Acrylic Adhesive (EP)
APSAEP is a cloth-supported acrylic pressure sensitive adhesive construction with silicone adhesive (2.9–3.1 mils) on one face and acrylic adhesive (1.9–2.1 mils) on the opposite face, built on a 3.0 mil cloth carrier. The acrylic side delivers 80+ oz/in peel to stainless steel (180°, 3-day dwell), 100+ oz/in to acrylic and glass (90° angle), and a service temperature range of −40°F to 302°F. The semi-bleached kraft release liner is 4.7 mils with an additional 2 mil polyester liner layer.
Key Properties
- Adhesion to Stainless Steel, Acrylic Side, 3 Days RT, 180°: 80+ oz/in (ASTM D3330, laminated to 2 mil polyester)
- Adhesion to Glass, Acrylic Side, 3 Days RT, 90°: 100+ oz/in (ASTM D3330, laminated to 2 mil aluminum foil)
- Adhesion to Polypropylene, Acrylic Side, 3 Days RT, 180°: 26 oz/in (ASTM D3330)
- Tack, Acrylic Adhesive (2 MIL Clear Polyester): 840 gm (ASTM D2979)
- Service Temperature Range, Acrylic Side: −40°F to 302°F
- Adhesive Thickness: 2.9–3.1 mils silicone / 1.9–2.1 mils acrylic / 3.0 mil cloth carrier
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Adhesive Type | Silicone & Acrylic | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Backing / Carrier | Cloth | — |
| Color | Clear | — |
| Liner | Semi-bleached kraft liner | — |
| Adhesive Thickness, Silicone Side | 2.9–3.1 mils ±0.2 | ASTM D3652 (Modified for Use with Non-Tape Product) |
| Adhesive Thickness, Acrylic Side | 1.9–2.1 mils ±0.2 | ASTM D3652 (Modified for Use with Non-Tape Product) |
| Liner Thickness, Polyester | 2 mils ±10 | ASTM D3652 (Modified for Use with Non-Tape Product) |
| Liner Thickness, Kraft | 4.7 mils ±10 | ASTM D3652 (Modified for Use with Non-Tape Product) |
| Carrier Thickness, Cloth | 3.0 mils ±10 | ASTM D3652 (Modified for Use with Non-Tape Product) |
Adhesion Properties — 180° Peel Angle (Laminated to 2 MIL Clear Polyester)
| Property | Value | Test Method |
| Adhesion to Stainless Steel, Acrylic Side, 15 Minutes | 50+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days @ 160°F | 38+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days RT | 80+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Acrylic, Acrylic Side, 3 Days RT | 76+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Glass, Acrylic Side, 3 Days RT | 76+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Polypropylene, Acrylic Side, 3 Days RT | 26 oz/in | ASTM D3330 (Modified for Dwell Time) |
Adhesion Properties — 90° Peel Angle
| Property | Value | Test Method |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days RT (2 MIL Clear Polyester) | 60 oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days RT, 180° (2 MIL Aluminum Foil) | 74 oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 15 Minutes (2 MIL Aluminum Foil) | 43 oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days @ 160°F (2 MIL Aluminum Foil) | 60 oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Stainless Steel, Acrylic Side, 3 Days RT (2 MIL Aluminum Foil) | 55 oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Acrylic, Acrylic Side, 3 Days RT (2 MIL Aluminum Foil) | 100+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Glass, Acrylic Side, 3 Days RT (2 MIL Aluminum Foil) | 100+ oz/in | ASTM D3330 (Modified for Dwell Time) |
| Adhesion to Polypropylene, Acrylic Side, 3 Days RT (2 MIL Aluminum Foil) | 22 oz/in | ASTM D3330 (Modified for Dwell Time) |
Mechanical Properties
| Property | Value | Test Method |
| Expected Shear Adhesion, Acrylic Adhesive, Laminated to 2 MIL Clear Polyester, 1 Hour Dwell (1 SQ IN, 4 LB Load) | 5 hours | ASTM D3654 — Method A |
| Expected Shear Adhesion, Acrylic Adhesive, Laminated to 2 MIL Aluminum Foil, 1 Hour Dwell (1 SQ IN, 4 LB Load) | 5 hours | ASTM D3654 — Method A |
| Tack, Acrylic Adhesive, Laminated to 2 MIL Clear Polyester | 840 gm | ASTM D2979 |
| Tack, Acrylic Adhesive, Laminated to 2 MIL Aluminum Foil | 820 gm | ASTM D2979 |
Thermal Properties
| Property | Value | Test Method |
| Service Temperature Range, Acrylic Side | −40°F to 302°F | — |
- Differential laminating of silicone rubber or silicone-coated substrates to metal, glass, or rigid plastic components
- Dual-surface bonding applications requiring compatibility with both silicone and polar substrates in a single construction
- Adhesive lamination of cloth-supported components in industrial converting
- High-temperature bonding on the acrylic side operating up to 302°F
- Precision die-cut adhesive assemblies requiring differential release characteristics
Common industries: Industrial manufacturing, silicone rubber converting, specialty lamination, electronics assembly, high-temperature converting.
