JP2018008728A - Synthetic resin type packaging bag with switching tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin type packaging bag with a switching tool which improves switching touch feeling and switching sound feeling, maintains closing fitness, improves closing air tightness, improves closing tenacity, improves switching operability and strength, simplifies a composition, mitigates difficulty of bag manufacturing and satisfies cost reduction of a product.SOLUTION: In relation to a switching confirmation type switching tool 31, a ruggedness touch feeling part 35 for confirming a closed state when closing a switching tool is provided on a protruded part 34 for latching of a male switching member 32. The rugged touch feeling part 35 is provided with a non-recessed part 36 having no recessed part and a recessed part 37 having recess which are alternately lined along the length direction of the male switching member 32, and is located on a vertically intermediate region of the protruded part 34 for latching. A recessed part for generating an information sound for informing of an opening state when opening the switching tool and informing of a closing state when closing the switching tool is provided on the ruggedness touch feeling part 35 of the male switching member 32 and the recessed part 37 of the rugged touch feeling part 35 serves as the recessed part for generating an information sound.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a synthetic resin-based packaging bag having an opening / closing tool inside the bag, and more specifically, a synthetic resin system with an opening / closing tool capable of obtaining a specific closing feel and opening / closing sound feeling when the opening / closing tool is closed or opened. The present invention relates to a packaging bag with a reasonably improved opening / closing tool.

  As a known synthetic resin packaging bag, there is one provided with an opening and closing tool called a chuck, a fastener, a zipper, and an occlusion tool in the opening. In the case of this synthetic resin packaging bag with an opening / closing tool, it is possible to prevent leakage of the packaged item from outside the bag, entry of foreign matter into the bag, alteration of the packaged item, etc. by simply closing the bag opening with the opening / closing tool. It can be used widely in various fields.

  As for this synthetic resin packaging bag with an opening / closing tool, a user has already been provided that gives a clear opening / closing feel to the user when the opening / closing tool is opened / closed or generates a clear opening / closing sound. Incidentally, the synthetic resin packaging bags with opening / closing tools disclosed in the following Patent Documents 1 to 4 belong to that type of bag.

  Regarding the synthetic resin packaging bags with opening / closing tools disclosed in Patent Documents 1 to 4, when the opening / closing tool is operated to close the bag mouth, intermittent knocking sensation or intermittent clicking sensation is present. Since it is transmitted from the opening / closing tool side to the fingertip of the operator (user), the user can clearly recognize the closed state of the opening / closing tool. At this time, since the closing sound is emitted from the opening / closing tool, the closed state of the opening / closing tool can be recognized more clearly by the synergistic effect of the closing sound and the tactile sensation. When the opening / closing tool is operated to open the bag mouth, a clear opening sound is emitted from the opening / closing tool. For the user, this is accompanied by the opening operation, so that a realistic open sound feeling can be obtained, so that the opening state of the opening / closing tool becomes more obvious.

  With regard to the synthetic resin packaging bag with an opening / closing tool that performs the special functions for obtaining the opening / closing touch feeling and opening / closing sound feeling, the user can clearly recognize the closed state and the opened state of the opening / closing tool. . Therefore, in the case of this type of packaging bag, it can be said that it is highly useful and useful in that it exhibits such a special function.

  However, in the case of the synthetic resin packaging bags disclosed in Patent Documents 1 to 4, there remains a problem to be solved for the opening / closing tool having the special function described above. The following points out the issues.

[About Patent Document 1]
<01> With regard to the plastic fastener (opening / closing tool) of the bag disclosed in this document, this includes a pair of freely engageable rib members (male opening / closing members) and a concave groove member (female opening / closing member) in the bag. It is provided on the mouth side, and a large number of deformed portions are formed at intervals in the length direction at the edge of the rib member and / or the edge of the groove member. is there. Such opening / closing tactile sensation and opening / closing sound sensation at the time of opening and closing the fastener are obtained by a large number of deformed portions (concave) and non-deformed portions (convex) between the deformed portions. When this is explained on the basis of the user, the user recognizes the difference between the deformed part (concave) and the non-deformed part (convex) by the perception of the fingertip, and obtains the aforementioned knock sensation / click sensation, In addition, the sound of opening and closing is obtained by listening to the sound generated by opening and closing the fastener.
<02> However, in the case of the one disclosed in Patent Document 1, a deformed portion is formed at a location deviated from the central portion of the member, such as an edge portion of the rib member or an edge portion of the groove member. The uneven tactile sensation obtained when the user's fingertip is applied to the fastener portion from the outside of the bag is not sufficient. This is because the area of good sensitivity for human unevenness perception is near the center of the inner surface of the fingertip, whereas the deformed portion at the center of the rib member or the center of the groove member is This is because it does not sufficiently hit the center. Therefore, the user at the time of closing the fastener cannot strongly sense the difference between the deformed portion (concave) and the non-deformed portion (convex) at the center of the inner surface of the fingertip with high unevenness perception sensitivity. In other words, there is a tendency that the knocking sensation and the clicking sensation based on the perception of unevenness of the fingertip tend to be weak. In addition, the fastener opening / closing noise tends to be low.
<03> In Patent Document 1, the following measures may be taken to increase the knocking feeling (click feeling) at the time of opening and closing the fastener or to increase the opening / closing sound feeling. One of them is to increase the degree of deformation of the deformed part, and the other one is more of the upper and lower edges of the rib member and the upper and lower edges of the groove member. Forming a deformed portion at the site. In such a case, the difference between the deformed portion and the non-deformed portion is more obvious, and since there are more such uneven portions, the knocking feeling (click feeling) and the opening / closing sound feeling are certainly improved. However, when these measures are taken, the airtightness and closure retention of the fastener will be reduced. This is because the rib member and the groove member are greatly shaved off in order to form the deformed portion with good sensitivity. Furthermore, if the two members of the rib member and the recessed groove member, or the upper and lower end edges (total of four locations) of the two members are processed, the manufacturing difficulty of the fastener becomes considerably high.
[Regarding Patent Document 2]
<04> The fastener disclosed in Patent Document 2 also has a special shape at the edge of the edge of the rib profile (male opening and closing member) and the groove profile (female opening and closing member), as in Patent Document 1. Is applied to obtain a closing feel and a closing sound.
<05> In the case of the deformed rib material found in Patent Document 2, the cross-sectional shape of the head is a special shape such as a cross, so that the shape structure of the part is complicated and the processing difficulty is high. turn into. In the case where the upper and lower hooks (upper and lower edge portions) found in the groove profile described in this document have a plurality of concave portions arranged in the length direction, this also forms a large number of concave portions on the two hooks. Therefore, the processing difficulty will be high. Furthermore, in the rib deformed material and groove deformed material, in the case where a large number of recesses are formed on both hooks, the recess has a space-like shape in which the material is lost, and the hook shape becomes serrated. End up. The rib deformed or groove deformed material having a large number of material-recessed recesses also reduces the airtightness and closing retention force of the fastener due to the material-recessed recesses. It is necessary to devise in order to obtain a closing sound.
[Regarding Patent Document 3]
<06> The closing device (fastener) for the openable / closable pouch disclosed in Patent Document 3 is also a special shape like the cross shape of the head cross-sectional shape of the closing member (male opening / closing member) as in Patent Document 2. Therefore, the shape structure becomes complicated and the processing difficulty becomes high. In another embodiment, the head of the male closing element (male opening / closing member) and the head of the female closing element (female opening / closing member) are arranged in the longitudinal direction with a separation interval in another embodiment. It is made up of many discontinuous parts. Also in this case, a portion having a separation interval becomes a material-deletion portion, so that the airtightness and closing retention force of the fastener are reduced as described above.
[About Patent Document 4]
<07> The zipper (fastener) of the packaging bag disclosed in Patent Document 4 is also, for example, in the case of a male fitting part (male opening and closing member), a large number of fittings arranged in a row with a non-fitting space interposed This is what is formed of a piece. That is, since the male fitting portion described in this document has an intermittent configuration in which each fitting piece is arranged in a line with a non-fitting space interposed therebetween, it is disclosed in Patent Document 2 and Patent Document 3. It has the same problem as the fastener.

JP 05-137606 A Japanese Patent Laid-Open No. 08-058811 Special table 2007-501175 JP 2010-120190 A

  The present invention has been made to solve the above-described problems with respect to a synthetic resin-based packaging bag provided with an opening / closing tool of a type that can provide an opening / closing tactile sensation and an opening / closing sound feeling. Therefore, part of the object of the present invention is to improve the opening / closing tactile sensation of the opening / closing tool, to improve the opening / closing sound feeling, to maintain the closing compatibility, to improve the closing airtightness, to improve the closing holding power, to improve the opening / closing operability, It is to improve and simplify the structure. Another object of the present invention is to satisfy the relaxation of the bag manufacturing difficulty and the cost reduction of the product.

