JP2000070141A - Easily washable beverage manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain excellent film characteristics of the initial stage even after a usage for a long period of time, facilitate the washing after the manufacture of a beverage, and reduce time and costs regarding the washing by forming a composite plating film dispersedly containing a fluorine compound, on the surfaces of parts of a beverage manufacturing device with which the beverage comes into contact, or sticks to. SOLUTION: For a beverage manufacturing device, e.g. an extracting device or the like, an extracted liquid is easy to stick to an stirrer in order to extract coffee or the like, especially, to the shaft part of blades. In this case, a composite plating film disperse-containing a fluorine compound is formed on the surfaces of parts to which a beverage is easy to stick. Then, the particle diameter of the fluorine compound particle is normally set at an average of approx. 2 μm, and one with an average of 1 μm or lower is preferable. Also, the volume percentage of the fluorine compound particle in the composite plating film is normally set at approx. 25-50%. In addition, when a fluorinated pitch, PTFE, and FEP or the like are used as the fluorine compound, the composite plating film is preferably heat-treated at 150-380 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage manufacturing apparatus provided with a composite plating film in which fine particles of a fluorine material are codeposited. In detail, a film that is excellent in water repellency or non-adhesiveness, adhesion, impact resistance, chemical resistance, abrasion resistance, scoring resistance, etc., and can maintain the initial excellent properties even after long use. Is provided on the surface of the portion of the beverage manufacturing device where the beverage is in contact with or to which the beverage adheres, thereby reducing the adhesion of dirt to the beverage manufacturing device and facilitating the removal of dirt. The primary objective is to reduce the time, effort and cost associated with cleaning by facilitating cleaning of the device.

[0002]

2. Description of the Related Art Conventionally, various proposals have been made for imparting non-adhesiveness to the surface of cooking utensils to reduce dirt during cooking or to facilitate removal of dirt.

[0003] Japanese Patent Application Laid-Open No. 7-23862 discloses a "member for cooking utensil and cooking utensil", "average particle size 2".
Cooker provided with a composite plating film containing dispersed fluorine compound particles having a particle size of μm or less, compared to the cooker disclosed in other patents, is water-repellent to non-adhesive, adhesive, impact-resistant, It has been reported that it has excellent chemical properties, abrasion resistance, scoring resistance, etc., and can maintain excellent initial properties even after long-term use.

[0004] However, such a technique is actively applied to a beverage manufacturing apparatus of a beverage manufacturing factory which continuously manufactures or mass-produces, thereby suppressing the adhesion of dirt or promoting the detachment of the adhered dirt. No effort has been made to reduce cleaning costs and, consequently, manufacturing costs.

[0005]

Accordingly, the present invention is excellent in water repellency or non-adhesiveness, adhesion, impact resistance, chemical resistance, abrasion resistance, scoring resistance and the like even after long-term use. A main object of the present invention is to apply a film capable of maintaining excellent initial properties to a beverage manufacturing apparatus, thereby facilitating cleaning after manufacturing the beverage, and reducing time and cost involved in cleaning.

[0006] Dirt adhering or sticking to the beverage production equipment during production may be mixed into the product or transferred to the product as a foul odor, and cleaning of the dirt requires a great deal of labor, time and cost. I do. In particular, if the frequency of cleaning is high, if the cleaning time is long, shorten the production time,
The continuous production time is reduced, and the production efficiency is reduced.
In addition, the labor, time, and cost required for cleaning are also an excessive burden, and when a large amount of water required for cleaning is required, especially when manual brushing cleaning is required,
It was difficult to secure the personnel. For this reason, equipment such as changing the shape of the piping and making the shape of the welding portion flatter has been made so that dirt does not easily adhere to the manufacturing equipment, or piping that can easily clean dirt. The equipment has been improved, such as changing the thickness of the equipment, and the parts of the equipment have been easily removed and disassembled so that cleaning can be performed more easily and in a shorter time. Improvements have been made to the structure. Furthermore, if the dirt adheres firmly, the dirt cannot be removed by washing with water, and the brushing is performed by hand using a metal scrubber or the like. Therefore, there is a problem related to abrasion of the part to be cleaned.

[0007] Unlike a cooking utensil member used in the home, the beverage manufacturing apparatus is operated at a high speed and continuously operated for a long time. Unlike a home cooking, a high pressure and a high temperature are used. Manufacturing is performed under more severe conditions. Therefore, wear of the device is very fast, and physical strength is also required. The dirt adhering to the beverage device is fixed very firmly, and the beverage production device is required to have strong chemical resistance, abrasion resistance, impact deformation resistance and the like for cleaning. Furthermore, the accuracy of the production of the device itself is very high, the device is composed of a very large number of parts, and the technology applied to the device must not impede the design and assembly of the device.

