Matsui Fixer V | Wash & Crock Fastness Crosslinker for Polyurethane Water-Based Screen Printing Inks

Matsui

Matsui Fixer V — Fixer V is a crosslinker formulated specifically for polyurethane (PU) binder water-based inks. ⚠️ It is NOT compatible with standard Matsui acrylic inks and is NOT interchangeable with Fixer WF-N. The Matsui 350 Series uses a PU rubber binder instead of the standard acrylic binder — this fundamentally different chemistry requires a different fixer. Using Fixer WF-N on PU inks, or Fixer V on acrylic inks, will result in inadequate wash fastness.

🎯 Problem it solves: Poor wash and crock fastness in polyurethane (PU) binder water-based inks — specifically the Matsui 350 Series (Soft-Tex White 350, Clear 350G, Clear 350B).

💊 Dosage: 2–3% by weight of total ink

✓2–3% by weight of total ink

✓Matsui Acrylic Inks Compatible

✓PVC-Free

✓OEKO-TEX® Certified

🚚 FREE Shipping on orders over $200|📦 In-Stock: Usually ships same or next business day|🏪 Free In-Store Pickup · San Antonio, TX

Price range: $99.99 through $1,799.99

Description

Matsui Fixer V

Fixer V is a crosslinker formulated specifically for polyurethane (PU) binder water-based inks. ⚠️ It is NOT compatible with standard Matsui acrylic inks and is NOT interchangeable with Fixer WF-N. The Matsui 350 Series uses a PU rubber binder instead of the standard acrylic binder — this fundamentally different chemistry requires a different fixer. Using Fixer WF-N on PU inks, or Fixer V on acrylic inks, will result in inadequate wash fastness.

What It Does

🧺

Wash Fastness for PU Inks

Crosslinks the polyurethane binder during heat curing — creating the durable bonds between ink and fabric that give the 350 Series its extreme-stretch wash durability.

🤸

Maintains PU Elasticity

Unlike acrylic crosslinkers, Fixer V crosslinks the PU binder without compromising the rubber-like elasticity that defines the 350 Series. The cured ink film remains fully elastic.

💪

Crock Fastness

Improves resistance to color transfer when wet or dry fabric rubs against the print — important for athletic and compression garments subject to friction during wear.

When to Use This Additive

Only with Matsui 350 Series polyurethane binder inks: Soft-Tex White 350 (WS0542), Clear 350G, and Clear 350B. Do NOT use with any other Matsui ink. Do NOT substitute Fixer WF-N for Fixer V on these inks.

💊 Dosage

2–3% by weight of total ink

✅ Compatible Inks

⚠️ Matsui 350 Series PU binder inks ONLY. Not compatible with acrylic inks.

⚠️ Limits

2–3% dosage. Do not exceed 3%. Keep total additives under 15%.

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	1–3%	Lowers cure temp to 250°F. For electric dryers or heat-sensitive fabrics.
Fixer V ← This Product	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.

💡 Rule: Do not exceed 15% total additives in any ink batch. Complete additive guide with dosage charts, stacking rules, and FAQ →

Questions about which additive to use?

Call us at (512) 454-0505 Mon–Fri 9am–5pm CT

Technical Specifications

Specification	Detail
Product Name	Matsui Fixer V
SKU	Matsui Fixer V
Type	Wash & Crock Fastness Crosslinker for Polyurethane Water-Based Screen Printing Inks
Dosage	2–3% by weight of total ink
Problem Solved	Poor wash and crock fastness in polyurethane (PU) binder water-based inks — specifically the Matsui 350 Series (Soft-Tex White 350, Clear 350G, Clear 350B).
Compatible Inks	⚠️ Matsui 350 Series PU binder inks ONLY. Not compatible with acrylic inks.
Limits	2–3% dosage. Do not exceed 3%. Keep total additives under 15%.
Available Sizes	Quart, Gallon, 5 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

Matsui Additives 8 Technical Data Sheet

FREQUENTLY ASKED QUESTIONS

Why can’t I use Fixer WF-N with Soft-Tex White 350?

Fixer WF-N is formulated to crosslink acrylic binder chemistry. The Matsui 350 Series uses polyurethane (PU) binder chemistry — a fundamentally different polymer system. Fixer WF-N will not effectively crosslink PU binders, resulting in poor wash fastness. Fixer V is specifically formulated for PU chemistry.

Can I use Fixer V on my standard Matsui inks (Alpha, Infinity, white inks)?

No. Fixer V is formulated for PU binder inks. Using it on standard acrylic inks will not provide proper crosslinking for those inks. Use Fixer WF-N for all standard Matsui acrylic inks.

What Matsui inks use PU binder?

The Matsui 350 Series: Soft-Tex White 350 (WS0542), Clear 350G, and Clear 350B. All other Matsui inks (Alpha, Infinity, Neo, all white inks, all bases) use acrylic binder and require Fixer WF-N.

Questions about which additive to use?

Call us at (512) 454-0505 Mon–Fri 9am–5pm CT

Reviews

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Matsui Fixer V | Wash & Crock Fastness Crosslinker for Polyurethane Water-Based Screen Printing Inks

Description

Matsui Fixer V

What It Does

When to Use This Additive

The Complete Matsui Additive Lineup — All 13

Technical Specifications

Technical Sheets / Safety Data Sheets / Documents

FREQUENTLY ASKED QUESTIONS

Reviews

Reviews

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Matsui Fixer V | Wash & Crock Fastness Crosslinker for Polyurethane Water-Based Screen Printing Inks

Description

Matsui Fixer V

What It Does

When to Use This Additive

The Complete Matsui Additive Lineup — All 13

Technical Specifications

Technical Sheets / Safety Data Sheets / Documents

FREQUENTLY ASKED QUESTIONS

Reviews

Reviews

You May Also Like

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