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Contests / Tamper Evident Closure Design / Brief

Contest detail page.

What should i do now?

  • Read the brief
  • Download the material files (if available)
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CONTEST TYPOLOGY: SINGLE - PRODUCT DESIGN (What’s this?)

  • upload phase
  • community vote
  • client choices

 

 
 
upload phase
131 days left

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BRIEF


Summary

A leading company, in collaboration with Desall, is looking for an innovative cap for the personal care, cosmetics, and food sectors, specifically designed for e-commerce sales. The cap must ensure shock resistance during transport while also providing an easy and intuitive opening experience for the user.

• This company has launched other contests! To learn more, visit this page.


Company description

This project is sponsored by a leading company which has currently chosen to keep its brand anonymous.

Resources
The brief is available in the following languages:
- English
- Italian
Download the Material files.

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What we are looking for

We are looking for innovative concepts for a new single-component cap intended for the personal care, cosmetics, and food sectors. The cap should stand out from current market solutions in terms of usability, user experience, and functionality. The cap must incorporate a safety system capable of visibly indicating whether it has been opened for the first time or tampered with, through a component that must be removed, broken, or altered in shape in a way that cannot be reversed. This system is used on products that, once opened, may be subject to alteration or are of high value, thereby protecting consumers from unsafe or tampered products.
The goal is to develop an innovative closure that meets market needs, reduces plastic usage, and simplifies existing solutions.


Types of Tamper-Evident Closures

Traditional plastic bottle closures present several issues when used in the e-commerce sector:

- Induction Seals: An induction seal is a disc applied to the neck of the bottle, typically tamper-evident because it is sealed to the container using heat. If the seal is altered, the tampering is immediately visible.
- Shrink Bands: A shrink band fits tightly around the neck of the container or the cap. When the container is opened, the band will show signs of damage or removal.
- Breakable Seals: These closures feature a seal that breaks when the cap is removed. The plastic ring or band may detach or show visible damage after opening.

Common Market Concepts and Their Pros & Cons

There are various tamper evident closure solutions, each with its own advantages and disadvantages:

Screw Caps with Safety Bands
The most commonly used system to seal bottles and ensure product integrity. The consumer removes the band on first use, making any tampering evident.
Pros: Easy to produce via injection molding; highly reliable for tamper evidence; compatible with various bottle formats.
Cons: The safety band is often a separate waste component; higher plastic consumption; may be difficult to open for some users.

Snap-On Closures with Retaining Ring
A ring remains attached to the bottle neck after the first opening.
Pros: Good ergonomics; effective sealing and clear visual evidence of tampering.
Cons: Risk of environmental dispersion of the ring; more complex molding and assembly process.

Closures with Heat or Induction Seals
An aluminum or plastic seal covers the neck and is removed upon first use.
Pros: Higher protection in terms of safety and product preservation; less plastic used compared to traditional closures.
Cons: Requires sealing machinery; not always clearly recognizable as tamper-evident; may be hard to remove for some users.

To explore some of the solutions already available on the market, please refer to the Material files available for download on the contest page.


Guidelines

To ensure the proper development of your projects, carefully consider the following guidelines:

Project type
You are invited to propose a concept for a tamper-evident cap, reclosable and preferably single-component, that stands out for its usability, user experience, and functionality. The solution should engage and attract consumers through a multisensory approach or, alternatively, through innovative features that enhance the overall user experience.

To develop an effective and innovative tamper evident closure, the project should follow these key principles:
- Compatibility: The cap should preferably be compatible with threaded bottle necks and/or press-fit necks.
- Plastic reduction: Minimize non-essential components and optimize the design by reducing thickness without compromising functionality.
- Simplified design: Avoid complex structures that increase costs and make the product harder to use. Develop a system that highlights tampering without completely separating the components.
- Ease of recycling: Use a single component or easily separable parts to improve sustainability.
- Customization: Possibility to add a logo or the customer’s brand name.
- Airtight seal: The cap must ensure an airtight closure.