[0008] Most of the dirt in the beverage production apparatus is caused by adhesion of the beverage component itself being manufactured or burning of the beverage adhesion component by heating. Therefore, it is preferable that the structure is such that dirt hardly adheres to a portion of the beverage manufacturing apparatus where the beverage is in contact, or that even if dirt adheres, it can be easily removed. For this reason, stainless steel is frequently used in a portion where the beverage contacts or a portion where the beverage adheres in the beverage manufacturing apparatus. This is because stainless steel has advantages such as rust resistance, ease of drying due to water repellency, alkali resistance to a detergent used for washing, and the surface is hardly damaged. Further, in order to add abrasion resistance and chemical resistance (corrosion resistance) to stainless steel, for example, chrome plating may be applied. Chrome plating is more abrasion-resistant than stainless steel, but burns and other stains. Adhered well, and the adhered dirt was not easily removed.

[0009] In addition, the types of beverages to be produced are various, the viscosity and the acidity of the beverage, the temperature at which the beverage is handled are also various, and the characteristics required for the configuration of the portion in contact with or adhering to the beverage are many. Nothing could satisfy them all.

[0010]

Means for Solving the Problems In view of the problems of the prior art, the inventor of the present invention has conducted intensive studies and as a result, has found that the surface of the portion of the beverage manufacturing apparatus where the beverage comes into contact with or adheres to, or the portion where dirt is likely to adhere. It has been found that the object can be achieved by forming a composite plating containing a fluorine compound in a dispersed manner on the surface, for example, on the surface of a filling device or a sealing device which is particularly contaminated after production.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Beverage production equipment includes, for example, an extraction device, a centrifugal separator, a beverage heating and cooling device, a filtration device, a tank, a pipe, a valve, a homogenizer, a container conveying device, a container washing device, a filling device, and a stopper. Devices, labeling devices, product warming devices, box packing devices, and the like. Among these devices, specifically, the following parts,
Burning and adhesion of dirt are remarkable, and it is most preferable to apply the present invention to such a portion.

[0012] In the present specification, a beverage refers to a beverage in the course of production, from raw materials and intermediate products to final products.

In the extraction device, for example, a stirrer at the time of extracting coffee or tea, in particular, a shaft of a wing, and the extract is easily fixed and burnt to this portion. In addition, the extract is easily splashed on the upper part of the spray pipe for spraying the high-temperature extracted water, and the extract adhered by the splash is easily dried and burnt. Both the extraction liquid and the extraction water are at a high temperature, and the dirt is in an environment where they are easily fixed.

In the centrifugal separator, the whole hood, the ball disc, the frame hood, the frame upper, and the drain pipe are significantly contaminated, and particularly, the whole hood is often hot, and the adhered dirt is fixed by heat and burnt. Cheap.

In the beverage heating and cooling device, the inside of the heating plate heater is particularly contaminated. Since the beverage and the plate heater are in a high temperature state, the components in the beverage adhere to and accumulate on the plate surface for reasons such as heat denaturation of the components in the beverage, and are scorched and adhered. For example, in the case of coffee beverage production, a stain obtained by mixing a coffee extract and milk-derived milk protein adheres, and this stain is usually not cleaned sufficiently even with an alkaline detergent. is there.

In the filtration device, dirt is hardly fixed to a portion which is always in contact with the liquid to be extracted, but a portion where the extracted liquid is scattered, such as around the filter, is easily stained. In particular, the extracted liquid splashes on the edge of the filter for tea extraction, adheres and dries, and easily sticks as it is.

In the tank, the contamination varies depending on the contents to be put in the tank and the type of manufacturing process in the tank, or the storage time in the tank. In the tank, especially near the liquid surface is a portion where dirt is likely to adhere.
For example, in a beer fermentation tank or a storage tank, fermentation residue adheres near the interface, and this cleaning is very difficult.
In addition, when a fat-soluble substance such as a fat-soluble fragrance is contained in the contents, if the fat adheres to the wall surface in the tank, it is very difficult to remove the substance even by washing with an alkali detergent.

In the case of pipes and valves, since the beverage is in contact with the inner surfaces thereof, when the temperature of the beverage is high, when the viscosity of the beverage is high, or when the circulation inside the beverage is interrupted, etc., the structure is particularly complicated. It is easy for the beverage to stick firmly.

Homogenizers are used to emulsify milk components into beverages. In particular, the inside of the homogenizer homogenizer disk or the pressurized sleeve, or the seal portion near the inlet and outlet of the raw material etc. of the homogenizer is significantly contaminated.

In the container transporting apparatus, for example, a lubricant is constantly applied to the conveyor to prevent wear. However, in a toy which receives the lubricant flowing down from the conveyor, the lubricant is dried and fixed or the lubricant is discharged. If left untreated for a long time, it may rot and stick. Since toys are difficult to wash, it is very difficult to clean when dirt sticks.

