JP3924403B2 - Liquid core for functional agents - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid absorbent core for absorbing functional agents such as insecticides, deodorants, and fragrances to evaporate the absorbed functional agents around.
[0002]
[Prior art]
Conventionally, various liquid absorbent cores for evaporating functional agents such as insecticides, deodorants, and fragrances around are used. For example, wool felt, non-woven fabric, asbestos and the like have been used as the liquid absorbent core as proposed in Japanese Utility Model Publication No. 45-29244. However, when these are used, it is difficult to evaporate the functional agent stably for a relatively long time because only the solvent in the chemical solution is volatilized first, or the wicking of the liquid absorption core occurs. is there. Moreover, since it is not a rigid body material, it is inferior in the shape retainability as a liquid absorption core, and has a big problem at the point of designing a compact liquid absorption core.
[0003]
JP-A-4-117303 discloses a mixed powder comprising inorganic powders such as talc, silica and mica, organic substances such as wood powder and synthetic resin, and inorganic binders such as kaolin clay and bentonite. It has been proposed that firing is performed at a temperature of 600 to 2000 ° C., an organic substance is burned in the firing process, and a gas such as carbon monoxide or carbon dioxide is generated to form continuous pores in the liquid absorbent core.
[0004]
In addition, JP-A-11-196747, JP-A-4-92873 and the like disclose combustible materials made of alumina, silica, zirconia, talc, mica, ceramic raw material powder such as kaolin clay, montmorillonite clay, graphite, and the like. It has also been proposed to produce a porous ceramic body suitable as a liquid-absorbent core of an insecticide by molding and firing a kneaded product containing a conductive powder, a binder and a kneading liquid.
[0005]
However, after adding a paste to inorganic powder such as silica, talc, clay, etc. and wood powder or charcoal powder and molding by extrusion, etc., the liquid absorbent core that is dried and has a specific oil absorption rate is The mixing ratio of various materials to achieve a constant oil absorption rate is complicated, and deformation is likely to occur during drying, making it difficult to set production conditions for producing stable quality, and inexpensive. There is a problem in that it is not possible to easily provide a liquid absorbent core. In addition, the bending strength of the liquid absorbent core is not always sufficient, and there is a problem that care must be taken during handling.
[0006]
Further, JP-A-9-99048 discloses a fragrance characterized by comprising a liquid absorbent core having a porosity of 25% to 35% formed by bonding and molding a synthetic resin fiber top or sliver with a thermoplastic resin. Liquid absorption wicks for heat evaporation have been proposed.
[0007]
However, since the liquid absorbent core is formed by bonding the top of the synthetic resin fiber or the entire sliver constituting the liquid absorbent core with a thermosetting resin, the thermosetting resin of the adhesive fills the gaps in the fiber group. Therefore, there are few communication paths inside the liquid absorbent core, and clogging is likely to occur during use.
[0008]
In order to solve such a problem, in JP-A-11-169449, the top or sliver-like polyethylene terephthalate fiber in the surrounding portion is densified and bonded with an adhesive made of polyurethane resin to form a surface layer. A liquid absorbent core for heating and evaporating a fragrance has been proposed.
[0009]
By the way, in the conventional liquid absorption core formed in this way, only the surface layer of the top or sliver-like synthetic resin fiber is densified by an adhesive or the like. This is because, in the state without such a surface layer, it is not possible to take the form of the liquid absorption core, and this surface layer takes the form of the liquid absorption core. In this liquid-absorbing core, no adhesive is used in portions other than the surface layer, so the top or sliver-like synthetic resin fiber has a high porosity, and the fragrance rises better due to capillary action. It has the advantage of being able to.
[0010]
However, this liquid absorbent core has a feature that the surface layer is provided only on the side surface of the liquid absorbent core and is not provided at the front end portion and the lower end portion of the liquid absorbent core. Therefore, in this liquid-absorbing core, the function of absorbing the functional agent is held by the top or sliver-like synthetic resin fibers constituting the central portion of the liquid-absorbing core.
