Card insertion type copybook
A card-type, copybook technology, applied in educational appliances, instruments, teaching aids, etc., can solve problems such as waste of resources, and achieve the effects of saving expenses, improving the efficiency of writing characters, and reducing the cost of practicing characters.
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specific Embodiment 2
[0025] refer to figure 1 with figure 2 , a kind of plug-in type copybook, described copybook comprises cover paper 1, some copybook folders 2 and some copybook cards 3, described copybook folder 2 is arranged in the cover paper 1 that is set in half, and described cover paper 1 is a cardboard cover paper 1, and the cover paper 1 is printed with a well-designed cover pattern; the copybook folder 2 is made of sulfuric acid paper folded in half, and the sulfuric acid paper is made of fine plant fibers through Intertwined with each other, after free beating, no sizing, no filler, papermaking in a wet state, soaking in 72% concentrated sulfuric acid for 2 to 3 seconds, washing with clean water, treating with glycerin, and forming a hard film type after drying Material, sulfuric acid paper is solid, dense and slightly transparent, not only has strong resistance to the penetration of oil and water, is airtight, but also can be waterproof, moisture-proof, oil-proof, sterilized, disi...
specific Embodiment 3
[0026] refer to figure 1 with figure 2 , a kind of plug-in type copybook, described copybook comprises cover paper 1, some copybook folders 2 and some copybook cards 3, described copybook folder 2 is arranged in the cover paper 1 that is set in half, and described cover paper 1 is a cardboard cover paper 1, and the cover paper 1 is printed with a well-designed cover pattern; the copybook folder 2 is made of sulfuric acid paper folded in half, and the sulfuric acid paper is made of fine plant fibers through Intertwined with each other, after free beating, no sizing, no filler, papermaking in a wet state, soaking in 72% concentrated sulfuric acid for 2 to 3 seconds, washing with clean water, treating with glycerin, and forming a hard film type after drying Material, sulfuric acid paper is solid, dense and slightly transparent, not only has strong resistance to the penetration of oil and water, is airtight, but also can be waterproof, moisture-proof, oil-proof, sterilized, disi...
specific Embodiment 4
[0027] refer to image 3 with Figure 4 , a kind of plug-in type copybook, described copybook comprises cover paper 1, some copybook folders 2 and some copybook cards 3, described copybook folder 2 is arranged in the cover paper 1 that is set in half, and described cover paper 1 is a cardboard cover paper 1, and the cover paper 1 is printed with a well-designed cover pattern; the copybook folder 2 is made of sulfuric acid paper folded in half, and the sulfuric acid paper is made of fine plant fibers through Intertwined with each other, after free beating, no sizing, no filler, papermaking in a wet state, soaking in 72% concentrated sulfuric acid for 2 to 3 seconds, washing with clean water, treating with glycerin, and forming a hard film type after drying Material, sulfuric acid paper is solid, dense and slightly transparent, not only has strong resistance to the penetration of oil and water, is airtight, but also can be waterproof, moisture-proof, oil-proof, sterilized, disi...
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