SIS (Styrene-Isoprene-Styrene) — Thermoplastic Elastomer
SIS is a styrene-isoprene-styrene block copolymer and the standard base polymer for pressure sensitive hot-melt adhesives. Allzone supplies SIS to Canadian adhesive and tape manufacturers with the grade confirmed against supplier documentation before quotation.
At a glance
- Product
- SIS (Styrene-Isoprene-Styrene)
- Grades
- Thermoplastic Elastomer
- Typical applications
- Pressure sensitive hot-melt adhesives for tapes and labels · Hygiene product construction and elastic attachment adhesives · Assembly and packaging hot-melt formulations
- Packaging
- Packaging confirmed at quotation
- • Certificate of Analysis is provided against the confirmed shipment, grade and batch.
- • Manufacturer TDS and SDS are subject to grade and supplier confirmation and are available on request.
- • Grades, packaging and origin above are indicative sourcing options and are confirmed at quotation.
Available grades from container-direct sourcing
Thermoplastic Elastomer
Grade and specification confirmed against supplier technical data sheet at quotation.
Typical applications
- Pressure sensitive hot-melt adhesives for tapes and labels
- Hygiene product construction and elastic attachment adhesives
- Assembly and packaging hot-melt formulations
- Sealants and modified bitumen compounds
Why Canadian buyers choose us
- Container-direct sourcing coordinated through our Ontario logistics partner
- Supplier documentation (TDS, SDS, COA) requested and shared before order confirmation
- Specifications confirmed in writing at quotation stage — no assumed values
- LTL and FTL freight across Ontario, Quebec and Western Canada
- Quantities reviewed per enquiry, from smaller lots to full container loads
Typical industries served
Technical & procurement detail
Functional role of sis (styrene-isoprene-styrene)+
The polystyrene end blocks act as physical crosslinks that give cohesive strength, while the soft isoprene mid-block provides the tack and compliance a pressure sensitive adhesive needs. Because the crosslinks are thermally reversible, the compound can be melted, coated and re-melted without cure chemistry.
Selecting the right grade+
Styrene content, diblock ratio, molecular weight and whether the polymer is linear or radial control tack, cohesion, melt viscosity and coating temperature. Adhesive type — tape, label, hygiene or assembly — and the tackifier and oil system it will be compounded with drive the selection.
Documentation and specification+
Properties differ between producers and between grades of the same material. Allzone confirms the applicable grade with the supplier before quoting and shares the technical data sheet and safety data sheet for the exact material offered, so the values you evaluate are the values you receive.
Frequently asked questions
When is SIS chosen instead of SBS?+
SIS is preferred for pressure sensitive adhesives because the isoprene mid-block gives higher tack; SBS is typically chosen where cohesive strength, hot-melt assembly performance or bitumen modification matters more.
Which grade will I be quoted?+
The grade is set by your specification. Share the target performance, process conditions and any customer or regulatory requirement in the RFQ and the matching grade is confirmed with the supplier before quotation.
What packaging is available?+
Packaging is confirmed with the supplier at quotation for the grade and quantity discussed.
Can you deliver across Ontario and Quebec?+
Yes. LTL and FTL freight is arranged across Ontario, Quebec and Western Canada, with container-direct supply for repeat volumes.
Technical knowledge for SIS Styrene-Isoprene-Styrene Supplier — Canada
Engineering and purchasing guidance written for this material — understand it, apply it, compare options, specify a grade, and fix production problems.
Application Guides
Comparison Articles
Buying Guides
Related products
Materials commonly quoted alongside SIS (Styrene-Isoprene-Styrene) by the same plants.
Calcium Carbonate (CaCO3) Filler & Masterbatch
Mineral filler — raffia woven sacks and FIBC liners
Talc Filler & Talc Masterbatch
Mineral carrier and flow aid — polypropylene automotive bumpers and interior trim
Barium Sulfate
Mineral filler — density and sound damping compounds
Need a quote on SIS (Styrene-Isoprene-Styrene)?
Request pricing, TDS/SDS and available documentation. We usually acknowledge enquiries within one business day; samples are subject to supplier availability and product classification.