Mechanical wrapping film (PE wrapping film) requires the use of a wrapping machine, which can achieve packaging automation and is suitable for units with large quantities, frequent use, or high degree of automation. Machine film requires high tensile strength and high cost, and is divided into ordinary type (resistance type) and pre tension type.

Drag type refers to the use of the resistance generated by the gravity of the cargo itself, combined with the rotation of the machine chassis, to achieve tight wrapping of objects;

Pre pulled type is to use the machine's own stretching parts to pre pull the film to a certain proportion and then wrap the goods tightly through the rotation of the chassis.

The tensile force of pre stretched film is greater than that of resistive film, and the cost is also higher.

Conventional specification table for machine film:

The above roll weights refer to net weight

Machine film is often used in conjunction with the main packaging methods of machines

(1)Semi automatic winding packaging machine for packaging

This type of packaging machine is suitable for palletized goods packaging: during operation, the goods are directly fed into the turntable of the packaging machine, and the wrapping film is placed on one side of the machine, which can rise or fall when the turntable rotates. The goods are transported from bottom to top, and then returned from top to bottom to complete one operation cycle. The film is tightly wrapped around the goods in a stretched state. Cut the film and stick it tightly by hand.

(2)Rotating packaging machine packaging

Unlike the packaging machine mentioned above, it utilizes the packaged goods(Cylindrical items such as paper tubes)Rotate and spiral wrap the wrapping film around the packaged goods.

(3)compression packing

This is a packaging machine with a pressure position. It utilizes certain types of goods(Such as cotton, wool, knitwear, etc)The compressibility is achieved by first applying pressure to the goods to reduce their volume, then pushing them out and simultaneously stretching the film to wrap around the goods. The film is then manually attached to the goods for heat sealing and cutting. last. Goods enter and exit the machine in a compressed state. At this point, as the goods tend to expand, the thin film will always tighten.