Production method of aluminum-plastic wood fiber composite profile

Abstract

The invention relates to a production method of an aluminum-plastic wood fiber composite profile. The method comprises three steps. The first step is a material preparing step, wherein: (1) waste plastic or novel plastic is adopted as a main material; (2) plant fiber is adopted as an auxiliary material; (3) purchased mineral powder is adopted as a filling material; and (4) a chemical agent with a coupling effect is adopted as an additive. The second step is a mixing step, wherein 30-55% of the main material by weight, 38-55% of the auxiliary material by weight, 5-30% of the filling material by weight, and 2-6% of the additive by weight are placed in a mixer, and are processed into particles; and the particles are adopted as a raw material of an inner core, and are preserved for later use. The third step comprises a process that: a body of the profile is produced by using a co-extrusion equipment production line, wherein the prepared material used for producing the inner core of the profile body and a material of a protective film are placed in a hopper of an extruding machine, and the extrusion processing of the inner core and the protective layer is simultaneously achieved with a co-extrusion manner, such that the profile body is formed. The construction profile provided by the invention is advantaged in high quality, long service life, good durability, and wide application range.

Description

Technical field [0001] The invention relates to an environmentally-friendly aluminum-plastic composite profile, in particular to an aluminum-plastic wooden fiber composite profile produced by using waste raw materials. Background technique [0002] Traditional wooden doors and windows usually machine wood into various brackets, which consumes trees and forest resources and is not conducive to protecting the ecological environment. [0003] Thermoplastic door and window profiles, also known as plastic steel profiles, use a screw extruder to press the thermoplastic polyvinyl chloride (PVC) into an extrusion die. After cooling, a steel lining is added to the inside to strengthen the radial strength, but The process is complicated and the production cost is high. [0004] To this end, I proposed a method for making aluminum-plastic profiles using thermoplastic waste plastics in Chinese patent 200510116789.8 (Making method of green and environmentally friendly hollow composite aluminum f...

AI Technical Summary

Problems solved by technology

[0007] 1. There are no mineral fillers in the raw materials, and only rely on plant fiber and plastic to mix. Plant fiber can increase tensile force and flexibility, but it has high brittleness, low strength, poor weather resistance, is greatly affected by sunlight and moisture, and has low anti-aging performance. easy to break

[0008] 2. There are inappropriate raw materials in the material selection and ingredients. If polystyrene (PS) and low-density polyethylene (LDPE) are selected as raw materials, the strength of the product will be reduced, the service life will be shortened, and the aluminum-coated layer will be easy to open. Problems such as weak bonding

[0009] 3. The production process is cumbersome. The profile obtained after extruding with an extruder in step 3 is a blank, and then it needs to be clad with a rolling machine (step 6), and the hollow core profile that is machined and formed is sent to the cladding tube , after being partially hardened by the cooling tank, vacuum smooth coating is carried out. In order to use a rolling machine for coating, step 4: forging blank profiles and step 5: machining are performed first, and the specifications and sizes of the profiles are adjusted, so that Carry out step 6 to send the profile into the cladding tube. There are many equipments and the production process is complicated. Even if such a complicated process is not careful enough for the cladding material, the inner core (the profile blank obtained in step 3) and the outer core layer of metal foil layer will have a negative effect

[0010] For the inner core, since the plastic material used in step 3 is not the same as the plastic material used in step 6, the thermoplastic properties are not consistent, and adhesives cannot be used for bonding. Good bonding of inner core and cladding material

[0011] For the metal aluminum foil layer of the outer layer, because the plastic raw material selected in step 6 is not a single plastic raw material, nor a new material, but regenerated waste plastics (the plastics of various colors are all waste plastics, and new plastics are White or transparent) This will bring a problem. It is difficult to bond the aluminum foil to the waste plastic mixed with pigments with the existing adhesive. Since the coating material is not a single material, the surface of the material has poor tightness and roughness. Microporous, not easy to be firmly combined with the adhesive, easy to open glue, fall off, and generate air bubbles, which will affect the integrity and quality of the profile, and the sorting of raw materials in recycling (due to different thermal melting points in raw materials), resulting in recycling Improper, not conducive to environmental protection, and the product has poor weather resistance, is greatly affected by sunlight and moisture, has low anti-aging performance, and is easy to break

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