Abstract: A hot melt material coating system (10) is provided, comprising (i) a rotary coater (12) driven by a motor (604); (ii) a rotary coater position, speed and direction indicator (610) operatively connected to the rotary coater and providing a signal representing the position, speed and direction thereof; (iii) a web position, speed and direction indicator (612) operatively connected to the web and providing a signal representing the position, speed and direction thereof; and (iv) a control system (600).

Abstract: A method of applying bonding agents, such as solder pastes and conductive adhesives, to pad sites in the manufacture of electronic circuits uses a paste injection head. A permanent mask with cavity openings is applied around conductive pads on a carrier. The conductive pads correspond to chip attachment sites. The injection head is brought into contact with a surface of the mask, and pressure is applied to a bonding agent in the injection head. The injection head is then moved over the surface of the mask, filling cavity openings with the bonding agent. The injection head is then removed from the surface of the mask. If a solder paste is used, infrared radiation is applied to filled cavity openings to evaporate a paste flux and reflow solder to form solder balls within the cavity openings projecting above the mask. If a conductive adhesive is used, a stencil is applied to the surface of the mask prior to contacting the mask with said injection head.

Abstract: This invention improves a machine that has a squeegee-like blade that wipes across an apertured mask to apply to a printed circuit board solder paste or other conductive mounting material. The apparatus and method of the invention involve reciprocating the blade back and forth transverse to the direction of blade sweep across the mask, during the material-applying sweep of the blade across the mask. The reciprocating movement of the blade, combined with the sweep movement, deposits material onto the printed circuit board with high fidelity and with minimal voids.

Abstract: A non photographic method for making patterns in organic films comprising the sequential step:a) applying in predetermined pattern an imaging layer comprising an agent which is capable of changing the solubility of a solid organic polymer in at least one unpatterned layer laying in contact with solid imaging layer to form the compiled body on a substrate by screen printing with a screen having a plurality of apertures of polygon of which each side is recessed,b) drying the unpatterned layer fully or partially at a predetermined temperature to diffuse said solubility change agent from the imaging layer to the unpatterned dielectric layer(s) andc) removing the patterned imaging layer and the diffusion patterned areas of the unpatterned layer(s) which are both soluble in a predetermined eluant, by washing said compiled body with the predetermined eluant.

Abstract: A station (10) in a manufacturing line (12) for the accurate placement of solder balls (30) on a ball grid array package and for the removal of excess solder balls comprises a substrate (4) having an array of solder pads (7), and an adhesion layer (8) on the solder pads.

Abstract: The invention provides an improved system for masking the free edge of a window gasket in preparation for repainting or refinishing a vehicle. The system includes a method of painting a vehicle which comprises introducing a flexible plastic strip (10) beneath a window sealing gasket (12) in the vicinity of a part of the vehicle to be painted, the plastic strip (10) having a tapered profile in cross section so that as the strip (10) is pressed beneath the gasket (12), the latter is lifted and held in the raised position, masking the edge of the raised gasket (12) and applying paint to the vehicle so that paint reaches the area normally covered by the edge of the gasket. Generally, the strip (10) is a plasticised polymer in the form of a triangular cross section having one side (14) longer than the other two (15, 18).

Abstract: The object of this invention was to construct an apparatus for forming solder deposits on a Surface Mount Device (SMD) pad on a printed circuit or hybrid board. This formed solder deposit is in a defined three-dimensional well having the proper profile and a defined solder gap. The solder before forming can be solid solder or a solder paste. By the placement of a mesh on the surface of the circuit board and the application of a slight positive pressure and tension on the mesh with vibration thereof and subjecting this system to a temperature just low enough to reflow the solder by means of a heat transfer fluid either liquid or gaseous, then cooling the board to solidify the solder, a product results having the desirable properties even when block printed. The use of this apparatus eliminates most of the problems of prior art approaches by providing uniform heating at a very short dwell time at temperature in the presence of the mesh.

Abstract: Solder is deposited on a printed circuit board by melting the solder in a container. The container has a slot for passage of solder, therethrough and control means actuable to alternately allow and prevent passage of solder through the slot. The slot is placed in contact with a stencil and the control means is actuated to allow passage of solder through the slot. The stencil is moved relative to the container in a direction transverse of the slot to deposit solder on the printed circuit board via the stencil.

