Technologies Used in PET-Constar International

8/6/2019 Technologies Used in PET-Constar International

1/32

TECHNOLOGIES USED

IN POLYETHYLENE

TEREPHTHALATE, PET(CONSTAR

INTERNATIONAL)


2/32

WHAT IS PET ?PET is polyester of terephthalic acid and ethylene

glycol that can be obtained by the condensation

of dimethyl terephthalate with ethylene glycol andalso terephthalic acid with ethylene glycol or

ethylene oxide.

It has a carboxyl group at one end and a

hydroxyl group at the other and it can condensewith another molecule of alcohol and acid.

This molecule can grow up to a molecular

weight of 20000.


3/32

PROPERTIES OF PET

y Hard, stiff, strong, dimensionally stable material that

absorbs very little water

y Good gas barrier properties and a good chemical

resistance except to alkalis which will hydrolyze it

y Crystallize under certain controlled conditions

y During the glassy state (temperature below Tgwhere side motion is restrained), it can be oriented

by stretching while molding and extrusion in order

to increase its strength and stiffness.


4/32

HOW PET BOTTLES ARE MADE?

y

There are two basic molding methods1. Two-step cold preform method

2. One-step hot preform method


5/32

1. Two1. Two--stepstep

ColdCold PreformPreform Method Methody Two separate machines are used.

y The first machine injection molds thepreform which resembles a test tube with

the bottle-cap threads already molded intoplaces. The body of the tube is madesignificantly thicker as it will be inflated intofinal shape in the second step using stretch

blow molding.y Next, the preforms are heated rapidly and

then inflated against a two-part mold toform into the final shape of the bottle.


6/32


7/32

2. One2. One--stepstep

HotHot PreformPreform Method Method

y The entire process from raw material to

finished container is conducted withinone machine, making it suitable for

molding non-standard shapes which

include jars, flat oval, flask shapes and so

on.


8/32

CONSTAR INTERNATIONALCONSTAR INTERNATIONAL

1. Barrier technology (employ oxygen

scavengers blended evenly throughout

the PET)

i. Oxbar

ii. MonOxbar

iii. DiamondClear


9/32

2. Hot fill technology (develop PET

bottles and jars that can withstand hot

fill processes used in packaging shelf

stable food and beverages.)

i. Vertical Compensation TechnologyTM

(VCTTM)

ii. X4TM

iii. Wide Mouth Heat Set (Blowtrim)


10/32

BARRIER TECHNOLOGY

Constar International

OxbarTechnology

MonOxbarTechnology

DiamondClear Technology


11/32

TYPES OF BARRIER

1. Absolute

barrier

Ideal and have non-permeable wall,

blocking the

ingression of the gas

Glass and metal


12/32

TYPES OF BARRIER

2. Passive

barrier

A barrier tooxygen built into

the bottle wall

and slows down

they permeation

across the bottle


13/32

TYPES OF BARRIER

3. Active barrier

A physical barrier which

chemically reacts with

oxygen, slows downtheir permeation and

neutralizes them when

they try to enter the

bottle or those already

exist in the product


14/32

Importance of Oxygen BarrierImportance of Oxygen Barrier

Protect food and beverage products

from excessive exposure to oxygen

To maintain products quality, flavour,

colour, mouth feel, and shelf life


15/32

WHY USING PET?

PET Glass

Extremely light Heavy

Unbreakable Breakable (special care isneeded)

Lower transportation cost High transportation cost

Safe Safe


16/32

1.1. OxbarOxbar TechnologyTechnology

For beer and many flavoured alcoholic beverages

Active barrier technology

Advantage: Oxygen-scavenging material re-

balances its rate of reaction to follow changestemperature - assures consistent, high-level

protection of the product during distribution.

Multi-layer; three layers where active oxygenscavenging materials are incorporated in the

middle layer.

Disadvantage: More susceptible to de-lamination


17/32


18/32

2.2. MonOxbarMonOxbarTechnologyTechnology

Targeted for non-

carbonated oxygen

sensitive productsActive barrier technology

Monolayer

no de-lamination

more flexibility to easily

create custom shaped

packages


19/32

High capacity for oxygen scavenging

Gives long-lasting protection even in theface of protracted storage or thermal

abuse during empty- or filled-distribution

Robust, enabling high filling speeds

Great clarity, provides a better

appearance

Recyclable PETE-1 plastic recycling

codes

Deliver freight savings and reduced

greenhouse emissions.


