step includes an operation of cutting along a portion where the first panel and the second panel are joined. If it does in this way, it is possible to manufacture continuously several bags with a fastener provided with the said filling port from the said film member and the said additional panel.

  In a preferred embodiment, after the third step, the contents are filled from the filling port formed by the end of the folded portion and the end of the second panel, and the filling port is sealed. Perform the process. According to such a manufacturing method, the contents can be filled inside while the male fastener and the female fastener are fitted, and the manufacturing process can be simplified.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the drawings.

  1st Embodiment of the bag with a fastener which concerns on the 1st side surface of this invention is shown in FIGS. 1-3. 1 is a front view of a bag A1 with a fastener, and FIG. 2 is a sectional view taken along the line II-II in FIG. According to FIGS. 1 and 2, the fastener-attached bag A <b> 1 includes a first panel 10, a second panel 20, a fastener 3, a perforation 4, a bottom 5, and a filling port 6. Yes. FIG. 3 shows a state where the filling port 6 is sealed and the perforation 4 is cut open.

  The first panel 10 is, for example, one of opposing side surfaces formed by bending a film member such as a plastic film, and includes a main body portion 11 and a folded portion 12. The main body 11 is provided with an upper end 13 in the upper part in FIG. The folded portion 12 is a portion that extends from the main body portion 11 and is folded inside the bag A1 with fastener toward the bottom portion 5 at the upper end portion 13. The main body part 11 and the folded part 12 are bonded in the vicinity of the upper end part 13 to form an adhesive part 7 a, thereby preventing the folded part 12 from being separated from the main body part 11.

  The second panel 20 is the other of the opposing side surfaces formed by bending the film member. The second panel 20 includes an upper end 23 in the upper part of FIG. 1, a lower end 24 in the lower part, and side parts 25 on the left and right. The side portion 25 is bonded to the opposite side portion 15 by welding, for example, and seals the left and right sides of the fastener-attached bag A1 in FIG.

  As shown in FIG. 2, the fastener 3 is composed of a male fastener 3a and a female fastener 3b that are fitted together. The male fastener 3 a is formed at a position closer to the bottom part 5 than the adhesive part 7 a on the inner surface side of the folded part 12, while the female fastener 3 b is formed at a position closer to the bottom part 5 than the adhesive part 7 a on the inner surface side of the main body part 11. Has been.

  The perforation 4 is formed between the female fastener 3b of the main body 11 and the end of the bonding portion 7a near the bottom 5, and the main body 11 can be cut up and down at the perforation 4.

  The bottom portion 5 is formed as a bent portion between the first panel 10 and the second panel 20. In the bottom portion 5, the lower end portion 14 and the lower end portion 24 are bonded to form an adhesive portion 7 b, and the bottom portion 5 is reinforced. For this reason, it becomes difficult to happen that the bottom part 5 is torn and the contents of the fastener-attached bag A1 leak outside.

  The filling port 6 is an open portion formed by being surrounded by the upper end on the outer surface side of the folded portion 12 and the inner surface side of the upper end portion 23 of the second panel 20. When the filling port 6 is sealed at the bonding portion 7c as shown in FIG. 3, the fastener-attached bag A1 can be sealed.

  The effect | action of such a bag A1 with a fastener is demonstrated below.

  In the bag A1 with a fastener having the above-described configuration, even when the fastener 3 is closed, the article can be stored in the bag through the filling port 6, and the bag can be sealed by closing the filling port 6. . Further, when the perforation 4 is cut open, the folded portion 12 is separated from the main body portion 11 and is integrated with the second panel 20 as shown in FIG. For this reason, when fastener 3 is opened, it will be in the state which can take out the thing inside bag A1 with a fastener from between male fastener 3a and female fastener 3b.

  Moreover, in the bag A1 with a fastener, since the fastener 3 is attached to the inside of the main body 11 and the folded portion 12, the article is not caught on the fastener 3 when the article is stored from the filling port 6.

  The manufacturing method of such a bag A1 with a fastener is demonstrated below with reference to FIGS.

  The fastener-attached bag A1 is manufactured by applying the following operation to the film member 8 moving at a predetermined speed along the longitudinal direction.

  First, as shown in FIG. 4, the male fastener 3 a and the female fastener 3 b are attached to the film member 8 to form the perforation 4. In the film member 8, the left-right direction in FIG. 4 is the width direction, and the direction perpendicular to the paper surface is the longitudinal direction. The male fastener 3 a, the female fastener 3 b, and the perforation 4 are formed so as to extend in parallel to each other along the longitudinal direction of the film member 8. The male fastener 3a is welded closer to the left end of the film member 8, and the female fastener 3b is welded closer to the center. The perforation 4 is formed at a position near the female fastener 3b between the male fastener 3a and the female fastener 3b. The operation of attaching the male fastener 3a and the female fastener 3b to the film member 8 may be performed by ultrasonic sealing or the like.

