A Novel Slip Agent for PET

Hans Werink

R&T Project Leader

Holland Colours NV

PETnology 2015 - Nuremberg

09 November 2015

Holland Colours Profile

PackagingPVC Building and ConstructionSilicones/Elastomers

Founded 1979Over 400 employees

Listed at Euronext, 50+ % employee

owned

6 Plants 6 Sales Offices

2000 Customers in 70 Countries

Focus markets:

Holland Colours Profile

United KingdomThe Netherlands

HungaryCanada

USA

MexicoChina

Indonesia

Holland Colours Product Formats for PET

Non-polymeric solids – Holcobatch &

Holcoprill

Liquids - HolcoPET

High opacity masterbatch - Holcomer

to benefit from

Optimized processability

Economy of colouring

Optimal productivity

Brand Owner Expectations

Brand owners expect

perfect preforms and bottles

without surface damage

but…

They are not willing to pay

much extra for it!

This means that extra cost

for preform surface quality

is difficult to absorb by the

converters – Cost is King!

Origins of Surface Damage

Surface scratches/scuffs from preform handling & transport

Image source: http://www.sipa.com

Preform ISBM Preform stretch factor from

preform to bottle:

~ 3x height

~ 3x width

Surface scratches, scuffs

& marks get enlarged with

the same factor

Main contributor:

High Coefficient of Friction

(CoF) of fresh preforms

Why would you use a slip agent?In case of PET preforms:

• To lower coefficient of friction on the preform surface

• Reduce scratches, improving final product appearance

• Assists in efficient packing of preforms in transport containers

Mould open

Coefficient of Friction - Comparison

60%

65%

70%

75%

80%

85%

90%

95%

100%

Blanc – PET Polyclear T94

0.2% Competitor 0.2% HolcoSlipCurrent generation

0.1% HolcoSlip 271 0.2% HolcoSlip 271 0.3% HolcoSlip 271

Dynamic CoF %

Coefficient of Friction - Measurement

DiscolorationDiscoloration (or the absence of

it) of PET is an important factor for

additives

In first use

In post-consumer recycling

applications

Chemically unstable

additives will degrade and

cause discoloration during

processing and

re-processing (recycling)

0

1

2

3

4

5

6

T94 PET Natural 0.3% Competitor 0.3% HolcoSlip 271

b*

Discoloration in First Use

CieLab values PET plaques with slip additives

L* a* b* DL* Da* Db* DE*

T94 PET Natural 95.53 -0.07 0.73

0.3% Competitor 95.25 -0.08 1.21 -0.29 -0.01 0.48 0.55

0.3% HolcoSlip 271 95.36 -0.09 0.90 -0.18 -0.02 0.16 0.24

Db* = 0.48 Db* = 0.16

Discoloration in Recycling: EPBP

EPBP Quick Test QT 500: Oven @ 220°C for 2 hrs

CieLab values PET plaques with slip additives after 1 hour oven @ 220°C

L* a* b* DL* Da* Db* DE*

T94 PET Natural 94.90 -0.68 1.31

0.3% Competitor 93.27 -0.13 4.41 -1.63 0.55 3.10 3.54

0.3% New Slip Agent 94.88 -0.63 2.31 -0.03 0.05 1.00 1.00

0

1

2

3

4

5

6

T94 PET Natural 0.3% Competitor 0.3% New Slip agent

b*

Db* = 1.00

Db* = 3.10

Customer Value

Value

Process & Properties

Cost-effectivenessPremium appearance

Customer Value

Premium Appearance

Scratch free bottles are perceived as premium packaging

No occurrence of black specks; due to absence of deposit formation on extruder screws and hot runners

No yellowing

Value

Customer Value

Cost - effectiveness

Cost-effectiveness; usage level ~50% lower than any other commercially available slip agent

Process; no influence on preform moulding cycle time and no screw slip effect

More efficient octabin filling; The slip property allows for more efficient filling of octabins (~10% more preforms).

Value

Customer Value

Process & Properties

Material properties; unchanged at normal usage levels

No IV-loss

No chemical interaction with PET

Value

Regulatory Compliance HolcoSlip 271-Series is designed and

manufactured for food contact applications in PET packaging only

EU 10/2011, confirmed by EFSA: no restrictions - no specific migration limit (SML)

Passed EU 10/2011 migration tests forOverall Migration Limit (OML), below detection limit

FDA compliance; migration & testing work finalised, dossier in final stage of acceptance - expected late 2015

Product & Handling

Product; low viscous liquid

Easy dosing; ‘drop in’ solution on any drum-based liquid dosing set-up

Holland Colours provides gravimetric liquid dosing systems – “What you Set is what you Get”

Economic AdvantageBasic advantages:

Lower dosing for same slip effect (vs competition)

More preforms in octabin (vs no slip additive used)

Calculation example

Assumptions:

Husky HyPETTM 300 with 72 cavities

Producing 242 million preforms per year of ~25

gram = 6,000 tonnes PET (96% uptime and 24/7

production)

lower dosing: 0.08% vs. 0.13% is a saving of 3,000 kgs of slip additive per year

10% higher octabin filling rate; instead of 20,000 in one octabin now filling up to 22,000 = a saving of 1,800 octabins per annum on internal and external transport movements

SCENEDisclaimerThe information contained in this document has been prepared for

presentation and promotional purposes and should only be used for

guidance. This information should not be considered as a guarantee under

any circumstances.

Holland Colours makes no warranty, expressed or implied and gives no

permission to practice any patented invention without a license and

assumes no legal liability or responsibility for the accuracy, completeness

or usefulness of any information contained herein and cannot accept

liability for any injury, loss or damage resulting from reliance upon such

information.

All sales of Holland Colours products shall be subjected to the General

conditions of Sale and Delivery of Holland Colours.

If additional information is required, please contact your local Holland

Colours’ sales representative or visit our website: www.hollandcolours.com