Paper shelves and paper display shelves have the advantages of green environmental protection, convenient transportation, rapid assembly and so on. Placed in the sales place, they can play the role of displaying commodities, conveying information and promoting sales. The following is the classification and process flow of corrugated board.
1, corrugated board classification
(1) : According to the type of flute :A, C, B, E and their combination, such as :AB flute, BC flute, BBC flute, etc. Now the market has more fine corrugated F in production use.
(2) : According to the number of base paper layers: two layers of cardboard, three layers of cardboard, four layers of cardboard, five layers of cardboard, seven layers of cardboard, etc.;
(3) : According to the classification of corrugated shape :U shape, V shape, UV shape; Now on the market general UV shape;
(4) Corrugated performance comparison: corrugated type corrugated high several /30mm compression strength edge compression strength
A 4.5-5.0 34+2 1.55 4 1
C 3.5-4.0 38+2 1.47 3 2
B 2.5-3.0 50+2 1.36 2 3
E 1.1-2.0 96+2 1.26 1 4
(5) Corrugated display:
C and B and A
(6) Others:
Flute; single corrugated board (also known as three layers of board):single wall; double corrugated board (also known as five-layer board):double wall; Seven layers of corrugated board :triple wall;
2. Corrugated board production process
(1) Working principle of single-sided machine (positive pressure single-sided machine):
Principle overview: The corrugated base paper is pressed and formed by the upper and lower corrugated rollers, and pasted by the upper pasting roller. The surface paper and the formed corrugated paper are fitted together at the tangential line of the pressure roller and the upper corrugated roller to form the two-layer corrugated board. Then the surface paper is combined with other single corrugated board and the surface paper at the position of the double-sided machine via the transfer belt.
Base paper classification (displaypacking dot com)
corrugating medium (corrugating medium)
The national standard is divided into four kinds: Grade A, Grade B, Grade C and Grade D. D grade corrugated paper is basically eliminated by the market, few manufacturers buy use.
Box board paper
Cowhide card paper (American card, Russian card). Features: Long fiber, double sizing, high physical strength, rough cardboard; Pure wood pulp or small amount of OCC. For short: imported cattle card.
Imitation cowhide cardboard. Features: 15-25% wood pulp hanging on the surface, the rest is OCC; The fiber is shorter and the strength is worse than that of cow card paper. Paper surface flat, different degrees of sizing (absorbency 30-55g/m2), surface dyeing treatment. Abbreviation: domestic cattle card.
White cardboard. White cattle card base, surface bleached wood pulp, the rest is natural or dyed wood pulp. (Russian white, Swedish white card, Finnish white card); Whiteboard (bleached wood pulp, the rest is deinked or non-deinked waste paper); Coated whiteboard (white on white, gray on white, --).
Recycled paper. All of the OCC, but different from corrugated paper. The surface is 11# and above AOCC wall and dyed. The market is generally known as C - grade box board paper, part of the T paper.
2) Basic performance of carton base paper.
Physical index: quantitative, moisture, tightness, breaking strength (breaking index), ring pressure strength (ring pressure index), positive/reverse water absorption, folding resistance.
Appearance index: smoothness, color difference, whiteness.
Specific base paper standard reference :GB13023(corrugated paper national standard), GB13024(box board paper national standard). Relevant projects refer to the latest industry trends or standards.
