Class C coated water transfer printing base paper papermaking process

Abstract

The invention discloses a class C coated water transfer printing base paper papermaking process. The class C coated water transfer printing base paper papermaking process comprises the steps of preparing a surface sizing solution, pulping, mixing, papermaking, performing surface sizing, coating, calendering, rewinding and packaging; mixed pulping is performed by using three raw materials, namely long and short fiber wood pulp and wood chip pulp; when pulp kneading is performed, a charge enhancer is added, a wet strength agent is added in the pulping process step, a starch curing agent is added into the surface sizing solution, and a water-resistant agent, a latex, a lubricating agent and a starch sizing agent are added in the coating process step, so that the surface performances of coated water transfer printing base paper are improved, the coated water transfer printing base paper can be used for replacing existing domestic low-grade base paper products, and the production process has the characteristics of low cost, good uniformity of the prepared paper, smooth surface, strong two-sided hygroscopicity, good dry and wet mechanical strength and the like.

Description

technical field [0001] The invention relates to a papermaking process, in particular to a papermaking process for base paper coated with water transfer printing bottom paper. Background technique [0002] Traditional printing technology, whether it is lithography or gravure printing, can only be used for flat printing, not three-dimensional printing. However, water transfer printing technology can be carried out on flat objects and three-dimensional curved objects, realizing the combination of flat printing and three-dimensional printing. Effect. Many products involve water transfer printing, such as mobile phone cases, footballs, helmets, ceramics, toys, cups, golf clubs and other uneven and difficult-to-print objects can use water transfer printing. [0003] At present, there are two types of base paper for water transfer printing base paper produced in China. One is pre-coated high-grade water transfer base paper base paper, which is used to produce high-grade water tran...

AI Technical Summary

Problems solved by technology

The other is uncoated low-grade water transfer backing paper base paper, which has poor surface properties and is used to produce low-grade water transfer backing paper

Low-grade base paper for water transfer printing is currently produced by Hangzhou Huabang, Jiangsu Dadong, and Henan Xinmi. The products are not coated, have poor surface properties, and poor quality stability. They are only suitable for the production of low-grade water transfer printing bottom paper. It is a low-grade water transfer printing base paper, and the market is shrinking

[0004] However, with the continuous expansion of the application field of water transfer printing base paper, the demand for base paper is also expanding, and with the improvement of people's consumption awareness, many domestic customers are not demanding First, they intend to improve the quality of their products. Many manufacturers have also tried high-grade water transfer paper base paper products. However, due to the constraints of their own production technology scale and equipment conditions, high-grade coated water transfer base paper cannot produce high-grade water transfer paper. Transfer base paper, on the contrary, caused the production cost to be too high. The customer made the base coat by himself. Affected by the performance of the equipment, the quality was unstable, the production cost was high, and the yield was too low. They urgently needed a price lower than that of high-end coating water transfer printing. Backing base paper, the quality is higher than uncoated water transfer base paper, the annual demand is about 15,000 tons, so C-level coated water transfer base paper has broad market prospects