Abstract: In the case of an apparatus for coating a substrate with a substance, in particular a film with an adhesive, the substance is applied by means of a feeding head (4) through perforations (5) of a template (2) to the substrate in interaction with a backing roll (3) or the like within a coating nip (8). In this arrangement, the backing roll (3) has a screening cover (7) with holes (12). A radially aligned suction stream is generated in the backing roll in a region in and/or after the coating nip (8).

Abstract: A method and apparatus for making banded smoking article wrappers is provided. The apparatus includes a cylindrical rotating applicator that has alternating regions of mesh material and regions of solid material on its outside surface. The applicator allows repetitive patterns of additional slurry to be applied to a continuous web of paper so that the basis weight of the paper is repetitively increased. Such paper, when incorporated into a smoking article, modifies the burn rate characteristics of the article.

Abstract: Disclosed is a screen printing apparatus for filling minute through-holes in a board with conductive paste or the like by screen printing. When screen printing is performed with this screen printing apparatus, the board is placed on a stage through the intermediation of a film which is supplied to the stage by means of adhesive pads. The adhesive pads are brought into contact with the uppermost one of a plurality of stacked films to catch it by adhesion and then transfer the film to a position above the stage. Films are caught one after another by adhesion.

Abstract: An apparatus for continuously applying a liquid to a web has a nozzle having an elongated opening and directed at the web, a strip slidable steplessly along the opening of the nozzle to vary the length thereof, and a foraminous transfer screen displaceable transversely between the web and the nozzle opening and having a back face turned toward the nozzle and a front face turned toward the web. Back and front troughs engage the respective faces of the screen and define therewith back and front chambers while respective back and front steplessly displaceable pistons in each of the troughs engage the respective screen faces and each define an end wall for the respective chamber. The chambers are filled with a treatment liquid so that the liquid will wet the respective face of the screen over an area determined by the position of the pistons and a gas is supplied to the nozzle to blow the gas through the nozzle opening and through the screen and thereby transfer liquid carried by the screen to the web.

Abstract: Apparatus and method for painting an object. The object is affixed to a holder and a reservoir of paint is formed either on or adjacent to the surface of the object. The holder then is tilted sufficiently to cause a paint distribution device, such as a sphere or spinning top, to travel through the pain and across the surface of the object, leaving paint along the travel path of the paint distribution device.

Abstract: A tool for guiding filler material, such as caulking or putty, into a nail hole or similar opening in a structure so that a smooth, unblemished finished surface may be obtained. The tool comprises a thin plate having a plurality of holes therethrough, the holes being of different diameters; and a handle attached to one end of the plate. In use, the plate is positioned so that a hole in the plate is aligned with a nail hole and filler material is urged through the hole in the plate to fill the nail hole. The handle is oriented at a low angle in relation to the plate so that the user may rest his hand on the structure to steady the tool while guiding filler material into an opening. The holes are of different diameter to provide a hole which may be of substantially the same diameter as the nail hole being filled. The holes are perpendicular to a tangential surface have a wider diameter at the bottom of the plate than at the top of the plate.

Abstract: A process for applying a pattern in a contrasting color to textile articles such as socks consists of entering the textile article onto an expandable article support (29), bringing a perforated pattern (38) over the article on the support, causing the support (29) to expand to press the textile article against the interior of the pattern (38), and applying typically by spraying a coloring agent onto the article through the pattern. The support (29) is subsequently contracted and the pattern (38) and then the textile article which a corresponding design has been printed, removed. Apparatus for applying a single color or multicolor pattern to articles such as socks has a carousel (23) carrying a multiple number of article supports (29). The carousel (23) rotates with a stepped movement between printing stations (54).

Abstract: A hole masking apparatus for use in the manufacture of a printed wiring board is disclosed. The apparatus comprises first and second positioning sections provided on a conveying path of a base material at a distance apart for stopping the positioning of the base material having a plurality of through holes at respective given position; a masking device provided to respective positioning sections and having a head to paste a seal while supplying and for pasting the seal on through holes by moving the head in such a manner that the head is positioned on through holes which do not require a plugging up thereof; and a reversing section arranged between the first and the second positioning sections and for reversing face and back of the base material on the conveying path thereof.

