JP5300877B2 - Double pouch with non-bonding surface that can be pressed open, and heat-sealing alloy mold suitable for its manufacture - Google Patents

Description

  The present invention relates to a double pouch having two storage parts so that different kinds of liquid materials can be separately stored, and in particular, the contained different kinds of liquid materials are first mixed and then opened and poured. The present invention relates to a double pouch having a pressure-openable non-joint surface that can be put out, and a heat-sealing alloy mold suitable for its manufacture.

  Pouches obtained by hot-pressing two films can easily mold storage parts with excellent waterproofness and airtightness, so liquid detergents, lotions, medicines, drinks, etc. can be packaged. Widely used in applications.

  Pouches usually contain single component liquids, but some types of pouches are formed to contain different types of liquids, or liquids and powders separately, which is a duplex storage pouch ( It is known as Patent Document 1, especially FIG.

  The duplex storage pouch has a structure in which a boundary line defining two storage spaces is extended in a zigzag shape to form a large number of vertices. Therefore, when the storage part is pressed by hand at the time of opening, the pressure concentrates on the apex part, the apex part is destroyed by the pressure applied in this way, and the partitioned storage part is opened, so that different kinds of liquid substances are formed. It is explained that it will be mixed.

  By the way, in reality, if you try to destroy the zigzag apex of the duplex storage pouch with your hand pressing force, it will not open even if you press it with considerable force. In other words, the pressure when pressing the storage part by hand does not concentrate on the top of the zigzag shape and is evenly distributed around the periphery, so even if the adult holds down a lot of force, the pressure applied to the top of the boundary line is weak, There is a problem that it is difficult to open.

  In order to solve the problem of such a duplex storage pouch, the present inventor has formed a pouch in which one or more small triangular spaces are formed on a boundary line that divides two storage spaces (Patent Document 2, particularly FIG. I have proposed 1). In the pouch proposed by the present inventor, the joint strength at the position where the triangular space is provided at the boundary line is the weakest, so it is considered that the part can be broken and opened even with a small force. Requires considerable force to break and open in this system.

US Patent Publication No. 2004/0079763 Korean Utility Model Publication No. 20-2010-0007562

  Therefore, the present invention seeks to solve the above problems.

  An object of the present invention is a double pouch in which different kinds of liquid substances are separately stored in storage sections divided into two, and a specific part of a boundary line that defines the storage section is provided during transportation or storage. The present invention provides a double pouch having a non-joint surface that can be pressed and opened in a structure that is opened by a dynamic load that is not opened by a mechanical load and is pressed by a user with a small force.

  Another object of the present invention is to manufacture a double pouch having a non-joint surface that can be pressed and opened with a structure in which a non-joint surface can be easily formed at a specific portion between the compartments of the double pouch. Provide heat-sealing alloy molds.

  In order to achieve the above object, the present invention comprises the following arrangement.

  That is, in the double pouch according to the present invention, the outer peripheral edge is heat-sealed by the outer joint line, and the middle is heat-sealed by the inner joint line. A double pouch capable of accommodating different types of contents by forming a storage portion, wherein a pressure release portion is provided at a substantially middle portion of the inner joint line, and the bifurcated portion extends from the inner joint line. A non-joint space having a round triangular shape or a semicircular shape is formed in the pressure release portion by the existing first branch joint line and the second branch joint line, and in the middle of the first branch joint line. Is provided with a long non-joining portion communicating between the first storage portion and the non-joining space, and between the non-joining space and the second housing portion in the middle of the second branch joint line. A short non-joining portion that communicates is provided.

  In the above-described configuration, a pair of joint support lines extending at an acute angle may be further provided in the middle of the inner joint line forming the pressure release portion. In this case, the first branch joint line and the second branch joint line are formed so as to extend in a bifurcated manner from the vertices of each pair of joint support lines.

  More preferably, on the opposing surfaces of the pair of joint support lines, joint protrusions can be provided at alternate positions.

  The widths of the first branch joint line and the second branch joint line are preferably set to a narrow width corresponding to 1/3 of the inner joint line.

