PP Woven Bags - Wenzhou Mou'an Packaging Co., Ltd.

PP Woven Bags

PP woven bags are a type of packaging solution known for their exceptional strength, durability, and versatility. Made from polypropylene (PP) woven fabric, these bags offer reliable and efficient storage and transportation for a wide range of products. They are commonly used in industries such as agriculture, construction, chemical, and food. PP woven bags are highly resistant to tearing, moisture, and UV radiation, ensuring the integrity of the contents. With their lightweight design and customizable printing options, they serve as effective marketing tools. Whether it’s packaging grains, seeds, fertilizers, or consumer goods, PP woven bags provide reliable protection and convenient handling for various applications.

PP Woven Bags Applications

PP woven bags are highly versatile and widely used in numerous industries for their excellent strength, durability, and functionality. They find applications in packaging various products, including agricultural commodities, chemicals, construction materials, and consumer goods. These bags are commonly used for storing and transporting grains, seeds, fertilizers, cement, sand, and other bulk materials. They are also utilized in the food industry for packaging rice, flour, sugar, and animal feed. Additionally, PP woven sacks are popular in the retail sector as reusable shopping bags. Their robust construction and customizable printing options make them an ideal choice for branding and promotional purposes.

flour bags

Flour Bags

Mou’anPackaging offers different grades of polypropylene woven flour bags to meet different customers’ quality and cost requirements. Either

Sand Bags

Sand bags

Sand bags are now applied in flood controlling, building material earth bags, traffic controlling etc., but when it

FIBCS

FIBCs

FIBCs is the abbreviation of flexible intermediate bulk containers, also known as jumbo bags, bulk bag, baffle bags

Construction waste bags

Construction Waste Bags

Construction waste bags are generally made from dark green or black colors of pp woven fabric. It requires

All-Purpose Bags

All-Purpose Bags

All-purpose bags, some standard sizes and thickness of pp woven bags we keep in stock are for all-purpose

PP Woven Bags : The Complete Intruduction

For the following content, we are going to share our knowledge and practical experiences about pp woven bags industry.

  1. What are PP woven bags?
  2. Various names of PP woven bags
  3. Woven polypropylene industry jargons explanation.
  4.  Characteristics of Polypropylene woven bags
  5. Manufacturing process of PP woven bags
  6. Why are PP woven bags suitable for packaging use?
  7. Is PP woven bags eco-friendly?
  8. Can PP woven bags be printed?
  9. Different applications of PP woven bags
  10. HS code of Polypropylene woven bags.
  11. How to customize PP woven bags?
  12. How to start a PP woven bags processing factory?
  13. What do we offer besides Polypropylene woven bags?
PP WOVEN BAGS

1. What are PP woven bags?

Let’s break this question into three sections.

1) Woven.

Woven, or weaving is an approach by several strings or tapes woven in two directions (warp and also weft), to form a fabric for plastic industry requirements.
In the plastic woven industry, with a plastic film is drawn right into filaments, then woven right into fabric/sheet/cloth. It can be into a tarpaulin, woven bags, FIBC, geotextile materials, colored cloth and more.

To shape the plastic film into a fiber, it’s a kind of technic which was involved by the industry of plastic, but for the process of weaving filament into PP woven fabric, it should be classified into textile industry. Different industry classification leads an important difference of index which is used to describe thickness of fabric. In plastic industry, GSM( grams per square meter) is more commonly taken, but in industry of textile, it’s more frequently to use Denier. How to covert gsm to denier? A broad formula to convert is,

GSM=DENIER/YARN WIDTH/ 4.5

DENIER=GSM*YARN WIDTH*4.5

For detailed information, please refer to our technical article How to cover denier of pp woven fabric to gsm.

2) Woven polypropylene.

Polypropylene, which is likewise referred to as PP for short name, it’s a kind of thermoplastic resin material that generated by the polymerization of propylene.
Woven polypropylene is polypropylene tapes/threads that have actually been woven in two instructions (warp and also weft) to shape a light, yet solid as well as strong material.

3) PP Woven bags.

