A study was conducted to choose a new resin for the BP Castro( bottle-making process. Four resins were tested using the standard 10-week stack test: ExxonMobil HY A30 I (the control),

Chevron Marlex 9512H, Dow DMDA 6200, and BP Solvay HPS0-25-155. The study focused on five possible defects: bent neck, pushed up base, creased side wall, pushed in bumper, and creased label panel. The goal was to find a resin that performed as well as or better than the control resin. The test required bottles to be made and quality-checked for conformance to specification. The bottles were then put into an Environmental Stress Crack Resistance test and subsequently set up in a warehouse for a live load double stack test. Four pallets of each resin were loaded with ballast weight and left untouched. At the conclusion of IO weeks, the ballast weight was removed and the bottles were inspected for defects. None of the resins clearly outperformed the control resin on all elements of the evaluation. Due to the lack of supply of the control resin, a new resin had to be picked from this set; therefore, the comparison was narrowed down to a single defect type: bent neck. As a result, the Dow resin was chosen as the replacement. Future development in test methods can be drawn from this test set of data to produce a lab-based test that is done in a controlled environment at an accelerated pace.

Library of Congress Subject Headings

Gums and resins, Synthetic--Testing; Plastic bottles--Testing; Packing for shipment--Testing; Materials--Compression testing

Publication Date


Document Type


Student Type


Degree Name

Packaging Science(MS)

Department, Program, or Center

Packaging Science (CAST)


None provided


Physical copy available from RIT's Wallace Library at TP1180 .W46 2007


RIT – Main Campus

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