JPS5657842A - Agricultural covering film - Google Patents

Agricultural covering film

Info

Publication number
JPS5657842A
JPS5657842A JP13442079A JP13442079A JPS5657842A JP S5657842 A JPS5657842 A JP S5657842A JP 13442079 A JP13442079 A JP 13442079A JP 13442079 A JP13442079 A JP 13442079A JP S5657842 A JPS5657842 A JP S5657842A
Authority
JP
Japan
Prior art keywords
vinyl acetate
ethylene
film
acetate copolymer
kept
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP13442079A
Other languages
Japanese (ja)
Other versions
JPS6243642B2 (en
Inventor
Teruo Iwanami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Nippon Synthetic Chemical Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Synthetic Chemical Industry Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP13442079A priority Critical patent/JPS5657842A/en
Publication of JPS5657842A publication Critical patent/JPS5657842A/en
Publication of JPS6243642B2 publication Critical patent/JPS6243642B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Landscapes

  • Greenhouses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: To obtain the titled inexpensive film, capable of being incinerated, having improved heat insulating property without adhesion of waterdrops, sagging due to moisture absorption and cracking due to shrinkage, by mixing ethylene-vinyl acetate copolymer with a specific saponified copolymer thereof, and forming a film from the mixture.
CONSTITUTION: (A) 98W50wt% ethylene-vinyl acetate copolymer containing 5W 40wt% vinyl acetate is mixed with (B) 2W50wt% a saponified ethylene-vinyl acetate copolymer, which contains 15W55mol% ethylene, and has a saponification degree ≥80mol% of the vinyl acetate component and a melt viscosity ratio of the copoly- mer kept at 230°C for 30min to that kept at 230°C for 10min ≥1.0. The resultant mixture is then formed into a film. Preferably, the amounts of the polymers (A) and (B) are 97W70wt% and 3W30wt%. A plasticizer, a stabilizer, etc. are mixed therewith if necessary.
COPYRIGHT: (C)1981,JPO&Japio
JP13442079A 1979-10-16 1979-10-16 Agricultural covering film Granted JPS5657842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13442079A JPS5657842A (en) 1979-10-16 1979-10-16 Agricultural covering film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13442079A JPS5657842A (en) 1979-10-16 1979-10-16 Agricultural covering film

Publications (2)

Publication Number Publication Date
JPS5657842A true JPS5657842A (en) 1981-05-20
JPS6243642B2 JPS6243642B2 (en) 1987-09-16

Family

ID=15127964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13442079A Granted JPS5657842A (en) 1979-10-16 1979-10-16 Agricultural covering film

Country Status (1)

Country Link
JP (1) JPS5657842A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688445A (en) * 1979-12-20 1981-07-17 Sekisui Chem Co Ltd Agricultural covering film
JPS60161447A (en) * 1984-02-01 1985-08-23 Nippon Synthetic Chem Ind Co Ltd:The Resin composition

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134763A (en) * 1973-04-26 1974-12-25
JPS5191988A (en) * 1975-02-10 1976-08-12 NETSUANTEISEIRYOKONAOREFUINNSAKUSANBINIRUKYOJUGOTAIKENKABUTSUNOSEIZOHOHO
JPS52954A (en) * 1975-06-24 1977-01-06 Kuraray Co Ltd Process for preparing a polyvinyl alcohol polymer composition having g ood heat stability
JPS54131649A (en) * 1978-04-03 1979-10-12 Mitsubishi Chem Ind Ltd Agricultural film
JPS55118941A (en) * 1979-03-08 1980-09-12 Sumitomo Chem Co Ltd Agricultural film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134763A (en) * 1973-04-26 1974-12-25
JPS5191988A (en) * 1975-02-10 1976-08-12 NETSUANTEISEIRYOKONAOREFUINNSAKUSANBINIRUKYOJUGOTAIKENKABUTSUNOSEIZOHOHO
JPS52954A (en) * 1975-06-24 1977-01-06 Kuraray Co Ltd Process for preparing a polyvinyl alcohol polymer composition having g ood heat stability
JPS54131649A (en) * 1978-04-03 1979-10-12 Mitsubishi Chem Ind Ltd Agricultural film
JPS55118941A (en) * 1979-03-08 1980-09-12 Sumitomo Chem Co Ltd Agricultural film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5688445A (en) * 1979-12-20 1981-07-17 Sekisui Chem Co Ltd Agricultural covering film
JPS60161447A (en) * 1984-02-01 1985-08-23 Nippon Synthetic Chem Ind Co Ltd:The Resin composition

Also Published As

Publication number Publication date
JPS6243642B2 (en) 1987-09-16

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