JP2009138366A - Drain outlet member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain outlet member which can be restrained from causing a slip, even if the drain outlet member is used in a closed cover state, by having an antifouling effect in itself, which can maintain the effect for a long period of time when the drain outlet member is repeatedly cleaned, and which further enhances the antifouling effect, brought about by stainless steel, by a hydrophilic coating. <P>SOLUTION: This resin drain outlet member is provided in a kitchen sink; and the stainless steel cover is attached to the front side of the drain outlet member, and coated with the hydrophilic coating. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a drain port member that is not easily slipped or soiled, and particularly relates to a drain port member that is provided at a drain port of a kitchen sink and to which a strainer is attached.

  As shown in FIG. 4, the drain port 4 of the sink 1 is provided with a drain port member 5. The drain port member 5 is adjacent to a strainer 6 for separating discharged water from garbage and the like. Stored. When garbage or the like is collected to some extent in the strainer 6, the collected garbage or the like is taken out from the drain port member 5 together with the strainer 6 and discarded.

  If the strainer 6 is not cleaned frequently, the garbage collected in the strainer 6 is left in a state containing water for a long time, so that bacteria are likely to propagate. For this reason, the strainer 6 and the drainage port member 5 accommodated in a state where the strainer 6 is adjacent to the strainer 6 are liable to slip (slimming) and are not preferable in terms of hygiene and appearance.

Therefore, as a method for suppressing such slipping, for the strainer, the surface of the strainer is coated with a fluororesin (Patent Document 1), and for the drain port member, composite plating containing photocatalytic oxide fine particles is used. What is applied (Patent Document 2), and one using a member made of stainless steel, copper, or a copper alloy (Patent Document 3) is known.
Japanese Utility Model Publication No. 6-85008 JP 2000-144096 Gazette JP 2002-13175 A

  However, in Patent Document 1, even if the strainer itself hardly slips, the drain outlet member adjacent to the strainer tends to slip, and the effect tends to be insufficient. Further, since the water-repellent coating is a resin, there is a tendency that the effect is easily lost when it is rubbed strongly with scrubbing during cleaning. In addition, since the water repellent action is used, the dirt is difficult to adhere to. However, once the dirt is attached, the water that is washed away is not brought close to it, so that it is difficult to remove the dirt. In patent document 2, since it is photocatalytic, the effect is inadequate in the drain port member which does not receive light, if a cover is attached. In Patent Document 3, since the drain port member is made of stainless steel, it has a slip suppression effect, but there is a strong demand for further improvement of the slip prevention effect.

  The present invention has been made to solve such a problem, and the drain port member itself has a contamination prevention effect, so that even when the lid is used in a closed state, the slip to the drain port member is achieved. It is possible to suppress the generation of water, to maintain the effect for a long time even after repeated cleaning, and to provide a drain port member in which the antifouling effect of stainless steel is further improved by a hydrophilic film.

The present invention relates to the following.
(1) A drain port member provided in a kitchen sink, having a resin main body and a stainless steel cover attached to the surface of the main body, and the cover is coated with a hydrophilic film Drain port member.
(2) The drain port member formed by forming a layer of a polysilazane and a silane coupling agent-containing liquid on the cover and causing a silica conversion reaction in (1).
(3) In (1) or (2), the drainage port member integrated with the resin drainage port member by caulking the edge of the entrance of the drainage port member.
(4) forming a layer of polysilazane and a silane coupling agent-containing liquid on the cover, and forming a hydrophilic film by carrying out a silica conversion reaction; and a cover formed with the hydrophilic film is a resin drainage port member The method for manufacturing a drain port member according to any one of (1) to (3), wherein the cover is integrated with the drain port member by being caulked to the edge of the inlet.
(5) A step in which the cover is integrated with the drain port member by caulking the edge of the resin drain port member, and polysilazane and silane coupling on the cover and the drain port member The method for producing a drain port member according to any one of (1) to (3), further comprising a step of forming a layer of an agent-containing liquid and forming a hydrophilic film by causing a silica conversion reaction.

  According to the present invention, since the drain port member itself has a pollution-preventing effect, even if it is used in a state in which the lid is closed, the occurrence of slippage to the drain port member can be suppressed, and cleaning is repeated. Therefore, the drainage port member can be provided in which the antifouling effect of stainless steel is further improved by the hydrophilic film.

