Abstract: Embodiments of the present invention address deficiencies of the art in respect to composite recycling and provide a novel and non-obvious dissolution tank, recycling system and recycling process adapted for the separation of fibers during composite dissolution. In an embodiment of the invention, a dissolution tank adapted for composite dissolution and fiber separation includes a tank, a pair of opposing perforated structures disposed within the tank, an actuator coupled to the perforated structures and configured to drive the pair of structures towards one another, and a control system programmed to direct the actuator to drive the structures towards one another responsive to a determination that a composite part disposed between the structures is transforming from a rigid state.

Abstract: Disclosed is a method for recycling polyolefin containing waste by using a solvent with a specific Hansen parameter and contacting this mixture with a liquid filtration aid before separating the polyolefin from the mixture. The method includes the steps of mixing the polyolefin containing waste with a solvent having a Hansen parameter ?H from 0.0 to 3.0 MPa1/2; contacting this mixture with a liquid filtration aid having a Hansen parameter ?H>4.0 MPa1/2; and separating the polyolefin from the mixture.

Abstract: The invention refers to a method for recycling polyolefin containing waste by using a solvent with a specific Hansen parameter and contacting this mixture with a liquid filtration aid before separating the polyolefm from the mixture. The method comprises the following steps: Mixing the polyolefm containing waste with a solvent having a Hansen parameter ?H from 0.0 to 3.0 M Pa1/2; Contacting this mixture with a liquid filtration aid having a Hansen parameter ?H>4.0 M Pa1/2; and Separating the polyolefin from the mixture.

Abstract: Disclosed is a method for separating differently additivated polymers based on polystyrene, the copolymers and/or blends thereof. This method is used in particular when recycling flame-retardant plastic materials, in particular from old electrical appliances. The method is characterised by a density separation with at least one liquid or gaseous separation medium.

Abstract: The invention relates to a method for recycling plastic materials which contain at least two polymers, copolymers or blends thereof based on polystyrene. The plastic material is thereby mixed with a solvent for the polymers, copolymers or blends. Subsequently a precipitation is effected by addition of a corresponding precipitant so that then the gelatinous precipitation product can be separated from the further components of the plastic material. The method is used for recycling of any plastic materials, in particular of plastic materials from electronic scrap processing and from shredder light fractions.

Abstract: The invention relates to a method for recycling plastic materials which contain at least two polymers, copolymers or blends thereof based on polystyrene. The plastic material is thereby mixed with a solvent for the polymers, copolymers or blends. Subsequently a precipitation is effected by addition of a corresponding precipitant so that then the gelatinous precipitation product can be separated from the further components of the plastic material. The method is used for recycling of any plastic materials, in particular of plastic materials from electronic scrap processing and from shredder light fractions.

Abstract: The invention relates to a method for separating differently additivated polymers based on polystyrene, the copolymers and/or blends thereof. This method is used in particular when recycling flame-retardant plastic materials, in particular from old electrical appliances. The method according to the invention is characterised by a density separation with at least one liquid or gaseous separation medium.

Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.

Abstract: The invention relates to a method for separating target polymers and their additives from a material containing polymers, as a result of which the recovery both of the target polymers and of the additives is made possible. Based on the principle of a selective precipitation, the target polymer is precipitated and subsequently separated from the additives present in solution and dissolved foreign polymers. The separation of the additives from the solution is effected in a further step.