CCWB (Clay Coated White Back): grey core cardboard with white background; CCNB (Clay Coated News Back) "grey cardboard".
The latter, in the printing industry, is a kind of cardboard with gray coating made of recycled materials, which is generally used for the production and printing of boxes such as shoe boxes. With the coating, the printing effect is better.
18pt CCNB means 400g gray base white board with thickness of 0. 4572mm。 1pt=0。 0254mm。
20pt CCNB 450g, the thickness can be calculated by yourself.
Double powder refers to double copper, single powder refers to single copper, white card is also a kind of single copper, and white card refers to single copper of more than 250g.
Double powder and single powder are HK and foreign names. Generally, there are double copper in China, but more single copper.
190-450g must be single copper. Light on one side, thick on the other
Double copper paper (SBS), with a specification of about 157gsm-350gsm, is used for double-sided color printing, and the printing effect is very ideal.
Single coated paper, which can be a powder grey card (CCNB, single coated, one white and one grey), with specifications ranging from 210gsm to 450gsm, can be used for color printing on one side. The gray paper on the other side can also be used for color printing, but the printing effect is not good because the background color is gray. If double-sided color is required and it is used on heavy products, the effect can be achieved in the form of opposite mounting.
