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硬质塑料门窗是在五十年代中期发展起来的。早在1955年,西德诺彼尔公司就已开始生产PVC窗框异型材。1959年西德赫斯特公司进一步开发了硬质PVC窗框工业近几年来,欧洲各国PVC塑料门窗的产量增长了十几倍。国外塑料门窗异型材产量增长较快的原因主要有:1.可代钢代木;2.隔音-密封性能较好、导热系数低、节约能源;3.造型美观;4.价格已逐渐降低到与木窗相等或接近的水平。一、塑料窗的种类塑料窗分为全塑窗、硬质塑料包覆窗和组合窗三种塑料包覆窗的主体是金属或木材。窗架全部被塑料包覆。这种异型材的优点是:设计灵活、易于加工、表面无缝、造型美观轻巧。复合窗由硬质
Hard plastic doors and windows were developed in the mid-fifties. As early as 1955, Sidnobier had started to produce PVC window profile. In 1959, Sidhurst further developed the rigid PVC window frame industry. In recent years, the output of PVC plastic doors and windows in various European countries has increased by more than 10 times. The rapid growth of foreign plastic door and window profile production is mainly due to: 1. can replace the wood on behalf of the wood; 2. sound insulation - better sealing performance, low thermal conductivity, energy conservation; 3. beautiful shape; 4. prices have gradually reduced to The level equal to or close to the wooden window. First, the type of plastic window Plastic window is divided into plastic windows, hard plastic cover window and combination of three kinds of plastic window cladding body is metal or wood. The window frames are all covered with plastic. The advantages of this profile are: design flexibility, easy processing, seamless surface, beautiful and lightweight design. Composite window made of hard