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Blow Moulding Process & Barrier Containers Part 4 Testing

Blow Moulding Process & Barrier Containers Part 4 Testing. SIS. NEN. BSI. ISO. DIN. ÖNORM. SN. AFNOR. UNI. CEN. Testing standards. Testing standards. Procedure Equipment/materials Calculation & records Operator Figures for absolute evaluation and/or comparison.

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Blow Moulding Process & Barrier Containers Part 4 Testing

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  1. Blow Moulding Process & Barrier Containers Part 4 Testing

  2. SIS NEN BSI ISO DIN ÖNORM SN AFNOR UNI CEN Testing standards

  3. Testing standards Procedure Equipment/materials Calculation & records Operator Figures for absolute evaluation and/or comparison

  4. Properties of thermoplastic resins THERMAL: TEMPERATURE RESISTANCE (HEAT AND COLD) PHYSICAL: MELT INDEX (MFI, I2) MELTING POINT DENSITY SOFTENING POINT MOLECULAR WEIGHT (MW, Mw, MN, Mz) THERMAL CONDUCTIVITY MOLECULAR WEIGHT DISTRIBUTION (MWD, U, D) SPECIFIC HEAT VISCOSITY (VS. SHEAR RATE) HEAT CAPACITY MELT TENSION COEFFICIENT OF LINEAR EXPANSION CRYSTALLINITY LEVEL ELECTRICAL: DIELECTRIC CONSTANT LOSS FACTOR MECHANICAL: TENSILE STRENGTH SPECIFIC RESISTANCE ELONGATION SURFACE RESISTANCE MODULUS CONDUCTIVITY TEAR RESISTANCE OTHERS: ENVIRONMENTAL STRESS CRACK RESISTANCE (ESCR) TEAR PROPAGATION FORCE PERMEABILITY (WVTR, 02, N2, CO2, ETC.) FLEX. - RESISTANCE RESISTANCE TO BIODEGRADATION/PHOTO TORSION UV STABILITY HARDNESS RADIATION RESISTANCE IMPACT RESISTANCE (DDI, IZOD, CHARPY) FIRE RESISTANCE PUNCTURE RESISTANCE COEFFICIENT OF FRICTION (C.O.F.) INDUCED BLOCK OPTICAL: CLARITY SHRINK GLOSS SOLUBILITY HAZE IR & UV ABSORPTION REFRACTIVE INDEX FATIGUE CREEP WEATHER RESISTANCE MOISTURE ABSORPTION CHEMICAL RESISTANCE SEAL STRENGTH

  5. On line testing After de-flashing all bottles are checked for minimum top load, presence of holes and for tight performance. Default bottles are discarded immediately.

  6. Bottle testing ISO Standards, EN Standards, ASTM Standards, National Standards Brand Owner Specifications, Customer Specifications TESTS Raw materials: MI, MWD, viscosity, density, color, ESCR Bottles: Top load, impact resistance, ESCR, barrier properties, optical and physical properties, chemical resistance Blowmoulders need a QC Lab to guarantee quality consistency

  7. Topload Crossheadmoving down Max. topload Force Buckling of bottle Elastic deformation(resin dependent) Displacement

  8. Environmental stress crack resistance measured on resin (plates)

  9. Environmental stress crack resistance measured on bottles • Internal pressure test: • bottle filled 1/3 of volume with Igepal 10% solution • bottle closed with cap and pressurized (e.g. 400 mbar) • equipment placed in hot room (40°C) • timer detects time of failure (pressure loss) P = 400 mbar

  10. Impact resistance by free falling Impact resistance according to ASTM D 2463 mostly measured by Bruceton staircase method especially important for dangerous goods packaging Falling height and testing °T varies, according to application

  11. Dangerous goods and Chemical resistance Test for containers for dangerous goods EN ISO 16101:2004 Test for determination of chemical resistance EN ISO 175:2000

  12. Panel test For performance evaluation of containers which is not possible to be evaluated according to standards, is used the “panel test” (Procedure is described in a standard). A number of “experts” is requested to evaluate separately the performance of an item (e.g. smell) and to report separately about their findings.

  13. Legal papers and not in the Blow Moulding business Not legal ones: Technical data sheet Legal ones: Sales specification/Contract CoA (M)SDS Compliance Letter for Food Contact (Pharma, Toys)

  14. Show SDS

  15. General requirements of food packaging materials • Basic food law: no adulteration of food • Composition: positive lists (e.g. monomers, additives) • Quantity limits • Residual limits • Purity requirements • Migration (EU): overall • specific • Extractables (FDA*) • * FDA = the US Food and Drug Administration

  16. Food contact regulations • Food laws (by country) • individual foodstuffs • general food additives • finished food contact articles • paper • glass • ceramics • wood • plastics • etc.

  17. Food contact regulations (1) • Status in Europe today is a mixture of: • EU-Directives and National RegulationsEU-Directives: • Framework Directive (1989) • Specific Directives (e.g. for Plastics) • EU-Directive 2002/72/EC (+ pending 1:st amendment) • overall and specific migration • monomers + certain additives • quantity limitations

  18. Food contact regulations (2) • Status in Europe today is a mixture of: • EU-Directives and National RegulationsNational Regulations: • Positive lists by country (e.g. additives, polymerization aids, process aids, initiators, catalyst residues) • Implementation of EU-Directives into the national food contact regulations (EU-Directive vs. EU-Regulation)

  19. Required toxicological (TOX) testing per substance • European Union (EU) clearance • A) migration: < 0.05 ppm (50 ppb) • 3 - 6 months • 50 000 USD • B) migration: 0.05 ppm - 5 ppm • about 1 year • 180 000 USD • C) migration: > 5 ppm (< 60 ppm) • up to 5 years • up to 1.5 MM USD

  20. Food contact testing films (50 - 200 µ) sheets (1 - 2 mm) • Overall and Specific migration testing • (using specified Exposure Time & Temperature) + Acetic acid (3%) + Ethanol (10 %) + oil (olive oil) • Extractables (FDA) + hexane respectivly xylene

  21. Converter/Food packer responsability • Resin supplier migration tests • It is the responsibility of resin converters and food packers to make • sure that finished articles meet the relevant migration limits • Resin suppliers have no control over customers’ process conditions • They cannot state migration compliance

  22. Quality Control Program/Barrier Containers • On line • 1. Leak test • Internal Lab • 2. Dimensional and weight control • 3. Neck opening flatness • Wall thickness control • Barrier homogeneity • 6. Evaluation of capacity • 7. Efficiency of sealing around the neck • 8. Impact resistance by falling • 9. Leak test • 10.Burst resistance (by hydraulic internal pressure) • External Labs • 10. Total migration • 11. Color

  23. Quality Control Program/Moolayer bottles On-line test - Leak test (holes, thin places) Lab tests - Top load (compression resistance) - Impact test (drop test) - ESCR (bottles & resin) - Weight and thickness distribution - Optics and esthetic - Ink adhesion

  24. ISO 9000 Certification • Voluntary certification, which has the purpose to guarantee a consistent • high level of quality within the time • The certification covers (or can cover): Manufacturing plants, Labs, • Offices and related working procedures and demands to keep records • and an up-date databank • Certification is issued on the basis of internal and external audits, after • evaluation of activity records and QC data consistency.

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