  Next, as shown in FIG. 5, the film member 8 is bent between the perforation 4 and the male fastener 3a to form the upper end portion 13, and the longer film member 8 bent at the upper end portion 13 is the main body. The shorter part is referred to as a folded part 12. Note that the male fastener 3a and the female fastener 3b are fitted to each other during the bending. Further, the main body portion 11 and the folded portion 12 are bonded to each other in a predetermined range on the left side in the drawing from the perforation 4 to form an adhesive portion 7a. The folded portion 12 is not separated from the main body portion 11 by the bonding portion 7a, and the subsequent steps can be performed stably. The bonding portion 7a can be formed by using an adhesive, sewing, ultrasonic sealing, or heat welding.

  Next, as shown in FIG. 6, the film member 8 is bent near the center in the width direction of the main body portion 11 to form the bottom portion 5, and the film member 8 is bound to the first panel 10 and the second panel at the bottom portion 5. It is divided into 20. As a result, the main body portion 11 extends from the upper end portion 13 to the bottom portion 5, and the folded portion beyond the bottom portion 5 becomes the second panel 20. In this bending operation, the second panel 20 is bent such that the second panel 20 faces the main body 11 with the folded portion 12 therebetween, and the upper end portion 23 and the upper end portion 13 overlap each other.

  Next, as shown in FIG. 7, seal portions 8 a extending in the width direction of the film member 8 are formed at predetermined intervals along the longitudinal direction of the film member 8. The seal portion 8a is formed, for example, by heating from both sides of the first panel 10 and the second panel 20 with a pair of opposed heaters extending in the width direction of the film member 8 and welding them together.

  Next, as shown in FIG. 8, a predetermined width of the bottom portion 5 is adhered to form an adhesive portion 7b. The bonding portion 7b can be formed by using an adhesive, stitching, ultrasonic sealing, or heat welding. For example, when performing by heat welding, it heats from the both sides of the 1st panel 10 and the 2nd panel 20 with a pair of opposing heaters extended along the longitudinal direction of the film member 8, and is performed by welding both. By forming the adhesive portion 7b, it is possible to prevent the bottom portion 5 from being thinned.

  Next, articles are stored from the filling port 6 in the respective bags separated by the seal portion 8a. This operation can be efficiently performed by sequentially filling each bag body while moving the connected bag bodies in the longitudinal direction of the film member 8. Thereafter, as shown in FIG. 9, the filling port 6 is bonded to form an adhesive portion 7 c, and each bag is sealed. The bonded portion 7c is formed by using an adhesive, stitching, ultrasonic sealing, or heat welding.

  Next, in each of a plurality of seal portions 8 a formed along the longitudinal direction of the film member 8, the film member 8 is cut along the width direction. The cut seal part 8a is the side parts 15 and 25 in the fastener-attached bag A1. Thereby, a plurality of bags A1 with fasteners can be manufactured continuously. In addition, after storing the bag A1 with a fastener from the film member 8, the storage of the article and the formation of the adhesive portion 7c may be performed.

  According to such a manufacturing method, the male fastener 3a and the female fastener 3b can be welded to the film member 8 separately. Thereby, even if heating becomes too large in the welding operation, there is no possibility that the male fastener 3a and the female fastener 3b are unduly welded. Therefore, it is possible to suppress a bonding failure between the film member 8, the male fastener 3a, and the female fastener 3b. That is, even if the heating amount in the welding operation is made relatively large and the moving speed of the film member 8 is increased, it becomes difficult to cause remarkable bonding failure, so that the manufacturing speed can be improved. Further, the article can be stored while the fastener 3 is closed through the filling port 6. For this reason, it is not necessary to open the fastener 3 in a manufacturing process, and it becomes possible to simplify a manufacturing apparatus and manufacturing work more.

  Further, since the fastener 3 is formed inside the folded-back portion 12, when the article is stored from the filling port 6, the article is not caught on the fastener 3, and the storing operation can be performed more smoothly.

  FIG. 10 shows a second embodiment of the fastener-attached bag according to the first aspect of the present invention. FIG. 10 is a front view of the fastener-attached bag A2. This bag A2 with a fastener is one in which a filling hole 6 of the bag A1 with a fastener already described with reference to FIGS. 1 to 3 is sealed, and a bonding hole 7c is formed, and a hanging hole 16 is formed. is there. The hanging hole 16 is formed in a range where the bonding portion 7 a and the bonding portion 7 c overlap with each other, and is a hole penetrating from the first panel 10 to the second panel 20. By hooking the suspension hole 16 on a hook or the like, for example, the fastener-attached bag A2 can be suspended and sold at a store.

