A process for manufacturing an apron board of a high-speed rail equipment cabin using a composite material is disclosed. The material includes aramid fiber honeycomb, PET foam, 3K twill carbon fiber flame retardant prepreg, unidirectional carbon fiber flame retardant prepreg, glass fiber flame retardant prepreg, aramid flame retardant prepreg, and 300 g/m.sup.2 single component medium temperature curing blue epoxy adhesive. The process includes manufacturing an apron main plate (3); manufacturing apron-board trim strips (1, 2), wherein there are two apron-board trim strips (1) and two apron-board trim strips (2); and obtaining the apron board through the apron main plate (3) and the apron-board trim strips (1, 2), wherein the two apron-board trim strips (1) are respectively stuck at two opposite sides of the apron main plate (3), the two apron-board trim strips (2) are respectively stuck at another two opposite sides of the apron main plate (3).

A method of fastening an edge structure to a construction element includes providing the construction element, being a planar structure with with two cover regions and a middle region between the cover regions; providing the edge structure being continuously extended, the edge structure having contact surfaces with a thermoplastic material shaped to lie against the cover regions in an outer surface of the construction element, and, opposite the contact surfaces, a coupling-in surface for coupling energy into the edge structure; coupling energy into the edge structure and pressing the contact surfaces against the cover regions until at least a portion of the thermoplastic material is liquefied and pressed into the cover regions; and repeating or continuing the steps of coupling and pressing until the edge structure is attached to the building element at a plurality of discrete locations or over an extended region along an edge of the construction element.

A process for manufacturing a base board of a high-speed rail equipment cabin using a composite material is disclosed. The composite material includes: aramid honeycomb, PET foam, 3K twill carbon fiber flame retardant prepreg, unidirectional carbon fiber flame retardant prepreg, glass fiber flame retardant prepreg, aramid flame retardant prepreg, and 300 g/cm.sup.2 single component medium temperature curing blue epoxy adhesive. The process includes manufacturing a base-board main plate (1), a base-board handle (2) and two base-board sliders (3). While installation, the base-board handle (2) is stuck to one side of the base-board main plate (1), and the two base-board sliders (3) are respectively stuck to another two opposite sides of the base-board main plate (1). The weight of the base board made from the composite material is 35%-40% lower than the base board made from the aluminum alloy material, which leads to a good prospect of application.

Provided herein are methods for using hempcrete. In some instances, the present disclosure provides methods for 3D printing hempcrete. The 3D printed hempcrete may be printed in tandem with other materials, including hemp-based plastics. Hempcrete formulation may be 3D printed to form a building scaffolding.

The present invention sufficiently heats a repairing material while preventing change in quality of a base material provided with the repairing material so as to securely bond the repairing material to a repair target portion. The repair method of the present invention, in order to repair a repair target portion 14 existing in an outer panel 1, includes: a repairing material disposing step of disposing a repairing patch 21 including a resistance heating element 23 and a carbon fiber reinforced resin, and an adhesive 22A including a thermosetting resin before being hardened for bonding the repairing patch 21 on the repair target portion 14; and a heating-hardening step of heating and hardening the thermosetting resin of the adhesive 22A by causing the resistance heating element 23 to generate heat through supply of electricity thereto.

An insulated door panel comprises a shell having spaced first and second exterior panels and frame members adjacent edges of the panels, a plurality of stiffeners in a shell interior portion extending along a length or width of the panels, and a hardenable insulation material creating a bond between the exterior panels, stiffeners, and frame members in the shell interior portion. The stiffeners comprise a thermally non-conductive fiber reinforced polymer. The hardenable insulation fills substantially all of the space between the adjacent exterior panels, stiffeners, and frame members. The door panel also comprises end cap members composed of thermoplastic polycarbonate material, and has openings therein to receive the ends of the stiffeners.

A method of manufacturing a composite core can include: wrapping a mandrel in a mandrel wrapping process by securing a mandrel with a winding jig; orienting the composite material at a wrap angle to the mandrel; and depositing the composite material around a circumference of the mandrel. The method can further include assembling the wrapped mandrels in a tool and applying a pressure to the composite material during a curing cycle.

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 polygonal part (1) has, on each side (C1 to C6), at least one of the following assembly elements: at least one lug (3), at least one recess (4), each of said lugs (3) and each of said recesses (4) of the part (1) having a trapezoidal shape, with in each case complementary shapes, the trapezium of each of said lugs (3) widening towards the outside of the part (1) and the trapezium of each of said recesses (4) widening towards the inside of the part (1), and each of said lugs (3) having a width, defined transversely with respect to a right bisector of the corresponding trapezium, which is greater than the width of each of said recesses (4).

This invention relates to a fireproofing article and the method of manufacturing the same. The fireproofing article comprises an external portion and an inner portion. The external portion defines external surfaces of the fireproofing article that are exposed to the environment. The inner portion is formed inside of the external portion. The external portion and the inner portion are both porous and made of a fireproofing material. The external portion has a first material density and the inner portion has a second material density. The first material density is less than the second material density. The method of manufacturing a fireproofing article comprises forming the fireproofing article with a fireproofing material through 3D printing; wherein the fireproofing article formed is porous.