TWI414456B - Automatic liquid stop bag with bent parts - Google Patents

Abstract

An automatic liquid stop bag with a bending portion comprises: two outer films (2a,2b), two inner films (1a,1b), a storage area (4), a discharge channel (8), a bent portion (84), an inlet (81), an outlet (82) and a tear portion (10). The storage area (4) is formed by coupling the two outer films (2a,2b) by hot sealing. The two inner films (1a,1b) are disposed between the two outer films (2a,2b) and coupled the two inner films (1a,1b) by heat sealing to form a discharge channel or the discharge channel (8) is coupled to the two inner films by heat sealing and formed between the two inner films (1a,1b), and the internal sides of the two inner films are not coupled to form the inlet (81) and outlet (82), and the tear portion (10) is formed at an edge of the two inner films and the two outer films (2a,2b) and separated from the two inner films (1a,1b) to expose the outlet (82) of the discharge channel (8).

Description

Automatic liquid stop bag with curved part

The present invention relates to a liquid container structure, and more particularly to an automatic liquid flow stop bag having a curved portion.

Commercially available beverages or liquid foods and cleaning products are mainly filled with canned plastic bottles with caps. Currently, the common bottle structure is a one-piece bottle body, and the bottle body 11 has The space for accommodating the liquid, the bottle body is provided with a bottle mouth for pouring into the liquid, or inserted into the straw to absorb and drink. Every year, hundreds of billions of PET bottles are used worldwide. The use of disposal has a huge impact on environmental protection, especially the transportation and disposal of empty bottles. The subsequent treatment is quite inconvenient.

In order to respond to environmental issues, there is a flexible packaging structure in which liquid can be contained. When the user wants to eat or use the liquid, tearing the flexible package, an opening is formed, so that the liquid in the flexible package can be poured through the opening. However, if the flexible packaging bag structure is to be sealed again, it must pass through the zipper bag. If it is closed improperly or forgotten to close, it will overflow as well, and the zipper bag does not have a stop function, so the opening is formed by tearing. After that, it must be carefully stored. Once it is dumped, the liquid in the soft bag will leak through the opening, which will cause pollution or waste, which is quite inconvenient. U.S. Patent No. 5,529,224 (issued on May 27, 1994), which is incorporated herein incorporated by reference in its entire entire entire entire entire entire entire entire entire entire entire entire entire entire portion The passage has an inlet adjacent to the liquid container for circulation. And having a first piece, a first sheet unit, and a second sheet unit, wherein the first sheet unit and the second sheet unit have an original planar position and a longitudinal edge, are arranged face to face, and along the longitudinal edge They are sealed together and have enough flexibility to arch apart from each other when an external force is applied to the liquid container, forming a flow channel between them. When the external pressure is released, at least one of the sheet units has sufficient elasticity to return a first sheet unit and a second sheet unit to the original planar position seal. A mouth having a lateral width greater than the lateral width of the inlet and automatically closing the valve between the plate channels has an additional portion of the inlet and the mouth, wherein there is a lateral width greater than the lateral width and the lateral width. The patent is characterized in that the first sheet unit and the second sheet unit need to have a certain elasticity, that is, the elastic sheet material is required to form the first sheet unit and the second sheet unit, which will result in production. The increase in the number of processes and the difficulty in selecting the elasticity of the material. If the elasticity is too tired, there is a possibility of leakage. However, if the elasticity is too large, there is a possibility that the liquid cannot be squeezed, and it is impossible to achieve complete automatic, and the actual improvement is improved. need.

In view of the above, in order to improve the above-mentioned shortcomings of the prior art, in order to avoid the use of the sheet-like elastic body and to maintain a good and long-lasting sealing effect, an automatic liquid flow-stopping bag with a curved portion is proposed, including: The same width but narrower inner membrane forms a filling zone, a storage zone and a discharge zone by heat sealing means followed by two outer films and two inner films. The discharge area is further formed by heat sealing to form a discharge passage, and at least one inlet, a curved portion and an outlet and a heat-sealing dotted line with the two outer films form a tearing portion. The inlet and the outlet; the four membranes are specially sealed or pre-coated with heat-resistant materials at the inlet and the outlet when the inlet and the outlet are heat-sealed, so that the inner membrane does not end within the outer membrane when the outer membrane is heat-sealed, but each The inner membrane is followed by heat sealing, and the tearing portion with the heat sealing dashed line and the notch is located on one side of the inner film, and the outlet of the discharge channel is exposed after the tearing portion is separated from the inner film. .

