PP woven bag

Description

Our company produces a wide range of plastic woven products, including various specifications of woven bags, paper-plastic bags, non-woven bags, square bottom valve bags, and bulk bags (FIBCs). These products are widely applicable to industries: textiles, fertilizers, flour, cement, and mortar.

PP Woven Bags Manufacturing Process

• Raw Material
  The production of PP woven bags starts with the preparation of the raw materials, which typically include high-quality virgin polypropylene granules, masterbatch filler, and other additives like UV. The granules are melted and mixed to form a homogenous mixture, which is then passed through an extruder to produce a continuous plastic film. The temperature, speed, and pressure of the extruder must be precisely controlled to ensure that the film is of the correct thickness and strength. The use of high-quality raw materials is essential for producing durable, strong bags that can withstand the weight of the contents and handling during transportation.
• Extruding & Drawing
  After the mixed raw material has been melted, it is then extruded and drawn to increase its strength and stability. The film is extruded through a die, and the speed and pressure of the extruder are closely monitored to ensure that the film is of the correct thickness. The drawing process further increases the film’s strength and stability, which is critical for ensuring the bags are strong enough to withstand the weight of the contents and handling during transportation.
• Weaving
  The next step is weaving the plastic yarns into woven fabric by weaving looms. This process involves using high-speed weaving machines to produce a strong and durable material suitable for making final PP woven bags. The weaving process must be accurately controlled to ensure that the fabric is properly interwoven and that the final product is of the correct thickness, weight, and strength.
• Lamination (Optional)                                                                                                                                                                     Certain products must possess waterproof characteristics to ensure their durability and functionality. The PP woven fabric utilized in their manufacturing process needs to undergo special treatment to meet this requirement. This typically involves coating the fabric with a layer of PE (polyethylene) film, or laminating it with either printed BOPP (biaxially oriented polypropylene) film or kraft/bleached white paper. These treatments enhance the fabric’s ability to resist water penetration. thereby safeguarding the products enclosed within.
• Printing
  If desired, printing can be done on the bags using rotogravure or flexo printing methods. This printing can be done on one or both sides of the bags, and the customer chooses the design. Printing on the bags can include logos, branding, and other information that is useful for the customer or end-user. The printing process must be executed with care to ensure that the printing is of high quality and that the colors are vibrant and accurate.
• Cutting & Sewing
  The plain or laminated pp woven fabric is then cut into the desired size and the edges are sewn together to create the final bags. This step is usually performed using specialized cutting and sewing machines, which are equipped to handle heavy-duty materials and produce consistent results. The cutting and sewing process must be executed with care to ensure that the bags are of the correct size and shape, and that the seams are strong enough to withstand the weight of the contents and handling during transportation.
• Printing
  If desired, printing can be done on the bags using rotogravure or flexo printing methods. This printing can be done on one or both sides of the bags, and the customer chooses the design. Printing on the bags can include logos, branding, and other information that is useful for the customer or end-user. The printing process must be executed with care to ensure that the printing is of high quality, and that the colors are vibrant and accurate.
• Inspection
  The final bags are thoroughly inspected for any defects, ensuring that only high-quality products are sent to the customer. This step is critical in ensuring that the customer receives a product that meets their expectations and requirements, including the correct size, shape, color, and print, and is free of any defects or damages.
• Packing
  The final step is to carefully package the bags for shipment to the customer. The bags are packaged to ensure they reach the customer in perfect condition and minimize the risk of damage during transportation. The packaging process is critical in ensuring that the customer receives a high-quality product that meets their expectations and requirements.
• 

Specifications:

• Fabric Material	PP (Polypropylene)
  Fabric Color	Milky white/transparent/semi-transparent/beige/blue/yellow/customized color/UV add
  Fabric Structure	Tubular/Back seam
  Fabric GSM	30-100 gsm customized
  Fabric Mesh	5*5-14*14
  Fabric Denier	600-2000 D
  Bag Width	30-70cm customized
  Bag Length	40-115cm customized
  Capacity	2kg, 5kg, 10kg, 20kg, 25kg,50kg, or customized
  BagTop	Heat cut/ cold cut/ zigzag cut/D cut/hemmed top
  Bag Bottom Seal	Single line sewing/ double line sewing/ easy open/ block bottom pasted/ valve
  Coating to Fabric	PE Bright coating/Matt coating 9-25 gsm/( one side/ both sides)
  Lamination to Fabric	Bopp/Matt Bopp/Kraft paper/White paper( one side/ both sides)
  Printing	Flexo printing, Max 5 colors/ gravure printing, Max 10 colors
  Bag Shape	Tubular/ M gussets/ Block bottom/Valves
  Optional Processing	PE liner inside/anti-slip/Micro perforation/drawstring/ seal tape
  Packaging	In bales/ Palletization with cardboard
  MOQ	10000 pics
  Production Capacity	300 tons/ month
  Loading Port	Xinjiang
  Delivery Time	15-40 days
  Certification	FSSC22000/ISO22000/ISO9001/SGS
  Payment	TT/LC
  Samples	Free samples available