Abstract: Device (1) for manufacturing plastics films from a plastics melt and having a roll frame (3) in which at least one chill roll (2) is rotatably mounted, an exchangeable part of the device (1), for pressing the plastics melt against the chill roll (2) mounted in the roll frame (3) and for chilling the same, being attachable to the roll frame (3) and for the manufacture of plastics films with different characteristics, various modules (10) being provided as the exchangeable part, so that the device (1) allows different plastics films to be made by means of different manufacturing methods.

Abstract: Device (1) for use in a roll frame (10) for the manufacture of a plastics film, having a continuous band (2), looped around at least two deflection rolls (3, 3′), for pressing the plastics film against a roll (9) of the roll frame (10), the two deflection rolls (3) being rotatably mounted on both sides in lateral bearing devices (5, 5′) and fastening means are provided for fixing the deflection rolls (3, 3′) in a bearing device (5) and the other bearing device (5′) is pivotably mounted for the exchange of the continuous band (2); and a process for changing a continuous band (2) for pressing a plastics film against a roll (9) and for cooling the same, which is looped at least around two deflection rolls (3) rotatably mounted in lateral bearing devices (5, 5′), the deflection rolls (3, 3′) being fixed in a bearing device (5). Fastening means of the other bearing device (5′) are released and the other bearing device (5′) is pivoted.

Abstract: In a clamping cylinder for receiving and fixing a cylindrical stamping mold with a structured surface, for instance for the production of holograms, comprising an outer cylinder casing which is closed by frontal covers and mounted on a shaft, it is provided that the cylinder casing is equipped with a plurality of bores, which are connected with compressed-air lines that lead through the interior of the cylinder casing and are connectable to a compressed-air source, and that, inside the cylinder casing, a cavity is provided for a temperature control medium, which circulates via inlets and outlets.

Abstract: An embossing roll includes a roll body and a plurality of plates which are removably secured to the roll body. Each plate includes an outer surface which is provided with an embossing pattern. The plates can be secured to the roll body by vacuum and/or mechanical devices.

Abstract: The invention relates to a process and an installation for the production of pressed-stock boards in a continuous sequence. The invention includes forming and transporting the mat of pressed stock on the molding and charging belt in a space bounded at the longitudinal sides. Two upright side supporting bands on the molding and charging belt run along and guide the pressed stock or the mat of pressed stock in such a way as to limit its width from the scattering station up to compaction in the prepress. The height of these side supporting bands correspond to the changing height of the press nip. The installation includes two side supporting bands arranged upright on the molding and charging belt, on both longitudinal sides. Supporting rollers bear against the side supporting bands in the region from the scattering station up to the prepress.

Abstract: A roll forming apparatus for rolling selected materials around a cylindrical core. The apparatus comprises a core support, a roll support device, and a material supply device. The core support is used to support the cylindrical core. The core support has an associated core rotation device for rotating the core about a core rotation axis at a controllable rotation rate. The roll support device supports a plurality of forming rolls positioned to surround the core about the core rotation axis. The roll support device has a roll control mechanism operable to both radially position the plurality of forming rolls relative to the core rotation axis and to constrain the plurality of forming rolls to be equally spaced from the core rotation axis in order to provide integrated adjustment of the plurality of forming rolls to control a radial dimension of a substantially symmetrical forming space defined by the plurality of forming rolls.

Abstract: A device for manufacturing tubular fibre includes an extrusion head through which a polymer and a biologically active material flow. The biologically active material is encapsulated within compartments formed in the fibre. Partial solidification is caused by structure, such as a coagulation bath, adjacent the extrusion head. This prevents breakage of the fibre as it leaves the head.

Abstract: An adjustable roller assembly for producing sheeted food products of an accurate thickness which includes an adjustable roller positioned adjacent a second roller. The adjustable roller is held in bearings which are eccentrically mounted in a pair of turnable members which are supported by a first bearing. The axis of rotation of the adjustable roller is offset from the axis of rotation of the turnable members. The polar orientation of the turnable members is continuously adjustable to provide the desired thickness of the sheeted food product. Preferably, the orientation of the turnable member at one end of the adjustable roller is adjustable independently of the roller orientation of the other turnable member.