When the outer membrane is squeezed by an external force, the pressure forces the liquid in the bag to rise, and the rising liquid causes the outer membrane of the section to be pulled outward, thereby automatically opening the inlet of the discharge channel, so that the liquid flows into the row from the inlet of the discharge channel. The material channel flows out through the outlet; when the external force is released, the reaction force of the liquid returning storage area generates suction force, and the discharge channel is specially provided with a bending portion, and the suction force bends the bending portion to cause the reaction force to strengthen and form a stop flow. The effect is that the two inner membranes are attached to each other to close the exhaust passage.

The automatic liquid flow stop bag with the curved portion of the invention can not be opened when the metal bag is poured, and the inner film of the discharge channel in the discharge channel is still attached tightly due to no external pressure. The exhaust passage is closed so that liquid does not leak through the exhaust passage. When in use, the user only needs to apply force to squeeze the storage area, and the liquid of the second outer membrane is increased due to the squeeze storage area, so that the outer membrane of the non-stressed area is pulled outward to naturally open the entrance of the second intima, thereby The inlet is automatically opened and the liquid will flow out through the discharge channel due to the pressure.

The automatic liquid flow stop bag with the curved portion proposed by the invention is simple and environmentally friendly and waste-reducing in use. Because it does not need to use the traditional rotating cover, it can be controlled by hand to control the liquid outflow and flow rate and automatically close after use. There is no liquid outflow when pouring. Because the invention only needs two inner membranes, the two outer membranes can achieve the effect of the traditional liquid bottle and its rotating cover. It not only has low manufacturing cost and is easy to use. It only has two bags of film when discarded, does not occupy space, and achieves the advantages of material saving and waste reduction, which is the best solution to replace traditional liquid packaging.

The utility model is characterized in that: the storage area is pressed by an external force to pressurize the liquid to rise, so that the outer film is hydraulically pulled outward to automatically open the inlet of the discharge channel, and the liquid follows the The curved portion of the discharge channel flows toward the outlet; when the pressure is released, the liquid returns to the reaction suction force of the storage region, so that the two inner membranes of the curved portion of the discharge channel are mutually adsorbed by the reaction force to form a closed Discharge channel, wherein when the external pressure is released, the liquid instantaneously falls back from the bending portion to the storage area, and a reaction force is generated, forming a discharge channel blocking effect, and the second inner membrane is adsorbed at the bending portion due to the bending portion, thereby generating an enhanced locking effect. .

Preferred embodiments of the present invention and their effects are described below in conjunction with the drawings.

Referring to FIG. 1A, FIG. 2A, and FIG. 2B, the first embodiment of the automatic liquid flow restricting bag with a curved portion of the present invention is provided in a horizontal manner. 2C and 2D are the first embodiment: another embodiment in which the two inner membranes are disposed in a horizontal manner.

The automatic liquid flow stop bag 1 with a curved portion of the present invention comprises: two outer films 2a and 2b, two inner films 1a and 1b, a storage area 4, a filling area 5, a discharge area 6, and a discharge path 8. The tearing portion 10 is removed.

The two outer films 2a and 2b are stacked one on another, and can be formed into a bag shape via a heat sealing means.

The storage area 4 is formed between the two outer films 2a and 2b by heat sealing means followed by two outer films 2a and 2b for storing the liquid 9, wherein the storage area 4 is located in a heat seal formed by heat sealing means. Between lines 3b, 3c, 3d.

