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Preparation method of waterproof paper fast food box

A fast food box and paper-based technology, which is applied in paper, papermaking, packaging paper, etc., can solve the problems of poor waterproof effect and high melting point, and achieve the effects of improving smoothness, high tensile strength, and improving viscosity stability

Inactive Publication Date: 2019-02-15
安徽省新兴纸业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, plastic has the characteristics of low toxicity, high melting point, strong plasticity, easy production and relatively low cost, so it has become the mainstream to manufacture disposable paper fast food boxes, but at present, paper fast food boxes have poor waterproof effect. Technical issues need to be resolved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a waterproof paper snack box, comprising the steps of:

[0019] S1. Stir 4kg of carrageenan and 40kg of absolute ethanol for 15min at a stirring temperature of 80°C, add 0.2kg of a 46wt% hydrogen peroxide solution and stir for 20min, and use a 24wt% sodium hydroxide solution to adjust the pH of the system to 8.2-8.8. Insulate for 5 hours, lower to room temperature, use hydrochloric acid to adjust the pH of the system to neutral, add 8 kg of styrene and stir for 1 hour under the protection of nitrogen, the stirring temperature is 98 ° C, add 0.02 kg of dibenzoyl peroxide and stir for 4 hours, cool down, filter, wash , drying to obtain material a;

[0020] S2, 120kg Chinese fir pulp, 40kg mulberry pulp, and 24kg beech pulp are disintegrated with a pulper, and the grinding disc is beaten to a slurry with a concentration of 6.5wt% and a beating degree of 25°SR, adding 3kg hydroxyethyl cellulose, 1kg Xanthan gum and 1 kg of alginic acid were stirred ...

Embodiment 2

[0023] A preparation method of a waterproof paper snack box, comprising the steps of:

[0024] S1. Stir 12kg of carrageenan and 30kg of absolute ethanol for 24min at a stirring temperature of 72°C, add 1kg of a 42wt% hydrogen peroxide solution and stir for 40min, use a 15wt% sodium hydroxide solution to adjust the pH of the system to 8.2-8.8, and keep warm 10h, lower to room temperature, use hydrochloric acid to adjust the pH of the system to neutral, add 2kg of styrene and stir for 2h under the protection of nitrogen, the stirring temperature is 92°C, add 0.06kg of dibenzoyl peroxide and stir for 1h, cool down, filter, wash, Dry to obtain material a;

[0025] S2, 160kg fir pulp, 30kg mulberry pulp, and 35kg beech pulp are disintegrated by a pulper, and the grinding disc is beaten to a slurry with a concentration of 4.5wt% and a beating degree of 30°SR, adding 1kg hydroxyethyl cellulose, 2kg Xanthan gum and 0.4kg alginic acid were stirred for 10min at a stirring speed of 120r...

Embodiment 3

[0028] A preparation method of a waterproof paper snack box, comprising the steps of:

[0029] S1. Stir 6kg of carrageenan and 37kg of absolute ethanol for 18min at a stirring temperature of 78°C, add 0.4kg of 45wt% hydrogen peroxide solution and stir for 25min, and use a 22wt% sodium hydroxide solution to adjust the pH of the system to 8.2-8.8. Insulate for 6 hours, lower to room temperature, use hydrochloric acid to adjust the pH of the system to neutral, add 6 kg of styrene and stir for 1.2 hours under nitrogen protection, the stirring temperature is 96 ° C, add 0.03 kg of dibenzoyl peroxide and stir for 3 hours, cool down, filter, washing and drying to obtain material a;

[0030] S2, 130kg fir pulp, 37kg mulberry pulp, and 28kg beech pulp are disintegrated by a pulper, and the grinding disc is beaten to a slurry with a concentration of 6wt% and a beating degree of 26°SR, adding 2.5kg hydroxyethyl cellulose, 1.2 kg xanthan gum and 0.8 kg alginic acid were stirred for 6 min...

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Abstract

The invention discloses a preparation method of a waterproof paper fast food box. The preparation method comprises the following steps: stirring carrageenan and anhydrous ethanol, adding a hydrogen peroxide solution, stirring, adjusting the pH value of the system to 8.2-8.8, preserving the temperature, cooling, adjusting the pH value of the system to be neutral, adding styrene under the protectionof nitrogen, stirring, adding dibenzoyl peroxide, stirring, cooling, filtering, washing and drying, so as to obtain a material a; disintegrating fir pulp, mulberry pulp and zelkova schneideriana pulpwith a pulper, pulping with a millstone, adding hydroxyethyl cellulose, xanthan gum and alginic acid into the mixed pulp, and stirring, so as to obtain a material b; uniformly mixing the material b,the material a, sodium carbonate, a stabilizer, a lubricating agent and stone powder, and moulding, so as to obtain the waterproof paper fast food box. The obtained paper fast food box is extremely high in tensile strength, and the smoothness and the waterproofness of the fast food box can be obviously improved; and in addition, the uniformity of a paper surface and the brightness of the color canbe improved, and the fast food box is safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of paper snack boxes, in particular to a preparation method of a waterproof paper snack box. Background technique [0002] Disposable fast food boxes have changed from foam lunch boxes to environmentally friendly lunch boxes. The original foam lunch boxes were eliminated due to their inability to withstand high temperatures and the damage to the environment caused by the production process. Plastic lunch boxes and paper lunch boxes have been replaced. Among them, plastic has the characteristics of low toxicity, high melting point, strong plasticity, easy production and relatively low cost, so it has become the mainstream to manufacture disposable paper fast food boxes, but at present, paper fast food boxes have poor waterproof effect. Technical issues need to be resolved urgently. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H15/10D21H11/00D21H17/26D21H17/24D21H17/14D21H17/06D21H17/63D21H17/21D21H17/04D21H17/07D21H17/67D21H21/06D21H21/16D21H21/14
CPCD21H11/00D21H15/10D21H17/04D21H17/06D21H17/07D21H17/14D21H17/21D21H17/24D21H17/26D21H17/63D21H17/67D21H17/675D21H21/06D21H21/14D21H21/16D21H27/10
Inventor 徐江河
Owner 安徽省新兴纸业有限责任公司
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