Project No DripProject No DripPrototype PresentationPrototype Presentation

Jacqueline Greene Jacqueline Greene

Michele DufallaMichele Dufalla

Tania ChanTania Chan

April 5, 2007April 5, 2007

Initial Design SchematicInitial Design Schematic

H2O container

Containerwall

Inside container

cork Clamp with attached rubber plug

New GoalNew Goal

http://www1.istockphoto.com/file_thumbview_approve/1168596/2/istockphoto_1168596_plastic_can_container.jpg, http://www.baproducts.com/spigot.jpg

+

Plastic ContainersPlastic Containersfrom: http://www.singaplastics.com/images/JerricanFullShotJ.jpgfrom: http://www.singaplastics.com/images/JerricanFullShotJ.jpg

Hot Plate WeldingHot Plate Welding(from Joining of Plastics by Jordan Rotheiser (2(from Joining of Plastics by Jordan Rotheiser (2ndnd ed.) ed.)

MethodMethod

http://www.cooking.com/images/products/shprodde/743196.jpg, http://www.flagstaff.az.gov/images/pages/SC581/plastic%20bag.JPG

Plastic Welding Plastic Welding ApplicationsApplications

Thermoware, Toys and GamesThermoware, Toys and Games

Files, Folders, Writing instrumentsFiles, Folders, Writing instruments

Automobiles filters, floats, batteries, clutch cables, reflectorsAutomobiles filters, floats, batteries, clutch cables, reflectors

Pump Housing and ImpellersPump Housing and Impellers

Electrical switches and switchgears, connectors, steam iron Electrical switches and switchgears, connectors, steam iron jackets,energy metersjackets,energy meters

Surgical masks, Drip ChambersSurgical masks, Drip Chambers

Computer Floppies, Printer RibbonsComputer Floppies, Printer Ribbons

Watches, Novelty and Gift itemsWatches, Novelty and Gift items

Audio and Video Cassettes Audio and Video Cassettes

From: http://www.rooptelsonic.com/plasticweldapplication.htmlFrom: http://www.rooptelsonic.com/plasticweldapplication.html

Sample PreparationSample Preparation

1.1. Hot Plate- insufficient heat to weld Hot Plate- insufficient heat to weld plastics together without melting & plastics together without melting & warping exterior layers, variable warping exterior layers, variable temperaturetemperature

2.2. Oven- insufficient heat to weld plastics Oven- insufficient heat to weld plastics together, variable temperaturetogether, variable temperature

3.3. Iron- variable temperature but only Iron- variable temperature but only manner that works- needed a movable manner that works- needed a movable heat source to join plastics together, heat source to join plastics together, measured temperature with a measured temperature with a thermocouplethermocouple

Shear TestShear Test1/8” HDPE

1/8” HDPE

4 layers of clear LDPE film (0.0006”) 3x1 in contact

area

Black opaque vs clear Black opaque vs clear LDPELDPE

Low-Density Polyethylene (LDPE)Plain BackFilm Thickness .006"Thickness Tolerance ±.0006"Length 25'Length Tolerance ±12"Width 6'Width Tolerance±4"Film Type :Tear ResistantFilm Application: Window Coverings and Vapor Barriers and Construction FilmOpaque BlackOperating Temperature Range: -75° to +160° FSoftening Point:180° FPerformance Characteristic: Weather ResistantTensile Strength:1700 psi, (machine direction); 1200 psi, (traverse direction)

Low-Density Polyethylene (LDPE)Film Thickness.006"Thickness Tolerance .0012"Length 25'Length Tolerance1/2"Width10'Width Tolerance1/8"Film Type Multipurpose (Visqueen)Film Application:Window Coverings and Vapor Barriers and Construction FilmTranslucent with White TintOperating Temperature Range: -60° to +150° F

Shear Max stress vs. Temperature of Formation, clear LDPE

0

10

20

30

40

50

100 110 120 130 140 150 160 170 180 190 200

Temperature (deg C)

Stre

ss a

t pea

k (M

Pa)

Shear Max Stress vs. Temperature of Formation, black LDPE

0

10

20

30

40

50

60

100 110 120 130 140 150 160 170 180

Temperature (deg C)

Shea

r Stre

ss M

Pa

Water pressure Water pressure testing:testing:

ApparatusApparatus•Test the water sealing properties of the LDPE “glue”

•Test the strength of the LDPE “glue”

Water pressure Water pressure testing:testing:

Experimental Experimental setupsetup

Water pressure Water pressure testing:testing:ResultsResultsBase PlasticBase Plastic Layer of LDPE Layer of LDPE

Film “Glue”Film “Glue”ResultsResults

HDPEHDPE 44 Up to 50psi for Up to 50psi for 5 mins5 mins

LDPELDPE 44 Up to 50psi for Up to 50psi for 5 mins5 mins

HDPEHDPE 22 Leakage Leakage without without pressurepressure

LDPELDPE 00 Leakage Leakage without without pressurepressure

Higher water pressureHigher water pressure Force of 40 gallons of water: 392NForce of 40 gallons of water: 392N

Pressure of 40 gallons of water on a 5/8” diameter Pressure of 40 gallons of water on a 5/8” diameter tube: tube: 2MPA ≈ 300psi2MPA ≈ 300psi

Longer pressure testsLonger pressure tests Can the seal withstand days of pressure?Can the seal withstand days of pressure?

Effects of chlorine and impurities in the water on Effects of chlorine and impurities in the water on the sealthe seal Chlorination in the clean water systemChlorination in the clean water system Dirt and sand in the waterDirt and sand in the water

Next Steps in Next Steps in Water pressure Water pressure

testingtesting

Next StepsNext Steps

Use plastic bags to weld together Use plastic bags to weld together HDPE HDPE

Quantify with Instron Shear and Peel Quantify with Instron Shear and Peel teststests

Obtain more data points for Obtain more data points for temperature series?temperature series?

Portable LDPE ring mold for tap Portable LDPE ring mold for tap attachment…attachment…

Gantt ChartGantt Chart2/5/2003 2/15/2003 2/25/2003 3/7/2003 3/17/2003 3/27/2003 4/6/2003 4/16/2003 4/26/2003 5/6/2003 5/16/2003

Background Research

Recycling

Processing Cost

Material Cost

Target User

Materials Economic Analysis

Polyethylene Properties Research

Polyethylene Recycling Research

Plastic Welding Testings

90 Degree Peel Tests

Shear Tests

Production of Prototype #1

Forming Plastic Rings from Recycled Polyethylene

Testing Plastic Welding Adhesion using plastic bags

Production of Final Product

Increase Efficiency and Decrease Cost of Production

Troubleshoot Defects in Final Product

Preparation for Final Presentation

Completed Remaining