The hottest way to enhance the strength of corruga

Methods to enhance the strength of corrugated boxes

due to the rising house prices and limited land, the failure of the plan to expand the warehouse means that every inch of space in the existing warehouse must be fully utilized. In this way, the solution of one is to pile higher

stacking up is a test of the compressive strength of cartons. It is easy to cause small piston damage and oil leakage. When the box below collapses, the tray products are damaged and the bottles are broken. If the juice bottle is used, the warehouse floor will be full of sticky juice, with broken glass bottles and wet corrugated boxes

this shows the increasingly important role of corrugated cardboard transport boxes in ensuring the safe delivery of products from factories to customers. According to the information provided by the relevant departments of corrugated boxes, the vast majority of all packaged products are transported in corrugated boxes, and the role of transportation cartons in protecting products from damage in the whole distribution process should not be underestimated. The food industry in China generates 40.06 billion express deliveries. The industry estimates that about one fifth of the value of goods damaged each year is due to packaging problems

under today's economic conditions, the latest developments in high-performance corrugated board materials and containers meet the needs of packaging plants in all walks of life. The transportation box is getting higher and higher in the warehouse. Cartons full of products from the northern plant under low humidity conditions; Transported to the southern distribution center with high humidity. Under this changing condition, the storage time is relatively long, so the packaging box is under a lot of pressure from the weight and the surrounding environment. The key element of providing high-performance corrugated boxes is to enhance the compressive strength of single corrugated boxes from top to bottom

before the advent of high-performance corrugated boxes, the only way to increase the compressive strength of cartons was to add fibers, or use thick liner and core paper, or use multi-layer structure. However, these methods have increased economic expenditure, which not only makes the box more expensive, but also increases the weight of the box and takes up more space in transportation and storage. However, less products are stored in the same space, and the transportation weight is increased

after the advent of high-performance corrugated board, carton suppliers have experimented with different methods that can not only manufacture reinforced but also reduce the paper layer required for cartoning. Each processing method gives cartons certain reinforcement

crosslinking is a processing method that changes the direction of fibers in the papermaking process. Usually, the paper fibers run in parallel in the longitudinal direction, which makes the fiber horizontal around the box after the box is formed. This is the worst way to cause the compressive strength of the top to bottom of the carton. It is found that the position causing the failure is horizontal

crosslinking makes many fibers run 90 degrees with the direction of the machine, and the processing result is that many fibers run vertically up and down the edge of the box, which does not increase the fiber and increases the stacking strength of the carton. Promote the transformation and upgrading of equipment

measuring the strength of a piece of lining paper when it is crosslinked is to measure its ability to withstand the damage of annular pressure. Bend a half inch wide and six inch long cardboard strip into a ring. The number of pounds needed to press and destroy it is the ring compression strength of the material. The liner paper with high ring compression strength plus the core paper with high ring compression strength not only increases the compression resistance of the vertical edge of the carton, but also increases the compression strength of the whole carton

high pressure sheet forming is another method to enhance the strength of paperboard in the papermaking process. Basically, the cardboard is compressed tightly by expanding the force on the paper fiber. The tighter the paper, the stronger it will be. Hydroforming also helps to squeeze more water from the pulp, but the key is to make saltier and tighter cardboard

the third way to enhance the compressive strength of corrugated boxes is to add various chemicals to the fibers before and after papermaking. These additives are used to improve the binding strength of fibers. They include corn, starch, glue, adhesives and heavy metal moon, as well as plastics and urea (formaldehyde) resins. Sometimes, the method of spraying the outer layer of the carton with chemicals is also used to strengthen the fiber paperboard

generally speaking, using chemical additives costs less than cross-linking or other methods, but when their use cost is greater than that of cartons made by increasing the weight of base plate and glossy paper, they are meaningless

the fourth method to create high-performance corrugated boxes is based on the lamination of two or more layers of core paper

laminating agent can be a simple King rice starch adhesive, which produces a super core paper to be sandwiched between cross-linked, pressurized or conventional strength paper

the double corrugated box maintains the thin single corrugated structure, but it plays the role of corrugated paper, which is more than 10% heavier than the single corrugated box. However, the generated resistance exceeds 10% of the measured pressure, and the double core carton also has greater ring pressure strength. At the same time, the compressive strength of the carton is added, which plays an important role in the stacking of pallets at more than three heights

we can expect high-performance corrugated boxes to move forward by 10% higher than the corrugated boxes used before

the performance is 10% higher than the corrugated box previously used

(author/Zhu Wen)

"Shanghai packaging"