Precautions when laminating pouches are sealed

Jul 14, 2025

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Today we will talk about: What should be paid attention to when laminating pouches are sealed?

 

1. Choose the right laminating pouches

Laminating pouches of different thicknesses, sizes, and materials are suitable for different scenarios.

Common thicknesses include 80mic, 100mic, 125mic, etc. Thicker ones are stiffer and have better protection, but they have higher requirements for the laminating machine.

The size should match the file size. For example, A4 files use A4 laminating pouches. Too large or too small will affect the effect.

Choose materials according to the purpose. Common ones include glossy, matte, adhesive-backed, anti-static, etc.

 

2. Alignment before laminating

Before laminating, place the document in the middle of the laminating pouches, leaving a certain gap on the four sides, so that the edge is firmly sealed to prevent air or moisture from entering.

If the document is placed sideways, it is easy to seal crooked

If it is too close to the edge, it is easy to deglue

 

3. Preheating the laminating machine is very important

When the laminating machine is just turned on, the temperature of the laminating machine has not risen yet. Direct use will cause the glue to not melt well and the laminating is not firm.

Preheating generally takes 2 to 5 minutes. Wait until the indicator light is on or the display is ready before starting the operation.

 

4. The laminating speed should be uniform

When feeding into the laminating machine, the action should be steady, do not push or pull, let the machine bring it in by itself, so that the laminating will come out flat.

Pushing and pulling hard may cause bubbles or curling

Unevenness can easily cause deformation of the laminating pouches

 

5. Avoid foreign objects

Make sure that there is no dust, paper scraps or other foreign objects on the surface of the document before laminating. Otherwise, it may:

Damage the machine roller

The laminating pouches cannot be sealed

Obvious bubbles or bulges appear

 

6. Do not cut or bend immediately after plastic sealing

The laminating pouches just out of the machine are hot and the glue has not completely cooled. Cutting or bending them immediately at this time will affect the sealing and even debonding.

 

Want to know more about the purchase suggestions and usage tips of laminating pouches? Welcome to contact us!

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