摘要:
An arrangement (1) for the treatment of a material (7, 8; 7′, 8′; 7″, 8″; 18) having at least two layers of material by an ultrasonic device (2) having an ultrasonic horn (3) arranged in conjunction with an abutment (5), in conjunction with which the material (7, 8; 7′, 8′; 7″, 8″; 18) is positioned in a gap (6) that is defined between the ultrasonic horn (3) and the abutment (5), and the ultrasonic horn (3) and/or the abutment (5) is/are so arranged as to be capable of displacement to permit adjustment of the size of the gap (6), for which purpose the arrangement (1) also includes a control unit (13) for the regulation of the size of the gap (6) dependent on the energy supplied to the material in the course of the treatment. The arrangement further includes a detection device (16) for the determination of at least one predetermined dimension (b1; d1; b3) of the material (7, 8; 7′, 8′; 7″, 8″; 18), in conjunction with which the control unit (13) is arranged for the regulation of the size of the gap (6) dependent on at least the dimension (b1; d1; b3).
摘要:
Machine and method for making air-filled packing cushions from a roll of prefabricated film material having a longitudinally extending inflation channel near one edge of the material and chambers which communicate with the channel through laterally extending passageways. The roll rests on a pair of spaced apart, horizontally extending rollers. The film material is fed from the roll to an inflation tube which extends into the inflation channel, air is introduced into the chambers through the inflation tube to inflate the cushions, and a longitudinally extending seal is formed across the passageways between the channel and the chambers after the cushions are inflated.
摘要:
Packaging methods and apparatus for bonding a lidding web to a tray web, characterized in that the lidding web is placed under tension in both the longitudinal and lateral directions before being bonded to a tray web. A tray web having recesses and channels that form a conduit when the tray web is overwrapped with a lidding web is provided. A lidding web has microperforations to control the transfer of gases.
摘要:
An apparatus for forming inflated containers from a film web having two juxtaposed film plies includes: a. a mechanism that conveys the film web along a path of travel; b. a first sealing device for producing one or more seals that bond the film plies together to form a container having at least one opening; c. an inflation assembly for inflating the container by directing a stream of gas into the opening thereof; and d. a second sealing device for sealing closed the opening of the inflated container.
摘要:
A method for the welding of plastic materials in the form of webs, films or the like by means of a heating wedge, welding being carried out without the use of a second pressure roller below the welded material webs. For this purpose, the heating wedge is placed onto the lower material web and is moved over the latter under pressure. The pressure is generated via a holding-down device which has a holding-down roller and which presses onto the upper material web and onto the heating wedge. A floating mounting for the heating wedge compensates for slight unevennesses on the lower material web.
摘要:
An expandable and contractible cellular panel 10 comprises a plurality of parallel, aligned, elongated tubular sections 12 secured together at the median region of their adjacent longitudinal margins to form the panel 10. The adjacent tubular sections 12 of the panel 10 are made of a pair of substantially identical separate strips of sheet material from those forming the other adjacent tubular sections 12. The various adjacent pairs of strips are laminated together along their confronting longitudinal margins. Each strip is made of at least two separate flexible substrate sheets 18,20 having completely different appearances, and are secured together by welding together their longitudinal margins. The corresponding substrate sheets 18,20 of all the strips have corresponding positions in the panel 10, so that all the substrate sheets having one appearance are on one side of the panel 10 and those having a different appearance are on the other side of the panel 10, and the welded portions 28,28′ are located in the laminated portion of the strips where they are hidden from view.
摘要:
An automated reclosable packaging manufacturing equipment for applying zipper tape to bag making film, especially as part of a form-fill-seal process, and a method of joining a zipper flange of a zipper assembly to bag making film without “seal-through” of the zipper flanges. The method comprises the steps of: (a) pressing a web of bag making film and first and second zipper flanges of a zipper assembly together along the length of the latter, with the first zipper flange sandwiched between and in contact with the web of bag making film and the second zipper flange; and (b) during step (a), causing heat to be conducted through the web of bag making film into the first zipper flange. The amount of heat conducted through the web of bag making film must be sufficient to seal the web of bag making film to the first zipper flange without sealing the first zipper flange to the second zipper flange.
摘要:
A method for the welding of plastic materials in the form of webs, films or the like by means of a heating wedge, welding being carried out without the use of a second pressure roller below the welded material webs. For this purpose, the heating wedge is placed onto the lower material web and is moved over the latter under pressure. The pressure is generated via a holding-down device which has a holding-down roller and which presses onto the upper material web and onto the heating wedge. A floating mounting for the heating wedge compensates for slight unevennesses on the lower material web.
摘要:
A method and apparatus for making pouches is disclosed. It includes continuously moving the film through an intake section and then through a shuttle section. The film passes a plurality of successive sealing stations in the shuttle section, and while the film moves continuously, the film is at times generally stationary with respect to the sealing stations and at times moving with respect to the sealing stations. A plurality of successive seals is applied with the plurality of sealing stations, while the film is generally stationary with respect to the sealing stations. The film is then moved through an output section.
摘要:
A method for applying a fluid filament to a strand useful for bonding elastic strands to an absorbent garment is described. The strand is oscillated as it moves along an isolated path past a fixed fluid filament dispenser. The strand captures substantially all of the fluid filament, and at least partially all sides of the strand are coated with the filament. The filament coated strand may then be bonded to one or more substrates in some embodiments.