30.01.2012

New Generation Calcium Carbonate in

breathable film applications

Gil Morieras Omya International , Switzerland

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

30.01.2012 2

Table of Content

Microporous Breathable Films

Definition

Some historical facts & Market

Size

Asia : A Future Potential market ?

Microporous films

Manufacturing

Film requirements

CaCO3 Requirements

Omyafilm® : A dedicated

product for breathable films

Lab Equipment & Process &

Movie

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Water Barrier Microporous Breathable Films

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2 main aims :

• To permit transmission of air and/or water

vapour

• To provide a barrier to liquids

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Water Barrier Microporous Breathable Films

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Microporous Breathable Films : Examples

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SEM of film surface

x2500 magnification

x2500 magnification cross section

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Some historical facts & Market Size

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Microporous Breathable Films : Applications

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• Hygiene

Infant diapers

Sanitary napkins & panty liners

Adult incontinence products

• Building

Under-tile roofing films

House wraps

Wall and floor covering

• Medical / Clothing

Operating garments

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Asia : A Future Potential Market ?

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Europe

Asia

America

Total

50

100

150

200

250

300

350

400

450

500

Standard Films2009 Microporous Films

2009Standard Films

2012 Microporous Films2012

450490

Axi

s Ti

tle

Tho

usa

nd

sMicroporous Breathable Film Volume 2009 vs. 2012

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Microporous Breathable Films : Manufacturing

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Compounding

• To disperse uniformly 50-70 % of CaCO3 in a polyolefin matrix

• To produce a batch with a very low humidity content

• Not to damage the CaCO3 or polyolefin chains

Extrusion

• To produce a thin film by casting or blowing

Stretching

• MDO Stretching

• CD and MD Tendering unit • Intermeshing or interdigitating Stretching

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Breathable Films Requirements

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• Building Films • Tensile Strength

• Shrinkage

• Hydrostatic Water Pressure

• ASTM E 96

• Depends on

• CaCO3 content

• CaCO3 choice

• Stretching ratio

WVTR Water

Pressure

UV Resistance

Mechanical Properties

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

CaCO3 Requirements

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Hydrophobicity

Thermal Stability

Narrow PSD

Whiteness

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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The Omyafilm® Range of Products

A Solution for all Breathable Film Manufacturers

Raw Material Resources for more than 100 Years

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

OMYAFILM : The Solution to Breathability

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Special surface treatment

• Hydrophobicity

• Dispersion

• Thermal stability

Steep curve of Granulometry • Finer top cut

• Less fines

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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Marble base

Special grinding system

• Whiteness

• Opacity

• Adequate shape

OMYAFILM : The Solution to Breathability

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Grade Comparison

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

D 50 & D 98 Comparison

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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Omya

Lab Equipment for Customer’s Trials

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

30.01.2012 19

This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

Cast Film Line with MDO Stretching Unit

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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This document contains proprietary information which shall not be

used and disclosed without Omya explicit written authorization.

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Thank You