What is AIMPLAS? - ComexiCTEC

What is AIMPLAS?

AIMPLAS is a Technology Centre with more than 20 years of experience helping companies in the plastic sector

Staff

We are a team of more than 100 highlyqualified professionals

Resources

Over 8.500 m2 facilities with state-of-the-art equipments and instrumentation

Our greatest asset: your confidence

+500associates

+1.500customers

8.3M€revenues

2013 DATA

Revenues byactivity

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Marketoriented

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Global expertise across the whole plastics value chain

Production and/or commercialization

of plastic raw materials

Production and/or commercialization of semi-manufactured

raw materials “COMPOUNDING”

Manufacturing / Transformation

End-usersValorisation

of plastic waste

We work with industry leaders…

And also with SMEs committed to R&D and quality

Materials for Flexible Packaging

Vicent Martinez Sanz

Dpto. EXTRUSION

[email protected]

Conecte con @aimplas

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http://twitter.com/aimplas


https://www.youtube.com/aimplas


http://www.slideshare.net/AIMPLAS-plastico


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Materials for flexible packaging

Content

o Multilayer films and packaging requirements

Main film properties for flexible packagingBasic multilayer film structureAdvantages of thermoplastic filmsFlexible packaging and sustainability

o Multilayer film technologies

Thermoplastic coextrusionExtrusion coatingLamination with adhesivesBenefits and drawbacks of adhesive lamination

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Materials for flexible packaging

o Thermoplastic films: Main families and properties

Mechanical strengthBarrier propertiesThermal resistanceCOF: Slip agent additivesSurface Energy : Features for corona treatment

HDPE, LDPE , LLDPECPP, BOPP, Metallized and special coatingsOPETOPA

Biopolymers

Usual applications for multilayer films

Quick tests for film material identification

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Multilayer film

Film combining 2 o more single films

BOPP film

Ink

Adhesive

Met BOPP film

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Multilayer microscope enlarged view coextruded film

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Multilayer microscope enlarged view laminated film

Human hairthickness

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Why combining different materials in thesame structure?

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In most applications one single material do not offer the

whole range of properties required for product packaging

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In most applications one single material do not offer the

whole range of properties required for product packaging

The combination of different materials, providing different

functionalities, allows for a optimal structure to meet

packaging requirements

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Packaging requirements

o Mechanical strength

o Seal-ability

o Hygiene & Safety

o Barrier properties

o Transparency / Opacity

o Thermal resistance

o Printability

O2

CO2

flavor

MAP

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Main properties of films in flexible packaging

Material Thermalsealability

Barrier

Oxygen Moisture Light

Paper & Cardboard --- --- --- XX

Al foil --- XXX XXX XXX

LDPE XX -- XX -

BOPP X - XX -

Met BOPP - X XX XX

EVA XXX - - -

EVOH - XXX --- -

PVDC XX XX XX -

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Multilayer film structure

Structural layer: BOPP, OPET, OPA

Inks

Adhesive

Barrier layer: Foil Al, EVOH, PVDC, PA

Adhesive

Seal layer: LDPE, CPP, EVA, Ionomers

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Benefits of plastic materials for packaging

o Good mechanical strength / low weight balance

o Good barrier properties

o Thermal seal-ability

o Reciclability

o Low cost

o Printability

o Easy processing by several techniques

allowing free design and shapes

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Packaging trends

Plastic packages are gaining share vs. traditional materials

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Packaging trends

Flexible packaging overcomes rigid packages

http://www.freundcontainer.com/product.asp_Q_pn_E_4691B04_A_cn_E_46

http://www.freundcontainer.com/product.asp_Q_pn_E_4691B04_A_cn_E_46

http://www.freundcontainer.com/product.asp_Q_pn_E_BP215557_A_cn_E_46

http://www.freundcontainer.com/product.asp_Q_pn_E_BP215557_A_cn_E_46

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Flexible packaging features

o Thin gauge films with improved mechanical strength

o Optimal barrier properties thanks to multilayerstructures and special coatings

o High speed production in Form/Fill/Seal lines

o Lower environmental impact due to weight reduction

and transport cost savings

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Drawbacks: Difficult to recycling

o Low gauge films, low bulk density, combination of different materials

(plastic, paper, metal….)

o Need for layer separation using solvents or other techniques to allowmaterial recycling

o Need for compatibilizers when reprocessing plastics with differentmelting points

o Usually this type of waste is diverted to:

Energy recovery: plastic incineration

Mechanical recycling: low value products (bin bags,pipes, pots, etc.)

