B29K2105/0079

Method for producing molded foam articles, and molded foam articles

A method for producing molded foam articles that molds molded foam articles continuously, the method comprising continuously repeating the following step 1, step 2, step 3 and step 4 in this order; wherein step 1 comprises melting a resin composition that includes a liquid crystal polyester; step 2 comprises introducing, with an introduction device, a supercritical fluid that is unreactive, in a supercritical state, with the liquid crystal polyester, and is a gas at normal temperature and normal pressure, into the resin composition in an amount of at least 0.1 parts by mass but not more than 0.3 parts by mass per 100 parts by mass of the liquid crystal polyester, and then melt-kneading the resultant mixture; step 3 comprises injecting the melt-kneaded resin composition containing the supercritical fluid into a mold; and step 4 comprises conducting foaming by lowering at least one of the pressure and the temperature of the supercritical fluid contained in the resin composition to a value below the critical point of the supercritical fluid, thereby producing a molded foam article. This liquid crystal polyester has a melt tension at a temperature 20° C. higher than the flow start temperature of at least 5 mN but not more than 100 mN.

Stereolithography additive manufacturing of magnetically aligned liquid crystal elastomers

A method of forming a three-dimensional structure includes forming a layer of resin comprising liquid crystal oligomers and a photoinitiator, applying a magnetic field to the formed layer in a predefined alignment direction for substantially aligning the liquid crystal oligomers in a first orientation; and exposing the formed layer to radiation for curing a first portion of the layer during application of the magnetic field thereby resulting in the first portion having liquid crystal elastomers substantially aligned in the first orientation. The method includes applying a second magnetic field to the formed layer in a predefined second alignment direction for substantially aligning uncured liquid crystal oligomers in a second orientation, and exposing the layer to radiation for curing a second portion of the layer during application of the second magnetic field thereby resulting in the second portion having liquid crystal elastomers substantially aligned in the second orientation.

Stereolithography additive manufacturing of photoaligned liquid crystal elastomers

A method of forming a three-dimensional structure of liquid crystal (LC) elastomers includes contacting a resin layer of LC oligomers with a layer of photoalignment material, and exposing a portion of photoalignment material to light for aligning the portion of photoalignment material in a first orientation. The LC oligomers adjacent the illuminated portion of photoalignment material align to the first orientation of the illuminated portion. The portion of aligned LC oligomers of the resin layer are cured. Operations for forming additional layers include creating a relative movement of the resin layer away from the photoalignment material, contacting another resin layer with the photoalignment material, and exposing another portion of photoalignment material to light for aligning the photoalignment material in a different orientation. The LC oligomers adjacent the illuminated portion of photoalignment material align to the different orientation, and the portion of aligned LC oligomers of the resin layer are cured.

Liquid crystal polyester resin for laminate, liquid crystal polyester resin composition, laminate, and liquid crystal polyester resin film

A liquid crystal polyester resin for laminate, wherein, in a molecular weight distribution of an absolute molecular weight measured by a gel permeation chromatograph/light scattering method, an area fraction of a portion having an absolute molecular weight of 10,000 or less is 10 to 40%, and an area fraction of a portion having an absolute molecular weight of 50,000 or more is 3 to 20%, relative to 100% of the total peak area.

THREE-DIMENSIONAL (3D) PRINTING OF ELECTRO-ACTIVE LENSES

A method of manufacturing an optic includes disposing electronic circuitry on a substrate. The method also includes depositing a first resin on the first side of the electronic circuitry and curing the first resin to form a first optical segment. The method further includes depositing a second resin on the second side of the electronic circuitry and curing the second resin to form a second optical segment. The first and second optical segments encapsulate the electronic circuitry. The first resin and the second resin can include multiple droplets of resin, thereby reducing mechanical force imposed on the electronic circuitry during printing and allowing conformal contact between the resin and the electronic circuitry. Accordingly, electronic circuitry of smaller dimension can be used to form the electronic eyewear.

Liquid-crystalline resin composition and molded article

A liquid-crystalline resin composition is provided, containing: a liquid-crystalline resin; and a fibrous filler formed of crystalline polysaccharides, in which a 5% weight loss temperature of the fibrous filler is 280° C. or higher.

LIQUID CRYSTAL POLYESTER RESIN COMPOSITION AND MOLDED OBJECT
20220282086 · 2022-09-08 ·

A liquid crystal polyester resin composition includes resin pellets including a first liquid crystal polyester resin and a fibrous filler, a second liquid crystal polyester resin, and a metal salt of higher fatty acid, in which the second liquid crystal polyester resin has a lower flow starting temperature than the resin pellets, flow starting temperatures of the resin pellets and the second liquid crystal polyester resin are both 250° C. or higher, and a difference in the flow starting temperatures between the resin pellets and the second liquid crystal polyester resin is more than 10° C.

INJECTION MOLDED PRODUCT
20220288823 · 2022-09-15 ·

The present invention relates to an injection molded product including a thermoplastic resin and a fibrous filler, wherein the thermoplastic resin includes at least 10% by mass of at least one selected from the group consisting of polypropylene and liquid crystal polyesters based on the total amount of the thermoplastic resin, the proportion of the fibrous filler having a fiber length of 1 mm or less in the injection molded product is 40% by mass or less based on the total amount of the fibrous filler, and a vertical-horizontal plane area of a test piece after ashing, which is determined by a specific ashing test, is at least 3.5 times the vertical-horizontal plane area of the test piece before ashing.

METHOD FOR MANUFACTURING WELDED MOLDING, WELDED MOLDING, AND PIPE
20220243844 · 2022-08-04 ·

A method for manufacturing a welded molding made of liquid crystal polyester as a formation material is provided, the method including: a step of heating each of a first ridge portion of a first member made of the liquid crystal polyester as a formation material and a second ridge portion of a second member made of the liquid crystal polyester as a formation material to a temperature equal to or higher than a flow start temperature of the liquid crystal polyester; and a step of abutting the first ridge portion and the second ridge portion to each other to perform vibration welding while pressing the first ridge portion and the second ridge portion in a direction in which the first ridge portion and the second ridge portion are brought relatively close to each other.

LIQUID CRYSTAL FILM FOR THREE-DIMENSIONAL MOLDING, THREE-DIMENSIONAL MOLDED BODY, AND METHOD OF MANUFACTURING THREE-DIMENSIONAL MOLDED BODY
20220288827 · 2022-09-15 · ·

According to the present invention, provided are a liquid crystal film for three-dimensional molding from which a three-dimensional molded body which is excellent in reproducibility of image light can be obtained during image light irradiation, a three-dimensional molded body, and a method of manufacturing the three-dimensional molded body. A liquid crystal film for three-dimensional molding includes: a substrate; and a functional layer, the functional layer includes a liquid crystal layer, the liquid crystal layer is made from a liquid crystal composition, and a rubbing haze variation of an outermost surface of the functional layer is 0.80% or less.