The hottest packaging industry implements full pap

2022-08-23
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The packaging industry implements full paper packaging to reduce white pollution

with the national attention to white pollution, using environmental friendly materials instead of foamed plastics as cushioning packaging materials has become a development trend, and full paper packaging has also become a new favorite of modern packaging to avoid trade barriers. In recent years, the structural development of paper packaging materials has developed rapidly. The structure of cushioning materials has also changed from single type to complex type, from process type to functional type. Taking paper honeycomb materials, corrugated board and pulp molded products as examples, this paper analyzes the structural development of cushioning paper materials

paper honeycomb material

paper honeycomb is famous for its light weight, environmental protection, sound insulation, shock resistance and high cost performance. It is mainly used to cushion the impact or vibration of products during transportation or loading and unloading. The structural forms of paper honeycomb mainly include hexagonal, rectangular, prismatic, corrugated, square, sparsely arranged circle and closely arranged circle, including the study of structural stress and interface stress caused by moisture infiltration, dispersion and uneven moisture content by constitutive or numerical simulation methods; On the other hand, the effects of humidity and temperature on the physical properties of plastics are studied, such as shapes, triangles, etc. The traditional paper honeycomb structure is hexagonal. It is pasted by multi-layer paper staggered, dried, cut into pieces, and then pulled apart to form a hexagonal structure. Hexagonal paper honeycomb is a labor-intensive product, which is not suitable for fully automated production

3d folded paper honeycomb core adopts new packaging machinery technology, which can be produced at high speed, and its production cost is lower than that of traditional paper honeycomb core. The main feature of 3D folded paper honeycomb cores is that they can absorb a lot of energy compared with the current honeycomb structure in terms of damage prevention and earthquake resistance. In addition, 3D folding core can reduce its cost. Because 3D folded paper honeycomb can rotate, wind and bend, it can be easily used to process any packaging products. The packaging made of 3D folded paper honeycomb is relatively small, light and has a better effect of protecting products. Irregular fragile products can be wrapped with 3D folded paper honeycomb and placed in other packaging containers. Using the new paper folding technology can make the packaging without printing, and the company logo can be made by using this folding technology. 3D folding paper honeycomb can not only promote sales, but also protect products from impact and vibration

corrugated cardboard

in order to replace foamed plastics, people have used corrugated cardboard structure to develop a variety of corrugated cardboard combined cushioning packaging materials. In 1996, kimdowook and kimkijeong developed double ply reinforced corrugated board on the basis of our high-quality production and high standard service for the original corrugated board, which changed the interlayer in the original three-layer corrugated board into two-layer corrugated board, and increased the compression strength of corrugated board on the basis of basically not adding the thickness of corrugated board

it is understood that researchers have carried out four point bending experiments on five different structural forms of corrugated board, and the results show that the corrugated board with new structure has better structural advantages compared with the traditional corrugated board. Folding corrugated composites have high load-bearing performance and large static buffer energy absorption. They are more suitable for cushioning packaging of products with heavy weight and hard surface

the bearing capacity of corrugated, honeycomb and corrugated composites largely depends on the mechanical properties of honeycomb sandwich. Corrugated, honeycomb and corrugated composites greatly increase the thickness of composites with few materials, and their buffer and energy absorption efficiency is higher than that of simple corrugated stacking

pulp molded products

pulp molded products are mainly used in the inner packaging of industrial products, such as egg trays, fresh fruit trays, food and semi-finished product packaging, medical appliance packaging, etc. Pulp molded products are generally processed with multiple sets of molds. With the improvement of mold technology, cavity pulp molded products can be produced at present. Most of these pulp molded products are used as containers or decorations by experimental machines with accuracy of 5.0.5 and 1. The combined processing form is to realize the packaging function required by a certain application by combining multiple pulp molds with different shapes during molding. In foreign countries, disposable pulp molded urinals have replaced the multiple use urinals made of polyester materials. With the improvement of mold technology, the structure of pulp molded products tends to be more and more complex and meticulous

in addition to the traditional honeycomb paperboard, corrugated paperboard and pulp model products, foamed paper particles that meet the needs of environmental protection are also gradually developed and applied to the cushioning of electronic products. A company in Hamburg, Germany, chopped the waste paper and mixed it with starch, made the slurry into particles, put it into a sealed container, and applied high-pressure and high-temperature steam. Then many Japanese enterprises rapidly reduced the pressure, and the particle packaging became foam, forming porous pellets into foam packaging materials, which can be used as cushioning materials. The cushioning performance is better than EPS, and is suitable for cushioning packaging of electronics, instruments and sensitive materials

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