Detailed visualization of the surface condition (plastic part) after peeling

visualization of the surface state after peeling allows the examination of the morphology and fine structure of a plastic material following an adhesion, delamination or peel test.
Performed by scanning electron microscopy (SEM) or high-resolution optical microscopy , this analysis provides topographical and microstructural characterization for understanding the mechanisms of adhesion, rupture or cohesion between two layers of a material or assembly.

This study is particularly useful for manufacturers of multilayer packaging, technical polymers and plastic components , in the context of quality control , product development or failure analysis .

Principle and methods of analysis

The analysis is based on direct observation of the exposed surface after a peel test , in order to characterize the texture, roughness, continuity of the layers and the nature of the interfaces .

• Scanning electron microscopy (SEM)

Provides high-resolution images to visualize microstructures, tear zones, cracks, and adhesion defects. Allows morphological and topographical of the surface at a magnification of several thousand times. Can be coupled with elemental analysis (EDS) to identify the chemical composition of the observed areas.

• Optical microscopy and profilometry

Allows global observation of the peeled surface and measurement of roughness parameters (Ra, Rq, Rz) . Gives indications on the continuity or heterogeneity of the film, as well as on the presence of material transfer zones.

Observations are often correlated with standardized mechanical tests, such as:

• Peel test (ASTM D903, ISO 8510) to quantify adhesion strength,
• Tensile test to characterize the strength of the material,
• or compression test to assess deformation under stress.

Industrial applications

Visualization of the surface condition after peeling applies to many industrial contexts:

• Multi-layer packaging (films, trays, lids) : study of cohesion between adhesive, polymeric or metallic layers.
• Composite materials and technical plastics : observation of fiber-matrix interfaces or localized detachments.
• Encapsulations and industrial adhesives : verification of the behavior of adhesives under real-life usage conditions.
• Paints, coatings and varnishes : analysis of adhesion quality and behavior after peeling.
• R&D polymer materials : optimization of formulations to improve compatibility and interfacial adhesion.

This approach is essential for identifying the cause of a defect , optimizing glue or adhesive formulations , and ensuring the durability and mechanical performance of assemblies.

Analytical interest and complementarity

This analysis can be integrated into a more global study protocol including:

• Microstructure analysis for cross-sectional observation of the material,
• Surface roughness measurement to quantify irregularities after peeling,
• Study of the cohesion of the layers to determine the tearing force,
• Surface chemical analysis (FTIR, XPS) to identify chemical interactions at the interface.

The combination of these analyses allows a complete characterization of the interfacial behavior , combining mechanical, chemical and morphological data.

YesWeLab Services

YesWeLab relies on a network of ISO 17025 and COFRAC accredited partner laboratories , specialized in microscopy, surface analysis and mechanical testing .
Our experts select the observation method and magnification adapted to the nature of the polymer, the type of peeling and the objective of the study (R&D, quality control, failure expertise).

Thanks to the YesWeLab digital platform , you can easily
order, track and centralize your analyses Since 2020, YesWeLab has been supporting packaging, materials and polymer manufacturers in the advanced characterization of their products and interfaces .

For any specific requests or quotes, contact our scientific team today.