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oneply technology

The single-layer tissue paper with extraordinary features: best in class softness while achieving the lowest emissions and energy consumption.

Click here to download the datasheet comparing the OnePly technology with standard tissue processes.

The OnePly® technology: single layer, low emissions, extraordinarily dense tissue paper

OnePly is a product developed by LC Paper aiming to achieve the goals of TAD paper quality with a much lower energy cost. This product is designed with one single ply, unlike conventional tissue papers with two or three layers. Since the minimum weight established for this product is above 30 g/m2, it ensures that there no free spaces between fibres , reaching a good internal capillary. The intense creping operation, increases the height of the wave with a high frequency, achieving a product with excellent absorption capacity and softness. The bulk desired can be easily achieved with a proper embossing process.

With this design, the tissue paper used for the Away from Home markets has reasonable transportation costs. Its lower energy consumption level, labels this product with low CO2 emissions as well as a product with a lower price.

The final result is a paper with more absorption per gram than the TAD, smoother, and with a better price. In addition to this, it has a higher tensile strength which enables the converting lines to reach their maximum productivity compared to conventional tissue papers. The One ply has the Ecolabel and it is manufactured under ISO 14001, with the lowest water consumption, 2.5 m3/t, and the lowest carbon footprint for tissue products.

Tissue paper as the final product is often used in combination with two, three or four layers. This definition has been made from the idea that the lower the weight of paper, the softer it is. Actually it is not as simple as it sounds. When a paper is attached to another, it is laminated, it is always embossed. In most cases, a low creping tissue is used in order to get a more intense and lasting pattern. Moreover, the fact that it has a low basis weight it therefore has a lower resistance, leading to a change in fibre composition with a high content of long fiber. These two factors already mentioned, long fiber and low creping, provide a rough paper. Therefore, the old argument of higher softness with lower weight has been contradicted. In fact softness does not depend entirely on the weight but how paper is produced. You can easily see that a heavyweight paper, 38 g/m2 with an intense creping could actually be softer than a standard 17 g/m2.

This reasoning leads us to believe that tissue paper can be made differently, taking all of the properties into account, a reasoning that led to a process innovation introduced by the TAD. See comparison of the properties of the three papers, a conventional, a TAD and a One Ply paper:

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If we look at the absorption capacity, as the amount of water that can absorbed per gram of paper it can be noticed how Premium quality papers, TAD and One Ply have an absorption between 15 and 18 ml/g, while conventional tissue papers have values between 7 and 11 ml /g. This is true regardless of the bulk provided by the paper as well as its resistance. Capillary flow is different from the absorption to the walls of the fibers. Absorption causes the fibre to swell. The amount of water that is transported by fibers differs from the water transported by inter-fiber pores. Water absorbed into the fibers directly increases the volume of the paper in the same amount, unlike the penetration into the pores which does not do so. The water is absorbed into the fibers first and inter-fiber pores after a while.

From this observation a tissue product can be defined differently. If the product is a paper towel to dry hands or kitchen towel used to dry surfaces, defined as 22 + 22 g/m2, 44 g/m2 in total, specific absorption is about 10 ml g. If, instead, you use a One ply product or a TAD with a specific absorption of 16 ml/g, the same absorption capacity offered by a conventional tissue paper 22 + 22 is reached with a grammage of 28 g/m2. The new product can be manufactured with a weight far below conventional paper, even below 28 g/m2. It could also be easily designed with 34 g/m2 or 36 g/m2. The result is a new product with 18 or 20% less material. In the case of TAD the bulk obtained is practically the same as the towel paper with a previous type of embossing. In the case of one ply tissue, it should also be embossed in order to obtain the same bulk. A very important aspect in the new design, in addition to material savings, is its tensile strength. Indeed, paper resistance depends upon its specific strength and weight.

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To develop this product LC PAPER 1881 has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 698298.

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