What are the effects of thickness on vacuum bags?

1. Barrier properties: The thickness of the bag will affect its barrier properties. Thicker bags usually have good barrier properties, which can effectively block external moisture, oxygen, etc., thus keeping the packaged items dry and fresh. Thinner bags may have slightly inferior barrier performance.

2. Mechanical strength: The thickness of the bag also affects its mechanical strength. Thicker bags are usually more durable because they can withstand external pressure and friction well. Thinner bags may experience damage or tearing during use.

3. Heat sealing performance: The thickness of the vacuum bag also affects its heat sealing performance. Generally speaking, thicker materials require higher heat sealing temperatures and pressures to achieve good sealing effects. If the heat sealing parameters are not appropriate, it may lead to poor sealing or excessive heat sealing marks.

4. Overprint accuracy: A bag film with moderate thickness can achieve good printing overprint accuracy and composite quality.

5. Heat sealing quality: A composite bag film with uniform thickness can achieve uniform sealing quality and avoid local heat sealing defects.

In summary, thickness has a significant impact on the performance of vacuum bags. When choosing a vacuum bag, it is necessary to select the appropriate thickness according to actual needs to ensure its applicability and service life.