Abstract:
A running strip-shaped substrate of paper or thermoplastic material is provided with several layers of adhesive or other coating material at a transfer station where it comes in contact with discrete layers of coating material which are supplied by individual belt conveyors and are heated during travel with the respective conveyors to promote the expulsion of solvent which is gathered by individual streams of an inert gas flowing counter to the direction of travel of the layers with the conveyors. The layers are heated by the respective conveyors each of which is heated by a discrete heating device.
Abstract:
Laminates of polyvinyl fluoride and at least one other fluoropolymer that are free from adhesive at the interface and a process for preparing the laminates by dispersion coating a first film to form a second film and curing the second film at a temperature below the melting point of the first film.
Abstract:
A process for forming a vapor-deposited thin layer of organic material is disclosed. The process involves placing organic material on a support base within a vacuum chamber and providing a heat source in the vicinity of the organic material. A second support base is then provided within the vacuum chamber and heat is applied to the organic material at a temperature which causes the organic material to form vapors. The vapors are vapor-deposited on the second support base forming the thin layer of organic material. It is generally desirable to move both of the support bases during the vapor deposition process allowing the formation of a continuous uniform thin layer of organic material.
Abstract:
A painted surface is applied to a piece of hardboard simultaneously while the board is being formed in a press. A heat-resistant paint layer is coated onto a carrier, and the painted carrier is placed over a loose layer of exploded wood fibers in a heated press. The press applies pressure in excess of 400 psi and heat above 400.degree. F. to compact the wood fibers into an integral hardboard piece while the heat from the press simultaneously transfers the paint layer from the carrier and bonds it to a surface of the board. In one embodiment of the invention, the paint layer is a thermosetting resinous paint system, and the paint coat is sufficiently heat-resistant to remain in a hardened condition at or above the temperature at which the board is formed, thus forming a separate hardened paint layer on the surface of the board. The carrier can include an adherence coat which is heat-activated in the press to crosslink and bond the paint layer to the wood fibers.
Abstract:
Method and apparatus for coating a moving web with a multilayer liquid composition. The liquid composition is flowed by gravity down a plurality of slides each having a concave, inclined surface and having slots for feeding each layer onto the inclined surface. The inclined surface can be wholly or partially concave wherein the concave portion extends across the width of the slide.
Abstract:
A substrate to be used as a support for a release coating is provided with a powdery release support with a release agent which is substantially non-tacky by applying on the support an aqueous solution, dispersion or paste containing a lactam compound which is water soluble, swells in water or forms a paste with water, drying the resulting coating. The process comprises treating the release agent, drying the release agent, applying a polyurethane coating over the release support and then removing the polyurethane coating from the release support. The release agent is selected from lactams and addition compounds of lactams with water, oximes, amines, monofunctional or polyfunctional alcohol or thioalcohols and mixture thereof.
Abstract:
AFTER BEING PREHEATED OR BY USING THE RETAINING HEAT DEVELOPED DURING CURING, THE CONCRETE BLOCK IS PUT ON A LAMINATE COMPRISING A PLASTIC OR PAPER BASE, WHICH HAS PREDETERMINED RELEASE CHARACTERISTICS AND HAS BEEN PRECOATED RESPECTIVELY WITH (1) A PLASTIC RESIN, WITH OR WITHOUT (2) A DECORATIVE PLASTIC LAYER AND FINALLY (3) A HEATREACTIVE LAYER OF PLASTIC ADHESIVE WHICH SECURES THE LAMINATE TO THE BLOCK. THE INNER SURFACE OF THE RELEASE PLATE TO WHICH THE PLASTIC RESIN WAS AFFIXED WILL PERMIT REMOVAL OF THE RELEASE PAPER, THE PLASTIC LAYERS STAY ON THE BLOCK-FACE. THE RELEASE PLATE MAY BE LEFT ON AS A PROTECTIVE COVER DURING SHIPPING AND UNTIL AFTER THE BLOCK HAS BEEN LAID UP IN THE WALL.
Abstract:
A PROCESS FOR MAKING A THERMOPLASTIC SHEET WHICH COMPRISES THE STEPS OF PROGRESSIVELY SPREADING A PASTE OF A THERMOPLASTIC MATERIALS UPON CONTINUOUSLY MOVING SILICONE ELASTOMER BAND HAVING A PREDETERMINED SURFACE CONFIGURATION, HEATING THE PASTE THEREBY EFFECTING GELATION OF SAID THERMOPLASTIC MATERIAL AS AN INTEGRAL SHEET AND REMOVING THE HOT SHEET FROM THE BAND. IN PREFERENCE THE SHEET IS PROVIDED WITH A BACKING MATERIAL. THE PROCESS IS PARTICULARLY SUITED TO THE MANUFACTURE OF SHEET FROM PASTES BASED ON POLYMERS OR VINYL CHLORIDE. THE PASTE MAY BE APPLIED ON THE BAND IN TWO DISTINCT APPLICATIONS USING DIFFERENT PASTES FOR EACH APPLICATION. TYPICALLY A FIRST LAYER IS FORMED ON THE BAND USING A PASTE WHICH DOES NOT INCLUDE A BLOWING AGENT AND THEN A SECOND LAYER IS FORMED ON TOP OF THE FIRST LAYER USING A PASTE WHICH INCLUDES A BLOWING AGENT. WHEN THE DOUBLE LAYER IS HEATED THE BLOWING AGENT DECOMPOSES FORMING A MULTITUDE OF CELLS IN THE SECOND LAYER AND AT THE SAME TIME THE FIRST AND SECOND LAYER ARE GELLED. THE SILICON ELASTOMER BAND MAY HAVE A SMOOTH OR CONTOURED SURFACE PATTERN. ALSO THE HOT SHEET MAY BE EMBOSSED IMMEDIATELY AFTER IT IS REMOVED FROM THE BAND.
Abstract:
Provided are methods for forming polymer-infiltrated nanoparticle films by using capillary action to draw mobile molecular chains into the pores of a bed of nanoparticles. The chains can spread across the entire bed of nanoparticles. The disclosed methods also provide the formation of patterned polymer-infiltrated nanoparticle film compositions, as well as laterally graded compositions and compositions that feature a polymer gradient through the composition's thickness. Articles can be formed that include a plurality of polymer types infiltrated into the bed of nanoparticles.