Abstract: A "green" sheet manufacturing method and apparatus contemplates perforating the "green" sheet with through-holes as it is calendared, rolled or extruded by rollers. To this end, the rollers are each machined with punches of a length one-half the thickness of the "green" sheet and that mate with punches on the other. Any flash or diaphragm obtaining in the through-holes are removed by subsequently exposing the "green" sheet to new mechanisms providing fluid pressure or vibration, or spiking. The bosses or punches may be supplemented with enlargements and other bosses providing for pads and counterholes and grooves in the "green" sheet. The through-holes may be shaped to have a smaller diameter interiorly than at the outer edges to lock in place solder or other conductive media squeegeed into them. The locking action may be enhanced by slightly off-setting bosses or mating punches to produce through-holes whose top and bottom halves are slightly off-set.
Abstract: Waterbed corner structure and method in which a cornerpiece is formed as a monolithic structure with a relatively thick base plate and relatively large ridges projecting from the front surface of the base plate. The base plate has a peripheral sealing area which is affixed by heat sealing to the walls of the mattress to form the corner, and the base plate is formed of a material which is pliant enough to conform to the contour of the mattress and tough enough to resist puncturing. The ridges help to keep bedsheets in place on the mattress.
Abstract: An apparatus for the application of adhesive coated slips to a moving web or to workpieces being conveyed, and preferably to the drawn up and still open bottoms of bags, consists of pairs of feed rolls for a web of material and means for perforating and tearing off, or means for detaching, the slips from the web of material and of a transfer folding gripper cylinder for receiving and subsequent transfer of the slips or pieces of tube.
Abstract: A method and apparatus for continuously forming a laminated tubular body, disclosing the joining of opposite longitudinal edges of a strip of sheet material (5) to form a tubular body, extruding a hollow plastics lining member (1) within the body, expanding the hollow lining member within the tubular body to form a substantially continuous lining, pressure means (66, 67, 71, 72) for pressing the inner lining into sealing engagement with said inner surface, and cutting means (16) for cutting the continuously formed laminated tubular body into preselected lengths.
Abstract: Disclosed is a method and apparatus for forming a transdermal drug delivery device from a multilayer web comprised of a backing layer, a drug-containing pressure sensitive adhesive layer, and a release layer or liner in which cutting is progressively achieved along a line coplanar with the axes of a cutting roller and anvil roller counter-rotating in proximity to each other. In one embodiment, cutting is achieved completely through the web about the periphery of the transdermal drug delivery device, while simultaneously achieving a scoring only of the release liner without penetration of the pressure sensitive adhesive layer or backing layer. In an alternate embodiment there are two arrangements of rollers. A first arrangement has a cutting edge for scoring the web. After scoring, the web is passed to a second arrangement for cutting through the web to result in the transdermal drug delivery device.
Abstract: Method and apparatus for applying heat shrinkable segments of sheet material to articles having a convex sector, e.g., for applying labels to containers. Each segment is attached at its leading end to the area of maximum diameter of the convex sector, preferably flattening such area and adhesively attaching the leading end of the segment to the flattened area, then spinning the article and wrapping the segment about it and attaching the trailing end to the container or to the leading end, then causing the so wrapped article to pass through a heating and shrinking station, spinning it while so doing and applying jets of hot air to the segment above and below the area of maximum diameter to shrink the segment onto the convex sector. Apparatus suitable for carrying out this procedure is also described.
Abstract: The present invention relates to a method and apparatus for producing communication articles such as postcards, envelopes or the like in each of which display surfaces for information or the like are separably bonded with a synthetic resin therebetween by heating for concealing information such as correspondence or a printed display medium and then mailing it. It is an object of the invention to enable easy and smooth separating of a film-containing sheet and accurate insertion of a film in a sheet.
Abstract: The invention relates to a process for protecting sensitive surfaces from mechanical and physical effects, in particular the effects of pressure and/or heat, whereby the surfaces are covered by a protective layer during the application of pressure and/or heat. The protective layer is a thermoplastic or elastic plastic that is molten, plastic or elastic under the conditions of applied pressure and/or heat, and has a lower resistance to deformation than the surface to be protected.
Abstract: A method of manufacturing an assembly composed of two shaped and bonded parts in which the two parts to be shaped and bonded are placed on a header and die of a press, an adhesive is applied to at least one of the facing surfaces of the parts, the space between the header and the die is pressurized so that the parts are hot-formed to the shapes of the header and the die, and the header and die are then moved towards each other to press and bond the parts together.
August 17, 1993
Date of Patent:
March 21, 1995
Societe Hispano-Suiza, Societe ACB
Philippe Y. A. Blot, Frederic A. H. Leroy, Didier S. Vigneron
Abstract: Tags and thread are assembled together for the manufacture of tagged articles such as infusion packets in which each tag is attached to the packet by a length of thread. The thread is held in a looped form between the tag and the packet before use. For the assembly of the tags and thread and to increase the length of thread attaching each tag, means are provided for forming a doubled-over loop that can be trapped between the tag and the packet.
