E - Fixed Constructions – 02 – B
Patent
E - Fixed Constructions
02
B
61/34
E02B 13/00 (2006.01) A01G 25/02 (2006.01)
Patent
CA 1095275
ABSTRACT OF THE DISCLOSURE In an irrigation hose which is produced by melt- sticking double thermoplastic resin film in a plane at longitudinal and parallel lines so as to form 2 to 3 passages, one of which is a supply passage and others are a constant pressure passage, the supply passage and constant pressure one being connected by communicating holes which are formed by a non-melt-stuck portion spaced in the melt-stuck line between the both passages, and the constant pressure passage having water-irrigating holes which are formed by a non-melt-stuck portion spaced in the outside melt stuck line thereof, an improvement which comprises making small melt-stuck portions in the vicinity of said communicating holes and/or water-irrigat- ing holes.
308984
Kojimoto Susumu
Mori Toshio
Ono Junji
Sato Takami
Suzuki Shigeharu
Fetherstonhaugh & Co.
Sumitomo Chemical Company Limited
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