The need for creping chemistry
The use of creping aids provides the following benefits:
- Creation of an interface between the tissue and the Yankee drying cylinder to protect the Yankee drying cylinder from wear and corrosion from the doctor blade.
- Creation of a medium to improve sheet structure and crepe formation.
- Improved sheet breakdown to give better surface softness by creating a finer crepe.
- Improved bulk softness due to better crepe microfolds and macrofolds during the creping process.
- Improved blade wear and tear and gives better blade life.
- Allows the mill to make added value tissue products.
Most creping and release products are applied by the use of a spray to the Yankee surface using a dedicated spray bar and spraying rig.
Amazon Papyrus has a range of creping adhesives, release agents, coating modifiers and plasticisers. These products allow optimisation of your Yankee coating chemistry for the grade of paper you are making, whatever your furnish conditions, fibre type, recycled fibre content and operational speed.
AmiCoat TC series comprise of a range of Yankee coating adhesives for the manufacture of bathroom, facial, napkin and towels.It includes specially formulated products to provide adhesives ranging from both soft and hard tack to soft set and quick set for slow machines. The range also includes products designed for use in modern high speed machines.
AmiCoat TM series comprise of a range of specially formulated inorganic and organic modifiers to complement the AmiCoat TC range of adhesives in giving cylinder protection and coating flexibility.
AmiCoat TR series comprise of a range of vegetable, mineral and synthetic release agents including plasticisers to complement the adhesives for all types of tissue production, edge control and papers requiring release properties.
In tissue mills, the use of an Infra-red thermal camera (shown below) can help create real-time images which in turn help to select the right creping program. We conduct technical audits with the use of Infra–red technology as a diagnostic tool to improve creping, felt cleaning and wire cleaning operations. The use of Infra-red also helps to improve the creping process and reduce the moisture variations in the reel by highlighting other problem areas both in the Yankee and around the system.
In addition to the use of Infra-Red, stroboscopic detection techniques (via videos) are also used to identify problem areas.
Our team of professionals would work with you to select the most appropriate products and spraying systems, putting into consideration your finished product requirements and if wet end stock chemicals are providing the release and adhesive properties. We could also help you to design the appropriate spray equipment to meet your machine requirements, including spray pattern and nozzle selection to meet operational criterion.
Basic 3 component creping rig