JP2000217685A - Aqueous liquid housed bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous liquid housed bag which can softly fit a human body with a human head part sitting better without the propagation of vibration to make it suitable for water pillows, water beds or the like. SOLUTION: Laminated soft plastic sheets are fused along the peripheries thereof to form a bag 1 which houses an aqueous liquid and is sealed up. The inside of the bag is sectioned into a plurality of chambers 7 by melt bands 5 arranged in a network produced by fusing sheets facing each other on a contact surface and the plurality of chamber 7 are made to communicate between adjacent ones 7 through a liquid passage. The liquid passage is formed with discontinued parts arranged on each melt band 5. Thus, when any chamber 7 is pressurized from outside, the spillage of the liquid from the chamber 7 is delayed by a resistance in the fluid passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aqueous liquid storage bag, and more particularly, to a bag in which the interior is divided into a plurality of chambers in a mesh pattern, and the movement of the aqueous liquid between the chambers is suppressed. The present invention relates to an aqueous liquid storage bag for use as a water pillow, a water bed, or the like, having a pillow.

[0002]

2. Description of the Related Art Products that are used as beds and pillows, such as water beds and water pillows, are well known. However, currently available water beds are quite expensive. Moreover, since they are thick and therefore heavy when filled with water, they require a sturdy floor for installation, and are large and time-consuming to install. Because of its weight, it cannot be easily moved unless the water is drained, and it becomes troublesome when changing the design of the room. Therefore,
Although water beds are considered favorable from a health point of view, they have not yet become widespread. On the other hand, Japanese Patent Application Laid-Open No. 6-245849 discloses a mattress type water bed surrounded by an air tube, in which a method of pouring water into bags partitioned in parallel in a vertical direction is adopted. I have. However, in such a structure, the pressure or vibration applied to one location is immediately transmitted along the partition, so if, for example, the legs are rearranged while lying down, the vibration applied to the water bed will be immediately applied to the head. It will be transmitted, which is extremely undesirable.

On the other hand, water pillows are usually used to cool a patient's head when high heat is generated mainly due to a cold or the like. However, when the temperature is high such as in summer, even a healthy person can easily sleep well without air conditioning by using a water pillow. However,
Conventionally, water pillows on the market are made of relatively hard materials, which are far from those that deform and conform to the shape of the human head and receive the head softly. Poor sitting. Furthermore, various types of water pillows having vertical screen-like partitions inside are known (Japanese Utility Model Publication No. 59-29706, Japanese Utility Model Application Laid-Open No. 59-16621,
No. 61-6907 and No. 5-80372).
Since the vertically rising partition hits the head, the usability is worse. Also, the structure of a water pillow made of a plastic molded product having a fixed shape is known (utility model registration No. 3012935), but it is still too hard for the head and far from a comfortable feeling of use. In addition, the actual opening 61-1072
No. 6 discloses a water pillow in which the interior is divided into two chambers. However, in other respects, the water pillow does not come out of a conventional water pillow. Poor sitting.

The present invention eliminates the drawbacks of conventional water beds and water pillows at the same time, and can supply large-sized products at a low cost, and can be installed and moved in one place without any trouble. It can be used as a waterbed that does not propagate any vibrations to the other and that fits more softly on the body, and for small ones, the head sits well and fits the shape of the head It is an object of the present invention to provide an aqueous liquid storage bag that can be used as a water pillow that can be deformed to receive a soft head.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a sealed bag containing an aqueous liquid, the bag being formed by fusing together superposed soft plastic sheets along the periphery. The interior is divided into a plurality of chambers by a fusion band arranged in a mesh shape formed by fusing the facing plastic sheets together at their contact surfaces, and each of the plurality of chambers is formed of adjacent chambers. Communicating with at least one via a liquid flow path, wherein the liquid flow path is formed by providing a discontinuity in the fusion zone to create a limited gap, Provided is an aqueous liquid storage bag, wherein an outflow of the aqueous liquid from the chamber to an adjacent communicating chamber when the chamber is pressurized from the outside is delayed by resistance due to the fluid flow path. I do. The aqueous liquid storage bag of the present invention may be completely closed, or may further include at least one openable / closable port for taking in / out the aqueous liquid.

