JP2019002114A - Stereo mesh-like compact - Google Patents

Abstract

To provide a stereo mesh-like compact capable of preventing attachment of saprophyte and emergence of abnormal odor by providing substance activity.SOLUTION: A stereo mesh-like compact is integrated through a process that a wire 1 made from thermoplastic resin bends and tangles and is fused at contact parts between wires. A piezoelectric powder 2 having substance activating function is mixed into the wire 1. When the stereo mesh-like compact is subject to pressure, friction, temperature change or others, piezoelectric effect and charging effect are caused by the substance activating function of the piezoelectric powder mixed into the wire 1, enabling the stereo mesh-like compact to be hygienically used for various usage. The piezoelectric powder 2 contains piezoelectric powder having piezoelectric property, conductive material having conductivity, and a holding material to hold the piezoelectric powder and the conductive material, thus the piezoelectric powder can exert piezoelectric effect and charging effect by substance activating property.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a three-dimensional network-like molded body formed by intertwining wires made of a thermoplastic resin.

By extruding a thermoplastic resin such as polyethylene as a number of wires from an extruder, bending the extruded wire in a loop shape and cooling the wire in a state where the wires are fused to each other, thereby forming a three-dimensional network Forming a molded body has been conventionally performed (for example, see Patent Documents 1 to 4).
Since the three-dimensional network-like molded body thus obtained has a structure having a void inside like a nonwoven fabric in which fibers are intertwined, as described in Patent Documents 1 to 4, the core material of the cushion is mainly used. It is used for building insulation and sound-absorbing building materials.
On the other hand, the present applicant is considering applying this three-dimensional mesh-shaped molded body to various uses different from the conventional ones. For example, an umbrella or a shade of a lighting fixture can be produced with a three-dimensional mesh-shaped molded body. (Refer to Patent Documents 5 and 6), and it is proposed to form a partition in a room with a three-dimensional mesh-like molded body formed into a plate shape.

JP 7-68061 A JP 2001-329630 A JP 2001-329631 A JP 2013-181117 A Design Registration No. 1494041 Design Registration No. 1494042

The applicant of the present invention is also studying application and development in applications that give material activity to a three-dimensional network-like molded body. That is, by applying pressure, friction, temperature change, etc. to this three-dimensional mesh-shaped molded body, material activity is given and attention is paid to the function using the obtained material activity, and development of a product having such a function is examined. For example, when sweat adheres to a mattress, a pillow or the like, various bacteria propagate by the sweat or a strange odor due to sweat is generated. In addition, when the window or the like is closed, the flow of air in the room is deteriorated and a smell peculiar to the room is generated.
An object of the present invention is to provide a three-dimensional network-like molded article that can impart substance activity and prevent the adhesion of various bacteria and the generation of a strange odor.

  The three-dimensional network-shaped molded article according to claim 1 of the present invention is a three-dimensional network-shaped molded body in which a wire made of a thermoplastic resin is bent and entangled and fused together at a contact portion between the wires. In this case, the wire is mixed with a piezoelectric powder body having a substance activation action.

  According to the three-dimensional mesh-shaped molded article according to the first aspect of the present invention, since the wire powder constituting the three-dimensional mesh-shaped molded article is mixed with the piezoelectric powder body having a material activity, When pressure, friction, temperature change, etc. are applied, the piezoelectric effect and charging effect are exerted by the substance activation action of the piezoelectric powder mixed in the wire, thereby sanitizing the three-dimensional network shaped product for various uses. It can be used. In addition, since this three-dimensional network shaped product is an aggregate of wire rods, it has a very large surface area with respect to the volume. Therefore, a piezoelectric powder having a material activity is exposed on the surface of the three-dimensional network shaped product A. Therefore, the material activity of the piezoelectric powder can be efficiently exhibited.

  In addition, the three-dimensional mesh-shaped molded body itself is formed by bending and entanglement of wire rods and fusion of the contact portions of the wire rods, and thus the three-dimensional mesh-shaped molded body itself is rich in breathability and elasticity. The shape increases the material activity of the piezoelectric powder body. In addition, since the wire rods are gathered in a mesh shape, the apparent density is small, the three-dimensional mesh-shaped molded body itself can be manufactured in a light weight, and can be easily carried.

  Moreover, in the three-dimensional mesh-shaped molded article according to claim 2 of the present invention, the piezoelectric powder body includes a piezoelectric powder having piezoelectric characteristics, a conductive material having conductive characteristics, the piezoelectric powder, and the conductive material. It is characterized by including the holding | maintenance material for doing.

