Single-glue-layer plastic card applied to rapid diagnosis, and preparation method and equipment thereof

Abstract

The present invention discloses a single-glue-layer plastic card applied to rapid diagnosis, and a preparation method and equipment thereof. The method comprises the following steps: step one, flattening a plastic sheet; step two, simultaneously applying a non-drying glue onto release paper; and step 3: enabling the glue face of the release paper to face to the flattened plastic sheet, and performing rolling press to bond the non-drying glue layer of the release paper to the plastic sheet. The single-glue-layer plastic card includes the plastic sheet and the release paper which are adhered bythe non-drying glue layer. The equipment comprises a plastic-sheet reeling and unreeling roller, a release-paper reeling and unreeling roller, a constant-tension stretching device playing a role in both plastic-sheet reeling and rolling combination, a warm water tank, a cooling device and a non-drying glue applying roller and a drying tunnel. According to the invention, the flattening problem of the plastic sheet during a continuous feeding process is solved, the heating temperature is constant, the flattening effect is good, the detection card only need one layer of non-drying glue, a film isomitted, the cost is greatly reduced, the processing steps are fewer and adverse effects such as dust pollution is greatly improved.

Description

technical field [0001] The invention relates to a detection sheet for rapid diagnosis, also known as a plastic card, in particular to a single-layer rubber plastic card for rapid diagnosis and a manufacturing method and equipment thereof. Background technique [0002] The existing rapid diagnostic test sheet is a plastic card, and its structure includes a plastic sheet, double-sided adhesive tape and release paper. The double-sided adhesive tape is composed of a film in the middle and self-adhesive adhesive layers coated on both sides of the film. The processing of this plastic big card is to take a flattened plastic sheet at a time, spread it on the workbench, then paste the purchased double-sided adhesive on the plastic sheet, and then cover the release paper on the plastic sheet. on double-sided tape. There are great defects in the processing and production of this existing plastic card: 1. The production and processing technology is backward, and can only be processed ...

AI Technical Summary

Problems solved by technology

There are great defects in the processing and production of this existing plastic card: 1. The production and processing technology is backward, and can only be processed one by one, which cannot be continuously produced, and the work efficiency is low; 2. The self-adhesive is harmful to the dust in the air It has strong adsorption. When making double-sided adhesive tape, it is necessary to apply the self-adhesive on the film, and then spread the self-adhesive on the plastic sheet again, and finally cover the double-sided adhesive with release paper. There are many processing links, and the self-adhesive is exposed to the air for a long time, which has potential pollution risks. Similarly, the purchased plastic sheets need to be tiled again, and the time exposed to the air is also long. Plastic sheets with static electricity It also has strong adsorption to dust in the air, and there is also a hidden danger of pollution; 3. There is an extra layer of film and a layer of self-adhesive adhesive layer, which has a complex structure and high cost

[0003] The plastic card with this structure has the following defects: the buyer who purchased the plastic card needs to peel off the release paper, and paste a salt-treated card containing antigen or antibody on the exposed self-adhesive layer. Nitrocellulose membrane

Because the nitrocellulose membrane is a three-dimensional structure with strong polarity, and the existing acrylic polymer self-adhesive adhesive layer has weak acidity and colloidal cold flow, the weak acidity of the adhesive adhesive layer will cause the acidity of the adhesive layer to be treated with a salt substance. The processed nitrocellulose membrane produces nanoscale crystals, which will produce black lines during the test and affect the test results; the cold flow of the self-adhesive colloid will destroy the structure of the nitrocellulose membrane (colloid flows into the three-dimensional structure), and will directly affect the nitrocellulose. Membrane and protein (antigen or antibody) detection results

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