The development direction of paper packaging materials
Among the four pillars of paper, plastic, metal, and glass, paper products have the fastest growth, and the price of paper is the cheapest. They can either be recycled or used as plant fertilizers, and they can also purify the environment. Then, how will the paper packaging materials develop? The expert’s opinion is as follows:
First, packaging paper, cardboard and cardboard paper quality and lightweight
In order to make full use of natural resources and reduce mailing and transportation costs as much as possible, the production of low-quantity paper, board, and carton board is the trend of paper products in the world. China has proposed low-quantity issues in newsprint, letterpress, offset printing, and paper-bag papers, and has already begun to address it. In the packaging of paper and cardboard and other products should also achieve high quality and lightweight and variety of species. In particular, the largest amount of corrugated base paper and kraft linerboard, according to the domestic market for large-scale high-end packaging box needs, should be appropriate to improve the quality of the original product under the premise of adding three low-quantity products, that corrugated paper added 100g/m2 One species, kraft paperboard added 21g/m2, 200g/m2 two varieties.
Second, the development of functional packaging special cardboard for food packaging
China's current whiteboard type is single, there is no classification for different types of packaging, and there is no special food packaging board for different food needs. Although there are provisions for raw materials and health indicators for food packaging paper in China, there are no cardboard types that are specifically used for food packaging, and a variety of food boxes use gray-white paper. Packaging paperboards for direct-entry foodstuffs, such as cake boxes and fast food boxes, have no oil-resistance. After oil-packed foods are packaged, oil seepage is quite common. In the future, we should develop and produce functional special paperboards for packaging different foods, such as cartonboards for directly imported foods such as packaged confectionery, paperboard boardboards for semifinished foods packaged for steaming, and paperboardboards for packaging milk, fruit juices, etc. Wait.
Third, the development of composite paper bags
1. Small cement bags are cement bags of 25 to 40kg. Because of their light weight, they are less damaged during handling. They can be changed from the current four-layer paper bag to two-layer paper. The cement bag paper is quantified from the current 80g/m2. 90 ~ 100 / m2. 2, small grain bags, with the reform of China's grain supply and marketing system, small package 5kg, 10kg, 20kg grain packaging paper bags are more suitable for the needs of consumers in daily life. It is advisable to produce small bags of food (rice, rice, etc.) in double kraft paper bags instead of custom-made cloth bags and plastic woven bags that are easy to infest and attract moisture.
Fourth, the development of plant fiber snack box
With the increasing awareness of environmental protection and the practical needs of people, disposable food cartons and other food packaging products are popular. However, the cost of paper-based fast food boxes is high. Therefore, there is a great need for research and development of fast food boxes using crop fibers such as rice straw, wheat straw, bagasse, and clams as raw materials. Such products are competitive in price, can be used and decomposed to fertilize fertile land, and can also be used as animal feed for collection. Resources are fully utilized and have good economic and social benefits.
V. Research and development of natural green packaging materials
Natural plant fibers (straw, wheat straw, cotton stalks, oyster shells, etc.) can be used as fast food boxes, but they can also be rolled or woven into convenient bags. Some natural plant fibers are long and strong, and they can be easily woven into grassy materials. Bags, bamboo, natural shrubs, wicker, etc. can be woven into baskets, bowls or other packaging containers or made into natural bamboo tubes, containing fruits, vegetables, tea, etc. Bamboo plastic sheet packaging boxes can be used for transport packaging of machinery, electrical appliances and other equipment. Natural mineral materials such as clays and ceramics can be packaged into alcoholic beverages, tea leaves, etc. The rock particles are puffed to produce a lighter weight perlite. After adding a small amount of binder, buffer packs of different shapes can be made.
6. Development of disposable cardboard for straw-based disposable tableware
Its main technical characteristics are as follows: 1. Based on our country's raw material resources, we use the chemical additives that improve the quality of straw pulp to optimize the application technology to overcome the shortcomings of straw pulp raw materials to ensure that its performance is close to the physical properties of wood pulp. 2, on the surface of the cardboard is suitable for food packaging processing, so that the finished cardboard has anti-hot water, no leakage, no delamination, anti-oil and heat sealing and other functions. An economical and reasonable method is to use raw bleached straw to produce paper cutlery, and then recycle the waste cutlery to produce non-food packaging paper, so as to make full use of fiber resources without polluting the environment and increasing pulping load. At the same time, it can further reduce the production cost of cutlery board and recycled paper, and alleviate the increasingly tense problem of pulp raw materials.
Development and application of honeycomb sandwich board
The honeycomb sandwich paper is the main material, LSQ generation wooden packing box has I, II, III three types.
LSQI type is also called composite material packing box. The exterior of the box is made of fibreboard or plywood with strong anti-jamming ability, honeycomb paper core in the middle layer and grassboard in the inner wall; LSQII type is a full-honeycomb cardboard packaging box, in which the honeycomb paper is used as the core and the interior and exterior are made of cardboard. Bonded, it is the ideal packaging for high-end fragile goods; LSQIII type liner box, corrugated box as the box, the upper and lower walls of the box with honeycomb paperboard liner, a strong shock, compression, Insulation, anti-jamming ability. Honeycomb cardboard packaging box has undergone destructive drop, heavy weight stacking, and actual loading rolling experiments. The damage rate of built-in fragile items has been reduced by 50% to 97% compared with wooden boxes and corrugated boxes; 600 kg of heavy goods have been placed on empty boxes to test pressure. Three months without deformation, and no polystyrene liner; Corrugated box with the same size ratio of 2:5, can save 60% of cardboard; 28% lower than the same size wooden box price. This new type of carton will become an ideal package for China's export commodities. Its popularization and application will play a positive role in reducing the rate of breakage of goods in circulation and improving the quality of packaged products.
VIII. Development and Application of Pulp Molded Products
Pulp molding is a three-dimensional papermaking technique. It uses waste paper as a raw material and molds a certain shape of paper products on a molding machine. It has four major advantages: 1. The raw materials are waste paper, including board paper, carton paper, white paper, etc.; 2. The production process is completed by pulping, adsorption molding, and drying. It is harmless to the environment; 3. It can be recycled and recycled. Use; 4, smaller than foam plastic, can be overlapped, convenient transportation. In addition to making food boxes and cutlery, pulp moulding is more used as industrial buffer packaging and is currently developing rapidly.