PP WOVEN FABRIC- Wenzhou Mou'an Packaging Co.,Ltd

PP Woven Fabric

PP woven fabric, also known as polypropylene woven fabric, is a versatile technical textile made from polypropylene fibers. It is composed of interwoven polypropylene threads, offering exceptional strength, durability, and versatility. PP woven fabric is highly resistant to tearing, abrasion, and chemicals, making it suitable for challenging environments. Additionally, it is lightweight, breathable, and moisture-resistant, making it an ideal choice for applications in packaging, agriculture, construction, geotextiles, and transportation industries. The manufacturing process of PP woven fabric involves strict quality control measures to ensure consistent and high-quality products. Moreover, PP woven fabric is recyclable and reusable, contributing to environmental sustainability. With its diverse range of applications, PP woven fabric plays a crucial role in various industries and continues to evolve and innovate in the future.

PP Woven Fabric Applications

PP woven fabric finds widespread application in various industries due to its strength, durability, and versatility. It is extensively used in packaging, agriculture, construction, geotextiles, transportation, furniture upholstery, industrial goods, and flood control. In packaging, it provides robust sacks and bags for storing and transporting diverse materials. In agriculture, it serves as crop covers and ground covers for protection and moisture control. In construction, it reinforces structures and prevents erosion. Geotextiles utilize it for soil stabilization and drainage systems. Transportation benefits from its use in bulk bags. Furniture and upholstery industry utilize its durability. Industrial goods and flood control benefit from its strength and water resistance.

PP WOVEN FABRIC ROLLS

PP WOVEN FABRIC ROLL

PP woven fabric rolls are imported by customers from industries of packaging, agricultural, industry, foods, transporting and so

PP woven fabric has a wide range of applications across various industries due to its exceptional strength, durability, and versatility. Here are some key applications of PP woven fabric:

Packaging: PP woven fabric is extensively used in packaging applications such as sacks, bags, and bulk containers. It is favored for its high tensile strength, tear resistance, and ability to withstand heavy loads. PP woven bags are commonly used for packaging agricultural products, chemicals, cement, and other materials.

Agriculture: PP woven fabric finds extensive use in the agricultural sector. It is used for manufacturing crop covers, shade nets, ground covers, and weed control mats. The fabric provides protection against pests, UV radiation, and adverse weather conditions while allowing air circulation and maintaining proper moisture levels.

Construction: PP woven fabric is utilized in the construction industry for applications such as scaffolding nets, safety fencing, and geotextiles. It provides reinforcement, erosion control, and separation functions, making it essential for road construction, soil stabilization, and drainage systems.

Geotextiles: PP woven fabric is an integral component of geotextile products used in civil engineering and environmental applications. It is used for erosion control, soil stabilization, reinforcement of embankments, and drainage systems. The fabric’s high tensile strength and permeability make it suitable for various geotechnical projects.

Transportation: PP woven fabric is utilized in the transportation industry for products such as flexible intermediate bulk containers (FIBCs), also known as bulk bags. These bags are widely used for shipping and storing bulk materials such as grains, chemicals, and minerals. PP woven fabric ensures the safe and efficient transportation of goods.

Furniture and Upholstery: PP woven fabric is employed in furniture manufacturing for upholstery applications. Its durability, resistance to fading, and easy maintenance make it suitable for use in chairs, sofas, and outdoor furniture.

Industrial and Consumer Goods: PP woven fabric serves as a key component in the production of industrial products such as tarpaulins, flexible tanks, and industrial curtains. It is also used in consumer goods such as shopping bags, beach mats, and promotional banners.

Flood Control: PP woven fabric is used in flood control applications to construct temporary dams, barriers, and sandbags. Its strength and water resistance make it an essential material for managing flood-related emergencies.

These applications highlight the versatility and wide-ranging benefits of PP woven fabric, making it a valuable material in numerous industries.

