Waterproof paper-plastic compound bag and preparation method thereof
A composite bag, waterproof paper technology, applied in the field of paper-plastic bag manufacturing, can solve the problems of deformation, loss of function, unfavorable large-scale use, etc., and achieve the effects of easy availability of raw materials, good biodegradation performance, and simple steps
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[0032] The invention also provides a method for preparing a waterproof paper-plastic composite bag, which is characterized in that the method includes:
[0033] (1) Compound polyacrylate and modifier to obtain modified polyacrylate;
[0034] (2) Combine starch, polyvinyl alcohol, poly-β-hydroxybutyrate, modified polyacrylate, high-density polyethylene, dicumyl peroxide, polyisobutylene, polyester fiber, lactose, glycerin, phthalate Dimethyl formate and epoxy resin. Mix uniformly and extrude to make a film;
[0035] (3) The film is heated and coated on the surface of the paper layer to form a plastic layer to prepare a composite paper; or the film is cut, drawn, and woven into a plastic layer, and then the plastic layer is glued The binding agent is adhered to the surface of the paper layer to make composite paper;
[0036] (4) Processing the composite paper machine into a waterproof paper-plastic composite bag.
[0037] In the above preparation method, the modifier can be any modifie...
Example Embodiment
[0053] Example 1
[0054] (1) At 25°C, compound polyacrylate and silicone oil (mass ratio 100:20) at 70°C for 4 hours to obtain modified polyacrylate;
[0055] (2) At 25℃, combine wheat starch (weight average molecular weight of 12000), polyvinyl alcohol (weight average molecular weight of 16000), poly β-hydroxybutyrate (weight average molecular weight of 12000), modified polyacrylate (Weight average molecular weight is 22,000), high-density polyethylene (weight average molecular weight is 40,000), dicumyl peroxide (weight average molecular weight is 18,000), polyisobutylene (weight average molecular weight is 20,000), polyester fiber (weight average molecular weight is 20,000) The molecular weight is 15000), lactose, glycerin, dimethyl phthalate and epoxy resin (weight average molecular weight is 4000) (the mass ratio of the raw materials is 100:10:5:30:15:5:12:5: 1:1:3:1) Mix for 2h, and extrude at 240°C to obtain a film.
[0056] (3) The film is cut, drawn, and woven into a plas...
Example Embodiment
[0058] Example 2
[0059] (1) Compound polyacrylate and silicone oil (mass ratio 100:15) at 25°C for 3 hours at 50°C to obtain modified polyacrylate.
[0060] (2) At 25℃, combine wheat starch (weight average molecular weight of 12000), polyvinyl alcohol (weight average molecular weight of 16000), poly β-hydroxybutyrate (weight average molecular weight of 12000), modified polyacrylate (Weight average molecular weight is 22,000), high-density polyethylene (weight average molecular weight is 40,000), dicumyl peroxide (weight average molecular weight is 18,000), polyisobutylene (weight average molecular weight is 20,000), polyester fiber (weight average molecular weight is 20,000) The molecular weight is 15000), lactose, glycerin, dimethyl phthalate and epoxy resin (weight average molecular weight is 4000) (the mass ratio of the raw materials is 100:10:5:30:15:5:12:5: 1:1:3:1) Mix for 2h, and extrude at 240°C to obtain a film.
[0061] (3) The film is cut, drawn, and woven into a plast...
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