A method for manufacturing a hollow body, typically a tank, from a plastic material. The method includes molding a preform into shells in a molding tool; joining an insert to an inner surface of a shell of said shells, the insert defining a sub volume within the hollow body to be made; joining together the shells to form the hollow body by closing the molding tool and applying a main pressure to a main volume enclosed by the shells. It is proposed to apply a sub pressure to the sub volume while applying the main pressure to the main volume, such that a pressure difference between the main volume and the sub volume is bigger than 0.20 bar (P1P2>0.20 bar) and smaller than 3.00 bar (P1P2<3.00 bar).

A method for manufacturing a fuel tank or filling pipe including a wall made of thermoplastics material and a fibrous reinforcement over at least part of the surface thereof, the method including: heating the fibrous reinforcement to bring the fibrous reinforcement into an at least partially molten state; introducing the heated fibrous reinforcement, and the wall in at least partially molten state, into a mold; and welding the fibrous reinforcement to the wall using pressure of a gas which inflates the wall and presses the heated fibrous reinforcement firmly against the wall in the molten state.

An object of the present invention is to provide a core member for a sandwich panel and a method of forming the core member for the sandwich panel which are capable of attaining a desired profile, a desired pattern on its surface, and a desired inner structure in accordance with an application of the sandwich panel. According to an aspect of the invention, there is provided a thermoplastic resin core member interposed between two resin skin sheets comprising a closed hollow portion located to be inside of a desired position in accordance with an application of the sandwiched panel, and it is formed by clamping parison of a molten thermoplastic resin positioned to be between two split molds so as to exhibit a desired profile and/or a surface shape, two surfaces against each of which the molten parison is pressed to form an adhesive surface on which the corresponding resin skin sheet is formed.

The present invention discloses an operating fluid container (10) made of thermoplastic material for a motor vehicle and a method for equipping an operating fluid container with a stiffening element (20). The operating fluid container (10) here has the following features: the operating fluid container (10) has a container opening (12) which is arranged in a container upper shell (11) and is edged by a surround (13); the operating fluid container (10) comprises a tubular stiffening element (20) arranged in the operating fluid container (10); on the end, the stiffening element (20) has a circumferential connecting edge (21) in contact with the container upper shell (11); in a plan view onto the container upper shell (11), the container opening (12) is surrounded by the connecting edge (21); the stiffening element (20) is integrally connected to a container lower shell (14) and by means of the connecting edge (21) to the container upper shell (11); and the stiffening element (20) counteracts deformation caused by the internal pressure of the operating fluid container (10).

A method of manufacturing an article comprises etching an etched feature on a surface of a first polymeric sheet, and forming a fluid-filled bladder element from the first polymeric sheet, with the fluid-filled bladder element having a sealable internal cavity that retains fluid. The method includes assembling the bladder element in the article so that a first portion of the bladder element having the etched feature is exposed to view, and a second portion of the bladder element is blocked from view by the article. An article includes the bladder element with the etched feature.

A container includes first and second shells sealingly engageable with each other. Each shell includes a rim, where the rim of each shell includes a rim bead having an inner wall and an outer wall. The inner wall and the outer wall of the rim bead of the second shell frictionally engage the inner wall and the outer wall, respectively, of the rim bead of the first shell to sealingly engage the rims. The container also includes hinge panels each extending outwardly from one of the rims of the first and second shells. The hinge panels are hingedly connected to each another along a hinge line to form a foldable section that includes the hinge panels and the hinge line. The foldable section has a frangible line formed on each of the hinge panels, where the frangible line extends transversely between the hinge panels and transects the hinge line.

A resin panel includes a first structure and a second structure stacked on each other. The structures includes reference surfaces that serve as the front surface and the back surface of the resin panel respectively. Each of the structures includes a plurality of protrusions protruding inwardly from the reference surface. The protrusions of the structure face the protrusions of the other structure each other. Jutting portions of linear shape are formed between adjacent protrusions of each of the structures. The structures are joined such that apical portions of the protrusions of each structure abut one another.

A process of manual, semi-automatic and fully-automated integration of discrete components into a container that results in fast, reliable, cost-effective, and scalable production of composite containers is disclosed. The process can be embodied in manufacturing equipment that has a series of stations and may be called an assembly device. The equipment can produce containers, tubs, canisters, cartridges, etc. which are easily separated into different bio-degradable or compostable parts. Other container types are possible and are contemplated.

The invention relates to a method for producing a container from thermoplastic material having a connection element (5) passing through the wall thereof. The method comprises making available at least one plate-shaped or shell-shaped or tube-shaped preform (3) made of plasticized thermoplastic material, introducing the preform (3) into a multipart molding tool (1) having cavities defining at least one molding recess, molding and final shaping of the preform (3) within the molding tool (1) using differential pressure, piercing of the still warm-plastic preform (3) from the tool side by means of a mandrel (9) in order to produce an opening (6) in the preform (3), insertion from the molding recess side of a connection element (5) into the opening (6) produced by the mandrel (9), and connection of the connection element (5) to the preform (3).

Disclosed is an apparatus for forming a plastic fuel tank for a vehicle, wherein when a parison is formed into semi-finished products having a shape of the fuel tank, the semi-finished products are formed by press forming using first and second molds and an intermediate mold. The semi-finished products are formed without using a blow molding process.