Patent attributes
The present invention provides a pressure-compensation drip tape, which is used in drip irrigation to continuously and evenly supply a small amount of water to plants. The drip tape of the present invention includes an outer shell 10, and overlapping sheets 21, 23 and 25, which are expandable depending on an increase of water pressure. Furthermore, the drip tape has a main passage 11, which is defined by the outer shell and the innermost overlapping sheet, such that most water supplied from a water source flows through the main passage, pressure-reducing passages 31 and 33, which are defined between the overlapping sheets, and discharge holes 21H, 23H and 25H, which are formed in the border between the main passage and one of the pressure-reducing passages and the border between the pressure-reducing passages, such that the water sequentially flows via the main passage and the pressure-reducing passages and drips outside the drip tape.
