Products > Technical Information
Printing (Artwork Requirements)
ImagesResolution:
Image Scale
Screen Values
|
Layout
Software
- Adobe Illustrator or Photoshop
Number of Colors
- Eight colours
Text Size
- Minimum: 6 pt (point)
- Texts/fonts have to be converted to outlines
- Normal texts have to be made from only one separation
- The separations around title texts and negative texts should be under 2
- If the separations around negative texts are over 2, such as in the example of negative texts in a dark image, outlines with 0.3 mm in the most appropriate dark separation (the darkest one) have to be required around negative texts.
Barcode
- Barcode numbers can be converted into standard barcodes.
- Minimum scale of barcode: 85%, Best scale: 100%
- The colour of the barcode has to be the darkest single separation, while the background colour has to be white or a light colour
- Bars have to be parallel with the rewinding direction.
- Barcodes must meet international size requirements
Eyemark
- The eyemark must be made of darkest colour 100% tint, for example: 100% of black and white underneath with 0.5 mm trapping.
- The interval between two eyemarks in the rewinding direction has to be a single color or transparent.
- If using a dark background, the eyemark must be white.
Vignettes
- Composed in no more than four colours
- Minimum value: 3%
- Maximum value: 100%
Frames
- Minimum width: 0.2 mm
- Frame width thinner than 1 mm has to be made in one solid color.
Required documents
- CD or MO disk
- If special effects are designed, the construction layers must appear on the file.
Sample Colour Proof
- If special colours are used, Pantone numbers must be specified and/or sample bag has to be attached
Product dimensions
- The bag size must be specified and the position of the artwork on the bag indicated
Quality control
The following key areas are monitored for quality control:
- Lamination
- Slitting/rewinding
- Bag forming
- Finishing
- Test surface wetting tension of base films
- Print registration
- Ink cementing strength
- Film elongation and shrinkage
- Solvent residue
- Inks from DIC of Japan
Lamination
- Test surface wetting tension of base films
- Adhesion strength
- Film elongation and shrinkage due to lamination
- Laminate solvent residual
Slitting/rewinding
- Adhesion strength
- Elongation
- Heat sealing strength
- Coefficient of friction
Bag making/finishing
- Length
- Width
- Adhesion strength
- Heat seal strength
- Coefficient of friction
- Vacuum test
- Boiling test
- Pressure test
Finishing
- Oxygen transmission rate (OTR). Via SGS.
- Water vapour transmission rate (WVTR). Via SGS.