A polyethylene composition suitable for rotomolding and comprising a blend of a stabilized polyethylene, and optionally a substantially non-stabilized polyethylene, with a recycled polymer (PCR), is described. By using a PCR with a higher density and lower melt flow as compared to the stabilized polyethylene, a higher portion of the recycled polymer is present on the interior surface f the rotomolded part. Oxidation of the recycled polymer results in formation of oxidized species, such as carbonyl groups, on the interior surface of the part, which along with higher surface roughness enhances adhesion between the interior surface and coatings or fillings, such as polyurethane, used to provide a layer of insulation or improve structural strength or buoyancy.

Disclosed is a recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder. The recycling apparatus for a cross-linked polyethylene resin using a twin screw extruder according to an embodiment of the present disclosure includes: a raw material supply unit configured to supply a raw material that is a cross-linked polyethylene resin; and a twin screw extruder configured to receive the raw material from the raw material supply unit, the twin screw extruder including a cylinder and a twin screw installed inside the cylinder to rotate in the same direction, the twin screw extruder being configured to de-crosslink and recycle the raw material under a de-crosslinking reaction temperature and reaction pressure atmosphere while continuously transporting the raw material along the twin screw by the rotation of the twin screw.

A pipe fixing device includes a fixing portion formed in a channel shape in which a first space therein is opened to an outside through an opening formed in an upper portion; and a support coupled to a lower portion of the fixing portion and made of steel-making slag, wherein a part of upper end edges of the fixing portion corresponding to a front and a rear of the opening is formed to be bent toward the first space.

Provided are a recycling method which can easily separate a plastic film laminate into individual single layers and recover the layers, a recycled plastic processing material which can be processed into a high-quality recycled plastic from a plastic film laminate, and a method for producing the recycled plastic processing material. A recycling method for a laminate, winch includes crushing a plastic film laminate having at least two layers in water or a cleaning agent simultaneously with conducting pumping so that the crushed material obtained by crushing the laminate has a surface roughness of 0.7 μm or more.

Systems for manufacturing bulked continuous filament having tonal coloring from PET comprise, in various embodiments: (1) an extruder; (2) a static mixing assembly coupled to the extruder comprising: (a) a housing, and (b) one or more individual static mixing elements disposed within the housing; (3) a plurality of colorant ports along a length of the static mixing assembly such that each of the plurality of colorant ports is configured to provide colorant to a polymer stream at a different location along the length of the static mixing assembly; and (4) one or more spinning machines positioned downstream of the static mixing assembly and coupled to the static mixing assembly to receive the colored polymer stream. The spinning machine(s) may be configured to form the colored polymer stream into bulked continuous carpet filament having a tonal color effect.

An assembly appliance for mould tool parts of an injection moulding tool is disclosed, the assembly appliance including an assembly plate configured for insertion into an injection moulding machine and including a tool carrier for receiving first mould tool parts to be assembled; and an assembly frame having a guide system for a translatory displacement of the assembly plate along a longitudinal extension of the assembly frame, and a support device for stationary support of a second mould tool part which corresponds to at least one of the first mould tool parts.

A cellulose-fiber-dispersing polyolefin resin composite material, containing a polyolefin resin containing a polypropylene resin, and a cellulose fiber dispersed in the polyolefin resin, in which a proportion of the cellulose fiber is 1 mass part or more and 70 mass parts or less in a total content of 100 mass parts of the polyolefin resin and the cellulose fiber, and the water absorption ratio satisfies the following Formula: (Water absorption ratio [%])<(Cellulose effective mass ratio [%]).sup.2×0.01; a pellet and a formed body using this composite material; and a production method for this composite material.

Techniques for converting plastic bags to a recyclable form are described. In some implementations, a device includes an outer container having an outer lid, an inner container situated within the outer container having an opening, and one or more heating elements. The inner container has an inner lid configured to cover the inner container's opening, and the outer lid of the outer container is configured to close over the inner lid. In response to a user input to the device, a conversion cycle is initiated in which electric power is supplied to one or more heating elements so that the one or more heating elements raise the inner container's internal temperature to a target temperature and maintain the inner container's internal temperature at a minimum of the target temperature for a predetermined conversion time sufficient to convert one or more plastic bags within the inner container to a recyclable plastic block.

A method of recycling a mixed plastic waste comprising plastics having different melting temperatures includes conveying the mixed plastic waste through an extruder such that at least some of the higher melting point plastic is passes through the extruder without melting and is present in the extrudate as solid material.

A composite material having physical characteristics equivalent to particle board materials bonded with resin-based adhesives that contain formaldehyde-urea is formed of reclaimed textile debris comprising fabric scraps and a latex based binder. The binder includes natural rubber latex, sulfur, an anti-oxidant agent and pH adjustment substances. The binder may also include selected amounts of zinc oxide, zinc diethyldithiocarbamate and a stabilizer. Production of the composite material includes mixing the constituents and vulcanization through the application of heat and compression. Cold compression is subsequently applied.