Disclosed is a device for cooling particulate materials or particles, in particular granulates of polymeric materials, having an outer container with an, in particular frustoconical, outer shell surface and an inner container, which is arranged at least in sections in the interior of the outer container, with an, in particular frustoconical, inner shell surface, wherein an intermediate space is formed between the outer shell surface and the inner shell surface, wherein an inlet equipment for introducing a gas flow as well as the particles into the intermediate space is provided in an inlet-side initial region of the device, and wherein an outlet opening for the particles is provided in an outlet-side end region of the device opposite the inlet equipment, wherein the inlet equipment is so arranged and/or designed that the gas flow as well as the particles can be introduced substantially tangentially into the intermediate space.

A dispenser (100) for manufacturing an object is provided herein. The dispenser (100) includes a material feed portion (108) configured to provide a printing material. The dispenser (100) further includes a cold end portion (104) configured to cool down temperature of the printing material. The system further includes a coolant source (304) configured to use a liquid as coolant and provide cooling to the printing material. The dispenser (100) further includes a hot end portion (102) configured to convert printing material into a molten form and output the printing material for printing via a dispenser outlet (116).

A dispenser (100) for manufacturing an object is provided herein. The dispenser (100) includes a material feed portion (108) configured to provide a printing material. The dispenser (100) further includes a cold end portion (104) configured to cool down temperature of the printing material. The system further includes a coolant source (304) configured to use a liquid as coolant and provide cooling to the printing material. The dispenser (100) further includes a hot end portion (102) configured to convert printing material into a molten form and output the printing material for printing via a dispenser outlet (116).

Provided is a method of producing a film by cryogenically grinding polypropiolactone to form a powder, and extruding the powder to form the film. Provided herein are also polypropiolactone films having certain biocontent and compostability, as well as certain mechanical and physical properties. Such films may also be suitable for use as packaging materials.

Cartilage fibers and implants made therefrom are disclosed, with and without cartilage particles. Methods for making the cartilage fibers and the implants containing them are also disclosed. The implants may be pre-shaped, may be reshapable and, when implanted in a cartilage defect, the implants have good shape retention, little swelling, completely fill the cartilage defect and resist migration from the defect upon irrigation.

Cartilage fibers and implants made therefrom are disclosed, with and without cartilage particles. Methods for making the cartilage fibers and the implants containing them are also disclosed. The implants may be pre-shaped, may be reshapable and, when implanted in a cartilage defect, the implants have good shape retention, little swelling, completely fill the cartilage defect and resist migration from the defect upon irrigation.

A method for manufacturing an object by a dispenser is provided herein. The method includes feeding printing material to a printer. The method further includes receiving a liquid coolant from a coolant source. The method further includes cooling the printing material with the liquid coolant in a helical geometry of a core. The method further includes heating the printing material by a heat source. The method further includes dispensing the printing material for printing by the dispenser.

A method for manufacturing an object by a dispenser is provided herein. The method includes feeding printing material to a printer. The method further includes receiving a liquid coolant from a coolant source. The method further includes cooling the printing material with the liquid coolant in a helical geometry of a core. The method further includes heating the printing material by a heat source. The method further includes dispensing the printing material for printing by the dispenser.

The present disclosure discloses an injection molding method for fabricating a transparent device, and belongs to the technical field of material processing. The method comprises: preparing a nano-microsphere structural polymer material from a long-chain polymer material; obtaining a glass transition temperature and a viscous flow transition temperature of the nano-microsphere structural polymer material; obtaining a processing temperature of the nano-microsphere structural polymer material according to the glass transition temperature and the viscous flow transition temperature; drying the nano-microsphere structural polymer material; plasticizing the dried nano-microsphere structural polymer material according to the processing temperature; filling the plasticized nano-microsphere structural polymer material; cooling the filled nano-microsphere structural polymer material; and demolding the cooled nano-microsphere structural polymer material to form a transparent device. With the present disclosure, the technical effect that the fabricated device has high precision and no oriented optical distortion and strain birefringence is achieved.

Technologies are described for a method of making an encapsulated reactant having a desired shape or size. The method comprises providing solid reactant particles and an encapsulating material. The encapsulating material is heated above its solidification temperature to form a molten, semi-solid, or liquid encapsulating material. The solid reactant particles are added to the molten, semi-solid, or liquid encapsulating material and mixed to disperse the solid reactant particles in the encapsulating material and form a mixture. The mixture may be extruded or formed into the desired shape or size of the encapsulated reactant, or the mixture may be solidified and extruded, granulated, shredded, ground, or pressed into the desired shape or size.