High performance wallpaper base paper pulp and process for producing wallpaper base paper using the same

Abstract

The invention discloses a high-performance wallpaper base paper pulp and a process which uses the pulp to produce wallpaper base paper, the base paper pulp is formed by sizing agent and accessory, the sizing agent is formed by the combination of coniferous bleaching chemical wood pulp, latifoliate bleaching chemical wood pulp and coniferous bleaching chemical thermomechanical pulp; and the accessory is formed by the combination of intra-pulp starch, filling, intra-pulp sizing agent, surface sizing agent, wet strength agent and retention aid. By adopting the invention, bubble points generated by the wallpaper base paper in the PVC scratching and painting process can be greatly reduced, and the bonding strength between a PVC coating and the paper surface and the stability of the paper in wet deformation are improved, thus overcoming the shortcoming of the prior art, simultaneously, reducing the production cost and industrial pollution of the wallpaper base paper. The wallpaper base paper produced by the process has high dry and wet strength, good dimension stability, good loose depth, high opacity, and difficult yellowing. The used sizing agent is mainly high-yield APMP, forest resources are saved, pollution load is low, and the invention has better generalization significant to the current situation that the cost of domestic current paper making industry remains high, forest resources are lacked, and the pollution of paper making industry is severe.

Description

technical field [0001] The invention relates to a production formula and process of wallpaper base paper in the papermaking industry, in particular to a high-performance wallpaper base paper pulp and a process for producing wallpaper base paper using the pulp. Background technique [0002] Wallpaper belongs to decorative processed paper, which is mainly used for wall decoration in hotels, restaurants, shops, conference rooms and homes. It is made of resin and plastic as adhesive film-forming agent, and added with fillers, pigments and other auxiliary materials. It is made into thermoplastic coating, and then combined with base paper by air roller coating method, calendering compounding, calendering foaming and other methods, and then processed by art decoration such as embossing, printing or foaming. Wallpaper base paper is the base material of wallpaper, and its performance index directly affects the post-finishing process of wallpaper and the effect after laying. Its main...

AI Technical Summary

Problems solved by technology

However, at present, a large amount of base paper for domestic medium and high-end wallpaper is imported from Finland, Germany and other countries, and the import volume accounts for about 35% of the total domestic wallpaper base paper usage, which increases the production cost of domestic PVC wallpaper. The main problems in the quality of base paper are: bubble points and delamination are prone to occur when PVC is coated, the paper is easy to turn yellow, and the expansion rate of the paper is large; and in the production process, traditional wallpaper base paper products generally use 50% Mechanical pulp and some chemical wood pulp are used as raw materials. The chemical mechanical pulp is mixed with the treated chemical pulp after high-temperature elimination, washing, beating, adding sizing agent, reinforcing agent and filler, after being formed by the paper machine, and then surface sizing After soft calendering, it becomes the finished wallpaper base paper. The disadvantage of its production process is that the cost of the slurry is high, the industrial pollution is serious, and the quality of the paper is difficult to meet the user's requirements.