The filling zone 5 is located between the two outer membranes 2a and 2b, and is formed on one side of the storage zone 4 with heat seals 3c, 3b, 3d for filling the liquid 9 to the storage zone 4, and filling the liquid 9 with the liquid. After the zone 4, the filling zone 5 is closed with a closure element followed by two outer membranes 2a and 2b. The sealing member is preferably a heat sealing wire 3a formed by heat sealing means, but the invention is not limited thereto. As shown in FIG. 1B, the closing member may be a zipper 3h, thereby allowing the user to The liquid can be freely filled and then sealed with a zipper for 3 hours. If the discharge is smooth, after the filling is completed, the heat sealing line 3f can be applied at the same height as the inlet 81, so that the liquid in the bag is pressurized. It will not rise above the discharge channel 8 inlet 81 when it rises. This ensures that liquid is diverted from the inlet 81 of the discharge channel 8 to the outlet 82.

The discharge zone 6 is located between the two outer membranes 2a and 2b and is disposed on one side of the storage zone 4, wherein the discharge zone 6 and the filling zone 5 are preferably partitioned by a heat seal line 3e.

Two inner membranes 1a and 1b are interposed between the two outer membranes 2a and 2b, horizontally aligned with the two outer membranes 2a and 2b, and disposed in the discharge zone 6, in the present embodiment, two inner membranes 1a and 1b has the same width as the two outer films 2a and 2b, and the length is shorter than the two outer films 2a and 2b, so that the left and right sides and the top end of the two inner films 1a and 1b are aligned with the two outer films 2a and 2b. One side of the two inner membranes 1a and 1b protrudes from the discharge area 6, and one side of the two inner membranes 1a and 1b is located in the filling area 5, but the structure of the present invention is not limited thereto.

The discharge zone 6 is composed of two inner membranes 1a, 1b sandwiched by two inner membranes 2a, 2b, and a discharge passage 8 is formed by heat sealing, and the discharge passage 8 is composed of an inlet 81, a curved portion 84, and an outlet 82. There are three methods for heat sealing: (1) the inner film 1a, 1b is separately heat-sealed to form the curved portion 84, and together with the two outer films 2a, 2b, heat-sealing the boundary line, the outlet, and the inlet of the filling region 5 and the discharge region 6. . (2) The inner film 1a, 1b and the outer film 2a or 2b are heat-sealed to form the bent portion 84, and together with the other outer film 2b or 2a, the boundary line and the outlet and the inlet of the filling region 5 and the discharge region 6 are heat-sealed. . (3) The inner membranes 1a, 1b are heat-sealed together with the second outer membranes 2a, 2b to form (a) the boundary line between the filling zone 5 and the discharge zone 6; (b) the inlet 81 of the discharge channel 8, the curved portion 84, Exit 82. The purpose of the three methods is to strengthen the inner membranes 1a, 1b in the curved portion 84. When the liquid falls back into the storage region 4, a reaction force is generated to cause the two inner membranes 1a, 1b to adsorb each other. As for the adsorption force, the adsorption is caused by adsorption. The time space is large to decide. In the first aspect, since the inner membranes 1a and 1b of the curved portion 84 are not combined with the outer membranes 2a and 2b, the living space is large and the adsorption force is large.

The heat sealing method of the inlet 81 and the outlet 82 in the discharge channel 8 is as follows:

The heat-resistant material is applied in advance at a predetermined position of the inlet 81 and the outlet 82 or when the two outer films 2a, 2b and the two inner films 1a, 1b heat-sealed the outlet 82 and the inlet 81 together at a predetermined position, so that the heat-sealing is performed at the predetermined position. The inner surface of the inner membranes 1a, 1b does not follow. However, the outer faces of the respective inner membranes 1a, 1b and the respective outer membranes 2a, 2b are formed to expand outward when the outer membranes 2a, 2b are pushed up by the pressure, and the intrinsic membranes 1a are respectively invisible. And 1b, the inner surface of the inner membranes 1a, 1b is not pulled apart, and the inlet 81 and the outlet 82 are formed.

