Title: Polyethylene sheets and films

Abstract: According to the invention there is provided a polymeric composition of matter substantially transparent to solar radiation and constituting an effective barrier to infra-red radiation, especially in the region of about 7.mu. to 15.mu., comprising polyethylene or a copolymer of mainly polyethylene, containing an effective quantity of a phosphate, having a preferred range of content of phosphate of from 1 to 20 percent by weight. There is also provided a tunnel-shaped or similar structure for the cultivation of agricultural crops comprising a cover of sheeting made of such polymer.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Allingham, Yael (Rehovot, IL, US)
Vofsi, David (Rehovot, IL, US)
Gassner, Saul A. (Rehovot, IL, US)

Application Number: 915433
Filing Date: 1978-06-14
Publication_date: 1979-12-18
Assignee: Yeda Research and Development Co. Ltd. (Rehovot, IL)
Primary Class(es): 524/117 523/135
Other Classes:
US Patent Ref:

3386948	Jun, 1968	Needham et al.	260/42.
3437626	Apr, 1969	Glabisch	260/29.
3607828	Sep, 1971	Husseg	260/42.

Other Refs: 479260

May, 1968	JP

Primary Examiner: Schulz, William E.
Assistant Examiner:
Attorney: Ladas, Parry, Von Gehr, Goldsmith & Deschamps