Epygen Enzymes are specially designed to enhance swelling & fibrillation of fiber and partially hydrolyze ultra fines. By encouraging fibrillation in Virgin Pulp and restoring microfibrils in Recycled pulp, better paper properties can be obtained with improved machine runnability and reduced impurities in secondary fiber. Less fine generation results in better drainage.

By modifying inherent fiber properties, PAPYRASE RF enzymes can help paper maker to

• Use inexpensive raw material or increase filler loading
• Substantially save refining power and steam
• Reduce stickies, hence control paper breaks and down time
• Improve Drainage of slow stock and better machine speed
• Improve overall productivity of machine

Neutral Deinking of Recycled waste paper using Epygen Hemicellulase, can considerably reduce the need for harsh chemicals like Caustic Soda and Peroxide, without compromising paper quality. Special inks like Laser or Polymeric inks bind with fibre so tightly that it is often not possible to disperse these with conventional chemicals, without damaging fiber. Epygen PAPYRASE IL allows the secondary fiber structure to loosen up, releasing the embedded ink with reduced usage of Alkali and Detergents.

Benefits include the following:

• Improved pulp cleanliness and dirt count.
• Substantial cost reduction in terms of pulping chemicals.
• Improved operation of the grey water loops.
• Less risk of unwanted deposits.
• Brighter final pulp.
• Improved paper machine runnability.
• Reduced Dusting, improved bulk and softness in tissues.

PAPYRASE^® DL is a biodegradable surface-active agent, having diverse compounds. It is blended with Enzyme bio-systems to shorten the Lag Phase of Enzymatic Hydrolysis. It can be used in both Pulping and Floatation stages depending on process need.

Benefits include the following:

• Higher gain of optical Brightness through improved foam formation.
• Improved reduction in ERIC values/Dirt count through better foam formation
• Reduction/complete replacement of Sodium fatty acid soap in De-inking Chemicals.

Deposits in paper making process comprises of various sticky materials, which may originate from inks or adhesive material in recycled paper (STICKIES) in deinking process. PAPYRASE LIL will hydrolyze ester bonds of the surface of hydrophobic materials and will modify into hydrophilic and less sticky component, while simultaneously loosening up the sticky-fiber adhesion.

Application of Papyrase LIL would provide following benefits:

• Improved runnabilty at machine and at winder
• Reduced sheet defects
• Elimination or reduction of other stickies control chemicals.

PAPYRASE DN is a combination of specially developed Hemicellulase and Esterase Enzymes to modify cellulosic fiber and dislodge Ink and Dirt from waste paper, particularly from ONP. ONP made from 100% mechanical pulp (TMP) would provide plenty of opportunities for alkali consuming reactions to take place between lignin/hemicelluloses, resulting Fiber yellowing. On the other hand, PAPYRASE DN would remove Impact ink, which is commonly used in newspaper printing, without addition of caustic, eliminating Fiber yellowing effect. Benefits from Papyrase DN are outlined as below:

• Eliminate Alkali and other De-inking Chemicals from ONP process.
• Improve Optical Brightness.
• Improve printability of Newsprint.
• Reduce pinholes.
• Reduce dusting and stickies.
• Improve machine and winder runnability.

As OCC passes through repeated circulation process of rehydration and drying, the molecular alignment of cellulose chain alters itself, presenting an obstacle for further rehydration. Contaminants such as adhesives, coatings, glues, binders etc., that enter the mill furnish also increases. These materials become incorporated into the pulp slurry and are called “stickies”.
ENZOLASE OCR is a specially developed Lipolytic Hemicellulase Enzyme that would simultaneously control sticky and develop recycled hornified OCC pulp.

• Reduce stickies related breaks at paper machine (dryers & calendrers) and winder.
• Reduce linting/fluff at pre-dryer section.
• Reduce tackiness & agglomeration properties of stickies material and keep in disperse form.
• Improve inter-fiber bonding by enhancing fibrillation.
• Improve swelling of hornified fiber in absence of mechanical refining.
• Improve paper properties like Tensile and Burst.

KEY POTENTIAL BENEFITS:

• Improve paper properties like Burst, RCT, CMT & SCT by better inter-fiber bonding.
• Reduction in size press starch and other chemicals used for strength properties.
• Reduce mechanical Refining Energy requirement.
• Attain better Formation & reduction in dusting/fluff.

Epygen specially designed enzyme PAPYRASE TF will enhance swelling and fibrillation of fiber. Thereby inter-fiber bonding area increases, developing higher tensile at drying section in final tissue, resulting in multiple benefits as follows:

• Soft wood usage can be significantly reduced in furnish mix, while maintaining tensile.
• Refining power can be reduced.
• Improve in Bulk and related tissue properties.
• Attain improved Formation and Softness.
• Reduce dusting.
• Improve Tissue machine and winder runnability.

A component of organic debris can affect Hydrodynamics of mill water, as slow draining stock not only impacts the drying process, it often limits machine speed! A selective hydrolysis of this debris can be achieved by Epygen Drainage Enzymes.

PAPYRASE DR when used as prescribed, will deliver following benefits:

• By selectively hydrolyzing Micro Fines, directly increase pulp freeness.
• Increase pulp drainage on the wire in a predictable manner.
• Create conditions to speed up machine.
• Increased dosage can achieve higher drainage without affecting formation.
• Reduce Drying Steam consumption, on long-term usage.
• Due to better drainage and retention, reduce Wet-end polymers and Drainage-aid.
• Cleans up white water loop and encourages higher recycling of water.

Epygen PAPYRASE HTA is a Concentrated Ultra High Temperature stable Bacterial Alpha Amylase, suitable for conversion of gelatinized starch in the Paper industry. The Enzyme can be most predictably activated and deactivated, controlling the property of starch used in Papermaking. This microbial enzyme will work between temperatures of 60 to 110 Deg C and pH range of 5 to 9 and offer following benefits:

• Eliminate strong and hazardous oxidizing chemicals.
• Safe and easy to handle.
• Low Doses required.
• Suitable for Batch and Continuous conversion.

Complex structure of cellulosic mill effluent makes it impossible to metabolize by microbes. By de-polymerizing and fragmenting long chains of cellulose in Papermill waste water, Papyrase WL enhances bio-reactor efficiency and deliver following benefits;

• Increases BOD/COD ratio by hydrolyzing complex polysaccharides.
• Converts insoluble COD to soluble COD.
• Reduces VFA/alakalinity ratio in anaerobic system.
• Encourages Microbial growth reflected in growth in MLSS.
• Accelerates Bioconversion / Bioremediation.

KEY POTENTIAL BENEFITS:

• Acts as a slushing aid and reduce slushing/pulping time.
• Reduce fibre content of Drum pulper rejects.
• Improve fibre yield and.
• Improve paper strength properties by recovering high strength fibre.
• Eliminate use of caustic, steam, etc. at pulping stage.

By using Epygen’s specially designed recombinant Xylanase functioning at a wide range of Temp & pH, it is possible to obtain a partial hydrolysis of the hemicellulose precipitated onto pulp fibre during alkaline cooking process. This Enzyme loosens the Xylan linkages, rendering Lignin easier to remove by bleaching chemicals. As a result of Papyrase BBL treatment of pulp, it is possible to:

• Attain higher brightness pulp using lesser chlorine or chlorine dioxide.
• Reduce chemical cost.
• Improved fibre properties and reduced AOX levels.
• Conserve fibre by reducing cooking.