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Bavure (toile) is a defect that appears as a fine toile located on a part of the piece where a joint normally appears. Invisible to the naked eye, it can be sometimes unacceptable on functional surfaces. The measure of bavures can be done using a loupe or a profiler.The origin of the defect is due to infiltration during injection, with two possible causes: too much play between elements of the mold or sufficient pressure in the mold to overcome the mobility of the elements. The bavure is often located near a flow stop or a threshold.Possible causes of the defect include:* Incorrect closure of the mold or a mobile element* Too much play between mold elements* High temperatures in the mold or the material* Too high pressure to maintain the mold closed* Too high injection speed near the bavure areaRemarks include:* When a bavure appears on the joint, trying to increase the closure force is possible. However, the toile should not exceed 0.3 mm in height according to the norm NF T 58-000.* In some cases, the bavure may appear due to deformation of the mold under the action of pressure (intermediate plate flexion, fretting, verru, etc.).* Trace due to the fusion of the skin and the solid cover near the threshold is a sign of incorrect mold closure.