| 摘要 |
The present invention relates to a double-layered vinyl sheet used for manufacturing a vinyl house. The double-layered vinyl sheet comprises an upper vinyl sheet and a lower vinyl sheet, and includes fused parts. In the fused part, the upper vinyl sheet and the lower vinyl sheet are fused. The fused parts are formed in the direction perpendicular to the lengthwise direction, in other words, in the direction perpendicular to the horizontal direction of the green house when the green house is constructed. An interval of fused parts is shorter than the width of the double-layered vinyl sheet. A width of the interval is limited by the lower vinyl sheet. A top end portion of the upper vinyl sheet of the double vinyl sheet is exposed to the outside. The fused parts are covered to be arranged in the direction perpendicular to the lengthwise direction of the green house. Therefore, an air layer (an interspace) can be formed between each fused part and between the upper vinyl sheet and the lower vinyl sheet. According to the present invention, hot air or cold air can be injected and discharged through a narrow space between the upper vinyl sheet and the lower vinyl sheet, and thus the temperature inside the green house can be easily controlled. |
