JPS6262748A - Pad material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention is made of synthetic fiber, which is relatively thin and layered, yet has high heat insulation properties, and is particularly useful for clothing and furniture. This invention relates to pad materials that are put to practical use in the field.

[Conventional technology]

Practical pads are now commercially available that consist of multiple layers of padding made of synthetic fibers and are used as insulation. Pad materials used for clothing, furniture, etc. have a limited thickness for aesthetic reasons, and must also have high heat insulation properties. However, at present, a pad material suitable for satisfying these conditions has not yet been obtained.

[Problem that the invention seeks to solve]

The present invention is intended to provide a pad material that has significantly improved heat insulation properties, becomes more compact and easy to handle when made into a product, and is highly user-friendly when used in fields such as clothing and furniture. It is something.

However, a pad material having such properties must not only have high thermal insulation properties but also have softness, elasticity, and good feel.

[Means for solving problems]

The invention consists of a base layer obtained by carding a mixture of fibers containing polyester fibers and having siliconized fibers treated with a mixture of adhesive resin having a suitable consistency; Polymerized to form a soft elastic film, then calendered in a manner to reduce the initial thickness, and a kraft material is applied in a layer on at least one side of the resin-treated base layer. It is characterized by

[Action/Effect]

The advantages of the pad material according to the present invention are that it has significantly improved heat insulation properties, is easier to process than similar pads in practical use, and is favorable in terms of texture and flexibility. .

Preferably, the cladding layer is a polyurethane based on aromatic polyester dissolved in a solvent.

Furthermore, an extremely light and thin finishing layer may be applied to the surface of the cladding layer. This finishing layer is preferably based on cellulose resin (cellulose acetyl butyrate) and an acrylic polymer or acrylic copolymer that has been improved by adding a slip agent and an antiblocking agent and dissolved in an organic solvent. .

〔Example〕

An embodiment of the present invention will be described in detail based on the drawings.

The pad shown in the accompanying drawings consists of a layer (1 layer) formed of polyester fibers or a mixture of fibers with other properties (including natural fibers) treated with silicone.
), and this layer is carded and then calendered.

A cladding layer (2) having a thickness of 5 to 20 μm is laminated on at least one side of the layer thus obtained. This cladding layer (2) has high thermal insulation properties and does not block the elasticity, softness, insulation and transpiration properties of the pad itself, and at the same time improves processability in the manufacturing stage of the final product. It is made from a material that has remarkable elasticity.

This cladding layer (2) is preferably made of a polyurethane resin whose main ingredient is aromatic polyester dissolved in at least one kind of solvent. In particular, the resin is selected depending on the properties required by the usage conditions of the plastic product. In fact, its mechanical properties include good elasticity, expansion power,
It must be resistant to wear and tear, and the chemical properties must be resistant to light and to washing when washed with other things.

Practically speaking, the properties desired for the cladding layer are as follows:
It is as follows.

Mechanical properties: Tensile stress kg/c at 100% elongation 90-1
Tensile stress kg/cJ at 20300χ elongation 30
0~350 Expansion force kg/cot 650~
800 Elongation at break point χ 580~6
00 softening point 0200 ~ 220 embrittlement temperature ℃ -60 ~ -70 Shore hardness
A 80-90 General properties: Hydrolysis resistance Excellent solvent resistance
Good low temperature flexibility
A typical composition of the cladding layer (2) with excellent photostability is as follows.

PU resin (organic polyester in DFM) 35χTS
100 parts by weight DMF (dimethylformamide) 20 parts drying volume (
Dry content) 30χ The surface of the cladding layer improves the properties of the pad, such as thermal insulation and water impermeability, as well as appearance, feel, processability, etc., but has a negative impact on the evaporation ability of the entire pad. It is also possible to apply an extremely light finish N(3) that will not cause any damage.

The composition of this finishing layer (3) is usually based on an acrylic polymer or acrylic copolymer modified with a cellulose resin (cellulose acetyl butyrate) to which a slip agent and an antiblocking agent have been added and dissolved in an organic solvent.

