Now we can make the poly dome,no only the metal dome, snap dome and dome array, if you have this inquiry, please also don’t hesitate to contact with us.
Hereby I introduce poly dome shortly. Poly dome is formed by polyester film hot pressing, and with a switch function. Mainly used for remote control switches,
membrane keypad, flexible pcb, etc..
Poly dome can be printed by silver oil or carbon oil, or silver and carbon oil printing is also an option. Poly dome typically used in two ways: One is poly dome glue with rubber adhesive tape, poly dome’s top adhesive tape to use double-sided rubber adhesive tape, The other is poly dome glue with the PCB board to use, poly dome do not need the top adhesive, but use double-sided rubber adhesive tape to the bottom.
CMD Manufacturer is your best parter of the poly dome, snap domes, metal domes and dome arrays.
Today we hereby to introduce the details of dome array production process of mold. Please see below steps:
1, The first to punch spacer by mold (punch the dome array holes and ventilation slots);
2, Then put mylar cover on spacer;
3, Use mold to punch location holes(for LED lights or others);
4, then cut the dome array into appropriate size;
5, Assemble metal domes by tooling;
6, QC for the loss, incorrect and doubles metal domes;
7, Cover protective film on back;
8, Punch the outline of dome array;
9, Final inspection (including the product appearance, dirt, less metal domes, etc..);
10, Packaging.
The above is the details of dome array production process of mold, if you want to know more, please contact us.
Recently we received several customers asked whether the metal domes can afford high temperature reflow? and the metal domes if will have the deformations or force changed?
The material of metal dome is stainless steel, in general, our metal domes operating temperature is -40-100 degrees, so if the operating temperature close to 100 or more than 100, there is definitely change for metal sanp domes, including force and resistance.
Some of the customers put the metal domes on the PCB, FPC and then SMT soldering, the temperature reaches 200 degrees, the performances will be definitely affected, and changed. Although we do not do this test, but is certainly metal snap domes can not pass the high temperature reflow. So now if it’s the only way to put metal dome on the PCB after reflow temperature , so does it work?
We hope to discuss with the friends who know this issues of metal domes, please leave your message. CMD manufacturing engage in providing a variety of solutions for customers.
What’s the snap dome force, Re-force and click ratio? Please see below for details.
Snap dome force is that the amount of the force when you press down the snap dome to contact the pcb. It should be stability of the force in order to ensure quality of the snap dome.
Re-force is the pressure let the snap dome return back to top.
Click ratio=(Force-Re-force)/Force*100%, the click ratio is narmal between 35%-75%
If you want to know more details about snap dome, please contact us for more information.
CMD Manufacture specialize in metal domes, snap domes, metal dome array, dome sheet, poly dome!!!
