Patent classifications
B29C39/40
Controlling the formation of imperfections due to polymeric shrinkage during molding operations
Particular embodiments of the invention include apparatus and methods for compensating for shrinkage of a polymeric material in a mold during curing operations. Embodiments of the method include providing a mold comprising a molding cavity defining an interior mold volume separated from an exterior environment and introducing a volume of polymeric material into the molding cavity. Such methods further include impeding the development of a void in the volume of polymeric material by, either: isolating the volume of polymeric material within the molding cavity from the exterior environment, or reducing the interior mold volume of the molding cavity to at least substantially consume a volume of polymeric material shrinkage. Such methods further include curing the polymeric material to form a molded polymeric form.
Controlling the formation of imperfections due to polymeric shrinkage during molding operations
Particular embodiments of the invention include apparatus and methods for compensating for shrinkage of a polymeric material in a mold during curing operations. Embodiments of the method include providing a mold comprising a molding cavity defining an interior mold volume separated from an exterior environment and introducing a volume of polymeric material into the molding cavity. Such methods further include impeding the development of a void in the volume of polymeric material by, either: isolating the volume of polymeric material within the molding cavity from the exterior environment, or reducing the interior mold volume of the molding cavity to at least substantially consume a volume of polymeric material shrinkage. Such methods further include curing the polymeric material to form a molded polymeric form.
METHOD FOR PRODUCING LARGE POLYMERISED DENTAL MATERIAL BLOCKS
Methods produce a three-dimensional dental block of material from a dental, polymerizable material. The methods include at least: transferring the polymerizable dental material into a radiolucent three-dimensional casting or press mold; irradiating the polymerizable dental material substantially from all sides with light in the UV/Ms spectral region forming polymerized outer surfaces of the dental material in the form of a solid outer shell of the dental material, wherein the shell is present in the defined three-dimensional geometry of the material whilst the inner region of the material is not polymerized or partially polymerized; heating the material with solid shell being present in defined three-dimensional geometry, to 60 C. to 150 C. for at least 90 minutes; and obtaining a dental, polymerized block of material having defined three-dimensional geometry.
METHOD FOR MANUFACTURING COOLING DEVICE AND MOTOR HOUSING COOLING DEVICE USING SAME
Provided is a method for manufacturing a cooling device and a motor housing cooling device manufactured using same, the method including the steps of: making a cooling pipe and forming the cooling pipe to a shape capable of being buried in a housing body; filling the cooling pipe with a support material; making a portion divided from the housing body as a jig body so as to support the cooling pipe against the jib body in an injection mold of the housing body; locating the cooling pipe in the injection mold of the housing body in such a manner as to be supported against the jig body and injection-molding the housing body; and after the injection molding, removing the support material from the cooling pipe.
Method for Producing Vehicle Replacement Parts
A method produces a vehicle replacement part for a first vehicle component of a connecting system, which is fixed to a second vehicle component via a detachable clip connection. The first vehicle component has a male fixing element, and the second vehicle component has a female fixing element. To connect the first vehicle component to the second vehicle component, the male fixing element is plugged into the female fixing element and is latched. The production method of the vehicle replacement part provides an unfinished part, which is dimensioned to produce the vehicle replacement part. Then, the unfinished part is reshaped in accordance with the geometry of the first vehicle component. Male fixing elements are then provided and, in the last step, the male fixing elements are joined to the reshaped unfinished part.
Method for Producing Vehicle Replacement Parts
A method produces a vehicle replacement part for a first vehicle component of a connecting system, which is fixed to a second vehicle component via a detachable clip connection. The first vehicle component has a male fixing element, and the second vehicle component has a female fixing element. To connect the first vehicle component to the second vehicle component, the male fixing element is plugged into the female fixing element and is latched. The production method of the vehicle replacement part provides an unfinished part, which is dimensioned to produce the vehicle replacement part. Then, the unfinished part is reshaped in accordance with the geometry of the first vehicle component. Male fixing elements are then provided and, in the last step, the male fixing elements are joined to the reshaped unfinished part.
Method and Device for Manufacturing Microneedle Elements and a Microneedle Element
A method for manufacturing a microneedle element, including the following steps: providing a mold element for the microneedle elements to be manufactured, filling the mold element with a first formulation, curing the first formulation, and pressurizing the first formulation during curing. Furthermore, a microneedle element and a device for manufacturing a microneedle element.
THE INJECTION GATE APPLICATION OF PLASTIC MATERIAL
Various examples provide a mold including a molding component and a supplementary component. The molding component may have a cavity, to enable a molten material to fill into the molding component to form an object. The supplementary component may include a bypass having a first opening located at a first position of the molding component and a second opening located at a second position of the molding component. The molten material may flow from the first position to the second position via the molding component, flow from the first opening to the second opening via the bypass and fill into the second position of the molding component through the second opening.
THE INJECTION GATE APPLICATION OF PLASTIC MATERIAL
Various examples provide a mold including a molding component and a supplementary component. The molding component may have a cavity, to enable a molten material to fill into the molding component to form an object. The supplementary component may include a bypass having a first opening located at a first position of the molding component and a second opening located at a second position of the molding component. The molten material may flow from the first position to the second position via the molding component, flow from the first opening to the second opening via the bypass and fill into the second position of the molding component through the second opening.
Plastic lens manufacturing method
An aspect or the present invention relates to a method of manufacturing a plastic lens, which comprises casting a plastic lens starting material liquid into a cavity in a forming mold and conducting a polymerization reaction of the plastic starting material liquid within the cavity to provide a molded article. The forming mold is one in which two molds are disposed opposite each other, a gasket made of an elastic resin is disposed around the two molds to form the cavity, and at least one of the two molds is made of an elastic resin, one surface of the molded article is a convex surface and the other surface of the molded article is a concave surface, and the concave surface is formed by transferring a molding surface of the mold made of elastic resin.