A composition containing a semicrystalline poly(2,6-dimethyl-1,4-phenylene ether) having a glass transition temperature of 205 to 225 C. can be compression molded under conditions that include a molding temperature substantially below the glass transition temperature. In some cases, the crystallinity of the poly(2,6-dimethyl-1,4-phenylene ether) increases substantially during molding, even though the molding temperature is below the glass transition temperature. Also described are articles formed by the molding method, articles in which the poly(2,6-dimethyl-1,4-phenylene ether) has a crystallinity of at least 5 weight percent, and a method of increasing the crystallinity of poly(2,6-dimethyl-1,4-phenylene ether).

A method for printing a three-dimensional part with an additive manufacturing system, which includes providing a part material that compositionally has one or more semi-crystalline polymers and one or more secondary materials that are configured to retard crystallization of the one or more semi-crystalline polymers, where the one or more secondary materials are substantially miscible with the one or more semi-crystalline polymers. The method also includes melting the part material in the additive manufacturing system, forming at least a portion of a layer of the three-dimensional part from the melted part material in a build environment, and maintaining the build environment at an annealing temperature that is between a glass transition temperature of the part material and a cold crystallization temperature of the part material.

A polymeric material includes a semi-crystalline polymer and a secondary material wherein when the secondary material is combined with the semi-crystalline polymer to form a blend having at least a 3 C. reduction in a hot crystallization temperature relative to the neat semi-crystalline polymer.

A crystallized bioabsorbable polymer scaffold comprises a polymer composition of poly (L-lactide-co-tri-methylene-carbonate) or poly (D-lactide-co-tri-methylene-carbonate) or poly (L-lactide-co-?-caprolactone) or poly (D-lactide-co-?-caprolactone) in the form of block copolymers of blocky copolymers, wherein the scaffold is cold-bendable. A crystallized bioabsorbable polymer scaffold comprising a polymer composition of poly (L-lactide-co-tri-methylene-carbonate) or poly (D-lactide-co-tri-methylene-carbonate) or poly (L-lactide-co-?-caprolactone) or poly (D-lactide-co-?-caprolactone) in the form of block copolymers of blocky copolymers, wherein the scaffold crystallizes in response to orthogonal strain.

Methods for producing spatial objects are disclosed. The methods generally include printing a spatial object, in an amorphous phase, using a three-dimensional (3D) printer and a printing material that consists essentially of polyaryletherketones. The methods further entail placing the spatial object in a container and submerging the spatial object in a suitable charging material. Next, vibrations are applied to the container that includes the spatial object and charging material. The container, charging material, and spatial object are then heated until the spatial object transitions into a semi-crystalline phase (at which point the spatial object can be removed from the container and charging material).

Methods and processes are provided by which inhibited-crystallization polymers may be employed as feedstock materials in thermoplastic extrusion-type additive manufacturing systems. Counteracting the tendency of such polymers to uncontrolledly settle into an amorphous state upon cooling under typically used conditions, techniques are disclosed for controlling process temperatures, exposure times and feed rates to produce parts with uniform crystallinity, high mechanical strength and efficient throughput.

A method of making carbon fiber material according to various embodiments of the present disclosure includes forming a polymer resin to have a polydispersity index (PDI) that is less than approximately 2.5. The method further includes spinning the polymer resin to create an acrylic fiber having an acrylic fiber length. The method further includes oxidizing the acrylic fiber while stretching the acrylic fiber to create an oxidized fiber that has an oxidized fiber length that is at least one of greater than or equal to approximately 100 percent (100%) of the acrylic fiber length. The method further includes carbonizing the oxidized fiber to create a carbon fiber.

A laser processing apparatus capable of imparting heat sealing properties to a biaxially stretched polyester film through a method having high efficiency and high safety. The laser processing apparatus includes a laser oscillator, where a film formed of a single layer of a biaxially stretched polyester or a laminate containing a layer of a biaxially stretched polyester on the surface is irradiated with laser light emitted from the laser oscillator, to impart heat sealing properties to a region of the film irradiated with the laser light. The laser processing apparatus may include an optical element which shapes a spot profile of the laser light into a predetermined profile, and may also include a film mounting part which mounts the film.

Formable films are provided that include one or more biaxially-oriented polyethylene terephthalate layers. The formable films include a metaphase with a metaphase transition of about 180 C. to 200 C. as measured by differential scanning calorimetry (DSC). The formable films further include a molded volume of greater than 200%. Laminate structures including the formable films and processes for producing and using the formable films and laminate structures are also provided.

A wide-neck synthetic resin container has a neck, a body and a bottom. A top side of the neck is sealed by a cap. The neck includes a neck tubular section, an engagement section protruding outward therefrom and engaging the cap, and a flange protruding outward at the top side. The flange protrudes less than the engagement section. The neck's top side includes a first top side formed by the neck tubular section, and a second top side formed by the flange that is the same height level with the first top side and increases an area of the top side. The neck tubular section has a uniform thickness at an area immediately below the flange and an area where the engagement section is formed. A thickness of the flange is smaller than that of the neck tubular section, and the neck has been crystallized.