  According to the three-dimensional network-like molded article of the present invention, since the piezoelectric powder body includes the piezoelectric powder, the conductive material, and the holding material for holding them, the piezoelectric powder body has material activity characteristics. Thus, the piezoelectric effect and the charging effect can be exhibited, and as a result, an antibacterial function, a deodorizing function, and the like can be imparted to the three-dimensional network-shaped molded body.

  Moreover, in the three-dimensional network-shaped molded article according to claim 3 of the present invention, the piezoelectric powder includes a piezoelectric polymer material, lead zirconate titanate ceramics, potassium niobate ceramics, barium titanate, tourmaline, Any of Rossell's salt or a combination of any two or more thereof, and the conductive material is any one of carbon graphite, copper, silver, gold and platinum, or a combination of any two or more thereof Further, the holding material is characterized in that any one of silicon oxide, silicon carbide and zeolite, or a combination of any two or more thereof is used.

  According to the three-dimensional mesh-shaped molded article according to claim 3 of the present invention, since the piezoelectric powder, the conductive material, and the holding material are predetermined materials, all of them do not adversely affect the human body. The piezoelectric powder body mixed in can have a desired material activity. In addition, this piezoelectric powder body exhibits a piezoelectric effect and a charging effect due to a substance activation action, and electrical energy is generated by such an effect and can be kept hygienic. It is possible to clean the skin, to maintain health and to burn fat by healing, and to repel pests such as mosquitoes.

  According to the three-dimensional mesh-shaped molded product of the first aspect of the present invention, since the piezoelectric powder having a substance-acting action is mixed in the wire of the three-dimensional mesh-shaped molded product, pressure is applied to the three-dimensional mesh-shaped molded product. By applying friction, temperature change, etc., the piezoelectric effect and charging effect are exhibited by the substance activation action of the piezoelectric powder body. As a result, the indoor air is cleaned and the healing effect is maintained for health and fat burning effect, etc. Pests such as mosquitoes can be repelled, and this three-dimensional mesh-shaped molded product can be used hygienically for various purposes. In addition, the three-dimensional network compact has a very large surface area with respect to volume, and the ratio of the piezoelectric powder exposed to the surface of the three-dimensional network compact is high, which makes the piezoelectric and charging effects of the piezoelectric powder efficient. Can be demonstrated well.

  According to the three-dimensional network-like molded article of the present invention, since the piezoelectric powder body includes the piezoelectric powder, the conductive material, and the holding material for holding them, the piezoelectric powder body has material activity characteristics. The piezoelectric effect and the charging effect can be exhibited by providing them.

  According to the three-dimensional mesh-shaped molded article of the present invention, since the piezoelectric powder, the conductive material and the holding material are predetermined materials, they do not adversely affect the human body and are safe. Can be used with heart.

  It is a perspective view which shows an example of the solid mesh shaped molded object which concerns on this invention.   It is the perspective view which expanded a part of wire rod used for the three-dimensional mesh-shaped molded object of FIG.   The figure which shows the experimental result in the melt | dissolution experiment of beef tallow.   The figure which shows the experimental result in the oxidation reduction experiment of water.

  Embodiments of the present invention will be described below.

  As shown in FIG. 1, the illustrated three-dimensional mesh-shaped formed body A is formed in a form in which a wire 1 made of a thermoplastic resin is bent and entangled, and is described in Patent Documents 1 to 4 described above. It can be obtained by molding by a method as described above. That is, when the molten thermoplastic resin is extruded as a plurality of wires 1 from a die of an extrusion molding machine, the extruded wire 1 is bent in a loop shape by a bending force. And since the plurality of wire rods 1 bent in a loop shape are entangled and thermally bonded at the portion where the wire rods 1 are in contact with each other, by passing it through a water tank while sandwiching it between rolls and cooling and solidifying it, It is possible to obtain a three-dimensional mesh-shaped molded body A in which the wire 1 is entangled at random in three dimensions.

Here, the thickness of the wire 1 can be adjusted by the diameter of the hole of the die of the extrusion molding machine through which the molten thermoplastic resin passes, and the number of the wire 1 extruded from the die of the extrusion molding machine can be adjusted. The apparent density (bulk density) of the three-dimensional mesh-shaped molded product A can be adjusted by setting or setting the thickness sandwiched between rolls. The diameter of the wire 1 and the apparent density of the three-dimensional mesh-shaped product A vary depending on the application of the three-dimensional mesh-shaped product A, but the diameter of the wire 1 is in the range of about 1 to 5 mm, and the apparent density of the three-dimensional mesh-shaped product A is A range of about 0.03 to 0.2 g / cm ³ is common. When the diameter of the wire 1 is less than 1 mm, or when the apparent density of the three-dimensional mesh-shaped product A is less than 0.03 g / cm ³ , a problem may occur in the strength of the three-dimensional mesh-shaped product A. On the contrary, when the diameter of the wire 1 exceeds 5 mm or when the apparent density of the three-dimensional mesh-shaped product A exceeds 0.2 g / cm ³ , the weight of the three-dimensional network-shaped product A becomes heavy, and the three-dimensional network There exists a possibility that the characteristic that the shaped molded object A is lightweight may be impaired.

