Due to the various advantages and disadvantages of the above-mentioned honeycomb paperboard. Honeycomb paperboard is often used to make delicate containers, meters, large appliances, motorcycles, bicycles, and fruit products.
Corrugated cardboard is another type of packaging material known to everyone. There are many similarities between honeycomb paperboard and corrugated paperboard, and there are many different places.
First, honeycomb paperboard and corrugated paperboard are structurally different. Honeycomb paperboard is thick and thin, and it is made of honeycomb paper core and two-layer paperboard glued together by adhesive. It belongs to a kind of three-layer composite paperboard. The thickness of the honeycomb paperboard is determined by the height of the honeycomb core paper. And, it can achieve the purpose of adjusting the thickness of the honeycomb paperboard by appropriately changing the height of the honeycomb core. The corrugated board has different types such as single-sided, three-layered, and five-layered. The number of core papers and panels required for different types of corrugated board is different. The same thickness of honeycomb paperboard saves the base paper needed for corrugated board. Moreover, the direction of the thickness of the honeycomb paperboard is the longitudinal direction of the honeycomb base paper, and the longitudinal compression strength and side pressure strength of the base paper are higher than those of the lateral direction. For corrugated board, the thickness direction of the corrugated board is the horizontal direction of the corrugated medium. So it is not as good as honeycomb paperboard in terms of ring pressure strength and side pressure strength.
Second, honeycomb paperboard and corrugated paperboard have different requirements for base paper. In general, honeycomb paperboard has higher requirements for water resistance, tear resistance, tear strength and flexibility of the base paper. Moreover, the paperboard manufacturing technology of honeycomb paperboard is relatively difficult.
Finally, there are major differences in the application performance of honeycomb paperboard and corrugated cardboard. Compared with corrugated paperboard, the honeycomb paperboard has the characteristics of light weight, strong compressive and folding resistance and so on. The same thickness of honeycomb paperboard is only about 70% of the same area of ​​corrugated cardboard. The special structure of the honeycomb paperboard makes it twice as flat as the corrugated cardboard with the same thickness. However, honeycomb paperboard is more expensive than corrugated paperboard. Although honeycomb paperboard saves material compared to corrugated paperboard, its requirements for base paper are relatively high, so the production cost is relatively high. Moreover, the manufacture of honeycomb paperboard is relatively difficult, so its comprehensive cost is relatively high. Furthermore, the emergence and development of corrugated board is relatively long, and the appearance of honeycomb paperboard is relatively late. Therefore, it is not as good as corrugated board in manufacturing technology and production equipment. It still has many technical deficiencies and it needs further improvement.
The appearance of honeycomb paperboard is not very long, so it has some problems in the production process. In general there are the following points.
First, due to improper quality and amount of adhesive, or poor bonding due to high drying temperature and other reasons such as the embrittlement of the adhesive layer, the upper and lower layers of paper are opened on a large area. This can be overcome by adjusting the formulation and type of adhesive, or by adjusting the drying process.
Second, due to too little glue on the glue layer or the new height deviation is too high, the pressure roller operation is poor and other reasons will cause the bottom of the cardboard adhesiveness is good, but when the tissue is torn by hand, there is a large area of ​​open glue phenomenon . The situation can be improved by detecting the operation of the upper gluing layer device, properly adjusting the paper feeding device of the core paper, and checking the height deviation of the honeycomb core layer.
Third, when the honeycomb paperboard is bent, the upper layer breaks, and the lower layer refers to the phenomenon of large area disintegrating. It can be adjusted by adjusting the formulation and type of the adhesive and appropriately lowering the drying temperature of the honeycomb paperboard.
Fourth, due to the poor quality of the core strip glue, the bottom of the peel strength, the improper draw ratio, or the improper process, the honeycomb core layer has more holes in the manufacturing process, and breakage occurs during stretching. Choosing a better base paper and adjusting its stretching process, preferably a core strip adhesive with a high peel strength can improve this situation.
Fifth, due to excessive moisture in the adhesive or incomplete drying and poor exhaust of the core layer, the honeycomb paperboard caused by high water content in the base paper is easily deformed, and local voids appear. Can use the water content is lower, the solid content is higher, easy to dry adhesive, and control the moisture of the base paper to control.
Sixth, due to the lack of quantitative paper or unreasonable design of the core parameters, the surface hardness of the honeycomb panel may not be sufficient, and the hand sinking may occur. This phenomenon can be improved by selecting the base paper whose main performance index meets the conditions.
Seventh, due to the bending deformation caused by the water absorption of the fiberboard, or the irrationality of the composite process, the phenomenon that the side surface paper is opened when the fiberboard and the honeycomb board are compounded without eliminating the internal stress during the molding process. This can be overcome by detecting the main parameters of the fiberboard and further optimizing the honeycomb board's composite process.
Eighth, because the position of the paper roll is skewed, the unevenness in the tension during the supply of the paper causes the wrinkles to appear in the paper. Adjusting the tension controller and paper guide roller of the paper exit can be overcome.
Ninth, due to the raw material of the honeycomb paper core, there is a phenomenon that the honeycomb paper core is not easily opened and the adhesion is serious. It can be adjusted by checking whether the moisture absorption effect of the honeycomb core paper meets the requirements.
Tenth, because the paper substrate is not waterproof, a large amount of water absorbs the strength of the tissue. After the paper honeycomb product is treated with a water repellent agent, the board surface deformation, degumming and the like may occur. The preference is given to the use of high-strength, high dimensional and stable honeycomb paperboard paperboards. The use of water-based water repellents to treat paper honeycombs when the water content is not too large can improve this phenomenon.
Honeycomb paperboard is a new type of packaging material, and its excellent characteristics determine its good development prospects. We must correctly understand its advantages, and what are its disadvantages. Now, what else needs to be noted technically. In order to better produce and use it.
