VACUUM BAGS - SPECIAL FILMS

THE DIFFERENCE BETWEEN SIDE-SEAL BAGS AND TUBULAR BAGS

TUBULAR BAGS

 

 

Tubular bags are co-extruded in one sole production process in 3 or 5 layers (PA/PE or PE/PA/PE) at very high temperatures. HEVEL only produces the 3-layer model for vacuum bags. This gives less leakage.

 

From this tubular film, bags are cut to measure and sealed with one sole bottom-seal. When the bag is held against the light, vertical extrusion-stripes can be seen.

 

Disadvantages
  • Higher price.

     

     

     

Advantages
  • No de-lamination.

  • Only one seal.

  • Less chance of folds.

  • The bags are flexible and have more stretch, so less leakage caused by sharp products.

  • The bags are clear.

     

    Extra advantages from tubular bags produced by HEVEL:

 

  • An aseptic interior by means of an Absolute filter. The manufacturing process is monitored by Eurofins Food Netherlands B.V.

  • The bags are produced under HACCP-controlled conditions. HEVEL is ISO 22000 certified by Lloyds Register Quality Assurance.

  • The raw materials used are of good, constant quality.

  • Co-extruding ánd bag-making on the most modern, computerized high-tech production lines.

  • Long-term experience in the production of vacuum bags and thermo-forming films (since 1975) 

 

 

SIDE SEAL BAGS

 

 

Generally spoken, side-seal bags are made of Polyethelene film, upon which outside Nylon film is sticked. This is called lamination. This flat laminated film is then sealed to measure with 2 or 3 seals. When the bag is held against the light, the lamination print can easily be seen.

 

Disadvantages

 

  • The ‘sticklayer’ can let loose (de-lamination), especially in the deep-freezer.

       The seal is always the weak spot in vacuum bags. The more seals, the more weak spots.

  • The chance of folds occuring in the customer’s seal is considerably higher. This leads to more leakage.

  • The film is harder, which causes bones to prick through more easily.

  • The bags look troubled due to the lamination print.

  • Side-seal laminated bags by nature contain a lot of bacteria on the inside.

     

     

     

Advantages
  • Low price.

     

     

     

     

     

     

     

     

     

 
 
 
 
 
 
 
 
 

HEVEL

VACUUM BV

Sluispolderweg 44B

1505 HK Zaandam - Holland

Tel  +31 (0)75 - 617 7637

 

E-mail: sales@hevel.nl