Textile and Fabric Finishing and Fabric Coating Mills (U.S., NAICS 3133)

Rollup primer — one level up. In the North American Industry Classification System (NAICS), the four-digit industry group 3133 bundles the two "value-add" steps that sit between raw cloth and a usable material: finishing (dyeing, bleaching, printing, and treating fabric) and coating (laying a polymer film onto cloth). It has two children — 31331 Textile and Fabric Finishing Mills and 31332 Fabric Coating Mills — and each of those, in turn, has a single six-digit member (313310 and 313320). This page's job is the contrast: how the two halves differ in size, growth, ownership, and how you'd invest. For the deep dive on either half, see the child primers.

1. Overview

Group 3133 is the conversion middle of the U.S. textile chain. Upstream mills spin yarn (NAICS 313110), weave it (313210), or knit it (313240) into plain "greige" (loom-state, undyed) cloth. Group 3133 is where that plain cloth becomes a finished, sellable material — either by finishing it (dye, bleach, print, mercerize, preshrink, or apply water-, stain-, wrinkle-, and flame-resistant treatments)[5] or by coating it (bonding a layer of vinyl, polyurethane, rubber, silicone, or acrylic to one or both faces to make it waterproof, airtight, abrasion-resistant, or wipe-clean).[6] Downstream, the finished or coated fabric is cut and sewn (NAICS 314, 315) into apparel, home goods, tarps, seating, awnings, airbags, and protective gear.

For an investor, the group as a whole reads as a small, mature, capital- and chemical-intensive processing industry: roughly $6.8 billion of annual receipts, about 21,000 workers, and a structure dominated by private, family-held mills rather than listed companies.[1][2] It is one of the most water- and emissions-regulated corners of U.S. manufacturing, and it has been reshaped for decades by imports — and, on the evidence the children now carry, it is still contracting rather than holding flat.[7][8][9] The two halves share that DNA but differ enough in economics and growth that they are worth comparing head-to-head before you treat "3133" as one thing.

2. What's inside — the two children and how they differ

The group splits cleanly into a wet-chemistry half (finishing) and a polymer-coating half (coating). Finishing is the larger, more labor-intensive, more import-pressured half; coating is the smaller, more capital- and materials-intensive, slightly faster-growing half with more value per worker. Both are overwhelmingly private, but they offer different (thin) public on-ramps.

The one-line contrast: finishing is more plants, more people, lower pay, thinner value density, and secular decline in its commodity core; coating is fewer, larger, higher-paid, higher-value-per-line plants with a modest growth tailwind. Neither is meaningfully investable in public markets — both are private-market industries — but coating offers marginally more listed exposure through large diversified multinationals for whom it is one segment among many.

A note on the two "single-child" layers. Each five-digit child (31331, 31332) contains exactly one six-digit national industry (313310, 313320), so the five- and six-digit numbers are identical. The real aggregation happens here at the four-digit group, where the two distinct industries are summed for the first time.

3. How big it is (this level's rollup)

Federal figures for the whole group, from our ground-truth statistics:

These reconcile with the children as expected on the County Business Patterns basis: establishments (570 + 147 = 717), employment (14,366 + 6,992 = 21,358), and payroll (~$707M + ~$470M = ~$1.18B) sum exactly, and receipts sum to ~$6.78B.[1][2][3] Two bookkeeping notes now that the children carry more detail. First, the coating child reports two establishment counts — 147 on the 2023 CBP basis and 153 on the 2022 Economic Census basis — so use 147 when reconciling against the group's 717.[1][3] Second, the 635 group firm count is fractionally below the 501 + 138 = 639 child sum, a normal Economic Census reporting artifact rather than a contradiction.[2][3] For scale, group revenue is roughly $318,000 per worker and about $10.7 million per firm, and with 717 establishments across 635 firms, most operators run a single plant.[1][2]

Everything here is a small business, federally speaking. Both six-digit industries carry the same U.S. Small Business Administration size standard — 1,000 employees.[4] Against 21,358 employees spread over 635 firms (about 34 per firm on average), essentially every operator in group 3133 clears that bar, which matters for federal set-aside contracting and SBA lending eligibility across the whole group.[1][2][4]

