Accession Number : AD0163795

Title :   Infrared Radiometric Detection of Seal Defects.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Lampi,Rauno A. ; Hu,Kwoh H. ; Osborne,Richard F.

Report Date : 18 JUL 1972

Pagination or Media Count : 7

Abstract : The patent describes a rapid, non-destructive test for discovering seal defects in flexible packages wherein the package seal is passed between a narrow beam heat source and a detector sensitive to infrared energy. The detector senses variations in the radiant energy emitted from the seal, such variations resulting from a change in thermal conductivity due to the presence of voids, wrinkles, irregularities or occluded matter in the seal.

Descriptors :   (*FOOD, PACKAGING), (*PACKAGING, HERMETIC SEALS), (*HERMETIC SEALS, NONDESTRUCTIVE TESTING), (*PATENTS, PACKAGING), DEFECTS(MATERIALS), INFRARED SCANNING

Subject Categories : Food, Food Service and Nutrition

Distribution Statement : APPROVED FOR PUBLIC RELEASE