Abstract: A corrugating roller unit is moved smoothly between a first reference plane and a second reference plane at different heights by a roll-out apparatus having a set of moving support device. A first moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the first reference plane. A second moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the second reference plane. A positioning device keeps the second moving support device in contact with the second reference plane when the second moving support device is providing the support for the corrugating roller unit. When the second moving support device moves the second reference plane to the first reference plane, the positioning device prevents the second moving support device from restricting movement of the corrugating roller unit.

Abstract: A calender for thermoplastic material sheets has a frame (1) with rolls (8, 9, 14) for smoothing and cooling the thermoplastic material sheets. The rolls (8, 9, 14) are coupled with the frame (1). The roll (8) is held rotatably stationary. The rotatable roll (9) is radially adjustable with respect to the stationary roll (8). Additionally, the adjustable roll (14) is circumferenitially adjustable around the axis of rotation (X) of the stationary roll by guide cars (15, 16). The guide cars (15, 16) are provided at both ends on circular running paths of guide rails (2′, 2″, 3′, 3″). The guide rails (2′, 2″, 3′, 3″) are connected to the frame or are part of it. Accordingly, a rigid support is achieved for the adjustable roll (14). Furthermore, an advantageous ease of access to the area of intake of the material sheet from the sheet die (B) into the calender is achieved.

Abstract: Tool rolls and methods of using the tool rolls to manufacture articles with one or more structured surfaces are disclosed. The tool rolls include an outer surface that, when used in connection with materials of the proper viscosity or formability, can form a structured surface on an article. Because the tools are manufactured in roll-form, they can be advantageously used in continuous manufacturing processes. Alternatively, discrete articles may be processed using the tool rolls. The tool rolls are constructed of a cylindrical base roll and are wrapped with one or more continuous wires in a helical pattern. The wires are used, in essence, to form a structured surface on the tool roll that is the negative of the structured surface to be formed on the articles processed using the tool roll. One of the wires wound around the base roll may include a plurality of voids formed therein that, when wound in helical coils about the base roll, form a plurality of mold cavities on the outer surface of the tool roll.

Abstract: The forming tool with a special structuring surface includes a reusable ceramic base tool and a replaceable metallic forming member releasably attached to the base tool and provided with a structuring surface for forming a structure in the plate glass. When the comparatively rapidly wearing forming member must be replaced, especially when structuring to form structures with sharp edges, only replacement of the metallic forming member is necessary. This two-component structure also provides additional freedom regarding selection of materials for the base tool and the structuring surface. Thus the base tool can have a comparatively smaller thermal expansion and/or conductivity and the forming member can have a comparatively higher thermal conductivity.

Abstract: The device with modular structures for the relief impression or cuts onto food pastes and similar, comprises a plurality of separate parts, of the kind of half-bands, or full-coating structures, like jackets, prerferably cut, and that may be replaced and assembled for setting up again the diameter of the cylinder of the shaping group of a the machine working the paste, or even for realizing cylinders of dimensions different from the original one, for realizing "raviolis" or different products, of differentiated dimensions.

Abstract: Molding apparatus and method for continuous molding of features integral with a base, such as in the production of fastener elements for hook-and-loop type touch fasteners, e.g. by the Fischer process, employs a mold roll formed of rings that have coolant passages formed within the ring components themselves for substantially direct contact with cooling liquid. Axial tie rods compress the mold rings together, contributing to the sealing of the coolant passages and the stiffness of the mold roll. Other types of sealing are disclosed. Mold cavities and cooling passages formed by photo-chemical etching, laser machining and other techniques are disclosed. Various machines and methods taking unique advantage of these features are disclosed, including ring alignment methods.

Abstract: An elastomeric extruding apparatus having a head, to which a plurality of extruders are coupled, and a rotatable, driven roller disposed at the front end of the head so as to form an extruding space between the roller and the head. The head is provided with a passage arrangement, through which the elastomeric materials pass, eventually opening into the extruding space. The extruding space has a uniform chamber extending from the opening of the passage arrangement and a finishing chamber communicating with the uniform chamber for shaping the elastomer into its final sectional shape.

