3732
Industrial E-glass fabric for coating substrates, insulation jackets and welding protection products.
JLON supplies 3732 fiberglass cloth for industrial coating and thermal protection applications. Common constructions include 420–430 g/m² fabrics with satin or twill weaves. Yarn sizing and surface treatment are selected according to the coating process and end-use requirements.
Textiles made of fiberglass yarns are widely used in fields of industrial insulation, heat insulation, corrosion resistance, fire protection, coating and composite deep-processing.
We have the most advanced production equipment and technology from twisting, warping, weaving, quality control to inspection. We can provide high quality industrial textiles with different sizes. Furthermore, we offer customization to meet customers' needs on the thickness, width and linear density by designing the optimal structure.
The following table provides a reference for common 3732 constructions. Confirm the exact supplied grade against its technical data sheet before ordering.
Property | Typical Specification / Options |
Glass type | E-glass |
Nominal fabric weight | 420 or 430 g/m², depending on grade |
Typical thickness | Approximately 0.40–0.43 mm, depending on construction |
Weave | Satin, including 4-harness satin, or twill |
Yarn sizing | Starch-based or silane-based, depending on grade |
Post-treatment | Heat-cleaned versions may be specified |
Warp and weft yarns | Grade-specific; confirm yarn designation and linear density |
Thread count | Grade-specific; specify warp × weft and measurement units |
Width and roll length | Confirm when requesting a quotation |
These values describe common series options rather than the tolerances or guaranteed properties of a single grade. Sizing and heat cleaning are separate specification items.
Starch-sized 3732 fabric is used as a starting material for certain industrial coating processes. Whether it requires desizing or another preparation step depends on the coating formulation and production method.
Specify whether you need untreated fabric or fabric prepared for subsequent coating.
Silane-sized constructions may be selected where compatibility with a particular resin or coating system is required. The suitability depends on the specific sizing chemistry, so the designation “silane-sized” alone is not sufficient to confirm compatibility.
Provide the resin or coating details when requesting a material recommendation.
Heat cleaning is a post-treatment used to remove organic sizing from woven glass fabric. Heat-cleaned 3732 cloth may be specified for subsequent coating or finishing processes.
Confirm the required surface condition and residual organic content for your process.
3732 glass fabric is commonly used as a substrate for coated industrial textiles, including silicone-coated fiberglass fabric. The weave, surface treatment and fabric construction should be matched to the coating process and required finished properties.
Typical downstream products include flexible ducts, fabric connectors and protective covers.
3732 fiberglass cloth can be incorporated into fabricated insulation jackets and equipment covers. Applications include insulation assemblies for valves, pipes and industrial equipment.
The fabric grade, coating, insulation filling and seam design should be selected together for the intended service conditions.
3732 fabric is used as a base material for certain welding blankets and protective curtains. Selection depends on the expected sparks, spatter, exposure duration and installation conditions.
The performance of a finished protective product must be evaluated for its intended application; the 3732 style designation alone does not establish a protection rating.
Appropriately coated 3732 fiberglass cloth can be fabricated into flexible connections and duct components. Specify the coating system, flexibility requirements and operating environment when selecting the base fabric.
For an accurate material match, provide JLON with the following information:
End use: Coating substrate, insulation jacket, welding blanket or flexible connection.
Fabric construction: Required weight, thickness, weave and thread count.
Surface condition: Starch-sized, silane-sized or heat-cleaned.
Processing details: Coating or resin type and any pretreatment requirements.
Supply requirements: Fabric width, roll length and order quantity.
Acceptance criteria: Tensile strength, test method, appearance and edge-quality requirements.
If you are replacing an existing material, share its TDS or a reference sample. A match should be based on the complete specification rather than the 3732 designation alone.
Both weights occur in commercial 3732 product ranges. The nominal weight and tolerance depend on the specific construction. Always refer to the TDS for the grade being supplied.
Both satin and twill versions are available in the market. A common industrial construction is 420 gsm satin fabric, while other 3732 grades use twill. Include the required weave in your inquiry.
Yes, 3732 is commonly used as a base fabric for silicone-coated industrial textiles. The sizing, surface preparation and coating process must be compatible. A coating trial is recommended when qualifying a new grade.
The main difference is the chemistry applied to the glass yarns. Starch-sized fabric may require removal of the sizing before further processing, while silane-sized fabric is selected according to the intended resin or coating system. The two versions may also differ in yarn and fabric construction.
No. Heat cleaning is a treatment used to remove organic sizing. Silane sizing is a surface chemistry applied to the fibers. Specify both the required sizing and any subsequent treatment when ordering.
The working temperature depends on the supplied fabric, sizing, coating and finished assembly. A temperature value for bare glass fiber should not be treated as the continuous service rating of a coated fabric or insulation jacket. Request data for the exact product and operating conditions.
3732 describes a fabric style, not a finished-product certification. Fire blanket performance depends on the complete construction and applicable testing. Confirm the requirements for the finished product before selecting its base fabric.
Send JLON your target specification, application and required quantity. Include your preferred weight, weave, finish, width and roll length, or share an existing TDS for comparison.
Contact JLON to discuss your 3732 fiberglass cloth requirements.