The synthetic resin-based packaging bag with an opening / closing tool according to the present invention is characterized by the technical contents described in the following items 1 to 6 as means for solving the problems to achieve the intended purpose. .
<Section 1>
Comprising a packaging bag and a horizontally long opening / closing tool for opening and closing the bag mouth of the bag, and
The opening / closing tool is made of a synthetic resin and includes a horizontally long male opening and closing member and a synthetic resin and a horizontally long female opening and closing member. The pair of male and female opening and closing members correspond to each other so that they can be engaged with each other freely. Being and
With respect to the opening / closing tool, the male opening / closing member and the female opening / closing member maintain a facing relationship in which they can freely engage with each other, a bag mouth side portion in the bag body, and a horizontally long posture over both side portions in the bag body. It is provided on the inner surface of the bag front film and the inner surface of the bag back film, and
With respect to the bag body in which the opening / closing tool is provided inside the bag mouth side, the front end of the male opening / closing member enters the female opening / closing member and the male / male opening / closing member engages to close the bag mouth. And the opening of the male opening / closing member is released from the inside of the female opening / closing member and the opening of the bag opening is released when the male / male opening / closing member is disengaged. In plastic packaging bags with opening and closing tools,
As the opening / closing tool, comprising an opening / closing confirmation type opening / closing tool capable of confirming a closed state and an opened state; and
Of the two films for the front and back of the bag, when one of the films is one film and the other film is the other film, the opening / closing confirmation mold provided on the inner surface of the one film The male opening / closing member of the opening / closing tool has a male base projecting from the inner surface of the one film toward the inner surface of the other film, and a latching protrusion integrally formed on the front end side of the male base. And a female opening / closing member of the opening / closing confirmation type opening / closing tool provided on the inner surface of the other film has a pair of upper and lower latching flaps protruding from the inner surface of the other film toward the inner surface of the one film, Having a space for latching interposed between the upper and lower flaps, and
For the latching convex portion and the latching space portion, the latching convex portion enters or leaves the latching space portion, and About the latching convex part and the pair of upper and lower latching flaps, the latching convex part is in a latched state when the latching convex part is in the latching space part, and
As for the opening / closing confirmation type opening / closing tool, an uneven tactile sensation part for confirming a closed state when the opening / closing tool is closed is provided on the protrusion for latching of the male opening / closing member, and the uneven tactile feeling part Has a non-recessed non-recessed portion and a recessed portion with a recess that are alternately arranged along the length direction of the male opening and closing member, and is in the upper and lower intermediate region of the latching protrusion, and
The uneven tactile sensation part of the male opening / closing member has a recess for generating a notification sound for notifying the opening state when opening the opening / closing tool or notifying the closing state when closing the opening / closing tool. A synthetic resin packaging bag with an opening / closing tool, wherein the concave portion for generation also serves as the concave portion for the tactile sensation portion.
<Section 2>
In the synthetic resin packaging bag with an opening / closing tool described in item 1,
An opening / closing tool made of a synthetic resin and having a horizontally long male opening and closing member and a synthetic resin and a horizontally long female opening and closing member, which are a pair of male and female that can be engaged with each other. A synthetic resin-based packaging bag with an opening / closing tool, wherein the opening / closing confirmation-type opening / closing tool and the opening / closing tool adjacent to and parallel to the opening / closing confirmation type opening / closing tool are provided in a plurality of stages.
<Section 3>
In the synthetic resin-based packaging bag with opening and closing device described in item 2,
Two upper and lower opening / closing tools parallel to each other are provided on the bag mouth side in the bag body, the opening / closing tool on the upper side is of the opening / closing confirmation type, and the lower side of the opening / closing tool is on the lower side. A synthetic resin packaging bag with an opening / closing tool, wherein the opening / closing tool is not of the opening / closing confirmation type.
<Section 4>
In the synthetic resin packaging bag with an opening / closing tool according to any one of Items 1 to 3,
The protrusion for latching in the male opening and closing member of the open / close confirmation type opening / closing member has a vertically asymmetrical side-pointed shape composed of a relatively small upper half portion and a relatively large lower half portion. ,and,
A synthetic resin-based packaging bag with an opening / closing tool, wherein the uneven tactile sensation part and the notification sound generating recess part are formed on the relatively large lower half part side of the latching convex part.
<Section 5>
In the synthetic resin packaging bag with an opening / closing tool according to any one of Items 1 to 4,
About the latching convex part which the male opening and closing member of the opening / closing confirmation type opening / closing tool has, the concave / convex tactile part and the alarm sound generating concave part in the latching convex part are formed by pressure molding. A synthetic resin packaging bag with an opening and closing tool.
<Section 6>
In the synthetic resin packaging bag with an opening / closing tool according to any one of Items 1 to 5,
In the formula T = [C × N] / [Q] × [100], Q is the volume of the latching convex portion, C is the volume per concave portion for generating the notification sound, and N is the latching portion. T% is in the range of 15 to 45%, where T is the number of the notification sound generating recesses in the projections, and T is the ratio of all the notification sound generation recesses to the latching projections. Synthetic resin packaging bag with opening and closing features.

  In the case of the synthetic resin-based packaging bag with an opening / closing tool according to the present invention, the opening / closing tool for opening / closing the bag mouth comprising a pair of male opening / closing member and female opening / closing member is provided on the bag mouth side in the bag body. . The latching convex part of the male opening / closing member in this opening / closing tool is for confirming the closed state when the opening / closing tool is closed, and is provided with non-recessed and recessed parts arranged alternately in the horizontal direction. An uneven tactile sensation part having a recess is provided over the length direction of the male opening and closing member. In addition, the uneven tactile sensation part of the male opening / closing member also has a recess for generating a notification sound for notifying the opening state when opening the opening / closing tool or notifying the closing state when closing the opening / closing tool. The concave portion for sound generation also serves as the concave portion of the uneven tactile sensation portion.

  Since the opening / closing tool provided on the bag body according to the present invention has such a configuration, when the opening / closing tool is operated to close the bag mouth, intermittent knocking sensation or intermittent clicking sensation is provided. It will be transmitted from the side to the fingertip of the operator (user). Thus, the user can clearly recognize the closed state of the opening / closing tool. At this time, since the closing sound is emitted from the opening / closing tool, the closed state of the opening / closing tool can be recognized more clearly by the synergistic effect of the closing sound and the tactile sensation. Further, when the opening / closing tool is opened to open the bag mouth, a clear opening sound is emitted from the opening / closing tool. These allow the user to more clearly recognize the open state of the opening / closing tool.

