JP4868794B2 - Packaging bag with zipper and bag packaging with zipper using the same - Google Patents

Description

  The present invention relates to a packaging bag with a zipper and a bag packaging body with a zipper using the same.

  Conventionally, a packaging bag is sealed by sealing the bag opening by heat sealing or the like, and is opened by tearing the bag using an easy opening means such as an I notch or a V notch. There are some forms. After removing the product contained in the bag from the opened bag, the bag can be sealed again, or after opening, the bag opening can be repeatedly sealed and opened. Providing a zipper in the vicinity has been proposed and is actually used.

When the bag body is formed into a cylindrical shape by heat-sealing the left and right edges of the laminated film in the longitudinal direction, at least one side is formed by the folded portion of the laminated film, and the upper opening end is formed. Heat seal at the upper seal part and heat-bond the chuck tape laterally from the one side to the other side on the inner inner surface, and a cut line, notch, etc. between the upper seal part and the chuck tape There has been proposed a bag with a zipper tape that is provided with the opening means (see Patent Document 1). The thermal bonding of the chuck tape is performed by a method in which the chuck tape is temporarily bonded to the laminated film before being folded, and is formed into a cylindrical shape, followed by main bonding. Further, it is disclosed that a spot seal portion is provided in the bag of the portion in order to form a notch between the upper seal portion and the chuck tape.
Japanese Patent Laying-Open No. 2003-212248 (paragraphs [0033] to [0038], FIG. 1)

  FIG. 5 is a partial view showing a main part of a conventional packaging bag with a zipper. As shown in FIG. 5, about the zipper 8, the zipper piece is stuck by the heat seal on the inner surface side of the packaging material f which forms the bag. Moreover, the edge parts 15 and 16 of the zipper 8 are normally located in the side edge part of the bag 41 which consists of the folded-up packaging material f. The end portions 15 and 16 of the zipper 8 are crushed in a state where the projections and recesses are engaged so as not to damage the packaging material f.

  In the past attachment of the zipper 8 to the bag 1, the bag packaging material and the zipper tape 13 are attached by the heat seal portions 26 and 27 within the range of the zipper tape 13. Since the thickness of the zipper cores 11 and 12 is equal to or greater than the thickness of the zipper tape 13, it is difficult for the heat seal portion 27 to obtain a uniform seal over the zipper tape 13 and the zipper cores 11 and 12, There is a problem that it is difficult to ensure sealing at the end portions 15 and 16 of the zipper 8. In addition, the end portions 15 and 16 of the zipper cores 11 and 12 are prevented from being disengaged by being crushed, but when the end portions 15 and 16 are disengaged while repeatedly being sealed and opened, The end portions 15 and 16 of the zipper cores 11 and 12 that are free to move easily damage the edge portions of the bag packaging material f. In the worst case, the sealing performance of the bag 41 cannot be maintained.

Therefore, as for the attachment of the zipper to the inner surface of the bag wrapping material, the zipper is attached to the bag wrapping material without pressing the zipper core including the crushed end portion and heat-sealing the bag wrapping material, and the zipper is opened. also be limited to an extent never as possible opening completely the opening of the bag opening, there is a problem to be solved in that to prevent the engagement of the ends of the zipper core in the state crush is out.

The object of the present invention is to enable the zipper to be attached to the bag packaging material without increasing the work load without pressing the zipper core including the crushed end portion to heat-seal the bag packaging material. At the same time, when opening the zipper by opening the zipper by picking the bag packaging material, etc., it is possible to prevent an unreasonable force from acting on the both ends of the zipper core from acting, It is to provide a packaging bag with a zipper that can prevent the packaging bag from being damaged by the end of the detached zipper core, and a zipper bag package using the same.

