The present disclosure relates to a bioprinter spray head assembly, comprising a mounting block having a passage and a spray head mounted in the passage, wherein a first flow channel is provided in the mounting block, one end of the first flow channel is provided with a port communicating with the passage; the spray head comprises an equal diameter portion away from an outlet of the passage and a reduced diameter portion close to the outlet of the passage, wherein a second flow channel is formed between the reduced diameter portion and the passage, an opening is formed between the reduced diameter portion and the port to communicate the first flow channel and the second flow channel, and the equal diameter portion is configured to occlude the port. The adjustment of the circulation area of the spray head assembly may be achieved by changing the relative positions of the reduced diameter portion and the port, so that the adjustment is convenient and easy to carry out, and there is a favorable implementability.

The present disclosure relates to a bioprinter spray head assembly, comprising a mounting block having a passage and a spray head mounted in the passage, wherein a first flow channel is provided in the mounting block, one end of the first flow channel is provided with a port communicating with the passage; the spray head comprises an equal diameter portion away from an outlet of the passage and a reduced diameter portion close to the outlet of the passage, wherein a second flow channel is formed between the reduced diameter portion and the passage, an opening is formed between the reduced diameter portion and the port to communicate the first flow channel and the second flow channel, and the equal diameter portion is configured to occlude the port. The adjustment of the circulation area of the spray head assembly may be achieved by changing the relative positions of the reduced diameter portion and the port, so that the adjustment is convenient and easy to carry out, and there is a favorable implementability.

The present application relates to a pattern forming method for quartz surface and a pattern forming device for quartz surface. According to the pattern forming method for quartz surface of the present application, by comprising a step of forming a pattern and a step of forming a color, it is possible to freely express the color on the pattern simultaneously along with forming the pattern on the quartz surface. And, in addition to these steps, by optionally comprising a step of additionally forming a pattern, it is possible to freely form a desired pattern on the quartz surface, and, by adding long line type patterns on the quartz surface unlike existing conventional quartz surfaces, it is possible to produce the quartz surface showing patterns and textures which are more natural and close to natural stone.

An implantable, autonomously growing medical device is disclosed. The device may have an outer, braided outer element that holds an inner core. Degradation and/or softening of the inner core permits the outer element to elongate, allowing the device to grow with surrounding tissue. The growth profile of the medical device can be controlled by altering the shape/material/cure conditions of the inner core, as well as the geometry of the out element.

An implantable, autonomously growing medical device is disclosed. The device may have an outer, braided outer element that holds an inner core. Degradation and/or softening of the inner core permits the outer element to elongate, allowing the device to grow with surrounding tissue. The growth profile of the medical device can be controlled by altering the shape/material/cure conditions of the inner core, as well as the geometry of the out element.

A method of forming a polyolefin-perovskite nanomaterial composite which contains oriented electrically and thermally conductive pathways. The method involves milling a polyolefin with particles of a perovskite nanomaterial, molding to forma composite plate, and subjecting the composite plate to an AC voltage. The AC voltage forms oriented electrically and thermally conductive pathways by partial dielectric breakdown of the composite. The presence of the oriented electrically and thermally conductive pathways gives the polyolefin-perovskite nanomaterial electrical and thermal conductivity and dielectric permittivity higher than the polyolefin alone.

A method for creating a three dimensional (3D) object from reactive components that form a thermoset product. In one embodiment, a method includes providing first and second reactive components that are effective to form the thermoset product. In one embodiment, the thermoset product includes a urethane and/or urea-containing polymer. In one embodiment, the first reactive component includes an isocyanate and the second reactive component includes a polyol having at least one terminal hydroxyl group, a polyamine having at least one amine that includes an isocyanate reactive hydrogen, or a combination of the polyol and the polyamine. In one embodiment, the first reactive component includes a prepolymer, and optionally the ratio of viscosity of the first and second reactive components is from 1:3 to 3:1. Also provided is a 3D object that includes a completely reacted thermoset product, and a thermoset system that includes a first and a second reactive component.

Method of making golf ball comprising aligning thermoformed depressions with dimpled mold cups and applying sufficient heat and suction to the thermoformed depressions without exposing any preselected subassembly to the heat and suction to soften the polymeric material of each thermoformed depression and draw air outward from a volume located between an inner surface of the dimpled mold cup and an outer surface of the thermoformed depression to form a thermoformed pre-form half-shell having an outer surface with the size, shape and contour of the inner surface of the dimpled mold cup(s) and an inner surface with the size, shape and contour of the outer surface of a preselected subassembly. Afterwards, a preselected subassembly is loaded between a pair of thermoformed pre-form half-shells and molded under sufficient short-term heat and suction to form the golf ball. The thickness of each thermoformed depression and thermoformed pre-form half-shell may be tapered.

The invention relates to a high-pressure mixing, dosing and recirculation head for injection or casting reaction molding, said high-pressure mixing, dosing and recirculation head comprising a head body, a mixing chamber, obtained in the head body wherein a valve element or mixing valve slides and in fluid communication with a supply duct, and a self-cleaning element comprising a scraping portion, said self-cleaning element being structured to slide in said supply duct, as well as comprising an apparatus for controlling and commanding mixing, supply and recirculation comprising a plurality of sensors and transducers mounted on board of the head body and of the components parts of the head connected thereto to detect and transform representative physical quantities of at least one operational status of said high-pressure mixing, dosing and recirculation head into electrical signals and an electronic control and storing system adapted to synchronously control and scan said sensors and transducers and adapted to receive and process said electrical signals indicative of said at least one operational status, at the beginning and during the operational phases of said high-pressure mixing, dosing and recirculation head to compare them with each other and with electrical signals representative of a predetermined reference operational status. The invention also relates to a high-pressure mixing, dosing and recirculation method for injection or casting reaction molding.

The present invention discloses an apparatus and a method for manufacturing molding inductor. The apparatus mainly comprises a mold and at least one magnetic force generating unit. Particularly, the mold is designed to have one or more accommodation spaces to correspondingly receive one or more coils. On the other hand, the magnetic force generating unit is configured to apply a magnetic force to the accommodation spaces after a molding material doped with magnetic ferrite powder is filled into the accommodation spaces receiving with the coil therein. Consequently, the molding material is forced by a molding stress provided by the applied magnetic force to move effectively downward in the accommodation space, such that a molded body is eventually formed in the accommodation space.