High Pressure Barge Launching Airbags , Marine Salvage Air Lift Bags 2.5M

Comparison with other Launch Way

Rollers Bag is a innovative ship launching technology, comparing with "end-on launching", "side ship launching", "float-out". This ship launching technology overcomes the restrictions of fixed launching track of side-launch. Ship launching airbags are accepted by more and more shipyards world wide due to its advantages of saving time, saving investment, flexible, safety. The biggest vessel launched by ship launching airbags up to 100,000 DWT.

Material of Marine Rubber Balloon

Inflatable Marine Airbags are to be constructed of an out rubber layer, multilayer heavy-duty synthetic-tire-cord layers, and an inner rubber layer vulcanized firmly. Ship launching marine airbags are cylindrical balloon body, with two conical head and end mouth. Air tightness swivel and air inlet kits are screwed with end mouth. Refer below picture.

2. AIRBAG STRUCTURE & MATERIAL REQUIREMENTS
2.1 Airbag Structure
"XINCHENG" Marine Rubber Airbags' structure is consists of the outer rubber layer synthetic cord reinforced rubber layers and inner rubber layer.
Its shape characteristics: central body cylindrical + tapered on both ends.
Cord layers: 4,5,6,7,8,9,10, layers
Accessories: Pressure gage, Inlet valve, Pipe fitting and seal end ring.

2.2 Material

1. Choose the best quality of imported natural rubber, such as smoked sheet rubber and 3L natural rubber from Thailand and Malaysia, which has good elasticity, ageing resistance, and will not take off layer. Meanwhile, During the process of produce rubber, we using efficient stabilizer to make rubber more environmentally friendly and no cracks.

   No	Test item		Required value	Test method
   1	Tensile strength,MPa		≥18	ISO 37
   2	Elongation at break, %		≥400	ISO 37
   3	Hardness, °(Shore A)		60±10	ISO 7619-1
   4	Tear Strength, N/cm		≥400	ISO 34-1
   5	Compression set, %(70ºC±1ºC, 22h)		≤30	ISO 815-1
   6	After thermal ageing at 70ºC±1ºC, 96h	Holding of pull lengthening, %	≥80	ISO 188
   7		Holding of elongation at break, %	≥80	ISO 188
   8		Change of hardness,°(Shore A)	≤8	ISO 7619-1
   9	Static ozone aging test at 40ºCx96h [ozone concentration(50±5)x10-8],extension 20%		No crack	ISO 1431-1

   2) Our marine rubber airbags' material using three strands synthetic-tyre-cords whose tensile strength can be 31 KG, which make our airbags more higher bearing capacity and safety.
   

1. Wrap threads that run vertically through the synthetic tyre-cord pattern.
2. Weft threads that run perpendicular to the warp threads.

NOTE: Other size of airbags are also available follow customer's request.