Super Calendared Kraft Paper is a specialty paper used in the production of packaging for a wide variety of products. It is manufactured from a mixture of fibers, including softwood kraft pulp and cellulose. This process produces a dense paper with high dimensional stability and excellent release properties.
It is available in different grades, each with its own unique characteristics. It can be used in a number of applications such as packaging, labeling and industrial release.
Paper manufacturers use a number of fillers to make this type of paper, which helps to increase opacity and brightness. These fillers are often clay, talc or other mineral additives. These additives are added during the calendering process and help to produce a smoother, more glossy surface.
During a standard calendering operation, the paper is placed between hard metal cylinders and soft cotton or other resilient material rollers. The rollers are pressed tightly against the paper, and the resulting process of compressing, glazing and de-pressurizing enables the paper to be shaped or smoothed.
When the paper is cooled, the calendering process also helps to thin the paper. The result is a smoother and glossier paper.
Supercalendered papers are a special category of kraft paper that has been treated through the calendering process. This process helps to make the paper smoother and glossier than uncoated kraft paper.
The calendering process involves pressing the paper between a set of metal cylinders at high speeds. The cylinders alternate between polished metal and soft resilient surfaces, so the paper is smooth and glossy on both sides of the paper.
It has a high gloss and provides a high-quality surface for printing color photos and fine-line images. It is typically the most economical alternative to lightweight coated paper and it is suitable for magazines, catalogs, and advertising materials.
This paper has a low absorption tolerance, and can be manufactured within narrow caliper tolerances. It also has very good die-cutting performance.
In addition, this paper is ideal for consistent silicone coatings. It is especially suitable for double sided liners that are placed in narrow release differentials.
Supercalendered kraft paper is a relatively new addition to the paper manufacturing industry and was created to provide a high-quality, more cost-effective alternative to lightweight coated papers. The highest grade of this paper is typically used in the magazine printing process, while lower grades are often used for newspaper inserts and other advertising materials.
The papers can be made in a variety of substances and colors, but they are typically white or off-white. The opacity of these papers is less than that of their coated counterparts, but the papers have excellent lay-flat and dimensional stability features.
These papers are available in a variety of sizes and thicknesses. They are commonly used for labels in sheet and roll format, as well as for other packaging applications.
The main factors that drive the growth of this market include the increased demand for kraft paper in the food and beverage, health care, consumer sustainability, construction, and other industries. It is also expected that the increased use of kraft paper will lead to more product innovation and higher levels of productivity in these industries.
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