When heavy rain is forecast, a temporary cover of perforated polythene will help.
From the telegraph.co.uk
In the presence of a catalyst, these molecules join together to form polythene.
From the newscientist.com
They pollute the recycling stream, lowering the quality of recycled polythene.
From the independent.co.uk
Theres somethign strange about the values for the melting point of this polythene.
From the newscientist.com
Seedlings can be kept warm in a coldframe, above, or under a polythene cloche.
From the nzherald.co.nz
The catalyst allows polythene to be made more cheaply and cleanly than ever before.
From the newscientist.com
The pouch is made of a roughish green, translucent, polythene-like material.
From the newscientist.com
Drape lightweight clear polythene over the hoops and tie at each end of your tunnel.
From the nzherald.co.nz
These polythene igloos were inflated by strong 12 inch electric fan heaters.
From the en.wikipedia.org
More examples
Polyethylene: a lightweight thermoplastic; used especially in packaging and insulation
Polyethylene or polythene (IUPAC name polyethene or poly(methylene)) is the most widely used plastic, with an annual production of approximately 80 million metric tons. Its primary use is within packaging (notably the plastic shopping bag).
Polythene was the first full-length album by the Welsh rock band Feeder and was released 18 May 1997 on the Echo Label, and then re-issued on 28 October in the same year in an Enhanced CD version, featuring their UK top 40 breakthrough single "High" and its video. ...