In the container cleaning apparatus, the container is inverted, and hot water is sprayed onto the container for cleaning. Therefore, the cleaning water or the water after the cleaning is scattered around. For this reason, the washing water splashes around the nozzle for spraying the washing water and the vicinity thereof, or the washing water enters the inside of the apparatus, and the washing water dries, and the inorganic substance in the washing water adheres.

In the filling device, the beverage to be filled is often hot, and the beverage is scattered at the time of filling the beverage at the filler nozzle and its vicinity, particularly above the liquid contact surface of the filler nozzle, the exhaust pipe, and the liquid surface of the filler ball. It is dried and fixed as it is, and then burnt, so that it is very dirty.

In order to blow off the headspace air with nitrogen when tightening a sealing device such as a seamer, the entire inner surface of the can seamer, specifically, a candy turret, discharge turret, half mold turret, seaming roll, can stop Beverage splashes on rings and the like, which dries and burns, and stains are remarkable. This part is a part where cleaning is very difficult.

In the labeling apparatus, the adhesive for attaching the label is scattered in the vicinity of the apparatus to attach dirt. However, the adhesive itself has a strong adhesive force, so that cleaning is difficult.

In a product warming apparatus, for example, in a filling process of a beer factory, a can warmer for showering hot water on a can on a conveyor, which is used for keeping a cold product at normal temperature, in the vicinity of a shower nozzle, Microorganisms are very easy to grow on the inner surface of the housing and must be cleaned. However, since the operation is performed for 24 hours, it is difficult to clean.

In the box packing device, the box is assembled and attached with an adhesive, but the adhesive scatters near the device and is fixed. Usually, in a box packing device, a box is assembled and attached with an adhesive, but the adhesive scatters near the device and is fixed. Usually, since the adhesive uses a hot melt, the adhesive which has scattered and adheres to the device and then has a lowered temperature has a strong fixing force and is difficult to clean.

The fluorine compounds (pitch fluoride, graphite fluoride; PTFE, PFA, FEP, etc. and other general-purpose fluorine resins) used in the present invention are all known substances, and their raw materials and production methods are particularly Not limited.

For example, pitch fluoride is disclosed in JP-A-62-2.
No. 75190, which is obtained by fluorinating a pitch using fluorine gas.

For forming the eutectoid composite plating in the present invention, a known electroless plating method and electrolytic plating method capable of depositing a matrix metal on the surface of a metal material constituting a beverage production apparatus can be employed. As for the plating solution to be used, any of various plating solutions having a known composition can be used. More specifically, for example,
In accordance with the plating method disclosed in JP-A-9-27443 and JP-A-4-329897, fluorine compound fine particles such as pitch fluoride fine particles are dispersed in an aqueous solution of a plating metal salt to form a matrix on a substrate plate. Fine particles of a fluorine compound such as fine pitch fluoride particles may be co-deposited with the metal to form a composite plating film having both the inherent properties of the non-metallic fluorocarbon compound and the properties of the metal as the matrix.

In the present invention, a fluorine compound may be used alone, or two or more fluorine compounds may be used in combination.

Examples of the plating solution for the metal salt that forms the matrix in the composite plating film include plating solutions containing nickel, copper, zinc, tin, iron, lead, cadmium, chromium, precious metals, and alloys thereof. Can be used. These plating solutions are known in various compositions, and in the present invention, any of these known plating solutions can be used.

In the present invention, the particle size of the fine particles of the fluorine compound added to the plating solution for forming the composite plating film (hereinafter referred to as the composite plating solution) is not particularly limited. When the thickness is larger than the thickness, the particles fall off the plating surface due to friction. Therefore, it is desirable to use fine particles smaller than the thickness of the plating film. The thickness of the composite plating film according to the present invention varies depending on the material and shape of the members of the beverage production apparatus, the type of matrix metal, and the like, but is usually about 1 to 50 μm. Therefore, the particle size of the fluorine compound fine particles may be determined in consideration of the thickness of the composite plating film, but is usually about 2 μm on average, and more preferably 1 μm or less on average. Further, in order to ensure uniformity of dispersion of the fine particles of the fluorine compound in the composite plating solution and the composite plating film, 30 μm
It is desirable not to include coarse particles of m or more. The addition amount of the pitch fluoride fine particles in the composite plating solution is not particularly limited, but is usually about 200 g / l or less, preferably 1 to 1 g / l.
It is about 00 g / l.

In general, in a composite plating film composed of a metal and an eutectoid, the adhesion between the plating layer and the substrate decreases as the volume fraction of the eutectoid increases. Also in the present invention, the volume fraction of eutectoids (fluorine compound fine particles) in the composite plating film is limited to 60% in consideration of the adhesion between the plating film and the member of the beverage manufacturing apparatus as the substrate material. . On the other hand, if the volume fraction of the fluorinated pitch fine particles is too low, the water repellency is not sufficiently improved. Therefore, in the present invention, the volume fraction of the fluorine compound fine particles in the composite plating film is usually about 25 to 50%, more preferably about 35 to 45%.

