Abstract: A sedimentation device for separating a material mix, preferably plastic flakes, including a sedimentation basin configured to receive the material mix and a liquid, for example water; an inlet configured to introduce the material mix and/or the liquid into the sedimentation basin; an outlet configured to remove sediment from the sedimentation basin; at least one stilling plate within the sedimentation basin configured as an ultrasonic oscillating element. The invention moreover relates to a method for removing sediment from a sedimentation device.

Abstract: A method for sorting out fine particles from a particle mixture arranged on a surface of a support element wherein the particle mixture comprises particles of different sizes, in particular fine particles with a diameter of up to 1 mm, where the fine particles are at least partially sorted out from the particle mixture by means of an electrostatically charged separating element.

Abstract: A method and a device for recycling labeled plastic articles are described. Accordingly, the labels are detached from the plastic articles and the plastic articles treated in this way are sorted in particular automatically. During sorting, plastic articles from which the labels have not been properly detached are sorted out and again subjected to the treatment for detaching the labels.

Abstract: A method of separating foreign polymers from a polymer mixture that comprises amorphous PET particles and crystalline PET particles, wherein the softening point of the foreign polymers is lower than that of the crystalline PET particles, and wherein the method includes separating the amorphous PET particles from the polymer mixture, heating the resulting polymer mixture to a temperature between the softening point of the foreign polymers and that of the crystalline PET particles, and separating the foreign polymers from the resulting polymer mixture. Also, a device for separating foreign polymers from a polymer mixture that comprises amorphous PET particles and crystalline PET particles, the device including a first separation unit for separating the amorphous PET particles from the polymer mixture, and a second separation unit for separating the foreign polymers from the resulting polymer mixture.

Abstract: An apparatus and a corresponding method for heating plastic bits, including a heating zone in which introduced plastic bits can be heated, and a heating device which is suited to conduct heat into the heating zone, the apparatus further including filling bodies which can be introduced into the heating zone and are suited to give off absorbed heat to the plastic bits in the heating zone.

Abstract: A sedimentation device for separating a material mix, preferably plastic flakes, including a sedimentation basin configured to receive the material mix and a liquid, for example water; an inlet configured to introduce the material mix and/or the liquid into the sedimentation basin; an outlet configured to remove sediment from the sedimentation basin; at least one stilling plate within the sedimentation basin configured as an ultrasonic oscillating element. The invention moreover relates to a method for removing sediment from a sedimentation device.

Abstract: A method for purifying thermoplastic polymers, comprising a step of filtering a polymer melt by way of a filter means, characterized in that said filter means is at least temporarily heated to a temperature which is higher than that of the polymer melt.

Abstract: Method for removing a foreign substance from a polymer composition including subjecting a polymer composition to a medium selected from the group comprising chemical reagents, electron beam radiation, electromagnetic radiation, or combinations thereof, removing the transformed foreign substance from the polymer composition, where the foreign substance is by subjecting the polymer composition to the medium at least partially transformed into a form that facilitates removal from the polymer composition.

Abstract: A method and a device for recycling labeled plastic articles are described. Accordingly, the labels are detached from the plastic articles and the plastic articles treated in this way are sorted in particular automatically. During sorting, plastic articles from which the labels have not been properly detached are sorted out and again subjected to the treatment for detaching the labels.

Abstract: A method for preparing contaminated plastics ground into flakes, such as RPET or such polymers, having at least decontamination and SSP treatment steps, with at least one reactor, with heating to the process temperature taking place essentially outside the reactor. Also, a device for carrying out the method, and having at least one decontamination reactor and at least one SSP reactor, a device for heating plastic flakes to the process temperature being arranged upstream of the decontamination reactor. Also an SSP reactor having at least two individual reactors, and preferably between 3 and 7 individual reactors.

Abstract: A device for reprocessing used plastic containers including a system for analyzing the degree of contamination of the plastic, a system for determining decontamination process parameters as a function of the degree of contamination thus detected, and a system for controlled decontamination of the plastic according to the decontamination process parameters thus determined. The system for determining decontamination process parameters provides determined decontamination process parameters to corresponding decontamination control elements that are automatically adjusted depending on the degree of contamination.