  Further, the length of the long non-joining portion is preferably 5 to 7 mm, and the short non-joining portion is preferably set to 0.5 to 0.7 times as long as the long non-joining portion.

  The heat-sealing alloy mold suitable for the production of the double pouch according to the present invention is such that two film sheets are heat-sealed to form two storage portions by the outer joining line and the inner joining line. A thermocompression bonding pad is attached to the one side mold, and a linear heater is provided on the opposite side mold, and the thermocompression bonding pad is connected to the first branch joint. A first branch bonding pad and a second branch bonding pad for forming a line and a second branch bonding line, and each of the first branch bonding pad and the second branch bonding pad has a long length. A long notch and a short notch corresponding to the joining part and the short non-joining part are formed.

  Further, instead of forming a long cut and a short cut in the thermocompression bonding pad, a long heat sink and a short heat sink may be provided at positions corresponding to the linear heater, respectively.

  The double pouch according to the present invention can separately store different kinds of liquid substances in the partitioned first storage section and second storage section, and the partitioned first storage section and second storage section. Is provided with a pressure release portion having a double blocking structure with a long non-joining portion and a short non-joining portion as a non-joining space, wherein the long non-joining portion and the short non-joining portion are provided. The joint is not opened by a static load applied during transportation or storage, but is opened only by a dynamic load that the user holds the outside with hands. In particular, the present invention can be applied to the packaging of different liquid materials such as hair dyes and oxidants that must be packaged.

  The heat seal alloy mold for manufacturing a double pouch according to the present invention is a process in which a pair of molds heat seal two film sheets, and the first branch bonding pad and the second one of the one side mold. By the long notch and the short notch included in each of the branch bonding pads, a pressure releasing part having a long non-joining part and a short non-joining part is easily provided.

It is a front view which shows one Example of the double pouch which concerns on this invention. FIG. 2 is an enlarged view of a main part “A” shown in FIG. 1. It is an expanded sectional view along the III-III line of FIG. It is a front view which shows the other Example of the double pouch which concerns on this invention. FIG. 5 is an enlarged view showing an example of a main part “B” part shown in FIG. 4. FIG. 6 is an enlarged view showing another example of the “B” portion shown in FIG. 5. It is a fragmentary perspective view which shows an example of the heat seal alloy type | mold suitable for manufacture of the double pouch which concerns on this invention. It is the schematic which shows the manufacturing process of the double pouch which concerns on this invention. It is a fragmentary perspective view which shows the other example of the heat seal alloy type | mold suitable for manufacture of the double pouch which concerns on this invention.

  Hereinafter, the double pouch according to the present invention and a heat-sealing alloy mold suitable for manufacturing the pouch will be described in detail.

  In the double pouch according to the present invention, as shown in FIG. 1, the outer peripheral edge is heat sealed to the outer joint line 2 to form the outer shell, and at the same time, the inner joint line 4 crosses at a substantially middle portion. A configuration including a first storage portion 6 and a second storage portion 8 which are heat sealed and divided into two is provided.

  In the first storage section 6 and the second storage section 8 divided in two, each component is a different liquid, for example, a hair dye and an oxidizer that must be separately packaged before use, A liquid material having a slight viscosity is accommodated separately.

  On the other hand, a pressure release unit 10 is provided in the middle of the inner joint line 4 that becomes the boundary between the first storage unit 6 and the second storage unit 8.

  As shown in FIG. 2, the pressure release portion 10 is formed in a round triangular shape by a first branch joint line 12 and a second branch joint line 14 that are divided into two branches from the inner joint line 4, or It includes a non-joint space 16 formed in a semicircular shape, and each of the first branch joint line 12 and the second branch joint line 14 includes a long non-joint part 18 and a short non-joint part 20 in the middle. Become.

  Here, the widths of the first branch joint line 12 and the second branch joint line 14 are preferably about ３ of the inner joint line 4. It has a weaker bonding force than other parts.

