Classification, characteristics and application of shading tape
Shading tape is a kind of tape that uses a special imported environmental protection substrate and the surface is specially treated to realize partial shading or complete shading, and the back is coated with strong adhesive durable adhesive on one or both sides. Shading tape is a black single / double-sided tape with shading function. It adopts the black film made by unique printing process as the base material, which has excellent shielding and insulation.
Shading tape, also known as opaque tape and widely known as shading material, is an adhesive material that can be used for border wrapping of LED and LCD display screen, shielding light source and blocking light source penetration. It has excellent shading performance, soft material, firm adhesion and not easy to warp. It is a low-cost and effective auxiliary material product used on LED and LCD.
Classification of shading tape:
By material: shading paper tape and shading film tape;
By color: bright silver shading tape, dumb silver shading tape, black silver shading tape, black shading tape (black and black shading tape), black and white shading tape, silver shading tape and white film (white shading tape);
According to the adhesive property: single-sided adhesive shading tape and double-sided adhesive shading tape are divided according to the degree of shading: semi transparent shading tape and completely opaque shading tape;
According to the substrate, it is divided into single-layer release bottom shading tape and double-layer release bottom shading tape.
Characteristics of shading tape
1. Black pet substrate surface can be matted.
2. At 25 μ Conduct 180 ° peel test under the condition that mpet polyester film is mounted and the tensile speed is 300mm / min.
3. It is processed in class 1000 clean environment with excellent cleanliness.
4. It is printed with black coating, with excellent shielding. Black coating has excellent insulation.
5. Storage temperature: 5 ~ 30 ℃, avoid direct sunlight, low temperature (below 0 ℃), high temperature (above 40 ℃) and high humidity (above 70% RH).
Application of shading tape
1. The shading tape can be used to fix the LCD and backlight module of electronic equipment. For electronic equipment, the fixing of LCD panel and backlight module is very important. Only when the LCD panel and backlight module are fixed, can the normal use of electronic equipment be guaranteed.
2. Shading tape can be applied to shading. In the process of using electronic equipment, the shading tape must be applied to the electronic equipment, so that the electronic equipment can be shaded. Generally speaking, the shading tape has a matte black surface. The matte black surface can also bring many other benefits to the shading tape. For example, it can make the shading tape have certain scratch resistance and good scratch resistance, which can not only make the surface of the shading tape beautiful and will not affect the use experience of electronic equipment, It can also protect electronic equipment. The shading tape with matte black surface can also have certain anti fingerprint performance, that is, it will not leave fingerprints on the electronic equipment during the use of electronic equipment.
3. It is applicable to mobile phone screen and LCD screen. It has the functions of black shading and back reflection. It is mainly used for shading and reflection of laptop, mobile phone, PDA, led, LCD and other products. It can also be used for shading of luminous keyboard, ultra-thin advertising light box, backlight plate (sheet) and other products.
Shading tape commonly used in electronic field
The current mobile phone design trend is to increase the use function and ensure the lightness of the product at the same time. When you use your mobile phone at night or when the light is dark, the LED light source placed under the mobile phone button allows us to see the letters and numbers on the button. At present, some mobile phones put a layer of flexible keyboard light guide film between the mobile phone keys and the light source, which can transmit the LED light source evenly and with low loss, so as to reduce energy consumption.
There is also a kind of shading tape related to mobile phone LCD. The tape is composed of black and white layers. When in use, the white part faces the backlight, which can continuously reflect the light inside, so as to enhance the brightness; The black part prevents light from leaking out.
▼ black and white glue
Black and white adhesive, belonging to a kind of shading tape, is mainly used in optical display devices to play the role of adhesion and shading. It is made of pet and coated on both sides.
▼ black and white adhesive properties
1. With black-and-white two-color special substrate, the white surface absorbs very little light;
2. Excellent shading performance;
3. It has high adhesion to all kinds of adherends.
▼ general purpose of black and white tape
1. Used for fixing LCD (liquid crystal display) and backlight module;
2. Used for shading and fixing backlight module and LCD (liquid crystal display).
3. A cloth for sticking to the upper side of the product light source or the side of the product;
4. It mainly plays the role of shielding and reflecting light.
Application of black and white glue in mobile phone
Black and white shading tape is used in color screen, mobile phone backlight, GPS backlight and other electronic display manufacturing industries. It has the advantages of moisture resistance, UV resistance and good shading effect, and has moderate viscosity. There is no residual glue after tearing. Black tape has high density, can completely block light, and has good viscosity. It is not easy to break in high-temperature and high-speed operation.
With the rise of smart products in recent years, especially smart phones have become a consumption trend of contemporary young people. Black and white glue is used as backlight frame fixing and shading die-cutting parts, and black and white glue is needed on each mobile phone. Therefore, the production quantity of mobile phones is basically the demand of the whole backlight industry for black and white double-sided glue.
Application of black and white glue in other electronic and digital products
The black surface has excellent shading and the white surface has good reflectivity. It has high viscosity, weather resistance, aging resistance and punching processing properties for pet and stainless steel.
The light shielding tape in the electronic industry not only needs low light transmittance, but also needs strong adhesive force, anti rebound, good adhesion and die cutting. This tape is widely used in notebooks and tablet computers (light blocking and fixing of touch screen and windows), smart phones (light blocking and fixing of touch screen and main parts), televisions and displays (light blocking of backlight module and fixing of LED light strip), etc.