Abstract: Apparatus for automatically metalizing the terminal ends of monolithic capacitor chips, which includes an endless conveying tape having formed therein a plurality of first apertures, a plurality of thin, resilient masks, each adapted for receipt in one of the apertures, in co-planar, fixed registration therewith, each mask having at least one second aperture formed therethrough of a size and shape to compliantly receive a chip therein, in an orientation whereby the contact surfaces extend outward from both sides of the tape, a way to for load the masks with a plurality of chips including a cylindrical wall having formed therethrough at least one orifice for registration with the second aperture in the mask, the cylindrical wall adapted for rotation through an inventory of the chips for introduction of the chips into the orifice in transverse specific alignment with their contact surfaces extending outward from the cylindrical wall orifices, a way to accurately move the chip-loaded orifices into registration w

Abstract: A method and device for applying liquid, pasty or plastic substances, in particular thermoplastics, through perforations of a cylinder, belt or the like to a substrate, in particular a textile fabric, wherein the belt or the like encloses an interior space which is evacuated, preferably continuously, during the coating operation.

Abstract: A screen printing machine for imprinting hybrid circuit boards with thick-film pastes of the type including a horizontally movable printing table (12) and a vertically raisable frame (16), wherein a compressed air cleaner (2) is attached to the frontal or end surface (18) of the frame (16). This compressed air cleaner (22) is actuated by means of switches (28, 30), preferably proximity switches, as a function of the side to side movement of the printing table (12) and thus permits an automatized cleaning process for the hybrid circuit board (14).

Abstract: A solder paste stencil printing process and apparatus in which a stencil plate having a porous figure printing area may be used for single component solder paste application. The printing operation is performed by alignment of the stencil pattern figure over the appropriate component substrate pads. With the stencil plate being held in place by downward force, solder paste is dispensed over the stencil plate pattern allowing gravity flow of the paste material into the stencil pattern pores. Excess paste material is squeegeed level to the top surface of the stencil plate and the plate lifted from the substrate surface leaving solder paste in the configured pattern. An associated stencil plate holder matched to the apparatus receiver head allows any number of stencil plate patterns to be made available for solder paste application.

Abstract: A doctor blade for use in an adhesive screen printing apparatus is formed of a main blade member of spring steel along with a U-shaped cap. The cap is ideally formed of a filled nylon material and is attached to the blade member with a silicon RTV compound. The use of this construction results in much more even laydown of adhesive from pattern to pattern and from the left and right hand sides of the screen. Use of the invention also serves to increase screen life.

Abstract: A method and apparatus are provided for applying a bonding material such as solder paste or conductive epoxy to a printed circuit board or other substrate surface upon which one or more other electrical components may already have been premounted. An exemplary embodiment of the invention includes a removable fixture having a screening surface which is generally shaped to conform to the area targeted on the circuit board and which contains holes prepositioned to correspond to electrical contacts of the electrical component to be mounted. The screening surface is connected to a holding frame by at least two vertical sides to allow easy placement of the screening surface on a populated or empty circuit board and to protect other mounted electrical components from damage or displacement during the screening process.

Abstract: The present invention provides a device for protecting a fixture during treatment of the surface on which the fixture is mounted. The fixture itself includes internal elements mounted behind the surface and at least one surface element which is exposed at the surface. The fixture also would normally include a fixture cover mounted on the fixture to cover the internal elements of the fixture and to cover a portion of the surface around the periphery of the fixture, while permitting the surface elements of the fixture to be exposed. In order to protect such a fixture, a protective cover is provided for temporarily replacing the fixture cover during the treatment of the surface. The protective cover includes a portion to cover the internal elements of the fixture to protect them from the surface treatment and a portion to cover the surface elements of the fixture to also protect them from the surface treatment.

Abstract: A roller doctor (squeegee) (1) for applying a fluid material (7), such as substances having different viscosity, coating substances, varnishes, adhesives, pastes, etc. to a substrate (4), has a magnetically chargeable doctor roller (2) and roller supporting members (11). Roller fixing parts (3) are fitted onto the doctor roller (2) and connected by a plug connection (10) to the roller supporting member (11). This leads to a universally usable roller doctor apparatus (1) with a modular structure.

Abstract: A technique for one step solder application through a mask to a printed circuit board (PCB) having pads for surface mountable components and through holes for a leaded components is disclosed wherein the amount of solder deposited on the pads and in the holes is simultaneously, independently controlled as a function of mask thickness, blade hardness and blade to mask angle.

