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Kaolin 6000mesh K-90 Super Fine Clay for Paper Coating

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Verified Exporter
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Industry Leader
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CN Supplier
12 YRS
12 YRS
Kaolin 6000mesh K-90 Super Fine Clay for Paper Coating Kaolin 6000mesh K-90 Super Fine Clay for Paper Coating Kaolin 6000mesh K-90 Super Fine Clay for Paper Coating

Product Overview
K-90 represents an advanced grade of fine calcined kaolin specifically engineered for high-performance paper coating applications. This anhydrous aluminum silicate (Al₂SiO₅) powder undergoes precise thermal treatment and particle size optimization to deliver exceptional optical and printing performance characteristics in paper manufacturing processes.

Manufacturing Process

  • Controlled calcination at 1000-1100°C for optimal crystal structure development

  • Multi-stage air classification achieving precise particle size distribution

  • Advanced surface modification for enhanced fiber bonding

  • Continuous quality monitoring throughout production

Key Technical Specifications

  • Whiteness Index: 95-97% (ISO brightness)

  • Particle Size Distribution:

    • D50: 0.8-1.2μm

    • D90: <3.5μm

    • +325 Mesh: ≤0.005%

  • Viscosity: 300-500 cP (60% solids)

  • Specific Surface Area: 15-20 m²/g (BET method)

  • Refractive Index: 1.62

Chemical Composition

  • SiO₂: 52-54%

  • Al₂O₃: 44-46%

  • Fe₂O₃: ≤0.3%

  • TiO₂: ≤0.2%

  • LOI (1000°C): ≤0.5%

Performance Benefits in Paper Manufacturing

  • Optical Enhancement:

    • Increases sheet brightness by 3-5 points

    • Improves opacity by 15-20%

    • Enhances surface smoothness (PPS ≤1.0μm)

  • Printing Performance:

    • 20-30% improvement in ink receptivity

    • Reduced print mottle and picking

    • Excellent dot reproduction (150-200 lpi)

  • Process Advantages:

    • High shear stability in coating color

    • Excellent water retention properties

    • Reduced dusting during converting

Technical Comparison with Conventional Fillers
| Property | K-90 | Standard Kaolin | GCC |
|----------|------|----------------|-----|
| Brightness Improvement | +4.5 | +2.0 | +1.5 |
| Opacity Enhancement | +18% | +10% | +8% |
| Ink Absorption | Excellent | Good | Fair |
| Coating Viscosity | Optimal | High | Low |
| Cost-Performance Ratio | Superior | Good | Moderate |

Mechanism of Action

  • Plate-like particle structure creates optimal light scattering

  • Surface chemistry promotes uniform ink film formation

  • Particle size distribution ensures smooth coating layer

  • High purity minimizes interference with optical brighteners

Recommended Application Parameters

  • Coating Formulations: 20-40% by weight

  • Base Paper Types: LWC, MWC, Art papers

  • Coating Weight: 8-15 gsm per side

  • Binder Systems: Compatible with SB latex, starch, PVOH

Sustainability Features

  • 20% reduction in energy consumption versus alternative processes

  • Enables reduced fiber content without quality compromise

  • REACH compliant

  • Biodegradable and non-toxic

Quality Assurance

  • ISO 9001:2015 certified production

  • ISO 14001 environmental management

  • Batch-specific quality certificates

  • Full traceability from mine to product

Packaging & Logistics

  • 1-ton bulk bags with moisture barrier

  • 25kg multi-wall paper bags

  • Dedicated paper-grade silo trucks

  • 24-month shelf life in controlled conditions

Technical Support Services

  • Coating color formulation assistance

  • Pilot coating trials available

  • Printability testing protocols

  • Mill troubleshooting support

K-90 calcined kaolin has become the material of choice for paper manufacturers seeking to optimize both quality and production efficiency. Its unique combination of optical properties, printing performance, and process characteristics makes it particularly valuable in today's competitive paper markets where premium quality and sustainability are key differentiators. Ongoing technical support ensures optimal implementation for each specific application requirement.

Item Unit Spacification
Brightness R457,% 93 min
Particle size -10 μm 86 ± 3(-2 μm)
Oil absorption g/100g 66 ± 4
Screen residue 325mesh % 0.005
PH value / 6.0-7.5
Moisture kg/L 0.8
Volume density g/cm³ 0.35-0.55
True density g/cm³ 2.65-2.75

TDD-Global.com is a professional China chemical B2B marketplace operated by IBI Company, dedicated to promoting global communication, business negotiation, and market expansion in the chemical industry. With a strong network of China chemical product suppliers and international buyers, TDD-Global creates a dynamic and efficient platform for sourcing, trading, and cooperation.

