Introduction of L-MODU for BOPP(Idemitsu) · Introduction of L-MODUTM as a modifier for BOPP films Performance Materials Laboratories 1607-03 1 / 16

Introduction of L-MODUTM

as a modifier for BOPP films

Performance Materials Laboratories

1 / 161607-03

What is L-MODUTM...?

Melt viscosity (mPa・s@190ºC)Molecular weight highlow

mel

ting

poin

t(ºC

)

Rigid

Soft

APAOAPAOAPAOAPAOAPAO

104102 1081060

50

100

150 PP WAX

HDPE

LLDPEPE WAX

IPP

L-MODUTM

L-MODUTM has been developed by Idemitsu Kosan Co.,Ltd. with ouroriginal metallocene catalyst technology. It has some unique feature.

Low Crystallinity

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Atactic PP Low Isotactic PP High Isotactic PP

Special feature of L-MODUTM

L-MODUTM

Melting point HighNone

Touch of sense Hard

Low

SoftSticky

Crystallization rate FastSlowNo crystallization

L-MODUTM is new type polypropylene with characteristics of low crystallinity,low melting point and softness. It is controlled molecular stereo-regularity byproducing with Idemitsu`s metallocene catalyst.

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・Low crystalline ・Soft・Elastomer and Plastomer

High crystalline High stiffness

Amorphous

Isotactic

Atactic

Stereo regularity

high

Conventional catalyst

低立体規則性領域

Stereo regularity distribution;wide

[mmmm] ≒100

[mmmm] ≒6

IDEMITSU metallocene catalyst

Low crystalline, Softness

Partially Low Stereo regularity

Primary structure of L-MODUTM

Stereo regularity distribution;narrow

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Typical Properties of L-MODUTM

Test method unitL-MODUTM

S400 S600 S901Melt Flow Rate (230℃, 2.16kg)

ASTMD1238 g/10min 2,000 350 50

Molecular Weight GPC-Idemitsu method ― 45,000 75,000 130,000

Density ISO 1183-gradient tube method kg/m3 870 870 870

Melting Point DSC-Idemitsu method※1 ºC 80 80 80

Tensile Modulus Idemitsu method※2 MPa 90 90 110Tensile elongation at brake

Idemitsu method % 600 800 900※1：-40ºC (5min.)→10ºC/min.(rate)→220ºC※2 JIS-K 7113-2, Half-size specimen

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Proposals of L-MODUTM for PP modifier

Effects for PP・Low crystallinity・Softness・Good compatibility

with PP・Slowing down

crystallization rate・Reducing spherulite

size

◇ for CPP film・Excellent transparency

and gloss・Good thermoformability・Appropriate softness・Good stability of additives

bleeding-out

◇ for BOPP film・Excellent stretchability

→ Better thickness uniformity

→ Especially for high crystallinity PP

→ Improvement of stretching ratio

・Excellent transparency and gloss

L-MODUTM

・Homo polypropylene ・Low tacticity・Narrow molecular

weight distribution ・Narrow molecular

composition distribution

L-MODUTM can improves various properties !

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L-MODUTM-20%

P/E Copolymer -20%

L-MODUTM has good compatibility with PP in comparison withcopolymer type soft materials.

Blending and mixing various propylene-based soft materials to homo PP

Sea-island structure

Sea-island structure

Compatibility of L-MODUTM with PP

Homogeneous structure

P/E Copolymer -20%

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Homo PP + L-MODUTM 10%

Homo PP

Flash DSC (Mettler Toledo)condition: isothermal crystallization after cooling from 230ºC to25ºCat 2000ºC/min.

Crystallization rate is delayed by adding L-MODUTM to PP.⇨ Good Transferability of mold and good formability(e.g. stretchability, spinnability)

Random copolymer PP

Random copolymer PP + L-MODUTM 10%

Control of crystallization rate of PP

0.0 0.1 0.2 0.3 0.4 0.5←en

doth

erm

ic

e

xoth

erm

ic→

Time in isothermal crystallization (sec)

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Control of spherulite crystallization

General PP High stiffnessPP+ L-MODUTM S901 5%

Normal PP：MFR = 3.0g/10min、Tm = 160ºC／high stiffness PP：MFR = 3.0g/10min、Tm = 168ºCL-MODUTM S901：MFR = 50g/10min、Tm = 80ºC／ 1mm sheet／ cooling roll temp.：30ºC

