SURFACE SIZING
Product Characteristics
| PRODUCT | P SIZEX – 25 |
|---|---|
| Solids content (DIN ISO 1625-D) | 27% |
| Ionic charge | Anionic |
| Chemical Nature | Styrene acrylate dispersed emulsion |
| Physical Form | Mobile, yellow brownish dispersion |
| Physical Form | Liquid White dispersion |
Product Characteristics
| PRODUCT | P SIZEX – 28 |
|---|---|
| Solids content (DIN ISO 1625-D) | 30 + -1% |
| Ionic charge | Cationic |
| pH | 4.0±1 |
| Appearance | White to Brownish Liquid |
| Shelf Life | 6 months |
Food Contact Applications
P-SIZEX-28 is extremely low-foaming, and no special antifoams are usually required.
P-SIZEX-28 cures completely during drying. Cylinder temperatures of around 90°C are sufficient for it to cure.
The composition of P-SIZEX-28 conforms to the requirements of the legislation listed below.German health authorities’
recommendations on paper and board for food packaging (Empfehlung XXXVI, Papiere, Kartons und Pappen für den
Lebensmittelkontakt), according to current status. United States Food and Drug Administration regulations: FDA 21 CFR.
176.170 (b) “Components of paper and paperboard
in contact with aque-ous and fatty foods”, 21 CFR 175.105 “Adhesives” and 21 CFR 176.180
Components of paper and paperboard in contact with dry food”, accord-ing to current status.
Restrictions in the above legislation on migration levels, etc., must be observed.
Material compatibility
The suitable materials for storage and handling are stainless steel, Polyester (e.g. Palatal® A410), PVC, Polyethylene (e.g. Lupolen®) or Polypropylene.
Product Characteristics
| PRODUCT | P SIZEX – 30 |
|---|---|
| Solids content (DIN ISO 1625-D) | 30±1% |
| Ionic charge | Cationic |
| pH | 4.0±1 |
| Chemical Nature | Styrene acrylate dispersed emulsion |
| Physical Form | Liquid White dispersion |
Technical Specification Sheet
It is compatible with the non-ionic and anionic auxiliaries that are applied to paper in the size press/metering size press.
P SIZEX has no detrimental effects on brightness, and it does not impair the fluorescent activity of optical brighteners.
Compatibility
P SIZEX can be combined with starch, direct dyes, acid dyes, fluorescent brighteners and other anionic and non-ionic substances, but it is always advisable to take the precaution of testing its compatibility in advance.
Application
P SIZEX is usually applied in the size press / metering size press in combination with starch, but it can also simply be diluted
with water. It can be added in batches or continuously, the latter method being more versatile in that it enables levels of addition
to be adjusted more quickly as circumstances demand.
The paper does not necessarily have to be sized at the wet end before P SIZEX is applied, but this can be an effective means
of controlling the extent to which the size solution is able to penetrate.
The recommended concentration 30 grm / Tonne and 20 kg / tonne paper of P SIZEX are required for hard-sized paper, if it is applied on size press in water, depending on factors such as whether any size is added at the wet end, etc.