A laminate is provided comprising at least one polysulfone and/or polyethersulfone porous membrane heat bonded to a polyvinylidene fluoride substrate.

An assembled mandrel for forming a hollow structure having a shape similar to that of the assembled mandrel, by layering a prepreg on the surface of the longitudinally oriented assembled mandrel, covering the same with a vacuum bag, heating while creating a vacuum inside the vacuum bag, and heat-curing the prepreg while pressing the same into the assembled mandrel, the assembled mandrel being characterized by being equipped with: two outer mandrel members (first mandrel members) extending in the longitudinal direction; a center mandrel member (second mandrel member) sandwiched between the two outer mandrel members, and capable of being withdrawn in the lengthwise direction from between the two outer mandrel members after the hollow structure has been formed; and a tape (detachable member) formed from a low-friction material and adhered to one or more of the contact surfaces between the two outer mandrel members and the center mandrel member.

An adhesive-distributing device for use in repairing or reconditioning a hollow profile includes an adapter body, in which is arranged at least one channel system made up of at least two channels connected to one another. At least one channel is connected to an injection opening for injecting adhesive into the channel system. Each channel is designed with at least one exit opening.

A method for manufacturing a three-dimensional object, the method comprises, a step of forming the three-dimensional object including a structure and a support body; a step of removing the support body from the three-dimensional object; wherein the step of forming the three-dimensional object comprising: a step of generating slice data of the three-dimensional object; a step of stacking a structural material constituting the structure and a support material constituting the support body based on the slice data; and the support material which is stacked based on the slice data has weakened parts dividing the support body into a plurality of parts.

Use of a semi-cristalline thermoplastic polyester for producing biaxially stretched hollow bodies, said polyester having at least one 1,4:3,6-dianhydrohexitol unit (A), at least one alicyclic diol unit (B) other than the 1,4:3,6-dianhydrohexitol units (A), and at least one terephthalic acid unit (C), wherein the molar ratio (A)/[(A)+(B)] is at least 0.05 and at most 0.30, said polyester being free of non-cyclic aliphatic diol units or comprising a molar amount of non-cyclic aliphatic diol units, relative to the totality of monomeric units in the polyester, of less than 5%, and with a reduced viscosity in solution (25 C.; phenol (50 wt. %): ortho-dichlorobenzene (50 wt. %); 5 g/L of polyester) greater than 50 mL/g.

A resin-infusion system for manufacture of a composite part includes an inflatable rigid bladder defining at least one infusion-flow medium and a preform lay-up formed on the bladder such that the infusion-flow medium defines space between the bladder and preform lay-up. The system also includes a mold into which the bladder and preform lay-up are placed such that the preform lay-up is constrained against the mold a resin injection system configured to feed resin into and to flow along the infusion-flow medium and then be infused into the preform lay-up. The bladder is configured to expand against the infused preform lay-up during curing such that the infusion-flow medium is smoothed resulting in a smooth surface of the finished part.

Polyolefin hollow articles prepared via a rotomolding process are provided flame retardancy by incorporating therein a phosphonate ester, an N-alkoxy hindered amine and melamine cyanurate.

Provided is a double container where an inner bag can be easily pulled out from an outer shell. According to the present invention, a double container comprising a container body and a mouth part attachment member is provided. The container body includes a mouth part and a body part and a bottom part. The mouth part is a tubular portion having an open end. The body part is arranged adjacent to the mouth part on a side farther from the open end than the mouth part, and has a larger outer diameter than the mouth part. The bottom part is configured to close a lower end of the body part. The container body includes an inner bag and an outer shell arranged to cover the inner bag. And the mouth part attachment member is configured to be attachable to the mouth part, and is configured such that the inner bag rotates as the mouth part attachment member rotates.

A method and apparatus is presented. A portion is cut from a thermoplastic sheet of a first thermoplastic material based on a three dimensional model. The portion is secured to a mold. The portion and the mold are heated under vacuum to form a structure. The structure may take the form of a protective covering. In some illustrative examples, the mold may be formed of a second thermoplastic material based on the three dimensional model using additive manufacturing.

The present disclosure discloses a device for biaxially-oriented stretching polytetrafluoroethylene hollow fiber membranes and the method thereof. The device may include a lubricant removing oven and a tube blank heating oven mounted at the outlet end of the push-compression mold, a core extension extending from the core into the lubricant removing oven and the tube blank heating oven, and a speed regulating guide wheel mounted at the outlet of the tube blank heating oven. A tube blank is extruded from a push-compression machine, inserted on the core extension for removal of lubricant in the lubricant removing oven, heated in the tube blank heating oven, transversely stretched by means of the bulked core, and then wound onto the speed regulating guide wheel for longitudinal stretching. Both transverse and longitudinal stretching can be realized for polytetrafluoroethylene tube blanks, overcoming disadvantages of traditional processing devices that can merely perform longitudinal stretching.