農業用透明プラスチックフィルムの分光透過性
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- 稲田 勝美
- 農林省農業技術研究所
書誌事項
- タイトル別名
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- Transmission Characteristics of Clear Plastic Films for Crop Protection
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説明
The spectral transmission properties of various clear plastic films which were produced for crop protection were examined over the wavelengths from ultraviolet to infrared.<BR>In the plastic films used, the transmission varied drastically in the ultraviolet and infrared regions but not much in the visible one (Figs. 1 and 2.) . Some films were almost opaque in the wavelengths shorter than 350 nm. The transparency in the near ultraviolet region had no direct relation to the film materials such as polyvinyl chloride (PVC), polyethylene (PE) and ethylenevinyl acetate copolymer (EVA) (Fig. 1) .<BR>The infrared transmission, especially in the range of 7-15μ, varied widely with the material of films, i. e. PE films were highly transparent but PVC films were almost opaque, while EVA films were in the middle of PE and PVC films (Figs. 2-6) . There was no substantial difference in the infrared transmission properties among the films of the same material, regardless of the kind of brands (Figs. 2 and 3) .<BR>The transmission in the ultraviolet and visible regions of PVC and PE films was decreased remarkably by the practical use, but it was recovered partially by cleansing them. The infrared transmission was, however, almost no change even if the film was soiled or cleaned (Figs. 5 and 6) .
収録刊行物
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- 生物環境調節
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生物環境調節 8 (2), 111-118, 1971
日本生物環境工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680057201152
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- NII論文ID
- 130003725101
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- ISSN
- 21851018
- 05824087
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