[0011]
That is, in the liquid absorbent core having such a surface layer, a top or sliver-like structure constituting the central portion of the liquid absorbent core is formed at room temperature and in an atmosphere heated to evaporate the functional agent to a high temperature. It is formed in order to achieve the purpose of bundling synthetic resin fibers and maintaining the strength of the liquid absorbent core. In addition, in such a liquid-absorbing core, the liquid-absorbing efficiency of the functional agent inevitably deteriorates, so that the transpiration efficiency also decreases. Therefore, in order to enable the functional agent to evaporate quickly from the tip side surface portion of the liquid absorbent core and to absorb the functional agent quickly from the lower end side surface portion for this reason, the tip end portion and the lower end of the liquid absorbent core The surface layer cannot be provided on the part.
[0012]
With respect to this conventional liquid absorbent core, the top or sliver of synthetic resin fiber is put into a mold and then compressed, and the periphery of the molded body is heated by electric heat, so that the dense surface layer as described above is formed. It is formed. Alternatively, the surface layer is formed by bonding top or sliver-like synthetic resin fibers with an adhesive made of polyurethane.
[0013]
However, because of the structure of such a liquid absorbent core, it is difficult to set production conditions for producing a product of stable quality, and it is difficult to mold the liquid absorbent core with an automatic machine, so mass production is difficult. Since it is difficult, it is difficult to reduce manufacturing cost.
[0014]
In addition, this conventional liquid absorbent core is essentially intended to have a shape retention function as a liquid absorbent core by a surface layer made of a synthetic resin fiber top or sliver having an extremely small elastic modulus (elastic modulus). There is a problem that the shape of the liquid-absorbent core itself is limited. That is, a liquid absorbent core having a surface layer made of a synthetic resin fiber top or sliver having a very small elastic modulus (elastic modulus) essentially compensates for the disadvantage that the elastic modulus (elastic modulus) is extremely small. it is necessary to increase the moment, this order must be absolutely to increase the cross-sectional area of the wick, there is a problem in manufacturing a compact wick.
[0015]
[Problems to be solved by the invention]
The liquid absorbent core of the functional agent of the present invention has been made in view of the problems of the conventional liquid absorbent core described above. That is, the problem to be solved by the present invention is that “the functional agent can be stably evaporated over a relatively long period of time, and it is easy to produce a product of stable quality, The core has sufficient bending strength and shape retention strength, does not cause clogging during use, can be mass-produced at low cost, and has a liquid absorption core that can take a compact shape. To provide.
[0016]
[Means for Solving the Problems]
Here, according to the present invention, a rod-shaped liquid absorbent core comprising a core material and a sheath material for absorbing a functional agent and evaporating the functional agent to the surroundings,
The sheath material is composed of a fiber material composed of a blade, a woven fabric, a knitted fabric, a felt, or a nonwoven fabric, and has a liquid absorbent core. Absorption side Cut fibers that make up the sheath at the cut end Ends of Is provided with a functional agent liquid-absorbing core characterized by being subjected to a fusion treatment and / or an adhesion treatment.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the liquid absorbent core of the present invention will be described in detail with reference to the drawings.
The liquid absorption core of the present invention is formed of a core material and a sheath material, and the sheath material is formed so as to cover the outer peripheral surface of the core material. 1 is a perspective view illustrating various embodiments of the core material C according to the present invention. The core material C has a straight shape as illustrated in FIG. 1- (a), and FIG. ) And a rod-like shape such as a stepped groove shape as shown in FIG. 1- (c). Further, the cross-sectional shape of the core material C may be an ellipse, a quadrangle, a pentagon, or the like in addition to the circle illustrated in FIG.
[0018]
In the present invention, the core material does not necessarily have a function for absorbing the functional agent, and the sheath material may have a liquid absorbing function. In such a case, the core material has a shape maintaining function as a liquid absorption core.
Furthermore, as a material of the core material, for example, a thermoplastic and / or thermosetting synthetic resin can be used. The core material is preferably formed of a synthetic resin having a heat resistance of 130 ° C. or higher because the functional agent is evaporated from the heated upper liquid-absorbing core to the surroundings.
