High-barrier environment-friendly degradable coffee capsule cover film and preparation method thereof
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A coffee capsule, high barrier technology, applied in the direction of chemical instruments and methods, sustainable manufacturing/processing, adhesives, etc., can solve the problems of non-degradable, environmental pollution, coffee capsule waste plastics, etc., achieve good water and oxygen barrier performance, alleviate Pollution, the effect of mitigating environmental pollution
Active Publication Date: 2020-11-10
周锐
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[0003] Coffee capsules are generally made of a plastic cup body and a cover film. In order to ensure that the coffee capsule can still maintain its original shape at high temperature and retain the aroma of the coffee inside the capsule, the cup body of the existing coffee capsule is usually made of a plastic cup with good barrier properties. However, because coffee capsules are disposable products, a large amount of waste plastics will be produced after use, which will pollute the environment. Therefore, people are committed to researching degradable coffee capsules; currently, there are available The cup body of the degraded coffee capsule, however, the cover film of the coffee capsule is still made of aluminum foil, which leads to the production of a large amount of non-degradable substances when using the coffee capsule, causing environmental pollution
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preparation example 1
[0041] Preparation example 1 of water-based adhesive: take 20kg of water, heat it to 95°C, add 10kg of absolute ethanol, 40kg of ethylene-vinyl acetate copolymer emulsion, 5kg of polyvinyl alcohol, and 2kg of polyvinyl butyral while stirring , 2kg of polyvinylpyrrolidone and 0.3kg of phenyl-o-hydroxybenzoate were stirred for 20min at a speed of 200r / min, then 0.06kg of bactericide and 0.2kg of defoamer were added, and stirring was continued for 5min. After cooling, a water-based adhesive was obtained.
preparation example 2
[0042] Preparation example 2 of water-based adhesive: Take 22.5kg of water, heat it to 97°C, add 11kg of absolute ethanol, 42.5kg of ethylene-vinyl acetate copolymer emulsion, 7.5kg of polyvinyl alcohol, 2.5kg of polyethylene while stirring Alcohol butyral, 2.5kg polyvinylpyrrolidone and 0.4kg phenyl o-hydroxybenzoate were stirred for 25min at a speed of 250r / min, then added 0.08kg bactericide and 0.3kg defoamer, continued to stir for 8min, and after cooling, obtained Water-based adhesive.
preparation example 3
[0043] Preparation example 3 of water-based adhesive: take 25kg of water, heat it to 98°C, add 12kg of absolute ethanol, 45kg of ethylene-vinyl acetate copolymer emulsion, 10kg of polyvinyl alcohol, and 3kg of polyvinyl butyral while stirring , 3kg of polyvinylpyrrolidone and 0.5kg of phenyl o-hydroxybenzoate were stirred for 30min at a speed of 300r / min, then 0.1kg of bactericide and 0.4kg of defoamer were added, and stirring was continued for 10min. After cooling, a water-based adhesive was obtained.
[0044] Preparation example of water-based barrier coating
[0045] The polyvinyl alcohol in the following preparation examples is selected from the PVA100-27 of 1799 provided by Sinopec; the nano-montmorillonite is provided by Shandong Sishui Shengfeng Bentonite Co., Ltd.; the nano-titanium dioxide is provided by Jinan Baolijin Chemical Co., Ltd.; The content of sodium metaphosphate provided by Shandong Zhenhua Industrial Co., Ltd. is 68%; the polyvinyl butyral is selected fro...
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Abstract
The invention relates to the field of packaging materials, in particular to a high-barrier environment-friendly degradable coffee capsule cover film and a preparation method thereof, and solves the problems that a traditional coffee capsule cover film cannot be degraded and causes serious environmental pollution. The high-barrier environment-friendly degradable coffee capsule cover film comprisesa non-woven fabric layer, an adhesive layer arranged on the non-woven fabric layer, a paper base layer arranged on the adhesive layer and a water-based barrier layer arranged on the paper base layer from bottom to top. The non-woven fabric layer is made of polylactic acid non-woven fabric. The adhesive layer is made of a water-based adhesive, and the water-based adhesive is a polyvinyl acetate adhesive; the paper base layer is made of kraft paper; the water-based barrier layer is made of a water-based barrier coating, and the water-based barrier coating is a polyvinyl alcohol coating. The high-barrier environment-friendly degradable coffee capsule cover film has the advantages of being environmentally friendly, degradable and high in water and oxygen barrier property.
Description
technical field [0001] The invention relates to the technical field of packaging materials, more specifically, it relates to a high-barrier environment-friendly degradable coffee capsule cover film and a preparation method thereof. Background technique [0002] The English name of the coffee capsule is coffee capsule, which is similar to the medicinal capsule. It is filled with coffee powder in the cup of the coffee capsule and used in conjunction with the coffee machine. Because the texture of the cup body of the coffee capsule is relatively hard, it can maintain the prototype well at high temperature, so high-pressure water vapor can be injected into the capsule, so that the coffee can completely separate out the rich espresso with coffee crema under the action of pressure . [0003] Coffee capsules are generally made of a plastic cup body and a cover film. In order to ensure that the coffee capsule can still maintain its original shape at high temperature and retain the ...
Claims
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Application Information
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