JP2017105517A - Synthetic resin packaging bag with opening/closing tool, sealing method in synthetic resin packaging bag with opening/closing tool, and treatment jig for opening/closing tool terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin packaging bag with opening/closing tool which can exhibit high airtightness in a state where opening/closing tools are closed, is useful, and is beneficial.SOLUTION: Opening/closing tools 31 and 41 which are provided inside of a bag mouth side of a bag body 11 are closed when male opening/closing members 32 and 42 and female opening/closing members 35 and 45 are engaged with each other. Thereby, the bag mouth of the bag body 11 is closed. In the bag body 11 in the state where the opening/closing tools are closed, fluid flow preventing portions 312L, 312R, 412L and 412R and sealing amplifying portions 315L, 315R, 415L and 415R result in blocking fluid flow on the end of the opening/closing tools 31 and 41 and the peripheral portions thereof, and accordingly the bag body shows high airtightness.SELECTED DRAWING: Figure 2

Description

  One aspect of 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-based packaging bag with an opening / closing device that has been improved to improve the airtightness of the end of the opening / closing device. About. Another aspect of the present invention relates to a sealing method for rationally producing the synthetic resin-based packaging bag having high air-tightness or liquid-tightness. Still another aspect of the present invention relates to a processing jig suitable for highly sealing a terminal portion of an opening / closing tool provided in a synthetic resin packaging bag.

  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.

  On the other hand, a synthetic resin packaging bag with an opening / closing tool also has a peculiar difficulty that occurs during bag making. When both sides of the film are overlapped with the bag front film and the bag back film, which are constituent elements of the bag, and both sides of the film are sealed, both ends of the male opening and closing members and the female opening and closing members Is deformed by the side seal process. In other words, the deformation at the time of side sealing creates micro holes and micro gaps at both ends of the switch and its surroundings, which impairs the airtightness and liquid tightness near the switch ends. It is. (Hereinafter, the poor airtightness and the poor liquid tightness are simply referred to as poor airtightness).

  Many synthetic plastic packaging bags with opening / closing tools have been developed so far. The synthetic resin packaging bags with opening / closing tools disclosed in the following Patent Documents 1 to 5 also correspond to such developed products. Hereinafter, the synthetic resin packaging bag with an opening / closing tool according to the prior art will be examined from the viewpoint of airtightness.

[About Patent Document 1]
<01> In the case of a bag body with an occlusion tool (opening / closing tool) disclosed in Patent Document 1, an adhesive portion is provided on the upper side or the lower side of the end part of the occlusion tool.
<02> The adhesive part provided in the vicinity of the end of the articulating tool in Patent Document 1 is effective in simplifying the closing of the articulating tool or ensuring the closing of the articulating tool. As can be seen, the deformation of the end of the bite that occurs during the side seals degrades the quality of the bag. That is, for this deformation, not only does the fitting of the male and female nails at the end of the bite (mating) not properly occur, but also the poor adhesion between the male and female nails at the end of the bite (gap) Occurrence), that is, it leads to poor airtightness.
[Regarding Patent Document 2]
<03> Patent Document 2 (see FIG. 1) is a bag body having a laminated body (packaging sheet) containing aluminum foil, and is positioned at both ends of an opening / closing tool end (zipper end). By setting the width of the point seal part to be wider than the side seal width (vertical seal part width), it is the content of preventing aluminum foil cracking during bag making.
<04> However, in the case of Patent Document 2, when both sides of both laminated bodies (packaging sheets) for bag front and back that are overlapped with each other are side-sealed, the zipper ends provided on the inner surfaces of both laminated bodies Deformation and deformation at the time of the side seal cause a thing such as a minute hole or a minute gap at both ends of the zipper and its peripheral part, so that the airtightness and liquid tightness near the end of the zipper are impaired.
[Regarding Patent Document 3]
<05> In Patent Document 3, the bag opening / closing tool (chuck) disclosed in FIG. 9 is such that the chuck end is fully processed or a three-side seal is applied to the chuck end. More specifically, the chuck end portion interposed in the side seal region is finished to have a solid shape by crushing by heating and pressurization, and spot seal portions are provided in three directions around the chuck end portion.
<06> The internal space of the chuck end portion of Patent Document 3 has disappeared due to the above-described solid processing. At the chuck end when such a chuck is in a closed state, it seems that fluid leakage is prevented by the fluid passage preventing function of the solid deformation portion. The chuck end portion of Patent Document 3 is also provided with a spot seal portion around the solidly deformed portion of the chuck end portion, so that this also prevents fluid leakage near the chuck end portion. I can see.
<07> However, there is still a point to be improved in the seal structure of Patent Document 3. That is, the fully deformed chuck end portion and the three surrounding spot seal portions are separated via a gap. In the case of such a seal structure, when there is a fine gap at the capillary level due to a sealing failure or the like between the end portion of the fully deformed chuck and the three-way spot seal portion, fluid leaks from here. Therefore, when viewed from the viewpoint of the seal structure in the region including the chuck end portion and its peripheral portion, those described in the document cannot exhibit a seal function that satisfies a high degree of reliability.
[About Patent Document 4]
<08> The technical content disclosed in Patent Document 4 relates to the improvement of a vertical seal bar (side seal bar). That is, in the case of the vertical seal bar found in the same document, by forming a recess in a part of the seal surface, the crushing width of the opening / closing tool end (chuck end) during side sealing is reduced. Therefore, the influence of crushing the chuck end is alleviated accordingly.
<09> However, when used in the vertical seal bar of Patent Document 4, the chuck end portion is not crushed at all, but the end portion of the chuck is crushed with a size of about half the width of the side seal. Such collapse of the chuck end is an inevitable phenomenon when manufacturing a bag with a chuck. That is, when the chuck is provided over the entire inner surface of the bag front film and the bag back film and side seals are applied to both sides of the two films, the chuck ends are crushed.
<10> Therefore, even with the vertical seal bar disclosed in Patent Document 4, the chuck end is crushed. Due to the above-described problems caused by the crushing of the chuck end, the airtightness of the chuck end and its surroundings is impaired.
[Regarding Patent Document 5]
<11> In the case of a bag with a chuck disclosed in Patent Document 5, two parallel chucks are provided inside the bag. While avoiding two chucks, this is applied including a first point seal applied to a plastic film portion adjacent to both chucks and an end portion of both chucks so as to overlap the first point seal. And a second point seal. Regarding the contents of this document technique, further, the first point seal is applied in parallel and close to the chuck end, but the first point seal and the chuck end are separated from each other. In particular, a considerable gap is formed between the root portion of the chuck female claw and the first point seal. The 2nd point seal with respect to this is given so that it may overlap with the 1st point seal, more specifically, it may overlap with the three 1st point seals in an orthogonal state. Thus, an E-shaped point seal is formed at the chuck end.
<12> In Patent Document 5, when the second point seal is applied after the first point seal, the seal pressure at that time greatly acts on the chuck end, so that the chuck end is crushed. That is, the chuck end is greatly deformed, and it is difficult to properly fit the male and female claws at the chuck end. This deformation also causes a gap between the male and female claws at the chuck end. In addition, there is a gap between the root portion of the chuck female claw and the first point seal. As is obvious, the presence of such two gaps reduces the reliability of the airtightness at the chuck end as compared to the case without the two gaps.
<13> In the case of the bag of Patent Document 5, two first point seals that are parallel in the horizontal direction and one second point seal in the vertical direction are on the side seal side on both sides of the bag, and these two point seals are combined. The seal shape is a U-shape. This is because, during the second point seal performed after the first point seal, both ends of the second point seal are accurately positioned so as to intersect the two first point seal inner ends at right angles. Since they must be matched, the latter second point sealing process becomes difficult.

JP-A-53-111876 Japanese Utility Model Publication No. 04-041846 JP 2001-232698 A Japanese Utility Model Publication No. 63-011305 Japanese Patent Application Laid-Open No. 07-246670

  The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to ensure high airtightness and pressure resistance of the bag in a closed state of the opening / closing device, ensuring a healthy opening / closing function, and operability of the opening / closing device. Improvement / strength improvement of the opening / closing tool / Reduction of difficulty in seal processing / Improvement of product yield / Reduction in cost of high-quality products / Synthetic resin packaging bag with opening / closing tool and synthetic resin system with opening / closing tool It is an object of the present invention to provide a rational sealing method for a packaging bag and a processing tool for an opening / closing terminal having a simple configuration.