Abstract: A spreading roll having a simplified and inexpensive configuration is provided. The spreading roll includes a curved shaft and several successive roll segments mounted on the curved shaft. Rolling bearings are supported by a sleeve around the shaft and rotatably support the roll segments. The ends of the roll segments are connected together by coupling elements formed by a rubber ring, an inner sleeve situated inside the ring and metal bracing sleeves situated at the corners on the outer circumference of the rubber ring. As the spreading roll rotates, the rubber rings of the coupling elements yield and the bracing sleeves form a tight joint with the roll segments.

Abstract: To prevent an extruding material from moving in and between an extruder body and a contact surface of side guides and to provide automation of adjustment of a sheet width. A roller head extruder in which a pair of calendar rolls 8 are disposed forwardly of a material extruding opening 4 of an extruder body 1, a pair of left and right side guides 9 are disposed so that a material extruded from said extruding opening 4 is molded into a sheet form by the calendar rolls 8, wherein said side guides 9 can be automatically moved in a direction of the sheet width by a moving cylinder 19 and secured to the front surface of a flange portion 5 of the extruder body 1 by a fastening force releasable fastening means. The fastening force is added by a spring 15 and the fastening force is released by a jack 18. The fastening force urges the side guides 9 against the extruder body 1 so that no extruding material flows between the side guides 9 and the extruder body 1.

Abstract: A sheeter head having a pair of counterrotating internally-driven sheeter rollers is disclosed. The sheeting rollers each include an independent internal drive motor and gear box affixed to a nonrotating shaft, along with a nonrotating idle shaft on an opposite end of the roller. The speeds of the drive motors are controlled by an external device such as an inverter speed control. The nonrotating shafts, in conjunction with the absence of any external drive mechanism, allow for sanitary operation, easy clean-up, and a simple and efficient adjustment mechanism for varying a pinch point between the rollers. The preferred adjustment mechanism includes a fixed front roller and horizontal slide plates connected to the axles of a back roller, the slide plate having pegs which slide in associated grooves. One of the grooves is preferably wider than the other to help prevent binding during an adjustment operation.

Abstract: A dough sheeting system comprising a cutter assembly for pulling and cutting elongated chunks of dough from a hopper containing dough is disclosed. A receiving surface is disposed beneath the cutter assembly. A motor advances the receiving surface in a direction of dough feed. A calendar assembly for receives dough output by the receiving surface and outputs a sheet of dough. A level sensor for monitoring the height of accumulated dough at the input of the calendar assembly and for producing a signal when the input exceeds a predetermined level. The motor is responsive to the signal from the level sensor to stop advancing the receiving surface when the level exceeds the predetermined level and is responsive to the signal when the height is reduced.

Abstract: In one preferred embodiment, an apparatus for embossing diffraction patterns on a sheet, the apparatus including: an elongate, rotatable, cylindrical roll; a plurality of arcuate embossing shim segments disposed on the surface of the roll; and the embossing shim segments being rearrangeable and/or replaceable to change the pattern embossed on the sheet. In another aspect of the invention, a method of slitting, into a plurality of strips, an embossed sheet, each strip having thereon a plurality of rows of diffraction grating segments vertically spaced apart a multiple of a selected distance, the method including: providing on a portion of the sheet a plurality of index marks vertically spaced apart a multiple of the selected distance, the index marks being provided for the alignment of cutting apparatus such that the sheet will be slit so that a selected row of the segments will be disposed a desired distance from an edge of each strip.

Abstract: A quick die change capability is provided to a pellet mill by means of a fixture spider which can be attached to the pelleting die and to the rollers for a unitized roller/die cartridge. By employment of quick acting captive die clamps, as well as push-pull jacks, assembly and dismantling of the die/roller cartridge in the mill is simplified. Three axis adjustability of the fixture spider enhances ease of alignment.

Abstract: A method and apparatus for rapid exchanging of calender rollers 350,352 for a calendering apparatus 302 is disclosed. The apparatus 302 has two or more generally cylindrical calender rollers 350,352 which are clamped and supported at each end by a rotatable support 314,316. A pair of the supports 314,316 are axially aligned and movable relative to the other axially aligned support. The method of exchanging rollers 350,352 includes the step of unclamping a roller 350 or 352 by increasing the spacing between the first and second rotatable supports 314,316, removing the roller 350,352, and clamping a different calender roller 350,352 between the first and second supports 314,316 by decreasing the spacing between them and engaging the respective ends of the different roller 350,352 with the first and second supports 314,316. This apparatus and method greatly facilitates rapid calender roller changeover and is particularly useful in the tire building art.

