The Universal Selection Source: Adhesives Ingredients

Formulation

Hot Melt Styrene-Isoprene-Styrene PSA for General Purpose Labels by Kraton

Applicable Type
Applicable Industrial Sectors

Typical Formulation Ingredients

Phase
Ingredient
Parts by weight
Styrene-isoprene-styrene copolymer (Kraton D-1163, Kraton) 
   
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    Hydrocarbon resin tackifier (Piccotac 95, Eastman Chemical) 
       
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    Naphthenic oil (Shellflex 371, Shell) 
       
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    Antioxidant (Irganox 1010, BASF) 
       
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    Typical Properties

    Properties
    Melt viscosity @ 177°C, Pas 
       
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    Rolling ball tack, cm 
       
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    Polyken probe tack, kg 
       
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    Loop tack, N/m 
       
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    180° Peel, N/m 
       
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    Shear adhesion failure temperature to Mylar (SAFT),°C 
       
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    Shear adhesion failure temperature to Kraft (SAFT),°C 
       
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    Holding power to steel, min 
       
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    Holding power to Kraft, min: 
       
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    Processing

       
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  • Applicable Base Polymer Properties

    Styrene block copolymers (SBCs) offer cohesion, strength, and heat resistance for both pressure sensitive adhesives (PSAs) and non-pressure sensitive adhesives. The styrene phase forms a physically crosslinked network in the adhesive at room temperature. Of the SBCs, styrene-isoprene-styrene (SIS) is most often used in hot melt PSAs. SIS polymers are generally preferred over styrene-butadiene-styrene (SBS) polymers for hot melt adhesives because the SIS polymers provide a higher level of tack and are less likely to form gels during processing.

    Resulting Properties

    A typical general purpose styrene-isoprene-styrene hot melt pressure sensitive adhesive is provided above. It can be used for tapes and labels and for bonding low energy surfaces such as plastic films. It has good tack and peel strength, and moderate temperature resistance.

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