Abstract: The synthetic resin at a projecting end portion (5) projected from a clamping device (9) is heated to melt, then the projecting end portion (5) is positioned in a press molding space, which comprises an opening between an aluminum foil layer (3c) of a laminated aluminum tube and a molding wall of the press molding space. The projecting end portion (5) is pressed and molded into a sealed portion in the press molding space. The tube produced with this method has a sealed portion (8) with a desired shape, the aluminum foil layer (3) at the sealed portion (8) being completely covered and encapsulated with the synthetic resin, and the density of the sealed portion (8) improves providing excellent sealing quality.

Abstract: An apparatus and method for forming a seal portion of a tubular body of synthetic resin is provided in which the seal portion has increased density and reduced foaming. The apparatus includes a pair of clamps that clamp an end portion of a tubular body of resin flat. A heater heats and fuses a projecting end portion projecting from the clamps. A bending member bends side projecting portions of the body formed during heating so that they are inwardly projecting. A press member presses the projecting end portion to form a seal portion.

Abstract: The invention disclosure relates to a process for manufacturing a collapsible tube with a wall containing more than 60% by volume of plastic material from a substantially cylindrical, or tubular, blank. The inside and outside layers of the tubular blank are of polymeric plastic material, and the tube has a skirt and a necked head. In the process a shaping operation is performed where an end portion of the tubular blank is necked by bringing closer together inner and outer tools, thus producing crumpled folding of the end of the tube. Prior to the shaping operation the blank is heated in order to bring the portion of the end portion to be shaped to a temperature at the time of the shaping operation which is at least equal to the melting point of the polymeric plastic material forming of the layers the inside and outside surfaces of the wall of the blank. The polymeric plastic material is thus in a viscous molten state at the time of the shaping operation.

Abstract: A tri-fold dilatation catheter balloon and a method for preparing the same. The disclosed balloon has a tri-fold configuration in which the longitudinal creases defined by three flaps of the balloon are softened to ensure symmetrical deflation of the balloon into its tri-fold form. The tri-fold configuration initially imparted to the balloon by drawing the balloon into an longitudinal interstitial channel defined by three substantially cylindrical pins arranged in a pyramid-type stack. While the balloon is secured within this channel, negative pressure is applied to an inflation lumen of the balloon to deflate the balloon. Negative pressure is maintained on the inflation lumen as the balloon is withdrawn from the interstitial channel, and continues to be maintained while the creases defined by the three tri-fold flaps are heated with a longitudinal heating element. This softens the balloon material in longitudinal creases, so that the same creases will tend form whenever the balloon is deflated.

Abstract: A thermoplastic tube, and method for forming such a tube, has a tube body portion formed from an inner layer of thermoplastic material, a barrier layer, and an outer layer of thermoplastic material. The outer layer does not extend completely about the periphery of the tube body and a strip of thermoplastic material having the same composition as the inner layer, fills each gap in the outer layer to form a smooth surface about the tube. The strip may be transparent or of a color different than the color of the outer layer. In a preferred tube, a first layer of adhesive material is provided between the inner layer and the barrier layer, and a second layer of adhesive material is provided between the barrier layer and the outer layer and strip.

Abstract: The invention is a process for forming a hollow tubular member with an integral attachment end fitting.

Abstract: A method of producing segmented hollow body devices and the resulting products. The segmentation is accomplished by providing areas of increased cross-section around the circumference of the preform followed by axial compression thereof. These steps are followed by removal of the axial force resulting in a product which is segmented in accordance with the areas of increased cross-section and has a reduced free height.

Abstract: A hydraulic or pneumatically actuated muscle has an elongated elastomeric tubular bladder covered by a tubular braid. The bladder has a fold or invagination along its length. The process for forming this bladder can employ a fixture in the form of a threaded rod. A tubular elastomer is wrapped into the v-shaped thread on the rod. Then the wrapped rod is subjected to heat to set a fold into the tubing. The invaginate bladder can be subjected to a second, mild heat treatment to reduce curling.

Abstract: A headed thermoplastic tube is formed solely from a thermoplastic extruded, stretched, cylinder by positioning the cylinder over a forming mandrel with an exposed portion. The inner surface of the exposed portion is heated above the glass transition temperature of the thermoplastic material to render the inner surface molten while the outer surface provides support for the exposed portion of the cylinder. The heated exposed portion is then shaped into a conical shape, such as by heating the outer surface, and pressure applied to the conical shaped exposed portion to form a headed thermoplastic tube. The headed tubes produced have a body portion, shoulder portion and neck portion, without any seams, all of which are formed from the starting thermoplastic extruded, stretched cylinder.

