Quality Tests
Our Quality Management Department focuses on two set of activities, quality assurance and quality control. Quality assurance is process oriented and focuses on defect prevention, while quality control is product oriented and focuses on defect identification. Our quality assurance activities are determined before production work begins and these activities are performed during the course of product development while quality control activities are performed after the product is developed.
The goal of our quality assurance team is to improve development and test processes so that defects do not arise when the product is being developed and to ensure this we perform periodic performance audits of our operations.Our quality control team aims to identify (and correct) defects in the finished product by finding and eliminating sources of quality problems through tools and equipment so that customer's requirements are continually met. For this we perform a number quality tests:
TENSILE TEST:
Purpose:
To determine the tensile (elongation) properties of film, in machine direction and cross direction.
Unit of Measurements
- Newton (N)
- Newton per square millimetre (N/mm2)
Reference Standards
- ASTM D882-02 (326-C).
- Japanese Industry Standard JIS Z 1711.
TEAR TEST:
Purpose:
To determine the force required to propagate a tear through a specified distance and form a specified slit, in machine direction and cross direction.
Unit of Measurements
- Milli-Newtons(mN)
Reference Standards
- ISO 6383 Part 2 - Elmendorf Method (Appendix A1)
- ISO 291 - Plastics- Standard atmosphere for conditioning and testing.
- ISO 459 - Plastics- Film Sheeting-Determination of average thickness and yield of roll by gravimetric techniques (gravimetric thickness).
- ISO 4593 - Plastics-Film and sheeting-Determination of thickness by mechanical scanning.
JOG TEST:
Purpose:
To determine carrying properties of plastic carriers and simulate actual conditions of use for our products.
Unit of Measurements
- Number of cycles completed ,using a specific weight ,within a specified time frame.
Reference Standards
- According to customer`s stated tolerance.
ULTIMATE LIFT TEST:
Purpose:
To measure the maximum load in Kgs that a carrier can withstand.
Unit of Measurements
- Kilograms (Kgs)
Reference Standards
- According to customer`s requirements.
DART IMPACT TEST:
Purpose:
To determine the impact failure weight.
Unit of Measurements
- Grams(g)
Reference Standards
- BS 2782 Part 3 : Method 352D : 1979
- ASTM 1709-97 Impact Resistance by Free Falling Dart
TESTING FOR THICKNESS:
Purpose:
To measure thickness/gauge of film.
Unit of Measurements
- Microns (mμ)
Reference Standards
- BS 2782 Part 6 method 630 A. Determination of thickness by mechanical scanning of flexible sheet.
- ISO 4593 Determination of thickness by mechanical scanning.
CROCK TEST:
Purpose:
To determine the adhesion of the ink to the film substrate. This is an abrasive test and is undertaken on wet and dry sample.
Unit of Measurements
- Pass / Fail
Reference Standards
- BS 2782 Part 8 : Method 826A 1992 Part 3 Determination of adhesion of print on Plastics.
- BS 2782 Part 3 Method 370 : 1990 (ISO 9352 : 1989) Part 3 Mechanical Properties Method 370: Determination of resistance to wear by abrasive wheels.
- JIS Z 1711 JIS Section 8.5 (Polythene Films for Packaging) – Print Adhesion.
OPACITY TEST:
Purpose:
To determine the level of opacity in the film.
Unit of Measurements
- Percentage(%)
Reference Standards
- ASTM D1003-97 Standard Test Method for Luminou Transmittance of Transparent Plastics.
INSPECTION OF DIMENSIONS:
Purpose:
To determine length, open width and closed width of the bags including handles and gusset, if applicable.
Unit of Measurements
- mm
Reference Standards
- Internal
WEIGHT MEASUREMENT:
Purpose:
To determine weight of bag / cartons.
Unit of Measurements
- Grams(g) / Kilograms(kg)
Reference Standards
- According to customer`s stated requirements.
RESINS DENSITY TEST:
Purpose:
To determine the density of resins.
Unit of Measurements
- Grams/centimetre cube (g/cm3)
Reference Standards
- D 2839-69 Density by Melt Index Strand
MELT-FLOW-INDEX (MFI) TEST:
Purpose:
To determine the melt flow index/rate for resins.
Unit of Measurements
- Grams / 10 minutes (g/10min)
Reference Standards
- ASTM D1238-90B Standard Test for Flow Rates of Thermoplastics.
MOISTURE CONTENT TEST:
Purpose:
To determine the moisture content percentage of resins.
Unit of Measurements
- Percentage(%)
Reference Standards
- ASTM D6980-09 Standard Test Method for Determination of Moisture in Plastics by Loss of weight.
COLOUR TEST:
Purpose:
To determine the print colour matches of film or printed artwork on film.
Unit of Measurements
- Pass / Fail
Reference Standards
- Pantone Colour Formula Guide.
TAPE TEST:
Purpose:
To measure the adhesion of print on plastic film.
Unit of Measurements
- Pass / Fail
Reference Standards
- ASTM F2252-03 Standard Practice for Evaluating Ink to Flexible Packaging Materials Using Tape.