About carbonless paper progress

About Carbonless Paper dyeing production progress

      Carbonless Copy Paper is a kind of pressure-sensitive recording paper, and has the function of directly printing and rewriting to develop color. It is a paper for general use in office automation and industry information, such as continuous accounting or general business accounting. In order to distinguish the order in each stack of tickets, a large amount of colored paper is required for the printing of the tickets. Therefore, color paper processing is a trend in the development of carbonless copy paper production.

1 The choice of dyestuff We chose domestic printing paste as the coloring agent. This color paste is made of a variety of colored pigments plus dispersants and auxiliaries, and dispersed together with water. Its particle size is mostly less than 2 Micrometer, no active ion exists, it not only has good compatibility with carbonless copy paper coating, and bright color, acid and alkali resistant, does not add any color-breaking agent, and has good color fastness.

2 According to the different color requirements, the amount of dye added is generally 0.5% to 2.0% of the coating content. Two or more paint pastes can also be used to match the desired color.

3 Dye liquor preparation According to the process ratio, weighing into the ingredients bucket, dilute to the required concentration with warm water, stir evenly, pour into the disperser containing the coloring agent and capsule, and mix the coating with the colorant. Evenly, pump to a high-frequency sieve and place it in a reserve tank. Uneven coatings can stain the stained paper.

4 Dyeing method Our factory adopts the method of coating single-sided and double-sided dyeing of the base paper with good coloring effect. The dyeing sequence is: CB-bubble and slurry slurry-dilution-packaging-pressing-drying-drying-backing-drying-primary-paper CF-coating fluid color paste-color slurry-dilution