Mixed pulp and paper with the same

A technology of mixing pulp and straw pulp, which is applied in the field of pulp and papermaking, can solve the problems of single paper, can not comprehensively improve paper performance, low opacity, etc., and achieve the effect of performance improvement

A technology of mixing pulp and straw pulp, which is applied in the field of pulp and papermaking, can solve the problems of single paper, can not comprehensively improve paper performance, low opacity, etc., and achieve the effect of performance improvement

CN101760983AActive Publication Date: 2010-06-30SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
6 Cites 7 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixed pulp and paper with the same
  • Mixed pulp and paper with the same
  • Mixed pulp and paper with the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0151] 1. Preparation of unbleached straw pulp

[0152] 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.

[0153] Table 1. Parameters of caustic soda pulping

[0154]

[0155] 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.

[0156] 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.

[0157] Table 2, pulping parameters of caustic soda-AQ method

[0158]

[0159] 3. In Examples 15-22, unbleached straw pulp was prepared by kraft method, wherein the pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
opacityaaaaaaaaaa
opacityaaaaaaaaaa
Login to View More

Abstract

The invention relates to mixed pulp and paper with the same. The high-performance straw pulp has the loose depth of 2 to 3 cm<3> / g, preferably 2.3 to 2.8 cm<3> / g, and more preferably 2.4 to 2.6 cm<3> / g. The opacity is from 88 percent to 100 percent, preferably 90 to 99 percent, and more preferably 94 to 98 percent. The air permeability is from 300 to 6500 ml / min, preferably 500 to 5500 ml / min, and more preferably 1000 to 5000 ml / min. The mixed pulp provided by the invention has high loose depth, high opacity and high air permeability, so the loose depth, the opacity and the air permeability of the paper with the mixed pulp are improved, the stiffness and the like of the paper is improved, and the papermaking speed is greatly improved because of the improvement of the opacity.

Description

technical field [0001] The invention belongs to pulping and papermaking technology, in particular to a mixed pulp and paper containing the mixed pulp. Background technique [0002] The bulk of the paper largely determines the opacity and stiffness of the paper. The opacity of paper is one of the optical properties of paper, and it is also an important quality index for printing paper, writing paper, bond paper and some industrial technical papers. It requires high opacity. For cultural printing paper, such as newsprint , Low opacity will lead to bleed-through and print-through phenomena, which will affect the use; higher opacity can prevent bleed-through. Stiffness is directly related to the performance of the paper in the operation of printers and copiers. The stiffer the paper, the easier it will be to pass through these photocopying equipment, and there will be fewer jams. For paper producers, if high bulk, stiffness and opacity can be achieved, it is possible to use l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
30 Jun 2010
Publication
CN101760983A
IPC
D21H11/00; D21C3/02
Inventors
李洪法; 宋明信