transparent high-barrier retortable film … - introduction.pdf · 2-ply structure for retort pouch...

Contact

2009 / 08 / 1000

TOKYO HEAD OFFICEOTE-CENTER BUILDING, 1-1-3 OTEMACHI, CHIYODAKU, TOKYO:100-8115FILM SALES DEPARTMENT, TEL: +81-3-6701-1491 FAX: +81-3-6701-1476

CHINAKURARAY SHANGHAI Co.,Ltd18F JIUSHE FUXING BUILDING, 918 HUAIHAIROAD(M), SHANGHAI: 200020EVAL GROUPTEL: +86-21-6415-1146 FAX: +86-21-6415-1148

http://www.kurarister.jp e-mail : [email protected]

www.kurarister.com e-mail: [email protected]

EUROPEKURARAY (EVAL EUROPE nv), HAVEN 1053, NIEUWE WEG 1 - BUS 10 B-2070 ZWIJNDRECHT (ANTWERP), BELGIUMTEL.: +32 3 250 97 22 FAX: +32 3 250 97 45 E-mail: [email protected]

www.kurarister.com E-mail: [email protected]

AMERICASKURARAY AMERICA INC. 2625 BAY AREA BLVD, SUITE 300 HOUSTON, TX 77058, USATEL.: (800) 423 9762 FAX: (281) 204 4622

SHANGHAI

ANTWERP

TOKYO

HOUSTON

TRANSPARENT HIGH-BARRIERRETORTABLE FILM

111544 EVAL - KURARISTER.indd 1 29/04/11 14:57

1.

3

Structure of KURARISTER™ film

Characteristics2.

Base film

Polymeric matrix Inorganic compound

Cross section of KURARISTER™ Magnified picture of barrier coating

O2 O2

O2

O2O2

O2

O2

Reliable high gas barrier performance

■The highest gas barrier level among existing plastic films■Retortable, suitable for use with common retort methods■High resistance to elongation, flexing and folding

2-ply structure for retort pouch

■OPA-based KURARISTER™ N combines mechanical strength and high-barrier properties.■Excellent toughness and flexibility provided by the OPA base film.■Cost reduction by using a 2-ply structure of KURARISTER™ N / Sealing layer.

Alternative to aluminum foil

■Transparent → Quality checking■Printable without surface treatment → High impact image and shelf appeal■Compatible with metal detectors → Food safety■Microwavable → Convenience■Recoverable without toxic emissions → Reduced environmental impact

■High adhesive strength■Suitable to any filling method

■Weight reduction of package

Food safety:KURARISTER™ has passed the specification/standard test of Official Notice No. 370(1959) from Japan's Ministry of Health and Welfare. KURARISTER™ may be used for indirect food contact as outlined by the US FDA's CFR176.170, CFR177.1390, CFR177.1395 and is approved for use as a food package material. KURARISTER™ is approved for use as a plastic material under the EU Directive No.1935/2004/EC. For additional information, please contact us.

What is KURARISTER™?

KURARISTER™ is a transparent high gas barrier retortable film, with Kuraray´s proprietary organic/inorganic hybrid composite coated on both sides of a base substrate.The coating layers are extremely durable and provide reliable high gas barrier properties. KURARISTER™ C is based on PET film and KURARISTER™ N is based on bi-axially oriented PA film, which can be used for a wide range of packaging applications.

Base film

PET

OPA

Grade

KURARISTER™ C

KURARISTER™ N

Polymericmatrix

Hybrid

Inorganiccompound

2

A clear choice for retort packaging

P.3

P.3

P.4

P.5

P.6

P.7

Contents


Characteristics

Gas Barrier Performance

Performance Testing

Physical Properties

Applications & Package Structures

1.

2.

3.

4.

5.

6.

Kuraray Co. Ltd. became known as a leader in gas barrier technology with EVAL™ EVOH. EVAL™ resins

and films used in food packaging preserve product flavour and aroma, and prolong product freshness

and shelf life. KURARISTER™ is a new transparent film for lamination, developed to extend these

properties into flexible barrier retort packaging. KURARISTER™ is not an EVAL™ product, but rather

uses Kuraray's proprietary organic/inorganic hybrid technology.


1.

3

Structure of KURARISTER™ film

Characteristics2.

Base film

Polymeric matrix Inorganic compound

Cross section of KURARISTER™ Magnified picture of barrier coating

O2 O2

O2

O2O2

O2

O2

Reliable high gas barrier performance

■The highest gas barrier level among existing plastic films■Retortable, suitable for use with common retort methods■High resistance to elongation, flexing and folding

2-ply structure for retort pouch

■OPA-based KURARISTER™ N combines mechanical strength and high-barrier properties.■Excellent toughness and flexibility provided by the OPA base film.■Cost reduction by using a 2-ply structure of KURARISTER™ N / Sealing layer.

Alternative to aluminum foil

■Transparent → Quality checking■Printable without surface treatment → High impact image and shelf appeal■Compatible with metal detectors → Food safety■Microwavable → Convenience■Recoverable without toxic emissions → Reduced environmental impact

■High adhesive strength■Suitable to any filling method

■Weight reduction of package

Food safety:KURARISTER™ has passed the specification/standard test of Official Notice No. 370(1959) from Japan's Ministry of Health and Welfare. KURARISTER™ may be used for indirect food contact as outlined by the US FDA's CFR176.170, CFR177.1390, CFR177.1395 and is approved for use as a food package material. KURARISTER™ is approved for use as a plastic material under the EU Directive No.1935/2004/EC. For additional information, please contact us.


KURARISTER™ is a transparent high gas barrier retortable film, with Kuraray´s proprietary organic/inorganic hybrid composite coated on both sides of a base substrate.The coating layers are extremely durable and provide reliable high gas barrier properties. KURARISTER™ C is based on PET film and KURARISTER™ N is based on bi-axially oriented PA film, which can be used for a wide range of packaging applications.

Base film

PET

OPA

Grade

KURARISTER™ C

KURARISTER™ N

Polymericmatrix

Hybrid

Inorganiccompound

2

A clear choice for retort packaging

P.3

P.3

P.4

P.5

P.6

P.7

Contents


Characteristics

Gas Barrier Performance

Performance Testing

Physical Properties

Applications & Package Structures

1.

2.

3.

4.

5.

6.

Kuraray Co. Ltd. became known as a leader in gas barrier technology with EVAL™ EVOH. EVAL™ resins

and films used in food packaging preserve product flavour and aroma, and prolong product freshness

and shelf life. KURARISTER™ is a new transparent film for lamination, developed to extend these

properties into flexible barrier retort packaging. KURARISTER™ is not an EVAL™ product, but rather

uses Kuraray's proprietary organic/inorganic hybrid technology.


5

4-2.Lidding film

4-1.Vacuum pouch

Lid film

Pouch Silica ball

Gel (Colour changes to blue with oxygen ingress)

Gel(Colour changes to blue with oxygen ingress)

KURARISTER™

Beforeretort

1dayafterretort

Inorganic coated PET PVDC film

Beforeretort

20daysafterretort

KURARISTER™ Inorganic coated PET PVDC film

The test resu l t shows that KURARISTER™ film maintains its gas barrier properties after the stress of pouch vacuuming and retort treatment.

The test result shows that the stress of heat sealing and retort treatment has little impact on KURARISTER™´s gas barrier properties.

Aluminum cup

Test conditions * Retort condition : 120℃ - 30 minutes, water immersion* Storage condition : 23℃50%RH

Test sample film structuresPET 12μm

PVDCfilm 15μm

OPA 15μm

CPP 70μm

PVDC film

Inorganic coated PET 12μm

OPA 15μm

CPP 70μm

Inorganic coated PET

KURARISTER™ N #15

CPP 70μm

KURARISTER™

4. Performance Testing

KURARISTER™ protects food contents from oxidation with its reliable high gas barrier performance. The following are the results of storage tests before and after retort, using a methylene blue indicator method*.

*Methylene blue method: Methylene blue gel changes colour with oxidation, allowing to effectively visualise oxygen permeation into a package.

4

Oxygen transmission rate

3-1. Oxygen Transmission Rates

* OTR Measurement condition : 20℃ 85%RH / 100%RH*2 KURARISTER™ C (3 layers) : KURARISTER™ C #12 / BON15μm / CPP50μm KURARISTER™ N (2 layers) : KURARISTER™ N #15 / OPA50μm

Unit : cc/m2.day.atm

0.30.40.40.40.40.5

0.50.70.70.70.70.7

120℃ 30 min120℃ 60 min120℃ 120 min120℃ 30 min120℃ 30 min

water immersion water immersion water immersion spraysteam

Retort

before retortMethod Condition

KURARISTER™ C KURARISTER™ N

3-2. OTR after retort and flexing

* OTR measurement condition : 20℃ 85% / 100%RH* Retort condition : 120℃ -30min., water immersion

*2 KURARISTER™ C (3 layers) : KURARISTER™ C #12 / OPA15μm / CPP50μm KURARISTER™ N (2 layers) : KURARISTER™ N #15 / CPP50μm Inorganic coated PET (3 layers) : Inorganic coated PET 12μm / OPA15μm / CPP50μm

Gelbo 0 cycle Gelbo 10 cycles Gelbo 50 cycles

6

4

2

0cc/m

2 .da

y.at

m

3-3. OTR after elongation and scratch testing

* Film before retort* OTR measurement condition: 20℃ 85%RH

0% elongation 5% elongation

1

0.8

0.6

0.4

0.2

0

cc/m

2 .da

y.at

m

KURARISTER™ C

KURARISTER™ N


KURARISTER™ C

KURARISTER™ N


3. Gas Barrier Performance

KURARISTER™ shows high gas barrier performance in a wide range of retort methods and conditions.

Reliable oxygen transmission rate after physical stressKURARISTER™ has high resistance to physical stress such as flex, elongation, friction and folding due to its durable coating layers. Such stress has little impact on KURARISTER™ gas barrier properties.


5

4-2.Lidding film

4-1.Vacuum pouch

Lid film

Pouch Silica ball

Gel (Colour changes to blue with oxygen ingress)

Gel(Colour changes to blue with oxygen ingress)

KURARISTER™

Beforeretort

1dayafterretort

Inorganic coated PET PVDC film

Beforeretort

20daysafterretort

KURARISTER™ Inorganic coated PET PVDC film

The test resu l t shows that KURARISTER™ film maintains its gas barrier properties after the stress of pouch vacuuming and retort treatment.

The test result shows that the stress of heat sealing and retort treatment has little impact on KURARISTER™´s gas barrier properties.

Aluminum cup

Test conditions * Retort condition : 120℃ - 30 minutes, water immersion* Storage condition : 23℃50%RH

Test sample film structuresPET 12μm

PVDCfilm 15μm

OPA 15μm

CPP 70μm

PVDC film

Inorganic coated PET 12μm

OPA 15μm

CPP 70μm


KURARISTER™ N #15

CPP 70μm

KURARISTER™

4. Performance Testing

KURARISTER™ protects food contents from oxidation with its reliable high gas barrier performance. The following are the results of storage tests before and after retort, using a methylene blue indicator method*.

*Methylene blue method: Methylene blue gel changes colour with oxidation, allowing to effectively visualise oxygen permeation into a package.

4

Oxygen transmission rate

3-1. Oxygen Transmission Rates

* OTR Measurement condition : 20℃ 85%RH / 100%RH*2 KURARISTER™ C (3 layers) : KURARISTER™ C #12 / BON15μm / CPP50μm KURARISTER™ N (2 layers) : KURARISTER™ N #15 / OPA50μm

Unit : cc/m2.day.atm

0.30.40.40.40.40.5

0.50.70.70.70.70.7

120℃ 30 min120℃ 60 min120℃ 120 min120℃ 30 min120℃ 30 min

water immersion water immersion water immersion spraysteam

Retort

before retortMethod Condition

KURARISTER™ C KURARISTER™ N

3-2. OTR after retort and flexing

* OTR measurement condition : 20℃ 85% / 100%RH* Retort condition : 120℃ -30min., water immersion

*2 KURARISTER™ C (3 layers) : KURARISTER™ C #12 / OPA15μm / CPP50μm KURARISTER™ N (2 layers) : KURARISTER™ N #15 / CPP50μm Inorganic coated PET (3 layers) : Inorganic coated PET 12μm / OPA15μm / CPP50μm

Gelbo 0 cycle Gelbo 10 cycles Gelbo 50 cycles

6

4

2

0cc/m

2 .da

y.at

m

3-3. OTR after elongation and scratch testing

* Film before retort* OTR measurement condition: 20℃ 85%RH

0% elongation 5% elongation

1

0.8

0.6

0.4

0.2

0

cc/m

2 .da

y.at

m

KURARISTER™ C

KURARISTER™ N


KURARISTER™ C

KURARISTER™ N


3. Gas Barrier Performance

KURARISTER™ shows high gas barrier performance in a wide range of retort methods and conditions.

