摘要:
A method and a device are disclosed for making thin plastic films having two or more layers, which are subdivided and separated in the form of tubular bags for portioned reception of different products, wherein the plastic films are provided with welding seams running substantially transversely to the longitudinal direction with predetermined spacing between one another to form bag-like containers, and the containers are separated from one another by a cutting or separating process, the method being characterized by the steps: a) welding the films with predetermined spacing by means of an ultrasound welding process, maintaining a defined, film-dependent distance between a processing tool and a counter tool while welding; and b) separating the tubular bags welded in this way by means of a mechanical cutting process, with or without reduced ultrasound excitation at the point of the respective weld seams.
摘要:
The invention relates to an apparatus for cutting a packaging material (4) for a package, comprising an ultrasonic welding device (2) that includes a sonotrode (3) and an anvil (5) for sealing the packaging material (4), the sonotrode (3) being rotatable about a first axis of rotation (X) and the anvil (5) being rotatable about a second axis of rotation (Y). The apparatus further comprises a cutting device (6) which includes at least one knife (7) for cutting the packaging material (4) and which is arranged within the anvil (5). The invention is characterized in that the knife (7) has a blade (8) with a cutting edge (28) that includes at least two tips (33, 35) and at least two curved sections (22) interconnecting the two tips (33, 35).
摘要:
The invention relates to a separating tool of a joining device, in particular for tubular bag machines, comprising a blade carrier (1), which has a groove-like recess (2), in which a blade (3) is arranged, characterized in that at least part of a wall of the recess (2) is designed as a bending beam, which extends over the length of the blade (3) and is integrally connected to the blade carrier (1) and adjacent to the base region (4) of the recess (2), and that at least two clamping screws (7) are arranged on the blade carrier (1), which clamping screws preload the bending beam (5) in the direction of the blade (3) in order to clamp the blade and are supported in threaded recesses (6) of the blade carrier (1).
摘要:
A method for manufacturing absorbent articles includes folding each of the absorbent articles about a fold line generally bisecting the article such that front and back waist regions of the articles are positioned in facing relationship, and simultaneously bonding and one of trimming and weakening the front and back waist regions adjacent each opposing side edge of the article to form a pair of fin seams. A bonding and slitting device adapted to form fin seams in absorbent articles includes a first bonding member; and a second bonding member having a contact element configured to cooperate with the first bonding member to bond a front region of the article to the back region to define the fin seams, and a slitter configured to simultaneously act on material outboard of the bonds from both the front and back regions of the article.
摘要:
Garment having seam-less elastic band or synthetic band, and system and method for producing such garment. A method of producing a seam-less elastic band (105) comprises: providing an un-folded elongated elastic strip (101); folding at the elongated elastic strip (101) at a folding point (102) to create a first strip portion (102-103) overlapping on top of a second strip portion (103-104) of the elongated elastic strip (101), wherein the first strip portion (102-103) and the second strip portion (103-104) meet at a meeting point (104); performing an ultrasonic operation at the meeting point (104) on said first and second strip portion to create the seam-less elastic band (105) detached from a remainder of the elongated elastic band (101). The ultrasonic operations comprise one or more operations, ultrasonic cutting, ultrasonic welding, ultrasonic bonding, or other suitable ultrasonic operations.
摘要:
The invention relates to a horizontal transverse sealing unit, in particular for a horizontal tubular bag machine for sealing at least one tubular film around at least one object to be packaged, having a first and a second rotational axis (18a, 20a) which are parallel to each other and at least two sealing jaw pairs (26a, 28a and 30a, 32a) which are each formed by at least one sealing jaw (26a, 30a) rotating around the first rotation axis (18a) and at least one sealing jaw (28a, 32a) rotating around the second rotation axis (20a), such that, during a sealing process, the sealing jaws (26a, 28a) of a sealing jaw pair (26a, 28a) approach each other and material layers can be sealed between the sealing jaws (26a, 28a) under exertion of pressure. According to the invention, at least two independently drivable sealing drives of the horizontal transverse sealing unit are provided to drive at least two sealing jaw pairs (pair 26a, 28a and pair 30a, 32a) independently of each other.
摘要:
A method is provided for sealing locking components of a retractor, wherein the locking components cooperate with a spool shaft extending from, and rotatable with, a rotatable spool of the retractor to selectively lock rotation of the spool. The method includes mounting a base of an open-ended housing to the retractor with the spool shaft accessible via an opening in the base when so mounted, positioning a sealing member to extend about and engage a periphery of the opening and to also extend about and engage a periphery of the spool shaft, operatively arranging the locking components within the interior of the housing, and hermetically sealing a cover to the open end of the housing after the housing is mounted to the retractor. The sealing member engages the peripheries of the first opening and the spool shaft and blocks ingress of moisture and particles to the locking components.
摘要:
A method and apparatus for sealing films. In one embodiment the sealing device comprises a horn and an anvil. The film has a standard portion and an increased portion. Increased energy is applied to the film in the increased portion compared to the energy applied to the standard portion. Such a method allows for sealing of varying number of layers.
摘要:
A welding and cutting wheel for permanently bonding micro-denier fabrics is provided. The wheel assembly comprises a first rotatable wheel equipped with a plurality of spikes along its perimeter, the first rotatable wheel being positioned to rotate around a first axis, a second rotatable wheel equipped with a plurality of holes along its planar face, the second rotatable wheel being positioned to rotate around a second non parallel axis in relation to the first axis, and an energy source operably connected to at least one of the rotatable wheels, to activate an adhesive material used in the bonding process.
摘要:
A method and apparatus for sealing films. In one embodiment the sealing device comprises a horn and an anvil. The film has a standard portion and an increased portion. Increased energy is applied to the film in the increased portion compared to the energy applied to the standard portion. Such a method allows for sealing of varying number of layers.