  Such a bag A2 with a fastener can be manufactured by adding a step of opening the hanging hole 16 after the step of forming the bonding portion 7c of the manufacturing step of the bag A1 with a fastener. In order to easily form the suspension hole 16, it is preferable that the bonding portion 7a and the bonding portion 7b are formed by heat welding.

  A third embodiment of a fastener-attached bag according to the first aspect of the present invention is shown in FIGS. 11 is a front view of the fastener-attached bag A3, and FIG. 12 is a cross-sectional view taken along line XII-XII in FIG. This fastener-attached bag A3 is obtained by forming a cut tape 40 in place of the perforation 4 in the fastener-attached bag A1. Also, as shown in FIG. 12, unlike the bag A1 with fastener, the bag A3 with fastener includes a foldable bottom 5 between the lower end 14 of the main body 11 and the lower end 24 of the second panel 20. ing. The bottom portion 5 is folded in FIG. 12, and the opened state is shown in FIG. The other main configuration of the fastener-attached bag A3 is the same as that of the fastener-attached bag A1.

  The cut tape 40 includes a grip 41 and is configured to be pulled away from the main body 11 by holding the grip 41 and pulling it in the right direction in FIG. When the cut tape 40 is pulled away from the main body 11, the portion where the cut tape 40 was present becomes a cut, and the fastener 3 faces the outside. Further, by opening the fastener 3, the article inside the bag can be taken out.

  In the bag A3 with fastener, the lower end portions 14 and 24 are formed by welding the folded portions at the lower end of the main body portion 11 and the second panel 20, respectively. The bottom 5 formed between the lower ends 14 and 24 is folded as shown in FIG. 12 when nothing is put in the bag, but when the article is stored in the bag. Is in a spread state as shown in FIG. For this reason, bag A3 with a fastener can make the volume inside a bag larger than bags A1 and A2 with a fastener.

  Such a bag A3 with a fastener is formed by forming the cut tape 40 instead of forming the perforation 4 in the manufacturing process of the bag A1 with a fastener, and bending the film member 8 to form the bottom 5, so that the bottom 5 It can be manufactured by further bending the film member 8 so as to enter the inner side of the fastener-attached bag A3.

  FIG. 14 shows a fourth embodiment of a fastener-attached bag according to the first aspect of the present invention. FIG. 14 is a cross-sectional view of the fastener-attached bag A4. In this bag A4 with a fastener, the main body 11 and the folded portion 12 constituting the first panel 10 are each formed of a laminate film having a different structure. The second panel 20 is formed of a laminate film having the same configuration as that of the main body 11. Furthermore, the bonding portions 7a and 7b are formed by heat welding. The shape of the bag A4 with a fastener when viewed from the front is the same as, for example, the bag A1 or A2 with a fastener, and the other configurations are the same as the bag A1 with a fastener. In addition, let the upper direction in FIG. 14 be the upper part side of the bag A4 with a fastener, and let the downward | lower direction be a bottom part side.

  The first panel 10 includes a main body portion 11 and a folded portion 12 welded to the upper end portion 13 of the main body portion 11. In addition, in this bag A4 with a fastener, the upper end part 13 shall point out the predetermined range of the upper part side of the main-body part 11. FIG. Similarly to the bag A1 with fastener, the female fastener 3b is welded to the surface of the main body portion 11 facing the folded portion 12, and the male fastener 3a is welded to the surface of the folded portion 12 facing the main body portion 11. A perforation 4 is formed between the female fastener 3 b and the upper end 13 of the main body 11. Instead of the perforation 4, the cut tape 40 used in the bag A3 with a fastener may be used.

  The main body 11 is formed of a laminate film composed of two layers, a PE layer 17 made of polyethylene (hereinafter referred to as PE) and a PP layer 18 made of polypropylene (hereinafter referred to as PP). The PE layer 17 is located on the inner surface side of the bag A4 with fastener, and the PE layer 18 is located on the outer surface side of the bag A4 with fastener. Therefore, the surface on which heat welding is performed in any of the bonding portion 7a between the main body portion 11 and the folded portion 12, the bonding portion 7b between the main body portion 11 and the second panel 20, and the portion where the female fastener 3b is welded. Is the PE layer 17.

  The folded portion 12 is formed of a laminate film composed of PE layers 12a and 12c made of polyethylene and a PP layer 12b made of polypropylene sandwiched between them. In the direction perpendicular to the paper surface of FIG. 14, the folded portion 12 has the same length as the main body portion 11 and the second panel 20. In the folded portion 12, the PE layer 12 a is located so as to face the inner surface side of the main body portion 11, and the PE layer 12 c is located so as to face the inner surface side of the second panel 20. Therefore, in the bonding portion 7a between the main body portion 11 and the folded portion 12, the PE layer 12a is welded to the main body portion 11, and the PE layer 12a is also thermally bonded to the male fastener 3a. Further, the PE layer 12c is also welded to the second panel 20 at the bonding portion between the folded portion 12 and the second panel 20 when the filling port 6 is sealed.

