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THAIMETCOAT CO.,LTD.
Contract processing for surface treatment including fluorocarbon resin coating and sales of special lubricant

Case Study


Fluororesin coating

►Coating on a die for hot plate welding (automobile parts)  NEW!! ►Coating on mold for automobile parts (for body)  NEW!! ►Coating on a mold for a tractor seat  NEW!!
►Coating on mold for glass wool insulation  NEW!! ►Scratch protection coating for automobile bumper (200㎛ acrylic resin coating)  NEW!! ►Coating on rubber mold
►Coating on rubber mold (injection molding) ►Coating on diaphragm mold ►Coating on crawler mold
►Coating on fingerstall mold ►Molds for industrial gloves ►Mold of shoe sole
►Coating of toothbrush case on mold (vacuum molding)  NEW!! ►Coating the watch mold ►Coating on a tennis ball mold  NEW!!
►Coating on sports ball mold ►Diving, coating on mold for leisure goods  NEW!! ►Coating on a large-format baking mold  NEW!!
►Coating on mold for manufacturing wheels ►Coating on Adhesive Jig ►Coating on tire vulcanizing jig (bead ring)
►Coating on plating jig  NEW!! ►Equipment fixture - Guide parts ►Study 3ABS Resin Coating on Fusion Blade ​
►Coating on fusing blade  NEW!! ►Factory equipment (cutter) ►Factory equipment (coolant)
►Coating on a carbon plate of a restaurant specializing in cooking  NEW!! ►Microwave oven grill ►Coating on funnel for adhesive for rubber
►Calendar roll for rubber processing ►Coating on suction roll for sanitary products ►Equipment of chemical factory  NEW!!
►Coating on Tanks for Chemicals ►Spray grill ►Cleaning tray for precision parts
►Coating to wash basket ►Coating a cleaning basket  NEW!!  

Composite coating

►Coating on clamp ring used in tire manufacturing process ►Lifespan of mold life of tennis ball mold
►ncreasing durability of hot plate welding plates for automobile parts  

Uneven non-stick coating

►Non-stick coat at place where adhesive is used ►Non-stick coat at place where adhesive is used

Lubricating plating / lubricating coating

►Spool Bush of Plastic Forming Machine ►Tire Manufacturing Equipment Parts ►Turbo engine gasket

 

Fluororesin coating

Case1Coating on a die for hot plate welding (automobile parts)


■ Suggestions
Processed with uneven PFA coating because non-stickiness (sticking prevention) is important
(Hot plate welding is the oldest welding method among plastic welding methods.)

Case2Coating on mold for automobile parts (for body)

 

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Case3Coating on a mold for a tractor seat

■ Suggestions
Modified silicone resin coating

■ Result
Adopted as a measure to prevent sticking of urethane foam resin.

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Case4Coating on mold for glass wool insulation

■ Suggestions
Automotive parts. At present, I used Teflon tape by attaching it,
Switch to coating because it peels off due to heat during processing.
Also, tape could not be attached to the R part, and sticking had occurred.

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Case5Scratch protection coating for automobile bumper (200㎛ acrylic resin coating)

 

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Case6Coating on rubber mold


■ Content of request
Increase availability of press dies of rubber automobile parts (door lock damper cushion) Manufactured a large number, because it is manufactured with full rotation, shortening the time for mold maintenance is a challenge Currently, cleaning of the mold is done every 200 shots.
Meanwhile production stops for 3 hours. The part has a thickness of 10 mm and uses a release agent, but poor mold release.

Rubber material:NBR rubber Vulcanization condition:180℃×5min

■ Proposal contents
Select OKITSUMO NA 201 with non-stickiness, low μ, and repeated crimping characteristics. OKITSUMO NA201 MB - Unlike ordinary PTFE coats, out-gas deposits adhere to the rubber side every time due to product coatings with durability tests in crimp use, improving the number of accumulations in the mold. The adhering gas product can be removed by wiping with a thin acidic liquid, greatly improving the mold cleaning period. Coating improves mold release, improves workability, and improves worker's fatigue.

■ result
The dirty period due to outgas is extended to 500 shots, and the availability increases. As a combined effect, the mold separation was good and the work was improved.

■ problem
​​Since the air gun was pressed strongly against the same position of the mold, wear was observed.

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Case7Coating on rubber mold (injection molding)


■ Content of request
Improvement of extractability of bellows type drain hose mold The shape pullability of products after vulcanization is not good and production efficiency is poor. The cause is accumulation of dirt on the mold and mandrel due to the vulcanized gas.
Current surface treatment is not done. For that reason, we were cleaning the mold twice a day.

