SPECIFICATION FOR KRAFT PAPER CORE FOR GRAPHIC ARTS FILM ROLL

Physical Dimensions:

S.No.

Roll Size

Kraft Paper core
Length

Dimension (in mm)

Inner diameter

Thickness

Outer diameter

1.

16” x 98.4’/100’
(406.4mm x 30/30.5M)

409 ± 1mm
      

76 + 0.1
      - 00

3

82

2.

18” x 98.4’/100
(457.2mm x 30.5M)

461 ±1 mm
       

76 + 0.1
      - 00

3

82

3.

20” x 98.4’/100’
(508mm x 30/30.5M)

510 ±1 mm
       

76 + 0.1
      - 00

3

82

4.

22” x 98.4/100’
(558.8mm x 30/30.5M)

560 ± 1mm
       

76 + 0.1
     -  00

3

82

5.

24”x98.4’/100’
(609.6mm x 30/30.5M)

611 ± 1mm
       

76 + 0.1
     - 00

3

82

6.

26” x 90.4’/100’
(660.4mm x 30/30.5M)

662 ± 1mm
      

76 + 0.1
- 00

3

82

7.

30” x 98.4’/100’
762mm x 30/30.5M)

765 ± 1mm
      

76 + 0.1
      - 00

3

82

8.

40” x 98.4’/100’
(1016mm x 30/30.5M)

1020 ± 1mm
        

76 + 0.1
      - 00

3

82


2.

Material of Construction

Cores should be fully made out of   Kraft paper.
The top layer should be 90gsm.
Map litho paper with a layer of poly Lamination over it (20gsm)

3.

Outer surface

Should be smooth and free from wrinkles.

4.

Rigidity

Should be very rigid.

5.

Photosensitivity test

Should pass photographic inactivity test Ref
(SOP No. 204-06-007-00)

6.

Moisture content

9% maximum (SOP No. 204-06-007-00)

7.

Edges and inner surface

Should be free from burns.

8.

Pasting

Should be with PVA adhesive only should
Devoid of dirt particles,
Bulges, smudges and  Delamination.

9.

Finishing

Should be good.