Production Advantage
Equipped with over 60 sets sewing machines, high-speed printing, lamination machine, auto-cutting machines,check needle machine, ultrasonic bag making machine. Our factory already passed BSCI Audit, and have our own dust free workshop.
Professional Team
As an international B2B packaging supplier, we have experts from R&D to manufacturing and delivery, with an average working experience of more than 5 years. The entire process is fully controlled to provide you with the best product.
After -Sales
With over 15 years in the industry, we are proud to have built a strong and competent team, ready to provide our customers with a comprehensive after-sales service experience that is recognized by our customers.
What is PP Woven Bag?
PP woven bags, also known as polypropylene woven bags, are durable and versatile packaging solutions. Constructed from polypropylene, a thermoplastic polymer, these bags offer exceptional strength, making them ideal for storing and transporting a wide range of products, from grains and seeds to chemicals and fertilizers. The woven design provides tear resistance and prevents moisture intrusion, ensuring the integrity of the contents. These bags are popular in industries such as agriculture, construction, and shipping due to their cost-effectiveness and ability to withstand heavy loads.
Advantages of PP Woven Bag
Durable and lightweight
PP woven bags are extremely strong and offer great resistance against moisture and other environmental elements, which makes them perfect for storing and moving various goods. These bags are also lightweight and simple to handle, making them an ideal choice for packing and transportation.
Moisture-Resistant
Woven polypropylene bags are resistant to water absorption, making them ideal for industries that handle moisture-sensitive products such as food and agriculture. These bags also resist mildew and mold growth, keeping products fresh and hygienic. Moisture can cause spoilage and clumping of items like fruits, vegetables, cement, or chemicals, making these bags invaluable for transportation and storage. They are perfect for long-term storage and reduce the need for frequent replacement, ultimately saving you money.
Cost-Effectiveness
Woven polypropylene bags are a popular choice among businesses due to their cost-effectiveness. These bags are cheaper than alternatives like jute or cotton bags but offer the same strength and durability. This allows businesses to save money on packaging without compromising on the quality of their products.
Easy printing
Printing on woven polypropylene bags is an affordable and easy process, making them an excellent choice for packaging. Their smooth and flat surface ensures high-quality prints, and they can be printed using various techniques, providing flexibility in design options. The cost-effectiveness of printing on woven polypropylene bags is due to the affordability of the material and efficient printing process, reducing production costs.
Recyclable
Woven polypropylene bags are an eco-friendly packaging option as they are made of recyclable plastic. They are strong and durable, water-resistant and lightweight which reduces shipping costs. These bags are ideal for businesses that want to go green and reduce their environmental impact.
Long Storage Life
Woven polypropylene bags are created to last long. The bags are ideal for packaging products that need to be stored for long periods as they can provide reliable protection to their contents. Additionally, these bags can be reused many times without losing their strength, thereby promoting sustainability.
Types of PP Woven Bag
Polypropylene Woven Bags Plain
As the name indicates, plain PP woven bag are simple PP woven bags made with virgin plastic. The bags’ advanced properties like light-weight, tear-resistance, and durability make it a perfect option to store sugar, animal feed, grains, etc.
PP Woven Bags with Liner
These are the kind of PP woven bags with liner inside. Liner PP woven bag is the perfect packaging option for the material that requires the highest protection. These sacks are used to store and transport materials with finer particles such as chemicals, detergent, sugar, cement, etc.
Laminated WPP Woven Bag
When you coat the plastic bags with an extra layer of poly film, the resultant bags are called laminated PP woven bags The bags’ high tear strength, weather resistance, and anti-toxicity properties make it an ideal bag for storing and transporting content that needs to be saved from humidity and water.
Gusseted PP Woven Bag
Gusseted bags are the PP woven bags in which an extra piece of material is added to enhance the bags’ volume or capacity. Besides, the flat surface of the bag enables the sacks to stand erect without any external support.
BOPP Laminated PP Woven Bag
BOPP stands for Biaxially Oriented Polypropylene. It is a layer that is added as an extra layer to the PP woven bags to enhance its strength. BOPP laminated bags have higher durability and are attractive and durable. These bags are primarily used to store and transport multiple contents, including grains, animal feed, and fertilizers.