To solve the above problems, zipper packaging bag according to the invention is provided with a zipper having a zipper core capable engage each other and a dichloride Ppatepu formed to the zipper core integrally with the zipper tape In the packaging bag with a zipper attached to the inner surface facing the bag wrapping material by the attachment seal portion, the both end portions of the zipper core are crushed in a state of being engaged with each other, and the attachment seal portion is separated from the zipper core. A first seal portion formed to extend over the bag width along the zipper core and away from the bag opening, and both ends of the zipper core separated from the zipper core toward the bag packaging inner side A second seal portion formed at a position corresponding to the bag opening side of the zipper tape and the bag packaging inner side The bag side edges and corresponding to the opposite ends of the zipper core in the vicinity, are a feature in that the end seal portion for sealing said bag packaging material to each other are formed.

According to this packaging bag with a zipper, the zipper packs the zipper tape by the mounting seal portion composed of the first seal portion and the second seal portion without crushing the zipper core and heat-sealing the bag packaging material. It is attached to the bag packaging material by sealing it on the inner surface of the packaging material. Moreover, it attaches in an airtight state between the zipper tape and the inner surface of a bag packaging material by the 1st seal | sticker part formed extending over the bag width along the zipper core . By engaging the zipper cores of the zipper attached to the inner surface of the bag in this manner, the inside of the bag package is hermetically sealed from the outside. When the bag opening is torn and opened, or when the bag is opened again after re-closing, the bag opening can be opened wide so that the inside of the bag can be accessed through the bag opening. At this time, the zipper core meshed by pinching the opened packaging material on the bag opening side from the zipper or by picking the bag packaging material inside the bag packaging side from the zipper and opening it to the left and right And the bag is opened at the zipper.

The disengagement of the zipper core gradually spreads from the center portion toward the bag edge as viewed in the bag width direction. Since the bag side edge corresponding to the both end portions of the zipper core is formed in the vicinity of the bag opening side of the zipper tape and the bag packing inner side, an end seal portion for sealing the bag packing materials is formed. Regardless of which side of the bag opening side of the material and the inner side of the bag packaging is picked, the opening of the packaging bag is stopped at the end seal portion sealing the packaging materials. . Therefore, the disengagement of the zipper core stops when the opening of the packaging bag is stopped at the end seal portion, and an unreasonable force is applied to both ends of the zipper core from the bag packaging material side. Without damage, both ends of the zipper core can be prevented from being damaged.

  In this packaging bag with a zipper, the end seal portion can be formed continuously with the end portion of the first seal portion or the second seal portion. A heat sealer for the end seal portion and a mounting seal by forming the end seal portion continuously with the end of the first seal portion or the second seal portion located proximate to the end seal portion; The heat sealer that forms the portion can be formed continuously, and the end seal portion can prevent the opening of the packaging material at a position as close as possible to both ends of the zipper core.

In this packaging bag with a zipper, the first seal portion can be formed at a position closer to the zipper core than the edge in the width direction of the zipper tape at a portion excluding the end portion of the first seal portion . When attaching the zipper by a heat-sealed against the bag packaging material, a formation position of the first sealing portion by determining, as described above, the space for opening slits provided in the bag open end nearer zipper It is possible to avoid the packaging materials from being erroneously sealed.

In the packaging bag with a zipper , easy opening means for starting tearing can be formed in the end seal portion formed continuously with the end portion of the first seal portion. Even when forming the easy-opening means, it is necessary to maintain the sealing of the packaging bag. By using the end seal part formed on the bag side edge of the packaging bag, an easy-opening means such as an opening notch is formed. When opening the packaging bag, the opening can be easily performed by using easy-opening means.

In this packaging bag with a zipper, the second seal portion is formed to have a width that is wider when viewed in the bag width direction than the crushing length along the longitudinal direction of the zipper core at both ends of the zipper core. be able to. By defining the sealing range of the second seal portion in this way, the opening of the packaging bag is stopped at the second seal portion even if the packaging material is picked and the zipper is opened. That is, since the packaging bag is surely stopped before the both ends of the zipper core, the zipper opening does not reach the crushed end of the zipper core, so that an excessive force acts on the end of the zipper core. There is no.