Technologies for multilayer films

o Thermoplastic coextrusion:

Blown film coextrusion

Cast film coextrusion

o Extrusion-coating

o Adhesive lamination

Thermoplastic coextrusion

Simultaneous extrusion of different polymeric materials through a

common die

Blown film coextrusion

Cast film coextrusion

Thermoplastic film coextrusion

Process for multilayer films (up to 11 layers) combining different

thermoplastic polymers


Process for multilayer films (up to 11 layers) combining different

thermoplastic polymers

Thermoplastic tie layer adhesives are needed to join non-compatible polymers


Recycled material can be sandwiched between functional barrier layers


Recycled material can be sandwiched between functional barrier layers

Functional additives are only added in the functional layer


Processing polymers with different rheological properties lead to interlayer

instabilities and optical deffects


Complex technology, high investments, expensive maintenance

equipment………but gaining share in the extrusion industry

Mainly in multilayer sheet for thermoforming semi-rigid trays requiring

barrier properties and glossy appeal

Extrusion-coating

Thermoplastic coating onto web substrate

Extrusion-coating

Widely used process for kraft paper coated with

LDPE to improve packaging performance:

o Moisture barrier proof

o Thermal sealability

o Improved puncture and tear strength

Extrusion-lamination

Lamination with adhesives

Process for joining films of different materials (plastic, aluminium foil, textile,

cardboard, etc.)

Lamination with adhesives

Dry lamination

Wet lamination

Benefits lamination with adhesives

o Reverse printing ink and adhesive layer are sandwiched between films to

avoid direct contact with product to meet legislation requirements

BOPP film

Ink

Adhesive

Met BOPP film

Benefits lamination with adhesives

o Lower energy costs (mainly solvent-less) compared to other coating or

coextrusion processes

o High speeds (up to 600 m/min)

o Wide range of bioriented films, metallized, specialty coatings for high

demanding applications

o Precise control of film thickness

o Lower equipment investment costs

o Process efficiency and flexibility to adapt for short runs

Drawbacks lamination with adhesives

o Need for optimising adhesive coating weight

o Adhesive curing time lasts for 7 days

o COVs generation for solvent based adhesives

o Migration risks for PAAs generated from aromatic isocyanates

Primary aromatic amides (PAAs) can be originated from

degradation of aromatic isocyanates (TDI, MDI) included in

formulation of PUR adhesives and some printing inks

PAAs are considered carcinogenic substances at very low

amounts

Free monomer migration

PAA

Foil Al Sealing PE layer Food

Adhesivenot yet cured

TDI

Free monomer

Free monomer migration

PAA

Foil Al Sealing PE layer Food

Adhesivenot yet cured

TDI

monómero libre

Free monomerreacts leading to

PAAs

Free monomer migraton to food

Water migration

PAAs migration to food

European Regulation 10/2011 estates in annex II that

plastic materials for food contact applications shall not

release PAAs in quantities exceeding the specific migration

limit 0,1 mg per kg of food or simulant

Migration essays by specific HPLC

chromatographic analysis allows PAAs detection

within specific migration limits to assure laminate

safeness

If the adhesive curing process is fully completed, the

laminated is safe with no risk for free monomer

migration to the food

So that the importance of defining curing conditions

(temperature, moisture and time) of adhesive

system in order to assure lack of non-reacted

components

Curing rooms

o Temperature 40-50 ºC

o RH 50%

o Effective air circulation

Curing time for reels can be reduced to 3 days

Adhesive bond strength

Strip 15 mm width

Separation speed 100 mm/min

Adhesive bond strength

Good bond strength leads to film break

Materials in flexible packaging: Non plastic

o Paper and Cardboard

o Textiles woven / non woven

o Aluminium foil

High barrier properties

Excellent for retort packaging

Recommended thickness> 12 µm to avoid pin-hole

Type A Quality best wettability free of rolling oils

Need special ink and adhesives series for printing and laminating

Aluminium Foil Rolling Process

Aluminium foil wettability

Aluminium Foil Quality

45º

OK No OK

Materials in flexible packaging: General properties

Plastic films general properties

Thickness

Higher thickness films offer better mechanical strength and barrier properties

(WVTR and OTR), but also affects transparency and haze

Coextruded films biaxially oriented offer thin gauge films with improved

mechanical strength and high yielding (m2 /kg)