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 5 as means for solving the problems for achieving the intended purpose. .
<Section 1>
A horizontally long male opening / closing device comprising a packaging bag body and a horizontally long opening / closing tool for opening / closing the bag mouth of the bag body, the opening / closing tool of which is freely engageable with each other. A member and a horizontally long female opening and closing member; and
The opening / closing tool is provided on the inner surface of the bag surface film and the inner surface of the bag back film on both sides of the bag body so as to face each other so as to be able to engage with each other. And
Side seals are applied to both sides of the bag, and
Both ends of the opening / closing tool are engaged with the male opening / closing member and the female opening / closing member in an intersecting state with the side seals on both sides of the bag body, and the side seal interposed portion of the opening / closing tool and the side seal And are integrated,
In a synthetic resin packaging bag with an opening and closing tool on the premise of
The horizontally long opening / closing tool spanning between both side seals of the bag body has a fluid flow blocking portion for blocking the flow of fluid inside and outside the bag at the opening end portion side, and an opening function as the opening / closing tool. Having an open restraint portion that is restrained and an opening and closing function holding portion that holds an opening and closing function as an opening and closing tool; and
Regarding the fluid flow blocking part, the opening restraint part, and the opening / closing function holding part, the fluid flow blocking part is located inside the both side seals continuously to the inner end of the both side seal interposing parts. And the opening restraining portion is located on the inner side of the fluid flow blocking portion continuously with the inner end portions of the fluid flow blocking portions, and the opening / closing function holding portion is further opened. The inner end of the restraint is continuous between the inner ends, and
The upper left upper right corner of the upper left corner, upper right corner, lower left corner, lower right corner formed by the fluid flow blocking portion and the opening restraint portion that are linearly arranged and the side seal that intersects the two linear portions. Part of the bag front film and part of the bag back film are relatively bonded to two or more corners including two corners selected from the left corner and the lower left corner. A seal amplifying part is formed, and the seal amplifying part is continuous without gaps with respect to the three parts of the side seal, the fluid flow blocking part and the opening restraint part, and
With respect to the bag body in the closed state of the opening / closing tool in which the male opening / closing member and the female opening / closing member are engaged with each other, the fluid flow blocking portion and the seal amplifying portion are the end portion of the opening / closing device and the peripheral portion thereof. A synthetic resin packaging bag with an opening and closing device, characterized in that it prevents the fluid flow of the product.
<Section 2>
The synthetic resin packaging with opening and closing device according to claim 1, wherein a reinforced seal portion is formed at a boundary between the fluid flow blocking portion and the seal amplifying portion or at a boundary between the opening restraint portion and the seal amplifying portion. bag.
<Section 3>
The synthetic resin-based packaging bag with an opening / closing tool according to Item 1 or 2, wherein the surface of the fluid circulation blocking part is inclined downwardly toward the side seal side.
<Section 4>
Regarding the surface of the opening restraint portion and the surface of the fluid flow blocking portion, the first step or the second step in which the surface of the opening restraint portion is high and the surface of the fluid flow blocking portion is low is set. A synthetic resin packaging bag with an opening / closing tool according to item 2.
<Section 5>
The synthetic resin system with an opening / closing tool according to any one of claims 1 to 4, wherein the seal amplification part is formed at two corners on the left side of the bag body and two corners on the right side of the bag body, respectively. Packaging bag.

The sealing method for a synthetic resin packaging bag with an opening / closing tool according to the present invention is characterized by the technical contents described in the following items 6 to 9 as means for solving the problems to achieve the intended purpose. Is.
<Section 6>
For the synthetic resin-based packaging bag with an opening / closing tool according to any one of items 1 to 5, the end of the opening / closing tool and the periphery of the end of the opening / closing tool are processed to prevent fluid flow at the processing site. In the sealing method for forming the shape structure of
As a step for forming the opening restraint portion and the fluid flow blocking portion, the male opening / closing member end portion and the female opening / closing member end portion engaged with each other are integrally formed including a fluid non-passing portion having no internal gap. An end sealing step of the opening and closing tool, and
As a step for forming the seal amplification part, a part of the bag front film and a part of the bag back film are relatively bonded to each other at a corner part formed by the side seal and the fluid circulation blocking part. Having a perimeter edge sealing step; and
A side sealing step for bonding both side portions of the two overlapping films is provided as a step for bonding both side portions of the bag front film and both side portions of the bag back film. A sealing method for a synthetic resin packaging bag with an opening / closing tool.
<Section 7>
The end seal step and the end periphery seal step are performed at any time selected from before the side seal step, simultaneously with the side seal step, and after the side seal step. The sealing method in the synthetic resin packaging bag with an opening / closing tool described in the item.
<Section 8>
Item 8. The sealing method for a synthetic resin packaging bag with an opening / closing tool according to Item 6 or 7, wherein the end sealing step and the end periphery sealing step are simultaneously performed.
<Section 9>
The seal in the synthetic resin packaging bag with the opening / closing device according to any one of claims 6 to 8, wherein an end softening step for softening an end portion of the opening / closing device is performed before the end sealing step. Method.

The processing tool for an opening / closing tool terminal according to the present invention is characterized by the technical contents described in the following items 10 to 12 as means for solving the problems for achieving the intended purpose.
<Section 10>
In the processing tool for an open / close terminal used in the sealing method according to any one of Items 6 to 9,
A groove-shaped shaping recess for introducing the male opening / closing member end and the female opening / closing member end in an engaged state of the opening / closing tool to form the opening restraint portion and the fluid flow blocking portion; A flat pressing surface part for forming the seal amplification part, and
The shaping recess and the pressing surface portion are arranged in the same plane, and the pressing surface portion surrounds the shaping recess and is adjacent to the shaping recess without a gap. Terminal processing jig.
<Section 11>
The processing tool for an opening / closing tool terminal according to Item 10, wherein the groove of the shaping recess is gradually shallower toward a side seal on the front end side in the length direction of the shaping recess.
<Section 12>
The processing tool for an opening / closing tool terminal according to Item 10, wherein the groove of the shaping recess is shallowed stepwise as it goes toward the side seal at the longitudinal end of the shaping recess.