[0006]

That is, although the aqueous liquid storage bag of the present invention is a bag which spreads in the plane direction as a whole, it is arranged in a mesh-like manner by fusing opposed plastic sheets together at their contact surfaces. The interior is divided into a number of chambers by banding, and the cohesive zone formed in this way completely isolates the chambers in the horizontal direction, completely shutting off the vibration applied to the water inside each room it can. Therefore, there is an advantage that the vibration applied to one location of the bag is attenuated and eliminated in the room at that location, and does not propagate to other locations.

Further, since each chamber is not completely independent, the aqueous liquid in that chamber can be transferred to another chamber according to the pressure applied to the chamber from above, and the pressure can be released to an appropriate degree. For this reason, there is also an advantage that the body is not excessively partially compressed in spite of being divided into the room.

Furthermore, since the liquid communication between the chambers is constituted by a liquid flow path having a limited gap, the aqueous liquid in the room flows through the flow path and moves to an adjacent chamber. In this case, the flow is delayed due to the resistance. Therefore, when pressure is applied to the chamber from above, the transfer of the aqueous liquid from that chamber to the adjacent chamber occurs relatively slowly, not instantaneously, so that the height of the chamber decreases slowly. Therefore, it also has an advantage that it functions as a cushion and can receive the whole body or the head softly.

Furthermore, after the bag is deformed in accordance with the shape of the head and the liquid volume in each chamber is once determined, there is a tendency to maintain the liquid volume in each chamber due to the resistance of the liquid flow path. Even if the head temporarily moves, the shape of the aqueous liquid storage bag does not immediately collapse, and the depressed shape containing the head is maintained. Therefore, when used as a water pillow, there is also an advantage that the head is comfortable to sit on.

As a still further advantage, the aqueous liquid storage bag is divided into a number of chambers with limited flow between each other, so that even if a hole is made in one part of the bag for some reason, the inside of the bag is not affected. Since the leak rate of the aqueous liquid is greatly suppressed, it is easy to deal with it.

Therefore, the aqueous liquid storage bag of the present invention
It can be used simply and advantageously as an alternative to conventional water pillows and water beds. Further, the present invention is not limited thereto, and can be used as a water mat of various sizes. For example, the water mat can be placed on a cushion or a chair or hanged on a chair back. In any of these cases, there is an advantage that it is deformed according to the shape of the body and fits softly to the body.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The aqueous liquid storage bag of the present invention comprises:
It may be produced in various sizes and contours according to the application and usage. That is, rectangles, circles,
A donut shape or other various contour shapes may be arbitrarily selected. When used as a water pillow, for example, 30-40 c per side
It may be a square of about m or the like, and it may be used with it expanded, or it may be used by folding it at the center. Of course, it may be a rectangle that matches the shape of a general pillow. When used as a water bed, it may be adjusted to the size of the mat or futon of the bed to be used, and when used on a cushion, the size and shape of a normal cushion may be used.

As a material of the soft plastic sheet, for example, polyvinyl chloride or other appropriate general-purpose soft plastic may be used as appropriate. A thermoplastic resin is preferable because the periphery of the sheet is fused, but the sheet does not necessarily need to be made of a single resin, and may be a laminate of a plurality of resins. Further, since a specific means for forming a fused body is not the essence of the present invention, in this specification, "fused" refers to a state in which two resins are simply bonded together at a corresponding portion. The method includes, but is not limited to, heat fusion (heat sealing) by various methods, and also includes adhesion such as solvent adhesion. The thickness of the plastic sheet may be such that a soft touch is obtained and holes are not formed in normal handling.

[0014] The width, shape and arrangement pattern of the mesh-like fusion band are not particularly limited. The cohesive zone is, for example, 3 mm to 1 mm.
The width may be an appropriate width such as 0 mm. The width of the cohesive zone does not necessarily have to be constant. The cohesive zone serves to divide the aqueous liquid storage bag of the present invention into multiple chambers, and may also serve to provide folds when used in a folded configuration. Regarding the overall arrangement of the reticulated cohesive zone,
For example, individual chambers may be arranged in a lattice shape such that the shapes are square or rectangular, or the fusion zones may be arranged so as to form a large number of triangular or hexagonal chambers. The shape of the individual cohesive zones may be curvilinear, and thus may form a chamber surrounded by the curvilinear shape.

