Apparatus for producing thermoplastic synthetic resin laminated material having a large number of independent air cells

Claim 2

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that the apparatus comprises an extruder, a die mounted on said extruder and having at least two spaced parallel slits for supplying a filmy molten resin sheet from each slit, a rotatable suction roll disposed below said die and comprising a hollow cylindrical body, a vacuum box having an open side mounted within said cylindrical body, said vacuum box arranged in communication with a vacuum source, the inner peripheral surface of said cylindrical body being in sliding contact with the open side of said vacuum box, said cylindrical body having a plurality of holes formed therethrough for communication between the interior of said vacuum box and the exterior of said suction roll, a wire gauze wrapped around the outer periphery of said cylindrical body, a mounting and cooling roll disposed below said suction roll and the axis of said suction roll and said mounting and cooling roll being in parallel with the slits in said die, an endless molding belt formed with a large number of holes therethrough and said belt entrained around said suction roll and said mounting and cooling roll so that the holes therethrough communicate with the holes in said cylindrical body communicating with the vacuum box, said molding belt arranged to support the resin sheets with said support roll and mounting and cooling roll positioned in relationship to the slits in said die so that one of the sheets contacts said molding belt radially outwardly from the open side of said vacuum box at an angularly spaced position on said molding belt from the position where the other sheet contacts the one of the sheets in an overlapping arrangement, and a holding and cooling roll engaged with and pressed against the outer surface of said endless molding belt so that it contacts and presses the overlapped resin sheets against said belt.

Claim 3

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits; a suction roll consisting of a cylindrical body, a vacuum box positioned within said cylindrical body and having an open edge, a hollow shaft extending axially through said cylindrical body and disposed in communication with a vacuum source, said vacuum box being fixed on said hollow shaft, levers supporting both ends of said hollow shaft, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and cooling roll disposed below said suction roll; an endless molding belt formed with a large number of holes and passed around said suction roll and said mounting and cooling roll; a holding and cooling roll engaged with and pressed against said endless molding belt; the axis of said suction roll and of said holding and cooling roll being parallel to each of said slits, and said vacuum box being arranged so that the position of its opening with respect to said cylindrical body can be changed and regulated by means of swinging of said levers.

Claim 4

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits; a suction roll consisting of a cylindrical body, a vacuum box positioned within said cylindrical body and having an open edge, a hollow shaft extending axially through said cylindrical body and disposed in communication with a vacuum source, said vacuum box being fixed on said hollow shaft, levers supporting both ends of said hollow shaft, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and cooling roll disposed below said suction roll; an endless molding belt formed with a large number of holes and passed around said suction roll and said mounting and cooling roll; a holding and cooling roll engaged with and pressed against said endless molding belt; the axis of said suction roll and of said holding and cooling roll being parallel to each of said slits, and said vacuum box being arranged so that the position of its opening with respect to said cylindrical body can be changed and regulated by means of swinging of said levers.

Claim 5

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll comprising a cylindrical body, a vacuum box disposed within said cylindrical body and having an open edge, the inner peripheral surface of said cylindrical body being in sliding contact with the open edge of said vacuum box, said cylindrical body having holes extending therethrough from its inner to its outer surface, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and cooling roll disposed below said suction roll, a hollow shaft positioned within and extending along the axis of said mounting and cooling roll, a feed water pipe inserted within said hollow shaft, and cooling water being supplied into the inner space of said mounting and cooling roll through said feed water pipe and said hollow shaft having an opening in its peripheral wall for removing the cooling water from within said mounting and cooling roll and for discharging it exteriorly of said mounting and cooling roll.

Claim 6

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll comprising a cylindrical body, a vacuum box disposed within said cylindrical body and having an open edge, the inner peripheral surface of said cylindrical body being in sliding contact with the open edge of said vacuum box, said cylindrical body having holes extending therethrough from its inner to its outer surface, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and cooling roll disposed below said suction roll, a hollow shaft positioned within and extending along the axis of said mounting and cooling roll, a feed water pipe inserted within said hollow shaft, and cooling water being supplied into the inner space of said mounting and cooling roll through said feed water pipe and said hollow shaft having an opening in its peripheral wall for removing the cooling water from within said mounting and cooling roll and for discharging it exteriorly of said mounting and cooling roll.

Claim 7

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll consisting of a cylindrical body, a vacuum box having an open edge positioned within said cylindrical body and said cylindrical body being disposed in sliding contact with the open edge of said vacuum box, said vacuum box being disposed in communication with a vacuum source, said cylindrical body having holes extending therethrough from its inner to its outer surface, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and colling roll disposed below said suction roll; an endless molding belt formed with a large number of holes extending therethrough and passed around said suction roll and said mounting and cooling roll; a holding and cooling roll engaged with and pressed against said endless molding belt, a hollow shaft extending through and along the axis of said holding and cooling roll, a feed water pipe extending through said hollow shaft, so that cooling water is supplied into the inner space of said holding and cooling roll through said feed water pipe and said hollow shaft having an opening therein for removing the cooling water from said holding and cooling roll for discharging the cooling water exteriorly of the holding and cooling roll.