Abstract: A method for preparing contaminated plastics ground into flakes, such as RPET or such polymers, having at least decontamination and SSP treatment steps, with at least one reactor, with heating to the process temperature taking place essentially outside the reactor. Also, a device for carrying out the method, and having at least one decontamination reactor and at least one SSP reactor, a device for heating plastic flakes to the process temperature being arranged upstream of the decontamination reactor. Also an SSP reactor having at least two individual reactors, and preferably between 3 and 7 individual reactors.

Abstract: A device for reprocessing used plastic containers including a system for analyzing the degree of contamination of the plastic, a system for determining decontamination process parameters as a function of the degree of contamination thus detected, and a system for controlled decontamination of the plastic according to the decontamination process parameters thus determined. The system for determining decontamination process parameters provides determined decontamination process parameters to corresponding decontamination control elements that are automatically adjusted depending on the degree of contamination.

Abstract: A method of purifying a thermoplastic polymer having at least one dispersed filler, including preparing a polymer melt of the thermoplastic polymer, and filtering the polymer melt, where the dispersed filler is at least partially transformed to a coagulated and filterable form before the filtering step. Also, a device for purifying the thermoplastic polymer, including means for preparing a polymer melt from the thermoplastic polymer, and filter means, and means for generating sound waves, preferably ultrasonic waves.

Abstract: A method and device for reprocessing used plastic containers, especially PET bottles, by analyzing the degree of contamination of the plastic, determining the decontamination process parameters as a function of the degree of contamination found in the analyzing step, and conducting a controlled decontamination of the plastic according to the decontamination process parameters thus determined. With this method and this device, it is thus possible to perform the decontamination process step in a controlled manner, yielding a more economical reprocessing method.

Abstract: A method of separating foreign polymers from a polymer mixture that comprises amorphous PET particles and crystalline PET particles, wherein the softening point of the foreign polymers is lower than that of the crystalline PET particles, and wherein the method includes separating the amorphous PET particles from the polymer mixture, heating the resulting polymer mixture to a temperature between the softening point of the foreign polymers and that of the crystalline PET particles, and separating the foreign polymers from the resulting polymer mixture. Also, a device for separating foreign polymers from a polymer mixture that comprises amorphous PET particles and crystalline PET particles, the device including a first separation unit for separating the amorphous PET particles from the polymer mixture, and a second separation unit for separating the foreign polymers from the resulting polymer mixture.

Abstract: An apparatus for purifying thermoplastic polymers, including a means for generating and conveying a polymer melt, the means including a first heating unit and a filter means, and the filter means including a second heating unit. And a method for purifying thermoplastic polymers, including a step of filtering a polymer melt by way of a filter means, wherein the filter means is at least temporarily heated to a temperature which is higher than that of the polymer melt.

Abstract: A method of purifying a thermoplastic polymer having at least one dispersed filler, including preparing a polymer melt of the thermoplastic polymer, and filtering the polymer melt, where the dispersed filler is at least partially transformed to a coagulated and filterable form before the filtering step. Also, a device for purifying the thermoplastic polymer, including means for preparing a polymer melt from the thermoplastic polymer, and filter means, and means for generating sound waves, preferably ultrasonic waves.

Abstract: A method for sorting out fine particles from a particle mixture arranged on a surface of a support element wherein the particle mixture comprises particles of different sizes, in particular fine particles with a diameter of up to 1 mm, where the fine particles are at least partially sorted out from the particle mixture by means of an electrostatically charged separating element.

Abstract: A method for reprocessing used PET bottles having the step of shredding the bottles to form plastic flakes, sorting the plastic flakes according to at least one criterion into at least two partial quantities, and performing an individual processing treatment including a decontamination treatment. The device permits performing the method whereby it is possible to separate the plastic flakes produced from the threaded part of a PET bottle, these flakes being more difficult to purify, from the lighter plastic flakes from the wall of the bottle, which have a thin wall and are easier to purify, and treating them further in separate reprocessing steps.