To understand the basic properties and principals of the Liquid Lens Doming™ process we have listed some of the most frequently asked questions below.

Q: How do I calculate the amount of material required?
A: The standard calculation used is based on 1ml of resin covers a surface area of a decal measuring approximately 25 x 25mm. For example a decal measuring 75 x 25mm would typically consume 3ml of material.

 

Q: How high can the dome be?
A: Depending on the shape, size and surface finish of the decal it is possible to dome very high (3mm) or very low (1mm).

 

Q: What are the key features?
A: There are many significant features and benefits to Liquid Lens™ Doming such as:

  • It works well with most print processes, especially ink jet
  • Liquid Lens Technology allows you to dome high or low and is true glass clear
  • It has excellent flow characteristics and contact angles
  • It will not yellow and will protect surfaces exposed to severe weathering
  • Cure times have been greatly reduced allowing products to be delivered quicker
  • The formulation is hydrophobic and actively repels moisture
  • Our 50ml, 200ml and 400ml cartridges can be part used and re-sealed
  • We guarantee 12 months shelf life on sealed cartridge packs
  • The process is very reliable keeping wastage to a minimum
  • There are important Health & Safety benefits for your Operators

 

Q: What is the curing time?
A: At optimum room temperature and humidity (21°C @ 35% RH) the full cure time of the material is 24 hours. The initial gel time is a fast 45 minutes. In some cases the domed decals can be removed and applied before full cure has taken place, after around 4 hours inside a Liquid Lens™ Quality Control Unit and 2 hours in a Liquid Lens™ Curing Oven at 30°C.

 

Q: What is Liquid Lens Resin?
A: Liquid Lens™ resin is a high quality 2 part 1:1 ratio polyurethane resin for doming applications developed exclusively for Liquid Lens Europe Ltd

The Liquid Lens Doming™ process can be applied to many different non-porous materials to produce a high value 3D glass clear dome. Supplied in either manually applied cartridge systems or for use with a semi-automated machine.

 

Q: What shapes and sizes can I apply the Resin to?
A: Liquid Lens Doming™ can dome virtually any shape and size providing there are no sharp corners, which can be time consuming to apply. Circles, ovals, squares and rectangles with rounded corners are ideal shapes for the process. Once the correct volume of resin has been determined for a particular size decal it can normally be applied in one shot by manual or automated dispensing machines and will flow to the edge and stop.

 

Q: What type of materials can I use?
A: The doming process can be applied to many different Non-Porous materials such as:

  • Ink Jet Media
  • Polyester & PolypropelyneFilm
  • Pre-cut Vinyl
  • Engraving Laminates
  • Aluminium
  • Brass
  • Magnets
  • Stone, Marble, Granite

The most common type of material that Liquid Lens™ resin is applied to is specially coated range of white and silver coated ink jet polyester films manufactured by Liquid Lens™.

 

Q: What type of print process can I use?
A: We supply and support a wide range of digital print systems (Ink Jet, Thermal Resin and Colour Laser) each one specific to a particular application. We also provide solutions for Roland, Graphtec and Gerber print and cut machines along with traditional print processes such as silk screen and litho.

 

Products:

Q: What products can I manufacture?
A: There are thousands of applications across many different markets. Click here to see our Applications & Ideas gallery.

 

Resin:

Q: Does the Liquid Lens™ resin cartridge have a shelf life?
A: Due to the high level of UV stability in the product, and our new vacuum sealed packaging, the shelf life of an unopened Liquid Lens™ Resin Cartridge is guaranteed for 12 months from the date of manufacture.

 

Q: How high can the dome be?
A: Depending on the shape, size and surface finish of the decal it is possible to dome very high (3mm) or very low (1mm).

 

Q: What are Liquid Lens™ resins environmental and durability properties?
A: Liquid Lens™ resin has undergone many stringent testing procedures by users to determine its durability. It has proved itself to have excellent long term UV resistance to yellowing as well as outdoor weathering.

 

Q: What is the curing time?
A: At optimum room temperature and humidity (25°C @ 45% RH) the full cure time of the material is 24 hours. The initial gel time is a fast 45 minutes. In some cases the domed decals can be removed and applied before full cure has taken place. Domed material can be stored in warming cabinets @ 40°C to accelerate curing times.

 

Q: Why doesn’t it run over the edge?
A: Liquid Lens™ resin has been developed to have a relatively high surface tension, so that when it finds a sharp edge it will cling to and hold itself in a dome shape until it has gone through its curing process and is no longer fluid.

Although Liquid Lens™ resin has the ability to do this, there is still a maximum volume that can be applied to the shape before the weight of the resin becomes too much for the surface tension to hold, allowing the resin to overspill. This excess can be removed with a blunt knife blade allowing the decal edge to reform. With care the amount of wasted domes is typically less than 1% of total production.