JP2011068388A - Flexible bag-like container with pump dispenser - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible bag-like container with a pump dispenser which does not cause a large quantity of the contents to remain due to the close adhesion of the inner face of a bag in the middle of pouring. <P>SOLUTION: The flexible bag-like container includes the pump dispenser having a discharge pump constituted not to inhale air from the outside and a flexible bag that is a housing for a fluid material. Rib members are adhered to the inner surface of the flexible bag, and upper ends of the rib members face a suction port of the pump. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a flexible bag-like container with a pump dispenser.

As containers used for liquid detergents, cosmetics, seasonings and the like, discharge containers are used in which contents are stored in a synthetic resin bottle and a trigger type or pump type discharge means is attached to the mouth. Such containers are generally often disposable, but in recent years, from the viewpoint of resource saving, such as reducing the amount of resin used in the container, from the problem of transport and storage of the container before filling the contents, or from the contents From the viewpoint of waste problems such as simplifying the disposal of containers after they are used up, a container in which the internal solution is stored in a flexible bag-like container and a discharge means such as a pump is attached to this bag-like container is put into practical use. Has been.
As a means to take out all the solution in the container, a dip tube is provided from the lower end of the discharge means such as a pump toward the bottom of the container, and even if the amount of the content liquid decreases, The remaining content liquid can be sucked up and discharged.
In addition, when the content liquid is stored in a flexible bag, by using a gap holding member instead of the dip tube, even if the content is reduced and the bag shrinks and the inner surfaces of the bag are in close contact with each other, It has been proposed to leave a passage connecting the bottom and the suction port of the pump.

For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 8-310575), a peripheral wall outer surface and a bottom wall lower surface of a cylinder suspended in a container body are formed in an uneven surface, and the periphery of a suction port drilled in the center of the cylinder bottom wall is disclosed. A liquid extraction pump in which the upper end is connected to the bottom surface of the cylinder bottom wall, the lower end is suspended from the bottom of the liquid-filled bag, and a gap holder for preventing the suction port from being blocked by the liquid-filled bag is formed integrally with the cylinder Is disclosed.
In Patent Document 2 (Japanese Utility Model Publication No. 6-35981), four substantially triangular folds in which inner containers extend in directions orthogonal to each other are communicated with each other at the center and folds adjacent to each other. It consists of a bag-like container having a shape in which the right-angled part of the part is positioned upside down, and the contents in the inner container are obtained by folding the folding part in four directions orthogonal to each other when shrinking to present a flat cross-like shrinkage shape A dispensing container is disclosed in which no contents remain and all contents can be poured out.
Patent Document 3 (Japanese Patent Application Laid-Open No. 2002-46754) discloses a packaging bag comprising a bag body formed by heat-sealing a plastic film and a pump fixed to the opening of the bag body. By providing a tunnel-like bulge that communicates with the bottom, the contents can be easily removed to the end by preventing the inner layers of the bag from sticking to each other even when the content is reduced. A pouch with a pump dispenser that can be removed is disclosed.
Patent Document 4 (Japanese Patent Application Laid-Open No. 2004-51224) is a container including a spout portion and a liquid storage bag, and an outflow groove is formed on the inner surface of the liquid storage bag. A container comprising a spout part and a liquid storage bag, wherein the thickness of the liquid storage bag gradually decreases toward the lower end, thereby adopting a liquid storage bag of the bag-like container. A bag-like container is disclosed in which the thickness is gradually reduced toward the lower end, or a groove for forming an outflow passage is provided on the inner surface of the liquid storage bag to secure a liquid flow path and to reduce the remaining amount of liquid content. Yes.
In Patent Document 5 (Japanese Patent No. 4250037), a cylindrical flexible inner container is inserted into a cylindrical outer container, and the inner volume decreases as the pump is dispensed. A container is disclosed which is devised so that it is deformed into a cross-shaped cross-section when in contact with the container and a suction space remains in the center.

