Project Overview
Industry: Wood oils/ Ecommerce
Machinery Installed: Pratika L-Sealer, Shrink Heat Tunnel and Infeed & Outfeed Conveyors
Outcome: Reduced cost packing system suitable for Amazon Liquids seller rules
Rainbow Chalk Marker Limited, the makers of Rubio Monocoat, a specialist wood oil, has recently invested in new packaging capability to ramp up production of their online sales. Their new fully automated packaging line was supplied by YPS.
The challenge – growing online sales of liquids
“Our growing online sales were putting a strain on our manual packing operation, so we needed to find a higher speed process. Our new line from YPS is exactly what we were looking for and is proving its worth with fast, consistent packing ever day,” commented Richard Geddes, Managing Director – Paint at Rainbow Chalk Markers.
A successful, consistent shrink-wrapping operation was vital to Rainbow Chalk Markers as they are Amazon online sellers, needing to conform to Amazon’s strict guidelines relating to the sale of liquids. These restrictions insist that liquids are fully wrapped prior to despatch to ensure no leakage in transit.
The Solution – shrink wrapping replaces grip seal bags
The solution supplied by YPS was a complete packaging line, comprised of a Pratika fully automatic L-sealer, shrink heat tunnel and both infeed and outfeed conveyors. The L-sealer is designed for very high speeds without operator intervention and is also ideal for smaller packs, with the inclusion of a kissing conveyor.
The Result – Protection at a fraction of the cost
As well as providing the required fully sealed product wrap, the new shrink-wrapping line delivers the protection needed at a fraction of the cost of the company’s previous solution.
Previously, grip seal bags were used. That method not only used more expensive consumables but was significantly more time and resource consuming, as each seal needs to be manually peeled and then pressed down once the product has been inserted.
The new line therefore offers wrapping at significantly increased speeds. Rainbow Chalk Markers are selling small pots of Rubio Monocoat at 2 litres and below from their online store. Sales are growing rapidly and the faster packaging speeds and higher throughput the new line affords allows them to keep pace with current demand and be ready for even further growth in the future.
YPS also impressed Rainbow Chalk Markers with the backup and support they offered. Having experienced some minor operator teething issues, the YPS Engineering Team delivered additional training, resolving the problem.
“We hugely appreciated YPS’s actions in getting the line back up and running. We’re now very busy with production and this equipment has become vital in our process”, Richard concluded.
Benefits at a glance
reduced costs
Increased throughput
leakproof packaging
service and support

Designed to provide faster speeds without the use of operators, our fully automatic L sealers are easy to use and extremely reliable.
- Speeds of up to 40 packs per minute
- No need for an operator
- Available in mild and stainless steel
- Optional kissing conveyor for small packs
- Height adjustable sealing head for perfect seal alignment