DSS-A.02.04 — Interlayer Creep / Exudation at Edge

Localized flow, squeeze-out, or exposure of the laminated interlayer at or near the laminate edge. Presents as soft or glossy interlayer material visible at the ply edges; may wet adjacent components or leave a faint transfer on adjacent framing or gaskets. Because the condition originates within the laminate stack (between plies), it is not a face-side glass surface defect. The laminate’s internal faces are “laminate-internal” and are not accessible for in-place restoration.

• Soft or tacky bead/film emerging at the edge; sometimes clear, sometimes slightly hazed from dust pickup.
• May print or smudge onto adjacent frame gaskets; can trap debris along the edge line.
• Often intermittent along the perimeter; more pronounced at corners or areas exposed to heat/sunload.
• No discrete “line” or chip-flank morphology on the glass face; effect is edge-localized and internal to the laminate. (Use surface numbering and location cues to confirm laminate-internal origin.)

• Location/access: Confirm the observation is at the laminate edge and originates between plies (laminate-internal). Record surface numbering and product type on Forms: If the cue is not on the exposed face and shows fixed parallax (where applicable), treat as out-of-scope for in-place restoration.
• Non-invasive reveal: Clean and dry the exposed face per VIS before evaluating; edge ooze will not be removed by a face-side reveal, though incidental transfer on the face may wipe away.
• MSRT (Manual Surface-Relief Test): On the face, one light, non-marring pass only. Expect SC-0 on the face (no relief) unless there is a separate residue on the face; classification remains location-driven. Prefer polymer stylus if a coating is present on the worked face or rely on visual cues.
• Viewing/lighting: Evaluate at 12 / 36 / 72 in using normal incidence + oblique sweep (~60°-120°) under raking light; document the edge zone and overall context.

• Default: CAT-5 by location/condition - the condition is between plies (laminate-internal) and not addressable on the exposed face in place. Document and refer per project protocol.
• Escalate/branch when:
• Face residue/transfer is present from the ooze (e.g., on the frame or a smear on the glass face): classify the face residue under the appropriate R.01 / R.05 DSS entry (residue/transfer) by CAT using face-side cues; the source condition (internal ooze) remains CAT-5.
• Edge damage or cracking is also observed: classify those features under M.03 / M.07 as applicable, separate from the laminate-internal ooze.

Not a glass face relief feature. On the exposed face, MSRT typically records SC-0 (no surface catch) unless a separate residue is present. Numeric depth in glass (μm) is not applicable; record qualitative SC class and treat classification as location-driven.

• vs. Edge sealant smear (R.01.02 / R.01.03): Sealant smears are on the face and removable/alterable by reveal; interlayer creep is within the stack and persists as an edge-internal phenomenon. Face-side smear, if present, should be separately classified under Residues.
• vs. A.02.01 Edge haze/whitening: Whitening is a diffuse optical change within the edge region of the interlayer; creep/exudation presents as material flow/exposure at the perimeter. Both are laminate-internal and generally CAT-5 by location.
• vs. A.02.06 Local delamination: Delamination shows ply/interlayer separation (air/void interface) rather than material ooze; look for edge “silvering”/void lines and parallax behaviors. Both are laminate-internal (CAT-5 by location).
• vs. Coating anomalies on the face (Co.01/Co.03): Coating rubs/patchiness are face-side appearance changes and are disallowed at acceptance on coated surfaces; interlayer creep is internal to the laminate.

• Photo set (VIS): 12 / 36 / 72 in, normal + oblique sweep with raking light; include at least one macro of the edge showing interlayer exposure/flow and one context frame showing overall perimeter continuity.
• MSRT result (face): Record SC class on the face (expect SC-0); one pass only, non-marring; if a coating is present on the worked face, prefer polymer stylus or rely on visual/location cues.
• Forms: Pane ID; product family + surface numbering (#1-#4; “laminate-internal” as needed); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.

• Attempting to “clean away” internal ooze on the face can smear a residue and create a new face-side film; classify any resulting film under R (Residues) separately from the internal condition.
• Do not abrade the face to “blend” an edge-internal cue; classification is appearance/location-only and acceptance pertains to the exposed face under VIS.

A.02.04 Interlayer Creep / Exudation at Edge (Laminated) - Interlayer material is visibly exposed/flowing at the laminate edge; origin is laminate-internal (non-exposed). Face MSRT = SC-0. Observation persists after non-invasive reveal; classified CAT-5 by location/condition (out of in-place scope). Any incidental face residue from transfer has been recorded separately under R-series (if present). Documented with 12/36/72-in photo set, raking light, and surface numbering per VIS.