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Factory
Linyi Flywheel Plastic Products Co., Ltd. was established in 2003. The company invested 5 million US dollars and currently has more than 300 employees, including more than 20 technicians with the latest production technology.
Our service
The company actively promotes the scientific management model of modern enterprises. Development, innovation, honesty and trustworthiness are the company's purpose. Customer satisfaction and customer service are the company's purpose. We are willing to provide customers with more high-quality products and sincerely hope to cooperate with you!
Quick response
We try our best to reply to all questions within 24 hours. If there is any emergency, our team is at your service at any time
Production market
Our distribution channels are all over the world, and our customers cover more than 30 countries and regions.
Standard Woven Bags
Standard woven bags are the workhorses of the packaging world. They are robust, cost-effective, and ideal for heavy-duty applications. These bags are commonly used in industries like agriculture and construction for their exceptional durability.
PP Liner Bags
Liner bags are the perfect fit for products that require high protection from air, sunlight, and water. It can be used to transport snacks which are usually stored in airtight containers to keep them away from air and moisture. The use of liner bags will make sure that the product is well protected. Liner Bags can not only be used for snacks but also for sugar and other powder products like detergent powders.
PP Plain Bags
PP plain bags are great for storing food grains and animal feeding grains as it is tear-resistant and strong enough to hold the bulky weight of grains. It can be used to store the grains for a longer period. It will make the transportation of food grain much safer and not at all messy. Buy our best quality PP plain Bags.
Gusseted Bags
An extra layer of material is added to the bottom of a bag or on the sides of the bag which adds volume and a boxy space that supports the bag to stand upright. These bags are best suited to keep food items like cookies, nuts, bread, and many more products.
PP Laminated Bags
When Poly film is coated on plastic Bags it is known as Laminated Bags. Laminated bags enhance the look of the packaging and make the product identity much more clear. These bags are best if the product has to be stored for a long time. It is lightweight and strong so it makes the packaging tear-resistant. Products like food grains can be stored in PP laminated Bags.
BOPP Laminated Bags
Bopp stands for Biaxially Oriented Polypropylene. A thin layer of it is added on the top of the Laminated Bags to enhance the strength of the bags. Adding BOPP to the bags makes the look of pp bags look nicer than before. It is also durable. BOPP Laminated Bags are a great fit for transporting bulky goods.
Polypropylene Preparation: Polypropylene granules are melted and extruded into long tapes.
Spooling: These tapes are then wound onto large bobbins, preparing them for the weaving process.
Warping: The vertical tapes, as the warp, are set up on the loom first. They are stretched out lengthwise and held under tension.
Spacing: The warp tapes are spaced evenly to ensure a uniform weave.
Introducing the Weft: The horizontal tapes, or weft, are then interlaced with the warp tapes using a shuttle.
Over and Under Pattern: The weft tapes are passed over and under the warp tapes in a systematic pattern, creating the weave.
Tightening the Weave: The newly introduced weft tape is pressed down tightly against the preceding weft tape, creating a compact fabric.
Quality Check: The pp woven fabric is inspected for any defects or irregularities in the weave.
Cutting: The fabric is then cut from the loom once the desired length is achieved.
Finishing Touches: Depending on the intended use, the fabric may undergo additional finishing processes such as coating or treatment for added properties.
PP woven bags
These bags are a staple in packaging, known for their strength and durability. Pp woven bags can carry substantial weight, making them perfect for packaging food grains, fertilizers, and other bulk items. Their resistance to wear and tear ensures that the contents stay protected.
Bopp bags
Biaxially oriented polypropylene (bopp) bags are a type of packaging that combines the strength of pp woven fabric with the visual appeal of a glossy finish. These bopp bags are perfect for packaging products that require a clear and attractive appearance, such as retail items or food products.
Paper polybags
By combining the tactile and visual appeal of paper with the strength of pp woven fabric, paper poly bags offer a sophisticated packaging solution. Often used in retail, these bags are sturdy, visually pleasing, and provide a high-quality feel.
Geotextiles
Pp woven fabric is used to create geotextiles, which are utilized in civil engineering to reinforce soil and promote proper drainage. These fabrics help stabilize the ground, making them essential in road construction and landscape engineering.
Construction silt fencing
In construction sites, pp woven fabric creates silt fences that help control sediment runoff. These barriers prevent soil erosion and protect nearby water sources from pollution, showcasing the material’s environmental applications.
Landscape covers
The durability and resistance of pp woven fabric make it suitable for creating protective covers for agricultural and landscaping purposes. These covers help protect crops from harsh weather conditions, pests, and excessive weed growth while allowing water and nutrients to seep through.
Manufacturing process
PP woven bags are made by weaving together polypropylene fibers to form a fabric. This process creates a tight interlocking weave that provides excellent strength and durability. The woven structure also helps to prevent moisture from penetrating the bag, making it ideal for storing and transporting heavy items and products that are sensitive to moisture.
Physical structure
PP woven bags have a tight, interlocking weave that provides excellent strength and durability. The tight weave also makes the bag more resistant to tearing, puncturing, and other types of physical damage. In contrast, PP non-woven bags have a softer and more flexible structure that is not as strong as woven bags.
Properties
PP woven bags are strong, durable, and moisture-resistant, making them suitable for storing and transporting heavy items and products that are sensitive to moisture. They are also resistant to UV light, which helps to extend the life of the bag and the products it contains. PP non-woven bags, while not as strong as woven bags, have the advantage of being softer and more flexible, making them easier to handle and less likely to cause damage to the products they contain.
Cost
While PP woven bags tend to be more expensive than PP non-woven bags, the added durability and versatility make them a good investment for many aPPlications. However, for aPPlications that do not require a strong and durable bag, PP non-woven bags can be a more cost-effective option.
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.
Spot test
A spot test should be made on an invisible portion of the bag or material 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.
Cleaning pp woven bag or fabric
Soak the soft bristle brush or sponge with the solution and then gently scrub out the surface of the bag or fabric. 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.
Rinse and repeat
As an experienced pp woven fabric 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.
The pp woven bag or fabric is dried
After scrubbing it out, just gently pour out the excess water from the bag or cloth 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.
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.
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.
As one of the most professional pp woven pack manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to buy cheap pp woven pack from our factory. For more information, contact us now.
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