  As the thermoplastic resin for molding the wire 1 of the three-dimensional network-shaped product A, any thermoplastic resin such as polyethylene, polypropylene, polylactic acid resin can be used, and these resins are three-dimensional network-shaped products. It can be used properly according to the purpose of A. A recycled thermoplastic resin can also be used.

  Referring also to FIG. 2, in the present invention, when forming the three-dimensional network-shaped molded body A as described above, the thermoplastic resin is blended with the piezoelectric powder body 2 having a material activity action in the thermoplastic resin. The piezoelectric powder body 2 is mixed in the wire 1 made of the material so as to exhibit the piezoelectric effect and the charging effect. In other words, a piezoelectric powder 2 having a substance-active action is mixed with a thermoplastic resin and put into an extruder, and the piezoelectric powder 2 having a piezoelectric effect and a charging effect is mixed with the thermoplastic resin in the extruder. The wire 1 shown in FIG. 2 can be formed by melt extrusion in a smelted state, and in such a state that the piezoelectric powder 2 having a piezoelectric effect and a charging effect is mixed using such a wire 1, The three-dimensional mesh-shaped molded product A can be molded.

  The piezoelectric powder body 2 includes a piezoelectric powder having piezoelectric characteristics, a conductive material that conducts electric charge, and a holding material for holding the piezoelectric powder and the conductive material. The piezoelectric powder body including the holding material exhibits a piezoelectric effect and a charging effect as will be described later, and can be applied to various products utilizing such piezoelectric characteristics and charging properties. Can be given an antibacterial function, a deodorizing function and the like. This piezoelectric powder body is formed by mixing piezoelectric powder, a conductive material and a holding material.

  Examples of the piezoelectric powder used in the piezoelectric powder body include piezoelectric polymer materials, lead zirconate titanate ceramics, potassium niobate ceramics, barium titanate, tourmaline, and Rossel salt, or any two of these. A combination of two or more can be used, and as the conductive material, for example, carbon graphite, copper, silver, gold and platinum, or a combination of any two or more of these can be used, Moreover, as the holding material, for example, any one of silicon oxide, silicon carbide, and zeolite, or a combination of any two or more thereof can be used.

  The piezoelectric powder body 2 may include a high dielectric material having high dielectric properties. As the high dielectric material, for example, silicon powder, quartz, or the like can be used.

  The piezoelectric powder body 2 has a high substance activation effect due to piezoelectric characteristics and charging characteristics, and also exhibits a piezoelectric effect and a charging effect due to the substance activation action. Air activated by the electrical energy generated by these effects is air. As well as being able to obtain a health maintenance effect and a fat burning effect as a healing effect, it is also possible to repel pests such as mosquitoes. In addition, since the piezoelectric powder body 2 has a feature that it expands and contracts when a voltage is applied and a voltage is generated when an impact is applied, it can be effectively applied to the shape of the three-dimensional mesh-shaped molded body A. For this reason, the piezoelectric powder 2 which has a substance activity action is mixed and used for the wire 1 which comprises the three-dimensional network shaped molded object A. FIG.

  When using the piezoelectric powder 2 having a material activity as a powder, the particle size of the powder is not particularly limited, but is preferably in the range of about 1 to 500 μm. If the particle size is less than 1 μm, it becomes difficult to uniformly knead with the thermoplastic resin. Further, if the particle size is more than 500 μm, the specific surface area becomes small, so that it is difficult to obtain a sufficient material activity (ie, piezoelectric effect, charging effect) and the strength of the wire 1 may be reduced. There is.

  Moreover, the range which contains the piezoelectric powder body 2 in the wire 1 can be about 1-30 mass%, and the range of 1-10 mass% is preferable. That is, when the total amount of the thermoplastic resin forming the wire 1 and the piezoelectric powder body 2 is 100 parts by mass, the piezoelectric powder body 2 can be blended in the range of about 1 to 30 parts by mass. It is preferable to set the mass range. When the content of the piezoelectric powder 2 having a substance active action is less than 1% by mass, the piezoelectric effect and the charging effect as the substance active action cannot be sufficiently exhibited. If the content exceeds 10% by mass, particularly exceeds 30% by mass, the strength of the wire 1 may be reduced.

