plastic bags/sacks for wood pellets manufacturer in China - bulk bag

plastic bags for wood pellets

Our PP Big bag - Feature:

• Sizes & designs can be tailored to individual needs.
• Fabric can be coated, uncoated, and colored.
• Siftproof for dust prevention or leakage.
• UV-treatment available
• Various lifting options, filling options, and discharging options.
• Food-grade liners available for food packaging.
• Safety factors 5:1 (for single-trip use), 6:1 (UN-approved), and 8:1 (for multi-trip uses).
• All bags have a document pouch and handling label.

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Questions you may interest

Q: What is a bulk bag?A bulk bag is a large bag used for storing and transporting free flowing dry products. Usually made from woven polypropylene, with standard base dimensions of 35"x35" and a variable height generally up to about 96". Bulk Bag dimensions can vary widely, based on user need and usability. Bulk Bags typically hold about 2000-4000 lbs. of product. Bulk Bags can be placed on pallets or lifted by standard lift loops attached to the bags themselves.

Q: What are bulk bags made from?100% virgin polypropylene, which is a petroleum based product.

Q: What is woven polypropylene made from?Woven polypropylene is made from extruded polypropylene resin, which is made from petroleum feedstocks.

Q: Are bulk bags water-tight or water proof?No, since a bulk bag's fabric is made from a woven material, the bag is not "water proof". Users usually want a coating or lamination as a moisture barrier, by moisture barrier we mean a light amount of condensation or light amount of water. Lamination is simply a moisture barrier, however the use of an internal poly liner works best in many typical applications, technically it still is not 100% water proof. The difference between using a coating/lamination or using a liner is in the amount of moisture that you are trying to keep out of the product, and how much you want to assure that this does not occur. Standard bulk bags are not water proof, and are not typically designed to carry wet products, however there are other type products in the market designed to hold liquid, i.e. liquid liners.

Q: How do you empty a bulk bag?Bulk bags are usually emptied by a discharge spout, which is a spout that is attached to the bottom of the bulk bag. Usually the discharge spout is tucked inside a closure on the bottom of the bag. The closure is sometimes called a petal closure, pajama closure, star or x-cut closure. The closure is designed to protect the spout and to prevent the product from sifting out of the discharge before it's intended discharge. Discharge spouts can be customized with specific sizes and closures.

Q: Can I reuse a bulk bag?Yes,bulk bags can be reused. This requires a multi-trip bulk bag, which is made with a 6:1 Safety Factor. This type of bag is designed to be used for a specific amount of uses. Some users reuse bulk bags with a 5:1 SF, in fact it is a common occurrence. We do not recommend this practice, as reusability must also take into consideration the reality that the bag may be worn, or have a small hole in the fabric, the loops could be unstable etc. Reuse of a 5:1 SF bulk bag, which covers the majority of bulk bags seen in the market, is not recommended.

Q: What does 5:1 SF mean?A standard bulk bag is rated at a 5:1 Safety Ratio, which means that the bag is specified to hold 5 times the amount of the bags safe working load. A 5:1 Safety Ratio is for single use or single trip bags. Bags that are designed for multi-use or multi-trip bags, are made with an increased SF ratio. The SF for a multi-trip bag is 6:1. Q: Can I patch a bulk bag? Patching a bulk bag is possible, but not recommended, and solely at the users discretion and risk.

MORE ABOUT US

Yantai Evergreen Packaging Co., Ltd. is professional manufacturer with four factories, and we have engaged in this industry for 20 years and11 years as alibaba supplier.Experiencing rapid growth, our products now includes woven pp bags, flexible container bags, refuse bags and self-sealing bags. Available in numerous specifications, and able to be custom-produced, these series fully conform with national quality standards, and are applicable for the packaging of grain, feed, cement, chemical fertilizer...