JP-A-8-310575 No. 6-35981 JP 2002-46754 A JP 2004-51224 A Japanese Patent No. 4250037

The present invention is a container of a type that is poured out from a flexible bag container filled with a viscous liquid agent such as a shampoo or a conditioner using a pump. The aim is to develop a bag-like container that can be reduced.
As a solution, the conventional techniques as described above have been proposed. However, in the case of a dip tube, the inner surfaces of the bags are in close contact with each other near the opening at the end of the tube, and smooth extraction cannot be performed, or the dip tube is bent. The remaining amount may occur because the bottom of the bag is not reached. The means for attaching the gap forming member to the lower part of the pump is limited to a member that extends thinly because it is inserted from the bag mouth, so there is a risk that the bag inner surface will be in close contact with a wide bag. There is a limit to application to bag containers that contain viscous materials with a relatively large volume such as conditioners.
The method of forming the groove by deforming the resin film main body of the bag is limited in the resin material or the laminated structure of the film that can form the groove by deforming the film material forming the bag into irregularities. In a film material that is flexible and deforms by pump suction, the groove is crushed. If a hard sheet material is used, the shape of the groove can be maintained, but the flexibility of the container is impaired. In addition, when performing surface printing, the unevenness is an obstacle, so it is not suitable.
It is an object of the present invention to provide a flexible bag-like container with a pump dispenser in which the inner surface of the bag is in close contact with each other and does not leave a large amount of remaining by a technique different from these conventional techniques. To do.

That is, the main configuration of the present invention is as follows.
1. A flexible bag-like container with a pump dispenser having a pump dispenser having a discharge pump having a structure that does not suck air from the outside and a flexible bag being a fluid container,
A flexible bag-like container with a pump dispenser, wherein a rib member is affixed to an inner surface of a flexible bag, and an upper end of the rib member faces a suction port of a pump.
2. The rib member is affixed to the inner surface of the flexible bag so as to spread outwardly, and the downward spread is formed larger than the diameter of the spout for mounting the pump dispenser. The flexible bag-like container with a pump dispenser of description.
3. 1. The end-spreading rib member is composed of an extending member extending in the vertical direction and a side lower member extending in the “C” -shaped direction. The flexible bag-like container with a pump dispenser of description.
4). The end-spreading rib member is composed of an extending member extending in the vertical direction, a side lower member extending in the “C” -shaped direction, and a horizontal member extending in the horizontal direction. The flexible bag-like container with a pump dispenser of description.
5). The flexible bag-like container with a pump dispenser according to claim 1, wherein a groove is provided on the rib member.
6). The flexible bag is composed of a main body formed into a bag shape by heat sealing a plastic film with a rib member attached thereto, and a spout fixed to the opening of the main body.
The pump dispenser is attached to the spout. ~ 5. A flexible bag-like container with a pump dispenser according to any one of the above.
7). The shape of the main body of the flexible bag is any one of a lateral gusset pouch shape, a three-side seal shape, and a standing pouch shape. The flexible bag-like container with a pump dispenser of description.
8). 1. The fluid to be stored is a viscous liquid. ~ 7. A flexible bag-like container with a pump dispenser according to any one of the above.
9. 7. The viscous liquid is shampoo or conditioner The flexible bag-like container with a pump dispenser of description.
10. The final total discharged amount is 94% by mass or more. Or 9. The flexible bag-like container with a pump dispenser of description.

The flexible bag-like container with a pump dispenser of the present invention can smoothly carry out the pouring operation without interfering with the inner surface of the bag due to the close contact between the inner surfaces of the pouring operation. Loss can be reduced.
Since the surface of the bag body portion of the flexible bag-like container with a pump dispenser of the present invention is smooth, display can be performed in the same manner as in conventional printing.
The arrangement shape of the rib member can be freely set according to the internal solution. In particular, for viscous materials such as shampoos, by arranging them in a divergent shape, smooth discharge can be achieved, and the amount of remaining suction can be reduced.
The present invention improves the discharge yield of the internal solution stored in a flexible bag-like container equipped with one pump, and realizes a reduction in capacity of the packaging container after use.

