Patent EP-2241439-A1 (EP)
Inventor: ROIER PAUL
IPC: B32B29/08
Filed: 2010-04-19
Abstract: The multilayer corrugated board comprises a smooth first external paper cover web (1), a smooth second external paper cover web (2), a smooth internal paper cover web (3), and a first corrugated paper web (4, 5) that has a first wave type with a first wave part within a given division area, comprises a first corrugated head (6) of the first wave type, is arranged between the first external paper cover web and a first internal paper cover web and is adhered at its first corrugated head with the first external paper cover web and the first internal paper cover web. The multilayer corrugated board comprises a smooth first external paper cover web (1), a smooth second external paper cover web (2), a smooth internal paper cover web (3), a first corrugated paper web (4, 5) that has a first wave type with a first wave part within a given division area, comprises a first corrugated head (6) of the first wave type, is arranged between the first external paper cover web and a first internal paper cover web and is adhered at its first corrugated head with the first external paper cover web and the first internal paper cover web, and a second corrugated paper web that has a second wave type with a second wave part within a given division area, comprises a second corrugated head of the second wave, is arranged between the second external paper cover web and second internal paper cover web and is adhered at its second corrugated head with the second external paper cover web and the second internal paper cover web. The first wave type (A, B, C or E) and the second wave type (B, D, E or F) and the first part (t1) and the second part (t2) correspond with its given division area according to DIN 55468-1, where the first and second divisions are selected within its respective given division area in such a way that the respective number of the division of the first and second corrugated paper web is minimized in which the sum of the division is same, where t1x t2 and a x t1 =bx t2 and a and b are whole-numbered, where a= 3 and b= 4. A combination of first corrugated paper web with first wave type (A) with first division (t1) in a given division area is 8.0 mm = t1 = 10.0 mm and a combination of a second corrugated paper web with a second wave type (B) with second division (t2) in a given division area is 5.5 mm = t2 = 6.5 mm, where a =1 and b=2, a combination of first corrugated paper web with first wave type (C) with first division (t1) in a given division area is 6.8 mm = t1 = 8.1 mm and a combination of a second corrugated paper web with a second wave type (F) with second division (t2) in a given division area is 1.9 mm = t2 = 2.6 mm, where a =1 and b=3, a combination of first corrugated paper web with first wave type (C) with first division (t1) in a given division area is 6.8 mm = t1 = 8.1 mm and a combination of a second corrugated paper web with a second wave type (B) with second division (t2) in a given division area is 5.5 mm = t2 = 6.5 mm, where a =3 and b=4, a combination of first corrugated paper web with first wave type (B) with first division (t1) in a given division area is 5.5 mm = t1 = 6.5 mm and a combination of a second corrugated paper web with a second wave type (E) with second division (t2) in a given division area is 3.0 mm = t2 = 3.5 mm, where a =1 and b=2, a combination of first corrugated paper web with first wave type (E) with first division (t1) in a given division area is 3.0 mm = t1 = 3.5 mm and a combination of a second corrugated paper web with a second wave type (F) with second division (t2) in a given division area is 1.9 mm = t2 = 2.6 mm, where a =2 and b=3, a combination of first corrugated paper web with first wave type (C) with first division (t1) in a given division area is 6.8 mm = t1 = 8.1 mm and a combination of a second corrugated paper web with a second wave type (D) with second division (t2) in a given division area is 3.8 mm = t2 = 4.8 mm, where a =1 and b=2, a combination of first corrugated paper web with first wave type (D) with first division (t1) in a given division area is 3.8 mm = t1 = 4.8 mm and a combination of a second corrugated paper web with a second wave type (F) with second division (t2) in a given division area is 1.9 mm = t2 = 2.6 mm, where a =1 and b=2, and a combination of first corrugated paper web with first wave type (B) with first division (t1) in a given division area is 5.5 mm = t1 = 6.5 mm and a combination of a second corrugated paper web with a second wave type (D) with second division (t2) in a given division area is 3.8 mm = t2 = 4.8 mm, where a =2 and b=3. The combination of first corrugated paper web with first wave type (A) with first division (t1) in a given division area is 8.0 mm = t1 = 10.0 mm, a combination of second corrugated paper web with a second wave type (B) with second division (t2) in a given division area is 5.5 mm = t2 = 6.5 mm and a third wave type (B) with a part in a given division area is 5.5 mm = t3 = 6.5 mm, where a =2, b=3 and c=3. The combination of first corrugated paper web with first wave type (C) with first division (t1) in a given division area is 6.8 mm = t1 = 8.1 mm, a combination of second corrugated paper web with a second wave type (D) with second division (t2) in a given division area is 3.8 mm = t2 = 4.8 mm and a third wave type (D) with a part in a given division area is 3.8 mm = t3 = 4.8 mm, where a =1, b=2 and c=2. The first corrugated head of the first paper web and the second corrugated head of the second paper web are adhered with the interior paper cover web in such a way that first corrugated head in an interval of ax t1 and the second corrugated head in interval of bx t2 are congruent to each other. The third corrugated head of the third paper web is adhered with the interior paper cover web in such a way that the second corrugated head in an interval of bx t2 and the third corrugated head in interval of cx t3 are congruent to each other. An independent claim is included for a method for the production of multi-layered corrugated board.