In the composite plating solution for forming the composite plating film according to the present invention, it is necessary to uniformly disperse a fluorine compound having extremely high water repellency in the plating solution and to make it completely wet. Use activator. As the surfactant, for example, a water-soluble cationic or nonionic surfactant or an amphoteric surfactant that exhibits cationicity at the pH value of the plating solution can be used. In this case, as the cationic surfactant, a quaternary ammonium salt,
And 3 amines. Examples of the nonionic surfactant include polyethyleneimine-based and ester-based surfactants. Examples of the amphoteric surfactant include carboxylic acid-based surfactants,
Sulfone type and the like can be mentioned. In particular, C in the molecule
It is preferable to use a fluorine-based surfactant having a -F bond.

The amount of the surfactant to be added to the plating solution is usually about 1 to 100 mg, more preferably about 1 to 50 mg, per 1 g of the fluorine compound.

In the present invention, when forming a composite plating film, it is preferable to perform a plating operation while stirring the composite plating solution in order to uniformly disperse the fluorine compound fine particles. The stirring method is not particularly limited, and a usual mechanical stirring means, for example, a method such as screw stirring or stirring with a magnetic stirrer can be employed.

The plating conditions may be determined appropriately according to the material of the beverage manufacturing apparatus member as the substrate material, the type of the composite plating solution to be used, and the like. Generally, the solution temperature and pH are the same as in the case of the ordinary composite plating method. Values, current densities, etc. may be adopted.

In the present invention, when pitch fluoride or pitch fluoride and PTFE and / or FEP are used as the fluorine compound, the composite plating film formed on the substrate material as described above is treated at 150 to 380 ° C. Heat treatment is preferred. This heat treatment significantly improves the durability and surface water repellency of the composite plating film. For example, when using pitch fluoride fine particles alone,
The contact angle of the composite plating film by water droplet method reaches 135 degrees or more, and may even exceed 145 degrees, which is considered to be the measurement limit by this method. In addition, when mixed fine particles composed of pitch fluoride and PTFE and / or FEP are used, the contact angle becomes 120 degrees or more.
It is not clear why this heat treatment significantly improves the water repellency, but it also reduces the wettability due to the thermal modification of the composite plating film itself and the removal of surfactants (due to thermal decomposition, evaporation, sublimation, etc.). It is presumed to play a part.
Although the heat treatment time is not particularly limited, it is usually 1 hour.
It may be performed for about 0 to 30 minutes. If the heat treatment temperature is lower than 150 ° C., it is necessary to lengthen the processing time in order to obtain a sufficient processing effect, while if it is higher than 350 ° C., the plating film may be deteriorated.

[0039]

EXAMPLES Examples and comparative examples are shown below to further clarify the features of the present invention. In the text ''
The part surrounded by is a registered trademark.

[0040]

Example 1A (Preparation of base electroless plating solution) A base electroless nickel plating bath having the following composition was prepared. Nickel sulfate 20g / L Sodium hypophosphite 25g / L Lactic acid 25g / L Propionic acid 3g / L

(Preparation of Composite Electroless Plating Solution) Fine particles of polytetrafluoroethylene (hereinafter referred to as PTFE) as a fluororesin (particle diameter 2 μm or less, Daikin Industries, Ltd.)
Was added to an electroless nickel plating bath having the following composition, and a surfactant (trade name "MegaFac'F150", manufactured by Dainippon Ink and Chemicals, Inc., quaternary perfluoro) Ammonium salt (C ₈ F ₁₇ SO ₂ NH (CH ₂ ) ₃ N + (CH ₃ )
₃ + C1-) was added at a rate of 30.0 mg to 1 g of PTFE. Nickel sulfate 20g / L Sodium hypophosphite 25g / L Lactic acid 25g / L Propionic acid 3g / L

(Sample used as material to be plated) Test piece Main body: SUS430 50 mm × 50 mm × 0.5 mm flat plate ・ Can stop ring Main body: SUS304 Vertically split bamboo cylinder with outer diameter of 100 mm and height of 150 mm Can feed turret Main body: SUS304 Fan-shaped with a radius of 250 mm and an angle of 120 ° SUS430 is stainless steel widely used for cooking utensils and the like, and SUS304 is generally used in beverage manufacturing equipment. Adopted because it is stainless steel.

