摘要:
Jetting dispensers and methods of non-contact dispensing a hot melt adhesive onto a substrate. The method may include jetting a plurality of droplets of the hot melt adhesive from a nozzle outlet toward the substrate in a direction of travel. Each droplet has a droplet length approximately aligned with the direction of travel and a droplet width shorter than the droplet length. The jetting is controlled such that each of the droplets does not collapse into a spherical-shaped droplet during flight from the nozzle outlet to the substrate. The nozzle outlet may be heated to a first temperature, and the method may further include rapidly heating each droplet of the hot melt adhesive to a second temperature higher than the first temperature upon release from the nozzle outlet.
摘要:
A dispensing valve is provided for dispensing liquid from a cartridge. The valve includes a valve body that is adapted to receive at least a portion of the cartridge therein. A valve member is disposed in the valve body and is adapted for fluid communication with the cartridge. A valve seat element is disposed in the valve body and includes a liquid chamber that is in communication with the liquid outlet and is mounted for reciprocating movement between a closed position engaged with the valve member to prevent liquid from exiting the liquid outlet and an open position disengaged from the valve member to allow liquid to flow from the liquid chamber through the liquid outlet. The valve body may include a longitudinal axis and a receive bore extending along the longitudinal axis, with the liquid outlet being substantially co-axial with the receiving bore.
摘要:
A dispensing valve is provided for dispensing liquid from a cartridge. The valve includes a valve body that is adapted to receive at least a portion of the cartridge therein. A valve member is disposed in the valve body and is adapted for fluid communication with the cartridge. A valve seat element is disposed in the valve body and includes a liquid chamber that is in communication with the liquid outlet and is mounted for reciprocating movement between a closed position engaged with the valve member to prevent liquid from exiting the liquid outlet and an open position disengaged from the valve member to allow liquid to flow from the liquid chamber through the liquid outlet. The valve body may include a longitudinal axis and a receive bore extending along the longitudinal axis, with the liquid outlet being substantially co-axial with the receiving bore.
摘要:
Jetting dispensers and methods of non-contact dispensing a hot melt adhesive onto a substrate. The method may include jetting a plurality of droplets of the hot melt adhesive from a nozzle outlet toward the substrate in a direction of travel. Each droplet has a droplet length approximately aligned with the direction of travel and a droplet width shorter than the droplet length. The jetting is controlled such that each of the droplets does not collapse into a spherical-shaped droplet during flight from the nozzle outlet to the substrate. The nozzle outlet may be heated to a first temperature, and the method may further include rapidly heating each droplet of the hot melt adhesive to a second temperature higher than the first temperature upon release from the nozzle outlet.
摘要:
A system and method applies a plurality of stretched elastic strands onto a substrate such as along a predetermined non-linear path, to form a leg gather of a disposable absorbent personal hygiene product. The system includes an adhesive dispensing module for individually applying adhesive to the elastic strands. A heated strand guide located downstream of the dispensing module includes guide openings for the respective elastic strands. A drive mechanism coupled to the strand guide actuates movement of the strand guide in a direction transverse to the movement direction of the substrate, thereby causing the elastic strands to be applied to the substrate along the predetermined non-linear path.
摘要:
A system and method for applying adhesive to at least a first end of a rod-shaped member, such as a cotton swab stick includes a carrier, an adhesive applicator, and a rotator device. The carrier conveys the rod-shaped member or stick in a machine direction and also allows rotation of the rod-shaped member about its longitudinal axis. The adhesive applicator includes an application surface positioned to engage the first end of the rod-shaped member. The application surface includes at least one discharge passage for applying adhesive to the first end of the rod-shaped member. The rotator device rotates the rod relative to the application surface and about its longitudinal axis as the rod-shaped member is conveyed along the application surface.
摘要:
Various methods of forming bags include applying hot melt adhesive to material without contacting the material with the dispenser that applies the adhesive. The material may be provided in various forms, such as elongate sheet material dispensed from a roll, or elongate tube material that is flattened to define first and second oppositely disposed sidewalls, for example. The material may be provided in single plies, multiple plies, or as separate sheets that are cut, folded, or otherwise manipulated to form bags, with the adhesive joining selected portions of the bag. A nozzle for dispensing hot melt adhesive includes an air passage that is inclined in a direction toward a liquid outlet. The air passage communicates with an air outlet disposed in a common plane with the liquid outlet.
摘要:
A method of applying adhesive to major and minor flaps of a container in a siftproof adhesive pattern. A pair of adhesive dispensing guns are independently moved with respect to the flaps of the container as the container is conveyed past the guns. Electric actuators, such as linear modules or rotatable servo modules, are used to rapidly accelerate the guns in a direction perpendicular to the path of the container along a conveyor. In this manner, rapid packaging takes place and reliable siftproof patterns are achieved using minimal adhesive.
摘要:
This invention relates to a feed system for conveying loose pieces of a coarse particulate or pelletized hot melt material such as adhesives from a storage container to a melt tank. The system includes a transition hopper having insulation between the hopper and the melt tank to prevent premature melting of the loose adhesive pellets or pieces before they pass into a melt tank. An air supply for providing air pressure to the interior of the hopper can be attached to the hopper to prevent vapors from rising from the hot melt tank into the transition hopper and a vent opening for exhausting vapors from the hot melt tank can be located in the top of the melt tank.
摘要:
A labeling apparatus and method for applying individual labels onto individual objects moving along a conveyor includes a label delivery mechanism configured to hold a plurality of the labels and operable to deliver individual ones of the labels adjacent to the conveyor. A non-contact adhesive spray applicator including at least one nozzle having a plurality of individual adhesive discharge orifices may be positioned and arranged to discharge adhesive from the orifices onto either the labels or the objects such that the labels may be respectively adhered to the objects.