JPH0473011A - Cushion and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a cushion which is thin, light weight and formable in any shape, and has the same feeling as a water matress or a pad, and is also waterproof by a method wherein a foamed elastic member made of foamed polyurethane foam and gel substance contained in the foamed elastic member and consisting of water-absorbing resin and water absorbed in the resin are wrapped by a bag-shaped waterproof sheet. CONSTITUTION:Foaming of foamed polyurethane foam is obtained by mixing polyol solution and isocyanate solution which are urethane stock solutions. Powder of water absorbing resin is preliminarily contained in the isocyanate solution. The stock solution obtained by mixing the both solutions is poured into a die. After foaming, a molding is put into a bag-shaped waterproof sheet 10. Then water is supplied into the waterproof sheet 10, which is sealed on the periphery after that. Gel substance 9 has elasticity and repulsion, and both the elasticity and repulsion exist within an urethane foam 8. On the other hand, the gel itself is like pudding, and therefore, existence of a number of the gel substances 9 in a cushion give a feeling similar to water to a user who lies on the cushion.

Description

[Detailed Description of the Invention] "Objective of the Invention (Field of Industrial Application) This invention is a medically applicable method for treating the human body in two places such as beds, mattresses, pads, chairs, etc. 1- Concerning the solution body and its manufacturing method that contributes to the prevention of occurrence.

(Prior Art) Recently, various types of water mats have been developed that imitate the feeling of floating on waves and support the body weight along the body shape.

The advantage of Waterma Sotress is that it easily conforms to one body type and provides good support for distributing the user's weight.

It is cool in the summer because it uses water, warm in the winter because it uses a thermal heater, and it feels like sleeping on the waves, depending on the user's preference.

can be given.

However, since water mattresses seal in a large amount of water, the weight of the mattress becomes large, placing stress on the bedroom floor, requiring measures to prevent water leakage, and causing problems with the user's weight shifting. The waves generated by the waves cause abnormal noises, which requires measures to cancel the waves, resulting in high costs, and also has drawbacks such as difficulty in turning over in bed.

(Problems to be Solved by the Invention) This invention was made in view of the above circumstances, and its purpose is to utilize properties similar to the feel of water pine tresses, but to reduce the weight and To provide a cushion body which is used for cushions of bed mattresses, mattresses, chairs, etc., and which contributes to preventing bedsores and has no risk of leakage and no wave movement, and a method for manufacturing the same.

[Structure of the Invention] (Means and Effects for Solving the Problems) In order to solve the above problems, the present invention provides a foamed elastic body made of foamed polyurethane foam, etc. A gel substance is formed by absorbing water and swelling a polyurethane resin, which is then covered and sealed with a bag-like waterproof sheet to form a cushion body. When mixing and foaming incyanate, there are two steps: a step of mixing water-absorbing resin powder into the isocyanate in advance, a step of injecting the stock solution mixed with the above into a mold and foaming it, and a step of molding the molded product into a bag shape after foam molding. A step of inserting the resin into a molded tarpaulin sheet or covering the entire surface with a tarpaulin sheet, and supplying water into the tarpaulin sheet to cause the water-absorbent resin powder contained in the formed foam to absorb water and swell to form a gel substance. It is thin, lightweight, and does not leak water by manufacturing with a process that prevents the gel substance from drying by blocking the water tap of the tarpaulin sheet or sealing the periphery of the tarpaulin sheet with a seal 1-. It should be possible to provide a cushion body with repulsive force.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view showing the state in which the lion body according to the present invention is inserted into the accommodating part provided in the exterior body of the mattoss. Although a cross-sectional view is shown,
This manotress includes a spring unit A, a protective layer and a cushion layer B attached to the outer surface of the spring unit A, and an exterior body C that covers these. It is sewn into a bag shape and has a second mirrored area 5 and a second gusseted area 6 on at least one side in the vertical direction, and between the first mirrored area 3 and the second mirrored area 5. A accommodating portion is provided at the second gusset, and a fastener 7 is provided at the second gusset to allow three cushion bodies E according to the present invention to be inserted and removed.