Abstract: A coupling construction for coupling an extended-nip press roll including a loading shoe for loading a belt mantle to press the belt mantle toward a back-up roll. The coupling construction includes pivotally linked tie members for detachably connecting the bearing housings of the extended-nip press roll and the back-up roll so that the tie members are connected with either bearing housing and the roll in the other bearing housing is serviceable.

Abstract: A safety device for the roll space within a calender or other roll machine is disclosed. The rolls when rotating, excite oscillations in the beam at the resonant frequency of the beam. This can occur during start-up or during normal operation. The safety device of the present invention comprises a beam and additional mass that is oscillatorily suspended from the beam in order to reduce the amplitude of the beam oscillations at the beam resonant frequency. In addition, a damping element between additional mass and the beam is used to reduce any undesired oscillations due to newly created resonant frequencies introduced into the system.

Abstract: A rolling mill for use in a noodle making apparatus, of the type adapted for rolling a noodle sheet of a predetermined width, includes a plurality of rolling sections arranged in a set and each having pairs of upper and lower rolls. The set includes a pair of grooved rolls for pressingly forming a plurality of mountain and valley portions on the noodle sheet parallel to the extending longitudinal direction thereof, and at least one pair of gear-type rolls for pressingly forming a plurality of mountain and valley portions on the noodle sheet parallel to the transverse direction thereof.

Abstract: Apparatus for reconfiguring at least three finishing rolls in a plastic sheet fabricating sheetline includes a base, a pair of spaced upright support structures, and pairs of first and second spaced support assemblies. The upright support structures are mounted on the base and support a center one of the rolls in a stationary position therebetween and for rotation about a first axis. The first support assemblies support a first outer one of the rolls therebetween for rotation about a second axis and are mounted to the support structures for permitting angularly adjustable movement of the first outer roll relative to the center roll about the first axis to reconfigure the angular position of the first outer roll relative to the center roll.

Abstract: A quantitative flour feeding unit of a noodle making machine which can easily be exchanged with another one for making a different kind of noodle using a different kind of flour including a support platform on which a hopper and a rotational driving mechanism are mounted to quantitatively feeding the flour stored in the hopper to a flour kneading unit. The support platform is removably mounted on a housing of the noodle making machine by a position determining unit to enable the exchange with the position determining unit including a V-shaped groove formed at one corner of the support platform and a stationary knob disposed on the support platform at another diametrically located platform corner. The noodle making machine has a unit for transmitting the power generated by a motor to the rotational driving mechanism and a unit for setting and indicating what kind of flour is being used at present.

Abstract: An apparatus for perforating packaging film which includes a cylindrical roller which is rotatable about a longitudinal axis. Bearings are mounted to each end of the roller to facilitate rotation. A number of longitudinal, circumferentially spaced grooves are formed in the outer surface of the roller. Perforation pin holders are removably and adjustably mounted in the grooves. The perforating pins are removably or permanently mounted on the holder.

Abstract: An apparatus is provided for compressing a material in a mold. The apparatus includes a frame having a first portion and a second portion. The apparatus also includes a roller coupled to the first portion of the frame for compressing the material in the mold, and a support plate coupled to the second portion of the frame for receiving the mold thereon to position the mold relative to the compression roller. The apparatus further includes an apparatus for varying the distance between the roller and the support plate so that the roller applies a compressive force to the material. A drive mechanism is coupled to the support plate for moving the support plate relative to the roller in a direction normal to the compressive force applied by the roller.

Abstract: An apparatus is provided for compressing a material in a mold. The apparatus includes a frame having a first portion and a second portion. The apparatus also includes a roller coupled to the first portion of the frame for compressing the material in the mold, and a support plate coupled to the second portion of the frame for receiving the mold thereon to position the mold relative to the compression roller. The apparatus further includes an apparatus for varying the distance between the roller and the support plate so that the roller applies a compressive force to the material. A drive mechanism is coupled to the support plate for moving the support plate relative to the roller in a direction normal to the compressive force applied by the roller.