  The second panel 20 is a laminate film composed of the PE layer 27 and the PE layer 28 and is disposed so as to overlap the first panel 10. The PE layer 27 is made of polyethylene and is located on the inner surface side of the fastener-attached bag A4, and the PP layer 28 is made of polypropylene and is located on the outer surface side of the bag. The second panel 20 is welded to the first panel 10 and both side surfaces thereof, similarly to the fastener-attached bags A1, A2. Further, the lower end portion 24 of the second panel 20 is welded to the lower end portion 14 of the main body portion 11 at the bonding portion 7b. For this reason, the bag A4 with a fastener has a side surface and a bottom portion 5 sealed to form a bag shape.

  Such a bag A4 with a fastener can store articles into the bag from the filling port 6 even when the fastener 3 is closed, like the bags A1, A2 and A3 with a fastener. Further, the outer side of the fastener-attached bag A4 is covered with PP layers 18 and 28 made of polypropylene. In general, polypropylene has excellent properties such as moisture resistance, resistance to friction, and is difficult to dissolve by heat, and is excellent as a packaging material, but is not suitable for the welding process because it is resistant to heat. On the other hand, the inner side is covered with PE layers 17, 27, 12 a and 12 c made of polyethylene, and the surfaces where heat welding is performed in the bonding portions 7 a and 7 b are all PE layers. Furthermore, the surface on which the thermal welding is performed when the filling port 6 is sealed is also the PE layer 12 c and the PE layer 27. Since polyethylene is easier to melt by heat than polypropylene and is a suitable material for heat welding, the bag A4 with a fastener is easy to perform heat welding during manufacture.

  1st Embodiment of the manufacturing method of such a bag A4 with a fastener is described with reference to FIGS.

  The fastener-attached bag A <b> 4 is manufactured from the main body panel 81, the additional panel 82, and the second panel 20. The main body panel 81 is a laminate film composed of the PE layer 17 and the PP layer 18, and the additional panel 82 is a laminate film composed of the PE layers 12a and 12c and the PP layer 12b. As in the case of the method of manufacturing the bag A1 with fastener, the main body panel 81, the additional panel 82, and the second panel 20 are moved at a predetermined speed along the longitudinal direction common to them. Is added.

  First, as shown in FIG. 15, the female fastener 3b extending along the longitudinal direction is installed at a predetermined position on the main body panel 81, and the male fastener 3a extending along the longitudinal direction is similarly placed on the additional panel 82. Installed at a predetermined position. By further heating, the female fastener 3b is thermally welded to the PE layer 18 and the male fastener 3a is thermally welded to the PE layer 12a. At the same time, the perforation 4 extending along the longitudinal direction is formed in the main body panel 81.

  Next, as shown in FIG. 16, the main body panel 81 and the additional panel 82 are overlapped so that the PE layer 17 and the PE layer 12a face each other and the male fastener 3a and the female fastener 3b are fitted.

  Next, as shown in FIG. 17, the main body panel 81 and the additional panel 82 are thermally welded within a predetermined range to form the bonding portion 7 a and complete the first panel 10. Thereby, the main body panel 81 becomes the main body portion 11, and the additional panel 82 becomes the folded portion 12. Further, the bonding portion 7 a is a portion corresponding to the upper end portion 13 in the main body portion 11. Since the heat welding operation when forming the bonding portion 7a is the heat welding of the PE layer 17 and the PE layer 12a, it can be easily performed.

  Next, as shown in FIG. 18, the first panel 10 and the second panel 20 are overlapped so that the PE layer 12 c and the PE layer 17 and the PE layer 27 face each other. Since both the first panel 10 and the second panel 20 extend along the longitudinal direction, when overlapping, the first panel 10 and the second panel 20 are aligned in the left-right direction in FIG. Do.

  Next, as shown in FIG. 19, the lower end portion 14 of the first panel 10 and the lower end portion 24 of the second panel 20 are heat-welded to form an adhesive portion 7b and the bottom portion 5 of the fastener-attached bag A4. To do. Since this thermal welding operation is thermal welding performed between the PE layer 17 and the PE layer 27, it can be easily performed.

  After that, as in the case of the method of manufacturing the bag A1 with fastener, the first panel 10 and the second panel 20 are welded at predetermined intervals along the longitudinal direction, and the welded portion is cut. The attached bag A4 is manufactured. Before cutting the welded portion, the bag is filled with an article from the filling port 6, the folded portion 12 and the second panel 20 are thermally welded at the filling port 6, and the bag A 4 with fastener is sealed. Also good. The thermal welding between the folded portion 12 and the second panel 20 at the filling port 6 can be easily performed because it is the thermal welding between the PE layer 12c and the PE layer 27.

