JP2536521Y2 - Insertable or fixed insoles for shoes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insert type or fixed type insole of shoes having both a heat retaining effect and an antibacterial deodorizing effect. More specifically, the present invention provides an insole for shoes exhibiting a heat retaining effect and an antibacterial deodorizing effect by using an adhesive in which both ceramic fine particles and chitosan organic acid salt fine particles are blended.

[0002]

2. Description of the Related Art Conventionally, as a shoe insole having both a heat retaining effect and an antibacterial deodorizing effect, a thermal insulating effect is produced by ceramics and the like, and an antibacterial deodorant such as a metal or a quaternary ammonium salt is compounded. Some of them use adhesives. on the other hand,
Japanese Patent Application Laid-open No. Sho 53
No. 7,471, and JP-A-53-127824 are disclosed as examples of use against soil diseases. The concept of using ceramics and chitosan together is disclosed in
Japanese Patent No. 160972 discloses an antibacterial fiber obtained by treating a fiber with an aqueous solution of fine ceramic particles, then immersing the fiber in a solution of an antibacterial agent such as an organic acid salt of chitosan, and then drying.

[0003]

In the above prior art, the antibacterial fiber disclosed in JP-A-2-160972 may be used as a fabric for the insole of a shoe. Since the method of adding the organic acid salt is attached to the fiber in the form of a solution, there is a limit in increasing the amount of addition, and it is difficult to obtain a desired antibacterial effect, and the process of fabricating the fabric is complicated. Has the disadvantage that it cannot be avoided.

[0004]

According to the present invention, an adhesive containing fine particles of ceramics and fine particles of organic acid salt of chitosan is applied to one surface of an elastic flooring made of a thermoplastic resin, and then the fabric is laminated. The present invention relates to an insert type or fixed type insole for shoes.

As the elastic flooring material of the thermoplastic resin used in the present invention, a protrusion may be provided on the insole if necessary, so that it has thermoplasticity at a relatively low temperature of 100 ° C. or less.
Any resin having cushioning performance as an insole for shoes may be used, but it is particularly preferable to use an ethylene vinyl acetate copolymer having a thickness of 2 to 5 mm from the viewpoint of shape retention and usability after molding.

In the present invention, the ceramic fine particles used in the adhesive have an average particle diameter of 10 μm or less from the viewpoint of the adhesiveness of the adhesive and the heat retaining effect. If the addition amount is too small, the heat retaining effect is reduced, and if it is too large, the adhesive effect of the adhesive is reduced. Therefore, it is preferable to set the addition amount to 15 to 50 g per 100 ml of the adhesive.

The chitosan organic acid salt fine particles incorporated into the adhesive according to the present invention are made of chitosan acetate fine particles or chitosan lactate fine particles having an average particle diameter of 30 μm or less from the viewpoint of adhesiveness of the adhesive and antibacterial deodorizing effect. Particles, fine particles of chitosan formate, etc. are used. When the amount of addition is too small, the antibacterial deodorizing effect is reduced, and when the amount is too large, the adhesive effect of the adhesive is reduced. Is preferred. Such chitosan organic acid fine particles can be obtained by the method disclosed in Japanese Patent Publication No. 2-12961. That is, it is produced by spray-drying a chitosan organic acid solution.

[0008] The adhesive used in the present invention may be any adhesive that does not dissolve the ceramic fine particles and the chitosan organic acid salt fine particles among the commonly used adhesives. It is preferable to use a chloroprene-based adhesive. At this time, if necessary, a commonly used curing agent can be used in combination.

If the amount of the adhesive compounded with the ceramic fine particles and the chitosan organic acid salt fine particles used in the present invention is too large, the working efficiency is reduced, and when too small, the heat retaining effect and the antibacterial deodorizing effect are reduced. Therefore, it is preferable to set the range of 0.3 to 1 ml / m ² with respect to the elastic flooring material.

As the cloth used in the present invention, a synthetic fiber such as nylon or tetron, a knitted fabric made of cotton, wool, hemp, or the like is used. In particular, the adhesive layer is formed between the fibers of the knitted fabric. Since a larger area in contact with the human body is more advantageous in terms of a heat retaining effect and an antibacterial deodorizing effect, a knitted fabric having a coarse basis weight is preferable.

[0011] The present invention is a shoe insole in which a thermoplastic elastic flooring is coated with an adhesive comprising fine particles of ceramics and fine particles of an organic acid salt of chitosan, and a fabric is laminated and bonded. In this case, the protrusion is provided by heating the resin of the elastic flooring material to a temperature at which the resin of the elastic flooring material has plasticity, and deforming the resin with an embossing machine. The final step is to cut into footprints, but this is not particularly limited, and a normal cutting method can be used. Synthetic rubber can also be used in place of the resin of the elastic flooring.

In FIG. 1, reference numeral 1 denotes an elastic flooring material, 2 denotes an adhesive layer, 2a denotes an adhesive thereof, 2b denotes ceramic fine particles to be mixed, and 2c denotes chitosan organic acid salt fine particles. Reference numeral 3 denotes a cloth adhered to the surface, and 3a denotes a protrusion on the surface. FIG. 2 is a schematic view of the insole of the present invention when it is inserted into a shoe, and is indicated by reference numeral a. FIG. 3 is a schematic view of a case where the insole of the present invention is inserted into a basement tabi, and is indicated by reference numeral b. FIG. 4 is a schematic view of the case where the insole of the present invention is fixed to the sandals, and the insole is indicated by reference numeral c. S indicates the entire sandal. It should be noted that the insole of the present invention can be fixed to the basement tabi as well as the sandals or the tread surface of the shoes.

