What are Tissue Papers?
The term "tissue" describes products made of low weight, dry crepe and some uncreped paper, such as toilet paper, kitchen towels, tissues, facial paper, napkins, towels, etc. The origin of the fibers may be virgin fibers or recycled fibers. Properties of important tissue papers are the absorption of elastic energy along with good flexibility, softness paper towel superficial, bulk and high capacity for absorption of liquids. The largest and most important use for unisex papers is for hygiene products, such as: ¾ Hygienic Papers;Viva Signature Cloth TaskSize Paper Towels, Soft & Strong Kitchen Paper Towels, White, 12 Family Rolls (143 sheets per roll)
- Kitchen Towels;
- Double Sheet Paper Towels;
- Facial Tissue;
- Disposable diapers;
- Hospital Paper;
- Sanitary Napkins;
- Refreshing towels.
Tissue paper is used for the production of a huge quantity of products, and the quality requirements vary according to the purpose of the product and the expectations of the consumer. In some products, softness may be the fundamental property, while in others it may be resistance. In some situations, the product needs to be water absorbent, in some cases oil. The physical properties that determine the quality of a tissue paper are bulk, softness and absorption capacity.
According to these characteristics, paper can be classified into three quality categories according to the different requirements of the tissue markets in the world: conventional, intermediary and premium. The main quality requirements that can be Hedgehog tissue paper are:
- Grammage; ¾ Absorption;
- Softness;
- Thickness (Bulk);
- Tensile strength
- Whiteness;
- Crepe, elongation;
- Appearance.
These characteristics may vary according to the product, but the following properties may be considered as basic characteristics: Formation: Good formation is extremely important to ensure uniformity of the cross-section of the sheet of paper; Weight: usually in Brazil, weights of 18 to 20 g / m² for toilet paper, 30 to 40 g / m² for paper towels and 16 to 20 g / m² for double-sheet towels and napkins, variations may be according to the manufacturer. Humidity: should be controlled maintaining a moisture content between 7.0 and 8.5%, for better runnability of the process.
A content of 5.0 to 6.5% ensures the sheet characteristics of roughness, low surface softness in addition to intrinsically damaging the creping. And a very high humidity, between 9.0 and 10.5%, directly reduces tensile strengths and elongation of the sheet, also damaging the conversion of the paper; Tensile strength: important to avoid the paper's ability to withstand stresses during rewinding and during its application; Stretch: characteristics widely used to evaluate the quality of tissue papers, being directly related to creping; Softness (superficial and volumetric): property that gives the papers pleasant characteristics of feel and sensation of softness, as for the appearance of the product; Resistance to humidity: important for application of the paper, ensuring that it does not disintegrate, in contact with moisture; Bulk (specific volume): is the degree of compressibility of the paper.