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Double Screw Cap

A plastic screw cap with a second screw on the top allowing multiple caps to be connected forming a multi-purpose stick or tube.

Photo of Bruno Benetti
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The double screw cap allows users to build, reuse, store and dispose caps in an intelligent, practical, simple and fun way.

Each cap is composed of two screws allowing full connection between all caps to form a multi purpose stick. Additionally the top part known in classic caps may be pushed inside, still remaining attached to the cap, hence when caps are connected a tube is formed.


1) Duster and Broom Stick
2) Long Range Stick
3) Curtain Stick (shower, windows, closets)
4) Rolling Pin
5) Toys (e.g. plastic sword)
6) Plastic Structures (e.g., tents, soccer or hockey goal)
7) Hangers
8) Gym exercise stick
9) Sealing clips
10) Pillbox, needle box, picks box, salt and pepper box
11) Ice cube maker
12) Pool float line
13) Pool floating stick
14) Cord stopper and cord end
15) Cable Tubes, Pipes and Water hose
16) ...many more to come

Additionally elbows and attachments can be designed to maximize the reuse of the plastic caps to form different structures. 

Where are you / your team located?

Buenos Aires, Argentina, South America

How does this Idea redesign unrecyclable small format plastic items that often end up as waste?

The Double Screw Cap allows users to build Sticks and Tubes that can be used in many every day situations becoming a very handy element to keep at home, hence maximizing reuse and store of the plastic caps. Additionally the way in which plastic caps are connected to form a bigger plastic shape makes them convenient to recycle. Also it radically improves the plastic caps home storage experience by connecting them to form a tidy and practical shape, no more plastic bags full of loose caps.

Which use cases does your Idea apply to?

Bottle Caps.

How do you envision scaling up your Idea?

An advantage of the Double Screw Cap design is that Plastic Caps manufacturers will need to make minor adjustments to produce the cap, no new or huge investments have to be made to go forward with this idea which is overall pragmatic in terms of the current situation and possible solutions. It is very important and the main challenge for the Double Screw Cap to use the same amount of Plastic that classic Plastic Caps use nowadays and keep all of their functionalities.

At what stage of development is your Idea?

  • Prototyping: You have conducted some small tests or experiments with prospective users and will continue developing idea through these tests.

Please describe how becoming a Top Idea and working with the Think Beyond Plastics Accelerator Program will help to accelerate your solution.

Our startup company´s goal is to reduce plastic waste which is completely aligned with the New Plastics Economy Accelerator Program. Among our pillars is to generate smart, practical and pragmatic solutions from the current state of things combining technology, design, materials, biology and the wisdom of nature. The program will allow us to test and fully develop our product to generate a global impact solution, working and learning with long experienced professionals in a 360° way.

Please describe from where your Idea emerged

Team idea of our startup company.

Tell us about your work experience

Our startup company is formed by an Engineer and a Textile-Fashion designer with long experience in important companies who decided to partnership to work for the planet, the people and the future.

Please describe your legal and organizational structure



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Photo of Anthony Peyton

Well done Bruno and Magdalena on an excellent idea!

Photo of Bruno Benetti

Than you very much Anthony!

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