JP5426889B2 - Packaging bag with zipper - Google Patents

Description

  The present invention relates to a packaging bag with a zipper provided with a zipper that enables the opening and sealing of the packaging bag to be repeated.

  A packaging bag for packaging various items such as food and pharmaceuticals is provided with a so-called zipper in which a band-like zipper is welded or integrally formed on the inner surface of the opening of the bag body in order to improve the retention of various items to be packaged. Packaging bags are used. In such a zippered packaging bag, the pair of male fitting parts and female fitting members are welded to the inner peripheral surface of the bag body in such a manner that the entire inner circumference of the opening is divided in half. The zipper is constituted by the pair of male fitting portions and the female fitting member that form a belt shape, and the packaging bag is repeatedly sealed and opened by switching between the fitted state and the non-fitted state of the zipper. Realized.

  When opening the above-described zippered packaging bag, the user opens the opening by widening the opening in such a manner that the male fitting member and the female fitting member are separated from each other. In order to forcibly stop such an opening operation at both ends in the longitudinal direction of the zipper described above, a pair of caulking portions to which the pair of male fitting portions and the female fitting member are crimped in a fitted state are provided. Since the opening operation is forcibly stopped by the pair of caulking portions, breakage of the bag body accompanying the opening operation is prevented.

  On the other hand, when sealing the packaging bag with a zipper mentioned above, a user pinches the zipper with a fingertip, and slides the fingertip over the full width in the longitudinal direction of the zipper, thereby the male fitting portion and the female fitting member. And fit. In such a sealing operation, since the fitting portion between the male fitting portion and the female fitting member is covered by the fingertip, the user senses whether or not the zipper is properly closed. It becomes difficult to do. Therefore, various proposals have been made for the zippered packaging bag described above in order to easily sense the fitting state during such a sealing operation.

  For example, in Patent Document 1, at least one of a male fitting portion and a female fitting member is structured discontinuously along its longitudinal direction. In the case of performing the sealing operation under such a configuration, since the male fitting portion and the female fitting member are discontinuously fitted, the displacement of the fitting portion that occurs each time the fitting is performed. Since the sound that accompanies the user's fingertips and the displacement that accompanies the fitting is transmitted to the user's auditory sense, whether or not the zipper is properly closed should be detected based on the tactile sensation and sound sense. It becomes.

JP-A-8-58811

By the way, in the packaging bag with a zipper as described above, the male fitting portion and the female fitting member are fitted in the entire opening portion of the bag body, so that a desired airtightness is obtained with respect to the bag body. Will be secured. In the technique described in Patent Document 1, although the male fitting part and the female fitting member are in contact with each other over the entire opening, the sensitivity relating to the fitting state of the zipper is improved. The fitting part is configured to be intermittent. Therefore, since continuous fitting over the entire opening is virtually impossible to achieve, the airtightness required for the bag body is forcibly impaired, greatly increasing the application range of packaging bags with zipper. I had to constrain.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a packaging bag with a zipper that can detect a fitting state during a sealing operation and can ensure airtightness in the bag body. Is to provide.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
The invention according to claim 1 is a packaging bag with a zipper provided with a zipper having a belt shape on the inner surface of the opening of the bag body, the zipper being formed to extend in the longitudinal direction of the zipper and mutually A pair of opposing fitting members that can be fitted and removed, and one of the fitting members is formed continuously in the longitudinal direction and can be fitted and removed with the other fitting member. And a second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member, wherein the first fitting member is fitted in the first fitting state. The fitting portion and the other fitting member are in close contact with each other in the longitudinal direction, and the one fitting member has the first fitting portion and the second fitting portion in the thickness direction. The gist is to form a laminated structure .

  During the sealing operation of the zippered packaging bag having the above-described configuration, the continuous fitting over the entire opening of the packaging bag is achieved by fitting the first fitting portion formed continuously and the other fitting member. As a result, the airtightness of the packaging bag is improved. Moreover, the fitting of the second fitting part formed discontinuously and the other fitting member enables sensing of the fitting state based on the tactile sensation and the sound feeling in the longitudinal direction.

  Thus, in the above configuration, the fitting part for ensuring the airtightness of the packaging bag during the sealing operation and the fitting part for detecting the fitting state during the sealing operation are separately provided for each function. By being formed, it is possible to achieve both the sensing of the fitting state during the zipper sealing operation and the securing of airtightness as a packaging bag.

Further , according to the above configuration, the fitting portion for ensuring the airtightness of the packaging bag during the sealing operation and the fitting portion for sensing the fitting state during the sealing operation are stacked in the thickness direction. Due to the structure, these fitting parts are formed separately for each function, and by the stepwise fitting of these fitting parts, the fitting state is detected and the packaging bag is used when the zipper is sealed. It is possible to achieve a suitable balance with ensuring airtightness.

Invention of Claim 2 is a packaging bag with a zipper of Claim 1 , Comprising: A said 1st fitting part is a 1st recessed part provided in the 1st base | substrate and extending in the said longitudinal direction. The second fitting portion is a second recess that is stacked in the thickness direction of the first recess and extends in the longitudinal direction, and the other fitting member is provided on a second base body and A first convex portion extending in the longitudinal direction so as to be detachable from the second concave portion, and a first convex portion stacked in the thickness direction of the first convex portion and extending in the longitudinal direction so as to be detachable from the first concave portion and the second concave portion. The gist is that the first concave portion and the second convex portion are in close contact with each other in the longitudinal direction when the pair of fitting members are fitted to each other.

According to the above configuration, the first concave portion and the second convex portion, which are fitting portions for ensuring the airtightness of the packaging bag during the sealing operation, and the fitting for sensing the fitting state during the sealing operation. Since the second concave portion and the first convex portion, which are the joint portions, are formed separately in each fitting member, each fitting is achieved while both sensing the fitting state and ensuring airtightness as a packaging bag. The degree of freedom in designing the joint member can also be expanded.

The invention according to claim 3, wherein a zipper packaging bag according to claim 2, wherein longitudinally from saw of the second convex portion width is the second protrusions in the shape smaller in its base side The width of the opening of the first concave portion viewed from the longitudinal direction is smaller than the width of the second convex portion viewed from the longitudinal direction.

  According to the above configuration, since the width of the opening of the first concave portion that is continuously formed and has the function of ensuring airtightness is smaller than the width of the second convex portion on the second base side, At the time of sealing, the first concave portion and the second convex portion enable continuous fitting over the entire opening of the packaging bag, and the degree of close contact when the first concave portion and the second convex portion are fitted is increased. As a result, the airtightness of the packaging bag can be improved.

Invention of Claim 4 is a packaging bag with a zipper of Claim 1 , Comprising: A said 1st fitting part is a 1st recessed part provided in the 1st base | substrate and extending in the said longitudinal direction. The second fitting portion is a second recess that is stacked in the thickness direction of the first recess and extends in the longitudinal direction, and the other fitting member is provided on a second base body and The first concave portion and the second concave portion have a convex portion extending in the longitudinal direction so that the first concave portion and the second concave portion can be fitted, and the first concave portion and the convex portion are in the longitudinal direction in a state where the pair of fitting members are fitted. The gist is to adhere closely throughout.

  According to the said structure, it is comprised by the convex part which the fitting part for ensuring the airtightness of the packaging bag at the time of sealing operation, and the fitting part for detecting the fitting state at the time of sealing operation are common. Therefore, the zipper structure can be simplified while both the sensing of the fitted state and the securing of the airtightness as the packaging bag are compatible.

Invention of Claim 5 is a packaging bag with a zipper of Claim 4 , Comprising: The said convex part is comprised so that the width | variety of the said convex part seen from the said longitudinal direction may become small in the base | substrate side. The gist is that the width of the opening of the first recess as viewed from the longitudinal direction is smaller than the width of the protrusion as viewed from the longitudinal direction.

  According to the above configuration, since the width of the opening of the first concave portion that is continuously formed and has a function of ensuring airtightness is smaller than the width of the convex portion on the second base side, sealing of the zipper Sometimes, these first recesses and projections enable continuous fitting over the entire opening of the packaging bag and increase the degree of adhesion when the second recesses and projections are fitted. The air tightness of the bag can be increased.

The invention according to claim 6 is a packaging bag with a zipper provided with a zipper having a belt shape on the inner surface of the opening of the bag body, the zipper being formed to extend in the longitudinal direction of the zipper and mutually A pair of opposing fitting members that can be fitted and removed, and one of the fitting members is formed continuously in the longitudinal direction and can be fitted and removed with the other fitting member. And a second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member, wherein the first fitting member is fitted in the first fitting state. The fitting portion and the other fitting member are in close contact with each other in the longitudinal direction, and the one fitting member has the first fitting portion and the second fitting portion in the width direction. it name a juxtaposed structure, the first fitting portion, the extending in the longitudinal direction provided on the first substrate 1 The second fitting portion is a second recess extending in the longitudinal direction in parallel with the first recess, and the other fitting member is provided on the second base. A first convex portion extending in the longitudinal direction so as to be detachable from the first concave portion; and a second convex portion extending parallel to the first convex portion and extending in the longitudinal direction so as to be detachable from the second concave portion. The first concave portion and the first convex portion are in close contact with each other in the longitudinal direction in a state where the pair of fitting members are fitted, and the width of the first convex portion as viewed from the longitudinal direction is The first convex portion is configured to be smaller on the base side, and the width of the first convex portion viewed from the longitudinal direction is larger than the width of the opening of the first concave portion viewed from the longitudinal direction. Is the gist.

During the sealing operation of the zippered packaging bag having the above-described configuration, the continuous fitting over the entire opening of the packaging bag is achieved by fitting the first fitting portion formed continuously and the other fitting member. As a result, the airtightness of the packaging bag is improved. Moreover, the fitting of the second fitting part formed discontinuously and the other fitting member enables sensing of the fitting state based on the tactile sensation and the sound feeling in the longitudinal direction. Thus, in the above configuration, the fitting part for ensuring the airtightness of the packaging bag during the sealing operation and the fitting part for detecting the fitting state during the sealing operation are separately provided for each function. By being formed, it is possible to achieve both the sensing of the fitting state during the zipper sealing operation and the securing of airtightness as a packaging bag.
Further , according to the above configuration, there are many fitting portions in the width direction for securing the airtightness of the packaging bag during the sealing operation and fitting portions for detecting the fitting state during the sealing operation. By adopting a row structure, these fitting parts are formed separately for each function, so that both the sensing of the fitting state and the securing of airtightness as a packaging bag can be achieved at the same time. The degree of freedom in design can be expanded.

On the other hand, according to the above configuration, the first concave portion and the first convex portion, which are fitting portions for ensuring the airtightness of the packaging bag during the sealing operation, and the fitting state during the sealing operation are sensed. Since the second concave portion and the second convex portion, which are the fitting portions, are formed separately in each fitting member, both the sensing of the fitting state and the securing of airtightness as a packaging bag are compatible. Thus, the degree of freedom in designing each fitting member can be expanded.

Furthermore, according to the above configuration, since the width of the opening of the first concave portion that is continuously formed and has a function of ensuring airtightness is smaller than the width of the first convex portion on the base side, the zipper is sealed. Sometimes, the first recesses and the first protrusions enable continuous fitting over the entire opening of the packaging bag and increase the degree of close contact between the first recesses and the first protrusions. As a result, the airtightness of the packaging bag can be improved.

