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塑料工业的发展已给建材行业带来了新起色,以塑料制品代替传统建材是建材产品更新换代的重要途径之一.在建材产品中,塑料门窗便是很有发展前途的产品.现可以分几点简述发展的可行性.1.木材紧张,急需以塑代木.从世界范围来看,我国木材较紧张,每年进口大量木材还不能完全满足计划用料.加之近年来为改善居民住宅,平均每年建造房屋1亿平方米,光制作门窗就需大量木材,这就提出了生产塑料门窗的重要性.下表是我国与世界平均木材资源对照简况:
The development of the plastics industry has brought new developments to the building materials industry. Replacing traditional building materials with plastics is one of the important ways to replace building materials. In building materials, plastic doors and windows are promising products. Several points briefly describe the feasibility of development. 1. Timber is in short supply, and it is urgently needed to replace it with plastic. From a worldwide perspective, China has relatively tight timber, and imports of large amounts of wood each year are not yet fully satisfactory for the planned materials. In addition, in recent years, residential buildings have been improved. On average, 100 million square meters of housing are built each year, and a large amount of wood is required to produce windows and doors. This raises the importance of producing plastic doors and windows. The following table shows the comparison of average timber resources between China and the world: