Rope Coatings and Fiber Finishing

1. Scope
1.1 This guide aims to provide end users with information on the purposes, limitations, chemical categories, and inspection of coatings used for ropes and rope systems.
1.2 This guide does not provide guidance on end-use performance requirements or testing for specific coating types or methods.
1.3 This guide is not intended to address all safety concerns associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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  1. References and related standards applicable to this guide are provided.

  2. Terminology relevant to this guide is provided.

4.1 Classification

  • Water-based coatings/Water-soluble coatings
    · Anionic water-soluble coatings
    · Non-ionic water-soluble coatings
    · Cationic water-soluble coatings

  • Solvent-based coatings

  • Hot-melt coatings

  • Extrusion coatings

  • Powder coatings

4.2 Common Coating Types

  • Polyurethanes
    · Water-based polyurethanes are widely used.

  • Waxes
    · Paraffin wax (saturated structure, C20-C40)
    · Polyolefin waxes (C6000)

  • Latex

  • Acrylics

  • PVC (Polyvinyl Chloride)
    · Fluoropolymers
    · PTFE (Polytetrafluoroethylene)
    · PFA (Perfluoroalkoxy Polymer Resin)
    · FEP (Fluorinated Ethylene-Propylene)
    · ETFE (Polyethylenetetrafluoroethylene)
    · PVF (Polyvinylfluoride)
    · PVDF (Polyvinylidene Fluoride)
    · Sometimes used in solid forms (fibers (ePTFE), film, tape)

  • Silicones

  • Ethyl Vinyl Acetate (EVA)

  • Other

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5. Benefits of Proper Selection and Application of Rope Coatings and Fiber Finishing
5.1 Difference Between Fiber Finishing and Rope Coating

  • Fiber finishing refers to treatments applied to raw yarn during the spinning process, before winding or twisting into yarn.

  • Rope coating refers to independent treatments applied during or after the rope manufacturing process.

5.2 Benefits of Rope Coatings

  1. Enhanced structure and performance

  2. Improved knotting performance

  3. Increased abrasion and fatigue resistance

  4. Functionalization

5.3 Evaluation of Rope Coating Quality
The distribution of coatings in ropes significantly impacts their effectiveness. Key considerations include:

  • Stability of the coating bath

  • Distribution of the coating on the rope surface: longitudinal distribution and cross-sectional distribution

For more information about fiber ropes, feel free to follow the manufacturer——Qingdao Huakai Ocean Technology Co., Ltd.