General example of flexible bag-like container with pump dispenser Example of suction failure occurrence status Examples of rib members used in the present invention Discharge state diagram of flexible bag-like container with pump dispenser of Example 1 Reference example of pump with ring Discharge state diagram of flexible bag-like container with pump dispenser of Example 2

The present invention relates to a flexible bag-like container with a pump dispenser, and can be discharged without closing the pump's mouth even if it shrinks and the remaining amount of content is reduced by pumping. Thus, a flexible bag-like container capable of reducing the final remaining amount is provided.
The pump used in the present invention is a discharge pump having a structure that functions only in the direction of discharging the fluid and does not suck air from the outside of the container. By using this discharge one-way pump, the flexible container gradually contracts, so that the liquid content can be poured out. In addition, when using a pump that restores the container by inhaling air, it is necessary to provide a dip tube etc. to always suction from the bottom, and the internal solution that touched the inhaled air can be altered by oxidation. There is sex. In particular, a solution in which the concentration of stimulating substances such as preservatives is suppressed is not preferable because contamination by bacteria may occur.

The flexible bag is a plastic film container generally called a pouch. The plastic film is a laminated type generally used for pouches. A bag-like container is formed by heat-sealing a film sheet in which a plurality of thermoplastic resins or the like having functions such as gas barrier properties are laminated. The pouch shape is typically a standing type, a gusset type, or a three-way seal type. The standing type has a wide bottom and can stand on its own. The gusset type has gussets on both sides. The three-side seal has a V-shaped heat seal at the bottom. The amount of discharge is also affected by the shape of the pouch. There is a tendency for the remaining discharge amount to decrease in the order of standing type, three-way seal type, and gusset type. In the standing type, there is 14% remaining in water.
A base called a spout is provided on the upper side of the pouch. The spout is filled with the internal solution, and then a pump dispenser is attached.
The pouch of the present invention is formed into a bag shape by heat-sealing after attaching a rib member to a film sheet. The method for attaching the rib member to the film is thermocompression bonding. Therefore, a thermoplastic synthetic resin is suitable for the film material on the surface to which the rib member is attached and the material of the rib member. They are preferably made of the same material as each other, such as LLDPE and LDPE. The position where the rib member is pasted is a position where the upper end of the rib member is aligned with the position facing the suction port of the pump.

  One to a plurality of rib members can be arranged. The arrangement is determined by the viscosity of the internal solution. The basic shape of the arrangement may be a shape in which one is extended downward, a shape in which the shape is extended in a C shape, or a shape in which the shape is extended in the horizontal direction, and these shapes may be combined. When extending horizontally or horizontally, it can be wider than the spout diameter. Even when the width of the pouch is large, the pouch can be extended sufficiently. The rib member has a certain thickness with a surface to be attached to the pouch film as a flat surface. For example, it has a semicircular cross section. The size can be determined by the size of the bag, the viscosity of the internal solution, and the like. In a capacity of about 200 to 300 ml, it is suitable that the width is 2 to 10 mm, the thickness is 1 to 2 mm, and the length is close to the base and side. Moreover, you may give the groove | channel used as the flow path of a content liquid in the non-sticking surface of a rib member. It is sufficient that the rib member is attached to either one of the inner surfaces of the bag. It can be provided on both sides.

The inner solution to be filled is not particularly limited as long as it is a liquid, but is particularly suitable even if it is a viscous liquid because it can be sufficiently discharged. For example, it is suitable for liquids such as shampoos and conditioners. The volume to be filled is suitably 150 to 400 ml, which is usually used.
The present invention eliminates the adverse effect that the inner surface of the bag comes into close contact with each other and the flow path of the liquid supplied to the suction port of the pump is blocked as the inner solution is discharged by the pump, and the gap formed by the rib member is eliminated. In addition, a liquid flow path can be secured. Thereby, the discharge remaining amount can be reduced. For example, it is possible to discharge 94% by mass or more of a viscous liquid such as a shampoo or a conditioner. The remaining amount that is difficult to discharge is 6% by mass or less.

