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CN-118563595-B - Process for producing dyed creping base paper by using fourdrinier vat machine

CN118563595BCN 118563595 BCN118563595 BCN 118563595BCN-118563595-B

Abstract

The invention belongs to the technical field of papermaking, and particularly relates to a process for producing dyed crepe base paper by a fourdrinier vat machine. The invention uses aluminum sulfate and rosin size acid sizing and food grade wet strength agent to keep better wet strength in the process that paper passes through dye, the dye water absorption meets the use requirement, the water entering a wrinkling drying cylinder and the water exiting the wrinkling drying cylinder are controlled in place through base paper, the repeated debugging of users is avoided, the generation of 'open folding' is avoided, the wrinkling texture is clear, the water-resistant layer formed by acid sizing at the drying part has the characteristic of rosin, and has a certain adhesive force, so that the color of the finished product is more bright and beautiful in viewing.

Inventors

  • SONG DIANFENG
  • JIANG KAIYAN
  • WANG SHUAI
  • XU RUYI

Assignees

  • 山东仁丰特种材料股份有限公司

Dates

Publication Date
20260512
Application Date
20240618

Claims (7)

  1. 1. A process for producing dyed creped base paper by a fourdrinier vat machine is characterized by comprising the following production process flows: Pulp board, chain plate conveying, pulp grinder, discharge tank, pulp grinder, pulp forming tank, pre-papermaking tank, pulp flushing pump, pressure screen, pulp flowing box, net part, press part, vat, coiling part, rewinding, packaging and warehousing; Filling materials are added into the pulper; 15-20 kg/ton of aluminum sulfate and 10-18 kg/ton of wet strength agent are added into a pipeline between the pulping pool and the pre-pulping pool; The cation dispersion rosin size 10-15 kg/ton paper is added into a pipeline between the pre-papermaking pond and the pulp pump; in the pulping process, the pulping process comprises the steps of beating 38-42 DEG SR and wet weight 2.0-3.0g; the filler is talcum powder, and the adding amount of the talcum powder is 50-80 kg/ton pulp.
  2. 2. The process for producing dyed creped base paper by a fourdrinier vat machine according to claim 1, wherein the pulp sheet is prepared by 20wt.% bleached kraft softwood pulp and 80wt.% bleached kraft hardwood pulp.
  3. 3. The process for producing dyed creped base paper by a fourdrinier vat machine according to claim 1, wherein the pulping process comprises pulping in series by three DD720 twin-disc mills, the first disc mill uses a cutting fin type abrasive disc, and the second and third disc mills use broom fin type abrasive discs.
  4. 4. The process for producing dyed creped base paper by a fourdrinier vat machine according to claim 1, wherein the cationic retention aid is added in the conduit between the pulp pump and the pressure screen in the range of 200-300 g/ton pulp.
  5. 5. The process for producing dyed creped base paper by fourdrinier vat machine according to claim 1, wherein said anionic retention aid is added in the range of 200-300 g/ton pulp in the conduit between the pressure screen and the headbox.
  6. 6. The process for producing dyed creped base paper by a fourdrinier vat machine according to claim 1, wherein 5-10 kg/ton of stiffness agent and 8-12 kg/ton of cationic starch are added to the pipe between the pulping vat and the pre-vat.
  7. 7. The process for producing dyed creped base paper by a fourdrinier vat machine according to claim 1, wherein the machine operating parameters are: (1) The speed of the vehicle is 450-550m/min; (2) The atmospheric pressure is 500-550kPa; the air temperature of the wet end of the large cylinder air cover is 220-280 ℃ and the air temperature of the dry end is 220-280 ℃; the dryness of the large cylinder is 94-96%.

