塑料薄膜用于大棚栽培时常须连接,通常采用焊接的方法。聚氯乙烯膜焊接或热补的温度约为130℃,聚乙烯约为110C,因此可用100～200瓦的电烙铁或200C的电熨斗连接。具体方法是:准备一根宽3～4cm的平直木板条,上面钉一层铁窗钞。将准备连接的两块薄膜的边(要求无灰尘水滴)重叠在木板条上,拉紧拉平,上面铺一层牛皮纸或旧报纸,用已发热的电烙铁或电熨斗放在纸上,稍用力下压并 Plastic film used in greenhouse cultivation often must be connected, usually by welding methods. PVC film welding or hot fill temperature of about 130 ℃, polyethylene is about 110C, it can be 100 ~ 200 watts of iron or 200C iron connection. The specific method is: Prepare a wide 3 ~ 4cm flat wood planks, nailed a layer of iron window money. The sides of the two films to be joined (dust-free drops are required) are overlaid on the wooden slats, tightened and leveled with a layer of kraft paper or old newspaper, placed on paper with a heated electric iron or iron, slightly hardened Under pressure and