[Chinese Packaging Network News] In the paper, plastic, metal, glass four pillars of packaging materials, paper products, the fastest growth, the cheapest paper price, can be recycled or used as plant fertilizers, but also to purify the environment. So, how will paper packaging materials develop?
Quality and lightweight of packaging paper, cardboard and linerboard
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 the high demand for high-grade packaging box, should be appropriately increased 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.
Development of functional specialty 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 cardboard for packaging different foods, such as carton board for directly imported food such as packaged confectionery, paperboard board for semi-finished foods packaged for steaming, and paperboard packaging for packaging milk and fruit juice. Wait.
Develop composite paper bags
Small cement bags, that is, 25-40kg cement bags, due to light weight, less damage when handling, can be changed from the current four-layer paper bag to two-layer paper packaging, cement bag paper quantification from the current 80g/m2, to 90g- 100g/m2.
Small grain packaging bags, along with the reform of China's grain supply and marketing system, small packaged 5kg, 10kg, 20kg grain packaging paper bags are more suitable for consumers' daily needs. It is recommended that small bags of food (rice, rice, etc.) are to be produced in double kraft paper bags instead of custom-made cloth bags and plastic woven bags that are easy to infest and attract moisture.
Development of vegetable fiber snack boxes
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 the development of snack boxes made from crop fibers such as rice straw, wheat straw, bagasse, and clam shells. 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.
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 expanded into lighter-weight perlite. After adding a small amount of binder, buffers of different shapes can be produced.
Development of special disposable cardboard for straw pulp
Its main technical characteristics are: 1. Based on our country's raw material resources, we use the chemical additives that improve the quality of the straw pulp to optimize the application technology for the shortcomings of the straw pulp raw material to ensure that its performance is close to the physical properties of the wood pulp. 2. The paperboard surface is suitable for the food packaging treatment, so that the finished paperboard has the functions of anti-hot water, no leakage, no delamination, oil resistance and heat sealing. 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 outer layer of the box is made of fiberboard or plywood with strong anti-jamming ability, honeycomb paper core in the middle layer, and the inner wall is glued with straw board; the LSQII type is a full-honey cardboard box, that is, the honeycomb paper is used as the sandwich core, and the interior and exterior are glued with cardboard. It is an ideal packaging for high-end fragile goods; LSQIII lining type packaging box uses corrugated carton as the box, and the upper and lower walls of the box are lined with honeycomb paperboard, which has strong shockproof, compressive, thermal 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; 600kg weights have been placed on empty boxes to test pressure. Three months without deformation, and no polystyrene liner; Corrugated paper 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.
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 edge paper, etc.; 2. The production process is completed by pulping, adsorption molding, drying and shaping, and 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 lunch boxes and cutlery, pulp molding is more used as industrial buffer packaging and is currently developing rapidly.