Application of PP Woven Bag
Agricultural Sector
PP woven bags are used in agriculture for many kinds of uses, most notably packaging and storage. Common uses for these bags cover the storage of grains, seeds, compost, and animal feed. Their sturdy design ensures a long time and quality maintenance to protect the contents from water, creatures, and other external variables. Furthermore, PP Woven Bags smell, helping airflow to keep food fresh and avoid spoiling.
Construction Industry
Sand, concrete, gravel, and rubble are among the construction industry’s most often carried and stored materials, and PP woven bags are essential for this job. Heavyweights and materials that are are easily handled by them because of their robust design and protection from tearing. Construction sites can use PP woven bags for outdoor storage because they are weatherproof and durable.
Retail and Packaging
Industries wrap and transport with PP woven bags. Because of their different sizes and configurations, these bags can carry an incredible variety of objects. They provide safe and secure transportation of items because of their lightweight yet robust construction, which makes them an excellent choice for handling and shipping.
Flood Control and Disaster Relief
PP woven bags play a role in rescue efforts during natural disasters like earthquakes and floods. These bags are delivered to affected areas with human resources inside, such as food, water, clothes, and medical supplies. Because of their ability to stand up to water, they are perfect for carrying and storing essentials in difficult settings, providing important help to people in need.
Waste Management and the Process of Recycling
Additionally, in managing waste and reusing it procedures, PP woven bags are used to collect and carry materials including paper, metal containers, and plastics. By making trash separation and collection easier, these bags facilitate the process of recycling and better awareness of environmental problems. Furthermore recyclable, PP weaved bags lessen their environmental effect and advance the circular economy.
The Gardens and Agriculture
PP woven bags are used for storing and transporting soil, mulch, fertilizer, and gardening materials in farming and landscaping. Their strong frames and air produce make them ideal for storing and transporting waste and soil, which promotes healthy plant development. Furthermore, PP woven bags are perfect for outdoor gardening applications since they may be customized with UV conditioners to survive extended sun exposure.
Animal Feed and Pet Food Packaging
Because PP woven bags and BOPP Bags are safe and waterproof, animal feed and food are usually packaged and stored in pouches. The feed’s quality and the animals’ safety are guaranteed by these bags, which also aid in maintaining the feed’s freshness and nutrition. Also, protective inside covers for PP woven bags can be added to extend the contents’ lifetime by providing additional security against moisture and pollutants.
Difference Between PP Woven Bags And BOPP Bags
Manufacturing
- PP woven sack or bag is a basic bag made with PP woven fabric. Without dye, the bags are white, soft and sturdy. With lamination they become little hard, but not as BOPP.
- The fabric used for making the BOPP bag is also PP woven. The only difference is BOPP bag encompasses the lamination of biaxially orientation film. The film is transparent, easy to print and laminate. It makes the BOPP bag befitting for branding and printing, and provide the required brittle.
Application
- PP woven sacks or bags has an evoking use in different industries. Primarily, it is used for storing different materials such as crops, chemicals, cement, etc. It is also used as a packaging material in the logistics industry.
- The BOPP bags are mostly used in the retail industry because it facilitates branding and printing. Additionally, biaxial orientation improves its strength, gives it a glossy appearance and required strength to carry weight. It is used for storing a wide range of materials, such as flour, sugar, rice, pulses, etc.
Properties
- Woven bags are called water-resistant bags because of the low water retention property of PP woven fabrics. However, a few PP woven fabric manufacturers are there who have customized the fabric and enhanced its water-resistant property. PP Laminated fabric is the result of the same.
- BOPP, on the other hand, has a better water resistance than regular PP woven bags. Because of its high moisture resistance, it is predominantly used for flour packaging. Its use is prevalent because it can safeguard flour from moisture for a longer period. On the other hand, PP woven bags though being a moisture resistance material, cannot be used to store flour directly. It is suitable for bulk packaging of flour packets. In this case, it acts as a second layer of protection.