  Further, regarding the content ratio (volume ratio) of the piezoelectric powder body 2, when the piezoelectric powder is 1, the content ratio of the holding material is 0.5 to 1.0, for example, and the content ratio of the conductive material is 0.1, for example. A range of 1 to 0.5 is preferred.

  As a component to be contained in the wire 1 made of a thermoplastic resin, various components can be used in addition to the piezoelectric powder 2 having a material activity. For example, it is possible to form the three-dimensional network shaped product A in various colors by containing a colorant such as a pigment. In this case, it is preferable to contain about 5 to 10% by mass in the wire 1. Moreover, a fragrance can be spread | diffused by making the wire 1 contain a fragrance | flavor etc.

  The three-dimensional mesh-shaped molded product A obtained as described above is a molded product in which the wire 1 made of a thermoplastic resin is bent and entangled and the wires 1 are fused together at a contact portion and integrated. Since a void is formed inside like a nonwoven fabric in which fibers are entangled, it has a characteristic that it can be formed with a small apparent density and light weight and has good air permeability, and has a three-dimensional shape as a whole. It can be formed as a body. Further, by adjusting the hardness of the thermoplastic resin forming the wire 1, a soft flexible molded body or a hard molded body can be formed. Therefore, the three-dimensional network-shaped molded product A can be processed into products for various uses utilizing these characteristics.

  In this three-dimensional network-shaped formed body A, since the piezoelectric powder 2 having a substance active action is mixed in the wire 1, the piezoelectric effect and the charging effect can be obtained by the substance active action of the piezoelectric powder 2. . Moreover, the three-dimensional mesh-shaped molded body A is an aggregate of the wire 1 and has a very large surface area with respect to the volume, and the piezoelectric powder 2 having a substance activation action has a high ratio of being exposed on the surface of the wire 1. Become. For this reason, the piezoelectric function (piezoelectric effect) and the charging function (charging effect) by the piezoelectric powder body 2 can be efficiently exhibited. Can be provided. As described above, since the three-dimensional mesh-shaped molded body A has a function due to a high piezoelectric effect and a charging effect, it is possible to develop a product applied to a wider range of uses.

  For example, a core material such as a cushion, a pillow, a mat for a bedding, or a cushion can be formed from the three-dimensional mesh-shaped molded body A. These core materials are generally used in a state of being wrapped in a cover cloth, but even if sweat or the like adheres to the three-dimensional mesh-shaped molded body A that forms the core material through the cover cloth, It is possible to prevent the propagation of various germs and the generation of a strange odor by the substance activation action (that is, the function by the piezoelectric effect and the charging effect) by the piezoelectric powder body 2 included in the wire 1.

  Further, by laying on the bed pad of the bedding, the fat burning effect can be exhibited by the piezoelectric effect / charging effect of the piezoelectric powder body 2 by sleeping on the three-dimensional mesh-shaped molded body A.

  Furthermore, the lamp shade and the interior upholstery can be formed of the three-dimensional mesh-shaped molded body A, or the building material such as the partition can be formed of the plate-shaped three-dimensional mesh-shaped molded body A. These are mainly used indoors, and the generation of odors in the room can be prevented by the piezoelectric effect and charging effect of the three-dimensional mesh-shaped product A.

  Further, for example, a shoe insole or a boot stand can be formed of the three-dimensional mesh-shaped molded body A. The insole is laid in the shoes, and the boot stand is inserted into the boots to hold the boots. In both cases, the odor in the shoes and the boots is affected by the piezoelectric effect of the three-dimensional mesh-shaped molded body A, charging. It can be prevented by the effect.

  Furthermore, for example, by installing the three-dimensional mesh-shaped molded product A on a portion where the wind from an electric fan, an air conditioner, or the like is provided for a pest such as a mosquito, the three-dimensional mesh-shaped molded product A has a high piezoelectric effect / charging effect. It can exert repellent effect against pests such as mosquitoes.

  In order to confirm the effect of the present invention, the following experiment was conducted. In this experiment, a three-dimensional network-like molded body was formed as follows. A lead zirconate titanate ceramic was used as the piezoelectric powder body, carbon graphite was used as the conductive material, silicon oxide was used as the holding material, and these were mixed to form a piezoelectric powder body. The content ratio (ratio by weight) in the piezoelectric powder body was 0.5 for the holding material and 0.1 for the conductive material, assuming that the piezoelectric powder was 1.