Abstract: The invention describes an apparatus for the integral injection molding of a synthetic plastic top on a paper tube with an overall injection molding unit with a nozzle, a driven extruder worm (4), plasticising cylinder and a synthetic plastics injection unit, the nozzle being connected to the plasticising cylinder and being enclosed at least partially and externally by two movable outer mold parts, the inner mold part consisting of a movable mandrel.

Abstract: Plastic molded articles having characteristic properties of both shape-memory and biodegradability and a process for preparing the same are disclosed. The molded products consist of homopolymers of lactide or glycolide or copolymers of lactide and glycolide. The molded articles of this invention are particularly useful for a variety of medical devices.

Abstract: In an installation for producing packaging containers such as tubes, from prefabricated tube bodies and end portions of thermoplastic material, which are connected to the tube bodies, a plurality of moulds which are moved on a circulatory path each include an upwardly directed female mould portion and a mandrel which is pivotable about a horizontal axis between a downwardly directed working position and a loading position. A tube body loading station, a material feed station having a nozzle, and a container unloading station are arranged at spacings from each other along the circulatory path, while the female mould portion and the mandrel of each mould are displaced relative to each other on a common working axis. In a plurality of working units including support frames which are moved on the circulatory path, each support frame supports at least the female mould portion and the mandrel of a mould and the actuating mechanism thereof.

Abstract: The invention concerns a process for the production of a container (46) or tube (45) fitted with a pump (1) for the distribution of a liquid or creamy product, said pump (1) bearing an annular fixing rim (2), the periphery of which is of plastics material at least at its surface wherein: (a) the pump (1) is disposed between tools which sealingly clamp the rim (2) and contain the pump (1) with clearances limiting the rise in temperature thereof in the moulding operation; (b) the body or the skirt (19) is disposed around a tool, the upper end thereof projecting beyond same; (c) the assembly of tools is disposed in such a way as to form an annular moulding space which is fed by way of a plurality of injection ducts and connects said annular rim (2) to the projecting end of said body or skirt (19); and (d) molten plastics material is injected into said annular moulding space by way of said ducts, the assembly is left to cool and the resulting tube (25) is removed from the mould.

Abstract: The tubular body is laid in a horizontal position on a tapered suction drum and pivoted thereby into a vertical axis which is in coaxial relationship with the axis of a mandrel with a punch. The tubular body is then pushed from the surface of the suction drum on to the mandrel by a thrust member. The mandrel and/or the die is mounted displaceably in a vertical direction, which permits particularly stable and precise guidance. A plurality of dies with mandrels and punches associated therewith is disposed on a rotary member. In the course of a revolution of the rotary member, the tubular body on the mandrel is connected to a squeeze moulding in the die.

Abstract: An apparatus is described for moulding a plastics component onto a length of flexible web material, particularly a paper tube coated with thermoplastic synthetic material, the apparatus comprising a complete injection unit (5), a nozzle (26), an injecting head portion (12), external mould portions (11,11') and a core (14) which can be moved relative to these.

Abstract: A process for making head pieces for containers with a membrane of laminate having a metallic barrier layer, is designed to make one-piece head pieces, of a thermoplastic material with a mouthpiece neck, a cone-like breast part next to it, a ring-shoulder next to the breast part, a ready-made round plate and a membrane of a laminate with a metallic barrier layer. From a tape of laminate with a metallic barrier layer, using a deep drawing operation, the round plate is produced in a form representative of the outline of the head piece to be produced, is stamped out and is then run down into a mold. At the same time as the lowering the membrane is stamped out of the center part and is kept in position. After this thermoplastic material is placed in the mold and then the membrane is lowered into its last position in the mold and at the same time as the lowering of the membrane pressing of the thermoplastic material in the mold takes place.

Abstract: A blank is formed out of plasticizable, heated plastic by means of an extruding-type material supply head. A somewhat lenticular profiling of the blank is obtained by appropriately controlling a closing member of the material supply head, which is built as a valve cone. When the closing member is closed off against the lower edge of a tube part of the material supply head, the blank is pinched off from the material supply. A flow of air emerging from a ring nozzle serves to ensure complete severance of the blank from the material supply head. After that has been accomplished, the blank enters an open shaping cavity of a die by free fall. By further movement of the die, which is located on a rotary table, the die removes itself from the permanently located material supply head, so that the blank lying in the cavity can be pressed into a molded article by a stamp. Cooling off too much in certain locations on the blank is prevented by the free fall of the blank into the shaping cavity.

