CN1074650A

CN1074650A - A kind of simulative synthetic wood and manufacture method thereof that natural wood veins is arranged

Info

Publication number: CN1074650A
Application number: CN93100077A
Authority: CN
Inventors: 张鸿雁
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-05
Filing date: 1993-01-05
Publication date: 1993-07-28

Abstract

The invention provides a kind of manufacture method of appearing the simulative synthetic wood of natural wood veins in one's mind.Its technological process is: powder raw material mixes, and particle is made, and powder, pellet mix again, steps such as foaming.Use raw material to be CBA, auxiliary agent, polyvinyl chloride, pigment etc.Is formed by powder, pellet proportioning control wood grain, be equipped with low foaming that continue of extruder again, can form the simulative synthetic wood that natural wood veins is appeared on the surface in one's mind, and the wood grain layer is thicker, texture, sense of touch are true to nature.

Description

A kind of simulative synthetic wood and manufacture method thereof that natural wood veins is arranged

The present invention relates to a kind of with industrial chemicals synthetic imitated wood material and manufacture method thereof.

Because tellurian timber resources is fewer and feweri, people are developing various substitution material, and a kind of imitated wood material made from plastic material is arranged in the market, and it mainly is to attach the top layer that one deck has wooden lines on the surface of plastic material.Because this materials processing program is many.(body is made at material, and the wood grain face is made, and is bonding), and when the top layer is damaged, expose the plastic body of the inside, influence attractive in appearance.As improvement, the someone proposes a kind of with CELLCA method manufacturing simulative synthetic wood.Though this material has overcome the many shortcomings of adhesive material program, the wood grain texture on top layer is poor, and the wood grain top layer is thin, as the surface being processed or surface in using when damaged, and graining that still can damaging surface.On sense of touch, also make imitative wood effect poor greatly with the timber difference.

At above-mentioned shortcoming, the present invention proposes a kind of thicker wood grain surfaces that has, the manufacture method of sense of touch, simulative synthetic wood that texture is identical with timber.

The present invention is achieved in that earlier raw material mixed, and a powder part that mixes put into granulator again and made granularly, mixes with powder to send in the low foaming extruder again and continues to foam, and makes the surface appear wooden lines in one's mind, is compression molded into required product again.

Be described further below in conjunction with accompanying drawing:

Fig. 1 is a process chart.

Fig. 2 is the single-screw extrusion machine structural representation.

Fig. 3 extrudes the mould amplification assumption diagram for extruder.

According to technological process, at first to prepare the powdery mixed material, its mixed weight ratio is:

CBA (Azorisfomaide) 0.4%

Stabilizing agent: Ca-Zn is that metallic soap, lead are stearic acid 3-4%

Auxiliary agent: pressure gram resin

Polyvinyl chloride: (PVC, degree of polymerization 800-1000) 85.6-86.6%

Pigment

More than after several raw materials mix, the powder of 80-85% weight ratio is sent into granulator makes granularly, mix with the powder of remainder again, send in the low foaming extruder mix, foaming, the surface of shaped article promptly appears natural wood veins in one's mind.The mixed proportion of control powder and pellet can determine the wood grain of product surface to form.

In order to cooperate the better formation of product surface wood grain, low foaming extruder used in the present invention has been made particular design, and as shown in Figure 2, this extruder is made of barrel (1) and the extrusion mould (2) of being located at the barrel front end.Wherein in the stack shell of barrel (1) single screw rod (3) is arranged, along with single screw rod (3) diameter variation, barrel (1) inside is divided into feed zone (1-1) successively, and compressional zone (1-2) metering is than district's (1-3) three parts.Be provided with the many groups of heating plate (4) in barrel stack shell outside and outside extruding mould, be respectively A, B, C, D, E, heating-up temperature is controlled at 120 ℃, 150 ℃, 180 ℃, 165 ℃ and 160 ℃ of highest temperatures successively and is located at the barrel front end for 180 ℃, be that raw material is not only in barrel, and in extruding mould, all continued heating, cooperate the stirring of screw rod, powder and pellet are fully mixed continue low foaming, can form wood grain.Single screw rod qualification draw ratio (L/D) of extruder used herein is 24 in addition, and compression ratio (C/R) is 2.3, is stirred the density and the uniformity of mixing with suitable control raw material in barrel, thereby can forms the wood grain with suitable thickness.

Fig. 3 extrudes the mould structure enlarged drawing for the present invention.Mould (2) has a current limiting plate (6), and mould is arranged on apart from extruding mould outlet suitably local.Utilize current limiting plate can make raw material evenly extrude the extrusion mould.Because raw material is continued heating in barrel and extrusion mould, therefore still can continue foaming after raw material is extruded the extrusion mould, is admitted to mould at last, obtains needed product after water-cooled.

The synthetic imitative wood products of utilizing the inventive method to produce, it is very natural, true that the imitative wood grain that is appeared on its surface in one's mind, sense of touch and timber are identical, formed wooden lines top layer is extremely thick, when the surface is added man-hour, even the excision certain thickness still can present wooden decorative pattern, aesthetic appearance is at all unaffected.Along with the pigment difference of adding, the product of producing can be different colours, and makes imitative Chinese juniper wood, multiple wooden products such as beech, redwood.

Claims

1, a kind of manufacture method of simulative synthetic wood is characterized in that: mixed by raw material, particle is made, and powder, pellet mix, and the foaming extrusion modling is formed.

2, according to claim 1, it is characterized in that: the raw material components in the powdery mixed material is (all being weight percentage)

CBA: 0.4%

Stabilizing agent: 3-4%

Auxiliary agent: 10%

Polyvinyl chloride powder (PVC) 85.6-86.6%(degree of polymerization 800-1000)

Pigment is some

3, according to claim 1, it is characterized in that: powder was 15-20% when powder mixed with pellet, and pellet is the 85-80% percentage by weight.

4, according to claim 1, it is characterized in that: the draw ratio (L/D) of the low foaming extruder that extrusion modling is used is 24, and compression ratio (C/R) is 2.3.

5, according to claim 1, it is characterized in that: extruder is made of the extrusion die of barrel and barrel front end, and many group heating plates all are equipped with in its outside, and heating-up temperature is followed successively by 120 ℃ from barrel to mould, and 150 ℃, 180 ℃, 160 ℃, 165 ℃.