Multi-purpose Carbonless Copy Paper

Main components of carbonless copy paper

Carbon free carbon copy paper does not need the carbon coated paper, which can be copied without wax coated paper, because of the chemical coating. Multiple copies of the document can be copied by directly printing or writing with pen. The utility model is convenient and clean, and can also be made into perforated blank computer printing paper to realize efficient continuous printing and copying. Carbon free paper is divided into upper page paper, middle page paper and lower page paper.

On the upper and lower sides of the upper and middle pages, there is a certain drug, and on the upper side of the middle and lower pages, another chemical is coated. According to the order of the upper, middle and lower pages, when subjected to the impact force of the printing needle or the pressure of the pen tip, the two different drugs will meet and show wonderful marks, so as to achieve the purpose of copying. The upper paper is called CB paper, and its lower side is only coated with CB medicine and called CB surface; the lower paper is called CF paper, and only its upper side is coated with CF medicine and called CF surface; the middle page paper is called CFB paper, and its upper side is coated with CF and the lower side is coated with CB surface.

CB medicine is a kind of coating containing capsule, binder and additives. The particle size of the capsule is only 3-7 μM. the outer shell is made of resin and contains solvent oil and colorless dye. When the capsule is damaged by external force, the dye oil will flow out. If the CB surface is pasted on the CF surface at this time, the carbon free carbon copy paper will flow to the CF surface to make the CF medicine brilliant. CF medicine is a coating containing color developing agent, binder and auxiliary agent, and the color developing agent is mainly some resin and active clay.

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