Since there is at least one curved portion 84 in the discharge channel 8, the pattern may be S-shaped, corner-shaped, curved, lightning-shaped, and W-shaped. The purpose of the curved portion 84 is to enhance the suction force at the turning turn, and invisibly enhance the effect of the inner two films 1a and 1b being adhered to each other, thereby forming an automatic strengthening lockout. Further, a railing 85 can be provided in the curved portion 84 as a flow blocking force when the liquid is not pressurized, and is also one of the functions of strengthening the locking. A tearing portion 10 is further disposed at the outer film of the outlet 82, and the tearing line 10a of the broken line is preheated and the tearing notch 10b is provided in advance. When the automatic liquid stop bag with the bend is filled with liquid and closed, a completely sealed liquid storage bag is formed. When used, it is torn from 10b, that is, the outlet 82 of the endometrial discharge channel 8 is exposed, and the pressure is applied to the bag body, and the pressure causes the water level of the liquid 9 in the bag to rise, so that the outer film expands outward, and the row is naturally opened. The inlet 81 of the channel 8 allows the liquid to follow the inlet 81 of the discharge channel 8 through the bend 84 and exit to the outlet 82. When the external pressure is released, the liquid 9 instantaneously falls back from the curved portion 84 to the stocker 4. This fallback produces a reaction force that causes the inner membranes 1a and 1b of the discharge channel 8 to be attracted together by suction, forming a discharge effect of the discharge channel 8. Further, since the bent portion 84 is provided, the inner and inner films 1a and 1b are more strongly attracted to the curved portion 84, and the locking effect is enhanced. If the automatic liquid stop bag with the curved portion is dumped, the liquid 9 itself cannot pull open the outer film 2a and 2b due to no external pressure, so the inlet 81 of the discharge channel 8 cannot be opened, so the liquid 9 does not form when the dump is formed. The effect of flowing out of the bag further enhances the practical use of the automatic liquid stop bag with the curved portion.

Another embodiment of the first embodiment of the automatic liquid stop bag with a curved portion: the two intima are horizontally arranged and have multiple inlets

In the first embodiment, the inner membranes 1a and 1b are horizontally sandwiched between the outer membranes 2a and 2b, and the storage zone 4, the filling zone 5, the discharge zone 6 are formed by heat sealing, and the discharge zone 6 is formed. The discharge passage 8 of the double inlet 81 and the at least one curved portion 84 are provided with a tearing portion 10. The outlet 81 of the discharge channel 8 can be provided not only on the side but also on the middle. In this case it is located in the middle. The tearing portion 10 is also fitted to the upper portion. See Figures 2C and 2D for details.

After the liquid 9 has flowed from the filling zone 5 to the storage zone 4, the filling zone 5 is closed with a closing element. As shown in FIG. 4A and FIG. 4B, when used, the two outer membranes 2a and 2b of the storage zone 4 are pressed and forced, and when the compressed liquid 9 flows to the first side 1d of the two inner membranes 1a and 1b, the first The two outer membranes 2a and 2b of the side 1d are pulled outward with the outer membranes 2a and 2b, and the inlet 81 of the discharge channel 8 is automatically opened, so that the liquid 9 flows from the inlet 81 into the discharge channel 8, along the discharge channel. The curved portion of 8 flows and flows out through the outlet 82.

3A is a second embodiment of the present invention: an intima vertical stop structure

The upper portion of the four membranes is simultaneously heat-sealed by the two narrow inner membranes placed vertically on the side of the outer membrane, and the heat seal lines 3b, 3c, 3d, 3f form the liquid-capable bag body 1, and The bag body is divided into a filling zone 5, a discharge zone 8, a storage zone 4, a heat seal line 3e, a discharge channel formed in the discharge zone, and at least an inlet 81, a curved portion 84 and an outlet 82. Wherein, when the inlet 81 and the outlet 82 are heat-sealed, the inner surface of the inner film 1a, 1b is coated with a baffle or a heat-resistant sealing material is applied in advance, so that the inner surface of the inner film 1a and 1b does not follow the heat sealing. However, the two outer membranes 2a, 1b of the inner membranes 1a, 1b are heat sealed to each other. At the same time, at the outer film of the outlet 82, a tearing portion having a tear line 10a and a tearable notch 10b are provided, and when the filling liquid is completed, the filling portion 3a is heat-sealed into a completely closed liquid bag. When it is used, it can be torn by the tear opening 10b, so that the outlet 82 can be exposed for convenient use. Further, in order to enhance the prevention of the outflow of the liquid stored during the pouring, a heat seal joint may be provided in the discharge passage curved portion 84 as a railing 85 to enhance the flow stop effect. The vertical two inner membranes 1a, 1b can also be disposed in the middle section of the four membranes 1a, 1b, 2a, 2b, and the discharge zone has the same structure as that of the upper section, that is, still has the discharge material. At least the inlet 81, the curved portion 84, the outlet 82, and the predetermined tearing portion 10.

