Beach stretcher

BEACH STRETCHER

A Project byAlexandre Calvario, Chhavi Jatwani,

Henrique Guedas, Nino Marta, Shreya Kumar

Corso di sviluppo prodottoSezione P2

A.A. 2011-2012

DocentiFrancesco Zurlo, Valentina Rognoli,

Antonio Armillotta

Politecnico di MilanoScuola del design

Corso di Sviluppo prodottoSezione P2A.A. 2011-2012

DocentiFrancesco Zurlo, Valentina Rognoli, Antonio Armillotta

Project byAlexandre Calvario, Chhavi Jatwani, Henrique Guedas, Nino Marta, Shreya Kumar

Brainstorming & scenario buildingDIE-CAST

METAL TUBE BENDING

ROTATIONAL MOLDING

METAL ALLOY

POLYMERS

RESINS

THERMOMOLDING

TECNOLOGY MATERIAL SCENARIO PRODUCT

TEMPORARY SETTLEMENT

MOTION HANDICAP

SAFETY EQUIPMENT

RESCUE EQUIPMENT RESCUE PLATFORM

STRETCHER

SPORTS KAYAK SKATE

BOARDS MULTI SPORTS

UNDERWATER SCOOTER

WHEEL CHAIRS

PROSTHESIS

HELMETPADS

CHEST HARNESS

REMOTE AREA AGRICULTURE SEED BOMBS

3RD WORLD COUNTRY(BELOW POVERTY LINE)

SCHOOL FURNITURE

SCHOOL STRUCTURE

SANITARY NEEDS

SHELTERS/TENTS





Initial ideas





Initial ideas





Beach stretcher

CONCEPTThe Beach stretcher is a design for a stretcher that is used for rescue at beaches. and near water bodies. It is also houses the Rescue ring.

TECHNOLOGYThe Rotomolding technology is used to produce hollow structures. The Beach stretcher is designed to be used in case of accidents near the water. Therefore to facilitate floating it is produced as a foam filled object using the rotomolding technology.

MATERIALThis product is made out of medium density polyethylene(MDPE) filled with polyurethane foam.PE is one the most widely used polymers in the industry. The long hydrocarbon chain structure makes it suitable for various industrial uses. In case of our product it provides a reasonable amount toughness and excellect chemical resistance. Polyurethane foam further adds strength to the design and is also the best material for flotation. The life buoy’s are filled with polyurethane foam





Scenario





Development sketches





Development sketches





Working

The stretcher fits snuggly into a grove on the base.

2. It snap fits from the top.3. The way it looks when not in use

4.The base stand when the stretcher is in use.

1.





Working

5. Just slide out the Lifebuoy from either side when required.





Ergonomic considerationsThe Rescue ring hangs at a comfortable height of 1200 mm from the ground

1.

1200 mm

Designed to contain a person with average dimensions.height 180 cm shoulders 48cm

2.

180 cm

48 cm





Ergonomic considerationsThe weight is divided between three persons.

3. The handle is designed to fit both hands if needed.

5.The distance between the two handles is 90 cm.

4.





Technical considerationsInterior or the stretcher is filled with polyurethene foam in order to make it float

2. Supports all standard sizes of the rescue ring3.All corners have a radius of 9 mm. The minimum radius for the product to leave the mold being 4.5 mm

1.

9 mm

9 mm

710 mm 620 mm 500 mm590 mm





Material studyPOLYETHYLENE

PRIMARY OBJECTIVE | Light, strong, durable, Economical to fabricate and install

SECONDARY OBJECTIVE | Non-corrosive, Weather resistant, No warping or splinters

POLYURETHANE FOAM

Expanding rigid urethane is a closed cell pourable foam. It can be poured in multiple layers.

PRIMARY OBJECTIVE | Flotation

SECONDARY OBJECTIVE | It resists the absorption of water. Used to fill voids.





Production storyboard

HEAT IS APPLYED TO THE MOULDS. IN THIS PROCESS THE PLASTIC STARTS TO MELT INSIDE THE SHAPE OF THE MOULD

MOULD A

MOULD B

MOULD A

MOULD B

MOULD A

MOULD B

MOULD A

MOULD B

The powdered form of the polyethylene Plastic is poured into the mould

The MOULD A is then closed on MOULD B tightly so that there is no outlet for the plastic matter during the Rotational process

4.A two part stretcher is build, one with a negetive and one with a positive cavaty to make the stretcher

Heat is then applied to the moulds. In this process the plastic starts to melt inside the shape of the Mould

3.2.1.






MOULD A

MOULD B

MOULD A

MOULD A

MOULD B MOULD B

After heat is applied to the moulds, they are made to Rotate on 1 or 2 differen axis’s at a certain speed. This process is referred to as ROTATIONAL MOULDING

By the time the Rotation stops the melted plastic spreads thoroughly around the walls of the entire mould. Taking the shape of the mould It is then cooled and becomes Hard Plastic.

The moulds are seperated and the product left is the shape of the moulds - The Stretcher.

FINAL STRETCHER5. 6. 7. 8.






HEAT IS APPLYED TO THE MOULDS. IN THIS PROCESS THE PLASTIC STARTS TO MELT INSIDE THE SHAPE OF THE MOULD

Stretcher after rotomoulding production with empty void - without Polyurethane.

Foam in form of liquid is poured through a hole into the hollow stretcher.

Liquid foam, takes about 5 min to expand and solidify and take the form of the hollow stretch.

Once the foam is filled up into the stretcher, its ready for use.

9. 10. 11. 12.





Technical drawingsSTRETCHER

315

1625

566

238

70

210

14

640

18531

5

800

566

33

185

41

DETAIL SCALE 1 : 5

DETAIL SCALE 1 : 5

41

41

12

11

DETAIL SCALE 1 : 5

facoltà del design

page nº

students:

date: scale:

componets:

name of project:

Calvário Alexandre; Guedes Henrique; Jatwani Chhavi; Kumar Shreya; Marta Nino

BEACH STRETCHER

StretcherCorso di Sviluppo ProdottoSezioni P22011-2012

Prof: Francesco Zurlo, Valentina Rognoli, Antonio Armillotta 02/07/2012 1:10

01





Technical drawingsLIFE BOUY STAND

39

177

7868

500

20

700

310

445

30

170

63

134

37

310

555

10

90

DETAIL SCALE 1 : 5

40

DETAIL SCALE 1 : 5

facoltà del design

page nº

students:

date: scale:

componets:

name of project:

Calvário Alexandre; Guedes Henrique; Jatwani Chhavi; Kumar Shreya; Marta Nino

BEACH STRETCHER

BaseCorso di Sviluppo ProdottoSezioni P22011-2012

Prof: Francesco Zurlo, Valentina Rognoli, Antonio Armillotta 02/07/2012 1:10

02





Renderings





Renderings

Montage





THANK YOUfor your attention.

Business

Beach stretcher