The synthetic resin packaging bag according to the present invention, the sealing method for the synthetic resin packaging bag with a switch according to the present invention, and the processing tool for the switch terminal according to the present invention are the following <21> to <36> There is a clear effect in the description of.
[High air tightness of synthetic resin packaging bags]
<21> An opening / closing tool comprising a male opening / closing member and a female opening / closing member that can be engaged with each other is provided over the entire width of the bag inside the opening (bag opening) side of the bag of the present invention. Furthermore, the end portions of the opening / closing tool (male opening / closing member / female opening / closing member) that are engaged with each other are interposed between the side seals on both sides of the bag body. The seal is integrated. Incidentally, the side seal interposition part of the opening / closing tool is completely crushed and integrated with the side seal.
<22> Generally, for the opening / closing tool whose end is crushed at the side seal portion, the original length of the opening / closing tool (equal to the full width of the bag) is Lw, and the length of the opening / closing of the opening / closing tool ( When the Ln is equal to the side seal width and the apparent effective length of the opening / closing tool is L, the effective length L is expressed by the following equation (1).
L = Lw−Ln (1)
<23> On the other hand, with respect to the opening / closing tool, the deformation of the effective end of the opening / closing tool appears as the end is crushed. Therefore, the effective effective length RL of the opening / closing tool is shorter than the apparent effective length L. When the effective length reduction due to the end crushing is Lx, the effective effective length RL of the opening / closing tool is expressed by the following equation (2).
RL = Lw−Ln−Lx = L−Lx (2)
<24> For the above opening / closing device that has deformed the effective end due to the crushing of the end, the end of the male opening / closing member and the end of the female opening / closing member do not bite closely, causing fluid leakage A gap is created. If this is left as it is, the airtightness of the bag is impaired. That is, an airtight failure (liquid tightness failure) occurs such that fluid in the bag leaks out of the bag or outside air outside the bag enters the bag.
<25> As a countermeasure against this, the synthetic resin packaging bag according to the present invention includes a fluid flow blocking portion and a seal amplification portion. Among these, the fluid flow blocking portion is inside the side seal and is continuous with the opening / closing function holding portion end of the opening / closing tool, and therefore prevents the flow of fluid at the opening / closing function holding portion end. On the other hand, the seal amplification part is also inside the side seal and hermetically seals around the fluid flow blocking part. That is, the end of the opening and closing device and its periphery are sealed to a very high degree so that there are no capillary gaps in two different seal configurations of this type. Therefore, in the bag body in the closed state of the opening / closing device in which the male opening / closing member and the female opening / closing member are engaged with each other, fluid leakage does not occur at the edge of the opening / closing device or the surrounding area. It is.
<26> A synthetic resin-based packaging bag according to the present invention, in which a reinforced seal portion is formed at the boundary between the fluid flow blocking portion and the seal amplifying portion, the seal including this reinforced seal portion Since the configuration is three-way, the required sealing performance is more reliably guaranteed.
[Pressure resistance of synthetic resin packaging bags]
<27> In the opening restraint portion on the end side of the opening / closing tool, the end portions of the male and female opening / closing members in the closed state are not opened. That is, in this part, although the shape as both male and female opening / closing members is maintained and the opening / closing function remains, it cannot be opened because the ends of the opening / closing tool are integrated. In the case of a packaging bag provided with an opening / closing tool having such an opening restraint portion, the opening / closing tool is difficult to open by that amount. For example, even if the bag internal pressure increases due to an unexpected situation, this type of internal pressure It is hard to happen that the opening and closing tool is unintentionally opened due to the rise of the height. Therefore, the pressure resistance of the packaging bag in the closed state is high.
[Soundly opening / closing function of opening / closing tool in plastic packaging bag]
<28> In the case of the synthetic resin-based packaging bag according to the present invention, since it includes a fluid flow blocking portion and a seal amplification portion, the effective length of the opening / closing tool is reduced by that amount, and the opening width of the bag body is also reduced. Will decrease.
<29> On the other hand, the opening restraint part, fluid flow blocking part, and seal amplification part are resistance factors when trying to open the opening / closing function holding part end of the opening / closing tool, so it is difficult to open the opening / closing function holding part end To. In other words, this always holds the terminal side of the opening / closing function holding part of the opening / closing tool in the closed state. Furthermore, it is preferable that the opening / closing tool terminal is closed rather than opening the ends of both male and female opening / closing members, which makes it easier to close the opening / closing tool after opening. It also suppresses excessive opening of tools. Therefore, a sound opening / closing function can be secured as a synthetic resin packaging bag with an opening / closing tool.
[Improved operability of opening / closing tool in synthetic resin packaging bags]
<30> In the synthetic resin packaging bag according to the present invention, the opening restraint portion, the fluid flow blocking portion, and the seal amplifying portion are not obstructive factors when opening the opening / closing device, and the opening / closing device after opening Make it easy to close as above. Therefore, in the case of a synthetic resin packaging bag with an opening / closing tool, the operability of the opening / closing tool is improved.
[Improvement of opening / closing strength of synthetic resin packaging bags]
<31> As is well known, in this type of packaging bag, a load is applied to the opening / closing tool when the bag mouth is opened or closed. In particular, an impact load is applied to the end of the opening / closing tool when the opening / closing tool is quickly opened with a large force. When such a situation repeats or continues at a high frequency, this causes fatigue of the switch.
<32> On the other hand, when the opening restraint part, the fluid flow blocking part, and the seal amplification part are connected to and integrated with the end part of the opening / closing tool so as to reinforce the end part of the opening / closing tool like the packaging bag of the present invention, In addition, the strength of the end of the opening / closing tool is remarkably improved. By the way, even when an excessive opening force acts on the opening / closing end of the switch, the opening restraint, fluid flow blocking unit, seal amplification unit, etc. cooperate with the opening / closing of the opening / closing of the opening / closing of the opening / closing of the opening / closing. Therefore, it is difficult for the situation that the end of the opening / closing tool is damaged to occur.
[Cost reduction of synthetic resin packaging bags (high quality products)]
<33> In the case of the synthetic resin packaging bag according to the present invention, the bag is of high quality in terms of high airtightness of the bag, sound opening and closing function of the opening and closing device, improvement of operability of the opening and closing device, and improvement of strength of the opening and closing device. I can say that. In the case of the synthetic resin packaging bag, since this high quality is ensured without newly spending a special component material, the cost reduction of the high quality product is satisfied. Moreover, since the product yield is improved as described below, this point also contributes to cost reduction.
[Reduction of processing difficulty of synthetic resin packaging bags and improvement of product yield]
<34> The synthetic resin-based packaging bag according to the present invention is a conventional technology that is technically ripe as long as it does not include the opening and closing end configuration such as the opening restraint portion, the fluid flow blocking portion, and the seal amplification portion. It can be produced by substantially the same means. Therefore, there is no particular difficulty in processing in this respect. On the other hand, although the opening restraint part, the fluid flow blocking part, and the seal amplification part also require a processing jig, for example, by using heat treatment and pressure treatment together in the line production method, It can be produced stably. Therefore, the difficulty of processing at the time of producing a synthetic resin packaging bag is alleviated and the product yield can be improved.
[Rational rationality of the sealing method]
<35> The sealing method of the present invention is mainly implemented by an end seal process, an end periphery seal process, and a side seal process of an opening / closing tool. This can be done in a process with very few opening / closing tool edge treatments and edge edge periphery treatments for enhancing airtightness. Furthermore, since it is an existing process such as a side seal process, the number of substantial main processes for improving airtightness is only two processes, an end seal process and an end periphery seal process. Furthermore, these two steps can be performed simultaneously with a single jig. Therefore, according to the sealing method of the present invention, the required sealing process can be carried out very reasonably when the airtightness of the synthetic resin packaging bag with an opening / closing tool is to be achieved.
[Concise configuration of processing tool for switchgear terminal]
<36> The switchgear terminal processing jig according to the present invention includes a groove-shaped shaping concave portion for forming an open restraint portion and a fluid flow blocking portion and a flat pressing surface portion for forming a seal amplification portion. The main structure, that is, a simple structure in which both the parts are arranged in the same plane adjacent to each other without a gap. In addition, when the processing tool for the opening / closing tool terminal is used, it is only necessary to apply this to the predetermined portion of the bag body components (overlapping bag front film and bag back film) and seal the required fluid flow blocking portion and seal. The amplifying part can be formed stably. Therefore, in the case of the processing tool for an opening / closing tool terminal according to the present invention, it is useful and beneficial in carrying out the sealing method of the present invention.

It is the front view which showed one Embodiment of the synthetic resin packaging bag which concerns on this invention. FIG. 3 is an enlarged front view of a main part of the synthetic resin packaging bag illustrated in FIG. 1. FIG. 3 is a cross-sectional view of each main part of the synthetic resin packaging bag illustrated in FIG. 1. 3 (I) is a cross-sectional view taken along line II in FIG. 2, FIG. 3 (II) is a cross-sectional view taken along line II-II in FIG. 2, and FIG. 3 (III) is a cross-sectional view taken along line III in FIG. FIG. 3 (IV) is a cross-sectional view taken along line IV-IV in FIG. 2, and FIG. 3 (V) is a cross-sectional view taken along line II in FIG. 2 in another embodiment. . It is the front view which showed other embodiment of the synthetic resin type packaging bag which concerns on this invention. FIG. 5 is an enlarged front view of a main part of the synthetic resin packaging bag illustrated in FIG. 4. It is each principal part sectional drawing of the synthetic resin type packaging bag illustrated by FIG. 6 (I) is a cross-sectional view taken along line II in FIG. 4, FIG. 6 (II) is a cross-sectional view taken along line II-II in FIG. 4, and FIG. 6 (III) is taken along line III in FIG. FIG. 6 (IV) is a cross-sectional view taken along line IV-IV in FIG. 4. It is explanatory drawing which illustrated various embodiment about the processing tool for switchgear terminals which concerns on this invention. Among these, FIG. 7 (I) is a view of an example of the processing jig viewed from the pressing surface side, FIG. 7 (II) is a left side view of FIG. 7 (I), and FIG. ) Of FIG. 7 (IV) is a plan view of FIG. 7 (I), FIG. 7 (V) is a cross-sectional view of FIG. FIG. 7 (VII) is a left side view of FIG. 7 (VI), and FIG. 7 (VIII) is a view of VIII-VIII of FIG. FIG. 7 (IX) is a plan view of FIG. (VI), FIG. 7 (X) is a sectional view taken along line XX of FIG. (VI), and FIG. 7 (XII) is the same view. A sectional view taken along line III-III in (XI), and FIG. 7 (XIII) is a view of another example of the processing jig as seen from the pressing surface side. It is explanatory drawing which illustrated various embodiment of the side seal bar with a processing jig in the present invention. Of these, FIG. 8 (I) is a front view of a main part showing a first example of a side seal bar with a processing jig, and FIG. 8 (II) is a main part showing a second example of the side seal bar with a processing jig. FIG. 8 (III) is a front view of a main part showing a third example of a side seal bar with a processing jig, and FIG. 8 (IV) is a main part showing a fourth example of the side seal bar with a processing jig. FIG. FIG. 4 is a perspective view schematically showing several kinds of reinforced sealing jigs and a perspective view schematically showing a side seal bar in the present invention. Of these, FIGS. 9 (I), (II), and (III) relate to each reinforced sealing jig, and FIG. 9 (IV) relates to the side seal bar. The outline of a row bag-making method and a column bag-making method is briefly shown about the manufacturing method of a bag. In the case of FIG. 10, (I) is an explanatory diagram of the row bag making method, and (II) is an explanatory diagram of the column bag making method. It is explanatory drawing which showed schematically one Embodiment of the sealing method which concerns on this invention. It is explanatory drawing which showed schematically other embodiment of the sealing method which concerns on this 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. Alternatively, there is also 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. 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, for example, it is composed of 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.) A synthetic resin made of a new nanotechnological material mixed with and adhering to the film can also be used, and depending on the contents, they can be combined with both the films 12 and 13.

  In the synthetic resin packaging bag according to the present invention, opening / closing tools 31 and 41 for opening and closing the bag mouth are provided inside the bag body 11 on the bag mouth side. More specifically, the opening / closing tool 31 is composed of a horizontally long male opening / closing member 32 and a horizontally long female opening / closing member 35, and the opening / closing tool 41 is also a horizontally long male opening / closing member that can freely bite each other. The member 42 and a horizontally long female opening / closing member 45 are included. Furthermore, in one example, the opening / closing tools 31 and 41 are integrally formed on the inner surfaces of the front and back films 12 and 13. In another example, the opening / closing tools 31 and 41 are tape-like bonded to the inner surfaces of the front and back films 12 and 13 by heat sealing means or the like.

