Abstract: A method of producing a prepreg is described, in which a matrix resin is applied to a reinforcing fiber sheet in which the sheet can continuously run without clogging due to generated fuzz even at a high running speed and where the reinforcing fiber sheet can be efficiently impregnated with the matrix resin. A method of producing a prepreg includes allowing a reinforcing fiber sheet to pass substantially vertically downward through the inside of a coating section storing a matrix resin to apply the matrix resin to the reinforcing fiber sheet; and then applying a resin film to a primary impregnate prepreg withdrawn from the coating section.

Abstract: A method is described for producing a prepreg formed by applying a matrix resin to a reinforcing fiber sheet, wherein the method can effect continuous running without clogging due to generated fuzz even at a high running speed and effect efficient impregnation of the reinforcing fiber sheet with a matrix resin. A method of producing a prepreg includes allowing a reinforcing fiber sheet to pass substantially vertically downward through the inside of a coating section storing a matrix resin to obtain a matrix resin-impregnated reinforcing fiber sheet in which the matrix resin is applied to the reinforcing fiber sheet and at least heating the matrix resin-impregnated reinforcing fiber sheet, wherein the coating section includes a liquid pool and a narrowed section which are in communication with each other, wherein the liquid pool has a portion whose cross-sectional area decreases continuously along a running direction of the reinforcing fiber sheet.

Abstract: By use of a process for the production of a fibre-composite material, comprising the following steps: a) one or more fibre bundle(s) is/are drawn by way of one or more spreader device(s) into an impregnation chamber in such a way as to give at least two mutually superposed, spatially separate and spread fibre webs; b) melt is introduced by way of horizontally oriented distributor bars, in each case arranged between two fibre webs; c) the individual fibre webs are caused to converge in such a way that they are mutually superposed and contact one another; d) after the fibre webs have converged they are drawn, at the end of the operating unit, through a take-off die where the first shaping takes place, and also by use of a corresponding device, very good impregnation quality is achieved through a specific wetting method implemented after a high degree of expanding, and also through subsequent relative longitudinal and transverse movements of the individual fibres.

Abstract: Method for bonding together up to three layers in a film, which may be made of layers of different materials. The method includes unwinding from pay-off units layers of the film and guiding them into a spreader/applicator units designed to apply an adhesive material to one side of the layers and feeding them to a bonding zone (1), bonding together the layers in the bonding zone, by winding them over a first bonding calender (18), along a contact arc on the surface of said calender. The method is characterized by determining the breadth of said contact arc by rotating a nip onto which the presser roller (19) is mounted, so as to vary the position of the point of contact between a presser roller (19) and the surface of said bonding calender (18). The bonded film is then taken up.

Abstract: A machine for bonding layers in a film includes first pay-off unit to unwind a first layer of the film, a second pay-off unit to unwind a second layer of the film, a third pay-off unit to unwind a third layer of the film, a bonding zone to join the various layers of film together, and a winding unit including a reel onto which the bonded film is wound, the bonding zone including at least one bonding unit, the pressing roller being fitted with at least an hydraulic actuator which brings it in contact with the layers of film on the bonding calender, the presser roller and the hydraulic actuator being mounted on a nip rotating around the axis of the bonding calendar so as to vary the position of the point of contact between the presser roller and the calender and hence to vary the breadth of the contact arc, along the surface of the calender, in which the layers are overlapped.

Abstract: The machine of the present invention fabricates an undergarment assembly having an elasticized pad support panel secured to inner surfaces of the rear panel and the openable front panel. The machine makes the garment assembly from two half width webs, one of which has a reinforced edge. The machine arrangement includes first and second transversely spaced web paths and components to bond tensioned elastic strands to spaced dots of adhesive located on a third pad supporting web that is secured to adhesive areas applied adjacent, but not in, the garment crotch area with spaced adhesive applied to the innermost surfaces of the rear and front panels. The machine includes devices to add side margin and front panel connecting tapes, and die cutting rolls to cut leg openings in side margins. The machine includes components to divert cull product and deliver flat unfolded product, or longitudinal and transverse folded products for packaging.

