Method for Producing a Lignocellulose Plastic Composite Material

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This patent describes a novel method for producing lignocellulose-plastic composite materials. The core invention involves feeding thermoplastic particles and a water-lignocellulose mixture into a refiner, where the lignocellulose particles are ground into fibers and the thermoplastic is simultaneously melted. The melted thermoplastic fuses with the lignocellulose fibers to directly form composite material particles within the refiner. This approach enables a simplified, more efficient, and cost-effective process compared to traditional techniques, overcoming several conventional challenges such as fiber drying, dosing, and agglomeration.

Use CasesContent extracted from patent full text and abstract with AI.

• Production of wood-plastic composites (WPC) for building and construction materials, such as decking, wall panels, and outdoor furniture.
• Manufacturing of natural fiber-reinforced composite parts for automotive interiors and exteriors.
• Creation of eco-friendly consumer products and packaging made from bio-based composite materials.
• Development of lightweight, durable materials for industrial uses, including pallets and containers.
• Replacement of conventional plastic or wood components with sustainable composites in various manufacturing sectors.

BenefitsContent extracted from patent full text and abstract with AI.

• Simplifies and streamlines the composite manufacturing process by combining fiberization and plastic melting in a single step.
• Reduces overall production costs and energy consumption by eliminating repeated drying and separate compounding stages.
• Prevents fiber shortening and agglomerate formation, preserving and enhancing mechanical properties of the final material.
• Allows for better mixing and bonding between lignocellulose fibers and thermoplastics, yielding improved composite strength and performance.
• Supports the use of renewable, sustainable resources as fillers, making the composite materials more environmentally friendly.
• Enables higher production throughput and scalability for industrial applications.

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Patent Abstract

The invention relates to a method for producing a lignocellulose plastic composite material. The problem addressed by the invention is that of providing an improved, with respect to the prior art, in particular simpler and more cost-effective option for producing lignocellulose plastic composite materials. In order to solve the problem, the invention provides a method for producing a lignocellulose plastic composite material, wherein a. thermoplastic particles and a mixture of water and lignocellulose-containing particles and thermoplastic particles are supplied to a refiner, and b. the lignocellulose-containing particles are reduced to fibres in the refiner, and wherein the thermoplastic particles are supplied to the refiner in a melted or fused state, or are melted or fused in the refiner, so that the melted or fused thermoplastic particles and the lignocellulose-containing particles that are reduced to fibres form material composite particles in the refiner.