Please refer to FIG. 3B, which is a schematic view of another embodiment of the second embodiment of the present invention: a discharge channel having double inlets and multiple curved passages.

The present invention also proposes that a dual inlet is provided in the vertical flow stop structure to enhance the rate of liquid outflow in the reservoir. That is, two vertical inner membranes are disposed on one side of the outer membrane, and 3c, 3b, 3d and 3f are heat-sealed to form a liquid storage bag 1 and a filling area 5 and a storage area in the bag. 4, discharge area 6, and the inner surface of the inner membrane is intended to be the inlet, the heat-resistant material is applied at the outlet or the flap is applied during heat sealing, so that the inner surface of the inner membrane of the area is not sealed inside. However, the inner membrane is applied with 3f to form a double inlet, that is, an upper inlet 81 and a lower inlet 81' and a discharge passage 84. There are a plurality of bends in the discharge passage, and finally merge into an outlet 82, and tearing the heat seal line 10a and tearing the notch 10b at the predetermined outlet of the second outer film. When the liquid bag is filled with liquid, it is heat sealed by 3a and closed to form a completely closed space. In actual use, it is directly torn from the notch 10b, even if the outlets 82 of the inner membranes 1a and 1b are exposed, and the pressure is applied to the outer envelope of the second outer membrane, the position of the liquid rises, and the outer membrane without pressure is pulled apart. The inlet is followed by the opened outer membrane, so that the inlet 82 is naturally pulled open to allow the liquid 9 to flow out toward the discharge passage 8 toward the outlet 82. When the pressure is removed, the liquid 9 flows back to the discharge channel 8 to generate a reaction force so that the inner membranes 1a and 1b of the discharge channel 8 attract each other to form a lock, that is, the purpose of stopping the flow is achieved.

In order to control the liquid bag 1 to be squeezed by an external force, the liquid in the bag rises, the water level is higher than 3f, and the filling section produces an ineffective pressure phenomenon. After the filling is completed, in addition to the heat seal 3a, a heat seal is added near the 3f contour so that the liquid water level rises not higher than the inlet of the discharge channel to optimize the liquid discharge.

Referring to Fig. 6, there is shown a third embodiment of the automatic liquid flow restricting bag with a curved portion of the present invention.

The greatest difference between this embodiment and the first embodiment lies in the structure of the two inner films 1a and 1b. In this embodiment, one of the two inner membranes 1a and 1b protrudes from the two outer membranes 2a and 2b to expose the two outer membranes 2a and 2b, and the outlet 82 of the discharge channel 8 is located in the two outer membranes 2a and 2b. outer.

Referring to Fig. 7, there is shown a fourth embodiment of the automatic liquid flow restricting bag with a curved portion of the present invention.

The greatest difference between this embodiment and the first embodiment lies in the structure of the two inner films 1a and 1b. In this embodiment, the two inner membranes 1a and 1b are changed into shorter small pieces, and a small piece composed of the two inner membranes 1a and 1b is replaced by the previous horizontal or vertical type in the outer membrane 2a. The inner membranes 1a and 1b of 2b. The small body and the two outer films 2a and 2b form the bag body 1 by heat sealing 3c, 3b, and 3d, and the heat sealing wire 3e, the heat sealing wire at the second side 1e, and the heat sealing wire 3f generate the discharge channel 8. The inlet 81 and the outlet 82 which are not in contact with each other in the inner membrane and the curved portion 84 which generates the discharge channel 8, the rail 85 of the curved portion 84, and the broken line 10a and the notch 10b of the heat-sealing tearing portion. When the automatic liquid stop bag having the bent portion is filled, the filling region 5 is closed by the heat seal line 3a. When used, it is torn by the notch 10b. It is expected that the outer film dashed line can expose the discharge port outlet 82, so as to squeezing out the liquid in the bag and relaxing the liquid to stop automatically. When dumping, the inlet 81 of the discharge channel 8 cannot be opened due to no external pressure, and the inner membranes 1a and 1b of the curved portion in the discharge channel 8 still suck each other to form a closed state, thereby preventing body fluid circulation in the bag. The material channel flows out.

