Discussion on the development trend of paper packa

2022-08-18
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Discussion on the development trend of paper packaging materials

among the four pillar packaging materials of paper, plastic, metal and glass, paper products grow fastest and the price of paper is the cheapest. It can be recycled or used as plant fertilizer and purify the environment. So, how will paper packaging materials develop? Experts' views are as follows:

first, the high-quality and lightweight of packaging paper, paperboard and carton board

in order to make full use of natural resources and reduce the cost of mailing and transportation as much as possible, the production of low-volume paper, paperboard and packaging carton board 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. High quality, light weight and variety diversification should also be achieved in products such as packaging paper and paperboard. In particular, 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 original product quality according to the large demand for high-grade packaging boxes in the domestic market, that is, a variety of 100g/m2 should be added to the corrugated base paper, and two varieties of 21g/m2 and 200g/m2 should be added to the kraft board

II. Research and development of functional special paperboard for food packaging

China's current whiteboard has a single variety, which is not classified to distinguish different packages, and there is no special food packaging paperboard produced for the needs of 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, and a variety of food boxes use gray background white paperboard. The oil leakage phenomenon is quite common after the oil-containing food is packaged on the packaging board of cake boxes, fast food boxes and other directly imported food, because it does not have oil resistance. In the future, we should develop and produce functional special cardboard for packaging different foods, such as cartons for directly imported foods such as cakes, cartons for semi-finished foods for steaming and baking, cartons for milk, fruit juice, etc

III. develop composite paper bags

1. Small cement bags, namely 25 ~ 40kg cement bags, can be changed from the current four layer paper bags to two-layer paper packaging because of their light weight and less damage during handling. The quantitative quantity of cement bag paper is changed from the current 80g/m2 to 90 ~ 100/M2

2. Small grain packaging bags. With the reform of China's grain supply and marketing system, 5kg, 10kg, 20kg grain packaging paper bags are more suitable for consumers' daily needs. 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

IV. development of plant fiber fast food boxes

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 high, so it is very necessary to develop fast-food boxes using straw, wheat straw, bagasse, bran shell and other crop fibers as raw materials. These products are competitive in price. After degradation, they can raise fertile soil when the a/d converter operates at the "maximum output data rate of 4kHz", and can also be collected as livestock feed. Resources are fully utilized, with good economic and social benefits

v. research and development of natural green packaging materials

natural plant fibers (straw, wheat straw, cotton straw, 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, which is easier to be woven into straw bags. Bamboo, natural shrubs, willow, etc. can also be woven into baskets, baskets and other packaging containers or made into natural bamboo tubes to contain fruits, vegetables, tea, etc, Bamboo plywood packing box can be used for transportation and 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 made into buffer packaging of different shapes

VI. develop disposable tableware special paperboard based on straw pulp

its main technical features are: 1. Based on China's raw material resources, aiming at the shortcomings of straw pulp raw materials, adopt the optimized application technology of chemical additives to improve the quality of straw pulp, so as to ensure that its performance is close to the physical properties of wood pulp. 2. Carry out the treatment suitable for the machine loading of foam particles for food packaging on the surface of the paperboard, so that StarTech shares five important factors that affect the performance, accuracy and service life of the electronic tensile testing machine: the finished paperboard has the functions of hot water resistance, no leakage, no layering, oil resistance and heat sealing. 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 as to make full use of fiber resources without polluting the environment and increasing the pulping load. At the same time, it can further reduce the production cost of tableware paperboard and recycling, bring confidence to extruder enterprises, and alleviate the increasingly tense problem of pulp raw materials

VII. Development and application of honeycomb sandwich paperboard

with honeycomb sandwich paper as the main material, there are three types of LSQ substitute wood packaging boxes: I, II and III. Lsqi type is also called composite packing box. The outer layer of the box is made of fiberboard or plywood with strong puncture resistance, the middle layer is made of honeycomb paper core, and the inner wall is made of straw cardboard; LSQ II is a full honeycomb paperboard packaging box, which is made of honeycomb paper as the sandwich and bonded with paperboard inside and outside. 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% - 97% lower than that of wooden box and corrugated box respectively after destructive drop, heavy stacking, real loading rolling and other experiments; Put a 600kg weight 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 become 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

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