Thermoplastic films properties

MATERIAL THICKNESS (µm)

DENSITY(g/cm3)

YIELD(m 2/kg film 25 µm)

Cellophane 10 – 30 1.45 27.1

HDPE 350-1000 0.95 41.5

LDPE 25-200 0.92 42.7

BOPP 20-40 0.90 43.5

BOPET 12-30 1.39 28.3

BOPA 12-30 1.16 33.9

Mechanical strength

Depends on polymer type and heavily influenced by the extrusion

process and the polymer chain orientation

o Blown film extrusion (HDPE y LDPE) offer good balance in both MD

and CD

o Cast film and biaxial orientation (BOPP, OPET, OPA) increase

mechanical strength up to 300%

Property Unit HDPE LDPE BOPP BOPET BOPA

TensileStrength

MD N/mm2 35 32 140 230 250

TD N/mm2 48 28 280 260 280

E-Modulus MD N/mm2 862 303 2000 4400 3500

TD N/mm2 897 338 3500 5200 3800

Elongation MD % 450 470 220 110 110

TD % 500 550 70 90 100

Tearpropagation

MD gm 150 230 35 35 75

TD gm 150 310

Mechanical properties

Tensile strength

Higher Young´s Modulus means lower

elongation under tensile stress so that

the material show poor elastic behabiour

Strain

Tensilestress

Young´s Modulus(kg/cm2 )

PVC(plastified) 350-560

LDPE 1.000 - 1.800

LLDPE 2.000 - 2.800

HDPE 5.600 - 9.100

BOPP 7.700 - 24.000

BOPET 14.000 - 39.000

BOPA 14.000 - 15.500

Foil Aluminum 704.000

Rubber

Mechanical properties

Mechanical properties can be heavily affected by little changes in

temperature

This fact is critical when working with thin gauge films and high

temperatures in drying tunnel to avoid elongation and other dimensional

defects

Web tension

Depends on each material Young´s Modulus, and film thickness and width

Web tension

Example: Film PET de 40 microns y 80 cm width

35 N/cm/mm x 80 cm x 0,04 mm = 112 N

Factor web tension(N/cm/mm)

PE 7 - 21

CPP 14 - 35

BOPP 21 - 70

PET 35 – 105

PA 7 – 21

Foil Aluminum 35 - 105

Cellophane 35 - 70

As a rule of thumb, keep minimum tension to spread film assuring roll traction and

in order to avoid wrinkles, elongation and other defects

Checking web tension

If after crosscut film peaks lift MD, mean too much tension

Machine Direction

Checking web tension

Machine Direction

If after crosscut film peaks lift CD, mean too much temperature on nip

Causes of film wrinkles

o Excessive web tension


o Excessive temperature in nip

calender or drying tunnel

o Dimensional changes due to

moisture or solvent absorption


Check rollers alignment


Balanced NIP pressure


Check uniform film gauge and avoid slack edge

Defects in laminating: Curling

Causes:

o Different film tension

Tips:

o Check proper film tension

o Rewind PE film as outer layer in the reel

Thermal resistance

Ability to withstand boiling, sterilization or retort treatments

MATERIAL HDPE LDPE PP PET PA

Maximum servicetemperature (ºC)

100 66 116 204 177

Thermal resistance

Also affects dimensional stability and thermal seal-ability

Lab heat sealing tester

Property Unit RCF HDPE LDPE Cast PP BOPP BOPET BOPA

OTR cm3 /m2 day 670 1800 7000 3700 2250 45 35

MVTR g / m2 day@ 90% HR

1 5 15 11 7 28 300

Fats resistance +++ + - + +++ +++ +++

Barrier properties

Comparison films 25 microns

Barrier properties

Barrier properties essays

ASTM F1249-06 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared SensorASTM D3985-05 Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor

