The invention discloses a test paper bottom plate applied to an
in vitro diagnostic reagent, and the bottom plate comprises a plastic card, an acryl pressure-sensitive
adhesive film and a plastic release film, wherein the outer wall of one side of the plastic card is provided with the acryl pressure-sensitive
adhesive film. The preparation method comprises the following steps: 1, arranging the plastic card; 2,
coating a plastic release film; 3, performing rolling and bonding; 4, performing product packaging. The test paper bottom plate is safe and reliable, has the advantages of convenience intransportation, capability of being stored at normal temperature, saving of the constant-temperature storage cost, no bending after downstream use and
drying and reduction of defective products, andadopts the PVC, PS, PET, foam board and biodegradable material composite plastic release film; the plastic release film has the advantages of no water loss characteristic, so the straightness of the material before and after baking is achieved, and the productivity of a
client is greatly improved; meanwhile, defective products are reduced, the straightness of materials which are not affected by the temperature and
humidity storage environment is effectively improved, and the requirement for the downstream storage environment is effectively lowered.