APSAEP is a differential double-sided laminating adhesive construction featuring distinct adhesive chemistries on each face: a 2.9–3.1 mil silicone adhesive layer on one side and a 1.9–2.1 mil acrylic adhesive layer on the opposite side, separated by a 3.0 mil cloth carrier. The configuration is shipped with a semi-bleached kraft release liner (4.7 mil) plus a 2 mil polyester liner layer.
This differential construction allows the adhesive to bond to two substrate categories with very different surface chemistries — a silicone-compatible interface on one face (useful for silicone rubber or silicone-coated substrates) and an aggressive acrylic PSA on the other face for bonding to metals, glass, and rigid plastics.
The TDS publishes extensive adhesion data for the acrylic side across multiple substrates, angles (180° and 90°), and laminating films (2 mil clear polyester and 2 mil aluminum foil). Peel adhesion to stainless steel builds from 50+ oz/in at 15 minutes to 80+ oz/in at 3-day room-temperature dwell (180°, polyester laminate), with the 160°F heat-aged value at 38+ oz/in.
Adhesion to acrylic and glass reaches 100+ oz/in when tested with aluminum foil laminate at 90° peel angle. Polypropylene adhesion is 26 oz/in, confirming this is a polar-substrate-optimized adhesive. Shear adhesion is 5 hours under a 4 lb load (1 sq in) per ASTM D3654 Method A, and tack is 820–840 gm per ASTM D2979. Service temperature for the acrylic side extends from −40°F to 302°F.
What differentiates APSAEP from other acrylic adhesives?
APSAEP is a differential adhesive construction — silicone on one face, acrylic on the other, separated by a cloth carrier. This enables a single component to bond to both silicone-based substrates (which standard acrylics cannot adhere to) and polar substrates like metal and glass. Standard acrylic adhesives in the APSA family (APSAA3, APSAS3, APSAFS) are single-chemistry products, not differential constructions.
Why is peel adhesion important when selecting this adhesive?
For differential adhesives, peel adhesion must be verified on both faces across representative substrates. The APSAEP TDS publishes extensive acrylic-side peel data across stainless steel, acrylic, glass, and polypropylene at multiple peel angles (180° and 90°), dwell times (15 minutes / 3 days RT / 3 days @ 160°F), and laminate films (polyester and aluminum foil) — allowing specifiers to match test conditions to their application. The 26 oz/in polypropylene value confirms the acrylic side is polar-optimized.
What is the service temperature range for APSAEP?
The acrylic side has a service temperature range of −40°F to 302°F. The TDS does not publish a service temperature range for the silicone side separately; silicone adhesives typically support higher upper limits than acrylics.
Is APSAEP suitable for bonding to silicone substrates?
Yes — the silicone side of the differential construction is specifically designed for compatibility with silicone rubber and silicone-coated substrates, which are generally incompatible with standard acrylic adhesives. No specific regulatory compliance standards are listed on the TDS for this material.
How should APSAEP be specified?
Specify adhesive designation (APSAEP / Acrylic Adhesive EP), orientation (silicone side to silicone substrate / acrylic side to polar substrate), adhesive thicknesses (2.9–3.1 mils silicone / 1.9–2.1 mils acrylic), carrier (3.0 mil cloth), compliance requirements, and finished format.
