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Environment-friendly straw paper, preparation method thereof and paper straw processing technology

A processing technology and environment-friendly technology, applied in mechanical processing/deformation, papermaking, paper coating, etc., can solve problems such as poor experience, increased recycling costs, difficult microbial degradation of wet strength agents, etc., to achieve good flatness and barrier properties , Improve the effect of hiding and good barrier properties

Inactive Publication Date: 2021-07-23
LEAFPAK CO USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current production process of straw paper, the residue of chloropropanol is a big food safety risk;
[0005] 3. Due to the addition of a large amount of wet strength agent, the recycling performance of the straw after use is challenged (it cannot be disintegrated in the conventional hydropulper disintegration process, and a special wet strength dissociating agent needs to be added, which increases recycling costs and increases Increase the difficulty of recycling); due to the addition of wet strength agent, it also increases the difficulty of degradation of straw paper after use (wet strength agent itself is difficult to microbial degradation);
[0006] 4. This kind of straw paper can only use glue bonding technology when producing and processing straws. There is no water-resistant layer on the inside and outside of the straw, and the liquid directly contacts the surface of the base paper. When it is liquid, it is easy to absorb the liquid and become soft, affecting the user experience;
[0007] 5. This kind of straw paper can only use glue + three-layer or multi-layer straw paper winding process in the process of processing straws. The thickness of the straw wall is too large, and the experience is not good, especially when consumers bite the straw. sense of difference

Method used

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  • Environment-friendly straw paper, preparation method thereof and paper straw processing technology
  • Environment-friendly straw paper, preparation method thereof and paper straw processing technology
  • Environment-friendly straw paper, preparation method thereof and paper straw processing technology

Examples

Experimental program
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preparation example Construction

[0039] A preparation method of environment-friendly straw paper, comprising the following steps,

[0040] First, configure the paint. The paint includes primer paint and top coat paint, and the primer paint is divided into front primer and back primer, and the top coat is divided into front paint and back paint;

[0041] Second, use the coating process for coating, firstly carry out the front primer on the front of the base paper, dry, then carry out the front surface coating, dry, carry out the back primer, dry, carry out the back surface coating, dry, and the drying temperature is ≥ 90 ℃.

[0042] Coating adopts at least one of curtain coating, air knife coating, metering rod coating, knife coating and flexo printing. The preferred coating method can be curtain coating, air knife coating, metering rod.

[0043] The coating process includes one of an online coating process and an off-machine coating process. On-line coating processing technology: streaming system-wire sect...

Embodiment 1

[0053] Front primer: paint formula: China clay 100, latex 80, dispersant 0.2, NaOH 0.3, water resistance agent 0.4, carboxymethyl cellulose 0.8, lubricant 0.5, defoamer 0.1, rheological agent 0.2; total coating amount 6.0g / m2, one coat, drying temperature 90°C.

[0054] Front surface coating: coating formula: acrylate modified polymer 90%, inorganic matter 10%; total coating weight 7.2g / m2, two coatings, drying temperature 110 ℃.

[0055] Back primer: paint formula: China clay 100, latex 80, dispersant 0.2, NaOH 0.3, water resistance agent 0.4, carboxymethyl cellulose 0.8, lubricant 0.5, defoamer 0.1, rheological agent 0.2; total coating amount 6.0g / m2, one coat, drying temperature 90°C.

[0056] Back surface coating: paint formula: acrylate modified polymer 100%, inorganic matter 0%; total coating amount 4.6g / m2, two coatings, drying temperature 120°C.

Embodiment 2

[0058] Front primer: paint formula: China clay 100, latex 90, dispersant 0.2, NaOH 0.3, water resistance agent 0.4, carboxymethyl cellulose 0.8, lubricant 0.5, defoamer 0.1, rheological agent 0.2; total coating amount 6.0g / m 2 , Once coated, the drying temperature is 100°C.

[0059] Front surface coating: coating formula: 90% acrylate modified polymer, 10% inorganic matter; two coatings, total coating weight 6.8g / m 2 ,, The drying temperature is 100°C.

[0060] Back primer: paint formula: china clay 100, latex 90, dispersant 0.2, NaOH 0.3, water resistance agent 0.4, carboxymethyl cellulose 0.8, lubricant 0.5, defoamer 0.1, rheological agent 0.2; total coating amount 6.0g / m 2 , Once coated, the drying temperature is 100°C.

[0061] Back surface coating: paint formula: 90% acrylate modified polymer, 10% inorganic matter; total coating weight 7.2g / m 2 , twice coating, drying temperature 110 ℃.

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Abstract

The invention discloses environment-friendly straw paper, a preparation method thereof and a paper straw processing technology. The straw paper comprises a fiber layer, barrier coating layers are arranged on the two sides of the fiber layer respectively, a heat-seal coating layer is arranged on the outer side of each barrier coating layer, and the heat-seal coating layers can be bonded in a heat-seal mode. The wet strength agent does not need to be added, index parameters all meet the requirements of food packaging paper, through optimization of the fiber matching structure, control of moisture and control of the stiffness of raw paper, the paperboard can meet the process requirements that small-meandering-diameter rolling can be achieved, and the paperboard has enough flexibility and can be rolled into a pipe shape, the index of water resistance reaches that the water absorption value is smaller than or equal to 10 g / m < 2 > within 30 minutes, the straw paper can maintain good stiffness after being soaked for a long time, and the straw paper can be completely recycled, degraded, repulped and composted; in addition, the straw paper also has the characteristics of high bulkiness and high stiffness, realizes two purposes of zero plastic and light weight, and has excellent qualities of good barrier property, heat sealability, microwave heating and the like.

Description

technical field [0001] The invention relates to the field of paper production, in particular to an environment-friendly straw paper, a preparation method thereof, and a paper straw processing technology. Background technique [0002] With the continuous improvement of environmental awareness, especially the ban on the use of non-degradable disposable plastic straws in the national catering industry. Therefore, the paper straw came into being, and the paper straw was formed around the straw paper. At present, the mainstream straw paper on the market is mainly heavy-sized base paper. In order to improve its liquid resistance in the production process, a certain amount of wet strength agent needs to be added. The amount of wet strength agent added depends on the final use requirements of the straw paper. The difference is that the general amount of paper per ton is 10-20 kg (based on liquid wet strength agent, 15% solid content). This kind of straw paper mainly has the followi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/84D21H19/82D21H19/40D21H19/52D21H19/44D21H19/14D21H19/20D21H21/14D21H21/16B31F7/00
CPCD21H19/84D21H19/826D21H19/40D21H19/52D21H19/44D21H19/14D21H19/20D21H21/16D21H21/14B31F7/004A47G21/18D21H19/56D21H19/58D21H19/82D21H27/10B32B1/08B32B7/08B32B27/06B32B27/302B32B27/308B32B29/02B32B29/06D21H23/22D21H23/30
Inventor 戴玲
Owner LEAFPAK CO USA INC
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