Document mmwRkVYk2G7Qm0JpoxyM1myoZ

d THE SOCIETY OF THE PLASTICS INDUSTRY. INC, 250 PARK AVENUE NEW YORK. NEW YORK 10017 212687.2675 March 7, 1972 TO: MEMBERS OF THE TECHNICAL COMMITTEE OF THE PLASTIC BOTTLE DIVISION Dear Manber: At the last meeting of the Technical Committee, approval vas given to circulate the "Rcconmended practice for Measuring Toughness of PVC Bottles by Drop Impact" for full Ccamittee ballot. The pro cedure in final draft form is attached with a ballot. As is our customary practice, the procedure vith ballot will be sent to the official representative of member companies who do not have a representative on the Technical Committee for their review and vote. Please note that ballots must be returned by March 31. 1972. A negative ballot must be accompanied by mi explanation to be considered valid. Assuming the procedure has been approved, it will be submitted to the Executive Committee for their approval before printing. You are requested to return your ballot as soon as possible. Cordially, Thomas J. McGrath Staff Administrator Plastic Bottle Division TJM/mm att. SPI-25586 f REVISED "INAL PRATT RECCMCNEED PRACTICE FOR MEASURING TOUGHNESS OF PVC BOTTLES BY DROP IMPACT 1. SCOPE This recoimended practice is designed to provide a procedure for treasuring drop inpact resistance of polyvinyl chloride bottles which are intended for use as containers. The procedure is not desimed to evaluate the suitability of any particular bottle shape, P/C compound, or set of molding ocrditicns and it is not intended to be a specification for PVC bottles. This procedure may be used, hcuever, for setting requirements for performance of P/C bottles as agreed upcn between buyer and Beiler, 2. 5UIMAKY OF PROCEDURE The procedure consists of dropping sealed PVC chloride bottles, which have been filled with water, cnto a steel surface fron a prescribed heisht in cne position (flat bottom drop). Each bottle is dropped cnce. 3. APPARATUS A drop testing machine such as specified in ASTM D-2463-65R, SPI Technical Bulletin PBEW4-1968 or equivalent shall be used. 4. TEST SAMPLES A, Test bottles shall be selected by a suitable procedure to assure that the sample properly represents the left being tested. The minimum sanple size should not be less than ^bottles, provided that each mold cavity is equally represented in the sample. B. Closures which afford a good seal. SPI-25587 Page 2, 5. PROCEEDS The test bottles should be filled to nominal capacity with water art 23C - 2C then capped tightly and conditioned at 23C - 2C for 24 hours, rrepare the drop testing apparatus so as to assure that bottles hit the impact surface squarely m their bottoms, following the procedure described in ASTM D-2463 paragraph 6 or equivalent. FNC1) Set the platform to the desired height. Flat bottom drop bottles once each. Examine each bottle for evidence of fail ure. My visible rupture us a failure; any appearance of water cn the outside of the ccntainer except Leakage frcm the closure or an external source is a failure, FM(1) Desired height would be that ene agreed upon between buyer and seller. 6. REQUIREMENTS Expectancy of impact survival based an above criteria; survival should be deter mined and agreed upon by buyer and seller. 7. REPORT The report shall include the following: A. Complete identification of the bottle tested including size, style, material, weight, date of manufacture and any other pertinent information. B. Temperature at which test was run. C Nuriber of bottles tested. D. Type of drop (bottom). E. Height of drop. F. Nunber of battles that failed, if any, and location of failures. spi-25588 March 7, 1972 Letter of Ballet to: Item: Technical Coamlttee Recommended Practice for Measuring Toughness of F7C Bottles by Drop Impact Vote: Affirmative / / Negative SIGNATURE COMPANY DATE_ Negative ballots must be accompanied by an explanation to be valid. DEADLINE FOR RETURN OF BALLOT: March 31, 1972 Return Ballot to: Mr. Thomas J. McGrath Plastic Bottle Division The Society of the Flastlcs Industry, Inc. 250 Park Avenue New York, New York 10017 SP1-25589