  According to such a manufacturing method, as in the case of the manufacturing method of the bag A1 with a fastener, there is no fear that the male fastener 3a and the female fastener 3b are unfairly welded, and the fastener 3 is passed through the filling port 6. The article can be stored while closed. Further, by using a laminate film having a different structure in combination, it is possible to always easily perform heat welding while making the outside of the bag a heat-resistant material.

  A second embodiment of the method for manufacturing the bag A4 with fastener will be described with reference to FIG.

  In this manufacturing method, as shown in FIG. 20, before the male fastener 3 a and the female fastener 3 b are welded to the main body panel 81 and the additional panel 82, the main body panel 81 and the additional panel 82 face each other. Further, the male fastener 3a and the female fastener 3b in a fitted state are inserted between the body panel 81 and the additional panel 82 facing each other. Then, the male fastener 3a is welded to the PE layer 12a and the female fastener 3b is welded to the PE layer 17 by pressing and heating from both sides of the main body panel 81 and the additional panel 82. When the bonding portion 7a is formed simultaneously with or after the welding operation, the state shown in FIG. 17 is obtained. Thereafter, the steps are performed in the same manner as in the first embodiment of the method for manufacturing the bag A4 with fastener.

  In such a manufacturing method, the welding operation of the male fastener 3a and the female fastener 3b can be performed simultaneously. Furthermore, the welded portion 7a can be formed at the same time, and the manufacturing process can be simplified.

  A third embodiment of the method of manufacturing the bag A4 with fastener will be described with reference to FIG.

  In this manufacturing method, as shown in FIG. 21, after the main body panel 81 and the additional panel 82 are overlapped to form the adhesive portion 7a, the male fastener 3a and the female fastener 3b are placed between the main body portion 11 and the folded portion 12. Insert into and weld. Other manufacturing processes are the same as those of the second embodiment of the method for manufacturing the bag A4 with fastener.

  According to such a manufacturing method, when the male fastener 3a and the female fastener 3b are inserted between the main body portion 11 and the folded portion 12, even if the fastener 3 rubs against the main body portion 11 or the folded portion 12, There is no worry that the main body 11 and the folded-back portion 12 are displaced.

  FIG. 22 shows a fifth embodiment of a fastener-attached bag according to the first aspect of the present invention. FIG. 22 is a cross-sectional view of the fastener-attached bag A5. The fastener-attached bag A5 has the same effect as the fastener-attached bag A3 because the bottom portion 5 is bent inward. Further, the folded portion 12 is separate from the main body portion 11. For this reason, the folding | returning part 12 and the main-body part 11 can also be formed with another film member like bag A4 with a fastener. The other structure is the same as that of the bag A1 with a fastener.

  A first embodiment of the method of manufacturing such a fastener-attached bag A5 will be described with reference to FIGS.

  The bag A5 with a fastener has a predetermined width, a film member 83 whose longitudinal direction is a direction orthogonal to the width direction, and an additional panel 84 that is shorter than the film member 83 and has the same longitudinal direction. It is manufactured by applying the following operations while moving along the longitudinal direction at a speed.

  First, as shown in FIG. 23, the female fastener 3b is affixed to the film member 83, and the perforation 4 is formed between the left end of the film member 83 in the figure and the position where the female fastener 3b is installed. Further, the male fastener 3a to be fitted to the female fastener 3b is attached to the additional panel 84. When attaching the male fastener 3a or the female fastener 3a, the positions of the film member 83 and the additional panel 84 are not limited to the arrangement as shown in FIG. However, if the positions of the film member 83 and the additional panel 84 are arranged so that their ends overlap each other as shown in FIG. 23, it is advantageous in the next step.

  Next, as shown in FIG. 24, the film member 83 is bent to form the bottom 5. Formation of the bottom part 5 can be performed similarly to the case where the bag A3 with a fastener is manufactured. By forming the bottom portion 5, the film member 83 is divided into the main body portion 11 and the second panel 20. After this, the additional panel 84 may be inserted into the main body 11 and the second panel 20, but it is more efficient to carry out as follows. First, before the film member 83 is bent, the additional panel 84 is brought close to one end of the film member 83 as shown in FIG. Next, at this end, the film member 83 and the additional panel 84 are aligned and fixed, and the other end is moved during bending. If it does in this way, position alignment of the additional panel 84 is easy and it is also easy to fit the male fastener 3a and the female fastener 3b.

  Thereafter, the additional panel 84 is bonded to the upper end portion 13 of the main body portion 11. This bonding operation is performed by sticking with an adhesive, sewing, performing ultrasonic sealing, or heat welding. The additional panel 84 attached to the main body portion 11 becomes the folded portion 12. Thereafter, the fastener-attached bag A5 can be manufactured by the same process as the manufacturing method of the fastener-attached bag A1. In this manufacturing method, the male fastener 3a and the female fastener 3b are separately attached as in the case of the bag A1 with fastener, so that even if the pasting operation is performed by welding, they are unreasonably welded. It is not.

