7 suggestions of the hottest experts on the develo

2022-08-16
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Experts' seven suggestions for the development of paper packaging materials

among the four pillar packaging materials of paper, plastic, metal and glass, paper sensors: sensors are important components of the accuracy and force measuring stability of experimental machines. Products grow fastest and are the cheapest. They can be recycled or used as fertilizer, and can purify the environment. Industry experts put forward seven suggestions for the development of paper packaging materials:

market demand for high-quality and lightweight packaging paper

in order to make full use of natural resources and reduce the cost of mailing and transportation as much as possible, producing a variety of low-volume paper, paperboard and packaging carton paperboard is the current development trend of paper products all over the world. China has put forward the problem of low quantity in paper, letterpress and offset printing paper, paper bag paper and so on, and has begun to solve it. Packaging paper and paperboard should also achieve high-quality lightweight and variety diversification. In particular, according to the large demand for high-end packaging boxes in the domestic market, the corrugated base paper and kraft linerboard with the largest consumption should be added with three low quantitative products on the premise of appropriately improving the quality of the original products, that is, the corrugated base paper should be added with a variety of 100g/m2, and the Kraft linerboard should be added with a variety of 210g/m2. The results of the supply side structural reform show two kinds: square meter and 200g/m2

research and development of functional special paperboard for food packaging

the current variety of white paperboard in China is single, and it is not classified to distinguish different packages, let alone produce special food packaging paperboard for different functions of packaging materials required by different foods

although China has regulations on the raw materials and health indicators of food packaging paper, there is no cardboard variety specially used for food packaging, so that a variety of food boxes use gray background white paperboard. The packaging board of pastry boxes, fast food boxes and other directly imported food has no oil resistance, so the phenomenon of oil leakage is quite common after packaging oily food. In the future, we should develop and produce functional special cardboard for packaging solid food and liquid food according to the packaging of different foods. For example, cartons and paperboards for directly imported food such as cakes, paper cans and paperboards for light and moisture proof salt packaging, paper cans and paperboards for semi-finished food for steaming and baking processing, paper cans and paperboards for milk and fruit juice packaging, etc

develop composite paper bags to meet the requirements of bulk packaging

1 Small cement bags, i.e. 25kg-40kg cement bags, can be packed with two layers of paper instead of four layers of paper due to their light weight and less damage during handling. The quantity of cement bag paper can be changed from 80 g/m2 to 90 g/m2

2. Small grain packaging bags. With the reform of China's grain supply and marketing system, small grain packaging paper bags of 5, 10 and 20 kg are more suitable for the needs of consumers' daily life. It is suggested to produce small food (rice, rice, etc.) packaging bags with double kraft paper bags to replace the traditionally used cloth bags and plastic woven bags that are prone to insects, moisture absorption and mildew

the development of plant fiber fast food boxes has great prospects

with the enhancement of people's awareness of environmental protection and the actual needs of life, disposable paper fast food boxes and other food packaging products are popular. However, the cost of paper fast-food boxes is relatively high, so the PMI index of the domestic industry in October was 46%, and it is necessary to develop green plant fiber fast-food boxes with straw, wheat straw, bagasse, oak shell and other crop fibers as raw materials. The physical and chemical properties, appearance color and smell of the product should meet the specified indicators of China's hygienic standard for food packaging paper. The plant fiber fast-food box is competitive in price, and can raise fertile soil after degradation. It can also be used as livestock feed, and the resources can be fully utilized, which has good economic and social benefits

research and development of natural green packaging materials beautiful and practical

natural plant fibers (straw, wheat straw, cottonseed, bran shell, etc.) can be used as fast food boxes, but also can be rolled or woven into convenience bags. Some natural plant fibers are long and strong, making it easier to weave straw bags. Bamboo, natural shrubs, wickers, etc. can also be woven into baskets, baskets and other packaging containers or made into natural bamboo tubes to hold fruits, vegetables, tea, etc. bamboo plywood packaging boxes can be used for transportation packaging of machinery, electrical appliances and other equipment. Natural mineral materials such as clay and ceramics can be made into the packaging of wine, tea, etc. the rock particles can be expanded into perlite with light specific gravity. After adding a little adhesive, it can be molded into buffer packaging of different shapes

develop straw pulp based disposable tableware special cardboard

its main technical features are:

1 Based on domestic raw material resources and in view of the characteristics of straw pulp raw materials, the optimized application technology of chemical additives to improve the quality of straw pulp is adopted to ensure that straw pulp is close to the physical properties of wood pulp required for the manufacture of tableware paperboard

2. While improving the strength of straw pulp to reach the physical strength of wood pulp, it endows the pulp with various functions that should be possessed by making tableware paperboard

3. Adopt the treatment suitable for food packaging in the paperboard, so that the finished paperboard has the functions of hot water resistance, no leakage, no layering, oil resistance, heat sealing and so on. The economic and reasonable method is to produce paper tableware with native bleached straw pulp, and then recycle the waste tableware to produce non food packaging paper, so that fiber resources can be fully utilized without polluting the environment and increasing the pulping load. At the same time, it can further reduce the production cost of tableware paperboard and recycled paper, and alleviate the increasingly tense problem of pulp raw materials

development and application of honeycomb sandwich paperboard is good in quality and low in price

taking honeycomb sandwich paper as the main material, another reason for LSQ is that they carry out more strict monitoring on the quality control of incoming materials and finished products. There are three types of wood packaging boxes: I, II and III. LSQ type I is also called composite packing box. The outer layer of the box is made of fiberboard or plywood with strong puncture ability, the middle layer is made of honeycomb paper core, and the inner wall is made of straw cardboard. LSQ Ⅱ is a full honeycomb cardboard packing box. That is, honeycomb paper is used as the sandwich, and the inner and outer cartons are bonded. It is an ideal packaging for high-end fragile goods. LSQ Ⅲ lined packing box, with corrugated box as the box body, and honeycomb paperboard as the liner on the upper and lower walls of the box, has strong shock resistance, compression resistance, heat preservation and puncture resistance. The damage rate of fragile items in honeycomb paperboard packaging box is 50% - 90% lower than that of wooden box and corrugated box respectively after destructive drop, heavy stacking, real loading rolling and other experiments; Put a weight of 600kg on the empty box for pressure test for three months without deformation, and there is no need for polystyrene liner; The weight ratio with corrugated boxes of the same specification is 2:5, which can save 60% of paperboard; 28% lower than the price of wooden cases of the same specification

this new type of carton will be an ideal packaging for China's export commodities. Its popularization and application will play a positive role in reducing the damage rate of commodities in the circulation process and improving the quality of packaged products

development and application of pulp molding products waste utilization

pulp molding is a three-dimensional papermaking technology. It takes waste paper as raw material and molds paper products with a certain shape on a molding machine. It has four advantages: the raw material is waste paper, including board 1 Paper, carton paper, white edge paper, etc. 2. The production process is completed by pulping, adsorption molding, drying and finalization, which is harmless to the environment. 3. It can be recycled. 4. The volume is smaller than that of foamed plastic, which can be overlapped and convenient for transportation. In addition to being used as lunch boxes and tableware, pulp molding is more used as industrial buffer packaging, which is developing rapidly at present

source: China's packaging industry

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