20/32

3.3. DiamondClearDiamondClearTechnologyTechnology

Active barrier technology

Unique and delivers high level of shelf life, up to 2 years

Constar had conducted a shelf life study in a sided-by-side

juice. PET with DiamondClear outperformed thecompetition at 6, 12, 18, and 24 months

At each milestone, products protected by DiamondClear

were fresher, more vibrant in colour and better tasting.

This is because DiamondClears sophisticated oxygen

scavengers are blended evenly throughout the PET and

preventing oxygen from permeating the package and

hence ensuring the product quality.


21/32

Graph above shows the protection strength among

the normal PET, competitive monolayer barrier, and

DiamondClears PET toward oxygen over time.


22/32

High capacity for scavenging oxygen allows the

production of thinner walls PET bottles without

appreciable loss of barrierLess susceptible to oxygen ingress than other

PETs

Offers a glass-like clarity and higher

gloss, gives an unobstructed view of

the product

This helps to create a superior

shelf presentation and making a

compelling visual connection with

consumers who equate vivid

colours with product freshness and

quality.


23/32

Monolayer structure bottles that optimizevisual aesthetics and flavour throughout an

extended shelf life.

Allows for significant design and processingfreedom for both performs and bottles,

without the haze and de-lamination

The monolayer structure retains its goodlooks even through rough handling and allow

faster running speeds on filling lines.

PET bottles with DiamondClear also are asustainable alternative to glass packaging.


24/32

HOT FILLING TECHN0LOGY

y Constar International

Vertical Compensation TechnologyTM (VCTTM)

X4TMTechnology

Wide Mouth Heat Set (Blowtrim)


25/32

IMPORTANCE OF HOT FILLINGIMPORTANCE OF HOT FILLING

TECHNOLOGYTECHNOLOGY

y Allows production of innovative, value addingpackages

y Enables brand owners, private labelmanufacturers, and retailers to deliver value to

customers in the form ofsustainable

light weight

Unbreakable

attractive PET packagingthat withstands the rigors of the hot fill process.

y Allow for creative designs without the limitationsimposed by traditional vacuum compensationfeatures.


26/32

1. Vertical Compensation1. Vertical Compensation

TechnologyTechnologyTMTM

(VCT(VCTTMTM

))

Delivering the clarity and rigidity whichemulates the feel of glass in lightweight

Environmental friendly PETUnique geometry eliminates the need for

vacuum panels and allows for weight reductionin the package.

CONSTruct advanced predictive engineeringemployed to optimize the design of thesecontainers, so that they feel more rigid withoutadded material.


27/32

PET containers with VCT technologyPET containers with VCT technology

y Feature a monolayer structure, whicheliminates the threat of delaminating thatoccurs in multi-layer plastic container

y The panel-less round design also allowsfor more efficient high-speed labelapplication

y

The unique geometry of VCT technologyresults in more strength using lessmaterial


28/32

For Example.For Example.

y Ready-to-drink

flavoured ice teas

and green tea-flavoured waters

in 20-ounce PET

bottles


29/32

2. X42. X4TMTMTechnologyTechnology

y The vacuum is absorbed in the base rather than

in one of the six vacuum panels, with no change

in structural integrity

y

Helps to maintain a stable footprint after filling,when the bottom contracts, and again after

opening, when it returns to its original position.

y Run consistently and efficiently on filling lines.

y The panel-free design also improves labellingefficiencies.

y Lightweight, weighing as little as one-tenth that

of a comparably sized glass container.


30/32

For exampleFor example

y The 20.5-ounce

PET bottles that is

supplied byConstar for

AriZona Beverage

Company for itsnew RESCUE

Water.


31/32

3.3. Wide Mouth Heat SetWide Mouth Heat Set

((BlowtrimBlowtrim))

Lighter in weight than traditional glass-

based packagingUnbreakable during manufacturing,

distribution, stores and homes.

Have a robust structure which feelssturdy in-hand and is closer in feel to

glass than traditional vacuum panels.


32/32

For exampleFor example....

A 24-ounce wide-mouth hot-fillPET jar, FrancescoRinaldi pastasauce

Date post:	08-Apr-2018
Category:	Documents
Upload:	jessmine-chow
View:	217 times
Download:	0 times

Technologies Used in PET-Constar International

Documents