A kind of corrugated cardboard and its manufacturing method
A technology of corrugated cardboard and cardboard, applied in chemical instruments and methods, paper/cardboard layered products, lamination auxiliary operations, etc., can solve the problem of affecting the strength and service life of corrugated cardboard, affecting the safety of packaging, and easily absorbing water and being soaked through and other problems, to achieve the effect of improving water resistance, moisture resistance and insect resistance performance, easy operation, and improving mechanical strength
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Embodiment 2
[0065] Example 2: A corrugated cardboard, the difference from Example 1 is that the plastic waterproof film is a waterproof PE film, that is, the waterproof PE film refers to a film made of polyethylene (PE) as the main raw material. It has the advantages of good mechanical properties, high tensile strength, cold and heat resistance, grease resistance, most solvent resistance, excellent dilute acid resistance and waterproof and moisture-proof.
[0066] Mechanical test results: The corrugated cardboard obtained according to the above steps was subjected to a mechanical test. The bursting strength was 1611 kPa, the edge compressive strength was 11 kN / m, the bonding strength was 780 N / m, and the compressive strength was 8.21 kN. The code drop test is qualified (time: 24 h, height 1.2 m), and the stacking test is qualified (stacking height: 3 m, stacking weight: 189 kg, stacking time: 24 h), which is comparable to that produced by conventional technology. Compared with corrugated ...
Embodiment 3
[0068] Embodiment 3: A corrugated cardboard, the difference from Embodiment 1 is that the plastic waterproof film is HDPE waterproof film, that is, HDPE waterproof film is also called high-density polyethylene film, which is a kind of high crystallinity, non-polar permanent thermoplastic resin. It has good waterproof and moisture-proof and reverse osmosis performance.
[0069] Mechanical test results: The corrugated cardboard obtained by the above steps was subjected to mechanical tests. The bursting strength was 1642 kPa, the edge compressive strength was 12.1 kN / m, the bonding strength was 785 N / m, and the compressive strength was 7.55 kN. The code drop test is qualified (time: 24 h, height 1.2 m), and the stacking test is qualified (stacking height: 3 m, stacking weight: 189 kg, stacking time: 24 h), which is comparable to that produced by conventional technology. Compared with corrugated cardboard, its flat compressive strength, main bearing surface strength and overall c...
Embodiment 4
[0071] Embodiment 4: a kind of corrugated cardboard, the difference with embodiment 1 is: the paper surface waterproof material layer is the emulsified wax layer, and the emulsified wax layer is made of the water emulsion that natural wax and synthetic wax etc. make as main raw material It can not only reduce the hygroscopicity of paper by adding paraffin microemulsion, promote the uniform distribution of colloid in the paper fiber structure, but also make the inherent absorption network of paper fiber have ideal water resistance. The waterproof and moisture-proof performance of the above-mentioned face paper layer 1.
[0072]Mechanical test results: The corrugated cardboard obtained by the above-mentioned steps was subjected to a mechanical test. The bursting strength was 1568 kPa, the edge compressive strength was 12.22 kN / m, the bonding strength was 788 N / m, and the compressive strength was 7.69 kN. The code drop test is qualified (time: 24 h, height 1.2 m), and the stackin...
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