Transparent paper

A method for producing transparent paper in which a kraft paper is subjected to a mechanical or chemical surface treatment by a paper machine comprising the following steps:

• a) forming the kraft pulp containing at least 30%, to a maximum of 60% bleached softwood pulp and at least 35%, bleached hardwood pulp and further fibre materials,
• b) subjecting the kraft pulp to low-consistency beating or a high-consistency beating until a beating degree of at least 38° SR, until at least 46° SR is achieved,
• c) adding cationic starch, 0.1 to 0.4% sizing agent and up to 4.0% fillers,
• d) sheet formation on a screen of a paper machine,
• e) pressing and drying to a dry content of between 30% and 80%,
• f) and coating the formed sheet at least once with up to 3 g/m2 surface starch,
• g) calendering the formed sheet,
• h) treating its surfaces with a surface treatment agent other than starch, and
• i) drying the formed transparent paper, with the proviso that if at least one of steps f) or g) is applied in addition to step h), steps f), g) and h) are applied once or multiple times in any order.