The terms in focus will be in the form of acronyms. Flex your brain muscles and also try to find out the science behind these mentions.
Q. What does a CT finish mean?
A. A CT finish stands for a Continuous Thread finish, which is used in a screw closure — a common type of cap for bottles.
Q. What does ROPP stand for?
A. Roll-on Pilfer Proof, a type of screw cap where the thread is formed by pressure against the container.
Q. ESCR means?
A. Environmental Stress Cracking Resistance (ESCR) is a vital phenomenon to measure the vulnerability of plastic bottles to internal and external stresses.
Q. When was CRC introduced?
A. Child-resistant closure was invented in 1967 by Dr Henri Breault.
Q. What is SS in plastic bottle manufacturing?
A. SS or S/S stands for silkscreen decoration in plastic bottle manufacturing.
(Data Source: Fundamentals of Packaging Technology by IoPP; Encyclopedia of Packaging Technology; Environmental Stress Cracking of Plastics RAPRA by David C; Child-Resistant does not mean Childproof by Michael J Gaunt)