Abstract: A roll stamper for forming a substrate sheet for information recording mediums has a flexible stamper member having a pattern corresponding to a preformat for an information recording medium; a first fixing member and a second fixing member respectively joined to both ends of the stamper member in an integral form; and a pair of fit grooves capable of fittingly receiving the fixing members, formed in the periphery of a specular roll substrate in parallel to the axial direction of the specular roll substrate. The fixing members are so fitted to the fit grooves that the stamper member is fixed along the periphery of the specular roll substrate between the fit grooves.The first fixing member has a first member showing a coefficient of linear expansion substantially equal to the coefficient of linear expansion of the stamper member and a second member having a larger coefficient of linear expansion than the coefficient of linear expansion of the first member.

Abstract: A roll stamper for forming an information recording medium substrate has a stamper member having a pattern corresponding to a pre-format for an information recording medium formed in its obverse surface, fixation members fixed to both end portions of a reverse surface of the stamper so as to be integral with the stamper member, and fit grooves formed in a circumferential surface of a specular roll base parallel to the axis of the specular roll base. The fixation members are fitted in the fit grooves, and the stamper member is fixed on the circumferential surface of the specular roll base. The roll stamper also includes a mechanism for applying a tensile force to the stamper member. This roll stamper is used in an apparatus having an extruder for melting and extruding a resin to form a resin sheet and a specular roll facing the roll stamper to continuously form the information recording medium substrate.

Abstract: A rotary die moulding machine used in the commercial production of baked goods, which includes plastic inserts for the moulding cavities on the die roll, is disclosed. Each moulding cavity is formed as a bore with a first wall section extending inwardly from the outer surface of the die roll a depth corresponding to the desired thickness of the baked good being moulded, and a second wall section with an undercut edge beneath the first wall section. The plastic insert has a face portion with a designed face for imprinting a design into the dough, and has a base portion with a protruding edge which conforms to the undercut edge of the second wall section. The plastic insert fits snugly by snap action into the moulding cavity. The plastic insert further provides improved release of bakery dough. The plastic insert and the moulding cavity may be modified to accommodate different shapes, thicknesses and designs of commercially produced cookies, biscuits and other baked goods.

Abstract: A device for controlling the thickness of a sheet in calendering includes a thickness measuring unit for measuring the thickness of the sheet immediately after it has been formed by a pair of calender rolls, and a roll adjusting unit for moving at least one of the pair of calender rolls toward and away from the other calender roll. The device further includes a detection unit for detecting change in distance between the axes of the pair of calender rolls, and a control device for comparing the measured thickness of the sheet with a target thickness to obtain a difference therebetween. The control device then calculates a gap adjusting value on the basis of the difference, and compares the change in distance between the axes of the rolls detected by the detection unit with the calculated gap adjusting value. When these values become equal, the control device stops the movement of the one calender roll to make the thickness of the sheet equal to the target thickness.

Abstract: A method of manufacturing a rubber sheet with rugged patterns formed on one side surface portion includes the step of preparing an apparatus including a rotating roll having rugged patterns, a member having an arcuate inner surface radially spaced apart from an outer peripheral surface of the rotating roll, and a die. The arcuate inner surface is recessed away from the rotating roll and defines an arcuate compartment chamber together with the outer peripheral surface of the rotating roll. The arcuate compartment chamber, has an inlet port and an outlet port. The die is placed in such a manner to adjoin to the outlet port portion of the compartment chamber, the die having an inner edge portion which is radially spaced apart from the outer peripheral surface of the rotating roll and defines an extrusive clearance together with the outer peripheral surface.

Abstract: An apparatus is disclosed for producing granules or pastils from a flowable material of varying viscosity wherein material is supplied to a pressing nip between a rotating hollow roll (1) having internal teeth and an externally toothed ejection roll (2) in engagement with said hollow roll. Provided in the hollow roll (1) are bores (5) which extend from the respective teeth bottoms of the internal toothing to the outer side of the hollow roll (1) and through which the material is expelled on engagement of the ejection roll (2) and deposited in the form of pastils or granules on a cooling surface (13). On the outer periphery of the hollow roll (1) a jacket tube (3) may be positioned the jacket tube having bores which align with the bores (5) of the hollow roll (1), the jacket bores also having a reduced cross-section compared with the bores of the hollow roll to permit adaption of the apparatus to the viscosity of the flowable material to be processed.

