JP2650123B2 - Futon filling - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a futon filling used for bedding, mattresses, seat pillows and the like used as bedding.

(Prior art) In general, futons are made by wrapping and filling a futon filling with a futon of cloth, and the filling used for the futon is light in weight and has a moderate elasticity, cushioning property, It is necessary to be able to obtain comfortable sleep without heat retention and moisture absorption, without clumping.

Conventionally, rubber sponges such as urethane foam and rubber foam have been used as such fillings for futons, in addition to cotton, wool, crimped socks, panya, synthetic fibers and the like.

However, some of the conventionally used futon fillings include
As seen in rubber sponge, it was too soft and the body sank more than necessary.On the contrary, it lacked elasticity like cotton and synthetic fiber and became thin immediately by compression, and also had disadvantages such as insufficient moisture absorption. .

Further, the conventional product has a problem that it has a poor deodorizing effect on odor due to sweating or the like after long-term continuous use, such as in a hospital.

(Problems to be Solved by the Invention) In view of the above problems, the present inventors have conducted intensive studies, and as a result, have found that a polyvinyl acetal-based porous material containing natural wood powder having a certain aromatic property as a filling for futons It has been found that the above problems can be solved by the use of, and an object of the present invention is to have light weight and moderate hardness and elasticity, as well as excellent breathability and hygroscopicity, and to further emit fragrance. It is an object of the present invention to provide a futon filling that provides a more comfortable and comfortable sleep effect.

(Means for Solving the Problems) An object of the present invention is to convert a natural wood powder containing tropolone into a polyvinyl acetal porous material having continuous pores.
This is achieved by a solid futon filling containing 20 to 50% by weight.

In the present invention, tropolone is represented by the general formula (Where R is an alkyl group or hydrogen), and tropolone and its derivative represented by Are preferably called hinokitiol and β-drabrin. Such an organic substance is an oily component specifically contained in timber of the genus Hinoki and Asunaro, and is an aromatic component unique to natural wood of these genera. In addition, tropolone such as hinokitiol and β-drabulin are known to have a tranquilizing effect, and exhibit a sleeping effect.

The polyvinyl acetal-based porous material of the present invention is a product obtained by adding an aldehyde, a catalyst, and a pore-forming material to an aqueous solution of polyvinyl alcohol to cause a reaction.

In the present invention, the content of the natural wood powder containing tropolone is preferably 20 to 50% by weight, more preferably 30 to 40% by weight, based on the dry weight of the whole futon filling. If it is less than 20% by weight, it tends to be too soft at the time of moisture absorption, and the effect of the fragrance of tropolone is small. If it exceeds 50% by weight, embrittlement such as ragging is apt to occur, which is inappropriate.

In the present invention, the porosity of the porous body is preferably from 70 to 95% by volume. If the porosity is less than 70%, the number of independent pores tends to increase, and the effect of continuous pores will not be sufficient, and if it exceeds 95%, the whole structure will be weakened and will collapse or deform during use Is not preferred.

The form of the filling for futon of the present invention is not particularly limited, for example, those in a string shape or a sheet shape,
Alternatively, small pieces may be used.

The filling for futon of the present invention is prepared by preparing a powder of natural wood containing tropolone, the size of which is adjusted to 2 mm or less by a sieve or the like, and then adding the powder to an aqueous polyvinyl alcohol solution and mixing. Starches such as potato starch are added as a pore-forming material, aldehydes and an acid catalyst are further added, and the mixture is stirred uniformly to form a slurry-like liquid. This is cast into a predetermined mold, for example, a reaction is carried out at 50 to 80 ° C. for 15 to 25 hours to obtain a reaction product, which is then washed, cut into a suitable shape, and then dried to obtain a product. Can be

Since the filling for futon obtained by the above-mentioned method contains natural wood powder containing tropolone fixed to a porous body having continuous pores, it emits the fragrance of tropolone, and is hygroscopic and moderately absorbent. With a hardness of

(Example) After crushing Aomori Hiba, 2 kg of wood flour adjusted to a size of about 300 to 1500 μ with a sieve was wetted with water,
And dispersed in water.

3.5 kg of completely saponified polyvinyl alcohol with a polymerization degree of 1700
Was dissolved in 30 hot water to obtain an aqueous solution of polyvinyl alcohol. Next, 1.8 kg of potato starch was dispersed in 5 of water, mixed with the above-mentioned aqueous solution of polyvinyl alcohol, and heated to 68 ° C. to obtain a uniform viscous liquid. To this viscous liquid, the previously prepared dispersion of Aomori Hiba powder was added with stirring to form a uniform dispersion, and the mixture was cooled. A 37% aqueous formaldehyde solution and 50% sulfuric acid (6 each) were added and stirred. Further water was added to adjust the total amount to 60. The reaction solution was poured into a polyvinyl chloride mold while maintaining the temperature at about 43 ° C., and heated at 60 ° C. for about 20 hours to obtain a reaction product. Take this out of the mold, wash it with water to remove the remaining formaldehyde, sulfuric acid and starch, cut it into a rectangular string with a cross section of approx. And

The above-mentioned bedding for futon was aligned in the longitudinal direction, laminated and filled in a cotton cloth futon skin, and sewn to produce a futon having a thickness of about 12 cm.

The bedding obtained is lightweight, tactile and flexible, has a moderate elasticity to hold down, does not sink as seen in conventional mattresses, and has a unique cypress fragrance that is thought to be caused by tropolones. It had excellent breathability and hygroscopicity, effectively absorbed sweat, and exhibited a comfortable and comfortable sleep effect.

Further, since the fillings for futons of the present invention have relatively large friction, even with simple sewing, the futons were not deformed due to the one-sided filling.

(Effect of the Invention) The bedding using the futon filling according to the present invention is lightweight, has appropriate hardness and elasticity, and does not sink into the body as seen in a conventional mattress when used. It is excellent in hygroscopicity, absorbs moisture from perspiration well, and does not give any unpleasant finish. In addition, it emits a luxurious cypress scent of tropolones and has a tranquilizing effect,
It has the effect of eliminating or reducing unpleasant odors such as sweaty odor due to long-term continuous use, and provides a comfortable and comfortable sleep effect.

Further, the filling for futons of the present invention can also be applied to fillings such as mattresses and pads used for beds,
Furthermore, it is also suitable as a filling in seat cushions.

Claims (1)

(57) [Claims] 1. A powder of natural wood containing tropolone is added to a polyvinyl acetal porous material having continuous pores by 20 to 20%.
50% by weight fixed futon filling.