We also find a hair in the seal seam

(Print version under We introduce: “Optical coherence tomography, a new robust method for the industry”)

In the case of packaging, there is always the question of sealing seam quality. For the first time it has been possible to detect even a hair in a sealed seam with a robust measuring technique developed for industrial use. The system allows to check the seal seam in micrometer accuracy at high test speed.

In contrast to all conventional systems for sealing seams, our system provides clear information about the quality of the seal seam in the current production. We find also a hair as well as oil sprays, wrinkles, cold-weld seams and so on. Independent of the coating material, our system provides information, even when it comes to the porosity in the seal seam. Whether or not an opaque film protects the product or a transparent film, a container with a sealed surface in a clear box or with a transparent cover, a cup-lid or an aluminum can play no role. We optimise our equipment to your product and adapt it to your task so that you can provide your customers with the highest level of security.

Inspection characteristics for sealing seam inspection

The LCI (low coherence interferometry) and the OCT (optical coherence tomography) method are robust methods at the beginning of industrial integration. Measuring with light is no longer a challenge, it is a Technology that is ready for industrial use. The sealing of tubes, bags, containers or other packaging requires procedures which are fast enough to derive the requested criterions in the running production. In addition, the geometrical resolution requirements are high and the packaging materials are very different.

With our procedures, we test transparent and opaque sealing seams, regardless of the material and the number of films. Normally, we use the OCT method for testing. Additional procedures are used for complex test tasks (metallic or multi-folded packaging).

 Nr. Characteristic Description
1 Film defect Are there any holes, cracks or missing layer in a multilayer film ?
2 Particles Are particles in the film, in the product or in the sealed seam?
3 Wrinkles Are some wrinkles in the film?
4 Alignment Is the product in the right position ? how is the alignment of the product ?
5 Seal Are there any failure in the sealed seam?
6 Defect Does the package is defect ? are there any, crack or a pollution on or in the the shell or on the product surface, … ?
7 Sealing defect Are particles in the sealing seam or in the package. Is any glue missing?
8 Air inclusion Are there open cavities, air bubbles in the sealing, delamination of layers?
9 Missing shell Are all shells in the right geometry, on the right place  in the right orientation or do some failures exist?
10 Sealing seam failure Do there a break through exist, a hair in the sealed seam, channels, inclusions or other defects?
11 Sealing seam How ist he widh of the sealed seam? How ist he Sealing seam qualification?
12 Other Are there format or product failures?
13 Packaging film Do any barriere is missing (gasbarriere, functional layer)?
14 Geometry Is the geometry right?
15 Product Is a product in the package?

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