In the case of the synthetic resin-based packaging bag with an opening / closing tool according to the present invention, since it has the above-described configuration and exhibits the above-described action, the following effects <21> to <29> are obtained. is there.
[High closure and airtightness of the opening and closing tool in synthetic resin packaging bags]
<21> The opening / closing tool according to the present invention, as described above, can more clearly know the closed state and the opened state based on the tactile sensation and volume during the opening / closing tool operation. Here, the constituent elements that play an important function are the concave / convex tactile part of the male opening / closing member and the concave part for generating the notification sound, and further, the non-concave part and the concave part formed on the convex part for latching. Of these, the non-recesses are relatively formed by forming the recesses on the latching projections, so the essential components such as the uneven tactile sensor and the alarm sound generating recesses are It is only necessary to form a recess in the surface. This is because an essential indispensable component can be obtained simply by forming a recess in the latching convex portion of the male opening and closing member, and the region where the concave portion is formed is the upper and lower intermediate region of the latching convex portion. The airtightness failure and the airtightness deterioration of the opening / closing tool due to the recess do not occur. One of the reasons is that the female opening and closing member of the opening and closing tool does not have this kind of recess, and one of the other reasons is that the recess in the male opening and closing member exists in the upper and lower intermediate regions of the latching protrusion, This is because when the male and female opening and closing members are closed, the recesses on the latching convex portions of the male opening and closing members are completely buried in the female opening and closing members so as not to communicate with the outside of the opening and closing tool. In particular, when the concave portion is formed by pressure molding, the other portion of the latching convex portion is volume-expanded according to the concave amount of the concave portion, and the latching area of the latching convex portion is increased. Therefore, the degree of adhesion to the female opening / closing member increases. Therefore, the thing of this invention has the high airtightness of the opening / closing tool in a closed state, and can rely on this and can maintain the synthetic resin type packaging bag in a highly airtight closed state.
[High closure retention of opening / closing tool in plastic packaging bags]
<22> In an opening / closing tool comprising a pair of male opening / closing members and female opening / closing members, the upper and lower edges (upper edge) and lower edge (lower edge) of both male and female opening / closing members are directly recessed to form a recess there. In the case of a thing, the upper and lower edges of both male and female opening / closing members are serrated, thereby reducing the latching area of both male and female opening / closing members, so that the relative latching force between the male opening / closing member and the female opening / closing member is reduced. It will be weakened. On the other hand, in the case of this invention, the high closing holding force of an opening / closing tool is securable. One of the reasons is that the female opening / closing member does not have a cause (concave portion) for reducing the latching area. One of the other reasons is that even if the male opening and closing member has a recess, the recess is formed in the upper and lower intermediate regions of the latching protrusion and directly dents the upper and lower edges of the male opening and closing member. Because there is no. That is, this means that the male opening / closing member has no cause for reducing the latching area. In particular, when the concave portion formed in the upper and lower intermediate region of the latching convex portion is formed by pressure molding, the amount of material corresponding to the concave portion is on the upper edge side and / or the lower edge side of the male opening / closing member. Since the overhang extends to increase the latching area of the male opening / closing member, it is effective in securing a high closing holding force of the opening / closing tool. As is apparent from this description, in the case of the present invention, when the opening / closing tool is closed, the upper and lower end edges of both the male and female opening / closing members are firmly engaged with each other to exhibit a high closing holding force. Moreover, since the opening / closing tool in the present invention exhibits a high closing holding force, it is difficult for the synthetic resin-based packaging bag relied upon to be opened unintentionally.
[Good closure compatibility of opening and closing tools in synthetic resin packaging bags]
<23> With regard to a normal opening / closing device that does not increase the tactile sensation and sound when operating the opening / closing device, the male and female opening / closing members generally do not have the above-described recesses. Rather, it is easier to form both male and female opening / closing members without having a recess, and it is easier to maintain the closing compatibility of both members. In this regard, the opening / closing tool of the present invention is such that the female opening / closing member does not have this kind of recess, and the male opening / closing member is also formed with a recess only in the upper and lower intermediate regions of the latching protrusion. This is because there is a recess only in a very limited area of the opening / closing tool, and it is the upper and lower middle area of the latching protrusion, so that the recess has almost no effect on the closing suitability of the opening / closing tool. And good closure compatibility can be maintained. This closing compatibility also leads to the above-mentioned closing airtightness and closing holding force. In particular, the latching convex portion of the male opening / closing member has a vertically asymmetrical lateral cusp shape composed of a relatively small upper half portion and a relatively large lower half portion, and the relative relationship between the latching convex portions is In particular, a structure in which an uneven tactile sensation part or a notification sound generation concave part is formed on the large lower half side has good closing suitability. This is because the peak shape is not greatly impaired, and the original function of the male opening / closing member is maintained as it is.
[Good opening and closing operability of opening and closing tools in synthetic resin packaging bags]
<24> In the case of an opening / closing tool consisting of a male opening / closing member and a female opening / closing member that make a pair, the opening / closing operation that makes the male opening / closing member and the female opening / closing member occluded (closed) or disengaged (opened) Originally, the difficulty level is not high. Nonetheless, if the processing rate of both male and female opening / closing members is increased or the degree of deformation is increased to increase the feel and volume when operating the opening / closing tool, the opening / closing operability of the opening / closing tool will decrease accordingly, and both male and female opening / closing The member may be difficult to open and close. In the case of the opening / closing tool according to the present invention, only the male opening / closing member is provided with the uneven tactile sensation part and the notification sound generating concave part, and it is a non-concave part and a concave part in the convex part for latching. It is only necessary to form only the concave portion in the upper and lower intermediate regions of the latching convex portion. Since the processing rate and deformation degree seen from the whole opening / closing tool are considerably suppressed, both the male and female opening / closing members can be opened / closed without difficulty similarly to a normal opening / closing tool. In particular, it is desirable that the concave portion is formed on the large lower half portion side of the peak-shaped latching convex portion because the peak shape is not greatly impaired as described above. It is also desirable that the ratio T (%) of all the alarm sound generating recesses to the latching protrusions is within a range of 15 to 45%. Incidentally, when T is less than 15%, the above-mentioned tactile sensation and volume cannot be sufficiently obtained, and when T exceeds 45%, the amount of deformation becomes too large, which is not desirable. Therefore, in the case of the opening / closing tool according to the present invention, it is possible to ensure good opening / closing operability even though it is a type that obtains tactile sensation and volume during opening / closing operation.
[Improvement of opening / closing tactile feel and opening / closing sound feeling of opening / closing tools in synthetic resin packaging bags]
<25> Regarding the male opening and closing member of the opening / closing tool, the point [T> 45%] is pointed out as a problem because the deformation is too large, and the point [T <15%] is the tactile sensation described above. And pointed out that the volume was difficult to obtain. On the other hand, the male opening and closing member according to the present invention in which the required concave portion is formed in the latching convex portion is formed in the upper and lower intermediate regions of the latching convex portion, so that T is appropriately set. Thus, the above two problems can be easily solved. Needless to say, the concave portion formed on the large lower half side of the peak-shaped latching convex portion can easily solve the above two problems. Further, regarding T of such a male opening / closing member, in the case of positively setting [15% ≦ T ≦ 45%], since T is in an appropriate range, the above two problems are solved. In the case of the opening / closing tool according to the present invention, T can be appropriately set in this way, so that the opening / closing feeling and the opening / closing sound feeling can be improved as a type of opening / closing tool that obtains a tactile feeling and volume during opening / closing operation. .
[Improvement of opening / closing strength of synthetic resin packaging bags]
<26> When the opening / closing tool provided on the packaging bag is made of a pair of male and female opening / closing members, the opening / closing function of the opening / closing member is increased when the amount of deformation of both the male and female opening / closing members is increased to obtain the tactile sensation and volume described above. Not only does this decrease, but the strength of the opening / closing tool itself decreases. Such a decrease in strength is remarkable in an opening / closing tool that deletes a large number of male opening / closing members and female opening / closing members, even in the partial processing performed to obtain the tactile sensation and volume. On the other hand, since the opening / closing tool in the present invention is formed only in a specific portion of the male opening / closing member with a plurality of recesses with a small amount of processing, it is transformed into a female opening / closing member that does not perform this type of processing Of course, the amount of deformation of the male opening and closing member to be processed is suppressed to be small. Therefore, the opening / closing tool exhibits a suitable strength without causing a decrease in strength. In particular, the above-mentioned T with [15% ≦ T ≦ 45%] is desirable from the viewpoint of maintaining the strength of the opening / closing tool. Therefore, the strength of the opening / closing tool according to the present invention can be improved as a type of opening / closing tool that obtains the tactile sensation and volume described above.
[Simplification of the structure of the opening / closing tool in the plastic packaging bag]
<27> In the opening / closing tool according to the present invention, as described above, the main structure for obtaining the tactile sensation and volume described above is only the recess formed in the latching projection of the male opening / closing member. Therefore, the configuration of this type of opening / closing tool is extremely simple.
[Reduction of difficulty in manufacturing synthetic resin packaging bags]
<28> In the case of the synthetic resin-based packaging bag with an opening / closing tool according to the present invention, there is no difference with respect to the production of the bag body, and the opening / closing tool is provided in the bag body is almost the same as the conventional one. However, it is necessary to apply new processing to the opening / closing tool to obtain the tactile sensation and volume described above. This new processing is desired to be simple and less troublesome from the viewpoint of preventing the generation of defective products and increasing the yield of packaging bags. In this regard, as described above, the opening / closing tool of the present invention only processes the male opening / closing member of the male / female opening / closing member, and it is provided on the male opening / closing member and is easy to process. Since it is only necessary to form a recess in the intermediate region, the difficulty in manufacturing the packaging bag including the processing of the opening / closing tool is reduced. In particular, when the required concave portion is pressure-molded, the processing difficulty is further reduced as compared with the case where the concave portion is formed by partial deletion or partial cutting.
[Cost reduction of plastic packaging bags with opening and closing tools]
<29> In the case of a synthetic resin packaging bag with an opening / closing tool according to the present invention, it is provided with a special opening / closing tool that gives a clear opening / closing feel or generates a clear opening / closing sound when opening / closing. However, with this opening and closing tool, the manufacturing difficulty can be eased while simplifying the configuration and reducing the processing rate, and the yield of the product can be increased. Can measure. Moreover, since this is achieved without causing the strength of the opening / closing tool to decrease, it can be said that it is useful and beneficial.