Sustainability
Both PP woven bags and BOPP bags have polypropylene as the raw material. Therefore, on the parameter of sustainability, they both scores the same points. Both bags are durable and sustainable.
Size Of Bags
- PP bags, because of being primarily used for packing and storing different types of stuff, comes in a wide range of sizes. The large bags with the open mouth are called sacks, and the ones with handles are known as bags. There is another option called FIBC bags or jumbo bags. These bags are used for storing material in bulk. The other name of the jumbo bag is the 1MT bag as well.
- BOPP bags, because of being printable are used predominantly in the retail industry. Thus, it comes in limited sizes, such as 1kg bags, 5kgs bags, 10 kg bags, 50 kg bags, etc. Manufacturers do offer customization in size in these bags as well depending on the requirements.
Manufacturing Process of PP Woven Bags
Extrusion of Polypropylene Resin
The process starts with the extrusion of polypropylene resin. PP resin, in the form of small beads or pellets, is fed into an extruder machine. Inside the extruder, the resin is melted at high temperatures (around 200 to 300 degrees Celsius) and formed into a molten polymer.
Formation of Flat Yarns
The molten PP is then passed through a spinneret to form flat tapes or yarns. This spinneret has multiple holes, each corresponding to a tape that will eventually make up the woven fabric. The speed of the extrusion process determines the thickness and strength of the yarn.
Stretching and Drawing
The flat tapes are then stretched and drawn to align the polymer molecules, increasing the strength and durability of the resulting fabric. This stretching process also controls the width and thickness of the yarn, which will influence the final properties of the woven bag.
Weaving
The stretched tapes are woven using a circular loom or a flat loom. Circular looms are commonly used for tubular woven bags, while flat looms are used for flat woven fabric, which is later cut and stitched into bags. The weaving process interlaces the tapes, creating a strong and flexible fabric.
Lamination
In some cases, PP woven bags may undergo lamination for added protection. A thin layer of polyethene (PE) film can be applied to one or both sides of the woven fabric. This lamination improves the bag’s resistance to moisture and makes it more suitable for packaging products that require extra protection.
Printing
After the fabric is woven and optionally laminated, it can be printed with designs, logos, product information, or handling instructions. Printing is typically done using a flexographic printing process, where ink is applied to the fabric through flexible relief plates.
Cutting and Stitching
The printed woven fabric is then cut into panels of the desired size for the bags. These panels are stitched together using high-speed sewing machines equipped with special needles and threads designed for PP woven fabrics. The stitching creates the sides and bottom of the bags, leaving the top open for filling.
Hemming and Finishing
The top of the bag is folded over and stitched to create a hem, reinforcing the opening and preventing fraying. Some bags may also have a drawstring closure or other types of closures added at this stage. The finished bags undergo quality control checks to ensure they meet the required specifications.
Baling and Packaging
Once the bags are manufactured and inspected, they are usually baled for transportation and storage. Baling compresses the bags into compact, uniform bundles, ready for shipping to customers. Depending on the order, bags may be packed into larger containers for bulk delivery or palletized for easier handling.
The Considerations for Buying PP Woven Bag
Product Dimensions
Length, Width, and Height: This is the most crucial factor. The bag should comfortably hold your product without being too tight or leaving excessive extra space. Measure the length, width, and height of your product to determine the minimum required dimensions for the bag.
Headroom and Gussets
Headroom: This refers to the extra space at the top of the bag for easy filling and sealing. Consider how you’ll be filling the bag (manually or automatically) and factor in enough headroom for proper closure.
Gussets: These are expandable pleats on the sides or bottom of the bag that allow for additional capacity. Gussets are ideal for bulky or irregularly shaped items.
Weight Capacity
PP woven bags come in various weight capacities. Ensure the bag you choose can handle the weight of your product without the risk of tearing or breaking.
Additional Considerations
Stackability: If you plan to stack the bags for storage or transportation, consider their size and stability when filled.
Pallet Compatibility: If using pallets, ensure the bag dimensions are compatible with standard pallet sizes to optimize space utilization.
