Method for producing a packaging from a recyclable material

A method for producing a packaging for enclosing a substance, comprising:

• providing a flat sheet made of a recyclable paper material comprising a base layer made of a paper material and a sealant layer and having two opposite side edge sections, wherein the sealant layer is provided on at least one of two opposite side surfaces of the flat sheet as a coating or a laminate that acts as a sealant during heat sealing,
• forming the flat sheet into a tube by folding the flat sheet so that the two side edge sections at least partially overlap each other at an overlapping section,
• heat sealing the tube along the overlapping section to form a longitudinal sealing joint,
• heat sealing the tube across the longitudinal sealing joint to close the tube with a first traverse sealing joint at a first tube end,
• filling the tube with a substance to be packed,
• heat sealing the tube across the longitudinal sealing joint to close the tube with a second traverse sealing joint at a second tube end opposite to the first tube end with respect to the substance to be packed so as to form the packaging enclosing said substance,
• the method further comprises applying glue only to triple point sections of the flat sheet by:
• applying a first spot of glue onto the flat sheet at a first triple point section at which the longitudinal sealing joint and the first traverse sealing joint intersect,
• applying a second spot of glue onto the flat sheet at a second triple point section at which the longitudinal sealing joint and the second traverse sealing joint intersect, and
• wherein the first and second spots of glue seal the respective first and second triple point sections upon the heat sealing of the respective tube end to form the respective traverse sealing joint.