A method for production of a tubular body applying the following steps: Pressureless application of at least one first curable plastic layer made of reactive polyurethane materials with a core via a rotational molding process, Curing the at least one plastic layer, Winding at least one reinforcement layer onto the at least one first plastic layer, Pressureless application of at least one second curable plastic layer, wherein the reinforcement layer is embedded without holes between the two plastic layers, and Removal of the core after completion of the body. Because of this, the position of the reinforcement layer 7 can be individually established and it can be ensured that the reinforcement layer will not penetrate into the first plastic layer during winding after the curing of the first plastic layer.

A composite structure with an integrated hinge is disclosed. In various embodiments, the composite structure includes a plurality of layers of fiber reinforced polymer material; and a hinge structure comprising one or more layers of bendably flexible hinge material a first region of which is interleaved between adjacent layers of said layers of fiber reinforced polymer material comprising the composite structure and bonded to said adjacent layers by bonding material comprising said composite structure, and a second region of which extends beyond said layers of fiber reinforced polymer material comprising the composite structure.

The invention relates to the use of a structural adhesive film for bonding and sealing a hem flange connection between panels. The structural adhesive film comprises at least one adhesive layer and at least one layer with a porous structure. The adhesive layer comprise an epoxy compound as well as an epoxy curing agent.

A multilayered bullet resistant member, including a three-layered structure formed of a metal-ceramic crack arrest reflecting layer, a fiber-elastomer composite energy absorbing layer and a two-dimensional fabric blunt trauma protective layer sequentially overlapped with each other. The integration of performances of all the components guarantees high strength, hardness and good impact toughness of the bullet resistant member.

An optical mirror assembly includes a crystalline face sheet and a carbon fiber sandwich. The crystalline face sheet has a first surface configured to reflect light and a second surface coupled to the carbon fiber sandwich by a layer of epoxy. The carbon fiber sandwich is configured to structurally support the crystalline face sheet. The carbon fiber sandwich includes a first carbon fiber layer, a second carbon fiber layer and a substrate positioned between the first carbon fiber layer and the second carbon fiber layer.

Methods and systems for providing a user with content relevant to a location of interest to the user, when the user is determined to be at or near the location, are presented. The user's interest in the location may be determined based on queries about the location received from the user prior to the user arriving at the location. The queries received from the user about the location are used to build a location recommendation model, which generates personalized content relevant to the location and to one or more interest verticals identified for the user. The location recommendation model is built using a location recommendation engine that collects data about the user, the queried location, one or more associations between the user, the queried location, and/or one or more other users, as well as various other information related to the user's interests and the queried location.

A method to prepare a composite laminate object containing an extrusion grade 7xxx Al substrate and a fiber-reinforced polypropylene layer adhesively laminated to the substrate; is provided. The process includes shaping and cutting an extruded 7xxx aluminum to a profile, assembling a layered arrangement of the 7xxx Al profile as substrate, an adhesive film and a fiber reinforced polypropylene preform, heating the layered arrangement to a temperature of 160-175 C. to melt the polypropylene and activate the adhesive film, applying pressure to at least a surface of the fiber reinforced polypropylene preform to mold the preform to the shape of the extruded 7xxxAl substrate and obtain a semi-finished laminate object, cooling the semi-finished laminate object to 90 C., optionally, cooling the semi-finished laminate object to room temperature for inventory storage; heat treating the semi-finished laminate object at 90 C. for 2 to 8 hours; and then heat treating the semi-finished laminate object at 130 C. to 150 C. for 8 to 16 hours; and cooling the heat treated object to obtain the composite laminate object.

A decorative sheet includes a substrate and a surface protective layer formed on the substrate. A decorative plate is formed by laminating the decorative sheet on a base. The surface protective layer includes a first surface protective layer formed on the substrate and a second surface protective layer formed on part of the first surface protective layer. The first surface protective layer contains a curable resin and has a surface kinetic friction coefficient of 0.11 or more and 0.30 or less. The second surface protective layer contains at least one of resin beads and an inorganic compound filler. The first surface protective layer is glossier than the second surface protective layer.

A method for producing a fiber-reinforced composite material is provided. By satisfying particular conditions, this method is capable of suppressing the problem of poor appearance caused by the release film in the production of the fiber-reinforced composite material having a three-dimensional shape by heat-press molding to enable production of the fiber-reinforced composite material having a high quality appearance in high cycle. A method for manufacturing a fiber-reinforced composite material wherein a fiber-reinforced substrate containing a reinforcing fiber (A) and a thermosetting resin (B) is sandwiched between release films (C) to constitute a layered material, and the layered material is pressed in a mold heated to molding temperature to thereby cure the thermosetting resin (B), wherein the method satisfies the following (i), (ii), and (iii) or (i), (ii), and (iv): (i) the fiber-reinforced composite material has at least 1 bent part, (ii) the molding temperature is 130 to 180 C., and pressure application time is 0.5 to 20 minutes, (iii) the release film (C) has a thermal contraction rate satisfying the following expressions (1) and (2):
0<Ta20expression (1), and
1TaTb20expression (2), Ta: the thermal contraction rate (%) of the release film (C) measured by using a thermomechanical analyzer at the temperature the same as the molding temperature Tb: the thermal contraction rate (%) of the release film (C) measured by using a thermomechanical analyzer at a temperature 30 C. lower than the molding temperature, and (iv) hardness of the fiber-reinforced substrate and the hardness of the release film (C) measured by using a durometer corresponding to JIS-K-7215, type A satisfy the following expressions (3) and (4):
0.8Hrc/Hrf1.2expression (3),
1<Hhc/Hhf1.5expression (4), Hrc: hardness of the release film (C) at 30 C., Hrf: hardness of the fiber-reinforced substrate at 30 C., Hhc: hardness of the release film (C) at the molding temperature, Hhf: hardness of the fiber-reinforced substrate at the molding temperature.

An article comprises a carbon fibre reinforced plastic (CFRP) substrate, a buffer layer disposed adjacent the substrate, the buffer layer comprising a poly(para-xylylene) polymer; and a moisture barrier coating disposed adjacent the buffer layer.