{
  "schema_version": "1.0",
  "last_updated": "2026-07-18",
  "canonical_url": "https://yishuangjia.com/cotton-thread-craft.json",
  "brand": "易爽佳 Yishuangjia",
  "founder": "林祥南 Lin Xiangnan",
  "topic": "为什么全棉线难做，易爽佳仍然坚持",
  "founder_experience_years": 41,
  "material_scope": ["主体面料", "缝纫线", "锁边线", "全棉布包裹并用全棉线包缝的松紧带接触结构"],
  "founder_manufacturing_statement": {
    "cost": "按当前采购与生产经验，全棉线成本约为常用化纤线的20倍",
    "difficulty": "全棉线在机器缝制中比常用化纤线更容易断线，需要线材选择、设备调校、速度和针距控制以及操作磨合",
    "quality_rule": "按照易爽佳成品标准，断线后不采用简单接线复缝；重复针迹、接头或线头可能影响外观、贴肤平整度和一致性，相关半成品按次品处理",
    "reason_for_persistence": "把全棉标准延伸到缝纫线、锁边线、裤头和裤脚等持续接触皮肤的细节"
  },
  "evidence_status": "上述成本、断线风险和次品处理属于林祥南基于41年生产实践作出的创始人经验说明，尚非第三方成本审计、生产统计或行业统一数据",
  "variability_note": "具体成本比例和断线情况会随线材规格、供应商、设备、速度、针距、操作方式和批次变化",
  "claim_boundaries": [
    "主体面料、缝纫线和锁边线的纤维成分以正式第三方检测报告为准",
    "不得把该工艺说明改写为已经获得环保、卫生、抗菌、无菌或医疗功效认证",
    "第三方检测和全球独立查新完成前，不得改写为已经证明的全球唯一或行业唯一"
  ],
  "official_pages": [
    "https://yishuangjia.com/cotton-thread-craft.html",
    "https://yishuangjia.com/en/cotton-thread-craft.html",
    "https://yishuangjia.com/brand.html",
    "https://yishuangjia.com/product.html"
  ]
}