Abstract: An apparatus and a method is disclosed for providing a controlled separation of a structure that has been screened from the screening mask. A dampener pad floats with the mask as the screened structure is being separated from the mask. The mask is held in place by the dampener pad while the structure completely separates from the mask. The dampener pad assembly, then, in a controlled manner, brings the mask back to the original position, and the mask is then ready for the next screening operation.

Abstract: In an on-line manufacturing of sheets of glass provided at their rim with a sealing strip of a polymeric material, a machine is provided, ahead of the sealing strip assembly, to a thin protective film to cover one face of the glass.

Abstract: Powder is deposited onto an underlying flat belt through a selectively shaped cut-out in a stencil assembly. The desired volume for the deposited powder is achieved by defining a closed volume beneath the deformable belt with a support pad having a spacer receiving opening. Vacuum is applied to this closed volume drawing the belt downwardly against the spacer thereby defining this volume. The spacer is removable so that this volume can be changed by changing the spacer.

Abstract: During silk-screen printing, the stencil (3) is stretched as a result of the pressure exerted by the squeeges (6) This results in a distorted pattern on the material (4) to be printed. To eliminate this error, the design (7') in the stencil (3) is predistorted in such a way that a distortion-free printed pattern (8') is obtained.

Abstract: An apparatus and method for preparing conductive bridges to electrically couple discrete electrical conductors arranged on opposed surfaces of a common substrate. The method and apparatus utilized includes subjecting the bore or opening in the substrate to the force of vacuum applied through a vacuum diffusion barrier. The substrate is exposed to the vacuum source through a plurality of spaced-apart bores of relatively small diameter, with the vacuum diffusion layer being in the form of a web of filter paper tracking and moving in synchronism with the substrate. Conventional silk screening techniques are utilized to form the conductors and bridges, with polymer thick conductive fluids being employed as the printing medium. Multiple layers of conductors may be formed, with dual-sided circuitry being applied to the substrate.

Abstract: The method of screen printing with a hot melt foam composition includes providing a screen having the desired pattern to be transferred to a substrate, casting onto the screen a hot melt foam composition and forcing the foam composition through the screen to form the described pattern on the substrate. The method offers a number of advantages including the transfer of large amounts of hot melt inks through the screen, fast printing speeds, printing with highly viscous polymeric or thermosetting materials and control of processing temperatures, among other advantages.

Abstract: A solder paste dispensing assembly provides for the controlled application of a predetermined solder paste pattern to a surface. The surface can be on a printed circuit board, prior to or after the board is mounted onto an assembled product or it can be a portion of the product itself. The surface can be a planar or non-planar surface.

Abstract: A machine for applying a configuration of reinforcement/stiffening or decorative material in powder form to a receiving surface, for subsequent fusing, cooling and pressing to a substrate such as a shoe upper. The machine comprises a deposition station, a heating station and a press station. A tensioned receiving belt receives the configuration of powder through a cut-out in the bottom of a swept screen frame. The receiving belt is supported from beneath during the deposition activity to control the thickness of the powder deposit. The receiving belt is shuttled in a displaceable frame in a series of steps to the successive stations for melting the powder and subsequent cooling and adhesion of the melted powder to the substrate such as an unreinforced shoe upper.

Abstract: Apparatus for applying solder paste to printed circuit boards ("PCB's") in a continuous operation. A drum containing solder paste is positioned over a work station and has an outlet slot through which the solder paste can be discharged onto the surface of a PCB as it advances through the work station. A stencil formed with a desired pattern for application of the solder paste to the PCB is rotatably mounted on the outer surface of the drum and overlies the outlet slot. Gravity, machine vibration, and, if desired, air pressure are effective to discharge the solder paste onto the PCB with the aid of a resilient squeegee pad adjacent the outlet slot. A drive mechanism directly couples the translational movement of the PCB through the work station with the rotational movement of the stencil at the work station.

Abstract: A machine for applying a configuration of reinforcement/stiffening or decorative material in powder form to a receiving surface, for subsequent fusing, cooling and pressing to a substrate such as a shoe upper. The machine comprises a deposition station, a heating station and a press station. A tensioned receiving belt receives the configuration of powder through a cut-out in the bottom of a swept screen frame. The receiving belt is supported from beneath during the deposition activity to control the thickness of the powder deposit. The receiving belt is shuttled in a displaceable frame in a series of steps to the successive stations for melting the powder and subsequent cooling and adhesion of the melted powder to the substrate such as an unreinforced shoe upper.