  As described above, the opening / closing tools 31 and 41 are called chucks, fasteners, zippers, and the like, and are also called occlusal tools. The synthetic resin, which is the material of the opening / closing tool 31/41, is made of the same material or the same material as the two films 12, 13 when it is integrally formed on the inner surfaces of the front and back films 12, 13. . In addition, the opening / closing tool 31/41 bonded to the inner surfaces of the front and back films 12, 13 may be 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, a synthetic resin packaging bag with an opening / closing tool according to the present invention will be described with respect to one embodiment illustrated in FIGS.

  In the synthetic resin packaging bag according to the present invention, in FIG. 1 to FIG. 3 where one embodiment is shown, the bag body 11 is such that the bag surface film 12 and the bag back film 13 are overlapped with each other, And the predetermined peripheral part of the said both films 12 * 13 is sealed, and makes 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. However, in the case of the bag body 11 of FIGS. 1 to 3, since the bag mouth at the top of the bag body is in an unsealed state, the top seal 16 is indicated by a virtual line (two-dot chain line). Two typical examples of bagging and sealing a packaged object in the bag body 11 of this embodiment are as follows. As an example, in the case of a type in which the bottom side (lower side) of the bag body 11 is the filling port of the package object, both side seals 14 and 15, the top seal 16, Is already formed, the bottom seal 17 is applied to the lower side of the bag 11 after filling the package. As another example, when the bag mouth side (upper portion) of the bag body 11 is used as a filling port of the packaged object, both side seals 14 and 15 and a bottom seal 17 are provided on the bag body 11 in a state before packaging. Since it has already been formed, a top seal 16 is applied to the lower side of the bag 11 after filling the package. As an example other than this, when the bag body 11 is left in an empty state and an article to be packaged is appropriately put into the bag body 11, both side seals 14 and 15 and a bottom seal 17 are applied to the bag body 11. However, the top seal 16 is not applied to the mouth side (upper side) of the bag body 11. Such explanatory matters are common to all the embodiments.

  As is apparent with reference to FIGS. 1 to 3, the two horizontally long opening / closing tools 31 and 41 in the bag body 11 of this embodiment are provided inside the bag body 11 as follows. That is, both the opening / closing tools 31 and 41 over the both sides of the bag body 11 at the bag mouth side portion in the bag body 11 have the male opening and closing members 32 and 42 and the female opening and closing members 35 and 45 of the bag surface film 12. The inner surface and the inner surface of the bag back film 13 are provided in two upper and lower stages. Thus, the male and female both opening and closing members 32 and 35 provided in the bag 11 and the other male and female both opening and closing members 42 and 45 face each other so that they can be engaged with each other. In this case, the side seal interposing portions 311L, 311R, 411L, and 411R at both ends of the opening / closing tools 31 and 41 are crushed, for example, at the time of side sealing at both ends of the bag body by heat sealing means. -Integrated with 15. Furthermore, the respective side seal interposing portions 311L, 411L, 311R, and 411R are inclined downwardly toward the outer edges of the side seals 14 and 15. In particular, the edge region Ed of each of the side seal interposing portions 311L, 411L, 311R, and 411R is extremely thin as shown in FIG. Unusual unity.

  In the bag body 11 shown in FIGS. 1 to 3, both the opening / closing tools 31 and 41 extending between the side seals 14 and 15 include the fluid flow blocking portions 312L, 312R, and 412L in addition to the side seal interposing portions 311L, 311R, 411L, and 411R. -It also has 412R, opening restraint part 313L * 313R * 413L * 413R, and opening / closing function holding | maintenance part 314 * 414. These are as described below.

  Each of the fluid flow blocking portions 312L, 312R, 412L, and 412R blocks the flow of fluid over the inside and outside of the bag body 11 at the opening / closing tool end portion side. As a typical example, each of the fluid flow blocking portions 312L, 312R, 412L, and 412R has a block shape formed by shaping (molding) the ends of both the opening / closing tools 31 and 41 in a softened state or a molten state. Is. As illustrated in FIG. 3 (II), this does not correspond to a shape structure that penetrates the inside such as a through hole, a through gap, or a through space. Therefore, this can be said to be a fluid-impervious structure at both ends of the opening / closing tool. Therefore, the fluid or the like flowing to each of the fluid flow blocking portions 312L, 312R, 412L, and 412R does not flow through the portions 312L, 312R, 412L, and 412R. Each of the fluid flow blocking portions 312L, 312R, 412L, and 412R has side seal interposed portions 311L, 311R, 411L, and 411R in relation to the side seals 14 and 15 and the side seal interposed portions 311L, 311R, 411L, and 411R. It is located inside the both side seals 14 and 15 continuously from the inner end of 411R.

  Each of the opening restraining portions 313L, 313R, 413L, and 413R is a portion that is restrained from being opened on the end side of both the opening and closing tools 31 and 41. About this part, the male and female both opening and closing members 32, 35, 42 and 45 in the closed state (biting state) cannot be opened. This is because the end portions of the opening / closing tools 31 and 41 and / or their peripheral portions are bonded (welded) as shown in FIG. In the case of such an adhesive structure, it is obvious that the male and female open / close members 32, 35, 42 and 45 in the closed state cannot be disengaged. Each of the opening restraint portions 313L, 313R, 413L, and 413R is also formed by shaping (molding) the end portions of both the opening / closing tools 31 and 41 in a softened state or a molten state. Incidentally, it can be said that these portions are often formed simultaneously with the fluid flow blocking portions 312L, 312R, 412L, and 412R. Further, the open restraining portions 313L, 313R, 413L, and 413R are respectively located inside the respective portions 312L, 312R, 412L, and 412R continuously to the inner ends of the fluid flow blocking portions 312L, 312R, 412L, and 412R. Yes.

  The open / close function holding portions 314 and 414 in both the open / close tools 31 and 41 are portions that hold an open / close function as an open / close tool as illustrated in FIG. This is because the side seal interposing portions 311L, 411L, 311R, 411R and the fluid flow blocking portions 312L, 312R, 412L, 412R have lost the initial opening / closing function, whereas the opening / closing function holding portions 314, 414 It has an opening / closing function for biting both the open / close members 32, 35, 42, and 45 and for removing the bite. As shown in FIG. 1, for example, each opening / closing function holding unit 314 414 has other parts 311 L, 411 L, 311 R, 411 R, 312 L, 312 R, 412 L, 412 R, 313 L, 313 R, 413 L, 413 L, as shown in FIG. The intermediate part excluding 413R corresponds to this.

  The side seal interposing portions 311L, 311R, 411L, and 411R, the fluid flow blocking portions 312L, 312R, 412L, and 412R, the opening restraining portions 313L, 313R, 413L, and 413R, the opening / closing function holding portions 314 and 414, etc. are shown in FIG. The dimension in the direction (left and right direction) is referred to as the length, and the side seals 14 and 15 described above are referred to as the width in the horizontal direction (left and right direction) in FIG. In this case, when the length and width of each part are indicated by symbols, the length of each side seal interposition part is [311L = 411L = 311R = 411R], and the length of each fluid flow blocking part is [312L = 312R = 412L = 412R], the width of each side seal is [14 = 15]. Further, the width of each side seal and the length of each side seal intervening portion have an equality relationship of [14 = 15 = 311L = 411L = 311R = 411R].

When the dimensional relationship of each part of the bag body is as described above, the width of the side seal 15 is set to H1 in FIG. 3, and the total length of the [fluid flow blocking portion 312R + opening restraint portion 313R] is set to FIG. When H2 is set and the total length of [H1 + H2] is H3 in FIG. 3, it is desirable to set H3 within the range of the following expression (3) in relation to H1.
[3.0 × H1] ≧ [H3] ≧ [1.5 × H1] (3)

  The reason why H3 is set within the range of the above expression (3) is as follows. First, when H3 is set to less than [1.5 × H1], it becomes difficult to form two parts of the fluid flow blocking portion 312R and the open restraint portion 313R in this short region, and in particular, the fluid flow When the blocking portion 312R is pressed and crushed under heating, a crack or scratch called “thermal crack” is likely to occur in this small region. On the other hand, when H3 is set to exceed [3.0 × H1], this causes a manufacturing inconvenience that a large jig and a large heating means are required, and the processing portion becomes excessively large and difficult to process. Also increases. The H3 is more preferably around [2.0 × H1].

