塑料门窗是本世纪50年代末首先由西德开发而成的新型建筑组件,自60年代初开始使用第一批塑料门窗至今已有30多年的历史。由于它具有外形美观、尺寸稳定、抗老化、耐腐蚀、耐冲击、气密水密性能优良,阻燃自熄、保温节能、长期使用保养简单等优点,因而发展较快。 在国外,早在60年代末塑料门窗已得到较广泛的应用,尤其是发达国家发展更快,如近年德国塑料门窗的年使用量已近20万套,在门窗市场中要占一半以上,奥地利为48％,英、法、意等国家也有10—20％以上。人们预测在未来10年内,PVC塑料门窗市场在整个欧洲将保持每年7—8％的速率增长。美国是在70年代才开始起步,但目前年使用量增长率已在15％以上,如PVC门 Plastic doors and windows were the first new building components developed by West Germany in the late 1950s. Since the early 60s, the first batch of plastic doors and windows has been used for more than 30 years. Because it has the advantages of beautiful appearance, dimensional stability, anti-aging, corrosion resistance, impact resistance, airtight and watertight performance, flame-retardant self-extinguishing, thermal insulation and energy saving, long-term use and easy maintenance, etc., and therefore it develops quickly. In foreign countries, as early as the end of the 60’s, plastic doors and windows have been widely used, especially in developed countries, such as the use of nearly 200,000 sets of German plastic doors and windows in recent years, accounting for more than half of the doors and windows market in Austria. For 48%, Britain, France, Italy and other countries also have 10-20%. It is predicted that in the next 10 years, the PVC plastic door and window market will maintain an annual growth rate of 7-8% throughout Europe. The United States began its development in the 1970s, but its current annual growth rate of use has been above 15%, such as PVC doors.