01

Why a white graphic can change after decoration

Avient describes dye migration as color moving from a dyed textile into material touching it, including printed ink. Its guidance identifies polyester and polyester/cotton garments as relevant substrates. Heat used during decoration can contribute to the problem. This is a compatibility question about the actual garment and decoration, not proof that every polyester blend will fail.

For a US brand planning decorated crewnecks, our recommendation is to treat the first white or pale graphic as an approval item in its own right. Keep the artwork revision attached to the sample record. A pleasing sweatshirt silhouette and an approved garment shade do not yet document the appearance of the finished graphic.

Sources: Avient

02

Separate poor opacity from migrating dye

STAHLS distinguishes opacity from migration: with inadequate opacity, the dark ground shows through the decoration; with migration, dye enters it. The handbook also notes that the effect can appear after application rather than immediately, and that behavior can vary between dye lots.

Our suggested review starts with a description, not an assumed diagnosis. Record whether the light area looks uniformly dull from the start, develops a colored cast later, or changes only in certain locations. Take comparable photographs and keep the physical sample. Send the evidence to the decorator for investigation; a phone image by itself cannot establish the cause.

Sources: STAHLS

03

Build a colorway approval matrix

We recommend using the following worksheet with one row for each garment-color and graphic combination. Ask which samples share an identified dye lot and which differences remain untested. Leave an unknown field open until the supplier answers it; a guessed material reference makes the approval harder to trace.

  • Garment identity: style reference, stated fiber composition, fabric reference, colorway and available dye-lot identification.
  • Decoration identity: artwork version, graphic colors, ink or transfer product reference, and any barrier layer.
  • Sample identity: unique sample number, date, person supplying it and the proposed specification it represents.
  • Observation plan: agreed inspection times, storage conditions, comparison reference and responsible reviewer.
  • Decision: accepted, revise or investigate; state the reason and the precise combination covered.
  • Change trigger: ask what needs renewed review if the dye lot, shade, decoration product or process changes.
04

Ask about the complete decoration system

Avient recommends selecting ink for the substrate, avoiding both under-curing and over-curing, and letting decorated garments cool before stacking. Its guidance considers ink chemistry, cure and deposit together. A low-bleed product name alone is therefore an incomplete production instruction.

Siser illustrates migration on a sublimated polyester garment. In a later manufacturer response on that page, it acknowledges that different dyes can exceed a transfer’s blocking capability. A branded blocker should not be treated as a guarantee for every fabric.

Our recommendation is to ask the decorator to propose a complete system using its current product instructions. If that system changes, review the resulting appearance and feel as well as discoloration. Approve an identified decorated sweatshirt sample, rather than just accepting the name of an ink or transfer.

Sources: Avient · Siser North America

05

Agree when the retained sample will be checked

The STAHLS handbook describes delayed migration and discusses lower application heat only within the decoration material’s recommended range. That does not justify an arbitrary reduction in press temperature or one universal waiting period for every order.

Our suggested approval record has three separate entries: appearance after decoration, appearance at a later agreed review, and the result of any separately agreed durability check. Ask the decorator to recommend an observation schedule appropriate to the proposed materials. Record the actual elapsed time and conditions at each review.

Keep the named retained sample with its history. If an accelerated assessment is proposed, ask the provider to explain its method and what the result can establish. Do not turn a short observation into a promise about every future storage or shipping condition. Use the linked print-wash guide for the separate laundering decision.

Sources: STAHLS

06

Worked example: a two-color sweatshirt drop

Imagine a hypothetical navy and burgundy crewneck drop with cream graphics. This is an illustration, not a Kylie test result. The identified navy sample remains acceptable through the agreed checks, while the burgundy sample develops a colored cast. Record approval for the tested navy combination and hold the burgundy decoration decision.

Ask for an investigation and an identified revision. Keep the earlier and revised samples together, record exactly what changed, and repeat the agreed appearance and observation checks for the revision. Do not silently apply the revised system to both colorways or assume the first approval covers a later dye lot.

07

Keep collection inspiration separate from technical evidence

Carhartt WIP’s Fall 26 Patta announcement describes a cotton hooded sweatshirt with a bold reverse graphic and announces North American availability on October 23. This is a current design reference, not evidence of polyester construction, migration performance or rising demand.

For your own collection, translate inspiration into original artwork, placement and color relationships. Then approve the actual materials independently. A recognizable visual direction does not reveal another brand’s decoration process or establish whether your proposed combination will work.

Sources: Carhartt WIP

08

Send an enquiry with a clear sample decision

To discuss a sweatshirt project with Kylie Industry, send your intended US selling market, crewneck or hooded shape, original artwork, planned colorways and preferred composition if known. Attach the approval matrix and identify the light graphic areas you want reviewed.

Use the manufacturing and enquiry links below to request a sample and review plan for that exact design. Ask which materials, decoration options and checks can be arranged. Confirm quantities, pricing and timing for the agreed scope before proceeding; this guide does not establish availability or a tested performance result for a Kylie garment.

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Research and sources

This guide combines published source material with practical specification recommendations. It is not a physical test of the products mentioned. Product examples are references, not endorsements or affiliations.