  The sink 1 in which the drain port member of the present invention is used is not particularly limited as long as it is used in a general kitchen. For this reason, for example, a resin or stainless steel plate as shown in FIG. 1 that has been press-molded and has a bottom surface 2, a peripheral wall 3, and a drain port 4 is used.

  As shown in FIG. 1, the drain port 4 is provided with a drain port lid 8 having an opening, and below that, a drainage structure including a strainer 6, a drain port member 5, a drain trap 7, and a drain pipe 9 is provided. . Waste water such as hot water used in the sink 1 and raw garbage generated by cooking flow into the strainer 6 from the opening of the drain port lid 8 attached to the drain port 4, where fixed items such as garbage are fixed. Remains in the strainer 6 and separated from the waste water. Thereafter, only the drainage flows down in the order of the drain port member 5, the drain trap 7, and the drain pipe 9 and is drained.

  The drain outlet lid 8 has an opening for allowing drainage, garbage, etc. to pass through while covering the drain outlet 4 of the sink 1, and the garbage remaining in the strainer 6 is exposed and looks bad. , To suppress the diffusion of odor.

  The strainer 6 separates solids such as garbage from wastewater, and is produced by processing a metal such as stainless steel or a resin so as to have a small opening such as a mesh. As will be described later, the strainer 6 accommodated in a state adjacent to the drain port member 5 is preferably made of resin from the viewpoint of not damaging the hydrophilic coating applied to the drain port member 5 in which the strainer 6 is accommodated. .

  As shown in FIG. 2, the drain port member 5 is a member for housing the strainer 6, receiving drainage separated from the solid matter such as garbage by the strainer 6, and flowing it to the downstream drain trap 7. is there. The drainage member 5 includes a main body 10 and a cover 11. The main body 10 is molded from a resin such as ABS resin (acrylonitrile / butadiene / styrene copolymer synthetic resin), PP (polypropylene), PE (polyethylene), PVC (polyvinyl chloride) in terms of moldability, light weight, and cost. Manufactured. The cover 11 is attached so as to cover the surface side of the drain port member 5 to which drainage is directly applied, and is made of stainless steel because it is difficult to rust, has excellent strength, and is difficult to be contaminated by an action that is difficult to be charged. Is used.

  As shown in FIG. 3, the cover 11 is integrated with the resin drainage port member 5 by caulking the caulking portion 14 at the edge 13 of the entrance of the main body 10 of the drainage port member 5. Thereby, it is possible to prevent the waste water flowing from the upstream sink 1 from entering between the main body 10 of the drain port member 5 and the cover 11. Note that the caulking means that the portion to be connected is deformed and tightly adhered, and as shown in FIG. 3, the caulking portion 14 is deformed so as to sandwich the edge 13 of the entrance of the main body 10 to thereby cover the cover 11. Is closely attached to the main body 10.

  As shown in FIG. 3, the cover 11 is coated with a hydrophilic film 12. Thereby, since the surface which receives the waste_water | drain of the drain port member 5 becomes hydrophilic, even if dirt adheres, and even if dirt adheres, it is easy to wash away. For this reason, even if garbage etc. remain on the strainer 6, the surface of the drainage port member 5 that is adjacent to the strainer 6 is kept clean, so that the growth of bacteria is suppressed. Thereby, even if it uses in the state where the lid | cover 8 was closed, since the drain port member 5 itself has a slip suppression effect, generation | occurrence | production of the slip to the drain port member 5 can be suppressed.

  The hydrophilic film 12 to be coated on the cover 11 is desirably a silica film coating using polysilazane from the viewpoints of adhesion to the surface of the cover 11, film strength, hydrophilicity, stain resistance, and the like. As a result, the hydrophilic coating 12 is well-familiar with water, so that the contaminant adhered to the hydrophilic coating 12 by the washing operation and the water that has penetrated between the hydrophilic coating 12 gradually raises the contaminant. It acts to peel off, exhibits excellent antifouling properties during washing operations, and facilitates washing with water. Further, a small amount of water is adsorbed on the surface of the hydrophilic film 12, and the electrostatic adhesion of contaminants is suppressed by the discharge effect. Therefore, even if cleaning is repeated, the effect can be kept long, and it becomes possible to provide a drain port member in which the antifouling effect of stainless steel is further improved by the hydrophilic film.

