A fiber blank woven as a single piece by three-dimensional weaving to make a closed box-structure platform out of composite material for a turbine engine fan. In each plane of the fiber blank, a set of warp yarns interlinks layers of weft yarns in first, second, and third portions of the fiber blank, while leaving a closed non-interlinked zone separating the first and second portions over a fraction of the dimension of the fiber blank in the warp direction between an upstream non-interlinking limit and a downstream non-interlinking limit, and while leaving at least one open non-interlinked zone separating the second and third portions over a fraction of the dimension of the fiber blank in the warp direction from a non-interlinking limit to a downstream edge of the fiber blank. A method of fabricating a preform for the closed box-structure platform can use such a fiber blank.

The present invention discloses a plastic rattan weaving structure, a rattan chair made with the structure and a method for forming a convex knot. The convex knot has a cross section that is greater than the middle cross section of the rattan piece used for making the rattan weaving structure. The rattan weaving structure has the convex knots on its edge. The rattan chair has a chair seat, a skeleton, an armrest and a base. The chair seat has the convex knots on its edge. The method for forming the convex knot comprises pressing and fixing the edge of the plastic rattan piece with a mold, setting up heating elements around the edge, heating the edge of the plastic rattan with the heating elements to cause shrinkage and accumulation of the rattan inside the mold, and finally formation of the convex knot.

The present invention discloses a plastic rattan weaving structure, a rattan chair made with the structure and a method for forming a convex knot. The convex knot has a cross section that is greater than the middle cross section of the rattan piece used for making the rattan weaving structure. The rattan weaving structure has the convex knots on its edge. The rattan chair has a chair seat, a skeleton, an armrest and a base. The chair seat has the convex knots on its edge. The method for forming the convex knot comprises pressing and fixing the edge of the plastic rattan piece with a mold, setting up heating elements around the edge, heating the edge of the plastic rattan with the heating elements to cause shrinkage and accumulation of the rattan inside the mold, and finally formation of the convex knot.

The invention relates to a method of fabricating a turbine engine blade out of composite material comprising fiber reinforcement densified by a matrix, the blade comprising an airfoil, a platform situated at a longitudinal end of the airfoil, and at least one functional element projecting from the outside face of the platform. The method comprises: making a single-piece fiber blank by multilayer weaving; shaping the fiber blank to obtain a single-piece fiber preform having a first portion (302) forming a preform for the blade airfoil (320) and a second portion (314) forming a preform for the platform (340) and at least one preform for a functional element (352; 354); and densifying the fiber preform with a matrix.

The second preform portion comprises a set of yarn layers interlinked by weaving with at least one zone of non-interlinking being provided to make it possible to deploy the functional element preform relative to the first platform preform.

A vane includes a fiber reinforcement having a three-dimensional weaving densified by a matrix, the fiber reinforcement including in a single woven part a root portion and an airfoil portion extending along a longitudinal direction between the root portion and a vane tip portion and along a transverse direction between a leading edge portion and a trailing edge portion. The airfoil portion includes first and second extrados and intrados faces. The fiber reinforcement includes a non-interlinking forming a housing inside the fiber reinforcement, a conformation part being present in the housing. The non-interlinking extends over a non-interlinked area inside the airfoil portion of the fiber reinforcement included between the root portion and the vane tip portion in the longitudinal direction and between the leading edge portion and the trailing edge portion in the transverse direction, the non-interlinking also opening outside the airfoil portion of the fiber reinforcement.

A fiber structure includes a first corner section, which is a boundary section between a first structural portion and a second structural portion, a second corner section, which is a boundary section between the first structural portion and a third structural portion, and a third corner section, which is a boundary section between the second structural portion and the third structural portion. A first yarn that extends continuously in the first structural portion and the second structural portion is bent at the first corner section. A second yarn that extends continuously in the first structural portion and the third structural portion is bent at the second corner section. At least one of the first yarn and the second yarn, which extend continuously in the second structural portion and third structural portion, is bent at the third corner section.

An interwoven structure is provided. The interwoven structure includes a plurality of adjacent sets of lateral elements comprised of a substantially non-flexible material extruded from a 3-D printer; a plurality of adjacent sets of transverse elements comprised of a material extruded from a 3-D printer and a plurality of adjacent sets of vertical elements comprised of a material extruded from a 3-D printer. The lateral, transverse, and vertical sets of elements are substantially mutually perpendicular to one coupled at a plurality of intersection nodes. The lateral, transverse and vertical sets of elements form an isotopically interwoven 3-dimensional weavement.

An apparatus and process of making the apparatus is provided in which consumer goods have applied thereto a substantially permanent amount of embedded diatomaceous earth. A portion of the diatomaceous earth is exposed on the surface of the consumer good and when encountered by an insect, will cause sufficient injury to the insect that the death of the insect results in a few days.

A fireproof, translucent, flexible coated fabric composite materials for use in fire curtains. The composite material meets or exceeds regulatory requirements in terms of fire endurance and allows transmissivity of necessary amounts of light. The process of the present disclosure combines a silica fabric with a special refractory index controlled resin. This unique combination of materials can transform an opaque high temperature fabric into a translucent, and even transparent, composite which as the ability to resist high temperature, flame and smoke penetration that fills a needed gap in technology between visibility and fire resistance in the field of fire and smoke curtains used in civil construction.

A fireproof, translucent, flexible coated fabric composite materials for use in fire curtains. The composite material meets or exceeds regulatory requirements in terms of fire endurance and allows transmissivity of necessary amounts of light. The process of the present disclosure combines a silica fabric with a special refractory index controlled resin. This unique combination of materials can transform an opaque high temperature fabric into a translucent, and even transparent, composite which as the ability to resist high temperature, flame and smoke penetration that fills a needed gap in technology between visibility and fire resistance in the field of fire and smoke curtains used in civil construction.