JPH01237133A - Laminated sheet - Google Patents

Abstract

PURPOSE:To manufacture a laminated sheet of good energy absorption properties having the actions such as prevention of bedsore, acceleration of blood circulation, absorption of perspiration and the like by providing a carrying area of far infrared rays radioactive ceramic powder on the surface of a non-woven cloth and laminating integrally a shock absorbing elastomer layer on the carrying area setting side of the non-woven cloth or its opposite side surface. CONSTITUTION:A carrying area of far infrared radiation ceramic powder is provided on the surface of a non-woven cloth 2. A shock absorbing elastomer layer 3 is integrally laminated on the carrying area 1 setting side of the non-woven cloth 2 or its opposite side surface. As for the shock absorbing elastomer layer 3, a viscoelastic elastomer sheet having low harness and low impact resilience is used. The carrying area 1 radiates far infrared rays and is effective for the actions of blood circulation, prevention of cold, actuation of metabolism, control of pain and the like, and is the non- woven cloth 2 is of good resistance to wear, of good sturdiness and of good tensile strength, the same forms a base of the carrying area 1 and also gives good feeling, smooth texture, perspiration absorption properties, air permeability, permeability to water vapor and drying characteristics. The shock absorbing elastomer layer 3 absorbs shocks and provides a preferable fitting feeling.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laminated sheet using far-infrared emitting ceramic powder, particularly an energy-absorbing sheet that has functions such as preventing floor slippage, promoting blood circulation, and absorbing sweat. It's all about good laminated sheets.

Conventional technology Cushions placed under beds and bedding for sick patients are made of moderate elasticity that is neither too soft nor too hard, but such care must be taken in the case of sick people undergoing long-term care. Even if you do, bedsores may occur.

A bed called a water bed has been developed in which a drum can is filled with water and a bag is placed inside the partition to prevent bed sores or to sleep soundly.
The water temperature is controlled by a heater with a built-in thermostat.

Recently, supporters, sheets, underwear, etc. coated with far-infrared emissive ceramics have been introduced as clothing to prevent coldness.
Stomach wraps, one-sided bats, and socks have also been developed. (For example, see "Refreshing Far Infrared Health Method," published by Gendai Ichirin, published on February 5, 1988.) The problem that the invention aims to solve Waterbed is said to have a significant effect on preventing pressure sores and sleeping soundly. However, it is extremely heavy (for example, 180
kg) and extremely expensive (e.g. 30 to 5 kg)
00,000 yen), there are restrictions on where it can be used, and it is often financially unbearable.

In this regard, clothing coated with far-infrared emitting ceramics is simple and inexpensive, but it is not sufficient for preventing pressure sores, and it is also improved in terms of feel, durability, etc. There is room for

An object of the present invention is to provide an aM receipt using far-infrared emitting ceramic powder that does not have such problems.

Means for Solving the Problems The laminated sheet of the present invention is provided with a supporting region (1) of far-infrared emissive ceramic powder on the surface of a nonwoven fabric (2), and a supporting region (1) of the nonwoven fabric (2) on the installation side or Shock absorbing elastomer layer (3) on the opposite side
It has an integrated laminated structure.

The present invention will be explained in detail below.

As the nonwoven fabric (2), various nonwoven fabrics made of natural m, is or synthetic fibers can be used. It may also be an artificial leather-like nonwoven fabric having a core layer of woven fabric or the like.

Among the nonwoven fabrics (2), particularly preferred are nonwoven fabrics that have numerous fine pores bonded only at the overlapping points of the fibers.Such nonwoven fabrics are soft due to their flexibility, yet have a moderate stiffness and are durable. This is because it has excellent properties such as flexibility, sweat absorption, and sewing properties.

A far-infrared emitting ceramic powder supporting region (1) is provided on the surface of the nonwoven fabric (2).

As a supporting method, a method is usually employed in which the ceramic powder is mixed with a suitable bang and applied (including printing) onto the surface of the nonwoven fabric (2) in the form of a solution, dispersion, or melt. In some cases, a method may be adopted in which a binder is first applied to the surface of the nonwoven fabric (2) and then the ceramic powder is attached while the binder is not dried or cured.

Here, as far infrared emissive ceramics, 5iOz
, Ti0z, Z r02, FezO3, CuO, Sn
O2, CaO1Crz01, AIz03, Ni
O, Mn0z, 5bz03, Co01Li2,0
, PbO, Tie, ↑aC, ZrG: , S
iG, H[:, EC, We, TiBz, AIM
Ceramics of various compositions can be used as long as they have far-infrared radiation, such as ceramics with a combination of , ZrN, Mo5iz, etc.

