Matsui Soft-Tex Base 350 | Polyurethane Rubber-Binder Water-Based Clear Mixing Base for Extreme-Stretch Silicone-Like Custom Colors on Performance Fabrics

Matsui

Matsui WS0540 Soft-Tex Base 350

Matsui Soft-Tex Base 350 (WS0540) is a polyurethane (rubber binder) water-based clear mixing base engineered for extreme-stretch performance fabrics that demand maximum elasticity beyond what acrylic bases can deliver. Part of the Matsui 350 Series — a completely different binder chemistry from the acrylic 301 Series and Stretch Series. Produces a silicone-like printing surface with an extremely soft hand feel and rubber-like stretch that rebounds without cracking on the most demanding high-stretch garments. Prints through mesh at 110-160/inch. Dual purpose: mix with Matsui Neo Pigments and Glow Pigments to create extreme-stretch custom colors, OR use as a clear undercoating before Soft-Tex White 350 for enhanced texture and flexibility. ⚠️ IMPORTANT: Uses Fixer V (2-3%) for wash fastness — NOT Fixer WF-N. Different chemistry requires different additives. Compatible with polyester when used with Under Base Blocker 350. Requires zero viscosity modifications. Cures at 320°F (160°C). PVC-free. Environmentally safe.

Price range: $109.99 through $4,499.99

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Description

Matsui Soft-Tex Base 350 (WS0540)

Matsui Soft-Tex Base 350 (WS0540) is a polyurethane rubber-binder water-based clear mixing base made for extreme-stretch performance fabrics that demand more elasticity than acrylic bases can deliver. It is part of Matsui’s 350 Series, which uses a completely different binder chemistry than the acrylic 301 Series. Soft-Tex Base 350 produces a silicone-like printing surface with an extremely soft hand feel and rubber-like stretch that rebounds without cracking on demanding high-stretch garments. It prints through 110-160 mesh and can be used two ways: mix it with Matsui Neo Pigments and Glow Pigments for extreme-stretch custom colors, or use it as a clear undercoat before Soft-Tex White 350 to enhance texture and flexibility. Important: this product uses Fixer V at 2-3% for wash fastness, not Fixer WF-N. It is compatible with polyester when used with Under Base Blocker 350, requires no viscosity modifications, cures at 320°F (160°C), and is PVC-free.

When Acrylic Stretch Is Not Enough

Acrylic Matsui clears like Stretch Clear, EasyPrint Clear, and Soft Stretch Clear work very well on standard performance fabrics, Dri-Fit, and athletic garments. But some garments stretch beyond what acrylic binders can comfortably follow.

Compression leggings, four-way stretch yoga pants, technical base layers, and other extreme-stretch garments can push acrylic binders to their limit. Soft-Tex Base 350 is built for those jobs. Its polyurethane rubber binder gives the print maximum stretch and rebound, helping it move with the garment without cracking or separating.

The result is a silicone-like print surface with a very soft hand and rubber-like elasticity for high-stretch performance printing.

Critical Additive Information

Soft-Tex Base 350 does not use the same wash-fastness additive as Matsui acrylic bases.

Acrylic bases like 301C, 301M, EasyPrint, Stretch, Soft Stretch, Acrylicon, Simple Clear, and Extender Base use Fixer WF-N. Soft-Tex Base 350 uses Fixer V at 2-3% instead. Do not use Fixer WF-N with the 350 Series.

Compatible additives for the 350 Series include Retarder MG, Thickener B, and RV Additive.

How It Works

Soft-Tex Base 350 serves two main roles in the Matsui 350 Series system.

1. Extreme-stretch clear mixing base
Mix with Matsui Neo Pigments and Glow Pigments to create custom colors with a silicone-like surface and maximum elasticity. The same Matsui color system and Color Mixer Software formulas used with acrylic bases also apply here. The difference is the binder platform.

2. Clear undercoat for Soft-Tex White 350
Print Soft-Tex Base 350 as a clear undercoat, flash it, then print Soft-Tex White 350 on top. This helps create a more refined printed surface with added flexibility.

Neo Pigments and Glow Pigments

Soft-Tex Base 350 is the carrier base for Matsui Neo Pigments and Glow Pigments in extreme-stretch applications.

Soft-Tex Base 350 + Neo Pigments
Add Matsui Neo Pigments to create custom Pantone-matched colors with maximum elasticity and a silicone-like surface.

Soft-Tex Base 350 + Glow Pigments
Mix Matsui Glow Pigments into the base for fluorescent neon effects on stretch garments. These are fluorescent pigments, not glow-in-the-dark pigments. They appear ultra-bright in daylight and react strongly under UV or blacklight.