(Plating method) First, the above test piece
Using a can stop ring and a can feed turret as a negative electrode, a base nickel strike plating treatment was performed for 2 minutes at a liquid temperature of 25 ° C. and a current density of 10 A / dm 2 using a wood bath having the following composition. Wood bath composition Nickel chloride 245 g / l Hydrochloric acid 120 g / l Next, the above test piece, can stop ring and can feed turret were subjected to a liquid temperature of 90 ° C. and a pH of 4.6.
Under the conditions described above, electroless plating was performed until the film thickness became 3 μm while stirring with a screw to form an underlying nickel electroless plating film. Further, the test piece, the can stop ring and the can feed turret were subjected to electroless plating under a condition of a liquid temperature of 90 ° C. and a pH of 5.1 until the film thickness became 10 μm with screw stirring.
A nickel-PTFE electroless composite plating film was formed. After the plating was completed, it was washed with water and dried. The test piece, the can stop ring and the can feed turret having the obtained nickel-PTFE electroless composite plating film were heated at 350 ° C. for 30 minutes in a hot air circulating drying oven, and then left indoors at room temperature for 1 hour. Finally, a test piece having a nickel-PTFE electroless composite plating film, a can stop ring and a can feed turret were obtained.

[0044]

Example 1B PT in Preparation of Composite Electroless Plating Solution
0.5% by weight based on the weight of the solution
A test piece, a can stop ring and a can feed turret which had been subjected to the surface treatment in the same manner as in Example 1A, except for the above, were obtained.

[0045]

Example 1C PT in Preparation of Composite Electroless Plating Solution
1.5% by weight based on the weight of the solution
A test piece, a can stop ring and a can feed turret which had been subjected to the surface treatment in the same manner as in Example 1A, except for the above, were obtained.

[0046]

Example 2 PTF in the preparation of a composite electroless plating solution
In place of the E fine particles, a fluororesin tetrafluoroethylene-hexafluoropropylene copolymer (hereinafter, referred to as a fluororesin)
1% by weight of fine particles (referred to as FEP) (particle size: 2 μm or less, manufactured by Daikin Industries, Ltd.) and a surfactant (trade name: “MegaFuck” F150, manufactured by Dainippon Ink and Chemicals, Inc.) Test pieces, can stop rings and can turrets which were surface-treated in the same manner as in Example 1A except that 65.0 mg was added per 1 g of FEP fine particles and heat treatment was performed at 250 ° C. for 30 minutes. I got

[0047]

Example 3 PTF in the preparation of a composite electroless plating solution
In place of the E fine particles, 1% by weight of fine particles of a fluororesin, tetrafluoroethylene-per-fluoroalkylbiphenyl ether copolymer (hereinafter referred to as PFA) (particle diameter: 2 μm or less, manufactured by Daikin Industries, Ltd.), and Surfactant (trade name "MegaFac'F150", manufactured by Dainippon Ink and Chemicals, Inc.) at 30.0 g / g of PFA fine particles
mg at a rate of 350 ° C.
A test piece, a can stop ring, and a can feed turret which had been subjected to surface treatment in the same manner as in Example 1A except that the time was 0 minutes were obtained.

[0048]

Example 4 PTF in the preparation of a composite electroless plating solution
Instead of the E fine particles, 1% by weight of fluorinated graphite fine particles (particle size 1 μm or less, manufactured by Daikin Industries, Ltd.) was used, and a surfactant (trade name “MegaFac'F150”, Dainippon Ink and Chemicals, Inc.) was used. 4) per 1 g of fluorinated graphite fine particles
0.0 mg, and the heat treatment conditions were 350
A test piece, a can-stop ring and a can-feed turret which had been surface-treated in the same manner as in Example 1A except that the temperature was 30 ° C. for 30 minutes were obtained.

[0049]

Example 5 PTF in the preparation of a composite electroless plating solution
Fluoride pitch fine particles (particle diameter 2 μm
Hereinafter, 1% by weight of Osaka Gas Co., Ltd.) was used, and a surfactant (trade name "MegaFuck" F150, manufactured by Dainippon Ink and Chemicals, Inc.) was used in an amount of 2 g / g of fluorinated pitch fine particles.
5.0 mg and a heat treatment condition of 250 mg.
A test piece, a can-stop ring and a can-feed turret which had been surface-treated in the same manner as in Example 1A except that the temperature was 30 ° C. for 30 minutes were obtained.

[0050]

Embodiment 6 PTF is used in the preparation of a composite electroless plating solution.
0.5% by weight of PTFE fine particles (particle size: 2 μm or less, manufactured by Daikin Industries, Ltd.) instead of E fine particles
(Particle size 2 μm or less, manufactured by Daikin Industries, Ltd.)
% By weight, and a surfactant (trade name "'Mega Fuck'
F150 ", manufactured by Dainippon Ink and Chemicals, Inc.
Example 1A was the same as Example 1A except that only the amount calculated by the amount of fine particles used (g) × 30.0 + the amount of FEP used (g) × 65.0] mg was used and the heat treatment conditions were 250 ° C. for 30 minutes. Similarly, surface-treated test pieces, can-stop rings, and can-feed turrets were obtained.