Although it is generally desirable for the particle size of the far-infrared emitting ceramic powder to be small, it is also possible to intentionally use a large particle size in order to give the nonwoven fabric (2) a unique design effect or feel.

Formation of the supporting region (1) of the far-infrared emitting ceramic powder on the surface of the nonwoven fabric (2) can also be carried out over the entire surface of the nonwoven fabric (2), but in this case, the nonwoven fabric (2)
Since this would impair the feel, feel, etc. of 2), a region (1) carrying far-infrared emitting ceramic powder is usually formed partially on the surface of the nonwoven fabric (2).

In this case, it is desirable to form the mutually compatible region (1) in a designed shape, and in particular, it is desirable to form the mutually compatible region (1) in a designed shape so as to cover 5 to 80% of the surface of the nonwoven fabric (2). Examples include checkered patterns, dotted patterns, cloud patterns, geometric shapes, various design patterns, letters, etc.

Further, it is also possible to provide a recessed portion in the nonwoven fabric (2) by means such as embossing, and make the far-infrared emitting ceramic powder supported in the recessed portion.

Supporting area of far-infrared emissive ceramic powder on the surface (1)
The shock absorbing elastomer layer (3) is visible from the side where the supporting area (1) of the nonwoven fabric (2) provided with
) are laminated and integrated.

First non-woven fabric (2) and shock absorbing elastomer layer (3)
After laminating the supporting area (1) on the surface of the nonwoven fabric (2),
Alternatively, a supporting region (1) may be formed on the surface of the shock-absorbing elastomer layer (3), and the nonwoven fabric (2) may be laminated on top of the supporting region (1). (1) may be formed.

An example of a laminated arrangement of the supporting region (1), the nonwoven fabric (2), and the shock absorbing elastomer layer (3) is (2)/(1).
/(3), (1)/(2)/(3), (2)/(1)/(3)/(1)/(2), (1)/(
2)/(3)/(2)/(1), (2)/(1)/(3
)/(2), (1)/(2)/(3)/(2), (2)/(1)
/(2)/(3) etc.

It is particularly preferable to use a viscoelastic elastomer sheet having low hardness and low rebound resilience as the above-mentioned wrinkle-absorbing elastomer M (3). Examples of the viscoelastic elastomer include polyurethane elastomer, silicone elastomer, etc. .

Particularly suitable are those manufactured by blending silicone, polycarbinol, polypropylene oxide-siloxane copolymer, reinforcing agents (silica fibers, etc.), plasticizers, fillers, etc. with polyol and polyisocyanate as a base. Its hardness is much softer than that of general rubber, and its impact resilience is 20% or less, even 15% or less, in the Lupri pendulum impact resilience test. Incidentally, the rebound resilience of ordinary rubbers is a little less than 70% for natural rubber and about 45-62% for synthetic rubbers (butyl rubber, nitrile rubber, chloroprene rubber, styrene-butadiene rubber, etc.).

The shock-absorbing elastomer layer (3) is laminated on the installation side of the support area (1) of the nonwoven fabric (2) or on the opposite side thereof.
This is usually done using an adhesive, but the calendar (3) may also be formed directly.

The surface of the laminated sheet of the present invention may be appropriately subjected to secondary processing such as flocking. Further, when the surface is a nonwoven fabric (2), a raising treatment or the like can be applied.

The laminated sheet of the present invention is suitable for applications that come into contact with the human body directly or through clothing, such as bedding-related components (sheets, bed surface materials, pillow bags, cushion bags, covers, etc.), indoor equipment products ( Sofa surface materials, seats for chairs and chairs, lumbar pads, rugs, floor adhesive sheets, wallpaper, covers for Western-style toilets,
tablecloths, etc.), clothing, personal items (clothes, belly wraps, shoulder pads, socks, bands, hats, personal accessories, headwear, corsets, stuffed animals, bags, bag handles, bags, etc.), sports equipment (helmet interior) materials, racket spears, attachment materials for love handles, sports shoes, gloves, etc.), parts for vehicles, ships, aircraft, and motorcycles (seats, seat covers, lining materials, etc.), footwear (shoes, shoe insoles, slippers, sandals, etc.)
It is used for such things. In addition, it can be used for applications that do not involve the human body, such as sheets for preserving the freshness of agricultural and fishery products, dust gardening sheets, vibration and soundproofing materials, and materials for acoustic products.

Function and Effects of the Invention In the laminated sheet of the present invention, the supporting region (1) emits far infrared rays, promoting blood circulation, preventing coldness, activating metabolism,
Shows effects such as pain suppression.

Since the nonwoven fabric (2) has good abrasion resistance, stiffness, and tensile strength, it serves as the base for the carrying area (1), and provides feel, texture, sweat absorption, air permeability, moisture permeability, and drying properties. Sewing properties,
It also has good fraying resistance and good fishing properties, so it also has the advantage of being able to be sewn freely.