FIG. 1 shows a filling state of a general flexible bag-like container with a pump dispenser. If the internal solution is discharged by the pump from this state, a discharge failure as shown in FIG. 2 occurs. This obstacle is caused by the fact that the inner surfaces of the bags are in close contact with each other in the vicinity of the suction port of the pump, and the remaining liquid cannot reach the suction port. In the present invention, a rib member is attached to the inner surface of the bag to secure a liquid introduction path to the pump suction port, thereby overcoming the obstacle for discharging the internal solution. FIG. 3 shows an example of the shape of the rib member used in the present invention.
The rib members shown in FIG. 3 are (a) a single “I” shape, (b) a “↑” shape, (c) a “wood” shape, (d) a “two-step oblique side” shape, (e ) An example of a “double arrow” shape is shown. The “I” form is effective in such a case because even a low viscosity liquid such as water may cause a discharge failure in a standing type pouch. The “↑” and “wood” shapes are effective for preventing discharge problems of highly viscous liquids. Since the spread in the oblique or horizontal direction is not limited by the diameter of the spout, it can be applied to a wide flexible bag. As the capacity of the container increases, it can be dealt with by increasing the number of hypotenuses.
The rib member is attached in a sheet state before heat sealing, and then the edge is heat sealed to complete the bag. The spout is attached when the upper side is heat sealed. Since the pump member can be a member that is normally used, there is no need for special processing. In addition, since it is not necessary to attach the linear portion and bond the hypotenuse, the bonding operation can be performed similarly even if the shape of the rib member becomes complicated.

  The example of the last state which discharged | emitted the inner solution using the flexible bag-shaped container with a pump dispenser of this invention is shown in FIG. It is observed that almost all of the inner solution is discharged and the rib member is raised in a rib shape.

[Preliminary test]
Using a normal 200 ml capacity pouch of a standing type, a gusset type, and a three-way seal type, water, shampoo and conditioner were filled and a discharge state confirmation test was performed at room temperature. The viscosity of the shampoo is 600 mPa · s, and the viscosity of the conditioner is 20000 mPa · s. The results are shown in Table 1. The filling body is shown in FIG. 1, and the state after discharge is shown in FIG.
The test shows the remaining amount after continuous discharge and the remaining amount when discharged again 30 minutes after continuous discharge (final discharge remaining amount after 30 minutes).

As a result, even with a low viscosity such as water, the remaining amount of 14% by mass was generated in the standing type, and the remaining amount was 5% by mass or less in the gusset type and the three-way seal. As a result, it can be seen that the remaining amount of discharge (discharge failure) is affected by the shape of the pouch bag.
With regard to the viscosity of the conditioner used, it has been clarified that even with a small gusset type, 25% by mass or more remains in continuous discharge, and 20% by mass or more remains after discharge after 30 minutes without being discharged.

Using a gusset type, a discharge test was performed using a pouch container in which rib members were attached in an “I” shape and a “wood” shape. The results are shown in Table 2. A case where no rib member is used is also shown as a comparative example.
The rib member has a kamaboko-shaped cross section with a width of 6.0 mm and a thickness of 2.0 mm. The length of the “I” shape is 73 mm, the horizontal direction of the “wood” shape is 50 mm, and the hypotenuse is 30 mm on both sides. It is. The inner diameter of the spout is 18 mm. The inner size of the bag is 90 mm wide and 115 mm long. The inner dimension is 55 mm when the gusset is folded. Since the suction port of the pump is located 76 mm from the bottom of the bag, the upper end of the rib member is set to 75 mm from the bottom of the bag. In the present embodiment, the rib members are symmetrical.

