Plastisol Screen Printing for Custom OEM Apparel

Standard And Soft-Hand Plastisol

Standard plastisol produces opaque, sharp color with a smooth-to-medium hand after a full cure, typically around 160°C. It suits logos, line art, and multicolor graphics on T-shirts, sweatshirts, and fleece. A thinner deposit improves hand feel but can reduce opacity; use a test wash to confirm adhesion and crack resistance.

High-Density And Puff Prints

High-density plastisol builds a crisp raised edge, while puff expands into a softer dimensional surface during curing. Both work best with bold lettering, simplified symbols, and controlled negative space. High-density needs accurate off-contact and layered deposits; puff needs tightly controlled heat because overcuring can flatten the effect. Use them for heavyweight hoodies, streetwear, and limited capsules.

Discharge Underbase Combinations

A discharge underbase removes dye in suitable 100% cotton garments before plastisol color is printed, reducing the heavy feel of a conventional white base. Vintage graphics and soft-hand dark tees are its strongest use cases. Results vary with reactive-dyed fabric, and discharge requires ventilation plus correct activation and curing. Approve a production-fabric sample because dye discharge is never perfectly uniform.

Metallic, Glow, And Specialty Effects

Metallic plastisol gives reflective sparkle, glow ink charges under light, and foil, flock, or silicone additives create distinct tactile finishes. Keep artwork broad and uncomplicated: fine detail can lose clarity or effect. Special effects require effect-specific mesh, deposit, and cure tests; metallic and foil may show earlier abrasion than standard ink. Reserve them for event tees, nightlife graphics, kidswear accents, and statement outerwear.

Fiber Content And Opacity

100% cotton jersey at 180–240 GSM is the most predictable base: standard plastisol adheres well and often needs no underbase on light colors. 50/50 cotton-poly blends usually need a white underbase for bright artwork; test it because polyester content can introduce dye migration.

Heat And Dye Migration

100% polyester and sublimated polyester carry the highest migration risk because disperse dyes can rise through white ink during curing. Use low-bleed plastisol, a blocker underbase, and cure testing at the lowest verified temperature. 24-hour post-cure checks should include color shift inspection before approving production.

Texture, Stretch And Wash

280–400 GSM fleece and French terry require enough deposit to bridge the surface texture without creating a boardy print. Rib knits and stretch fabrics need stretch plastisol with controlled ink coverage so the print recovers with the garment. Denim benefits from flexible inks and test prints across seams, washes and abrasion-prone areas. Run wash tests after approved cure; inspect cracking, adhesion, migration and color loss.

Specify Color And Separation

1–6 spot colors are the most direct route for clean logos and bold graphics; each color normally requires its own screen. Provide Pantone references, a vector file, print dimensions, underbase instructions, and the intended garment color. 4–8 colors can support simulated-process artwork with halftones, but the proof must show trapping, highlight detail, and ink order. Tiny type, gradients, and distressed effects need a physical strike-off on the actual fabric.

Plan Placement With Construction

12–14 inch front prints may cross the chest area, while oversized back graphics can approach side seams or hem ribs. Confirm placement from high-point shoulder, center front, and seam allowances before cutting is finalized. 2–3 cm clearance from seams, zippers, pockets, and thick rib joins reduces distortion and missed contact. Sleeve prints, seam-adjacent artwork, and all-over panels should be sampled on the finished garment, not only on test fabric.

Coordinate Specialty Branding

3D puff, high-density, silicone, foil, flock, and discharge-style effects change screen mesh, cure settings, and artwork detail. Specify whether the print must stretch, feel raised, resist abrasion, or match embroidery, patches, woven labels, and hang tags. 100-unit capsule orders benefit from one approved decoration pack: final art, color callouts, screen count, placement map, garment spec, label artwork, and wash-test standard. JUNSHEEN can review this package alongside pattern, fabric, and sample decisions before bulk approval.

Prepress And Screen Setup

Each spot color needs a clean separation, correct trapping, and a stencil with sharp edges; weak separations create halos and dirty overprints. Mesh count and stencil thickness must suit the detail, ink, and desired deposit. 230–305 mesh commonly suits fine detail, while lower mesh can deliver a heavier opaque deposit. Require Pantone references, approved artwork size, and registration tolerances on the sample record.

Press And Cure Controls

Every color station requires stable registration, controlled squeegee pressure, and enough flash time to prevent wet-on-wet pickup. Excessive flash can impair intercoat adhesion; insufficient flash can smear the next color. Plastisol must reach its supplier-specified fusion temperature throughout the ink film, often around 160°C. Confirm conveyor time, garment temperature, and ink deposit rather than approving only dryer settings.

Stretch And Wash Testing

A 10–20% hand-stretch check should show no unacceptable cracking, edge lift, or color separation after recovery. Test the actual fabric, since stretch jersey, fleece, and rib behave differently. One sample should complete the agreed wash procedure before approval. Reject tackiness after cure, poor opacity on dark goods, visible color variation, or dye migration from polyester dyes.