Rubber material: EPDM ​Rubber vulcanization conditions: 170 ℃ × 5 minutes

■ Proposal contents
Select OKITSUMO NA 501 which has non-stickiness, low μ, and repeated crimping characteristics. OKITSUMO NA 501 MB - Unlike ordinary PTFE coats, out-gas deposits adhere to the rubber side every time due to product coatings with durability tests in crimping applications, improving the number of accumulations in the mold. The adhering gas product can be removed by wiping with a thin acidic liquid, greatly improving the mold cleaning period. Coating improves mold release, improves workability, and improves worker's fatigue. For the mandrel, we propose a combined technique that plus hard asperity called blast and plating

■ result
​Even after continuous production for 2 weeks, it maintained non-stickiness, and the productivity was greatly improved. This effect maintains performance by immersing the weakly acidic liquid in the waste and wiping the surface before working.

Case8Coating on diaphragm mold

■ Content of request
Currently there is no surface treatment. Significant improvement in releasability and mold cleaning period

■ Proposal contents
PFA coated for the purpose of greatly improving releasability and mold cleaning period Since PFA is also resistant to acids and alkalis, washing of adhering gas products can also be removed in the usual process. Also, with blasting on the order of plastic beads, the gas product can be removed without damaging the coating.

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Case9Coating on crawler mold

■ Proposal contents
Considering cost and durability, OKITSUMO's PTFE + PFA 3 courts are submitted.

■ result
It is adopted as a durable trial OK.


Case10Coating on fingerstall mold


■ Content of request
Currently there is no surface treatment. Significant improvement in releasability and mold cleaning period

■ Proposal contents
PFA coated for the purpose of greatly improving releasability and mold cleaning period Since PFA is also resistant to acids and alkalis, washing of adhering gas products can also be removed in the usual process. Also, with blasting on the order of plastic beads, the gas product can be removed without damaging the coating.

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Case11Molds for industrial gloves

■ Content of request
Switching from another company's processing manufacturer

■ Proposal contents
Processed with PFA type fluorine coating as it is now The problem is that maintaining the shape of the convex portion (rubber cut) along the line of the glove For peeling of the coating film, peeling was carried out at high temperature treatment without applying Shot blasting as much as possible.

■ result
Productivity was improved by keeping the shape of convex portion (rubber cutting). Also, the time and labor for regular type correction is eliminated. (Recoating in about 6 months)

Case12Mold of shoe sole

 

■ Proposal contents
Receive PFA thick film processing request from the front.

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Example13Coating of toothbrush case on mold (vacuum molding)

 

Case14Coating the watch mold

■ Content of request
Depending on the gas emitted from the elastomer, cleaning frequency is high and mass productivity does not rise.

■ Proposal contents
Coating was carried out for the purpose of suppressing mold release and adhesion of gas gangs.

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Example15Coating on a tennis ball mold

Case16Coating on sports ball mold


■ Content of request
Until now, blast only. Balls were produced by applying fluorine release agent.
Blasted in vulcanized dirt for 1 week. As a problem, sticking caused by vulcanization stains caused deformation of the ball.

■ Proposal contents
Recommended PTFE coating, reduce frequency of removal Reduce ball deformation failure, abolish use of release agent

Coating used: OKITSUMO NAX 296 3Coat

■ result
Frequency of removal: Extended from 1 week to 2 months
Ball deformation: decreased from 188 months to 59 months / month
Release agent application: decreased from 20 times / day to 2 times / day

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Example17Diving, coating on mold for leisure goods

Example18Coating on a large-format baking mold

■ Suggestions
Same PTFE coating as frying pan

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Case19Coating on mold for manufacturing wheels

■ Proposal contents
As a workability improvement, a non-adhesive coat is applied to a mold frame for compressing a mixture of resin and abrasive. As a result of the trial, PTFE used in frying pan among several kinds of fluorine coats is adopted as effective.

Case20Coating on Adhesive Jig


Before coating

After coating

■ Content of request

Material: SUS304

Jig for applying hot melt type adhesive. It wasteful time was spent cleaning due to sticking of the adhesive after the work was finished.

■ Proposal contents
By coating, the adhesive after cooling is easily peeled off, and work is improved.

Coating agent used: OKITSUMO No. 8403 TSTT

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Case21Coating on tire vulcanizing jig (bead ring)


■ Content of request
Frequent tire sticking to the upper ring after vulcanization, production delay occurred. In addition, the tire with long sticking time was deformed and became NG.

■ Proposal contents
Advance PTFE type fluorine coating excellent in releasability. It is twice as long as PTFE + mica as a requirement for durability improvement. For chipping resistance, PFA type fluorine coating is proposed again.

