Semi-rigid and Rigid Plastic Container Summary
Abrasion
Classification |
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Identification | An abrasion is a scratch through any of the layers of the package. |
Causes | The packages were manually scraped on the retort racks, other equipment or other packages. |
Crushed
Classification |
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Identification | This is the alteration of the package original dimensions by force. |
Causes | The packages were abused during on-line or post-process handling. |
Cut (Fracture)
Classification |
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Identification | This defect is a mechanical slash or slicing that penetrates the package, causing a loss of hermatic integrity. |
Causes |
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Delamination
Classification |
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Identification | Delamination is a separation of the package laminate materials. |
Causes |
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Flexcracks
Classification |
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Identification | Flex cracks are small breaks in one or more layers of the package. |
Causes | The packages were flexed and stressed during vacuum-sealing, processing and/or handling. |
Foreign Matter Inclusion
Classification |
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Identification | Unintended matter was imbedded in the plastic body. |
Causes |
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Gels
Classification |
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Identification | This is improperly processed plastic included in the plastic container material. |
Causes | The settings for injection/blow molding or thermoforming of plastic containers were not correct. |
Label Foldover
Classification |
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Identification | This is the label material folded over on itself. |
Causes | The settings for labeling machine for plastic containers were not correct. |
Leaker (Channel)
Classification |
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Identification | This is a path of non-bonding across the width of the seal that will generally leak. |
Causes |
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Malformed
Classification |
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Identification | This is the plastic container that does not conform to mold contours as designed, or material distribution that does not conform to specifications such as waves, thin spots or discontinuous layers. |
Causes | The settings for injection/blow molding or thermoforming of plastic containers were not correct. |
Puncture (Pinhole)
Classification |
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Identification | This defect is a mechanical piercing that penetrates the package, causing a loss of hermatic integrity. |
Causes |
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Seal Defects (Burnt)
Classification |
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Identification | An area of the seal was discolored due to over heating. |
Causes |
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Seal Defects (Contaminated)
Classification |
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Identification | Foreign material is trapped in the seal area, such as, but not limited to, water, grease, or food. A package with contamination will have a noticeable raised area in the seal where the sealing head has sealed over the contamination. |
Causes | The seal area was contaminated during the filling stage and/or during the sealing if vacuumed. |
Seal Defects (Incomplete)
Classification |
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Identification | This is a portion of the seal that has a lack of adhesion between lid and body. This defect appears as a very faint sealing head impression on the seal. |
Causes |
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Seal Defects (Uneven Impression)
Classification |
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Identification | This is a defect that may lead to an out-of-specification seal. |
Causes |
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Seal Defects (Seal-width Variation)
Classification |
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Identification | This is a seal that has less than specified seal width. |
Causes |
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Seal Defects (Wrinkle)
Classification |
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Identification | A wrinkle is a material fold in the seal area. |
Causes | The sealing surfaces were not flat and parallel or were not tensioned properly. |
Swell (Swollen Package)
Classification |
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Identification | The package bulges due to gas formation from bacterial contamination, or excess internal residual air. |
Causes |
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