  Since the double pouch according to the present invention joins the outer joint line 2 and the inner joint line 4 with a width of 6 to 7 mm in the same manner as a normal pouch, the first branch joint line 12 and the second branch joint line 14 The width is preferably 2 mm.

  Next, the cross-sectional structure of the long non-joining portion 18 will be described. As shown in FIG. 3, the first branch joining lines 12 adjacent to both sides are integrally sealed. From the corresponding part, a structure in which two films are simply overlapped is obtained. In other words, in the process of heat sealing two films, the long non-bonded portion 18 is not pressed by the heater and is simply influenced by the heat sealing atmosphere held in the range of 200 to 275 ° C. Is only melted, and the inside is not fused and keeps overlapping.

  The long non-joining portion 18 that is not heat sealed is not easily distinguished from the first branch joining line 12 that is sealed together in appearance even after being cooled.

  Since the long non-joint portion 18 provided in this way is a portion that is not sealed and is simply in contact with each other, it is opened when a dynamic load is applied by a user's hand pressing the outside. Become.

  Further, the short non-joining portion 20 of the second branch joint line 14 has a structure similar to that of the long non-joining portion 18 and is simply shortened in length.

  Due to the characteristic structure described above, the long non-joining portion 18 and the short non-joining portion 20 are always open between the first branch joint line 12 and the second branch joint line 14, respectively. And since the liquid substance accommodated in the 2nd accommodating part 8 cannot pass naturally, it does not arise that different types of liquid substances mix. That is, the long non-joining portion 18 and the short non-joining portion 20 are contacted without gaps due to the action of static electricity due to the characteristics of the material after being formed. Therefore, unless the user pushes the outside of the pouch by hand, The space between the branch joint lines 12 and the second branch joint line 14 are kept closed.

  On the other hand, in the double pouch according to the present invention, the external pressure applied to the first storage unit 6 and the second storage unit 8 is such that the dynamic load by the user's hand and the weight of the pouch stacked during transportation or storage are lower. And static load applied to

  Since the static load acts on all of the first storage portion 6 and the second storage portion 8 from the outside, the internal pressure thereof becomes uniform due to dispersion, and therefore, the long non-joining portion 18 and the short non-joining portion. The force applied to the portion 20 is weaker than the bonding force due to static electricity, and is kept closed.

  However, since the length of the long non-joining portion 18 becomes a fragile point, there is a risk of leakage from the portion of the long non-joining portion 18 due to a static load. The non-bonded space 16 accumulates and the non-bonded space 16 is doubly blocked by the short non-bonded portion 20, so that the leaked liquid material fills the inside of the non-bonded space 16.

  Furthermore, as the non-joint space 16 is filled with the leaked liquid material, the long non-joint part 18 and the short non-joint part 20 are tensioned while bulging in a blister shape, so that the non-joint space 16 is more closed. The space between the first storage portion 6 and the second storage portion 8 is not opened by a static load.

  Therefore, during transportation or storage, the first storage unit 6 and the second storage unit 8 are naturally opened so that different types of liquid substances do not mix.

  On the other hand, if the length of the long non-joining portion 18 of the first branch joint line 12 provided between the first storage portion 6 and the non-joining space 16 is too long, the non-joined surface is brought into close contact. It becomes difficult to be maintained, and conversely, if it is too short, it becomes difficult to be easily opened only by a hand pressing force, so it must be limited to an appropriate length. According to the experiment by the present inventor, this length is such that the non-joint space 16 of the first storage portion 6 is opened in a range of 5 to 7 mm from the extent that an adult pushes it appropriately with a palm.

  Further, when the length of the long non-joint portion 18 is 8 mm or more, the liquid material in the first storage portion 6 is brought into the non-joint space from the pouch near the lowermost side where the static load of the stacked pouch is applied to the maximum. 16 is not desirable because it may easily leak, and a length of 4 mm or less is inconvenient because it cannot be opened unless pressed with a stronger force.

  The length of the short non-joining portion 20 normally prevents the flow of the liquid material, but is sufficient to be opened when a dynamic load is applied. More specifically, the length of the first non-joining portion 12 is long. The length is set to 0.5 to 0.7 times the joint 18.