  In FIG. 25, 2nd Embodiment of the manufacturing method of the bag A5 with a fastener is shown. In this case, as shown in FIG. 26, before the film member 83 is bent, the additional panel 84 is opposed to the film member 83 so that the male fastener 3a and the female fastener 3b are fitted. Then, if the film member 83 is bent so as to form the bottom portion 5, the state shown in FIG. 24 is obtained. Or you may adhere | attach the film member 83 and the additional panel 84 in the left end part in FIG. 25, before bending. According to such a manufacturing method, positioning of the additional panel 84 becomes easier.

  In FIG. 26, 3rd Embodiment of the manufacturing method of the bag A5 with a fastener is shown. In this case, as shown in FIG. 26, the film member 83 and the additional panel 84 face each other, and the fastener 3 fitted between them is inserted, and then the fastener 3 is attached to the additional panel 84 and the film member 83. Then, since it will be in the state of FIG. 25, it can carry out similarly to the case of 2nd Embodiment after that. According to such a manufacturing method, the male fastener 3a and the female fastener 3b can be attached in one operation, and the manufacturing process is simplified.

  The fastener-attached bag and the manufacturing method thereof according to the present invention are not limited to the above-described embodiment. For example, you may implement combining the structure of each detail in the bags A1-A5 with a fastener. Furthermore, in the manufacturing method of the bag A1 with a fastener, the order of folding the film member 8 may be freely changed. That is, after the film member is folded so that the bottom portion 5 is formed, the film member 8 may be folded at the upper end portion 13 so that the folded portion 12 is formed. In addition, the formation of the bonding portions 7a and 7b and the welding of the seal portion 8a may be performed in the reverse order.

  Furthermore, in the bags A1 to A5 with fasteners, the male fastener 3a and the female fastener 3b may be interchanged with each other. be able to. In addition, the formation of the bonding portions such as the bonding portions 7a, 7b, and 7c and the seal portion 8a is not limited to the above-described means, and a suitable bonding method can be appropriately selected.

It is a top view showing a 1st embodiment of a bag with a fastener concerning the 1st side of the present invention. It is sectional drawing which follows the II-II line of FIG. It is sectional drawing which shows the usage example of the bag with a fastener of FIG. It is sectional drawing which shows the process of forming the fastener and perforation of the bag with a fastener of FIG. It is sectional drawing which shows the process of forming the folding | turning part of the bag with a fastener of FIG. It is sectional drawing which shows the process of forming the 1st panel and 2nd panel of a bag with a fastener of FIG. It is a top view which shows the process of welding the bag with a fastener of FIG. 1 for every predetermined space | interval along the longitudinal direction of a film member. It is sectional drawing which shows the process of accommodating articles | goods in the bag with a fastener of FIG. It is sectional drawing which shows the process of welding the filling port of the bag with a fastener of FIG. It is a top view which shows 2nd Embodiment of the bag with a fastener which concerns on the 1st side surface of this invention. It is a top view which shows 3rd Embodiment of the bag with a fastener which concerns on the 1st side surface of this invention. It is sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which shows the state which opened the bottom part of the bag with a fastener of FIG. It is sectional drawing which shows 4th Embodiment of the bag with a fastener which concerns on the 1st side surface of this invention. It is sectional drawing which shows the process of forming the fastener and perforation of the bag with a fastener of FIG. It is sectional drawing which shows the process of facing two laminated films which comprise the 1st panel of the bag with a fastener of FIG. It is sectional drawing which shows the process of joining the two laminated films which comprise the 1st panel of the bag with a fastener of FIG. It is sectional drawing which shows the process of facing the laminated film which comprises a 2nd panel to the 1st panel of the bag with a fastener of FIG. It is sectional drawing which shows the process of joining the laminate film which comprises a 2nd panel to the 1st panel of the bag with a fastener of FIG. It is sectional drawing which shows the process of facing two laminated films which comprise the 1st panel of the bag with a fastener of FIG. 14 before forming a fastener. It is sectional drawing which shows the process of attaching a fastener after forming the 1st panel of the bag with a fastener of FIG. It is sectional drawing which shows 5th Embodiment of the bag with a fastener which concerns on the 1st side surface of this invention. It is sectional drawing which shows the process of attaching a fastener to the bag with a fastener of FIG. It is sectional drawing which shows the process of forming the bottom part of the bag with a fastener of FIG. It is sectional drawing which shows another manufacturing process of the bag with a fastener of FIG. It is sectional drawing which shows the process of attaching a fastener to the bag with a fastener of FIG. 22 by another method. It is sectional drawing of the conventional bag with a fastener.