The trend the snapshot hides. The census tables above are a still frame; the children now supply the motion, and it points down on both sides. Finishing receipts fell from about $4.9 billion in 2017 to ~$3.90 billion in 2022 — roughly a fifth in nominal terms, before adjusting for inflation.[7] And the Bureau of Labor Statistics publishes its detailed-industry productivity series at exactly this four-digit level: for group 3133 it shows employment falling from an estimated 26,400 in 2024 to 21,800 in 2025, with group output down 4.0% and hours worked down 17.3%.[8][9] That BLS series is scoped and estimated differently from County Business Patterns and does not line up level-for-level with the 21,358 CBP count for 2023 — read it as direction, not as a revision to the table — but the direction is unambiguous, and the hours figure falling faster than output is the signature of capacity rationalization rather than a demand blip.

Undercount caveat. These are real payroll manufacturers, so the plant count is reasonably complete — this is not a gig or sole-proprietor field where a census misses the small end. The distortion is one of scope: 3133 measures only merchant / commission finishers and coaters. Finishing or coating done captively inside a vertically integrated mill is booked under that mill's primary product — a weaver that also dyes counts under broadwoven fabric mills (313210), a knitter under 313240, and integrated weave-and-coat plants likewise sit under weaving, not here; plastic and rubber synthetic leather sits under NAICS 326.[5][6] Add the large share of U.S. consumption that is simply imported, and the true national footprint of finishing + coating activity is larger than the $6.8 billion line. The coating half now has a useful cross-check on this point: an independent trade estimate put 2022 U.S. coated-fabric production at about $2.6 billion, close to the $2.884 billion Census receipts figure — so Census is not obviously missing merchant capacity, and the gap to the much larger private market-research numbers (finishing near $6–7B on its own, the global coated-fabrics market near $28–30B) is definitional, not a counting error.[3][5][10][11] Because ownership is overwhelmingly private, any single operator's size is usually invisible in public filings.

4. Investable universe — where value concentrates across the children

There is no U.S.-listed pure-play for the group and no dedicated exchange-traded fund (ETF). Public exposure is thin, indirect, and different on each side:

• Finishing (31331): the closest listed operator is small-cap home-textiles maker Culp, Inc. (CULP), whose integrated weave-dye-finish economics track the industry.[16] Unifi, Inc. (NYSE: UFI) offers a recycled-fiber angle upstream,[17] and Kornit Digital (NASDAQ: KRNT) is a "picks-and-shovels" supplier of the digital textile-printing hardware finishers are adopting.[14] The bulk of the industry is private: performance-fabric majors Milliken & Company (22 vertically integrated plants in the U.S. Southeast, with its textile portfolio now PFAS-free) and Glen Raven (Sunbrella), Mount Vernon Mills (weaving, dyeing, and surface finishing for workwear and denim), the private-equity-backed Elevate Textiles platform (Burlington, Cone Denim), and a long tail of ~450 small commission dyehouses.[18][19][20]
• Coating (31332): essentially one micro-cap pure-play, Uniroyal Global Engineered Products (OTCQB: UNIR), owner of the Naugahyde brand (~$70M revenue, thinly traded) — and note that its most recent SEC annual filing covers fiscal 2021, so any current position requires separate securities diligence.[21][22] Broader exposure comes through diversified multinationals for whom coated fabric is one segment — Saint-Gobain (SGO), Trelleborg (TREL-B), SergeFerrari (ALFER), Surteco (SUR), SRF, Sioen, Freudenberg — and through airbag-fabric names, mostly Japanese-listed (Asahi Kasei, Toyobo, Toray, Seiren) plus U.S.-based Highland Industries.[12][23] One of those proxies is closing: Continental (CON) agreed on July 4, 2026 to sell ContiTech to Lone Star Funds for €4.0 billion plus up to €250 million in performance payments, with closing expected by end-2026 — so Continental is a temporary route in, not a durable one.[24] The value again sits in private mills: Seaman, Cooley Group, Herculite, Haartz, Morbern, Shawmut, Glen Raven, Milliken, and U.S. plants of Europe's Sioen and Freudenberg.[23][27][28]
• Shared indirect exposure: dye, resin, and finishing-chemical suppliers — DuPont (NYSE: DD), Dow (NYSE: DOW), and Chemours (NYSE: CC, the PFAS story) — give a chemicals-side read on both halves.

