4V Sheet Pressing System Jason Knight & Mark Bachrach Sheet - - PowerPoint PPT Presentation

4V Sheet Pressing System

Jason Knight & Mark Bachrach

Sheet Press: Before V4 Precious Plastic Mark Jason

Designed a sheet press as part of his Masters. Designed a skateboard deck press as part of his bachelors and a small sheet press. Prototyped several sheet presses and documented lots of variations on forums.

V4 Goals

• Sheet size: 1220x1220mm
• Thickness: 5-18mm
• Quantity: 4 sheets per

day at 12MM

• Types of plastic: HDPE,

PP, optionally PS

• The machine is safe and

friendly to use

• Min cycles before small

repair: 50

• Min cycles before big

repair: 200

• Price for materials:

€4000 Goals we identifjed at the start of V4

Our Approach

Conceptual change between previous versions and this version was to begin to look at producing sheets as a system instead of a stand alone press. We began by using Marks press as a foundation and pooled the observations from the other presses in to identifying how the new system should work. New System Community Prototypes On Forums Marks Presses Precious Plastic Prototype Jasons Presses

Areas Of Improvement

• Simpler to build mould.
• Multiple moulds in the system to allow for

simultaneous heating and cooling.

• Never have to carry the full weight of the mould to

make it more user friendly.

• A custom oven to accommodate for larger moulds.
• Develop a fume extraction system.

Ventilation Roller table Press Oven

3D Modeled A System

Physical Prototype

Began Testing

Goal Status

Goal Status

Sheet size: 1220x1220mm Achieved: Producing 1310x1310 Thickness: 5-18mm Part-Achieved: So far we have made 6-12mm Quantity: 4 sheets per day at 12MM Achieved: 2 Hours per sheet with 1 hour pre heat at start

• f day

Types of plastic: HDPE, PP,

• ptionally PS

Achieved: Made multiple of each type The machine is safe and friendly to use Achieved: Added fume extraction and never have to lift more than 30Kg during

• peration

Min cycles before small repair: 50 Still in progress Min cycles before big repair 200 Still in progress Price for materials: €4000 Achieved: Estimated 3-4000 in NL

Next Steps

• Duration test system
• Refjne CAD model for oven

and press

• Dive in to insulation

types

• Changes to oven
• Insulation Types
• Fan position
• Size
• Integrate extraction
• Fully synchronize

fasteners, sheets and extrusions used across whole system

• Make a 30 day build plan
• Make fjnal BOM and order

materials

Pilot

Original Plan: Go to Morocco now to implement a Pilot Project. What happened?: Bureaucratic reasons, unable to get funding right now. New plan: Make version 4.2 here fjrst. Pilot either just before or after DDW 2019.