Paper Bag is a widely used packaging product. According to different materials, there are corrugated cardboard boxes, single-layer cardboard boxes, etc. The commonly used Paper Bag boxes are three-layer and five-layer, and seven-layer is less used. The joint size is determined according to the number of layers of the Paper Bag. The joint is generally 75px, and the joint of the five-layer box is generally 100px.
Each layer is divided into lining paper, corrugated paper, core paper and face paper. The lining and face paper include tea board paper, kraft paper, and corrugated paper for the core paper. A Paper Bag made of three-layer cardboard formed from base paper. Five-layer corrugated box is also called double corrugated box, referred to as three yellow and two tiles. The cardboard structure of the five-layer corrugated box is composed of face paper, lining paper, core paper and two pieces of corrugated paper.
According to the situation of our company's internal packaging, our company uses A flute for three-layer paper and BC flute for five-layer paper.
Three-layer paper: composed of face paper, corrugated core paper, and lining paper
Five layers of paper: surface paper + corrugated core paper + separator paper + corrugated core paper + lining paper, a total of five layers
Classification of cardboard materials: cardboard materials are classified according to the weight per unit area, mainly the following cardboard materials: K paper: 250g/m² A paper: 175g/m² B paper: 125g/m² 7 paper: 200g/m² 8 paper: 260g/ m² C paper: 127g/m² Core paper: Basic 100g/m² Large machine 105-110g/m² Reinforced core paper: + Paper 115g/m² Paper Bags are commonly used with three layers and five layers, seven layers are used less, and each layer is divided into inner layers Paper, corrugated paper, core paper, surface paper, inner and outer surface paper include tea board paper, kraft paper, and corrugated paper for core paper. The color and feel of various papers are different, and the paper (color, feel) produced by different manufacturers is also different. , The national standard for corrugated boxes is GB6543-86 "corrugated boxes".
The corrugated type of corrugated cardboard is divided into four categories: A, B, C, and E according to the height of the corrugated cardboard. The mechanical properties of different corrugated cardboard are also different.
Plane pressure: The plane pressure of the A-type corrugated cardboard has a higher compressive strength, while the B-type is the opposite, and the C-type has better plane pressure, vertical pressure, parallel pressure and buffer force;
Thickness: The thickness between corrugated cardboards, A-type is larger, C-type is second, B-type is next, E-type is smaller, because the cardboard with small thickness is easier to process and bend, therefore, B-shaped corrugated cardboard is widely used for the pressure resistance of boxes Packing boxes with low strength requirements.
In addition, we also sell Cardboard Boxes, printing label, Paper Bags, Hang Tag, Paper Gift Box and Toys Box, customers are welcome to come and consult.
