Trace evidence encompasses a number of possible sample types, from fibers to hairs to gunshot residue. One of the commonly encountered types of trace evidence is tape evidence. In order to properly understand tape from a trace evidence perspective, it is helpful to understand the manufacture process of the product.
This week, I have been attending the course, “Manufacturing & Testing of PSA Tapes,” at Chemsultants in Mentor, Ohio. The course is held by PSTC (Pressure Sensitive Tape Council). It includes in depth lecture and demonstrations on the manufacturing processes of PSA (pressure sensitive tape), along with physical/analytical testing of the product.
The course offers the opportunity to not only learn about processes from experts in the tape industry, but also to gain some insight into how tape manufacture affects forensic analysis of the different components of this type of material (e.g. adhesives, backing, etc.).
As a Forensic Scientist that deals with the examination of tape evidence, I found this course extremely helpful and would recommend it to anyone looking for a better understanding of tape manufacturing processes and physical properties.
Resource links if you are interested in learning more about the course: