subject: Enhance the strength of cardboard to fit user needs - boxes, packaging - Paper industry [print this page] Enhance the strength of cardboard to fit user needs - boxes, packaging - Paper industry
With the increasing volume of commodity circulation market, storage capacity is becoming more prominent tension. To ease the storage capacity of the space, enhance the stacking height.
Packaging products in all, the vast majority is Corrugated paper Boxes to transport, which shows the corrugated cardboard shipping boxes from the factory for ensuring safety of products delivered to customers in the hands of the important role of stacking layers in the storage and transport in the upgrading of the Carton Compressive strength requirements will be more and more, if the underlying Carton Once Crush collapse would cause serious damage. According to food industry estimates, the annual damage to the goods in about 20% is due to problems caused by packaging. Therefore, improving the compression strength of cartons into the user's general requirements.
The past, methods to increase the compressive strength cartons generally increased fiber, or a thick paper mount and the core, or a multilayer structure. However, these methods have increased the economic costs, not only increase the cost of the system box, and increase the weight of the box, and transport and storage accounted for more places, but also increase the cost of transport.
With the emergence of high-performance corrugated board, carton suppliers which produces an enhanced system of carton boxes and reducing paper layer needed to carry out the various methods of the experiment, these processing methods can increase the strength of cartons.
Crosslinking?? To change the fiber orientation
Crosslinking is the Papermaking The process of changing the fiber direction of processing methods. Paper fiber is usually parallel to the longitudinal direction of this case, after forming the horizontal direction around the fiber around the box, which is caused by pressure against the worst carton direction. Cross-linking is so much fiber and 90 degrees to the machine direction, processing result is that many fibers and under the box next to the vertical direction, so that fibers can be increased without increasing the intensity of the carton stack.
Measuring a mount in the intensity of cross-linked when it is measured by the ability to withstand pressure failure ring. To one and a half inches wide 6 inches long Cardboard Be turned into ring for compression, the number of pounds required for the destruction it is the ring crush strength of the material. High ring crush strength of the mount with high ring crush strength of the core paper, not only increases the vertical side of the small carton compression capabilities, but also increased the compressive strength of the carton.
Pressure?? Tightly compressed cardboard High-pressure cardboard forming method is also an increase in the papermaking process cardboard intensity method. The expansion of paper fibers on the use of pressure points closely compressed cardboard. The cardboard structure more closely, the intensity will be. Also help from the high-pressure cardboard forming Pulp Squeeze more water, but the key is to more closely cardboard made to improve the compressive strength.
Additives?? Increase the fiber adhesion This is paper in the paper before and after adding various chemicals to the fiber grain, used to increase fiber bonding strength, thereby enhancing the compressive strength of corrugated boxes. These additives include such as maize, starch, glue, adhesives, and heavy metals, and plastics and urea (a) formaldehyde resin. Sometimes, the outer carton mining methods spraying chemicals to enhance fiber board.
General, compared with chemical additives, crosslinking or other methods to lower costs, but when their use is greater than the cost of paper used to increase the weight of floor and core methods, more solid cartons made time, they no sense.
LAMINATED?? Duplex board increased degree of
The enhanced strength of corrugated containers is based on two or more layers; core laminated paper based on. Adhesive can be a simple corn starch adhesive, super-strength core to produce a paper to the folder in the cross-linked, forming pressure, or the middle of conventional strength of paper.
Pair maintained a single corrugated box corrugated structure, it plays the role of corrugated box, corrugated box alone weight than about 10%, but the resulting compressive strength significantly increased by 10%.
Dual-core boxes also have a greater ring crush strength, while increasing the compressive strength of the carton, in the Tray Stacking heights of three or more played an important role.
High-performance materials and corrugated cardboard containers the latest developments in various industries to meet the needs of users, but people still expect, with the growing development of modern high technology to continuously improve the compressive strength of corrugated boxes in order to reduce in the circulation of commodities due to packaging damage and economic losses.