Construct with circular woven polypropylene material, slit the circular woven fabric into a certain length pieces, one side sewn as bottom, leave the top side open, there the basic type of PP woven bags is simply done.

2. Various names of PP woven bags.

1) PP Woven bags = PP woven sacks

When we talking about a BAG, we mean a flexible container which is made by plastic, paper or cloth etc. And SACK is a kind of bag, especially a large bag made by strong, coarse material for storage and handling of various commodities, such as grains, fertilizer, feeds, rice and so on. Though we suppose there must be some difference when people just start to use words of ‘bag’ and ‘sack’, users now are treating them the same, they just choose either bag or sack as they like. As we experienced, more users are using BAG than SACK nowadays.

2) Different names of PP Woven bags.


Woven polypropylene bags, PP bags, WPP bags, Woven bags, Woven PP sacks, Woven Poly bags, Polypropylene sacks.


3) Application names of PP woven bags.

Rice bags, sugar bags, flour bags, salt bags, fertilizer bags, chemical bags, sandbags, cloth bags, activated carbon bags, grain bags, seed bags, feed bags, big bags…

3. Woven polypropylene industry jargons explanation.

  • Polypropylene – A type of polymer used for manufacturing monofilament and multifilament yarns and tapes. It is recyclable and it’s our standard basic material for PP woven bags.
  • Woven – Knitting with many PP yarns in two directions (warp and weft) to form fabric.
  • Yarn / Tape – Narrow sheets of extruded Polypropylene, it’s slit and stretched in annealing ovens, then be rewinded on bobbins before be sent to circular looms.
  • Tubular PP Woven Bag – Also called a circular PP woven bag, it is made from fabric which was woven by circular loom.
  • Warp – One direction of Yarn or tape from the fabric, oriented perpendicular to the Weft yarn while weaving. Tape from this direction would goes from top to bottom of woven fabric.
  • Weft – One direction of Yarn or tape from the fabric, orientated perpendicular to the Warp yarn while weaving. Weft tapes were those in horizontal direction of woven fabric.
  • Fabric Weight – Commonly use GSM( grams per square meter) to measure.
  • Denier – Weight of yarn in grams each 9,000 meters long.
  • Density– Mesh of warp x weft of the fabric weave, measured by numbers of yarns per square inch. Like 10×10, 12×12, 14×14 etc.
  • Top Hemmed / Hemming – A fold and sewing process which prevents fraying of cut fabric in the top of the bag. This also provides a clean finish to the PP woven bags. Sometimes when the bags needs LDPE/HDPE Liner inserted, part of them needs to be sewn on the mouth of the bag while doing hemming.
  • Printing Design – Artworks approved by the buyers or users which will be carved on plates or cylinders and finally be printed onto the bag body.
  • Breathable Fabric / Bags – Uncoated or non-laminated fabric / bags.
  • Coated Fabric / Bags – Fabric or bag which is coated / laminated with surface film for moisture proof purpose. Also was named Non-breathable or Laminated fabric / bags.
  • Bag Size – Width x length. Length of the PP woven bags need to be measured from the Top Seam to the Bottom Seam of the bag body..
  • UV Stabilized – A feature that provides extra protection for the PP woven bags, which   will delay the degradation rate of woven bags under sunlight. Common operation is to add a certain percentage of sun-screening agents into polypropylene material before extrusion.

4. Properties of PP woven bags.

Benefit from the excellent performance of polypropylene material, and the durability and breathability of weaving method. PP woven bags got the properties as follows,

  • PP woven bags are reusable.
  • PP woven bags are naturally resistant to tear.
  • PP woven bags can be made of transparent for outstanding visibility.
  • PP woven bags performs good for printing.
  • PP woven bags don’t degrade easily.
  • PP woven bags are breathable.
  • PP woven bags can be coated or laminated for moisture proof.
  • PP woven bags are cost friendly.

