Information writing film and sample storage body

Abstract

To provide an information writable film that is chemical and abrasion resistance, and is suitable for high contrast white laser marking. The information writable film comprises a writable film layer 110 and a reading assistance layer 120. The writable film layer 110 is formed into a film shape by thinly stretching a material, which material is mixed a color former composition for coloring white when receiving the particular wavelength laser beam by changing its physical and chemical characteristic and a transparent plastic composition. The reading assistance layer 120 is installed for enhancing the contrast ratio. The writable film layer 110 is provided with laser coloring properties and chemical and abrasion resistance. During writing, an identification code is written by laser by coloring the color former in the writable film layer 110. During reading, the contrast ratio is enhanced by superimposing the color of the reading assistance layer 120.

Description

technical field [0001] The present invention relates to an information writing film for laser marking having clear laser color rendering. In particular, it relates to an information writing film for affixing to a sample storage body used for storing and storing various samples and for writing information. [0002] Here, the sample storage body is used for various purposes other than storage and storage of samples, for example, the application of enclosing and storing and storing samples for drug development; for storing genetic information such as DNA in the medical field It is used for storage and storage of samples and samples. Background technique [0003] In the research and development of pharmaceuticals and chemicals, it is necessary to store and store various samples in storage tubes. For example, to prepare a plurality of samples with slightly changed conditions, combinations, etc. for comparative control experiments, it is necessary to manage and store the samples...

AI Technical Summary

Problems solved by technology

It should be noted that if a large amount of color-developing materials of other black color systems are mixed in simply to increase the contrast ratio, due to the ingenious technology of the compounding ratio of the color-developing materials with special components, etc., by changing the compounding ratio, it may produce Problems where the target component that prevents laser energy from being developed into a white-colored color, or that cannot be smoothly developed into a white-colored color

[0024] The second problem is the heat shrinkage deformation and resolution reduction caused by the heat during laser marking

[0025] For laser marking, it absorbs laser energy and changes the physical and chemical properties of the ingredients to develop color. However, due to local heat generation, if the identification code is written on a thinly stretched film-like label, it will cause Thermal shrinkage, resulting in adverse conditions such as local wrinkles and aggregation

In addition, due to irregular thermal shrinkage, the written identification code is deformed, and the edge of the black and white dividing line cannot be clearly displayed, and it becomes a so-called "wetting state", which may lead to a decrease in resolution.

Even if a part of the code such as a barcode or a two-dimensional code is stained or missing, such redundancy can be read, and the recognition rate may decrease due to deformation or infiltration

[0026] The third issue is ensuring chemical resistance and wear resistance

A color developer that develops a white color by laser writing has poor chemical resistance and may be infiltrated by chemicals

In addition, the white part is a foamed part, which has poor abrasion resistance and may become thinner locally when wiped.

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