Abstract: An embossing apparatus in an extrusion line for the production of sheet extrusions like vinyl siding, can include a revolver above the backing roll and supported in a pair of cradles so that selected embossing rolls can be juxtaposed with the backing roll and can define the embossing gap therewith. The revolver is indexed in position by pneumatically-operated locking members on the cradles. The revolver allows embossing roll change on the fly, if desired.

Abstract: A roll-stamper for forming substrates of an information-recording medium includes at least one stamper being fastened along a peripheral face of a mirror roller, carrying on a surface thereof patterns each corresponding to a preformat for an information recording medium, also having stoppers fixed along both edges on the reverse side thereof, and being fastened to the mirror roller by inserting the stoppers respectively into negative stopping-grooves cut into the mirror roller in parallel with the axis of the mirror roller.

Abstract: Apparatus for producing sheets or foils of plastic or rubber mixtures includes a calender having two rollers rotatably supported by spaced calender stands with a gap between the rollers and an extruder having an extruder head with wide mouth for extruding a sheet of material into the roller gap of the calender. One part of the extruder head is fixed while another part is pivoted for movement relative to the fixed part by a cylinder-piston unit. The calender is stationary while the extruder is mounted by screws, providing vertical adjustment, on a base having wheels for horizontal movement of the extruder toward and away from the calender to vary the distance between the extruder mouth and the roller gap of the calender. The base of the extruder is coupled with the calender by a threaded spindle rotatable through a reducing drive by a reversible motor to move the extruder toward and away from the calender.

Abstract: An apparatus for bending a laminated thermoplastic sheet without displacing the lamina relative to one another includes a clamp which functions to hold the sheet during the bending procedure. A support is disposed adjacent the clamp and has a curved surface for forming a bend in the sheet and a flat surface which constitutes an abutment for the part of the sheet being bent. The support is adjustable to vary the angle of bending. A bending device for the sheet comprises a carriage having a bending roller, and a ram whose size approximates that of the flat abutment surface. The sheet is clamped with a portion thereof projecting freely above the flat abutment surface and heated. The bending roller thereupon forces the sheet against the curved surface to bend the sheet and then moves across the projecting portion of the sheet to urge such portion into engagement with the flat abutment surface.

Abstract: An extruder has a screw rotatable in a housing and an extrusion head having an upper part bolted to the housing and a lower part hingedly connected to the housing for movement between a closed operative position and an open position. The upper part of the extrusion head is located above the screw so that the screw can be removed from the housing when the lower extrusion head part is swung to open position and without removing the upper extrusion head part from the housing. The two extrusion head parts define between them a flow passage directed toward the upper roller of a calender. A movable lip on the lower extrusion head part faces, and is spaced from, the upper calender roller to define a variable gap through which extruded material must pass before reaching the narrowest part of the gap between the calender rollers. The lip is either pivoted at an upper edge or is slidable toward and away from the upper calender roller to vary the width of the gap formed between the lip and the upper calender roller.

Abstract: A mouthpiece discriminating device for a rotary roll extruder serves to distinguish different kinds of exchangeable mouthpieces from one another without relying upon visual inspection. The device includes a plurality of magnets embedded in the mouthpiece along its edge and aligned with each other in a direction of passage for the mouthpiece. The poles of the magnets are arranged as coded information uniquely determined in accordance with kind of the mouthpiece. A detector element provided along the passage detects the magnetic fields of the magnets upon movement of the mouthpiece along the passage. A signal processing unit discriminates the kind of the mouthpiece based on output signals of the detector element representing the magnetic fields detected.

Abstract: A calender assembly having at least two calender rollers mounted on axles and which jointly define a calendering nip with at least one of the rollers being mounted for rotation in a support column. Each roller includes a roller axle and a roller core and at least one of the rollers is provided with a removable shell. The axle of the roller provided with the shell is provided with a bearing member acted upon by a plurality of bearing body portions. Adjustment devices are provided for displacing the bearing body portions towards and away from the bearing member. Such movement of the body portions away from the bearing member defines an aperture through which the shell on the roller can be removed and a replacement shell inserted.