The invention according to claim 7 is a packaging bag with a zipper provided with a zipper having a band shape on the inner surface in the opening of the bag body, the zipper being formed so as to extend in the longitudinal direction of the zipper and mutually A pair of opposing fitting members that can be fitted and removed, and one of the fitting members is formed continuously in the longitudinal direction and can be fitted and removed with the other fitting member. And a second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member, wherein the first fitting member is fitted in the first fitting state. The fitting portion and the other fitting member are in close contact with each other in the longitudinal direction, and the one fitting member has the first fitting portion and the second fitting portion in the width direction. None of juxtaposed structures, said second fitting portion, the cross section as viewed from the longitudinal direction to form a hook-like 1 A pair of first protrusions extending in the longitudinal direction arranged side by side in the width direction in the base, and the first fitting portion is surrounded by the first base and the pair of first protrusions. And the other fitting member is arranged in parallel in the width direction of the second base body and extends in the longitudinal direction so as to be detachable from the pair of first convex portions. A pair of second protrusions having a hook-like cross section, and a third protrusion provided between the pair of second protrusions in the second base and extending in the longitudinal direction so as to be detachable from the recess. And the concave portion and the third convex portion are in close contact with each other in the longitudinal direction in a state where the pair of fitting members are fitted.

During the sealing operation of the zippered packaging bag having the above-described configuration, the continuous fitting over the entire opening of the packaging bag is achieved by fitting the first fitting portion formed continuously and the other fitting member. As a result, the airtightness of the packaging bag is improved. Moreover, the fitting of the second fitting part formed discontinuously and the other fitting member enables sensing of the fitting state based on the tactile sensation and the sound feeling in the longitudinal direction. Thus, in the above configuration, the fitting part for ensuring the airtightness of the packaging bag during the sealing operation and the fitting part for detecting the fitting state during the sealing operation are separately provided for each function. By being formed, it is possible to achieve both the sensing of the fitting state during the zipper sealing operation and the securing of airtightness as a packaging bag.
Furthermore, according to the said structure, the recessed part and 3rd convex part which are fitting parts for ensuring the airtightness of the packaging bag at the time of sealing operation, and the fitting for detecting the fitting state at the time of sealing operation Since the first convex portion and the second convex portion, which are the joint portions, are formed separately in each fitting member, each of the fitting state sensing and ensuring airtightness as a packaging bag are compatible with each other. The degree of freedom in designing the fitting member can be expanded. In addition, since the concave portion for ensuring airtightness is configured by the pair of first convex portions and the first base for detecting the fitting state, a fitting portion for ensuring airtightness is provided separately. Such a zipper space-saving can be achieved as compared with the configuration to be provided.

The front view which shows the structure about 1st Embodiment of the packaging bag with a zipper concerning this invention. The perspective view which shows the perspective structure of the packaging bag with a zipper of the embodiment. (A), (b) Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 2nd Embodiment. (A), (b) Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 3rd Embodiment. (A), (b) Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 4th Embodiment. (A), (b) Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 5th Embodiment. Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 6th Embodiment. Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 7th Embodiment. Sectional drawing explaining the sealing operation | movement and opening operation | movement of the packaging bag with a zipper of the embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 8th Embodiment. The perspective view which shows the perspective structure about the packaging bag with a zipper of 9th Embodiment. Sectional drawing which shows the cross-section about other embodiment of the packaging bag with a zipper concerning this invention. Sectional drawing which shows the cross-section in the sealing state of the packaging bag with a zipper of other embodiment. Sectional drawing which shows the cross-section about other embodiment of the packaging bag with a zipper concerning this invention. Sectional drawing which shows the cross-section in the sealing state of the packaging bag with a zipper of other embodiment. Sectional drawing which shows the cross-section about other embodiment of the packaging bag with a zipper concerning this invention. Sectional drawing which shows the cross-section in the sealing state of the packaging bag with a zipper of other embodiment.

(First embodiment)
Hereinafter, an embodiment in which a packaging bag with a zipper according to the present invention is embodied will be described with reference to FIGS. 1 and 2. 1 is a front view showing a packaging bag with a zipper according to this embodiment, and FIG. 2 is a partial sectional view showing a sectional structure of a zipper portion provided in the packaging bag with a zipper.

  As shown in FIG. 1, a bag body 10 in a zippered packaging bag is formed by folding a single bag sheet 11 at the bottom, and being welded so as to seal both side ends sandwiching the folded direction. By forming a pair of welding parts 12, the top part is formed in the shape which becomes an opening part.

  On the inner surface of the opening 13 that is the top of the bag body 10, a pair of male fitting members 20 are formed in such a manner that the entire inner periphery of the opening 13 is divided into two equal parts, the front side and the rear side of the bag body 10. It welds so that the female fitting member 30 may oppose. A zipper 14 that can seal the opening 13 of the bag body 10 is constituted by the pair of male fitting members 20 and the female fitting member 30 that form a belt shape. The packaging bag with a zipper configured in this manner can be repeatedly sealed and opened by switching the zipper 14 between a fitted state and a non-fitted state. In the present embodiment, the longitudinal direction of the zipper 14 is the sealing direction, and the direction perpendicular to the sealing direction and along the thickness direction of the bag body 10 is the thickness direction relating to the zipper 14, and these sealing directions The direction orthogonal to the thickness direction is referred to as the width direction (fitting direction) of the zipper 14.

As the bag sheet 11, a thermoplastic resin molded body having airtightness can be used, and examples thereof include a resin sheet made of a polyethylene resin, a polypropylene resin, a polyamide resin, or the like. The configuration of such a bag body 10 can be appropriately selected in consideration of various conditions such as contents to be packaged and operating temperature.

  Next, the structure of the male fitting member 20 and the female fitting member 30 constituting the zipper 14 will be described with reference to FIGS. 2 is a perspective view showing a perspective structure of the male fitting member 20 and the female fitting member 30, and FIGS. 3 (a) and 3 (b) show a sealing operation and an opening operation of the zipper 14. FIG. It is sectional drawing which shows the fitting state of the accompanying male type | mold fitting member 20 and the female type | mold fitting member 30. FIG.

  As shown in FIG. 2, the male base body 21 which is the base body of the male fitting member 20 is welded in a band shape over one whole region in which the entire inner periphery of the opening 13 is divided into two equal parts. A first convex portion 22 that is continuous over the entire width in the sealing direction, which is the longitudinal direction of the male-side base 21, is integrally formed on the male-side base 21 on the side of the female fitting member 30 (including side). Also, on the inner side of the first convex portion 22, a second convex portion 23 that is also continuously formed over the entire width in the sealing direction is integrally formed in a form laminated on the first convex portion 22. That is, in the male fitting member 20, the first convex portion 22 and the second convex portion 23 form a laminated structure in the thickness direction of the zipper 14.

  Among these, the 1st convex part 22 has the 1st head 22a formed so that the fitting state with the female fitting member 30 can be hold | maintained, and this 1st head 22a is the inclusion side of the male side base | substrate 21. The first connecting portion 22b is formed integrally with the first connecting portion 22b. The first head portion 22a having a trapezoidal cross section is formed over the entire width of the male base 21 in the sealing direction, and the first connecting portion 22b having a smaller cross section and a rectangular shape than the first head portion 22a is also formed. The male side base 21 is formed over the entire width in the sealing direction.

  The second convex portion 23 formed on the inner side of the first convex portion 22 includes a second head portion 23a formed to express a fitting feeling with the female fitting member 30, and the second head portion. The second connecting portion 23b is formed integrally with the first convex portion 22 so as to be connected to the inner side of the first convex portion 22. The second head portion 23a having a trapezoidal cross section is also formed over the entire width of the male base body 21 in the sealing direction, and is smaller than the second head portion 23a and has a rectangular cross section. Is also formed over the entire width of the male substrate 21 in the sealing direction.

  In the male fitting member 20 having such a configuration, the relatively narrow first connecting portion 22b is sandwiched between the relatively wide male base 21 and the first head 22a. A pair of first fitting grooves G1 continuous in the sealing direction are formed on both sides of the first connecting portion 22b in the fitting direction. A pair of second fittings that are continuous in the sealing direction are sandwiched between the relatively narrow second connecting portion 23b between the relatively wide first head 22a and the second head 23a. Joint grooves G2 are formed on both sides of the second connecting portion 23b in the fitting direction.

  On the other hand, the female-side base 31 that is the base of the female fitting member 30 that is disposed so as to face the male fitting member 20 and is detachable from the male fitting member 20 has the entire inner periphery of the opening 13. It is welded in the form of a belt over the other half of the other half. A first recess 32 that is continuous in the sealing direction, which is the longitudinal direction of the female side base 31, is integrally formed on the female base body 31 on the side of the male fitting member 20 (including side). Further, a second recess 33 that is discontinuous in structure in the sealing direction is integrally formed on the inner side of the first recess 32 so as to be stacked on the first recess 32. That is, in the female fitting member 30, the first concave portion 32 and the second concave portion 33 form a laminated structure in the thickness direction, and each of the plurality of components constituting the second concave portion 33 is spaced in the sealing direction. They are arranged in the same sealing direction.

Among these, the 1st recessed part 32 is formed in the convex groove shape which protrudes from the female side base | substrate 31 to the inclusion side, and the cross section which consists of a size which can accommodate the said 2nd head part 23a of the male type fitting member 20 is rectangular. The internal space of the shape is continuously formed over the entire width in the sealing direction. A pair of first fitting pieces 32a narrowing the opening is formed in the opening, which is the end of the first recess 32 on the inner side, so that the fitting state with the second fitting groove G2 can be maintained. The first recess 32 is continuously formed over the entire width in the sealing direction. The pair of first fitting pieces 32a is, for example, a separation distance in the fitting direction so as to ensure hermeticity in a state where the male fitting member 20 and the female fitting member 30 are fitted. The first fitting piece width Wf1 is extended so as to be smaller than the second fitting groove width Wm2 which is the width of the second connecting portion 23b in the fitting direction (Wf1 <Wm2). According to the first recess 32 having such a configuration, in a state where the male fitting member 20 and the female fitting member 30 are fitted, the pair of first fitting pieces 32a and the pair of second fitting grooves G2. Are closely adhered to each other in the longitudinal direction, and as a result, the airtightness of the zipper 14 is sufficiently ensured.

  The second concave portion 33 formed on the inner side of the first concave portion 32 is formed by expanding the narrowed opening of the first concave portion 32 toward the inner side, and the male fitting member 20 is An internal space having a rectangular cross section capable of accommodating the first head portion 22a and the second head portion 23a is intermittently formed along the sealing direction. A pair of second fitting pieces 33a narrowing the opening is formed in the opening that is the end on the inner side of the second recess 33 so that the fitting state with the first fitting groove G1 can be maintained. The second recess 33 is formed intermittently over the entire width in the sealing direction. The pair of second fitting pieces 33a are separated in the fitting direction, for example, in order to obtain sensitivity at the time of fitting in the process in which the male fitting member 20 and the female fitting member 30 are fitted. The second fitting piece width Wf2 as the distance is larger than the first fitting piece width Wf1, and the first fitting groove width Wm1 and the second fitting as the width in the fitting direction of the first connecting portion 22b. It extends in the form equal to the groove width Wm2 (Wf2 = Wm1 = Wm2> Wf1). According to the second recess 33 having such a configuration, when the male fitting member 20 and the female fitting member 30 are fitted, the pair of second fitting pieces 33a and the first fitting grooves G1 And the sensitivity at the time of fitting between the pair of second fitting pieces 33a and the respective second fitting grooves G2 can be enhanced. Further, when the second fitting piece 33a in the state fitted with the first fitting groove G1 is moved from the first fitting groove G1 to the second fitting groove G2, excessive resistance is also suppressed. As a result, the operation of opening the zipper 14 is facilitated.

  In the zipper 14 configured in this way, the second recesses 33 that are intermittent in the sealing direction are formed for each fitting pitch D1 that is a predetermined interval, and the male fitting member 20 and the female fitting are formed. When the member 30 is fitted, the first and second convex portions 22 and 23 and the second concave portion 33 are intermittently fitted in the sealing direction. The fitting pitch D1 is an optimum interval for generating vibration and audible sound generated when the second concave portion 33 is fitted to the first convex portion 22 and the second convex portion 23. It is set to be.

