PROPERTIES
Characteristics
TAFMER™ polyolefin elastomer is a low-crystallinity alpha-olefin copolymer that features softness, low melting point, and compatibility with polyethylene (PE) and polypropylene (PP).
TAFMER™ enables the film engineer or package designer to:
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Optimize Heat Seal Properties
and Retain Transparency
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Maximize Impact Resistance
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Adjust Easy-Peel Properties
TAFMER™ for widening heat seal window
TAFMER™ polyolefin elastomer is a low-crystallinity alpha-olefin copolymer that features softness, low melting point, and compatibility with polyethylene (PE) and polypropylene (PP).
Detailed results and conditions
Improvement of appearance after heat-sealing
A conventional structure of BOPET/CPP provides good appearance with no significant shrinkage after heat sealing.
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Conventional structure -
Heat sealed at 140℃
Replacing BOPET with BOPP in the substrate, however, leads to poor appearance due to the lower heat resistance of BOPP.
Lowering SIT(seal initiation temperature) is a key factor for better appearance of mono-material packaging.
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All-PP structure with typical CPP -
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Heat sealed at 100℃
Not sealable -
Heat sealed at 140℃
Poor appearance
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TAFMER™ for PP sealant
Lowering the SIT of cast PP films or increasing seal strength of BOPP film secures a wider melting temperature gap between the sealant and substrate layers.
TAFMER™ for PP sealant
- TAFMER™ BL is a 1-butene based copolymer which is highly compatible with PP.
- TAFMER™ BL significantly lowers and widens the range of HSIT.
TAFMER™ for BOPP sealant
- TAFMER™ XM is a propylene based copolymer which is miscible in PP.
- Low SIT can be achieved by blending TAFMER™ XM with PP.
- TAFMER™ PN is a propylene based material with remarkably high heat resistance in spite of its softness.
- TAFMER™ PN is miscible with PP and has an ability to improve seal strength of BOPP film.
- A target seal strength of 8 – 15 N/15mm can be achieved by adding TAFMER™ XM to the sealant layer, and adding TAFMER™ PN to the neighboring layer.
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TAFMER™ for PE sealantt
- TAFMER™ A is an ethylene based copolymer which is miscible in LLDPE.
- A target SIT < 100 ℃ can be achieved by blending TAFMER™ A with LLDPE.
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