Die cutting material AB double sided tape structure and influencing factors

With the intelligent transformation of mobile phone functions, Adhesive Tapemobile phone accessories have also formed a huge industrial chain in recent years, among which the protective film of mobile phone is one of the typical ones. At present, there are many kinds of screen protective films of mobile phone in the market, but they generally rely on the transparent film materials attached to the screen by static electricity and adhesive. The disadvantages of this type of products are easy to fall off, blister, short service life, no scratch resistance, no earthquake resistance, difficult to paste, poor touch, etc. Now there is a new protective material - tempered glass screen protective film, which can solve many of the above problems.

The toughened glass protective film is easy to use. It only needs to be pasted on the mobile phone screen after aligning the position. Users do not have to paste it carefully like using the film. It has an automatic exhaust function, Adhesive Tape so there will be no ugly bubbles. The toughened glass protective film can prevent fragmentation, scratch and scratch, and its tenacity is enough to protect the mobile phone display from heavy pressure.

We know that the direct way to fix the tempered glass on the screen is to apply glue, but the direct application of glue on the tempered glass can not be rolled up, so it is difficult to achieve the purpose of mass production. In order to solve this problem, the current tempered glass protective film is composed of a piece of tempered glass and a piece of "ab double-sided tape".

product mix

How does toughened glass protective film have bonding ability? How to realize self discharging bubbles? This starts with the structural design of our ab double-sided tape.

AB double-sided tape, based on pet, with silica gel on one side and OCA toughened glass protection on the other. OCA has good adhesion, excellent optical performance and certain rough surface filling function, which is bonded to tempered glass; Silica gel has excellent self discharging bubble performance and fits on the surface of mobile phone screen.

Due to the different coating types and functions on both sides of the substrate, it is named "ab tape".

Factors affecting the performance of AB tape

The exhaust performance of AB tape directly affects the adhesion effect and adhesion efficiency of tempered glass. Bubbles or too slow exhaust rate are bad adhesion experience. What factors affect the exhaust performance of AB tape?

Silica gel material selection

The adsorption of different types of silica gel is different, which is the main factor determining the properties of AB adhesive.

Flatness of silica gel coating

Poor flatness and thickness uniformity are often one of the main reasons for bubbles.

Silica gel coating thickness

The thickness difference directly affects the exhaust rate of glass. The thicker the adhesive layer is, Adhesive Tapethe faster the exhaust rate is.

Substrate stiffness

The substrate with high stiffness has a benign effect on the coating flatness of the adhesive layer and an indirect effect on the exhaust property.

Advantages of AB tape

Ultra thin design. At present, there are two thicknesses of 120um and 130um on the market.

Excellent optical properties (all-optical transmittance > 90%, haze < 1%).

It has good adsorption and moisture absorption performance for glass and good operability. For iPhone 6 plus screen (5.5 inches), it can completely exhaust within 2s to achieve the effect of no bubble and no watermark.

No residual glue and no pollution after tearing.

Through self-made core materials and large-scale production to greatly reduce costs, so that customers can reap substantial benefits.

A new solution slt-2000s has been launched for color shell tempered glass.