Soft-Tex Base 350 by itself
Use it alone as a clear undercoat before Soft-Tex White 350, or print it by itself for a clear silicone-surface effect.

Browse the full Matsui Neo Pigment and Glow Pigment collection here.

Dark Polyester Print Sequence

For dark polyester garments, use the 350 Series in this order:

  • Print Under Base Blocker 350 and flash.
  • Print Soft-Tex White 350 and flash.
  • Print Soft-Tex Base 350 mixed with Neo Pigment colors.
  • Cure at 320°F (160°C).

For a premium texture workflow, you can also print Soft-Tex Base 350 as a clear undercoat before the white layer.

350 Series Additive Compatibility

Additive Dosage Use
Retarder MG 1-5% Extends open time and helps prevent ink from drying in the screen.
Fixer V 2-3% Improves wash fastness for the polyurethane 350 Series binder.
Thickener B 0.25-1% Increases viscosity for more control.
RV Additive 1-3% Reduces viscosity for smoother flow and better penetration.

Not compatible with the 350 Series: Fixer WF-N, Softener MG, and Quick Additive. Use Fixer V for wash fastness with 350 Series products.

Complete Matsui Water-Based Comparison Chart

Base / Clear Product Code Type Max Mesh Opacity Primary Substrates Stretch / Elasticity Finish Blocker Required on Poly? Binder Best For
High-Mesh Cotton Bases (305 Mesh) — Acrylic Binder
301C Clear WS0462 Clear 305/in Transparent Light-colored cotton, 100% cotton Standard Translucent / clear Yes Acrylic Custom Neo Pigment colors on light cotton, tone-on-tone, Pantone matching
Mat 301M WS0463 Semi-opaque 305/in Semi-opaque Colored cotton, medium and dark cotton Standard Matte Yes Acrylic Matte-finish Neo Pigment colors on colored cotton
High-Mesh Performance Bases (225 Mesh) — Acrylic Binder
EasyPrint Clear 301 WS0527 Clear 225/in Transparent / medium Performance fabrics, Dri-Fit, high-stretch Excellent Soft sheen Yes Acrylic Fine-detail Neo Pigment colors on light performance fabrics
EasyPrint Mat 301 WS0528 Semi-opaque 225/in Semi-opaque Colored performance fabrics, Dri-Fit Excellent Milky / semi-opaque Yes Acrylic Fine-detail Neo Pigment colors on colored performance fabrics
Standard Performance Bases (150-180 Mesh) — Acrylic Binder
Stretch Clear 301 WS0501 Clear 150-180/in Transparent Performance fabrics, Dri-Fit, Lycra Excellent Silicone-like Yes Acrylic Workhorse clear for Neo Pigment colors on stretch garments
Stretch Mat 301 WS0511 Semi-opaque 150-180/in Semi-opaque Colored performance fabrics, Dri-Fit Excellent Milky / semi-opaque Yes Acrylic Semi-opaque Neo Pigment colors on colored performance fabrics
Soft Stretch Clear 301 WS0535 Clear 150-180/in Transparent Performance fabrics, Dri-Fit, Lycra Excellent Silicone-like, barely there Yes Acrylic Softest Neo Pigment colors on performance fabrics
Premium Finish Performance Base (160 Mesh) — Acrylic Binder
Acrylicon Clear WS0530 Clear 86-160/in Transparent Performance fabrics, high-stretch synthetics Excellent Matte, silicone-like, zero tack Yes Acrylic Matte-finish Neo Pigment colors with zero tack
Economical Multi-Substrate Bases — Acrylic Binder
Simple Clear WS0561 Clear 160/in Transparent Cotton, polyester, blends, Dri-Fit, performance Excellent Standard Yes Acrylic Budget multi-substrate clear with broad application range
Extender Base WB0010 Economy clear 305/in Transparent Light-colored cotton, light fabrics Standard Translucent Yes Acrylic Economy high-mesh clear for light garments
Polyurethane Rubber-Binder Bases — 350 Series
Soft-Tex Base 350 WS0540 Clear 110-160/in Transparent Extreme-stretch performance fabrics Maximum Rubber / silicone-like Yes — Under Base Blocker 350 Polyurethane Extreme-stretch clear with Neo Pigments, clear undercoat for Soft-Tex White 350
Soft-Tex White 350 WS0542 White 110-160/in Opaque white Extreme-stretch performance fabrics Maximum Rubber / silicone-like Yes — Under Base Blocker 350 Polyurethane Extreme-stretch white for the 350 Series system

Important: Acrylic Matsui bases use Fixer WF-N for wash fastness. Polyurethane 350 Series products use Fixer V. Do not mix these systems.

