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AI Visual Inspection Equipment for IXPE Foam

IXPE foam AI visual inspection equipment: for irradiation-crosslinked closed-cell IXPE foam, inline inspection of pinholes, air bubbles, indentations, color difference, delamination, surface scratches and other defects, with OK/NG output and line linkage.

Materials Overview

Fine closed-cell surface; subtle defects require high resolution

Quick answers

The IXPE foam AI visual inspection equipment images irradiated cross-linked closed-cell IXPE foam; algorithms identify fine defects such as pinholes, bubbles, indentations, color difference, delamination and surface scratches, output OK/NG results and interlock with the production line.

IXPE (irradiation-crosslinked polyethylene foam) is a closed-cell foam with a fine, uniform surface, commonly used for cushioning and insulation in electronics, automotive, and new energy applications. Its difficulty lies in "fineness" — the surface is uniform and defects are often very small, requiring higher camera resolution and pixel scale to consistently identify pinholes, micro-bubbles, and micro-scratches.

IXPE-specific defects include pinholes (tiny through holes), bubbles (abnormal bulging of closed cells), indentations, color difference, delamination (in multi-layer lamination) and surface scratches. Pinholes and micro-bubbles are hidden risks in insulating / waterproofing scenarios.

Inspection uses AI to build a model of the normal fine surface and judges tiny anomalies as defects; changing thickness and color mainly means adjusting resolution and illumination, not replacing the complete machine.

Applicable Type

IXPE Single Layer

Fine closed cells, key points: pinholes and bubbles

IXPE Double-sided Tape

Adhesive-backed; the focus is on glue application and delamination

IXPE Composite

Multi-layer lamination, with the focus between layers

IXPE Cut Pieces

Already cut, inspected piece by piece with defect locating

IXPE Roll Stock

Continuous material feed, line-scan full-width inspection

Common defect

Defect TypesTypical ManifestationsInspection Focus Points
PinholesMicro Penetration HolesTransmitted Light Is Key
BubblesAbnormal closed-cell bulgingDistinguished from fine surface
indentationCrush CollapseLow-angle light forms a clear image
color difference Inconsistency Within BatchStable Color Reference
DelaminationInterlayer SeparationFocus on the Edges
Surface ScratchLinear DamageRequires High Resolution
Stain / Foreign MatterOil Stains, ParticlesDistinguish From Surface
Missing cornerIncomplete OutlineRequires Positioned Measurement

inspection Workflow

Complete chain from loading to judgment

Visual inspection judgement chainThe complete chain from image acquisition to OK/NG judgement and PLC interlocking.image acquisitiontrigger captureTarget Positioningtemplate matchingfeature recognitionAlgorithm JudgementResult JudgementOK / NGindustrial communicationPLC interlockingRelease OKRejection / NG AlarmEvery step's result retains the image and judgement item, for traceability and review
Inspection Judgement Chain — Acquisition → Positioning → Recognition → Judgment → Communication interlocking; the entire chain runs locally on the machine.
  • 01 IXPE loading / roll unwinding or cut-piece infeed
  • 02 Flattening and tension control
  • 03 High-resolution imaging
  • 04 Fine surface modeling
  • 05 Anomaly region segmentation
  • 06 Defect classification and grading
  • 07 Dimension / contour judgement (optional)
  • 08 Synthesized OK / NG
  • 09 Marking / rejection and image archiving

AI Inspection Principles

AI Visual Inspection Principles

IXPE inspection is difficult because the defects are "minute": the surface is fine and uniform, and pinholes, micro-bubbles and micro-scratches are all very small, so high-resolution imaging is needed for reliable identification. The algorithm builds a model of the normal fine surface and judges small anomalies as defects.

For illumination, backlight / transmitted light is used for pinholes; low-angle light for indentations and scratches; diffused light for color difference and stains. Stains on dark IXPE and indentations on light IXPE require separately adjusted lighting.

For judgement, we recommend setting pinholes and bubbles as high priority and grading them by size. Specific resolution and thresholds must be confirmed by measured testing of OK / NG samples.

Applicable Industry

Applicable equipment

Common Question

Why Are IXPE Pinholes Difficult to Inspect?
The surface is fine and the pinholes are small, so a high-resolution camera and sufficient pixel equivalent are needed for reliable identification, together with a transmitted-light method. The specific resolution is worked back from measurement on samples.
How Much Does Inspection Differ Between IXPE and EPE?
IXPE is finer with more uniform closed cells and smaller defects, requiring higher resolution; EPE has a pearl texture and more obvious defects. The model and illumination must be adjusted accordingly.
Can glue application issues on adhesive-backed IXPE be detected?
Uneven adhesive application and delamination visible on the surface can be detected; the internal state of the adhesive layer is not visible and requires other methods, which is outside this equipment's capability.
Can color difference be inspected?
Yes, use a stable light source and a color reference to analyze the color distribution and grade by severity, with thresholds confirmed by measured testing against the customer's acceptance criteria.
What is the inspection accuracy?
To be added. Accuracy is determined by the field of view and camera resolution: pixel equivalent = FOV ÷ pixel count. First define the minimum defect size, then work back to the imaging solution and validate it by measurement with samples.
What samples are needed to develop a solution?
Provide OK and NG samples in different thicknesses and colors (including samples with adhesive), the defect acceptance criteria, loading format and production line cycle time.
Can It Be Integrated Into an Existing Production Line?
Yes. The system exchanges data with the PLC over I/O, TCP, RS485, Modbus, S7, Profinet and others, and outputs OK/NG to trigger rejection; the specific protocol depends on the site.

Submit sample testing

Send OK and NG IXPE foam samples of different thicknesses and colors (including adhesive-backed samples), and we will run high-resolution measured tests and recommend a pinhole inspection approach.

JPG / PNG supported, multiple files allowed
Each file must not exceed 20 MB
    JPG / PNG supported, multiple files allowed
    Each file must not exceed 20 MB
      JPG / PNG supported, multiple files allowed
      Each file must not exceed 20 MB
        A solution engineer will contact you within 1 business day after submission

        Need to assess imaging conditions, defect criteria and cycle time item by item? Go to the Full Requirement Assessment →

        Send Us Your Material and We Will Show You the Measured Results

        Provide several OK and NG samples of the material, and a solution engineer will run actual imaging and judgement tests on the equipment to give a workable inspection configuration recommendation, rather than reading the datasheet alone.

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