  Here, if the length of the short non-joint portion 20 is less than 0.5 times that of the long non-joint portion 18, it will not open unless pressed by the force doubled by the user. This is not desirable because the preventive action is weakened and the problem of easily leaking to external impacts arises.

  According to the experiments of the present inventors, the long non-joining portion 18 is 6 mm, and the short non-joining portion 20 can obtain a desired closing action from a sample set to 3.5 mm.

  In the double pouch of the above-described embodiment, the user presses the first storage portion 6 with a palm and opens it to start mixing separately stored liquid materials. That is, when the user pressurizes the outer surface of the first storage unit 6, the liquid material stored in the first storage unit 6 generates a pressure, and the pressure is a dynamic load and the pressure release unit 10 is long and non-joined. The gap which is given to the part 18 and touched is opened.

  In other words, every time the user presses the first storage portion 6 of the double pouch, the liquid material flows into the non-joining space 16, and by repeating this, the pressure inside the non-joining space 16 is filled with the liquid material. Then, this pressure is applied to the short non-joining part 20, and by opening the short joining part 20, the liquid material in the first storage part 6 is mixed with the liquid material in the second storage part 8. it can.

  In the double pouch according to this embodiment, a dynamic load due to a force applied from the outside by a user acts on the long non-joining portion 18 and the short non-joining portion 20 of the pressurizing release portion 10 in order. The storage unit 6 and the second storage unit 8 are in communication with each other, and are not opened by a static load applied to a lower pouch from a stacked pouch during transportation or storage.

  That is, the static load applied to the first storage unit 6 and the second storage unit 8 is evenly distributed over the entire interior and does not reach a pressure enough to open the long non-joint portion 18. The liquid material in the storage unit 6 does not flow into the second storage unit 8 and mix.

  In addition, a strong static load may be momentarily applied to the pouch due to external impact during transportation. In this case, however, the location where leakage occurs is limited to the long non-joint portion 18 and the non-joint space 16 and The space between the two storage portions 8 is kept closed by the short joint line 20 as it is. Therefore, even if an external impact is applied during transportation, the liquid material in the first storage portion 6 and the liquid material in the second storage portion 8 do not mix.

  The double pouch according to the present invention is not limited to the above-described embodiment, and can be implemented in the following configuration as long as the object of the present invention can be achieved.

  4 and 5 show another embodiment of the double pouch according to the present invention.

  The feature of this embodiment is a structure further comprising a pair of joint support wires 22 that are connected to the pressure release portion 10 from the inner joint line 4 with the same width and are joined at an acute angle to form a top portion. In addition, a triangular or semicircular non-joint space 16 is provided at the top where the joint support line 22 is coupled to the first branch joint line 12 and the second branch joint line 14 having a narrow width. The basic configuration is such that a long non-joining portion 18 is provided in the middle of the first branch joint line 12 and a short non-joining portion 20 is provided in the middle of the second branch joint line 14. It is the same.

  According to the above-described configuration, since the joint support wire 22 that extends long has a higher hardness than the periphery thereof, both sides of the first branch joint wire 12 are supported while being tensioned by the joint support wire 22. .

  Furthermore, the space between the joint support lines 22 is formed in a portion that is long and deep from the first storage portion 6, and the liquid material is not yet filled from this portion to a portion close to the first branch joint line 12. Since it is formed in a vacuum, it adheres strongly. Therefore, since the closed state of the long non-joint portion 18 supported by the joint support line 22 is strongly maintained, it does not naturally open even when a large static load is applied during transportation.

  In this embodiment, when the user presses the first storage portion 6, the stored liquid material is guided to the long non-joining portion 18 by the pair of joining support wires 22, and gives concentrated pressure. The long non-joint portion 18 which is strongly adhered can be opened without any difficulty.

  That is, the double pouch of this embodiment allows the user to hold the first storage portion 6 with the thumb or the palm so that the liquid substance is concentrated inside the joint support line 22 of the pressure release portion 10. The pressure generated by the liquid material by such an operation is a dynamic load, and is surely applied to the long non-joint portion 18 without loss and is released.