[0019]
Examples of such thermoplastic resins include polyethylene (PE resin), polypropylene (PP resin), polyolefin resins such as polybutene, polymethyl methacrylate resin, polystyrene, rubber-modified polystyrene (HIPS resin), styrene-acrylonitrile copolymer Styrene such as coalescence (AS resin), acrylonitrile-styrene-butadiene copolymer (ABS resin), acrylonitrile-acrylic rubber-styrene copolymer (AAS resin), acrylonitrile-ethylenepropylene rubber-styrene copolymer (AES resin) Resins, polyester resins such as polybutylene terephthalate (PBT resin) and polyethylene terephthalate (PET resin), aliphatic polyamide resins such as nylon 6 and nylon 66, and aromatic polyamides such as polyphthalamide Resin, polycarbonate resin, polyphenylene oxide (PPO) resin, polyvinyl chloride resin, polyoxymethylene resin, polyphenylene ether resin, polysulfone resin, polyethersulfone resin, polyphenylene sulfide resin, polyketone resin And polyarylate resins, polyimide resins, polyamideimide resins, fluorine resins, and the like.
[0020]
In addition, as a thermosetting resin, an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, an acrylic resin, an epoxy resin, a vinyl ester resin, a phenol resin, a curable cycloolefin resin (for example, known under the trademark “Meton”), Examples thereof include phenol resin, curable polyurethane resin, polyimide, diallyl phthalate resin, aralkyl ether resin, and the like.
[0021]
In addition, in order to reinforce the shape retention function as the liquid absorbent core, the thermoplastic resin or thermosetting resin may be reinforced with a fibrous reinforcing material, a powdery reinforcing material, or the like as a reinforcing material for the core material. it can.
[0022]
In this case, examples of the fibrous reinforcing material include glass fiber, ceramic fiber, polyester fiber, vinyl chloride / acrylonitrile copolymer fiber, carbon fiber, steel fiber, aluminum fiber, boron fiber, and combinations of two or more thereof. .
[0023]
At that time, the reinforcing fiber is a short of the above kind. fiber So The Further, it may be a fiber bundle of long fibers, or may be a woven fabric, knitted fabric or non-woven fabric of these fibers.
[0024]
In addition, as the powdery reinforcing material, glass powder and what is generally called inorganic filler, silica, alumina, titanium oxide, iron oxide, zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, oxide Examples include beryllium, pumice, talc, kaolin, mica, sericite, borax, aluminum hydroxide, magnesium hydroxide, aluminum carbonate, calcium carbonate, barium sulfate, ammonium sulfate, calcium sulfite, and combinations of two or more thereof.
[0025]
The core material of the present invention formed of the above-mentioned thermoplastic and / or thermosetting resin is obtained by injection molding or injection reaction molding one or more of the above-mentioned thermoplastic and / or thermosetting resins. Can be manufactured. At that time, if a thermoplastic synthetic resin is used, it can be produced by continuously extruding into a rod shape by a melt extruder and cutting them into predetermined dimensions. At that time, short fibers such as glass fiber, ceramic fiber, polyester fiber, vinyl chloride / acrylonitrile copolymer fiber, carbon fiber, steel fiber, aluminum fiber and boron fiber should be kneaded in the thermoplastic synthetic resin. You can also.
[0026]
Furthermore, for example, a base material composed of one or more inorganic powders and / or organic powders, and one in which a binder is added to one or more inorganic powders and / or organic powders are compression-molded, or the above base material is bound to a binder. In addition, it is possible to adopt a manufacturing method such as extrusion molding or firing these.
