Abstract: In a process for mass producing optical storage sheets, an elongate film of a liquid crystalline material is fed lengthwise along a path through an aligning gate. The aligning gate applies to successive areas of the film a field which aligns the molecules. The field may be an electric field and/or a shear field. An aligning layer, such as a surfactant layer may also be used for alignment of the film areas. The aligned film may then be cut into pieces for use as microfiches or microfilms. The film material is preferably a liquid crystal polymer material.

Abstract: An apparatus for producing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, wherein an initial product of fibres and thermoplastic material-containing binder is heated as a strand and a matched batch is separated from the strand and supplied for batch further processing. The apparatus includes a melting device with a melting channel, through which is forced the material to be processed in the form of a continuous strand, as well as a dosing station.

Abstract: A method and an apparatus for producing laminated profile strips from a plurality of rubber components destined to be used in automotive vehicle tires are disclosed. The individual rubber profile strips, formed from various mixtures are each extruded from individual extrusion devices. Each extrusion device has its own extrusion head having an appropriate nozzle outlet which delivers each strip onto its own individual roller. The edges of each strip are trimmed while it is on its roller. The rollers are disposed adjacent one another so as to define roller nips therebetween. The component strips are subsequently laminated together in the nips to form either an intermediate or final profile strip. If an intermediate strip is produced, this remains on one of the rollers and is jointly passed through a further nip between the roller on which is located and a further roller carrying either a further individual strip or a further intermediate profile strip produced in a like manner to produce the final strip.

Abstract: Apparatus comprising a feed carriage which can traverse back and forth in the running direction A of a base. Two cutting units are arranged on the feed carriage, which units consist of lifting cylinders to which vacuum bars and holding beams with cutting bands are fixed respectively. Photoresist webs to be laminated onto the base are advanced by a pair of transport rollers by way of deflection rollers and drawn to the vacuum bars which are lowered and raised, respectively, in the direction of the base in order to press the photoresist webs onto the two sides of the base. An optical sensor detects the front and rear edges of each base and controls the moving together and apart of the vacuum bars, the application of negative pressure to the vacuum bars, as well as the neutralizing of the negative pressure, and the cutting movement of the cutting bands.

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: In a method of producing a gel sheet for electrophoresis comprising a gel membrane acting as the medium for electrophoresis composed of a hydrophilic polymer having a uniform thickness, two sheets of transparent or translucent electrical inslating films disposed on the front and the rear surfaces of the gel membrane and two pieces of spacers disposed along two facing sides of the gel membrane, an end not provided with the spacer of the gel membrane is cut off to form a slot for loading samples, the improvement which comprises, punching the gel membrane, before one surface of the gel membrane is covered with said electrical inslating film yet, to form the portion corresponding to the slot for loading samples, pressing an adhering member on the cut piece of gel membrane thereby sticking at least an edge of the cut gel membrane piece thereon, and removing the adhering member holding the cut piece of gel membrane therefrom.

Abstract: A process and apparatus for producing a reclosable container stock with adhered occludable closure strip portions, said apparatus comprising a rotatable lay-on roll having circumferential grooves therein, means to advance the closure strip portions to the lay-on roll, a rotatable casting cylinder positioned opposite the lay-on roll, means for extruding a molten plastic film onto the casting cylinder so that the film adheres to the closure strip portions, and means for cooling the resulting reclosable container stock with adhered closure strip portions.

Abstract: A process for continuous fabrication of thermoplastic webs from at least one extruded thermoplastic web heated to processing temperature. This thermoplastic web is cooled under the application of area pressure down to a temperature at which smoothing of the surface is terminated. A calibrating and smoothing mechanism in the device for performing the process according to the invention consists of a double-band press which includes an apparatus for conducting heat away from the thermoplastic web in the reaction zone in which the area pressure is applied.

Abstract: An apparatus for adjusting the thickness of a resin plate formed in a resin plate making machine comprising stacked, wedge-shaped members, each wedge-shaped member having an inclined surface slidably contacting the other inclined surface, the top most member being connected to either spacers positioned above a rigid base plate on which the resin plate is formed, or to the rigid base plate itself, for adjusting the height of the spacers relative to the base plate as the wedge-shaped members are moved relative to one another in the direction of inclination of the inclined surfaces.

Abstract: The present invention provides a method and apparatus for taking up and winding a strip of material which is advancing at a selected velocity from a moving casting surface. Generally stated, the apparatus includes a take-up web supply mechanism for supplying a flexible, take-up web, and a winding mechanism, which has a reel for taking up and concentrically winding the strip and take-up web thereon in a laminated configuration. A connection mechanism connects the take-up web to the reel, and a reel drive mechanism rotates the reel to provide a peripheral velocity at a winding surface on the reel that substantially matches the velocity of the advancing strip. A directing mechanism directs the advancing strip onto the take-up web for transport to a winder nip region between the take-up web and the winding surface of the reel means to initiate winding.

