High-performance all-in-one machine thermosensitive printing paper base paper, production process and thermosensitive printing paper prepared from high-performance all-in-one machine thermosensitive printing paper base paper

Abstract

The invention relates to the technical field of special paper production, in particular to high-performance all-in-one machine heat-sensitive offset paper base paper, a production process and prepared heat-sensitive offset paper. The all-in-one machine heat-sensitive offset paper body paper is prepared by forming, squeezing and drying fiber pulp, and the fiber pulp is prepared from the following fiber raw materials in parts by mass: 15-40 parts of bleached bamboo pulp, 0-25 parts of bleached softwood pulp, 3.0-7.0 parts of water-soluble vinylon short fibers and 50-70 parts of polyester short fibers; the fineness of the water-soluble vinylon short fibers is 1.0 to 3.0 dtex, and the length of the water-soluble vinylon short fibers is 2 to 10 mm The fineness of the polyester staple fibers is 0.2-1.0 dtex, and the length of the polyester staple fibers is 2-10 mm. The body paper of the thermosensitive printing paper is high in longitudinal and transverse tensile strength and wet tensile strength, so that the printing resistance of the printing paper is improved; the stiffness of the paper is good, the uniformity of full-width quantification of the paper is good, and the composite production of the raw paper and the film is facilitated, so that the production speed is increased, and the ink penetration performance is better.

Description

technical field [0001] The invention relates to the technical field of special paper production, in particular to a high-performance all-in-one heat-sensitive plate paper base paper, a production process and a prepared heat-sensitive plate paper. Background technique [0002] For a long time, government departments, schools and training institutions often need to print documents such as official documents, test papers and training materials with the same content from hundreds to thousands at a time. This printing method has the characteristics of low cost and flexible operation, but it has been completely replaced by a digital all-in-one machine in the past ten years. Using this digital all-in-one machine to print documents retains the characteristics of low cost, flexible operation, etc., and also has the advantages of high printing quality, more environmental protection, and more convenient operation. The working principle of this digital all-in-one machine: the first ste...

AI Technical Summary

Problems solved by technology

[0005] The deficiencies of the above process are: 1) the raw materials LPET / PET low-melting point two-component polyester ultra-short fiber, PET polyester ultra-short fiber, viscose fiber , North wood pulp, mixed and beaten according to a certain proportion; among them, the specification of LPET / PET low-melting point two-component polyester ultra-short fiber selected by them is: 1.5-2dtex*6mm, and the width of this specification fiber is about 16-21μm. The weight percentage is 10-20%; the viscose fiber specification is: 1.0-1.7dtex*3-6mm, the fiber of this specification has a width of about 10-18μm, and the weight percentage is 15-25%; the northern wood pulp fiber width is about It is about 30μm, and the weight percentage is 25-35%; the specification of PET polyester ultra-short fiber is: 0.3-0.7dtex*3-6mm, and the weight percentage is: 30-40%

That is to say, the proportion of fibers with fiber width ≥ 25 μm is 25-35%, the weight percentage of fiber width ≥ 10 μm and ≤ 20 μm is 15-25%, and the weight percentage of fiber width ≤ 9 μm is 30-40%. Replace wood pulp with sisal pulp. The fiber width of sisal pulp is about 19 μm, that is, the weight ratio of ≥10 μm in the fiber ratio is 60-70%. Obviously, in this ratio, fibers ≤9 μm, or even ≤20 μm If the proportion is too low, it is not conducive to the ink penetration performance of printing

2) The use of 10-20% LPET / PET low-melting point two-component polyester ultra-short fiber in the ratio is to improve the tensile strength and wet tensile strength of the paper. This fiber is a hot-melt fiber, and the drying temperature needs to reach 120-130 ℃, the cortex of the skin-core structure can be hot-melted. This hot-melt bonding is mainly reflected in the lapping point of the skin between 10-20% LPET / PET low-melting bicomponent polyester ultra-short fibers. Fusion, this kind of fiber cortex has poor bonding effect with other fibers in the hot melt state, so it is difficult to improve the tensile strength and wet tensile strength of the base paper

[0007] Now the market reports that the all-in-one heat-sensitive base paper produced by this patented technology mainly has the following problems: 1) The base paper made of this base paper is durable The printing performance is poor, and the master paper that is replaced at one time can only be printed repeatedly about 3,500 copies. This is mainly due to the low tensile strength and wet tensile strength of the thermal master paper base paper of the all-in-one machine; 2) This base paper When they are combined with film on their production line, the production speed is low, only 50-60m / min, which is mainly due to the insufficient stiffness and softness of the base paper for this kind of all-in-one heat-sensitive version paper, and the insufficient uniformity of the paper’s entire width. 3) The ink permeability of base paper still needs to be improved

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