Extrusion coating
DATE：2019/5/27 8:26:41 / READ： / SOURCE：This station
Extrusion coating
The extrusion coating process requires that the nip portion of the coating compound machine be adjustable in both horizontal and vertical directions. Some machine builders prefer to move the laminating machine horizontally and vertically, while others prefer the extruder roller to move horizontally and vertically. The reason for the laminator or extruder to move in the vertical direction is to aggregate. The substrate and substrate are utilized in the nip for the residence time of the polymer exposed to the air. The residence time has a positive effect on the adhesion of the polymer to the substrate. The longer the air gap (the distance from the die to the nip of the press roll), the higher the polymer temperature and the better the adhesion to the substrate. . However, the increase of the air gap may have different effects on the two important properties of heat sealability and odor. Therefore, while ensuring the heat-tightness ratio, coating and odor are not affected, the length of the air gap is properly handled to ensure Good adhesion is necessary, and the reason why the composite roller needs to be moved horizontally is to position the die on the left or right side of the nip. This movement is highly desirable to ensure that it is directed from the die into the nip of the composite machine at an appropriate angle in order to minimize contact on the substrate or chill roll. The contact time on the substrate or on the chill roll will have a negative effect on the adhesion. Therefore, regardless of the position of the extruder die, the coating machine is used for vertical or horizontal movement, or the extruder die is used for vertical and horizontal movement. The coating-composite machine nip position is no different, except when Squeeze coating when running. In coextrusion, up to four or more extruders are placed on a single set of rollers. Therefore, it is much more difficult to move the combined weight of more than four extruders vertically and horizontally than just the movement of the coating machine.
In the extrusion coating process, coating the compound machine is the key location to determine success or failure. Here, the polymer and the substrate form a finished product containing various performance properties. Therefore, the most important parameters required to ensure a good bond between the polymer and the substrate.
The extrusion coating process requires that the nip portion of the coating compound machine be adjustable in both horizontal and vertical directions. Some machine builders prefer to move the laminating machine horizontally and vertically, while others prefer the extruder roller to move horizontally and vertically. The reason for the laminator or extruder to move in the vertical direction is to aggregate. The substrate and substrate are utilized in the nip for the residence time of the polymer exposed to the air. The residence time has a positive effect on the adhesion of the polymer to the substrate. The longer the air gap (the distance from the die to the nip of the press roll), the higher the polymer temperature and the better the adhesion to the substrate. . However, the increase of the air gap may have different effects on the two important properties of heat sealability and odor. Therefore, while ensuring the heat-tightness ratio, coating and odor are not affected, the length of the air gap is properly handled to ensure Good adhesion is necessary, and the reason why the composite roller needs to be moved horizontally is to position the die on the left or right side of the nip. This movement is highly desirable to ensure that it is directed from the die into the nip of the composite machine at an appropriate angle in order to minimize contact on the substrate or chill roll. The contact time on the substrate or on the chill roll will have a negative effect on the adhesion. Therefore, regardless of the position of the extruder die, the coating machine is used for vertical or horizontal movement, or the extruder die is used for vertical and horizontal movement. The coating-composite machine nip position is no different, except when Squeeze coating when running. In coextrusion, up to four or more extruders are placed on a single set of rollers. Therefore, it is much more difficult to move the combined weight of more than four extruders vertically and horizontally than just the movement of the coating machine.
In the extrusion coating process, coating the compound machine is the key location to determine success or failure. Here, the polymer and the substrate form a finished product containing various performance properties. Therefore, the most important parameters required to ensure a good bond between the polymer and the substrate.
Author：admin