It is the front view which showed one Embodiment of the synthetic resin packaging bag which concerns on this invention. 2A to 2B relate to the embodiment of FIG. 2A is an enlarged sectional view taken along line AA in FIG. 1, and FIG. 2B is an enlarged sectional view taken along line BB in FIG. 3A to 3E relate to the embodiment of FIG. 3A is a partially enlarged front view of the male opening and closing member, FIG. 3B is a partially enlarged plan view of the male opening and closing member, and FIG. 3C is a partially enlarged bottom surface of the male opening and closing member. FIG. 3 (D) is an enlarged sectional view taken along line DD of FIG. 3 (A), and FIG. 3 (E) is an enlarged sectional view taken along line EE of FIG. 3 (A). 4A to 4D relate to the embodiment of FIG. 4A is a partially enlarged front view of the female opening and closing member, FIG. 4B is a partially enlarged plan view of the female opening and closing member, and FIG. 4C is a partially enlarged bottom surface of the female opening and closing member. FIG. 4D is an enlarged sectional view taken along line DD of FIG. It is the front view which showed other embodiment of the synthetic resin type packaging bag which concerns on this invention. 6A to 6B relate to the embodiment of FIG. Among these, FIG. 6 (A) is an AA line enlarged sectional view of FIG. 5, and FIG. 6 (B) is a BB line enlarged sectional view of FIG. FIGS. 7A to 7B relate to the embodiment of FIG. 7A is a partially enlarged view of the inner surface of the bag-backing film, FIG. 7B is an enlarged sectional view taken along line BB in FIG. 7A, and FIG. It is an expanded sectional view which follows the CC line of 7 (A). 8D to 8G relate to the embodiment of FIG. 8D is an enlarged view taken along the line DD in FIG. 7A, FIG. 8E is an enlarged view taken along the line EE in FIG. 7A, and FIG. ) Is an enlarged sectional view taken along line FF in FIG. 7A, and FIG. 8G is an enlarged sectional view taken along line GG in FIG. 7A. FIGS. 7A to 7B relate to the embodiment of FIG. 9A is a partially enlarged view of the inner surface of the bag surface film, and FIG. 9B is an enlarged sectional view taken along line BB in FIG. 8A. FIGS. 10C to 10G relate to the embodiment of FIG. 10C is an enlarged sectional view taken along the line CC of FIG. 7A, FIG. 10D is an enlarged view taken along the line DD of FIG. 7A, and FIG. Is an enlarged view taken along line EE in FIG. 7A, FIG. 10F is an enlarged cross-sectional view taken along line FF in FIG. 7A, and FIG. 10G is G- in FIG. It is an expanded sectional view which follows a G line. It is the front view which each schematically showed various embodiments other than the above about the synthetic resin type packaging bag according to the present invention.

  Regarding the synthetic resin packaging bag according to the present invention, first, the basic bag structure, the main bag components, the material of the bag material, and the like will be described.

  As the synthetic resin packaging bags according to the present invention, those illustrated in all the illustrated embodiments and those illustrated in all of the following embodiments have a bag body 11 for the bag front film 12 and the back of the bag. The film 13 is mainly used to form a bag. Further, there is a case in which the bag body 11 is configured in a bag shape mainly including the bag front film 12 and the bag back film 13 and the side gusset and / or the bottom gusset. Other than these, the bag front film 12 and the bag back film 13 may be made of a series (one sheet) of films folded in half. In this case, the film crease is used as a fold, one of which becomes the bag front film 12 and the other the bag back film 13. Since all the constituent materials in such a case are synthetic resin type, of course, the bag 11 is also synthetic resin type.

  The synthetic resin packaging bag according to the present invention is a synthetic resin system as obvious, but the term “synthetic resin system” in the present invention refers to a single synthetic resin, a heterogeneous synthetic resin. These are broader terms including a combination of the above, a combination of synthetic resin and non-synthetic resin, and the like.

When the synthetic resin packaging bag according to the present invention is made of only a synthetic resin, the synthetic resin is mainly a thermoplastic resin, but in some cases, a thermosetting resin may be employed. More specifically, any one of the synthetic resins listed in the following a to n is selected and adopted, and the synthetic resin is used for the bag front film 12 and the bag back film 13 of the bag body 11. It has become. Polyethylene and polypropylene in the following can be collectively referred to as polyolefin.
a. Ionomer resin b. Various polyethylenes (high density polyethylene, medium density polyethylene, low density polyethylene, linear low density polyethylene, etc.)
c. Polyvinyl chloride film d. Polyvinylidene chloride film e. Polyvinyl chloride alcohol f. Polypropylene g. Polyester h. Polycarbonate i. Polystyrene j. Polyacrylonitrile k. Ethylene vinyl acetate copolymer l. Ethylene-vinyl alcohol copolymer m. Ethylene-methacrylic acid copolymer n. Nylon (polyimide, polyamide, etc.)

  When the synthetic resin packaging bag according to the present invention is composed of a combination of different kinds of synthetic resins, the synthetic resin is composed of, for example, a combination of two or more synthetic resins selected from the above a to n.

  When the synthetic resin-based packaging bag (bag body 11) according to the present invention is made of a composite material, the composite material is made of a laminated film in which a synthetic resin film is attached to the inner surface of a non-synthetic resin film (sheet). . About this, laminated products made of synthetic resin film and metal foil (example: aluminum foil), laminated products made of synthetic resin film and woven fabric, laminated products made of synthetic resin film and nonwoven fabric, synthetic resin film and mesh And a laminated product made of synthetic resin film and paper. As the synthetic resin in the laminated product, those listed in the above a to n are appropriately selected and adopted. In addition, as this kind of composite material in the present invention, metallized metal-based / non-metal vapor-deposited synthetic resins and ultrafine metal-based / non-metallic materials (for example, titanium oxide, silica glass, etc.) Synthetic resins made of new nanotechnological materials mixed with and adhering to them can also be used, and depending on the contents, they can be combined with both films 12 and 13.

  In the synthetic resin packaging bag according to the embodiment of the present invention shown in FIGS. 1 to 4, one opening / closing tool 31 for opening and closing the bag mouth is provided inside the bag body 11 on the bag mouth side. Further, in the embodiment of the synthetic resin packaging bag according to the present invention shown in FIGS. 5 to 10, the same kind of plural opening / closing tools 31 for opening and closing the bag mouth, or different kinds of plural opening and closing tools for opening and closing the bag mouth. The opening / closing tools 31 and 51 are provided inside the bag body 11 on the bag mouth side. Specifically, the plurality of opening / closing tools 31 and 51 includes a horizontally long male opening / closing member 32 and a horizontally long female opening / closing member 38 which can be engaged with each other, and the other opening / closing device 51 is also mutually connected. It is composed of a horizontally long male opening / closing member 52 and a horizontally long female opening / closing member 58 which can be engaged with each other. In the case of the plurality of opening / closing tools 31 and 51, in one example, they are integrally formed on the inner surfaces of the front and back films 12 and 13, and in another example, the opening / closing tools 31 and 51 having a tape shape are heated on the inner surfaces of the front and back films 12 and 13. It is bonded (bonded and integrated) by a sealing means or the like.

  As described above, the opening / closing tools 31 and 51 are referred to as chucks, fasteners, zippers, and the like, and are also referred to as occlusion tools. The synthetic resin that is the material of the opening / closing tools 31 and 51 is made of the same material or the same material as the both films 12 and 13 when it is integrally formed on the inner surfaces of the front and back films 12 and 13. . Further, the opening / closing tool 31/51 bonded to the inner surface of both the front and back films 12, 13 is the same material or the same material as the both films 12, 13, or the both films 12, A synthetic resin having an affinity for 13 is employed. Specific synthetic resins in this case include low density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer, polypropylene, and the like, and an appropriate one is selected and adopted.

  Next, the synthetic resin packaging bag with an opening / closing tool according to the present invention will be described more specifically with respect to the embodiment illustrated in FIGS.

  In the case of the embodiment shown in FIGS. 1 to 4 in the synthetic resin packaging bag according to the present invention, the bag body 11 is formed by superimposing the bag front film 12 and the bag back film 13 on each other. In addition, the predetermined peripheral portions of the films 12 and 13 are sealed to form a bag shape. Therefore, the bag body 11 has a plurality of seal portions. More specifically, side seals 14 and 15 are provided on both sides of the bag body 11 via heat sealing means, and heat sealing means are also provided on the upper side and lower side of the bag body 11. A top seal 16 and a bottom seal 17 are provided. In FIG. 1, the top seal 16 is indicated by an imaginary line (two-dot chain line) because the bag mouth at the upper part of the bag body in an unsealed state is sealed after the bag is packed in the bag body 11. It means that. Of course, the top seal 16 may not be applied to the bag mouth at the top of the bag body. On the other hand, a relative height difference (step) as shown in FIGS. 2A and 2B may be given to the upper end portion of the bag front film 12 and the upper end portion of the bag back film 13. That is, either one of the films 12 and 13 is made higher or lower than the other. In the upper end portions of the films 12 and 13 having different heights, horizontally long ridges 12a and 13a that are horizontally long across the bag width direction and are used for preventing slipping may be formed on the inner surfaces of the respective upper end portions. . The height difference (step) and the ridges 12a and 13a at the upper end portions of both films facilitate and ensure the operation of opening the bag mouth of the bag body 11 widely. In the case of the bag body 11 to which the top seal 16 is not applied, the shape is as shown in FIG. 2A from the beginning. In the case of the bag body 11 to which the top seal 16 is applied, the upper end portion is cut off and opened. After that, it becomes a form as shown in FIGS. Each explanation item described in this paragraph is common to all the embodiments in the present invention. Therefore, these items are also appropriately adopted in each embodiment of the present invention described later.