Explanation of symbols

A1, A2, A3, A4, A5 Fastener-attached bag 10 First panel 11 Body portion 12 Folded portion 13, 23 Upper end portion 14, 24 Lower end portion 15, 25 Side portion 16 Hanging hole 17, 12a, 12c, 27 PE layer 18, 12c, 28 PP layer 20 2nd panel 3 fastener 3a male fastener 3b female fastener 4 perforation (cutting means)
40 Cut tape (cutting means)
41 Grasping part 5 Bottom part 6 Filling port 7a, 7b, 7c Adhesion part 8,83 Film member 8a Seal part 81 Main body panel 82,84 Additional panel

Claims (27)

A first panel and a second panel formed by a film member and overlapped with each other, and the first panel and the second panel are formed into a bag shape with their side portions and bottom portions connected to each other. A bag with a fastener that can be opened and closed by the upper part,
The first panel includes a main body connected to the second panel, and a folded portion that is sandwiched between the main body and the second panel and extends from the top of the main body toward the bottom. And
The folding part is provided with a male fastener or a female fastener,
The main body portion is provided with a female fastener or a male fastener that fits with the male fastener or the female fastener provided on the inner surface of the folded portion, and
A bag with a fastener, characterized in that a slit opening means is formed above a portion of the main body portion where the female fastener or the male fastener is provided.   The bag with a fastener according to claim 1, wherein the folded portion is a film member that is the same as the main body portion, and is formed by bending the leading end of the film member toward the bottom portion.   The bag with a fastener according to claim 1, wherein the folded portion is formed by bonding a film member different from the main body portion at an upper portion thereof.   The bag with a fastener according to claim 3, wherein the main body portion and the folded portion are welded over a predetermined vertical width at an upper portion thereof.   The bag with a fastener according to any one of claims 1 to 4, wherein the bottom portions of the first panel and the second panel are joined together by folding one film member.   The bag with a fastener according to any one of claims 1 to 5, wherein the first panel and the second panel are welded over a predetermined vertical width at their bottoms.   The bag with a fastener according to any one of claims 1 to 6, wherein the filling port is sealed after the contents are filled from a filling port formed by an inner surface of the second panel and an outer surface of the folded portion. A film member having a first end and a second end in the width direction and having a predetermined width and extending in the longitudinal direction is provided, and includes a first panel and a second panel that are overlapped with each other. The panel is a bag-like manufacturing method in which the side portions and the bottom portions are connected to each other to form a bag, and the upper portion can be opened and closed by the fastener.
A male fastener and a female fastener extending in the longitudinal direction with a predetermined interval in the width direction are attached to the portion near the first end portion, and a slit extending in the longitudinal direction to a predetermined portion between the male fastener and the female fastener is attached. A first step of forming means;
A portion near the first end portion is folded to form a main body portion including the slitting means, and a folded portion connected to the main body portion and including the first end portion is formed. The male fastener and the female fastener are formed. A second step of fitting together,
The portion near the second end is folded so as to overlap the folded portion so that the first panel on the first end side and the second panel on the second end side overlap each other while forming a bottom portion. A third step to perform,
A fourth step of joining the first panel and the second panel to each other along the width direction at regular intervals in the longitudinal direction;
The manufacturing method of the bag with a fastener characterized by including these.   The step of thermally welding the folded portion to the main body portion in a predetermined region between the connecting portion between the main body portion and the folded portion and the slitting means is performed after the second step. The manufacturing method of the bag with a fastener of description.   The manufacturing method of the bag with a fastener of Claim 8 or 9 which performs the process of heat-welding the said 1st panel and the said 2nd panel mutually in the vicinity of the said bottom part after the said 3rd process.   The method for manufacturing a bag with a fastener according to any one of claims 8 to 10, wherein the fourth step includes an operation of cutting along a portion where the first panel and the second panel are joined.   The step of filling the contents from the filling port formed by the end portion of the folded portion and the second end portion of the second panel and sealing the filling port after the fourth step. The manufacturing method of the bag with a fastener in any one of 8 thru | or 11. A plurality of film members having a predetermined width and extending in a longitudinal direction perpendicular to the width direction are used, and the first panel and the second panel are overlapped with each other. And a bottom part are connected to each other to form a bag, and a fastener-attached bag manufacturing method in which an upper part can be opened and closed by a fastener including a male fastener and a female fastener,
A main body connected to the second panel;
A folded portion extending from the top of the main body toward the bottom;
A male fastener and a female fastener formed between the main body and the folded portion;
A slitting means formed between the upper portion of the main body, and the male fastener and the female fastener bonded to the main body;
A first step of forming the first panel comprising:
A second step of overlapping the first panel and the second panel so as to sandwich the folded portion;
A third step of forming the bottom;
A fourth step of joining the first panel and the second panel to each other along the width direction at regular intervals in the longitudinal direction,
The first step is
Forming the slitting means in the main body panel which is one of the plurality of film members;
An additional panel that is one of the plurality of film members and shorter in the width direction than the main body panel is disposed on the upper portion of the main body panel, and one end in the width direction is in contact with the upper portion of the main body panel, and the other end. A step of superimposing with the main body panel so that is directed to the bottom,
