国产一级a毛看免费视频Av鲁丝一区鲁丝二区鲁丝三区,，制服日韩欧美国产不卡综合亚洲一区二区,，乱码一区AV春药高潮中文字幕无码

濟(jì)南護(hù)欄著色方法大略分為玄色型材擠出法、復(fù)合共擠法、覆膜法和表面咬涂法。

Ji'nan Ontario guardrail coloring method is divided into black extrusion method, CO extrusion method, coating method and coating surface bite.

(1)玄色型材擠出法，也稱通體法。在PVC異型材配方中參預(yù)色母料，經(jīng)由擠出機(jī)直接擠出玄色型材。長(zhǎng)處是在原擠出機(jī)上擠出成品，本錢低；不足是型材的耐候性差，難以滿足室表里裝璜成果的申請(qǐng)。

(1) black extrusion method, also known as the law. In the PVC profile formulation with black color masterbatch, profiles extrusion directly through the extruder. Advantage is in the original extrusion machine extrusion products, the cost is low; inadequate profiles of poor weather resistance, it is difficult to meet the application of room inside and outside decoration effects.

(2)復(fù)合共擠法。由濟(jì)南護(hù)欄 http://www.sdwoerde.com/ 和一層附加的玄色物料共同擠出構(gòu)成的型材。該玄色物料無(wú)論是PVC，還是聚甲基丙烯酸甲酯大要丙烯酸—苯乙烯—丙烯酸酯共聚物(ASA)，都須要兩個(gè)擠出機(jī)主機(jī)(錐雙蛹桿60或58和單螺桿30)來(lái)搞定。生制造型材必須應(yīng)用一種復(fù)合模具，生制造唱功是往日自兩個(gè)一致流道的型材物料和玄色物料，在離開模具前匯流到同一流遲中共同擠出成型。這種方法的賦性是：生制造過(guò)程中需另配冷熱混合機(jī)或干燥機(jī)等設(shè)備，物料回收難度大，生制造唱功繁冗，復(fù)合膜具本錢高、投資大。

(2) Co extrusion method. By the Ji'nan guardrail and an additional layer of black material consisting of CO extruded profiles. The black material whether it is PVC or PMMA gist of acrylic acid styrene - acrylate copolymer (ASA) need two extrusion machine (cone double pupa rod 60 or 58 and single screw 30) to get things done. Production profile must be applied to a composite mold, manufacturing singing is past since two uniform flow of materials and black material, before leaving the die bus to first-class late in CO extrusion molding. This method ascribed: students manufacturing process with hot and cold mixing machine or dryer equipment, material recovery difficult, production singing burdensome, the composite membrane with high cost, large investment.

(3)覆膜法。操作加熱和機(jī)械覆膜的方法，經(jīng)由壓合將一層玄色膜和粘接膠粘接在濟(jì)南護(hù)欄表面。賦性是：生制造過(guò)程需在流水線前途行，品質(zhì)較好的膜和粘接膠需選用進(jìn)口制造品，本錢較高；施工時(shí)玄色膜碰傷損不好將無(wú)法修補(bǔ)。

(3) plastic film method. Operation method of heating and mechanical coating, by pressing a layer of black film and adhesive surface barrier in Ji'nan. Ascribed: manufacturing process line line in future, the better the quality of the film and adhesive need imported manufactured goods, the cost is higher; construction bumps with black plastic film and the loss of bad will not be able to repair.

(4)表面噴涂法。將玄色涂料均勻地噴涂在濟(jì)南護(hù)欄的可視表面亡，可單面噴涂，也可雙面噴涂。賦性是色彩多樣，生制造施工靈活方便。

(4) surface spraying method. The black paint evenly sprayed on the visible surface of Ji'nan guardrail die, single-sided spraying, spraying can also double. Nature is the color variety, the production of flexible and convenient construction.