PP Woven Fabric Production Process

The production process of PP woven fabric involves several steps, including extrusion, weaving, and finishing. Here’s a brief overview of the process:

  1. Extrusion:

    • Polypropylene resin pellets are fed into an extruder hopper.
    • The pellets are heated and melted inside the extruder barrel.
    • The molten polypropylene is forced through a circular die, forming continuous filaments.
    • The filaments are stretched and solidified using a water bath or air cooling system.
    • The solidified filaments are then passed through a series of rollers to flatten and align them, creating a tape-like structure.
      PP woven fabric extrusion
      PP woven fabric extrusion
  2. Warping and Sizing:

    • The tape-like filaments are wound onto large beams called warper beams.
    • During the warping process, multiple tape beams are arranged side by side to create a wider tape sheet.
    • Sizing involves applying a protective coating or lubricant to the filaments to improve their weaving characteristics and reduce friction.
  3. Weaving:

    • The sized tape beams are loaded onto high-speed shuttleless circular looms.
    • The looms interlace the tape beams in both the warp and weft directions, forming a woven fabric structure.
    • The weaving process determines the fabric’s construction, such as the number of warp and weft threads per inch, denoted as the fabric’s “construction specification.”
  4. Lamination (Optional):

    • In some cases, the woven fabric may undergo a lamination process.
    • A thin layer of polypropylene film is bonded to one or both sides of the fabric using heat and pressure.
    • Lamination enhances the fabric’s barrier properties, making it more resistant to moisture, chemicals, and UV radiation.
  5. Printing (Optional):

    • If required, the woven fabric can be printed with designs, logos, or labels.
    • The fabric is passed through a printing machine equipped with flexographic or gravure printing rollers.
    • Ink is transferred onto the fabric’s surface, creating the desired prints or patterns.
  6. Cutting and Sewing:

    • The woven fabric is cut into the desired dimensions, either in rolls, sheets, or specific shapes.
    • Cutting can be done manually or using automated cutting machines.
    • The edges of the fabric may be reinforced by sewing or heat sealing to prevent fraying.
  7. Finishing:

    • Various finishing treatments can be applied to the woven fabric to enhance its properties.
    • These treatments may include coating the fabric with additives like UV stabilizers, flame retardants, or anti-static agents to improve its performance and durability.
    • The finished fabric is inspected for quality control, ensuring it meets the desired specifications and standards.

After completing these steps, the PP woven fabric is ready for packaging, transportation, or further processing into various end-products, such as bags, sacks, tarpaulins, geotextiles, or ground covers.

Main index of PP woven fabric manufacturing process

  1. Weaving density.

Weaving density refers to the number of warp and weft tapes in a 100 mm × 100 mm area. Different applications of woven polypropylene bags require different weaving density. A case in point, bags for powders-like content packing like flour bags will require more tighter and densely weaving to avoid leakage of packed contents. The density of commonly used woven fabric is 36 × 36 pieces / 10cm, 40 × 40 pieces/10 cm, 48 × 48 / 10 cm. (Some countries are using mesh density per square inch, like 7×7, 10×10, 14×14 etc.)

  1. Tensile strength of PP woven fabric.

Tensile strength is also called tensile capacity, tensile force, resitance force. For pp woven fabric, it bears tensile strength in warp and weft directions, so it is called warp tensile strength or weft tensile strength also. It’s the most important index of woven fabric which decides how heavy or capacity could a polybag carries. Unit of Tensile strength N/5cm or Kgf/cm. Formula to convert N/5cm to kgf/cm :  N/5cm = kgf * 9.8 * 5 

  1. Unit Weight per square meter of pp woven fabric.

The weight per unit area of woven fabric is expressed by gram weight per square meter(gsm or g/m2), which is an important technical index of woven fabric. Gram weight per square meter mainly depends on the density of warp and weft and the thickness of flat yarn. Gram weight per square meter affects the tensile strength and load capacity of woven fabric. PP woven bags manufacturers control their costs of material by adjusting the g/m2 of the pp woven fabric what they are using. In some countries, Denier is also used to express the thickness of woven polypropylene fabric, as to how to convert Denier to gsm please visit our article How to Convert Denier of PP Woven Fabric to GSM.

  1. Width.

The width of woven fabric directly affects the bag making process. For tubular fabric, the width is expressed by half of the circumference. Width also involves the shrinkage rate. For the fabric which is used for packaging bags making, The width of the bag will be slightly smaller than that of the cloth width which just been woven, which we call it width retraction.

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How to produce PP woven fabric

Producing PP woven fabric involves extruding polypropylene (PP) granules into tapes, which are woven on circular looms. The selection of high-quality PP granules ensures strength and durability. Extrusion creates long strands of PP tape, woven together on looms to form the fabric. Optional lamination with materials like kraft paper or BOPP film enhances properties. Advanced printing techniques can be employed for customization. Precise cutting and stitching result in uniformity. Continuous quality control checks ensure fabric meets standards for strength, durability, and dimensional accuracy. The final PP woven fabric is ready for various applications in packaging, agriculture, construction, and more.

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