Preparation method of flame-retardant regenerated paperboard

Abstract

The invention discloses a method for preparing flame-retardant recycled cardboard, which comprises the following steps: a method for manufacturing a recycled corrugated paper core: mixing regenerated pulp and plant fiber pulp that have undergone impurity removal and filtration treatment, and then blending, adding Alginate is used to produce recycled raw material paper, and the recycled raw material paper is pressed and cut into corrugated cores; the production method of flame-retardant panel paper: flame-retardant polylactic acid polymer, phosphated starch-polyurethane and calcium carbonate are used as raw materials to make flame-retardant Burn the raw material paper, cut the flame retardant raw material paper into panel paper; cardboard composite: glue the upper and lower sides of the corrugated paper core and the panel paper with adhesive, and the product is ready. The method for preparing flame-retardant recycled cardboard provided by the invention has good flexibility and strength, and excellent flame-retardant properties, and is suitable for use as carton packaging materials.

Description

technical field [0001] The invention relates to a method for preparing a flame-retardant recycled cardboard, belonging to the technical field of paper manufacturing. 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 without 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. Existing flame-retardant cartons are mostly made of non-flame-retardant mater...

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 without 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. Existing flame-retardant cartons are mostly made of non-flame-retardant materials. Coated with a layer of flame retardant, the flame retardant effect is not good