  This packaging bag with a zipper is used for a bag packaging body in which the packaging bag is used to store a product inside, and after opening the bag opening, the packaging bag can be resealed and reclosed by the zipper. Can do.

The packaging bag with zipper and the bag packaging body with zipper according to the present invention are configured as described above, and when the zipper cores of the zipper attached to the inner surface of the bag are meshed with each other, the inside of the bag packaging is a part of the zipper. Sealed and sealed. When the bag opening is opened by tearing, or when it is opened again after reclosing, the inside of the bag can be accessed through the opening of the bag and the opened zipper. At this time, the zipper cores that have been engaged with each other are disengaged by picking the unwrapped packaging material on the bag opening side from the zipper or opening the left and right sides of the packaging material inside the bag packaging from the zipper. The bag is opened at the part.
Further, since the first seal portion and the second seal portion are separated from the zipper core toward the bag opening side or the bag opening side and are sealed to the packaging material, the first sealing portion causes the gap between the zipper tape and the bag packaging material. And the attachment of the zipper to the inner surface of the bag is ensured by the cooperation of the first seal portion and the second seal portion. In addition, there is no need to heat-seal the zipper tape and bag wrapping material at the part where the zipper core exists, and as a result, the heat seal between the zipper tape and the bag wrapping material is affected by the thick zipper core. The zipper can be attached to the packaging material in a good sealed state.
Furthermore, since the bag side edge corresponding to the both ends of the zipper core is formed in the vicinity of the bag opening side of the zipper tape and the bag packaging inner side, an end seal portion for sealing the bag packaging materials is formed. , by picking either side portion of the bag opening side and bag packaging inner side of the packaging material as to open the packaging bag, the opening of the packaging bag in the end seal portion that seals with each other packing materials Stopped. Therefore, the disengagement of the zipper core stops when the opening of the packaging bag is stopped at the end seal portion, and an excessive force to disengage the zipper core does not act on both ends of the zipper core, and the zipper core As a result, in the packaging bag with zipper and the bag packaging body using the same, damage to the packaging bag due to the zipper core can be prevented.

  Hereinafter, an embodiment of a bag package with a zipper according to the present invention will be described based on the attached drawings. 1 is a front view showing an embodiment of a bag package with a zipper according to the present invention, FIG. 2 is a sectional view of the bag package with a zipper shown in FIG. 1, and FIG. 3 is an opening of the bag package with a zipper shown in FIG. It is a perspective view which shows the state which carried out.

  The zippered bag package P1 shown in FIG. 1 is a package in which the product A is contained in a zippered packaging bag (hereinafter simply referred to as “bag”) 1 manufactured as a flat bag. The bag 1 includes a barrel portion 2 formed in a cylindrical shape, a ground end seal portion 3 that is heat-sealed at the lower end portion of the barrel portion 2 to form a bag bottom, and an upper end portion of the barrel portion 2. And is sealed and formed as a flat bag having a top end seal portion 4 which is heat sealed to form the upper end of the bag. As is apparent from the fact that the end seal portions 3 and 4 are heat-sealed, the packaging material is given self-adhesion on the inner surface side by applying heat. Although the trunk | drum 2 is made from the cylindrical packaging material which formed the web-shaped packaging material in the cylinder shape by the vertical seal, you may use the packaging material currently formed in the cylinder shape from the beginning. Moreover, a flat bag packaging material can also be used, and when manufacturing the bag packaging body P1 separately, about one sheet of packaging material, or when manufacturing continuously, it is a web-shaped packaging material (afterwards, Are formed into a cylindrical shape by forming a back-sealed seal portion 5 by heat-sealing the combined side edge portions.