  Three typical examples of the bag 11 of this embodiment when a packaged object is packaged and sealed are as follows. The 1st example is a type which makes the bottom part side (lower side part) of the bag body 11 the filling port of to-be-packaged goods. In the case of this type, since both the side seals 14 and 15 and the top seal 16 are already formed in the bag body 11 in a state before packaging, the lower side portion of the bag body 11 is filled after the packaged material is filled. A bottom seal 17 is applied. The 2nd example is a type which makes the bag mouth side (upper part) of the bag body 11 the filling port of a to-be-packaged item. In the case of this type, both side seals 14 and 15 and the bottom seal 17 are already formed on the bag body 11 in a state before packaging. A top seal 16 is applied. The third example is a type in which the bag body 11 is left in an empty state, and an article to be packaged is appropriately placed in the bag body 11. In the case of this type, the side seals 14 and 15 and the bottom seal 17 are applied to the bag body 11, but the top seal 16 is not applied to the mouth side (upper side) of the bag body 11. Since the explanation items described in this paragraph are common items of all the embodiments in the present invention, these items may be appropriately adopted in each embodiment of the present invention described later.

  The opening / closing tool 31 seen in the embodiment of FIGS. 1 to 4 is of an open / close confirmation type that can confirm its open / closed state, and is horizontally long. The opening / closing confirmation type opening / closing tool 31 is hereinafter referred to as “opening / closing confirmation type opening / closing tool” or simply referred to as “opening / closing tool”.

  The opening / closing confirmation type opening / closing tool 31 is provided in such a manner as to cover both sides of the bag body 11 at a portion on the bag mouth side in the bag body 11. More specifically, the male opening / closing member 32 and the female opening / closing member 38 of the opening / closing tool 31 are provided on the inner surface of the bag front film 12 and the inner surface of the bag back film 13 so as to face each other. Both the opening and closing members 32 and 38 correspond to be freely engageable.

  The male opening / closing member 32 of the opening / closing confirmation type opening / closing tool 31 illustrated in FIGS. 1 to 4 is configured as follows, as is apparent from FIGS. 2 (A), 2 (B), 3 (D), and 3 (E). It is what has.

  Referring to FIGS. 2A and 2B and FIGS. 3D and 3E, in the case of the male opening and closing member 32, the cross-sectional shape based on the horizontal center line is vertically asymmetric. The male opening / closing member 32 also has a male base 33 projecting from the inner surface of the bag back film 13 toward the inner surface of the bag front film 12, and a latching protrusion integrally formed on the distal end side of the male base 33. 34. The latching convex portion 34 includes a concave / convex tactile portion 35 and a notification sound generating concave portion 37.

  The latching convex portion 34 illustrated in FIGS. 2A, 2B, 3D, and 3E has a laterally pointed asymmetrical cross-sectional shape. Furthermore, the convex portion 34 has an upper half portion 34a that is relatively small and a lower half portion 34b that is relatively large. In this case, the surface of the upper half portion 34a and the surface of the lower half portion 34b are made of a curved inclined surface or a flat inclined surface. Incidentally, the upper half portion 34a and the lower half portion 34b in the illustrated example are inclined surfaces whose surfaces are gently curved. On the back side of the convex portion 34, there are two latching surfaces 34 c and 34 d separated vertically from the male base 33.

  In the case of the latching convex portion 34 described above, the uneven tactile sensation portion 35 for confirming the closed state when the opening / closing tool 31 is closed is a part of the male opening / closing member 32, that is, the upper and lower intermediate regions of the latching convex portion 34. Provided. Furthermore, the uneven tactile sensation portion 35 is provided on the upper half portion 34a and / or the lower half portion 34b of the latching convex portion 34, and is provided on the upper edge and the lower edge of the latching convex portion 34. Absent. In the case of the illustrated example as a typical example, the uneven tactile sensation portion 35 is provided in the lower half portion 34 b of the latching convex portion 34. As is obvious, the lower half portion 34b has a surface area larger than that of the upper half portion 34a, so that it is easy to form the uneven tactile sensation portion 35 here. In the case of such an uneven tactile sensation part 35, the male opening / closing member 32 has non-recesses 36 having no recesses and recesses 37 having recesses arranged alternately along the length direction of the male opening / closing member 32. It is what. The sizes of the non-recessed portions 36 and the recessed portions 37, the intervals between the non-recessed portions 36, the intervals between the recessed portions 37, and the like can be arbitrarily set. Furthermore, each non-recess 36 can be the same or different, and each recess 37 can be the same or different. As such an example, the concave portion 37 is made smaller as it goes from one side (side seal 14 side) to the other side (side seal 15 side), or the other side of the bag body 11. The concave portion 37 may become smaller as it goes from the portion (side seal 15 side) to one side portion (side seal 14 side). In the case of the illustrated example, the dimensions of the non-concave portions 36 and the dimensions of the concave portions 37 are equal to each other, and these are arranged in a line at equal intervals.

  In the case of the uneven tactile sensation part 35 on the latching convex part 34 of the male opening / closing member 32, a plurality of (many) non-recessed parts 36 and a plurality of (many) recessed parts 37 alternate along the length direction of the male opening / closing member 32. Are lined up. Each recess 37 in this case also serves as a notification sound generating recess. Accordingly, the reference numeral “37” used in the following description also serves as a reference sign that indicates the notification sound generating recess, and the reference sign “37” also indicates the reference sound generation recess in each of the accompanying drawings.

  Speaking of the male opening and closing member 32 having the concave and convex tactile portion 35 and the notification sound generating concave portion 37 on the latching convex portion 34, the concave and convex tactile portion 35 and the notification sound generating concave portion 37 of the latching convex portion 34 are molded. It can be formed by any means such as means or cutting means. Of these, a molding processing means is more desirable. Incidentally, in the case of the opening / closing tool 31 of the illustrated example, a plurality of (many) alarm sound generating recesses are formed by heating the latching projection 34 to such a level that it can be plastically deformed and pressing a molding jig of the molding device on it. 37 is pressure molded. In this case, the respective notification sound generating recesses 37 also serve as the respective recesses 37 of the uneven tactile sensor 35. In addition, each non-recessed portion 36 of the uneven tactile sensation portion 35 is also a non-processed portion that is relatively generated by forming each recessed portion 37. Therefore, in the case of each non-recess 36, it is formed simultaneously with the pressure forming of each recess 37 rather than directly forming it. As is apparent from this description, the uneven tactile sensation part 35, the notification sound generating concave part 37, and the like can be obtained simply by forming the required number of concave parts 37 in the latching convex part 34.

T = [C × N] / [Q] × [100] (1)
In the above equation (1), Q is the volume of the latching convex portion 34, C is the volume per concave portion for generating the notification sound 37, N is the number of concave portions 37 for generating the notification sound in the latching convex portion 34, T indicates the ratio (%) of all the alarm sound generating recesses 37 to the latching protrusions 34.

  In the present invention, it is desirable that T in the above formula (1) is in the range of 15 to 45%. One of the reasons is that when T is less than 15%, the above-mentioned tactile sensation and volume cannot be obtained sufficiently, and when T exceeds 45%, the amount of deformation of the latching convex portion 34 becomes large. It is because it is too much. Incidentally, with respect to the opening / closing confirmation type opening / closing tool 31 when the deformation amount of the latching convex portion 34 becomes too large, the male opening / closing member 32 and the female opening / closing member 38 tend to become difficult to bite. Another reason is that in the case of [15% ≦ T ≦ 45%], the opening / closing touch feeling and the opening / closing sound feeling can be improved, and the strength of this type of opening / closing tool can be improved. It is further desirable that T in the above formula (1) is in the range of 15 to 45%.

  The female opening / closing member 38 of the opening / closing confirmation type opening / closing tool 31 illustrated in FIGS. 1 to 4 has the following configuration, as is apparent from FIGS. 2 (A), 2 (B) and 5 (D). is there.

  2A and 2B and FIG. 5D, in the case of the female opening / closing member 38, the cross-sectional shape with respect to the horizontal center line is vertically symmetric. The female opening / closing member 38 includes a female base 39 projecting from the inner surface of the bag front film 12 toward the inner surface of the bag back film 13 and two upper and lower flaps 40. 40. The two flaps 40 and 40 are for latching corresponding to the latching convex portion 34 of the male opening / closing member 32. The front ends of the flaps 40 and 40 are bent inwardly as latching pieces 41a and 41b, and the inner surfaces of the latching pieces 41a and 41b correspond to the latching surfaces 34c and 34d of the male opening and closing member 32, respectively. Stop surfaces 41c and 41d are formed. Further, a latching space 42 is interposed between the upper and lower flaps 40, 40, and the latching convex portion 34 of the male opening / closing member 32 enters the latching space 42. In addition, the latching convex portion 34 of the male opening and closing member 32 is detached from the latching space 42.

