Production method of regenerated ultralow-gram-weight high-strength corrugated base paper

A technology of corrugated base paper and production method, which is applied in the field of papermaking, can solve problems such as difficulties, increase processing load, hinder the process of low-quantity high-strength corrugated base paper, and achieve the effect of eliminating imported foreign garbage
CN111118956AInactive Publication Date: 2020-05-08中山联合鸿兴造纸有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
中山联合鸿兴造纸有限公司
Publication Date
2020-05-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a production method of regenerated ultralow-gram-weight high-strength corrugated base paper, which can ensure the physical strength of the base paper and reduce the impurity treatment load. The method comprises the steps of drum pulping, coarse screening, classifying screening, short fiber purifying treatment, long fiber purifying treatment, long fiber fine screening, shortfiber concentration, long fiber concentration, pulp preparation and paper machine papermaking. Domestic OCC waste paper raw materials are made into pulp through a drum pulping device, the pulp is screened by a pressure screen, the pulp subjected to the coarse screen is subjected to classification screening to divide fibers into long fibers and short fibers, short fiber good pulp and long fiber good pulp are proportionately mixed, the mixed pulp is sent to a papermaking forebay, the pulp is thickened, diluted, dispersed by a before-net, molded by a forming screen, dehydrated at the screen partto obtain wet paper sheets, the wet paper sheets are subjected to steam drying at a front drying part and then enter a film transfer surface sizing machine for surface sizing, and the paper sheets subjected to surface sizing enter a rear drying part for drying.
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Description

【Technical field】

[0001] The invention relates to the field of papermaking, in particular to a production method of recycled ultra-low grammage high-strength corrugated base paper. 【Background technique】

[0002] Due to the quality of waste paper raw materials, production equipment and technology, 70g / m 2 The production of the following quantitative corrugated medium paper is still relatively small. According to market supply and demand information, there is basically no 50g / m2 packaging paper and cardboard market 2 The following quantitative corrugated medium. At present, the low-gram weight products on the market mainly use domestic waste paper OCC and some imported waste paper American waste AOCC and European waste EOCC to increase the strength of the paper sheet. However, since domestic waste paper is mainly grass fiber, which contains many impurities, low fiber length, and low strength, how to ensure the strength of the fiber hinders the low-quantity process of high-...

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
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