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

visualization of the surface condition after peeling allows for 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 topographic and microstructural characterization for understanding the mechanisms of adhesion, failure, or cohesion between two layers of a material or assembly.

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

Principles and methods of analysis

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

• Scanning electron microscopy (SEM)

Provides high-resolution images for visualizing microstructures, delamination zones, cracks, and adhesion defects. Enables morphological and topographic surface analysis with magnifications 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 for global observation of the peeled surface and measurement of roughness parameters (Ra, Rq, Rz) . Provides information on the continuity or heterogeneity of the film, as well as on the presence of material transfer zones.

The 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 evaluate deformation under stress.

Industrial applications

Visualizing the surface condition after peeling is applicable to many industrial contexts:

• Multilayer packaging (films, trays, lids) : study of the cohesion between adhesive, polymeric or metallic layers.
• Composite materials and engineering plastics : observation of fiber-matrix interfaces or localized delaminations.
• Industrial encapsulations and adhesives : verification of the behavior of adhesives under real conditions of use.
• 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 to identify the cause of a defect , optimize the formulations of glues or adhesives , and ensure the durability and mechanical performance of assemblies.

Analytical interest and complementarity

This analysis can be integrated into a broader study protocol including:

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

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

YesWeLab Services

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

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 request or quote, contact our scientific team today.