Abstract: Method for making a collapsible dispensing tube in which plastic fabricating materials other than conventional materials can be selected which are more suitable, since the pressure in the process is increased while the temperature is decreased. This manufacturing method utilizes a locking taper resulting in a better bond between the headpiece, barrier member, and the inner wall of the collapsible tube and substantially eliminating blowby of plastic material into said collapsible tube. The barrier member extends to and is tightly engaged with the adjacent inner wall of the collapsible tube and substantially eliminates bypass of gases around the barrier member. The method of manufacture permits the selection of the most suitable thermoplastic material for the intended use from a group of materials.

Abstract: An apparatus for making head pieces for containers with a membrane of laminate having a metallic barrier layer, is designed to make one-piece head pieces, of a thermoplastic material with a mouthpiece neck, a cone-like breast part next to it, a ring-shoulder next to the breast part, a ready-made round plate and a membrane of a laminate with a metallic barrier layer. From a tape of laminate with a metallic barrier layer, using a deep drawing operation, the round plate is produced in a form representative of the outline of the head piece to be produced, is stamped out and is then run down into a mold. At the same time as the lowering the membrane is stamped out of the center part and is kept in position. After this thermoplastic material is placed in the mold and then the membrane is lowered into its last position in the mold and at the same time as the lowering of the membrane pressing of the thermoplastic material in the mold takes place.

Abstract: A picture frame and method of making the same from a rising tube of fluent extruded plastic. The rising tube collapses inwardly to form the frame body as a ring of interfolded wrinkly sinuous corrugations. A stepped annular ring on the face of the extruder die is shaped to form a flat back for the frame along with a rabbeted inner rim edge suitable to seat a picture, mat and a backing plate.

Abstract: Method of forming a container in a collapsed or folded configuration from a thermoplastic material. A preform is made from an extruded tube of thermoplastic material in a preform mold. The preform is then transferred to a deformation mold. The preform has a skin of relatively cool material on its exterior and interior surfaces; however, the interior of the walls between the skins is still in a deformable state. In the deformation mold, the preform is collapsed or folded and held in such condition until the interior material in the walls has become set. This leaves the container so formed with a memory in the folded state. When filled, the container may be elongated beyond the folded state dimensions, but will try to return to that state as the contents are dispensed as a result of the formed-in memory.

Abstract: A method of making a normally closed, tamper-resistant container having a body, a nozzle insert extending outwardly from an opening of the body, and an integrally-formed closure member molded upon the insert and covering substantially the entire exterior surface and the outer end of the outlet passage thereof. The closure member includes a manually-rupturable connecting section extending thereabout and dividing it into a removable cap portion and a fixed breast portion, which joins the insert to the body. A method for fabricating the container is provided.

Abstract: Method in which an expandable internal shoulder forming member assembly to be used for forming a headpiece onto a preformed thin-walled plastic or laminate tube or bag provides a internal shoulder forming member upon which the loose fitting preformed thin-walled tube can be loaded. After tube loading, the internal shoulder forming member is inserted into a female forming member. Toward the end of the internal shoulder forming member's insertion stroke, a internal neck forming member which is mounted for axially movement within the head end of the internal shoulder forming member contacts the female forming member and then partially retracts into the head end of the internal shoulder forming member as the internal shoulder forming member continues to advance to the end of its insertion stroke.

Abstract: A laminated settable tubular package is disclosed having integral end and body portions of the same material. The tubular package is formed with a process and apparatus which permits head and shoulder portions to be formed as a continuation of the tubular body through folding and shaping operations. The package is substantially impermeable and has particular use for containing toothpaste, essential perfumes, oils, solvents, flavorings, and other substances in which permeation of the atmosphere and/or volatization losses are problems.

Abstract: A tubular container having a collapsible body welded to a head member, and a method of producing the same.The collapsible body and the head member are made of laminated films having impermeable layers therein, the impermeable layers of the body and the head member abutting or overlapping each other to form an impermeable layer of the shoulder portion thereby minimizing penetration or permeation of oil components, perfumes, etc. contained in the contents of the container or infiltration of oxygen into the container.The method of producing the aforementioned container comprises the steps of continuously extruding thermoplastic resin with an impermeable layer, cutting the resin to form a disc, welding the open end of the sleeve to close it, and forming a head member by pressing.