Coloumetricdetector

As the oxygen gas permeates through the test film into the

carrier gas, it is transported to the coulometric detector where it creates an electric current with a magnitude that is proportional to the number of oxygen atoms

flowing into the detector

Additives

Plastic materials contain a wide range of several additives for improving specific

performance:

o Antioxidants

o Light stabilizers, UV absorbers

o Plasticizers

o Impact modifiers

o Nucleating agents, clarifiers to enhance optical properties

o Antistatic agents to minimise build-up of static electricity

o Anti-block particles to create surface micro-roughness to prevent film layers to

stick together

o Slip agents to reduce the surface COF avoiding film adheres to rolls metal

surface

Coefficient of Friction

Ability to sliding of two surfaces in contact with each other

COF > 0.50

COF < 0.20

Resistance to slip surfaces

High slip films that can be prone to roll

telescoping

COF test

Static COF consider just starting motion

Calculated by finding the initial peak force required to move the sled and

dividing the value by the weight of the sled

Dynamic COF consider regular motion

Calculated by finding the average load during the test and dividing this by

the weight of the sledUNE-EN ISO 8295: Plásticos. Películas y láminas. Determinación de los coeficientes de fricciónASTM D1894: Standard test method for static and kinetic coefficients of friction of plastic film and sheeting

Slip agents

Based on fatty acids amides (erucamide)

that migrate to film surface forming

a low friction layer

Low molecular weight primary amides bloom rapidly to film surface leading to:

o Haze and poor aesthetics

o Masking Corona treatment reducing surface energy

o Causing delamination

o Poor seal strength

o Build up wax layer on equipment surfaces

Thermal sealing defects

Adhesivenot fully cured

Isocyanate free

monomer migrates to outer layer and reacts

with erucamide leadingto polyurea (TM =250ºC)

COF changes in laminates

Erucamide tends to migrate towards adhesive side (or even closer

films such as PET or PA) due to attraction to polar groups

PET film Adhesive PE film

Surface energy

Thermoplastic films are non-porous inert substrates with poor wettability

properties for inks, adhesives or other coatings.

Surface treatments are needed in order to raise surface energy at a minimum

dyne level

Surface Energy levels for converting

Printing solvent based inks 38-42 Dyne/cm

Printing waterborne inks 44-48 Dyne/cm

Lamination adhesives 38-44 Dyne/cm

Plastics Surface Energy

PP 29-31 Dyne/cm

PE 30-31 Dyne/cm

PS 38 Dyne/cm

ABS 35-42 Dyne/cm

PA <36 Dyne/cm

PMMA <36 Dyne/cm

PET 41-44 Dyne/cm

PVC 39 Dyne/cm

PC 46 Dyne/cm

Treatments to increase Surface Energy

o Primers or adhesion promoters

o Flame oxidation treatment

o Corona treatment

o Atmospheric plasma

o Primers or adhesion promoters

o Flame oxidation treatment

o Corona treatment

High voltage discharge in the air-gap between electrode

and dielectric cylinder ionize air particles into high energy

species (ozone generation) that collide onto film surface

breaking molecular bonds and forming high polarity

functional groups for ink anchoring

Plain PE PE surface after Corona treatment

o Corona treatment

Films must be Corona treated immediately after extrusion process (pre-treated films)

Polyolefins (specially PP) require high power treaters in order to assurer enough dine level

Corona treatment is non permanent, so that dyne level decay over the time can be noticed

due to:

o Additives (slip agents) migrate to film surface masking Corona treatment

o High levels of humidity in the environment

o Contamination from dust, debris, oils, etc.

In-line refresh Corona treatment is needed right before the printing or lamination process

in order to reach minimum dyne level

o Corona treatment

Surface Energy measurement methods

Contact angle measurement

Test inks or pens

Corona treater

Adjust power supply to watt density according to each film properties

Watt density (W min / m2) =Power supply

Line speed x Film width

Corona treater

Check air-gap distance (1.5-2.0 mm) across electrode and cylinder

Corona treater

Avoid moisture or dust into corona chamber that could lead tohigh voltaje arcing

Corona treater

Keep electrode and roll cleanliness

Corona treater

Check web tension and wrapping angle to avoid back side treatment

Anti-seal effect due to back side treatment

sdfdfdfdf


A precise flow of high energy ionized gas

clean, etch and functionalize substrate surface

More intense and lasting treatment than Corona


Treatment lasting up to 18 month

Higher surface energy levels up to 60 dyn/cm

No risks back-side treatment or pin-holes

meses

dyn/cm

Suitable treatment for waterborne coatings onto BOPP films

Plasma

Corona

Optic defects: Blisters do to non-homogeneous adhesive application

Defects in laminates: Blisters

Causes:

o Low surface energy in carrier web leads to bad wettability

o Slip additives migration mask corona treatment

Tips:

o Check adhesive application onto web treated side

o Refresh corona treatment prior to application

Materials in flexible packaging: Main families

Polyethylene

HDPE

• Long linear polymer chains lead to high crystalline structure

• Good mechanical strength and stiffness

• Higher melting temperatures

• Higher moisture barrier properties

LDPE

• Branched chain structure leading low crystallinity

• Good transparent films, with enhanced flexibility and stretchability

• Good moisture barrier

• Poor O2 and gases barrier

• Excellent heat seal-ability due to low melting point

LLDPE

• Copolymer ethylene with copolymer (butene, hexene, octene) using

stereo-specific Ziegler-Natta catalysts

• Higher tensile and tear strength with lower gauge films

• Melting temperature between 10—15ºC higher than LDPE

• More difficult to extrude so that it is usually blended 70/30 with LDPE

Metallocene mPE

• Copolymer ethylene-hexene using stereo-specific metallocene catalysts

• Narrow molecular weight distribution (MWD)

• Excellent puncture strength and toughness at low temperatures

• Good transparency

• Lower melting temperatures and hot tacking for

better heat sealing performance

• Films for laminates in sacks, stand-up pouches, etc.

Polypropylene (PP)

Semi-crystalline polymer with better mechanical strength, lower density

and higher temperature resistance than PE

Widely used in snacks, confectionery, pet food, etc.

Cast PP (CPP)

Better thermal resistance than PE

Heat seal layer in boiling or retort packaging

Good impact strength

BOPP

Biaxial orientation provides enhanced mechanical strength

(stretching polymer chains in both machine and cross direction) and

higher barrier properties

BOPP coextruded

In order to enhance performance in flow pack packaging lines a three layer

coextruded structure is obtained using low heat sealing PP copolymer resin

grades in the outer layers

Treated layerPP homopolymerHeat sealing layer

BOPP metallized

In order to improve barrier properties and light opacity an aluminium

coating layer is applied using a continuous metallizing process in a

deposition vacuum chamber

Aluminium layerCarrier layerPP homopolymerHeat sealing layer

BOPP metallized

Optical Density test

OD Thickness (nm)

0.5 6

1.0 12

1.5 19

2.0 28

2.5 38ASTM D1003 – 13 Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics

Laminates metallized films: metal transfer

Delamination due to metallized layer transfer

BOPP Met

BOPP Print

CARRIER

Laminates metallized films: metal transfer

High Optic Density metallized films offer

homogeneous layer for a continuous adhesive coating

BOPP coatings

o UHB AlOx clear coating

Non toxic coating

Suitable for microwave and retort applications

Vacuum deposition process

with oxygen injection

BOPP coatings

o UHB AlOx clear coating

Plasma assisted

process

Non porous coating with improved optical transparency and higher barrier properties

BOPP coatings

o UHB SiOx clear coating

Vacuum deposition coating

by plasma or Electron Beam

Transparent films with excellent oxygen barrier (similar to Al Foil and up to

250 times lower permeation than BOPP)

But leads to yellowish, flex-cracking issues and difficult printing

BOPP coatings

o Acrylic or chemical treated

Excellent gloss and optical properties

High surface energy to enhance printability

Film with COF more regular and durable

Lower heat sealing temperatures

Enhanced performance in high speed flow-pack packaging lines

Do not refresh using Corona treatment

How to identify acrylic coated side?

Tape peel test

Tape Tesa 51108 or 3M Scoth 610

Marker Staedtler Lumcolor Nº350

ASTM F2252-03, Standard Practice for Evaluating Ink or Coating Adhesion to Flexible Packaging Materials Using Tape

BOPP coatings

o Saran (PVdC)

High barrier properties to oxygen and water moisture permeation

Good heat seal-ability

BOPP coatings

o Saran (PVdC)

High barrier properties to oxygen and water moisture permeation

Good heat seal-ability

o PVOH

High oxygen barrier (in dry conditions)

Chlorine free

Difficult to heat sealing

Excellent printability

Lower solvent retention

BOPP white & pearl cavitated films

Spherical microparticles lead to microvoids during biaxial orientation process

Films with lower density (down to 0,3 g/cm3) and higher stiffness

Good opacity and improved printability

Soft touch (like plastic paper)

OPET

Good mechanical strength at temperatures above 150ºC

Excellent glossy and transparency

Good chemical resistance and excellent dimensional stability

Excellent printability

Good barrier properties (oxygen and moisture) due to high crystallinity

Also available in films metalized and special coatings

Widely used in retort packaging, dual oven, lids, etc.