  The material of the male fitting member 20 and the female fitting member 30 may be any material that can be welded to the bag sheet 11 and has plasticity, such as low density polyethylene, linear low density polyethylene, A thermoplastic resin such as high-density polyethylene, polypropylene, or polyamide can be used.

The sealing operation and opening operation of the zippered packaging bag having such a configuration will be described with reference to FIGS. First, when the sealing operation of the packaging bag is started, as shown in FIG. 3A, the second head portion 23 a of the second convex portion 23 opens at the second concave portion 33 at one end in the sealing direction of the zipper 14. The second fitting piece 33a is fitted into the pair of second fitting grooves G2, respectively. At this time, since the second recess 33 is formed discontinuously in the sealing direction, the fitting between the second fitting groove G2 and the second fitting piece 33a is made discontinuous in the sealing direction, and these are fitted. Vibration and audible sound are generated each time they are combined. These vibrations and audible sounds are largely reflected when the second fitting piece 33a abuts against the second fitting groove G2. In the present embodiment, since the second fitting piece width Wf2 and the second fitting groove width Wm2 are formed to be equal, the second fitting piece 33a expanded by the second head 23a is restored. The second fitting piece 33a and the second fitting groove G2 are abutted so that the kinetic energy of the second fitting piece 33a is maximized, and the fitting state is sensitive to the zipper sealing operation. Such vibration and audible sound are more prominent than when the second fitting piece width Wf2 is smaller than the second fitting groove width Wm2.

  Subsequently, as shown in FIG. 3 (b), the second head portion 23a enters the internal space of the first recess portion 32 so as to widen the opening of the first recess portion 32, and together with this, the first head portion. 22a widens the opening of the second recess 33 and enters the internal space of the second recess 33. And each 2nd fitting piece 33a is each fitted to a pair of 1st fitting groove G1, and each 1st fitting piece 32a is each fitted to a pair of 2nd fitting groove G2. By such fitting of the second fitting groove G2 and the first fitting piece 32a over the entire width of the zipper 14 in the sealing direction, the bag body 10 is in a sealed state. At this time, the first fitting piece 32a that is continuous in the sealing direction and the second fitting groove G2 that is also continuous in the sealing direction are continuously fitted over the entire opening 13 of the bag body 10. Fitting. Also in this case, since the fitting between the first fitting groove G1 and the second fitting piece 33a is discontinuous in the sealing direction, vibration and audible sound are generated every time they are fitted as described above. It comes to occur.

  When the opening operation of the packaging bag is started from this state, the fitting in each part is released in the reverse order to the sealing operation described above. That is, the second head 23a is retracted from the internal space of the first recess 32 so as to widen the opening of the first recess 32, and the second recess 33 is expanded so as to expand the opening of the second recess 33. The first head 22 a is retracted from the internal space of the recess 33. And each 2nd fitting piece 33a is each fitted to a pair of 2nd fitting groove | channel G2, and also in this case, a vibration and an audible sound will come to be produced whenever these are fitted. Subsequently, from the state in which each second fitting piece 33a is fitted in the pair of second fitting grooves G2, respectively, the opening in the second recessed portion 33 is expanded so that the inner space of the second recessed portion 33 is expanded. The second head portion 23a is retracted, whereby the bag body 10 is opened.

As described above, according to the packaging bag with a zipper according to the present embodiment, the following effects can be obtained.
(1) In the first embodiment, the second concave portion 33 constituting the female fitting member 30 is continuously formed in the sealing direction and the second concave portion 33 is formed in the sealing direction every predetermined fitting pitch D1. Formed discontinuously. Thereby, during the sealing operation of the zipper 14, the fitting between the second concave portion 33 and the second convex portion 23 is discontinuous. For this reason, it becomes possible to produce the vibration and audible sound which accompany these fitting, and the fitting state can be sensed through tactile sensation and sound feeling. Further, when the zipper 14 is sealed, continuous fitting over the entire opening 13 of the packaging bag is performed by fitting the second fitting groove G2 formed continuously with the first fitting piece 32a. By doing so, it becomes possible to improve the airtightness at the time of zipper sealing.

  Thus, in 1st Embodiment, the 2nd recessed part 33 for ensuring the sensitivity of a fitting state in the case of sealing operation, and the 2nd recessed part 33 for ensuring the airtightness of a packaging bag are for every function. By forming each separately, it is possible to achieve both the ensuring of the sensitivity of the fitted state during the zipper sealing operation and the securing of the airtightness as a packaging bag.

(2) In the first embodiment, the first fitting piece width Wf1, which is the opening width of the first recess 32, is smaller than the second fitting groove width Wm2 fitted to the first fitting piece 32a. It was configured as follows. Thus, when the zipper 14 is sealed, the second convex portion 23 and the second concave portion 33 having a function of ensuring airtightness are in close contact with each other in the longitudinal direction, and as a result, airtightness as a packaging bag. Can be further improved.

(3) In the first embodiment, the second fitting piece width Wf2, which is the opening width of the second recess 33, is equal to the first fitting groove width Wm1 and the second fitting groove width Wm2. Configured. Thereby, during the zipper sealing operation, vibration and audible sound generated when the second concave portion 33 formed discontinuously in the sealing direction and the second convex portion 23 formed continuously in the sealing direction are fitted together. Can be even more pronounced. Therefore, it is possible to further enhance the sensitivity of the fitted state during the zipper sealing operation.
(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5A and 5B. In addition, this 2nd Embodiment forms the 2nd convex part 23 in 1st Embodiment discontinuously in the sealing direction, and functions as a sensing of the fitting state at the time of sealing operation of the zipper 14 The function is mainly transferred to the male fitting member 20, and the function of ensuring airtightness is transferred to the first convex part 22 and the second concave part 33 which are mainly formed continuously in the sealing direction. Other configurations are the same as those in the first embodiment. 4 and 5 (a) and 5 (b), the same elements as those shown in FIGS. 2 and 3 (a) and 3 (b) are denoted by the same reference numerals. They are shown, and redundant explanations of those elements are omitted.

  FIG. 4 shows a perspective structure of a packaging bag with a zipper according to the second embodiment as a diagram corresponding to FIG. That is, in the present embodiment, as shown in FIG. 4, the male fitting member 20 constituting the zipper 14 has a belt-like male side base 21 welded to one inner surface of the bag sheet 11 as a base material. A first protrusion 22 formed continuously in the sealing direction, which is the longitudinal direction of the male base 21, and a second protrusion 23 formed discontinuously on the first protrusion 22 in the seal direction; It is constituted by.

  On the other hand, the female fitting member 30 constituting the zipper 14 has a strip-shaped female base 31 welded to the other inner surface of the bag sheet 11 as a base material, and a sealing direction that is the longitudinal direction of the female base 31. The first recess 32 is continuously formed on the first recess 32, and the second recess 33 is continuously formed on the first recess 32 in the same longitudinal direction.

  Among these, the 1st convex part 22 and the 2nd recessed part 33 enable these continuous fitting by being continuously formed in a sealing direction, respectively, and the function which mainly ensures airtightness. have. In the present embodiment, for example, the width in the fitting direction of the first connecting portion 22b constituting the first convex portion 22 in order to increase the degree of adhesion between the first convex portion 22 and the second concave portion 33 when the zipper 14 is sealed. The first fitting groove width Wm1 is larger than the second fitting piece width Wf2 which is the width of the opening of the second recess 33 in the fitting direction (Wf2 <Wm1).

  On the other hand, since the second convex portion 23 is formed discontinuously in the sealing direction, the second convex portion 23 has a function of ensuring the sensitivity of the fitted state mainly through tactile sensation and audibility during the sealing operation of the zipper 14. . In this embodiment, in order to improve the sensitivity of the fitting state during the sealing operation of the zipper 14, for example, the second fitting groove which is the width in the fitting direction of the second connecting portion 23b constituting the second convex portion 23. The width Wm2 and the first fitting piece width Wf1, which is the width in the fitting direction of the opening of the second recess 33, are formed to be equal (Wf1 = Wm2).

In the present embodiment, the first fitting groove width Wm1 is formed so as to be larger than the second fitting groove width Wm2 (Wm2 <Wm1), and the first fitting piece width Wf1 is a second value. It is formed so as to be equal to the fitting piece width Wf2 (Wf1 = Wf2). According to such a configuration, the structure of the female fitting member 30 can be simplified as much as the first fitting piece width Wf1 and the second fitting piece width Wf2 are made equal. In order to obtain the relationship, it is only necessary to adjust the shape of the male fitting member 20.

  Under such a premise, the sealing operation and the opening operation of the packaging bag with a zipper according to the present embodiment will be described with reference to FIGS. First, when the sealing operation of the packaging bag is started, as shown in FIG. 5A, the second fitting piece 33a is once fitted into the second fitting groove G2 at one end in the sealing direction of the zipper 14. . At this time, since the second head 23a of the second convex portion 23 is formed discontinuously in the sealing direction, the fitting between the second fitting piece 33a and the second fitting groove G2 is performed in the sealing direction. It is made discontinuous, and vibrations and audible sounds are generated each time they are fitted. Next, as shown in FIG. 5B, the second fitting piece 33a is fitted into the first fitting groove G1, and the first fitting piece 32a is fitted into the second fitting groove G2. When the fitting between the second fitting groove G2 and the first fitting piece 32a is performed over the entire width of the zipper 14 in the sealing direction, the bag body 10 is in a sealed state. At this time, since the first fitting groove G1 formed continuously in the sealing direction and the second fitting piece 33a are fitted, continuous fitting over the entire opening 13 of the bag body 10 is performed. Made.

  When the opening operation of the packaging bag is started from this state, the fitting in each part is released in the reverse order to the sealing operation described above. That is, as in the first embodiment, the second head 23a and the first head are opened from the internal space of the first recess 32 and the second recess 33 so as to widen the openings of the first recess 32 and the second recess 33. The part 22a moves backward. And each 2nd fitting piece 33a is each fitted to a pair of 2nd fitting groove | channel G2, and also in this case, a vibration and an audible sound will come to be produced whenever these are fitted. Subsequently, from the state in which each second fitting piece 33a is fitted in the pair of second fitting grooves G2, respectively, the opening in the second recessed portion 33 is expanded so that the inner space of the second recessed portion 33 is expanded. The second head portion 23a is retracted, whereby the bag body 10 is opened.

  As described above, the zippered packaging bag according to the second embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, the following Such effects can be obtained.

(4) According to the second embodiment, since the second convex portion 23 is formed discontinuously in the sealing direction, the function of sensing the fitting state during the sealing operation is a male fitting member. 20 Thereby, it becomes possible to raise the freedom degree as a packaging bag with a zipper.
(Third embodiment)
A third embodiment of the present invention will be described below with reference to FIGS. 6, 7A and 7B. In the third embodiment, the male fitting member is configured by one convex portion that is continuous in the sealing direction. In other configurations, the configuration is similar to that of the first embodiment. Yes. 6 and 7 (a) and 7 (b), the same elements as those shown in FIGS. 2 and 3 (a) and 3 (b) are denoted by the same reference numerals. They are shown, and redundant explanations of those elements are omitted.

  FIG. 6 shows a perspective structure of a packaging bag with a zipper according to the third embodiment as a diagram corresponding to FIG. That is, in this embodiment, as shown in FIG. 6, the male base body 41 that is the base body of the male fitting member 40 has a belt-like shape over one whole region in which the entire inner periphery of the opening 13 is divided into two equal parts. It has been welded. The male fitting member 40 is formed by one convex portion 42 that is integrally formed on the inner side of the male side base 41 and continues in the sealing direction that is the longitudinal direction of the male side base 41.

