Abstract: A machine for making covered paper or cardboard boxes which have a curvilinear outline includes elements for forming a curvilinear box (6) and a covering station (R) operating in conjunction with elements for the linear feed of a pre-glued covering sheet (12), in such a way that the sheet (12) is connected to the outer wall of the box (6).

Abstract: The invention relates to a method for producing a can body (2) which is characterized in that a film piece (3c) is cut from a film web (3b), said film piece (3c) is wound up on a winding spindle (7) from its front edge to its rear edge and is maintained on the winding spindle (7) so that it somewhat overlaps. The film piece (3c) is transferred from the winding spindle (7) to a concave inner surface (11a) and the film areas of the front edge and the rear edge resting against each other are sealed with each other on the concave inner surface (11a) in the area of overlapping (14). According to the invention, a closed film piece (3d) can be transferred without complication onto a can body (2), thereby conferring on the can body (2) the function of the stable structure and on the film piece (3d) the function of the décor or the inner barrier in such a manner that both functions can be optimized in a substantially independent manner.

Abstract: A web winding apparatus comprises one or more wind mandrels (3) each supported for rotation about its central axis, and a core forming apparatus (1) for forming a core on the or on each mandrel (3) in turn from a continuous web (5) of gummed material. The core forming apparatus (1) comprises means (6) for presenting the free end of the continuous web (5) to a winding mandrel (3), means for rotating the winding mandrel about its central axis to cause the web (5) to wrap around the winding mandrel (3), means (10) for applying water to the web (10) to activate the adhesive and thereby bond together the layers of paper wrapped on the winding mandrel (3) and means for cutting the continuous web from the core when the core has reached a predetermined diameter.

Abstract: The apparatus for forming a container is situated in a container-forming unit comprising different processing stations. The apparatus for forming a container includes a wrapping mandrel attached to a moving structure, which is arranged to move the wrapping mandrel between different processing stations, and the members for feeding the blank to the wrapping mandrel. The apparatus for forming the container also has members to wrap the blank around the wrapping mandrel in order to form a structure that is closed in the horizontal cross-section perpendicular to the longitudinal axis. The wrapping mandrel is equipped with suction openings distributed on its perimeter, which openings are connected to the air duct in order to wrap the blank around the wrapping mandrel with the aid of suction.

Abstract: Process and device for continuously winding a plurality of longitudinally cut paper webs at machine speed by using a device that includes support rollers and at least one pair of disks associated with each of the support rollers, such that the at least one pair of disks is arranged concentrically with and rotates independently of, its associated support roller. The at least one pair of disks includes a first winding device having a first cardboard tube disposed thereon and a second winding device having a second cardboard tube disposed thereon, such that each of the support rollers include at least one of the pair of disks, which are concentrically arranged with and which rotate independently of the support rollers.

Abstract: Winding cores for the paper industry are restored by removing the metal tips from the ends of the core, trimming the core to eliminate the crimped end portions of the core, providing complementary male and female joint ends to the core, grinding the outer surface of the core to a constant outer diameter less than the industry standard outer diameter to accommodate a finishing layer. The cores with the complementary joints are pressed end to end to form a core master prior to its being ground and then picking up the core masters one by one and bringing them into proximity of a web of liner board material having a length which corresponds to the length of the core master and a width which corresponds to the circumference of the core, contacting the glue bearing liner board web with the core and rotating the core to wrap the web of liner board about the core to provide a finished restored core. The core master is then cut into suitable length winding cores.

Abstract: Tubular wrappings, formed from a sheet with superimposed longitudinal lateral portions and made of partly metal and partly heat-sealable material, are sealed longitudinally by successively feeding the wrappings, by means of a conveyor, in a first given direction and along a given path through a sealing station; by varying the traveling speed of the wrappings in relation to the conveyor so as to successively impart to the wrappings a pause at the sealing station; and by induction heating, for an adjustable length of time during the relative pause, the metal part of the sheet of each wrapping along the relative superimposed longitudinal lateral portions, to melt the heat-sealable part of the sheet.

Abstract: An automatic wrapping apparatus for wrapping an external tape support about a filter element includes an indexable turret assembly having a plurality of filter element clamps rotatably mounted at spaced radial positions on the indexable turret. Means are provided at one of the radial positions for rotating a filter element clamp about a longitudinal axis. The wrapping apparatus also includes means for selectively varying the position of the strand of tape along the longitudinal axis during rotation of the clamp. Further, the apparatus includes means for severing the strand of tape and wrapping the severed ends about a respective pleated filter assembly.

