JPS5941726B2 - Filling material for pillows - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pillow filler VC made of polystyrene spherical bodies with excellent antistatic ability and heat dissipation.

In general, a good night's sleep is more important than anything else in order to relieve stress, and for that purpose, comfortable bedding is necessary.Although there has been considerable research into futons, they are often overlooked. What is there is a pillow.

The size and height of the pillow are important factors for a good night's sleep, but the most important is the effect of cooling the head and warming the feet, that is, the effect of cooling the head and warming the feet.

Buckwheat hulls, rice hulls, adzuki beans, etc. have traditionally been used as fillers for pillows, but recently, panya, synthetic cotton, etc. have also come into use.

Buckwheat was considered the best in terms of texture and heat dissipation (keeps the head cold and keeps the feet warm).

However, in addition to the decline in domestic production of buckwheat (mostly imported from China), there are also transportation difficulties due to the inability to compress buckwheat, so there is no substitute for buckwheat that has the texture and heat dissipation properties of buckwheat. It was strongly requested.

It is known that small balls made of synthetic resin whose surface has been treated to make them slippery can be used as an alternative to this (Utility Model Publication No. 47-571).
(Refer to Publication No. 7) However, when filled with synthetic resin pellets whose surface has been treated to make them slippery, they do not have sufficient heat dissipation, are heavy and inconvenient to carry, and are highly electrostatically charged. Therefore, they have drawbacks such as causing electrical discharge during use, which can cause shock to the human body, and attracting dust, which makes dirt conspicuous.

The present inventor overcame the drawbacks of these conventional pillow fillers and researched synthetic resin globules with excellent heat dissipation and antistatic properties. The inventors have discovered that a spherical body whose surface is coated with a specific antistatic agent can provide a pillow that has excellent heat dissipation and antistatic properties and is easy to carry.

That is, in the present invention, the outside of spherical expanded polystyrene with an average expansion ratio of 20 to 30 times is coated with non-foamed polystyrene with a thickness of 0.001 to 1.0 times, and the surface is further coated with a quaternary alkylamide. The outer diameter coated with ammonium salt is 3~
This is a sheet filler made of 10 mm polystyrene spheres.

The filler of the present invention needs to have a spherical shape in order to fit in with the head.

That is, if the filling material is spherical, it is easy to move when sleeping or turning over, and it adapts to the shape of the head.

In the present invention, the spherical expanded polystyrene has an average expansion ratio of 5 to 30 times, preferably 10 to 20 times.

If the average expansion ratio is smaller than 5 times or larger than 30 times, the heat dissipation property will be poor.

(The heat dissipation required for a comfortable pillow is usually 3 to 5 x 10-10-4ca1cIrL-1sec-
It is 1de.

When the average expansion ratio is particularly K10 to 20 times, the heat dissipation property is good and the breaking strength is high, so that it can withstand long-term use.

In the present invention, it is necessary for the polystyrene spherical body to have an outer shell structure from the viewpoint of stability against movement and compressive stress.

That is, the outside of the expanded polystyrene sphere has a thickness of 0.00.
It must be covered with 1-1.0 mm of non-foamed polystyrene.

The unfoamed polystyrene is further coated with an alkylamide quaternary ammonium salt.

By doing so, the antistatic properties of the pillow filled with polystyrene spheres can be significantly improved.

Examples of the alkylamide quaternary ammonium salts include stearic acid amide quaternary ammonium salts and palmitic acid amide quaternary ammonium salts, and nitrates are particularly preferred as these salts.

Efcol #70 (registered trademark, manufactured by Matsumoto Yushi Co., Ltd.) is particularly preferably used as the alkylamide quaternary ammonium salt.

The spherical diameter of the expanded polystyrene sphere is 3 to 10 mm, preferably 4 to 8 mm.

Even if the sphere diameter is smaller than 3 mm or larger than 10 mm, the heat dissipation of the pillow filled with it will be poor.

When the sphere diameter is 5 to 7 mm, heat dissipation is very good, and a pillow filled with these spheres feels good when you rest your head on it, making it most suitable for inducing a good night's sleep.

The sheet filling material of the present invention will be explained with reference to the drawings as shown in FIGS. 1 and 2.

FIG. 1 shows a side view of a spherical body which is a sexual filler of the present invention, and FIG. 2 shows a cross-sectional view thereof.

1 is a coating layer of alkylamide quaternary ammonium salt, 2
3 shows the outer shell part of the spherical expanded polystyrene, that is, the non-expanded polystyrene layer, 3 shows the solid part of the spherical expanded polystyrene, and 4 shows the cells of the spherical expanded polystyrene.

In order to produce the polystyrene spherical bodies of the present invention, when molding the polystyrene chips using an extruder, the molten polystyrene is thoroughly mixed while being injected with air or foamed with a foaming material in the extruder. At the moment when it is dripped (
It is preferable to use a method in which the sphere is formed into a spherical body having an outer shell, that is, a layer of unexpanded polystyrene, due to surface tension and condensation by rapid cooling.

Then, the spherical bodies obtained by such a method are coated with an alkylamide ammonium salt.

Methods for this coating include immersing the spherical body in an aqueous solution or dispersion of an alkylamide ammonium salt and then drying it, or spraying an aqueous solution or dispersion of an alkylamide ammonium salt onto the spherical body and then drying it. .

The present invention will be described in detail below with reference to Examples.

Example Polystyrene chips are melted in an extruder and mixed by injecting air during stirring.

Next, by dropping the molten polystyrene into cold water from the nozzle of the extruder, it is spheroidized by surface tension and simultaneously formed by condensation to form an outer shell, that is, a non-foamed polystyrene layer, to produce a polystyrene spherical body with the following performance. did.

x 7-1-/l/# in this polystyrene spherical body
After spraying an aqueous dispersion of No. 70, it was dried to obtain a sheet filler.

1.2 kg of this sheet filler was placed in a nylon fabric bag and a polyester/cotton 65/35 blend fabric cover (printed) was placed on top of it, resulting in a pillow with excellent heat dissipation and antistatic properties. was gotten.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side view of a polystyrene spherical body which is a filling material for a pillow according to the present invention, and FIG. 2 shows a cross-sectional view thereof.

Claims (1)

[Claims] 1. The outside of a spherical foamed polystyrene with an average expansion ratio of 5 to 30 times is covered with non-foamed polystyrene with a thickness of 0.001 to 1.0 mm, and the surface is further covered with alkylamide quaternary polystyrene. A filling material for pillows consisting of polystyrene spheres with an outer diameter of 3 to 10 mm coated with grade ammonium salt. 2. Claim 1, wherein the alkylamide quaternary ammonium salt is a stearic acid amide quaternary ammonium salt and/or a palmitic acid amide quaternary ammonium salt.
Filling material for pillows as described in section. 3. The pillow filler according to claim 1 or 2, wherein the alkylamide quaternary ammonium salt is an alkylamide quaternary ammonium nitrate. 4. The pillow filling material according to claims 1 to 3, which has an average expansion ratio of 10 to 20 times. 5. The pillow filler according to claims 1 to 4, wherein the polystyrene spherical bodies have an outer diameter of 4 to 8%.