The convex portion 42 is integrally formed by connecting a head portion 42 a formed so as to be able to hold the fitting state with the female fitting member 30 and the head portion 42 a to the inner side of the male base 21. It is comprised by the connection part 42b formed in this. A head portion 42 a having a trapezoidal cross section is a male base 41.
The connecting portion 42b, which is smaller than the head portion 42a and has a rectangular cross section, is also formed over the entire width of the male substrate 21 in the sealing direction. In the male fitting member 40 having such a configuration, the relatively narrow connecting portion 42b is sandwiched between the relatively wide male side base 41 and the head portion 42a, so that the sealing direction is increased. A pair of continuous fitting grooves G3 are formed on both sides of the connecting portion 42b in the fitting direction.

  On the other hand, the pair of first fitting pieces 32a in the female-side base 31 is, for example, fitted so as to ensure hermeticity in a state where the male fitting member 40 and the female fitting member 30 are fitted. The first fitting piece width Wf1, which is a separation distance in the direction, extends so as to be smaller than the fitting groove width Wm3, which is the width in the fitting direction of the connecting portion 42b (Wf1 <Wm2). According to the first recess 32 having such a configuration, in a state where the male fitting member 40 and the female fitting member 30 are fitted, the pair of first fitting pieces 32a and the pair of fitting grooves G3 are formed. As a result, the airtightness in the zipper 14 is sufficiently secured. In addition, the pair of second fitting pieces 33a in the female base body 31 can be sensed during fitting in the process in which the male fitting member 40 and the female fitting member 30 are fitted. The second fitting piece width Wf2 that is the separation distance in the fitting direction is larger than the first fitting piece width Wf1 and equal to the fitting groove width Wm3 that is the width in the fitting direction of the connecting portion 42b. (Wf2 = Wm3> Wf1). According to the second recess 33 having such a configuration, when the male fitting member 40 and the female fitting member 30 are fitted, the pair of second fitting pieces 33a, the pair of fitting grooves G3, Sensitivity at the time of fitting in between can be improved.

  The sealing operation and opening operation of the zippered packaging bag having such a configuration will be described with reference to FIGS. 7 (a) and 7 (b). First, in the sealing operation of the packaging bag, as shown in FIG. 7A, the head 42a of the convex portion 42 is moved into the internal space of the second concave portion 33 so that the opening in the second concave portion 33 is expanded. Then, each second fitting piece 33a is fitted into the pair of fitting grooves G3. At this time, since the second recess 33 is formed discontinuously in the sealing direction, the fitting groove G3 and the second fitting piece 33a are discontinuously fitted in the sealing direction, and these are fitted. Vibration and audible sound are generated every time. These vibrations and audible sounds are largely reflected when the second fitting piece 33a hits the fitting groove G3. In the present embodiment, since the second fitting piece width Wf2 and the fitting groove width Wm3 are formed to be equal, the second fitting piece width Wf2 is formed smaller than the fitting groove width Wm3. In comparison, these vibrations and audible sounds are more prominent.

  Subsequently, as shown in FIG. 7B, the head portion 42a of the convex portion 42 enters the inner space of the first concave portion 32 so as to widen the opening of the first concave portion 32, and a pair of fittings are performed. The first fitting piece 32a is newly fitted into the same pair of fitting grooves G3 while maintaining the fitting state between the groove G3 and each second fitting piece 33a. When the male fitting member 40 and the female fitting member 30 are fitted, the bag body 10 is sealed. At this time, the first fitting piece 32a that is continuous in the sealing direction and the second fitting groove G2 that is also continuous in the sealing direction are continuously fitted over the entire opening 13 of the bag body 10. Fitting.

  When the opening operation of the packaging bag is started from this state, the fitting between the male fitting member 40 and the female fitting member 30 is released in the reverse order of the above-described sealing operation. That is, the head 42a is retracted from the inner space of the first recess 32 so as to widen the opening of the first recess 32, and only the second fitting pieces 33a are fitted in the pair of fitting grooves G3, respectively. To do. Even in this case, vibration and audible sound are generated each time they are fitted. Subsequently, from the state in which each second fitting piece 33a is fitted in each of the pair of fitting grooves G3, the head from the inner space of the second recess 33 is expanded so as to widen the opening in the second recess 33. 42a retreats, and thereby the bag body 10 is opened.

  As described above, the packaging bag with a zipper according to the third embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, as described below. An effect comes to be acquired.

(5) According to the third embodiment, the male fitting member 40 is configured only by the convex portions 42 formed continuously in the sealing direction. As a result, it is possible to achieve a suitable coexistence of sensing the fitting state during the zipper sealing operation and ensuring airtightness as a packaging bag with a simpler structure.
(Fourth embodiment)
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIGS. 8, 9A and 9B. In the fourth embodiment, the female fitting member is configured by one concave portion continuous in the sealing direction, and the other configurations are configured in accordance with the second embodiment. . 8 and 9 (a) and 9 (b), the same elements as those shown in FIGS. 2 and 3 (a) and 3 (b) are denoted by the same reference numerals. They are shown, and redundant explanations of those elements are omitted.

  FIG. 8 shows a perspective structure of a packaging bag with a zipper according to the fourth embodiment as a diagram corresponding to FIG. The female-side base 51, which is the base of the female fitting member 50 that is disposed so as to face the male fitting member 20 and is detachable from the male fitting member 20, has an entire inner periphery of the opening 13 divided into two equal parts. It is welded in the form of a belt over the entire other area. The female fitting member 50 is formed by a single recess 52 that is integrally formed on the lower side of the female base 51 and continues in the sealing direction, which is the longitudinal direction of the female base 51.

  The concave portion 52 is formed in a convex groove shape protruding from the female base 51 to the inner side, and can accommodate the first convex portion 22 and the second convex portion 23 constituting the male fitting member 20 at a time. An internal space having a rectangular cross section is continuously formed over the entire width in the sealing direction. The opening which is the end on the inner side of the recess 52 is narrowed so that the fitting state between the first fitting groove G1 and the second fitting groove G2 of the male fitting member 20 can be maintained. A pair of fitting pieces 52 a are formed continuously over the entire width of the recess 52 in the sealing direction. The pair of fitting pieces 52a are, for example, fittings having a separation distance in the fitting direction so as to ensure hermeticity when the male fitting member 20 and the female fitting member 50 are fitted. The one-sided width Wf3 is equal to the second fitting groove width Wm2 and extends so as to be smaller than the first fitting groove width Wm1 (Wf3 = Wm2 <Wm1). According to the recess 52 having such a configuration, in a state where the male fitting member 20 and the female fitting member 50 are fitted, the pair of fitting pieces 52a and the first fitting grooves G1 are in the longitudinal direction. As a result, the airtightness of the zipper 14 is sufficiently secured. Further, when the male fitting member 20 and the female fitting member 50 are fitted, the sensitivity at the time of fitting between the pair of fitting pieces 52a and each second fitting groove G2 can be improved. it can.

Under such a premise, the sealing operation and the opening operation of the zippered packaging bag according to the present embodiment will be described with reference to FIGS. 9 (a) and 9 (b). First, in the sealing operation of the packaging bag, as shown in FIG. 9A, the second head 23a of the second convex portion 23 is expanded into the inner space of the concave portion 52 so as to widen the opening in the concave portion 52. Enters, and the fitting piece 52a is fitted into the second fitting groove G2. At this time, since the second head portion 23a is formed discontinuously, the fitting between the second fitting groove G2 and the fitting piece 52a is made discontinuously. Audible sound is generated. Subsequently, as shown in FIG. 9B, the first head portion 22a of the first convex portion 22 enters the internal space of the concave portion 52 so as to widen the opening in the concave portion 52, and the first fitting is performed. The fitting piece 52a is fitted into the groove G1. When the first fitting groove G1 and the fitting piece 52a are fitted, the male fitting member 20 and the female fitting member 50 are fitted over the entire opening 13 of the bag body 10. When the male fitting member 20 and the female fitting member 50 are thus fitted, the bag body 10 is in a sealed state. At this time, continuous fitting over the entire opening 13 of the bag body 10 is performed by fitting the first fitting groove G1 and the recessed portion 52 formed continuously.

  When the opening operation of the packaging bag is started from this state, the fitting between the male fitting member 20 and the female fitting member 50 is released in the reverse order of the above-described sealing operation. That is, as the opening of the recess 52 is expanded, the first head 22a is retracted from the inner space of the recess 52, and the fitting pieces 52a are fitted in the pair of second fitting grooves G2, respectively. Then, the fitting pieces 52a are fitted into the pair of second fitting grooves G2, respectively, and also in this case, vibration and audible sound are generated each time they are fitted. Subsequently, from the state in which the fitting pieces 52a are respectively fitted in the pair of second fitting grooves G2, the second head portion 23a is retracted from the internal space of the concave portion 52 so as to widen the opening in the concave portion 52. As a result, the bag 10 is opened.

  As described above, the packaging bag with a zipper according to the fourth embodiment can obtain an effect according to the effect of the second embodiment, and can further obtain the following effect.

(6) According to the fourth embodiment, the female fitting member 50 is configured only by the recesses 52 formed continuously in the sealing direction. As a result, it is possible to achieve a suitable coexistence of sensing the fitting state during the zipper sealing operation and ensuring airtightness as a packaging bag with a simpler structure.
(Fifth embodiment)
Hereinafter, a fifth embodiment of the present invention will be described with reference to FIGS. 10 and 11.

  In addition, this 5th Embodiment comprises a male fitting member by the 1st convex part and 2nd convex part which were arranged in parallel by the sealing direction, and the 1st recessed part which continues in the sealing direction similarly, A female fitting member is configured by a second recess that is discontinuously arranged in the first recess, and the other configurations are the same as those of the first embodiment.

  FIG. 10 shows a perspective structure of a packaging bag with a zipper according to the fifth embodiment as a diagram corresponding to FIG. That is, in the present embodiment, as shown in FIG. 10, the male fitting member 60 constituting the zipper 14 has a belt-like male side base 61 welded to one inner surface of the bag sheet 11 as a base material. A first protrusion 62 formed continuously in the sealing direction, which is the longitudinal direction of the male base body 61, and a first protrusion formed continuously over the entire width in the seal direction in parallel with the first protrusion 62. 2 convex portions 63. The male base 61, which is the base of the male fitting member 60, is welded in the form of a belt over one entire region where the entire inner periphery of the opening 13 is divided into two equal parts. A first convex portion 62 that is continuous over the entire width in the sealing direction, which is the longitudinal direction of the male-side base 61, is integrally formed on the male-side base 61 on the side of the female fitting member 70 (internal side). In addition, a second convex portion 63 that is continuous across the entire width in the sealing direction is formed in parallel with the first convex portion 62. That is, in the male fitting member 60, the first convex portion 62 and the second convex portion 63 form a parallel structure in the cross-sectional direction.

  Among these, the 1st convex part 62 is the 1st head part 62a formed so that the fitting state with the female fitting member 70 can be hold | maintained, and this 1st head part 62a is the inclusion side of the male side base | substrate 61. The first connecting portion 62b is formed integrally with the first connecting portion 62b. The first head portion 62a having a trapezoidal cross section is formed over the entire width of the male base body 61 in the sealing direction, and the first connecting portion 62b having a rectangular cross section smaller than the first head portion 62a is also formed. It is formed over the entire width of the male base body 61 in the sealing direction.