[0051]

Example 7 PTF was used in the preparation of a composite electroless plating solution.
0.25% by weight of PTFE fine particles (particle size: 2 μm or less, manufactured by Daikin Industries, Ltd.) instead of E fine particles;
(Particle size 2 μm or less, manufactured by Daikin Industries, Ltd.)
5% by weight and 0.5% by weight of FEP (particle size: 2 μm or less, manufactured by Daikin Industries, Ltd.), and a surfactant (trade name “MegaFuck” F150, manufactured by Dainippon Ink and Chemicals, Inc.) ) To [Use amount of PTFE fine particles (g) × 30.
Example 1A except that the amount calculated as 0 + the amount of PFA used (g) × 30.0 + the amount of FEP (g) × 65.0] mg was used, and the heat treatment conditions were 250 ° C. for 30 minutes. Similarly, surface-treated test pieces, can-stop rings, and can-feed turrets were obtained.

[0052]

Example 8 (Preparation of composite electrolytic plating solution) 5% by weight of PTFE fine particles (particle size: 2 μm or less, manufactured by Daikin Industries, Ltd.) were added to a nickel electrolytic bath having the following composition. In addition, a surfactant (trade name “MegaFac'F150”, manufactured by Dainippon Ink and Chemicals, Inc.) and a quaternary perfluoroammonium salt (C ₈ F ₁₇ SO ₂ NH (CH ₂ ) ₃ N + (CH ₃ ) ₃ + C1-) in PTF
30.0 mg was added to E1 g. Nickel sulfamate electrolytic bath composition Nickel sulfamate 360 g / l Nickel chloride 45 g / l Boric acid 30 g / l

(Sample used as a material to be plated) Test piece Main body: SUS430 50 mm × 50 mm × 0.5 mm flat plate ・ Can stop ring Main body: SUS304 Vertically split bamboo cylinder with outer diameter of 100 mm and height of 150 mm Can feed turret main body: SUS304, 250 mm radius, 120 ° angle fan shape

(Plating Method) First, using the above test piece, can stop ring and can feed turret as a negative electrode, using a wood bath having the following composition, at a liquid temperature of 25 ° C. and a current density of 10 A / dm 2. A base nickel strike plating treatment was performed for 2 minutes. Wood bath composition Nickel chloride 245 g / l Hydrochloric acid 120 g / l Next, the above test piece, can stop ring and can feed turret were heated at a liquid temperature of 50 ° C and a pH of 4.
2. Electrolytic plating was performed under a condition of a current density of 2 A / dm2 with a screw agitation until the film thickness became 10 μm to form a nickel-PTFE composite plating film.
After the plating was completed, it was washed with water and dried. The test piece, the can stop ring and the can feed turret having the obtained nickel-PTFE composite plating film were heated at 350 ° C. for 30 minutes in a hot air circulating drying oven, and then allowed to stand at room temperature for 1 hour. And nickel-P
A test piece having a TFE electroless composite plating film, a can stop ring, and a can feed turret were obtained.

[0055]

Comparative Example 1 PTF in Preparation of Composite Electroless Plating Solution
The amount of the E particles added was 0.25% by weight based on the weight of the solution.
A test piece, a can stop ring and a can feed turret which had been subjected to the surface treatment in the same manner as in Example 1A, except for the above, were obtained.

[0056]

Comparative Example 2 The same test piece, can stop ring and can feed turret as in Example 1A were subjected to base nickel strike plating in a nickel wood bath in the same manner as in Example 1A.

Next, the test piece, the can stop ring and the can feed turret were each used as a negative electrode, and a screw was prepared under the conditions of a liquid temperature of 50 ° C. and a current density of 4 A / dm 2 using a nickel sulfamic acid bath having the following composition. While stirring, electrolytic nickel plating was performed until the film thickness became 10 μm. Nickel sulfamate electrolytic bath composition Nickel sulfamate 360 g / l Nickel chloride 45 g / l Boric acid 30 g / l

Further, the above-mentioned test piece, can stop ring and can feed turret were each used as a negative electrode, and a liquid temperature of 50 ° C., a pH of 3.0, and a current density of 20 A / dm were used using a chromium surge bath having the following composition.
Under the conditions of 2, while stirring with a screw, the film thickness was 0.2 μm.
Then, electrolytic plating was performed until the film thickness reached m to form a chromium plating film. After the plating was completed, the plate was washed with water and dried at 100 ° C. for 5 minutes to obtain a test piece, a can stop ring and a can turret. Sargent bath composition Chromic anhydride 200g / L Sulfuric acid 2g / L Chromium carbonate 2g / L

[0059]

[Comparative Example 3] An undercoat layer (thickness: 3 µm) was formed by applying an etching primer to a test piece, a can stop ring, and a can feed turret by air spray, and then a PTFE fluororesin paint was applied by air spray. To form a fluororesin coating film (thickness: 10 μm). Furthermore, after pre-drying these at 100 ° C. for 5 minutes,
A heat treatment was performed at 350 ° C. for 30 minutes to obtain a test piece, a can stop ring, and a can feed turret.