Prolonging the lifespan and establishing a circular life cycle for plastics stand out as highly effective strategies to minimize carbon footprint, energy consumption, and landfill waste. Typically, both consumers and producers of PP woven bags contribute to this effort by:
Reusing old PP woven bags
Since woven bags are cost-effective, light in weight, and resistant to tear and humidity, PP woven bags are found in various industries. For instance, they are employed in agriculture for storing items like rice, flour, and seeds, as well as in construction for material and debris storage. These bags, including sacks or FIBCs, are 100% reusable and recyclable. If there are no significant damages, they can be economically and sustainably reused even after the initial consumption.
Recycling PP woven bags
However, if the PP woven bags reach the end of their functional life, they should be collected, recycled, and reprocessed to new PP products. Whether you're a producer or recycler, pelletizing is the most effective way to recycle PP woven bags.
How Can I Clean PP Woven Bag?
Step 1: Preparing the Cleaning Solution
First of all, collect needed instruments for cleaning: a soap liquid, soft bristle-brush or sponge, a pail, and tee water. Do not use strong chemicals such as chlorine or bleach, which can tear the cloth. Warm the water in the bucket and add some mild detergent, then make sure it dissolves properly.
Step 2: Spot Test
A spot test should be made on an invisible portion of the PP woven bag to determine whether other items will need cleaning as well. It will also assist in evaluating if there is any harm that comes with using the clearning solutions including color fades and damages on fabrics. Dab some of the cleaning fluid on the area using a soft bristles brush or sponges. Clean the site using clean water, then dry it out. Move on at this point if nothing negative is observed.
Step 3: Cleaning PP Woven Bag
Soak the soft bristle brush or sponge with the solution and then gently scrub out the surface of the PP woven bag. Always focus on stain and dirt areas; scrub them hard enough with special care required when it is necessary. Do not scrub too much, lest you damage the fabric or start unravelling it. The cleaning must be thorough without over-saturation of the material working in small parts.
Step 4: Rinse and Repeat
As an experienced PP woven bag manufacturer we would suggest that clean water should be used to wash off soap after scrubbing. Rinse well to make sure that the water runs clear and leaves no soap. In case of persistent spotting and heavier grime, repeat it all over again. On the other hand, refrain from over-rinsing since rinsing more than necessary could damage the fabric or harm its quality.
Step 5: The PP Woven Bag is dried
After scrubbing it out, just gently pour out the excess water from the PP woven bag and do not twist or wring it. Place it horizontally on a clean and dry surface, somewhere well-ventilated, away from direct sunlight. Air dry it completely before use or storage. Do not use a dryer on a hot setting and do not expose the item to significant heat as this can make material tear and shrink.
Step 6: Stain Removal Techniques
Yet extra procedures may have to be followed for particular sorts of inks to produce effective results. Here are a few common stain removal methods:
– Oil or Grease Stains: Dab the stained area with a paper towel to remove more oil/grease. Rub the stained area with a bit of dishwashing liquid on it by using a soft-bristle brush or sponge. Rinse thoroughly with clean water.
– Ink Stains: Use a dampened cotton ball with either rubbing alcohol or isopropyl alcohol to dab at the stain. Wipe off the stain gently without rubbing since it can spread the ink. Use clean water for rinsing and, if required, repeat it.
– Food or Beverage Stains: Use a clean cloth or paper towel to blot out any surplus residue. First, use a mixture of warm water and mild detergent to create the blot on the fabric; then kindly rub it off using a soft-bristle brush or sponge for cleaning it. Rinse thoroughly with clean water.
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Our Factory
Our company is located in Rainbow Smart Entrepreneurship Park, Longgang City. Producing and exporting non-woven bags for more than 10 years. The main products are non-woven bags, woven bags, Lixin bags, thermal insulation bags, drawstring bags, and cotton bags. Product quality is stable and reliable, and customers trust it.
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Ultimate FAQ Guide to PP Woven Bag
As one of the leading pp woven bag manufacturers and suppliers in China, we warmly welcome you to wholesale cheap pp woven bag from our factory. All custom made bags are with high quality and competitive price.