  The bag body 11 illustrated in FIGS. 1 to 3 further includes both side seals 14 and 15, fluid flow blocking portions 312 L, 312 R, 412 L, and 412 R, and open restraint portions 313 L, 313 R, 413 L, and 413 R. Seal amplification portions 315L, 315R, 415L, and 415R are formed at four corners formed. For example, the seal amplification portions 315L, 315R, 415L, and 415R are formed by relatively bonding a part of the bag front film 12 and a part of the bag back film 13 by heat sealing means. The

  What is important about each of the seal amplifying sections 315L, 315R, 415L, and 415R is that the seal amplifying sections 315L, 315R, 415L, and 415R are continuous without gaps with respect to the three portions of the side seal, the fluid flow blocking section, and the opening restraint section. Accordingly, the seal amplification units 315L, 315R, 415L, and 415R have the following modes. In the case of the seal amplifying part 315L, the fluid flow blocking part 312L and the upper edge of the opening restraint part 313L and the inner edge of the side seal 14 are continuous without a gap. In the case of the seal amplifying part 315R, the upper edge of the fluid flow blocking part 312R and the opening restraint part 313R and the inner edge of the side seal 15 are continuous without a gap. In the case of the seal amplifying part 415L, the fluid flow preventing part 412L and the lower edge of the opening restraint part 413L and the inner edge of the side seal 14 are continuous with no gap. Further, in the case of the seal amplifying unit 415R, the fluid flow blocking unit 412R and the lower edge of the opening restraint unit 413R and the inner edge of the side seal 15 are continuous without a gap.

  Each of the seal amplification sections 315L, 315R, 415L, and 415R has a polygonal shape as seen from the front and back of the bag as is apparent from FIGS. More specifically, the seal amplifying units 315L and 315R are square (rectangular), and in the case of the seal amplifying units 415L and 415R, they are pentagons (downwardly sharp pentagons having inclined sides). However, this exemplary shape is only an example. Therefore, each of the seal amplification sections 315L, 315R, 415L, and 415R has an arc shape, a combination shape of an arc shape and a polygon, or the like, as long as it satisfies the condition that it is continuous with a predetermined three portions without any gap. It may be an irregular shape. Therefore, the inner edges of the respective seal amplifying units 315L, 315R, 415L, and 415R may have only a linear shape or a curved shape, or may have a shape in which a straight line and a curve are mixed.

  Each of the seal amplifying units 315L, 315R, 415L, and 415R described above only needs to include two or more of them. As two cases in this case, referring to FIG. 1, the seal amplification units 315L and 315R at the upper left and upper right corners are included, or the seal amplification units 315L and 415R at the lower left and lower right corners are included. It takes a thing.

  The surface of each of the fluid flow blocking portions 312L, 312R, 412L, and 412R described above refers to a surface that can be seen from the front surface (FIG. 1) and the back surface of the bag body 11. That is, the upper surface side and the lower surface side in FIG. 3 (I) are referred to as the surfaces of the fluid flow blocking portions 312L, 312R, 412L, and 412R. The surfaces of the fluid flow blocking portions 312L, 312R, 412L, and 412R are inclined downwardly toward the side seals 14 and 15 as is apparent with reference to FIG. More specifically, the surfaces of the fluid flow blocking portions 312L, 312R, 412L, and 412R are connected to the side seals 14 and 15 while being connected to the surfaces of the side seal interposed portions 311L, 311R, 411L, and 411R at the same gradient. It is sloping downhill. On the other hand, the surface of each opening restraint part 313L * 313R * 413L * 413R is not attached | subjected the gradient like each fluid flow prevention part 312L * 312R * 412L * 412R.

  As an aspect different from that of FIG. 3I, there is an example as shown in FIG. In the example of FIG. 3 (V), the open restraint portions 313L, 313R, 413L, 413R and the surfaces of the fluid flow blocking portions 312L, 312R, 412L, and 412R are respectively open restraint portions 313L, 313R, 413L, and 413R. The relative step S is set such that the surface of the fluid flow blocking portions 312L, 312R, 412L, and 412R is low. In addition, in the example of FIG. 3 (V), the above-mentioned gradient is given to the surface of each side seal interposition part 311L * 311R * 411L * 411R.

  The bag 11 illustrated in FIGS. 1 to 3 also includes boundaries between the fluid flow blocking portions 312L, 312R, 412L, and 412R and the seal amplifying portions 315L, 315R, 415L, and 415R, and open restriction portions. Reinforced seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR are formed at boundaries between 313L, 313R, 413L, and 413R and seal amplification portions 315L, 315R, 415L, and 415R. Each of the reinforcing seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR is formed by pressurizing each boundary portion heated to an appropriate temperature with a pressurizing jig. Each of the reinforced seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR formed in this way becomes an extremely dense film layer, and there are no microscopic voids or microscopic voids even in microscopic observation. Highly functional as a layer to prevent Therefore, in the case of the bag body 11 having the reinforcing seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR on the end portions of both the opening and closing tools 31 and 41, the desired airtightness is further increased. Become.

  About the reinforced seal | sticker part 51UL * 51CL * 51DL * 51UR * 51CR * 51DR mentioned above, it is good to set it as two or more. In this case, the term “two or more” refers to any one or more selected from the left reinforcing seal portions 51UL, 51CL, and 51DL, and any one selected from the right reinforcing seal portions 51UR, 51CR, and 51DR. That's it.

  The bag illustrated in FIG. 1 to FIG. 3 as the packaging bag according to the present invention includes a bag body 11 having two opening / closing tools 31 and 41, each of which has an end portion of both opening / closing tools 31 and 41 and the periphery of the end portion. The fluid flow blocking portions 312L, 312R, 412L, and 412R and the seal amplification portions 315L, 315R, 415L, and 415R are mainly sealed tightly. Therefore, in the case of the bag body 11 when both the opening / closing tools 31 and 41 are closed, the situation in which the fluid in the bag leaks out of the bag from the vicinity of the ends of the both opening / closing tools 31 and 41, or the fluid outside the bag. However, it does not occur to the extent that it enters into the bag from the vicinity of the end portions of both the opening / closing tools 31 and 41, and it exhibits a high sealing effect as a packaging bag that requires airtightness. Of course, when the bag body 11 described above is also provided with the reinforced seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR at a predetermined portion on the opening / closing tool end portion side, the required sealing effect becomes higher.

  Below, the thing of embodiment illustrated by FIGS. 4-6 is demonstrated below about the synthetic resin type packaging bag concerning this invention.

  In the case of the synthetic resin packaging bags illustrated in FIGS. 4 to 6, only one horizontally long opening / closing tool is provided inside the bag body 11 on the bag mouth side. In other words, the opening / closing tool 31 over the both sides of the bag body 11 at the bag mouth side portion in the bag body 11 includes the male opening / closing member 32 and the female opening / closing member 35, and the inner surface of the bag front film 12 and the bag back film 13. It is provided on the inner surface. In this way, the opening / closing tool 31 provided in the bag body 11 is hermetically sealed at the opening and closing ends of the opening / closing tool in the same manner as in the previous example. Accordingly, the synthetic resin-based packaging bags illustrated in FIGS. 4 to 6 (the bag body 11 with the opening / closing tool 31) also include the side seal interposing portions 311L and 311R, the fluid flow blocking portions 312L and 312R, and the opening restraining portions 313L and 313R. The seal amplifying sections 315L, 315R, 415L, and 415R and the reinforced seal sections 51UL, 51DL, 51UR, and 51DR are provided.

  The surfaces of the opening restraint portions 313L and 313R of the bag body 11 illustrated in FIGS. 4 to 6 and the surfaces of the fluid flow blocking portions 312L and 312R are also high, and the surfaces of the open restraint portions 313L and 313R are high. There is an example in which a step is set such that the surfaces of the blocking portions 312L and 312R are lowered. That is, also in the bag body 11 of FIGS. 4-6, the level | step difference S mentioned above may be provided in the aspect as described in FIG.3 (V).

  The packaging bags illustrated in FIGS. 4 to 6 are substantially the same as the previous examples of FIGS. 1 to 3 except that only one opening / closing tool is provided. Therefore, although description can be employ | adopted altogether by the packaging bag illustrated by FIGS. 4-6, about those matters, it abbreviate | omits by referring the description matter regarding a previous example (FIGS. 1-3).

    Also in the case of the packaging bags illustrated in FIGS. 4 to 6, the fluid flow blocking portions 312L and 312R, the opening restraint portions 313L and 313R, the seal amplification portions 315L, 315R, 415L, and 415R, and the reinforced seal portions 51UL, 51DL, and 51UR -It has 51DR. Accordingly, the bag body 11 of FIGS. 4 to 6 when the opening / closing tool 31 is in the closed state hardly leaks out of the bag fluid or enters the bag of the bag fluid, as in the previous example. As a packaging bag that requires high performance, it exhibits a high level of sealing effect.

  In the packaging bags described in the above embodiments, as shown in FIGS. 1, 2, 4, and 5, there are dense side seals 14 </ b> S and 15 </ b> S in part of both side seals 14 and 15, respectively. To do. The dense side seals 14S and 15S are formed by performing a plurality of times (eg, 2-3 times) of side seal treatment by heating and pressurization, and the resin layer of the portion is dense and tough. Since it is finished, it has a higher airtight seal as a seal structure close to the end of the opening / closing tool.

