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Base paper of sandpaper and production method thereof

A production method and technology for base paper, applied in the field of pulp and paper making, can solve problems such as affecting product quality and difficult to maintain consistent paper color, and achieve the effects of improving appearance, ensuring physical strength, and improving physical strength

Active Publication Date: 2011-08-17
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sandpaper base, abrasives, and binders are important raw materials in the production process of sandpaper. The base of sandpaper has an important impact on the quality of sandpaper. Due to the high quality requirements of base paper for sandpaper, unbleached sulfate needles are generally used for the production of base paper for sandpaper. Leaf wood pulp papermaking, due to the use of unbleached natural color paste, when the raw materials and cooking conditions fluctuate, it is difficult to maintain the same color of the paper. If the color of the sandpaper base paper is inconsistent, it will affect the quality of the final product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Masson pine with a weight of 70 parts and eucalyptus with a weight of 30 parts are prepared, and after being prepared, DDS displacement cooking is used, and closed washing and sieving are used to make kappa value 48 kraft natural color wood pulp, and the pulp is oxygen delignified. Hydrogen peroxide bleaching, oxygen delignification period time 90 minutes, pulp concentration 12%, temperature 90°C, oxygen pressure 1000Kpa, pH value 12, oxygen consumption per ton of air-dried pulp 30kg, sodium hydroxide consumption 35kg; pulp retention in the bleaching section The time is 90 minutes, the slurry concentration is 12%, the temperature is 60°C, the pH value is adjusted to 9 with sodium hydroxide, the amount of hydrogen peroxide per ton of air-dried pulp is 20kg, and the whiteness of the obtained micro-bleached pulp is 22% (ISO). After the slurry is adjusted to a concentration of 2.5%, the slurry is beaten to 32 0 SR, wet weight 10.5 g, after the slurry is diluted, the sand is...

Embodiment 2

[0015] Masson pine with a weight of 80 parts and eucalyptus with a weight of 20 parts are prepared, and DDS displacement cooking is adopted, and closed washing and sieving are used to make kappa value 38 kraft natural color wood pulp, and the pulp is oxygen delignified. Hydrogen peroxide bleaching, oxygen delignification period time 60 minutes, pulp concentration 8%, temperature 95 ℃, oxygen pressure 900Kpa, pH value 10, oxygen consumption per ton of air-dried pulp 20kg, sodium hydroxide consumption 20kg; bleaching process pulp The material residence time is 60 minutes, the slurry concentration is 8%, the temperature is 65°C, the pH value is adjusted to 8.5 with sodium hydroxide, and the amount of hydrogen peroxide per ton of air-dried pulp is 30kg. The whiteness of the slightly bleached pulp obtained is 28% (ISO) , adjust the slurry to a concentration of 4.5% and beat the slurry to 26 0 SR, wet weight 15 g, after the slurry is diluted, the sand is removed, the slurry is dilut...

Embodiment 3

[0018] Masson pine with a weight of 75 parts and eucalyptus with a weight of 25 parts are prepared, and the kappa number is 40 kappa. Hydrogen peroxide bleaching, oxygen delignification period time 75 minutes, pulp concentration 10%, temperature 93°C, oxygen pressure 950Kpa, pH value 11, oxygen consumption per ton of air-dried pulp 25kg, sodium hydroxide consumption 30kg; pulp retention in the bleaching section The time is 80 minutes, the slurry concentration is 11%, the temperature is 62°C, the pH value is adjusted to 8.7 with sodium hydroxide, the amount of hydrogen peroxide per ton of air-dried pulp is 25kg, and the whiteness of the obtained micro-bleached pulp is 25% (ISO). After the slurry is adjusted to a concentration of 4%, the slurry is beaten to 29 0 SR, wet weight 13 g, after the slurry is diluted, the sand is removed, the slurry is diluted to meet the concentration requirements of the feed, and the pH value of the feed is controlled by a pressure sieve to control t...

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Abstract

The invention relates to a piece of base paper of sandpaper and a production method thereof. The method comprises the following steps: a fibre raw material is cooked to form paper pulp; and the fibre raw material comprises 70-80% of masson pine and the rest of eucalyptus, and the cooking kappa number is 38-48; and the paper pulp is prepared through pulping, desanding, mixing, finely screening by a pressurized screen, forming by loading a net, pressing, drying, calendering, winding, re-winding and packing. The longitudinal tensile index of the paper is no less than 80Nm / g, the transversal tensile index of the paper is no less than 45Nm / g, the folding strength of the paper is no less than 1,000 times, the horizontal shrinkage rate of the paper is no more than 3.5%, the tightness degree of the paper is no less than 0.78g / cm3, the smoothness of the paper is no less than 15s, the sizing degree of the paper is no more than 30g / m2, the longitudinal tensile strength of the paper is no less than 8.0kN, the horizontal tensile strength of the paper is no less than 3.0kN, the color of the paper is brown, the whiteness of the paper is 19%-26%, and the hue is as follows: L value of 65-75, a value of 3.5-7.5 and b value of 21-27.

Description

technical field [0001] The invention relates to paper and a production method thereof, in particular to a sandpaper base paper and a production method thereof, belonging to the field of pulp and papermaking. Background technique [0002] Sandpaper is a product used to grind the surface of metal, wood, etc. to make it smooth and clean. According to different abrasive materials, there are emery paper, artificial emery paper, glass sandpaper, etc. Dry sandpaper is used for polishing wood, Bamboo surfaces, water-resistant sandpapers are used for sanding the surfaces of metallic or non-metallic workpieces in water or oil. Sandpaper base, abrasives, and binders are important raw materials in the production process of sandpaper. The base of sandpaper has an important impact on the quality of sandpaper. Due to the high quality requirements of base paper for sandpaper, unbleached sulfate needles are generally used for the production of base paper for sandpaper. For leaf wood pulp pa...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21C3/02D21C7/00D21C9/16D21H21/16D21H17/17
Inventor 李正国白晓东王福纪朱杰赵桂林刘玉石刘便初张素卫李勋何江林潘贞叶
Owner YUEYANG FOREST & PAPER CO LTD
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