The invention relates to a method for producing e-commerce special craft paper with low
gram weight and high strength by using
domestic waste paper, and belongs to the technical field of
papermaking.The method comprises a pulping step and a
papermaking step. The
domestic waste paper is classified by using a classifying screen, and then long fibers are used for surface
layers and short fibers areused for bottom
layers. According to the invention, a small amount of fine wood
powder is added into bottom pulp, so that the stiffness of the craft paper is improved.
Starch and a carboxymethylcellulose (CMC) compounding
system are sprayed between the two
layers, so that the interlayer bonding force of the craft paper is improved. A dual-element reinforcing agent including
starch and
polyacrylamide is added in pulp, so that the product strength is improved. In addition, the inner-pulp
water resistance is combined with the
surface water resistance, and simultaneously an inner-pulp
flame retardance technology is combined with an interlayer
flame retardance technology, so that the
water resistance of craft paper products is improved, and simultaneously the
flame retardancy of the products isachieved. Therefore, the method provided by the invention saves energy and is
environmentally friendly, and the prepared craft paper products are low in weight, high in stiffness, excellent in waterproof performance and good in flame retardance, and are very suitable for e-commerce special paper boxes.