1440 Timberwolf Drive, PO Box 964, Holland, OH 43528-0964 USA | 1 (419) 867-5400 | Email Us

1440 Timberwolf Drive, PO Box 964, Holland, OH 43528-0964 USA
1 (419) 867-5400 | Email Us

Preform and Bottle Testing

PTI's certified lab can assist you in analyzing your production product,provide qualification data or assist in 3rd party verification.

Submitting samples for testing? Please download and complete this form. Follow shipping instructions on the form.

  • Acetaldehyde

  • 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

    • 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.

    • 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. The CarboQC uses an automated piercing method, which improves test repeatability as well as operator-to-operator test reproducibility relative to tests using a manual piercing method. It also corrects for the amount of air in the package and reports both the volumes of carbon dioxide with the impact of air factored out and the parts per million of air in the sample.

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

  • Coefficient of Friction Testing

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

  • Conditioning

  • 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

    • 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.

    • 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.

    • 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.

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

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

    • 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.

  • Drop Testing

  • 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.

  • Extraction Test

    • This procedure determines the amount of liquid that must be extracted from a hot-filled container before the container collapses.

  • Heat Set - Film (resin evaluation)

  • 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

  • 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.

  • Line Lube Compatibility

  • Moisture Analysis

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

  • Permeability Measurements

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

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

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

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

  • Pasteurization

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

  • 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

    • 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.

    • 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.

  • 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

      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

    • 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

    • 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.