英文介紹

FIBCs (Flexible  Intermediate Bulk Containers)　　1.　綜述

 FIBCs is called Flexible Intermediate Bulk Containers, also  known as “big bags”, “bulk sacks”, 
having body made of flexible polypropylene  woven fabric. 
 They  are first manufactured in the late 1950s or early 1960s in America, Europe and Japan. 
The first FIBCs were  constructed with heavy-duty PVC-coated polyester fabric and the initial cost of  
these heavy-duty PVC containers is extremely high. They are mainly used for  multi-trip in rubber industry 
with average loading capacity of 2 metric ton per  bag. Flexible Intermediate Bulk Containers manufactured
 with polyolefin fabrics  were experimented in England,  Japan, Canada, and the United States at about the 
same 
 time in the late 1960s to the early 1970s. It was the development of these  high-strength light weight 
fabrics 
(i.e., polypropylene) and the specialized  weaving technology that spurred the growth of the Flexible 
Intermediate 
Bulk  Containers that are universally used today. 
 They  have the following characteristics:

Cannot be handled manually when filled. FIBCs make it possible for operators to move large quantities of material easily and efficiently around the working area by using hoists or forklifts.
Is intended for shipment of solid material in powder, flake, or granular form, convenient for transportation and storage.
Does not require further packaging. The cost of FIBCs is competitive with other forms of packaging as it is usually utilized without pallets.
It can be folded flat and bailed for shipment to the user. It can also be folded and thus take up little storage space in the working area after their contents have been discharged. The weight of a bulk bag used to ship one metric ton of product weighs only 3.5-4.5kgs, offering a low package product weight ratio. So it is easy for handling and cost-effective.
FIBCs can be manufactured to meet specific requirements of the end- users. The height of the container, the diameter and length of the spouts, coated or uncoated fabric, and whether a polypropylene liner is necessary will be specified according to the type of product that will be shipped. It is user-friendly.

Generally, FIBCs is the ideal economical and durable packaging material, which have been widely used in various industries such as chemicals, minerals, construction, plastics, agriculture, food and pharmaceuticals, etc.
FIBCs – Dimensions　　　2.尺寸規格

Polypropylene Fabric Data

Weight from 70gr/sqm to 300gr/sqm
Weave from 8x8 tapes/inch to 22x22 tapes/inch
Denier from 700D to 2600D
UV stabilization: Up to 200 KLY
Tensile: Up to 3200N/5cm
Coating: 25gr-35gr/sqm
Color: Optional

Sizing of the FIBCs
When selecting the size fo an FIBC, the following criteria must be considered:

The weight of the product in the FIBC and its tamped bulk density.
The internal dimensions of the shipping container or road vehicle into which the filled FIBC to be placed
The net filled height of the FIBCs after filling

Bag height is max twice diameter of the bag bottom. Any sizing questions, please contact us and we will design exactly the FIBC your require.

Volume and Usual Dimensions(cm)

FIBCs - Lifting Styles　　　　　3.吊帶款式

Circular Woven with 4 Cross-corner Rigid Loops
		Circular PP woven fabric for square base type: from 70x70cm to 100x100cm Circular PP woven fabric for circular base type: from Φ90cm to Φ120cm Standard SWL from 500kg to 1500kg at SF 6:1 or 2000kg at SF 5:1 Rolled sewing at bottom for reduced sifting Lift loops can be made from fibrillated webbing for rigidity and ease of lifting

U-panel with 4 Standard CornerRigid Loops
		It's the most popular FIBC shape for large capacity Loops are sewn with or into vertical seams Standard SWL from 500kg to 2000kg at SF 5:1 or Sewing method: chain stitching, overlock stitching+safety stitching

Four Panel with Internal Baffles
		Internal baffles are adopted to provide tautness so to avoid round out on filling Baffle bag store25-30% more product in a given space Baffle construction offers maximum stability and better stackability Suitable packaging for low density products

Single or Double Lift Point Bags
		single or double lift point bags, using the body fabric of the bag as the lift. Economical packaging for low cost commodities such as cement,fertilizer,salt, etc. Designed for central point lift and it's user friendly

Sleeve Lifts
	Sleeve lift using the body fabric for forklift handling, no need of lift webbing Sleeve lift is economical, but strong enough for single or multi-trip applications Sleeve lift is mainly used for fertilizer industry

Special Lift Choices

Stevedore Loops-A	Stevedore Loops-B	Extra Loops

Loop in Loop	Lower Loops	Fully Belted Bottom

Lifting Loops choices:

Diverse types of lift loops are available for choice according to color, material, and function requirements. The standard lift loop colors include white, black, red, green, blue, yellow. Rigid PP loops and soft polyester loops are also can be made at customer's request. The standard width are 2",3" 4" .