[0027]
Here, as the base material composed of one or more of the above inorganic powder and / or organic powder, for example, clay, talc, kaolin, diatomaceous earth, gypsum, perlite, bentonite, acid clay, volcanic rock, calcium carbonate, magnesium carbonate, Hydrogen carbonate, calcium phosphate, calcium hydrogen phosphate, anhydrous calcium hydrogen phosphate, calcium lactate, aluminum silicate, magnesium silicate, colloidal silica, lactose, sucrose, starch, CMC, MC, hydroxypropyl starch, magnesium alumina hydroxide, Examples include magnesium aluminate metasilicate, glass fiber, rock wool, sepiolite, clay, coke, graphite, wood flour, cellulose, pulp, linter, polyethylene, polypropylene, polyphenylene sulfite, polyamide, etc. That.
[0028]
Further, the binder includes various cellulose derivatives such as CMC, MC and hydroxyethyl cellulose, gelatin, gum arabic, polyvinyl alcohol (PVA), starch and derivatives thereof, pullulan, casein and derivatives thereof, alginic acid and derivatives thereof, curdlan. , Agar, carrageenan, juran gum, succinoglucan, fureletane, caraya gum, akashiya gum, tamarind gum, acrylamide polymer, dragant gum, dextran, albumin, soy protein, polyvinyl ether, polyethyleneimine, nigeran, rutinic acid, linmannan, levan , Pectin, polyvinylpyrrolidone, collagen, polyvinyl methacrylate, sodium chondroitin sulfate and other thickeners, water-soluble polymers, polypheny Insanphite (PPS), polyvinyl butyral (PVB), acrylic resin, polyamide (PA), polypropylene (PP), polyethylene (PE), ethylene vinyl acetate copolymer (EVA), phenol resin, melamine resin, urea Phosphoric acids such as resin, tar, pitch, urethane, wax, wax emulsion, colloidal silica, magnesium aluminate metasilicate, water glass, aluminum phosphate, sodium phosphate, calcium hydrogen phosphate, sodium phosphate, aluminum hydrogen phosphate Salts and the like can be exemplified, but not particularly limited thereto.
[0029]
When the core material of the liquid absorbent core is manufactured from the materials described above, one or more inorganic powders such as ceramic, diatomaceous earth, talc, perlite, silica, kaolin, etc. are added to starch, carboxymethyl cellulose. Some that are hardened and fired using an organic binder such as polyvinyl alcohol become porous and can absorb the functional agent by capillary action.
[0030]
However, as described above, the core material of the liquid-absorbing core of the present invention may or may not have the liquid-absorbing function of such a functional agent. However, from the viewpoint of reducing the manufacturing cost, it is not necessary to make the core material porous unlike a known liquid absorbent core.
[0031]
Next, the “sheath material” covering the outer peripheral surface of the “core material” described above will be described below.
Examples of the sheath material of the present invention include fiber aggregates composed of one or more fibers such as natural fibers such as cotton, synthetic fibers such as polypropylene, polyester, nylon, and aramid, and inorganic fibers such as glass fibers and carbon fibers. be able to. Of these, a fiber assembly made of synthetic fibers such as polypropylene, polyester, nylon, and aramid having a heat-resistant temperature of 130 ° C. or higher is particularly necessary in order to evaporate the absorbed functional agent around by heating. preferable.
[0032]
The sheath material of the present invention constituted by such a fiber assembly is constituted by a fiber material made of a blade, a woven fabric, a knitted fabric, a felt, or a nonwoven fabric. At that time, it is also possible to adjust the liquid absorption speed by applying a surfactant treatment to the fiber material. Further, the surface of the sheath material may be further covered with varnish or the like, or the sheath material may be subjected to functional processing such as hydrophilic processing. In the present invention, the sheath material is mainly responsible for the function of absorbing the functional agent.
[0033]
In the liquid absorbent core composed of the core material and the sheath material described above, the sheath material may be joined to the core material by heat fusion or an adhesive. However, in the present invention, it is not always necessary to add such an adhesion treatment because the manufacturing cost of the liquid absorbent core is increased.
