US 11,815,429 B2
Pin hole inspection apparatus and method
Chang Rak Kim, Gyeongsangbuk-do (KR); and Jin Ho Kang, Gyeongsangbuk-do (KR)
Assigned to SK SILTRON CO., LTD., Gyeongsangbuk-do (KR)
Filed by SK Siltron Co., LTD., Gyeongsangbuk-do (KR)
Filed on May 24, 2022, as Appl. No. 17/752,171.
Claims priority of application No. 10-2022-0041064 (KR), filed on Apr. 1, 2022.
Prior Publication US 2023/0314270 A1, Oct. 5, 2023
Int. Cl. G01M 3/36 (2006.01)
CPC G01M 3/363 (2013.01) 12 Claims
OG exemplary drawing
 
1. A pin hole inspection apparatus for determining whether or not a vacuum-packed state of a Front Opening Shipping Box (FOSB) vacuum-packed with film paper is defective, the pin hole inspection apparatus comprising:
a receiving unit configured such that the FOSB vacuum-packed with the film paper is received thereon and supported thereby;
an adsorption unit vacuum-adsorbed onto a target part of the film paper configured to surround the FOSB, received on and supported by the receiving unit, so as to pull the film paper;
a displacement measurement unit configured to measure a degree of swelling of the film paper pulled through the adsorption unit; and
a processing unit configured to determine whether or not a pin hole is generated by comparing a measurement displacement value, acquired through the displacement measurement unit, with a pre-stored reference displacement value.