Corrugated cardboard is another type of packaging material known to everyone. There are many similarities between honeycomb paperboard and corrugated paperboard, and there are many different places.
First, honeycomb paperboard and corrugated paperboard are structurally different. Honeycomb paperboard is thick and thin, and it is made of honeycomb paper core and two-layer paperboard glued together by adhesive. It belongs to a kind of three-layer composite paperboard. The thickness of the honeycomb paperboard is determined by the height of the honeycomb core paper. And, it can achieve the purpose of adjusting the thickness of the honeycomb paperboard by appropriately changing the height of the honeycomb core. The corrugated board has different types such as single-sided, three-layered, and five-layered. The number of core papers and panels required for different types of corrugated board is different. The same thickness of honeycomb paperboard saves the base paper needed for corrugated board. Moreover, the direction of the thickness of the honeycomb paperboard is the longitudinal direction of the honeycomb base paper, and the longitudinal compression strength and side pressure strength of the base paper are higher than those of the lateral direction. For corrugated board, the thickness direction of the corrugated board is the horizontal direction of the corrugated medium. So it is not as good as honeycomb paperboard in terms of ring pressure strength and side pressure strength.
Second, honeycomb paperboard and corrugated paperboard have different requirements for base paper. In general, honeycomb paperboard has higher requirements for water resistance, tear resistance, tear strength and flexibility of the base paper. Moreover, the paperboard manufacturing technology of honeycomb paperboard is relatively difficult.
Finally, there are major differences in the application performance of honeycomb paperboard and corrugated cardboard. Compared with corrugated paperboard, the honeycomb paperboard has the characteristics of light weight, strong compressive and folding resistance and so on. The same thickness of honeycomb paperboard is only about 70% of the same area of ​​corrugated cardboard. The special structure of the honeycomb paperboard makes it twice as flat as the corrugated cardboard with the same thickness. However, honeycomb paperboard is more expensive than corrugated paperboard. Although honeycomb paperboard saves material compared to corrugated paperboard, its requirements for base paper are relatively high, so the production cost is relatively high. Moreover, the manufacture of honeycomb paperboard is relatively difficult, so its comprehensive cost is relatively high. Furthermore, the emergence and development of corrugated board is relatively long, and the appearance of honeycomb paperboard is relatively late. Therefore, it is not as good as corrugated board in manufacturing technology and production equipment. It still has many technical deficiencies and it needs further improvement.
The appearance of honeycomb paperboard is not very long, so it has some problems in the production process. In general there are the following points.
First, due to improper quality and amount of adhesive, or poor bonding due to high drying temperature and other reasons such as the embrittlement of the adhesive layer, the upper and lower layers of paper are opened on a large area. This can be overcome by adjusting the formulation and type of adhesive, or by adjusting the drying process.
Second, due to too little glue on the glue layer or the new height deviation is too high, the pressure roller operation is poor and other reasons will cause the bottom of the cardboard adhesiveness is good, but when the tissue is torn by hand, there is a large area of ​​open glue phenomenon . The situation can be improved by detecting the operation of the upper gluing layer device, properly adjusting the paper feeding device of the core paper, and checking the height deviation of the honeycomb core layer.
Third, when the honeycomb paperboard is bent, the upper layer breaks, and the lower layer refers to the phenomenon of large area disintegrating. It can be adjusted by adjusting the formulation and type of the adhesive and appropriately lowering the drying temperature of the honeycomb paperboard.
Fourth, due to the poor quality of the core strip glue, the bottom of the peel strength, the improper draw ratio, or the improper process, the honeycomb core layer has more holes in the manufacturing process, and breakage occurs during stretching. Choosing a better base paper and adjusting its stretching process, preferably a core strip adhesive with a high peel strength can improve this situation.
Fifth, due to excessive moisture in the adhesive or incomplete drying and poor exhaust of the core layer, the honeycomb paperboard caused by high water content in the base paper is easily deformed, and local voids appear. Can use the water content is lower, the solid content is higher, easy to dry adhesive, and control the moisture of the base paper to control.
Sixth, due to the lack of quantitative paper or unreasonable design of the core parameters, the surface hardness of the honeycomb panel may not be sufficient, and the hand sinking may occur. This phenomenon can be improved by selecting the base paper whose main performance index meets the conditions.
Seventh, due to the bending deformation caused by the water absorption of the fiberboard, or the irrationality of the composite process, the phenomenon that the side surface paper is opened when the fiberboard and the honeycomb board are compounded without eliminating the internal stress during the molding process. This can be overcome by detecting the main parameters of the fiberboard and further optimizing the honeycomb board's composite process.
Eighth, because the position of the paper roll is skewed, the unevenness in the tension during the supply of the paper causes the wrinkles to appear in the paper. Adjusting the tension controller and paper guide roller of the paper exit can be overcome.
Ninth, due to the raw material of the honeycomb paper core, there is a phenomenon that the honeycomb paper core is not easily opened and the adhesion is serious. It can be adjusted by checking whether the moisture absorption effect of the honeycomb core paper meets the requirements.
Tenth, because the paper substrate is not waterproof, a large amount of water absorbs the strength of the tissue. After the paper honeycomb product is treated with a water repellent agent, the board surface deformation, degumming and the like may occur. The preference is given to the use of high-strength, high dimensional and stable honeycomb paperboard paperboards. The use of water-based water repellents to treat paper honeycombs when the water content is not too large can improve this phenomenon.
Honeycomb paperboard is a new type of packaging material, and its excellent characteristics determine its good development prospects. We must correctly understand its advantages, and what are its disadvantages. Now, what else needs to be noted technically. In order to better produce and use it.
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