[0034]
In the liquid absorbent core of the present invention, the method for coating the core material with the sheath material is not particularly limited. However, the sheath is made of one or more kinds of fiber materials such as synthetic fibers such as polypropylene, polyester, nylon, aramid, etc., using a known round punching string machine as proposed in JP-A-57-5955. It is preferable to use a technique in which the outer peripheral surface of the elongated core material is continuously covered with the sheath material while the material is formed by the blade. Other conventional techniques for covering the outer peripheral surface of the elongated core material with a fiber material made by using a string making machine as in this prior art include, for example, Japanese Patent Laid-Open Nos. 54-120767 and 56. JP-A-73151, JP-A-57-5955, JP-A-61-252156, JP-A-07-73736, JP-A-10-158965, and the like.
[0035]
However, among these prior arts, particularly proposed in Japanese Patent Laid-Open No. 10-158965, “the core to the braid opening where formation of a sleeve-like string body is started by a plurality of continuous braiding linear members” is proposed. In the method of supplying a material and covering the periphery of the core material with the sleeve-like string body, the braided opening is opened upwardly with a hollow restricting member, and each core material group having a fixed length is opened to the opening. Is more preferable in that the core material is intermittently supplied and the sleeve-like cord body is coated on the outer peripheral surface of each of the fixed-length core material groups.
[0036]
The liquid absorbent core of the functional agent according to the present invention is, as described in claim 1 of the claim, “cut fibers constituting a sheath material at the cut end of the liquid absorbent core. Ends of It is one of the main features that “is subjected to fusion treatment and / or adhesion treatment”. Therefore, this major feature of the present invention will be described below. Nitsu The embodiment will be specifically described with reference to the drawings.
[0037]
FIG. 2 is an explanatory view illustrating a method for producing a rod-shaped liquid absorbent core according to the present invention.
In FIG. 2, reference numeral 1 denotes a precursor material for the rod-shaped liquid-absorbing core of the present invention. The precursor material 1 is, for example, the constant material illustrated in FIG. 1 as proposed in Japanese Patent Laid-Open No. 10-158965. The core material C cut into a long length is intermittently supplied to a string making machine, and the supplied core material C is continuously covered with a sheath material. At this time, the precursor material 1 is formed with a core material covering portion 1A covered with a core material C cut to a predetermined length and a core material non-covering portion 1B not covered with the core material C.
[0038]
Reference numerals 2a, 2b, 3a and 3b denote a group of feed rollers for continuously sending the precursor material 1 to the cutting means 4, and a pair of feed rollers 2a and 2b and a pair of feed rollers 3a and 3b are provided. The intermittent feed roller. Therefore, the precursor material 1 is sandwiched between the intermittent feed rollers 2a and 2b and the intermittent feed rollers 3a and 3b, intermittently sequentially fed to the cutting means 4, and cut one after another.
[0039]
In addition, although the embodiment which sends only one precursor material 1 to the cutting | disconnection means 4 is described in FIG. 2, the method of sending several precursor material 1 in parallel and cutting these simultaneously may be employ | adopted. . Further, the feeding means for continuously sending the precursor material 1 to the cutting means 4 is not limited to the method by the roller groups 2a, 2b, 3a and 3b described in the embodiment of FIG. For example, the precursor material may be placed on a conveying means such as a rotating roller or a moving belt and transferred.
[0040]
Thus, the precursor material 1 moved to the cutting position by the cutting means 4 is cut by the cutting means 4 at a predetermined position of the core material non-covered portion 1B. At this time, the cutting blades 4a and 4b constituting the cutting means 4 can be heated with a heater to perform the fusion treatment by performing cutting while melting the cutting fiber ends constituting the sheath material. .
[0041]
2 exemplifies mechanical cutting means for cutting the precursor material 1 with the cutting blades 4a and 4b provided on the upper and lower sides of the cutting means 4, but the cutting means 4 includes these mechanical cutting means. In addition, laser cutting means can be used. Embodiments relating to this laser cutting will be described in detail later.
[0042]
By the way, when the precursor material 1 is cut using a mechanical cutting means, the sheath material may be cut without heating the cutting blades 4a and 4b with a heater. However, in that case, an adhesive is supplied to the core material uncoated portion 1B by supplying an adhesive to the cut portion of the core material uncoated portion 1B before and / or before and after the cutting of the precursor material material 1; It is also possible to bond the cut fiber ends constituting the sheath material.