Abstract: A rotary molding apparatus has a die roll and a split clamping pillow block structure of self-centering structure supporting the opposite shaft ends of the die roll. The split pillow block has a pivotally mounted portion and a device for locking that portion when the die roll is in operation. A feed roller is mounted on upright arms which are urged toward the die roll. The arms carry doctor blade structure between the feed roller and the die roll and the doctor blade is biased toward the die roll. A fluent material supply hopper cooperates with the feed roller and there is a guide structure for effecting movement of the hopper between the feed roller cooperation position and a backed-off position. A magazine is provied for storing a plurality of die rolls and a mechanism is provided for selecting any die roll from the magazine and for transporting such die roll from the magazine into working position in the pillow blocks and for selectively returning the die roll to the magazine.

Abstract: An apparatus and method for forming a strip of elastomeric material which is extruded onto a rotating roller where it is initially shaped by a die plate and then finally shaped by a calender roll positioned downstream from the die plate and in close proximity to the surface of the roller providing a finishing gap for finally shaping the strip of elastomeric material. The calender roll may be positioned on the opposite side of the roller from the position the elastomeric material is extruded onto the roller whereby the calender roll resists forces tending to bend the roller. The extruder screw may have a downstream end adjacent the roller for reducing the pressure and for self-cleaning the apparatus.

Abstract: A machine for continuously stamping at least one advancing product strip has a stamping wheel, the rotatable wheel having at least one heated stamping die positioned about its outer circumference, and has a rotatable shaft for driving the stamping wheel and pairs of rotatable synchronizing rollers affixed on rotatable shafts upstream and downstream of the stamping wheel in the line of the advancing strip for positioning the advancing strip for stamping and for delivering the advancing stamped strip for cutting. The stamping wheel driving shaft and the shafts of the synchronizing rollers are connected to a motor for being driven in synchronism so the stamping wheel and rollers have a peripheral speed equal to the linear speed of advance of the product strip.

Abstract: In extrusion apparatus for producing a continuous film of thermoplastic material, either as part of an extrusion coating or laminating process or to cast a continuous film, a chill roll which receives the film directly from the extruder is mounted on a wheeled carriage whereon it can be moved lengthwise into and out of operating relation with the other components of the apparatus without requiring lifting thereof or of other parts of the apparatus. The carriage may be proportioned to move directly between the apparatus in which it is to be used and the floor of the mill, or it may be mounted on a separate wheeled cart on which it is transported to and from the extrusion apparatus. Particularly in the latter case, provision is made for both vertical and lateral adjustment of the base structure on which the carriage is supported in its operating relation with the extruder.

Abstract: Apparatus for reconfiguring at least three finishing rolls in a plastic sheet fabricating sheetline includes a base, a pair of spaced upright support structures, and pairs of first and second spaced support assemblies. The upright support structures are mounted on the base and support a center one of the rolls in a stationary position therebetween and for totation about a first axis. The first support assemblies support a first outer one of the rolls therebetween for rotation about a second axis and are mounted to the support structures for permitting angularly adjustable movement of the first outer roll relative to the center roll about the first axis to reconfigure the angular position of the first outer roll relative to the center roll.

Abstract: A roller head opening and closing apparatus in a roller head extruder includes parallel upper and lower rollers disposed at an extrudate outlet end of the extruder and having axes extending orthogonal to the longitudinal axis of the extruder. Two frames are rotatably journaled at opposite ends of the rollers and can pivot about the axis of the lower roller. Actuators pivot the frames from a position in which the roller axes lie in the same vertical plane to a position in which the upper roller is swung away from the extrudate outlet so that a maintenance space is created between the extrudate outlet and the upper roller. This permits the use of a stationary electric motor for driving the lower roller, and so avoids the need for electrical contacts which compensate for motor movement.

Abstract: The invention relates to a process and apparatus for processing elastomeric material in particular plastic, rubber and a mixture thereof in roller-head-apparatus in which the material to be processed is plasticized and homogenized in an extruder, extruded from an extrusion head provided on the extruder and then is led through an aperture formed between two rollers. It is the object of the present invention, with an especially simple extrusion head in a roller-head-apparatus to produce uniform and dimensionally exact sheets or foils of different thicknesses without changing structural parts. The invention achieves this in that material formed in plate form by parallel outlet surfaces of the extruder head is led through an aperture space formed between a concave cylindrical surface of a stationary forming tool and the circumferential surface of one of the rollers of the calender before the material enters the space between the two calender rollers.