Biological instrument, membrane switch, membrane button

Shenzhen Wangrongxin Technology Co., Ltd. is a company specializing in the design and production of film switches, film panels, PVC veneers, EL backlight, with sophisticated equipment, complete production processes and a strong professional and technical team. Products are widely used in household appliances, industrial control, instruments, communications, medical equipment and so on.

The company has been committed to high-precision and high-quality product manufacturing with the service tenet of & ldquo; quality first, affordable price, service supremacy & rdquo. The company has skilled production technicians, and the core members of the entrepreneurial team are also professionals engaged in the industry for nearly 10 years, with excellent quality management experience. With strong technical support and perfect quality assurance, we comprehensively implement the quality management of ISO 9001, strictly control the production process and test and test the finished products, in order to effectively safeguard the interests of users and meet the excellent pursuit of customers, and have strong capacity of mass production of various series of thin film switches and thin film panels.

& ldquo; a plough, a harvest & rdquo; after years of development, the strength of the company has been growing. At present, the company has more than 50 management, sales, engineering and production technicians, with a monthly output of 100,000 sets. The products have successfully entered the European Union, the United States, Southeast Asia and other markets.

The company will be the first-class quality, excellent service, and strive to provide customers with high-performance, high-quality products, sincerely serve every customer!

Welcome all friends to contact and consult!

Types of Thin Film Switching Materials

Polyvinyl chloride (PVC) is stable to acids, alkalis and salts at 60 C from 0.175 to 0.5/smooth room temperature. Good wear resistance, fire resistance, self-extinguishing, noise elimination, good electrical insulation. Thermal stability is poor. Low-cost ordinary signs and panels

Polycarbonate PC-60-120 0.175-1.0 has high light transmittance, low water absorption, good dimensional stability, excellent flexural, tensile and compressive strength, excellent heat resistance, cold resistance, electrical insulation and atmospheric aging resistance. Drug resistance is poor, fatigue resistance is poor, stress cracking is easy to occur. The output interface terminal circuit is generally made of carbon material printed, and there is no protective coating. It is gradually oxidized by air to form an exfoliation layer, which eventually leads to circuit breakdown and life termination. This is the most vulnerable place for membrane switches to fail, mainly in the environment. It is decided that the physical damage time is 3-10 years, whether used or not. Generally, the application scope is the most extensive. In addition to meeting the requirements of most thin film switch panels, the high transmittance of smooth PC can meet the requirements of liquid crystal display windows.

Sand surface polyester (PET) - 30 ~ 120 C 0.1 ~ 0.2 smooth surface resistance is good, insoluble in general organic solvents, alkali resistance. It has excellent mechanical properties, electrical properties, rigidity, hardness and the greatest strength and toughness in thermoplastics. It has low water absorption, excellent wear resistance, friction resistance and high dimensional stability. The tensile strength is comparable to that of aluminium film, which is much higher than that of PC and PVC. Low cost because the surface is difficult to be processed into sub-light type, textured PET is the most ideal substrate for thin film switching circuits. Textured PET is suitable for products with high surface requirements or LCD windows.

Thickness of material:

The thickness of plastic substrates is 0.25mm or less, which is called thin film. They are mainly used as the surface layer of thin film switch. The back of the plastic substrates is printed with various indicative patterns and words to indicate the operation area of the corresponding switch keys. The thickness of the plastic substrates depends on the size of the panel and keys. The material is thicker, the contact power is increased and the reaction is slow. It is too thin, feels bad when touching, and has no obvious rebound. Thickness above 0.25mm is called plate, which is not suitable for stereo bond forming. It can be used as an indicator panel of keyless operation area or as a lining plate of thin film switch to improve its hardness.

Line Layer Printing Materials:

Polyester (polyphthalate) film (Potyester referred to as PET) should be used as the base material of the circuit. It has good insulation and heat resistance, high mechanical strength, transparency and air tightness, especially flexibility and high elasticity. It is an ideal material for making thin film switching circuits.

Technical parameters of thin film switch

Electrical Performance of Thin Film Switches
Operating voltage:≤50VDC；
Working current:≤100mA；
Contact resistance: 0.5-10 & Omega;
Insulation resistance:≥100MΩ；
Substrate pressure resistance: 2kDVC;
Springback time:≤6ms；
Loop resistance: 50 & Omega;, 150 & Omega;, 350 & Omega; three grades, or determined by user needs;
Pressure resistance of insulating ink: 100VDC.
Mechanical Properties of Thin Film Switches
Reliability service life: > 1 million times;
Closed displacement: 0.1-0.4 mm (no tactile) 0.4-1.0 mm;
Ability of standard-building: 15-750g;
Silver slurry migration: at 55 C, 90% temperature, after 56 hours, the second line is 10MΩ / 50VDC;
There is no oxidation and impurity on silver paste line.
Silver paste width≥0.3 mm, minimum interval 0.3 mm, line edge less than 1/3, line gap less than 1/4 line width;
Pin spacing standard 2.542.501.271.25mm;
The curvature resistance of the lead-out wire is d=10mm steel. Rod press 80 times continuously.
Environmental Performance of Thin Film Switches
Operating temperature: - 20 ~70 C;
Storage temperature: - 40 ~85 ~95%±5%;
Atmospheric pressure: 86-106 KPa.
Printing Indicators of Thin Film Switches
Printing Dimension Deviation±0.10mm, unclear outline±0.1mm；
Register deviation±0.11mm/100mm, all the insulating ink covers the silver paste circuit.
No ink scattered, no handwriting incomplete;
The chromatic aberration is not greater than the second level.
No creases or paint stripping shall be allowed.
Transparent windows are transparent, clean and uniform in color. No scratches, pinholes or impurities are allowed.
Thin film switch, also known as touch keyboard, thin film panel, etc., is a plastic electronic product, which is made of soft materials such as PC, PVC, PET, FPC and double-sided glue. It uses screen printing technology to make multi-plane combination seal, which integrates graphics, keys, sign display, conductivity and electronic switch functions.

Sample picture of thin film switch

Thin Film Switch Picture 1 Thin Film Switch Picture 2

Thin Film Switch Picture 3

Film Switch Picture 4 Film Switch Picture 5