Method of determining stretch characteristics of thermoplastic a

Details Method of determining stretch characteristics of thermoplastic a Method of determining stretch characteristics of thermoplastic a

1992-10-21

1994-11-22

Williams, Hezron E.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73 37, G01N 318

Patent

active

053657926

ABSTRACT:
Disclosed are a method and apparatus for determining the stretching characteristics of thermoplastic articles such as bottles on a consistently accurate basis by making an initial measurement such as dimension or volume, stretching the article to the onset of strain hardening, and correlating the measurements to a physical property such as inherent viscosity, intrinsic viscosity or molecular weight of the thermoplastic article.

REFERENCES:
patent: 4090394 (1978-05-01), Herman et al.
Bueche, F. Tensile Strength of Plastics . . . Temperature. Journal of Applied Physics. vol. 26. No. 9. Sep. '55. pp. 1133-1140.
Polymer Bulletin; No. 8; 1982; pp. 480-484. Cavrot et al. "Tensile Drawing of Poly(Ethylene-Terephthalate) Ultimate Properties".
International Journal of Engineering Science; vol. 13; No. 6; 1975; UK; pp. 563-578. Schmidt. "Biaxial Stretching of Heat-Softened Plastic Sheets Using an Inflation Technique".
Polymer Engineering and Science; vol. 21; No. 4; Mar. 1981; USA; pp. 227-232; RHI-SAUSI et al. "A Biaxial Extensiometer for Molten Plastics".
Modern Packaging; vol. 30; No. 9; May 1957; US; pp. 167-168, 250 and 252. Mannheim et al. "Testing Film Package Strengths".
Polymer Testing; vol. 9; No. 1; 1990; UK; pp. 53-70. Axtell et al. "Elongational Rheometry of Thermoplastic PET in the Rubbery Region".

Affiliated with

Also associated with

Rating

Method of determining stretch characteristics of thermoplastic a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of determining stretch characteristics of thermoplastic a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of determining stretch characteristics of thermoplastic a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1983629