[0043]
Moreover, without adopting such a method of supplying an adhesive to the cutting portion of the core material uncoated portion 1B before and / or before and after cutting of the precursor material 1, the cutting end illustrated in FIG. A fusion process may be performed. That is, the method of FIG. 3 is a method in which the cutting end portion of the sheath material S after cutting is fused with the molding jig 5 in order to improve the appearance quality of the liquid absorbent core. This is just an example .
[0044]
As described above, in the liquid absorbent core of the present invention, “the cut fiber end constituting the sheath material at the cut end of the liquid absorbent core is subjected to a fusion treatment and / or an adhesive treatment”, so The problem of unraveling the fiber can be solved.
[0045]
Furthermore, the liquid absorbent core of the present invention is similar to the conventional liquid absorbent core proposed in Japanese Patent Application Laid-Open No. 11-169449. “The surface layer is provided only on the side surface of the liquid absorbent core. There is no problem that it cannot be provided at the front end and the lower end. On the contrary, since the sheath material of the present invention is formed of the fiber material as described above, the liquid absorbing efficiency of the functional agent is high, and “not only the side surface of the liquid absorbing core but also the front end portion and the lower end of the liquid absorbing core. It is more preferable to provide it also in the part. "
[0046]
In addition, as for the liquid absorption efficiency of the functional agent by the sheath material S of the present invention, for example, as described above, the surface of the sheath material S is further coated with varnish or the sheath material is subjected to functional processing such as hydrophilic processing. Can be adjusted. Also, the liquid absorption efficiency of the functional agent can be adjusted by adjusting the thickness of the sheath material S or adjusting the basis weight.
[0047]
In addition, as illustrated in FIG. 2, the sheath material S is cut by the core material non-covering portion 1 </ b> B in a state where the sheath material S is narrower than the diameter of the core material C. In this state, the cut fiber ends are subjected to fusion treatment and / or adhesion treatment. For this reason, even if the core material C is not bonded to the sheath material S by an adhesive or the like, the core material C does not fall out of the sheath material S. Moreover, the shape of the liquid absorbent core is not maintained by the reinforcing effect of the sheath material S as in the prior art, but is maintained by the reinforcing effect of the core material C having high rigidity and strength. For this reason, the diameter of the liquid absorbent core of the present invention can be made smaller than the diameter of the conventional liquid absorbent core, and the liquid absorbent core itself can be designed compactly.
[0048]
From such a viewpoint, it is preferable that the end of the core material C has a stepped shape as described in claim 2 of the claims of the present invention. In this regard, with reference to FIG. 4 for explaining the end shape of the core material C and the end treatment state thereof, the end of the core material C is changed to the stepped shape illustrated in FIG. By making the taper shape illustrated in FIG. 4- (b), the cut end of the liquid absorbent core can be rounded. And thereby, the appearance quality of the liquid absorbent core can be improved, and the commercial value can be improved.
[0049]
That is, by cutting the end of the absorbent core that is covered with the sheath material S at the cutting position indicated by the alternate long and short dash line in FIG. And / or the terminal process part S1 which carried out the adhesion | attachment process can be formed, and the tearing of a fiber can be prevented. Further, by forming such a terminal treatment part S1, as shown in FIG. 4- (d), the appearance of the cut end surface of the cut end of the liquid absorbent core and the end of the cut fiber end of the sheath material S can be seen. Can be done beautifully. FIG. 5 is an explanatory diagram illustrating only the case where the end of the core material C has a stepped shape, but the same can be said of course when the end of the core material C has a tapered shape. is there.
[0050]
In the present invention, as described in claim 3 of the claims, it is preferable that the end of the liquid absorption core is cut by a laser. This will be described below with reference to FIGS. 5 and 6. FIG.