The second convex portion 63 formed in parallel with the first convex portion 62 includes a second head portion 63a formed to express a fitting feeling with the female fitting member 70, and the second head portion. The second connecting portion 63b is formed integrally with the portion 63a connected to the inner side of the male base 61. The second head 63a having a trapezoidal cross section is formed over the entire width of the male base 61 in the sealing direction in parallel with the first head 62a, and is smaller than the second head 63a and has a rectangular cross section. The second connecting portion 63b forming the same is formed over the entire width of the male base body 61 in the sealing direction in parallel with the first connecting portion 62b. In the male fitting member 60 having such a configuration, the relatively narrow first connecting portion 62b is sandwiched between the relatively wide male base 61 and the first head 62a. A pair of first fitting grooves G1 continuous in the sealing direction are formed on both sides of the first connecting portion 62b in the fitting direction. In addition, a relatively narrow second connecting portion 63b is sandwiched between the relatively wide male base 61 and the second head 63a, whereby a pair of second fittings that are continuous in the sealing direction. Grooves G2 are formed on both sides of the second connecting portion 63b in the fitting direction.

  On the other hand, the female inner base 71 which is the base of the female fitting member 70 which is disposed so as to face the male fitting member 60 and is detachable from the male fitting member 60 has the entire inner periphery of the opening 13. It is welded in the form of a belt over the other half of the other half. On the female fitting base 71 side (inner side) of the female base 71, a first concave portion that is disposed opposite to the first convex portion 62 and continues in the sealing direction, which is the longitudinal direction of the female base 71. 72 is integrally formed. Further, a second recess 73 is integrally formed in the female base 71 in a form coupled to the first recess 72 in parallel. The second concave portion 73 is disposed opposite to the second convex portion 63 and is discontinuously formed on the structure in the sealing direction. That is, in the female fitting member 70, the first recess 72 and the second recess 73 form a parallel structure in the cross-sectional direction.

  Among these, the 1st recessed part 72 is formed in the convex-groove shape which protrudes from the female side base | substrate 71 to the inclusion side, becomes a size which can accommodate the said 1st head 62a of the male fitting member 60, and has a rectangular cross section. The internal space of the shape is continuously formed over the entire width in the sealing direction. A pair of first fitting pieces 72a narrowing the opening to be able to maintain the fitting state with the first fitting groove G1 in the opening which is the end on the inner side of the first recess 72, and 72b is formed continuously over the entire width of the first recess 72 in the sealing direction. Of these, the tip of the first fitting piece 72b on the second recess 73 side is tapered and has a curved cross section so that the first head 62a of the male fitting member 60 is guided to the internal space of the first recess 72. It is extended in the form. The pair of first fitting pieces 72a and 72b is, for example, in the fitting direction so as to ensure hermeticity when the male fitting member 60 and the female fitting member 70 are fitted. The first fitting piece width Wf1 that is the separation distance is extended so as to be smaller than the first fitting groove width Wm1 that is the width in the fitting direction of the first connecting portion 62b (Wf1 <Wm1). According to the first recess 72 having such a configuration, in a state where the male fitting member 60 and the female fitting member 70 are fitted, the pair of first fitting pieces 72a and 72b and the pair of first fittings. The groove G1 is in close contact with the entire length thereof, and the airtightness of the zipper 14 is sufficiently ensured.

The second concave portion 73 formed in parallel with the first concave portion 72 is formed in a convex groove shape protruding from the female base 71 to the inner side, and the second head constituting the male fitting member 60. An internal space having a rectangular cross section capable of accommodating the portion 63a is intermittently formed along the sealing direction. A pair of second fitting pieces 73a narrowing the opening to be able to maintain the fitting state with the second fitting groove G2 in the opening which is the end on the inner side of the second recess 73, and 73b is formed intermittently over the entire width of the second recess 73 in the sealing direction. Among these, the tip of the second fitting piece 73b on the first concave portion 72 side is tapered so that the cross section is curved in such a way as to guide the second head 63a of the male fitting member 60 to the internal space of the second concave portion 73. It is extended in the form. The pair of second fitting pieces 73a and 73b are, for example, fitted so that the mating sensitivity can be obtained in the process in which the male fitting member 60 and the female fitting member 70 are fitted. A second fitting piece width Wf2 which is a separation distance in the mating direction is larger than the first fitting piece width Wf1, and the second connecting portion 63b.
The second fitting groove width Wm2 that is the width in the fitting direction and the first fitting groove width Wm1 that is the width in the fitting direction of the first connecting portion 62b are extended ( Wf2 = Wm2 = Wm1> Wf1). According to the second recess 73 having such a configuration, when the male fitting member 60 and the female fitting member 70 are fitted, the pair of second fitting pieces 73a and 73b and the respective second fitting grooves. Sensitivity at the time of fitting with G2 can be enhanced. In addition, when the second fitting pieces 73a and 73b in the state fitted with the second fitting groove G2 are fitted and removed from the second fitting groove G2, excessive resistance can be suppressed.

  In the female fitting member 70 configured as described above, the first concave portion 72 and the second concave portion 73 are coupled and arranged in parallel, so that the first convex portion 62 and the second convex portion that are arranged in parallel are formed. A common convex portion 74 that can be accommodated in an accommodation space formed between the portion 63 and the portion 63 is formed over the entire width in the sealing direction. Then, the first fitting piece 72b and the second fitting piece 73b are extended in such a manner that the cross-sections of the distal ends thereof are curved and tapered, so that the male fitting member 60 and the female fitting member 70 Can be reduced when the common convex portion 74 is accommodated in the accommodating space between the first convex portion 62 and the second convex portion 63 and the zipper 14 is sealed. Can be made smoother.

  Under such a premise, the sealing operation and the opening operation of the zippered packaging bag according to the present embodiment will be described with reference to FIG. First, when the sealing operation of the packaging bag is started, as shown in FIG. 11, the first head 62 a of the first convex portion 62 widens the opening in the first concave portion 72 at one end in the sealing direction of the zipper 14. In this way, it enters the internal space of the first recess 72, and then the first fitting pieces 72a and 72b are fitted into the pair of first fitting grooves G1, respectively. Similarly, the second head 63a of the second convex portion 63 enters the internal space of the second concave portion 73 so as to widen the opening in the second concave portion 73, and then enters the pair of second fitting grooves G2. The second fitting pieces 73a and 73b are fitted respectively. At this time, since the second recess 73 is formed discontinuously in the sealing direction, the fitting between the second fitting groove G2 and the second fitting pieces 73a and 73b is made discontinuous in the sealing direction. Vibration and audible sound are generated each time the is fitted. These vibrations and audible sounds are largely reflected when the second fitting pieces 73a and 73b collide with the second fitting groove G2. In the present embodiment, since the second fitting piece width Wf2 and the second fitting groove width Wm2 are formed equal, the second fitting piece width Wf2 is smaller than the second fitting groove width Wm2. These vibrations and audible sounds are more prominent than when formed. At the same time, the first fitting pieces 72a and 72b that are continuous in the sealing direction are fitted to the first fitting groove G1 that is continuous in the sealing direction, and the first protrusion 62 and the first A continuous fitting over the entire opening 13 of the bag body 10 is performed in such a manner that the common convex portion 74 is accommodated in the accommodating space between the concave portion 72.

  When the opening operation of the packaging bag is started from this state, the fitting between the male fitting member 60 and the female fitting member 70 is released in the reverse order of the above-described sealing operation. That is, the opening of the first recess 72 is expanded so that the first head 62 a moves backward from the internal space of the first recess 72 and the opening of the second recess 73 is expanded. The second head 63a is retracted from the inner space of the bag, and the bag body 10 is thereby opened.

  As described above, the packaging bag with a zipper according to the fifth embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, as described below. An effect comes to be acquired.

(7) According to the fifth embodiment, the male fitting member 60 is configured such that the first convex portion 62 and the second convex portion 63 are arranged in parallel, and the first concave portion 72, the second concave portion 73, The female fitting member 70 is formed in the form in which they are arranged in parallel. Thereby, it becomes possible to raise the freedom degree as a packaging bag with a zipper. Further, in order to achieve both compatibility of the sense of fitting state during the zipper sealing operation and airtightness as a packaging bag, the male fitting member 60 and the female fitting member 70 It becomes possible to reduce the thickness of the zipper 14 at the time of fitting.
(Sixth embodiment)
Hereinafter, a sixth embodiment of the present invention will be described with reference to FIGS. 12 and 13.

  In addition, this 6th Embodiment forms the 2nd recessed part 73 in 5th Embodiment continuously in a sealing direction, and forms the 2nd convex part 63 discontinuously in a sealing direction, and thereby the zipper 14 The function as sensing of the fitting state during the sealing operation is mainly transferred to the male fitting member 60, and the other configurations are the same as those in the fifth embodiment.

  FIG. 12 shows a perspective structure of a packaging bag with a zipper according to the sixth embodiment as a diagram corresponding to FIG. In FIG. 12 and FIG. 13, the same elements as those shown in FIG. 10 and FIG. 11 are given the same reference numerals, and duplicate descriptions of these elements are omitted. .

  That is, in the present embodiment, as shown in FIG. 12, the male fitting member 60 constituting the zipper 14 has a belt-like male side base 61 welded to one inner surface of the bag sheet 11 as a base material. A first protrusion 62 formed continuously in the sealing direction, which is the longitudinal direction of the male base 61, and a second protrusion formed discontinuously in the seal direction in parallel with the first protrusion 62. Part 63.

  On the other hand, the female fitting member 70 constituting the zipper 14 has a strip-shaped female base 71 welded to the other inner surface of the bag sheet 11 as a base material, and a sealing direction that is the longitudinal direction of the female base 71. The first recess 72 is formed continuously with the first recess 72, and the second recess 73 is formed continuously in the same longitudinal direction in parallel with the first recess 72.

  Among these, the 1st convex part 62 and the 1st recessed part 72 enable these continuous fitting by forming continuously in a sealing direction, respectively, and mainly as ensuring airtightness. It has a function. In the present embodiment, for example, the width in the fitting direction of the first connecting portion 62b constituting the first convex portion 62 in order to increase the degree of adhesion between the first convex portion 62 and the first concave portion 72 when the zipper 14 is sealed. The first fitting groove width Wm1 is larger than the first fitting piece width Wf1 which is the width of the opening of the first recess 72 in the fitting direction (Wf1 <Wm1).

  On the other hand, since the second convex portion 63 is formed discontinuously in the sealing direction, the second convex portion 63 has a function of ensuring the sensitivity of the fitting state mainly through tactile sensation and auditory sensation during the sealing operation of the zipper 14. . In the present embodiment, the second fitting groove, which is the width in the fitting direction of the second connecting portion 63b constituting the second convex portion 63, for example, in order to enhance the sensitivity of the fitting state during the sealing operation of the zipper 14. The width Wm2 and the second fitting piece width Wf2, which is the width in the fitting direction of the opening of the second recess 73, are formed to be equal (Wf2 = Wm2).

  In the present embodiment, the first fitting groove width Wm1 is formed so as to be larger than the second fitting groove width Wm2 (Wm2 <Wm1), and the first fitting piece width Wf1 is a second value. It is formed so as to be equal to the fitting piece width Wf2 (Wf1 = Wf2). According to such a configuration, the structure of the female fitting member 70 can be simplified as much as the first fitting piece width Wf1 and the second fitting piece width Wf2 are equalized, and the above-described width is small or large. In order to obtain the relationship, it is only necessary to adjust the shape of the male fitting member 60.

