James Hardie Irrigation, Inc.

Tactyl Technologies, Inc.

Safeskin Corp.

Kermit R Littleton

Garth Brown

Sebastian S Plamthottam

John M Langa

Michael J Boswell

Jali Lamar Williams

Jason Baker

K C Nguyen

Ronald Gloriani

An elastomeric article such as a glove includes a substrate body made of an styrene-ethylene-butylene-styrene block copolymer, and a donning layer overlying at least one side of the substrate body. The donning layer is formed of 1,2 polybutadiene, preferably syndiotactic 1,2 polybutadiene, or a chlorinated mid block unsaturated block copolymer. Optionally, a surfactant layer is present over the donning layer to further improve the donning characteristics. The surfactant layer is preferably an alkyl dimethylbenzyl quaternary, an alkyl trimethyl quaternary, a dialkyl dimethyl quaternary, sodium lauryl sulfate, or pyridinium chloride.

Readily-donned elastomeric articles

An elastomeric article such as a glove includes a substrate body made of an styrene-ethylene-butylene-styrene block copolymer, and a donning layer overlying at least one side of the substrate body. The donning layer is formed of a chlorinated styrene-isoprene, preferably having a polystyrene block content of from about 10 to about 20 percent by weight of the total copolymer weight and an end block polystyrene molecular weight of at least about 5,000. Optionally, a surfactant-containing layer may be present over the donning layer to further improve the donning characteristics. The article is preferably prepared by dip forming the article from an styrene-ethylene-butylene-styrene block copolymer, coating the article with a solution of the styrene-isoprene block copolymer, removing the solvent, and chlorinating the styrene-isoprene block copolymer.

Readily donned, powder free elastomeric article

Turbulent-flow emitter channel sections are vacuum-formed in an extruded flat plastic strip. The strip is then applied to a hose substrate, and inlet and outlet openings are formed at opposite ends of the channel sections. The strip may be hot-melt bonded to the substrate during a co-extrusion process, or it may be applied to the hose substrate in a separate operation. Flow rates are easily controlled without changing the structure of the strip by varying the number of channel sections in which outlet openings are formed.

Irrigation hose with linear turbulent flow emitter

An emitter includes a body member having a head portion. The head portion has an outer peripheral surface that defines an elongated channel and the channel extends along a tortuous path from an inlet end of the channel to an outlet end of the channel. A cover of heat shrinkable material is shrunk over the outer peripheral surface of the head portion covers the channel to form a turbulent flow passage. The head portion may include generally opposed, first and second transverse surfaces between which the outer peripheral surface extends, the cover extending partially over the transverse surfaces to form flanges that engage the transverse surfaces. The heat shrinkable material may be shrinkable both axially and circumferentially for this purpose. One embodiment includes an emitter outlet in the form of an annular basin that is fed with a non-radially disposed slot to produce a self-cleaning vortex action.

Drip emitter

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Julian, CA, United States of America

Kermit R Littleton