Style and aesthetic
You are invited to design a cap with strong aesthetic value and attention to detail, capable of establishing a new stylistic language that sets it apart from current market offerings. However, the cap’s design should not feature overly distinctive or brand-specific elements, as it needs to adapt well to containers of various shapes and styles, depending on the brand using the specific bottle.

Colors
You are free to propose new color solutions, either through monochromatic or multicolored caps, with the option to use one or more materials.

Production technologies and materials
The cap must be manufactured using industrial production technologies, specifically injection molding. The most suitable materials for this context are polypropylene and polyethylene, with the option to create either mono-material or bi-material caps using the same molding cycle. At your discretion, you may also propose bi-injected solutions using thermoplastic materials or soft components, provided they offer a significant advantage in terms of user experience or functionality. Ideally, the new cap should be single-component.

Surface finishes
If included in your design concept, you may suggest the use of surface finishes created through mold processing (post-processing treatments are not allowed).

Dimensions
The cap must be compatible with bottles of various sizes, with standard neck diameters of 24, 28, and 38 mm. For the purposes of the contest, you are required to present at least the solution for the 24 mm neck. The liquid exit hole can have an indicative diameter ranging from 2,5 to 7 mm.

Weight
The cap must be as lightweight as possible, both to meet transportability requirements and to reduce environmental impact, through the lower use of plastic materials.

Values to Communicate
The cap you propose should be perceived as a unique, innovative product, ideally developed with a focus on environmental sustainability. Usability and user experience are of utmost importance, ensuring the product is considered reliable in every aspect, including during transport.

Target
The cap will be used across a wide range of products in the food, cosmetics, and personal care sectors, intended for both mass distribution and specialized retailers. Therefore, consider a broad and diverse audience, aiming to offer a solution that is intuitive and suitable for all types of consumers.

Submission materials
Provide detailed descriptions and up to 5 images to effectively present your projects. Images should be in 4:3 format, with .jpg, .gif or .png file formats acceptable. The colour mode should be RGB and the maximum size of a single file should be 1 MB.
You’re invited to use the designated field on the submission page to attach a .zip file containing 3D files and high-resolution versions of the project images. The maximum file size for the .zip archive is 100MB.

Judging criteria
When evaluating the submissions, the Sponsor will consider the following criteria:
Degree of innovation 5/5
Aesthetic quality 5/5
Functionality/Usability 5/5
Eco-friendliness 4/5
Economic sustainability 4/5

Contest timeline
Add the contest to your calendar

Upload phase: 24 June 2025 – 27 November 2025 (1.59 PM UTC)
Concept review: 24 July 2025 (1.59 PM UTC)
Client vote: from 27 November 2025
Winner announcement: approximately by the end of February 2025

Concept review (optional)
Participants have the opportunity to request an optional review of their project by the Desall team by the date indicated above. To do so, they must 1) save their project as a draft from the upload page and 2) send a request to the Desall team via email at contest@desall.com or through the contact form. This review is entirely optional and only provides an opportunity for participants to receive feedback but does not constitute a necessary condition for participation or provide any advantage in the final evaluation by the Sponsor.

Eligibility and submission
Participation is free and open to creative talents of any nationality aged 18 or older. Participants may submit one or more projects, but only projects published on the website www.desall.com from the upload page dedicated to the contest will be accepted.

Award
1°: €5000
The selection of the winner by the Sponsor will be the result of an unquestionable evaluation and it will take into account originality, feasibility and consistency of submitted projects with the presented brief.

Extra Award (option right fee)
€2000
Throughout the duration of the option right, the Sponsor offers an additional opportunity to all participants by setting the compensation of €2000 for the purchase of the licence for the economic exploitation of projects not recognized as winning proposals.

For more information, please login and read the Contest Agreement from the upload page. For questions about the brief please use the “Have a question” button or write to contest@desall.com


Language

Since we are an international Community, all texts provided with your uploads (abstract, description, tags, etc.) should be written in English.


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Desall required files

Minimum 1 image, up to 5.
Recommended dimensions: 960 x 720px (player size) ; allowed format: .jpg , .gif , .png; color mode: RGB;
allowed resolution: 72 dpi ; max file (for each one) size: 1 mb.


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