Patent classifications
B29K2995/0012
Mold tools with anisotropic thermal properties and aligned carbon-reinforced thermoplastic fibres
One embodiment is an apparatus including a mold configured to manufacture a composite structure at a heated temperature. The mold includes a first mold tool configured to mold a first portion of the composite structure, wherein the first mold tool comprises a plurality of strands of a fiber-reinforced thermoplastic material, wherein the fiber-reinforced thermoplastic material comprises a thermoplastic embedded with a plurality of reinforcement fibers, wherein the plurality of reinforcement fibers is aligned within each strand of the plurality of strands; and an anisotropic thermal expansion property, wherein the anisotropic thermal expansion property is based on an orientation of the plurality of reinforcement fibers within the first mold tool; and a second mold tool configured to mold a second portion of the composite structure.
Method for producing a molded body
The present invention relates to a method for producing a molded body (10), comprising the following steps: a) providing a molding tool (40) which has at least one receptacle (12) in which at least one material (30) which comprises at least one shape-memory material (31) is introduced, wherein the shape-memory material (31) is present in a first state (111), wherein the material (30) at least partially fills the receptacle (12) of the molding tool (40) in such a manner that said material adjoins at least one surface of the receptacle (12); b) creating a molded body (10) in the receptacle (12) of the molding tool (40) from the material (30), wherein the shape-memory material (31) is present in a second state (112), wherein a form (11) is embossed into the molded body (10) during the second state (112); c) transferring the shape-memory material (31) to a third state (113), wherein the molded body (10) can be deformed during the third state (113) in such a manner that the molded body (10) is demolded from the receptacle (12) of the molding tool (40); and d) at least partially restoring the form (11) of the molded body (10) by transferring the shape-memory material (31) to a fourth state (114), wherein the molded body (10) at least partially resumes the form (11) according to step b) during the fourth state (114).
SINGLE LAYERED GARMENT FABRIC
Various textile materials and method of manufacturing the same are provide. A method of single layer garment includes providing a single layer of textile material with low melt yarn. The method also includes forming the structure of the single layer of textile 5 material using selective heating to provide material support. The textile material are formed via at least one of a molding machine or a robotic hot air machine.
COMPOSITION, INJECTION MOLDED ARTICLE, AND MOLDING AUXILIARY AGENT
A composition containing a melt-moldable fluororesin having a 1% decomposition temperature of 300° C. or higher and a thermotropic liquid crystal polymer, 90 mol % or more of all repeating units of the thermotropic liquid crystal polymer having an aromatic structure. The fluororesin is contained in an amount of 99.99 to 97% by mass and the thermotropic liquid crystal polymer is contained in an amount of 0.01 to 3% by mass relative to the composition. Also disclosed is an injection-molded article and a molding aid for injection molding fluororesin.
CONVEYOR BELT
This invention relates to a conveyor belt comprising a composition comprising a) a (co)polyester A comprising hard segments comprising a polyester and having a melting temperature T.sub.mA of between 200° C. and 240° C. as measured according to ISO 11357-1/-3 (10° C./min), wherein the (co)polyester A is present in an amount of between 1 and 60 wt % with respect to the total weight of the composition; and b) a copolyester B comprising hard segments comprising a polyester wherein the (co)polyester B has a melting temperature T.sub.mB of between 100° C. and 180° C., as measured according to ISO 11357-1/-3 (10° C./min), wherein the copolyester B is present in an amount of between 40 and 99 wt % with respect to the total weight of the composition. The invention also relates to a process for preparing the conveyor belt.
Method and System for Resin Infusing a composite Preform
Resin infusing a composite preform includes placing a first vacuum bagging film over a tool surface and the composite preform to define a sealed first chamber. A bridge structure has an underside defining a cavity above the first vacuum bagging film. A second vacuum bagging film is placed over the first vacuum bagging film and the bridge structure to define a sealed second chamber. At least partial vacuum pressure is applied to the first chamber to drive resin from a resin supply through the first chamber, infusing the composite preform with resin. Partial vacuum pressure is applied inside the second chamber and an exterior pressure is applied outside the second vacuum bagging film while. The exterior pressure exceeds the pressure applied to the first and second chambers, thereby compacting the composite preform outside of a region, with the bridge supporting the second vacuum bagging film against the exterior pressure.
MOLDED ARTICLE AND METHOD OF PRODUCING SAME
A molded article includes a fiber-reinforced composite material in which reinforcing fibers are impregnated with a matrix resin, wherein components A, B, and C: Component A: a fiber-reinforced base material in which continuous reinforcing fibers are impregnated with a PPS resin is applied as the matrix resin, and a volume content of fiber Vf′.sub.A in the component A is Vf′.sub.A=50 to 70 vol %; Component B: a fiber-reinforced base material in which the continuous reinforcing fibers are impregnated with the matrix resin, the PPS resin and a PPS resin having a melting point Tm.sub.B lower than a melting point Tm.sub.A of the PPS resin are applied as the matrix resins, and a volume content of fiber Vf′.sub.B in the component B is Vf′.sub.B<Vf′.sub.A; and Component C: a fiber-reinforced resin obtained by impregnating discontinuous reinforcing fibers with the PPS resin is applied as the matrix resin.
Methods and apparatus for compensating for thermal expansion during additive manufacturing
Embodiments of the present disclosure are drawn to additive manufacturing apparatus and methods. An exemplary additive manufacturing method may include forming a part using additive manufacturing. The method may also include bringing the part to a first temperature, measuring the part along at least three axes at the first temperature, bringing the part to a second temperature, different than the first temperature, and measuring the part along the at least three axes at the second temperature. The method may further include comparing the size of the part at the first and second temperatures to calculate a coefficient of thermal expansion, generating a tool path that compensates for the coefficient of thermal expansion, bringing the part to the first temperature, and trimming the part while the part is at the first temperature using the tool path.
POLYALKYLENE TEREPHTHALATE RESIN COMPOSITION
Disclosed are: a polyalkylene terephthalate resin composition comprising (A) a polyalkylene terephthalate resin and (B) an acrylic-based core-shell polymer which has an average particle size of 2 μm or greater and in which an amount of the core layer component is more than 80% by mass but less than 100% by mass relative to a total mass of the core layer component and a shell layer component; and a molded article which is obtained by molding the polyalkylene terephthalate resin composition.
Methods of using thermoplastic polyurethanes in selective laser sintering and systems and articles thereof
The present invention relates to systems and methods for solid freeform fabrication, especially selective laser sintering, as well as various articles made using the same, where the systems and methods utilize certain thermoplastic polyurethanes which are particularly suited for such processing. The useful thermoplastic polyurethanes are derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component; wherein the resulting thermoplastic polyurethane has a melting enthalpy of at least 5.5J/g, a Tc (crystallization temperature) of more than 70° C., a Δ(Tm:Tc) of from 20 to 75 degrees, where Δ(Tm:Tc) is the difference between the Tm (melting temperature) and Tc.