  Next, an embodiment of the processing tool for an opening / closing tool terminal according to the present invention will be described below with respect to the embodiment illustrated in FIGS.

  The processing jig 61 illustrated in FIG. 7 is for processing the ends of the opening / closing tools 31 and 41 in the bag body 11 and the periphery thereof, and the processing jig 61 includes the ends of the opening / closing tools 31 and 41 and the ends thereof. This is to enhance the peripheral sealing performance.

  The processing jig 61 illustrated in FIGS. 7 (I) to (V), the processing jig 61 illustrated in FIGS. 7 (VI) to (X), and the processing illustrated in FIGS. 7 (XI) to (XII). The jig 61 and the processing jig 61 illustrated in FIG. 7 (XIII) are each made of a metal having good heat resistance and thermal conductivity, for example, an alloy such as brass.

  Among these, the processing jig 61 of FIGS. 7I to 7V is configured mainly with a block-shaped base 62. The base 62 has a pressing surface portion 66 described later, and a pair of side surfaces of the four side surfaces around the pressing surface portion 66 are inclined toward the pressing surface portion 66 from the middle portion. . A flange 63 is provided on the other pair of side surfaces of the base 62, and the flange 63 has a groove-like or hole-like attachment portion 64 for latching a bolt, nut, or other attachment member. Is formed.

  In the processing jig 61 shown in FIGS. 7I to 7V, the base 62 includes a groove-shaped shaping recess 65 and a flat pressing surface 66 on its main surface. That is, the shaping concave portion 65 and the pressing surface portion 66 are disposed in the same plane of the base body 62. Moreover, in the case of the pressing surface portion 66, it surrounds the shaping recess 65 and is adjacent to the shaping recess 65 without a gap. Here, the shaping recess 65 is for forming the fluid flow blocking portions 312L, 312R, 412L, 412R and the open restraining portions 313L, 313R, 413L, 413R. The shaping recess 65 further includes a pre-formed portion for primarily forming a part of each of the side seal interposed portions 311L, 311R, 411L, and 411R. Therefore, the shaping recessed part 65 has a recessed part shape matched with the fluid flow blocking part, the open restraint part, its attached part, and the like. Of the shaping recess 65, the portions for forming the fluid flow blocking portions 312L, 312R, 412L, and 412R having the gradient shown in FIG. 3 (I) have a shape corresponding to the gradient. . On the other hand, the pressing surface portion 66 is for forming the above-described seal amplification portions 315L, 315R, 415L, and 415R. Therefore, the pressing surface portion 66 has a flat surface for forming the seal amplifying portion, which includes areas for forming the dense side seals 14S and 15S, as will be described later. The processing jig 61 in FIGS. 7I to 7V also has one fluid flow blocking portion 312L / 412L and both opening restraint portions 313L / 413L and other adjacent ones during bag making. Since both the fluid flow blocking portions 312R and 412R and the both open restraining portions 313R and 413R are formed at the same time, this is also the case. This will be described below.

  When the processing jig 61 of FIGS. 7 (I) to (V) is viewed with the central vertical line of FIG. 7 (I) as the axis of symmetry, it can be said that it has a symmetrical structure. The base 62 of the processing jig 61 is provided with the above-described shaping recess 65 and four pressing surface portions 66 on a common heating and pressing molding surface. Among them, the four shaping recesses 65 occupy relative positions on the shaping recess 65 in FIG. Further, the two upper and lower shaping recesses 65 on the left side of FIG. 7 (I) are parallel to each other in the same direction, and the two upper and lower shaping recesses 65 on the right side of FIG. 7 (I) are also parallel to each other in the same direction. However, in the relationship between the two shaping recesses 65 on the left side and the two shaping recesses 65 on the right side, these directions are opposite to each other.

In the case of the shaping recess 65 in the processing jig 61 of FIGS. 7 (I) to (V), it can be regarded as one in terms of the shape structure, but this includes a plurality of recess zones Z1 to Z6 as follows. is there. These recessed zones Z1 to Z6 correspond to the following portions at the ends of both the opening / closing tools 31 and 41. In the case of FIG. 7 (I), since there is little space for codes, the lower two shaping recesses 65 are not labeled with codes Z1 to Z6. The symbols Z1 to Z6 omitted in the lower two shaping recesses 65 refer to the symbols Z1 to Z6 attached to the upper two shaping recesses 65.
Recessed zone Z1 → open restraint portion 313L (open restraint portion 413L)
Recessed zone Z2 → fluid flow blocking unit 312L (fluid flow blocking unit 412R)
Recessed zone Z3 → A part of side seal interposed portion 311L (side seal interposed portion 411L) Recessed zone Z4 → Open restraint portion 313R (open restraint portion 413R)
Recessed zone Z5 → fluid flow blocking unit 312R (fluid flow blocking unit 412R)
Recessed zone Z6 → Side seal interposition part 311R (side seal interposition part 411L) part

As is clear from FIG. 7I, the pressing surface portion 66 of the processing jig 61 is also a single surface, and this includes a plurality of pressing areas Ar1 to Ar6 as described below.
Pressing area Ar1 → seal amplifier 315L
Pressing area Ar2 → seal amplifier 415L
Press area Ar3 → Seal amplification section 315R
Pressing area Ar4 → seal amplifier 415R
Press area Ar5 → Dense side seal 14S
Press area Ar6 → Dense side seal 15S

  In the example of FIGS. 7 (I) to (V), the shape of each of the seal amplification units 315L, 315R, 415L, and 415R is a polygon, an arc, or a combination of an arc and a polygon as described above. Since there are various shapes such as other irregular shapes, the shape of the pressing surface portion 66 in the processing jig 61 of FIGS. 7 (I) to (V) is not shown in the example corresponding to the shape of such a seal amplification portion. Various shapes are employed.

  In the case of the processing jig 61 illustrated in FIGS. 7 (VI) to (X), the base 62 has the pressing surface portion 66 but does not have the shaping recess 65. Furthermore, in the case of the processing jig 61 according to this embodiment, is the other configuration substantially the same as that of the processing jig 61 of FIGS. Or it is equivalent to it. Therefore, the description of other components in the processing jig 61 of FIGS. 7 (VI) to (X) will be omitted by referring to the corresponding items of the processing jig 61 of FIGS. 7 (I) to (V).

  In the case of the processing jig 61 illustrated in FIGS. 7 (XI) to (XII), the configuration of the shaping recess 65 formed in the base 62 is different from that in the processing jig 61 of FIGS. 7 (I) to (V). However, the other configuration is substantially the same as or equivalent to that of the processing jig 61 of the processing jig 61 of FIGS. Therefore, the description of other components in the processing jig 61 of FIGS. 7 (XI) to (XII) will be omitted by referring to the corresponding items of the processing jig 61 of FIGS. 7 (I) to (V).

  In the case of the processing jig 61 illustrated in FIG. 7 (XIII), the processing jig 61 shown in FIGS. 7 (I) to (V) is obtained by reducing the shaping concave portions 65 one by one on the left and right sides, that is, two shapings in total. The recess 65 is reduced. In the embodiment of FIGS. 7 (XI) to (XII), there is an example in which the two shaping recesses 65 are reduced in the same manner. In the case of the processing jig 61 according to the embodiment of FIG. 7 (XIII), other configurations are substantially the same as those of the processing jig 61 of the processing jig 61 of FIGS. Or it is equivalent to it. Therefore, description of other components in the processing jig 61 of FIG. 7 (XIII) will be omitted by referring to the corresponding items of the processing jig 61 of FIGS.

  As a modification of each processing jig 61 illustrated in FIG. 7, only the left half or the right half with respect to the central vertical line in FIG. 7 (I), or the central vertical line in FIG. 7 (VI). In addition to the left half or right half as a reference, the left half or right half as a reference with respect to the center vertical line in Fig. 7 (XI) or the center vertical line in Fig. 7 (XIII) as a reference. Some are only left or right half.

  Each processing jig 61 illustrated in FIG. 7 is installed and used at a predetermined position on a bag making line (manufacturing line). Moreover, it can be used as a pair of upper and lower. One of them is mounted on the upper surface of the lower mechanism (with a heat source) installed at a fixed position on the bag making line, and the other one is arranged corresponding to the upper surface of the lower mechanism. It is mounted on the lower surface of the upper mechanism (with heat source) that can move up and down. The two upper and lower processing jigs 61 mounted in this manner have their pressing surface portions 66 facing each other.

  In the case of the above-mentioned two processing jigs 61 mounted on the bag making line and facing up and down, for example, the processing jig 61 is heated at a temperature of about 160 ° C., and the upper processing jig 61 is the lower processing jig 61. It moves vertically up and down intermittently. On the other hand, both the front and back bags 12 and 13 pass between the upper and lower processing jigs 61 while being overlapped with each other (opening / closing tool closed state). Therefore, both the films 12 and 13 with the opening and closing tools 31 and 41 or the both films 12 and 13 with the opening and closing tools 31 are sandwiched between the lower processing jig 61 that descends and the lower processing jig 61 at a fixed position. Thus, the opening / closing tool terminal side is sealed.

