Corrugated carton packaging During cargo handling, handling and storage, it is absolutely necessary that the structural strength of the carton is sufficient to protect the goods from being damaged in the process of circulation.
The shape of the carton and the strength of the cardboard will affect the structural strength of the carton. Generally, the higher the carton strength requirement, the relatively higher the relative cost of the cardboard. However, the carton manufacturer often neglects the cost burden of the cardboard strength destruction during the processing.
Corrugated board strength Each corrugated board manufacturer invests in expensive manufacturing equipment and a large amount of manpower in the manufacturing process. It is precisely controlling every link and wants to manufacture the same or higher quality corrugated board at a lower cost than the industry. .
Enhance the rigidity, compressive strength and impact strength of corrugated paperboard and the core paper type, type of corrugation, corrugation height, bonding strength and corrugation strength under the general requirement that vertical compression strength (ECT) is greater than burst strength (BS). All are closely related.
The process of printing and cutting to destroy the strength of damaged corrugated cardboard boxes during the process of printing and cutting, how to minimize the extent of damage to the cardboard or not to cause damage, will undoubtedly greatly improve the strength of the carton and reduce the cost.
In the process of printing and cutting, there are several parts where the cardboard is easy to damage. Feed roll
2. Print plate
3. Print and cut all parts of the pull collar
4. Die Cutting (Rotary die cutter) Die This article only discusses the impact of the cartoning process on the carton strength of the Flexo press.
Common Flexo printers take the paper 1. Kickboard type (kickboard push and upper feed roller clamp combination)
The speed of the kickboard and the speed of the feed roller cannot be maintained at the same speed, and the length of the paper cannot be extended. It is necessary to completely rely on the feed roller for clamping and transmission. The paperboard strength is destructive and has gradually been eliminated.
2. Leading edge paper (sweeping suction wheel and upper and lower paper feed rollers)
The speed of the transfer wheel and the speed of the feed roller can be maintained at the same speed, and the length of the feed paper can be extended to assist the feed roller to transfer the paper. The destructiveness of the cardboard strength can be controlled and reduced. Now mainstream equipment is widely used.
3. Leading edge paper (suction conveyor wheel extends directly to the printing unit)
No upper and lower feed rollers hold the paper directly to the printing unit. The strength of the paperboard is minimally damaged, and new types of equipment have not yet been commonly used.
In order to ensure the accuracy of the paper feeding speed through the printing press, the paper feeding wheel is still an indispensable device in the existing equipment. It has enough clamping force and reduces the damage to the paper board strength. Wheels should consider factors:
1. The actual radiuses B, C, and D of the outer diameter A feed roller are different in the feed extrusion depth, and the feed roller pressure point changes to change the working radius of each transfer point, resulting in a difference with the surface speed of the lower feed roller.
When the outer diameter is too small, the same drag force must be tighter. (To be continued)
The shape of the carton and the strength of the cardboard will affect the structural strength of the carton. Generally, the higher the carton strength requirement, the relatively higher the relative cost of the cardboard. However, the carton manufacturer often neglects the cost burden of the cardboard strength destruction during the processing.
Corrugated board strength Each corrugated board manufacturer invests in expensive manufacturing equipment and a large amount of manpower in the manufacturing process. It is precisely controlling every link and wants to manufacture the same or higher quality corrugated board at a lower cost than the industry. .
Enhance the rigidity, compressive strength and impact strength of corrugated paperboard and the core paper type, type of corrugation, corrugation height, bonding strength and corrugation strength under the general requirement that vertical compression strength (ECT) is greater than burst strength (BS). All are closely related.
The process of printing and cutting to destroy the strength of damaged corrugated cardboard boxes during the process of printing and cutting, how to minimize the extent of damage to the cardboard or not to cause damage, will undoubtedly greatly improve the strength of the carton and reduce the cost.
In the process of printing and cutting, there are several parts where the cardboard is easy to damage. Feed roll
2. Print plate
3. Print and cut all parts of the pull collar
4. Die Cutting (Rotary die cutter) Die This article only discusses the impact of the cartoning process on the carton strength of the Flexo press.
Common Flexo printers take the paper 1. Kickboard type (kickboard push and upper feed roller clamp combination)
The speed of the kickboard and the speed of the feed roller cannot be maintained at the same speed, and the length of the paper cannot be extended. It is necessary to completely rely on the feed roller for clamping and transmission. The paperboard strength is destructive and has gradually been eliminated.
2. Leading edge paper (sweeping suction wheel and upper and lower paper feed rollers)
The speed of the transfer wheel and the speed of the feed roller can be maintained at the same speed, and the length of the feed paper can be extended to assist the feed roller to transfer the paper. The destructiveness of the cardboard strength can be controlled and reduced. Now mainstream equipment is widely used.
3. Leading edge paper (suction conveyor wheel extends directly to the printing unit)
No upper and lower feed rollers hold the paper directly to the printing unit. The strength of the paperboard is minimally damaged, and new types of equipment have not yet been commonly used.
In order to ensure the accuracy of the paper feeding speed through the printing press, the paper feeding wheel is still an indispensable device in the existing equipment. It has enough clamping force and reduces the damage to the paper board strength. Wheels should consider factors:
1. The actual radiuses B, C, and D of the outer diameter A feed roller are different in the feed extrusion depth, and the feed roller pressure point changes to change the working radius of each transfer point, resulting in a difference with the surface speed of the lower feed roller.
When the outer diameter is too small, the same drag force must be tighter. (To be continued)
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