■ result
As a result of carrying out the trial with PTFE from the releasability, tire sticking disappeared, and mass productivity improved. However, it was judged that it was difficult to introduce it to the work site after peeling the coating film with shot blasting once every two weeks. Although somewhat sacrificing the releasability, adhesion and coating film strength were improved by adopting hard PFA + undercoat (ceramic) of the coating film, and it was adopted.

Example22Coating on plating jig

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Case23Equipment fixture - Guide parts

■ Proposal contents
Demand for non-stick fluorine coating.
We recommend Okitsumo's PTFE coat with a proven track record in frying pan.

Case24Study 3ABS Resin Coating on Fusion Blade ​

■ Content of request
At the time of thermal fusion, the melted plastic sticks to the blade, the fused surface becomes uneven, and it is scraped in the subsequent process. Also, when cooled it can not remove the plastic attached to the blade.

■ Proposal contents
Required properties: Non-stickiness retention at high temperature (200 ° C). OKITSUMO No. 8403K having both heat resistance and non-adhesiveness was coated.

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Case25Coating on fusing blade

 

Case26Factory equipment (cutter)

■ Proposal contents
Request from Malaysia Factory mechanical parts - Demand for non-sticky fluorine coating on guillotine blades for cutting adhesive substances.We recommend Okitsumo's PTFE coat with a proven track record in frying pan.

■ result
As expected, there was no sticky substance adhesion and it was good. Lifespan is adopted for new equipment and unknown.

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Case27Factory equipment (coolant)


■ Proposal contents
Overall coating on stainless steel parts At the site where water is used, corrosion resistance and smoothness, demand for release.
We proposed a thick film specification of PFA (film thickness 50 μm).

■ result
It was adopted.

Case28Coating on a carbon plate of a restaurant specializing in cooking


■ Suggestions
A new product from a carbon maker with a proven track record in rice cookers and cookware. Utilizing the characteristics of carbon, sold as a heat insulation plate for steak and yakitori.
It was commercialized by coating it with PTFE, which has a proven track record in frying pans.

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Case29Microwave oven grill


■ Proposal contents
Overall coating on stainless steel parts
Machine the designation number of OKITSUMO company
PES + PFA coating agent 10 to 20 μm

Case30Coating on funnel for adhesive for rubber


■ Proposal contents
Fertilizer used when injecting adhesive into automatic machine in production line. Receive a request for the same PFA coating from the results of the pot for dividing.

■ result
Cleaning time at the end of work can be shortened.

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Case31Calendar roll for rubber processing

■ Content of request
Non-stickiness requirement with raw rubber

■ Proposal contents
From the state of the roll (coated with scratches) before coating, PFA with coating film strength was coated after the entire blast treatment.

■ result
A satisfactory surface state is obtained.


Case32Coating on suction roll for sanitary products

■ Content of request
Until now, I sent it to Japan and had fluorine coating done.
I am requested as time reduction and cost reduction.

■ Proposal contents
Required characteristics: With emphasis on non-stickiness, processed with OKITSUMO NA 201 MB with a proven track record in frying pan Brought in the morning, delivered on the same day finish

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Case33Equipment of chemical factory

■ Suggestions
Simplification of cleaning work (remaining amount can be removed only by high-pressure cleaning)


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Case34Coating on Tanks for Chemicals

■ Content of request
Processing into SUS tank for prevention of sticking of products to tank
By coating, we try to shorten the cleaning work time after processing.

■ Proposal contents
Requirement of heat resistance and non-tackiness
It is recommended that PFA with smooth coating film and hard film quality among fluororesins.

■ result
It is adopted as a check pass of chemical resistance in the test panel.

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Case35Spray grill


■ Proposal contents
Currently it has requested peeling externally at a frequency of once every three months. In order to peel off the coating film by tapping, the tray was bent and problems such as dislocation of the welded part remained. We also examined coat film quenching by heat treatment, but we abandoned the cost high. Applying fluorine coating to the tray makes it easy to drop the overspray after drying. PFA with hard film quality was used in fluorine coating.

Case36Cleaning tray for precision parts

■ Proposal contents
Proposal of fluorine coating on SUS tray for the purpose of eliminating rubbing due to microvibration during ultrasonic cleaning. The thickness was set to 40 μm or more, and the solvent, acid and alkali resistance was taken into consideration.

■ result
In addition to non-stickiness, slipperiness is also good, it will be spread laterally to other trays.

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Case37Coating to wash basket

■ Proposal contents
Processing to prevent scratches during cleaning. Material: SUS 304

Case38Coating a cleaning basket

 

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Composite coating

Case1Coating on clamp ring used in tire manufacturing process


■ Content of request
In the tire molder (former) process, slip agent was applied to preliminarily molded unvulcanized rubber and it was molded by hydraulic pressure.
If the tire can not be shaped uniformly, the balance becomes poor.
Lubricant is a foreign matter for tires, but I want to avoid using, but there is nothing to change.
For customers' requests, we carried out a typing process without using lubricant. I want to lower the defect rate.
The lubricant used is ethylene glycol, it is hygroscopic, and the ring also rusts.