Abstract: A packaging material (41) and a process and apparatus for producing the same are disclosed herein, wherein an satisfactorily enhanced gas barrier property is intended to be provided using a grease-proof paper sheet (23). A first layer (16) is formed on an outer surface which will be directed outwardly, when a package or container will be formed from the packaging material, and a second layer (37) is formed on an inner surface which will be directed outwardly, when the package or container will be formed from the packaging material. A substrate and a grease-proof paper layer (23) are provided between the first layer (16) and the second layer (37). At least one of the first and-second layers (16) and (37) is formed from a polymer selected from the group consisting of polyolefins. The grease-proof paper layer (23) has a TAPPI value in a range of 100 to 400 seconds. A polymer is coated on at least one of surfaces of the grease-proof paper layer (23).

Abstract: A method and apparatus for applying granules to a coated asphalt sheet to form at high production speeds with shingles a variegated pattern having uniform pattern edges. Granules of a first color are applied to spaced first areas on a continuously moving tacky asphaltic strip, such as a hot asphalt coated organic or glass fiber mat. Hot asphalt or another adhesive is applied to at least a portion of one or both of the leading and trailing edges of the first areas to provide predetermined uniform edges to tacky second areas between the spaced first areas. Granules of a second color are then deposited on the second areas. The granule coated strip is then cut into shingles. The method may be used to create multiple pattern areas with two or more different colored granules or granule blends.

Abstract: A method and apparatus for fabricating resin mats having a plurality of mat layers is provided. Multiple mat sheets are conveyed between two spaced rollers while being impregnated with resin contained in at least one reservoir formed between the rollers and sheets. A resin feeding system supplies resin to a location between the sheets which substantially corresponds to the longitudinal centerlines of the sheets to ensure adequate impregnation of the mat layers while minimizing any residual resin from adhering to the rollers. Dam members are also positioned between the rollers at the longitudinal sides of the sheets to aid in forming the reservoir(s) and also to maintain an appropriate spacing between the rollers. The roller spacing is configured to permit a predetermined degree of slippage between the rollers and the mat layers.

Abstract: Selected objects such as scallops, are automatically secured in spaced apart bottom-to-bottom relation to elongated strips for subsequent suspension in sea water for a final grow-out period. Linear arrays of these objects, to which adhesive has been applied, are brought into bottom-to-bottom contact with the strip and held there until bonds have formed, following which the strip with attached objects is released from the machine and the procedure is thereafter automatically repeated.

Abstract: A pasting machine in a corrugator which is arranged downstream of at least one single face corrugated cardboard machine and the heating section thereof including hot plates along which the webs to be glued to each other and being arranged on top of each other are guided while being compressed by pressing means being directed towards the hot plates from above, wherein the heating section is divided into at least two sections being arranged in spaced relation to each other in working direction, a glue station is arranged in the intermediate space between the hot plate sections and feeding means for a web being associated with the intermediate space are provided below the working level of the pasting machine.

Abstract: The absorbent laminated sheet is composed of at least two plies (1.9), embossed, constituted essentially of cellulose fibers, bonded together at least partially by means of protruding elements relative to the surface of said plies and pointing inward to the sheet; it is characterized in that the protruding elements (101) are positioned essentially according to lines or combinations of lines reproducing spaced motifs (100), which recur indefinitely.Application as domestic or sanitary paper.

Abstract: To produce panes of laminated glass from two sheets of silicate glass (1, 16) and from an interlayer thickness of a plastic film (8) glued to the two glass sheets (1, 16), the liquid adhesive material intended for the two adhesive layers (2, 17) is applied each time in the form of a coherent and uniform film of a definitive thickness of the upper surface of the glass sheets (1, 16) oriented horizontally. The plastic film (8) is glued to one of the glass sheets (1) provided with the adhesive layer (2). The glass sheet (1) provided with the glued plastic film (8) is turned over so that the glued plastic is oriented downward. The two glass sheets (1, 16) are then juxtaposed by their front edges (20 and 21) and are joined by calendering by means of a pair of cylinders (22, 23) while maintaining an entry opening angle .alpha. of 2.degree. to 6.degree..

Abstract: An embodiment assembly for the impregnation of a continuous length of fibers comprises a convex surface and a non-convex surface over which the length of fibers is drawn under tension. The pressure of impingement on the surfaces alternately separates and consolidates the fibers in sequence during their impregnation with the resin, to obtain a complete and homogeneous impregnation.

Abstract: Disclosed herein is a method for glueing corrugated board and an apparatus for carrying out the same, the method comprising: heating a starch glue to a predetermined temperature range by heat exchange; supplying the starch glue to a glue pan placed in a hot atmosphere of a heat-insulated space so as to maintain the glue in a heated state; feeding a corrugated core sheet and a liner into the heat-insulated space; applying the heated starch glue to ridge portions of the corrugated core sheet; and bonding together the corrugated core sheet and liner.

