Rotomolding and its industrial significance

What is rotational molding?

Rotational molding is a manufacturing process used for processing inter alia Polyethylene or Polypropylene in plastic products. Examples are products like buoys, water and/or fuel tanks, toys, traffic guidance, fenders etc. Polycon Bahrain caters to all your rotomolding needs.

How does the rotational molding process works?

Theprocess of rotational molding consists of four main phases. It usually starts with filling the mold with powdered resin. The inside of this mold is the negative of the final product. the molds are specifically developed for each customer because each product is different.

After melting of the powder, and after formation of it around the walls, the mold’s cooling process can be initialized.

The cooling usually takes place in the subsequent phase in which huge fans blow air through the mold walls. When the product is solidified enough, it needs to be removed from the mold and the rotational molding process shall be completed,and there is now a produced plastic product.

What are the advantages of rotational molding?

The rotational moldingprocess usually has tremendous advantages in which nearly every plastic products partially or fully closed, can be produced. This is done with the highest possible tangibility and atefficiently low costs-

·         High level of flexibility and freedom in design

·         Low investment costs compared to vacuum molding or blow molding.

·         Batch sizes starting at 100 units per year.

Tolerances are harder to hold than regular injection molding. Surface finishes are not as good. There will be plenty of flashes that may need to be trimmed. Roto-molded parts are usually thick and hollow.

You'd probably want to texture the mold (shot blast or sand blast would be cheapest). The crisp corners on the ends wouldn't come out well either (they'd probably load from an end). The molder would probably run a 1/4 round router along it to get rid of flash. And you'd also need a breather hole in it somewhere. So it wouldn't be 100% enclosed.

ABS would be a good material to use. If you can't extrude then I'd look at Vacuum Forming the whole thing in parts and fabricating together.

Polycon Bahrain provides rotomolding solutions for industrial needs. Check them out at http://www.polyconbahrain.com/

Road Barriers

Nowadays, with lots of cars, motorcycles or others vehicles on the road, there is always a chance of having an accident. With a person loses a bit of concentration, it may happen that she/ he suffers fatal accidents. Hence, several rules, regulations are put by government or civic authorities make the journey of people safe on the  road. Thus, road barriers are put on road to keep vehicles on path unrestricted by any physical barriers or separation to move laterally. It prevents them from colliding with dangerous obstacles such as boulders, sign supports, trees etc. or from traversing steep slopes or entering deep water.

Installation:- road barriers are installed within a median of high ways divided to prevent errant vehicles to enter opposite lane. It is also installed on the bridge ends, near steep slopes from roadway limits, at drainage crossings where steep or vertical drops or present or near places where large signs/illumination poles stand.

Types of barriers:- road barriers can be categorised on the basis of their functions and the deflection that they can put when a vehicle crashes into them.

Barrier function:- it is used to protect traffic from roadside  obstacles or hazards such as sloop steep enough to tip your vehicle over onto its side or roof, fixed objects like bridge pillars and bodies of water.

1. Median barriers- it prevents vehicle to cross over a median and strike a vehicle coming from opposite lawn.
2. Bridge barriers- it prevents the vehicle from tipping over the side of a bridge and falling onto railroad or roadway below.
3. Work zone barriers- it is used to protect traffic from hazards in work zone. Temporary concrete barriers and water filled barriers are types of work zone barriers.

Barrier stiffness:- traffic barriers undergo intensive crash testing before they are approved for general use to make sure barriers are safe.

1. Flexible barriers- it includes cable barriers and post corrugated guide rail systems.
2. Semi-rigid barriers- it is equipped with patented absorbtionlink anchoring technology and includes box beam guide rail, heavy post blocked out corrugate guide rail and three- beam guide rails.
3. Rigid barriers- it is made of reinforced concrete.

Polyconbahrain is one of the leading company providing top quality road barriers. You can order these road barriers by going on company's website- http://www.polyconbahrain.com/