Side pressure tester - basic knowledge of carton factory base paper

1 , the width of the base paper (also known as paper in Guangdong)

The width of the base paper is generally 800mm at the minimum. Of course, the paper mill can divide according to different widths. The maximum is currently 2800 , because the largest production line in China is 2800 , and the width of the production line of each factory is different. The biggest choice is different, but it is generally a segment of 5cm .
In the Pearl River Delta region, due to Hong Kong's custom, measured in inches, the minimum is 29 ” and the maximum is 55 ”, and the total number is 14 odd widths. The base paper produced into paperboard has 14 degrees of paperboard. The width) is 29 ", 31 ", 35 ", 37 ", 39 "... 55 ".
2 , the identification of the base paper
Classification of base paper (weight and code)
Base papers can be classified according to national standards, and they are also commonly used in the Pearl River Delta region. However, either method is based on the following principles:
( 1 )        Blast resistance index is a measure, generally the higher the burst index, the higher the level, according to the burst resistance index is divided into the following categories:
K paper: Burst resistance index: 3.2 or more   Weight range 130-280 g/m2
A paper: Burst resistance index: 2.7-3.2 weight range 130-230 g/m2
B paper: Burst resistance index: 2.3-2.7 weight range 130-200 g/m2
C paper: Burst resistance index: 2.2 or less   Weight range 110-200 g/m2
US card: U.S. imported cattle card, the Burst Index is generally above 4.3
Australia Card: Australia imported cattle card, breaking index is generally above 4.3
Eka: Russia imported cattle card, the breaking index is generally above 4.7
White card: Niu card with white surface, Burst resistance index is generally 2.3 or higher
Coated white paper: surface-coated white card with a burst resistance index of 1.8
( 2 )        Pearl River Delta Idiom Appellation
K paper: 250g/m2 T paper (white): 200g/m2
A paper: 175g/m2 2 paper: 125g/m2
B paper: 125g/m2 3 paper: 105-115g/m2
C Paper: 127g/m2 6 Paper: 200g/m2
G paper: 300g/m2 7 paper: 260g/m2
F paper: 112g/m2 8 paper: 310g/m2
W paper: 180g/m2 9 paper (white): 125g/m2
KW ( 140g/m2 ), also known as cow white 1 paper: 112g/m2
M paper: 160g/m2 5 paper: 150g/m2
According to use classification
Face paper: a layer of kraft paper above corrugated cardboard, also known as cardboard.
a. Face paper (linerboard) is generally unbleached kraft paper. Kraft paper is a fiber mainly composed of softwood kraft pulp. It is manufactured on a fourdrinier paper machine. The current production base paste is generally domestic waste paper, and the surface is used in the United States. Waste noodle is the main production.
b. Add a layer of bleached pulp to the top surface of the unbleached linerboard paper during papermaking, so that the linerboard paper is white, and the one-side linerboard is called whiteboard linerboard, suitable for printing.
c. Physical properties of boxboard are burst strength, ring pressure strength
d. The ration of boxboard is generally ( 115-280g/m2 ).
Corrugated paper: The corrugated paper includes core paper (medium paper) and corrugated paper that are used to produce corrugated board.
a. It is mainly made of semi-chemical pulp (that is, raw slurry is soaked in steam with sulphite and soda ash and then mechanically ground into pulp) and is made on a Fourdrinier paper machine. Currently, the main domestic production is waste paper.
b. The main physical indicators are the ring pressure strength and crack length.
c. The amount of corrugated paper is generally 60-170 g/m2.
Paper: The innermost layer of corrugated board. The commonly used paper is also called linerboard.
However, liner papers generally use linerboard grades that are inferior to liner grades.