Patent ID: 6516587
Filing Date: 2003-02-11
Classification: B65B

Abstract:
A plastic bag opening method for opening plastic bags in a stack, one by one, where each of said plastic bags has a first edge of its opening portion elongated and extending past a second edge, said first elongated edge lying below said second edge and is provided with two pin holes and said plastic bags are held together with pins being inserted into said pin holes of said plastic bag, said plastic bag opening method comprising steps of:inserting two pins, having upper ends free, into said pin holes of said plastic bags to hold said plastic bags together in a stack to be released one by one; pressing said elongated edges of said plastic bags at a portion between said two pin holes, and simultaneously blowing air from an oblique angle above toward an opening portion of a top plastic bag to form an opening of said top plastic bag; and inserting an opening member into said opening of said top plastic bag to enlarge said opening so that said pin holes pass over said free ends of said pins by action of the air blowing or action of said opening member without tearing said top plastic bag at the portion of said pin holes.