  As the polysilazane, a conventionally known polysilazane can be used. Preferably, the polysilazane has a repeating unit of the general formula shown in Chemical Formula 1 and has a number average molecular weight measured by gel permeation chromatography (GPC) using polystyrene as a standard. 100 to 50000 cyclic polysilazane, chain polysilazane, or a mixture thereof is used.

  Further, the above polysilazane or silazane polymer is used as a solvent with a tertiary amine such as a trialkylamine, a secondary amine having a sterically hindering group, or a basic compound such as phosphine. A high polymer having a number average molecular weight of 200 to 500,000 as measured by gel permeation chromatography (GPC) using polystyrene obtained by adding to solvent hydrocarbons to cause dehydrocondensation reaction as a standard is used. .

  Alternatively, it is a polymer obtained by a modification reaction of inorganic polysilazane, has a cross-linking bond —NH— or —NHNH—, and the atomic ratio (N / Si) of nitrogen and silicon bonded to silicon atoms is 0.8 or more. And those having a number average molecular weight of 200 to 50000 as measured by gel permeation chromatography (GPC) using polystyrene as a standard.

  Further, the composition formula (RSiHNH) X [(RSiH) 1.5N] Y (where R is an alkyl group, alkenyl group, cycloalkyl group, aryl group, or an atom directly connected to Si other than these groups is carbon) Represents a group, an alkylsilyl group, an alkylamino group, and an alkoxy group, Y is 1-X, and polyorganohydrosilazane represented by 0.4 <X <1> is used.

  Furthermore, polysiloxazan containing oxygen, polymetallosilazane reacted with metal alkoxide, and the like, and polyborosilazane reacted with an organic boron compound can also be used.

  These various polysilazanes exhibit liquid to solid at room temperature depending on the type. In addition, the polysilazane used in the present invention is preferably one having a high active hydrogen content ratio directly connected to silicon or nitrogen in terms of adhesion to the resin, and generally the total number of atoms of silicon atoms and nitrogen atoms It is advantageous to use those having 90 or more, preferably 100 to 150, active hydrogen atoms per 100.

  Curing agents such as organic amines, carboxylic acid anhydrides, isocyanates, thiols, carbodiimides, metal alkoxides, metal halides can be added to coating materials containing polysilazane. Platinum, palladium, aluminum, and amines can also be used. Moreover, you may add a metal powder, a ceramic powder, an antifoamer, surfactant, a ultraviolet absorber, a leveling agent, an antistatic agent, a dispersing agent, a pigment, a thixotropy imparting agent etc. as needed.

  Furthermore, in order to improve water resistance and hot water resistance, the above-mentioned polysilazane containing a silane coupling agent or a silane coupling agent can be applied as a primer on the surface of the coating surface in advance.

  A silane coupling agent is a compound generally represented by XSiR3. X is a functional group capable of reacting with an organic group and represents a vinyl group, a methacryloxy group, an epoxy group, an amino group, an isocyanate group, a mercapto group, a halogen or the like, and R is a hydrolyzable functional group such as a methoxy group or an ethoxy group. Represents an alkoxy group such as

  In the method of using a silane coupling agent alone as a primer, there has been conventionally known a silane coupling agent diluted to a concentration of 0.1 to 50% with an alcohol such as methanol, ethanol, propanol or butanol on the coating surface in advance. After applying by the applied application method, it is heated in the temperature range from room temperature to 200 ° C. for 1 to 30 minutes to form a cured film. Thereafter, the aforementioned polysilazane is applied.

  In the method using a mixture of a silane coupling agent and polysilazane as a primer, the silane coupling agent and polysilazane are mixed in advance in a ratio of 10/90 to 90/10 on the coated surface, and 0.1 to 50% of organic solvent is used. A solution diluted to a concentration is applied by a conventionally known coating method, and then heated in a temperature range from room temperature to 200 ° C. for 1 to 100 minutes to form a cured film. Thereafter, the inorganic material described above is applied. In particular, in this method, since the silica film of the primer layer blocks water and can suppress hydrolysis of the organic group of the silane coupling agent bonded to the coating surface, significant water resistance and hot water resistance are achieved. The

  As a diluting solvent for the above polysilazane or a mixture of silane coupling agent and polysilazane, aliphatic hydrocarbons, halogenated hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, and ethers may be used alone or in combination. However, those in which the coated surface swells or dissolves, or protic solvents such as water and alcohol are not preferable.

  Examples of the coating method on the coated surface include conventionally known coating methods such as spray coating, spin coating, dip coating, and flow coating.