  As the synthetic resin packaging bag with an opening / closing tool according to the present invention, the embodiment illustrated in FIGS. 1 to 4 is configured to open and close the bag mouth of the bag body 11 via the opening / closing confirmation type opening / closing tool 31. It becomes as follows.

  1 to 4, when closing the bag mouth of the bag body 11, a predetermined latching portion 34 of the male opening / closing member 32 of the opening / closing confirmation type opening / closing tool 31 is allowed to enter the female opening / closing member 38. A closing force is applied to both the male and female opening / closing members 32 and 38. This operation is substantially the same as that found in ordinary switches. In one side of the bag body 11, one end of the open / close confirmation type opening / closing tool 31 is sandwiched between the front and back films 12 and 13 with two fingers of a thumb and an index finger, and the pressurized state by this clamping is determined. The two fingers are slid toward the other end of the open / close confirmation type opening / closing tool 31 while maintaining.

  When the fingertip slide operation is performed while pressing the predetermined portion with two fingers in order to close the male and female open / close members 32 and 38 of the open / close confirmation type opening / closing tool 31, the latching convex portion 34 of the male open / close member 32 has one end thereof. The female opening / closing member 38 is sequentially entered from the side. Further, when such a two-finger slide operation reaches from one side portion to the other side portion of the bag body 11, the entirety including one end portion to the other end portion of the latching convex portion 34 enters the female opening / closing member 38. Therefore, both the male and female open / close members 32 and 38 are completely engaged (locked). That is, when the latching convex portion 34 of the male opening / closing member 32 is immersed in both the flaps 40, 40 of the female opening / closing member 38, the latching surfaces 34c, 34d of the latching convex portion 34 and both the flaps 40, 40 are provided. Since the latching pieces 41a and 41b (the latching surfaces 41c and 41d) are closely engaged with each other, the closing of the open / close confirmation type opening / closing tool 31 is completed as prescribed. Thus, the closed state of the bag mouth of the bag body 11 is held by the open / close confirmation type opening / closing tool 31.

  The two fingers at the time of the closing operation slide along the opening / closing confirmation type opening / closing tool 31 although it is from above the front and back films 12 and 13. Moreover, since the two fingers pressing the predetermined portion of the bag body 11 with a corresponding force receive a reaction force from the pressed portion, the open / close confirmation type opening / closing tool 31 is closed. I can feel the situation firmly. That is, it is possible to clearly feel the unevenness of the uneven tactile sensation part 35 on the latching convex part 34 of the male opening / closing member 32. More specifically, the tactile sensation of the two fingers at this time becomes “strong” in the substantial convex part (non-recessed part 36) of the uneven tactile part 35 and “weak” in the concave part 37 of the uneven tactile part 35, Since the “strong tactile sensation” and the “weak tactile sensation” are repeated at regular intervals from the start to the end of the closing operation of the open / close confirmation type opening / closing tool 31, the opening / closing confirmation type opening / closing tool 31 is closed. The situation can be clearly recognized at the fingertips from start to finish.

  During the closing operation, the male and female opening / closing members 32 and 38 rub against each other and an air flow between them or a closing sound due to air vibration is generated. Among them, the rubbing noise is generated when the latching convex portion 34 of the male opening / closing member 32 is immersed in both the flaps 40, 40 of the female opening / closing member 38, in particular, the upper half of the latching convex portion 34. This is caused by rubbing the portion 34a / lower half portion 34b and the latching pieces 41a / 41b of the flaps 40/40 while elastically deforming. On the other hand, the sound caused by the flow of air or air vibration can be said to be a whistling sound. This is because when the latching convex portion 34 of the male opening / closing member 32 is pressed into the both flaps 40, 40 of the female opening / closing member 38, the air in the flaps 40, 40 is blown out to the outside. This is because the whistle phenomenon occurs. It can be said that this whistling phenomenon is amplified because the alarm sound generating recess 37 of the latching protrusion 34 is easily deformed. That is, it can be said that the whistling phenomenon is amplified by the elastic deformation of the notification sound generating recess 37 of the latching projection 34 due to the pressing action when the opening / closing tool is closed. Of course, the rubbing sound and whistling sound in such a closing sound are generated synchronously and propagated to the listener (opening / closing device closing operator) at the same time. Will be heard. It is difficult to accurately express the closing sound composed of this complex sound, but if it is expressed sensuously using onomatopoeia, it will exhibit a sound quality such as “Phip chip chip chip”. It is. The sound of the closing sound is not strong and the sound pressure is roughly in the range of 40 to 60 dB, although there is variation depending on the closing speed of the opening / closing confirmation type opening / closing tool 31. If anything, this closing sound often falls below 50 dB.

  1 to 4, when opening the bag opening of the bag body 11, the latching convex part 34 of the male opening / closing member 32 in the female opening / closing member 38 of the opening / closing confirmation type opening / closing tool 31 is separated from the predetermined opening. The opening force is applied to the male and female opening / closing members 32 and 38. This operation is substantially the same as that found in ordinary opening / closing devices. At the bag mouth of the bag body 11, the upper end portion of the bag front film 12 and the upper end portion of the bag back film 13 are respectively grasped by the fingertips of both hands, and the force in the direction in which the male and female opening / closing members are disengaged is applied. It adds to each upper end part of front and back film 12 * 13. With respect to the latching convex portion 34 at this time, the upper half portion 34a and the lower half portion 34b elastically deform both the flaps 40 and 40 with the latching pieces 41a and 41b in the direction to open and open them. Escape out of 40. Thus, when the open / close confirmation type opening / closing tool 31 is opened, the bag mouth of the bag body 11 is opened.

  During the opening operation, both the male and female open / close members 32 and 38 rub against each other, and an air flow between them or an open sound due to air vibrations are generated. Regarding the rubbing sound in this case, when the latching convex portion 34 of the male opening / closing member 32 is detached from both the flaps 40, 40 of the female opening / closing member 38, the upper half portion 34a and the lower half of the latching convex portion 34 are provided. This is because the portion 34b and the latching pieces 41a and 41b of the flaps 40 and 40 rub against each other while being elastically deformed. Furthermore, in the case of sound due to air flow or air vibration, the whistling sound is the same as described above. This is because the air pressure flows into the flaps 40 and 40 at the same time when the latching convex portion 34 of the male opening and closing member 32 escapes from both the flaps 40 and 40 of the female opening and closing member 38. It is. This whistling phenomenon tends to be amplified because the notification sound generating concave portion 37 of the latching convex portion 34 whose volume has been reduced by deformation when the opening / closing tool is closed has a sucker shape. In addition, the rubbing sound and whistling sound in this open sound are also generated synchronously and propagated to the listener (opening / closing device closing operator) at the same time. Will be heard. It is difficult to accurately express the closing sound composed of such complex sounds, but if it is expressed sensuously by using onomatopoeia, “buchibuchibuchibuchi…” or “baribari bari bari ...” The sound quality is such that the short sound is continuous. Incidentally, when the opening speed of the opening / closing tool 31 is relatively slow, the sound quality is the same as the former, and when the opening speed of the opening / closing confirmation type opening / closing tool 31 is relatively fast, the sound quality is the same as the latter. . The sound of the open sound is not strong and the sound pressure is also in the range of approximately 40 to 60 dB, and is often 50 to 60 dB.

  Below, the thing of embodiment illustrated by FIGS. 5-10 is demonstrated below about the synthetic resin type packaging bag concerning this invention.

  In the case of the embodiment illustrated in FIGS. 5 to 10, a plurality of opening / closing tools 31 and 51 are provided in a plurality of stages on the bag mouth side in the bag body 11. More specifically, on the bag mouth side in the bag body 11, two horizontally long opening / closing tools 31 and 51 are provided on the inner surface of the bag front film 12 and the inner surface of the bag back film 13 in two upper and lower stages. . Regarding the type of the opening / closing tool, one opening / closing tool 31 is the “opening / closing confirmation type” described in the previous example. The other opening / closing tool 51 is a “non-opening / closing confirmation type” which is common to the one opening / closing tool 31 with respect to the basic configuration, but does not have the above-described uneven tactile sensation part 35 or the alarm sound generation recess 37. In other words, the other opening / closing tool 51 can be said to be a normal opening / closing tool. Therefore, in the case of the plurality of opening / closing tools 31 and 51, the types are different in that one is an “open / close confirmation type” and the other is a “non-open / close confirmation type”. Here, regarding the non-opening / closing confirmation type opening / closing tool 51, there is no opening / closing confirmation by the concave / convex tactile sense part 35 or the alarm sound generating concave part 37, but the range that a normal opening / closing tool can achieve such as visual observation and normal touch feeling. You can check the opening and closing inside. 5 to 10, the male opening / closing member 32 and the female opening / closing member 38 can be engaged with each other, and the male opening / closing member 52 and the female opening / closing member can be engaged with each other. 58 corresponds to the bite freely. In the case of the non-opening / closing confirmation type opening / closing tool 31, hereinafter, it is also referred to as “non-opening / closing confirmation type opening / closing tool” or simply “opening / closing tool”.

