Adhesive and method of jointing articles of polyolefin using the same
AssigneeDainichi-Nippon Cables, Ltd.
InventorsMasatake Matsui, Chiaki Momose, Kazunori Terasaki
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Abstract
An adhesive, suitable for joining cured polyolefin articles, comprising a water curable polyolefin having a melt index of from 0.1 to 20, and a method of joining cured polyolefin articles, especially cured polyethylene pipes, comprising a step to apply the above adhesive to the surface of the articles and a step to join both of the surfaces to each other with the melt of the adhesive.
Claims11
A method for joining polyolefin piping elements at least one of whose surfaces to be joined have a gel fraction of at least 20% by weight, which comprises applying an adhesive comprising a water curable polyolefin having a melt index of 0.1 to 20 to one or both of the above surfaces, said adhesive being applied in a melted state, and placing both of the surfaces in contact with each other and water curing the adhesive to obtain a bond which will withstand an internal water pressure which is at least as high as the rupture pressure of the polyolefin piping element.
Dependencies are inferred from the claim text.