Paper
Paper products are wax coated to preserve the integrity of goods packed or covered with this material, in particular of those related to the food industry, where goods must arrive in optimum conditions to the final customer.
Waxes improve diverse properties and characteristics of the paper material, mainly packing, structure, sealing and protection, which are critical aspects when paper is exposed to a humid environment or to freezing conditions.
Wax modifies the paper structure, improving the following properties:
- Resistance to humidity and grease.
- Sealing and insulation capacity.
- Structure weight.
- Brilliance.
- Sliding capacity.
- Hot and cold adhesive characteristics.
For this particular application, waxes can be used alone or in combination with adhesive or plastic formulations, depending on the final use of the paper material.
Selection of the wax products and application method is carried out in accordance with the required properties and characteristics of the paper material, as well as with the final use of the treated paper. Currently, there are three industrial processes utilized for wax application on the paper structure:
Application Systems for Wax Products on Paper
Process |
Application Mode |
Typical Use and Application |
Humid Wax Coating |
By paper immersion or by means of a roller to apply wax on the paper surface. |
When wax cools down on the paper surface, it gets solidified and forms a surface coating, not penetrating the paper fiber. This system is commonly used to manufacturing the paper used in candies and chocolate wrapping. |
Dry Wax Coating |
Wax is applied on the paper surface by means of a roller. The paper must be preheated to facilitate the wax penetration in the paper fiber, performing its sealing function. |
This process is utilized to give the paper adequate sealing characteristics for its use as insulator or recipient. It is commonly used in the paper cone manufacturing, and when the paper material is used to protect vegetable products and fruits. |
Rolling |
Binding two paper segments, or a paper segment with a film of aluminum, polyethylene or some other packing material. Wax can be applied on one or the two sides of the paper, binding the segments by means of a rollers set. |
Wax utilized in these processes must have appropriate sealing properties for the application of the final structure. Rolled paper-aluminum structures are used for packing diverse food products, such as chocolate. |
Application Table for the Paper Industry
Code |
Product |
Color |
Oil Content |
Application
System |
Application |
Remarks |
1060 |
Mulpax 1060 |
White |
< 0.5% |
Humid |
Resistance to humidity and grease. |
Application in paper materials that preserve food products or protect them during microwave oven processing. They are applied at 8 to 14 g/m2. |
1061 |
Refined Paraffin Wax |
White |
< 0.5% |
Humid |
Good sealing capacity and excellent brilliance and sliding characteristics. |
Application in paper materials that preserve food products or protect them during microwave oven processing. They are applied at 8 to 14 g/m2. |
1504 |
Cubricer |
White |
< 0.5% |
Humid |
Resistance to humidity and sliding. |
Application in paper materials that preserve food products or protect them during microwave oven processing. |
1022 |
Refined Paraffin Wax 130
|
White |
< 0.5% |
Dry |
Resistance to humidity and sliding. |
Generally utilized for food products. The application is carried out at 8 to 14 g/m2. |
2055 |
Cream Paraffin
|
Beige |
< 4.0% |
Dry |
Resistance to humidity and sliding. |
Application carried out on non-food products, at 8 to 16 g/m2. |
2033 |
Microcrystalline Wax |
Brown |
< 2.0% |
Rolling |
Sealing capacity and grease resistance. |
Application carried out on non-food products, at 8 to 16 g/m2. |
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