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Paper-based recyclable composite material and preparation method thereof

A composite material and paper-based technology, applied in paper coating, papermaking, packaging paper, etc., can solve the problems of poor paper barrier properties, difficult to degrade and recycle, and not conforming to an environment-friendly society, and achieve stable and controllable quality , process adaptability improvement, good heat sealing effect

Pending Publication Date: 2022-06-21
JIANGYIN BAOBO PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor barrier properties of paper, it is usually necessary to compound aluminum foil or plastic film to achieve packaging functions such as barrier and heat sealing. However, aluminum foil and plastic are not easy to degrade and recycle, and do not meet the requirements of building an environmentally friendly society.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A paper-based recyclable composite material, the composite material sequentially includes a paper base layer, a barrier coating, an adhesive layer, and a heat-sealing layer from the outside to the inside; the barrier coating components include 12 parts of modified acrylic resin, nano-silica 6 parts of coatings, the particle size of the nano-silica coating is 7nm, 1 part of softener bis-polyethylene polydimethylsiloxane, 1 part of stabilizer magnesium stearate, 1 part of defoamer dimethicone, 68 parts of purified water; the modified acrylic resin includes 3 parts of methyltriethoxysilane, 12 parts of epoxy resin, 1 part of polytetrafluoroethylene, and 0.5 part of calcium carbonate. The adhesive of the adhesive layer is water-based polyurethane, and the heat-sealing layer adopts a mixed emulsion of wt% of polylactic acid emulsion: wt% of acrylic emulsion=1:1.

[0019] In the method for preparing a paper-based recyclable composite material, the barrier coating is uniformly...

Embodiment 2

[0021] A paper-based recyclable composite material, the composite material sequentially includes a paper base layer, a barrier coating, an adhesive layer, and a heat-sealing layer from the outside to the inside; Sealing layer; the components of the barrier coating include 15 parts of modified acrylic resin, 12 parts of nano-silica coating, the particle size of the nano-silica coating is 40nm, softener dioctadecyl dimethyl ammonium chloride 2 parts, stabilizer 2 parts sodium dioctyl succinate sulfonate, defoaming agent cyanuric chloride melamine 2 parts, purified water 79 parts; the modified acrylic resin includes 4 parts methyl triethoxysilane, epoxy resin 13 parts of resin, 2 parts of polytetrafluoroethylene, and 1.5 parts of calcium carbonate. The adhesive of the adhesive layer is polyacrylate, and the heat-sealing layer is acrylic emulsion.

[0022] In the method for preparing a paper-based recyclable composite material, the barrier coating is uniformly coated on the paper...

Embodiment 3

[0024] A paper-based recyclable composite material, the composite material sequentially includes a paper base layer, a barrier coating, an adhesive layer, and a heat-sealing layer from the outside to the inside; the barrier coating components include 14 parts of modified acrylic resin, nano-silica 10 parts of coatings, the particle size of the nano-silica coating is 20nm, 2 parts of softener polydimethylsiloxane diquaternary amine, 1.5 parts of 2-methacrylate ethylene oxide methyl ester stabilizer, defoamer 2 parts of polyoxypropylene glycerol ether and 75 parts of purified water; the modified acrylic resin includes 4 parts of methyltriethoxysilane, 12 parts of epoxy resin, 2 parts of polytetrafluoroethylene, and 1 part of calcium carbonate. The adhesive is an adhesive layer composed of water-based polyurethane wt%: polyacrylate wt%=2:1, and the heat-sealing layer adopts polylactic acid emulsion.

[0025] In the method for preparing a paper-based recyclable composite material,...

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Abstract

The invention discloses a paper-based recoverable composite material. The composite material sequentially comprises a paper-based layer, a barrier coating, an adhesive layer and a heat-sealing layer from outside to inside, or the outer side of the paper-based layer can further sequentially comprise the barrier coating, the adhesive layer and the heat-sealing layer from inside to outside; the barrier coating comprises the following components: 12-15 parts of modified acrylic resin, 6-12 parts of a nano silicon dioxide coating, 1-2 parts of a softener, 1-2 parts of a stabilizer, 1-2 parts of a defoaming agent and 68-79 parts of purified water; the modified acrylic resin is prepared from 3 to 4 parts of methyl triethoxysilane, 12 to 13 parts of epoxy resin, 1 to 2 parts of polytetrafluoroethylene and 0.5 to 1.5 parts of calcium carbonate. The film is high in barrier property, low in water vapor permeability and oxygen permeability, good in heat sealability, high in tensile strength, easy to recycle and excellent in comprehensive performance in all aspects.

Description

technical field [0001] The invention relates to the field of composite sheets, in particular to a paper-based recyclable composite material and a preparation method thereof. Background technique [0002] As a green and environmentally friendly packaging material, paper has been widely used in the field of consumer goods. Due to the poor barrier properties of paper, it is usually necessary to compound aluminum foil or plastic film to achieve packaging functions such as barrier and heat sealing. Therefore, how to recycle the paper-based packaging composite materials by downstream manufacturers has become a major problem in today's society. [0003] Therefore, it is an urgent technical problem for those skilled in the art to develop a paper-based recyclable composite material with strong barrier properties, good heat-sealing properties and excellent comprehensive properties. SUMMARY OF THE INVENTION [0004] In order to overcome the defects in the prior art, the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/82D21H19/40D21H21/14D21H21/52D21H19/46D21H19/56D21H19/62D21H19/38D21H19/24D21H19/20
CPCD21H27/10D21H19/826D21H19/40D21H21/14D21H21/52D21H19/46D21H19/56D21H19/62D21H19/385D21H19/24D21H19/20
Inventor 黄湘晖王清李全布王芳颖
Owner JIANGYIN BAOBO PACKING
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