mce SURFACE TREATMENT

Treatment of baking trays has always been a key factor in the baking and pastry cooking industry. Usually oil or vegetable fat is applied to the baking pan in order to prevent the product from sticking during cooking.
Alternatively, three different types of non-stick coating are used: transparent silicone, coloured elastomers and Teflon®. Fluoropolymer-based coatings such as Teflon® are doubtlessly the most efficient and long-lasting. Such coatings offer a series of important advantages:

 

  • non-stick, easy removal of the product;
  • no use of fats or non-stick oils ;
  • lesser need to wash;
  • materials last longer: protection of metal substrates against corrosion caused by salts, acids and other substances present in oven-cooked products;
  • quicker and easier operations when cooking and removing the product from the baking pan;
  • reduction of wastes of the baked product;
  • enhancement of the work environment.

We believe surface treatment using Teflon®, “Teflon®-treatment”, to be the most efficient and convenient choice today. Teflon®-treatment offers greater mechanical resistance with respect to silicone or elastomer treatments. This implies longer lifespan, greater duration over time and greater number of use cycles, alongside providing constant non-stick capacities.
Use of Teflon® has been less common due to its initial cost, but were all factors to be taken into account, use of such coating would be the obvious choice.
According to information gathered from various users, the initial investment is already recovered after 7/10 months of use.

Lower costs:
Using Teflon®-treated baking trays implies not applying oil thereon. This allows saving oil or fat as well as time and energy required to apply such products. Removal of the product from the baking pan is easier and faster.
Maintenance
Teflon®-treated baking trays are easier to maintain: cleaning may be performed by simply using hot water (dishwasher) or soft rags.
Quality
A greasy and dark layer forms on the baking trays treated with oil and fat as it is progressively used over time. This partially obstructs the holes of the baking trays reducing the baking quality, partially detaching sticking on the product ruining the aspect of the latter and deteriorating the taste of the product in question.
Cooking quality
Removal of the product from the baking pan is easy and quick. Teflon®-treated baking trays are cleaned after longer use intervals and requires less time as well as effort.
Quality of the work environment
Use of Teflon®-treated baking trays reduces the amount of oil and fats dispersed in the work environment regarding the air as well as accumulation and deposit surfaces. Inhalation and skin contact with the residue burnt fats reduces in a considerable manner.

Teflon® Fluoropolimero ptfe
Teflon® The Teflon® PTFE Fluoropolymer is a DuPont™ product having a multilayer thermoplastic fluorinated copolymer-based resin having an outstanding resistance to high temperatures, chemical reactions corrosion and stress-cracking. Due to the distinctive extension thermal cycles and the inherent thermoplastic characteristics as well as chemical inertia, the Teflon® PTFE Fluoropolymer residual porosity is very low. Mechanical resistance, antifriction as well as non-stick characteristics allow a wide range of applications in various technical and industrial processes.
Surface treatment using Teflon® has become essential in the food production industry.
After being subjected to a Teflon® treatment, baguette or bread baking trays, cases, pizza or breadstick trays, pastry moulds or biscuit trays offer several advantages with respect to non-treatment or use of silicone, reducing problems regarding sticking and cleaning, making removal of the product from the moulds or trays easier and quicker.
Teflon® is a high molecular weight polymer, composed of Fluoride and Carbon atoms, an inert polymer, suitable for use in the food industry and handling food products. It does not react with other substances including both those used for baking and those present in the dough.

High resistance against chemical agents and solvents:
PTFE is resistant almost all chemical compounds, except for molten alkaline metals, gaseous fluoride and some fluorinated compounds. PTFE is entirely insoluble in water and any organic solvent up to 300°C.
High dielectric characteristics:
PTFE is a good insulator and it has excellent dielectric characteristics. PTFE practically maintains its characteristics in a wide range of environmental, temperature and frequency conditions. It has extremely low constant dielectric characteristics values and dissipation factor; the values remain unvaried up to 300°C.
High thermal resistance:
PTFE is one of the most thermally stable plastic materials. There are no appreciable decompositions at 260°C, so that PTFE, at this temperature, still possesses most part of its properties. Appreciable decomposition begins at over 400°C. It has optimal fire resistance qualities, thus it does not propagate the flame.
Low friction coefficient:
The static friction coefficient (of the first detachment) and the dynamic one are equal thus there is no seizure and stick-slip action. When increasing the load, the friction coefficient decreases until reaching a stable value. The friction coefficient increases with the speed while it remains constant at temperature variations.
High non-stick properties:
The molecular configuration of PTFE confers to its surfaces high non-stick properties. There is no adhesive capable of sticking against the PTFE; only the special treatment, referred to as cementation, is capable of making the surfaces bondable.

 

 

 

Advantages of Teflon®-coating are:
• easy to clean;
• optimal resistance to temperature;
• good resistance to several washing cycles;
• reduces flaw and waste percentages in cooked products;
• considerably lower cleaning and machine stops.


Special attention to the application system because it confers high quality to the Teflon®-treated product. The type of coating we use allows a greater number of cooking cycles with respect to that of the systems used by our competitors hence reducing usage costs.
The thickness of the coating is measured in microns and the number is a company resource which is a result of technique and experience. The base colour is green, but if pigmented it can be made in other colours such as black or brown upon request.

Baking trays & coating
We offer a complete service: baking pan & coating. As a matter of fact, our production organisation verifies the state of used baking trays and establishes the types of maintenance interventions adapted to renovate them. We repair baking trays and use a special technology for removing old coatings preserving the physical integrity of the baking pan, without any deformation, no chemical attack or thermal stress. A second Teflon® treatment completes the reconditioning of the baking pan.

Materials and objects intended for handling food products
Teflon® is an inert polymer, suitable for use in the food industry and handling food products. It does not react with other substances including both those used for baking and those present in the dough. It is suitable for handling food products as provided for by:

 

• 1935/2004 European Regulation

 

• Presidential decree N° 777 23/08/1982

 

• Legislative decree N° 108 25/01/1992

 

• Ministerial decree 21/03/1973 and subsequent amendments

 

• 90/128 EEC; 82/711 EEC, 85/572 EEC, 92/39 EEC, 02/72 and subsequent amendments.

 


Care and Maintenance

 

Don't:

 

  • Do not clean baking trays or other Teflon®-treated equipment using sharp or abrasive objects which would damage the coating jeopardising its efficiency.
  • Do not wash under high pressure (greater than 5 bars) and do not use alkaline or aggressive solutions or solutions not suitable for handling food products.
  • Do not heat empty.
  • Do not use wet or moist.

Do:

 

  • Move Teflon®-treated baking trays and work equipment with due care.
  • Clean strictly using water (in dishwashers at 50°C max), with neutral PH agents, using soft rags.
  • Wash under pressure below 5 bars.
  • Dry baking trays before using again.
  • Be careful not to drop or bang Teflon®-treated equipment when using them. Do not stack.
  • Store the products clean and in a suitable place, dry and free of dust.




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