The straddlers are worth noting. A small number of large private groups appear on both children's rosters — Milliken and Glen Raven most clearly — which is the only real sign of an operator treating finishing and coating as one business.[18][19][23] They are the exception; the listed on-ramps on the two sides share nothing at all.

Where value concentrates: disproportionately in the specialty tier of the smaller coating half and the technical/defense niches of finishing — the certified, qualification-gated grades (architectural membrane, airbag, medical, defense, marine) that carry pricing power — rather than in the commodity apparel dyeing and upholstery vinyl that face the hardest import competition.

5. How the money works

Both halves are spread-and-utilization businesses: buy inputs, run an expensive line, sell the converted material at a markup. The levers are shared, but weighted differently.

• The spread. Finishers buy dyes, chemicals, energy, and (heavily) water; coaters buy a base fabric plus a polymer system (PVC resin and plasticizers, polyurethane, rubber, silicone). Coating margin tracks petrochemicals closely — when resin and energy outrun pricing power, it compresses.[6]
• Utilization. Both live or die on capacity utilization — keeping capital-intensive dyeing, printing, or coating lines running full. Finishing adds a yield lever: off-shade lots become "seconds."[5]
• Model. Each half splits into commission/toll processors (charge a fee to process fabric the customer owns; inventory-light, thin-margin) and converters/merchants (buy greige cloth, process it, resell; fatter margin but exposed to fabric-price and fashion-inventory risk).[5][6]
• Mix is the differentiator. In both, commodity grades (apparel dyeing, upholstery vinyl) earn thin, import-exposed margins, while specialty grades that require customer qualification and certification (technical, defense, medical, architectural, airbag) command materially higher margins. Coating's higher revenue-per-worker (~$400k vs ~$270k) reflects a heavier capital/materials base per line.[1][2][3]
• Price realization — measurable on one side only. The only published price series at this level covers coating: the BLS producer price index for NAICS 313320 rose from 218.3 in December 2020 to 297.4 in April 2026, about 36%, so coaters largely passed the post-2020 input shock through rather than absorbing it.[36] There is no equivalent public read for finishing.

A candid limit. Neither half has a usable public margin benchmark. The group's only listed pure-play, Uniroyal, reported a 12.4% gross margin and a negative 2.1% operating margin in 2021 — one micro-cap's year, not an industry norm — and the finishing side has no pure-play at all.[22] Underwriting in group 3133 is a plant-by-plant exercise, not a screen.

6. What drives demand

Demand is derived and cyclical on both sides, pulled by overlapping end markets:

• Apparel and fashion — the most import-exposed, commodity-heavy demand, and the eroding end for finishing. The displacement is easiest to see in fiber terms: USDA estimated U.S. cotton textile and apparel imports at roughly 8.5 billion raw-fiber-equivalent pounds in 2025 against domestic cotton-mill use of only about 0.8 billion pounds — most of the cloth Americans buy is finished somewhere else.[15]
• Home textiles and furnishings — mattresses, upholstery, bedding, towels (finishing); vinyl seating and hospitality/healthcare surfaces (coating) — tied to housing and consumer cycles.
• Automotive and transportation — the largest single pull for coating (seating, airbags, convertible tops, trim), roughly a third of the global coated-fabrics market; coated fabrics account for about 73% of the airbag-fabric market, where silicone coating dominates.[11][12]
• Technical / industrial / defense — filtration, medical, protective, tarps, tents, architectural membrane, geomembrane — the growth end for both. The U.S. technical-textiles market is projected to grow ~3.9%/yr to 2030,[13] and the global coated-fabrics category ~5%/yr.[11]

Two structural shifts cut across the group: a move to sustainable materials (PFAS-free, PVC-free, bio-based) reshaping specifications, and, on the finishing side, made-to-order digital textile printing that can cut water use by up to ~95% and favors quick-turn domestic runs.[11][14] In autos, EV interiors and lightweighting are changing coating specifications rather than just cycling volume.[11] The Berry Amendment (a U.S. Department of Defense domestic-sourcing rule for textiles) anchors a protected slice of demand for compliant domestic mills.[38]

7. Regulation

Both halves are water-, air-, and chemical-intensive, so environmental and product-safety rules are central and largely shared:

