IntroductionThermal paper, also known as heat-sensitive paper, is a type of paper that is coated with a special chemical layer that reacts to heat.  When heat is applied to the paper, the chemical layer produces an image or text, which can be easily read.  Thermal paper is widely used in various industries, including retail, hospitality, banking, and healthcare.  In this article, we will focus on the raw material of thermal paper, known as thermal paper base.

What is Thermal Paper Base?

Thermal paper base is the raw material used to manufacture thermal paper.  It is a type of paper that is coated with a thermal coating on one or both sides.  The thermal coating is made up of a mixture of dyes, developers, and other chemicals that are sensitive to heat.  When heat is applied to the paper, the chemicals react and produce an image or text.

Types of Thermal Paper BaseThere are two main types of thermal paper base: direct thermal paper base and thermal transfer paper base.

Direct thermal paper base is coated with a heat-sensitive layer on one side, and the image or text is produced directly on the paper when heat is applied.  This type of paper is commonly used in retail, hospitality, and healthcare industries for printing receipts, labels, and tickets.

Thermal transfer paper base, on the other hand, is coated with a heat-sensitive layer on one side and a transfer layer on the other side.  The image or text is first printed on the transfer layer using a thermal transfer printer, and then transferred onto the paper by applying heat and pressure.  This type of paper is commonly used in the manufacturing and logistics industries for printing labels and tags.

Raw Materials Used in Thermal Paper BaseThe main raw materials used in thermal paper base are:

1.  Base paper – This is the main component of thermal paper base, and it is typically made from wood pulp or recycled paper.  The base paper is coated with a thermal coating on one or both sides, depending on the type of thermal paper being produced.

2.  Thermal coating – This is the layer that reacts to heat and produces the image or text.  The thermal coating is made up of a mixture of dyes, developers, and other chemicals that are sensitive to heat.  The exact composition of the thermal coating varies depending on the type of thermal paper being produced and the specific application.

3.  Adhesives – Adhesives are used to bond the thermal coating to the base paper.  The type of adhesive used depends on the specific application and the properties required of the thermal paper.

4.  Release agents – Release agents are used to prevent the thermal coating from sticking to the printer head during printing.  This helps to prolong the life of the printer head and ensure consistent print quality.

Manufacturing Process of Thermal Paper BaseThe manufacturing process of thermal paper base involves the following steps:

1.  Preparation of base paper – The base paper is prepared by cutting it into the required size and weight and coating it with a primer layer to improve adhesion.

2.  Preparation of thermal coating – The thermal coating is prepared by mixing the required chemicals in the correct proportions.  The mixture is then applied to the base paper using a coating machine.

3.  Drying – The coated paper is dried using a series of heated rollers to remove any excess moisture and ensure that the thermal coating is evenly distributed.

4.  Slitting and rewinding – The dried paper is slit into the required width and length and rewound onto rolls for storage and transportation.

ConclusionThermal paper base is a crucial component in the manufacturing of thermal paper.  It is made up of a base paper coated with a thermal coating that reacts to heat and produces an image or text.  There are two main types of thermal paper base – direct thermal paper base and thermal transfer paper base – each with its own specific properties and applications.  The manufacturing process of thermal paper base involves several steps, including preparing the base paper, preparing the thermal coating, drying, slitting, and rewinding..