The second mirror base 5 (not shown) may be a quilt layer sandwiching synthetic fiber wadding or urethane foam.The spring unit A has springs arranged in parallel and their end shafts connected by a helical wire 2.

The cushion body according to the present invention is shown in FIG. 3, and the urethane foam 8 contains countless spherical gel substances 9 that have absorbed water! The urethane foam 8 is sealed with a bag-shaped waterproof sheet 10 (for example, a PVC sheet), water is supplied from a water supply port 11, and the water supply valve 12 is closed.

This gel substance 9 is made by absorbing water into a powder of a water-absorbing resin such as acrylic acid vinyl alcohol copolymer or 7' acrylic acid sodium polymer, and the volume of this powder increases from 20Q to 1.5Q by absorbing water. It is possible to swell 1,000 times.

The supplied water is mainly absorbed by the water-absorbent resin bitten by the urethane foam 8, forming a gel material 9, and the remaining free water is absorbed into the bubbles of the urethane foam 8 itself, but the amount of supplied water is determined by the water absorption. The water absorption capacity of the resin is 174 to 1.・40 (from - to forty minutes -)
It is customary to set .degree. to prevent free water from being generated and to prevent water from leaking out if the bag-shaped waterproof sheet 10 is damaged.

In this way, the weight of the solution body can be less than 1/'2 (-) of the weight of a water mattress of the same volume.

The manufacturing method of this glue/sotion body is shown in Figure 4. In the foam molding of expandable polyurethane foam, a polyol solution, which is a urethane stock solution, and an incyanate solution are mixed and foamed. The above-mentioned water-absorbing resin powder is mixed in advance, and an undiluted solution of both the above-mentioned liquids is injected into the mold (1) After foam molding, the molded product is placed in a bag-shaped waterproof sheet 10 (2). After water is supplied into the waterproof sheet 10, the periphery is sealed to make it airtight (reference 3).

The gel material 9 has elasticity and repulsion, and each of them is present in the urethane foam 8, and the gel itself is pudding-like, so when a user lies down on this cushion body, the gel material Sf9 absorbs water. A similar feel can be obtained.

Further, since the gel substance 9 exists within the urethane foam 8, even if the cushion body is crushed by the user's load, the elasticity 9 repulsion of the urethane foam 8 prevents it from bottoming out. This is advantageous compared to the case where the water pine tress is easily drained from the area where the weight is applied by the user's weight, and the water can easily sink to the bottom.

The one shown in Fig. 5 is one in which the three glue/l-jon body E inserted into the accommodating part of Fig. 2 is used as one piece, and the one shown in Fig. 6 is one that is inserted into the accommodating part of Fig. 2. Instead of providing a cushion body E, a spring unit A, a protective layer, and a cushion layer B are covered with an exterior body C'.

The one shown in Fig. 7 is one in which the spring unit E is extended to the side of the spring unit A. This contributes to amplifying the sensation similar to a tress, making the whole thing even more similar to a water pine tress.

Furthermore, as shown in FIG. 8, a mattress using the cushion body according to the present invention is most suitable for a bed having a reclining am. This is because it exists within the gel material 9 or the urethane foam 8 and does not move, so even if the back or legs are tilted, the water moves like a water pine tress that only contains water, and the action of the urethane foam 8 causes the water to move. This is because there is no such thing as not being able to fulfill the purpose.
This is a big difference from Sotores.

Since some types of cushion bodies use foam-molded foam/tan foam, a cushion body made by integrating the seat back of a chair as shown in No. 9V is molded into the desired shape when foam-molded. It can be made into any shape.

A conventional chair that uses water has a structure in which several bags filled with water are hung on the back part of the chair from above in order. If the cushion body according to the present invention is used, the gel substance 9 Since it exists within the urethane foam 8 and does not move, the back and seat of the chair can be molded into one piece and a feel similar to that of water can be obtained.

Further, since the hardness can be easily changed by adjusting the composition of the urethane stock solution, molding can be performed by partially adjusting the amount of gel material 9 as shown in FIG.