  The silica conversion rate of the film formed on the coated surface in this way is expressed by the value of the index Y represented by the following formula (1) when the absorbance of SiO in the IR spectrum of the film is A and the absorbance of SiH is B. Can do. At this time, as the IR analysis method, an attenuated total reflection (ATR) method can be used in addition to a general KBr method.

  The value of Y as an index is preferably 3.0 or less, more preferably 1.0 to convert the film to silica. In order to further improve the hydrophilicity of the polysilazane film surface, it is necessary to immerse it in an alkaline solution or in hot water after forming a ceramicized film. At this time, the silica conversion rate of the film If it is too low, hydrophilicity cannot be maintained for a long time, and if it is too high, sufficient hydrophilicity cannot be obtained. For this reason, when performing the treatment for further improving the hydrophilicity, it is preferable to adjust the Y value as an index of the silica conversion rate of the polysilazane film to be 0.1 or more and 2.0 or less. .

  In addition to the stainless steel cover 11 of the drain port member 5, ABS resin, PP (polypropylene), PE (polyethylene), PVC (polyvinyl chloride) constituting the main body 10 of the drain port member 5 can be used as a target for forming the polysilazane film. Such resins are also targeted. For this reason, the polysilazane film forming conditions are maintained for a certain period of time from room temperature to a temperature at which the coated surface is not affected, usually 10 to 200 ° C., or at a humidity of 50 to 100% for a certain period of time. At this time, the temperature under high humidity may be any temperature as long as it is 10 ° C or higher.

  The drain port member 5 of the present invention can be manufactured by the following method. As a first method, a layer of polysilazane and a silane coupling agent-containing liquid is formed on the cover 11 and the step of forming the hydrophilic film 12 by performing a silica conversion reaction is performed first, and then the hydrophilic film 12 is formed. There is a method of performing a step of integrating the cover 11 with the drain port member 5 by caulking the formed cover 11 to the edge 13 of the entrance of the resin drain port member 5. In this case, the polysilazane film forming conditions are such that the base is only the cover 11 made of stainless steel, and therefore, processing at a relatively high temperature in a short time is possible. For example, it is desirable to dry (crosslink) for 60 minutes in a 140 ° C. drying oven. Thereby, it is possible to obtain a silica conversion rate sufficient to withstand immersion in an alkaline solution or hot water in a short time. After that, it is desirable to treat with 0.02% sodium hydroxide aqueous solution. Thereby, the hydrophilicity of the polysilazane film surface can be further improved.

  As a second method, the cover 11 is first integrated with the drain port member 5 by the caulking portion 14 being caulked to the edge 13 of the entrance of the resin drain port member 5. Then, the method of forming the layer of the polysilazane and the silane coupling agent containing liquid on the cover 11 and the drain port member 5, and performing the process of forming the hydrophilic membrane | film | coat 12 by making a silica conversion reaction is mentioned. In this case, the polysilazane film is formed under the condition that the coated surface (underlying resin material) is not affected (for example, left at room temperature (30 ° C.) and humidity of 50 to 100% under high humidity for 4 days). Is desirable. Thereby, the silica conversion rate sufficient to withstand immersion in an alkaline solution or hot water can be obtained without affecting the coated surface (underlying resin material). After that, it is desirable to treat with 0.02% sodium hydroxide aqueous solution. Thereby, the hydrophilicity of the polysilazane film surface can be further improved.

Example 1
As shown in FIGS. 1 and 2, the drain port 4 provided in the sink 1 is provided with a drain port lid 8 having an opening, below which a strainer 6, a drain port member 5, a drain trap 7, A drainage structure including a pipe 9 is provided. Waste water such as hot water used in the sink 1 and raw garbage generated by cooking flow into the strainer 6 from the opening of the drain cover 8 attached to the drain port 4, where fixed items such as garbage are fixed. Remains in the strainer 6 and separated from the waste water. Thereafter, only the drainage flows down in the order of the drain port member 5, the drain trap 7, and the drain pipe 9 and is drained.

  The drain outlet lid 8 is made of stainless steel, and is provided with an opening for allowing drainage or garbage to pass through. The strainer 6 is manufactured by molding a resin so as to have a small opening such as a mesh.

  As shown in FIG. 3, the drain port member 5 includes a main body 10 and a cover 11, the main body 10 is manufactured by molding ABS resin, and the cover 11 is formed of a stainless steel plate in a shape covering the surface side of the main body 10. To manufacture. The cover 11 is integrated with the resin drainage port member 5 by the caulking portion 14 being folded and crimped to the edge 13 of the entrance of the drainage port member 5.