The two processing jigs 61 are combined as follows.
[First combination]
Upper processing jig 61 → the one illustrated in FIGS. 7 (I) to (V) Lower processing jig 61 → the one illustrated in FIGS. 7 (I) to (V) [Second Combination]
The upper processing jig 61 → the one illustrated in FIGS. 7 (I) to (V) The lower processing jig 61 → the one illustrated in FIGS. 7 (VI) to (X) [Third combination]
The upper processing jig 61 → the one illustrated in FIGS. 7 (VI) to (X) The lower processing jig 61 → the one illustrated in FIGS. 7 (I) to (V) [fourth combination]
Upper processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) Lower processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) [Fifth combination]
Upper processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) Lower processing jig 61 → the one illustrated in FIGS. 7 (VI) to (X) [Sixth Combination]
The upper processing jig 61 → the one illustrated in FIGS. 7 (VI) to (X) The lower processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) [Seventh Combination]
Upper processing jig 61 → the one illustrated in FIG. 7 (XIII) Lower processing jig 61 → the one illustrated in FIG. 7 (XIII) [Eighth combination]
The upper processing jig 61 → the one illustrated in FIG. 7 (XIII) The lower processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) [9th combination]
The upper processing jig 61 → the one illustrated in FIGS. 7 (XI) to (XII) The lower processing jig 61 → the one illustrated in FIG. 7 (XIII)

  The various processing jigs 61 described above may be integrated with the side seal bar 71. For the side seal bar 71 with the processing jig 61 in such a case, the opening / closing terminal portion can be processed as described above in synchronization with the side seal at the time of bag making. FIG. 8 illustrates various side seal bars 71 with the processing jig 61.

  The side seal bar 71 with each processing jig 61 is as follows. In FIG. 8I, the processing jig 61 exemplified in FIGS. 7I to 7V is provided at one end of the side seal bar 71, and both are integrated. In FIG. 8 (II), the processing jig 61 illustrated in FIGS. 7 (VI) to (X) is provided at one end of the side seal bar 71, and both are integrated. In FIG. 8 (III), the processing jig 61 illustrated in FIGS. 7 (XI) to (XII) is provided at one end of the side seal bar 71, and both are integrated. In FIG. 8 (IV), the processing jig 61 illustrated in FIG. 7 (XIII) is provided at one end of the side seal bar 71 so that both are integrated.

  The side seal bar 71 with the processing jig 61 illustrated in FIGS. 8I to 8V is also used as a pair of upper and lower sides. The side seal bar 71 with two processing jigs 61 to be combined in that case is selected based on the shape structure of the processing jig 61. More specifically, similar to the combination examples of the processing jigs 61 illustrated in FIGS. 7I to 7X, the first to ninth combinations described in the above paragraph 0062 are performed.

  In the bag body 11 described above, the reinforcing seal jig 81 for forming the reinforcing seal portions 51UL, 51CL, 51DL, 51UR, 51CR, and 51DR at the predetermined portion is as follows with reference to FIG. .

  The reinforced sealing jig 81 illustrated in FIG. 9I is made of a metal having good heat resistance and thermal conductivity. In the case of the reinforced sealing jig 81 shown in FIG. 9I, three pressing members 84L, 84C and 84R having a blade shape are provided on the upper surface or the lower surface (mounting surface) of the base body 83 provided with the rod 82 for raising and lowering operations. It is what. More specifically, the pressing members 84L, 84C, and 84R are orthogonal to the pressing surface portion of the base 83, and the pressing members 84L, 84C, and 84R are parallel to each other and are integrally formed on the mounting surface. Is provided. The reinforcing sealing jig 81 illustrated in FIG. 9 (II) is the same as that in FIG. 9 (I) except that the central pressing member 84C is omitted, and the other configuration is substantially the same as that in FIG. 9 (I). Are identical. The reinforced sealing jig 81 illustrated in FIG. 9 (III) is obtained by omitting the left and right pressing members 84L and 84R in the one shown in FIG. 9 (I). The reinforced sealing jig 81 shown in FIG. 9 (III) is substantially the same as that shown in FIG.

  Each reinforced sealing jig 81 illustrated in FIG. 9 is used in the following cases. First, in the case of the reinforced seal jig 81 shown in FIG. 3 (I), as shown in FIG. 3 (II), for example, three reinforced seal portions 51UL, 51CL, 51DL and three This is used when forming the reinforced seal portions 51UR, 51CR, and 51DR. Next, in the case of the reinforced seal jig 81 in FIG. 11 (II), this is used when two reinforced seal portions 51UL and 51DL and two reinforced seal portions 51UR and 51DR are formed in a predetermined portion of the bag body 11. Is. Further, in the case of the reinforced seal jig 81 in FIG. (III), any one reinforced seal portion 51UL, 51CL, or 51DL or any one reinforced seal portion 51UR, 51CR, or 51DR is attached to a predetermined portion of the bag body 11. It is used when forming.

  For the side seal bar 71 illustrated in FIG. 9 (IV), this is as follows. That is, the side seal bar 71 in FIGS. 8 (I) to (IV) is provided with a processing jig 61, whereas the one in FIG. 9 (IV) is composed of a single side seal bar. Incidentally, in the method of the present invention described later, instead of using the side seal bar 71 with the processing jig 61 of FIGS. 8 (I) to (IV), the processing jig as illustrated in FIGS. 7 (I) to (XIII). When the 61 and the single side seal bar 71 are used in combination, the side seal bar 71 of FIG. 9 (IV) is used.

  Next, a sealing method according to the present invention will be described with reference to FIG.

  As is well known, methods for producing a synthetic resin packaging bag are roughly divided into two types, a row bag making method and a column bag making method. In the case of the row bag making method, as shown in FIG. 10 (I), the bag body is manufactured so as to form a “horizontally continuous” in which the left side portion and the right side portion are continuous, and finally, the bags are cut and trimmed one by one. Is. In the case of the parallel bag-making method, as shown in FIG. 10 (II), the bag body is manufactured so as to form a “tandem” in which the upper part and the lower part of the bag are connected. Separate and trim. As will be apparent from the following description, the sealing method according to the present invention can be applied to both the row bag making method and the column bag making method. The sealing method according to the present invention is also performed based on the side sealing process. It is performed before the side sealing process, is performed simultaneously with the side sealing process, or is performed after the side sealing process.

  The sealing method of the present invention, which is performed in the row-type bag-making equality production line illustrated in FIG. 11, is performed before the side sealing step. In addition, since the bag body 11 having the upper and lower opening / closing tools 31 and 41 is an object to be manufactured in this example, as the upper mold processing jig 61 and / or the lower mold processing jig 61, FIG. A type as shown in FIG. 7 (XI) is adopted. Of course, when the bag 11 having one opening / closing tool 31 is a manufacturing object, a type as shown in FIG. 7 (XIII) is adopted as the upper mold processing jig 61 and / or the lower mold processing jig 61.

  In FIG. 11, both the front and back bags 12 and 13 supplied from the film supply system on the upstream side of the production line to the downstream side of the production line merge and overlap each other and are on the inner surfaces thereof. The male and female open / close members 32, 35, 42 and 45 are engaged. Furthermore, in this case, the films 12 and 13 are intermittently fed and proceed from the upstream side of the production line to the downstream side of the production line.

  Thereafter, in the films 12 and 13 flowing in a predetermined direction on the production line, first, the bottom seal corresponding portion is sealed a plurality of times (twice) via the bottom seal bar 91. Thus, the bottom seal 17 is formed on both the films 12 and 13. Next, the bottom seals 17 of the films 12 and 13 are cooled by the cooling bar 92.

  After forming the bottom seal, the ends of both the opening / closing tools 31 and 41 are preheated by a known heating means 93 such as an ultrasonic heating means or a high-frequency heating means. This residual heat is for smoothly performing the subsequent processing of the opening / closing tool end without any problem. The ends of both the opening / closing tools 31 and 41 that have been easily processed by receiving the residual heat are shown in FIG. 7 (I) to (V) or FIG. The ends of both the opening / closing tools 31 and 41 are processed mainly by the processing jig 61 of (XIII). At the same time, seal amplification portions 315L, 315R, 415L, and 415R are formed through the processing jig 61, and dense side seals 14S and 15S are also formed.

  Both the rear films 12 and 13 described above are formed with side seals 14 and 15 at the corresponding portions of the side seal by a plurality of (two times) processing through the side seal bar 71. Thereafter, the side seals 14 and 15 of both the films 12 and 13 are cooled via the cooling bar 94.

  The bag body 11 is completed at this stage in both the films 12 and 13 after passing through each of the above steps. Therefore, in the next step, the bags 11 are separated one by one through the cutting bar (cutter) 95.

  The sealing method described above is only an example. Therefore, by using the processing jig 61 shown in each drawing of FIG. 7, various forms of the end portions of the opening / closing tools 31 and 41 in the bag body 11 can be obtained. Of course, this can also be said when the bag 11 is provided with only one opening / closing tool.

