A method for producing corrugated paper by thermally refining wood chips instead of OCC pulp

A production method and technology of corrugated paper, applied in the direction of mechanical/thermomechanical pulp, papermaking, papermaking machines, etc., can solve problems such as the shortage of OCC waste paper supply, and achieve the effect of reducing consumption and production costs
CN108978327BActive Publication Date: 2021-04-16LIANSHENG PAPER IND LONGHAI
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
LIANSHENG PAPER IND LONGHAI
Publication Date
2021-04-16
Patent Text Reader

Abstract

The invention relates to a production method for producing corrugated paper by thermally refining wood chips instead of OCC pulp, comprising the following steps: OCC pulp preparation, wood chip thermal refining pulp preparation, pulp blending, and flow of OCC pulp into OCC lengths according to the length of fibers In the fiber pulp tower, OCC fluff pulp tower, and OCC medium fiber pulp tower, the thermally refined wood chips flow into the wood chip thermally refined pulp tower; among them, the wood chip thermally refined pulp accounts for 10%-20% of the corrugated paper core layer pulp; . Different from the prior art, the present invention adds OCC pulp with different fiber lengths according to the different needs of corrugated paper surface layer, core layer and bottom layer; long fiber pulp, short fiber pulp, and wood chips are thermally refined and mixed according to a certain proportion. Made of corrugated paper core. Wood chip thermal refining is used as filler, no alkali and other chemical agents are used to remove part of the lignin, and no lye wastewater is produced. The problem of replacing OCC waste paper raw materials is effectively solved, the consumption of OCC waste paper is reduced, and the production cost is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of papermaking, in particular to a production method for producing corrugated paper by thermally refining wood chips instead of OCC pulp. Background technique

[0002] The current production of corrugated paper mostly uses recovered OCC waste paper raw materials (including imported and domestic waste paper), which are disintegrated by the OCC pulping line to remove various impurities, prepare qualified OCC pulp, and paper feeder mixes the pulp to make paper.

[0003] With the promulgation and implementation of the country's "Prohibition of Foreign Garbage Entry and Promotion of Solid Waste Import Management System Reform Implementation Plan" in July 2017, the import quota of imported OCC waste paper with some foreign waste is restricted, and the supply of OCC waste paper is tight. , objectively prompting enterprises to develop new processes and reduce the amount of OCC waste paper.

[0004] Authorized paten...

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
Login to View More