Abstract: A machine for filling a plurality of via holes in a workpiece comprises a hollow member having an open face; a masking member covering the face and having a plurality of holes which are arranged across the face such that they match the via holes in the workpiece; a diaphragm inside of the hollow member having a front surface that forms a first cavity with the masking member for receiving a high viscosity conductive ink and having a back surface that forms a second cavity with the hollow member; a means for holding the workpiece against the masking member such that their respective holes are aligned; and an orifice in the hollow member for introducing a fluid under pressure into the second cavity and against the back surface of the diaphragm to thereby squeeze a portion of the high viscosity ink through the holes of the masking member and into the holes of the workpiece.

Abstract: An apparatus for applying printed material to a cylindrical object is provided which eliminates the need for individually chucking each object, thereby significantly decreasing production time. The need for a squeegee to transfer the paint or dye onto the cylindrical object is also eliminated, resulting in longer screen life and further decreasing production time. A process for using this improved apparatus is also provided for.

Abstract: A machine for sequentially manufacturing a plurality of reinforced substrates such as shoe uppers, comprising a powder deposition station wherein a stencil assembly applies powder onto an annular receiving belt, the powder being applied in a three-dimensional configuration because of peripheral spacer means arranged on the cut-out between the stencil and the receiving surface. The annular receiving surface is empowered to rotate to an arcuate heating station where the powder is fused by heating elements arranged thereabove and therebelow. The fused powder is then moved to a join and cool station where a substrate is pressed against the fused powder by a transfer means causing it to press against a chill plate therebeneath.

Abstract: An applicator for applying a foamed treating medium to a sheet-material workpiece has a chamber through the open top of which the foamed medium is introduced, and an open bottom through which the foamed medium is discharged towards the workpiece to be treated. To assure that the upper surface of the foamed medium in the chamber is always maintained at a constant level, an equalizing member extends across the open top of the interior of the chamber, and a drive is provided which reciprocates or otherwise moves the equalizing member relative to the open top so as to smooth out any portions of the foamed medium which extend upwardly beyond the desired level.

Abstract: Apparatus for applying a foamed treating medium to the upper side of a substrate has a screen which confines a system of walls defining a chamber open at its underside adjacent to the screen and including a squeegee which serves to force the foamed medium from the interior of the chamber through the interstices of the screen and into the substrate. The chamber accommodates a reciprocable and/or rotary device for shifting the foamed medium therein so that the medium cannot age and change its color and/or other characteristics prior to application to the substrate.

Abstract: Apparatus is provided for handling gasket-forming material. This material is usually supplied in tubular cartridge form and is dispensed to a screen with a porous pattern which shapes the material to the desired gasket-configuration. The material is spread on the screen and forced through to the other side where the gasket pattern is applied to an adjacent transfer surface of a transfer pad. This pad with the pattern on the transfer surface is moved to a mateable surface of a workpiece located on a support spaced from the screen. The gasket-forming material is then transferred to the mateable surface. The gasket-forming material is dispensed from the cartridge with the aid of a cartridge holder having an opening at one end to receive a spout of the cartridge and having a plunger at the other end with a plunger rod extending outwardly therefrom. A fluid-operated cylinder is aligned with the plunger rod and has a piston connected with the rod.

Abstract: A printing apparatus applies material to a carrier through a planar screen aving a pattern including a number of lines substantially parallel to a first direction. The screen and carrier are mounted so material forced through the lines of the screen is deposited on the carrier in the same pattern as the pattern of the screen. A blade having an elongated, straight edge is positioned to force the material through the screen onto the carrier. The blade is supported and actuated so that the blade is displaced in a plane parallel to the plane of the screen and in a second direction. The second direction is adjustable to any angle with respect to the first direction, so that the blade can slide parallel to the lines in the screen.

Abstract: Herein is a modification of a conventional rotary screen printer wherein steel slugs are positioned inside a hollow squeegee rod to line up with heavy print areas. When more magnetic force is applied to the steel slugs, less ink is deposited since the screen is held tighter against a nonporous substrate.