  The sealing method of the present invention may be performed after the side seal is formed, not before the side seal is formed. In that case, a heating means (remaining heat means) 93 and a processing jig 61 are disposed after the side seal bar 71.

  When the reinforcing seal portion (51UL, 51CL, 51DL, 51UR, 51CR, 51DR, etc.) is also formed in the sealing process of FIG. 11, the reinforcing seal jig 81 as shown in FIGS. 9 (I) to (III) is used. It is done. It is desirable that the sealing with the reinforcing sealing jig 81 is performed after the side seals 14 and 15 are formed. Therefore, the reinforced sealing jig 81 is disposed on the rear stage of the side seals 14 and 15 on the production line of the bag body 11.

  The sealing method according to the present invention can be applied not only to the row bag making method described with reference to FIG. 11 but also to the column bag making method, and one example is schematically shown in FIG. The sealing method shown in FIG. 12 is substantially the same as that shown in FIG. 11 except that the jigs / instruments / devices correspond to columns. Therefore, the sealing method of FIG. 12 is omitted by referring to the contents described with reference to FIG. However, as for the processing jig 61 used in the sealing method of FIG. 12, the left and right halves are based on the central vertical line in FIG. 7 (I), and the central vertical line in FIG. Left half or right half, left half or right half with reference to the center vertical line in Fig. 7 (XI), left half or right half with reference to the center vertical line in Fig. 7 (XIII) Is used.

  The synthetic resin packaging bag according to the present invention has a fluid flow blocking portion and a seal amplification portion for blocking the flow of fluid at the opening / closing tool end and its periphery. That is, since these components highly seal a predetermined portion of the bag body, fluid in the bag leaks out of the bag or fluid outside the bag flows when the opening / closing tool is in the closed state (closed state of the bag mouth). A high degree of airtightness is maintained without entering the bag. This technical content can be applied to the technical field of packaging bags. Therefore, there is sufficient industrial applicability.

DESCRIPTION OF SYMBOLS 11 Bag body 12 Bag surface film 13 Bag back film 14 Side seal 14S Dense side seal 15 Side seal 15S Dense side seal 16 Top seal 17 Bottom seal 31 Opening and closing tool 311L Side seal intervention part 311R Side seal intervention part 312L Portion 312R Fluid flow blocking portion 313L Open restraint portion 313R Open restraint portion 314 Opening / closing function holding portion 315L Seal amplification portion 315R Seal amplification portion 32 Male opening / closing member 35 Male opening / closing member 41 Opening / closing tool 411L Side seal interposition portion 411R Side seal interposition portion 412L Fluid Flow blocking part 412R Fluid flow blocking part 413L Open restraint part 413R Open restraint part 414 Opening / closing function holding part 415L Seal amplification part 415R Seal amplification part 42 Male opening / closing member 45 Female opening / closing member 51UL Strong Sealing part 51CL Reinforced seal part 51DL Reinforced seal part 51UR Reinforced seal part 51CR Reinforced seal part 51DR Reinforced seal part 61 Processing jig 62 Base body 65 Shaping recess 66 Press surface part 71 Side seal bar 81 Reinforced seal jig 82 Rod 83 Base 84L Press Member 84C Press member 84R Press member 91 Bottom seal bar 92 Cooling bar 93 Heating means 94 Cooling bar 95 Cutting bar (cutter)
Ar1 pressing area Ar2 pressing area Ar3 pressing area Ar4 pressing area Ar5 pressing area Ar6 pressing area Ed edge area

Claims (12)

A horizontally long male opening / closing device comprising a packaging bag body and a horizontally long opening / closing tool for opening / closing the bag mouth of the bag body, the opening / closing tool of which is freely engageable with each other. A member and a horizontally long female opening and closing member; and
The opening / closing tool is provided on the inner surface of the bag surface film and the inner surface of the bag back film on both sides of the bag body so as to face each other so as to be able to engage with each other. And
Side seals are applied to both sides of the bag, and
Both ends of the opening / closing tool are engaged with the male opening / closing member and the female opening / closing member in an intersecting state with the side seals on both sides of the bag body, and the side seal interposed portion of the opening / closing tool and the side seal And are integrated,
In a synthetic resin packaging bag with an opening and closing tool on the premise of
The horizontally long opening / closing tool spanning between both side seals of the bag body has a fluid flow blocking portion for blocking the flow of fluid inside and outside the bag at the opening end portion side, and an opening function as the opening / closing tool. Having an open restraint portion that is restrained and an opening and closing function holding portion that holds an opening and closing function as an opening and closing tool; and
Regarding the fluid flow blocking part, the opening restraint part, and the opening / closing function holding part, the fluid flow blocking part is located inside the both side seals continuously to the inner end of the both side seal interposing parts. And the opening restraining portion is located on the inner side of the fluid flow blocking portion continuously with the inner end portions of the fluid flow blocking portions, and the opening / closing function holding portion is further opened. The inner end of the restraint is continuous between the inner ends, and
The upper left upper right corner of the upper left corner, upper right corner, lower left corner, lower right corner formed by the fluid flow blocking portion and the opening restraint portion that are linearly arranged and the side seal that intersects the two linear portions. Part of the bag front film and part of the bag back film are relatively bonded to two or more corners including two corners selected from the left corner and the lower left corner. A seal amplifying part is formed, and the seal amplifying part is continuous without gaps with respect to the three parts of the side seal, the fluid flow blocking part and the opening restraint part, and
With respect to the bag body in the closed state of the opening / closing tool in which the male opening / closing member and the female opening / closing member are engaged with each other, the fluid flow blocking portion and the seal amplifying portion are the end portion of the opening / closing device and the peripheral portion thereof. A synthetic resin packaging bag with an opening and closing device, characterized in that it prevents the fluid flow of the product.   The synthetic resin-based packaging with opening and closing device according to claim 1, wherein a reinforced seal portion is formed at a boundary between the fluid flow blocking portion and the seal amplifying portion or a boundary between the opening restraint portion and the seal amplifying portion. bag.   The synthetic resin-based packaging bag with an opening / closing tool according to claim 1 or 2, wherein a surface of the fluid flow blocking portion is inclined downwardly toward the side seal side.   The surface of the said open restraint part and the surface of the said fluid distribution prevention part are set as the relative level | step difference from which the surface of the said open restraint part is high and the surface of the said fluid circulation prevention part becomes low. Item 9. A synthetic resin packaging bag with an opening / closing tool according to Item 2.   The synthetic resin system with an opening / closing tool according to any one of claims 1 to 4, wherein the seal amplification part is formed at two corners on the left side of the bag body and two corners on the right side of the bag body, respectively. Packaging bag. The synthetic resin-based packaging bag with an opening / closing tool according to any one of claims 1 to 5, wherein the end of the opening / closing tool and the periphery of the end of the opening / closing tool are processed to prevent fluid flow at the processing site. In the sealing method for forming the shape structure of
As a step for forming the opening restraint portion and the fluid flow blocking portion, the male opening / closing member end portion and the female opening / closing member end portion engaged with each other are integrally formed including a fluid non-passing portion having no internal gap. An end sealing step of the opening and closing tool, and
As a step for forming the seal amplification part, a part of the bag front film and a part of the bag back film are relatively bonded to each other at a corner part formed by the side seal and the fluid circulation blocking part. Having a perimeter edge sealing step; and
A side sealing step for bonding both side portions of the two overlapping films is provided as a step for bonding both side portions of the bag front film and both side portions of the bag back film. A sealing method for a synthetic resin packaging bag with an opening / closing tool.   The end seal step and the end periphery seal step are carried out at any time selected from before the side seal step, simultaneously with the side seal step, and after the side seal step. The sealing method in the synthetic resin packaging bag with an opening / closing tool described in 6.   The sealing method in the synthetic resin packaging bag with an opening / closing tool according to claim 6 or 7, wherein the end sealing step and the end periphery sealing step are simultaneously performed.   The seal in the synthetic resin packaging bag with a switch according to any one of claims 6 to 8, wherein an end softening step for softening an end of the switch is performed before the end sealing step. Method. In the processing tool for an open / close terminal used in the sealing method according to any one of claims 6 to 9,
A groove-shaped shaping recess for introducing the male opening / closing member end and the female opening / closing member end in an engaged state of the opening / closing tool to form the opening restraint portion and the fluid flow blocking portion; A flat pressing surface part for forming the seal amplification part, and
The shaping recess and the pressing surface portion are arranged in the same plane, and the pressing surface portion surrounds the shaping recess and is adjacent to the shaping recess without a gap. Terminal processing jig.   The processing tool for an opening / closing tool terminal according to claim 10, wherein the groove of the shaping recess gradually becomes shallower toward a side seal on the front end side in the length direction of the shaping recess.   The processing tool for an opening / closing tool terminal according to claim 10, wherein the groove of the shaping recess becomes shallower stepwise as it goes toward the side seal at the front end side in the length direction of the shaping recess.

Images