To ensure characteristics of the materials meet our internal standards, the characteristics of semi-finished products and finished products meet the expectations of customers. Materials, semi-finished products and finished products are inspected by specialized equipment as:
|Smoothness is very important in printing papers where it correlates well with ink consumption, halftone dot quality, and the overall finish of the printed work.|
Stiffness is the measure of force required to bend a paper through a specified angle. Stiffness is an important property for box boards, corrugating medium and to certain extent for printing papers also. A lumpy and flimsy paper can cause feeding and delivery problems in larger sheet presses. A sheet that is too stiff will cause problems in copier machines where it must traverse over, under, and around feed rollers.
Moisture content is percentage of moisture (%) in paper/paperboard weight. The sample is drying in oven at 105 +/- 2 oC in 30 minutes. The standard procedures are laid out in TAPPI T 412 and ISO 287, SCAN P4.
Bursting strength tells how much pressure corrugated paper can tolerate before rupture. This property is important for corrugated boxes. Bursting strength is measured as the maximum hydrostatic pressure require d to rupture the sample by constantly increasing the pressure applied through a rubber diaphragm on 1.20 – inch diameter (30.5 mm) sample. The standards procedure is described in TAPPI T 403.
Ring crush test (RCT) and Edge crush test (ECT)
The edgewise compression strength of corrugated board is the principal element in determining the dynamic compression strength of the container made from that board. Fiberboard shipping containers are frequently subjected to loads which are resisted by compression strength, making this property an important measure of the performance characteristics of corrugated board, and useful in controlling the manufacturing process and in measuring the quality of the finished product. Since edgewise compression strength can be estimated by a summation of the ring crush strengths of the liners and medium, this test becomes a useful one for the corrugated boxmaker. This test is performed according to ISO 12192 and TAPPI T 822.
The ability of a printing ink to resist discoloration and fading upon exposure to light or over time. Standard Test Method Ref. ASTM D4303 – 10(2016).
Chemical is added to packaging for many purposes. Most of them are controlled by legal, therefore the quantitative of these chemical must be well controlled. To determine the quantitative of these chemicals, Ultraviolet and visible (UV-Vis) absorption spectroscopy is the measurement of the attenuation of a beam of light after it passes through a sample or after reflection from a sample surface. Absorption measurements can be at a single wavelength or over an extended spectral range. UV/Vis spectroscopy is routinely used in analytical chemistry.
|Rub/ Abrasion tester
Abrasion/Rub test is a preferred one to determine the abrasion resistance of printed materials. The testing principle is simulate normal stresses on printed surfaces. Standard method Ref. ASTM D5264 – 98.
This practice is applicable to labels, folding cartons, corrugated boxes, inserts, circulars, and other packaging materials having applied graphics on a flat substrate.
This practice also can be used to evaluate the relative abrasion resistance of printed inks, coatings, laminates, and substrates.
|Creasing line Tester
The machine gives to predict the ‘runability’ of a sample board or finished carton before committing valuable materials or machine time.
Board Stiffness and Crease Recovery are key characteristics that affect the running performance of cartons on high speed packaging machines.
|Color Viewing Cabinet GTI CVX-3052
To minimize factors effect in color assessment by visual and adapt with Graphic Technology and Photography – Viewing conditions ISO 3664:2009 and GMI standard
To measure – control – manage color characteristics as L*a*b, ∆E, Density, Dot gain, Contrast and minimize factors effect in color assessment by visual from development to mass production.
And to comply with GMI standard and ISO 12647-2:2013.
To measure and control color characteristics in efficiency way, color characteristics as L*a*b, ∆E, Density, Dot gain, Contrast could be measured in one time of scan.
This machine combine with color adjustment software can adjust direct in machine without operator adjustment