公开(公告)号：US20040218660A1

公开(公告)日：2004-11-04

申请号：US10254316

申请日：2002-09-25

Applicant: ILLINOIS TOOL WORKS INC.

Inventor： Dieter B. Heerdt ,  Paul M. Jenkins

IPC: B32B031/00 ,  G01J005/00

CPC classification number: G01J5/0022

Abstract: A hot melt adhesive sensing system and methods including detecting (410) multiple areas of a target, for example a hot adhesive material, by sensing changes in temperature with a corresponding number of thermal sensors, summing (420) an output of the thermal sensors, and evaluating (430) the summed output by comparing the summed output with a reference, the results of which may be assessed relative to a specified tolerance.