The most important use of corrugated boxes is to pack items, but if there is a size deviation in the carton, it is equivalent to making a fatal mistake。Many people in the industry will feel that the size management control of the carton is the most basic and the simplest, but as the user of the corrugated carton often does not think so, the size issue directly determines the value of the carton。Customers will only accept it if it is the right size。The size is not right, and no matter how well the other projects are done, it will not help。However, to really manage and control the size of the carton is a very systematic work。Therefore, to do simple things right at once is the most economical and scientific management。
The good size is the "cornerstone"
The size of corrugated boxes has three forms: external size, manufacturing size, and internal size。These three forms are composed of the length, width and height of the carton。Therefore, the specific expression is divided into foreign width and height, internal length and width and height, and manufacturing length and width and height。The outer size is the size of the volume taken from the outside of the corrugated box, which is generally used as the basis for calculating the freight and the marking on the outside of the carton。The inner size is the distance from the surface to the surface of the corrugated box after the support molding. The inner size is determined according to the volume size of the contents. Under normal circumstances, the inner size is slightly larger than the volume of the contents。The manufacturing size is the production process size converted according to the inner size of the carton, and the production operation is generally carried out according to the manufacturing size and the adjustment of the press line。
The relationship between external size, internal size and manufacturing size: (Taking 0201 carton as an example)
Outer dimension length (width)= inner dimension length (width)+ Thickness of corrugated board * Number of layers of corrugated board (2 layers)
High external size = high internal size + Thickness of corrugated board * Number of layers of corrugated board (including 4 layers of internal and external shake caps)
Manufacturing dimension length (width)= internal dimension length (width)+ corrugated board thickness ÷2 * the number of layers of corrugated board
High manufacturing size = high internal size + thickness of corrugated board ÷2 * the number of layers of corrugated board
There is also a comprehensive size in the national standard, the comprehensive size of the carton is the sum of the length, width and height of the carton。In the above three sizes, the manufacturing size is relatively flexible, and changes at any time according to the thickness of different corrugated cardboard, different molding equipment and different molding processes, so mastering the manufacturing size is the first step to control the size of the carton。The same is true of shaped cartons, no matter how many layers of corrugated cardboard, the internal size must be added to the total thickness of these corrugated cardboard, is the outer size of the carton。
Scientific design is a flu shot
Design the size of the corrugated box first of all to carry out the design of the internal size。Because the internal size is relatively easy to determine, it is determined by the physical measurement of the goods inside or the external size calculated by the combination of the goods inside。The discharge of the contents should save space as much as possible, and reasonably consider the factors of supporting force。From a mechanical point of view, if the contents share a part of the supporting force, the pressure index requirements of the carton can be appropriately reduced。Therefore, it means the decrease of cost and the gain of profit。If the contents are cartons, consider the direction of the carton, because the longitudinal filament is better than the transverse filament support。
In the forming process of the corrugated box, the corrugated cardboard should be pressed, so that the corrugated cardboard is well bent, and the structure of the corrugated cardboard is damaged so that the inner paper shrinks and the surface paper extends。The amount of its expansion and contraction is directly related to the thickness of the cardboard and the way the line is pressed。The thicker the cardboard, the greater the expansion value, the wider the pressure line, the greater the expansion value。However, whether it is a two-line, three-line or five-line molding method of corrugated boxes, the protruding part of the bottom line of the wire wheel will squeeze the pressure part of the corrugated board into the center of the corrugated board。Therefore, the inner size of the corrugated box is slightly shorter than the distance between the line and the press line when the corrugated box is unfolded。In this way, the shortened part of the size is added as a correction value, which is closely related to the thickness of the corrugated board。
The most common carton in order to protect the contents, the outer roll cover is usually butt sealed。This requires that the size of the lid of the carton must be calculated accurately, and there can be no gap after docking, nor can the lid be superimposed。In principle, the theoretical value of the manufacturing size of the swing cover width should be half of the manufacturing size of the box width。However, because the inner and outer swing covers are on the same pressure line, the inner swing covers have a supporting effect on the outer swing covers after folding, and the outer swing covers must produce a certain gap at the opposite point。Therefore, it is very important to calculate the correction value of the manufacturing size of the outer swing cover width。This correction value is generally half of the thickness of the pressed cardboard, but the expansion and contraction of the cardboard surface paper and the inner paper caused by different pressing equipment are not the same, so it is best to determine by actual measurement。
