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Silicone Rubber Soft touch coating
Introduce of soft touch coating
The product adopts low-temperature vulcanization technology. It is a two-component coating used as protection and decoration on the surface of silicon rubber products. The coating has the advantages of excellent adhesion(no fading after scraping),no cracking and white after folding, good friction resistance, smooth and fine hand feeling, satin and neat surface appearance, ect.
Feature of soft touch coating
The coating has the advantages of excellent adhesion(no fading after scraping), no splits after folding, good friction resistance, smooth and fine hand feeling, matte surface effect, satin and neat surface appearance.
Application of soft touch coating
The coating is mainly applied to general silicone products, such as sound case, silicone seal kits, tubing, baby’s bottle, tableware, ect. It is for preventing chemical pollution, yellowing, aging and dust. It can achieve smooth and fine hand feeling and improve the grade of the silicone products.
Use direction
Post curing the silicone rubber object at 150℃ for 1 to 2 hours and the surface should be cleaned up. Dilute the coating by white gas under ratio of coating content and white gas content of 1:4-6; and add the white gas separately in 3 times according to the principle of less to more quantity of each batch. Then fully mix with 2.0% catalyst CAT-SPL-15.The fully mixed coating is filtered through 200-300 mesh filter clothes, and is then sprayed on the object. Finally the sprayed object is vulcanized after 5 to 10 minutes’ standing in non-dust environment.
Temperature | Time |
At 180-220 degree centigrade | 6-10min |
At 120-150 degree centigrade | 20-30min |
At 90-100 degree centigrade | 30-60min |
At 60-70 degree centigrade | 60-90min |
Typical properties of soft touch coating
Properties | Values |
Viscosity (Iwata 2 # cup, 25 ℃), S | 8-10 |
Spray distance (cm), diameter (mm), pressure (mpa.s) | 20-25,0.8/1.0,0.2-0.3 |
Forcible dry (180-220℃),min | 10 |
Film ,μm | 15-20 |
Performance Valuation of soft touch coating
Testing item | Testing condition and method | Result |
Adhesion | The case method,Rubber 3M610# 3times | 5B |
Hot and humid | 80℃/98%RH | No error in 48h |
Salt spray resistance | 5%NaCl ,Temperature of spray box 35℃; Salt intake 1ml/h | No error in 72h |
Alcohol resistance | 99.3% alcohol,US75215 rubber, positive pressure 500g,Stroke16mm, Back and forth at speed of 68 /min | No error after back and forth 1500 times /20μm |
Weather resistance ultraviolet irradiation | Luminous energy 250μW/cm2 | No error after 300h |
Cold and thermal shock resistance | (80℃×1hr ~—40℃×1hr),transform in 15s | No error after 27 cycles |
Boiling washing fastness | 100℃ boiling water | No error after 2h |
Sweat resistance test | Packing the sprayed item by non-dust paper which is soaked in synthetic seawater(ph value 4.7 or 8.8),u`- Then put it in the environment of 55℃ and 85% RH | No error after 24h |
Package
5kg per tin and 15kg per bucket
Storage
Sealed and stored in a cool, dry and well-ventilated place at temperature of -5~37℃,air humidity between 55~85%. And the place should be waterproof, leakage-proof, sun blocked, high temperature prevented and far away from fire source.
Handling precautions
1. Fully mix after container opened. CAT-SPL-15 should be fully mixed after ink diluting when processing.
2. Keep good processing environment for spray. Non-dust treatment suggested. The temperature had better at 20℃ to 30℃, and the humidity under 55% to 75% since lower temperature will cause poor leveling and higher humidity will cause coating porosity and potential risk as static dust pollution
3. The object that will be sprayed had better post curing at 1 to 2 hours under temperature 150℃ to 200℃.Or poor vulcanizing of film will be caused
4. Vulcanized gradually depending on the vulcanizing result. High temperature and toasting immediately after spray may affect the smoothness and gloss of the surface. The pot life time of mixed ink is 8 hours, but sealed and cold storage can prolong the pot life.
1) Why choose your company?
1.Research power
2. Plentiful talent reserve
3.Patents
4.External cooperation
5. Customors
6. Strict quality control system
7. Production capacity
2) How do you guarantee the price is most competitive?
Compare with trading companies or distributors, as a manufacturer, the price we offer is first-hand; Compare with general manufacturers, with high quality, we have 10 years experience, strict production cost control enable us to offer best price for customers
3) What will be delivery time when I complete the payment?
We promise to deliver the materials within 3 working days after payments confirmed in our bank.
For more information about silicone rubber, pls feel free to contact with
Doris Guo
Wechat : +8613686608942(whatapp)
Skype : btlxcl