A device for pastillating a flowable product, in particular a melt. The device has a revolving belt and a drop former, and the drop former deposits product drops on an upper run of the belt. The product drops, in the course of transportation on the upper run of the belt, solidify to form pastilles, and an arrangement for wetting the belt with a liquid release agent is provided upstream of that region in which the product drops are deposited on the belt. The release agent prevents or reduces the adhesion of the product drops to the belt, and a proportional metering pump is provided for continuously mixing the release agent from at least two liquid components during the operation of the device.

A device for pastillating a flowable product, in particular a melt. The device has a revolving belt and a drop former, and the drop former deposits product drops on an upper run of the belt. The product drops, in the course of transportation on the upper run of the belt, solidify to form pastilles, and an arrangement for wetting the belt with a liquid release agent is provided upstream of that region in which the product drops are deposited on the belt. The release agent prevents or reduces the adhesion of the product drops to the belt, and a proportional metering pump is provided for continuously mixing the release agent from at least two liquid components during the operation of the device.

The rotational molding system comprising an internal air cooling system disposed on the mold and configured for one or more of selectively controlling air flow into or out of a cavity of the mold for actively cooling an interior surface of a part, pressurizing the cavity of the mold, allowing pressure equalization, or venting of off-gases. A first thermocouple and a second thermocouple disposed within the cavity to measure a temperature at the exterior surface of a part and the mold cavity. A control system in electronic communication with both said first thermocouple and said second thermocouple, may selectively operate the internal air cooling system to maintain the temperature of the cavity and the part's outside surface substantially the same. The mold and/or the oven containing the mold may be disposed for rotation about a first axis and a second axis during the rotational molding process.

The rotational molding system comprising an internal air cooling system disposed on the mold and configured for one or more of selectively controlling air flow into or out of a cavity of the mold for actively cooling an interior surface of a part, pressurizing the cavity of the mold, allowing pressure equalization, or venting of off-gases. A first thermocouple and a second thermocouple disposed within the cavity to measure a temperature at the exterior surface of a part and the mold cavity. A control system in electronic communication with both said first thermocouple and said second thermocouple, may selectively operate the internal air cooling system to maintain the temperature of the cavity and the part's outside surface substantially the same. The mold and/or the oven containing the mold may be disposed for rotation about a first axis and a second axis during the rotational molding process.

A method for the preparation of a composite material having a pre-designed structure and properties according to the intended use of said composite material is provided. The method includes generating data for dispensing two or more different interface materials having different properties into at least two different phases; selectively depositing said two or more different interface materials having different properties from two or more corresponding dispensers to form layers according to the data generated, each interface material being dispensed from a different dispenser to form at least two different phases of interface materials; and curing or solidifying the dispensed layers to obtain a composite material with pre-designed structure and properties.

A method for the preparation of a composite material having a pre-designed structure and properties according to the intended use of said composite material is provided. The method includes generating data for dispensing two or more different interface materials having different properties into at least two different phases; selectively depositing said two or more different interface materials having different properties from two or more corresponding dispensers to form layers according to the data generated, each interface material being dispensed from a different dispenser to form at least two different phases of interface materials; and curing or solidifying the dispensed layers to obtain a composite material with pre-designed structure and properties.

A one-step solution casting method for preparing a PVDF-based pyroelectric polymer film is provided, which belongs to the technical field of functional material preparation. The method comprises steps of: treating a substrate with a hydrophilic reagent to obtain a hydrophilically-modified substrate, and then casting the organic solution of polyvinylidene fluoride (PVDF) or its copolymer on the hydrophilically-modified substrate. After cured, the as-casted PVDF-based film shows pyroelectricity without undergoing any stretching or poling post-treatment, indicates that the dipoles of the one-step prepared film are aligned. The self-polarization of the prepared film is attributed to a hydrogen bond induced layer-by-layer electrostatic self-assembly growth mechanism. The method is simple, low cost, high efficient, high capability to produce thick and large-area film with smooth morphology and ease to be scalized.

A one-step solution casting method for preparing a PVDF-based pyroelectric polymer film is provided, which belongs to the technical field of functional material preparation. The method comprises steps of: treating a substrate with a hydrophilic reagent to obtain a hydrophilically-modified substrate, and then casting the organic solution of polyvinylidene fluoride (PVDF) or its copolymer on the hydrophilically-modified substrate. After cured, the as-casted PVDF-based film shows pyroelectricity without undergoing any stretching or poling post-treatment, indicates that the dipoles of the one-step prepared film are aligned. The self-polarization of the prepared film is attributed to a hydrogen bond induced layer-by-layer electrostatic self-assembly growth mechanism. The method is simple, low cost, high efficient, high capability to produce thick and large-area film with smooth morphology and ease to be scalized.

The presently disclosed subject matter relates to systems for making an implantable construct comprising a reservoir coupled to the at least one frame; a mandrel base coupled to the at least one frame; a mandrel coupled to the mandrel base; a first mechanism configured to be coupled to the at least one frame and configured to move the at least one frame along a first axis; a second mechanism configured to be coupled to the at least one frame and configured to rotate the least one mandrel base along a second axis between a first orientation and a second orientation; and a container configured to be coupled to the at least one frame and configured to receive the mandrel in the second orientation. The disclosed mechanisms can manually, semi-automatically, or automatically control the movements of the at least one frame, reservoir, mandrel, mandrel base, and container to produce the construct with a lumen. The presently disclosed subject matter also relates to methods for making the construct.

The presently disclosed subject matter relates to systems for making an implantable construct comprising a reservoir coupled to the at least one frame; a mandrel base coupled to the at least one frame; a mandrel coupled to the mandrel base; a first mechanism configured to be coupled to the at least one frame and configured to move the at least one frame along a first axis; a second mechanism configured to be coupled to the at least one frame and configured to rotate the least one mandrel base along a second axis between a first orientation and a second orientation; and a container configured to be coupled to the at least one frame and configured to receive the mandrel in the second orientation. The disclosed mechanisms can manually, semi-automatically, or automatically control the movements of the at least one frame, reservoir, mandrel, mandrel base, and container to produce the construct with a lumen. The presently disclosed subject matter also relates to methods for making the construct.