 

Under the brand name TUDUODUO, TDD-Global has built a trusted reputation among suppliers and buyers in sectors such as fine chemicals, raw materials, industrial additives, and advanced chemical solutions. We offer a wide range of services including product listing, online promotion, supply chain solutions, and international marketing support.

 

Our platform connects hundreds of verified China chemical suppliers with buyers worldwide, fostering transparent transactions, better business opportunities, and high-value partnerships. Whether you are looking for bulk commodities, specialty chemicals, or customized procurement services, TDD-Global is your go-to platform.

 

Driven by the innovative spirit of IBI Company, we are committed to building a smarter, faster, and more reliable global chemical trade ecosystem.

 

If you are interested in cooperation, strategic partnerships, or customized chemical sourcing, please feel free to contact us. Let's shape the future of the chemical industry together!

 

Company Overview
B2B cross-border e-commerce platform and the core subsidiary of Guolian Co., Ltd. (603613. Sh). Specialized in raw material&industrial products for more than 20 years and provide wholesale products for customers worldwide. Now the main running industry chain contains: Pigment industry chain, Titanium industry chain, solvent industry chain, resin industry chain, lubricating oil industry chain, carbon black industry chain, packaging industry chain, medical industry chain etc.
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Basic Information
Company Name Beijing TDD E-commerce Co., Ltd Country/Region China
Business Type Online Store Company Size 2000
Established December 18, 2014
Address Building No.3, Area 6, No.188, West of South Forth Ring Rd, Beijing, China
Main Products PVC Resin‬ , ‪PP‬ , ‪PE‬ , ‪Pet‬ , ‪Titanium Dioxide‬ , ‪Pigment‬ , ‪Car Tire‬
International Commercial Terms(Incoterms): FOB, CFR, CIF, FCA
Terms of Payment: LC, T/T, D/P
Average Lead Time: Peak Season Lead Time: one month, Off Season Lead Time: within 15 workdays
Number of Foreign Trading Staff: 20~40 People
Main Markets: Southeast Asia, Africa, Mid East
Nearest Port: Tianjin,Qingdao,Shanghai
Import & Export Mode: Have Own Export License
Company Introduction
About Beijing United Information Technology Co., Ltd. 

 

Beijing United Information Technology Co., Ltd. (Stock Code: 603613. SH), founded in 2002 and listed on the Main Board in July 2019, is mainly engaged in industrial e-commerce and industrial Internet platforms. Based on industrial e-commerce and supported by industrial big data and industrial digitalization, the company provides online commodity trading, business information services and digital technology services of industrial products and raw materials for related industries. In terms of business model, it is called "the industrial version of Pinduoduo" and "the industrial version of JD.com".

 

 

About Beijing TDD E-commerce Co., Ltd. 

Beijing TDD E-commerce Co., Ltd. (shortly named TDD Global) is the core subsidiary of Guolian Corporation (Stock Code: 603613.SH) and the first industrial Internetplatform of Duoduo Series Platforms. The company mainly engages in B28 e-commerce transaction serices of raw material and industrial products, digital supply chain serices, industrial digitalization serices and industrial big data serices, and is committed to promoting the deep integration of traditional industries and new technologies such as the Internet, Internet of Things, big data, intelligent manufacturing and block chain, etc.

 

Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of quot&quality first, customer first and credit-based"Since the establishment of the company and always do our best to satisfy potential needs of our customers.

 

Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with an irresistible force.


Our Advantages:

Rich Experience-over 20 years in industry field

Ranges of products categories with quality guarantee

Competitive&Favourable price

7*24hours thoughtful pre-sale, on-sale, after-sale service

Overseas warehouse with all time delivery

Our services:

In order to better satisfy our customers worldwide and maintain regular customers. Our company takes raw material&industrial product B2B e-commerce transaction service, digital supply chain service, industry digitization service and industry data service as it′s primary business, focusing on promoting the deep integration between new technology and traditional industry, such as Internet, Internet of things, big data, intelligent manufacturing and blockchain.

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Negotiable
20 Tons (Min.Order)
Kaolin 6000mesh K-90: Extra-fine kaolin used in advanced applications, offering exceptional brightness and smoothness for cosmetic and pharmaceutical products.
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