Abstract: A wraparound heat shrinkable sheet for covering pipes or cables is positioned therearound so its longitudinal edges overlap. A first patch is then positioned over the lapped edges, and a second patch, which is wider than the first patch, positioned over the first patch and secured to the underlying wrapped sheet. Heat is then applied, preferably by hot mastic. The heat acts to shrink the sheet which tensions the second patch, thereby directing a radial force downward onto the first patch.
Abstract: The present invention is to provide a method and an apparatus for molding a resin composite sheet having an improved composite property. Therefore, the method and apparatus according to the present invention comprises a step or means of extruding film sheets through plurality of dies from a thermoplastic composite composition comprising a thermoplastic matrix resin, a liquid crystal resin which has a liquid crystal transition temperature higher than a minimum temperature of the matrix resin and an ability to be melt-extruded into a fiber in the matrix resin; a step or means of laminating the liquid crystal resin composite films into an integral or one body sheet by superposing and pressing them to each other at a melt-bonding temperature higher than the minimum moldable temperature of the matrix resin and lower than the liquid crystal transition temperature while discharging the air therebetween by means of the pressing pressure.
Abstract: A process for extruding a thermoplastic composition at higher drawdown rates with less neck-in and greater resistance to draw resonance as well as processes for extrusion coating a substrate and for making an extrusion-cast film are disclosed. The thermoplastic composition is made of at least one substantially linear ethylene polymer used alone or in combination with at least one high-pressure ethylene polymer and/or with at least one heterogeneous linear olefin polymer.
June 29, 1993
Date of Patent:
March 7, 1995
The Dow Chemical Company
Todd J. Obijeski, Shih-Yaw Lai, Rajen M. Patel, Lichih R. Peng, Michael F. Langohr, David C. Kelley, David A. Eversdyk, Nicole F. Whiteman
Abstract: A method of applying a layer of exogenous inorganic oxide to a metal article which method involves heating a coating of a coupling agent for a temperature and for a time sufficient to convert the coating to a layer of exogenous inorganic oxide. Also a method of adhering a metal article to an adhesive and/or a composite and a method of adhering a metal article to a substrate.
December 3, 1992
Date of Patent:
February 28, 1995
Minnesota Mining and Manufacturing Company
Abstract: A manufacturing process to produce a laryngeal mask substantially as described in UK Patent GB2205499B consists in a mould which manufactures the inflatable annular ring formation of the device in an inverted form. This allows a more rigid core in the cavity mould or alternatively a dip-moulding process, which in turn, permits greater accuracy in control of wall thickness. An alternative form of the mould eliminates the need to assemble a further component, by incorporating the latter into the same single moulding process. And in a further alternative embodiment, the same single moulding process additionally provides an integrally formed inlet for oesophagus drainage, independent of the larynx-venting function of the mask per se.
Abstract: Composite sections of differing cross sectional shapes and sizes can be produced from individual profiles economically by a method in which separate guides are associated with each profile. The guides can be adjusted transversely and vertically. The guides act through guide surfaces which bear upon the top, bottom and both sides of each profile.
May 15, 1992
Date of Patent:
February 21, 1995
Paul Vente, Heinrich Pesch, Udo Post, Ulrich Knipp
Abstract: A method of, and compositions for, the making of a fire-resistant door core assembly. Doors produced from the door core assemblies. In the making of a door core assembly, an aqueous slurry containing gypsum cement and diatomaceous earth is prepared. The slurry may also include expanded mineral ore material and Portland cement. The slurry preliminarily hardens during a green cure stage.
Abstract: A method of making an elastomeric, hot-melt adhesive foam is disclosed. The method involves melting an adhesive material, mixing a gas with the adhesive material under pressure to form a solution of the gas in the adhesive material, reducing the pressure to cause evolution and/or expansion of the gas to form a foam, and stabilizing the foam by causing the adhesive material to solidify. The relatively low melt-viscosity of the adhesive material which is used to form the foam provides desirable processing times and the ability to form foams having desired physical properties, e.g., caliper and cell structure.
Abstract: A composite laminar structure for producing complementary images in a frangible image-forming substance, and having a strengthened tab portion for facilitation of the separation of the respective sheets of the laminar structure without detachment of the tab portion is described. Thermal imaging composite structures and a method for preparing structures suited to the production of high resolution images in frangible image-forming substance, and especially adapted to sheet separation by mechanical apparatus, are described.
Abstract: A pneumatic tire having a tread rubber layer disposed radially outside a carcass, a sidewall rubber layer disposed axially outside the carcass in each sidewall portion, the sidewall rubber layer softer than the tread rubber layer, a protective rubber layer disposed on the outer surface of the sidewall rubber layer, the protective rubber layer made of a fiber-reinforced rubber composition contains 10 to 50 parts by weight of short fibrous reinforcements, 20 to 70 parts by weight of carbon black, and 100 parts by weight of rubber base consisting of 20 to 100 parts by weight of natural rubber or isoprene rubber and 80 to 0 parts by weight of butadiene rubber, the short fibrous reinforcements oriented in the tire circumferential direction.