Preparation method of bio-based composite material sheet and plastic suction tray manufactured by sheet

Abstract

The invention discloses a preparation method of a bio-based composite material sheet and a plastic suction tray manufactured by the sheet, and belongs to the technical field of preparation of the bio-based composite material sheet and the plastic suction tray prepared by the sheet. The sheet disclosed by invention consists of three layers of resin with different components from inside to outside;sheet extrusion equipment consists of three extruding machines, control equipment, a sheet extrusion machine head and a temperature controlling system; and the phenomenon that the sheet product has strict thickness and is high in glossiness according to practical demands; the overall thickness of the sheet product can be adjusted in the range of 0.3mm to 2mm, wherein the thickness of an outer layer is 0.05mm to 0.5mm, occupying 5 percent to 15 percent of the total mass; the thickness of an inner layer is 0.05mm to 0.2mm, occupying 3 percent to 10 percent of the total mass; and the thickness ofa middle layer is 0.2mm to 2mm, occupying 70 percent to 90 percent of the total mass. The degradable sheet applied to the plastic suction tray provided by the invention has the advantages of being high in water resistance, high in moisture resistance, high in bacteria resistance and insect prevention property, reliable in strength, exquisite in appearance, and high in cleanness and environment protection properties, and has the ability to control degradation, and meanwhile, the sheet is low in cost, is convenient to process, and is suitable for mass industrial production.

Description

technical field [0001] The invention relates to a preparation method of a bio-based composite material sheet and a plastic-absorbing tray made of the sheet, belonging to the technical field of preparation of a bio-based composite material sheet and a plastic-absorbing tray thereof. Background technique [0002] At present, the common blister trays on the market, such as egg trays, fresh fruit trays and other packaging materials, are usually made of non-degradable general-purpose resins and foamed resins. The pallets made of the aforementioned two resins are expensive, have poor gas permeability, and are non-degradable. As a disposable packaging material, it will lead to waste of resources and environmental pollution. [0003] Although paper pallet packaging materials can be completely degraded, they are not resistant to humid environments and are easy to breed bacteria. A large amount of acid and alkali are used as processing aids in the production process, which consumes va...

AI Technical Summary

Problems solved by technology

The trays made of the aforementioned two resins are expensive, have poor air permeability and are non-degradable. As a one-time use packaging material, it will lead to waste of resources and environmental pollution.

[0003] Although paper pallet packaging materials can be completely degraded, they are not resistant to humid environments and are easy to breed bacteria. A large amount of acid and alkali are used as processing aids in the production process, which consumes valuable wood resources and produces a large amount of industrial sewage