  In order to allow the opening of the opened bag package P1 to be repeatedly closed, a slight tear-opening space 6 is provided at a position near the center of the bag of the top end seal portion 4 so that the opening and closing can be resumed and reclosed. A zipper 8 is provided. The zipper 8 is composed of two zipper pieces, that is, a convex zipper piece 9 and a concave zipper piece 10 as best shown in the sectional view shown in FIG. 2A is a longitudinal sectional view at the center of the bag 1, and FIG. 2B is a longitudinal sectional view at the bag side edge 2a of the bag 1. FIG. The zipper pieces 9, 10 are formed integrally with the zipper cores 11, 12 and the zipper cores 11, 12 which are meshable convex zipper core 11 and concave zipper core 12, one of which is male and the other is male. Zipper tapes 13 and 14 are attached to the inner surfaces of the bag wrapping material facing each other by mounting seal portions described later. The zipper pieces 9 and 10 are formed in the same shape and structure except for male and female meshing. The zipper tapes 13 and 14 of the zipper pieces 9 and 10 have a constant width H, and zipper cores 11 and 12 are integrally formed in the center regions in the width direction of the zipper tapes 13 and 14, respectively. The zipper cores 11 and 12 are crushed in a flat state in a direction that is flush with the zipper tapes 13 and 14 in a state in which both end portions 15 and 16 thereof are engaged with each other. In the state, the opening is stopped at both ends 15, 16, and it is not opened at both ends 15, 16.

The convex zipper piece 9 and the concave zipper piece 10 are formed by heat sealing the inner side of the bag packaging material on the side opposite to the side where the zipper cores 11 and 12 are formed. It is stuck. Zipper 8 is previously in a state where the fitting the zipper core 11 and concave zipper core 12 of the convex, are temporarily fixed by adhesive or heat sealing part in the packaging material is positioned in the packaging material The During manufacture of the packaging bag 1, the zipper 8 being positioned in the bag wrapping material by heat sealing the zipper tape 13 on the inner surface of the bag packaging materials by zipper seal, it is attached to the bag packaging materials .

An attachment seal portion for attaching the zipper 8 to the packaging bag 1 will be described. In addition, since it is the same attachment structure also in the back surface side of the packaging bag 1, it demonstrates on behalf of the front side. The attachment seal portion 20 for attaching the zipper tape 13 to the bag wrapping material is formed to extend away from the zipper core 11 toward the bag opening and along the zipper core 11 over the bag width W1. 21 and second seal portions 22, 22 formed on the bag side edge portions corresponding to both end portions 15, 16 of the zipper core 11, which are separated from the zipper core 11 toward the bag packaging inner side.

Since the zipper tape 13 is heat-sealed to the inner surface of the bag wrapping material with the full width W1 by the first seal portion 21 of the attachment seal portion 20, the space between the zipper tape 13 and the inner surface of the bag wrapping material is the inside and outside of the bag 1. Sealed in the direction to pass through and attached in an airtight state. The first seal portion 21 has an upper end edge 13a (zipper tape 14) which is one edge in the width direction of the zipper tape 13 over most of the bag width W1 excluding both end portions 21a of the first seal portion 21. Is formed at an inward position from the upper edge 14a). By determining the position of the first seal portion 21 in this way, when the first seal portion 21 is formed by a zipper seal, it is possible to prevent the inner surfaces of the bag packaging material from being sealed at the portion of the opening space 6. Can do. On the other hand, the second seal portion 22 is wider in the bag width direction than the crushed length W2 along the longitudinal direction of the zipper core 11 at both ends 15 and 16 of the zipper core 11 that is crushed in a meshed state. The width W3 of the dimension is formed.

A first end portion that seals the bag packaging materials on the bag side edge portions 6a and 6a of the opening space 6 in the vicinity of the bag opening portion side of the zipper tape 13 and corresponding to both end portions 15 and 16 of the zipper core 11 Seal portions 23 and 23 are formed, and the bag side edge portions 2a and 2a of the trunk portion 2 corresponding to both end portions 15 and 16 of the zipper core 11 near the bag packaging inner side of the zipper tape 13 Second end seal portions 24, 24 for sealing the bag wrapping materials are formed. In this embodiment, the first end seal portions 23, 23 are formed continuously with the end portions 21 a, 21 a of the first seal portion 21 located in the vicinity thereof, and the second end seal portions 24, Reference numeral 24 is formed continuously with the second seal portions 22 and 22 located in the vicinity thereof. With such a sealing structure, the first seal portion 21 or the second seal portion 22, the heat sealer when forming the first end seal portions 23, 23 and the second end seal portions 24, 24, A simple structure capable of performing heat sealing continuously with 22 can be employed.