总之,In the structural design of corrugated boxes,To be determined according to the use of manufacturing equipment and different production processes and the use of different corrugated cardboard and the type and nature of the internal goods,Only after mastering all the design of the corrugated box structure, size related content，In order to create a corrugated box to protect goods and beautify goods, the main use is to package goods，But if there is a size deviation in the carton，That would be a fatal mistake。Many people in the industry will feel that the size management control of the carton is the most basic and the simplest, but as the user of the corrugated carton often does not think so, the size issue directly determines the value of the carton。Customers will only accept it if it is the right size。The size is not right, and no matter how well the other projects are done, it will not help。However, to really manage and control the size of the carton is a very systematic work。Therefore, to do simple things right at once is the most economical and scientific management。
The good size is the "cornerstone"
The size of corrugated boxes has three forms: external size, manufacturing size, and internal size。These three forms are composed of the length, width and height of the carton。Therefore, the specific expression is divided into foreign width and height, internal length and width and height, and manufacturing length and width and height。The outer size is the size of the volume taken from the outside of the corrugated box, which is generally used as the basis for calculating the freight and the marking on the outside of the carton。The inner size is the distance from the surface to the surface of the corrugated box after the support molding. The inner size is determined according to the volume size of the contents. Under normal circumstances, the inner size is slightly larger than the volume of the contents。The manufacturing size is the production process size converted according to the inner size of the carton, and the production operation is generally carried out according to the manufacturing size and the adjustment of the press line。
The relationship between external size, internal size and manufacturing size: (Taking 0201 carton as an example)
Outer dimension length (width)= inner dimension length (width)+ Thickness of corrugated board * Number of layers of corrugated board (2 layers)
High external size = high internal size + Thickness of corrugated board * Number of layers of corrugated board (including 4 layers of internal and external shake caps)
Manufacturing dimension length (width)= internal dimension length (width)+ corrugated board thickness ÷2 * the number of layers of corrugated board
High manufacturing size = high internal size + thickness of corrugated board ÷2 * the number of layers of corrugated board
There is also a comprehensive size in the national standard, the comprehensive size of the carton is the sum of the length, width and height of the carton。In the above three sizes, the manufacturing size is relatively flexible, and changes at any time according to the thickness of different corrugated cardboard, different molding equipment and different molding processes, so mastering the manufacturing size is the first step to control the size of the carton。The same is true of shaped cartons, no matter how many layers of corrugated cardboard, the internal size must be added to the total thickness of these corrugated cardboard, is the outer size of the carton。
Scientific design is a flu shot
Design the size of the corrugated box first of all to carry out the design of the internal size。Because the internal size is relatively easy to determine, it is determined by the physical measurement of the goods inside or the external size calculated by the combination of the goods inside。The discharge of the contents should save space as much as possible, and reasonably consider the factors of supporting force。From a mechanical point of view, if the contents share a part of the supporting force, the pressure index requirements of the carton can be appropriately reduced。Therefore, it means the decrease of cost and the gain of profit。If the contents are cartons, consider the direction of the carton, because the longitudinal filament is better than the transverse filament support。
In the forming process of the corrugated box, the corrugated cardboard should be pressed, so that the corrugated cardboard is well bent, and the structure of the corrugated cardboard is damaged so that the inner paper shrinks and the surface paper extends。The amount of its expansion and contraction is directly related to the thickness of the cardboard and the way the line is pressed。The thicker the cardboard, the greater the expansion value, the wider the pressure line, the greater the expansion value。However, whether it is a two-line, three-line or five-line molding method of corrugated boxes, the protruding part of the bottom line of the wire wheel will squeeze the pressure part of the corrugated board into the center of the corrugated board。Therefore, the inner size of the corrugated box is slightly shorter than the distance between the line and the press line when the corrugated box is unfolded。In this way, the shortened part of the size is added as a correction value, which is closely related to the thickness of the corrugated board。
The most common carton in order to protect the contents, the outer roll cover is usually butt sealed。This requires that the size of the lid of the carton must be calculated accurately, and there can be no gap after docking, nor can the lid be superimposed。In principle, the theoretical value of the manufacturing size of the swing cover width should be half of the manufacturing size of the box width。However, because the inner and outer swing covers are on the same pressure line, the inner swing covers have a supporting effect on the outer swing covers after folding, and the outer swing covers must produce a certain gap at the opposite point。Therefore, it is very important to calculate the correction value of the manufacturing size of the outer swing cover width。This correction value is generally half of the thickness of the pressed cardboard, but the expansion and contraction of the cardboard surface paper and the inner paper caused by different pressing equipment are not the same, so it is best to determine by actual measurement。
总之,In the structural design of corrugated boxes,To be determined according to the use of manufacturing equipment and different production processes and the use of different corrugated cardboard and the type and nature of the internal goods,Only after mastering all the design of the corrugated box structure, size related content，In order to produce corrugated boxes that protect goods and beautify goods