Home Uncategorized What are the precautions for the use of machine stretch film? Production of PE plastic film

What are the precautions for the use of machine stretch film? Production of PE plastic film

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What should we pay attention to?

precautions for the use of tensile film for machine: there are ten problems that can easily occur when the tensile film is packing goods, which must be prevented

1. Uneven tension

uneven tension of tensile film is usually manifested in too tight inner layer and loose outer layer of tensile film. If this kind of film is used on the stretch film packaging machine, the operation of the packaging machine will be unstable, resulting in uneven packaging size, film pulling offset, excessive edge sealing deviation and other phenomena, resulting in the packaging products not meeting the quality requirements

2. The section is uneven

generally, the section of the tensile film is required to be smooth. If the concave convex exceeds 2mm, it will be judged as unqualified and will usually be rejected. The stretching film with uneven section will also cause the unstable operation of the stretching film packaging machine, the deviation of the stretching film and the excessive deviation of the edge sealing

3. Wavy surface

wavy surface means that the surface of the finished stretch film is uneven and wavy. This quality defect will also directly affect the operation performance of the stretch film on the stretch film packaging machine and the quality of the final packaging products, such as the deterioration of the tensile performance and sealing strength of packaging materials, or the deformation of printing patterns and formed packaging. If this quality defect is very obvious, Such a stretch film cannot be used on the stretch film packaging machine

4. The slitting deviation is too large

it is usually required to control the slitting deviation of tensile film within 2 ~ 3mm. Excessive slitting deviation will affect the overall effect of molding packaging, such as pattern position offset, incompleteness, molding packaging asymmetry, etc

5. Poor joint quality

joint quality is generally the requirements for joint quantity, joint quality and joint marking. The tensile film joint shall be flat, smooth and firm, and shall not be overlapped. The joint position is best in the middle of the pattern, and the adhesive tape shall not be too thick, otherwise the film will be stuck, broken and cause shutdown, which will affect the normal operation of the tensile film packaging machine. Moreover, there shall be obvious marks at the joints for inspection, operation and treatment
6. Core deformation

core deformation will cause the stretch film to be unable to be normally installed on the fixture of the stretch film packaging machine. The main reasons for the deformation of the stretched film core are the damage of the core in the storage and transportation link, the excessive tension of the film, the crushing of the core, the poor quality and low strength of the core. For the tensile film with deformed core, it is usually returned to the supplier for rewinding and core replacement

7. The direction of the stretching film is wrong

most stretching film packaging machines have certain requirements for the direction of the stretching film, such as bottom first out or top first out, which is mainly based on the structure of the packaging machine and the design of the decoration pattern of the packaging products. If the stretching film is in the wrong direction, it needs to be rewound

8. Insufficient length

generally, the tensile film is measured by length, such as 200m /roll. The specific value is mainly determined by the maximum outer diameter and load capacity of the tensile film used by the packaging machine

9. Product damage

product damage mostly occurs from the completion of slitting to delivery, mainly including tensile film damage (such as scratch, tear and hole), tensile film pollution, outer packaging damage (damage, watering and pollution), etc

10. The product label is incomplete

the stretch film should have a clear product label, which mainly includes: product name, specification, packaging quantity, order number, production date, quality and supplier information. This is mainly to meet the needs of delivery acceptance, storage and delivery, production and use, quality tracking and other aspects, and avoid wrong delivery and use
Ming’an packaging has been used before, which is good!

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