The pearl pigment has different color, different particle and different pearl effect. All the time, the white pearl pigment is used most in the production of the wall paper. But in resent year, the gold and two-color effect pearl pigments are very popular by people. The gold and two-color effect pearl pigments applications in wallpaper are more and more day by day.

1. When you choose the pearl pigment, firstly, you should know well that which pearl effect you expect your wall-paper to reach. Then you can choose appropriate specification of pearl pigment. In the manufacturing of wall-paper, the usual specification is as follows:

a. Bland satin effect: 100, 120, 118, 110, etc is our recommendation. The particle size of these specifications is smaller, and the pearl effect is blander.

b. Shimmer pearl effect: 153. Between 325-400 mesh. The pearl effect is more shimmer.

c. Golden series: 300, 303, 302, 323, etc, these specifications can provide an array of different golden effects.

d. Silver effect: You can choose white pearl pigment, then add a little blue and black ink to modulate the silver color. You also can choose silver gray pearl pigment. The usual specification is: 422, 424, etc.

2. Interference and double-colored effect: 205, 215, 219, 225, 235,etc is our recommendation. They can provide different double colored effect of gold, red, purple, blue and green.

The particle size of pearl pigment has a connection with the carving depth of printing mesh. If the carving depth is not enough, it is difficult for pearl pigment to transfer to paper base when you smear the pearl luster, and it will transfer the ink and let the pearl pigment remained in the mesh and ink container, in this way you can’t gain ideal pearl effect. You can choose appropriate pearl pigment according to the following form.

If the particle size of pigment become bigger,the twinkling can become strong.The ideal particle size range is 10-60um.Big particle size ,it can show twinkling effect and low hiding power;Small particle size can show soft effect and big hiding power.

4.Stableness

Generally pearl pigment can’t produce flocculater. There are two methods that can reduce the deposition when pigment is in painting system:

a.As stated in the previous paragraph,we can avoid pigment focusing according to good wetting and scattering.

b.Make the pigment suspend well on the carrier.

Only can use those organic thixotropic agent such as organic modification bentonite, polyethylene wax and others which can bring little destroy to pearl pigment.We don’t recomment using pyrolysis method silicic acid,because it is delusterant,although we use little it can reduce luster and color effect obviously.

Sometimes this kind of pigment with heavy weight and Lamellite sinking can’t avoid using  flocculant to form flocculanting phenomenon that can manage.That will change into relax,easily scatter deposit,it will be unstable in the outside force and can be easily mixed and return to equivalent coating mixings.

5.Hiding power

There are several methods in the recipe that can improve the hiding power:

A:Pearl powder with small particle size can improve the hiding power.However,the pearl effect is soft satin and twinkling effect is not obvious.If we want to get ideal pearl luster and hiding power,we can use pearl powder with small particle size instead of pearl powder that has big particle size.

B:We can improve the hiding power when we add metal powder in paint,such as: aluminium powder,copper powder,generally the amount is 5-10% of pearl pigment.

C:When we blend deep color,a small amount of carbon black can improve good hiding power.We can improve the reflection color of pearl luster when add black color.

D:When we blend light color,we can get good help if we use Tio2,however,the pearl effect will become weak ,so if we use Tio2,we should increase the amount of pearl pigment to strengthen the reflection color.However the amount of Tio2 should small and can just deal with hiding power.

Attention:Non-transparent pigment or dyestuff can reduce pearl luster effect.

Conclusion:

Pearl pigment is colorful,not only has soft satin luster,but also had twinkling light and metal luster.We can get ideal pearl effect according to the following three principles.

propriety amount pearl pigment can get many reflection/transmission layer,and can produce good pearl luster.

1.Try your best to make the pigment wafer parallel arrangement and reach the best mirror reflection

2.The lacquer finish should be transparent and can make the ray in and out freely.

3. lacquer material should be transparent, so that the light can