The
Coated Board Making Process
The Process of coated board making at Khanna Paper Mills involves
various phases & steps of converting Raw Material into a Finished
Product. The various phases involved during this process could
be summarized as :
- RAW
MATERIAL & PULP MAKING
- SHEET
FORMING
- PRESSING
& DRYING
- COATING
& FINISHING
- CONVERTING
& PACKING
Applications: Coated Board of different QUALITY,
different GSM and GRADE can be used for various purposes like
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For Readymade Garment Carton, Book Covers
& Pharmaceutical Boxes |
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For Printing Playing cards, Note Book Covers etc. |
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For high speed printing machine for quality jobs |
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For high speed printing machine used for Carton Printing
job such as Tea, Toothpaste & Note Book Covers etc. |
1. RAW MATERIAL & PULP MAKING: Waste
recycled paper is used in manufacturing paperboard in our plant.
As white and Grey pulp is used to manufacture paperboard, therefore
we have two main pulp preparation systems for white & grey pulp.
The white pulp is made from imported good variety of mixed office
waste in world-class De-inking plan. We have adopted latest
International standard higher technology to manufacture pulp
of brightness, strength and cleanliness. The De-inking plant
comprises of high-density pulper, cleaners, screens, floatation
cell, disperser and bleaching. The purpose from ink particles
and other impurities.
2.
SHEET FORMING: Looking to the quality demand and consumer
requirement, our total product range is manufactured on seven
cylinder formers. The main composition of our baseboard is given
below: The white and grey pulp manufactured from different process
treated in four streets to make suitable for above four layers.
Chemicals & additives added as per different quality requirement
and "stock" is pumped to different formers to make board sheet
called "web". The web formed at different formers couched off
and adhered together and form the complete board sheet.
3. PRESSING & DRYING:
Board web formed at forming section carried by a felt
called “making felt” to the press part. The double
felted processes remove water from the web. After squeezing
maximum water from the web from press part, sheet enters the
dryer section where with the help of steam heated drying cylinders
water from sheet is being evaporated. In drying section, big
drying cylinder called M.G. enhances glaze on the topside of
the board.
4. COATING
& FINISHING: Prior to pigment coating to enhance coating
hold out, the surface sizing is done on both sides of the board
at size press with special quality imported starch. Though we
have three stage coating section, we operate them depending
upon end uses and grade requirement. The main purpose of pigment
coating is to get better look and printing properties of top
surface of the board. To meet above requirement, we include
world-class pigment and binder in our coating formulation. To
enhance gloss and smoothness we have steel calendar followed
by brush rolls.
5. CONVERTING
& PACKING: We have winder and cutter to meet market
requirement. The sheet reams are packed with high B.F. Kraft
and bundled in HDPE. The reel packing is in Kraft along with
edge protector and HDPE.
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