“A ton bag, also known as a flexible intermediate bulk container (FIBC), is a large packaging container used for loading bulk materials such as powders, granules, and blocks. It is typically made of sturdy polypropylene material. In certain cases, cotton strips, also known as sealing lines, are added to the seams or specific areas of the ton bag to enhance its moisture resistance, waterproofing, and dustproofing capabilities.

The purpose of adding cotton strips mainly includes the following aspects:
- Preventing dust and impurities from permeating: During the bagging process of powdery or granular materials, tiny particles or dust may be generated. By adding cotton strips to the seams of the ton bag, it effectively prevents these impurities from infiltrating the interior, maintaining the cleanliness and integrity of the loaded materials.
- Guarding against moisture and water ingress: Especially during storage or transportation, ton bags may be exposed to rainwater or humidity. Adding cotton strips can help prevent moisture from seeping into the interior to protect the quality of the loaded materials.
- Enhancing the sealing performance of the ton bag: Cotton strips serve as a filling and sealing material at the seams, making the stitched areas tighter and thus improving the ton bag’s sealing capabilities.
- Reinforcing structural stability: In cases where additional strength reinforcement is needed for the ton bag, cotton strips can be used as one of the materials for reinforcement.
It is important to note that not all ton bags require the addition of cotton strips. This decision is typically based on the specific characteristics of the materials, transportation conditions, and usage requirements. For packaging ton bags for specific materials or in special circumstances, different reinforcement and protective measures may be employed.”