Industrial wiping paper and preparation method thereof
A wiping paper, an industrial technology, applied in the field of paper manufacturing, to achieve the effects of high physical strength, high tear index and folding endurance, and high dry and wet strength
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Embodiment 1
[0031] The unbleached straw pulp and unbleached bamboo pulp involved in the present invention are the pulps disclosed in the Chinese patent application with the application number CN201610179306.7 and the name "non-wood pulp" submitted by the applicant on March 25, 2016. The feature is that the collected wheat straw and bamboo raw materials are pretreated separately, and then sent to the primary separation device through the conveying equipment, steamed with 0.6MPa-3.0MPa steam for 1min-5min, after cooking, multi-stage cleaning is carried out, and then solid-liquid Separation to obtain hemicellulose liquid and solid matter; adding alkali solution to the solid matter, cooking at 90°C-130°C for 0.5h-1.5h, performing a second solid-liquid separation after cooking to obtain unbleached pulp (unbleached pulp) Straw pulp and unbleached bamboo pulp). The K value of the unbleached pulp is less than 5.5, the degree of knocking is 20-30°SR, the wet weight is 2-3.5g, the whiteness is less...
Embodiment 2
[0044] The difference between embodiment 2 and embodiment 1 is:
[0045] A kind of industrial wiping paper of the present invention, the slurry of described industrial wiping paper is made by unbleached straw pulp and unbleached bamboo pulp, wherein the quantitative of said wrapping paper is 18g / m 2 , the content of the papermaking wet strength agent is 1.0% of the said dry pulp, and the content of the auxiliary agent is 1.25% of the said dry pulp.
[0046] The brightness of the industrial wiping paper is 20% ISO, the tensile index is 47N·m / g, and the tear index is 18mN·m 2 / g, the burst index is 1.2KPa·m 2 / g, the folding endurance is 80 times.
[0047] Described slurry is made up of the following components of weight percent:
[0048] Unbleached grass pulp 30%,
[0049] Unbleached bamboo pulp 70%.
[0050] The preparation method of industrial wiping paper of the present invention, comprises the steps:
[0051] In step (2), the mixed pulp passes through a rotary screen ...
Embodiment 3
[0056] The difference between embodiment 3 and embodiment 1 is:
[0057] A kind of industrial wiping paper of the present invention, the slurry of described industrial wiping paper is made from unbleached straw pulp and unbleached bamboo pulp, and wherein the quantitative of said wrapping paper is 20g / m 2 , the content of the papermaking wet strength agent is 1.5% of the said dry pulp, and the content of the auxiliary agent is 1.1% of the said dry pulp.
[0058] The brightness of the industrial wiping paper is 50% ISO, the tensile index is 37N·m / g, and the tear index is 20mN·m 2 / g, the burst index is 2.0KPa·m 2 / g, the folding endurance is 100 times.
[0059] Described slurry is made up of the following components of weight percent:
[0060] Unbleached grass pulp 40%,
[0061] Unbleached bamboo pulp 60%.
[0062] The preparation method of industrial wiping paper of the present invention, comprises the steps:
[0063] In the step (1), the self-made unbleached grass pulp ...
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