The article comes from the Sohu news 2017.12.15

In the four pillar packaging materials of paper, plastic, metal and glass, paper products grow the fastest and the price of paper is the cheapest, which can be recycled, reused or used as plant fertilizers, and also can purify the environment. So, how will the development of paper packaging materials? The expert views are as follows:

1. The quality and light weight of paper, cardboard and cardboard

In order to make full use of natural resources and reduce the cost of postage and transportation, it is the development trend of paper products in the world to produce various kinds of paper, cardboard and packaging board. China has put forward low quantitative problems in newsprint, letterpress, offset printing paper, paper bag and so on, and has already begun to solve it. In the packaging paper and cardboard and other products, we should also achieve high quality and lightweight and variety.
Especially the amount of corrugating medium and linerboard maximum, according to the high demand in the domestic market of high-grade packaging box, should increase 3 low quantitative products in the premise of properly improving the quality of the original products, namely the corrugating medium added 100g / m2 a variety, kraft paper added 21g / m2, 200g / m2 two varieties.

2, research and development of functional special cardboard for food packaging

China's current whiteboard varieties are single, and they are not classified for different packages, but also have no special food packaging boards for different food needs. Although there are regulations on raw materials and hygienic indexes of food packaging paper, there are no paperboard varieties specially used for food packaging, and many kinds of food boxes are made of gray bottom white board. After the packing of oil - containing food, the phenomenon of oil permeation is quite common because of the non - oil resistance and the packaging of oil - containing food.
In the future, we should develop and produce functional special cardboard for packaging different foods, such as packaging pastry and other carton and cardboard boxes with direct access to food, such as paper, cardboard, milk, fruit juice and so on.

3. Develop a composite paper bag

3.1, the small cement bag is 25 to 40kg cement bag, because of light weight and less damage during transportation, it can be changed from the four layer of paper bag to the two layer of paper packaging. The cement bag paper's quantity is changed from the current 80g / m2 to 90~100 / m2.

3.2, small grain packaging bags, with the reform of China's grain supply and marketing system, small package 5kg, 10kg and 20kg grain packaging paper bags are more suitable for consumers' daily life needs. It is suggested to produce double skin bags of small food (rice, rice, etc.) packaging bags instead of used bags, and easy to produce worms and damp mouldy plastic woven bags.

4, the development of plant fiber fast food box

With the enhancement of people's awareness of environmental protection and the actual needs of life, the disposable paper fast food boxes and other food packaging products are popular. But the cost of paper fast food boxes is high, so it is very necessary to develop fast food boxes with rice straw, wheat straw, bagasse, bran shell and other crops fiber. The products are competitive in price, and can be used to raise fertile soil after being used and degraded. They can also be used as animal feed, and their resources are fully utilized, which has good economic and social benefits.

5. research and development of natural green packaging materials

The natural plant fiber (rice straw, wheat straw, cotton stalk, bran shell etc.) can be used in addition to fast food box, can also be made of fiber after rolling or knitting, convenient bags, some natural plant fiber is woven into strong, herbaceous bag easily, shrubs, bamboo, natural wicker also can be woven into baskets, basket etc. the packaging container or made of natural bamboo bloom, fruit, vegetables and tea, bamboo packing box can be used for machinery and equipment of transport packaging. Natural mineral materials, such as clay and ceramics, can be made into wine, tea and other packaging. Rock particles are expanded into lightweight pearlite. After adding a little adhesive, they can be made into cushioning packages of different shapes.

6. Development of disposable cardboard for disposable tableware based on straw pulp
The main technical features are:

6.1, based on China's raw material resources, aiming at the shortcomings of straw pulp materials, we should optimize the application technology of chemical auxiliaries to improve the quality of straw pulp, so as to ensure its performance is close to the physical properties of wood pulp.

6.2. It is suitable for the treatment of food packaging on the surface of the cardboard, so that the finished paperboard has the functions of anti hot water, non leakage, non stratification, oil resistance and heat sealing. The economic and reasonable way is to produce paper tableware from raw bleached straw pulp, then recycle the waste utensils, and 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, the production cost of the cardboard and recycled paper can be further reduced, and the problem of the increasingly tense raw material of pulp can be relieved.

7. Development and application of honeycomb sandwich board

With honeycomb sandwich paper as the main material, the LSQ generation of wood packing box has three types: I, II, and III.

The LSQI type is also called the composite packing box. A fiber plate box outer use anti puncture capability or three ply middle grass cardboard wall honeycomb paper core, LSQ; type II for the honeycomb cardboard packing box, with the honeycomb paper as the core, inside and outside the box board bonding, is ideal for high-end packaging fragile goods; LSQ type lining packing box, the carton box as a box, on the walls with honeycomb cardboard pad, a strong earthquake, compressive strength, thermal insulation, anti puncture capability.

Honeycomb paperboard packing box by destructive weight drop, stacking and rolling equipment installed in the experiment, the fragile breakage rate than wooden boxes, corrugated boxes were reduced from 50% to 97%; the weight of empty containers placed on the 600kg test is not the deformation of three months, and without the same size and polystyrene liner;