An imprinting method includes the steps of: adding a soluble material to a master mold; solidifying the soluble material to form a soluble mold; positioning an adhesive on a side of the soluble mold opposite to the master mold; attaching a taking device to the adhesive; removing the taking device from the master mold together with the soluble mold; positioning the soluble mold on a polymer layer; applying a first high temperature and a pressure to the soluble mold to form a transferred pattern corresponding to a convex-concave pattern of the soluble mold on the polymer layer and separate a support plate and a tape of the taking device; applying a second high temperature to the soluble mold to solidify the polymer layer; and dissolving the soluble mold by using a solvent to separate the solidified polymer layer and the support plate.

A mandrel structure for use in manufacturing a fiber reinforced resin vessel by a filament winding process, includes: a shaft having a pair of axial ends configured to be supported by a drive unit; a mandrel having the shaft passed therethrough; and a pair of fittings having the shaft passed therethrough and projecting axially from respective axial ends of the mandrel. The mandrel is formed as a hollow shell made of a water-soluble material, and includes a pair of shaft holes receiving the shaft therein, and a receiving recess formed in a part of the mandrel surrounding each shaft hole and configured to engage the corresponding fitting in a rotationally fast manner.

A material of thermoplastic fusible inner mold is provided, including: a high crystalline polymeric material and a lubricant material, the high crystalline polymeric material mixed with the lubricant material. An inner mold is further provided, made of the material of thermoplastic fusible inner mold described above. A method for manufacturing hollow part is further provided, including the following steps of: providing the inner mold; covering the inner mold with a part material; heating the inner mold which is covered with the part material to form the part material; and heating the inner mold covered with the part material which is formed at a predetermined temperature to melt the inner mold out of the part material which is formed to form the hollow part.

A material of thermoplastic fusible inner mold is provided, including: a high crystalline polymeric material and a lubricant material, the high crystalline polymeric material mixed with the lubricant material. An inner mold is further provided, made of the material of thermoplastic fusible inner mold described above. A method for manufacturing hollow part is further provided, including the following steps of: providing the inner mold; covering the inner mold with a part material; heating the inner mold which is covered with the part material to form the part material; and heating the inner mold covered with the part material which is formed at a predetermined temperature to melt the inner mold out of the part material which is formed to form the hollow part.

A disposable mold core for producing a fiber-reinforced component includes a support core having a granulate and a binder. The support core has a hard shell formed of the binder and the granulate, and an inner core which is binder-free and formed of the granulate. A related method of producing a fiber-reinforced component is disclosed.

A disposable mold core for producing a fiber-reinforced component includes a support core having a granulate and a binder. The support core has a hard shell formed of the binder and the granulate, and an inner core which is binder-free and formed of the granulate. A related method of producing a fiber-reinforced component is disclosed.

A method for manufacturing a panel includes disposing one or several supports in a respective cavity(ies) in a honeycomb structure having a first skin and a second skin clasping the honeycomb structure. The supports are made of a fugitive material such as a thermoplastic and are auxetic so that, under the effect of an increase in temperature, their dimension between the first and the second skins remains below a predetermined value.

A hybrid mandrel for forming a composite part may comprise a core and a sleeve located around the core. The core may include a rigid material. The sleeve may comprise an elastomeric material. The part may be formed by locating the hybrid mandrel in an injection mold, depositing a molten resin around the hybrid mandrel, curing the molten resin; and removing the hybrid mandrel.

A functional polymeric cutting edge structure and methods for manufacturing cutting edge structures using polymeric materials are provided. A razor blade for use in a razor cartridge or a blade box for assembly in a razor cartridge frame may be formed using the present invention.

Articles of manufacture such as ceramic cores and cast metal turbomachinery components are disclosed herein, as well as methods of preparing such articles of manufacture. The articles and methods of manufacture are directed to improving the production and performance of internal combustion engines.