For applications with high required forces (and therefore very high inflating pressure), Pronal offers 7 bars inflating pressure bags
Made from rubber coated fabric and vulcanized under vacuum in an autoclave, the Pronal HP bags could be inflated up to 7 bar while remaining relatively thin (18mm). The vulcanization process makes the final product homogeneous and guarantees a long lifetime. (more than 10 years in some cases)
Technical information
- UV resistance
- Ozone resistance
In option, Pronal can propose:
- FDA rubber coating
- EPDM coating
- High resistance temperature coating (up to 140°C)
- Dimensions restrictions:
- Square models : 2500 * 2500 mm
- Rectangular models : 5500 * 2500
- Circular models : Ø 2500 mm
Because of the assembly process, a “dead area” (= no inflation zone) will be located all around the bag. This dead area has to be deducted from the surface of the bag before calculation of the applicable force.
Inflation:
![gonflage vérin](http://fr.pronal-liftingbag.com/wp-content/uploads/sites/2/2014/08/3-4BD-150x150.jpg)
Threaded Inflation stems position 1/4″ ou 3/4″
![Schrader Valve](http://fr.pronal-liftingbag.com/wp-content/uploads/sites/2/2014/08/IMG_0452-150x150.jpg)
Schrader Valve
The inflation stem can be placed on the face or the edge. If on the edge, a short tube of copper with a quick connect coupler at the end will be provided; or an integrated steel insert where a stem will be mounted.
Note : The inflation stem located on the edge will increase the “dead area” dimensions.
Miscellaneous:
![Maintaining velcro for lifting bags](http://fr.pronal-liftingbag.com/wp-content/uploads/sites/2/2014/08/velcro_web-150x150.png)
Maintaining Velcro
![Threaded insert - Pronal Lifting Bags](http://fr.pronal-liftingbag.com/wp-content/uploads/sites/2/2014/08/insert_fixation_BD-150x150.jpg)
Threaded insert
![Lifting bag material protection](http://fr.pronal-liftingbag.com/wp-content/uploads/sites/2/2014/08/Surfacage_supp_externe_bd1-150x150.jpg)
Additionnal surface coating
Pronal can manufacture several bag shapes such as:
![Cubical](http://pronal-liftingbag.com/wp-content/uploads/2014/09/square-01-150x150.jpg)
Cubical
![Circular](http://pronal-liftingbag.com/wp-content/uploads/2014/09/other-Doughnut-01-150x150.jpg)
Circular
![Parallelepiped](http://pronal-liftingbag.com/wp-content/uploads/2014/09/rectangle-01-150x150.jpg)
Parallelepiped
![Cylindrical](http://pronal-liftingbag.com/wp-content/uploads/2014/09/cylindrical-01-150x150.jpg)
Cylindrical
![3D doughnut](http://pronal-liftingbag.com/wp-content/uploads/2014/09/3D-Doughnut-01-150x150.jpg)
3D doughnut
![Flat doughnut](http://pronal-liftingbag.com/wp-content/uploads/2014/09/Flat-Doughnut-01-150x150.jpg)
Flat doughnut
Max 3 stages (K1 = square 1 stage / K2 = square 2 stages/ K3 = square 3 stages …)
Other shapes upon request.
- Lifting bag tensioner
- To lift and move a load
- To maintain parts during a vulcanization process
- Tipping over a bucket
- Clamping complex shaped parts