  FIG. 6 shows a modified example according to this embodiment, and shows that the joining protrusions 22a are provided on the opposing surface of the joining support line 22 at positions where they alternate. Further, in this modification, the pair of bonding support lines 22 are extended substantially at right angles to the inner bonding line 4.

  In this modified example, the inner passage of the bonding support line 22 is gently bent by the bonding protrusion 22a, and the pressure applied to the long non-bonding portion 18 is attenuated. The closed state between the parts 8 can be kept even stronger and will not open even if a sudden impact is applied during transport.

  The double pouch of the present invention described above can be manufactured by the heat seal alloy mold shown in FIG.

  The illustrated heat seal alloy mold is schematically composed of a one-side mold 10a that limits only a portion corresponding to the pressure release portion 10 of the double pouch according to the present invention, and an opposite-side mold 10b that is fitted to this mold. It is shown in the figure.

  The one side mold 10a of the heat sealing alloy mold is provided with a pad for pressure bonding, and the opposite side mold 10b is provided with a linear heater for heat sealing.

  The pad of the one-side mold 10a includes an inner bonding pad 40a corresponding to the inner bonding line 4, a bonding support pad 220a corresponding to the bonding support line 22, and the first branch bonding line 12 and the first branch bonding line 12 described above. First branch bonding pads 120a and second branch bonding pads 140a respectively corresponding to the two branch bonding lines 12 are provided.

  Here, the first branch joint pad 120a and the second branch joint pad 140a are integrally formed with a long notch 180a and a short notch 200a corresponding to the long non-joint portion 18 and the short non-joint portion 20, respectively. The

  The linear heater corresponds to the inner joint line 40b corresponding to the inner joint line 4, the joint support line 220b corresponding to the joint support line 22, and the first branch joint line 12 and the second branch joint line 14, respectively. A first branch joint line 120b and a second joint line 140b are provided.

  The manufacturing process of the double pouch of the present invention using the heat-sealing alloy mold having such a configuration is performed in the same manner as a known pouch.

  FIG. 8 is a diagram for explaining a manufacturing process of a double pouch according to the present invention. When two sheets of pouches are overlapped, they are supplied between the molds 10a and 10b and combined. Primary sealing is performed by heat-sealing the sealing part from an atmosphere in the range of 200 to 275 ° C.

  Since the primary heat sealing is a process of forming the first storage portion 6 and the second storage portion 8 described above, one side of both the storage portions 6 and 8 remains unsealed. A nozzle N is inserted into the unmatched portion, and a predetermined liquid material is injected.

  When the injection of the liquid material is completed, a desired double pouch is obtained by performing heat sealing of the part that is molded and not sealed.

  In addition, when the liquid to be injected is to be altered if stored for a long time, it can be heat sealed while filling with nitrogen gas at the end of the injection process.

  The description with reference to FIG. 8 is divided into primary heat sealing, liquid injection, and secondary heat sealing, but this is divided for convenience of description. When the injection of the liquid material is completed, the nozzle N is pulled out from the pouch, and at the same time, the two molds 10a and 10b are closed and the secondary heat sealing is performed.

  The above-mentioned heat sealing alloy mold is not limited to the structure of FIG. 7, and as shown in FIG. 9, in the opposite mold 10b provided with a linear heater, the bonding support extending from the inner bonding line 40b. A long heat sink 180b and a short heat sink 200b are respectively provided on the back surfaces of the first branch joint line 120b and the second branch joint line 140b connecting the lines 220b. The portions corresponding to the joint portion 18 and the short non-joint portion 20 remain closed without being dissolved.

  In the double pouch according to the present invention, the non-joining space 16 provided in the pressure release portion 10 is not limited to one place as in the above-described embodiment, but is arranged in a plurality. It is also possible to do.