【Cross section view photo of sheet measured by phase contrast microscope】

□ Stretchability of high stiffness PP is lower than one of general PP becauseof high spherulite density□ By adding small amount of L-MODUTM to high stiffness PP, spherulite

density and size become less or smaller.⇨ Stretchability can be improved by Adding L-MODUTM

High stiffness PP

Spherulite size：largeSpherulite density：medium

Spherulite size：largeSpherulite density：high

Sperulite size：smallSpherulite density：low

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L-MODUTM localize only in amorphous regions.

Lamellar structure

Amorphous region

L-MODUTM

Effects on melting point and higher order structureby adding L-MODU to PP

Adding L-MODUTM to PP has little effect on melting pointbecause L-MODUTM localize only in amorphous regions.

End

ther

mic

Exo

ther

mic

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Advantage of L-MODUTM to BOPP films

Adding L-MODUTM to BOPP films

<Addition to PP for BOPP>Wide process windowBetter thickness uniformityProductivity improvement

Excellent stretchability<Addition to high stiffness PP>

Enable to produce BOPP films easily even by using high stiffness PPBetter stiffness compared to PP for BOPP

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Good StretcabilityEnable to produce BOPP films easily even by usinghigh stiffness PP

High stiffness PP：Tm = 168ºC：MFR = 3.0PP for BOPP：Tm = 160ºC：MFR = 3.0Sheet thickness：1000μm

Stretching method：sequentialMD stretching ratioBy roll stretching：5.0TD stretching ratioBy table stretcher：9.5

0

0.2

0.4

0.6

0.8

1

1.2

1 2 3 4 5 6 7 8 9 10

TDSt

retc

hing

forc

e(k

gf)

TD Stretching ratio (-)※MD→TD stretching temp. are in parenthesis

Decrease in yield stress

― High stiffness PP (152ºC→169ºC)※― PP for BOPP (147℃→165℃)※― High stiffness PP + L-MODUTM (152ºC→169ºC)※

Advantage of L-MODUTM to high stiffness PP

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Mechanism of stretchability improvementwith L-MODUTM

PP for BOPP High stiffness PP

≒160℃ ≒170℃ ≒170℃

Increase of amorphous region

Keeping lamella thickness

High stiffness PP + L-MODUTM

Better Stiffness compared to PP for BOPP by usinghigh stiffness PP + L-MODUTM

Lamellar structure L-MODUTM

Amorphousregion

Good

Good

No good

Excellent Very good

Good

Melting Point(depend on lamellar thickness)

Stretchability(depend on amount of amorphous region)

Stiffness(proportion of lamellar and amorphous)

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Good stretchability (wide process window)Better thickness uniformityProductivity improvement

◆PP for BOPP◆PP for BOPP + L-MODUTM 5%

Expansion of stretchable temperature range

Improvement of thickness uniformity

Sheet thickness：550μm

Stretching method：sequential

Stretching ratio：MD 5×TD 7

Stretching method：table stretcher

Stretching ratio：10mm/sec

Film thickness ：16μm

Brake melt

Temperature/TDO

Stan

dard

dev

iatio

n of

thic

knes

s

good

bad

Low High

Advantage of L-MODUTM to PP for BOPP

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Recommended use of L-MODUTM for BOPP films

1. Preventing separation of AB agents

2. Productivity improvement for BOPP films for very low temp. sealing

3. Transparency improvement of thick BOPP films

4. Productivity improvement for heat shrinkable BOPP films

5. Productivity improvement for capacitor films

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Data in this Catalogue shows sample figures measured under certain specific conditions.Usage of products in this Catalogue does not warrant the successful results of

applications of the product for specific usage.In case of product being used for purpose and usage introduced in this Catalogue,

please pay attention to industrial property rights of third party which may relate to such use.In case of product being used for medical device, cosmetics, food and beverage

container and toys, please consult with the manufacturer before such use.Please note that the content of this Catalogue may be altered from time to time

according to improvement of products without prior notice.Figures of physical characteristics of other resins than the products have been

referred from other catalogues and sources thereof..

Attention for evaluation of L-MODUTM

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