Approval Acceptance Criteria

The approval sheet should identify garment color, fabric composition, artwork revision, ink system, placement, print dimensions, Pantone targets, and approved sample date. It should also state the inspection lighting and acceptable variation. Set pass/fail limits for registration, opacity, cure, stretch recovery, wash adhesion, and migration. JUNSHEEN can retain the approved artwork, material, and sample records to support repeat-order consistency.

• No visible cracking after agreed stretch test
• No tacky surface after full cure
• No objectionable migration after wash test

Match Garments And Print Workflow

Jersey T-shirts, fleece hoodies, French terry sweats, denim, and outerwear require different curing, platen, and adhesion controls. Ask which categories the supplier prints routinely and whether plastisol screen printing is in-house or managed through a named specialist. One production sample should show the actual fabric, ink system, underbase, mesh count, and curing conditions. Ask: Who owns color approval, screens, and responsibility if an outsourced print run fails?

Verify Color And Sampling Controls

Pantone references, approved strike-offs, and a retained signed sample create a usable color-management chain. Ask for tolerance procedures, artwork separation review, white-underbase testing, and wash-test records before bulk approval. Two sample stages—development and pre-production—reduce surprises between prototype and shipment. Ask whether the factory retains screens, recipes, graded patterns, and material records for repeat orders.

Audit Scale, Compliance, And Communication

Junsheen supports programs from 100 units per style and color to monthly capacity above 80,000 units, with incoming, in-line, measurement, decoration, and final-packed-goods inspection. Buyers should request the relevant compliance documents rather than assume OEKO-TEX, GOTS, WRAP, or BSCI coverage. Three operational checks reveal reliability: response speed, written change control, and export documentation experience. Ask for a production timeline, defect-handling process, final inspection standard, shipping terms, and a single accountable contact.

• Request recent wash-test and inspection examples.
• Confirm MOQ by style, color, and print placement.
• Approve a sealed pre-production sample before bulk.

Match Fabric And Ink

180–280 GSM cotton jersey, fleece, and French terry generally accept standard plastisol well; dye-migrating polyester requires a low-bleed system. Specify fabric composition, color, and finish before approving inks. 1 approved strike-off on the final fabric prevents cracking, migration, or a heavy hand feel. Confirm stretch requirements for rib, spandex blends, and performance knits.

Prepare Production-Ready Artwork

300 DPI raster art at final print size and vector spot-color files give the separator usable information. Hairlines, soft shadows, and accidental transparencies can plug screens or disappear on press. 4–6 spot colors are usually more controllable than an untested simulated-process file. Ask for a separation proof showing halftone frequency, minimum line weight, and intended print size.

Approve Colors And Underbases

1 white underbase changes the appearance of every color printed above it on dark garments. A digital Pantone reference cannot confirm opacity, flash behavior, or the final garment color. 1 physical strike-off should show the approved underbase, print order, and Pantone targets. Mark acceptable variation before bulk production, especially across garment-dyed lots.

Test Cure And Wash Durability

320°F is a common plastisol cure target, but actual dwell time and ink-film temperature determine fusion. Under-cured prints crack or wash off; excessive heat can scorch fabric or cause dye migration. 3–5 wash-and-dry cycles on the approved sample reveal adhesion, color bleed, and hand-feel changes. Require a cure test on the actual fabric, not only a shop standard.

Budget Screens And Sampling

1 screen is required for each spot color and often another for an underbase, so a six-color design can mean seven screens. Small runs absorb this setup cost more heavily than repeat orders. 100-unit buyers should consolidate colorways, avoid unnecessary screens, and approve a washed production sample. Do not expect photographic detail unless the separator validates simulated-process or CMYK capability first.

Build The Development Brief

One brief should specify customer, garment category, size range, colorways, target FOB, fabric hand feel, and intended retail price. 100 units per style and color is a practical starting point for a capsule, but splitting quantity across too many colors raises material and setup risk.

• Include front, back, sleeve, and neck artwork placements
• State XS–3XL grading or oversized-fit requirements
• Set a non-negotiable delivery date and sales channel

Confirm Materials And Artwork

180–220 GSM ring-spun jersey suits many printed tees, while 280–350 GSM French terry supports heavier hoodies and sweatshirts. Pantone references, vector artwork, print dimensions, underbase instructions, and color count must be preflighted before quotation; revised art after screen preparation creates avoidable delay.

• Confirm fabric composition and shrinkage tolerance
• Separate spot colors from simulated-process artwork
• Approve artwork scale on each garment size

Approve Samples In Sequence

A prototype verifies construction and fit before a print sample verifies plastisol screen printing color, opacity, registration, and hand feel. 24–72 hour wash testing on the approved sample should check cracking, adhesion, color migration, and dimensional change before the bulk production approval is released.

• Approve fit sample measurements and grading
• Approve physical color proof under consistent lighting
• Record every approved revision in the tech pack

Protect The Production Timeline

2–4 weeks is a common sampling window once fabric and artwork inputs are complete; bulk timing begins only after final approvals and material availability align. 1 production approval should lock bill of materials, size set, print specification, labels, packaging, carton marks, inspection standard, and shipping method before cutting starts.

• Reserve fabric only after color and quantity confirmation
• Use pre-production approval as the final change gate
• Allow time for final inspection and export booking