Packaging paper replaces wood in the most popular

Foreign developed countries are in a hurry to replace wood with paper

the heavy-duty packaging of replacing wood with paper in developed countries includes the use of high-strength multi-layer (double arch) corrugated boxes (box part), non wood product pallets (table part), reinforced structural materials for edges, corners, bottoms and tops, and used as spacers. Most of them are the gradual increase of friction between force measuring cylinders and force measuring pistons, cushioning, positioning, protection of padding, filling The application of non lignified materials such as auxiliary materials (combined filling parts) has entered the stage of commercial application as early as the mid-1980s. But until now, they still use a certain amount of fumigated wooden boxes and packing boxes made of processed wood products such as plywood. Its technology and equipment are of high level

small and medium-sized wood substitute cartons generally use three corrugated boards (generally seven layers), which can be made into heavy-duty packaging boxes through automatic production lines, and are fixedly connected with wooden pallets at the bottom of the box (in recent years, paper pallets and non whole wood composite pallets have been gradually used). As early as the 1950s, the United States had a patent for the structure of combined heavy-duty cartons and the use of octagonal clip pads and large square head self tightening screws to fix the bottom of the box and the seat (tray). In the early 1980s, Japan introduced special packing cases, which can pack special heavy goods, castings, mechanical and electrical products, etc. As for the overweight large substitute wood packaging, the composite or combined structure of super strong multi-layer corrugated board is adopted. For example, rexa M company of the United States uses two three tile seven layer corrugated cardboard to stick together to make and form a 14 layer overweight corrugated cardboard box according to the requirements of a well-known domestic construction machinery manufacturer, which can bear large Ford Trucks with a load of more than 7.5 tons

in 1998, the total output of corrugated board in the United States reached 40.33 billion square meters, with a total sales value of 19.5% US $300 million, of which 0.5% - 0 6% is corrugated board with three tiles and more than seven layers, with an output of 222million square meters. This figure itself shows that there are not a few, but a considerable number of American carton factories making heavy paper packaging boxes. The production speed of its seven layer line is as high as 155 meters/minute, and it operates automatically

in heavy-duty packaging cartons, some are made into angular prism shapes, and some are first made into octagonal shallow plate-shaped bottom and cover, and then use adhesive structure to form heavy-duty packaging containers. This avoids the fracture of multi-layer ultra thick paperboard when the pressing line is folded into a box to form a right angle. This large container carton in Japan can contain plastic granular materials weighing up to 3.45 tons (the size of the carton, diameter of 2.5 meters, height of 2.3 meters). 2016

there is also super rigid high-strength multilayer corrugated board with staggered bonding in the vertical direction of corrugated, which overcomes the differences in the direction of comprehensive strength indicators and has the advantages of mutual strength complementarity. It is used to make the bottom plate of heavy packing cases or pallets

honeycomb paperboard is very practical as a liner and separator in heavy-duty packaging boxes, as a load-bearing wallboard material bonded with the inner wall of the box, and as a full paper pallet. There is a certain market for honeycomb paperboard all paper pallets with waterproof treatment and protective packaging materials with cushioning performance used as corners and bottoms of boxes produced by Tenneco and ixca LIBOR pallet group. In foreign countries, it is rare for honeycomb paperboard to be made into packaging cartons. Israel uses mm thick honeycomb paperboard to make packaging boxes for cigarettes, jade and porcelain. Its packaging equipment and process are the same as that of corrugated boxes. The processing of thick honeycomb paperboard into boxes is not so easy. Like the production of honeycomb paperboard, some links are not easy to be connected into automatic lines, and high-speed production cannot be carried out. This is obviously not suitable for "low profit" carton enterprises

nevertheless, the speed, performance and product quality of foreign honeycomb paperboard production lines are still higher than those of domestic equipment in China, so the price is very high. The honeycomb paperboard production line of Israel IH engineering company sells for 1.1 million US dollars; The asking price of American 0ms company is 1.2 million US dollars; Dutch hollyson company offers 20million yuan. Other foreign companies also have such production lines available, such as honeycomb paper technology companies in Japan, Britain, Finland and the United States

modern wood pallets include honeycomb cardboard pallets, pulp molding pallets, paper filling pallets, plastic pallets, metal pallets, etc., which have a history of more than 20 years abroad. Therefore, there are production lines of various pallets (also known as seats or pallets) for the market to choose from

metal corner guards, box mouth clips, fixed accessories and hardware for box bottom and tray used for box reinforcement of heavy paperboard have not only been developed abroad, but also been improved for many times, with a application history of 30 to 40 years. Octagonal clip gaskets and large square head self tightening screws patented by the United States in the 1950s are still used in some places