A method of fabricating plastic products having a preselected characteristic, comprising preparing a dispersion of at least one additive contributes the preselected characteristic in cottonseed oil; supplying a preselected plastic resin for the product to be fabricated to a process machine having a rotating screw; furnishing the dispersion to the process machine at a position adjacent to threaded portion of the rotating screw; and blending the dispersion and the resin by rotating the screw.

Molded plastic products having fine particles of copper-based compound with relatively low price, simple process and good economic feasibility and productivity, and method of manufacturing the products are provided. A chemical structure of the molded plastic products is Cu.sub.xM.sub.y, wherein M is any one selected from groups 15 to 17 of the periodic table, x/y is 0.5-1.5. Also the molded plastic products comprises thermoplastic resin which contains dispersed therein copper-based particles reacts copper sulfate with any one salt, selected from among sulfuric salt, hydrofluoric salt and hydrochloric salt, at a molar ratio of 1:1 in an aqueous solution at a temperature of 1080 C.

A water delivery pipe made from PVC or PVCO and having an inner surface which is rifled. The inner surface of the pipe preferably includes a graphene material. The pipe has improved anti-bacterial properties such that the formation of bacterial biofilms is eliminated or reduced. Methods of making the pipe are also disclosed.

Provided is a method for manufacturing a molded plastic products having copper-based compound particulates. The method includes the steps of: reacting copper sulfate with sulfuric salt, at a molar ratio of 1:1 in an aqueous solution at a temperature of 1080 C., thereby synthesizing copper sulfide particulates; forming a sheet comprising the copper sulfide particulates dispersed in a thermoplastic resin.

Devices and methods are described that provide printing of three-dimensional objects using reactive materials such as materials that result in a polyurethane formulation. Three-dimensional printing in accordance with the present disclosure can be performed using an inkjet printer or other systems that deposit or dispense material. A formulation made up of two or more reactive materials and, optionally, one or more UV-curable materials is also provided. The materials can be jetted based on a desired configuration to achieve a maximum reaction between materials, and can be based on desired jetting or molar ratios. By heating or applying energy on the jetted materials, their reaction and related solidifying can be accelerated. Corrective printing is also provided for, and can be used at desired intervals to eliminate printing errors relative to the object as modeled. Systems and methods used in conjunction with all of the same are provided.

A method of making synthetic polymer pellet feedstock having a high concentration of an anti-microbial agent includes the steps of: introducing a polymer into a mixing vessel; introducing a polysiloxane dispersant into the mixing vessel; introducing an anti-microbial agent comprised of a powdered metal material into the mixing vessel; heating and mixing the polymer, the polysiloxane dispersant and the anti-microbial agent to form a molten blend that exhibits a generally homogenous dispersal of the anti-microbial agent; extruding the molten blend to form filaments; and cutting the filaments to form metalized synthetic polymer pellet feedstock. The powdered metal material includes particles of silver in metallic or salt form measuring between about 2 micrometers and about 12 micrometers and particles of copper in metallic or salt form measuring between about 2 micrometers and about 12 micrometers.

This invention relates to a monolithic molded part comprising multiple cohesive matrices for the simultaneous diffusion of volatile active ingredients, in contact or separately, wherein said multiple matrix is formed by the combination of several simple matrices, characterized in that each of said simple matrices is capable of containing one or more active ingredient(s), each active ingredient having its own release kinetics.

A liquid colorant for use in molding or extruding plastic products comprises pigment dispersed in cottonseed oil.

A liquid colorant for use in molding or extruding plastic products comprises pigment dispersed in cottonseed oil.

A multi-layer article including a first non-active state and a second active state, the multi-layer article comprising an outer layer having a first side and a second side, an inner layer adjacent to at least a portion of the outer layer and including a volatile material, and an upper layer including a first side and a second side, the first side of the upper layer being adjacent to at least a portion of the inner layer. The multi-layer article is folded upon itself in the first non-active state so that at least a first portion of the second side of the upper layer is disposed on a top of a second portion of the second side of the upper layer, and the first portion and the second portion of the upper layer are heat sealed in the non-active state.