Soft-Tex Base 350 vs. Stretch Clear

Specification Soft-Tex Base 350 Stretch Clear 301
Binder Chemistry Polyurethane rubber binder Acrylic binder
Elasticity Maximum rubber-like stretch and rebound Excellent stretch for standard performance fabrics
Mesh Range 110-160/inch 150-180/inch
Finish Rubber / silicone-like surface Silicone-like surface
Wash Fastness Additive Fixer V at 2-3% Fixer WF-N at 1-5%
Best For Compression, four-way stretch, yoga, technical base layers Dri-Fit, athletic wear, standard stretch garments

Key Features

  • Polyurethane rubber binder – Delivers maximum elasticity for extreme-stretch garments.
  • Silicone-like print surface – Produces a smooth surface with a very soft hand.
  • Dual-purpose use – Functions as a clear mixing base and as a clear undercoat for Soft-Tex White 350.
  • Neo Pigment compatible – Works with Matsui Neo Pigments and Glow Pigments using the same color formulas as other Matsui bases.
  • Fixer V required – Uses Fixer V at 2-3% for wash fastness.
  • No viscosity adjustments needed – Prints straight from the container.
  • PVC-free formula – Environmentally safe water-based system.

Technical Specifications

Product Name Matsui Soft-Tex Base 350
Product Code WS0540
Type Polyurethane rubber-binder clear mixing base and clear undercoat
Appearance Translucent / clear
Opacity Transparent
Finish Rubber / silicone-like surface
Recommended Mesh 110-160/inch
Cure Temperature 320°F (160°C)
Elasticity Maximum rubber-like stretch and rebound
Primary Substrates Extreme-stretch performance fabrics, compression garments, yoga wear, technical base layers
Polyester Use Compatible with Under Base Blocker 350 on dark polyester
White Ink Pairing Soft-Tex White 350
Pigment Mixing Matsui Neo Pigments and Glow Pigments
Wash Fastness Additive Fixer V at 2-3%
Compatible Additives Retarder MG, Fixer V, Thickener B, RV Additive
Not Compatible Fixer WF-N, Softener MG, Quick Additive
Viscosity Modifications None required
Formulation PVC-free and environmentally safe
Storage 65°F to 95°F (18°C to 35°C), avoid direct sunlight
Cleanup Water and mild soap or detergent
Available Sizes Quart, Gallon

Technical Sheets / Safety Data Sheets / Documents

Matsui WS0540 Soft-Tex Clear Base 350

FREQUENTLY ASKED QUESTIONS

What makes Soft-Tex Base 350 different from acrylic Matsui bases like Stretch Clear?

Soft-Tex Base 350 uses a polyurethane rubber binder instead of an acrylic binder. That gives it more stretch and rebound for garments that move beyond standard performance fabric limits.

Can I mix Neo Pigments with Soft-Tex Base 350?

Yes. It works with Matsui Neo Pigments and Glow Pigments and uses the same Matsui color formulas.

What wash-fastness additive do I use with Soft-Tex Base 350?

Use Fixer V at 2-3%. Do not use Fixer WF-N.

Can I use Quick Additive with Soft-Tex Base 350?

No. Quick Additive is made for acrylic binder systems and is not the correct choice for the 350 Series.

What is the undercoat workflow for the 350 Series?

Print Soft-Tex Base 350 as a clear undercoat, flash it, then print Soft-Tex White 350 on top.

How do I print on dark polyester with the 350 Series?

Print Under Base Blocker 350, flash, print Soft-Tex White 350, flash, then print Soft-Tex Base 350 mixed with Neo Pigment colors and cure at 320°F.

What garments need the 350 Series instead of acrylic bases?

Compression leggings, four-way stretch yoga pants, technical base layers, and other garments where acrylic systems may crack under extreme stretch.

Can I create fluorescent neon with Soft-Tex Base 350?

Yes. Mix in Matsui Glow Pigments for fluorescent neon effects that react strongly under UV or blacklight.

What mesh count should I use with Soft-Tex Base 350?

The recommended range is 110-160 mesh. A 135-160 mesh works well for standard coverage, while 110-135 mesh gives a heavier deposit.

Do all Matsui bases work with Neo Pigments?

Yes. Matsui bases are designed to work with Neo Pigments and Glow Pigments. The base controls substrate fit, finish, and elasticity.

Which Matsui bases require a blocker on polyester?

All Matsui bases should be tested with the proper blocker when printing polyester. The 350 Series uses Under Base Blocker 350.

Is Soft-Tex Base 350 safe for children’s clothing?

Yes. It is PVC-free and environmentally safe.

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