1.內外徑及制造尺寸的計算
1. Calculation of internal and external diameters and manufacturing dimensions
內徑尺寸的確定因素主要有內裝物大外徑尺寸、按內裝物形式確定的公差系數、內裝物排列方式、內裝物隔襯與緩沖件的相關尺寸。內徑尺寸的計算可由下式得到：Xi=Xmaxnx+d(nx－1) +k’ +T。式中，Xi為紙箱內徑尺寸；Xmax為單個內裝物大外徑尺寸；d為內裝物在紙箱內某一方向的排列數目；k’為紙箱內徑尺寸補償量；T是隔襯或緩沖件總厚度。長度單位均為mm。需要滿足Xi >內裝商品的外徑尺寸。修正系數及公差系數可查表得到。
The determination factors of the inner diameter dimension mainly include the large outer diameter dimension of the interior, the tolerance coefficient determined according to the form of the interior, the arrangement of the interior, and the relevant dimensions of the interior spacer and buffer. The inner diameter dimension can be calculated by the following formula: xi = xmaxnx + D (nx-1) + K '+ t. Where Xi is the inner diameter of the carton; Xmax refers to the large outer diameter of a single interior; D is the arrangement number of contents in a certain direction in the carton; K 'is the compensation for the inner diameter of the carton; T is the total thickness of the spacer or buffer. The unit of length is mm. It is required to meet Xi > outer diameter dimension of internal goods. The correction coefficient and tolerance coefficient can be obtained from the table.
制造尺寸的計算為：X=Xi +t +k 。式中， 為瓦楞紙板制造尺寸， 為紙板厚度， 為修正系數。 值的大小與紙箱的具體尺寸有關。在實際使用過程中，由于內搖蓋的回彈作用，使其有向外翹起的趨勢。為減少由于這種原因而造成的凈空高度增加，高度方向上的值應為2t
The calculation of manufacturing dimension is: x = Xi + T + K. Where, is the manufacturing size of corrugated board, is the thickness of board and is the correction coefficient. The size of the value is related to the specific size of the carton. In the actual use process, due to the rebound effect of the inner swing cover, it tends to tilt outward. In order to reduce the increase of headroom caused by this reason, the value in the height direction shall be 2T
外徑尺寸計算為：X0=X+K。式中，X0為外徑尺寸，K為修正系數。
The outer diameter dimension is calculated as: x0 = x + K. Where x0 is the outer diameter dimension and K is the correction factor.
2.紙箱搖蓋尺寸的計算
2. Calculation of carton flap size
瓦楞紙箱外搖蓋的制造尺寸也是需要注意的一個關鍵部位。在瓦楞紙箱外搖蓋對接封合的箱型中，如0201、0204、0207等，搖蓋寬度制造尺寸理論值應為箱寬制造尺寸的二分之一。但是，由于內搖蓋的回彈作用，箱蓋合上后并不是水平的，而是略傾斜，外搖蓋必然在對接處產生一定的間隙。因此，外搖蓋的寬度并不是寬度的一半，而是稍長，所以在實際的生產中要加上一個放大系數。放大系數可以通過三角函數計算得出。不過，由于紙箱自身的可塑性，也為了便于計算，多數企業都根據紙板的厚度計算出一個固定的放大系數。如下表所示：
The manufacturing size of corrugated box outer swing cover is also a key part that needs attention. In the case of butt sealing of corrugated box outer swing cover, such as 0201, 0204, 0207, etc., the theoretical value of manufacturing dimension of swing cover width shall be half of the manufacturing dimension of box width. However, due to the rebound effect of the inner swing cover, the box cover is not horizontal after closing, but slightly inclined, and the outer swing cover must produce a certain gap at the butt joint. Therefore, the width of the outer swing cover is not half of the width, but slightly longer, so an amplification factor should be added in the actual production. The amplification factor can be calculated by trigonometric function. However, due to the plasticity of the carton itself and for ease of calculation, most enterprises calculate a fixed magnification factor according to the thickness of the cardboard. As shown in the following table:
紙箱搖蓋的放大系數
Magnification factor of carton flap
紙板厚度 3 mm以下 3 mm~5 mm 5 mm~8 mm 8 mm~12 mm
Paperboard thickness less than 3 mm 3 mm ~ 5 mm 5 mm ~ 8 mm 8 mm ~ 12 mm
放大系數 無 加大1 mm 加大3 mm 加大4 mm
The magnification factor is not increased by 1 mm, increased by 3 mm, increased by 4 mm
當然，這樣的放大系數只是適合于一般的瓦楞紙箱，如果遇到對搖蓋要求很高的紙箱，可以通過函數求出紙箱搖蓋的放大系數。另外，上表列出的放大系數不適合于寬度低于20 cm的紙箱。
Of course, this amplification factor is only suitable for general corrugated boxes. If you encounter cartons with high requirements for flap, you can calculate the amplification factor of carton flap through function. In addition, the magnification factors listed in the above table are not suitable for cartons with a width of less than 20 cm.
3.接頭尺寸的設計
3. Design of joint size
瓦楞紙箱通過粘合、釘合接頭來成型，接頭尺的尺寸一般根據瓦楞層數及工廠的工藝水平而定。為保持主箱面（LH面）的印刷面不被破壞，接頭一般應與LH面連接。單瓦楞接頭尺寸一般為35 mm～40 mm，雙瓦楞45 mm～50 mm，三瓦楞為50 mm。
Corrugated boxes are formed by bonding and nailing joints. The size of the joint ruler is generally determined according to the number of corrugated layers and the process level of the factory. In order to keep the printed surface of the main box surface (LH surface) from being damaged, the joint shall generally be connected with the LH surface. The size of single corrugated joint is generally 35 mm ~ 40 mm, double corrugated joint is 45 mm ~ 50 mm, and three corrugated joint is 50 mm.
4.紙箱落料規格的計算
4. Calculation of carton blanking specification
生產的紙箱還是以0201型瓦楞紙箱為主，如下圖所示。根據上述所講，就可以計算出要將一個普通的0201型紙箱投于生產所需要耗費多少材料了。
The cartons produced are mainly 0201 corrugated cartons, as shown in the figure below. According to the above, we can calculate the amount of materials needed to put an ordinary 0201 carton into production.
紙板的長度=2L+2B+紙箱的結舌；
Length of paperboard = 2L + 2B + tongue of carton;
紙板的寬度=H+2倍的紙箱搖蓋。
Width of paperboard = H + 2 times of carton shake cover.
根據公式，我們計算出紙箱的落料規格。這里計算出了紙箱的凈料規格，在生產時還會修邊。為了盡量節省材料，一般修邊尺寸不會大于1 cm。靠近結舌的邊不需要修邊。異型箱落料尺寸根據同樣的原理即可算出，只是不同的箱型計算的公式不一樣而已。
According to the formula, we calculate the blanking specification of the carton. The net material specification of the carton is calculated here, and the edge will be trimmed during production. In order to save materials as much as possible, the general trimming size will not be greater than 1 cm. The edge near the tongue does not need trimming. The blanking size of special-shaped box can be calculated according to the same principle, but the calculation formulas of different box types are different.
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