heatsealing

例句：

1. 1.This machine can heat-seal plastic bags to prevent leaks.
   这台机器能加热密封塑料袋以防止泄漏。
2. 2. The company uses a special tool for heat-sealing the labels on their products.
   该公司使用一种特殊工具来加热密封其产品上的标签。
3. 3.Heat-sealed packaging is more durable and resistant to damage than unsealed ones.
   经过热封的包装比未密封的包装更耐用且更能抵抗损坏。