2 outer joint line 4 inner joint line 6 first storage part 8 second storage part 10 pressure release part 10a one side mold 10b opposite side mold 12 first branch joint line 14 second branch joint line 16 non-joint space 18 Long non-joining part 20 Short non-joining part 22 Joining support line 22a Joining projection part 40a Inner joining pad 40b Inner joining line 120a First branch joining pad 120b First branch joining line 140a Second branch joining pad 140b Second branch Joining line 180a Long notch 180b Long heat sink 200a Short notch 200b Short heat sink 220a Joining support pad 220b Joining support line

Claims (7)

The outer peripheral edge is heat-sealed by the outer joint line, and the middle is heat-sealed by the inner joint line, thereby forming two partitioned first storage portions and second storage portions to form different kinds of liquid substances. A double pouch that can be accommodated;
A first branch joint line (12) and a second branch joint line (14) extending in a bifurcated manner in the middle of the inner joint line (4), and the first branch joint line (12) And a non-joint space (16) formed in a round triangular shape or a semicircular shape by the second branch joint line (14),
In the middle of the first branch joint line (12) and the second branch joint line (14), a long non-joint that closes between the first storage part (6) and the non-joint space (16), respectively. A pressure release part (10) provided with a part (18) and a short non-joining part (20) for closing between the non-joining space (16) and the second storage part (8),
The long non-joining part (18) and the short non-joining part (20) are opened by the pressure applied to the first storage part (6). Double pouch with.   The pressure release part (10) further includes a pair of joining support lines (22) joined at an acute angle extending from the inner joining line (4), from the top of the joining support line (22). The said 1st branch joining line (12) and the said 2nd branch joining line (14) are each divided into two forks, and have a non-joining surface which opens and closes according to claim 1 characterized by things. Double pouch.   3. The non-bonded portion to be pressure-released according to claim 2, wherein bonding protrusions (22 a) are provided alternately on opposite surfaces of the pair of bonding support lines (22). Has a double pouch.   The width of the first branch joint line (12) and the second branch joint line (14) is set to a narrow width corresponding to 1/3 of the inner joint line (4). Item 3. A double pouch having a non-joint surface that opens and closes according to item 1 or 2.   The length of the long non-joining portion (18) of the pressure release portion (10) is 5 to 7 mm, and the short joining line (20) is 0.5 to 0.00 mm of the long non-joining portion (18). The double pouch having a non-joint surface for pressing and opening according to claim 1 or 2, characterized in that the length is set to 7 times. A thermocompression bonding pad is attached to one side mold so that two film sheets are heat-sealed to form two storage parts by an outer joining line and an inner joining line. In the heat seal alloy mold in which the linear heater is provided in the mold,
The thermocompression bonding pad includes an inner bonding pad (40a) corresponding to the inner bonding line (4), a bonding support pad (220a) corresponding to the bonding support line (22), and a first branch bonding line (12). ) And a second branch bonding pad (120a) and a second branch bonding pad (140a) respectively corresponding to the second branch bonding line (14), and the first branch bonding pad (120a) and the second branch bonding pad (140a). The bifurcated bonding pad (140a) is provided with a long notch (180a) and a short notch (200a) for forming a long non-joining part (18) and a short non-joining part (20), respectively. A heat-sealing alloy mold suitable for manufacturing a double pouch having a non-joint surface that can be pressed open. A thermocompression bonding pad is attached to one side mold so that two film sheets are heat-sealed to form two storage parts by an outer joining line and an inner joining line. In the heat seal alloy mold in which the linear heater is provided in the mold,
The linear heater includes a joint support line (220b) corresponding to the joint support line (22) of the inner joint line (40b), a first branch joint line (12) and a second joint line of the inner joint line (40b). A first branch junction line (120b) and a second branch junction line (140b) respectively corresponding to the branch junction line (18),
A long heat sink for forming the long non-joining part (18) and the short non-joining part (20) in the middle of the first branch joint line (120b) and the second branch joint line (140b), respectively. 180b) and a short heat sink (200b), each being provided with a heat-sealing alloy mold suitable for manufacturing a double pouch having a non-bonding surface that can be pressed open.

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