We are proud of the consistently high quality and durability of our Heat Transfers.
Heat Transfers from Avery Dennison NTP are optimized to be applied to fabrics made of cotton, technical fabrics and heavier polycotton. The transfers are produced to withstand repeated wash and demonstrate long durability without failure.
The strict quality control performed by our Test Center, makes our customers trust that the products they receive are of high quality. Samples of every production job goes through a rigorous test system to make sure that it meets the right quality level. This makes NTP certain that the transfers our customers receive are made according to our quality specifications.
How tests are done
Transfers are applied to different fabrics with different temperatures and time settings, and are washed 10 times at either 60 or 90 degrees Celsius. The specimens are evaluated right from the first cycles, as mistakes are often detected at this stage, and then again at the end of the test.
- With tests like this we can give assurance and security to our customers. They should trust that we keep a consistent high quality and long durability for our products, says Quality Manager at NTP, Juan Pablo Montoya.
To make sure that our tests are representing real life performance, we use standard domestic washing machines. The washed samples are dried after each wash cycle, and the machines are filled up to mirror a realistic weight. Each specimen is washed 4-5 times per day, and including application and waiting times, it normally takes a week to fulfill one complete test.
Defects during testing
The use of standard fabrics for testing, such as cotton, nylon or polyester/cotton makes it easier to compare tests and to detect variations from the norm. Due to the experience we have with standard tests we know how a normal transfer should behave, and defects are detected earlier.
If major defects are detected we normally see this after a few washes. The batch number is then identified and we start a proper investigation. In a few occasions we have contacted the customer to make sure that the defective products are not used until they have been replaced.
If the customer notices a defect on their end, the Test Center gets involved with the complaint immediately. We gather production documents and tested samples from the production job as the first thing during the investigation. With the help from this information we can often find the root cause and come up with a good solution for our customer.
Required testing assistance
We also offer support to customer requests for testing our products on new garments and fabrics. The customer sends us their sample or garment, and we identify the optimal application settings in our Test Center. This could be challenging, as the development of new fabrics, special coatings and surface treatments are ever expanding. Still, the feedback shows that our customers appreciate our knowledge and support, and value this extra service since it saves their shop from claims and extra time costs.
In general, our customers have good knowledge about how to apply our transfers, with good tricks and procedures to make the heat transfers stick to the garments. However, sometimes the temperature, dwell time, or pressure could be outside our specifications and defects may occur.
- «In most cases where a complaint comes in we detect that wrong application is the root cause of the problem. There should be enough room for small mistakes, as the product have safety margins, but we always recommend our customers to stay within our standard application settings. In addition, it could be a good idea to check the heat press machine regularly», explains Montoya.
Other tests like Migration and stretch
In addition to test for quality by multiple washes, we also test polyester fabrics for dye migration. We do this according to the strict Nike standard where the specimen are placed in the oven for 48 hours to see if dye migrates through the heat transfer and miscolours them. If this happens, we recommend a blocking layer to stop the dye from getting through.
In some cases our customers ask for a stretch test and then we perform the test on our in-house Instron test machine. We can also test for abrasion on our transfers (crocking), and can perform wash tests according to the AATCC standards or specific customer methods.
Security for the customer
When the customer places an order with NTP he should be assured that he will receive heat transfers of top quality made from a manufacturing process that meets the strictest environmental standards. We use renewable energy, we fulfil the Eco-Lighthouse certification and we are a member of Grønt Punkt Norge (“Green Dot Norway”, to warranty our collected packaging is recycled, or recovered as energy. Our products are tested every year to the strictest Oeko-Tex® standard to make sure our products are free of heavy metals, lead and PVC.
Our ambition is that the next generation heat transfers will come from NTP. With a close relationship between our Test Center and our Innovation Center, we test all the new ideas and find innovative solutions to develop further.
Learn more about our products here.