The invention can not only adjust the flow rate of the liquid in the bag by pressure at random, but also release the pressure, the reaction force of the discharge channel 8 causes the inner membrane of the bending portion 84 to adsorb each other to prevent the outside air from entering, so that the air in the bag is forever In an insufficient state. Hypoxia can make the liquid bag fill the liquid food, it can prolong the oxidation time, and it will bring the shelf life longer than the normal bottle.

Referring to the eighth embodiment, a fifth embodiment of the automatic liquid flow restricting bag with a curved portion of the present invention is shown.

The biggest difference between this embodiment and the first embodiment is that the two inner membranes 1a and 1b are not vertically or horizontally sandwiched between the outer membranes 2a and 2b, but instead the inner membranes 1a and 2b of the second outer membranes 2a and 2b. 1b is expanded and self-sealed to form a fillable inner bag 4' which is combined with the upper outer layers 2a, 2b, and the lower part is independent. The four sheets are still heat-sealed 3e, 3f together in the upper section to form the filling zone 5 with the inner bag 4' and the discharge channel 8, and the inner faces of the two inner films 1a and 1b are not in contact but different from each other. The inlet 81 and the outlet 82 of the membrane 2a and 2b are connected to the curved portion 84 in the discharge channel 8, and the rail 85 in the curved portion 84. In order to prevent the external force from pressing the inner bag body fluid to cause the 3f to break, the heat seal range and streamline can be enlarged at the 3f boundary to form a dike that reduces the air resistance, so that the fluid in the bag flows out 81 to reduce the resistance.

In addition, in this case, the outer membrane can be separated from the inner membrane pocket in the lower section, which can be heat sealed into a separate inner folding pocket or heat-sealed into an independent two-piece body, which can be used as a support zone for the inner membrane inner bag 4'. 41. The invention can be placed in a standing manner.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

1. . . Automatic liquid stop bag with curved part

1a/1b. . . Endometrium

1d. . . First side

1e. . . Second side

2a/2b. . . Outer membrane

3a/3b/3c/3d/3e/3f. . . Heat seal line

3h. . . Zipper

4. . . Storage area

4’. . . Inner bag

41. . . Support area

5. . . Filled area

6. . . Drainage area

8. . . Discharge channel

81. . . Entrance

82. . . Export

84. . . Bending

85. . . railing

9. . . liquid

10. . . Ripped part

10a. . . Tear open line

10b. . . gap

Fig. 1A is a schematic view showing a first embodiment of the present invention.

Fig. 1B is a schematic view showing the zipper of the first embodiment of the present invention.

Fig. 2A is a schematic view showing the first embodiment of the present invention before tearing.

Figure 2B is a schematic view of the first embodiment of the present invention after tearing.

2C is a schematic view of another embodiment of the first embodiment of the present invention.

2D is a schematic view of another embodiment of the first embodiment of the present invention.

Figure 3A is a schematic view of a second embodiment of the present invention.

FIG. 3B is a schematic view showing another embodiment of the second embodiment of the present invention.

Figure 4 is a schematic view of the first embodiment of the present invention before opening the inlet.

Figure 5 is a schematic view of the first embodiment of the present invention after the inlet is opened.

Figure 6 is a schematic view of a third embodiment of the present invention.

Figure 7 is a schematic view of a fourth embodiment of the present invention.

Figure 8 is a schematic view of a fifth embodiment of the present invention.

