摘要:
Membrane body (1) comprising at least one pair of panels (10, 11) connected together in an adhesive manner and for each pair of said panels (10, 11), at least one flexible sheath (15) arranged stably according to a set pattern to resist membrane stress acting on the panels (10, 11); each sheath (15) housing a respective tie rod (16), connected to the panels (10, 11) in an end position in a set manner in such a way as to be suitable for resisting normal stress to free the panels (10, 11) from the respective membrane stress, thereby maintaining the group of the panels (10, 11) flexible and maintaining the corresponding production method.
摘要:
A sailcloth in roll good form permits efficient and cost effective construction of cross cut and vertical cut, laminate sails based on “off-angle,” (assymetrical) load bearing fibers. The sailcloth also may include a conventional warp and fill thread or fiber layout. Such sailcloth illustratively is significantly less susceptible to load force stretch, creep elongation, and airfoil shape deformation because, among other things, it is not dependent on the load bearing limitations of symmetrical, woven or knitted roll good sailcloth.
摘要:
The invention relates to a method of producing reinforced, formed fabrics, consisting in producing a continuous fabric alternated with a membrane (34) containing embedded reinforcing elements, which is prepared in overlapping portions on a conveyor belt (29) which passes over a preparation table (25). The membrane (34) and the reinforcing elements are then positioned under a press consisting of an upper air-filled chamber (1), the lower part thereof comprising a flexible element (4), and a lower water-filled chamber (14), the upper part thereof comprising a flexible element (17). According to the invention, a forming bar (10) is adjustably mounted in the upper chamber (1). When the aforementioned forming bar (10) is adjusted to adopt a particular shape, the different flexible elements can deform at the forming bar and the membrane and the reinforcing elements are hot pressed with a portion corresponding to the forming bar having a three-dimensional shape, thereby defining the form of the fabric produced.
摘要:
Membrane body (1) comprising at least one pair of panels (10, 11) connected together in an adhesive manner and for each pair of said panels (10, 11), at least one flexible sheath (15) arranged stably according to a set pattern to resist membrane stress acting on the panels (10, 11); each sheath (15) housing a respective tie rod (16), connected to the panels (10, 11) in an end position in a set manner in such a way as to be suitable for resisting normal stress to free the panels (10, 11) from the respective membrane stress, thereby maintaining the group of the panels (10, 11) flexible and maintaining the corresponding production method.
摘要:
An apparatus for fabricating a unique nonwoven fabric which has the appearance of a woven fabric includes a supply station for parallel warp yarns, a support structure for orienting the parallel warp yarns into a cylindrical orientation, a weft yarn applicator for wrapping weft yarns around the cylindrically oriented warp yarns after an adhesive scrim has been overlaid onto the warp yarns, a heating station for activating the adhesive and a cooling station for setting the adhesive, and a cutter for severing the cylindrically formed fabric laminate so that it can be flattened and wrapped onto a take-up roller. The weft yarn applicator including a rotating drum wherein a plurality of spools of weft yarn material are mounted in circumferentially spaced relationship and a tensioner is provided for applying the weft yarn material around the warp yarns in a predetermined tension which may be the same as, greater than, or less than the tension in the warp yarns.
摘要:
A fabric and tape laying machine operable with: (a) a robot including programmable control means, (b) a supply roll containing a continuous strip of composite tape or fabric, and (c) a mold, plug or mandrel of predetermined surface shape relative to x, y and z coordinates, including: a. a chassis for laying the tape or fabric onto the mold along a programmed path that is straight with respect to the x and y coordinates and follows contours of the predetermined surface shape with respect to the z coordinate, b. a tape supply roll, c. a contact roller module adapted to receive the tape from the supply roll, and moved along the programmed path, d. a tape cutting unit, e. feed rollers for driving the tape from the supply roll and maintaining the tape taut while it passes through the tape cutting unit, and driving the tape to the contact roller module, f. the contact roller module including at least one set of pressure contact rollers adapted to have the tape received from the tape-cutting unit laid-up onto the mold, and g. a suspension system for dynamically energizing the contact roller module to have its rollers apply a predetermined level of force downward on the tape during the lay-up process regardless of any varying contours on the mold surface.
摘要:
A sailcloth in roll good form permits efficient and cost effective construction of cross cut and vertical cut, laminate sails based on “off-angle,” (asymmetrical) load bearing fibers. The sailcloth also may include a conventional warp and fill thread or fiber layout. Such sailcloth illustratively is significantly less susceptible to load force stretch, creep elongation, and airfoil shape deformation because, among other things, it is not dependent on the load bearing limitations of symmetrical, woven or knitted roll good sailcloth.
摘要:
The invention relates to a method of producing reinforced, formed fabrics, consisting in producing a continuous fabric alternated with a membrane (34) containing embedded reinforcing elements, which is prepared in overlapping portions on a conveyor belt (29) which passes over a preparation table (25). The membrane (34) and the reinforcing elements are then positioned under a press consisting of an upper air-filled chamber (1), the lower pait thereof comprising a flexible element (4), and a lower water-filled chamber (14), the upper part thereof comprising a flexible element (17). According to the invention, a forming bar (10) is adjustably mounted in the upper chamber (1). When the aforementioned forming bar (10) is adjusted to adopt a particular shape, the different flexible elements can deform at the forming bar and the membrane and the reinforcing elements are hot pressed with a portion corresponding to the forming bar having a threedimensional shape, thereby defining the form of the fabric produced.
摘要:
A composite iso-stress sail structure comprises a sail body having an expected iso-stress line, when in a chosen sail shape and under a loading within a chosen range of loadings. An iso-stress element is laminated to the sail body material to create an iso-stress portion at a corner of the sail body. An edge of iso-stress portion is shaped to be at least generally parallel to the iso-stress line. The iso-stress portion extends from the corner along at least one of the sides of the sail distances greater than 20% of the lengths of the sides, respectively.
摘要:
A sailcloth is constructed by laminating two layers of cloth together with a central layer of film. The cloth layers are oriented such that stretch resistant yarns in the layers run perpendicular to each other.