[0060]

EXPERIMENTAL EXAMPLE 1 Using the test pieces obtained in Examples 1 to 8 and Comparative Examples 1 to 3, the eutectoid content of the fluorine compound (volume%) was measured using a FACE contact angle meter. The contact angle of water was measured by a drop method, an adhesion test (JIS K 5400), and an impact deformation test (JIS K 5400) were performed. Table 1 shows the results.

Each of the obtained candy turrets was subjected to a stain resistance test, and each of the can stop rings was subjected to a test for easily removing stains. Table 2 shows the results.

The physical properties were measured by the following methods.

(1) Method of Measuring Fluorine Compound Eutectoid Amount (% by volume) A test piece was immersed in a nitric acid aqueous solution having a weight ratio of 1: 1 to dissolve a plating film, and then a membrane filter (average hole diameter) was used. : 0.2 μm) and filtered again for 80
After drying and cooling in a desiccator at 1 ° C. for 1 hour, it was measured by gravimetric analysis.

(2) Method of Measuring Contact Angle of Water The contact angle of water was measured by a droplet method using a FACE contact angle ("CA-A", manufactured by Kyowa Interface Science Co., Ltd.).

(3) Adhesion force test method (JIS K5400) 100 squares per cm 2 were put into a sample, allowed to stand under the following conditions, returned to room temperature, and subjected to a pressure-bonding peeling test with a cellophane adhesive tape. Was. (A) Left at 250 ° C. for 2 hours (b) Left at −10 ° C. for 2 hours (c) Repeatedly left at 200 ° C. for 1 hour and then left at −10 ° C. for 1 hour 10 times “/ 100” indicates that there was no peeling, and “50/100” indicates that half of the grids peeled.

(4) Impact Deformation Test Method (JIS K5400) An impact test was carried out at 20 ° C. by a DuPont method to confirm the damage of the coated surface of the deformed portion. Weight: 500g Drop height: 500mm

(5) Chemical resistance test method 100 squares per square centimeter were put into a sample, immersed in the following chemicals or materials for 96 hours, taken out every 4 hours, washed with water, washed with discoloration, Check whether there is no peeling, and after 96 hours, (3) adhesion test method (JIS
K5400) was used to perform a pressure-bonding peel test using a cellophane adhesive tape, and the results were used to make a determination. (A) Lacquer thinner (b) Surfactant (trade name "'Family'Fresh", manufactured by Kao Corporation) (c) Curry (trade name "'Kukure' Curry Dry", manufactured by House Foods Co., Ltd.) ( d) Koikuchi soy sauce (manufactured by Kikkoman Corporation) (e) Coffee beverage (brand name "Boss Plus One", manufactured by Suntory Ltd.) (f) Bleach for kitchen (brand name "Kitchen 'Hyter'",
Kao Co., Ltd.) 15% (g) Kitchen bleach (brand name "Kitchen 'Hita'",
(Kao Corporation) 100% The performance comparison evaluation was performed according to the following method.

(1) Soil resistance adhesion test method Using a SUS 304 candy turret used as a sample to be plated as a control, cans were put in a seamer using the candy turret obtained in each of the examples and comparative examples. After producing a coffee beverage (trade name "Boss Plus One", manufactured by Suntory Ltd.) for 19 hours, the stained state of each candy turret was visually evaluated.
When the adhesion of dirt was visually reduced as compared with the control SUS304 candy turret, the evaluation was "O", and when no difference was observed, the evaluation was "X".

(2) Test Method for Detachability of Adhered Soil Using a seamer using the can-stop ring obtained in each of Examples and Comparative Examples, a canned coffee beverage (trade name “Bos Plus One”, Suntory Ltd.) )) Was produced for 19 hours per day for a total of 10 days, and each can-stop ring was sprayed with an alkaline foaming detergent, allowed to stand for 5 minutes, and then washed with a jet water washer for 1 minute. After washing, the amount of dirt left on each can stop ring was visually evaluated. When dirt remained, it was rated "x", and when dirt was not confirmed, it was rated "o".