Abstract: The invention relates to the covering with sheet material of flexible symmetrical angulate tubes, especially components of packages. By utilizing the resilient cross-sectional deformability of the tubes, there is provided a method and apparatus where the tube is mounted onto a cylindrical mandrel having a circumference corresponding essentially to the inner circumference of the tube and thereafter applying the sheet material around essentially the entire circumference of the tube.

Abstract: The making of a tubular sleeve of thermoplastic material wherein a strip of sheet stock is fed to a rotatable turret having a plurality of rotatable mandrels thereon, the strip is severed into individual rectangular blanks, each having a leading edge and a trailing edge, each blank is formed into a cylindrical shaped sleeve wrapped around a mandrel with the trailing edge overlapping the exterior of the leading edge of the blank, the mandrels are moved past a sealing station and a plurality of bars are rotated so they move successively in an arcuate path generally tangentially to the path of the blank to bring the sealing surface of each bar into engagement with the overlapped edges and apply radial pressure thereto to fuse the edges together and form a seam.

Abstract: An apparatus for fabricating a flexible cylinder from multi-ply flexible web material has a cylindrical forming cavity with a longitudinal opening through which the flexible web material is fed into the cavity. A non-metallic cylindrical mandrel, about which the flexible web material is fed, is mounted along the central axis of the cavity. The diameter of the mandrel is less than the diameter of the cavity in which it is disposed by an amount greater than the thickness of the web material. The web material is fed loosely around the mandrel by a feed roller to form a flexible cylinder having an internal diameter greater than the diameter of the mandrel and an outer diameter less than the internal diameter of the cavity. The amount of web material fed is enough to form a narrow longitudinal overlap zone which is heat sealed to form a longitudinal seal.A seam presser holds the overlap seam during sealing and subsequent cooling.

Abstract: The present invention relates to improved apparatus for forming a tubular plastic sleeve immediately prior to its application to a rigid base article, such as a glass or plastic bottle. A rectangular blank of plastic material is wrapped around a cylindrical mandrel and seamed lengthwise thereon to form the tubular sleeve. The mandrel has a plurality of spline-shaped grooves in its curved peripheral surface and a stripper ring mounted to closely surround such peripheral surface to be slidable thereon. The ring has a plurality of internal lugs which slidably fit within the spline-shaped grooves. The mandrel has a lineal array of vacuum ports for retaining the leading and trailing edges of the plastic blank on the mandrel for its wrapping thereon, and an axial resilient strip mounted in the curved peripheral surface of the mandrel for operation of a movable, axially-extending sealing bar thereagainst.

Abstract: A plastic sleeve is fabricated by: winding a blank of plastic film around a hollow cylindrical mandrel having a groove of arcuate cross section extending in the mandrel axial direction along the mandrel outer surface and having numerous through holes through its wall including the concave surface of the groove, the blank ends being overlapped; applying a vacuum through the holes to the inner surface of the blank thereby to draw it by suction tightly against the mandrel outer surface; heat sealing the overlapped ends of the blank thereby to form a sleeve; and vitiating the vacuum and applying pressure above atmospheric to the inner surface of the sleeve thereby to facilitate the succeeding step of stripping the sleeve from the mandrel and fitting it on a glass bottle.

Abstract: The disclosure relates to a machine for making a plastic covering on a rigid base article which in the illustrated form comprises a glass bottle and a conforming shrunken plastic covering thereon. The plastic is fed in oriented sheet form to the turret apparatus, cut into lengths and wrapped and seamed on successive mandrels as sleeves. Bottles are simultaneously processed to preheat condition and indexed over the sleeves, the latter telescopically assembled on the rigid base article, i.e., the bottle, and the combination carried to a heat tunnel. The plastic sleeve shrinks into snug surface fit on the adjacent surface portion of the rigid base article.The bottle is preheated in one of two embodiments by: (1) a preheat tunnel on the machine which raises the bottles from room temperature to about 220.degree. F., or (2) the preheat is carried over as latent heat in the glass bottle from the annealing lehr, a part of the bottle manufacturing process.