OPA

Excellent toughness, drawability and resistance to puncture and stress

cracking

Excellent glossy and transparency

Good chemical resistance to fats

Excellent thermal resistance at high temperatures

Good oxygen and flavours barrier

Very sensitive to water moisture causing poor dimensional stability

Used in vacuum skin-layer packaging,

meat, cheese, coffee, boil & roast-in bags

OPA

PA 6 Excellent flex cracking resistance

Better impact resistance

Better resistance to fats and solvents

PA 66 Lower water sorption

Better resistance to high temperatures

MX D6 Higher oxygen and aroma barrier even in high moistureenvironment

High temperatures resistance

Bioplastics

A wide family of materials featuring added value properties

Biobased non-biodegradable plastics

green-PE from ethanol using sugar can as raw material

PA from castor oil

Biobased and biodegradable plastics

PHAs synthesized by microorganisms

PLA from corn

Oil based plastics that are biodegradable

PBAT , PCL

+

+

Biodegradable plastics (bio-based or oil-based) with the help of

micro-organisms degrade into natural elements water, CO2 and minerals

In addition, biodegradable plastics have to be able to degrade within a shorter

timeframe under controlled moisture and temperature conditions transforming into

compost to meet specific standards requirements for compostable plastics

Testing for certification according to standard EN 13432

encompasses:

• Chemical test: Threshold values for heavy metals

• Biodegradability in controlled composting conditions: Proof must be made that at

least 90% of the organic material is converted into CO2 within 6 months.

• Disintegration: After 3 months composting and subsequent sifting through a 2 mm

sieve no more than 10% residue may remain

• Practical test of compostability in a semi-industrial (or industrial) composting

facility: No negative influence on the composting process is permitted

• Ecotoxicity test: Examination of the effect of resultant compost on plant growth

(agronomic test)

Starch based films TPS

Starch blends from corn, potato, etc. are chemically modified to extrude films

Good mechanical properties

Good printability

Good oxygen barrier

Soft touch

Antistatic

Low COF




Good printability

Good oxygen barrier

Soft touch

Antistatic

Low COF

Low thermal resistance

Very sensitive to water moisture

Opaque and matt appearance




Good printability

Good oxygen barrier

Soft touch

Antistatic

Low COF

Main applications include bags for shopping

or organic waste collection

Low thermal resistance

Very sensitive to water moisture

Opaque and matt appearance

Poly Lactide Acid PLA

Polymerized material after corn starch biofermentation process

Oriented BOPLA enhance mechanical strength

Good oxygen and aroma barrier

Good printability

Excellent transparency and gloss

Sealable at low temperatures

Good twisting and deadfold behaviour

Good resistance to oils





Good printability





Poor thermal resistance

Poor moisture barrier

Very low elongation

Stiff and glassy





Good printability





Used in food flexible packaging

Poor thermal resistance

Poor moisture barrier

Very low elongation

Stiff and glassy

Copolyester blends PLA + PBAT

Thermoplastic compounds for film extrusion (trade names Ecovio, Bio-Flex)

More flexible films with elongation similar to LDPE

Higher tear strength

Good printability


Pleasant soft touch

Copolyester blends PLA + PBAT

Thermoplastic compounds for film extrusion (trade names Ecovio, Bio-Flex)

More flexible films with elongation similar to LDPE

Higher tear strength

Good printability


Pleasant soft touch

Used in laminated films,

mulch agricultural film,

bags for shopping

or organic waste collection

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Multilayer films applications