• Water (finishing-weighted): dye effluent falls under the U.S. Environmental Protection Agency's (EPA) Textile Mills Effluent Guidelines (40 CFR Part 410) and Clean Water Act discharge permits, which reach coating mills as well.[29]
• Air (coating-weighted): solvent and polymer emissions fall under Clean Air Act rules, including a fabric-coating NESHAP (National Emission Standards for Hazardous Air Pollutants) category covering compounds such as toluene, MEK, methanol, xylenes, and formaldehyde; new polymeric-coating facilities may additionally face VOC-control requirements under the applicable New Source Performance Standards.[34][35]
• PFAS (per- and polyfluoroalkyl substances, "forever chemicals") used in durable water/stain repellents are a live, group-wide issue: EPA is moving toward textile-wastewater limits,[30] and California and New York banned PFAS in most apparel and textiles from January 1, 2025 — California via AB 1817, codified at Health and Safety Code §108971 — with thresholds tightening in 2027 and more states and the EU phasing in.[31][32][33] One nuance the finishing child adds and the parent previously missed: EPA has noted that sites may keep discharging PFAS after they stop using the chemistry, so "PFAS-free product" does not mean "PFAS-free site."[29]
• Chemical and plasticizer scrutiny: PVC and phthalate plasticizers face EU REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) and California Proposition 65 pressure; worker-safety rules cover solvents and isocyanates.[6]
• Worker safety — low enforcement volume: across the whole 3133 group, OSHA's federal inspections from October 2024 through September 2025 produced just 21 citations across 10 inspections, with machine guarding and hazardous-energy control (lockout/tagout) the recurring themes.[37] Occupational enforcement is a real but modest cost line here; the binding constraints are environmental.
• Product-performance standards: flammability rules — notably the 16 CFR Part 1633 mattress open-flame standard (finishing) and auto/aircraft/furniture/medical specs (coating) — drive flame-retardant treatment and specialty grades.[39]
• Trade policy: tariffs directly reshape competition on both sides (2025 U.S. tariffs on Chinese textiles reached ~145%, cutting both ways).[40]

8. Consolidation

The group is fragmented and unconcentrated, and — notably — more so than either child on its own. Group concentration: the largest four firms hold 18.4% of receipts, the top eight 27.6%, the top twenty 46.7%, and the top fifty 68.5%; the Herfindahl-Hirschman Index (HHI, a standard concentration gauge where under 1,500 is "unconcentrated") is just 177.7.[2]

Those group figures sit below both children's (finishing HHI 386, four-firm ~30%; coating HHI 288.6, four-firm 24.7%) for a structural reason worth understanding: a firm that is large within finishing is small within the combined group, and vice versa, so pooling two distinct industries dilutes measured concentration. A handful of large private groups — Milliken and Glen Raven — do appear on both sides, but neither child's leaderboard is dominated by any one firm, so the pooling still dilutes rather than compounds.[2][3][18][19][23]

The tail is entirely on the finishing side. The children's newly detailed ratios make this concrete: coating's top fifty firms hold 88.7% of a 138-firm industry — which is to say the top fifty essentially are the industry — while finishing's top fifty hold about 79% of 501 firms, and the group's top fifty only 68.5%.[2][3] Any roll-up thesis in 3133 is a finishing thesis by arithmetic: that is where the several hundred sub-scale operators actually sit.

The long-run story on both sides is decades of consolidation and plant closure as weaving and apparel offshored and processing followed the fabric: survivors specialized or were rolled up. On the finishing side, Elevate Textiles assembled Burlington and Cone Denim under private-equity ownership.[2] On the coating side, Synthomer bought Omnova in 2020[26] and then sold the coated-fabrics business to Surteco — effective February 2023, correcting the 2021 date this page previously carried[25]; the Sioen family took Sioen Industries private in 2021[27]; and Continental agreed in July 2026 to sell ContiTech to Lone Star Funds.[24] Meaningful barriers — capital-intensive lines, hard-to-copy formulation, long customer qualification — protect incumbents on the coating side while capping growth.