Also, polyethylene is used as the thermoplastic resin, 2% by weight of the piezoelectric powder body is blended with the polyethylene and mixed (2g of the piezoelectric powder body is blended with 98g of polyethylene), and this is put into an extruder. Then, a three-dimensional network-like molded body was formed by extrusion molding. The apparent density of this three-dimensional network shaped product was 0.1 g / cm ³ . This three-dimensional network-shaped molded body was cut into 100 mm (length) × 100 mm (horizontal) × 10 mm (thickness), and this was used as the three-dimensional network-shaped molded body of Example 1.

  The three-dimensional mesh-shaped molded body molded as described above was cut into a size of 100 mm (vertical) × 100 mm (horizontal) × 10 mm (thickness), and the cut one was obtained as the three-dimensional network-shaped molded body of Example 1. did. And the melt | dissolution experiment of beef tallow was done using the three-dimensional network-shaped molded object of this Example 1. In this beef tallow dissolution experiment, as shown in FIG. 3, two glass bottles were prepared, and about 10 g of beef tallow was put into each of these glass bottles. And after warming tap water to about 36 degreeC, 150 ml of each warmed tap water was put into these glass bottles. One glass bottle (left side in FIG. 3) is placed on the three-dimensional mesh-shaped product of Example 1 placed on the table, and the other (right side in FIG. 3) glass bottle is placed on the table as it is. In this state, the beef tallow was observed for 3 days at room temperature.

  The result of the beef tallow dissolution experiment was as shown in FIG. The beef tallow in the glass bottle placed on the three-dimensional mesh-shaped molded body of Example 1 began to dissolve in tap water, and when 3 days had passed, the beef tallow was slightly white and clouded. On the other hand, the beef tallow in the glass bottle just placed on the table was not changed and remained as it was. From this beef tallow dissolution experiment, by using the three-dimensional network-shaped molded body of Example 1, the piezoelectric powder body contained in this three-dimensional network-shaped molded body acts on beef tallow, and beef tallow dissolves in tap water due to its substance activity. I found out.

  The three-dimensional mesh-shaped molded body molded as described above was cut into a size of 200 mm (vertical) × 100 mm (horizontal) × 10 mm (thickness), and the cut one was obtained as the three-dimensional network-shaped molded body of Example 2. did. And the oxidation-reduction experiment of water was done using the three-dimensional network shaped molded object of Example 2. In this water oxidation-reduction experiment, two glass cups were prepared, and 150 ml of tap water was added to each of these glass cups.

  For one glass cup (the left side in each figure of FIG. 4), the three-dimensional mesh-shaped molded body of Example 2 is placed in tap water, and for the other glass cup (the right side in each figure of FIG. 4), The state of the redox potential of tap water was examined by leaving it for 3 hours in such a state. The redox potential of tap water was measured using a redox potential meter (model number: YK-23RP) sold by Sato Corporation.

  The results of this water oxidation-reduction experiment were as shown in FIG. In the tap water in the glass cup (the left side in FIG. 4) containing the three-dimensional mesh-shaped molded body of Example 2, the potential decreased with time, and the potential which was 550 mV at the start of the experiment was 3 hours later. Was reduced to 408 mV. On the other hand, in the tap water in the glass cup (the one on the right side in FIG. 4) in which nothing is added, the potential did not decrease and increased somewhat. From this water oxidation-reduction experiment, by using the three-dimensional network-shaped molded body of Example 2, the piezoelectric powder body contained in this three-dimensional network-shaped molded body acts on tap water, and the tap water is reduced by the substance activation action. It was found that

DESCRIPTION OF SYMBOLS 1 Wire 2 Piezoelectric powder body A Three-dimensional network-like molded object

Claims (3)

  It is a three-dimensional mesh-like molded body that is integrated by bending and entanglement of a wire made of a thermoplastic resin and being fused at a contact portion between the wires, and the wire has a piezoelectric powder body having a material activity action A three-dimensional network-like molded body characterized by being mixed.   2. The piezoelectric powder body includes a piezoelectric powder having piezoelectric characteristics, a conductive material having conductive characteristics, and a holding material for holding the piezoelectric powder and the conductive material. 3. A three-dimensional network-like molded product according to 1.   The piezoelectric powder is a piezoelectric polymer material, lead zirconate titanate ceramics, potassium niobate ceramics, barium titanate, tourmaline, Rossell salt, or a combination of any two or more thereof. And the conductive material is one of carbon graphite, copper, silver, gold and platinum, or a combination of any two or more thereof, and the holding material is made of silicon oxide, silicon carbide and zeolite. The three-dimensional network-like molded product according to claim 2, wherein any one or a combination of any two or more thereof is used.