1. . . Automatic liquid stop bag with curved part

1a/1b. . . Secondary endometrium

1d. . . First side

1e. . . Second side

2a/2b. . . Second outer membrane

3a/3b/3c/3d/3e/3f. . . Heat seal line

4. . . Storage area

5. . . Filled area

6. . . Drainage area

8. . . Discharge channel

81. . . Entrance

82. . . Export

84. . . Bending

85. . . node

10. . . Ripped part

10a. . . Tear open line

10b. . . gap

Claims (14)

An automatic liquid flow-stopping bag with a curved portion, comprising: two outer membranes; two inner membranes stacked on top of each other between two outer membranes, a pre-positioned sheet or pre-coated with a heat-resistant material; a storage area, which is formed between the two outer membranes for storing a liquid; a discharge channel, which is formed between the two inner membranes, and includes at least one inlet, a bent portion and an outlet, wherein the two inner membranes are respectively heat-sealed with the outer film, the curved portion connecting the inlet and the outlet; and a tearing portion located at the outlet of the discharge channel, after being torn Exposing the outlet of the discharge channel; characterized in that: the storage area is pressed by an external force to pressurize the liquid to rise, so that the two outer membranes are hydraulically pulled outward to automatically open the discharge guide channel The inlet, the liquid follows the curved portion of the discharge passage to the outlet; when the pressure is released, the liquid returns to the reaction suction of the storage region, so that the inner membrane of the curved portion of the discharge passage Adsorbed by the reaction force to close the discharge channel, wherein when the external pressure is released, the liquid is instantaneous A reaction force generated when the bending portion from the storage area down to feed, the discharge passage formed in the locking effect, because the curved portion dicarboxylic endometrial adsorbed at the bend, resulting in strengthening the locking effect. The automatic liquid flow stop bag having the bent portion of claim 1 further comprising: a filling zone between the two outer membranes and disposed on one side of the storage zone for filling the liquid to the storage material a region, after the liquid is filled into the storage region, the filling region is closed by a sealing member followed by the two outer membranes; and a discharge region is located between the two outer membranes and disposed in the storage region On one side, the discharge zone is provided with the filling zone. An automatic liquid flow stop bag having a bent portion according to claim 2, wherein the closing member is a heat seal line or a zipper formed by heat sealing means. An automatic liquid flow stop bag having a bent portion according to claim 2, wherein one side of the two inner membranes protrudes from the discharge area such that one side of the two inner membranes is located in the filling area or the storage area. An automatic liquid flow stop bag having a bent portion according to claim 1, wherein the bent portion is formed by heat sealing followed by the inner film. An automatic liquid flow stop bag having a bent portion according to claim 5, wherein the discharge passage is formed by simultaneous heat sealing followed by the inner film and the outer film. An automatic liquid flow stop bag having a bent portion according to claim 5, wherein the discharge passage is formed by simultaneous heat sealing followed by the inner film and a piece of the outer film. An automatic liquid flow stop bag having a bent portion according to claim 1, wherein the inner film and the outer film are simultaneously heat sealed to form the inlet, the bent portion and the outlet of the discharge channel. An automatic liquid flow bag having a bent portion according to claim 1, further comprising: a plurality of rails located in the discharge passage to prevent the liquid from flowing back from the discharge passage. An automatic liquid flow stop bag having a bent portion according to claim 1, wherein one of the two inner membranes protrudes from the outer membrane to expose the outer membrane, and the outlet of the discharge passage is located outside the outer membrane. An automatic liquid flow stop bag having a bent portion according to claim 1, further comprising: a support region formed by heat sealing means followed by the two outer films for supporting the storage region. An automatic liquid flow stop bag having a curved portion according to claim 1, further comprising: an inner bag formed by heat sealing followed by the inner film. An automatic liquid flow stop bag having a bent portion according to claim 1, wherein the discharge channel is formed between the two inner membranes by heat sealing means followed by the two inner membranes; the storage area is followed by heat sealing means An outer membrane is formed between the outer membranes. An automatic liquid flow stop bag having a bent portion according to claim 1, wherein a baffle is pre-placed between the two inner films or a heat-resistant material is pre-coated, and the baffle is placed or coated with the heat-resistant material, thereby being heat-sealed. The time is not followed to form the inlet and the outlet.