SURFACE AND COATING TECHNOLOGY FOR FLEXIBLE PLASTIC FOOD PACKAGING

flametreatment, esseci , flame, treaters

 

Extrusion coating is a process used in food packaging industry

 

to coat complex materials used for aseptic packaging, such as containers for milk, wine, fruit juices , water, etc…

Materials properties are very important in food packaging industry. 

Efficient barrier film against external agents is necessary in food package.

In order to guarantee the barrier effect, then , food quality preservation different material layers are coated in flexible package: paper, cardboard, aluminum, and plastic materials such as PE polyethylene, PP polypropylene, PET Polyethylene terephthalate.

Different substrates are coated  in flexible packaging material  !

 

Watch this  NICE  video !

 

Good adhesion of these different materials is crucial for a good package.

 

Extrusion coating is a critical  process, for food packaging industry. So, becomes compulsry, to solve problems associated with adhesion. For this reason,

surface treatment results very useful on different substrates to be coated.

To obtain it, along the extrusion line, one surface treatment station, (or two in case of pre-post coating), improves drastically , the surface energy , then adhesion , of coated material. For same reason, also along converting line too there is a surface treatment station to refresh and /or optimize materials characteristics. In the converting line it’s compulsory a surface treatment to prepare the material to be further painted or laminated.

Both these lines:  extrusion and converting lines, can be equipped with various  alternative systems for pre-treatment, such as 

plasma treatment, corona treatment  or the most important and efficient system : flame treatment.

 

flame treatment in polypropylene extrusion line

Surface Flame Treatment

is a “young” technology,

despite more than half century of his life.

EsseCI flametreaters

it’s spread in

extrusion and converting line

all over the world !

 

 The surface polarized flame treatment

 

Flame treatment it’s most widely used treatment, because it can replace all other treatments. In the United States is the most frequently used to improve materials adhesion. Emphasizing the important development of this technology introduced by “ESSECI” ,we can describe as follow, the most relevant and important improvements introduced that they are :


◊ the use of a combustion analyzer

flame temperature and composition can be adjusted within a wide range so as to have different possibilities of O2 free (it means, to have air/gas mixture by reducing or oxiding or stoichiometric ratio )on the different chemical compositions of paper and cardboard, or polypropylene, or aluminum or …

the use of thermostatized and surface chromed treatment roll

The ability to heat or cool the film of material passing on the roll surface, so as to adjust web temperature and the right process conditions for the selected material; the certainty that the film passes always at the same distance from the flame (if there’s not variation on burner gap ) ; reduction of burner gap in a field 4 – 6 mm, allows an energy savingon gas consumption,  (depending on line speed) at least twicw of other systems, where gap is larger. This type of plant is widely used in PP polypropylene and PE polyethylene extrusion lines and converting lines.

 

can you see  all flame treatment system elements, CLICK HERE

 


surface flame treatment extended

to the paper and cardboard

was natural

and it’s a real step forward in technology

and in the process of extrusion coating.

 

The benefits achieved arising by

the combustion analyzer

 ( different flame compositions or flame temperature setting)     

and

the treatment roller     

( heating  or cooling  web )     

produce extreme flexibility on ” ESSECI ” system flame treaters   


that allows to treat without any problem any type of material,    

 especially very thin papers,    

 with improvement of quality    

economic saving
(reduction on gas consumption)     

 increase on production
(the extrusion rate increases by 20%)

” ESSECI ” surface flame treatment on paper and cardboard

 following results :

◊ elimination of hairs and small growths that may be present on the surface ;

◊ elimination of humidity or water evaporation , which could cause air bubbles between the two layers to be laminated ;

◊ decontamination of oils or fats that may be present due to previous contact with plastic surfaces ;

◊ creation of bonds on the surface to be coupled due to free oxygen in the flame. The material oxidizes the surface and is thus improved the adhesion with other material .

” ESSECI ” surface flame treatment on alluminum

following results:

◊ elimination (burning ) of waste oil mill ;

◊ elimination (burning ) of solvent;

 

 

ESSECI flame treaters is italian company

that customizes systems flame treatment

according to customer needs all over the world!

 

FLAME TREATERS, FLAME TREATMENT, ESSECI SRL

 

 

 

 

SURFACE AND COATING TECHNOLOGY FOR FLEXIBLE PLASTIC FOOD PACKAGING ultima modifica: 2015-07-20T12:46:57+00:00 da Ufficio Stampa