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Smith & Mclaurin is using a carbon infrared heating system from Heraeus Noblelight to more than double line speed on one of its paper coating lines. The company has also improved quality by eliminating adhesive substrate patterns with coloured adhesive.

The infrared system at Smith & McLaurin

Smith & Mclaurin is a manufacturer and supplier of self-adhesive label, ticket and tag materials. It sells material in roll form to printers and converters who produce finished label ticket and tag products for a variety of end users, including supermarkets, pharmacy chains, logistics companies and food manufacturers.

A particular product finds application where security is important, such as in labels and security envelopes. This product requires a water-based adhesive to be applied to a high-value stock before a laminate is applied to the adhesive. In some cases, the laminated product is re-passed through the adhesive station so that the laminated layer itself carries a layer of surface adhesive.

Previously, the adhesive was dried in a warm air oven but this sometimes caused problems when drying coloured adhesives, with ‘spotting’ or reticulation, which created an uneven and visible adhesive pattern on the substrate. As a result it was necessary to slow down the line to around 20m/min.

In an effort to solve the problem, Smith & Mclaurin contacted Heraeus, which supplied a portable infrared module to allow tests to be carried out on site. The tests were so successful that a 32.5kW system equipped with five carbon medium-wave emitters was installed immediately before the existing warm air heaters.

Key benefits of product application

  • The Heraeus system was easily retrofitted at Smith & Mclaurin’s factory in Renfrewshire after on-site tests.
  • The emitters are individually controlled so that they can be switched on and off according to the coating weight
  • Iain McCourty, engineering manager at the Renfrewshire site, said: ‘By using the infrared heaters to direct an initial burst of energy at the wet adhesive we have been able to eliminate any “spotting”. This has meant that we have been able more than double line speed. It has also meant that we have been able to guarantee quality which has helped to consolidate our relationships with customers.’

Smith & Mclaurin doubles line speed on paper coating line with carbon infrared heating

Smith & Mclaurin is using a carbon infrared heating system from Heraeus Noblelight to more than double line speed on one of its paper coating lines. The company has also improved quality by eliminating adhesive substrate patterns with coloured adhesive.

The infrared system at Smith & McLaurin

Smith & Mclaurin is a manufacturer and supplier of self-adhesive label, ticket and tag materials. It sells material in roll form to printers and converters who produce finished label ticket and tag products for a variety of end users, including supermarkets, pharmacy chains, logistics companies and food manufacturers.

A particular product finds application where security is important, such as in labels and security envelopes. This product requires a water-based adhesive to be applied to a high-value stock before a laminate is applied to the adhesive. In some cases, the laminated product is re-passed through the adhesive station so that the laminated layer itself carries a layer of surface adhesive.

Previously, the adhesive was dried in a warm air oven but this sometimes caused problems when drying coloured adhesives, with ‘spotting’ or reticulation, which created an uneven and visible adhesive pattern on the substrate. As a result it was necessary to slow down the line to around 20m/min.

In an effort to solve the problem, Smith & Mclaurin contacted Heraeus, which supplied a portable infrared module to allow tests to be carried out on site. The tests were so successful that a 32.5kW system equipped with five carbon medium-wave emitters was installed immediately before the existing warm air heaters.

Key benefits of product application

  • The Heraeus system was easily retrofitted at Smith & Mclaurin’s factory in Renfrewshire after on-site tests.
  • The emitters are individually controlled so that they can be switched on and off according to the coating weight
  • Iain McCourty, engineering manager at the Renfrewshire site, said: ‘By using the infrared heaters to direct an initial burst of energy at the wet adhesive we have been able to eliminate any “spotting”. This has meant that we have been able more than double line speed. It has also meant that we have been able to guarantee quality which has helped to consolidate our relationships with customers.’

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