The shock-absorbing elastomer layer (3) absorbs shock and provides a comfortable fit.

And since these materials are combined together,
While maintaining the characteristics of each material, synergistic effects are produced. Therefore, it is particularly useful for applications that involve contact with the human body, either directly or through clothing.

The laminated sheet of the present invention also has the advantage that it is lightweight and can be manufactured at low cost.

Example Next, the present invention will be further explained with reference to Examples.

Example 1 FIG. 1 is a sectional view showing an example of a laminated sheet of the present invention. FIG. 2 is a plan view when a far-infrared emitting ceramic powder supporting region (1) is provided on the surface of the nonwoven fabric (2), and FIG. 3 is an end sectional view thereof.

A nonwoven fabric (2) made from polyamide core-sheath type composite filaments was prepared, in which only the overlapping points (intersection points) of the filaments were bonded and had numerous micropores. The 11M# property of this nonwoven fabric (2) was as follows.

Thickness 0.65 m11 Tensile strength Length 2.3 kg/c+s, Width 2.8 k
Breaking elongation in g/cm: 51 χ vertically, 34 χ horizontally Tear strength: 1.0 kgf vertically, 0.8 kgf horizontally Sewing point strength 2.5 kg/cm vertically, 3.5 kg/cm horizontally
cm Water vapor permeability 5.43 mg/cs"hr Air permeability 58.3 cc/cm"/sec (0.9
8mb) Seat wear resistance 3200 times (Dr7),
1800 (Wet) Sweat Absorption 280 in 0.5 seconds Dry Explosion 4 hr As is clear from the above characteristic values, this nonwoven fabric (2) is soft, durable, breathable, moisture permeable, It is a material that is excellent in terms of dry explosion resistance, abrasion resistance, stitchability, fraying resistance, fishing ability, waist, and sweat absorption. (By the way, the sweat absorption of cotton canvas is 99% in 0.5 seconds.

) A coating solution was prepared by mixing commercially available fine powder of SiO, -TiO Print it in a checkered pattern to mark the carrying area (1
) was formed (see Figures 2 and 3).The area of the supporting region (1) occupying 50% of the surface of the nonwoven fabric (2) was 50%. Even with this printing, the properties of the nonwoven fabric (2), such as the feel, feel (1) breathability, sweat absorption, and flexibility, remained almost the same before and after printing.

Next, the surface of the nonwoven fabric (2) on the installation surface side of the supporting area (1) is coated with low hardness (hardness by Shore 00 hardness tester: 50 degrees) and low resilience (repulsion resilience by Luprike pendulum resilience test: A 3 m+s thick absorbent elastomer layer (3) made of a viscoelastic polyurethane elastomer sheet (122/20°C) was laminated and bonded using a urethane adhesive. As a result, the laminated sheet shown in FIG. 1 was obtained.

This laminated sheet was laid on top and bottom, and a cotton cloth sheet was laid on top of it, and a panel of 10 people (4 long-term care patients, 2 bedridden elderly people, 4 healthy people) were given a comfortable wearing experience of 1 Jtl.
there was.

For comparison, a case where a blanket was spread on the bed and a cotton sheet was placed on top of it (Comparative Example 1), a case where a blanket was spread on the bed and a commercially available cotton sheet coated with far-infrared emitting ceramics was placed on top of it (Comparative Example 1). Regarding Comparative Example 2), panelists also
I asked him how it felt when he wore it.

As a result, all 10 of the 10 panelists answered that the case of Example 1 was much more comfortable than the cases of Comparative Examples 1 and 2. The specific reason was as follows.

■ Easy to turn over.

■ It has a good fit.

■ Warm your body from the core. Feel less cold.

Electric blankets and anchors become unnecessary.

■ It is gentle.

■ Pain is relieved.

■ Less stiffness.

■ I feel better. It's comfortable.

In the case of Comparative Example 1 and Comparative Example 2, in the case of Comparative Example 2, almost everyone answered that there was an effect of ■ above, and 3 to 6 people answered that there was an effect of ■, ■, or ■ in addition to the effect of ■. They answered that it was effective. However, even in the case of Comparative Example 2, there were no answers that the effects of ■ and ■ above were obtained, and the answers of ■
The number of responses for ■ was also small, 1 and 2, respectively.

Example 2 FIG. 4 is an end sectional view showing another example of the laminated sheet of the present invention.

The same operation as in Example 1 was performed except that the shock absorbing elastomer layer (3) was laminated and adhered to the surface of the nonwoven fabric (2) opposite to the installation surface of the supporting area (1). As a result, the fourth
The laminated sheet shown in the figure was obtained.

