A method is provided for manufacturing. During this method, a first woven fiber sleeve is disposed over a first mandrel to provide a first overbraided mandrel. The first woven fiber sleeve is wrapped circumferentially around the first mandrel. An opening is formed through a side of the first woven fiber sleeve. A second woven fiber sleeve is disposed over a second mandrel to provide a second overbraided mandrel. The second woven fiber sleeve is wrapped circumferentially around the second mandrel. The second overbraided mandrel is arranged with the first overbraided mandrel. The second woven fiber sleeve engages the side of the first woven fiber sleeve. A second overbraid first end is disposed at and extends circumferentially around the opening. A polymer material is disposed with the first woven fiber sleeve and the second woven fiber sleeve to provide a duct structure.

Disclosed is a noise-absorbent fabric having a superior heat-insulation property and sound-insulating property and a method for manufacturing the same. The noise-absorbent fabric includes a noise-absorbing layer comprising a nonwoven fabric formed of a heat-resistant fiber and impregnated with a binder; and a metal film stacked thereon. As such, the noise-absorbent fabric having superior sound-absorbing property, heat-insulating property and sound-insulating property can be obtained and be applicable to parts maintained at high temperatures of 300 C. or greater. In addition, the noise-absorbent fabric can be moldable using the binder in a desired three-dimensional shape.

A method of forming a device having a compliant member includes providing an elastomeric layer in an uncured state. The elastomeric layer is pre-cured to increase its viscosity. Subsequently, a bobbin and housing, each having an end, can be positioned such that their ends extend at least partially into the elastomeric layer. The elastomeric layer is cured to secure it to the bobbin housing. Examples of pre-cure and cure operations include one or more of a thermal cure, evaporative cure and ultraviolet cure, and the application of moisture, microwave energy and chemical additive. Due to the increased viscosity after the pre-cure, the migration of elastomeric material is substantially reduced relative to an uncured elastomeric material. The reduction in elastomeric material migration results in smaller menisci formed along the walls of the housing and bobbin, and reduced thinning of the compliant member formed at their ends.

Polymeric layers (50) comprising an array of blind openings (56) extending into the first major surface (52, 10111, 11211), but not through the second major surfaces (54, 10112, 11212). The blind openings each have a series of areas through the openings from the first major surface towards the second major surfaces ranging from minimum to maximum areas, where for at least a majority of the blind openings the minimum area is not at the first major surface. At least a portion of the first major surface comprises a first material and extends up to, but not into the second major surface. At least a portion of the second major surface comprises a second, different material. Methods for making the polymeric layers are also disclosed. Polymeric layers are useful, for example, as components in personal care garments such as diapers and feminine hygiene products. They can also be useful for filtering (including liquid filtering) and acoustic applications.

An acoustic lens for an ultrasonic probe includes a vulcanization-molded article of a rubber composition including a first silicone rubber composition having a plasticity number of 100 or less, and a second silicone rubber composition having a plasticity number of 150 or more and 300 or less.

What is described is a method for manufacturing a profile element for sealing building-structure joints, especially for sealing against sound and smoke and optionally against fire, to an apparatus for manufacturing such a profile element and to the use of the profile element manufactured according to the invention for the acoustic, smokeproof and/or fireproof sealing of connecting joints in drywalls, especially of expansion joints. In particular, an improved method is described for continuous and endless manufacture of such a profile element.

An article at least comprising two components contacting with each other, in which at least part of a surface of at least one of the two components being plated, is provided, which is excellent in plating adhesion and impact resistance and thus is hard to be damaged on the plated surface and excellent in appearance even when one of the two components is brought into contact with the plated part of the other component, and is preferably suppressed in occurrence of unpleasant sounds such as squeaking noise. At least one of the two components of the article is formed of a thermoplastic resin composition (X) comprising a rubber-reinforced aromatic vinyl resin (A) in at least part of the portion that contacts the plated portion of the other component.

Provides is a waterproof sound-permeable membrane (10) adapted to permit passage of sound and prevent entry of water. The waterproof sound-permeable membrane (10) includes a sound-permeation region (11) having a polytetrafluoroethylene (PTFE) membrane (20). The polytetrafluoroethylene membrane (20) has an average pore diameter of 0.02 m or more and 0.1 m or less as measured according to ASTM F316-86 and has a porosity of 5% or more and 25% or less. The waterproof sound-permeable membrane (10) is suitable for application to an electronic device containing an acoustic device.

Disclosed is a noise-absorbent fabric having a superior heat-insulation property and sound-insulating property and a method for manufacturing the same. The noise-absorbent fabric includes a noise-absorbing layer comprising a nonwoven fabric formed of a heat-resistant fiber and impregnated with a binder; and a metal film stacked thereon. As such, the noise-absorbent fabric having superior sound-absorbing property, heat-insulating property and sound-insulating property can be obtained and be applicable to parts maintained at high temperatures of 300 C. or greater. In addition, the noise-absorbent fabric can be moldable using the binder in a desired three-dimensional shape.

A method of manufacturing a membrane for an electro-acoustic transducer through spray coating of a liquid elastomer solution is provided. The method includes spraying the liquid elastomer solution, which may comprise a silicone, onto a mold having the desired membrane geometry, allowing the solution to cure and remove the membrane from the mold. The mold can be configured to hold other components of an electro-acoustic transducer that will be attached to the membrane after the curing step. Also provided is a membrane for an electro-acoustic transducer comprised of an elastomer and made using spray coating of a liquid elastomer solution.