Flame Treatment For Food Packaging

In the converting industry, in paper and cardboard applications for coupling, our flame treaters allow to prepare the surface of the material in the best possible way before it is coupled with extruded PE, thus eliminating all surface impurities (hairs etc). You can also check the correct amount of moisture in the paper, thus avoiding excessive drying of the paper, which can generate dangerous surface breakage of the paper.

A further advantage in the use of flame treatment for paper, before the coupling with PE, is that of being able to considerably reduce the temperature of the extruded PE, and its specific quantity. If the treatment is used AFTER the process of coupling with extruded PE, the flame polarizes the surface layer of PE, and makes the surface ready to be re-coupled with any other successive layers or different materials.

In the case of aluminum foil, flame treatment allows to degrease and / or clean the surface from pollutants that can contaminate the surface after the production process.

Then the surface flame treatment, can be used to treat plastic film, paper and aluminium for:
PLASTIC FILM

to improve adhesion on coating with extruded PE, and to treat the surface before print

PAPER AND CARDBOARD

in various grades and weights to improve adhesion on surface, before the coating with other materials, and also to softening and adjusting humidity too.

METALLIZED PAPER

to treat the surface of laminating coils or foils (usually aluminium) to clean their surface from dirty oil or lamination grease.

Video

Flame treatnet system is ideal for treatment of :
  • LPB (liquid packaging board)
  • COATED PAPER: LWC, MFC, WFC, Art Paper
  • POLY COATED PAPER
  • SBS COATED FOR WET STRENGHT
  • CUK FOR WET STRENGHT
  • ASEPTIC DRINK BOXES
  • FROZEN FOOD PACKAGING
  • PAPARCUP STOCKS AND PLATE STOCKS
  • SAND PAPER
  • EXTRUSION COATING : PAPER + PP, + PET , + PE, +AL
  • EXTRUSION LAMINATING : PAPER + PP, + PET , + PE, +AL
  • GRAPHIC PAPER
Advantages and benefitis
  • Surface heating/cooling paper
  • Reduction of polyethylene layer thickness
  • No smell
  • Creation of a smooth surface
  • Very high treatment level
  • High production speed (up to 1000 mt/min)
  • Possibility to check the humidity level
Flame Treatment for food packaging
Flame Treatment for Converting Industry
Extrusion coating and converting flame treatment system hardware composition

Referring to the next sketch representing an extrusion coating line and following what has been reported above, it appears clear how flame treatment systems can be beneficially applied both prior and after the PE extrusion step.

1st burner station will be the pre-treatment station, having the duty to prepare paper/paperboard substrates to the following extrusion step. Thanks to design of treater roll, it is possible to warm up the substrate (so significantly improving PE melt adhesion), still keeping correct moisture content inside the paper itself. In this way paper will be not too dry, nor too humid at the extrusion step and the adhesion will be maximized.

Treater roll presence also allows to work with flame very close to the substrate surface (few millimiters), so focusing the combustion energy over it and diminishing energy losses to the surrounding room (esseCI treaters are reported to burn a fifth of gas compared to competitors systems). 2nd burner station, downstream the extrusion step, will have the duty to treat the polymer surface in order to get excellent adhesion for the following printing, coating and metallising phases, as before underlined.

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