Heavy carton paper is commonly referred to as kraft paper, because it is bleached, to a large extent to ensure its unique toughness, wear resistance, strength, in this case, it is usually used for packaging, general industrial paper is widely used in the packaging industry.

牛咭就是上面說的牛皮紙，白卡，芯紙，瓦楞原紙瓦楞紙箱也有使用，牛咭就是通過上面我們說的使用牛皮紙，由于它生產時為保證產品質量問題沒有進行漂白，纖維細胞物質多，顏色為黃色或褐色，像牛皮文明一樣硬吧，所以通稱為牛皮紙，現行業通的牛皮紙材料分為A紙、B紙、C紙、K紙，由于目前我國經濟技術等原因，從國外企業進口的有俄羅斯紙，美國牛咭等，K紙為zui好的牛咭紙250g/㎡，A紙一般為175g/㎡，B紙為150g/㎡，C紙為127g/㎡掛面紙。

Cattle card is the above-mentioned kraft paper, white card, core paper, corrugated base paper, corrugated box is also used, cattle card is through the above-mentioned use of kraft paper, because it is produced in order to ensure the quality of the product has not been bleached, fiber cell material, color is yellow or brown, as hard as cowhide civilization, so commonly known as kraft paper, is now the industry's common kraft paper Materials are divided into a paper, B paper, C paper and K paper. Due to the current economic and technological reasons in China, Russian paper and American cattle card are imported from foreign enterprises. K paper is made of Zui good cattle card paper with 250G / m2, a paper with 175g / m2, B paper with 150g / m2 and C paper with 127g / m2 hanging paper.

重型紙箱是一種由于包裝需求而不同于牛咭顏色的紙。 因為是漂白，硬度，耐磨性，穿刺等方面的指標太折扣，一般175g/㎡。紙芯的波紋紙，我們看到，一般是“3”，而不是與夾波紙張，一般紙芯，夾名為“隔膜”，但現在的包裝要求的質量要求，出現了高強度，高核心-Strength核心單位是按重量計算，有的人拿高強度芯或牛咭做隔，這樣做出來的紙板硬度的，試想，紙板單價肯定是積累每種材料。

Heavy duty carton is a kind of paper which is different from the color of cattle card due to packaging requirements. Because the indexes of bleaching, hardness, wear resistance and puncture are too low, generally 175g / m2. The corrugated paper with paper core, as we see, is generally "3", rather than with corrugated paper. Generally speaking, the paper core is called "diaphragm". However, the quality requirements of packaging now require high strength and high core strength. The core unit price is calculated by weight. Some people take high-strength core or cow card as separation, and the hardness of the cardboard produced by this way is determined. Imagine, the unit price of cardboard must be Accumulate each material.

重型紙箱單元破裂強度是千克力/厘米2，在一個紙箱平方厘米，并用大的力可能如何是紙板爆破，這是紙箱是否描述的重要指標。在紙箱24kgf / cm 2以下爆裂強度通常，具有超過25kgf / cm 2的一個沉重的紙箱。另一個指標是空的壓縮：壓縮是在空紙箱成型所定義，能夠單獨以重量計攜帶。此度量單位為kg，測試方法是在紙箱被加壓到的努力多少公斤，紙箱變形超過2CM，諸如用于在紙箱500公斤的對象，所述紙箱變形達到2CM，即示出了紙箱中的空容器高達500公斤的抗壓強度。該指標是堆疊的參考紙箱時。

The breaking strength of the heavy carton unit is kgf / cm2, in a carton square centimeter, and using a large force may be how the cardboard burst, which is an important indicator of whether the carton is described. The bursting strength of cartons below 24 kgf / cm 2 usually has a heavy carton of more than 25 kgf / cm 2. Another indicator is empty compression: compression is defined in empty carton molding and can be carried separately by weight. The unit of measurement is kg. The test method is how many kilograms of effort the carton is pressed to, and the deformation of the carton exceeds 2cm. For example, for objects with 500kg carton, the deformation of the carton reaches 2cm, which indicates the compressive strength of the empty container in the carton as high as 500kg. The indicator is stacked when the reference carton.

重型紙箱的定義：  重型普通紙箱的二項指標進行一定程度要高，質量具有一定效果要好，此二項指標，耐破強度要大于25kgf/cm2，空箱抗壓要大于2000公斤。達到一個這樣的指標才能在工作性能是與一厘米厚的木板或者相近，可以取代工箱供客戶需要使用。

Definition of heavy-duty carton: the two indicators of heavy-duty ordinary carton should be high to a certain extent, and the quality has a certain effect. The bursting strength of the two indicators should be greater than 25kgf / cm2, and the compressive strength of empty carton should be greater than 2000kg. To achieve such a target in the working performance is one centimeter thick board or similar, can replace the box for customers to use.