Hexagonal hole in staggered row (HT)

Perforation mark: H (w) T (t)

  • Open area (%): A0 = 100 * w2/t2 u %
  • Number of holes per m2: n = 1.154.700/t2
  • a2 = x * u + we
  • x = number of distances u; u = 0,866t; we = 1,15w
  • b2 = y * v + w
  • y = number of distances v; v = 0,5t
  • Perforation direction: a1 ili b1

Hexagonal hole in parallel row (HU)

Perforation mark: H (w) U (t1*t2)

  • Open area (%): A0 = 100 * w2 / t1 * t2 u %
  • Number of holes per m2: n = 1.000.000 / t1 * t2
  • a2 = t1 * x + w
  • x = number of distances t1
  • b2 = t2 * y + we
  • y = number of distances t2
  • t = w + c ; we = 1,15w
  • Perforation direction: a1 ili b1

Hexagonal hole in staggered row (HZ)

Perforation mark: H (w) Z (t1*t2)

  • Open area (%): A0 = 100 * w2/0,5t1 * t2 u %
  • Number of holes per m2: n = 1.000.000 / 0,5(t1 * t2)
  • a2 = x * t1 + w
  • x = number of distances t1 ; we = 1,15w
  • b2 = y * t2 + w
  • y = number of distances t2
  • Perforation direction: a1 ili b1

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