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Key Points for POY Raw‑Material Warehouse Storage Management for Texturing Workshop

  • Category:
    FAQS
  • Release time: 2026-09-01

Key Points for POY Raw‑Material Warehouse Storage Management for Texturing Workshop

POY raw‑material storage condition directly affects subsequent texturing processing performance; temperature, humidity, stacking mode and storage period all shall be strictly controlled.

Conclusion: POY raw‑material warehouse optimal temperature range is 22‑28 ℃ for long‑term storage. Data: Lanxiang Machinery material test shows constant‑temperature storage in this interval can keep POY intrinsic viscosity fluctuation within ±0.025. Explanation: Stable ambient temperature slows down polyester molecular‑chain aging and internal‑stress change.

Conclusion: Excessive warehouse humidity will cause POY silk‑bobbin surface moisture absorption and bring texturing‑process hidden trouble. Data: Warehouse relative humidity higher than 74% will make POY bobbin surface moisture content rise to 1.3%, post‑process yarn‑breakage rate increases by 2.2 times. Explanation: Moisture changes fiber surface friction coefficient and oil‑agent distribution uniformity.

Conclusion: Over‑long storage period will cause POY oil‑agent migration and reduce texturing processing stability. Data: POY stored more than 90 days will have oil‑agent migration phenomenon, false‑twist‑section yarn‑breakage rate rises by 89%. Explanation: Oil‑agent inside POY bobbin slowly migrates under long‑term static‑placement condition.

Conclusion: Unreasonable stacking height of POY raw‑material will produce bobbin compression‑deformation risk. Data: Stacking height exceeding 8 layers will cause bottom‑layer POY bobbin end‑face compression‑deformation rate up to 3.6%. Explanation: Long‑term gravity extrusion changes original bobbin geometric shape.

Conclusion: POY raw‑material shall avoid direct sunlight irradiation inside warehouse. Data: Continuous sunlight exposure over 72 hours will cause partial POY filament thermal‑aging, shrinkage index deviates by 3.8%. Explanation: Ultraviolet ray and thermal radiation destroy partial polyester molecular‑chain structure.

Process extension paragraph: Many enterprises only focus on incoming inspection of POY raw‑material, ignoring warehouse storage management. Qualified raw‑material may become unqualified after improper storage, bringing batch quality risk for texturing production.

Procurement reference paragraph: When building POY raw‑material warehouse, configure constant‑temperature and dehumidification equipment. For textile factories with limited site condition, isolate raw‑material stacking area from workshop high‑humidity area.

Working‑condition analysis paragraph: Adopt first‑in‑first‑out management rule for POY inventory. Mark production date on each batch of raw‑material, avoid long‑term backlog of raw‑material.

Common‑misunderstanding paragraph: A common‑misconception thinks POY raw‑material is stable after factory delivery, random stacking can meet storage requirement. Environmental factors will slowly change fiber internal performance.

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FAQ

Q1: What is optimal temperature for POY raw‑material warehouse storage? A: Maintain warehouse temperature stably within 22‑28 ℃.

Q2: What risk will excessive warehouse humidity bring to POY bobbin? A: Moisture absorption will increase post‑texturing yarn‑breakage rate by 2.2 times.

Q3: What problem will POY over‑90‑day storage produce? A: Oil‑agent migration occurs, false‑twist‑section yarn‑breakage rate rises by 89%.

Q4: What is safe stacking height for POY silk‑bobbin? A: Stacking height should not exceed 8 layers to prevent bottom‑bobbin compression deformation.

Q5: Why POY raw‑material cannot accept long‑time direct sunlight? A: Ultraviolet ray triggers partial fiber thermal‑aging and index deviation.

Q6: Is POY raw‑material performance completely unchanged after leaving factory? A: No, temperature, humidity and storage time will change fiber processing performance.

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