By Stretch Wrapper | 01 March 2026 | 0 Comments
What to do when PET strapping tension is NOT good?
PET strapping is a widely used industrial product bundling and packaging material, offering high packaging efficiency and safety. It's the most suitable strapping solution for palletized loads. But every step in the production of PET strapping directly affects its quality, leading to common problems for users. Why do PET strapping sometimes become loose or not securely tied? What can we do?
The quality and specifications of PET strapping tools and materials on the market vary greatly. If the selected strapping specifications exceed its load-bearing capacity, the bundling will become loose or come undone.
The quality of the strapping material greatly affects the security of the bundle. If the strapping material quality is poor, even with the same specifications, problems such as low tension, poor toughness, high elongation, and brittleness may occur, resulting in loose or unsecured strapping.
Regardless of whether you choose a manual, pneumatic, or electric strapping machine, its internal tightening rollers and stop sliders will wear down during use. Wear on the tightening rollers and stop sliders can cause the strapping to tighten too much during the tightening process. This can lead to loosening or slippage, which is one of the main reasons why the strap belt cannot be securely fastened. If this occurs, it is recommended to replace the strapping machine parts as soon as possible.
1. Choose the appropriate strapping tools and materials according to your required tension and loadability.
2. Make sure the PET strapping belt you are using is in good quality.
3. Choose pneumatic or electric strapping machines instead of manual strapping tools if the weight of goods are too heavy.
4. If you are using a pallet strapping machine, please make sure the strapping machine is working properly.
Top 4 reasons for this common problem
Inappropriate strapping specifications
The quality and specifications of PET strapping tools and materials on the market vary greatly. If the selected strapping specifications exceed its load-bearing capacity, the bundling will become loose or come undone.
Poor-quality PET strapping material
The quality of the strapping material greatly affects the security of the bundle. If the strapping material quality is poor, even with the same specifications, problems such as low tension, poor toughness, high elongation, and brittleness may occur, resulting in loose or unsecured strapping.
Chose the wrong strapping machine
Common manual strapping machines on the market typically have a tightening force of approximately 150 kg. For bulky or heavy goods, the tightening force of a manual strapping machine can limit the ultimate tensile strength of the strapping, thus affecting its anti-loosening effect. It is recommended to use a pneumatic or electric strapping machine for goods weighing over 1 ton.
Strapping machine with malfunctions
Regardless of whether you choose a manual, pneumatic, or electric strapping machine, its internal tightening rollers and stop sliders will wear down during use. Wear on the tightening rollers and stop sliders can cause the strapping to tighten too much during the tightening process. This can lead to loosening or slippage, which is one of the main reasons why the strap belt cannot be securely fastened. If this occurs, it is recommended to replace the strapping machine parts as soon as possible.
What to do when PET strapping tension is NOT good?
1. Choose the appropriate strapping tools and materials according to your required tension and loadability.2. Make sure the PET strapping belt you are using is in good quality.
3. Choose pneumatic or electric strapping machines instead of manual strapping tools if the weight of goods are too heavy.
4. If you are using a pallet strapping machine, please make sure the strapping machine is working properly.
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