The present invention provides a structure that improves sound absorption coefficient. The present invention provides a structure comprising: a foam resin layer formed of a foam material having a foaming ratio of 1.1 to 8 times; and a sound absorbing layer formed of a foam material having a foaming ratio of 10 to 30 times, the sound absorbing layer laminated on the foam resin layer.

The invention includes a method of providing an intermediary layer in a laminated structure, between two adjacent layers, where the intermediary layer contains a fiber having an extrusion coating. The intermediary layer may form a textile constructed from the fibers, the intermediary layer, when the lamination method proceeds, provides the adhesion between the adjacent layers, as well as reinforcement for the laminated structure.

Described herein is a method for joining a first metal pipe with a second metal pipe, the pipes being joined together in an overlapping area by use of a two-component polyurethane adhesive that encapsulates the overlapping area, where the method includes the steps of:

(1) applying the two-component polyurethane adhesive onto an inner surface of a fixture;
(2) inserting one end of the first metal pipe into one end of the second metal pipe so as to form a pipe assembly having the overlapping area between the two ends, and putting the overlapping area of the pipe assembly into the fixture; (3) closing the fixture such that the overlapping area of the pipe assembly is fixed in the fixture, and such that the adhesive therein encapsulates the overlapping area of the pipe assembly; (4) curing the two-component polyurethane adhesive; and (5) optionally, removing the fixture from the pipe assembly.

A single layer/ply multi-use hose is contemplated. A thermoplastic polymer, such as polyurethane, is extruded through a woven tubular mesh of aramid fibers so as to encourage pillaring through gaps in the mesh of a sufficient amount to improve the overall durability and strength of the resultant hose. This wide diameter (at least 4 inches) and long continuous length (at least 300 feet) hose exhibits excellent durability (e.g., resistance to abrasion and/or punctures) and tensile ratios in excess of 2:1 so as to withstand tensile loads in excess of 100,000 pounds without delamination or bubbling within the hose wall.

A sleeve for the construction of a hose pipe extends about a longitudinal axis. The sleeve has greater elongation capacities in one direction than in the other with respect to the longitudinal axis.

A deployable Kiriform flexure includes first and second sections. The first section of the Kiriform flexure includes a plurality of curved fins arranged about a central axis. The second section of the Kiriform flexure includes a plurality of curved fins arranged about a central axis. Each fin of the second section is joined with a fin of the first section such that the first and second sections share a common central axis in a configuration that produces out-of-plane elastic buckling of the fins to actuate the Kiriform flexure from a substantially flat structure that extends substantially only in two dimensions orthogonal to the central axis to an expanded structure extending substantially in a third dimension parallel to the central axis when at least one of the first and second sections is rotated relative to the other section.

A fire extinguishing device is for a motor vehicle. The fire extinguishing device includes an internal cavity containing a pressurized fire extinguishing fluid. The cavity is delimited by a wall, the wall having at least one barrier layer (b) containing a semi-aromatic polyamide composition (B).

A fibrous material or composite including a plurality of layers joined to one another, for example, by needlepunching, is disclosed. The fibrous composite generally has an asymmetrical stretch profile, such that the fibrous composite is more extensible in the cross-machine direction than in the machine direction. The fibrous composite may find particular use in forming a cure-in-place pipe liner.

A breathable, multi-layer exhaust insulation system is provided. The system includes a multi-layer sleeve, wherein the first layer, which is positioned adjacent the exhaust system pipes, is a braided sleeve which may be constructed from high-temperature resistant materials such as e-glass, s-glass, silica or ceramic. Additional braided layers of material may be included, as well. An outside cover of material is preferably a circular knitted fabric that contains glass fibers and resin-based fibers. The knitted fabric forms a tube on the outside of the insulating layers, and may be formed from a core spun yarn, which includes a glass filament core and a high-melt fiber on the wrap. Optionally, the system may also include a perforated or unperforated metal foil layer and/or a tape wrap, and the various components may be configured as desired.

A laminate tube with an invisible longitudinal overlapped side seam formed from overlap welding an edge of one margin of a laminate sheet comprising an outer plastic layer (A), a barrier layer (B), and an inner plastic layer (C) of the same material type as the outer plastic layer (A) to the other edge of the opposite margin of the laminate sheet, such that an inner surface of the laminate tube has a hump in a overlapped region, while an outer surface of the laminate tube is smooth without a hump in the overlapped region; and a process for manufacturing the laminate tube by a laminate tube manufacturing machine. The laminate permits fracture-proof welding of longitudinal margins of said laminate to give a continuous tube which is suitable for manufacturing of high-quality plastic tubes, high-quality plastic bags and the like.