Description

Process for producing dyed creping base paper by using fourdrinier vat machine Technical Field The invention belongs to the technical field of papermaking, and particularly relates to a process for producing dyed crepe base paper by a fourdrinier vat machine. Background Along with the increasing requirement of environmental protection worldwide, more and more raw materials required by the artware are gradually transformed into other types which are more environment-friendly. The paper material has the characteristic of being a renewable and recyclable material, and inevitably has a wide development space. The dyed crepe paper is produced with base paper and through soaking dyeing, stoving, creping, stoving and setting, and subsequent simple processing to produce relevant artistic article, such as paper flower, decorating paper web, etc. The product needs to have high dyeing color reproducibility, clear wrinkling texture, no 'bright folding' (bright folding: local wrinkling and wrinkling become bigger in the wrinkling process), and certain shaping and forming degree, thus the base paper needs to have strict control of water absorption degree and wet strength, and has better stiffness and glossiness. Most of dyed creping base papers in the market are produced by a fourdrinier multi-cylinder machine, and the dyed creping base papers have poor color rendition, low glossiness and unsatisfactory control of water absorption and wet strength, and can not well meet the existing market demands. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a process for producing dyed crepe base paper by a fourdrinier vat machine, which adopts the dyed crepe base paper produced by the fourdrinier vat machine to fully utilize the drying performance of the vat, meet the requirements of the base paper on stiffness and glossiness, and meet the requirements of customers on water absorption and wet strength by proper chemical control, thereby filling the market gap of the products and having wide development prospect. The invention relates to a process for producing dyed creping base paper by a fourdrinier vat machine, which comprises the following production process flows: Pulp board, chain plate conveying, pulp grinder, discharge tank, pulp grinder, pulp forming tank, pre-papermaking tank, pulp flushing pump, pressure screen, pulp flowing box, net part, press part, vat, coiling part, rewinding, packaging and warehousing; The process flow diagram is shown in figure 1. Filling materials are added into the pulper; 15-20 kg/ton of aluminum sulfate and 10-18 kg/ton of wet strength agent are added into a pipeline between the pulping pool and the pre-pulping pool; And 10-15kg of cation dispersion rosin size per ton of paper is added into a pipeline between the pre-papermaking pond and the pulp pump. In the pulp board process, the pulp board proportion is 20wt.% of bleached sulfate softwood pulp and 80wt.% of bleached sulfate hardwood pulp. In the pulping process, three DD720 double-disc mills are adopted for pulping in series, the first disc mill adopts a cutting fin type abrasive disc, the second disc mill and the third disc mill adopt broom fin type abrasive discs, the beating degree is 38-42 DEG SR, and the wet weight is 2.0-3.0g. And 200-300g of cationic retention aid per ton of pulp is added into a pipeline between the pulp flushing pump and the pressure screen. 200-300G of anionic retention aid per ton of pulp is added into a pipeline between the pressure screen and the head box. And 5-10 kg/ton of stiffness agent and 8-12 kg/ton of cationic starch are added into a pipeline between the pulping pool and the pre-pulping pool. The filler is talcum powder. The addition amount of talcum powder is 50-80 kg/ton pulp. The paper machine operation parameters are as follows: (1) The speed of the vehicle is 450-550m/min; (2) The atmospheric pressure is 500-550kPa; the air temperature of the wet end of the large cylinder air cover is 220-280 ℃ and the air temperature of the dry end is 220-280 ℃; the dryness of the large cylinder is 94-96%. Compared with the prior art, the invention has the following beneficial effects: 1. The invention confirms that the high-speed paper machine with the fourdrinier vat can produce qualified dyed creped base paper. 2. The filler of the invention uses a small amount of talcum powder, and compared with other fillers with similar price, the filler can not only improve the stiffness of paper, but also improve the color reduction degree after dyeing. 3. The aluminum sulfate and rosin size acid sizing and food-grade wet strength agent used in the invention keeps better wet strength in the process that paper passes through dye, the water absorption of the dye meets the use requirement, the water entering a wrinkling drying cylinder and the water exiting the wrinkling drying cylinder are controlled in place through base paper, the repeated debugging of a user is avoided, the gene