JPH1076122A - Manufacture of antimicrobial filter for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To economically and easily manufacture an excellent antimicrobial fitter for air conditioner by stretching a fused material of an antimicrobial agent-containing crystalline polyolefin resin, winding on a bobbin and after annealing, making a net and forming the filter to attain sufficient annealing with a small equipment reduced in heat loss. SOLUTION: The antimvcrobial agent, a pigment and the like are dry-blended by a tumbler or uniformly dispersed by fusing and kneading using a kneader with a crystalline polypropylene. After that, the stretched yarn obtained by fusing, forming and stretching is wound on the bobbin. Next, the stretched yarn is annealed under a prescribed annealing condition by changing the bobbin as it is, on which the stretched yarn is wound, in a small scale heating oven or the like. The stretched yarn is shrunk by a prescribed size by annealing. Then, the annealed stretched yarn is made into the net by weaving or the like and the net is set in a frame to form the antimicrobial filter for air conditioner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a method for producing an antibacterial filter for an air conditioner.

[0002]

2. Description of the Related Art FIG. 1 is an explanatory view showing the inside of an air conditioner, in which an evaporator 2, a cross flow fan 3 and the like are incorporated. Refrigerant supplied through a refrigerant pipe via a hermetic compressor, condenser, decompression device, etc. of an outdoor unit (not shown) evaporates in the evaporator 2 to generate cold heat, and again passes through the refrigerant pipe (not shown). Returned to the hermetic compressor to form a refrigeration cycle. When the cross flow fan 3 is driven, the indoor air is sucked into the air conditioner 1 from the front grill 4 of the air conditioner 1, and the air cooled by the evaporator 2 is blown into the room from the outlet 5. It has become.

FIG. 2 is an exploded perspective view showing a part of the air conditioner 1 of FIG. Front grille 4 and air conditioner body 1
Between A, filters 6, 6 are interposed. Reference numeral 7 denotes a net for removing dust and the like, and reference numeral 8 denotes a frame on which the net is set. The air in the room sucked into the air conditioner 1 through the front grill 4 is filtered to remove dust and the like contained in the air when passing through the filters 6, 6, and the air conditioner main body 1A
It is designed to be inhaled.

FIG. 4 is a process chart for explaining a method of manufacturing a conventional antibacterial filter for an air conditioner. An antibacterial agent, a pigment, a stabilizer, a lubricant, and the like are dry-blended with a normal tumbler or the like in crystalline polypropylene (crystalline PP), uniformly dispersed, and then melt-extrusion-molded and stretched by a known method. The drawn yarn is wound on a bobbin. A wide and long net is formed by weaving using the drawn yarn wound on the bobbin, and then, in order to prevent secondary shrinkage of the net, the net is cut into a large hot stove having a length of several tens of meters. After shrinking by a fixed amount by introducing into the inside (shrinkage is appropriately set according to the material, about 3% to 10%
The conventional filter 6 has been manufactured by cutting the annealed net 7 and setting it in a frame 8.
Conventionally, since such a large facility is required to anneal the net, there is a disadvantage that a large space is required and heat loss is large. Unless a large facility is used, uniform shrinkage cannot be obtained, and the net shrinks unevenly during use and the filter is deformed, so that there is a problem that dust and the like are not sufficiently removed.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to achieve uniform and sufficient annealing even if annealing is performed using equipment having a small heat loss, and the net shrinks unevenly during use. An object of the present invention is to provide a method for economically and easily manufacturing an antibacterial filter for an air conditioner, which has no problem such as insufficient removal of dust and the like due to deformation of the filter.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies on such a problem, and as a result, have found that if the drawn yarn is annealed in a state where the drawn yarn is wound on a bobbin, equipment with a small heat loss can be used. It has been found that even if this annealing is performed, uniform and sufficient annealing can be achieved, and that the above problem can be solved by weaving the annealed drawn yarn to make a net and manufacturing a filter using this net. The invention has been reached.

