Shopify Work Glove HPPE Cut Resistance Fiber Schema — Dyneema vs Spectra vs HyperD Are All HPPE but Different Tenacity and Denier, Bare HPPE Knit (A4) vs Steel-Wire Composite (A6+), Coating Reduces Tested Cut Level 1–2 ANSI Levels, Liner Rating ≠ Finished Glove Rating

Failure Mode 1: HPPE Brand Differences — Dyneema vs Spectra vs HyperD Are Not Interchangeable

HPPE Fiber Brands and Typical Cut Resistance Characteristics

Encode glove.liner_fiber using the specific fiber brand and grade when known (e.g., "Dyneema-SK75", "Spectra-1000", "HyperD-300"). When only the generic "HPPE" designation is provided by the manufacturer without the specific fiber grade, encode glove.liner_fiber = "HPPE-generic" and rely on glove.ansi_cut_level (finished-glove test result) for cut-level routing — do not infer cut level from fiber brand alone.

Failure Mode 2: Bare HPPE Knit vs Steel-Wire Composite — Same "HPPE Glove" Label, Dramatically Different Cut Levels

HPPE Liner Composite Construction vs Cut Level — 13-Gauge Reference

Encode glove.liner_composite as the composite description: "HPPE-only", "HPPE-Kevlar", "HPPE-glass", "HPPE-steel-wire-light", or "HPPE-steel-wire-heavy". The composite field enables routing rules that distinguish bare-HPPE applications (high dexterity, A2–A5) from steel-wire-composite applications (high cut resistance, A6–A9) within the "HPPE glove" category — a distinction invisible if only the liner fiber brand is encoded.

Failure Mode 3: Glove Coating Reduces Tested Cut Level vs Bare Liner — By 1–2 ANSI Levels

Common Coating Types and Typical Cut Level Reduction vs Bare Liner

Manufacturers are required by ANSI/ISEA 105 to test the finished glove — coating included — and report the finished glove cut level. When a product description states a liner cut level (e.g., "A5-rated liner") alongside a coating (e.g., "foam nitrile palm"), the documented finished-glove cut level should be sought explicitly. If not provided, assume the finished glove is 1 ANSI level below the stated liner level for foam nitrile, and 1–2 levels below for heavy dip coatings. Encode glove.ansi_cut_level_source as "finished-glove" when the rating comes from a certified finished-glove test, or "liner-only" when only the uncoated liner rating is documented. Route application matching to glove.ansi_cut_level (finished-glove) only — never to liner-only ratings.

Failure Mode 4: Glove Gauge Affects Dexterity and Cut Resistance Independently — Higher Gauge ≠ Higher Cut Level

Knit Gauge vs Dexterity vs Cut Level — HPPE Dyneema SK75 Reference

Gauge number alone does not determine cut level — it determines the knit tightness, which interacts with fiber type, yarn weight, composite content, and coating to produce the final tested cut level. Encode glove.liner_gauge as the numeric gauge (e.g., "13", "15"). For application routing, use glove.ansi_cut_level as the primary filter and glove.liner_gauge as a secondary filter for dexterity requirements — not as a cut-level proxy.

Recommended Metafield Namespace: glove.* (HPPE Cut Resistance Fields)

{
  "glove.ansi_cut_level":       "A4",               // A1–A9 (ANSI/ISEA 105 finished glove TDM-100 test)
  "glove.ansi_cut_level_source":"finished-glove",    // "finished-glove" | "liner-only" | "unknown"
  "glove.liner_fiber":          "Dyneema-SK75",      // Specific fiber brand/grade or "HPPE-generic"
  "glove.liner_gauge":          "15",                // 7 | 10 | 13 | 15 | 18
  "glove.liner_composite":      "HPPE-only",         // "HPPE-only" | "HPPE-Kevlar" | "HPPE-glass" | "HPPE-steel-wire-light" | "HPPE-steel-wire-heavy"
  "glove.coating_material":     "foam-nitrile",      // "foam-nitrile" | "PU" | "sandy-nitrile" | "latex" | "full-nitrile" | "none"
  "glove.coating_location":     "palm-and-fingers",  // "palm-only" | "palm-and-fingers" | "full-dip" | "none"
  "glove.en388_cut_tdm100":     "E",                 // A–F (EN 388:2016 TDM-100 position 5)
  "glove.en388_standard_year":  "2016",              // "2003" | "2016" | "unknown"
  "glove.needle_puncture_rated":"false"              // "true" (EN ISO 23388) | "false"
}

Routing guide: Precision electronics or fine parts assembly → require glove.liner_gauge in ["15","18"]. Sheet metal or glass at A6+ risk → require glove.liner_composite in ["HPPE-glass","HPPE-steel-wire-light","HPPE-steel-wire-heavy"] AND glove.ansi_cut_level in ["A6","A7","A8","A9"]. HPPE-steel-wire for meat processing → require glove.liner_composite = "HPPE-steel-wire-heavy" AND glove.ansi_cut_level in ["A7","A8","A9"]. Always filter on glove.ansi_cut_level from finished-glove testing — never route based on liner fiber brand alone. Always confirm glove.ansi_cut_level_source = "finished-glove" when the application has a specific ANSI cut level requirement.