Apparatus for forming sealing portion for folding secondary battery pouch

An apparatus for forming a sealing portion for folding a secondary battery pouch, the apparatus comprising:

• first and second pressing bars disposed to face each other with a sealing portion for folding therebetween to apply pressure for flattening the sealing portion for folding that is defined by an edge of the secondary battery pouch for sealing an electrode assembly accommodated therein;
• first and second pressing surfaces provided at the first and second pressing bars, respectively, and disposed to face the sealing portion for folding;
• a forming protrusion formed on the first pressing surface and configured to form a folding guide line on the sealing portion for folding by pressure applied by the first and second pressing bars;
• and
• a forming groove portion provided on the second pressing surface and disposed to face and correspond to the forming protrusion,
• wherein a surface of the sealing portion for folding is compressed by the forming protrusion and another surface of the sealing portion for folding is tensioned and extended by the forming groove portion, whereby the folding guide line is formed.