Matsui Fixer L | Air Dry Crosslinker That Lowers Cure Temp to 250°F for Water-Based Screen Printing Ink
Matsui
Matsui Fixer L — Fixer L is a dual-mechanism crosslinker for water-based acrylic inks. Unlike Fixer WF-N (which requires heat to activate), Fixer L crosslinks the acrylic binder through two pathways: it activates at lower heat temperatures (250°F+) AND it continues to crosslink at room temperature over 24–48 hours after printing. This makes it the correct solution for electric dryers, low-temperature tunnels, and shops where 320°F is difficult to consistently achieve.
Price range: $69.99 through $269.99
Description
Matsui Fixer L
Fixer L is a dual-mechanism crosslinker for water-based acrylic inks. Unlike Fixer WF-N (which requires heat to activate), Fixer L crosslinks the acrylic binder through two pathways: it activates at lower heat temperatures (250°F+) AND it continues to crosslink at room temperature over 24–48 hours after printing. This makes it the correct solution for electric dryers, low-temperature tunnels, and shops where 320°F is difficult to consistently achieve.
What It Does
When to Use This Additive
When your dryer cannot consistently reach 320°F — typically electric conveyor dryers, heat guns, or tunnel dryers with cold spots. Also useful for heat-sensitive fabrics where you intentionally want to run lower temperatures. Can be used alongside Fixer WF-N for maximum wash fastness.
The Complete Matsui Additive Lineup — All 13
Every water-based printing problem has an additive that fixes it. Here is the full lineup with dosages and what each solves:
| Additive | Dosage | What It Solves |
|---|---|---|
| Quick Additive | 6–9% | All-in-one: open time + wash fastness + soft hand. Best starting point for most jobs. |
| Retarder MG | 1–5% | Prevents ink drying in screen. Extends open time on press. |
| Fixer WF-N | 1–5% | Improves wash fastness. Lowers cure temp to 300°F (150°C). Most common fixer. |
| Softener MG | 1–4% | Improves fabric penetration. Softer hand feel and better adhesion. |
| RV Additive | 1–3% | Reduces viscosity without weakening resin. Better flow and fabric penetration. |
| Thickener B | 0.25–1% | Increases viscosity. Controls halftone dot spread. Fine-detail work. |
| Fixer L ← This Product | 1–3% | Lowers cure temp to 250°F. For electric dryers or heat-sensitive fabrics. |
| Fixer V | 2–3% | ⚠️ For PU binder inks ONLY (Soft-Tex 350 series). NOT interchangeable with Fixer WF-N. |
| Retarder SP-1 / Flow | Varies | Improves flow of thick inks without reducing viscosity. For high-viscosity bases. |
| Emacol R-600-E | Varies | Long-bodied thickener for halftone dot retention. Alternative to Thickener B. |
| Puff Foaming Base HT | Varies | Creates 3D puff effect when flash-heated. Mix with any water-based ink. |
| Phantom Clear | Standalone | Disappears when dry. Reappears when wet (sweat). For activewear specialty prints. |
| Discharge Activator | 3–8% | ⚠️ REQUIRED for discharge mode. Enables chemistry on dark 100% cotton. 12-hr pot life. |
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | Matsui Fixer L |
| SKU | Matsui Fixer L |
| Type | Air Dry Crosslinker That Lowers Cure Temp to 250°F for Water-Based Screen Printing Ink |
| Dosage | 1–3% by weight of total ink |
| Problem Solved | Dryer cannot reach 320°F — insufficient cure temperature leaving prints under-crosslinked and with poor wash fastness. |
| Compatible Inks | All Matsui acrylic water-based inks. Can be used instead of or alongside Fixer WF-N. |
| Limits | 1–3% dosage. Keep total additives under 15%. |
| Available Sizes | Quart, Gallon |
| Formulation | PVC-free, OEKO-TEX® Standard 100 certified |
| Storage | 65°F to 95°F (18°C to 35°C). Avoid direct sunlight. |
| Cleanup | Water and mild soap/detergent |
Technical Sheets / Safety Data Sheets / Documents
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