Abstract: The apparatus has a strip support (12) which can be advanced in relation to gripping members (14) in order to pre-tension strip sections (6,8) against the clamping members. The clamping members feed, tension and weld the strip sections superimposed on the strip support (12). To improve feeding and tensioning and to avoid damage to the strip parts, the gripping members (14) are fixed to a link conveyor (48) which is guided over two guide wheels and from which at least one clamping member projects at the corresponding strip section (6).

Abstract: The invention relates to the butt-welding of pipes of plastics materials. Equipment is alreaady known where pipe ends are first urged against a trimmer plate, and then urged against a heater plate to create beads of a required size at the ends of the pipes, following which the pipe ends are urged into abutting relationship for welding to occur. Particularly with automatic machines employing hydraulic power, the force applied between the pipe ends and the heater plate and subsequently between the pipe ends needs to include an allowance for the drag factor inherent in the pipeline and compensate for any frictional effect in the mechanical and hydraulic moving components, and which is a difficult calculation.

Abstract: To prevent an end of a filled container, upon heating by a hot air for subsequent welding of edges thereof, from coming into contact and sticking to a retainer, a centering gas such as, for example, air is supplied from an external source to the container end. Edges of the filling opening of the container are heated by a hot gas for a subsequent closing of the same through a nozzle introducible into the filling opening of the container end. A centering fluid is directed at the end of the container with a component of flow of the centering in an axial direction of the container to provide for a contact-free centering of the container end.

Abstract: There is disclosed a hand-held labeler having a housing with a handle, a thermal print head for printing on labels of a composite label web, a platen roll cooperable with the print head, a delaminator for delaminating printed labels, an applicator for applying printed labels, and a brake for arresting the platen roll to prevent loss of print registration during application of a label. The operative components of the labeler are readily accessible for servicing, and yet the labeler is simple in construction. The labeler has an improved print head mounting structure for facilitating precise alignment and pressure contact between the print head and the platen roll.

Abstract: A dispenser for dispensing labels from a backing strip upon which the labels are mounted with a pressure-sensitive adhesive backing on the labels, the labels being adapted to be peeled away from the backing strip by sharply reversely bending the backing strip over an edge. The used backing strip is automatically collected and stored within the housing as the strip is unwound from the supply roll and the pressure-sensitive adhesive backing labels dispensed from the dispenser. The dispenser includes only one moving part namely a combined take up roll and hand wheel both of which are confined within the housing of the dispenser.

Abstract: An apparatus is provided for creating an improved configuration of overlapping lengths of flexible thermoplastic strap to accommodate the formation of an improved joint between the strap portions. The apparatus includes first and second strap engaging members respectively defining first and second contoured surfaces for engaging respectively first and second strap lengths to position the joint portions between the strap engaging members in an overlapping relationship along an interface region and to position the trailing portion of each strap length to extend in a plane generally parallel to a reference plane with at least a part of the length of the interface region being non-parallel to the reference plane. In the preferred embodiment, the strap engaging members are each provided with a convex surface and a concave surface and are disposed to align the concave surface of one member generally in registry with the convex surface of the other member.

Abstract: This invention relates to a labelling machine for bottles which includes a bottle feeding mechanism to feed the bottles to a revolving bottle support platform. The support platform directs bottles to a labelling mechanism and an application mechanism prior to their removal by a bottle withdrawing mechanism. The bottles are maintained against undesired rotation on the support platform by axial force on the top of each bottle to produce contact between the bottom of each bottle disposed on a support plate for each bottle turntable on the revolving bottle support platform. The support plate includes a base portion and upper surface element having an upper contour in a central region thereof. The upper contour matches the bottom of the bottle for receipt of the bottom therein. The upper surface element is removably mounted on the base portion of the support plate and includes features for centering the upper surface element and the upper contour thereof on the base portion of the support plate.

Abstract: An air guiding arrangement for welding materials having plastic films includes a device to supply a uniform hot-air stream at any given air velocity. The air guiding arrangement has a nozzle which contains a swirl chamber functioning as a diffuser which tapers in the shape of a funnel. The nozzle is preceded by an adjustable air divider through which the amount of air to be supplied to the welding site is varied. The hot-air welding machine serves for a seam-shaped connection of plastic containing materials providing uniform heat distribution in the welding gap.

Abstract: A new and improved splicing block assembly and a novel splicing tape dispenser applicator for a cassette-loading machine are disclosed.

Abstract: A friction welded part having a sealed flash trap is disclosed, along with a method for producing such parts. The friction welded parts have a hollow cylindrical part and a second part to which the hollow cylindrical part is friction welded. There is an internal flash trap in the region of the weld, and the hollow cylindrical part is pinched inwardly or a conical flange on the flash trap is deformed outwardly so as to seal the flash collecting portions of the flash trap from the hollow portion of the hollow cylindrical part remote from the weld. The method involves the conventional steps of rotating the parts with respect to each other under pressure, stopping the rotation, and exerting high pressure to form the weld. In accordance with the invention, the hollow cylindrical part in the region adjacent the flash trap is then forced inwardly or a flange on the flash trap is forced outwardly so as to effect the seal.