Under such a premise, the sealing operation and the opening operation of the zippered packaging bag according to the present embodiment will be described with reference to FIG. First, when the sealing operation of the packaging bag is started, FIG.
As shown, the first head 62a of the first convex portion 62 at one end in the sealing direction of the zipper 14 enters the internal space of the first concave portion 72 so as to expand the opening in the first concave portion 72, Thereafter, the first fitting pieces 72a and 72b are fitted into the pair of first fitting grooves G1, respectively. Similarly, the second head 63a of the second convex portion 63 enters the internal space of the second concave portion 73 so as to widen the opening in the second concave portion 73, and then enters the pair of second fitting grooves G2. The second fitting pieces 73a and 73b are fitted respectively. At this time, since the second convex portion 63 is formed discontinuously in the sealing direction, the fitting between the second fitting groove G2 and the second fitting pieces 73a and 73b is made discontinuous in the sealing direction, Every time they are fitted, vibration and audible sound are generated. These vibrations and audible sounds are largely reflected when the second fitting pieces 73a and 73b collide with the second fitting groove G2. In the present embodiment, since the second fitting piece width Wf2 and the second fitting groove width Wm2 are formed equal, the second fitting piece width Wf2 is smaller than the second fitting groove width Wm2. These vibrations and audible sounds are more prominent than when formed. At the same time, the first fitting pieces 72a and 72b that are continuous in the sealing direction and the first fitting groove G1 that is also continuous in the sealing direction are fitted, and the first convex portion 62 and A continuous fitting over the entire opening 13 of the bag body 10 is performed in such a manner that the common convex portion 74 is accommodated in the accommodating space between the first concave portion 72 and the first concave portion 72.

  When the opening operation of the packaging bag is started from this state, the fitting between the male fitting member 60 and the female fitting member 70 is released in the reverse order of the above-described sealing operation. That is, the opening of the first recess 72 is expanded so that the first head 62 a moves backward from the internal space of the first recess 72 and the opening of the second recess 73 is expanded. The second head 63a is retracted from the inner space of the bag, and the bag body 10 is thereby opened.

  As described above, the zippered packaging bag according to the sixth embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, the following Such effects can be obtained.

(8) According to the sixth embodiment, since the second convex portion 63 is formed discontinuously in the sealing direction, the function of sensing the fitting state during the sealing operation is a male fitting member. 60. Thereby, it becomes possible to raise the freedom degree as a packaging bag with a zipper.
(Seventh embodiment)
Hereinafter, a seventh embodiment of the present invention will be described with reference to FIGS. 14 and 15.

  In addition, this 7th Embodiment is male fitting by the 2nd convex part which is discontinuous in the sealing direction, and the 1st convex part and the 3rd convex part which were arranged in parallel continuously via the 2nd convex part. A female fitting member is configured by a single concave portion that constitutes a combined member and is also continuous in the sealing direction. In other configurations, the configuration is in accordance with the sixth embodiment.

  FIG. 14 shows a perspective structure of a packaging bag with a zipper according to the seventh embodiment as a diagram corresponding to FIG. That is, in this embodiment, as shown in FIG. 14, the male fitting member 80 constituting the zipper 14 has a belt-like male base 81 welded to one inner surface of the bag sheet 11 as a base material. A second protrusion 83 formed discontinuously in the sealing direction, which is the longitudinal direction of the male base 81, and a second protrusion formed continuously in parallel with the seal direction via the second protrusion 83. The first convex portion 82 and the third convex portion 84 are configured. That is, in the male fitting member 80, the first convex portion 82, the second convex portion 83, and the third convex portion 84 form a parallel structure in the cross-sectional direction.

Among these, the 1st convex part 82 is the 1st head part 82a formed so that the fitting state with the female fitting member 90 can be hold | maintained, and this 1st head part 82a is the inclusion side of the male side base | substrate 81. The first connecting portion 82b is formed integrally with the first connecting portion 82b. The first head portion 82a having a trapezoidal cross section is formed over the entire width of the male base body 81 in the sealing direction, and the first connecting portion 82b having a trapezoidal cross section smaller than the first head portion 82a is also provided. The male base 81 is formed over the entire width in the sealing direction.

  The second convex portion 83 formed in parallel with the first convex portion 82 includes a second head portion 83a formed so as to express a feeling of fitting with the female fitting member 90, and the second head portion. The second connecting portion 83b is formed integrally with the portion 83a connected to the inner side of the male base 81. The second head 83a having a trapezoidal cross section is formed discontinuously over the entire width of the male base 81 in the sealing direction in parallel with the first head 82a, and is smaller than the second head 83a. The second connecting portion 83b having a rectangular shape is formed over the entire width in the sealing direction in parallel with the first connecting portion 82b.

  The third convex portion 84 formed in parallel with the first convex portion 82 via the second convex portion 83 is formed so that the fitting state with the female fitting member 90 can be maintained. The three head portions 84a and the third connecting portion 84b formed integrally with the third head portion 84a connected to the inner side of the male base 81 are configured. The third head portion 84a having a trapezoidal cross section is formed across the entire width of the male base body 81 in the sealing direction in parallel to the first head portion 82a and the second head portion 83a. The third connecting portion 84b having a trapezoidal cross section is formed over the entire width of the male base 81 in the sealing direction in parallel with the first connecting portion 82b and the second connecting portion 83b.

  In the male fitting member 80 having such a structure, the first convex portion 82 is relatively between the male base 81 and the first head portion 82a which are on the second convex portion 83 side and are relatively wide. By sandwiching the first connecting portion 82b having a narrow width, a first fitting groove G4 continuous in the sealing direction is formed on the second convex portion 83 side in the fitting direction of the first connecting portion 82b. In addition, a relatively narrow second connecting portion 83b is sandwiched between the relatively wide male-side base 81 and the second head 83a, so that a pair of second fittings that are continuous in the sealing direction. Grooves G5 are formed on both sides of the second connecting portion 83b in the fitting direction. And the 3rd connection part 84b which is on the 1st convex part 82 side of the 3rd convex part 84, and is relatively narrow between the male side base | substrate 81 which is relatively wide, and the 3rd head part 84a is. By being sandwiched, a third fitting groove G6 continuous in the sealing direction is formed on the second convex portion 83 side in the fitting direction of the third connecting portion 84b. In addition, since the first convex portion 82, the second convex portion 83, and the third convex portion 84 are configured in parallel, between the first convex portion 82 and the second convex portion 83, and the first convex portion. Between 82 and the 2nd convex part 83, the trapezoid-shaped accommodation space which can accommodate the recessed part 92 is continuously formed over the full width of a sealing direction.

  On the other hand, the female base 91 that is the base of the female fitting member 90 that is disposed so as to face the male fitting member 80 and is detachable from the male fitting member 80 has an entire inner periphery of the opening 13. It is welded in the form of a belt over the other half of the other half. On the female-side base 91 on the side of the male fitting member 80 (inner side), there is a concave portion 92 disposed opposite to the second convex portion 83 and continuing in the sealing direction, which is the longitudinal direction of the female-side base 91. It is integrally formed.

  The concave portion 92 is formed in a convex groove shape protruding from the female base 91 toward the inner side, and has a size that can accommodate the second head portion 83a of the male fitting member 80 and has a rectangular cross section. The space is continuously formed over the entire width in the sealing direction.

A pair of first fitting pieces 92a narrowing the opening is provided inside the opening, which is an end on the inner side of the recess 92, so that the fitting state with the second fitting groove G5 can be maintained. And 92b are formed continuously over the entire width of the recess 92 in the sealing direction. The tips of the first fitting pieces 92a and 92b guide the concave portion 92 to the accommodating space between the first convex portion 82 and the second convex portion 83 and between the second convex portion 83 and the third convex portion 84. The cross section is curved and tapered in the shape of the shape. The pair of first fitting pieces 92a and 92b are, for example, fitted so that the mating sensitivity can be obtained in the process of fitting the male fitting member 80 and the female fitting member 90. The fitting piece width Wf4, which is a separation distance in the mating direction, extends so as to be equal to the fitting groove width Wm4, which is the width in the fitting direction of the second connecting portion 83b (Wf4 = Wm4). According to the recess 92 having such a configuration, when the male fitting member 80 and the female fitting member 90 are fitted, the pair of first fitting pieces 92a and 92b and the second fitting grooves G5, Sensitivity at the time of fitting in between can be improved. Further, when the first fitting pieces 92a and 92b that are in the state of being fitted to the second fitting groove G5 are fitted and removed from the second fitting groove G5, it is possible to suppress an excessive resistance.

  On the other hand, on the outer side of the opening, which is the inner side end of the recess 92, the opening is expanded so that the fitting state with the first fitting groove G4 and the third fitting groove G6 can be maintained. A pair of second fitting pieces 92c and 92d are continuously formed over the entire width of the recess 92 in the sealing direction. The tips of the second fitting pieces 92c and 92d are arranged so that the concave portion 92 is placed in the accommodating space between the first convex portion 82 and the second convex portion 83 and between the second convex portion 83 and the third convex portion 84. The cross section is curved and tapered in the shape of the guide. Further, on both outer sides of the concave portion 92 in the short direction, a fourth fitting groove G7 which is a concave groove sandwiched between the second fitting piece 92c and the female side base 91, a second fitting piece 92d and the female side A fifth fitting groove G8, which is a concave groove sandwiched between the base body 91, is formed continuously with the first convex part 82 and the third convex part 84 in the sealing direction. ing. According to such a configuration, it is possible to increase the contact area when the concave portion 92 and the first convex portion 82 and the third convex portion 84 are fitted, and as a result, the concave portion 92, the first convex portion 82, and the third convex portion. The adhesion degree with 84 can be increased.

  Under such a premise, the sealing operation and the opening operation of the zippered packaging bag according to the present embodiment will be described with reference to FIG. First, when the sealing operation of the packaging bag is started, as shown in FIG. 15, the first fitting pieces 92a and 92b and the second fitting pieces 92c and 92d are recessed at one end of the zipper 14 in the sealing direction. 92 is guided to the accommodating space between the first convex portion 82 and the second convex portion 83 and between the second convex portion 83 and the third convex portion 84. At the same time, the second head 83a of the second convex portion 83 enters the internal space of the concave portion 92 so as to widen the opening in the concave portion 92. Thereafter, the first fitting piece 92a and the second fitting piece 92c are fitted into one second fitting groove G5 and the first fitting groove G4, and the other second fitting groove G5 and the third fitting groove are fitted. The first fitting piece 92b and the second fitting piece 92d are fitted to G6, and the first head portion 82a and the third head portion 84a are fitted to the fourth fitting groove G7 and the fifth fitting groove G8. To do. Thus, the male fitting member 80 is formed in such a manner that the concave portion 92 is accommodated in the accommodating space between the first convex portion 82 and the second convex portion 83 and between the first convex portion 82 and the second convex portion 83. The fitting with the female fitting member 90 is performed. At this time, since the second protrusion 83 is formed discontinuously in the sealing direction, the fitting between the pair of second fitting grooves G5 and the first fitting pieces 92a and 92b is discontinuous in the sealing direction. Every time they are fitted, vibration and audible sound are generated. These vibrations and audible sounds are largely reflected when the first fitting pieces 92a and 92b collide with the second fitting groove G5. In the present embodiment, since the fitting piece width Wf4 and the fitting groove width Wm4 are formed to be equal, these fitting piece widths Wf4 are formed smaller than the fitting groove width Wm4. Vibration and audible sound are more prominent. At the same time, the second fitting pieces 92c and 92d that are continuous in the sealing direction are fitted to the first fitting groove G4 and the third fitting groove G6 that are continuous in the sealing direction. Further, the outer edge of the recess 92 which is continuous in the sealing direction and the first head portion 82a and the third head portion 84a are brought into surface contact with each other, so that the entire opening 13 of the bag body 10 is continuously fitted. Is made.

When the opening operation of the packaging bag is started from this state, the fitting between the male fitting member 80 and the female fitting member 90 is released in the reverse order of the above-described sealing operation. That is, when the first fitting pieces 92a and 92b and the second fitting pieces 92c and 92d are displaced by their plasticity, the fitting with each of the fitting grooves G4 to G6 is released, and the concave portion 92 becomes the first convex portion. Retract from the accommodation space between 82 and the 2nd convex part 83 and between the 1st convex part 82 and the 2nd convex part 83, and, thereby, the bag body 10 will be in an unsealed state.

  As described above, the packaging bag with a zipper according to the seventh embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, as described below. An effect comes to be acquired.

