Mixed pulp with high bulk and paper having same

A technology of bulk and mixed pulp, which is applied in the field of pulp and papermaking, can solve problems such as high cost, dioxin, and complicated preparation methods, and achieve the effect of performance improvement

Active Publication Date: 2010-06-30
SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
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  • Claims
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Problems solved by technology

It can be seen that there is a dioxin problem in the above-mentioned method of increasing paper bulk by using high-yield pulp (HYP) with high bul...

Method used

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  • Mixed pulp with high bulk and paper having same
  • Mixed pulp with high bulk and paper having same
  • Mixed pulp with high bulk and paper having same

Examples

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preparation example Construction

[0127] 1. Preparation of unbleached straw pulp

[0128]1. Examples 1-7 are for the preparation of unbleached straw pulp by the caustic soda method, wherein the properties of the unbleached straw pulp are measured by conventional methods for the pulp obtained after cooking and washing.

[0129] Table 1. Parameters of caustic soda pulping

[0130]

[0131] The unit of bulk thickness in the table is cm 3 / g, air permeability unit ml / min, breaking length unit Km, folding endurance unit N.m / g, tear degree unit mN, tear index unit mN.m 2 / g. The table below is the same.

[0132] 2. In Examples 8-14, the caustic soda-AQ method was used to prepare unbleached straw pulp, wherein the properties of the unbleached straw pulp were measured by conventional methods on the pulp obtained after cooking and washing.

[0133] Table 2, pulping parameters of caustic soda-AQ method

[0134]

[0135] 3. In Examples 15-22, unbleached straw pulp was prepared by kraft method, wherein the prop...

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Abstract

The invention relates to mixed pulp with high bulk and paper or paper molded products having the same, which are characterized in that the mixed pulp comprises bulky straw pulp of which the bulk is 2-3cm<3>/g, preferably 2.3-2.8cm<3>/g, more preferably 2.4-2.6cm<3>/g. The bulky straw pulp or unbleached straw pulp provided by the invention has high bulk, so that the paper prepared by the bulky straw pulp or the unbleached straw pulp prepared by the method of the invention has high bulk and non-transparency; the increased bulk improves the stiffness of the paper or the paper molded products so as to avoid the phenomena, such as paper blocking and the like, and the improved non-transparency can prevent the print through of the paper.

Description

technical field [0001] The invention belongs to pulp and papermaking technology, in particular to a mixed pulp with high bulk and paper containing the mixed pulp. Background technique [0002] In recent years, both paper producers and users have paid more and more attention to the bulk of paper. The bulk of the paper largely determines the opacity and stiffness of the paper. Modern copiers and printers require paper with high stiffness or thickness to allow the paper to pass through these photocopying equipment smoothly. For paper producers, if high bulk, stiffness and opacity can be achieved, it is possible to use less fiber material to achieve the same paper quality indicators. The bulk of the pulp is directly related to the bulk of the prepared paper, the higher the bulk of the pulp, the higher the bulk of the prepared paper. [0003] In the paper production process, there are several possible ways to increase the bulk of the paper. Such as adding polymer to the slurr...

Claims

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Application Information

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IPC IPC(8): D21H11/00D21H11/12D21C3/00
Inventor 李洪法宋明信王建民毕衍金徐金香
Owner SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
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