[0070]

Table 1 Amount of fluorine compound eutectoid (%) Contact angle Adhesion Impact resistance Chemical resistance Example 1A 20 120 0/100 No damage 0/100 Example 1B 10 110 0/100 No damage 0/100 Example 1C 30 130 0/100 No damage 0/100 Example 2 20 120 0/100 No damage 0/100 Example 3 20 120 0/100 No damage 0/100 Example 4 20 110 0/100 No damage 0/100 Example 5 20 145 0/100 No damage 0/100 Example 6 20 120 0/100 No damage 0/100 Example 7 20 120 0/100 No damage 0/100 Example 8 20 120 0/100 No damage 0 / 100 Comparative Example 1 5 105 0/100 No damage 0/100 Comparative Example 2-75 0/100 No damage 0/100 Comparative 3 - 110 (Note 1) Some Peeling (Note 2) (Note 1) only when left for 2 hours at 250 ° C. Some peeling (3/100). (Note 2) Brown rust-like substance was generated by kitchen bleaching agent 15% (100/100). Further, brown rust was generated by kitchen bleach 100% (50/100).

[0071]

[Table 2]

[0072]

From the results shown in Tables 1 and 2, the composite plating comprising the fine particles of the fluorine compound according to the present invention shows extremely excellent water repellency, adhesion, impact deformation resistance, and chemical resistance. In a beverage manufacturing apparatus having a surface coated with a composite plating film containing fine fluorine compound particles, the adhesion of dirt is significantly reduced or not adhered. It was found that the adhesive was excellent in detachability, and that it was possible to remove fixed dirt by simple washing.

The composite plating formed on the surface of the beverage production apparatus according to the present invention has both the inherent properties of the non-metallic fluorine compound and the inherent properties of the matrix metal.

More specifically, this composite plating firstly has a high lubricity, abrasion resistance,
It has antifouling properties, scorching resistance, etc., and exhibits particularly excellent heat resistance, chemical resistance, oil resistance, water repellency, etc. Therefore, usually, in the chromium plating often used as a plating of beverage manufacturing equipment, when the beverage is produced for a long time at a high temperature of 90 ° C. or the like, the contents of the beverage are scattered, and the scattered beverage is dried on the chrome-plated surface, Although scorching is remarkable, in the case of the composite plating having excellent antifouling properties of the present invention, the degree of scorching is remarkably reduced.

Further, it is difficult to easily remove the stains on the chromium plating even with an alkaline detergent, and it is necessary to wash the stains by hand with a metal scrubber. The dirt can be easily removed by washing with water.

The film of the present invention is a film having excellent adhesion, and the film itself is excellent in impact resistance, chemical resistance, and abrasion resistance. Even if the present invention is applied to a beverage manufacturing apparatus having a high use frequency and a high cleaning frequency, the effect is maintained, and a beverage manufacturing apparatus which is hardly adhered with dirt and which can be easily washed even if adhered. In addition, the beverage manufacturing apparatus of the present invention can obtain the effects of the present invention without changing the assembly of the design of the beverage manufacturing apparatus and operating under severe conditions of manufacturing, high-speed operation, and long-time operation. It is something that can be done.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshiyuki Maeda 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Osaka Gas Co., Ltd. (72) Inventor Tokio Takahashi 5- 2-5 Inside the Suntory Limited Technology Development Center (72) Naoshi Nagai, Inventor 2-140 Dojimahama, Kita-ku, Osaka City, Osaka Prefecture Suntory Limited (72) Inventor Shinya Matsumoto Yamazaki, Shimamotocho, Mishima-gun, Osaka 5-2-5 Inside Suntory Limited Technology Development Center

Claims (6)

[Claims] In a beverage manufacturing apparatus, a volume fraction of 10% is applied to the surface of a portion where a beverage contacts or a portion where a beverage adheres.
An easy-to-clean beverage manufacturing device, which is provided with a composite plating film containing fluorine compound fine particles of at least%. 2. The fluorine compound fine particles of the composite plating film are polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-perfluoroalkylvinyl ether copolymer, graphite fluoride and pitch fluoride. The beverage production apparatus according to claim 1, wherein the apparatus is fine particles of one or more kinds of fluorine compounds selected from the group consisting of fluorine compounds. 3. The beverage production apparatus according to claim 1, wherein the composite plating film is a metal plating base material in which a fluorine compound is eutectoid. 4. The method according to claim 1, wherein said fluorine compound fine particles have an average particle diameter of 2 μm or less.
A beverage production apparatus according to any one of the above items. 5. The composite plating film has a temperature of 150 to 380 ° C.
The beverage manufacturing apparatus according to any one of claims 1 to 4, wherein the apparatus is subjected to a heat treatment at a temperature of: 6. The beverage production device according to claim 1, wherein the beverage production device is an extraction device, a centrifugal separator, a beverage heating and cooling device, a filtration device, a tank,
The method according to any one of claims 1 to 5, which is at least one of a pipe, a valve, a homogenizer, a container transport device, a container cleaning device, a filling device, a sealing device, a labeling device, a beverage heating device, and a box packing device. Beverage manufacturing equipment.