  (9) According to the seventh embodiment, the first convex portion 82 and the third convex portion 84 constituting the male fitting member 80 are continuously formed in parallel to the sealing direction, and the first Two convex portions 83 are discontinuously formed in the same sealing direction in parallel with the first convex portion 82 and the third convex portion 84 in the sealing direction. Thereby, the female fitting member 90 can be configured only by the concave portions 92 formed continuously in the sealing direction, and as a result, the degree of freedom as a packaging bag with a zipper can be increased.

(10) According to the seventh embodiment, the cross-sectional shape of the concave portion 92 is formed to match the cross-sectional shapes of the first convex portion 22 and the second convex portion 23. Thereby, when the zipper 14 is sealed, the first convex portion 22 and the second convex portion 23 can be fitted by surface contact with the outer edge of the concave portion 92, and airtightness as a packaging bag can be improved. become.
(Eighth embodiment)
Hereinafter, an eighth embodiment of the present invention will be described with reference to FIG. In addition, this 8th Embodiment is male by a pair of male side convex part which continues in a sealing direction, and the other male side convex part which is provided between this pair of male side convex part and continues in a sealing direction. The female mold fitting member 120 is constituted by a pair of female convex portions that constitute the mold fitting member 110 and is discontinuous in the sealing direction, and a concave portion that is surrounded by the pair of female convex portions and the female base. The other configurations are the same as those in the first embodiment. FIG. 16 shows a perspective structure of a packaging bag with a zipper according to the eighth embodiment as a diagram corresponding to FIG.

  As shown in FIG. 16, the male fitting member 110 constituting the zipper 14 has a belt-like male base 111 welded to one inner surface of the bag sheet 11 as a base, and the length of the male base 111 is long. A pair of first male side convex portions 112 formed in a continuously parallel shape across the entire width in the sealing direction, and the entire width in the same sealing direction between the pair of first male side convex portions 112. It is comprised by the 2nd male side convex part 113 formed continuously. Among these, the pair of first male-side convex portions 112 are formed in a hook-like shape so that their head portions 112a face each other when viewed from the sealing direction in order to develop a feeling of fitting with the female fitting member 120. In addition, the second male convex portion 113 has a head 113a as a pair of first male convex portions 112 when viewed from the sealing direction so that the fitting state with the female fitting member 120 can be maintained. The cross section of the shape extending toward the head portion 112a is formed in a T shape. In addition, the hook shape mentioned above is the shape where the front-end | tip of the cross section seen from the sealing direction bent at right angle with respect to the thickness direction, or the shape bent upward or downward.

On the other hand, the female fitting member 120 that is disposed so as to face the male fitting member 110 and is detachable from the male fitting member 110 is a belt-like female-side substrate welded to the other inner surface of the bag sheet 11. A pair of female projections 122 formed in parallel with each other over the entire width of the sealing direction, which is the longitudinal direction of the female side base 121, and the pair of female side convex portions 122 and the female side base 121. It is comprised by the female side recessed part 123 enclosed by. The pair of female convex portions 122 are formed in a hook shape in a shape in which their heads 122a face each other when viewed from the sealing direction, and the pair of first male convex portions in the male fitting member 110 Only the head 122a is discontinuously formed on the structure in the sealing direction in order to express the fit with 112. The female recess 123 has an inverted T-shaped cross section viewed from the sealing direction, and can hold the fitting state of the male fitting member 110 with the head 113a of the second male projection 113. Therefore, the bottom portion 123a is formed continuously over the entire width in the sealing direction so as to be aligned with the head portion 113a of the second male side convex portion 113.

  The sealing operation and opening operation of the zippered packaging bag configured as described above will be described. First, when the sealing operation of the packaging bag is started, the head 113a of the second male side convex portion 113 expands the opening of the female side concave portion 123 at one end of the zipper 14 in the sealing direction. It enters the bottom 123a of the side recess 123. At the same time, the pair of first male side convex portions 112 and the pair of female side convex portions 122 are fitted together such that the first male side convex portion 112 and the female side convex portion 122 mesh with each other's head. Then, the fitting between the second male side convex portion 113 and the female side concave portion 123 and the fitting between the first male side convex portion 112 and the female side convex portion 122 are advanced from one end to the other end in the sealing direction. .

  At this time, since the pair of female convex portions 122 are formed discontinuously in the sealing direction, the fitting between the pair of first male convex portions 112 and the pair of female convex portions 122 is discontinuous in the sealing direction. Each time they are fitted, vibration and audible sound are generated. Such vibrations and audible sounds are largely reflected when the head portion 112a of the first male convex portion 112 and the head portion 122a of the female convex portion 122 collide with each other. In this regard, in the present embodiment, the head 113a of the second male convex portion 113 pushes the opening of the female concave portion 123 during the fitting, that is, the female convex portion 122 corresponds to the first male convex portion. Since the first male side convex portion 112 and the female side convex portion 122 are fitted to each other, the vibration and audible sound are enhanced. In the zipper 14 fitted through such a sealing operation, the second male side convex portion 113 and the female side concave portion 123 are both structurally continuous in the sealing direction, and the second male side Since the head portion 113a of the side convex portion 113 and the bottom portion 123a of the female side concave portion 123 are aligned, the second male side convex portion 113 and the female side concave portion 123 are in close contact with each other in the longitudinal direction. As a result, the airtightness of the zipper 14 is sufficiently secured.

  When the opening operation is started from this state, the opening 13 of the bag body 10 is widened in such a manner that the male fitting member 110 and the female fitting member 120 are separated from each other. At this time, the head 113a of the second male-side convex portion 113 opens the opening of the female-side concave portion 123 so that the fitting between the second male-side convex portion 113 and the female-side concave portion 123 is released. The engagement between the first male side convex portion 112 and the female side convex portion 122 is released in a manner in which the space between the pair of first male side convex portions 112 is expanded, whereby the bag body 10 is opened.

  As explained above, the packaging bag with zipper according to the eighth embodiment can obtain the effects according to the effects (1) to (3) according to the first embodiment, and further, An effect comes to be acquired.

(11) According to the eighth embodiment, the female-side concave portion 123 for ensuring airtightness is configured by the pair of female-side convex portions 122 and the female-side base body 121 for sensing the fitting state. Therefore, space saving of such a zipper is achieved as compared with a configuration in which a fitting portion for ensuring airtightness is separately provided.
(Ninth embodiment)
The ninth embodiment of the present invention will be described below with reference to FIG. The ninth embodiment includes a pair of male convex portions that are discontinuous in structure in the sealing direction and another male convex portion that is provided between the pair of male convex portions and continues in the sealing direction. The male fitting member 130 is constituted by the portion, and the female die is constituted by a pair of female convex portions discontinuous in the sealing direction and a concave portion surrounded by the pair of female convex portions and the female base. The fitting member 140 is configured, and other configurations are configured in accordance with the previous ninth embodiment. FIG. 17 shows a perspective structure of a packaging bag with a zipper according to the tenth embodiment as a diagram corresponding to FIG.

  As shown in FIG. 17, the male fitting member 130 constituting the zipper 14 has a strip-shaped male base body 131 welded to one inner surface of the bag sheet 11 as a base material, and the length of the male base body 131 is long. A pair of first male convex portions 132 formed discontinuously on the structure in parallel with each other over the entire width of the sealing direction, and the sealing direction between the pair of first male convex portions 132 The second male side convex portion 133 is formed continuously over the entire width of the second male side convex portion 133. Among these, the pair of first male-side convex portions 132 is formed in a hook shape in cross section in which the head portions 132a face each other when viewed from the sealing direction so as to express a feeling of fitting with the female fitting member 140. The second male convex portion 133 has a pair of heads 133a as seen from the sealing direction, as in the ninth embodiment, so that the fitting state with the female fitting member 140 can be maintained. A cross section of the first male convex part 132 extending toward the head part 132a is formed in a T shape.

  On the other hand, the female fitting member 140 that is disposed so as to face the male fitting member 130 and is detachable from the male fitting member 130 is a belt-shaped female-side base member welded to the other inner surface of the bag sheet 11. 141 as a base material, a pair of female-side convex portions 142 formed continuously in parallel with each other over the entire width in the sealing direction, which is the longitudinal direction of the female-side base 141, and the pair of female-side convex portions 142 and the female side A female-side concave portion 143 is formed by being surrounded by the base 141 and continuously formed over the entire width of the female-side base 141 in the sealing direction. The pair of female-side convex portions 142 are formed so that their heads 142a face each other when viewed from the sealing direction so as to develop a feeling of fitting with the pair of first male-side convex portions 132 in the male fitting member 130. The cross section is formed in a hook shape. The female recess 143 has an inverted T-shaped cross section viewed from the sealing direction, and can hold the fitting state of the male fitting member 130 with the head 132a of the second male projection 133. Therefore, the bottom portion 143a is formed continuously over the entire width in the sealing direction so as to be aligned with the head portion 133a of the second male side convex portion 133.

  The sealing operation and opening operation of the zippered packaging bag configured as described above will be described. First, when the sealing operation of the packaging bag is started, the head 133a of the second male-side convex portion 133 opens the opening of the female-side concave portion 143 at one end in the sealing direction of the zipper 14 as in the ninth embodiment. As it expands, it enters the bottom 143a of the female recess 143. At the same time, the pair of first male side convex portions 132 and the pair of female side convex portions 142 are fitted in such a manner that the first male side convex portions 132 and the female side convex portions 142 mesh with each other's heads. Then, the fitting between the second male convex portion 133 and the female concave portion 143 and the fitting between the first male convex portion 132 and the female convex portion 142 are advanced from one end to the other end in the sealing direction. .

  At this time, since the pair of first male convex portions 132 are formed discontinuously in the sealing direction, the fitting between the pair of first male convex portions 132 and the pair of female convex portions 142 is performed in the sealing direction. Each time they are fitted, vibration and audible sound are generated. Such vibrations and audible sounds are largely reflected when the head 132a of the first male convex part 132 and the head 142a of the female convex part 142 collide. In this respect, in the present embodiment, as in the ninth embodiment, the head 133a of the second male-side convex portion 133 forms a shape that pushes the opening of the female-side concave portion 143 at the time of the fitting. And audible sound will be enhanced. Also in the zipper 14 fitted through such a sealing operation, the second male side convex portion 113 and the female side concave portion 123 are in close contact with each other in the longitudinal direction as in the ninth embodiment. As a result, the airtightness of the zipper 14 is sufficiently ensured.

As explained above, the effect according to the effect by 9th Embodiment is acquired also by the packaging bag with a zipper concerning 9th Embodiment.
(Other embodiments)
The above-described embodiments can be implemented with the following modifications.

  In the above embodiment, the cross section over the entire width in the sealing direction of the female fitting member forms a square-shaped internal space continuously or intermittently, and the cross section over the entire width in the sealing direction of the male fitting member is trapezoidal. The convex part of was formed continuously or intermittently. Not only this but in order to further raise the adhesion degree at the time of fitting of a male fitting member and a female fitting member, the cross-sectional shape of the convex part in a male fitting member and the internal space of a female fitting member The cross-sectional shape may be matched.

  For example, as shown in FIG. 18, the internal space R having a trapezoidal cross section that is detachable from the first convex portion 22 and the second convex portion 23 having a trapezoidal cross section is formed in the first fitting member 30. You may form in the recessed part 32 and the 2nd recessed part 33. FIG. According to such a configuration, as shown in FIG. 19, when the zipper 14 is sealed, the contact area between the male fitting member 20 and the female fitting member 30 is increased, and the airtightness as a packaging bag is improved. be able to. Further, the present invention is not limited to this, and such a configuration may also be applied when the first convex portion 22 and the second convex portion 23 and the first concave portion 32 and the second concave portion 33 form a parallel structure.

