Capabilities

Capabilities
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EXPERIENCE AND KNOWLEDGE YOU CAN TRUST

gear

Expertise

Since 1936 STERN EWS has produced specialty industrial fabrics.  

safe

Quality

ISO 9001 certified production to deliver consistent product every day. 

partnership

Support

As a primary source provider for many of our clients, STERN EWS supports them by meeting expectations with consistency. 

  • Engineering Expertise

    Stern EWS's staff offers technical expertise in yarn preparation, weaving, finishing, and material testing.  They represent a combined tenure of nearly 100 years working with customers on the design and manufacture of thousands of patterns.

    Occasionally, yarns that have been available for years become discontinued. Our staff is very experienced in anticipating such problems and ensuring that replacement yarns, weaving layouts, and finishing techniques are established in anticipation of orders from our customers.

  • Equipment

    Weaving Equipment

    For the majority of our work, we employ rigid rapier looms with positive transfer, up to 4m in width.

    Airjet looms are available for weaving the lightest weight fabrics.

     

    Finishing Processes & Equipment

    We use reiterative processing techniques to coax the most out of a fabric's potential.

    We employ a full assembly of equipment to customize the finishing process, including

    • Scouring jigs for surface cleaning and chemical add-ons such as soil and water resistant finishes
    • Heat Setting equipment for shrinking and stabilizing thermoplastic fibers such as nylon, polyester, Nomex meta-aramid, and Teflon PTFE
    • Clip Tenter frames, linear ovens that heat stabilize the fabric with width control.
    • High Tonnage Calendering for imparting final properties to a fabric, such as gauge, permeability, visual appearance, or surface texture.

    Finished widths are typically available from 30” to 74”.

  • Lab Testing

     

    METRIC

    PROCEDURE

    DESCRIPTION

     

    Yarn:

    Denier (yarn number)

    ASTM D1059

    Test Method for Yarn Number Based on Short Length Specimens

    Yarn Twist

    ASTM D1423

    Test Method for Twist in Yarns by Direct Count Method

     

    Fabric:

    Abrasion Resistance

    ASTM D4157

    Test Method for Abrasion Resistance of Textile Fabrics (oscillatory cylinder method)

    Air Permeability

    ASTM D737

    Test Method for Air Permeability of Textile Fabrics

    Arc Thermal Performance (ATPv)

    ASTM D1959

    Standard Test Method for Determining the Arc Thermal Performance Value of Materials for Clothing

    Burst Strength

    ASTM D3786

    Test Method for Hydraulic Bursting Strength - diaphragm method

    Elongation                   

    ASTM D5034

    Test Method for Breaking Force and Elongation of Textile Fabrics (grab method)

     

    ASTM D5035

    Test Method for Breaking Force and Elongation of Textile Fabrics (raveled strip method)

    Extractible content

    ASTM D2257

    Test Method for Extractible Matter in Textiles

    Flammability

    FTMS 191 5903

    Flame Resistance of Cloth Vertical

     

    FMVSS 302

    Flame Resistance of Textile Materials Horizontal

     

    ASTM D6413

    Flame Resistance of Textiles - Vertical

     

    FAR 25.853A

    Flame Resistance of Cloth  -  60 second, Vertical

     

    FAR 25.853B

    Flame Resistance of Cloth  -  12 second, Vertical

     

    FAR 25.853B2

    Flame Resistance of Cloth  -  15 second, Horizontal

    Gauge

    ASTM D1777

    Test Method for Measuring Thickness of Textile Materials

    pH

    AATCC81-1983

    pH of the Water Extract from Textiles

    Stiffness

    ASTM D4032

    Test Method for Stiffness of Fabric by Circular Bend Procedure

    Surface Resistivity

    AATCC76-1982

    Electrical Resistivity of Fabrics

    Tear Strength

    ASTM D2262

    Test Method for Tearing Strength of Woven Fabrics by the Tongue Single Rip Method (“tongue tear”)

     

    ASTM D5587

    Test Method for Trapezoid Tearing Strength of Textiles (“trap tear”)

    Tensile Strength

    ASTM D5034

    Test Method for Breaking Force and Elongation of Textile Fabrics (grab tensile method)

     

    ASTM D5035

    Test Method for Breaking Force and Elongation of Textile Fabrics (raveled strip method)

    Thread Count

    ASTM D3775

    Test Method for Fabric Count of Woven Fabric

    Weight

    ASTM D3776

    Test Method for Mass per Unit Area (Weight) of Woven Fabric

    Width

    ASTM D3774

    Test Method for Width of Woven Fabric

     

    Elastomeric:

    Abrasion Resistance

    ASTM D3389-94 Method B

    Standard Test Method for Coated Fabric Abrasion Resistance (Rotary Platform, Double Head Abrader) (“Taber Abrasion”)

  • Engineering Expertise

    Stern EWS's staff offers technical expertise in yarn preparation, weaving, finishing, and material testing.  They represent a combined tenure of nearly 100 years working with customers on the design and manufacture of thousands of patterns.

    Occasionally, yarns that have been available for years become discontinued. Our staff is very experienced in anticipating such problems and ensuring that replacement yarns, weaving layouts, and finishing techniques are established in anticipation of orders from our customers.

  • Equipment

    Weaving Equipment

    For the majority of our work, we employ rigid rapier looms with positive transfer, up to 4m in width.

    Airjet looms are available for weaving the lightest weight fabrics.

     

    Finishing Processes & Equipment

    We use reiterative processing techniques to coax the most out of a fabric's potential.

    We employ a full assembly of equipment to customize the finishing process, including

    • Scouring jigs for surface cleaning and chemical add-ons such as soil and water resistant finishes
    • Heat Setting equipment for shrinking and stabilizing thermoplastic fibers such as nylon, polyester, Nomex meta-aramid, and Teflon PTFE
    • Clip Tenter frames, linear ovens that heat stabilize the fabric with width control.
    • High Tonnage Calendering for imparting final properties to a fabric, such as gauge, permeability, visual appearance, or surface texture.

    Finished widths are typically available from 30” to 74”.

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