Reliable oxygen transmission rate after physical stressKURARISTER™ has high resistance to physical stress such as flex, elongation, friction and folding due to its durable coating layers. Such stress has little impact on KURARISTER™ gas barrier properties.


7

6-1. Application examples

Vacuum pouch

Lidding film

VFFS

Retail food pouch (SUP & flat pouch)

Package type Content

Cob corn, potato, beet, pet food, etc.

Diced fruits, desserts, vegetables, etc.

Institutional foods (sauce, soup, pickles, puree, etc.)

Retort food in general

(sauce, soup, cooked rice, tuna, MRE, meat & poultry, etc.)

6-2. Typical retort film structure and examples of structure simplification with KURARISTER™

・Lighter weight packaging・All-plastic structure

・Lighter weight packaging・Less lamination・Cost reduction

print

adhesive

4 layers

3 layers

OPA

OPA

sealant

sealant

PET

Barrier PET

Al foil/PVDCfilm

3 layers

2 layers

KURARISTER™ C

KURARISTER™ N

OPA

sealant

sealant

6. Applications and Package Structures

Note - The information and data contained in this document are believed to be correct and are given in good faith. However, no liability, warranty or guarantee of final product performance is created by this document. No freedom from any patent is granted or to be inferred. This document does not constitute a sales specification and the Kuraray Co., Ltd. Sales Contract General Terms and Conditions continue to apply.

6

5-1. Physical Properties

2302601301103.12.53232

0.630.64＞54931.7

Elongation at Break

Tensile Modulus

Slippage

COF

Tensile Strengthat Break MPa

%

GPa

degree

µ

ItemMDTDMDTDMDTDMDTDMDTD

Wetting IndexTotal Light Transmission Haze

dyne/cm%%

Unit Measurement method

ISO1184

Kuraray Method

JIS Z7105

JIS K6768

KURARISTER™ N2201701201705.45.12628

0.500.54＞54922.2

KURARISTER™ C

* Measurement condition : 23℃50%RH

* Measurement condition : 23℃, 50%RH* Retort method : Steam* Film structure : KURARISTER™ N15 / CPP50µm OPA 15µm / CPP50µm

5-2. Impact strength

before retort

Retort120℃30 min. retort

2

1.5

1

0.5

0

kg.c

m

KURARISTER™ N

OPA

5. Physical Properties

KURARISTER™ provides physical properties equivalent to those of the PET or OPA base film.

KURARISTER™ N impact strength before and after retortThe base OPA substrate is protected from oxidation during the retort process by the high gas barrier of the coating layers. As a result, KURARISTER™ N maintains its mechanical properties after retort even better than a normal untreated OPA film. This combination of reliable mechanical and high-barrier properties makes it suitable for use in cost-saving 2-ply pouch structures.


Contact

2009 / 08 / 1000

TOKYO HEAD OFFICEOTE-CENTER BUILDING, 1-1-3 OTEMACHI, CHIYODAKU, TOKYO:100-8115FILM SALES DEPARTMENT, TEL: +81-3-6701-1491 FAX: +81-3-6701-1476

CHINAKURARAY SHANGHAI Co.,Ltd18F JIUSHE FUXING BUILDING, 918 HUAIHAIROAD(M), SHANGHAI: 200020EVAL GROUPTEL: +86-21-6415-1146 FAX: +86-21-6415-1148

http://www.kurarister.jp e-mail: [email protected]


EUROPEKURARAY (EVAL EUROPE nv), HAVEN 1053, NIEUWE WEG 1 - BUS 10 B-2070 ZWIJNDRECHT (ANTWERP), BELGIUMTEL.: +32 3 250 97 22 FAX: +32 3 250 97 45 E-mail: [email protected]


AMERICASKURARAY AMERICA INC. 2625 BAY AREA BLVD, SUITE 300 HOUSTON, TX 77058, USATEL.: (800) 423 9762 FAX: (281) 204 4622

SHANGHAI

ANTWERP

TOKYO

HOUSTON

TRANSPARENT HIGH-BARRIERRETORTABLE FILM


transparent high-barrier retortable film … - introduction.pdf · 2-ply structure for retort pouch...

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