A conveyance unit mounted to a machine for initial processing of natural raw rubber into aged rubber product, includes: a discharge delivery belt connected with the machine to receive the aged rubber product; a vibration delivery device connected to the discharge delivery belt to selectively delivery the aged rubber product from the discharge delivery belt; a drying and cooling device, comprising an elongated channel body and a circulation system mounted therein, wherein the rubber product is entered from one end of the elongated channel body while being dewatered and left from the other end of the elongated channel body, wherein the circulation system is operated to provide wind inside the elongated channel body for drying and cooling the rubber product; and a cutting device connected to the elongated channel body of the drying and cooling device to cut the dried rubber product into aged product.

A latex composition has a latex of a carboxyl group-containing conjugated diene rubber (A), and a plasticizer (B) having a SP value of 15 (cal/cm.sup.3).sup.1/2 or less, wherein the content of a plasticizer (B) is 0.1 to 15 parts by weight based on 100 parts by weight of the carboxyl group-containing conjugated diene rubber (A) included in the latex.

A method for producing a laminate including a substrate and a rubber layer, the rubber layer having a thickness of 200 m or more from the surface of the substrate, the method including contacting the substrate in a heated state with a polymer latex having a viscosity of 2,000 to 100,000 mPa.Math.s at 25 C. to thereby coagulate the polymer in contact therewith to form the rubber layer.

A liquid latex emulsion is compressed to align the randomly arranged molecules to form rows of aligned molecules. A continuous flow of the liquid is created in the direction of the rows of aligned molecules. A first latex layer of rows of aligned latex molecules is created on a form by immersing the form into the continuous flow of compressed liquid at a first immersion angle. A second latex layer is created on the first latex layer, the second latex layer has rows of aligned latex molecules extending in a direction different the rows of aligned latex molecules of the first layer. The second latex layer is formed by immersing the form with the first latex layer into the flow of compressed liquid at an immersion angle different from the first immersion angle.

A liquid latex emulsion is compressed to align the randomly arranged molecules to form rows of aligned molecules. A continuous flow of the liquid is created in the direction of the rows of aligned molecules. A first latex layer of rows of aligned latex molecules is created on a form by immersing the form into the continuous flow of compressed liquid at a first immersion angle. A second latex layer is created on the first latex layer, the second latex layer has rows of aligned latex molecules extending in a direction different the rows of aligned latex molecules of the first layer. The second latex layer is formed by immersing the form with the first latex layer into the flow of compressed liquid at an immersion angle different from the first immersion angle.

Provided herein according to some embodiments is polymerizable liquid useful for the production of a three-dimensional object by additive manufacturing, said polymerizable liquid comprising a mixture of: (a) at least one photopolymerizable component; (b) a photoinitiator; (c) at least one heat polymerizable component; and (d) heat expandable microspheres. A method of making a three-dimensional object from such a polymerizable liquid by additive manufacturing and objects so produced are also provided.

Systems and methods for managing the waste associated with the extraction of rubber from guayule shrubs are provided. Also provided is a portable local sub-station for reducing the transportation costs associated with the processing of guayule shrubs for the extraction of rubber. Use of the disclosed systems, methods and/or local sub-station can reduce transportation costs, reduce processing costs and reduce the downstream processing complexity associated with the extraction of rubber from guayule shrubs.

The present application relates to an elastomeric article, such as a glove, comprising: (i) an elastomeric film comprising one or more film layers, and including an external surface and an internal surface, (ii) an antimicrobial agent that is effective against both beneficial and harmful microorganisms on the external surface of the elastomeric film, and (iii) a skin-protective agent selected from a probiotic, a prebiotic, or a combination thereof on the internal surface of the elastomeric film; wherein the inner surface of the film is free of an antimicrobially-effective amount of an antimicrobial agent that is effective against both beneficial and harmful microorganisms. The elastomeric articles may further comprise a barrier film layer that provides separation between the antimicrobial agent and the skin-protective agent. Also described are methods for the manufacture of such articles.

A latex composition including a latex of a carboxyl group-containing conjugated diene-based rubber (A), a water-soluble metal compound (B), and a water-insoluble metal compound (C) including a transition metal of Group IV of the periodic table, wherein the metal compound (C) is present in an amount of 0.5 to 4 parts by weight relative to 100 parts by weight of the carboxyl group-containing conjugated diene-based rubber (A).

A connection including a first profile having a first end and a first lumen, the first profile including a first polymeric material and a second profile having a second end and a second lumen, the second profile including a second polymeric material, a metal, or combination thereof, wherein the first end and the second end are coincidently welded via an ionized gas treatment.