[0013]

Embodiment 1 An embodiment of the present invention will be described with reference to FIG. 1 is an elastic flooring material made of ethylene vinyl acetate copolymer, 2 is a layer made of a chloroprene-based adhesive 2a containing ceramic fine particles 2b and chitosan organic acid salt fine particles 2c, 3 is a nylon knitted fabric. This is a finished fabric. A specific manufacturing method will be described below. Chloroprene-based adhesive (manufactured by Nortape Industries Co., Ltd .: Trade name "M")
-21 ") 150 g of adhesive fine particles (manufactured by East Aenta Prize Co., Ltd.) in 500 ml and chitosan acetate fine particles having an average particle size of 10 μm (Fujibo Industries, Ltd.) in 500 ml
(Trade name: "Marine kite FCAB") 150 g was added and mixed, and the mixture was 30 cm wide, 100 cm long and 4 m thick.
m of ethylene vinyl acetate copolymer. Next, this was treated at 55 ° C. for 3 minutes, then a nylon knitted fabric was laminated on the surface of the adhesive and stuck together, further treated at 65 ° C. for 3 minutes, and pressed to 120 kg / cm ² for molding. This was cut into a footprint using a cutting machine to obtain a shoe insole according to the present invention. The product of the present invention obtained here contains fine particles of ceramics having a heat-retaining effect and fine particles of chitosan organic acid salt having an antibacterial and deodorizing effect in the layer of the adhesive 2, so that the nylon 2 can be used in the shoe. When used as a floor, these effects are exhibited.

[0014]

Example 2 In the same manner and in the same manner as in Example 1, the amount of chitosan organic acid salt fine particles was reduced to 0, 25, 75,
150, 250, 375 g (0, 5, 15, 30, 50, 75 g respectively for 100 ml of adhesive), and the amount of ceramic fine particles was 0, 25, 75, 150, 250, 3
75 g (0, 5, 15,
30, 75 g), and 11 sets were prepared for each. The following [Test 1] and [Test 2] were performed on these samples.

[0015]

[Test 1] After sterilizing one set of each sample, the diameter was 20m.
m, cut into 5 circles each, and the Hello Test (AATCC
Test method 90-1982 mutatis mutandis) was performed. As the test bacteria, Staphylococcus aureus (Staferococcus aureus FDA 209P (ATCC 6538P) = Stap)
hylococcus. aureus FDA 209
P (ATCC 6538p) was used. After this was cultured at 37 ° C. for 24 days, a transparent zone around each sample was observed, and evaluated in three steps based on the following criteria. Table 1 shows the results.

Evaluation criteria 1: No inhibitory effect on bacteria could be confirmed at all. 2: The effect of suppressing bacteria was slightly confirmed. 3: The inhibitory effect on bacteria was clearly confirmed.

[Table 1]

As shown in Table 1, the product of the present invention in which chitosan acetate fine particles were added in an amount of 15 g or more per 100 ml of the adhesive and ceramic fine particles in an amount of 15% or more per 100 ml of the adhesive were the microbial flora. It is clear that there is an effect of suppressing spread. However, when the chitosan acetate fine particles were added in an amount of 75 g per 100 ml of the adhesive and when the ceramic fine particles were added in an amount of 75 g per 100 ml of the adhesive, the antibacterial deodorizing effect was confirmed, but the adhesiveness was significantly reduced. Was something.

[0018]

[Test 2] For 10 samples of each sample, 10 monitors were tested every 10 days, and the antibacterial deodorizing property, heat retaining property and adhesiveness (durability) were evaluated according to the following criteria. The average values of the ten monitors are shown in Tables 2, 3, and 4.

Evaluation criteria 1: bad (no effect) 2: normal (some effect) 3: good (effective)

[Table 2]

[Table 3]

[Table 4]

As shown in Tables 2, 3, and 4, the chitosan acetate fine particles of the present invention were added to 100 ml of the adhesive at a ratio of 1
It is clear that 5, 30, 50 g was added, and 15, 30, 50 g of ceramic fine particles were added to 100 ml of the adhesive, which was excellent in antibacterial deodorizing property, heat retaining property, and adhesiveness (durability). It is. In addition, the mixture containing no chitosan organic acid salt fine particles and the adhesive 100
The addition of 5 g per ml or the addition of no ceramic fine particles and the addition of 5 g per 100 ml of the adhesive are inferior in antibacterial properties or heat retention,
7 particles of chitosan acetate fine particles per 100 ml of adhesive
Adhesive 1 with 5g added and ceramic fine particles
When 75 g was added to 00 ml, the adhesiveness was significantly reduced.

[0021]

[Effect of the Invention] The insole of the present invention has a high activity of a heat retention effect and an antibacterial deodorizing effect by mixing and blending ceramic fine particles and a chitosan type fine particle having a heat retention effect and an antibacterial effect in an adhesive. At the same time, since these agents are held in the adhesive, the present invention exerts a great effect in terms of sustaining the effect.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the insole of the present invention.

FIG. 2 is a sketch of inserting the insole of the present invention into a shoe.

FIG. 3 is a sketch of the case of inserting the same into the baseball tabi.

FIG. 4 is a sketch when fixed to sandals.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic flooring material 2 Adhesive layer 2a Adhesive 2b Ceramic fine particles 2c Chitosan organic acid salt fine particles 3 Cloth 3a Sticks a Sole for inserting shoes b Insole for inserting underground socks c Insole for fixing sandals S sandals

Claims (1)

(57) [Scope of request for utility model registration] Claims: 1. An insert for shoes, comprising applying an adhesive containing fine particles of ceramics and fine particles of organic acid salt of chitosan to one surface of a thermoplastic elastic flooring material, and then laminating a cloth. Type or fixed type insole.