Co-extrusion production method for deeply-embossed composite plastic-wood plate with mixed color

Abstract

The invention provides a co-extrusion production method for a deeply-embossed composite plastic-wood plate with a mixed color, and relates to the technical field of plastic-wood material production. The production method mainly comprises a pelleting process, a co-extrusion process and a deep-embossing process. Needed raw materials comprise 40-60% of bamboo / wood powder, 15-30% of PE, 4-10% of talcum powder, 10-15% of toner, 2-5% of a coupling agent and 3-5% of a maleic anhydride grafted mateiral. The extrusion process comprises mixing material particles obtained in the pelleting process with color masterbatch with stirring, then adding into an extruder for extruding to obtain plates, and controlling the pressure in a cylinder of the extruder to be 0.06 MPa by utilizing vacuum-pumping equipment connected with the cylinder. By utilizing the provided co-extrusion production method for the deeply-embossed composite plastic-wood plate with mixed color, the raw-material formula is reasonable, the product performances are good, the plastic-wood plate with mixed color is produced and possesses patterns with different colors, and the variety of products is improved; and after extrusion molding and hot embossing are continuously performed on the composite plastic-wood plate, cooling and once-more heating are not needed, the production process reaches the purpose of saving energy, and the embossing depth reaches 0.4-0.8 mm, so that the lines are not easy to rub down.

Description

Technical field: [0001] The invention relates to the technical field of plastic-wood material production, in particular to a co-extrusion production method of mixed-color and deep-embossed composite plastic-wood boards. Background technique: [0002] Plastic packaging waste has seriously polluted the environment, affected industrial and agricultural production, and endangered human health and the survival of animals and plants. The world's annual output of plastics has exceeded 200 million tons, and my country's plastic packaging materials have exceeded 10 million tons in 2007. After one-time use, most of these plastic packaging materials and containers have become solid waste. Plastic packaging waste is light in weight, large in size, large in quantity, difficult to degrade, and cannot be incinerated at will. Most of them are discarded beside railways, inland waters, and streets and alleys in cities and towns. Over time, they become shocking "white pollution" belts. Accord...

AI Technical Summary

Problems solved by technology

The performance of existing plastic wood products is still not ideal, and there are still some defects, such as the density and water absorption of wood plastic boards, etc. parameters still need to be further improved

Moreover, the types of existing plastic wood materials are relatively single, and most of them are products of a single color.