Polyester film base for dry type medical film

Abstract

The invention provides a polyester film base for a dry type medical film. The polyester film base comprises a back layer, a thin film supporter and a bottom layer, wherein the bottom layer and the back layer are coated on two sides of the thin film supporter respectively through online coating; the bottom layer of the polyester film base improves the adhesive force between the film base and a thermo-sensitive imaging layer; at the same time, the back layer of the film base has excellent smoothness and anti-static function, so that an electrostatic phenomenon and an adhesion phenomenon of the film are kept not to occur; and excellent laminating performance is achieved. The polyester film base is simple in production technology, low in manufacturing cost and excellent in overall performance.

Description

technical field [0001] The invention relates to the technical field of medical films, in particular to a base for dry medical films. Background technique [0002] With the continuous development of medical imaging technology, from wet medical film to dry medical film, and dry medical digital film. At present, dry medical film has become the mainstream in medical image recording. Traditional wet medical film mainly refers to silver halide photosensitive medical film, which is easily affected by external environmental factors and difficult to preserve. The imaging process of the film needs to be completed by developing and fixing, and the waste liquid is generated during the developing and fixing process of the film, which pollutes the environment. Dry medical film does not need to be processed by developing and fixing solution like wet medical film. It is a new type of digital imaging medical film processed by heat-sensitive, laser or inkjet printing. The processing proces...

AI Technical Summary

Problems solved by technology

Laser printing dry film is a kind of photosensitive material medical film developed with laser printers. The film has the advantages of stable imaging and convenient processing, but the cost of coating materials for this film is slightly higher, the scope of use is limited, and there are storage problems. Poor stability; inkjet printing dry film is a medical imaging film for inkjet printing, which has poor smoothness and anti-static effect when used; thermal printing dry film is a medical film for thermal printing, generally Using organic thermosensitive coating for imaging, some films have the problem of poor adhesion between film base and thermosensitive imaging layer, and poor slippery performance and antistatic effect

[0004] The above-mentioned medical film usually uses polyester film as a support. In order to improve the adhesion of the imaging layer to the film support, it is necessary to pre-coat the polyester film support. This bottom-processed polyester film is generally called It is a polyester film base, and the polyester film base has poor adhesion to part of the thermosensitive imaging layer, which leads to the phenomenon of powder falling and chipping of the film during the slitting and printing process, which affects the quality and printing efficiency of the film At the same time, it will cause damage to the processing machinery and equipment; the back of the polyester film base has poor slip performance and anti-static function, resulting in adhesion during the printing process and poor pass-through performance, so it is necessary to coat the back to improve slip performance And anti-static function, the cost is higher

In the production process of traditional laser printing dry film, inkjet printing dry film and thermal printing dry film, before the back layer coating process, the bottom layer is first coated on the surface of the polyester film, and then the bottom layer is coated on the bottom layer The surface is coated with the back layer, and the steps are lengthy, which is not conducive to improving production efficiency

[0005] In summary, laser printing dry film, inkjet printing dry film and thermal printing dry film have poor smoothness and anti-static function on the back of the polyester base, and adhesion occurs during the printing process. The mechanical performance is poor, so it needs to be coated on the back to improve the smooth performance and anti-static function, and the cost is high

At the same time, there is a phenomenon of poor adhesion between the bottom layer of the polyester film base for thermal printing dry film and the thermal imaging layer.

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