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cElITE® ANTIblock mineRAl Additives FoR the PlAstiC Film indUstRy

CELITE ANTIBLOCK IN POLYETHYLENE FILM & OTHER PERFORMANCE PLASTICS

P High Gloss

P Low Haze

P Clarity

P Antiblocking

P Efficient and Versatile

P Minimum Loading

TYPIcAl ScANNINg ElEcTRoN

MIcRogRAPhS

Super Floss®

Super Floss®MX

Micro-ken® 801

PRovEN PRodUCts

PRovEN PRoducTS

Celite functional additives have been

used for antiblocking in polyethylene

film for over 50 years. Antiblock additives

reduce the tendency of thermoplastic film

to adhere when compounded as plastic

packaging or tightly wound rolls.

Films containing Celite antiblock additives exhibit

exceptional clarity. A range of products with different

particle sizes and shapes is available to optimize efficiency

and cost effectiveness.

the original grade of Celite antiblock was Super Floss®.

Super Floss is still the preferred grade and is recommended

for most film applications. Super-Fine Super Floss® is

the grade to consider if your application requires a fine

or narrower particle size distribution. Micro-Ken® 801,

White Mist® PF, Super Floss MX, Super Floss A and

Super Floss E complete the product line.

coMPouNdEd INTo MoRE ThAN 600 bIllIoN PouNdS oF FIlM

x superior block / reblock

x low interactions

x high clarity

x low additions

x For ldPe, lldPe, mlldPe, PP, evA, tPU

FEATuRES ANd bENEFITS

Celite diatomaceous earth antiblock additives exhibit

minimal interactions with other additives in most ldPe

and lldPe resin systems. this assures that the optimal

amount of processing aids and other organic additives

are used.

Addition rates as low as 2,000 ppm provide significant

reductions in block/re-block forces. this efficiency results

from the unique, irregular particle shapes of the diatoms.

MINIMAl INTERAcTIoNS with otheR Additives

Celite additives offer superior economic performance in

higher alpha olefin lldPe systems in which synthetic silica

might otherwise be specified. one study, presented by a

leading resin producer at AnteC ‘99, showed the statistical

equivalence of super Floss to synthetic silica in a 1-octene

lldPe system.

New product Super Floss MX

A primary objective of our R&d efforts is a continuing

product development program, directed at enhancing

product performance and assuring multi-plant sources to a

growing worldwide market. the latest result of this intense

effort is the successful introduction of Super Floss MX in

north America, and further significant breakthroughs in

antiblock technology are on the horizon.

ANTIblock bASIcS ANd APPlIcATIoNS

the theory of antiblocking is that varied particle shapes of

diatomite particles protrude from, or are at the surface of,

the polyethylene film.

the irregular shaped particles of Celite diatomite silica

are extremely efficient for this application in all types

of polyolefin films including lldPe, metallocene Pe and

polypropylene. depending on the type of resin used to make

the film and the end use application, the amount of Celite

antiblock required usually ranges from 0.2% to 0.5% by

weight of the resin.

due to the critical nature of incorporating a solid into a

solid plastic film, Celite products meet exacting quality

control standards. this allows the end user to be assured

of a consistent quality antiblock additive batch after batch.

Many applications

in addition to traditional applications in film, Celite

additives are used in a wide variety of plastic, plastomer

and compounded polymer systems:

- Antiblocking, prevention of plate out and gloss

control in PvC sheets

- silica nucleation site for polyurethane

- Reinforcement and dimensional stability in siloxane

(Rtv) and extension of the pyrogenic silica

- mold release and gloss/sheen control of various other

resin systems

celite antiblocking additives added to the resin formulation of plastic film create a micro-rough surface to keep the layers from sticking together (blocking).

cElITE® AntiBloCk the indUstRy STANDARD

GRADES AND TYPICAL PROPERTIES

Color

Grade Median particle size,

microns

Brightness (blue light)

Hunter b value (dry)

Hunter b value (wet)

Refractive index

Moisture, % (as shipped)

Specific gravity

Super-Fine Super Floss® 5.2 90 <2 4.2 1.48 <0.5 2.3

Super Floss® 7.5 89 2 4.7 1.48 <0.5 2.3

White Mist® PF 9.0 89 <2 5.3 1.48 <0.5 2.3

Micro-Ken® 801 15.0 91 3 9.0 1.45 <0.5 2.3

Super Floss® MX 10.5 91 <2 3.5 1.48 <0.5 2.3

Super Floss® E 12.2 92 <2 4.8 1.48 <0.5 2.3

MAjOR ELEMENTAL CHEMISTRY (WEIGHT PERCENT)

Grade SiO2 Al2O3 Na2O + K2O Fe2O3 CaO MgO

Super-Fine Super Floss® 91.6 2.7 3.3 0.9 0.1 0.6

Super Floss® 91.6 2.7 3.3 0.9 0.1 0.6

White Mist® PF 91.8 3.2 2.9 1.0 0.6 0.5

Micro-Ken® 801 92.0 1.5 2.7 1.2 0.3 0.6

Super Floss® MX 91.9 2.5 3.3 1.1 0.4 0.5

Super Floss® E 91.0 0.6 0.9 0.2 7.1 0.2

tyPiCAl PhysiCAl And ChemiCAl PRoPeRtiesAll data are typical, or estimated, and are not to be used as specifications.

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PARtiCle size distRiBUtion | For Antiblock AdditivesThe charts below show the cumulative and differential particle size distributions of each celite antiblock additive grade. These particle size distributions represent typical, average values obtained from a laser particle size analyzer using standard test methods.

Cumulative Size Distribution

Particle Size (microns), Log Scale

Volu

me

% U

nder

size

100 10 1

100

90

80

70

60

50

40

30

20

10

0

Super-Fine Super FlossSuper Floss ESuper Floss

White Mist PFMicro-Ken 801Super Floss MX

Grade

Particle Size (microns), Log Scale

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0100 10 1

Diff

eren

tial V

olum

e %

Differential Size Distribution

Super-Fine Super FlossSuper Floss ESuper Floss

White Mist PFMicro-Ken 801Super Floss MX

Grade

Celite ANTIBLOCK – Polyethylene Film Additives

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IMERYS Filtration & Additives1732 north First street, suite 450 san Jose, CA 95112 UsAt: +1 805-562-0200 e: info@imerys-filtration.com

www.imerys-filtration.com

ToTAl PRoducT SuPPoRT imeRys is the

largest producer of diatomite products in the

world. our products offer consistently high

quality, worldwide sources of supply, superior

technical support, and unsurpassed customer

service.

NEw PRoducT dEvEloPMENT our

extensive Research and Applications department

is continually seeking to develop new products to

assist manufacturers in achieving the maximum

functionality and quality in their products.

PAckAgINg & dISTRIbuTIoN Celite products

are available on a direct basis and through our

international network of authorized distributors.

to meet the specific needs of our customers,

antiblock and additive products are packaged in

44-lb. polyethylene, 50-lb. paper, and FiBC bags.

FoR AddITIoNAl INFoRMATIoN For more

information on our mineral additive products, or

to locate a distributor near you, please contact

us at www.imerys-filtration.com.

we take a scientific approach, providing clear solutions... to our customer’s plastic film needs.