Abstract: An apparatus for sealing the lap joint formed by the edge of an upper sheet of roofing material overlying the edge of a lower sheet comprises a frame, a handle assembly mounted to the frame, a drive assembly including an endless belt which contacts the roof and is wrapped around a pair of spaced rollers mounted for rotation to the frame, a solvent delivery assembly mounted to the frame for applying solvent material between the overlapping edges of the roofing sheets, and a plurality of spring-biased casters mounted to the frame and extending downwardly into contact with the endless belt. The spring-biased casters are adapted to urge the belt against the upper roofing sheet and into contact with the lower sheet, thereby permitting the solvent material to create a bond therebetween. The spring-biased casters are arranged in an array so that pressure is applied to the entire lower run of the belt which contacts the roof surface.

Abstract: The invention is directed to a method and apparatus for applying a sheet of energy control film to the surface of a window panel wherein the film comprises an adhesive stratum adapted to contact and cause the film the adhere to the panel. The method includes the steps of: submerging the window panel in a filtered demineralized water bath; submerging the energy control sheet and passing it through the bath; submerging a removable protective layer in the bath and superposing it upon the energy control film sheet; and pressing the energy control sheet, while submerged in the bath, into intimate contact with the window panel by squeegeeing across the exposed surface of the removable protective layer.

Abstract: A laminating machine for laminating outer sheets one on each side of an inner sheet, in which all three sheets are moved along in alignment, one spaced above the other, with their edges enclosed by adjustable side covers. The side covers together with the top and bottom sheets form a chamber. Contact adhesive is sprayed on the sheets at the entrance to the chamber. Heater bars span the chamber near the entrance to dry the adhesive. A suction box at the other end of the chamber draws air through the entrance, over the adhesive and heater bars, and then exhausts the solvent laden air. Beyond the suction box, pinch rollers compress the three sheets together to laminate them.

Abstract: An automatic continuous gluing machine for the application of the glue onto he border of a panel being coated is described. The machine eliminates the necessity of pregluing the coating strips because it provides for the application of glue both on the panel and onto the strip, while the panel advances along the plane of operation. The machine is provided with lamps and a jet of hot air to heat the panel and the strip respectively, and pressure rollers to hold the panel and strip adhering to each other.

Abstract: An apparatus and method for elasticizing the leg areas of a conformable garment is disclosed in which a continuous length of web material is continuously fed onto a moving support surface. As the web is fed onto the support surface, oscillating means moves the web in alternating directions in the direction of movement of and opposite to the direction of movement of the web as a whole to form spaced apart relatively flat folds in the web. Continuous, moving elastic ribbon is applied and adhered to the web in a tensioned condition across the folds, the folds are at least partially opened and the elastic is severed opposite the partially opened folds to provide discrete elastic strips attached at desired locations to the web.

Abstract: Disclosed is an improved method of producing corrugated cardboards, in which water suspension of raw starch is used as an adhesive. The raw starch is, after application thereof, heated to form gell or paste with dry steam prepared by reheating low-pressure steam with high-pressure steam. Also, disclosed is an apparatus for practicing the improved method.

Abstract: Reinforced plastic (FRP) panels of substantial width are manufactured continuously in a machine utilizing two stainless steel belts, with an inner belt trained about a driven rotating heating drum and an idler sheave. An outer belt is trained about the inner belt as it passes around the drum and also about three idler sheaves, two being employed to direct the outer belt about the inner belt and the third being employed for tensioning and tracking purposes. An additional idler roll is employed as a nip roll where the two belts join substantially tangent to the heating drum. Both belts may have substantially horizontally flights for application of heat curable resin. A fiberglass or other reinforcement mat is fed into the nip. The resin such as unsaturated polyester may be fed in controlled doctored amounts of liquid form to provide a bead or puddle at the nip into and through which the mat is drawn. The heat of the drum initiates the cure to form a wide controlled thickness reinforced sheet.

Abstract: In the manufacture of a multi-ply fibrous web structure, each of a pair of plies of fibrous web material is provided with a pattern of relatively deep, primary, spot embossments each adherent to the opposite ply and surrounded by a pattern of relatively shallow, secondary, non-adherent spot embossments.

