Coating process for fully-degradable recyclable packaging material
A packaging material and coating process technology, which is applied in the field of fully degradable and recyclable packaging material coating process, can solve the problems affecting the full degradation and recycling of packaging materials, and achieve high tear resistance, high practicability, and improved The effect of overall strength
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Embodiment 1
[0038] The fully degradable and recyclable packaging material coating process in this embodiment, such as figure 1 shown, including the following steps:
[0039] S1. Selection and pretreatment of the main body of packaging materials: such as figure 2 As shown, the fully degradable paper 1 is selected as the main body of the packaging material, and the powder removal and static elimination processes are performed on the fully degradable paper 1 .
[0040] S2, equipped with glue: Stir and mix dehydration malic acid resin, dammar resin, acrylic emulsion and water, the mass ratio of dehydration malic acid resin to dammar resin and acrylic emulsion is 2:1:2, and the solid content of the glue is 45%.
[0041] S3. Preheating the glue: heat the glue prepared in step S2 to 70-80°C and keep it warm. The temperature of the glue in this embodiment is 80°C.
[0042] S4. Coating glue: On the surface of the fully degradable paper 1 selected in step S1, evenly coat the glue in step S3, an...
Embodiment 2
[0046] The difference between this example and Example 1 is that the mass ratio of the dehydrated malic acid resin to the dammar resin and the acrylic emulsion is 1.9:1:1.9, and the solid content of the glue is 44%.
Embodiment 3
[0048] The difference between this example and Example 1 is that the mass ratio of the dehydrated malic acid resin to the dammar resin and the acrylic emulsion is 2.1:1:2.1, and the solid content of the glue is 46%.
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