According to the first aspect of the present invention, a drawn yarn obtained by drawing a melt extruded product of a crystalline polyolefin resin composition containing an antibacterial agent is wound around a bobbin, and the bobbin is drawn under an annealing condition. A method for producing an antibacterial filter for an air conditioner, comprising: after annealing a yarn, producing a filter using a net formed using the annealed drawn yarn.

According to a second aspect of the present invention, in the method for producing an antibacterial filter for an air conditioner according to the first aspect, the crystalline polyolefin is crystalline polypropylene.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 3 is a process diagram illustrating a method for producing the antibacterial filter for an air conditioner of the present invention. Antibacterial agents, pigments, stabilizers, lubricants, etc. are dry-blended with crystalline polypropylene (crystalline PP) using an ordinary tumbler, or a Banbury mixer, pressure kneader, kneading extruder, twin-screw extruder, roll, etc. And then uniformly dispersed by melt kneading with a conventional kneading machine, and then melt-extrusion-molded and stretched by a known method, and the drawn yarn is wound around a bobbin.
Next, the bobbin on which the drawn yarn has been wound is directly put into a small heating furnace or the like, and the drawn yarn is drawn under a predetermined annealing condition (a condition in which the bobbin is not broken according to the material, the length of the drawn yarn, and the shape of the bobbin). Anneal the yarn. By this annealing, the drawn yarn shrinks by a predetermined amount (set to about 3% to 10%). Next, a net is formed by weaving in a known manner using the annealed drawn yarn, and the net is cut by a known method and set in a frame to obtain an antibacterial filter for an air conditioner of the present invention. To manufacture.

The crystalline polyolefin used in the present invention is an α-olefin such as ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene and 1-decene.
From the group consisting of olefin homopolymers or mutual copolymers thereof, copolymers of ethylene with unsaturated carboxylic acids or their esters or metal salts, and ethylene-vinyl ester copolymers such as ethylene-vinyl acetate copolymers At least one selected. Among them, crystalline polypropylene is preferably used because various properties such as mechanical strength can be improved.

The crystalline polypropylene used in the present invention includes a crystalline propylene produced using a catalyst system obtained from a solid catalyst component containing a transition metal such as titanium and an organoaluminum compound or these electron-donating organic compounds. Any of a homopolymer, a crystalline propylene / ethylene block copolymer, or a mixture thereof can be used. The crystalline propylene
The ethylene block copolymer has two main components, a propylene homopolymer component and a propylene / ethylene copolymer component. In addition, an ethylene copolymer or the like may be blended with the crystalline polypropylene.

The molecular weight distribution (Mw / Mn), melt flow rate (MFR) and the like of the crystalline polypropylene are not particularly limited. However, crystalline polypropylene having a molecular weight distribution (Mw / Mn) of about 5.5 to 12 and a melt flow rate (MFR) of about 0.3 to 12.0 g / 10 min. Is excellent in moldability and stretchability and mechanical strength. Can be preferably used because of its large size. The value of the molecular weight distribution (Mw / Mn) was determined by gel permeation chromatography (GP
C). Molecular weight distribution (Mw
/ Mn) is a parameter indicating the breadth of the molecular weight distribution, and is a value obtained by dividing the weight average molecular weight (Mw) by the number average molecular weight (Mn). When the molecular weight distribution (Mw / Mn) is less than 5.5, the moldability is deteriorated. On the other hand, if it exceeds 12, the stretchability is inferior and the mechanical strength may be reduced. MFR is 0.3 g / 10 min. If it is less than 12.0 g / 10 min. If the ratio exceeds, the stretchability is good, but the mechanical strength is low and molding as a drawn yarn becomes difficult.