With the shampoo, the continuous discharge remaining amount was less than 5% by mass for both the “I” type and the “wood” type.
In the conditioner, the continuous discharge remaining amount can be about 8% by mass for the “I” type and 5.4% by mass for the “wood” type, which is 1/3 compared to the case where the rib member is not attached. It was possible to reduce to 1/4. The remaining discharge amount after 30 minutes could be less than 6% by mass, and the total discharge amount could be 96% by mass or more. FIG. 4 shows the conditioner discharged state of the “wood” rib container.

[Reference example]
A model with a ring attached to the lower part of the suction port of the pump was made and tested. This ring is sized to be inserted from the spout. The discharge state is shown in FIG. The results are shown in Table 3. The basic shape of the container is the same as in the first embodiment.
The shampoo remained at 5.4% by mass, and the conditioner remained at 7.4% by mass. The result was slightly lower than when the “I” -shaped rib member was attached.

  Using a gusset type container having a capacity of 300 ml, a discharge test was performed using a pouch container in which rib members were attached in an “I” shape and a “two-step oblique side” shape. The results are shown in Table 4. A case where no rib member is used is also shown as a comparative example. The cross-sectional shape of the rib member is the same as in the first embodiment. The “I” shape is a straight line. The “two-stage hypotenuse” shape is “wood” as a basic form, and is provided with hypotenuse materials in two stages.

In the shampoo, the remaining amount in the container is about 12 to 20% without the ribs, whereas the continuous discharge remaining amount can be less than 5% by mass in both the “I” type and the “two-stage oblique side” type.
With the conditioner, 30% or more remains in the container without ribs, whereas the continuous discharge remaining amount is about 8% by mass or more for the “I” type, and less than 5% by mass for the “two-stage hypotenuse” type. We were able to. Compared to the case where the rib member is not attached, the “two-step oblique side” shape can be reduced to about ８, and the total discharge amount can be 95% by mass or more. FIG. 6 shows the conditioner discharged state of the “two-stage oblique side” rib container.
Therefore, when a container with a large capacity is used, a sufficient discharge amount can be secured and the remaining amount can be reduced by increasing the number of steps on the hypotenuse.

Claims (10)

A flexible bag-like container with a pump dispenser having a pump dispenser having a discharge pump having a structure that does not suck air from the outside and a flexible bag being a fluid container,
A flexible bag-like container with a pump dispenser, wherein a rib member is affixed to an inner surface of a flexible bag, and an upper end of the rib member faces a suction port of a pump.   2. The pump dispenser according to claim 1, wherein the rib member is affixed to the inner surface of the flexible bag so as to spread outwardly, and the downward spread is formed larger than the diameter of the spout for mounting the pump dispenser. A flexible bag-like container.   3. A flexible bag-like container with a pump dispenser according to claim 2, wherein the end-spreading rib member is composed of an extending member extending in the vertical direction and a side lower member extending in the "C" direction.   3. The pump dispenser according to claim 2, wherein the end-spreading rib member is composed of an extending member extending in the vertical direction, a side lower member extending in the “C” -shaped direction, and a horizontal member extending in the horizontal direction. A flexible bag-like container.   The flexible bag-like container with a pump dispenser according to claim 1, wherein a groove is provided on the rib member. The flexible bag is composed of a main body formed into a bag shape by heat sealing a plastic film with a rib member attached thereto, and a spout fixed to the opening of the main body.
The flexible bag-like container with a pump dispenser according to any one of claims 1 to 5, wherein the pump dispenser is attached to the spout.   The flexible bag-like container with a pump dispenser according to claim 6, wherein the shape of the main body of the flexible bag is any one of a lateral gusset pouch shape, a three-side seal shape, and a standing pouch shape.   The flexible bag-like container with a pump dispenser according to any one of claims 1 to 7, wherein the fluid to be stored is a viscous liquid.   The flexible bag-like container with a pump dispenser according to claim 8, wherein the viscous liquid is a shampoo or a conditioner.   10. The flexible bag-like container with a pump dispenser according to claim 8 or 9, wherein the final total discharge amount is 94% by mass or more.