  In the above embodiment, the cross section of the first head 22a or the second head 23a constituting the male fitting member is formed in a trapezoidal shape. Not only this but the 1st head 22a or the 2nd head 23a should just be the shape which can be fitted or detached with the female type | mold fitting member 30, for example, as shown in FIG. It may have a cross-sectional shape.

  Moreover, in the said embodiment, the cross section was formed in the front-end | tip of the 1st fitting piece 32a or the 2nd fitting piece 33a which comprises a female type fitting member. Not only this but the tip of the 1st fitting piece 32a or the 2nd fitting piece 33a should just be a shape which can be inserted or removed from male fitting member 20, for example, as shown in Drawing 20, male type The shape may be such that the first head 22a or 23a of the fitting member 20 is curved and tapered so as to guide the first head 22a or 23a to the internal space R.

  According to these configurations, as shown in FIG. 21, when the male fitting member 20 and the female fitting member 30 are fitted, resistance can be reduced, and the sealing operation of the zipper 14 can be performed. It can be made smoother. Even in such a case, as shown in FIGS. 22 and 23, a cross-sectional shape matching the cross-sectional shape of the first head portion 22a or the second head portion 23a is formed in the internal space R of the female fitting member 30. As a result, airtightness as a packaging bag can be improved. Further, the present invention is not limited to this, and such a configuration may also be applied when the first convex portion 22 and the second convex portion 23 and the first concave portion 32 and the second concave portion 33 form a parallel structure.

  -In the said embodiment, in order to improve the sensitivity of the fitting state in the case of sealing operation, the fitting piece width | variety and the fitting groove width | variety for expressing the same function were made equal. For example, in the first embodiment, the first fitting groove width Wm1 and the second fitting groove width Wm2 are configured to be equal to the second fitting piece width Wf2. In the second embodiment, The second fitting groove width Wm2 and the first fitting piece width Wf1 were configured to be equal. Further, for example, in the third embodiment, the fitting groove width Wm3 and the second fitting piece width Wf2 are configured to be equal, and in the fourth embodiment, the second fitting groove width Wm2 and the fitting piece width are set. Wf3 was set to be equal. Further, in the fifth and sixth embodiments, the second fitting groove width Wm2 and the second fitting piece width Wf2 are configured to be equal. In the seventh embodiment, the fitting groove width Wm4 and the fitting groove width Wm4 are fitted. The half width Wf4 is set to be equal. However, the present invention is not limited to this, and the widths of the fitting pieces and the fitting grooves may be different when the fitting state is sensed by discontinuous fitting in the sealing direction.

-In each said embodiment, in order to improve the airtightness in a sealing state, the fitting piece width for expressing the same function was made smaller than the fitting groove width. For example, in the first embodiment, the first fitting piece width Wf1 is configured to be smaller than the second fitting groove width Wm2. In the third embodiment, the first fitting piece width Wf1 is set to the fitting groove. In the fourth embodiment, the fitting piece width Wf3 is configured to be smaller than the first fitting groove width Wm1. In the fifth embodiment, the first fitting piece width Wf1 is configured to be smaller than the first fitting groove width Wm1. In addition to this, by making the fitting piece width for expressing the fitting state sensing function smaller than the fitting groove width, airtightness between the male fitting member and the female fitting member The structure which improves further may be sufficient. Alternatively, when the hermeticity at the time of zipper sealing can be ensured by the entry of the head into the internal space of the female fitting member, the fitting piece width for expressing the close contact function is equal to the fitting groove width. It may be a simple configuration. Further, not only the components in the width direction in the fitting portion as described above, but also a configuration in which the hermeticity in the sealed state is expressed may be a component in the thickness direction in the fitting portion. For example, in the first embodiment and the fourth embodiment, the thickness of the second head 23a and the thickness of the head 42a are configured to be larger than the thickness (depth) of the first recess 32, and the first The airtightness may be ensured by a component in the thickness direction between the two heads 23a or the head 42a and the first recess 32.

  In the first embodiment or the second embodiment, either one of the second convex portion 23 and the second concave portion 33 is formed discontinuously on the structure along the sealing direction. You may form both the 2nd convex part 23 and the 2nd recessed part 33 discontinuously on a structure along a sealing direction. Moreover, in the said 5th Embodiment or 6th Embodiment, although either one of the 2nd convex part 63 and the 2nd recessed part 73 was formed on the structure discontinuously along the sealing direction, it is not restricted to this. Both the second convex portion 63 and the second concave portion 73 may be discontinuously formed on the structure along the sealing direction.

  In the fifth embodiment or the sixth embodiment, the female fitting member 70 is configured in such a manner that the first concave portion 72 and the second concave portion 73 are coupled and parallel to each other. Not limited to this, the first recess 72 and the second recess 73 may be arranged in parallel.

  In the fifth embodiment or the sixth embodiment, the male fitting member 60 is configured in such a manner that the first convex portion 62 and the second convex portion 63 are arranged side by side. The female fitting member 70 was configured in such a manner that the two concave portions 73 were juxtaposed. Further, in the seventh embodiment, the male fitting member 80 is configured in such a manner that the first convex portion 82, the second convex portion 83, and the third convex portion 84 are juxtaposed, and only the concave portion 92 is a female type. A fitting member 90 was configured. Not limited to this, a multi-row structure is formed by arranging a plurality of first fitting portions continuously formed in the sealing direction and second fitting portions formed discontinuously in the sealing direction. You may make it comprise a fitting member.

  The male fitting member and the female fitting member in the above embodiment each have a laminated structure in which two fitting portions are laminated, or an array structure in which two fitting portions are arranged in parallel. Alternatively, the number of fitting portions used for the array structure may be three or more. With such a configuration, the sensing of the fitting state during the sealing operation is more effectively realized, and the airtightness in the bag body is more easily secured.

  In the above embodiment, the male fitting base and the female fitting base welded to the bag are embodied as the base of the fitting portion. However, the opening 13 itself of the bag 10 is changed by changing this. It may be embodied as a substrate. That is, the structure by which the component of the fitting part was formed integrally with the bag body may be sufficient.

DESCRIPTION OF SYMBOLS 10 ... Bag body, 11 ... Bag body sheet, 12 ... Welding part, 13 ... Opening part, 14 ... Zipper, 20, 40, 60, 80, 110, 130 ... Male fitting member, 21, 41, 61, 81 111, 131 ... male side base, 22 ... first convex part, 23 ... second convex part, 30, 50, 70, 90, 120,
140 ... Female fitting member, 31, 51, 71, 91, 121, 141 ... Female base, 32 ... First recess, 33 ... Second recess, 42 ... First projection, 52, 92 ... Recess, 22 , 62, 82 ... first convex portion, 23, 63, 83 ... second convex portion, 32, 72 ... first concave portion, 33, 73 ... second concave portion, 74 ... common convex portion, 84 ... third convex portion.

Claims (7)

A zippered packaging bag provided with a zipper that forms a band on the inner surface of the opening of the bag body,
The zipper
A pair of opposing fitting members formed to extend in the longitudinal direction of the zipper and detachable from each other;
One of the fitting members is
A first fitting portion formed continuously in the longitudinal direction and detachable from the other fitting member;
A second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member;
In a state where the pair of fitting members are fitted, the first fitting portion and the other fitting member are in close contact with each other in the longitudinal direction ,
The one fitting member is
A packaging bag with a zipper, characterized in that the first fitting portion and the second fitting portion are stacked in the thickness direction .   The first fitting portion is
  A first recess provided in the first base and extending in the longitudinal direction;
  The second fitting portion is
  A second recess laminated in the thickness direction of the first recess and extending in the longitudinal direction;
  The other fitting member is
  A first convex portion provided in a second base and extending in the longitudinal direction so as to be detachable from the second concave portion;
  A second convex portion that is stacked in the thickness direction of the first convex portion and extends in the longitudinal direction so as to be detachable from the first concave portion and the second concave portion;
  In a state where the pair of fitting members are fitted, the first concave portion and the second convex portion are in close contact with each other in the longitudinal direction.
  The packaging bag with a zipper of Claim 1. The second convex portion is configured in such a manner that the width of the second convex portion viewed from the longitudinal direction becomes smaller on the base side, and the width of the opening of the first concave portion viewed from the longitudinal direction is the longitudinal direction. The packaging bag with a zipper according to claim 2 , wherein the packaging bag is smaller than a width of the second convex portion as viewed from above. The first fitting portion is
A first recess provided in the first base and extending in the longitudinal direction;
The second fitting portion is
A second recess laminated in the thickness direction of the first recess and extending in the longitudinal direction;
The other fitting member is
A convex portion provided in the second base body and extending in the longitudinal direction so as to be able to fit into the first concave portion and the second concave portion;
Zipper packaging bag according to claim 1, said first recess and said protrusion are in close contact over the entirety of the longitudinal direction in a state where the pair of fitting members are fitted. The convex portion is configured in such a manner that the width of the convex portion viewed from the longitudinal direction becomes smaller on the base side, and the width of the opening of the first concave portion viewed from the longitudinal direction is the above viewed from the longitudinal direction. The packaging bag with a zipper of Claim 4 smaller than the width | variety of a convex part.   A zippered packaging bag provided with a zipper that forms a band on the inner surface of the opening of the bag body,
  The zipper
  A pair of opposing fitting members formed to extend in the longitudinal direction of the zipper and detachable from each other;
  One of the fitting members is
  A first fitting portion formed continuously in the longitudinal direction and detachable from the other fitting member;
  A second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member;
  In a state where the pair of fitting members are fitted, the first fitting portion and the other fitting member are in close contact with each other in the longitudinal direction,
  The one fitting member is
  The first fitting portion and the second fitting portion are arranged side by side in the width direction,
  The first fitting portion is
  A first recess provided in the first base and extending in the longitudinal direction;
  The second fitting portion is
  A second recess extending in the longitudinal direction in parallel with the first recess,
  The other fitting member is
  A first convex portion provided in a second base and extending in the longitudinal direction so as to be able to be fitted and removed from the first concave portion;
  A second convex portion that is arranged in parallel with the first convex portion and extends in the longitudinal direction so as to be detachable from the second concave portion;
  In a state where the pair of fitting members are fitted, the first concave portion and the first convex portion are in close contact with each other in the longitudinal direction,
  The first convex portion is configured in such a manner that the width of the first convex portion viewed from the longitudinal direction becomes smaller on the base side, and the width of the first convex portion viewed from the longitudinal direction is from the longitudinal direction. A packaging bag with a zipper, which is larger than the width of the opening of the first recess as viewed. A zippered packaging bag provided with a zipper that forms a band on the inner surface of the opening of the bag body,
The zipper
A pair of opposing fitting portions formed so as to extend in the longitudinal direction of the zipper and detachable from each other
Have materials,
One of the fitting members is
A first fitting portion formed continuously in the longitudinal direction and detachable from the other fitting member;
A second fitting portion formed discontinuously in the longitudinal direction and detachable from the other fitting member;
In a state where the pair of fitting members are fitted, the first fitting portion and the other fitting member are in close contact with each other in the longitudinal direction,
The one fitting member is
The first fitting portion and the second fitting portion are arranged side by side in the width direction,
The second fitting portion is
A pair of first protrusions extending in the longitudinal direction and arranged in parallel in the width direction of the first base body with a hook-like cross section when viewed from the longitudinal direction;
The first fitting portion is
A recess that is surrounded by the first base and the pair of first protrusions and extends in the longitudinal direction;
The other fitting member is
A pair of second protrusions having a hook-like cross-section extending in the longitudinal direction so as to be detachable from the pair of first protrusions;
A third protrusion provided between the pair of second protrusions in the second base body and extending in the longitudinal direction so as to be detachable from the recess;
The packaging bag with a zipper characterized by the said recessed part and the said 3rd convex part closely_contact | adhering over the said whole longitudinal direction in the state which a pair of said fitting member fits.

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