Knowledge of the hottest carton and paperboard

Corrugated board is mainly divided into three categories: single-sided corrugated board, double-sided single core corrugated board, double-sided double core corrugated board

corrugated board is divided into ten types according to the breaking strength and the weight per unit area

type

rupture strength

(above kg/cm2)

surface paperboard base weight (g/m2)

corrugated core paper weight

(g/m2)

average value

individual value

single

Layer

the first type

8.8

7.5

inner and outer surface paperboard should conform to cns11 The pressure of the pressure stabilizing valve spring is insufficient; 455 surface paperboard (kraft paperboard) standard, the base weight of

corrugated core paper agreed by both parties shall comply with the provisions of cns2955 corrugated core paper (semi chemical pulp) standard, Its base weight is determined by the agreement between the two parties

the second

12.3

10.5

the third on April 8th, 2015

14.0

11.9

the fourth

19.3

16.4

the fifth

24.5

20.8

.

Layer

the first type

14.0

11.9

the inner and outer surface paperboard shall comply with the provisions of cns1455 surface paperboard (kraft paperboard), The base weight of

two-layer corrugated core paper agreed by both parties shall comply with the provisions of cns2955 corrugated core paper (semi chemical pulp) standard, Its base weight is determined by the agreement between the two parties

the second

19.3

16.4

the third

245

20.8

the fourth

35.0

29.8

the fifth

42.0

35.7 Evonik verified the concept of hybrid polymers in Mar Experimental Factory.In the process of producing composite materials, time and cost are saved

corrugated cardboard can be divided into four types according to its shape: A, B, C and E, The number of corrugations within the length of 30 cm is as follows:

a rushed to the "management position" corrugation 33~39 4.4~value= "5" unitname= "mm" w:st= "on">5.0mm (height)

b corrugation 48~54 2.4~value= "3" unitname= "mm" w:st= "on">3.0mm (height)

c corrugation 39~45 3.4~value= "4" unitname= "mm" w:st= "on">4.0mm (height)

e corrugated 92~100 value= "1" unitname= "mm" w:st= "on">1mm (height)

d Comparison table of relative humidity and moisture content of carton

relative humidity (%r.h)

moisture content (%)

50%

7.5%

60%

9.0%

65% (standard condition)

9.8%

70%

10.5%

80%

11.7%

90%

13.2%

100%

14.8%

e. the pressure bearing parts of the carton are mainly the four corners of the carton after forming, Therefore, we should focus on checking the bearing capacity of the four corners when testing the pressure resistance and hardness of the carton

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