Abstract: This invention relates to a labelling machine for bottles which includes a bottle feeding mechanism to feed the bottles to a revolving bottle support platform. The support platform directs bottles to a labelling mechanism and an application mechanism prior to their removal by a bottle withdrawing mechanism. The bottles are maintained against undesired rotation on the support platform by axial force on the top of each bottle to produce frictional contact between the bottom of each bottle and an elastic support plate for each bottle turntable on the revolving bottle support platform. The support plate includes an elastic body and several block-shaped friction bodies imbedded therein and distributed over its surface. The friction bodies have exposed contact surfaces, which lie in the plane of the exposed surface 13 of the elastic material. Such a support plate includes a long service life and capable of providing a high degree of friction between the micro-cracked bottom of a bottle and the friction bodies.

Abstract: A sealing strip, particularly for making a telecommunications splice case comprises a sintered ultra high molecular weight polyethylene strip that can weld together parts of, for example, a wrap-around sleeve.

Abstract: Bonded seams for joining nonwoven, spunbonded polyolefin fabric to itself are prepared by overlapping of edge regions of the fabric with linen sides of the fabric in contact with one another and first applying heat and pressure along a seam line by means of ultrasonic energy and an embossed wheel, giving a lightly bonded strip. The strip is then folded against an adjacent surface, and heat and pressure are applied from the opposite side of the fabric and over the underlying folded-over strip. This procedure in effect merges the bond produced by the second application of heat and pressure with the first bond, giving a strong bond. Cleanroom and protective garments may be fabricated to include such seams, with the side of the seamed fabric that has a remaining cut edge at the seam being disposed on the inside of the garment. Such garments avoid release of microscopic particles such as occurs for stitched seams.

Abstract: The invention is an automatic skin taping machine for use in applying a protective coating to sheets of material, especially aluminum. The machine comprises a main frame, a transfer car movable within the main frame, an applicator that uniformly applies the coating to the sheet of material by moving over the surface of the sheet, a retainer that immobilizes the sheet of material while the applicator is applying the coating, and a vacuum lift system for transferring the sheet of material from an application position to a storage position. In a preferred embodiment, the application includes a floating roller and a squeegee device.

Abstract: Apparatus for stabilizing the trailing end of a web that is to be spliced to the leading end of a new web includes a knife for severing the old web and for creating a tail that must be stabilized, a suction box over which the trailing end passes, which provides stability to the trailing end, a pressure roll movable to move the cut trailing end of the old web against the leading end of the new web and a leaf-spring-like extension extending downstream of the suction box to the connection point or splice point between the webs. The extension is deflectable with the pressure roll and the extension carries the vacuum of the suction box further downstream and also supports the trailing end of the cut old web. The extension is cantilevered to the downstream side of the suction box.

Abstract: There is provided a molded connection piece and a method of making the same, in particular a boring saddle made of thermoplastic material and having a heating wire capable of conducting an electric current for producing a welded joint between the molded connection piece and an object to be joined with the molded connection piece. The heating wire is embedded in both surfaces of a disk-shaped core, in each case following the course of a spiral-shaped groove, and the core having the heating wire is joined with the molded connection piece. The disk-shaped core is formed of a material which, on melting, combines itself with the material of the molded connection piece.

Abstract: Two thermoplastic tubes are welded together by pre-cutting the tubes to create two ends which are axially aligned when placed in a holding device. A wafer is inserted in the space between the cut ends and the wafer is heated to melt the cut ends while the cut ends are in a non-flattened condition. After the wafer is removed the melted cut ends are pressed against each other to weld the cut ends together.

Abstract: Labelling machine comprising a cylindrical vacuum drum, a feed screw located in relation to the vacuum drum to move cylindrical containers from a starting point to a release point past the vacuum drum with their cylinder axes parallel to the cylinder axis of the vacuum drum and in tangent contact with the vacuum drum, and a continuous drive belt located to contact the sides of containers opposite their sides in contact with the feed screw, said belt serving to spin the containers from the starting point to the release point.

Abstract: This invention relates to a process of preparing a novel form of laminated-veneer-lumber. More particularly, this invention pertains to a process of producing a laminated-veneer-lumber which is composed of compactly arranged veneer sheets which have sinusoidal edges. A method of joining sheets of veneer in a layup, useful for continuous production of laminated veneer-lumber, comprising dispensing the stress concentration of the joints over an extended area of the joint by using veneer sheets that have opposite edges cut in a sinusoidal pattern.

Abstract: An apparatus as disclosed by which production of pompons of the inventions comprising a gripping member having a thermoplastic crown piece mating surface to which a plurality of thermoplastic streamers are ultrasonically fused may be utimated which comprises a means for moving a form cluster of streamers into a position intermediate of an ultrasonic welding horn and the crown piece mating surface of a handle or gripping member and a means for contacting and engerizing an ultrasonic welding head with the cluster of streamers so as to fuse the streamers to the crown piece by ultrasonic vibrations.