5. Manufacturing process of PP woven bags.

Manufacturing process of PP woven bags mainly includes following steps,

  • Extrusion drawing of pp tapes.
  • Circular Weaving.
  • Coating and lamination.
  • Cutting and sewing.
  • Baling
PP woven bags manufacturer

For specific manufacturing process of PP woven bags, please refer to our article: Manufacturing Process of PP Woven Bags

6. Why are PP woven bags suitable for packaging use?

  • Non-toxic
  • Non-stained
  • Durable and fully reusable
  • Easy to clean and Anti-bacterial.
  • Could be breathable or even visible (Transparent).
  • High operation temperature with melting point of 167°C
  • Could be moisture proof with coated or laminated.
  • Outstanding resistance to stress and high resistant to tear.
  • Resistant to most alkalis and acid, organic solvents, degreasing agents

7. Is PP woven bags eco-friendly?

Yes, PP woven bags are eco-friendly. It can be recycled and melted down. Recycled polypropylene material could be granulated and be the material of inferior quality level of PP woven bags. Besides, under proper application conditions, PP woven bags provide long service life, up to 4-5 years.

8. Can PP woven bags be printed?

Yes, sure. Polypropylene fabric is a perfect material for printing. For common-use pp woven bags, flexographic printing method is usually taken due to its cost-effective advantage. And for those users who need the bags to be printed with complex artworks, to do rotogravure printing on BOPP film and then laminate the printed BOPP film onto PP woven fabric would be a terrific choice.

9. Different applications of PP woven bags.

  • Agricultural products packing

PP woven bags are widely used for transporting and storing agricultural products such as grain bags, seed bags, feed bags, fertilizer bags, cotton bags and so on.

  • Foods packing

PP woven bags could be made in food grade, and as package of rice, flour, sugar, maize, condiment etc.

  • Geotechnical engineering

PP woven fabrics are extensively used in the construction of irrigation works, roads, railways, ports, mines, buildings, and so on. With the functions of filtering, draining, and anti-seepage, PP woven fabric has been one of the most popular geosynthetics.

  • Tourism and transportation

Temporary tents, sunshades, and various types of traveling bags could be made by PP woven fabric. What’s more, plastic woven fabrics can also be used as fences and screens during construction.

  • Flood controlling products

Woven bags played an important role in reducing or preventing the detrimental effects of flood. They are widely used in the construction of dams, river banks, roads and railways. And woven PP made sandbag is the most popular type of sandbags all around the world.

  • Special applications

PP woven bags are sometimes been customized with particular features for special applications. For example, UV resistant PP woven bags are with UV protection and anti-aging function that ensure bags with longer lifespan under the sunlight. Another case in point is anti-slip weaved pp woven bags, that is specially made for user who will stack the packed products high.

10. HS code of Polypropylene woven bags.

International Convention for Harmonized Commodity Description and Coding System Codes,

  • PP woven bags, 63053300.90 (Sacks and bags for the packing of goods, of polyethylene or polypropylene strip or the like, not knitted or crocheted)
  • PP woven fabric, 54072000.00 (Synthetic fiber flat and similar products woven fabrics)

11. How to customize PP woven bags?

We need to know as much as possible for the following details,

  1. Is this an existing project that you could provide technical sheets for the PP woven bags or it’s a new project and you will need us to recommend you with proper size and thickness?
  2. What content you will use these batch of PP woven bags to pack with?
  3. What’s the capacity of the PP woven bags are you requiring?
  4. Any idea of exact size?  Or even an approximate size would help.
  5. Here are some commonly used typical PP woven bags sizes for your reference,
  6. What’s the quantity of the PP woven bags that you require?
  7. Need the bags to be printed or just plain white?
  8. Need the PP woven bags to be breathable or moisture proof?
  9. What’s the lead time you need us to offer?
  10. Please choose following features for the PP woven bags that you require.
  • Top: Straight cut, zigzag cut, or Hemmed.
  • Bottom: Single thread sewn, double threads sewn or sealed with paper tapes.
  • With or without edge gusset.
  • Inserted PE Liner for moisture proof needed?
Customized feature options of pp woven bags

