A removable fluid barrier comprises a generally planar flexible body fabricated of at least one resilient material and encapsulating a plurality of permanent magnets. The flexible body has an outer face defining a sealing surface of the removable fluid barrier.

The present invention relates to a rotomolded article, comprising at least one metallocene-catalyzed polyethylene resin comprising at least two metallocene-catalyzed polyethylene fractions A and B, wherein the polyethylene resin comprises: at least 25% to at most 55% by weight of polyethylene fraction A based on the total weight of the polyethylene resin, wherein fraction A has a melt index MI2 of at least 25.0 g/10 min as determined according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg, and a density at least 0.005 g/cm.sup.3 higher than the density of the polyethylene resin; and wherein the polyethylene resin has a density of at least 0.938 g/cm.sup.3 to at most 0.950 g/cm.sup.3 as measured according to ASTM D-1505 at 23° C.; a melt index MI2 of at least 1.0 g/10 min to at most 25.0 g/10 min as determined according to ISO 1133, condition D, at 190° C. and under a load of 2.16 kg.

The present invention also relates to a process for preparing said rotomolded article.

A removable fluid barrier comprises a generally planar flexible body fabricated of at least one resilient material and encapsulating a plurality of permanent magnets. The flexible body has an outer face defining a sealing surface of the removable fluid barrier.

A linerless composite tank for a waste or water system on board an aerospace vehicle includes a monolithic tank body having a first composite material co-cured with a second composite material. The first composite material includes a first resin and the second composite material includes a second resin that is different from the first resin. The first composite material forms an innermost surface of the monolithic tank body defining a tank chamber of the monolithic tank body. A method of manufacturing the linerless composite tank includes providing a mold having a desired interior shape of the monolithic tank, applying the first composite material to the mold, applying the second composite material to the mold, and co-curing the first composite material with the second composite material to form the monolithic composite tank.

A resin bath device for wet winding provided herein includes a resin stirring bath and a resin impregnation bath, where a bottom of a side wall of the resin stirring bath is connected to the resin impregnation bath, two ingredient baths are provided at two ends of the resin stirring bath, and a stirring mechanism is arranged inside the resin stirring bath. A resin dipping roller is mounted at a middle of the resin impregnation bath where a pressure roller is mounted at tops of side walls; an electric heating coil is arranged inside a bottom wall of the resin impregnation bath, and an electric heating rod is arranged at an axis of the pressure roller; and wire guide rollers are mounted at two ends of the side wall of the resin impregnation bath.

Provided herein are improved brine tanks comprising a brine tank lid with two parts for customizable identification, and a brine tank body with one or more indentations for easier removal of the brine tank lid.

A device for attaching a mouthpiece to an innerliner of an aircraft water tank is provided. A cylinder portion of an innerliner is thermally deformed to conform to an inner circumferential portion of a cylinder-like portion, and an inner circumferential portion of a dome portion of the innerliner is attached to a skirt portion by an adhesive. A lower mold includes two sections inserted inside the innerliner from the inner side of a mouthpiece in a folded state. The two sections are opened inside the innerliner and a holding member holds the two sections in an open state. The lower mold can be disposed in the innerliner sealed from the inner side of the mouthpiece, and abutment of an outer abutting surface of an upper mold against a first annular surface and abutment of an inner abutting surface of the lower mold against a second annular surface can be performed.

A container for storing liquids includes an inner layer including a storage space for storing liquids; an outer layer; and multiple spacers fastened between the inner layer and the outer layer to form multiple compartments. The spacer includes a first surface and a second surface. The first surface is secured to an adhesive layer of the inner layer. The first surface has many cavities. The second surface is secured to the outer layer and having projections complimentarily secured to the cavities. A manufacturing method of the container is also provided. Therefore, it can solve the problem permeation and adhesive failure caused by leaking. It can generate an early alarm by detecting any leaking or permeation of the container.

A composite container includes a barrel, a bottom cover, and a top cover. The barrel is formed by thermoforming of a rolled-up first plate composed of laminated prepregs. The bottom cover is formed by thermoforming of a second plate composed of laminated prepregs. The top cover is formed by thermoforming of a third plate composed of laminated prepregs. The bottom cover includes a first bottom and a first flange. The top cover includes a second bottom and a second flange. The second bottom is formed with a through hole. The bottom cover and the top cover are arranged at two ends of the barrel respectively, and the first flange and the second flange are positioned to the peripheral wall of the barrel by thermoforming.

The present disclosure provides a chemical container and a method for manufacturing the same. The chemical container comprises a head portion having a top wall and a head sidewall extending from an edge of the top wall, as well as a body portion jointed with the head portion and defining a chamber together with the head portion. The top wall has a mouth structure configured for one or more pipelines to pass through and connect with the chamber. The manufacturing method is simple and of low cost, and the resulted chemical container is able to withstand a greater internal pressure and is configured to collect any leaking liquid chemicals.