What is an FIBC?

Flexible Intermediate Bulk Container. This is a technical determination for bulk bags. Also called big bag, jumbo bag, bulk bag, ton bag or super sack.

What is a bulk bag?

A bulk bag is a large bag that is used to store and transport free flowing dry products. Bulk bag dimensions can vary widely, based on user need and usability. Bulk bags typically hold about 500kgs-3000kgs of product. Loading weight can be customized at customer requests. Bulk bags can be placed on pallets or lifted by standard lift loops attached to the bag themselves.

What are bulk bags made from?

Bulk bags are made from 100% virgin polypropylene.

What is woven polypropylene made from?

Woven polypropylene is made from extruded polypropylene resin, which is made from petroleum feedstocks.

What does SWL mean?

Safe Working Load. This is the maximum amount of total weight the bag is rated, tested, and guaranteed to carry safely.

SWL of Shandong Dapoly Group FIBC big bags mainly is 1000kgs or 1500kgs, loading weight can be customized at customers requests to ensure quality workable to customers use and safe.

What Does 5:1 or 6:1 safety factor mean?

The bag is rated to hold 5 times the SWL (Safe Working Load) that is listed on the label. This does NOT mean you can load the bag with more than the SWL rating, but that the bag is designed with a “safety” factor of over compliance.

What does coated or laminated bag mean?

A coated or laminated bulk bag is constructed with fabric that has a thin layer  of polypropylene bonded to one side. Coated bags provide a moisture barrier from condensation or low amounts of water. Coated bags do NOT provide complete 100% waterproofing. For greater protection, consider bags equipped with liners.

What are bags with liners?

Linners mainly is polyethylene linner, also called PE inner bag,  FIBC bags can have plastic liners either inserted loosely or attached to the inside of the big bag. It can be customized at customer requests. Most of Bulk Bag manufactured by Shandong Dapoly Group stock lined bags are fixed inside with tabs during manufacturing. We also sell bulk bag liners which can be installed into most unlined bulk bags. Lined bulk bags offer good moisture and contaminate protection, but unless specifically made for liquids, they are not 100% waterproof.

What are baffle bags?

Baffles are pieces of fabric inside of the bag that are sewn to each corner. The baffles help the bag maintain a cubed shape when filled, preventing the bag from bulging. Baffled bags maintain a rigid shape and are more efficient in their use of space.

What is the difference between duffel top and open top?

A duffel top bulk bag is essentially a bag with a lid. It like a skirt on top mouth of bag body. It has a lightweight panel on top. Also called top mouth skirt type. It can be opened and tied closed. An open top bulk bag is a bag without a closure, keeping the product exposed.

What does fabric weight mean?

Fabric weight, also called thickness of fabric, it refers to the actual weight of the fabric of which a particular bag is constructed of.  Fabric weight units may be listed GSM (grams per square meter) or in ounces (ounces per square yard). Conversion (1oz. per 34 GSM). Fabric weights correlate closely to overall bag weight carrying capacity or Safe Working Load (SWL). Higher SWL bags will have higher fabric weights. FIBC Fabric weight of Shandong Dapoly Group can be from 90g/sq.m to 260g/sq.m, it help us produce quality bags at best cost controlment. About small PP woven bags, we produce from 40g/sq.m to 140g/sq.m.

What is bulk density?

Bulk density is the property of the product that you are filling into the bulk bag. It is the mass of the product divided by the volume it occupies. The volume includes the space between particles as well as the space inside the pores of individual particles.

What is a fill spout?

A standard fill spout is a spout with a 14” diameter opening in the top (center) of the bag, usually 18” long. It is designed to allow the user to fill the bag, minimizing dust occurrences as the bag is being filled. Diameter and Height/ Lenght of spouts can be customized to fit an individual application, to ensure workalbe to different filling machine.

What is a perimeter band?

A perimeter band is a band sewn around the outside perimeter of the top of a bag, which is designed to give extra strength to loops when lifting. Also called safe belt, can be sewn on top, middle or bottom, or all the 3 parts of bag if needed.

What is a B-lock?

A B-lock is a spout accessory designed to assist in the closure to the spout. It is a quick and easy way to close a spout, manually regulating the flow of product. The device locks quickly and easily, and replaces the normal tie usually sewn to a spout.

What is a diaper bottom?

A diaper bottom bulk bag is a full open bottom bulk bag that has a flap that covers over the open bottom. Once the flap is untied, the bulk bag can be discharged quickly through the open bottom.

Is the fabric breathable?

Woven polypropylene is breathable. Air and water will flow through an uncoated bulk bag. For applications that require a great deal of breathability, some users use a ventilated bulk bag.

Dapoly also have ventilation big bag for firewood, potato packing, produced by net fabric and 4 sides fabric with ventilation straps.

What is a UN Certification?

UN Certification is a testing certification done by an independent testing facility, that put the specified bulk bag through a set of rigorous tests, i.e. drop test, topple test, and tear test. A UN test can include a vibration test which will certify the bag for DOT as well.

How long is a UN Certified bulk bag certificate good for?

Usually 1 year from testing.

What are food grade big bags?

Food grade bulk bags are bags that are made with the intent of using the bulk bags in a food grade facility for the packaging of food products. Shandong Dapoly has food grade workshops to produce food grade FIBC bags.

Food and pharmaceutical grade bags

These bags are made in a clean room or fully integrated facility to avoid any chance of contamination. Inspections are performed at every stage to ensure the highest quality.
Sift proof bags
Sift proof bags,also called anti-leaking bags are produced with the addition of felt and filler cord to help prevent the loss of fine powder products through seams and potential problem areas.

Are big bags traceable?