Kaolin is used as a coating in paper to enhance glossiness and opacity, and to improve the printability.
Kaolin is the most extensively used additive in the manufacturing of paper, primarily as a filler and coating. Kaolin is combined with wood pulp or fiber to generate substantially more paper filler, and thus more paper. It is a cost effective alternative to all wood paper filler, which has become more expensive as demand for paper increases and supply of wood decreases. Kaolin’s primary competition in fillers is calcium carbonate which, though more affordable, has less dramatic results. The particle size of kaolin plays an important role in fillers and coatings as larger particles provide added strength to paper. Kaolin coatings improve paper appearance, giving it varying degrees of gloss, smoothness, brightness, opacity and most importantly printability. Three aspects of kaolin that shape these characteristics are purity, rheology and particle geometry. Kaolin improves printability by providing added ink absorption, ink pigment holdout, lowering linting tendency and increasing roughness.
Starch application in manufacture of paper dates back to the invention of paper. Modified starch is an additive prepared by treating starch or starch granules, causing the starch to be partially degraded. For mineral filler containing grades of paper, starch is the highest volume raw material after water, fibres, and the fillers used for manufacturing paper worldwide. Starch provides functional properties to the paper and works as a process aid as well. While starch was traditionally used as a dry strength and surface improvement aid, in alkaline papermaking, starch is a critical part of the wet-end sizing and with micro-particle retention systems, starch is an integral part of the wet-end retention system. Surface starch also works as a binder, water holding agent, and priming coating for the surface sizing chemicals and other functional additives.
The significant properties of EICL kaolin such as controlled particle size distribution, platy particle shape, low viscosity and non-abrasiveness enable the usage of Kaolin in paper filling and coating application. The regular grades are used as filler and for precoats enhancing the opacity and whitenes and providing the right basics to build on. The fine hydrous kaolin are used for premium paper coating application delivering excellent print characteristics and rheology.
Our starch-based solutions are ideal for paper and board industry. Our products provide
- Cationic starch for internal sizing DS upto 0.07
- High DS cationic starch with altered viscosity for ASA & AKD emulsion
- Oxidised starch having good film forming properties
- Substituted Oxidised starch with flexible film properties
- Low gel temperature very high viscose spray starch
- Partial replacer of SBR latex having very high water retention property
Hibrite – As an efficient coating pigment in high gloss papers
KCG L – As a filler in Newsprint / Writing & Printing Paper to impart very good opacity
KCG P – As a coating pigment in the manufacture of coated papers and boards and also as a
filler or loading material
Himacot- Ideal pigment for pre coat application, imparts very high opacity and improves printability & ink absorption of coated paper
BCK – As an efficient coating pigment in the manufacture of speciality papers.
DLC 80- Light coating
DLC 90- Lightweight coating
High gloss – As a superior coating pigment in the manufacture of speciality papers and paperboards
Super coat - Top coat in Boards, Paper
SG 90 – Top coat in Boards, Paper
Super gloss – Top coat in Boards, Paper
Himafil – Paper filling
Himafine – Top coat in boards
Amylofloc – High DS cationic starch with altered viscosity for ASA & AKD emulsion in wet end application for paper industry
Amylogum C - Modified Starch used as partial replacer of SBR latex having very high water retention property in paper coating
Amylogyp 10- Gypsum Board Binder; Excellent binder, fast curing, no stain on surface
Amyloplast 10 – Oxidised starch having good film forming properties for surface sizing in paper industry
Fibreloc – Cationic starch for internal sizing in paper industry
Fibreloc T-65 - Wet-end application for paper industry
Superbond - Modified starch-based product suitable for paper and paperboard industry
Superbond M-55- Low gel temperature very high viscose spray starch for multiwall paper board
Synthosize – Substituted Oxidised starch with flexible film properties for surface sizing in paper industry
BCK L – As an efficient pre-coating pigment in the manufacture of duplex board
BCK SD – As an opacifying filler and for precoating in paper and Board applications, to improve the printability
Centrex 60 – The controlled particle size makes it suitable as an efficient filler in writing and printing paper making and duplex board manufacturing.
KCG SD – As filler in paper making and in coating as precoat in duplex board.