9. Risks

The group's risks are the union of its children's, and they rhyme:

• Import competition and trade-policy whiplash — the secular threat on both sides; 2025 U.S. textile output still fell ~4% despite new tariffs, as imports shifted country rather than reshoring.[40]
• Ongoing capacity rationalization — BLS shows group output down 4.0% and hours worked down 17.3% into 2025, with employment estimated to fall from 26,400 to 21,800; shrinkage is the base case, not a downside scenario.[8][9]
• Cyclical end-demand in housing, furniture, apparel, and (especially for coating) auto builds and construction.
• Input and energy cost volatility — dyes, chemicals, resin, plasticizer, and energy, with coating margins tracking petrochemicals.[6]
• Regulatory / ESG obsolescence and liability — PFAS and PVC restrictions can strand product lines and force reformulation, and PFAS site liability can outlive the decision to stop using the chemistry.[29][30][31]
• Substitution — molded plastics, spacer fabrics, and next-gen synthetics on the coating side.
• Customer concentration — few large apparel, auto, or defense programs.
• Aging, capital-intensive equipment and, for the lone listed pure-play, small-cap financing and disclosure risk — Uniroyal's most recent SEC annual filing covers fiscal 2021.[22]

10. How to invest and the outlook

For public-market investors, exposure is limited, indirect, and idiosyncratic on both sides — Culp (CULP), Unifi (UFI), and equipment maker Kornit (KRNT) as the finishing-adjacent reads; micro-cap Uniroyal (UNIR), diversified proxies (Saint-Gobain, Trelleborg, SergeFerrari, Surteco, SRF), and airbag-fabric names for coating; and diversified chemicals (DD, DOW, CC) for the PFAS/reformulation angle across both.[12][14][16][17][21][23] Two caveats have hardened since the last pass: Continental's coated-fabrics exposure is being sold to Lone Star with closing expected by end-2026,[24] and Uniroyal's disclosure is stale.[22] There is no group pure-play and no ETF; these are single-name, cyclical bets, not a clean sector allocation.

For private-market investors, this is where the group actually lives: direct ownership of commission dyehouses, integrated finishers, and coating mills — many family-owned and succession-driven — and private-equity roll-ups of specialty platforms. A ~$6.8 billion group with an HHI under 200, a 1,000-employee SBA small-business ceiling that essentially everyone clears, and mostly single-plant firms is structurally suited to platform-and-bolt-on consolidation — with the fragmented tail concentrated on the finishing side.[2][3][4] Underwrite on plant utilization, customer diversification, PFAS/PVC-compliance status (including legacy site discharge, not just product formulation), specialty mix (technical, defense/Berry-compliant, medical, architectural, airbag), and equipment age.[2][3][29][30]

Outlook: a mature, contracting group with two diverging tiers. Commodity apparel finishing and commodity upholstery vinyl will likely keep shrinking under import and margin pressure — finishing receipts already fell about a fifth between 2017 and 2022, and group hours are falling faster than output.[7][8][9] Durable value migrates to specialization and to compliance-driven, low-water, PFAS-free/PVC-free reformulation — plus quick-turn domestic digital printing on the finishing side and EV-interior, architectural, and defense grades on the coating side.[11][14] Between the two, coating carries the clearly better profile: a low-single-digit demand tailwind, demonstrated pricing power (producer prices +~36% since December 2020), and higher value per worker, against finishing's secular commodity decline.[11][36] Both, however, reward the same operator profile: disciplined, specialized, compliant, and vertically or geographically defensible. Broad passive exposure is neither available nor advisable. For the full treatment of either half, see the 31331 and 31332 primers.

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Sources

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15. USDA Economic Research Service. "Cotton and Wool Outlook — March 2026" (U.S. cotton textile and apparel imports ~8.5B raw-fiber-equivalent lb in 2025 vs ~0.8B lb domestic mill use). 2026. https://ers.usda.gov/sites/default/files/_laserfiche/outlooks/113948/CWS-26c.pdf
16. Culp, Inc. "Fourth Quarter and Full Year Fiscal 2025 Results." Business Wire, 2025. https://www.businesswire.com/news/home/20250625123994/en/Culp-Announces-Fourth-Quarter-and-Full-Year-Fiscal-2025-Results
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23. 360Quadrants. "Top 15 Coated Fabrics Companies, Worldwide 2024" (Saint-Gobain, Trelleborg, Freudenberg, Continental, Serge Ferrari, Sioen). 2024. https://www.360quadrants.com/chemicals/coated-fabrics
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39. U.S. Consumer Product Safety Commission / eCFR. "16 CFR Part 1633 — Standard for the Flammability (Open Flame) of Mattress Sets." https://www.ecfr.gov/current/title-16/chapter-II/subchapter-D/part-1633
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