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Preparation method of recycled cardboard

A technology of recycled pulp and cardboard, which is applied in the field of papermaking, can solve the problems of limited use range, fire hazards and easy breakage of recycled cartons, and achieve flexibility and slight improvement, excellent degradability, good flexibility and strength. Effect

Inactive Publication Date: 2016-09-07
JURONG DINGSHENG CARTON PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because recycled paper has shorter fibers than virgin paper, it is easy to break, so its application range is limited. Because the cardboard material used in cartons is thicker, it does not need to be folded multiple times, which is a field where recycled paper is widely used.
[0003] However, recycled cartons that do not have flame-retardant properties have fire hazards in logistics and warehousing, so the use of flame-retardant packaging cardboard materials is one of the main measures to reduce fire risks

Method used

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Examples

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Embodiment Construction

[0018] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0019] A kind of preparation method of recycled cardboard, comprises the following steps:

[0020] S1. Mix the recycled pulp and plant fiber pulp that have undergone impurity removal and filtration treatment, and then prepare the pulp. Add alginate during the pulp preparation process, and then go through papermaking, vacuum press dehydration, low-temperature drying, and paper cutting to obtain recycled raw materials. Paper;

[0021] S2. Press and cut the recycled raw material paper into a corrugated core;

[0022] S3. Cut the recycled raw material paper into panel paper, glue the upper and lower sides of the corrugated paper core with the panel paper with adhesive, and the finished product is obtained.

[0023] The ratio of the recycled ...

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PUM

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Abstract

The invention discloses a preparation method of a recycled cardboard. The preparation method comprises mixing recycled paper pulp subjected to impurity removal and filtration and plant fiber paper pulp, carrying out blending, wherein in blending, an alginate is added into the pulp, carrying out paper making, vacuum squeezing dewatering, low temperature drying and paper cutting to obtain a recycled raw material paper, pressing the recycled raw material paper, cutting the recycled raw material paper to obtain a corrugated paper core, cutting the recycled raw material paper to obtain panel papers, and bonding the panel papers to the upper and lower surfaces of the corrugated paper core by glue. The recycled cardboard has good toughness, strength and fire resistance and is suitable as a carton packaging material.

Description

technical field [0001] The invention relates to a method for preparing recycled cardboard, belonging to the technical field of papermaking. Background technique [0002] Recycled paper is reprocessed from waste books, newspapers, cartons, etc. purchased from waste stations to make them into useful paper, so that waste is utilized and waste of resources is reduced. However, because recycled paper has shorter fibers than virgin paper, it is easy to break, which limits its application range. Because the cardboard material used in cartons is thicker and does not need to be folded multiple times, it is an area where recycled paper is widely used. [0003] However, recycled cartons that do not have flame-retardant properties have fire hazards in logistics and warehousing. Therefore, the use of flame-retardant packaging cardboard materials is one of the main measures to reduce fire risks. Contents of the invention [0004] The technical problem to be solved by the present invent...

Claims

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Application Information

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IPC IPC(8): D21H11/12D21C5/02D21H17/30B31F1/20B32B29/08B32B37/12
CPCB31F1/20B32B29/08B32B37/12B32B2307/3065D21C5/02D21H11/12D21H17/30Y02W30/64
Inventor 赵秉盛余红军
Owner JURONG DINGSHENG CARTON PACKING
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