ISO 14409 Certificated High Strength Rubber Material Marine Ship
Launching Airbags
Product Description
Ship launching airbags are specialized marine rubber air bags that
are used for launching marine vessels. ship landing or haul-outs.
Marine rubber airbags are also widely used in loading, floating, lifting and moving sunken ships,
and salvaging stranded boats. Rubber airbags are made of heavy-duty synthetic-tire-cord layers with inner and out
rubber layers in a long cylindrical balloon shape.
Ship launching or upgrading using marine airbags is an innovative
ship-launching technology. It overcomes the disadvantage of “end-on
launching”, “side ship launching”, and “float-out”. This
ship-launching technology overcomes the restrictions of the fixed
launching track of side-launch.
This flexible ship launching technology is accepted by more
shipyards worldwide because of its advantages of saving time,
investment, flexibility, and safety. We are constantly innovating
in terms of design, material usage, & manufacturing technologies
throughout the years to ensure flexibility, safety, and
reliability.
All Doowin Marine ship launching airbags are manufactured and
tested fully compliant with ISO 14409:2011 Ships and marine technology — Ship launching airbags.
Product Specifications
| Product Name | ISO 14409 Certificated High Strength Rubber Material Marine Ship
Launching Airbags |
| Diameter(D) | 0.5m ~ 3m, or customized diameter |
| Effective Length(EL) | 1m~32m, or customized length |
| Total Length(TL) | 1.2m~35m, or customized length |
| Loading Capacity | 10 ~ 40 ton/m, or customized capacity |
| Product Technology | Holistic wrapping technology |
| Standard | ISO 14409 |
| Working Pressure | 7-500KPA |
| Lifespan | 10 years |
| Material | Synthetic-tire-cord layer |
| Certificate | SGS, BV, CCS, ABS, LR, BV |
| Layers | 4~12 layers |
Material
Rubber airbags are constructed of an out rubber layer, multi-layer
synthetic-tire-cord layers, and inner rubber layer vulcanized
firmly. More layers are applied at the end shoulders.
Synthetic-tire-cord layer
Synthetic-tire-cord layer is reinforcement layer of the ship
launching airbags which are made of rubber coated
synthetic-tire-cord fabrics. Many synthetic-tire cord layers are
twined at ideal angles by unique and patented "Holistic Wrapping
Technology". To hold the internal pressure and to distribute the
stress evenly. We use the 1400 dtex/2 or 1400 dtex/3 type
synthetic-tire-cord fabric. The warp is over 95 cords per 100 mm in
width. The breaking strength is more than 310 N per cords.
Inner and Outer Rubber
Prior to the air bag production, the outer and inner rubber layers
shall be tested to meet the criteria in accordance with the test
methods given in the International Standards listed below. The
outer rubber layer covers the outside of ship launching airbags. To
protects the cord layers from abrasion and other external forces.
This compound has sufficient tensile and tear strength to withstand
any weather condition and hard usage.
Ship Launching Airbags Rubber Material Performance
| No | Test Item | Value | Standard |
| 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, % (70℃±1℃,22h) | ≤30 | ISO 815-1 |
| 6 | 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 at 40℃ x 96h, extension 20% | No crack | ISO 1431-1 |
Ship Launching Airbag Performance
| Type No. | Diameter
(m) | Initial Internal Pressure for Test(kPa) | Rated Working Pressure(kPa) | Bearing Capacity at 70% compress deformation(KN/m) | Minimum Burst Pressure(kPa) |
| QP5 | 0.8 | 48 | 210 | 184 | 630 |
| 1 | 35 | 170 | 186 | 510 |
| 1.2 | 28 | 140 | 185 | 420 |
| 1.5 | 20 | 110 | 181 | 330 |
| 1.8 | 16 | 90 | 178 | 270 |
| 2 | 14 | 80 | 176 | 240 |
| QP6 | 0.8 | 56 | 245 | 215 | 740 |
| 1 | 45 | 200 | 219 | 600 |
| 1.2 | 32 | 165 | 217 | 490 |
| 1.5 | 25 | 130 | 218 | 390 |
| 1.8 | 20 | 110 | 220 | 330 |
| 2 | 18 | 100 | 220 | 300 |
| QP7 | 0.8 | 64 | 270 | 237 | 810 |
| 1 | 50 | 220 | 242 | 660 |
| 1.2 | 38 | 190 | 251 | 570 |
| 1.5 | 29 | 150 | 247 | 450 |
| 1.8 | 25 | 130 | 257 | 390 |
| 2 | 23 | 120 | 264 | 360 |
| QP8 | 0.8 | 70 | 300 | 264 | 900 |
| 1 | 54 | 240 | 264 | 720 |
| 1.2 | 45 | 210 | 277 | 630 |
| 1.5 | 32 | 170 | 280 | 510 |
| 1.8 | 29 | 150 | 297 | 450 |
| 2 | 26 | 140 | 308 | 420 |
