| Original document(4 pages) 中文版 |
This invention refers to a covering material for agricultural use which is 0.05 mm in thichness. It is the mixed polymer of polyalkene and low density polyethylene with the additives of antiager, functional auxiliary agent etc. The film is produced by extrusion moulding or blowing moulding which is convenient for prodn. and is characterized by excellent ageing resistence and heat-retention performance which is indicated by 0.3 deg.C higher as compared with the two stars grade "long life film" (0.18 mm thick) of CDF Co. France and CP117 anti-ageing film (0.18 mm thick) of spain. Furthermore, it can act as radiation shield for the near-ultraviolet (290-380 mm) of sunshine and protect the crops from disaster by bacteria. |
Application Number
申请号 |
85107610 |
Application Date
申请日 |
1985.10.17 |
| Title 名称 |
Multifunctional film material of thin type for agricultural use |
Publication Number
公开号 |
1010606 |
Publication Date
公开日 |
1987.04.22 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
A01G9/22,C08J3/22,C08K5/16,C08L23/00 |
Applicant(s) Name
申请人 |
Beijing Plastics Inst. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Han Xuanhu |
| Attorney & Agent 代理人 |
LIANG XUANHU JIA SHUPING |
| More information 更 多 信 息 |
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