Clamp ring material SS400

■ Proposal contents
Although it is difficult to reduce the coefficient of friction to liquid, PTFE is the lowest μ among solids, and it is proposed in a combined technique that plus hard asperities called blast and plating
As a result, the use of lubricant could be reduced to 2 times / day, and together therewith the deformation failure decreased.

Processing material - sandblast + Cr plating + NA 501 MB Surface roughness due to blasting is Rz 45 μm

Case2Lifespan of mold life of tennis ball mold


■ Content of request
Currently, other companies' PFA type fluorine coat was used.
This coating agent is a product which is superior in releasing and non-sticking because the surface becomes a hard and smooth film.
Even with a fluorocarbon coating with good performance, sulfur or vulcanization gas at the time of vulcanization etc. disappears in about 2 weeks and reprocessing of the fluorine coating is necessary, after deteriorating the coating film at high temperature and then shot blasting It was peeled off.
Due to frequent repetitive shot blasting, the mold gradually deviated from its original dimensions, which had a great influence on quality. As a result, it was exchanged with an average life expectancy of 2 years.

Mold material S50C

■ Proposal contents
Select PTFE resin coat as fluorine coat that can be peeled off without using hard alumina.
In order to make irregularities on the surface, shot blasting using only one time alumina is performed, and the surface is guarded with hard chromium plating. Finished with PTFE coat of 1 coat type which has proved to be rubber mold for shoe soles on it.
As a result, the releasability maintains the current state and damage to the mold during reprocessing is completed by blasting with glass beads, damage of the mold can be avoided.

Processing material - sandblast + Cr plating + NA 239 (with actual results in cooker)

Case3Increasing durability of hot plate welding plates for automobile parts

■ Content of request ①
Heat-fusing plate which was thickly painted fluorine-processed from Japan was imported for non-adhesion purpose and used.
Approximately one month after sticking of paint film dents, exposure of the substrate occurred. From the hot plate temperature of PP, from the (320 ℃) ​​it is possible to read the indentation phenomenon of the fluorine coat at present.
The fluororesin has a tendency to soften at 200 ° C. or higher, and in the welding process where machining is performed at the same position, only time is obtained by thick coating.

■ Proposal contents
Shod blasting gives the surface irregularities, guards the surface with Cr plating, and takes the form to reinforce with 1 coat PTFE coat.
The heat resistance of Cr plating is 500 ° C, and finish with 1 coat fluorine coat on this.
The result is the combination of this time and it is three times or more than the current life expectancy.
Also, I was pleased with the great merit that I did not need to send it to Japan.

Processing material - sandblast + Cr plating + NA 501 MB


■ Content of request ②
Heat-fusing plate which was fluorine-processed from Japan was imported for non-adhesion purpose and used.
It is a soft PVC welding, and it has a problem of rusting facilities such as plates due to the influence of chlorine gas.
Therefore, the plate was used disposable, and had a lot of problems in terms of cost

■ Proposal contents
We propose cost saving by upgrading processing durability and reprocessing.
Based on the above results, trial with blast + Cr plating + fluorine coat will be adopted as merit in the results and estimate price.

Processing Material - Sand Blast + Cr Plating + NA 501 GRAY (Since the PVC is black, there is an indication of gray color)

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Uneven non-stick coating

Case1Non-stick coat at place where adhesive is used



​​Roll surface

■ Content of request
Coating on shaft used in sanitary goods adhesion process

■ Proposal contents
Handle 8403 made by Okitsumo with high tackiness on the knurled shaft surface

■ result
It is adopted as markedly increased non-stickiness.

Case2Non-stick coat at place where adhesive is used

■ Content of request
Interior parts for automobiles - Molds for bonding nonwoven fabrics

■ Proposal contents
Even with fluororesin coating, deposits accumulated in several hundred times. Try with uneven non-adhesive coat


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Lubricating plating / lubricating coating

Case1Spool Bush of Plastic Forming Machine


 

■ Proposal contents
Fluorine compounds are applied at regular intervals to improve the flow of plastics molten at high temperature and processability. Nickel plating + PTFE 25% which can be made with a uniform film can be processed even in a narrow hole as a measure against contamination of coated fluorine products


Case2Tire Manufacturing Equipment Parts

■ Proposal contents
Used to prevent sticking of raw rubber before vulcanization

■ result
Adopted as effective


Case3Turbo engine gasket

■ Proposal contents
Boron coat with heat resistance and lubricity

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Latest Update 18 Sep 2020
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