It is possible to partially change the hardness and elasticity by changing the injection method of the stock solution in the mold.

For example, when injecting a urethane stock solution into a mold using a spray method that can be moved using a traverser, the hardness can be changed in the thickness direction and width direction by controlling the urethane stock solution having different properties and injecting it at the same time.

Furthermore, it is desirable to provide a thermal heater (not shown) on the lower surface of the cushion body.Since water is used, the cushion body is cool in the summer, and warm in the winter due to the thermal heater. Since this resin body uses urethane foam, it has the advantage that it does not cool easily when heated.

[Effects of the Invention] As described above, this invention is based on a foamed elastic body made of foamed polyurethane 7-O-1, etc., and a gel formed by absorbing water and swelling the water-absorbing resin contained in the foamed elastic body. The material is covered and sealed with a bag-like waterproof sheet to form an oval cushion body, and in its manufacture, polyol and incyanate, which is the urethane stock solution of expandable polyurethane foam, are mixed and foamed. A step of pre-mixing water-absorbing resin powder into this incyanate, a step of injecting the above-mentioned mixed stock solution into a mold and foaming it, and a step of inserting the molded product into a bag-shaped waterproof sheet after foam molding, or A process of covering the entire surface with a tarpaulin sheet, a process of supplying water into the tarpaulin sheet and causing the water-absorbing resin powder contained in the molded polyurethane foam to absorb water and swell into a gel substance, and a process of blocking the water tap of the tarpaulin sheet. Alternatively, the periphery of the tarpaulin sheet may be sealed to prevent the gel material from drying out.

Therefore, according to the cushion body of the present invention, it is possible to provide a cushion body that is lightweight and has a flexible shape, has a feel similar to that of Water Mattress and Paved, and does not leak water, and further improves user comfort. Since it is effective in dispersing and supporting the body weight, it can prevent the occurrence of bed sores in bedridden patients and the elderly.

[Brief explanation of the drawing]

The drawing is a fruit of this invention 1Jf! ! , M, FIG. 1 is a perspective view showing a cushion body according to the present invention inserted into a pinerest, FIG. FIG. 4 is an explanatory diagram showing the manufacturing process of the cushion body according to the present invention, and FIGS. 5, 6, and 7 are cross-sectional views of the cushion body according to the present invention when the cushion body according to the present invention is adopted as a pinerest. A cross-sectional view of another embodiment of an actual project, Figure 8 is a cross-sectional view of an embodiment of a mattress employing a one-piece body according to the present invention, and Figure 9 is a cross-sectional view of an embodiment adopted for a chair. FIG. 10 shows a cross-sectional view of another embodiment of the cushion body according to the present invention. Code A Ni-spring unit B: Protective layer and cushion layer C: Exterior body D: Accommodating portion E: Cushion body 1 Ni-spring 2: Helical wire 3: Mirror area 4: Gusset area 5: Second mirror area 6: Second Gusset 7: Zipper 8: Urethane foam 9, gel material 10, waterproof sheet 11, water inlet 12: water tap 5. pressure 1 to 1 chi 3° shi 43-noge 9.51 child fo ran

Claims (2)

[Claims] (1) It consists of a foamed elastic body made of foamed polyurethane foam, etc., and a gel substance made by absorbing water and swelling the water-absorbing resin contained in the foamed elastic body, which are covered and sealed with a bag-shaped waterproof sheet. Cushion body. (2) When mixing polyol and isocyanate, which are the urethane stock solution for expandable polyurethane foam, and foaming, there is a step in which water-absorbing resin powder is mixed into the isocyanate in advance, and the mixed stock solution is injected into the mold and foamed. After foam molding, the molded product is inserted into a bag-shaped tarpaulin sheet or the whole is covered with a tarpaulin sheet, and water is supplied into the tarpaulin sheet to absorb water contained in the molded polyurethane foam. A cushion comprising the steps of: making a plastic resin powder absorb water and swell to form a gel material; and a step of preventing the gel material from drying out by blocking the water tap of the tarpaulin sheet or sealing the periphery of the tarpaulin sheet. How the body is manufactured.