Typical examples of suitable compositions for the finishing layer (3) are shown below in terms of their purity.

Paraloid B72 (product name manufactured by Rohm Antohas)
10.00 parts by weight Cellulose acetyl butyrate (553-04) (trade name manufactured by Eastern Chemical Products Co.) 3.00 parts by weight Cellulose acetyl butyrate (381-05) (trade name manufactured by Eastern Chemical Products Co.) 6.00 parts by weight Part colloidal silica 1.00 parts stearamide 0.02 parts by weight Toluene
40.00 parts by weight ethyl acetate
18.00 Jusatobe denatured alcohol 8. oO
[isobutyl acetate], 4. OO Jusatobu dry capacity (dry content) 20χ Viscosity cps 100-20
The cladding layer (2) and finishing layer (3) are usually applied to the zero layer (1) by a spreading process or by a known transfer spreading method. Use of this preferred transfer spreading method provides even better results and creates more controllable and reproducible manufacturing conditions.

In particular, depending on the availability of equipment, said finishing layer (3) can be applied to the product to be rotographed or flexographically printed using a suitably formulated solution. In practice, a product in which the base layer (1) is laminated with the cladding layer (2) and the surface finishing layer (3) forms a barrier layer that reliably blocks air from outside, but does not prevent transpiration. There isn't. These superimposed layers (2), (
3) is very elastic and soft, and any condensation formed inside the pad should not contribute to improving the product's hygiene.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the original layer, Figure 2 is a side sectional view when clad material is pasted on one side of the above layer, and Figure 3 is a side sectional view when a finishing layer is provided on one side of the kraft material of the above layer. FIG. (1)... Base layer, (2)... Clad material.

Claims (1)

[Scope of Claims] [1] Base layer (1) obtained by carding a mixture of fibers containing polyester fibers and having siliconized fibers treated with a mixture of adhesive resin having a suitable consistency. The base layer (1) is polymerized to form a soft elastic film and then calendered in such a way as to reduce the initial thickness, and at least one side of the resin-treated base layer is A pad material characterized in that a clad material (2) is pasted in a layered manner. [2] The pad material according to claim 1, wherein the resin is polyurethane whose main ingredient is aromatic polyester dissolved in at least one solvent. [3] The pad material according to claim 1 or 2, characterized in that an extremely light finishing layer (3) is applied to the surface of the cladding layer (2). [4] The finishing layer (3) is composed of an acrylic polymer or copolymer modified with a cellulose resin containing a slip agent and an antiblocking agent and dissolved in an organic solvent. The pad material described in range item [3]. [5] The cladding layer (2) attached to the resin-treated base layer (1) has a thickness of 5 to 20 μm,
The pad material according to any one of claims [1] to [4], characterized in that it is composed of a polyurethane resin based on aromatic polyester dissolved in a solvent. [6] The pad according to any one of claims [1] to [5], wherein the solution used for the cladding layer (2) has the composition shown below. Material. PU resin (organic polyester in DFM) 35% TS 100 parts by weight DMF 20 parts by weight Dry capacity 30% [7] Claims characterized in that the finishing layer (3) has the composition shown below. Items [3] to [
6] The pad material according to any one of item 6]. Paraloid B72 10.00 parts by weight Cellulose acetyl butyrate (553-04) 3.0
0 parts by weight Cellulose acetyl butyrate (381-05) 6.0
0 parts by weight Colloidal silica 1.00 parts by weight Stearamide 0.02 parts by weight Toluene 40.00 parts by weight Ethyl acetate 18.00 parts by weight Denatured alcohol 8.00 parts by weight Isobutyl acetate 14.00 parts by weight Dry volume 20% [ 8] The cladding layer or layers (2) and the finishing layer or layers (3) are applied to the base layer (1) by a spreading method or a transfer spreading method known per se. The pad material according to any one of claims [1] to [7], characterized in that: [9] Claims [3] to 3, characterized in that the finishing layer (3) is applied to a product to be rotograph-printed or flexographic-printed using an appropriately formulated solution. [8] The pad material according to any one of the items.