The fluid passages are formed by making only a small part of the fused body separating the chambers discontinuous, so that the ends of the fusion band facing each other with the discontinuous portion interposed therebetween and the two ends located between them. The gap is formed by the sheet portions facing each other, and the size, number, and arrangement of the gaps may be appropriately set so that the flow of the aqueous liquid inside can be prevented to a desired degree. Normally, each chamber may be configured so as to have one or several liquid channels between adjacent chambers.

When the aqueous liquid storage bag of the present invention is provided with an openable / closable port, the form of the port is arbitrary. For example, it may have the same form as a mouth commonly used for a floating bag or the like, and may be used in combination with a plug having a similar structure to a fitting type stopper which is also widely used for closing the mouth of a floating bag or the like. . Since the aqueous liquid storage bag of the present invention has a relatively flat shape as a whole, an excessive internal pressure is not applied in a normal use method, so that such a structure can be used sufficiently safely without fear of water leakage. Needless to say, instead of such general use, a structure in which a mouth screw cap type lid having a screw thread on the periphery may be used, or an appropriate structure that can prevent water leakage may be used. The number of ports that can be opened and closed may be one, but two or more ports may be provided.

In the present invention, the aqueous liquid is usually tap water, but may be an aqueous solution containing salts. A preferred example is hot spring water produced from 898 Yanakagakinai, Jinano, Hashimoto, Wakayama Prefecture.

[0018]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to typical examples, but it is not intended that the present invention be limited to these examples.

<Embodiment 1> FIG. 1 is a plan view of an embodiment of an aqueous liquid storage bag according to the present invention which can be used for a water pillow, a cushion or the like. In the figure, reference numeral 1 denotes an aqueous liquid storage bag of the present invention, which is formed in a bag shape by laminating thermoplastic sheets such as a vinyl chloride sheet and heat-sealing along a peripheral edge 3. Is housed. 5 is an elongated fusion zone formed by heat sealing between the facing thermoplastic sheets, arranged in a transverse and longitudinal direction from one edge to the opposite edge of the bag;
Thereby, the inside of the bag is divided into a lattice shape to form a large number of chambers 7. However, the fusion zone 5 is not completely continuous, and a slight discontinuity 9 is provided near the intersection of the horizontal and vertical fusion zones in the figure. In the discontinuous portion, the upper and lower two sheets are not integrated, so there is a slight gap between the two, thereby providing a liquid flow path, through which each chamber is in liquid communication with an adjacent chamber. I have. Reference numeral 12 denotes a port used for injecting water into the bag, which is already sealed by heat sealing.

FIG. 2 is a partially enlarged view centering on one chamber in the bag of FIG. 1, showing a fusion zone 5 that partitions around the chamber 7, and a discontinuity provided in the fusion zone 5. The form of the part 9 is shown in more detail.

FIG. 3 is a sectional view taken along the line AA in FIG. 2, and each of the chambers 7 containing water divided by the cohesive zone 5.
Is illustrated.

In this embodiment, the gap in the discontinuous portion 9 of the cohesive zone 5 is limited and narrow in comparison with the width of the chamber 7, that is, with respect to the amount of water inside the chamber 7. The gap is small. Therefore, when pressure is applied to any one of the chambers 7 from outside, water contained inside the chambers passes through a narrow liquid flow path defined by the discontinuous portion 9 of the cohesive zone 5 and adjoins. However, since water flows through this narrow liquid flow path, there is substantial resistance, so water cannot move quickly to the adjacent chamber, but slowly. Move to In this way, the volume of the chamber 7 (that is, the amount of water inside the chamber 7) gradually decreases from the outside according to the pressure. Can work. In addition, the interior of the bag is divided into chambers, and the space between the chambers is blocked by a horizontal fusion zone, so that vibration applied to a part of the bag is transmitted to other parts. There is no. Furthermore, despite being divided into chambers, since the chambers are in liquid communication with each other, the pressure applied to one location is appropriately dispersed, and there is no possibility that the body will be excessively pressed locally. .

