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Metal Can Defect

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Metal Can Defect
7

7

Index

Metal Can Defects
Identification and Classification

New

TABLE OF CONTENTS - HANDLING DEFECTS
DEFECT

SECTION

ABRASION

7.7.1

CHALKY SIDE SEAM

7.7.2

CORROSION

7.7.3

CRUSHED

7.7.4

CUT SEAM

7.7.5

DAMAGE TO SCORELINE/PULL TAB

7.7.6

DAMAGED COATING

7.7.7

DAMAGED CURL/FLANGE

7.7.8

DENT

7.7.9

DOUBLE SEAM DENT

7.7.10

FOREIGN CONTAMINATION

7.7.11

PUNCTURED

7.7.12

SCORED

7.7.13

30/04/89

7

7

1

Metal Can Defects
Identification and Classification

DEFECT:

New

30/04/89

ABRASION

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CLASSIFICATION:
Abrasion is considered a serious container defect when the metal has been reduced to less than 50% of its normal thickness.
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DESCRIPTION:
A mechanical wearing of the metal plate. Abrasion results in the weakening of the metal plate making the abraded area susceptible to either fracture or corrosion which could eventually perforate the metal plate.
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COMMON SOURCES:
1.
2.

The action of moving cable or metal conveyors on stationary cans. This may occur with either empty or filled cans.
Cans being moved against stationary objects with sharp parts. For example loading cans into damaged or rusted retort baskets.

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7

7

2

Metal Can Defects
Identification and Classification

DEFECT:

New

30/04/89

CHALKY SIDE SEAM

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CLASSIFICATION:
Chalky side seam is considered a minor side seam defect.
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DESCRIPTION:
Chalky white deposits or corrosion on

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