The antibacterial agent used in the present invention includes:
It is needless to say that it has an appropriate bactericidal effect, but in order to be used in a general living environment, it is required that there is no toxicity to the human body and no adverse effect on the environment. As an antibacterial agent satisfying such conditions, an organic antibacterial agent, an inorganic antibacterial agent, or a mixture thereof can be used. Examples of the organic antibacterial agent include phenols such as parachloromethaxylenol and 2-5-dichloro-4-bromophenol, N- (florodichloromethylthio) -phthalimide and N, N-dimethyl-N′-phenyl-.
Haloalkyls such as N '-(florodichloromethylthio) -sulfamide, 1- (4-chlorophenyl) -3
Iodos such as -iodopropargyl formal and 1-[(diiodomethyl) sulfonyl] -4-methylbenzene, 2- (4-thiazolyl) -benzimidazole and methyl benzimidazolylcarbamic acid and 2-methoxycarbonylaminobenzimidazole Benzimidazoles, 2-thiocyano-methylthio-benzothiazole and 1,2-bis (3-
Benzothiazoles such as methoxycarbonyl-2-thioureido) benzene, thiocarbamates such as tetramethylthiuram disulfide and zinc ethylenebis (dithiocarbamate), bis (2-pyridylthio-1)
-Oxide) zinc and 2,3,5,6-tetrachloro-4- (methylsulphenyl) pyridine and 2,4-
Dichloro-6- (ortho-chloroanilino) -1,3,3
Heterocyclic nitrogen compounds such as 5-triazine, quinones such as 8-oxyquinoline copper and 2-3-dichloro-1,4-naphthoquinone, 1,2-benzisothiazoline-
Isothiazolines such as 3-one and 2-n-octyl-4-isothiazolin-3-one, benzalkonium chloride and 1,1'-hexamethylenebis [5- (4-
Chlorophenyl) biguanide] quaternary ammonium salts such as dihydrochloride; cyanates such as 2,4,5,6-tetrachloroisophthalonitrile; anilides such as salicylanid;
Organic arsenic compounds including -oxybisphenoxaarsine, 1- (3-chloroallyl) -3,5,7-triaza-1-azoniaadamantanchloride, α-bromocinnamaldehyde, 2,4,4-trichloro Examples thereof include those mainly containing trichlorocarbanide, polyhexamethylenebiguanide hydrochloride, octadecyldimethyl-3-trimethoxysilylpropylammonium, etc., such as -2'-hydroxydiphenyl ether.

The inorganic antibacterial agents used in the present invention include, for example, inorganic antibacterial agents mainly composed of inorganic compounds such as silver, copper, zinc and tin, and those antibacterial agents which include calcium carbonate, zeolite and kaolin clay. , Diatomaceous earth, talc,
Examples include inorganic antibacterial agents supported on bentonite, ceramics, activated carbon, apatite, and the like. Inorganic antibacterial agents supported on ceramics, activated carbon, apatite and the like are preferably used because they have high antibacterial properties, are non-volatile, and are easily kneaded with resins. The mixing ratio of the antibacterial agent is not particularly limited.

The resin composition used in the present invention containing a crystalline polyolefin and an antibacterial agent may further include an inorganic filler, a fungicide, an insecticide, a deodorant, and the like, if necessary, without departing from the gist of the present invention. Any known additives such as flavoring agents, antistatic agents, antioxidants, ultraviolet absorbers, lubricants, nucleating agents, antiblocking agents, antifogging agents, flame retardants, pigments, dispersants, etc., may be optionally added and blended. Can be.

[0016]

According to the production method of the present invention, uniform and sufficient annealing can be achieved even when annealing is performed using equipment having a small heat loss, and the net shrinks unevenly during use and the filter is deformed. Therefore, an antibacterial filter for an air conditioner that does not have a problem such as insufficient removal of dust and the like can be economically easily manufactured.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a part of the air conditioner shown in FIG.

FIG. 3 is a process diagram illustrating a method for manufacturing a filter of the present invention.

FIG. 4 is a process diagram illustrating a conventional method for manufacturing a filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air conditioner 1A Air conditioner main body 2 Evaporator 3 Cross flow fan 4 Front panel 5 Outlet 6 Filter 7 Net 8 Frame

Claims (2)

[Claims] 1. A drawn yarn obtained by drawing a melt extruded product of a crystalline polyolefin resin composition containing an antimicrobial agent is wound around a bobbin, and the bobbin is annealed under annealing conditions, after annealing the drawn yarn. A method for producing an antibacterial filter for an air conditioner, comprising producing a filter using a net formed using a drawn yarn. 2. The method for producing an antibacterial filter for an air conditioner according to claim 1, wherein the crystalline polyolefin is crystalline polypropylene.