Pharmacy, Quality Assurance.

1. QUALITY CONTROL TEST FOR SECONDARY PACKAGING
MATERIALS
Quality control test for cartons
Compressions
Carton opening force
Quality control test for paper and board

2. QUALITY CONTROL TESTS FOR CARTONS
COMPRESSION
Used to assess the strength of erected package there by estimating the degree of
protection that it confers on the contents.
This is useful for products with no inherent strength in one plane or another.
Compression test machines

3. CARTON OPENING FORCE
The carton should spring open in to its original shape without a need for unreasonable
force.
If the carton does not spring open buckles in on itself, it may cause problem in cartoning
machine.
Carton opening force tester

4. QUALITY CONTROL TEST FOR PAPER AND BOARD
Test conditions :
Temperature : 22 - 24 C relative humidity : 48 - 52 %
1. Moisture content
2. Folding endurance
3. Air permeability
4. Tensile strength
5. Tear strength
6. Stiffness
7. Bursting strength

5. MOISTURE CONTENT TEST
Conditioned specimen is weighed and heated to a constant weight to expel the
moisture. The difference of the two weights gives the moisture content of the
paper.
Moisture meter for carton and paper paper moisture meter

6. FOLDING ENDURANCE
Fold endurance measures the durability of paper when repeatedly folded under constant load;
determining how many times the paper can be folded until it breaks.
Fold the test piece back and forth until rupture occurs.
FOLDING ENDURANCE TEST MACHINE

7. AIR PERMEABILITY
Importance for using light-weight uncoated paper on machine having vacuum pickup system.

8. TENSILE STRENGTH
Maximum load that a material can support without fracture when being stretched, divided by the original cross
section area of the material
Tensile strength have dimensions of force per unit area.
These test provides measurement of attributes we can see and feel : strength, stiffness and resistance to stretching.
TENSILE STRENGTH FORMULA :
S = F/A
WHERE, S = breaking strength
F = Force that caused the failure
A = least cross sectional area of material

9. TEAR STRENGTH
● The mean force required to continue the tearing of an initial cut in a single
sheet of paper.
● Tearing test is a simple method developed in 1940s, usually known as
Elmendorf test, for evaluating a particular type of paper strength, the tear
strength.
● In this test method an impact load is applied to pull paper apart
perpendicular to its faces. According to Van Den Akkers tear strength
theory, it is dependent of two phenomena.
● The work associated with breaking of fibres and then pulling fibres out of
the fibre network. These two phenomenon of course dependent on the
degrees of fibre bonding, fibre strength and fibre length in the paper sheet.
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10. STIFFNESS
● Degree of resistance offered by paper when it is bent.
● This involves testing a board piece and folding it through 90
degree.
● It will then try to recover its position when bending force is
removed.
STIFFNESS TEST MACHINES

11. BURSTING STRENGTH
● The burst test is used as a general guide to the strength of
paper, solid board and corrugated board.
● Bursting strength is usually quoted in kPa.
● We determine bursting strength using digital hydraulic board
burst tester.
Burst index = burst strength/basis weight.
DIGITAL HYDRAULIC BURST TESTER