A twin screw extruder (10) according to the present invention is a twin screw extruder (10), in which a reinforcing fiber is fed through an input port (18) into a molten thermoplastic resin having been formed in a resin feed part (13) and the reinforcing fiber and the molten thermoplastic resin pass through a kneading part (15) so that a fiber-reinforced resin composition is manufactured, wherein the kneading part (15) is provided at the discharge-side end part of the extruder (10); a conveying part (14) is provided between the input port (18) and the kneading part (15), and tip clearance (Sc) of a screw element (12b) configuring the conveying part (14) is larger than screw clearance (Ss).

Solid polymer objects have size at least 0.5 mm in each of three orthogonal dimensions and shape such that each object has one or more edges, points or corners and/or has a plurality of projections which extend out from a core portion. Such objects may be included in a drilling fluid as a lost circulation additive intended to bridge fractures and mitigate fluid loss. Their angular shape features make it harder for them to slide over fracture faces or each other and helps them to bridge a fracture. A method of making these objects provides a travelling endless belt made of elastomer and defining mould cavities. The mould cavities are filled with a polyerisable liquid composition, which is cured in the mould as the belt advances, and the cured objects are ejected from a mould as the belt bends around a roller.

A system for processing elastomeric load rings may include an elastomeric load ring defining an initial width. The system may also include a fixture assembly configured to receive the load ring between first and second clamp members. The second clamp member may be spaced apart from the first clamp member such that a gap is defined between the clamp members when the load ring defines the initial width. The fixture assembly may also include a load member configured to apply a compressive load through the first clamp member and/or the second clamp member such that the load ring is compressed between the clamp members. When the load ring is heated, a spring force of the load ring may be reduced as the load ring is compressed between the clamp members such that the initial width of the load ring is reduced to a final width.

A reinforcing mesh element for embedding in a cement matrix of a building structure, preferably in a corner region or in a curved region. The reinforcing mesh element has a grid-shaped arrangement of fiber bundles that are embedded in a plastic matrix. The reinforcing mesh element has at least one rigid zone and at least one flexible zone. In the at least one flexible zone the plastic matrix consists of an elastomer plastic. The plastic matrix comprises in the at least one rigid zone a thermoset plastic. The flexible or rigid form of the reinforcing mesh element is thus obtained, due to the set-up of the plastic matrix. Additional stiffening bodies or stiffening elements that are connected with the grid-shaped arrangement can be omitted. The reinforcing mesh element can be adapted to the respective situation and simplifies handling when manufacturing a building structure.

This invention generally relates to polyethylene or ethylene/?-olefin copolymer based co-extruded, multi-layer films or sheetsrigid or flexiblefor thermoforming into shaped containers such as packaging containers. Inter alia, the rigid films have improved barrier properties, toughness, and snapability. Particularly, the films of the present invention comprise one or more stacks of polypropylene layers. In one embodiment, the polypropylene layers in the stack are provided such that any two adjacent layers have different microstructures that provide a interface or interphase between the two layers with likely different microstructures and/or crystallinity. The overall polypropylene stack structure assists in disrupting the transport of oxygen, thereby providing a laminate or structure, for example a rigid film or sheet, with enhanced oxygen-barrier properties. The invention also relates a process for preparing shaped articles such as containers from such films, and to such shaped articlesrigid or flexibleboth filled and unfilled.

A polyester resin composition including: 30 to 55 parts by mass of a polybutylene terephthalate resin (A), 8 to 38 parts by mass of a polyethylene terephthalate resin (B), 3 to 20 parts by mass of a copolymerized polyester resin (C), 0 to 8 parts by mass of a polycarbonate-based resin (D), and 4 to 23 parts by mass of a carbon fiber-based reinforcement (E), and 0 to 2 parts by mass of an transesterification inhibitor (F) with respect to 100 parts by mass of a total amount of (A), (B), (C), (D), and (E), wherein (C) is a copolymerized polyethylene terephthalate resin (C1) and/or a copolymerized polybutylene terephthalate resin (C2). The polyester resin composition has a flexural modulus of 5.8 GPa or more, and a molded article formed of the polyester resin composition is highly rigid, has reduced defects, and may be decorated by hot-stamping.

The purpose of the present invention is to provide a sandwich structure that achieves both excellent heat radiation and excellent mechanical characteristics. To this end, the sandwich structure according to the present invention has the following configuration. That is, the sandwich structure has a core material (I) and fiber-reinforced materials (II) arranged on both surfaces of the core material (I), wherein at least one of the fiber-reinforced materials (II) includes a sheet-shaped heat conduction material (III) having an in-plane heat conduction ratio of 300 W/m.Math.K or more.

A synthetic bone graft is described which is adapted to be received within a bone defect and which is structurally load-bearing. The bone graft comprises an entirely synthetic graft body corresponding in shape and size to the bone defect. The graft body is composed of a plurality of superimposed multilayered structures, each of the multilayered structures having a biopolymer layer joined to a biomineral layer to define an interface therebetween. The biomineral layer has a stiffness that is greater than that of the biopolymer layer, and the biopolymer layer has a toughness that is less than that of the biomineral layer.

A consumable assembly for use with an additive manufacturing system to print three-dimensional parts, the consumable assembly including a supply device (e.g., a spool) and a filament supported by the supply device, where the filament has a composition comprising one or more elastomers and one or more reinforcing additives, and a filament geometry configured to be received by a liquefier assembly of the additive manufacturing system. The composition is preferably configured to be thermally and/or chemically modified to reduce its flexural modulus.

A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.