  Manufacture of the drain port member 5 of a present Example is performed by the following processes. First, a step of forming a layer of polysilazane and a silane coupling agent-containing liquid on the cover 11 and forming a hydrophilic film 12 by carrying out a silica conversion reaction, and then the cover 11 formed with the hydrophilic film 12 is made of resin. The cover 11 is manufactured by a process in which the cover 11 is integrated with the drain port member 5 by folding and crimping the caulking portion 14 to the edge 13 of the entrance of the drain port member 5.

  As shown in FIG. 3, the cover 11 is coated with a hydrophilic film 12. The hydrophilic film 12 is a silica film coated with polysilazane from the viewpoints of adhesion to the surface of the cover 11, film strength, hydrophilicity, stain resistance, and the like.

  The hydrophilic film 12 was formed on the cover 11 as follows. That is, a mixed liquid (xylene solvent) of 5% polysilazane NL-110 (xylene solvent) (manufactured by Clariant Japan Co., Ltd.) and 2% silane coupling agent A-1100 was used as a coating material. This was applied to the cover 11 that had been degreased in advance by spray coating, and dried (crosslinked) for 60 minutes in a drying oven at 140 ° C. Thereafter, it was treated with a 0.02% aqueous sodium hydroxide solution.

(Example 2)
A drain port member 5 was produced in the same manner as in Example 1 except that the manufacturing method of the drain port member 5 and the method of forming the hydrophilic film 12 were changed.

  That is, the manufacture of the drain port member 5 of the present embodiment is performed by the following steps. First, the cover 11 is folded and caulked to the edge 13 of the entrance of the resin drainage port member 5 so that the cover 11 is integrated with the drainage port member 5. A layer of polysilazane and a silane coupling agent-containing liquid is formed on the mouth member 5, and the step of forming the hydrophilic film 12 by the silica conversion reaction is produced.

  Moreover, formation of the hydrophilic membrane | film | coat 12 with respect to the cover 11 and the main body 10 was performed as follows. That is, a mixed liquid (xylene solvent) of 5% polysilazane NL-110 (xylene solvent) (manufactured by Clariant Japan Co., Ltd.) and 2% silane coupling agent A-1100 was used as a coating material. This was applied to the cover 11 that had been previously degreased by spray coating, and left for 4 days in an environment of 30 ° C. and 50% RH (relative humidity). Thereafter, it was treated with a 0.02% aqueous sodium hydroxide solution.

It is sectional drawing which shows the state which attached the drain outlet member of this invention to the sink. It is sectional drawing of the drainage structure which has the drain outlet member of this invention. It is sectional drawing of the principal part of the drain port member of Example 1 of this invention. It is sectional drawing of the drainage structure which has the drain outlet member of a prior art example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sink, 2 ... Bottom surface, 3 ... Perimeter wall, 4 ... Drain port, 5 ... Drain port member, 6 ... Strainer, 7 ... Drain trap, 8 ... Cover, 9 ... Drain piping, 10 ... Main body, 11 ... Cover, 12 ... hydrophilic film, 13 ... edge of entrance, 14 ... caulking part

Claims (5)

A drain outlet member provided in the sink of the kitchen,
It has a resin main body and a stainless steel cover attached to the surface side of the main body.
A drain port member in which the cover is coated with a hydrophilic film. In claim 1,
A drain port member formed by forming a layer of a liquid containing polysilazane and a silane coupling agent on a cover and causing a silica conversion reaction. In claim 1 or 2,
A drain port member that is integrated with a resin drain port member by caulking the cover to the edge of the entrance of the drain port member. Forming a layer of polysilazane and silane coupling agent-containing liquid on the cover, and forming a hydrophilic film by silica conversion reaction; and
A step in which the cover is integrated with the drain port member by caulking the cover formed with a hydrophilic film to the edge of the entrance of the resin drain port member.
The manufacturing method of the drain port member in any one of Claims 1-3. A step in which the cover is integrated with the drain port member by caulking the edge of the entrance of the resin drain port member; and
Forming a layer of a liquid containing polysilazane and a silane coupling agent on the cover and the drain port member, and forming a hydrophilic film by carrying out a silica conversion reaction,
The manufacturing method of the drain port member in any one of Claims 1-3.

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