Patent ID: 9278471
Filing Date: 2016-03-08
CPC Classification: B29C,G01B

Claim Text:
1. A method of detecting a presence or a position of a first component in an article, the method comprising: irradiating the article with incident light, wherein the first component has a predefined response to the incident light; detecting light received from the irradiated article; and identifying the predefined response of the first component in the light received from the irradiated article to detect the presence or the position of the first component, wherein the first component comprises a microporous film comprising a semi-crystalline polyolefin and a beta-nucleating agent, wherein the incident light and the light received from the from the irradiated article comprises infrared light, and wherein the first component is free of an infrared absorbing agent and free of an infrared radiation blocking agent selected from the group consisting of titanium dioxide, barium sulfate, magnesium oxide, calcium carbonate, polytetrafluoroethylene microbeads, and polyolefin microbeads.