[0051]
FIG. 5 shows a laser-cut base for a cutting precursor material 10 (hereinafter referred to as “the material to be cut 10”) obtained by cutting the precursor material 1 into a certain length at the core non-covering portion 1B by the method illustrated in FIG. It is the perspective view which illustrated the state set to 11 predetermined positions. The number of the workpieces 10 set on the laser cutting base 11 may be any number as long as laser cutting is possible.
[0052]
FIG. 6 is a schematic side view for explaining an embodiment in which a known laser cutting machine is used to cut the end of the workpiece 10 according to the present invention. In this embodiment, the laser cutting base 11 on which the workpiece 10 of FIG. 4 is set is first set at a predetermined position on the work table 12. Thereafter, the machining head 13 and / or the work table 12 of a known laser cutting machine is moved, and cutting is performed at a predetermined cutting position (a position indicated by a one-dot chain line in FIG. 5).
[0053]
For example, as a method of terminal cutting processing of the material 10 to be cut, CO ₂ Cutting with a laser beam using a gas laser or YAG laser. In this laser cutting method, the laser beam focused at approximately one point by the optical system and the material to be cut 10 are moved relatively in order to accurately cut at a predetermined position. At the same time, the cutting process is performed by injecting oxygen gas or air from the assist gas nozzle to the cutting portion coaxially with the laser beam.
[0054]
At this time, the cutting method of the end of the material to be cut 10 is performed by moving the work table 12 on which the material to be cut is placed relative to the laser beam by computer control, for example, NC control. It is preferable to implement. As such a known general-purpose laser cutting machine, a laser beam output from a laser oscillation unit (not shown) is vertically lowered by a mirror (not shown) incorporated through a laser guide tube (not shown). The workpiece 10 is attached to a work table 12 that is movable downward in the XY direction (planar direction). Can be used. The output of the laser beam and the irradiation time (speed) depend on the material of the material to be cut 10, for example, the strength and weaving of the sheath material S, the degree of compounding, the material and diameter of the core material C, etc. It is preferable that it can be set.
[0055]
As described above, when the material to be cut 10 is laser-cut, the core material C having a stepped shape as the core material C is most excellent in appearance quality. Further, the cut end face shape after the end face treatment using the stepped core material C is rounded and the appearance quality is very good.
[0056]
【The invention's effect】
As described above, according to the liquid absorbent core of the functional agent of the present invention, the functional agent can be stably evaporated for a relatively long time, and it is easy to produce a product of stable quality. In addition, the bending strength and shape retention strength of the absorbent core during handling are sufficient, so that clogging does not occur during use, mass production is possible at a low cost, and a compact shape is adopted. It is possible to provide a liquid-absorbing wick that can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating various shapes of a core material according to the present invention.
FIG. 2 is an explanatory view illustrating a method for producing a rod-shaped liquid absorbent core according to the present invention.
FIG. 3 is an explanatory view illustrating a method for fusing a cut end of a sheath material according to the present invention.
FIG. 4 is an explanatory diagram for explaining the end shape of the core material according to the present invention and the end treatment state thereof;
FIG. 5 is a perspective view illustrating a state in which a material to be cut is set at a predetermined position on a laser cutting base.
FIG. 6 is a schematic side view for explaining an embodiment in which a known laser cutting machine is used for cutting the end of the material to be cut according to the present invention.
[Explanation of symbols]
C Core material
S sheath material
S1 Terminal portion of sheath material subjected to fusion treatment and / or adhesion treatment

Claims (2)

A rod-shaped liquid absorbent core comprising a core material and a sheath material, and for absorbing the functional agent and evaporating the functional agent around, wherein the sheath material is a blade, a woven fabric, a knitted fabric, and wherein the felt, or consists of a fiber material made of a nonwoven fabric, and that the terminal ends of cut fiber constituting the sheath material at the cut end of the liquid suction side of the wick is fused processing and / or bonding process Liquid absorbent core for functional agents.   The liquid absorbent core for a functional agent according to claim 1, wherein the end of the core material has a stepped shape and / or a tapered shape.

Images