Forming the main body part and the folded part by bonding the main body panel and the additional panel at a predetermined width along the width direction from their upper part;
A method of manufacturing a bag with a fastener, comprising: forming the fastener. The step of forming the fastener is performed before the main body panel and the additional panel are overlapped,
Bonding one of the male fastener and the female fastener to the body panel;
Bonding a female fastener or a male fastener that fits with the male fastener or female fastener bonded to the body panel to a surface of the additional panel facing the body panel;
The manufacturing method of the bag with a fastener of Claim 13 which has. The step of forming the fastener is performed from the end of the step of superimposing the main body panel and the additional panel to the end of the step of forming the main body portion and the folded portion,
The male fastener and the female fastener in a fitted state are inserted between the main body portion and the folded portion, and one of the male fastener and the female fastener is bonded to the main body portion, and the main body portion Bonding a female fastener or a male fastener that fits with the male fastener or female fastener adhered to the inner surface of the folded portion;
The manufacturing method of the bag with a fastener of Claim 13 which has. The step of forming the fastener is performed after the step of forming the main body portion and the folded portion,
The male fastener and the female fastener in a fitted state are inserted between the main body portion and the folded portion, and one of the male fastener and the female fastener is bonded to the main body portion, and the main body portion Bonding a female fastener or a male fastener that fits with the male fastener or female fastener adhered to the inner surface of the folded portion;
The manufacturing method of the bag with a fastener of Claim 13 which has.   The manufacturing method of the bag with a fastener in any one of Claim 13 thru | or 16 with which adhesion | attachment with the said main body panel and the said additional panel is performed by heat welding.   The bag with a fastener according to any one of claims 13 to 17, wherein the third step includes a step of bonding the first panel and the second panel to a predetermined width along the width direction from the bottom thereof. Manufacturing method.   The manufacturing method of the bag with a fastener of Claim 18 which performs the said process to adhere | attach by heat welding.   The said 4th process is a manufacturing method of the bag with a fastener in any one of Claim 13 thru | or 20 including operation which cut | disconnects along the part to which the said 1st panel and the said 2nd panel were joined.   The step of filling the contents from the filling port formed by the end portion of the folded portion and the end portion of the second panel and sealing the filling port after the fourth step. The manufacturing method of the bag with a fastener in any one of. A film member having a first end and a second end in the width direction and extending in the longitudinal direction with a predetermined width;
With an additional panel made of a film extending in the longitudinal direction with a predetermined width narrower than the film member,
The first panel and the second panel are overlapped with each other, and the first panel and the second panel are formed in a bag shape by connecting their side portions and bottom portions, and the upper portion can be opened and closed by a fastener. A method of manufacturing a bag with fasteners,
The film member is folded so that the first end and the second end overlap, the bent portion is defined as the bottom, and the portion from the first end to the bottom of the film member is defined as the first end. A step of forming a main body portion of one panel and a portion from the second end portion to the bottom portion of the film member as the second panel;
Forming a male fastener or a female fastener extending along the longitudinal direction at a predetermined position near the first end of the main body; and
Forming a female fastener or male fastener that fits into the male fastener or female fastener formed in the main body portion on the additional panel;
Forming a slitting means extending along the longitudinal direction between a position where the male fastener or female fastener is to be formed and the first end;
A first step comprising:
A second step of forming the first panel having a folded portion by attaching the additional panel to the first end of the main body;
The manufacturing method of the bag with a fastener including the 3rd process which joins the said 1st panel and the said 2nd panel mutually along a width direction for every longitudinal direction fixed space | interval.   In the step of bending the film member, the additional panel and the film member are overlapped so that one end of the additional panel overlaps the second end of the film member, and the additional panel is sandwiched between the film and the film. The manufacturing method of the bag with a fastener of Claim 22 which bends a member.   In the step of bending the film member, the additional panel is sandwiched between the film and the additional panel so that one end of the additional panel overlaps the first end of the film member. The manufacturing method of the bag with a fastener of Claim 22 which bends a member.   A step of forming a male fastener or a female fastener extending along the longitudinal direction at a predetermined position near the first end of the main body, and fitting with the male fastener or the female fastener formed on the main body. The method for manufacturing a bag with a fastener according to claim 24, wherein the step of forming the female fastener or the male fastener on the additional panel is performed simultaneously between the step of bending the film member and the second step.   The method for manufacturing a bag with a fastener according to any one of claims 22 to 25, wherein the third step includes an operation of cutting along a portion where the first panel and the second panel are joined.   27. The step of filling the contents from the filling port formed by the end portion of the folded portion and the end portion of the second panel and sealing the filling port after the third step. The manufacturing method of the bag with a fastener in any one of.

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