In the production process, the company uses a large number of raw materials and a variety of modern materials of both domestic and imported production. Attention to raw materials, their characteristics and properties, constant work with suppliers and laboratories is a guarantee of reliable continuous operation of the company’s production complex, quality and safety of products.
Materials used in production:
- Fluff pulp – we use high-quality bleached (TCF – total chlorine free) wood pulp (mainly softwood), both untreated and treated, from the world’s leading manufacturers in Finland and the USA. The pulp comes in pressed form in rolls, ready to feed into the production plants. For the correct and stable production process, we require controlled: whiteness, moisture, pulping energy level, absorption properties of the incoming pulp.
- Tissue paper is a special type of thin crepe paper with low weight per square meter (usually from 13 to 40 g/sq.m.) and is intended for processing into paper products for sanitary purposes: toilet paper, paper towels, napkins, disposable paper medical products, etc. It is produced on special paper machines (PMs) from both virgin (bleached coniferous or deciduous pulp) and recycled fibers (recovered paper). In our plant, backing paper is used to form the absorbent layer of diapers, playing a supporting, distributing and binding role for the fluffed pulp and polymer additives.
- A superabsorbent polymer (SAP) (also called “hydrogel”) is a sodium salt of polyacrylic acid with the chemical formula [-CH 2 -CH (CO 2 Na) -] n, it can absorb and retain extremely large amounts of liquid relative to its own mass and volume (up to 100 ml of liquid per 1 gram of SAP). The polymer absorbs through numerous hydrogen bonds with water molecules. In distilled water, it can absorb as much as possible of its own volume, forming gel crystals containing up to 99.9% of bound water. When electrolyte solutions are absorbed, absorption decreases.
- Spunbonded nonwoven material is a group of materials made of fibers produced from 100% polypropylene melt obtained by spunbonding and bonded by spot thermal fixation. Spunbonded fabric has high strength and elasticity, hypoallergenicity, possibility of giving it hydrophobic or hydrophilic properties. For the covering layer of diapers we use hydrophilic (water absorbing) spunbonds of different specific density and color.
- Non-woven materials SMC (SMMS, SMMSS) are composite materials – “sandwiches” of 100% polypropylene, which consist of layers of spunbond (C) and meltblown (M), material produced in the same way, but, unlike spunbond, its fibers are “tangled” laid on the conveyor without pulling, as a kind of polypropylene “wool”, which is further compacted by calendaring rolls. Meltblown has increased hydrophilic and barrier properties against microorganisms, which can improve the protective properties of medical underwear and clothing made of CMC materials. Effective use of meltblown as a filtering layer in surgical masks and other protective products.
- Spanlace nonwoven material – made by a process in which viscose and polyester fibers are woven with water jets under high pressure. The usual composition ratio is: 70% viscose + 30% polyester, but other types are also possible. The material is highly absorbent, tactilely similar to natural cotton fabrics. It is used in the manufacture of medical clothing, dressings and hygiene products.
- Polyethylene film – used for a protective waterproof layer of diapers (mostly having a corona or micro-embossed surface – to give non-slip properties). Also, different types of films are used for packaging products and in the manufacture of some other products. Films made of the following types of polyethylene are used:
- Low density polyethylene (LDPE) – PE with a relatively highly branched macromolecule and low density (0.916-0.935 g/cm³). Its production process takes place at very high pressure of 100-300 mPa and temperature of 100-300 °C, therefore it is called the same as high pressure polyethylene (HDPE). LDPE film and bags are smooth and shiny and do not crumple. LDPE is more resistant to punctures and cuts.
- High density polyethylene (HDPE) – PE with a linear macromolecule and a relatively high density (0.960 g/cm³). It is also called low-pressure polyethylene (HDPE) and is produced by polymerization with special catalyst systems. HDPE bags are dull and rusty, crumple more, but are very resistant to stretching and can withstand a heavy load, are more economical to produce.
- Medium-density polyethylene (MDPE) – PSD have a density of 0.926 to 0.940 g/cm3. Medium pressure polyethylene PSD films and bags are made from a mixture of LDPE and HDPE, so they combine their properties depending on the proportions of LDPE and HDPE used.