  Any of the opening / closing confirmation type opening / closing tool 31 and the non-opening / closing confirmation type opening / closing tool 51 provided on the bag mouth side in the bag body 11 may be higher. That is, the opening / closing confirmation type opening / closing tool 31 may be the upper stage and the non-opening / closing confirmation type opening / closing tool 51 may be the lower stage, or the non-opening / closing confirmation type opening / closing tool 51 may be the upper stage and the opening / closing confirmation type opening / closing tool 31 may be the lower stage. In the embodiment of FIGS. 5 to 10, the open / close confirmation type opening / closing tool 31 is on the upper stage and the non-opening / closing confirmation type opening / closing tool 51 is on the lower stage. The reason why the plurality of opening / closing tools 31 and 51 are provided in the bag body 11 is that the bag body 11 is required when a packaged object made of a fine powder, a viscous body, a liquid-containing material, or a liquid is packed in the bag body 11. This is to further improve the closing performance, sealing performance, and leakage prevention performance. That is, not only the opening / closing confirmation type opening / closing tool 31 is provided in the bag body 11 but also the non-opening / closing confirmation type opening / closing tool 51 is additionally provided, so that the above-mentioned characteristics are further enhanced.

  In the case of the opening / closing confirmation type opening / closing tool 31 provided on the bag mouth side in the bag body 11 and the opening / closing confirmation type opening / closing tool 31 provided above the non-opening / closing confirmation type opening / closing tool 51 in the embodiment of FIGS. As in the previous example, the male opening / closing member 32 and the female opening / closing member 38 are provided. The male and female opening / closing members 32 and 38 in FIGS. 5 to 10 have the same configuration as that described with reference to FIGS. 1 to 4 and the same as described with reference to FIGS. It is provided on the inner surface of the film 12 and the inner surface of the bag back film 13. Therefore, the description of the opening / closing confirmation type opening / closing tool 31 in the embodiment of FIGS. 5 to 10 is omitted by referring to the contents of the previous example.

  The non-opening / closing confirmation type opening / closing tool 51 provided on the bag mouth side in the bag body 11 in the embodiment of FIGS. The basic configuration is the same as that of the open / close confirmation type opening / closing tool 31. Hereinafter, the non-opening / closing confirmation type opening / closing tool 51 will be described.

  As is apparent with reference to FIGS. 6A, 6B, 7B, 7C, and 9B, the male opening / closing member 52 of the non-opening / closing confirmation type opening / closing tool 51 has its horizontal center. The cross-sectional shape based on the line is vertically asymmetric. The male opening / closing member 52 also has a male base 53 protruding from the inner surface of the bag back film 12 toward the inner surface of the bag front film 13 and a latching convex portion integrally formed on the front end side of the male base 53. 54.

  The latching convex portion 54 illustrated in each of FIGS. 6A, 6B, 7B, 7C, and 9B is the same as the latching convex portion 34 described above. Similarly, the cross-sectional shape is a laterally pointed asymmetric shape. Furthermore, the convex portion 54 is such that the upper half portion 54a is relatively small and the lower half portion 54b is relatively large. In this case, the surface of the upper half portion 54a and the surface of the lower half portion 54b are also composed of a curved inclined surface or a flat inclined surface, and in the illustrated example, the upper half portion is the same as the convex portion 34 described above. The surface of 34a and the lower half part 34b consists of the inclined surface which curved gently. Further, on the back side of the convex portion 54, there are also two latching surfaces 54c and 54d separated vertically from the male base 53.

  As is apparent with reference to FIGS. 6 (A), 6 (B), 7 (B), 7 (C), and 9 (B), the female opening / closing member 58 of the non-opening / closing confirmation type opening / closing tool 51 is provided as described above. The female opening / closing member 38 has the same configuration. Therefore, also in the case of the female opening / closing member 58, the cross-sectional shape with respect to the horizontal center line is vertically symmetric. Further, the female opening / closing member 58 includes a female base 59 projecting from the inner surface of the bag back film 13 toward the inner surface of the bag front film 12, and two upper and lower flaps 60 integrally formed on the distal end side of the female base 59.・ 60. Both the flaps 60 and 60 are for latching corresponding to the latching convex portion 34 of the male opening / closing member 32. The front ends of the flaps 60 and 60 are bent inwardly as latching pieces 61a and 61b, respectively, and the inner surfaces of the latching pieces 61a and 61b correspond to the latching surfaces 54c and 54d of the male opening and closing member 52, respectively. Stop surfaces 61c and 61d are formed. Further, a latching space 62 is interposed between the upper and lower flaps 60, 60, and the latching convex portion 54 of the male opening / closing member 52 enters the latching space 62. In addition, the latching convex portion 54 of the male opening / closing member 52 is detached from the latching space 62.

  The embodiment illustrated in FIG. 5 to FIG. 10 as a synthetic resin packaging bag with an opening / closing tool according to the present invention has its bag mouth opened via an opening / closing confirmation type opening / closing tool 31 or a non-opening / closing confirmation type opening / closing tool 51. When opening and closing:

  5 to 10, when closing the bag opening of the bag body 11, the latching convex portion 34 of the male opening / closing member 32 in the opening / closing confirmation type opening / closing tool 31 is caused to enter the female opening / closing member 38, so 32/38 is brought into an occlusal state, or the latching convex portion 54 of the male opening / closing member 52 in the non-opening / closing confirmation type opening / closing tool 51 is made to enter the female opening / closing member 58 so that the male and female opening / closing members 52, 58 are engaged. Or Furthermore, as described above, the opening / closing confirmation type opening / closing tool 31 is opened from above the front and back films 12 and 13 with the two fingers of the thumb and the index finger on one side of the bag body 11 as described above. The two fingers may be slid toward the other end of the open / close confirmation type opening / closing tool 31 while maintaining the pressure applied by the clamping. As for the non-opening / closing confirmation type opening / closing tool 51, as described above, one end of the non-opening / closing confirmation type opening / closing tool 51 is sandwiched between the front and back films 12 and 13 with predetermined two fingers, and pressurization by this clamping is performed. The two fingers may be slid toward the other end of the non-open / close confirmation type opening / closing tool 51 while maintaining the state. Thus, both the opening / closing tools 31 and 51 are in an occlusal state as shown in FIGS. 6A and 6B, whereby the closed state of the bag mouth of the bag body 11 is held by the opening / closing confirmation type opening / closing tool 31. As for the closing operation in this case, both the opening / closing tools 31 and 51 can be closed one by one by operating the fingertips, and both the opening / closing tools 31 and 51 can be closed simultaneously.

  5 to 10, when opening the bag opening of the bag body 11, the latching convex portion 34 of the male opening / closing member 32 in the female opening / closing member 38 of the opening / closing confirmation type opening / closing tool 31 is detached therefrom, or In order to release the latching convex portion 54 of the male opening / closing member 52 in the female opening / closing member 58 of the non-opening / closing confirmation type opening / closing tool 51, a predetermined opening force is applied to both the male and female opening / closing members 32, 38, Add to both male and female opening and closing members 52 and 58. At this time, the upper end portion of the bag front film 12 and the upper end portion of the bag back film 13 are respectively held by the fingertips of both hands at the bag mouth of the bag body 11, and the engagement of the two pairs of male and female opening / closing members is released. A directional force is applied to the upper ends of the front and back films 12 and 13. In this case, the latching convex portion 34 of the male opening / closing member 32 is elastically deformed in a direction in which the upper half portion 34a and the lower half portion 34b push open both the flaps 40 and 40 with the latching pieces 41a and 41b. Let them escape out of both flaps 40 and 40. In synchronization with this, the latching convex portion 54 of the male opening / closing member 52 is also elastically deformed in the direction in which the upper half portion 54a and the lower half portion 54b push and open both the flaps 60 and 60 with the latching pieces 61a and 61b. Escape to the outside of both flaps 60. Thus, when both the opening / closing tools 31 and 51 are opened, the bag mouth of the bag body 11 is opened.

  5 to 10, when both the opening / closing tools 31 and 51 are closed or opened to open and close the bag mouth of the bag body 11, the opening / closing confirmation status is not the same as the opening / closing confirmation type opening / closing tool 31. This is different from the confirmation type opening / closing tool 51. First, regarding the opening / closing confirmation type opening / closing tool 31, in the case of this opening / closing tool 31, the closing closure described above is relied on the concave / convex tactile part 35 or the alarm sound generating concave part 37 in the lower half part 54 b of the latching convex part 34. Since a tactile sensation, a closing sound, and an opening sound are obtained, it is possible to clearly check the opening / closing status of both the opening / closing tools 31 and 51. Next, in the case of the non-opening / closing confirmation type opening / closing tool 51, the opening / closing tool 41 does not have the uneven tactile sensation part 35 or the notification sound generating recessed part 37. Therefore, in the case of the non-opening / closing confirmation type opening / closing tool 51, even if the closing touch feeling / closing sound / opening sound is not as high as the opening / closing confirmation type opening / closing tool 31, the closing touch feeling / closing sound / opening is the same as that of the existing opening / closing switch. Sound is obtained.