When the aqueous liquid storage bag of this embodiment is used as a water pillow, it can be used as it is or folded in two. By placing the head, the water inside moves slowly between the rooms according to the pressure, and as a result, the shape of the bag fits the shape of the contact surface of the head, and the head is softly received Become. Also, due to the resistance of the discontinuity 9 to the movement of water between the rooms, this shape does not collapse immediately, so that the head sits well. In addition, even if a hole is formed in the bag for some reason, the inside of the bag is divided into a large number of chambers, so that the water in the bag does not spill out at once, and a time for coping can be secured.

<Embodiment 2> FIG. 4 is a plan view of another embodiment. In the figure, 21 is an aqueous liquid storage bag, 2
Reference numeral 3 denotes a heat-sealed rim, reference numeral 25 denotes a fusion zone which is arranged in a staggered lattice unlike the first embodiment, and reference numeral 27 denotes a chamber partitioned by these fusion zones 25 and is filled with water. Have been. Discontinuous portion 2 provided in cohesive zone 25
Reference numeral 9 is provided in the middle of the intersection of the vertical and horizontal fusion zones in this embodiment. Reference numeral 22 denotes an openable / closable port for taking in and out of water, and a screw cap 24 is attached to the port. This embodiment is the same as Embodiment 1 except for the arrangement of the fusion zone 25, the discontinuous portion 29, the port 22 and the screw cap 24, and has the same operation and effect.

<Embodiment 3> FIG. 5 is a plan view of still another embodiment. In the figure, 31 is an aqueous liquid storage bag, 33 is a heat-sealed rim, 35 is a fusion zone arranged in a triangular mesh unlike in Examples 1 and 2,
Reference numeral 37 denotes a chamber partitioned by these cohesive zones 35, the inside of which is filled with water, and 39, a discontinuous portion provided in the cohesive zone 5. Reference numeral 32 denotes a port used for injecting water into the bag, which is already heat-sealed. In this embodiment, the cohesive zone 5 and the discontinuous portion 9
Are the same as those in the first embodiment, and have the same operational effects.

The first to third embodiments can be expanded and contracted to have an appropriate size according to the application, and the size may be increased or decreased by appropriately adding or reducing the number of chambers.
For example, as a water pillow, the shape of Examples 1 to 3 may be used, for example, one side may be 30 to 40 cm. An array may be set. Further, in the case of a bag used as a water bed, for example, a necessary number of rooms having the same size as a water pillow may be added, and the whole may be a large bed.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment.

FIG. 2 is a partially enlarged view of the first embodiment.

FIG. 3 is a sectional view taken along line AA of the first embodiment shown in FIG. 2;

FIG. 4 is a plan view of a second embodiment.

FIG. 5 is a plan view of a third embodiment.

[Explanation of symbols]

 1, 21, 31 = aqueous liquid storage bag 12, 22, 32 = port 3, 23, 33 = peripheral edge 24 = screw cap 5, 25, 35 = cohesive zone 7, 27, 37 = chamber 9, 29, 39 = Discontinuity

Claims (4)

[Claims] 1. A sealed bag containing an aqueous liquid, wherein the bag is formed by fusing together a superposed soft plastic sheet along a peripheral edge, and furthermore, the inside of the bag is opposed to each other. Are divided into a plurality of chambers by a fusion zone arranged in a mesh shape formed by fusing at their contact surfaces, and each of the plurality of chambers is connected to at least one of the adjacent chambers via a liquid flow path. And the liquid flow path is formed by providing a discontinuity in the cohesive zone to create a limited gap, whereby the chamber is externally pressurized. An aqueous liquid containing bag, wherein the outflow of the aqueous liquid from the chamber to an adjacent communicating chamber is delayed by resistance due to the fluid flow path. 2. The aqueous liquid storage bag according to claim 1, further comprising at least one openable / closable port for taking in / out the aqueous liquid. 3. The aqueous liquid storage bag according to claim 1, which is a water pillow. 4. The water bed according to claim 1, which is a water bed.
Aqueous liquid storage bag.