Abstract: A method and apparatus is disclosed for producing a reclosable bag film. The bag film is produced by extruding a bag film web having a relatively thinner first portion and relatively thicker second portions which are formed unitarily with the first portion. Closure members preferably in the form of male and female fastener profiles, are formed separately from the web portion and joined to the thicker second portions before the thicker second portions have become cooled to an ambient temperature.

Abstract: An apparatus for the continuous manufacture of an endless strip of thin chipboard includes means for depositing wood chips mixed with a bonding agent onto a horizontally-disposed section of a continuously revolving pretensioned conveyor belt. This apparatus is further provided with a heated compression drum adjacent the discharge end of the conveyor belt. An endless steel belt partially encircles the compression drum surface to provide a compression gap between the steel belt and the drum surface. The improvement comprises a first deflector roller mounted adjacent the point where the chips enter the gap; a second deflector roller beneath said depositing means; and the conveyor belt being endless, made from textile material and trained around the first and second deflector rollers to convey the chips to the gap.

Abstract: A process of manufacturing an element for electrophotresis which comprises steps of: sticking a spacer continuously to both side portions of a support web which is rolled back continuously from the rolled condition; casting on said support a solution for forming a medium membrane for electrophoresis; subjecting the support to hardening treatment to form a medium membrane; cutting off a portion of the medium membrane and support web; and sticking a cover sheet onto the medium membrane. An apparatus advantageously employable for performing the above process is disclosed.

Abstract: Multiple layered plastic sheets is produced by sequentially disposing at least two powdered flowable materials onto a melted layer of plastic being conveyed in a given direction. Each material corresponds to a separate layer of the resulting multilayer sheet.

Abstract: An improved process suitable for continuously producing tiles which have the sharp and vivid coloring characteristics of ceramic tiles. In accordance with this process, a release paper is coated with a clear liquid plastisol layer. The clear liquid plastisol layer is given a completely smooth upper surface. A decorative design is then applied to the smooth upper surface by transfer printing. The printed plastisol is then covered with an opaque plastisol backing layer to form a cast wear layer comprising the clear plastisol layer, the printed pattern, and the opaque plastisol backing layer. The cast wear layer is then transferred to a continuous plastic base web that has been made previously so that the backing layer is in contact with the base web. The cast wear layer is laminated onto the base web, and this laminate is embossed using an engraved roll having raised sections which are images of the printed design.

Abstract: A helical band is produced by applying a layer of heat-settable material on to a rotating support to one side of the axis of rotation. Heat is applied to the layer, as by the support while it rotates, for a length of time sufficient for the material in the layer to set to a required extent to form the band. The band is removed before it comes into contact with the material being applied on the support. The band is preferably made of electrically-insulating material so that it can be wound helically round and bonded to a cylindrical rod of electrically-insulating material to form a helically flanged insulator for use in an overhead electric power transmission line, the flange-forming band defining along the rod a helical leakage path of substantially uniform width.

Abstract: A capped printing plate making machine is used for making flexographic capped printing plates. The machine includes a pair of troughs for applying two layers of photopolymerizable resin materials simultaneously. The troughs are so designed that actuation of one trough to permit its material to be applied automatically results in the other trough being positioned and opened for the application of its material.

Abstract: A plywood is manufactured by applying an aqueous plywood adhesive fluid to the peripheral surface of a heating roll rotating at a given speed by means of a roll coater to form an adhesive fluid film, drying the adhesive fluid film into a tacky-dry film while it is carried on the surface of the heating roll, stripping the tacky-dry adhesive film from the roll surface by pulling it under tension with or without the aid of a stripping knife, interposing the adhesive film between a pair of veneers, and pressing the veneers to each other to bond them.

Abstract: In the manufacture of film containing integral fasteners and the like, the film commonly exits through an elongated slot die while profiles for the fasteners exit through a smaller configured slot located laterally along the film die slot. The fastener profiles normally carry a thickened base so that the profiles will stand without undue tipping for better interengagement with one another. It has been found that it is advantageous if the base of the profile can be adjusted transversely of the film slot so that the size of the base can be adjusted on-line. The present invention allows the die block to be transversely adjustable by a combination of a U-shaped mounting block, an inverted T-shaped profile plate and an eccentric adjustment pin, assembled in a fashion so that the eccentric pin can be rotated to adjust transversely the gap through which the profile base passes just before joining the film. This device also makes possible measurement of the gap for the profile base indirectly on line.

