Pasting Gum Powder

Viscosity :

Viscosity to be checked on Ford Cup No. 4 –

• (40 Kg Bag) 1 : 4 water mixing ratio Visc. 30 to 35, solids 20 %
• (35 Kg Bag) 1 : 5 water mixing ratio Visc. 30 to 35, solids 17 %
• (30 Kg Bag) 1 : 6 water mixing ratio Visc. 30 to 35,solids 14.5%

Preservatives : Preservatives have already been added to Grodex TiO and therefore do not add any preservatives in it. Addition of preservatives may reduce viscosity and adhesion of the liquid gum.
Anti Fungus :

• The product has been given anti fungus treatment in the manufacturing process itself and therefore actual users are requested not to add any Anti Fungus Chemicals to it.
• Such addition may reduce viscosity and Pin Adhesion of the gum.

How to Prepare :

• First take entire 4/5/6 units of water in a vessel mounted by High speed stirrer. Start stirrer and add gradual flow of grodex TiO powder to it.
• Do not put entire 1 unit of powder at a time to avoid lumps formation. After putting 1 unit of pasting powder in to the water,make sure that there is no lumps formation and entire powder hasbeen dissolved in to water. You will get a Milky white solution from it.
• Take 5 Ltrs of Water in a bucket and add entire starter chemical packet in it. Dissolve it completely in water. Add that starter mixed 5 Ltr Water in the milky white solution slowly. Continue stirring.Unless liquid changes its color to shining Radish Brown
• Continuestirring for at least 25 to 30 minutes to get maximum solids percent and desired 30 to 35 sec viscosity. Ensure viscosity on B-4 cup as 30 to 35 seconds. Check Solids.

Better Results :
For faster drying / curing of sheets, Low warpage, more B/S,More compression and better feel to bare hands, etc. always prefer To work with high solids and low viscosity.
Drying & Plasticization Moisture Regain etc : This is alkaline gum. Caustic is used in this gum as a catalyst. Caustic is hygroscopic and has a tendency to catch moisture even from open air.

Therefore boxes made of alkaline gum will have tendency to catch moisture even though dried completely in the manufacturing process. Such boxes are likely to catch moisture under following circumstances :

• If Boxes are kept in Deep Fridge where humidity rises.
• If Boxes are kept uncovered in rainy conditions.
• In High seas/containers (Exports) where humidity goes too high.

Addition of moisture after actual packing of final finished goods in it,will cause lower compression. Boxes are likely to collapse resulting in damage to packed finished goods in it.
If box regains moisture, it may cause fungus growth on the surface of the box, as humid surface creates conjugal atmosphere for fungus growth.
To avoid this problem you can use Dextrin based neutral gum powders which do not catch moisture on complete drying,in any weather conditions.
Grodex C/P neutral : Humectants used in the Grodex C/P neutral pasting gum slow the drying rate of the film, to allow a more plastic film.This gum is basically used for moisture or humidity control and therefore sufficient time is required to be given to dry down and allow maximum plasticization. In a rainy season or in a highly humid climatic condition allow pasted sheets for at least 24 to 36 hours to dry down to allow maximum plastic film formation.
Note : All above information is based on findings in our laboratory and results may vary at the actual floor level at the time of its consumption, depending upon hardness of water, heat and humidity in the atmosphere, cleanliness of the gum vessel, gum trey and gum roller.