Aseptic packaging, Retort

Puddings, soaps, sauces

PET/Al Foil/LDPEPET/Al Foil/PPCast

PE/Al Foil/PE/Papel/PE

Bag in Box Wine, juices… Met PET / EVA o LDPEMet PA / EVA o LDPE

LLDPE/TL/EVOH/TL/LLDPE

Dry food Cereals HDPE/HDPE/EVAHDPE/TL/PA/Ionomer

Snacks Chips, nuts… BOPP/LDPEPET/LDPE

Met BOPP / BOPPMet PET/LDPE

Coffee Coffee PET/MetPET/LLDPEPET/Al Foil/LDPE

Met BOPP/PE/TL/EVOH/TL/PE/LDPEPA PVdC coating / LLDPE

Cheese Cheese PET / PA / PE

Frozen meals Fish, vegetables EVA/LLDPE/EVALLDPE/HDPE/LLDPE

MAP Fruits, vegetables Cast Homo PP/ Random PPLLDPE/mLLDPE/LLDPE

PE Pr / PE

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Retort, Boiling, Hot Fill

PET Pr/ Al Foil / CPP

PET Pr / Al Foil / OPA / CPP

PET Pr / CPP

PET Pr / Al Foil / LDPE

PET Pr / PET Met / LDPE

PET Pr / OPA / LDPE

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Microwave

PET AlOx / OPA / CPP

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Aseptic bags and sackets

LDPE / Paper Pr / Al Foil / LDPE


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Wet towells, cosmetics

PET Pr / LDPE

PET Pr / PET Met / LDPE

PET Pr / BOPA / PET Met / LDPE


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Bag in Box

Met PET / EVA o LDPE

Met PA / EVA o LDPE

PET Pr / BOPA / PET Met / LDPE

LDPE /TL / EVOH / TL / LDPE

PA / EVOH / PA / TL / LDPE

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Dry food, cereals

HDPE / HDPE / LDPE

HDPE / HDPE / EVA

HDPE / TL / EVOH / TL / EVA

HDPE / PA / TL / EVA

HDPE / TL / PA / Ionomer

HDPE / TL / EVOH / Ionomer

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Pasta, rice

BOPP Pr / CPP

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Pet food

PET Pr / LDPE

PET Pr / PET Met / CPP

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Snacks, confectionery

BOPP Pr / LDPEPET Pr / LDPE

BOPP Pr / BOPP MetBOPP Pr / CPP

BOPP Pr /Met PET / CPP

RGB21/160/0


Coffee

PET Pr / Met PET o Al Foil / LDPE

BOPA Pr / Met PET / LDPE

BOPP Pr / Met PET / LDPE

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Cheese

OPA / LDPE

PET Pr/ OPA / LDPE

PET PVDC Pr / LDPE or CPP

PA / EVOH / PA / TL / PE

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Meat

PET Pr/ OPA / LDPE

PA / IonomerPA / TL / EVOH / TL /LDPE

PE / TL / PA / EVOH / PA / TL / PE

RGB21/160/0


Frozen food

EVA/LDPE/EVAMHDPE/HDPE/LDPE o EVA

PET Pr / LDPE o EVA

RGB21/160/0


Salad bag and lids

BOPP Pr / BOPP

BOPP Pr / CPP

PET Pr / LDPE

PET Pr / PET Pelable anti-fog

RGB21/160/0


Lids iogurt, jelly

PET Pr / Al Foil HS lacquer

PET Pr / PET Met HS lacquer

Pr Papel / PET Met HS lacquer

How to identify the different plastic film materials?

METHOD 1:

Infrared spectroscopy analysis FTIR

METHOD 2:

Using a surface energy pen test,

METHOD 2:


a lighter,

METHOD 2:


a lighter,

…… and a skilled nose

Film unknown???

Film unknown ???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Film unknown???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Film unknown ???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burnsslower

CPP

Film unknown ???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burns slower

CPP

Smellslike wax

Burns fasterDrips

PE

Film unknown???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burns slower

CPP

Smellslike wax

Burns fasterdrips

PE

SideNot

Treated

<38

BOPP

Film unknown???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burns slower

CPP

Smellslike wax

Burns fasterdrips

PE

SideNot

Treated

<38

BOPP

SideNot

treated

>38

Film unknown???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burns slower

CPP

Smellslike wax

Burns fasterdrips

PE

SideNot

treated

<38

BOPP

SideNot

treated

>38

BOPA

Smellslike

burned

hair

Film unknown???

Stretchable?

PE? CPP? CPA?

Yes

PET? BOPP? BOPA?

No

Smellslike

burnedhair

CPA

Smells likewax

Burns slower

CPP

Smellslike wax

Burns fasterdrips

PE

SideNot

treated

<38

BOPP

SideNot

treated

>38

BOPA

Smellslike

burned

hair

PET

KrispyBurns

brightly

Sweet smell

Thank you

Contacte with us:

www.aimplas.es

[email protected]

Tel. 96 136 60 40

www.facebook.com/aimplas

Twitter: @aimplas

http://www.aimplas.es/

mailto:[email protected]












What is AIMPLAS? - ComexiCTEC

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