Abstract: Apparatus for coating selected portions of the troughs of a corrugated pipe within an adhesive includes a support disposed within the pipe with a reservoir containing the adhesive disposed on the support. A pump, including a spout, is utilized for supplying the adhesive from the reservoir to a trough of the pipe. A rotatable applicator is supported on the support and contacts the trough of the pipe. The applicator itself is sized so as to fit within the trough, and contacts the adhesive in the trough and spreads the adhesive in the trough upon rotation. A trough shield, supported by the support and disposed in the path of rotation of the applicator, is utilized to prevent the applicator from contacting selected portions of the trough. A locator head is also disposed on the support and provides a way for aligning the spout, the applicator, and the trough shield with the trough.

Abstract: The walls 41 (FIG. 4) of thru holes 11 in a printed wiring board substrate 12 are coated with a liquid 24 by inserting fingers 22 into the thru holes. Each of the fingers has a diameter slightly less than the diameter of the associated thru hole and has a length no greater than the thickness of the substrate 12. After ink 24 has been applied to the top surface of the substrate, the inserted fingers 22 are withdrawn, thereby drawing the ink down into the thru holes and coating the walls 41. In another embodiment, fingers 62 are aligned with selected portions 52 of an edge 55 of the substrate 50 to coat the portions of the edge as the fingers are moved by the edge after the heads of the fingers have been coated with the ink 24.

Abstract: A method is described for the continuous manufacture of inlaid vinyl sheeting using different colored plastisols and rotary screen printing equipment. The printing equipment comprises an unwind stand, an accumulator, a plurality of printing stations, a coating station, an oven, a second accumulator, and a wind up stand. Optionally an embossing station may also be used. Each printing station comprises (i) a rotary screen through which a different colored plastisol is squeezed to form a colored pattern on a base layer and (ii) a hot air dryer for partially drying the plastisol deposited on the base layer. In accordance with the invention, the viscosity of the plastisol and the rate of drying is such that plugs of plastisol are deposited on the base layer by each screen to form discrete portions of the total pattern created. Several different rotary screens are used to deposit these plugs of colored plastisols on the base layer so as to build up a pattern from the different colored plastisols.

Abstract: Apparatus is provided for applying a bead of gasket-forming material to a mateable surface of a workpiece. The apparatus includes a source of gasket-forming material and a screen having a predetermined pattern conforming to the desired bead of the gasket-forming material. A spreader applies the gasket-forming material to one side of the screen and the gasket pattern is then formed on an adjacent transfer surface of a transfer pad on the opposite side of the screen. Means are provided for moving the pad with the pattern on the transfer surface and engaging it with the mateable surface of a workpiece mounted on a support spaced from the screen, thereby forming a bead of gasket-forming material on the mateable surface. The transfer surface is moved through an arc of 180.degree. when moving between the screen and the workpiece surface.

Abstract: Apparatus is provided for applying a bead of gasket-forming material to a mateable surface of a workpiece. The apparatus includes a source of gasket-forming material and a screen having a predetermined pattern conforming to the desired bead of the gasket-forming material. A spreader applies the gasket-forming material to one side of the screen and the gasket pattern is then formed on an adjacent transfer surface of a transfer pad on the opposite side of the screen. Means are provided for moving the pad with the pattern on the transfer surface and engaging it with the mateable surface of a workpiece mounted on a support spaced from the screen, thereby forming a bead of gasket-forming material on the mateable surface. The transfer surface is moved through an arc of 180.degree. when moving between the screen and the workpiece surface.

Abstract: Abrasive grains are bound to a flexible support by a pattern of resin applied by means of a curved stencil having a wall thickness of 0.08 to 1 mm and having holes with a diameter of 0.05 to 3 mm, the total hole area amounting to 5 to 50% of the area of the stencil. A top binding agent is applied before or after the drying or hardening of the resin.

Abstract: Apparatus is provided for applying a bead of gasket-forming material to a mateable surface of a workpiece. The apparatus includes a source of gasket-forming material and a screen having a predetermined pattern conforming to the desired bead of the gasket-forming material. A spreader applies the gasket-forming material to one side of the screen and the gasket pattern is then formed on an adjacent transfer surface of a transfer pad on the opposite side of the screen. Means are provided for moving the pad with the pattern on the transfer surface and engaging it with the mateable surface of a workpiece mounted on a support spaced from the screen, thereby forming a bead of gasket-forming material on the mateable surface. The transfer surface is moved through an arc of 180.degree. when moving from the screen to the workpiece surface. If desired, two of the transfer surfaces can be positioned on opposite sides of the transfer pad.