Abstract: In an apparatus for producing multi-walled thermoplastic tubing in which the inner and outer tubing walls are continuously formed by extrusion one within the other, the inner tube being urged outwardly into pressing engagement with the outer tube, the mechanism for urging the inner tube outwardly into securement with the outer tube comprises a mandrel mounted coaxially with the die for extruding the inner tube and on the downstream side of it. The mandrel has an outer surface providing a tapered end portion positioned to receive the inner tube as it is extruded, and a generally cylindrical portion positioned to urge the inner tube into securement with the outer tube. To prevent sticking of the thermoplastic material to the mandrel, the outer surface of the mandrel is maintained at a temperature lower than the molding temperature and is transversely ribbed.

Abstract: A method and apparatus for extruding a film, a tape and a closure device simultaneously to produce integrated interlocking closure stock comprising (a) extruding a sheet of film onto a rotating casting roll at a rate to provide a high draw-down ratio; (b) extruding a tape to join the film on the casting roll at a rate to provide a medium draw-down ratio; and (c) extruding a closure device onto the tape as it approaches the casting roll at a rate to provide a small draw-down ratio.

Abstract: An apparatus and method is disclosed which will rapidly provide uniform layers of two liquid photopolymerizable materials for a capped (i.e., two layer) printing plate. The apparatus comprises a dual manifold which spans the plate-forming area of a surface and which is moved in tandem transversely in order to provide two overlapping layers of liquid photopolymerizable materials.

Abstract: A foaming apparatus for manufacturing insulation material includes a mixing chamber, a pump for withdrawing the composition from the mixing chamber and supplying it to the apex of a hollow conical expansion chamber where the apex is located vertically beneath the base of the cone, a cover for the base of the cone including an outlet in the form of a nozzle which imparts a desired shape to the foamed composition.

Abstract: The invention relates to a method and apparatus for fabricating sheets of thermoplastic or thermosetting material whereby said material in a non-hardened condition is fed into the space between the vertical parts of two endless belts which material according to the invention is supplied onto the returning parts of the belts in the form of webs or by spraying while preferably material is supplied as well from above within the gap between the layers facing each other.

Abstract: A method of making a resin panel in which a carrier film receives thereon a layer of thermosetting resin and glass fibers are placed on the resin layer. This composite is inverted and passed between a roller and a section of a moving belt, the belt being of a material impermeable to the resin. The resin layer with glass fibers therein is passed through a heating zone to cure the resin while on the belt. After the resin is cured it may be separated from the belt by bending the belt away from the resin.The machine carries out the above method employing a belt of stainless steel or the like which extends over a pair of rolls to provide a conveyor for the formed resin layer. The machine has a pair of rolls for forming the resin-glass composite. One of these rolls serves to invert the layers and serves also to press the layers against the belt. Heaters are provided to heat the formed resin to cure it while on the belt.

Abstract: An apparatus for producing a photo-polymer plate having relief image areas thereon has a photo-polymerizable material feed device reciprocally movable along guide rails through a photo-polymerizable material layer forming station. The feed device has a frame supported on the rails by first and second pairs of wheels and carrying a bucket containing the photo-polymerizable material in liquid phase and tiltable to pour the material onto a protective sheet material placed on a photo-polymerizable material layer forming station when the feed device is moved over the protective sheet material. A doctor is mounted on the frame to level the layer as well as to preliminarily reduce the thickness thereof. A backing sheet material is placed over the layer to form an assembly of the two sheet material and the layer of the photo-polymerizable materials sandwiched therebetween.

Abstract: Self-curing elastomeric compounds in liquid suspension are sprayed onto a warmed rotating former having preferably a form developed from the radial dimensions of the inner tube to be made. The tube is cured and complete on the form by transposing one end of the sleeve to the opposite axial end of the former where the one end is seamed to the other end of the sleeve. Both the process and the tube produced by the process have advantages in manufacturing cost, in material saving, and at least equal quality performance relative to conventional inner tubes and methods of making them.

Abstract: A method of making pile fabrics in which a compacted block of strands of pile forming material is incrementally discharged from an open end of a container in successive increments of an amount equal to the desired length of pile and, following each discharge of the block from the container, a pile slice is severed from the block while being deposited directly onto and secured to an advancing layer of adhesive carried by a release surface to form a pile fabric of cut pile tufts secured to an adhesive substrate which is then removed from the release surface.

Abstract: Apparatus for the continuous production of chipboard, fibreboard or like panels, comprising a tensioned endless steel belt guided over a plurality of rollers and partially around a heated revolvable press drum such that said rollers press the belt against said drum, sprinkler apparatus disposed over a portion of the belt which extends horizontally before said drum in the direction of movement of the belt such that material to form said panels sprinkled onto said portion of the belt is pressed between the belt and the drum to form a web of material, wherein at least one of said plurality of rollers has over its width a convexly ground surface, whereby panels produced on the apparatus can have substantially uniform thickness and weight.