  In the case of both opening / closing tools 31 and 51 in the embodiment of FIGS. 5 to 10, there are the male opening / closing member 32 of the opening / closing tool 31 and the male opening / closing member 52 of the opening / closing tool 51 on the inner surface of the bag back film 13. There are a female opening / closing member 38 of the opening / closing tool 31 and a female opening / closing member 58 of the opening / closing tool 51 on the inner surface of the film 12. In this regard, there may be all male opening / closing members 32, 52 on either one of the inner surfaces of both films and all female opening / closing members 38, 58 on the other of the inner surfaces of both films. This matter can be similarly applied to the next embodiment illustrated in FIG.

  Next, the synthetic resin packaging bag according to the present invention will be described with reference to the embodiment illustrated in FIG.

  In the embodiment illustrated in FIG. 11 (A), the upper and lower two-stage opening / closing devices 31 and 51 provided on the bag mouth side in the bag body 11 have the non-opening / closing confirmation type opening / closing device 51 in a relatively upper position. Thus, the open / close confirmation type opening / closing tool 31 is located in the lower position. In the case of the embodiment illustrated in FIG. 11B, both the upper and lower two-stage opening / closing tools provided on the bag mouth side in the bag body 11 are each composed of the opening / closing confirmation type opening / closing tool 31. In the embodiment illustrated in FIG. 11C, the opening / closing confirmation type opening / closing tool 31 and the non-opening / closing confirmation type opening / closing tool 51 are provided in three upper and lower stages on the bag mouth side in the bag body 11. That is, the opening / closing confirmation type opening / closing tool 31 is located in the upper stage, the non-opening / closing confirmation type opening / closing tool 51 is located in the middle stage, and the opening / closing confirmation type opening / closing tool 31 is located in the lower stage. Also in the embodiment illustrated in FIG. 11D, the open / close confirmation type opening / closing tool 31 and the non-opening / closing confirmation type opening / closing tool 51 are provided in three upper and lower stages on the bag mouth side in the bag body 11. In the upper stage, the non-opening / closing confirmation type opening / closing tool 51 is located, in the middle stage, the opening / closing confirmation type opening / closing tool 31 is located, and in the lower stage, the opening / closing confirmation type opening / closing tool 51 is located.

  Items omitted in the embodiments illustrated in FIGS. 11A to 11D are substantially the same as or equivalent to the contents described in the embodiments of FIGS. Therefore, other matters in the embodiments of FIGS. 11A to 11D are omitted by referring to the explanation items in the embodiments of FIGS.

  The synthetic resin packaging bag according to the present invention is provided with an opening / closing confirmation type opening / closing tool, and thereby, it is possible to obtain a closing tactile sensation, a closing sound, an opening sound, etc. To be clear. Since this technical content can be applied to the technical field of packaging bags, it has sufficient industrial applicability.

DESCRIPTION OF SYMBOLS 11 Bag body 12 Bag surface film 12a Convex strip 13 Bag back film 13a Convex strip 14 Side seal 15 Side seal 16 Top seal 17 Bottom seal 31 Opening / closing confirmation type opening / closing tool 32 Male opening / closing member 33 Male base 34 For latching Convex portion 34a Upper half portion 34b Lower half portion 34c Latching surface 34d Latching surface 35 Uneven surface tactile portion 36 Non-recessed portion 37 Notifying sound generating recess 38 Female opening / closing member 39 Female base body 40 Flap 41a Latching piece 41b Latching piece 41c Hooking Stopping surface 41d Hanging surface 42 Latching space 51 Non-opening / closing confirmation type opening / closing tool 52 Male opening / closing member 53 Male base 54 Latching projection 54a Upper half 54b Lower half 54c Latching surface 54d Latching Surface 58 Female opening / closing member 59 Female base 60 Flap 61a Latching piece 61b Latching The space portion of the piece 61c hook stop surface 61d hook stop surface 62-seat for preventing

Claims (6)

Comprising a packaging bag and a horizontally long opening / closing tool for opening and closing the bag mouth of the bag, and
The opening / closing tool is made of a synthetic resin and includes a horizontally long male opening and closing member and a synthetic resin and a horizontally long female opening and closing member. The pair of male and female opening and closing members correspond to each other so that they can be engaged with each other freely. Being and
With respect to the opening / closing tool, the male opening / closing member and the female opening / closing member maintain a facing relationship in which they can freely engage with each other, a bag mouth side portion in the bag body, and a horizontally long posture over both side portions in the bag body. It is provided on the inner surface of the bag front film and the inner surface of the bag back film, and
With respect to the bag body in which the opening / closing tool is provided inside the bag mouth side, the front end of the male opening / closing member enters the female opening / closing member and the male / male opening / closing member engages to close the bag mouth. And the opening of the male opening / closing member is released from the inside of the female opening / closing member and the opening of the bag opening is released when the male / male opening / closing member is disengaged. In plastic packaging bags with opening and closing tools,
As the opening / closing tool, comprising an opening / closing confirmation type opening / closing tool capable of confirming a closed state and an opened state; and
Of the two films for the front and back of the bag, when one of the films is one film and the other film is the other film, the opening / closing confirmation mold provided on the inner surface of the one film The male opening / closing member of the opening / closing tool has a male base projecting from the inner surface of the one film toward the inner surface of the other film, and a latching protrusion integrally formed on the front end side of the male base. And a female opening / closing member of the opening / closing confirmation type opening / closing tool provided on the inner surface of the other film has a pair of upper and lower latching flaps protruding from the inner surface of the other film toward the inner surface of the one film, Having a space for latching interposed between the upper and lower flaps, and
For the latching convex portion and the latching space portion, the latching convex portion enters or leaves the latching space portion, and About the latching convex part and the pair of upper and lower latching flaps, the latching convex part is in a latched state when the latching convex part is in the latching space part, and
As for the opening / closing confirmation type opening / closing tool, an uneven tactile sensation part for confirming a closed state when the opening / closing tool is closed is provided on the protrusion for latching of the male opening / closing member, and the uneven tactile feeling part Has a non-recessed non-recessed portion and a recessed portion with a recess that are alternately arranged along the length direction of the male opening and closing member, and is in the upper and lower intermediate region of the latching protrusion, and
The uneven tactile sensation part of the male opening / closing member has a recess for generating a notification sound for notifying the opening state when opening the opening / closing tool or notifying the closing state when closing the opening / closing tool. A synthetic resin packaging bag with an opening / closing tool, wherein the concave portion for generation also serves as the concave portion for the tactile sensation portion. In the synthetic resin packaging bag with an opening / closing tool according to claim 1,
An opening / closing tool made of a synthetic resin and having a horizontally long male opening and closing member and a synthetic resin and a horizontally long female opening and closing member, which are a pair of male and female that can be engaged with each other. A synthetic resin-based packaging bag with an opening / closing tool, wherein the opening / closing confirmation-type opening / closing tool and the opening / closing tool adjacent to and parallel to the opening / closing confirmation type opening / closing tool are provided in a plurality of stages. In the synthetic resin packaging bag with an opening / closing tool according to claim 2,
Two upper and lower opening / closing tools parallel to each other are provided on the bag mouth side in the bag body, the opening / closing tool on the upper side is of the opening / closing confirmation type, and the lower side of the opening / closing tool is on the lower side. A synthetic resin packaging bag with an opening / closing tool, wherein the opening / closing tool is not of the opening / closing confirmation type. In the synthetic resin packaging bag with an opening / closing tool according to any one of claims 1 to 3,
The protrusion for latching in the male opening and closing member of the open / close confirmation type opening / closing member has a vertically asymmetrical side-pointed shape composed of a relatively small upper half portion and a relatively large lower half portion. ,and,
A synthetic resin-based packaging bag with an opening / closing tool, wherein the uneven tactile sensation part and the notification sound generating recess part are formed on the relatively large lower half part side of the latching convex part. In the synthetic resin packaging bag with an opening / closing tool according to any one of claims 1 to 4,
About the latching convex part which the male opening and closing member of the opening / closing confirmation type opening / closing tool has, the concave / convex tactile part and the alarm sound generating concave part in the latching convex part are formed by pressure molding. A synthetic resin packaging bag with an opening and closing tool. In the synthetic resin packaging bag with an opening / closing tool according to any one of claims 1 to 5,
In the formula T = [C × N] / [Q] × [100], Q is the volume of the latching convex portion, C is the volume per concave portion for generating the notification sound, and N is the latching portion. T% is in the range of 15 to 45%, where T is the number of the notification sound generating recesses in the projections, and T is the ratio of all the notification sound generation recesses to the latching projections. Synthetic resin packaging bag with opening and closing features.

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