Reflective Tape How To Ensure Good Bonding
Reflective tape after fitting, there is warping, what causes it? Reflective Tape How To Ensure Good Bonding?
We first understand the bonding principle of glue, bonding has two forces, adhesion and cohesion.
Adhesion, force between dissimilar surfaces
Cohesion, internal strength of material
These two forces are the stickiness and shear of the material.
The viscosity is also related to the contact area of the adhesive material; for example, the fluidity of the water is very strong and can be easily contacted with the material to be adhered. When the two pieces of glass are bonded together by water, Glass is not easy, but its cohesion is not enough, by the shear when it is easy to separate.
Liquidity of the glue, its cohesion will be relatively poor.
Pressure-sensitive adhesive fluid is not strong, just posted to the surface of the material was sticky, will not immediately contact, the viscosity of a certain time to achieve the best.
Final stickiness residence time: 72 hours / 23 ° C
How to ensure that the glue and sticky material to get the maximum contact area?
- Time glue needs time to flow
- Temperature – High temperature can reduce the stickiness of the glue and promote the fluidity of the glue
- Pressure – to promote the mobility of plastic, to avoid the bubble generation
The bonding temperature is not as high as possible, because the reflective tape material surface and plastic thermal expansion and contraction coefficient is different, the temperature is too high will lead to the adhesive tape and the formation of shear stress is not conducive to bonding.
Therefore, the fit should pay attention to the following points:
- Paste the location of the radiation reflective logo clean, no dust, no grease, no rust, no Alice lacquer layer, the job site to keep clean;
- Humidity greater than 50% or rainy weather should not be pasted;
- Wash with non-corrosive solvents, rinse with water and wipe clean water with a clean soft cloth;
- Tear off the back sheet, gradually evenly attached to the specified location, and flattened with a device to ensure that no bubbles remain;
- fit within 1 day recommended not to exposure, three days should not be car wash.
Characteristics of different components of pressure sensitive adhesive
Consider the cost and practicality, most of the current reflective material selection of acrylic (non-sticky) pressure-sensitive adhesive.
WEALLIGHT is engaged in research and development of reflective materials for many years the factory, a professional development and production team, to provide you with professional advice to buy.
WEALLIGHT produces a variety of reflective materials, including: Reflective film, Reflective Tape For Clothing, DOT C2 Reflective tape, Reflective Heat Transfer Vinyl, etc., can be customized, can also accept custom!
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