A method of recycling a first polymer from a multi-component polymer product may include subjecting the multi-component polymer product that includes a first polymer and at least one additional component to conditions to melt the first polymer; and filtering the at least one additional component from the molten first polymer.

A method for causing used tires to recycle themselves involves chopping used tires to create a feedstock, placing the feedstock within a recycling vessel able to withstand heat and pressure, introducing a caustic agent which will isolate and neutralize or precipitate hazardous substances such as carcinogens and heavy metals, introducing a non-aliphatic hydrocarbon supercritical reactant, raising the interior of the recycling vessel to a desired temperature and pressure to cause the supercritical reactant to enter a supercritical state and effuse into the feedstock where it chemically reacts with the used tire feedstock to release hydrocarbons and other materials from the used tire feedstock, and precipitously dropping pressure within the recycling vessel so that the supercritical reactant exits the used tire feedstock so quickly that it mechanically breaks the used tire feedstock material apart. Temperature within the recycling vessel can be increased by inductively heating the used tire feedstock. Hydrocarbon vapors and liquids which exit the used tire feedstock can be used to fuel a generator which provides electricity to heating by electrical induction. The hydrocarbon vapors and liquids can also be combusted to heat the recycling vessel or to preheat and dewater the used tire feedstock. Other than heavy metal contaminants and carcinogens, the used tire material can be re-used in new products.

Methods for the recycling of carpet are disclosed that produce clean face fiber suitable for industrial use. The methods allow the recovery of face fiber material, for example a polyester or a polyamide, from carpets that includes a face fiber material and a backing material, and include the steps of heating the carpet to a temperature lower than the melting point of the face fiber material, but higher than the initial thermal decomposition temperature of the backing material, for a time and at a temperature sufficient to thermally decompose, pyrolyze, or oxidize at least a portion of the backing material, rendering the backing material friable, that is more friable than the untreated backing; and applying mechanical force to the carpet so as to liberate the friable backing material from the face fiber material.

In a method and a device for recycling a thermoplastic fibre-reinforced composite material, which is in at least one deposition layer in a component (1), it is suggested that said fibre-reinforced composite material should be pulled off from the remaining component (1), in the direction of a main fibre direction, in at least one pull-off layer (10) comprising fibres and matrix material.

Processes are disclosed for separating a first layer from a remainder of a multilayer interlayer sheet, in which the multilayer sheet is heated, and thereafter the first layer is separated from the remainder of the multilayer interlayer sheet by pulling the first layer and the remainder of the multilayer interlayer sheet in different directions, in a defined orientation.

Waste treatment and recycling of a carbon fiber-reinforced plastic and a glass fiber-reinforced plastic are difficult owing to their excellent characteristics. The present invention has been completed on the basis of the finding that a reinforcing material can be recovered with high efficiency by bringing heated titanium oxide granules into contact with a reinforced plastic.

A method for producing a resin for recycling including separating a resin A for recycling including subjecting a resin composition containing the resin A for recycling and a resin B having a melting point higher than that of the resin A for recycling to a filtration treatment, wherein the resin A for recycling and the resin B are thermoplastic resins, and wherein the temperature of the resin composition to be subjected to the filtration treatment is equal to or higher than the melting point of the resin A for recycling and lower than the melting point of the resin B, and wherein the opening size of the filter used in the filtration treatment is a size that inhibits passing of the resin B, the method further including increasing a size of a dispersed particle size of the resin B prior to the separating step. The resin for recycling which can be separated according to the method of the present invention can be suitably used as bottled containers and packaging materials such as refilling package (pouch), which are used in various fields such as daily sundries such as shampoos, detergents, and cosmetics, and foods.

A continuous liquefaction and filtration system has a first device configured to melt and filter solid waste plastic material. A second device is in communication with the first device, and configured to melt solid waste plastic material. A feeding system is configured to feed waste plastic material into the first device. A vacuum unit is in communication with the first device and the second device. The vacuum unit configured to control a pressure level within the system. A method of processing solid waste plastic including the steps of providing the system and solid waste plastic; inserting the solid waste plastic into the first device; heating the solid waste plastic material; extracting the molten plastic with one of the extractors; sending a portion of the molten plastic to second device and recirculating another portion in the first device; and extracting the melt polymers.

A method for causing used tires to recycle themselves involves chopping used tires to create a feedstock, placing the feedstock within a recycling vessel able to withstand heat and pressure, introducing a caustic agent which will isolate and neutralize or precipitate hazardous substances such as carcinogens and heavy metals, introducing a non-aliphatic hydrocarbon supercritical reactant, raising the interior of the recycling vessel to a desired temperature and pressure to cause the supercritical reactant to enter a supercritical state and effuse into the feedstock where it chemically reacts with the used tire feedstock to release hydrocarbons and other materials from the used tire feedstock, and precipitously dropping pressure within the recycling vessel so that the supercritical reactant exits the used tire feedstock so quickly that it mechanically breaks the used tire feedstock material part. Temperature within the recycling vessel can be increased by inductively heating the used tire feedstock. Hydrocarbon vapors and liquids which exit the used tire feedstock can be used to fuel a generator which provides electricity to heating by electrical induction. The hydrocarbon vapors and liquids can also be combusted to heat the recycling vessel or to preheat and dewater the used tire feedstock. Other than heavy metal contaminants and carcinogens, the used tire material can be re-used in new products.

This invention details a method and device for recycling polymeric, composite, and industrial rubber waste. It involves a bath of liquid-metal coolant, made by melting metals like lead, bismuth, zinc, aluminum, and copper. This coolant is heated to 50-150? C. above its melting point. A layer of melted salts of alkaline and alkaline-earth metals is formed on the coolant's surface, topped by a purifying layer of melted active alkaline or alkaline-earth metals. Waste is pre-loaded into perforated-wall containers with horizontal partitions and submerged in the coolant bath, then removed after processing. The device includes guide rails, an internal space with a hearth, side walls, roof, inlet and outlet sluices, and a reaction chamber. This process improves desulphurization and dichlorination of pyrolysis products, yielding a solid carbon-containing residue.