Claim 8

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll consisting of a cylindrical body, a vacuum box having an open edge positioned within said cylindrical body and said cylindrical body being disposed in sliding contact with the open edge of said vacuum box, said vacuum box being disposed in communication with a vacuum source, said cylindrical body having holes extending therethrough from its inner to its outer surface, and a wire gauze wrapped around the circumferential periphery of said cylindrical body; a mounting and colling roll disposed below said suction roll; an endless molding belt formed with a large number of holes extending therethrough and passed around said suction roll and said mounting and cooling roll; a holding and cooling roll engaged with and pressed against said endless molding belt, a hollow shaft extending through and along the axis of said holding and cooling roll, a feed water pipe extending through said hollow shaft, so that cooling water is supplied into the inner space of said holding and cooling roll through said feed water pipe and said hollow shaft having an opening therein for removing the cooling water from said holding and cooling roll for discharging the cooling water exteriorly of the holding and cooling roll.

Claim 9

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll comprising a cylindrical body, a hollow shaft extending axially through said cylindrical body, a vacuum box mounted on said hollow shaft within said cylindrical body and having an open edge therein, the inner peripheral surface of said cylindrical body being disposed in sliding contact with the open edge of said vacuum box, said vacuum box being in communication with a vacuum source, said cylindrical body having holes extending therethrough from its inner to its outer surface and a wire gauze wrapped around the circumferential periphery of said cylindrical body, a lever supporting each of the ends of said hollow shaft, a machine base arranged to support the said suction roll, a supporting shaft positioned on said machine base, the ends of said levers spaced from said suction roll being mounted on said supporting shaft, a connecting member attached to each said lever, a handle rotatably mounted on said machine base, a screw rod connected to said connecting member, a worm and worm wheel assembly connected to said handle and to said screw rod for movably positioning said levers for selectively positioning said suction roll.

Claim 10

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that said apparatus comprises an extruder, a die mounted on said extruder and having at least two parallel slits therein; a suction roll comprising a cylindrical body, a hollow shaft extending axially through said cylindrical body, a vacuum box mounted on said hollow shaft within said cylindrical body and having an open edge therein, the inner peripheral surface of said cylindrical body being disposed in sliding contact with the open edge of said vacuum box, said vacuum box being in communication with a vacuum source, said cylindrical body having holes extending therethrough from its inner to its outer surface and a wire gauze wrapped around the circumferential periphery of said cylindrical body, a lever supporting each of the ends of said hollow shaft, a machine base arranged to support the said suction roll, a supporting shaft positioned on said machine base, the ends of said levers spaced from said suction roll being mounted on said supporting shaft, a connecting member attached to each said lever, a handle rotatably mounted on said machine base, a screw rod connected to said connecting member, a worm and worm wheel assembly connected to said handle and to said screw rod for movably positioning said levers for selectively positioning said suction roll.

Claim 11

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that the apparatus comprises an extruder, a die mounted on said extruder and having at least two spaced parallel slits for supplying a filmy molten resin sheet from each slit, a rotatable suction roll disposed below said die and comprising a hollow cylindrical body, a vacuum box having an open side mounted within said cylindrical body, said vacuum box arranged in communication with a vacuum source, the inner peripheral surface of said cylindrical body being in sliding contact with the open side of said vacuum box, said cylindrical body having a plurality of holes formed Therethrough for communication between the interior of said vacuum box and the exterior of said suction roll, a wire gauze wrapped around the outer periphery of said cylindrical body, a mounting and cooling roll disposed below said suction roll and the axis of said suction roll and said mounting and cooling roll being in parallel with the slits in said die, an endless molding belt formed with a large number of holes therethrough and said belt entrained around said suction roll and said mounting and cooling roll so that the holes therethrough communicate with the holes in said cylindrical body communicating with the vacuum box, said molding belt arranged to support the resin sheets with said support roll and mounting and cooling roll positioned in relationship to the slits in said die so that one of the sheets contacts said molding belt radially outwardly from the open side of said vacuum box at an angularly spaced position on said molding belt from the position where the other sheet contacts the one of the sheets in an overlapping arrangement, a holding and cooling roll engaged with and pressed against the outer surface of said endless molding belt so that it contacts and presses the overlapped resin sheets against said belt; and a taking-up device arranged to make the taking-up speed constant by changing automatically the rotating speed of the taking-up shaft in response to the diameter of the laminate wound on the take-up reel.

Claim 12

Apparatus for producing thermoplastic synthetic resin laminates having a large number of independent air cells, characterized in that the apparatus comprises an extruder, a die mounted on said extruder and having at least two spaced parallel slits for supplying a filmy molten resin sheet from each slit, a rotatable suction roll disposed below said die and comprising a hollow cylindrical body, a vacuum box having an open side mounted within said cylindrical body, said vacuum box arranged in communication with a vacuum source, the inner peripheral surface of said cylindrical body being in sliding contact with the open side of said vacuum box, said cylindrical body having a plurality of holes formed Therethrough for communication between the interior of said vacuum box and the exterior of said suction roll, a wire gauze wrapped around the outer periphery of said cylindrical body, a mounting and cooling roll disposed below said suction roll and the axis of said suction roll and said mounting and cooling roll being in parallel with the slits in said die, an endless molding belt formed with a large number of holes therethrough and said belt entrained around said suction roll and said mounting and cooling roll so that the holes therethrough communicate with the holes in said cylindrical body communicating with the vacuum box, said molding belt arranged to support the resin sheets with said support roll and mounting and cooling roll positioned in relationship to the slits in said die so that one of the sheets contacts said molding belt radially outwardly from the open side of said vacuum box at an angularly spaced position on said molding belt from the position where the other sheet contacts the one of the sheets in an overlapping arrangement, a holding and cooling roll engaged with and pressed against the outer surface of said endless molding belt so that it contacts and presses the overlapped resin sheets against said belt; and a taking-up device arranged to make the taking-up speed constant by changing automatically the rotating speed of the taking-up shaft in response to the diameter of the laminate wound on the take-up reel.