12. How to start a PP woven bags processing factory?

How to set up a woven bag processing factory? We are frequently asked by investors from abroad. Although woven bags are widely used all over the world, the weaving bag factories are still located in Asian countries such as China, India and Vietnam. In many countries where woven bags are commonly used, there are no woven bag factories. What is the reason for this? Some of them are due to technical problems. Although the equipment shortage can be solved by importing, there are no skilled workers locally. When the equipment operation failure occurs, no technicians can solve the maintenance problems timely and accurately. Even if the technical problems are solved, the damage of machine parts still needs to be solved by importing, too much time consumption, it affecting production progress. In addition, the investment in the woven bag factory is quite huge, especially the production line of PP woven bag fabric, from drawing to Circular loom weaving, the investment could be millions of US dollars, which is not affordable for small and medium-sized investors. Thus, to set up a factory with half production process for PP woven bags is more economical and achievable.

What equipment are required for a half production line PP woven bag processing factory?  Following, we will briefly introduce about the investment of pp woven bag processing factory which is oriented by the demand of the medium and economical woven sacks.

  • 1 or 2sets of sewing and cutting machine ( 2 in 1 machine). (Around 16,000USD per set, some model with lower mechanical properties would costs 13000-14000 USD/SET)
  • 1 set of flexographic printing machine with 4color or 6color.( Around 30,000USD for 4colors)
  • 1 set of packing machine.
  • Inks and threads.

Finally, the most important, To import regular size and thickness of pp woven fabric rolls from manufacturer like us do.

That’s all what a basic pp woven bags processing factory need to start with, then to increase the number of machines while you get more and more orders. And perhaps, if the customers need the bags to be coated, or with colorful design printed. A set of extrusion coating machine and gravure printing machines will be needed.

13. What do we offer besides PP woven bags?

  • PP woven fabric rolls exporting.
  • PP woven bags production consultant.
  • PP woven bags making machines exporting.
  • Accessories exporting including sewing threads, plates, cylinders, and machinery parts.
  • Any other extra supports we are able to offer for our dear customers.
Packaging Category​

News & Articles

SUNSIRS:The cost transmission effect is limited, and Polypropylene price fell after rising in March

According to the data monitored by SUNSIRS, the PP market fluctuated in March. On the whole, the spot prices of various brands rose. As of March 31, the mainstream offer polypropylene price of T30S (Extruding grade) from China domestic manufacturers and traders was about 8990 yuan / ton, with an increase or decrease of + 5.64% compared with the average price at the beginning of the month Polypropylene price changing Cause Analysis. Industrial chain: upstream, the propylene market trend in March is mainly divided into two stages, a substantial rise

How to choose printing ink for non-laminated pp woven bags

PP Woven bags are mainly divided into non-laminated woven bags and laminated woven sacks. The corresponding two main printing methods are flexographic printing and gravure printing. In this article, we will discuss how to choose printing ink for non-laminated pp woven bags with flexo printing, which is most commonly used in non-laminated woven bags. In flexo printing, firstly, the pattern should be engraved into a plate with resin material, and then the plate should be bonded to the round roller of the printing machine. The operation of the round roller

Production Process of Polypropylene Woven Bags

Production process of Woven polypropylene bags contains knowlege about plastic industry, textile weaving, and even chemistry.  This article is going to introduce the complete production process of how the polypropylene resin becomes a finished woven polypropylene sack step by step. Sumarize of Woven polypropylene bags production process. Overall, though the production process of woven pp sacks requires multiple equipments, it’s still an industry with simple process flow, easy control of process parameters, easy equipments operation, high production efficiency. Actually it’s mostly benefited from its stable and reliable equipments with safe

Chinese Polypropylene Market reports of July

Recently, the international PP market fluctuated, and the spot prices of various brands fell as a whole. As of July 26, the mainstream offer price of T30S (Drawing grade) which is used from PP woven bags making from Chinese domestic manufacturers and traders was about 8516.67 yuan / ton, a decrease of 0.97% compared with the average price at the beginning of the month and an increase of 5.58% year-on-year. Reasons Analysis The domestic (Shandong) market of PP upstream propylene in China last week turned its peak and continued to

How to Reduce the Aging Rate of Plastic Woven Bags?

