| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-weight covering sheet for agricultural use, having wind prevention, waterproofing property and excellent workability owing to its flexibility, and excellent in warmth retaining property to keep the inside of a tunnel at higher temperature particularly at night in winter. SOLUTION: The agricultural covering sheet comprises laminated sheets of a hydroentangled nonwoven fabric and a film, and has basis weight of 45-145 g/m<SP>2</SP>and a heat retention rate of≥15%. COPYRIGHT: (C)2008,JPO&INPIT
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