Single-watt single-faced corrugated cardboard was invented in 1871 by American engineer Athert L. Jones, who used it as a cushioning material to wrap fragile glass and ceramic vessels. Later, it was improved by oliver. Long to form a double-faced corrugated board similar to the one currently used. Corrugated cardboard has good elasticity, strength and stiffness. The carton and carton packaging products made by it have many advantages compared with traditional wooden boxes and metal barrels, so they are more and more widely used. At present, in countries where paper product packaging is developed, the proportion of corrugated paperboard accounts for almost 1/3 to l/4 of the entire packaging material. The testing equipment for corrugated cardboard and corrugated boxes is as follows: Carton: Carton compressive strength testing machine, simulation car transport vibration table, packaging drop test machine, etc. Cardboard: cardboard ring pressure / edge pressure / bond strength test machine, cardboard breakage tester, moisture tester, thickness gauge, etc. Sanitaryware Commode,Bathroom Commodes,Ceramic Commodes,Toilet Commodes Jiangyin Huashi Medical Equipment Co.,Ltd , https://www.medicalwellcare.com
I. Definition 1. Corrugated paper refers to the regular and permanent paper formed by the corrugated base paper after creping.
2. Corrugated board refers to a composite board made of one or more layers of corrugated paper bonded between several layers of paper or cardboard for making corrugated boxes.
3, corrugated board Zui small comprehensive quantification refers to the sum of the quantitative paper or paperboard of the corrugated board except corrugated paper.
Second, the type of corrugated board (a), according to the shape of the corrugated tooth 1. V-shaped corrugated 2. U-shaped corrugated 3. UV type corrugated (2), classified according to corrugated type 1. Type A corrugated 2. Type B corrugated 3. Type C corrugated 4. E-type corrugated (3), classified according to the number of layers of corrugated 1. Single-sided single-faced corrugated cardboard 2. Single-sided double-sided corrugated cardboard 3. Double-sided double-sided (five-layer) corrugated cardboard 4. Three-dimensional double-sided (seven-layer) corrugated cardboard (IV) China's classification requirements for corrugated cardboard GB/T6544-2008 "corrugated cardboard" standard provisions: divided into single corrugated cardboard (three-layer corrugated cardboard), double corrugated cardboard (five Layer corrugated cardboard), three corrugated cardboard (seven layers of corrugated cardboard) three categories. According to the small comprehensive quantitative of corrugated board, the single and double corrugated board are divided into 5 categories, and the three-layered board is divided into 4 categories; each type is based on the burst strength or the edge strength (corrugated paper, box board and adhesive). It is the main raw material for the production of corrugated cardboard. Their quality determines the strength of corrugated board. It is divided into superior and qualified products, and a total of 28 corrugated cardboard.
Corrugated cardboard grade division!