Woven bags are widely used, but with the increasing use of time, woven bags will also have an aging phenomenon. As we all know, plastic  woven bags are made up of polypropylene bags and polyethylene bags according to their main materials. They are divided into sewing bottom bags and sewing edge bottom bags according to sewing methods. They are widely used in express transportation, agricultural fertilizer, container cement, commercial products, chemical products, and another packaging. So how to reduce the aging rate of plastic  woven bags to a certain extent, and prolong their

How to identify the quality of woven bags

Polypropylene woven bags are widely used in flour mills, rice mills, feed mills, fertilizer plants and other industries, but many users do not know how to identify the quality of woven bags. In the process of purchasing woven bags, purchasers do not know how to carry out proper quality acceptance for the purchased woven bags. It is too late to find the broken woven bags in the process of using them. In this paper, we will introduce the tension tester which is the most commonly used instrument in the process

Gravure Printing for Woven Bags

This article will continue to explore the printing method of woven bags. In the previous article “Can PP Woven Bags Be Printed?”, we have introduced the characteristics and working principle of flexographic printing. In this article, we will introduce another relatively high-end and high-cost printing method – gravure printing in the production of woven bags. Woven bags laminated with gravure printed film 1. Working principle Gravure printing is a direct printing method, which directly imprints the ink contained in the concave pit on the substrate. The thick and light level

How to Set Up a Woven Bag Processing Factory

How to set up a woven bag processing factory? We are frequently asked by investors from abraod. Although woven bags are widely used all over the world, the weaving bag factories are still concentrated in Asian countries such as China, India and Vietnam. In many countries where woven bags are frequently used, there are still no woven bag factories. What is the reason for this? Some of them are due to technical problems. Although the equipment shortage can be solved by importing, there are no  skilled workers in production technology. When

Can PP Woven Bags Be Printed?

The answer is definitely yes, and woven bags are printed in a variety of ways. Among them the most important are flexographic printing and gravure BOPP lamination printing. According to the different needs of end customers for the printing quality and cost of woven bags, the manufacturers of woven bags should provide customers with corresponding printing options. In this article, we will give a brief introduction to flexographic printing. Flexographic printed pp woven bag Flexographic printing is a printing method which uses flexible printing plate and transmits ink through the

Masterbatch and Additives for PP Woven Bags Production

Considering the production cost or some functional purpose, in addition to polypropylene, which accounts for the largest proportion of the raw materials of pp woven bags, additives such as masterbatch, whitening agent, UV ray retardant and flame retardant are added. In order to increase the chemical stability of polypropylene and reduce the production cost to a certain extent, the addition of masterbatch is an important part of woven bag materials. Manufacturers have been looking for a perfect balance between tensile strength and production cost when producing and designing woven bags,

How to Produce PP woven Bags

The key to producing high-quality PP woven bags lies in meticulous attention to detail and adherence to stringent manufacturing standards throughout the production process. Starting with the selection of premium polypropylene (PP) granules as raw material ensures the bags possess the requisite strength and durability. Precision in extrusion and weaving processes is crucial to maintaining consistent fabric quality, while optional lamination with materials like kraft paper or BOPP film enhances the bags’ properties further. Utilizing advanced printing techniques ensures clear and durable graphics, contributing to the bags’ visual appeal and branding potential. Moreover, employing skilled operators and state-of-the-art machinery for cutting, stitching, and finishing operations ensures uniformity and structural integrity in the final products. 

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Leading pP woven bags manufacturer from China

Wenzhou Mou’an Packaging is a PP woven bags manufacturer established in 2003 which is located in Wenzhou, China. It professionally create PP woven fabric rolls, PP woven bags and laminated woven bags to  worldwide clients especially in the markets of agricultural and industrial.
Continuously developing footprints witnessed how the Mou’an team realized its international ambitions from a family base business.
In close co-operation with its partners from over 40 other countries, Mou’an packaging learned how to achieve its own success by helping customers to success.

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