Silicone button is a product of silicone products, silicone keys with excellent heat resistance, cold resistance, environmental resistance, electrical insulation, fatigue resistance and other characteristics. Silicone button Maximum quality requirements are not broken, in the day-to-day application will have a certain probability of rupture of the undesirable phenomenon, of course, Silicone Rubber Keypads the silicone button in the production will also be broken bad.
Silicone button is also called Silicone button, Silicone rubber button making glue. Silica gel is made of raw materials through the curing machine, silicone button products, commonly known as "silicone button." Silicone button is a kind of silica gel products, while Lu Kai silicone button with good resistance to high pressure, wear-resistant, reliability, durability.
High-pressure: the use of high-quality silicone raw materials, Silicone Rubber Keypads and special surface treatment technology, testing can withstand 110KV breakdown.
Reliability: The original dual-conductive carbon-particle structure increases the reliability of one-fold more than the conventional single carbon-particle structure.
Anti-wear: silicone According to the foot of the surface of a unique concave design, Silicone Rubber Keypads to solve the process of the unique hollow printing problem, to ensure that the key font permanent clarity.
Durability: The use of high-quality silicone raw materials, through the life test, detected more than 2 million times, far beyond the same industry 500,000 times of life. Raw materials: Food grade silicone materials provided by Guangdong polymerization
Vulcanization Molding: vulcanization Molding plate vulcanizing machine, according to the function of vulcanizing machine has manual, automatic and vacuum models, molds have on, the next two layers of male-female modules (special keys have three or even multimode), Silicone Rubber Keypads the production of the first master mold, the public mold into the conductive gel black tablets and chip weighing of the silicone button raw materials
Press A, according to the pressure about the 50-80g, generally applicable to the computer keyboard, Calculator button of the silicone button, the range of pressure is not high, lower than, Silicone Rubber Keypads very easy to press, suitable for the need to often click on the use of silicone buttons.
Second, according to the pressure about 80-120g, generally applicable to electrical keys, remote control buttons These, according to pressure appropriate, feel comfortable, resilience is better. Third, according to the pressure in 120-180g, generally applicable to the impact of equipment, industrial instrumentation, mechanical remote control, according to the pressure relative to the second is much larger, Silicone Rubber Keypads generally applicable to the relatively large silicone press. Key, resilience is also more superior, but not suitable for frequent clicks of the product. Four, according to the pressure of more than 180g, the general pressure of the silicone button is relatively rare, suitable for special industries, such as medical, aviation and other industries, Silicone Rubber Keypads a short time to use the finger count comparison.
Production process of silicone button
Raw material silicone key production raw materials are silicone rubber mixed rubber, vulcanizing agent used double "2.5, color materials used color powder or silica gel, release agent using KEP 110 or zinc stearate. Hardness calculation formula with 4o% hardness of 70 degrees of raw materials and 60% hardness of 50 degrees of raw materials mixing, the hardness of the product is: (70x0.4) + (50x0.6) degree = 58 Degree tooling can be processed according to the key drawings or samples provided by the customer, making the silicone button mould, Silicone Rubber Keypads The test model confirms that the structure and the production process can be mass produced. Before the production of molds generally need to sandblasting mold surface treatment, if the silicone button surface requirements for the bright surface is required to spray glass sand, requirements for the fog surface is required to spray emery or mixed sand, if no requirements can be sprayed mixed sand.
According to the quality of customer order, Silicone Rubber Keypads specifications to determine the hardness of the adhesive and the background of the key, according to the formula in the open refining machine or the mixer on the refining, according to the test when the formulation of the plastic material specifications out of the film and PE film package, and prepare the external release agent, conductive gum black tablets and various tools. Please refer to the previous written article How to do a good job before the production of silicone products?
VULCANIZING Molding plate vulcanizing machine, according to the function of vulcanizing machine has manual, automatic and vacuum models. Mold from the upper and lower two layers of male-female modules (special miscellaneous pieces also have Sanbanxi mold), the production of the Master mold, Silicone Rubber Keypads on the public mold into the conductive gum black tablets and chip weighing of the silicone button raw materials, if there is a demand, the mother
Plug in the color key in the mold, ready to heat after the mold, pressure vulcanization. The main control parameters of vulcanization are temperature, Silicone Rubber Keypads pressure and vulcanization time, the typical operation
The process conditions are: temperature 160℃±10℃, Pressure 15~20mpa, time 150~200s (depending on the height of the key, such as the key type is shorter and smaller 30~40s can also be completed). After vulcanization, the mold will be launched vulcanizing machine, careful to open the master mold, with the wind gun, Silicone Rubber Keypads slowly will be the silicone button from the mold out can. Two times after vulcanization of semi-finished products according to customer requirements to determine whether two vulcanization, in order to remove the product residual sulfide decomposition products, improve product performance. Conventional two times vulcanization using a vertical oven, Silicone Rubber Keypads with 180~200℃ temperature baking 2H can be completed. Screen printing, fuel injection, laser engraving in accordance with customer requirements on the surface processing of silicone key products on the surface of silk screen printing, fuel injection, laser carving process, completed after the delivery of goods inspection. 1. Screen printing, the selection of the corresponding screen printing and printing ink surface characters of silk screen, silk screen after the inspection of goods, unqualified with solvent wipe reprint, qualified to send to bake. 2. Fuel injection, Silicone Rubber Keypads according to customer requirements on the silicone button surface spray oil, matting, PU and other inks, after spraying immediately baked, baked after testing, unqualified selection of rework or scrap, qualified to send to the next process 3. Radium carving, according to customer requirements on the surface of Silica gel button processing. Punching and cutting, self-disassembly according to the design of silicone button die selection punching or manual removal will be the silicone button extra burrs removed and trimmed clean, so that the surface of the silicone button more beautiful Process Control 1. Process Control during vulcanization molding This is the first stop of process control. The main inspection items are size, elasticity, hardness, stain, chromatic aberration, lack of material, and so on, to remove bad products, Silicone Rubber Keypads timely detection of major adverse problems, and feedback production requirements to improve to reduce the emergence of defective products. 2. Screen printing when the quality control inspection focus on the shadow, screen printing, font ambiguity, wear resistance. Bad products can be used in white oil solvents, such as wipe, silicone button after natural air drying reprint. 3. Finished product control including print, no need to print products, has rushed goods, such as the full inspection, the detection of a variety of defective products after packaging.