Abstract: In this invention, a continuous elastic ribbon is fed to a diaper assembly station in a stretched condition while, at the same time, an adhesive is continuously applied to the elastic ribbon. Simultaneously, absorbent batts, as well as webs of moisture-impervious backsheet material and moisture-pervious top-sheet material are fed to the diaper assembly station. Further, and simultaneously, while the webs are traveling to the assembly station, a release medium is applied to one of the said webs in selected areas thereof in a manner so as to overlie pre-determined, isolated portions of said stretched, elastic ribbon. At the assembly station, the stretched elastic ribbon is adhered to the moisture-impervious backsheet web along portions of the elastic ribbon which intervene the selected areas of the web where the release medium is located.

Abstract: Apparatus for securing extruded flexible fasteners to thin plastic film by adhesive, attaining high speed production and permitting diverse materials which might not be compatible for fusion bonding to be used in the fasteners and the films, respectively.

Abstract: Method of and apparatus for producing honeycomb paneling comprising the steps of supplying two continuous webs of felted fibrous material, continuously impregnating each web with a liquid resin, continuously applying the webs to the two major faces of a rigid pre-formed honeycomb core having cells extending through its thickness, applying depthwise pressure to the laminated assembly to cause the cell edges to be embedded in the thickness of each web to produce substantial fillets between the webs and cells, and curing the webs in situ to form rigid bonded panel facings of fiber reinforced plastic, and means to carry out the above method steps.

Abstract: The invention is related to a method and apparatus for evenly applying an adhesive or protective spray-coating on f.i. sheets of plastic material and/or cardboard in a non-continuous production system. In such system spray-coating by normally stationary spray-nozzles occurs during the forward stroke of the driving unit and three phases of motion can be discerned. In phase I the motion is non-uniform and accelerated, in phase II it is uniform and in phase III it is again non-uniform, but decelerated.In order to achieve uniform spraying in all three phases, in a first embodiment the spray material is applied intermittently during the non-uniform phases. In another embodiment of the invention the spray-nozzles are moved in a direction opposite to that of the sheets to be sprayed.

Abstract: A mastic composition formed of a substantially homogeneous imporous mixture of a predetermined volume of low-density expanded closed-cell synthetic resin beads and a slurry prepared from calcined gypsum and water wherein the interstitial volume of the expanded beads is not substantially less than the volume of slurry. The substantially homogeneous mixture is self-adhering as a thick layer on an inverted smooth surface and yet separable therefrom as an integral layer, the mastic composition setting to a hard, strong, dimensionally stable, heat- and sound-retardant material. Methods of mixing mastic compositions, and composite structural panels utilizing mastic compositions as well as the methods and apparatus for forming such panels are also disclosed.

Abstract: Improved process for laminating two sheets, the surface of the primary sheet being sensitive to distortion by pressure or friction, by applying an adhesive to the back side of the primary sheet or to the mating side of the secondary sheet, or to both, contacting the mating side of the secondary sheet with the back side of the primary sheet and firmly pressing together the two sheets while avoiding the application of any pressure to the pressure-sensitive face side of the primary sheet until at least 50 percent of the terminal bond strength is developed, by maintaining the primary and secondary sheets taut and applying pressure from the back side of the secondary sheet. Laminates prepared according to the above process, such as tufted carpets comprising a primary backing material stitched with closely spaced tufts of yarn and a secondary backing material adhered thereto with an adhesive, have improved pile lay characteristics.

Abstract: A method and apparatus for producing a sheet molding composite are provided. The sheet molding composite consists of two outer sheets of plastic material between which is sandwiched a moldable material or compound containing fiber-reinforced resin. The resin-containing material is maintained in a deformable, flexible state until it is placed in a mold and subjected to heat, at which time it is cured in the shape of the final molded product. The molding composite is made by depositing a layer of a pre-blended resin-containing material on the upper surface of one of the sheets of plastic material and by then depositing a layer of randomly disposed glass fibers onto this first layer. A second layer of preblended resin-containing material from the same source is also deposited on an upper surface of a second of the plastic sheets.

Abstract: The invention relates to apparatus for pressing a moving web of material against a supporting surface, specially to press a web of corrugated cardboard against a heating part in a corrugated cardboard production system, comprising a stationary supporting surface over which the web of material is moved, also comprising press members acting in operating position via a press surface upon the web of material and adjustment means which transfer the press members from the operative position into an inoperative position and vice versa.