摘要:
A manually operated guide forms a sheet of heated pliable laminate about an adhesively coated 180.degree. rounded edge of a substrate, such as may be found on the front edge of a countertop. The guide is pivotally attached to a support member at an initial angle to guide the laminate along the major portion of the rounded edge and at a different angle to guide the laminate along the remaining portion to assure continuing progressive contact between the laminate and the rounded edge.
摘要:
A manually operated guide forms a sheet of heated pliable laminate about an adhesively coated 180.degree. rounded edge of a substrate, such as may be found on the front edge of a countertop. The guide is pivotally attached to a support member at an initial angle to guide the laminate along the major portion of the rounded edge and at a different angle to guide the laminate along the remaining portion to assure continuing progressive contact between the laminate and the rounded edge.
摘要:
A clamping force of given strength is directed at right angles to a rectangular piece of plastic sheeting whose width and length are somewhat greater than that of a cupboard door with the piece of plastic sandwiched between the door and an evenly heated supporting plate which is maintained at constant temperature of at least 50.degree. C., and the projecting marginal edges of the plastic sheeting are stretched and subsequently pressed against the surface portion on the rear side of the cupboard door preheated with contact glue. The applied clamping force must be sufficient to prevent the portion of sheeting from being pulled out from between the plate and the cupboard door front while permitting that sheet portion to be stretched and extended along with the marginal portion through which the stretch force is exerted, but the force may not be so excessive that the stretching or extension of that sheet portion is prohibitive.
摘要:
A method and apparatus for manufacturing padded or cushioned straps having a main structural strap member adatped to be fastened to a surface, a vinyl wrap or cover and a foam cushion material intermediate the vinyl wrap and the strap member. The method of the present invention includes the steps of (1) longitudinally tensioning the vinyl wrap, (2) positioning the foam cushioning material and the strap member on the vinyl wrap, (3) compressing the foam and securing the components in position by applying a force across the strap member and the vinyl wrap, (4) wrapping and transversely tensioning the vinyl wrap about the foam member and the strap member so that the longitudinal edges are opposed, (5) maintaining the vinyl wrap in transverse tension and maintaining the position of the components, (6) positioning a trim strip across the opposed longitudinal edges of the vinyl wrap, (7) joining the trim strip to the vinyl wrap by dielectric heating of the trim strip and the vinyl wrap, (8) bending the assembled strap to an appropriate shape, and (9) heating the assembled strap to shrink the vinyl wrap. The apparatus disclosed herein provides a convenient structure for practicing the above method.
摘要:
An apparatus for use in sealing layers of thermoplastic material together from one side of the layers includes a heat sealing electrode having a first conductive element mounted on a support and adapted to be connected to a source of high frequency energy, and a second conductive element mounted on the same support but in spaced general parallel relation to the first conductive element and adapted to be connected to an electrical ground. The conductive elements are electrically insulated from each other and, when they are applied to one side of the thermoplastic sheet material to be sealed and high frequency energy is supplied to the first electrode, a seal is formed in the material beneath and between the ends of the electrode elements.
摘要:
A method and an apparatus for forming a top assembly for desks, tables, credenzas and similar items having a core and an outer layer of a thin hard laminated plastic sheet adhered to the core. The thin hard laminated plastic sheet covers the top surface of the core and is wrapped around the side and end walls and undersurface edges thereof. The laminated plastic sheet is unbroken by seams or rims along the side and end edges of the top assembly. In forming the top assembly, a one-piece thin hard laminated plastic sheet is adhered by cement to the top surface of the core and is positioned so that side and end portions of the laminated plastic sheet extend beyond the side and end edges of the top surface. A selected extending side or end portion of the laminated plastic sheet is heated to soften it and make it pliable. The softened laminated plastic is bent downwardly and pressed into contact with the adjacent adhesive coated side or end wall of the core thereby adhering the laminated plastic sheet to that wall. The bending and pressing are continued thereby bending the laminated plastic sheet inwardly to adhere it to the edge of the undersurface of the core. This operation is repeated for each side or end of the top assembly. The apparatus used includes a hydraulic actuating clamping bar for holding the top assembly in place during bending operations and a hydraulic actuated bending or forming bar which bends the softened laminated plastic sheet downwardly and wraps it around and under the side and end walls of the top assembly core. During bending operations, the forming bar pivots about an axis which is moving in an arcuate path. The movement of the forming bar in the arcuate path is opposed by spring means.
摘要:
A method and apparatus for post forming laminate tops. A top substrate and its overhanging laminate are mounted on a pivotable supporting table. When the table is in a first position, the overhanging laminate is adjacent a heater of generally C-shaped cross section. The heater can be pivoted into a position embracing the overhanging portion of the laminate. The laminate is very rapidly heated to a temperature of approximately 335.degree. to 365.degree.F., preferably within a period of about from 12 to 16 seconds. The ambient heater temperature is roughly from 550.degree. to 750.degree.F. As soon as the laminate has been heated, the heater pivots out of position. The table pivots upwardly, thereby wiping the overhanging laminate past the bottom edge of a former. The former then moves forwardly and, due to a generally C-shaped cross section, firmly clamps the overhanging laminate around the periphery of the substrate. After cooling, the former is retracted and the post formed top can be removed.
摘要:
THE DISCLOSURE HEREIN DECRIBES A METHOD FOR PRODUCING PANELS BY MOULDING. A POROUS GRID IS INTRODUCED INTO A VERTICAL MOULD CONSISTING OF ENDLESS BELTS MOVING FROM TOP TO BOTTOM OF THE MOULD. AT THE SAME TIME, A FILLER MATERIAL, SUCH AS AN EXPANSIBLE PHENOLIC RESIN IS FED INTO THE MOULD THROUGH POURING HEADS WHICH CARRY OUT A RECIPROCATING MOTION ALONG THE UPPER PART OF THE MOULD, THE PHENOLIC RESIN EXPANDS IN THE GRID, OCCUPYING ALL OF
THE PORES OR CELLS THEREIN. THE PANEL OBTAINED MAY BE USED IN BUILDING TO CONSTRUCT WALLS, PARTITIONS, FLOORS, AND CEILINGS.
摘要:
A REINFORCED LASTIC ENCAPSULATED PLYWOOD AND LIKE CORE PANEL CURED AND FORMED IN MATCHED METAL DIES, THE PREFERRED FROM OF WHICH INCLUDES FIBROUS GLASS ROVING WRAPPED ABOUT EACH OF THE EDGES OF THE PLYWOOD; METHOD AND APPARATUS FOR MAKING THE SAME WHICH INCLUDE WINDING THE ROVING FROM SIDE TO SIDE AND END TO END ABOUT THE PLYWOOD CORE, APPLYING THE RESIN, AND FORMING AND CURING THE RESIN IN A PRESS HAVING SUCH DIES, AND THEN REMOVING FLASH FROM THE FINISHED PRODUCT.
摘要:
A means and method for the continuous application of a flexible facing strip of indefinite length to one face of each of a succession of cores while all are advancing in end to end engagement through a fixed path. The method involves (1) drawing the strip from a supply roll to overlie the top face of a plurality of cores for adhesion thereto while advancing end to end in a procession, (2) forming lines of future rupture across the strip, while advancing toward the cores, at points which are coincident with the trailing ends thereof, and (3) thereafter tensioning the advancing strip, as each core nears the end of its movement through a fixed path therefor, at points on opposite sides of each line of rupture, transversely of the strip to produce thereat a clean deverance thereof whereby to free each core, in turn, for removal from those to the rear thereof.