FIBCs – Filling　　　　　　　4.進料口款式

Open Top
	For construction materials such as stones or sand e.g. which need no extraordinary protection Easy filling for manual filling or big filling materials

Filling Slot
	Top lid with a slot to allow a filling tube insertion into the bag No closing or tie on top Ideal for bags with inner-liners

Filling Skirt
	Easy filling for manual filling or big filling materials Filling skirt provide further protection for filling materials by closing with ties

Filling Spout
	Most popular filling option Standard dimension: Ø 36 x 46cm (height) Special dimensions on request Extra inner ties possible for binding of liner

Conical Top
	Most popular filling option Standard dimension: Ø 36 x 46cm (height) Special dimensions on request Extra inner ties possible for binding of liner

Capuchon Skirt
		Draw string closed top Round piece remains inside to close round hole in the middle
	Capuchon Spout(Pajamas Style)
			External draw string protect internal spout Easy closing by draw string Top flap after filling

FIBCs – Discharging　　　　5.下料口款式

Flat Bottom
	Usually for single use only cut open manually or by a discharging apparatus or set on an FIBC-discharge equipment

Discharging Spout
			For single or multi-trip bag Single or double layer (dust-free） Usually swan-neck tied with ties or B-lock Standard dimension:Ø 35 x 50cm (height)
	Flat Bottom
		Sewn 1 side and attached at opposite side with velcro, ties or straps fastened with buckles Coated fabric for protection against moisture or dust, epecially for hygiene bags

Capuchon Spout ( Pajamas Style)
			Using coated fabric to protect from dirt Inner spout with ties Outer part with funnel for tie-string closing Exactly flat base after closing and when filled
	Petal Closure ( Star Closure)
		Most popular discharging spout Standard dimension: Ø 36 x 46cm (height) Special dimensions on request Exactly flat base after closing and when filled
	Conical Base
		Making discharging easy for semi-bulk products, for discharging devices without vibriation or purser installations
	Discharging Skirt
		Four side flaps with ties to ensure safe closing Usually for multi-trip bags, ensure full opening bottom when discharging
	Full Open Bottom
		Quick discharge, ensure full opening bottom when discharging
	Side Discharge
		Eliminates manual lifting and improves ergonomics Suit for semi-bulk material with poor flowing characteristics

FIBCs – Sewing　　　　　　6.縫制

There are different kinds of sewing methods available for FIBCs making, including parallel stitching, Over-lock stitching, chain stitching.
For fine powder products, bag seams can also be sewn with different sewing methods for dust proofing.It will prevent material leakage and contamination. According to the fineness of the contents and anti-sift requirements, different anti-sift materials are available for choice, such as filler cord, felt, and polyester straps.

FIBCs – Marking　　　　　　7.標嘜

Document Pouch
		Standard: LDPE, Transparent, Zip closure, 3-4 mil thickness Available in a wide variety of sizes Can be attached on various places of the bag

Printing
		Information such as Company Logo, Commodity Name and Contents, Warnings, etc can be displayed. Any colors are possible according to Pantone standard Color Card Print options: 1 side / 1 color; 2 colors, 3 colors, 4 colors 2 side / 1 color; 2 colors, 3 colors, 4 colors 3 side / 1 color; 2 colors, 3 colors, 4 colors 4 side / 1 color; 2 colors, 3 colors, 4 colors

Label
Durable label with printing can be attached to the FIBCs body permanently to ensure the safety of the user. It clearly provides information of technical data including safety working load, safety factor and whether it is single-trip or multi-trip, etc. It also has proper drawings of recommended handling methods as well as complete information about FIBCs standards.

FIBCs – Liner　8.內袋

LLDPE/LDPE liner are available to prevent the incursion of moisture, these liners can be loose inserted, sewn in or glued to all kinds of outer bags. Liners can be make in different shapes to be fixed inside of outer bags. Full open top with sealed bottom Fill spout with sealed bottom Fill spout with cubic bottom Fill spout / Discharging spout ( can be made cone shaped) Sewn in methods including: Sewn tab: Reinforcement tape tabs attached to the liner are sewn into the corner seams of outer bag. The tabs position the liner during filling and discharging of products. Sewn flange: Extended flanges of the form-fit liner are sewn between the panels of top and side, bottom and side.

Gusseted Open Top	Fill Spout/ Sealed Bottom	Fill Spout/ Cubic Bottom	Fill Spout / Discharge Spout

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Document Pouch