The machine (1) for sealing plastic profiled elements comprises: a base frame (6); retention means (7, 8) of at least a profiled element (P) of plastic material having a first main face (2), a second main face (3), a first lateral face (4), a second lateral face (5) and respective areas to seal (Z), the retention means (7, 8) being associated with the base frame (6) and comprising a first support element (7) movable along a first direction of sliding (A) and a second support element (8) mounted on the first support element (7) and movable relative thereto along a second direction of sliding (B); a heat-sealing element with heated plate (11), having two mutually opposite surfaces on which the areas to seal (Z) to be heated are placeable in contact; sliding means (9, 10) of the retention means (7, 8) adapted to shift the profiled elements (P) between a position of reciprocal moving away and a position of mutual approach wherein the heated areas to seal (Z) are joined together; wherein the machine (1) comprises positioning means (13, 14) associated with the support elements (7, 8) and adapted to receive a portion of one of the lateral faces (4, 5); locking means (15, 28) movably associated with the retention means (7, 8) and adapted to keep the profiled elements (P) in a locking configuration wherein one of the main faces (2, 3) is kept into contact with one of the support elements (7, 8) and one of the lateral faces (4, 5) is arranged into contact with the positioning means (13, 14), and wherein the locking means (15, 28) prevent the profiled elements (P) from rotating around the longitudinal axis of the profiled elements themselves.

Fluted core sandwich panels are joined together to form a composite structure. Variations in panel ends are accommodated by a core stiffener insert installed in a joint between ends of the panels.

A method for assembling a composite wall assembly edge joint including laying up a first composite face sheet, laying up a first composite buildup pad having a first tapered section onto the first composite face sheet and positioning a composite flute core member, including a tapered first portion with a first inclined surface and a second inclined surface. First inclined surface is positioned onto the first tapered section of the first composite buildup pad and a second portion of the composite flute core member extends from the tapered first portion along first composite face sheet. The method also includes laying up a second composite buildup pad having a second tapered section with the second composite buildup pad spaced apart from the first composite buildup pad and having at least a portion of the second tapered section overlying the second inclined surface of the tapered first portion.

A coupling component (60,30) having a first end (61,71) and a second end (66,76), the component having a longitudinal axis between the first end and the second end, the first end of the component comprising a first tubular portion (62,71) having a first internal diameter adapted to form a sliding fit with a first pipe section, and a first seal adapted such that the first end can be sealed in use to the first pipe section; the second end having a second diameter or cross-sectional area which is larger than the first diameter and wherein the second end incorporates a flange (67,77), wherein at least part of the face of said flange is in a plane substantially non-perpendicular to, or offset from, the longitudinal axis of the component.

The machine (1) comprises: retaining means (3, 4) of a first profiled element (5) and of a second profiled element (6) made of plastic material, which extend along respective longitudinal directions and are each provided with at least one area to be welded (7) substantially inclined by an angle comprised between 10? and 80? with respect to the respective longitudinal direction and at least one main face (5a, 6a) square-shaped, wherein the main face (5a) of the first profiled element (5) is projected with respect to the respective area to be welded (7) and the main face (6a) of the second profiled element (6) is recessed with respect to the relevant area to be welded (7); removal means (16) comprising a pair of milling tools (17) movable in rotation around a relevant axis of rotation (R); suction means (20) adapted to remove the residues of plastic material generated during the removal of the plastic material;
wherein the suction means (20) comprise at least one suction duct (21) arranged around a respective milling tool (17), which comprises a substantially flat abutment portion (24) adapted to internally abut against the main face (5a) of the first profiled element (5) during the removal of the plastic material.

Provided is a resin profile joining method of joining a pair of resin profiles. The method includes: holding one resin profile and another resin profile of the pair of resin profiles with a first mold and a second mold, respectively; heating the end surfaces of the pair of resin profiles in no contact with the end surfaces of the pair of resin profiles to melt the pair of resin profiles; after the heating, moving each of the first mold and the second mold relative to the pair of resin profiles in a longitudinal direction of a corresponding resin profile of the pair of resin profiles; and crimping the end surfaces of the pair of resin profiles to each other while keeping the first mold and the second mold in contact with the surfaces of the pair of resin profiles.

Provided is a resin profile joining method of joining a pair of resin profiles. The method includes: holding one resin profile and another resin profile of the pair of resin profiles with a first clamp and a second clamp, respectively, such that end surfaces of the pair of resin profiles are faced each other; heating the end surfaces of the pair of resin profiles in no contact with the end surfaces of the pair of resin profiles to melt the pair of resin profiles; making a guide in contact with surfaces of the pair of resin profiles so as to cover between the end surfaces of the pair of resin profiles after the heating; and crimping the end surfaces of the pair of resin profiles to each other while keeping the guide in contact with the surfaces of the pair of resin profiles.

A method of making an aircraft acoustic structural panel (10) begins with preforming a core honeycomb laminate (12) having preformed foam (3) bonded inside cells (14) thereof by a distinct adhesive (2). The preformed honeycomb laminate (12) is then stacked between opposite top and bottom structural outer laminates (16,18). The stacked honeycomb laminate (12) and outer structural laminates (16,18) are then compressed together under heat and pressure into a unitary structural panel (10) having the core honeycomb laminate (12) integrally bonded between outer skins (20,22). The outer laminates (16,18) may include imperforate acoustic septums (4) bounding the core honeycomb laminate (12) followed by an outer honeycomb (5) and structural fiber layers (6,7,8) defining the outer skins (20,22).

The process for the manufacture of windows/doors (1), characterized by the fact that it comprises the following steps: providing at least one inner panel (2) for windows/doors; providing a plurality of plastic profiled elements (3) for windows/doors, each of the profiled elements (3) comprising at least two areas to seal (5), coupleable to the areas to seal (5) of the other profiled elements (3), and at least one longitudinal slot (6), in which a respective perimeter side (4) of the inner panel (2) is insertable; performing a step of mechanical machining by chip removal on at least one of the areas to seal (5); heating the areas to seal (5); coupling the heated areas to seal (5) to one another by pressing the profiled elements (3) one against the other to maintain the areas to seal (5) in mutual contact and define the frame for windows/doors, the coupling taking place with the inner panel (2) inserted in the longitudinal slots (6) to define a window/door (1) which is composed by the frame and by the inner panel (2) contained in the frame.

A composite wall assembly edge joint including a first composite buildup pad having a first tapered section is secured to and extends along a first composite face sheet. A second composite buildup pad having a second tapered section is secured to and extends along a second composite face sheet, wherein the first and second composite buildup pads are positioned between spaced apart first and second composite face sheets. A composite flute core member includes a tapered first portion positioned between and secured to the first tapered section and to the second tapered section. A second portion of the composite flute core member extends in a direction away from the tapered first portion of the composite flute core member and is positioned between, extends along and is secured to the first and second composite face sheets.