  At least one first end seal portion 23 is formed with an opening notch 25 that is used to tear the packaging bag 1 to open the bag package P1. That is, the first end seal portion 23 is used as a spot seal portion that seals the inner surfaces of the packaging material for forming the opening notch 25. Since the seal portion of the first end seal portion 23 remains around the opening notch 25, the sealing of the bag 1 or the bag package P is not impaired even if the opening notch 25 is formed. The product A can be accessed by opening the zipper 8 by opening the bag package P1 by tearing the packaging bag 1 from the opening notch 6.

  In order to start tearing from the opening notch 25 and tear the opening space 6, a packaging film stretched at least in the tearing direction (lateral direction of the packaging bag 1) can be used. The opening notch 25 is a so-called V-notch that is cut into a V shape from the outside in the illustrated example, but can also be an I-notch or other shape that guides the tearing direction. Moreover, the weakening line 25a which tears and guides tearing inside the top end seal part 4 is formed in the packaging material on the extension of the opening notch 25, so that the tearing line proceeds in an unintended direction. It is preferable to guide so that there is no straight opening line. Instead of the weakening line 25a, an instruction line for guiding the tearing direction to the user can be shown by printing or the like.

  Next, reclosing / reopening of the opening of the bag 1 will be described. By fitting or removing the convex zipper core 11 and the concave zipper core 12, the opening of the bag 1 can be reclosed and reopened. By engaging the zipper cores 11 and 12, the inside of the bag 1 is hermetically sealed from the outside. When the bag 1 is torn and opened in the opening space 6 or when the zipper 8 is opened again after the zipper 8 is reclosed, the bag 1 can be opened wide by opening the bag 1 wide. Can be accessed.

Engage the zipper cores 11 and 12 engaged with each other by picking the opened packaging material on the bag opening side from the zipper 8 or by picking the packaging material inside the bag packaging from the zipper 8 and opening it left and right And the bag is opened at the zipper 8 portion. The disengagement of the zipper cores 11 and 12 gradually spreads from the center portion toward the bag edge as viewed in the bag width direction. As shown in the perspective view showing the opened state of the bag 1 in FIG. 3, the bag 1 is opened regardless of which side of the bag opening side of the packaging material and the inner side of the bag packaging is opened. The first and second end seal portions 23 and 24 sealing the packaging materials are stopped. Accordingly, the disengagement of the zipper cores 11 and 12 stops when the opening of the bag 1 is stopped at the first and second end seal portions 23 and 24 before reaching the both end portions 15 and 16. Unreasonable force to disengage from the bag packaging material side does not act on both end portions 15 and 16 of the zipper cores 11 and 12, and damage to both end portions 15 and 16 of the zipper cores 11 and 12 can be prevented. it can.

  In this embodiment, the first end seal portions 23, 23 and the second end seal portions 24, 24 are end portions 21a, 21a of the first seal portion 21 located close to the end seal portions. Alternatively, since it is formed continuously with the second seal portions 22, 22, the opening of the packaging material is prevented at a position as close as possible to both ends 15, 16 of the zipper cores 11, 12, Forcible opening of the twelve crushed end portions 15 and 16 can be prevented. In addition, for the heat sealer for forming the first and second end seal portions, by continuously configuring the heat sealer that forms the attachment seal portion 20 (first seal portion 21 and second seal portion 22), The structure of the heat sealer and the process of forming the attachment seal portion and the end seal portion can be simplified.

