Adding papermaking PVA water-soluble fiber paper bag paper is a new environment-friendly bag making material. It is a combination of water-soluble fiber (optional different water-soluble temperature index) according to a certain proportion (depending on the production of different paper types) and pulp mixing ( The purpose is to disperse and distribute the water-soluble fibers uniformly, and then produce paper bag paper according to the normal papermaking process. The water-soluble fibers dissolve or semi-melt when passing through the drying roll, thereby enhancing the adhesion and improving the gas permeability.
The addition of paper-making PVA water-soluble fiber paper bag paper has the following advantages: a) paper-making PVA water-soluble fiber, which forms a hydrogen bond force with the free hydrocarbon group in the molecule and the pulp fiber, and because the water-soluble fiber strength is much higher than any pulp fiber cone, and processing The semi-molten bonding effect in the process greatly increases the elongation, tearing, tensile strength, folding resistance and printing surface strength of the finished paper without affecting the ink absorption performance of the paper. Poor paper pulp (waste pulp, straw pulp, wheat straw pulp, mash, etc.) can be used to produce high quality paper, which greatly reduces raw material costs. It is also possible to use the same pulp to reduce the paper weight (1 - 3% of the fiber can reduce the basis weight of the paper by more than 15%). b) Adding paper PVA water-soluble fiber, producing the same quality paper, can greatly reduce the amount of wood pulp added, reduce wood consumption, and meet the environmental requirements of sustainable development. c) Paper-making PVA water-soluble fiber has excellent weather resistance, and it will not change in long-term storage in sunlight and air, so it can improve the shelf life of paper. d) The paper produced by adding PVA water-soluble fiber can be completely recycled. The water-soluble fiber is naturally biodegraded in water after being dissolved in water, and does not cause any pollution to the environment. e) Adjusting the fully soluble or semi-dissolved state of the paper-making PVA water-soluble fiber in the papermaking process, which can change the gas permeability of the finished paper.
1. In terms of cement packaging, China Packaging Technology Association Building Materials Packaging Committee has consistently advocated the improvement of cement packaging, supported the development and promotion of new materials and new line types, and repeatedly formulated reform goals and reform plans to promote the process of abandoning the gap and achieving Certain results. In the recently formulated “Five-Year Development Plan for Building Materials and Packaging Industryâ€, it is clearly stated that the expected target of cement packaging is “to completely abandon the cement paper bags, use the mechanism paste pocket, and develop a series of products below 50 kg.†Breaking through the labor-intensive manual operation mode for many years, replacing the new ideas of armed industry with high-tech and new technology, the scientific and technological content of the main products of building materials packaging has been greatly improved, and the guarantee of quantity is guaranteed by quality. The 2002 new national standard has established the status of the bottom packaging bag.
2. In the aspect of food packaging improvement, especially flour packaging, it has been listed as the focus of future packaging improvement. Its development direction is the bottom packaging bag made of new high-strength reinforced paper.
3. In terms of packaging of chemical raw materials, some products are currently packaged with blister-coated woven bags made of imported equipment, which is in short supply. Some enterprises are seeking to purchase or consult domestic paste bag equipment for the improvement of product packaging. Other aspects such as packaging of tea, medicinal materials, food and other products are also facing packaging improvements, and the preferred bag type is also a bottom bag.
4. The thick material is packed in iron drum wooden barrel and improved into the bottom paper bag packaging, and its superiority has been revealed.
In short, the direction of abandoning the seam to change the paste is affirmative, and the bottom bag has replaced the other bag type in a large area, and its social and enterprise benefits will be fully and fully displayed.
Changhong Imp. & Exp. Co., Ltd. , http://www.ly-foods.com