Product Introduction:
With the advancement of science and technology, especially in the packaging industries of food products such as cakes and cookies, the new generation of BOPP films was used, which is covered with a layer of aluminum vapor for its hygiene on the layer that is in contact with food. After this layer is printed on the film, during packaging by thermal jaws, the edges of the wrapper are connected to each other during 10-15 seconds in a semi-melting state. The disadvantages of this method are the low speed of packaging in production lines and the presence of vapors during heating with jaws. With the increasing growth and development of the packaging industry, a new generation of adhesives was introduced for the packaging of wrappers used in the food industry, which was introduced under the name COLD SEAL adhesive.
Cold seal adhesives are mainly used in companies that produce food wrappers.
After applying glue on the metallized BOPP film with a weight of 1.5 grams per square meter, they are passed through the thermal tunnels at a very high speed at a temperature of 70-80ºC, and after the water evaporates, they are packed in rolls. At the time of consumption, they are under pressure by the jaws and they are active and stick to each other in the shortest possible time (2-3 seconds).
Technical Specifications:
Cold Seal adhesives are a combination of water-based emulsion resins (acrylic and vinyl acetate), natural latex, various additives such as antifoam, preservatives, etc. These adhesives are formulated by combining at least 6 main components with a solid percentage above 55%. The main complexity in the formulation of these adhesives is that they must simultaneously have several properties (pressure sensitive, self-mixing, adhesion to the metallized layer, and finally, lack of surface adhesion for the processability of films) in order to be used in food industry as a cold seal adhesive in the packaging of BOPP wrappers. Four types of base resins are used in cold seal adhesives, which create properties of self-mixing and elasticity, pressure sensitivity, strong connection to the metallized layer as a lining, adjustment of viscosity, drying time, etc. In addition to these resins, additives are used for easy operation, suitable and bubble-free coating, and preservatives to maintain the properties of the adhesive, etc.
Advantages:
* High production volume
* Good quality
International Standards or Permission:
* Food and Drug Administration approval
* Health license
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Type | This product is a final B2B customer product. |