Furthermore, the seal width W3 seen in the direction of the bag width of the second seal portions 22 and 22 is the longitudinal direction of the zipper cores 11 and 12 at both end portions 15 and 16 that are crushed in a state where the zipper cores 11 and 12 are engaged with each other. It is set as the dimension longer than the crushing width W2 along . Therefore, even if the packaging material inside the packaging of the bag 1 is picked and the bag 1 is opened, the opening of the bag 1 is stopped at the second end seal portions 24 and 24 formed with the width W3. That is, the bag 1 is surely stopped before the both end portions 15 and 16 of the zipper cores 11 and 12.

  FIG. 4 shows another embodiment of a packaging bag with a zipper according to the present invention. In this embodiment, the first seal portion 31 of the attachment seal portion 30 and the first end seal portions 33 and 33 are not continuous, and the second seal portion 32 and the second end seal of the attachment seal portion 30 are not continuous. The portions 34 and 34 are not continuous. In this structure, the attachment of the zipper 8 to the packaging material and the formation of the end seal portions 32 and 33 that limit the opening of the zipper 8 can be performed separately.

It is a front view which shows one Example of the bag packaging body with a zipper by this invention. It is sectional drawing of the bag packaging body with a zipper shown in FIG. It is a perspective view which shows the state which opened the bag packaging body with a zipper shown in FIG. It is a front view which shows another Example of the packaging bag with a zipper by this invention. FIG. 5 is a partial view showing a main part of a conventional packaging bag with a zipper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging bag with zipper 2 Body part 3 Ground end seal part 4 Top end seal part 5 Back sticker seal part 6 Opening space 8 Zipper 8
9 Convex Zipper Piece 10 Concave Zipper Piece 11 Convex Zipper Core 12 Concave Zipper Core 13, 14 Zipper Tape 13a, 14a Upper Edge 15, 16, Both Ends 20 Mounting Seal Part 21 First Seal Part 21a, 21a Both Ends 22 Second Seal portion 23 First end seal portion 24 Second end seal portion 25 Opening notch 25a Weak line 30 Attachment seal portion 31 First seal portion 32 Second seal portion 33 First end seal portion 34 Second end seal portion W1 Bag width W2 Crushing length W3 Width of second seal portions 22 and 32 P1 Bag package with zipper

Claims (6)

Zipper core capable interdigitate comprises a zipper and a corresponding zipper core and are integrally formed dichloride Ppatepu, zippers the zipper tape is attached by the mounting seal portion on the inner surface facing the bag packaging materials In the attached packaging bag,
The both ends of the zipper core are crushed in a state of being engaged with each other,
The mounting seal part is formed to extend from the zipper core toward the bag opening and extend along the bag width along the zipper core, and from the zipper core to the bag packaging inner side. And a second seal part formed at a position corresponding to both ends of the zipper core.
In the vicinity of the bag opening side of the zipper tape and the bag packaging inner side, and on the bag side edge corresponding to both ends of the zipper core, an end seal portion for sealing the bag packaging materials is formed. What
Zipper packaging bag with you and feature a. It said end seal portions, zipper packaging bag according to claim 1 you characterized in that it is formed continuously with the end or the second seal portion of the first seal portion. Wherein the first seal portion, claim you characterized in that it is formed at a position of the zipper core nearer the width direction edges of the said zipper tape at a portion excluding the end portion of the first seal part 2 A packaging bag with a zipper as described in 1. Wherein the said end seal portion that is formed continuously with the end portion of the first seal portion, a zipper packaging bag according to claim 2, easily openable means for opening tear consists is formed . The second seal portion, and characterized in that it is formed to the width of the wider dimension as viewed in the direction of the bag width than before Symbol crushed length along the longitudinal direction of the zipper core of said end portion of the zipper core The packaging bag with a zipper according to any one of claims 1 to 4 .   A product is stored inside using the packaging bag according to any one of claims 1 to 5, and the packaging bag can be resumed and reclosed by the zipper after opening the bag opening. Bag package with zipper.

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