CN202130066U

CN202130066U - Wood-plastic composite board

Info

Publication number: CN202130066U
Application number: CN201120063464U
Authority: CN
Inventors: 唐宏玮
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-11
Filing date: 2011-03-11
Publication date: 2012-02-01
Anticipated expiration: 2021-03-11

Abstract

The utility model discloses a wood-plastic composite board which comprises strip-shaped board cores, a surface layer and middle standing ribs, wherein the strip-shaped board cores are arranged side by side at intervals and made of recycled plastic mixed with wood fiber; the surface layer is coated on the surfaces of the strip-shaped board cores and made of new plastic mixed with wood fiber; and the middle standing ribs are filled into the gaps between the strip-shaped board cores and made of new plastic mixed with wood fiber. In the wood-plastic composite board provided by the utility model, the recycled plastic mixed with the wood fiber is adopted as the strip-shaped board cores, so that the manufacturing cost is reduced; meanwhile, the new plastic mixed with the wood fiber, which has favorable mechanical properties such as impact strength, tensile strength and the like, is adopted as the surface layer, so that favorable mechanical properties are ensured; and the gaps between the strip-shaped board cores are filled with the middle standing ribs made of the new plastic mixed with the wood fiber, and the strip-shaped board cores are completely packed and compacted, so that the integrity of the board is improved, the phenomenon of layering between the strip-shaped board cores and the surface layer is avoided, and the board is enabled to be durable.

Description

Wood-plastic composite panel

Technical field

The utility model relates to a kind of wood plastic composite, is specifically related to a kind of wood-plastic composite panel.

Background technology

Wood plastic composite; Be the one type of advanced composite material (ACM) that is surging forward in recent years both at home and abroad, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc., replace common resin adhesive; Be mixed into new wood materials with wood-fibreds such as surpassing wood powder more than the 35%-70%, rice husk, stalk; Through plastic processings such as extruding, mold pressing, injection mouldings, sheet material of producing or section bar are mainly used in industries such as building materials, furniture, logistics packaging again.

Existing wood-plastic composite panel generally adopts the manufacturing of mixed with resin Wood Fiber Composite, and manufacturing cost is higher relatively, in order to reduce cost; Some producers use and reclaim plastics mixing Wood Fiber Composite manufacturing Wood plastic boards; Though with low cost, mechanical property, relatively poor like impact strength, hot strength etc.Publication number is that the patent documentation of CN101168262A discloses a kind of double-layer plastic-wood composite material and preparation method thereof; It comprises internal layer core body and skin; The internal layer core body is that coarse flour or agricultural stalk powder and waste or used plastics are composited; Skin is composited by pure wood powder and new product plastics, and outer layer thickness is more than or equal to 3mm; Each item mechanical property of this double-layer plastic-wood composite material is mainly provided by skin; Internal layer mainly plays filling effect, reduce cost, but the globality of this double-layer plastic-wood composite material is poor; Lamination appears between two-layer easily; In use mechanical property reduces, buckling deformation, even exfoliated and can not using.

Summary of the invention

In view of this, the utility model provides a kind of wood-plastic composite panel, when reducing manufacturing cost, improves the globality of sheet material, guarantees the good mechanical performance.

The wood-plastic composite panel of the utility model, comprise be arranged side by side and the space by reclaiming strip plate core that wooden plastic compound processes, be coated on the top layer of processing by new product wood plastic compound of strip plate wicking surface and fill the middle stud of processing by new product wood plastic compound in gap between the strip plate core.In the utility model, the wooden plastic compound of said recovery is meant and reclaims plastics mixing wood-fibred that said new product wood plastic compound is meant new product plastics mixing wood-fibred.

Further, be mixed with inorganic filler in the said strip plate core;

Further, said strip plate core accounts for 2/3 ~ 4/5 of sheet material cumulative volume;

Further, said new product plastics are selected from one or both mixing in polyethylene, polypropylene or the polyvinyl chloride.

The beneficial effect of the utility model is: the wood-plastic composite panel of the utility model has used and has reclaimed wooden plastic compound as strip plate core; Reduced manufacturing cost, simultaneously, the new product of good mechanical performance such as impact strength, hot strength wood plastic compound is as the top layer; Guaranteed the good mechanical performance; Gap between the strip plate core also is filled with the middle stud of being processed by new product wood plastic compound, and strip plate core is contained compacting fully, has improved the globality of sheet material; Lamination can not occur between strip plate core and the top layer, make sheet material durable in use.

Description of drawings

For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:

Fig. 1 is the sketch map of the wood-plastic composite panel of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1.

The specific embodiment

Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.

Fig. 1 is the sketch map of the wood-plastic composite panel of the utility model, and Fig. 2 is the A-A cutaway view of Fig. 1; As shown in the figure; The wood-plastic composite panel of the utility model, comprise be arranged side by side and the space by reclaiming strip plate core 1 that wooden plastic compound processes, be coated on the top layer 2 of processing by new product wood plastic compound on strip plate core 1 surface and fill the middle stud of processing by new product wood plastic compound 3 in gap between the strip plate core 1.

In order to strengthen hardness, can also mix inorganic filler in the said strip plate core 1.

In the present embodiment, said strip plate core 1 accounts for 2/3 ~ 4/5 of sheet material cumulative volume, and concrete ratio can be regulated according to use needs and cost requirement.

In the present embodiment, said new product plastics are selected from one or both mixing in polyethylene, polypropylene or the polyvinyl chloride; Certainly, said new product plastics are not limited to above-mentioned kind, can also be other thermoplastic.

During manufacturing; Adopt multi-layer co-extruded technology, two kinds of different formulations raw materials (reclaiming wooden plastic compound, new product wood plastic compound) are mixed in two mixers respectively; Plastifying fusion in two extruders respectively again then, the melt material of extruding is clamp-oned from two inlets of same mould respectively; Reclaim wooden plastic compound when die for molding strip plate core 1; By the plasticizing melt material that another extruder is extruded, be coated on strip plate core 1 surface and fill the gap between the strip plate core 1, form top layer 2 and middle stud 3; Move with the strip plate core that moves forward simultaneously; Because have the melt material of big flow to receive the effect of mould internal pressure, the melt material contains compacting to strip plate core fully before not exporting mould, and common extrusion neck ring mold makes real coreboard through cooling and shaping.The mechanical property of sheet material is mainly provided by top layer 2, and 1 filling effect of strip plate core because it has used the recovery plastics, has therefore reduced manufacturing cost, and middle stud 3 has improved the globality of sheet material, makes between strip plate core 1 and the top layer 2 lamination can not occur.

Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although the preferred embodiment through with reference to the utility model is described the utility model; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and the scope of the utility model that does not depart from appended claims and limited.

Claims

1. wood-plastic composite panel is characterized in that: comprise be arranged side by side and the space by top layer (2) of processing by new product wood plastic compound of reclaiming strip plate core (1) that wooden plastic compound processes, being coated on strip plate core (1) surface and the middle stud of processing by the wooden plastic compound of new product (3) of filling gap between the strip plate core (1).

2. wood-plastic composite panel according to claim 1 is characterized in that: said strip plate core (1) accounts for 2/3 ~ 4/5 of sheet material cumulative volume.