Dual directional opening type mail envelope

Abstract

A dual directional opening type mail envelope has opening start section with cutting part and cutting lines marked with arrows in the center that can be cut from both sides and a cutting part that had been partly cut beforehand. Dual directional opening type mail envelope includes an opening start section with a cutting part and cutting lines marked with arrows that open when the thumb and index finger of the left hand flips the cutting part back where first and second cutting line are opened cleanly and rapidly and as thumb nail on the right hand is inserted into the gap to move left and right as cutting lines are comprises of arrows placed with distance which ensures an easy and quick opening of the envelope will be opened rapidly as a flying arrow without leaving any residue.

What is claimed is: 
     
         1 . A dual directional opening type mail envelope comprising an opening start section in the center for envelope to be cut open in both directions from the center,
 wherein a part of the cutting start section is cut beforehand to form a cutting part, the cutting part is provided with an insert groove, both ends of the opening start section are provided with first and second cutting lines, respectively, the first and second cutting lines are formed by a plurality of arrow-marked cutting lines of arrow shape placed consecutively and repeatedly, the arrow-marked cutting lines being placed with distance from each other, and   wherein the arrow-marked cutting line comprises a cross cutting line and wedge cutting line that had been cut beforehand, one end of the cross cutting line is connected to obtuse part of the bent section in the wedge cutting line and the other end is not connect to acute part of the bent section in the wedge cutting line to be spaced apart therefrom, so a paper part that has not been cut exists between the other end part of the cross cutting line and the wedge cutting line.   
     
     
         2 . The dual directional opening type mail envelope of  claim 1 , wherein the opening start section includes at least one arrow-marked cutting lines of arrow shape placed with distance from the end part of cutting line. 
     
     
         3 . The dual directional opening type mail envelope of  claim 2 , wherein the cutting part is formed in half circle shape as a whole, and the arrow-marked lines are placed with distance from each other when there are a plurality of the arrow-marked cutting lines. 
     
     
         4 . The dual directional opening type mail envelope of  claim 1 , wherein arrows of the arrow-marked cutting lines of the first cutting line and second cutting line are placed in opposite directions in order to open in different directions toward both sides from the opening start section.