Chemicals Paper Industry

Emerging Excellence in Paper and Board

We are the leading solutions provider to paper process systems to improve product quality and operating and production efficiencies. Ezochem has been successful in meeting the challenges of producing paper with proper sheet quality at optimum cost. we offers the entire spectrum of performance paper chemicals formulated to enhance the physical attributes of the paper products from coagulants, flocculants, wet & dry strength resins, internal alkaline sizes, surface sizes and box board coatings, to specialty products such as charge modifiers and anionic trash collectors.

Ezochem product line offers a comprehensive portfolio of products and services meeting the specific needs of the manufacturing processes, using both virgin and recycled fibres.

Our products range:

Anionic trash fixing agents

Trash represents anionic, dissolved or colloidal oligomers or polymers and/or non ionic hydrocolloids.

Trash causes -
a) Impairments of pulp beating/refining
b) Higher quantity of deposits
c) Deterioration of retention, drainage and sheet formation
d) Deterioration of paper quality characteristics such as tensile strength, opacity, whiteness etc.

Ezochem's range of Trash fixers are very highly charged organic cationic polymers synthesized in controlled conditions so as to achieve optimum neutralization of anionic trash.

Drainage aids

Drainage aids are linear very high molecular weight, Copolymers of acrylamide and acrylic acid/cationic monomers. These products are structured copolymers of acrylamide for better paper formation and have excellent solubility and negligible gel content.
The basic purpose of these products is to improve drainage and therefore reduce water content in the paper web, resulting in -
a) Saving of thermal energy/ steam required for drying of the paper
b) Possibility of increasing machine speed.

Dry strength additive

Due to shortage of softwood and the replacement by hardwood as well as the strongly increased consumption of waste paper as a secondary fibre source deterioration in paper strength are inevitable. Further strength reducing factors are lower single fibre strength that were caused by chemical or mechanical damage. A further factor is a bad fibre to fibre binding.
Dry Strength Additives are synthetic organic polymer derivatives. They strengthen and multiply the binding between fibres and fibres as well as fibres and fillers and therefore, improve the structure in paper.
The ADVANTAGES are improved strength properties of paper & paper board viz. breaking length, stiffness, burst as well as ply bond strength. An improvement in Retention is a desired side effect. Different grades of products have been developed for acid, neutral and alkaline paper making.

Coagulants

Presently conventional coagulants (i.e. salts of Aluminium or Iron) are used to precipitate dissolved solids and also to settle suspended matter in many effluent treatment plants. These pose problems of carry over finely divided flocs of aluminum hydroxide or ferric hydroxide into the clarified water and produce bulky sludge having a high water content. This increases the sludge handling and disposal costs.
Due to drop in pH on use of these coagulants, often further chemicals are needed to counter the effect.
EZO-FIX range of coagulants for industrial waste water treatment consists of 'nontoxic' cationic polymers which replace inorganic coagulants (viz Alum, PAC, Lime, Ferric salts) and also reduce cost of treatment.

Numerous other benefits include -
a)Reduction in sludge volume and desludge frequency.
b) Reduced sulphate/ chlorides in the treated effluent and negligible drop in pH of treated water.
c) Reduction in corrosion in coagulant addition pipeline and pump.
d) Savings in labour and electricity costs

Retention aids

Retention aids bind fillers and fines to the fibre so they can be retained in the sheet. If the fillers and fines are not retained with the sheet, they pass through the wire, where they create collection, disposal, and deposit problems. Retention aids also fix dyes to the sheet.
Retention mechanism is mainly by reduction or neutralization of the surface negative charge of colloidal particle, fillers and fibres thereby enabling them to coagulate and aggregate on to large fibres by bridge formation.
EZOCHEM's Retention and Drainage Aid Product Line consists large number of products in powder and emulsion forms for optimal working in a system.
Product Charge
a) Anionic - medium & low
b) Cationic - high, medium & low
The working pH range is 4 to 9 and apart from increasing the First pass retention, these products also help increase the ash content in paper resulting in reduced cost of paper making.

De-inking

It helps in removing various inks from cellulose fibre without damaging its chain. It prevents redeposition of ink on the cellulose fibre and is compatible with alkali, alkaline silicates and peroxides which are usually incorporated during deinking process. There is no colour reversion of finished paper.

De-foamers

Surface active agents added in the process of boiling of wood or pulp cause foam. The degree of foam formation depends on the type & speed of machine, nature of pulp, pH etc.
EZOCHEM's de-foamers are developed with a view to reduce surface tension at the liquid to air surface and thus eliminate foam. The type and quantity of de-foamer to be used would depend on the quality of foam, pH of the medium etc.

Coagulants for Raw water treatment

Presently conventional coagulants (i.e. salts of Aluminium or Iron) are used to remove turbidity in water. These pose problems of carry over finely divided flocs of aluminum hydroxide or ferric hydroxide into the clarified water and also produce bulky sludge having a high water content.
During monsoon season when turbidity suddenly increases, numerous problems are faced in treatment of water with conventional chemicals e.g. Alum and Lime.
EZOCHEM's range of coagulants for industrial raw water treatment consists of 'nontoxic' cationic polymers which replace inorganic coagulants (viz Alum, lime, Ferric salts) and also reduce cost of treatment. 

Numerous other benefits include -

a) Reduction in sludge volume and desludge frequency.
b) Reduction in Aluminium ion carryover which is a health hazard.
c) Reduced load on DM plant and negligible drop in pH of treated water.
d) Reduction in corrosion in alum addition pipeline and pump.
e) Automated dosing & controlling of turbidity and suspended solids in plants.
f) Savings in labour and electricity costs.
g) Reduced requirement for storage space.
 h) Colour removal application.

EZOCHEM's range of polymer is used to decolourise effluents containing anionic, direct or reactive dyes. It is a liquid product, therefore easy to handle and is suitable for use in dyehouses and in municipal biological sewage treatment plants. It is Compatible with the usual inorganic and organic precipitants.

Wet Strength Resins

wet strength resins are genarally used in paper towels and Tissue.
Applications for wet-strength resins include paper towels, weather resistant packaging, milk cartons, frozen food packages and vegetable boxes. Products requiring immersion in water such as photographic paper, filter paper and etc.

Coating Chemicals 

Melamine-Formaldehyde (MF) resins: MF resins are aqueous solutions of rather low molecular condensation products of formaldehyde and melamine, in many cases modified with certain additives.
These resins are characterised by 55-60% solid content, a low viscosity (15-27 DIN 4 sec.) and a colourless and clear appearance.
MF resins are applied for paper impregnation; thereby resin penetrates into the paper and through a combined thermal pressing and curing process a composite of paper and polymer with excellent surface properties can be produced.
Decorative and overlay papers (also fortified), filled with melamine resin, are used for the lamination on particle boards or similar.
To improve the large number of surface properties (flexibility, transparency,..) and to improve the impregnation and the lamination process, modifications of the melamine resins with different types of additives is very important.