SYLOBLOC® Silica

Antiblocking Additives for High Clarity Film

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SYLOBLOC® Silica Antiblocking Agents

Principles of Silica Antiblocking AgentsOur manufacturing process can be tailored to provide a broad array of product attributes. Blocking is the adhesion or bonding of two surfaces of film that occurs after production and/or during prolonged storage. Layers of polymer film tend to stick together, which is undesirable for stacked packaging and film processing & converting. Fast and damage-free unrolling of film is important. This “blocking” phenomenon is especially severe with polypropylene, polyethylene, and polyester films.

SYLOBLOC® silica:

• Imparts a micro-rough surface to the film, resulting in less film-to-film layer contact

• Reduce blocking between the individual layers of film

• Has an extensive product portfolio to include tailor-made products for different film thicknesses and polymer types

Pore Volume

Higher Pore Volume Lower Pore Volume

Differing manufacturing processes result in varying degrees of internal porosity. The higher the porosity, the more efficient the antiblocking grade will be.

SYLOBLOC® Silica Product PortfolioOur product portfolio addresses the specific needs of a wide variety of films.

Typical Film Thickness

<20 µm 0.8 mil

20-50 µm 0.8-2.0 mil

50-70 µm 2.0-2.75 mil

>70µm 2.75 mil

0

2

4

6

8

10

2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4

K200

E300

46

35

S200

25B

S40045B45

4748

41 41B

44

Antiblocking Efficiency:

Outstanding Excellent Good

PORE VOLUME (ml/g)

PAR

TICL

E SI

ZE (

mic

rons

)

S500

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SYLOBLOC® Silica Antiblocking Agents

Various Ways of Delivering Additives

Separate Components Physical Mix Integrated

Plain Silica Physical Mix Integrated

SYLOBLOC® silica antiblocking agents can be delivered into a polymer melt or masterbatch in a number of forms: as a standard plain silica or in combination with other organic additives. The combination grades can be provided as physical blends or integrated blends.

In addition to efficiencies gained by combining several additives into one package, our combination grades provide advantages in handling through reduced dusting and improved flow characteristics.

SYLOBLOC® Silica Combination Products We can provide a single solution to meet the complete additive needs of our customers.

Physical Blends

Produced in a unique cold homogenization process consisting of two or more additives, one of which is a SYLOBLOC® silica antiblocking agent.

Integrated Combination Products

Produced in a specialized mixing process where the organic additives are integrated into the pore volume of the SYLOBLOC® silica antiblocking agent.

Advantages:

• Dust reduction

• Ease of handling

• Reduced moisture uptake

• Constant and homogeneous delivery of the entire additive package

• Less off-spec output

• Cost savings through elimination of product loss via separate transportation, handling, and conveyance of multiple additives

SYLOBLOC®

Silica Grade% SYLOBLOC® Silica % Other Additive Additive Type

Phys

ical

Ble

nds 243H 43% 57% Erucamide

250/250H 50% 50% Erucamide

Custom XX% XX%As specified by customer

Inte

grat

ed B

lend

s M150 50% 50% Oleamide

M243H 43% 57% Erucamide

M250/250H 50% 50% Erucamide

Custom XX% XX%As specified by customer

ManufacturingR&D and Tech ServiceGlobal Headquarters Columbia, MD, USA

The information presented herein is derived from our testing and experience. It is offered for your consideration and verification. Since operating conditions vary significantly, and are not under our control, we disclaim all warranties on the results that may be obtained from the use of our products. W. R. Grace & Co.-Conn. and its subsidiaries can not be held responsible for any damage or injury occurring as a result of improper installation or use of its products. Grace reserves the right to change prices and/or specifications without prior notification. GRACE® and SYLOBLOC® are trademarks, registered in the United States and/or other countries, of W. R. Grace & Co.-Conn. TALENT TECHNOLOGY TRUST™ is a trademark of W. R. Grace & Co.-Conn. This trademark list has been compiled using available published information as of the publication date of this brochure and may not accurately reflect current trademark ownership or status. © Copyright 2019 W. R. Grace & Co.-Conn. All rights reserved. DOC108

Grace Corporate Headquarters

W. R. Grace & Co.-Conn 7500 Grace Drive Columbia, MD 21044 USA Tel: +1.410.531.4000

Regional Locations

Latin America São Paulo, Brasil Tel: +55.11.4197.7540

Asia/Pacific Shanghai, China Tel: +86.21.3325.8288

Europe Worms, Germany Tel: +49.6241.40300

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