• Acetaldehyde

    AA Container Head Space

    This procedure measures the amount of acetaldehyde in PET bottles 24 hours after blow molding.

    AA Content, Preform Resin

    This procedure measures the amount of acetaldehyde in PET resin or a PET preform.

  • Burst Pressure

    Burst Pressure

    This procedure evaluates the performance of a bottle when the container is pressurized to very high levels. Failure location reveals weak areas of the bottle.

  • Carbon Dioxide Retention Testing

    FTIR Method

    This procedure utilizes Fourier transform infrared spectroscopy to measure the CO2 concentration within carbonated beverage containers.

    CarboQC Method

    This procedure determines the CO2 shelf life of a given carbonated beverage container by evaluating the CO2 level within sample bottles over time using a CarboQC test instrument.

    PTI “Zahm & Nagel”

    This procedure determines the CO2 shelf life of a given carbonated beverage container by evaluating the CO2 level within sample bottles over time using a Zahm & Nagel test device.

  • Coefficient of Friction Testing

    Preform Coefficient of Friction Testing

    This procedure determines the coefficient of friction between two PET film samples using an adapted version of ASTM D1894-90.

  • Density

    Preform Density

    This procedure determines a sample density and correlates that density to crystallinity using theoretical PET amorphous and crystalline densities according to ASTM D1505.

  • Dimensions

    Shrinkage Blown Containers

    This procedure determines the amount of shrinkage in a blown container in the first 24 hours after blow molding by evaluating the bottle height and diameters and overfill volume at 0.5, 5 and 24 hours.

    Wall Thickness

    This procedure determines the wall thickness at given locations on samples using a magnetic thickness gauge.

    Section Weights

    This procedure determines the weight of specified container sections by physically cutting the container at defined locations.

    Finish Dimensions

    The Finish Dimensions test is designed to ensure that all thread finishes on bottles or preforms comply with the dimensions and allowable tolerances specified on the respective bottle finish design drawings. In addition, there shall be no continuous or excessive flash, and no overhang between the F and G dimensions.

    Capacity Shrinkage

    This procedure determines the amount of shrinkage in a blown container in the first 24 hours after blow molding by evaluating the bottle height and diameters and overfill volume at 0.5, 5 and 24 hours.

    Bottle Dimensions

    This procedure is designed to measure the dimensions of a bottle to insure the containers meet the requirements and tolerances specified on the bottle drawings.

  • DSC Thermal Analysis

    DSC Thermal Analysis

    This procedure measures the quantity of energy absorbed or released as the temperature of a plastic sample increases from 50°C to 300°C, is quench cooled and then reheated from 50°C to 300°C.

  • Hot Fill (Container)

    Hot Fill (Container)

    This procedure evaluates the performance of a heat set bottle when filled with heated water. The methodology used simulates filling and capping as found in production.

  • Impact

    Dart Impact – Bruceton Staircase Method

    This procedure determines the weight, height and energy where a sample fails when it is impacted with a free-falling weight using the Bruceton Staircase Method.

    Preform Dart Impact – ASTM D3029-F

    This procedure determines the weight, height and energy at which a sample fails when it is impacted with a free-falling weight according to ASTM D3029-F.

  • Solution Intrinsic Viscosity

    Solution Intrinsic Viscosity

    This procedure is used to determine the intrinsic viscosity (IV) of the material. IV is a measure of the Molecular Weight (MW) of PET. The properties of PET are better at higher MW (higher IV) and worse at lower MW (lower IV). Comparing the SIV results from resin and molded parts can provide an understanding of the drying and process conditions.

  • Moisture Analysis

    Moisture Analysis

    This procedure measures the amount of moisture within a sample using the coulometeric Karl Fischer technique.

  • Permeability Measurements

    Oxygen – Container

    This procedure measures the permeation rate of oxygen through a container or film using a MOCON OX-Tran or Oxysense. The device will be selected based on the scope of the testing and the requirements of the container.

    Carbon Dioxide – Container

    This procedure measures the permeation rate of CO2 through a bottle using a Control C IV Permatran test instrument.

  • Pasteurization

    Pasteurization

    This procedure tests the performance of bottles as they are pasteurized.

  • Sidewall Tensiles

    Sidewall Tensiles

    This procedure is used to measure properties like the elastic modulus, the stress and the strain properties of a material using either injection molded tensile bar specimens or thin sidewall specimens cut from container.

  • Stress Crack

    Preform ISBT

    This procedure evaluates the performance of bottle bases when they are exposed to a 0.2% solution of NaOH (Sodium Hydroxide) to simulate the failure associated with Stress Cracking.

    Standard PET Industry 28 Day Test Method

    This procedure evaluates the performance of PET bottles when they are dipped in a stress agent and then subjected to high temperature and high humidity conditions.

  • Thermal Stability

    Thermal Stability

    The Thermal Stability Test is designed to insure that dimensional changes in carbonated PET bottles will not be excessive during their expected lifetime. This is also known as a “creep” test.

  • Tilt Test

    Preform Tilt Test

    This procedure determines the angle at which a bottle will tip and fall once the center of gravity has been overcome on tilting.

  • Top Load

    Top Load

    To insure that the vertical strength of PET bottles is sufficient to meet minimum performance standards for vertical loading as might be encountered during bottle filling, capping and stacking of filled product.

  • Volumes

    Capacity

    This procedure is used to determine the overfill (brimful) and fill line volume of each container in a set. This test can be used for either statistical information like average and standard deviation numbers or can be used to obtain mold specific information. Our typical test is either 12 samples chosen at random from a full mold round or it could be one container from each blow mold cavity.