Production method of glassine body paper

A technology of glassine base paper and production method, which is applied in papermaking, textiles and papermaking, fiber raw material processing, etc., which can solve the problems of low transparency of glassine base paper, high transparency of glassine base paper, and lower internal strength, etc., and achieve low surface Oil absorption value, high tensile strength, high transparency effect

Inactive Publication Date: 2013-01-23
XIANHE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material of producing glassine base paper in the prior art generally adopts the mixed mode of softwood pulp and hardwood pulp, because the hardwood contains higher hemicellulose, therefore, the transparency of the glassine base paper produced by this method is low, not It meets the requirements of high transparency of glassine base paper, and the use of hardwood pulp directly reduces the internal strength of the paper, such as tensile strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: adopt 100% bleached kraft softwood pulp, after beating and refining, pulp degree is controlled at 45 ○ SR, and add 0.2% (weight) of sizing agent to mix, go through the headbox online copying, pressing, and pre-drying section, the moisture is controlled at 3%, add starch and use the film transfer sizing machine for surface sizing, sizing The amount is 1.5g / m 2 , into the post-drying section, the moisture is controlled at 5%, and is humidified by a humidifier with a spray humidification system. The spray volume is 7%, and the moisture reaches 12% after spraying; and then calendered by a super calender 3 calendering zones, each consisting of a soft roll and a hard roll, with a pressure of 300 kN / m 2 , roll surface temperature 300 ○ C; The proportions listed above are relative to the total amount of pulp;

Embodiment 2

[0023] Embodiment 2: adopt 100% bleached kraft softwood pulp, after beating and refining, pulp degree is controlled at 50 ○ SR, and add 0.4% (weight) of sizing agent for mixing. After going through the headbox online copying, pressing, and pre-drying section, the moisture is controlled at 6%, and polyvinyl alcohol is added to carry out surface sizing through a film transfer sizing machine. The amount of sizing is 0.5g / m 2 , into the post-drying section, the moisture is controlled at 8%, and it is wetted by a humidifier with a spray humidification system. The spray volume is 8%, and the moisture reaches 16% after spraying; and then calendered by a super calender 6 calendering zones, each consisting of a soft roll and a hard roll, with a pressure of 200 kN / m 2 , roll surface temperature 100 ○ C; The proportions listed above are relative to the total amount of pulp;

Embodiment 3

[0024] Embodiment 3: adopt 100% bleached kraft softwood pulp, after beating and refining, pulp degree is controlled at 40 ○ SR, and add 0.07% (weight) of sizing agent for mixing, after going through the headbox online copying, pressing, and pre-drying section, the water content is controlled at 4%, adding starch and passing the film transfer sizing machine for surface sizing, sizing The amount is 3g / m 2 , into the post-drying section, the moisture is controlled at 6%, and it is humidified through a humidifier with a spray humidification system. The spray volume is 8%, and the moisture reaches 14% after spraying; and then calendered by a super calender 5 calendering zones, each consisting of a soft roll and a hard roll, with a pressure of 400 kN / m 2 , roll surface temperature 250 ○ C; The proportions listed above are relative to the total amount of pulp;

[0025] After the above-described embodiment is completed, the slitting package is wound up at last.

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PUM

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Abstract

The invention discloses a production method of glassine body paper. The method comprises the following steps: A. blending the slurry after preparing, wherein the slurry consists of bleaching sulfate needle wooden pulp, and the concentration of the slurry is controlled in the range from 40 to 50 OSR; B. adding sizing agent; C. feeding the materials into a flow box for manufacturing paper with pulp; D. squeezing and dehydrating; E. feeding paper sheets into the front dry part; F. sizing on the surface; G. feeding the paper sheets entering into the rear dry part; H. moisting the paper sheets through a spraying and wetting system, wherein the spraying amount is 7-8% (based on weight), the water after spraying reaches 12-16% (based on weight); I. decorating the paper through super press polishing; and J. reeling, cutting and packaging. The body paper produced by the invention has the beneficial effects of ultrahigh transparency, ultrahigh tensile strength, better paper smoothness and lower surface oil absorption factor, wherein the transparency is greater than or equal to 40%, the vertical tensile strength is greater than or equal to 6kN / m<2>, the smoothness is greater than or equal to 1500s, the tightness is greater than or equal to 1.1g / m<3>, and the surface oil absorption factor is less than or equal to 1.0g / m<2>.

Description

technical field [0001] The invention relates to a method for producing glassine base paper. Background technique [0002] Glassine base paper is a kind of industrial paper. Glassine base paper is coated with silicone oil on the surface to make self-adhesive backing paper. Glassine base paper is mainly a common material for making barcode labels, self-adhesives, tapes or sticky industrial products, because after super calendering, the paper has a good compactness, especially suitable for die-cutting factories, and can be used for high-speed automatic labeling Special tapes, laser anti-counterfeiting labels, other release applications, etc. Therefore, glassine base paper has high quality requirements, and glassine base paper needs to have high transparency, good internal strength, good water and oil resistance and high single-side smoothness requirements. In the prior art, the raw materials for producing glassine base paper generally adopt the mixed mode of softwood pulp and...

Claims

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Application Information

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IPC IPC(8): D21H11/04D21H21/16D21H21/14
CPCD21H27/06D21H21/16D21H23/50D21H17/17D21H19/20D21H17/28
Inventor 史君齐谈详明单升来
Owner XIANHE CO LTD
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