Example 3 FIG. 5 is an end sectional view showing still another example of the laminated sheet of the present invention.

The nonwoven fabric (2) of Example 1 on which the supporting region (1) was formed was
This was laminated and adhered to both the front and back surfaces of the shock-absorbing elastomer layer (3) of Example 1 so that the supporting area (1) side was on the outside. As a result, the laminated sheet shown in FIG. 5 was obtained.

Example 4 FIG. 6 is an end sectional view showing another example of the laminated sheet of the present invention. FIG. 7 is a plan view when a far-infrared emitting ceramic powder supporting region (1) is provided on the surface of the nonwoven fabric (2), and FIG. 8 is an end sectional view thereof.

A nonwoven fabric (2) made from polyamide core-sheath type composite filaments was prepared, in which only the overlapping points (intersection points) of the filaments were bonded and had numerous micropores. The properties of this nonwoven fabric were as follows.

Thickness 0.76 ■Tensile strength Length 3.4 kg/c Weight, Width 3.9 kg
/c Peng Breaking elongation: 5B (vertical), 38% (width) Tear strength: 1.5 kgf (vertical), 1.4 kgf (horizontal) Sewing strength: 3.5 kg/am (vertical), 5.1 kg/am (horizontal)
Water vapor permeability 08 B/cm"hr Air permeability 41.8 cc/cm"/sec (0,98
mb) Abrasion resistance 3200 times (Dry), 18
00 (Wet) Sweat absorption 0.5 seconds 280% Dry explosion property 4 hF This nonwoven fabric (2) was embossed to form numerous recesses.

A coating solution is prepared by mixing a fine powder of synthetic cordierite-aluminum titanate far-infrared emitting ceramic in a solvent solution of an acrylic copolymer, and the coating solution is applied to the recesses on the surface of the nonwoven fabric (2) through a screen. The nonwoven fabric (2) was printed in scattered dots to form a supporting region (1) (see Figures 7 and 8), and the area of the supporting region (1) on the surface of the nonwoven fabric (2) was 15%. Even with this printing, the carrying area (1) is not raised, so the texture and feel of the nonwoven fabric (2) are more preferable than in Example 1, and the properties such as breathability, sweat absorption, and flexibility are There was almost no difference between before and after printing.

Next, the shock absorbing elastomer layer (3) used in Example 1 was laminated and adhered to the surface of the nonwoven fabric (2) on the installation surface side of the supporting area (1) using a polyester adhesive. As a result, the laminated sheet shown in FIG. 6 was obtained.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the laminated sheet of the present invention. FIG. 2 is a plan view when a far-infrared emitting ceramic powder supporting region (1) is provided on the surface of the nonwoven fabric (2), and FIG. 3 is an end sectional view thereof. FIG. 4 is an end sectional view showing another example of the A-layer sheet of the present invention. FIG. 5 is an end sectional view showing still another example of the laminated sheet of the present invention. FIG. 6 is an end sectional view showing another example of the Ti layer receipt of the present invention. FIG. 7 is a plan view when a far-infrared emitting ceramic powder supporting region (1) is provided on the surface of the nonwoven fabric (2), and FIG. 8 is an end sectional view thereof. (1)... Far-infrared emitting ceramic powder supporting area, (2)... Nonwoven fabric, (3)... Shock absorbing elastomer layer

Claims (1)

[Claims] 1. A supporting region (1) of far-infrared emitting ceramic powder is provided on the surface of the nonwoven fabric (2), and the nonwoven fabric (2)
A laminated sheet having a structure in which a shock absorbing elastomer layer (3) is laminated and integrated on the installation side of the carrying area (1) or the opposite side thereof. 2. The laminate sheet according to claim 1, wherein the shock absorbing elastomer layer (3) is made of a viscoelastic elastomer sheet having low hardness and low impact resilience. 3. The laminated sheet according to claim 1, wherein the supporting region (1) is formed in a designed shape so as to partially cover the surface of the nonwoven fabric (2). 4. The laminated sheet according to claim 1, wherein the nonwoven fabric (2) is a nonwoven fabric having numerous fine pores bonded only at the overlapping points of the fibers. 5. On the surface of a nonwoven fabric (2) having numerous micropores that are bonded only at the overlapping points of the fibers, a supporting region (1) of far-infrared emitting ceramic powder is provided so as to partially cover the surface of the nonwoven fabric (2). In addition to providing it in a design shape, the nonwoven fabric (
2) Carrying area (1) On the installation side or the opposite side,
A laminated sheet having a structure in which a shock absorbing elastomer layer (3) made of a viscoelastic elastomer sheet having low hardness and low rebound resilience is laminated and integrated. 6. The laminated sheet according to claim 1, which is used for applications in which it comes into contact with the human body directly or through clothing.