Foldable and sealable packaging bag

Abstract

Disclosed is a foldable and sealable packaging bag, including one piece of packaging bag sheet, which divided into a first bag sheet and a second bag sheet. Both sides of the first and second bag sheet are provided with connecting ends, by means of the connecting ends, the first and second bag sheet are connected to form a containing cavity. The first bag sheet and the second bag sheet are formed by folding one piece of material sheet. The first bag sheet and the second bag sheets are connected hermetically to form a containing cavity that can accommodate various items, and the opening is sealed by a sealable part. The structure of the packaging bag in this embodiment is simple, convenient for production, and can reduces the waste of raw material sheet.

What is claimed is: 
     
         1 . A foldable and sealable packaging bag, wherein the foldable and sealable packaging bag comprises:
 a packaging bag sheet, the packaging bag sheet comprising a first bag sheet and a second bag sheet, both sides of the first bag sheet and both sides of the second bag sheet being provided with connecting ends, and each connecting end of the first bag sheet being tightly connected to each corresponding connecting end of the second bag sheet so as to form a containing cavity for loading items;   a first end of the first bag sheet being connected to a first end of the second bag sheet to form a first foldable part;   a sealable part, one end of the sealable part being connected to a second end of the first bag sheet to form a second foldable part, and the sealable part being connected to the surface of the second bag sheet to seal the containing cavity; or   one end of the sealable part being connected to a second end of the second bag sheet, and the sealable part being connected to the surface of the first bag sheet to seal the containing cavity.   
     
     
         2 . The foldable and sealable packaging bag according to  claim 1 , wherein: both the connecting ends of the first bag sheet and the connecting ends of the second bag sheet are provided with adhesive, and each connecting end of the first bag sheet is tightly connected to each corresponding connecting end of the second bag sheet through the adhesive. 
     
     
         3 . The foldable and sealable packaging bag according to  claim 1 , wherein: the first foldable part comprises a first folding line which extends along both sides of the first bag sheet or both sides of the second bag sheet;
 the first bag sheet and the second bag sheet are bounded by the first folding line and flipped over each other so that each connecting end of the first bag sheet is connected tightly to each corresponding connecting end of the second bag sheet.   
     
     
         4 . The foldable and sealable packaging bag according to  claim 1 , wherein: the first foldable part comprises a middle bag sheet, the middle bag sheet comprising a first sheet block and a second sheet block, a first end of the first sheet block being connected to a first end of the second sheet block to form a second folding line which extends along both sides of the first sheet block or both sides of the second sheet block;
 the first sheet block and the second sheet block are bounded by the second folding line and flipped over each other so that the surface of the first sheet block is stacked and connected to the opposite surface of the second sheet block.   
     
     
         5 . The foldable and sealable packaging bag according to  claim 4 , wherein: a second end of the first sheet block is connected to the first end of the first bag sheet to form a third folding line, and a second end of the second sheet block is connected to the first end of the second bag sheet so as to form a fourth folding line. 
     
     
         6 . The foldable and sealable packaging bag according to  claim 4 , wherein: each of two sides of the middle bag sheet is provided with a cut, the inner side of the cut being connected to the second folding line. 
     
     
         7 . The foldable and sealable packaging bag according to  claim 1 , wherein: the second foldable part comprises a fifth folding line which extends along both sides of the first bag sheet or both sides of the second bag sheet;
 the sealable part is bounded by the fifth folding line and flipped over to stack and connect the sealable part onto the first bag sheet or the second bag sheet.   
     
     
         8 . The foldable and sealable packaging bag according to  claim 1 , wherein: the sealable part is provided with a connecting structure which extending along both sides of the sealable part.