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近几年塑料门窗的推广应用和行业发展很快。在供求形势的刺激下,一部分型材企业开始扩产,形成十几个万吨以上生产能力的型材企业。在行业规模扩大的同时,产品和技术水平也在迅速提高。如万吨以上型材厂大都配备了全自动混料设备和原料输送系统,引进了全部计算机控制的型材挤出线。但是,塑料门窗的发展过程中在生产、设计、施工甚至政府有关管理部门等各个方面也遇到了各种各样的问题,塑料门窗还需要有一个不断完善的过程。不同的建筑物对建筑门窗有不同的要求,现有的塑料门窗系列还不能完全满足需要。如在建筑节能和环境保护方面,塑料门窗有其独特的优势。但在高层建筑中,特别是商务大楼中的应用就不太理想。主要是现有的塑料门窗的抗风压强度和抗雨水渗漏能力较低。近几年大
In recent years the promotion of plastic windows and doors and the rapid development of the industry. Stimulated by the supply and demand situation, part of the profiles began to expand production enterprises, the formation of more than 10 million tons of production capacity of the profile business. While the scale of the industry is expanding, the level of products and technology is also rapidly increasing. For example, most of the over ten thousand tons profiles are equipped with fully automatic mixing equipment and raw material conveying system, and all the computer-controlled profile extrusion lines are introduced. However, the development of plastic doors and windows in the production, design, construction and even the government departments and other aspects also encountered a variety of problems, plastic doors and windows also need to have a continuous improvement process. Different buildings have different requirements on the building doors and windows, the existing plastic doors and windows series can not fully meet the needs. As in building energy efficiency and environmental protection, plastic doors and windows have their unique advantages. However, in high-rise buildings, especially in commercial buildings, the application is less than ideal. Mainly the existing plastic doors and windows of the anti-wind pressure strength and resistance to rainwater leakage lower. In recent years