Natural-color fuzzy bamboo pulp with high bacteriostatic activity and preparation method thereof

A technology with bacteriostatic activity and natural color is applied in the field of natural fluff bamboo pulp and its preparation, which can solve the problems such as the fact that the fluff pulp pulping method does not solve the fundamental problems, the dry bulkiness of fiber fibers is small, and the ecology and human health are harmed. Eliminate residual pollution, improve water absorption and improve quality

Active Publication Date: 2014-12-10
SICHUAN HUANLONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, regardless of high-chlorine bleaching or low-chlorine bleaching, carcinogens will remain on the bleached fibers, endangering ecology and human health.
[0005] In the prior art, the production method of fluff pulp is to adopt BCTMP, CTMP or CMP pulping methods, and chemical pulping is also used, but the fluff pulp produced by these pulping methods has short and small fibers with low dry bulk, poor water absorption, and filling properties. Not good, and easy to shed hair and powder, heavy dust pollution, poor antibacterial property
Due to quality problems, the use of the above-mentioned fluff pulp is greatly limited, and the pulping method of fluff pulp does not solve the fundamental problem

Method used

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  • Natural-color fuzzy bamboo pulp with high bacteriostatic activity and preparation method thereof
  • Natural-color fuzzy bamboo pulp with high bacteriostatic activity and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of preparation method of the natural color fluffy bamboo pulp with high antibacterial activity, it may further comprise the steps:

[0027] S1. Raw material disintegration: select Cizhu fiber as raw material, and dry disintegrate the raw material into fiber powder with a length of 2 cm;

[0028] S2. Cooking: Mix the fiber powder and cooking liquid evenly at a material-to-liquid ratio of 1:2.5, then add them to the cooking pot for cooking treatment, heat up to 135°C for the first time, keep warm for 110 minutes, and then perform a small deflation for 15 minutes, the second time The heating condition is to raise the temperature to 160° C. within 70 minutes, keep the temperature for 60 minutes, and finally perform a large deflation to obtain low-hardness bamboo pulp with a potassium permanganate value of 6 g / L; wherein, the cooking liquid is 20% KOH;

[0029] S3. Washing: including rough selection by vibrating screen, extraction of black liquor by vacu...

Embodiment 2

[0032] Embodiment 2: a kind of preparation method of the natural color fluffy bamboo pulp with high antibacterial activity, it may further comprise the steps:

[0033] S1. Raw material disintegration: choose yellow bamboo fiber as raw material, and dry disintegrate the raw material into fiber powder with a length of 4 cm;

[0034]S2. Cooking: Mix the fiber powder and cooking liquid evenly at a material-to-liquid ratio of 1:4, then add them to the cooking pot for cooking treatment, heat up to 150°C for the first time, keep warm for 140 minutes, and then perform a small deflation for 25 minutes, and the second time The heating condition is to raise the temperature to 175° C. within 90 minutes, keep the temperature for 80 minutes, and finally perform a large outgassing to obtain low-hardness bamboo pulp with a potassium permanganate value of 6 g / L; wherein, the cooking liquid is 24% KOH;

[0035] S3. Washing: including rough selection by vibrating screen, extraction of black liqu...

Embodiment 3

[0038] Embodiment 3: a kind of preparation method of the natural color fluffy bamboo pulp with high antibacterial activity, it may further comprise the steps:

[0039] S1. Raw material disintegration: choose Cizhu fiber as raw material, dry disintegrate the raw material into fiber powder with a length of 2-4cm;

[0040] S2. Cooking: mix the fiber powder and cooking liquid evenly at a material-to-liquid ratio of 1:3, then add them to the cooking pot for cooking treatment, heat up to 140°C for the first time, keep warm for 125 minutes, and then perform small deflation for 18 minutes, and second time The heating condition is to raise the temperature to 168° C. within 80 minutes, keep the temperature for 70 minutes, and finally perform a large outgassing to obtain low-hardness bamboo pulp with a potassium permanganate value of 6 g / L; wherein, the cooking liquid is 22% KOH;

[0041] S3. Washing: including rough selection by vibrating screen, extraction of black liquor by vacuum was...

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Abstract

The invention discloses natural-color fuzzy bamboo pulp with high bacteriostatic activity. The natural-color fuzzy bamboo pulp is 25-30%ISO (International Standardization Organization) in whiteness degree, is 0.25-0.35kPa m<2>/g in bursting strength, is 17-21cm<3>/g in dry filling power, is 6-6.5s in water absorption time, is 8.9-9.8g/g in water absorption capacity, is 0.86-3.79mm in average fiber length and is 0.009-0.022mm in average fiber width. A preparation method of the natural-color fuzzy bamboo pulp comprises the steps of pulping raw materials, cooking, washing, modifying and drying, wherein the washing step comprises coarse selection by a vibrating screen, black liquid extraction by a vacuum pulp washer, fine selection by a pressure screen, dedusting by a residue removal and pulp washing by a vacuum pulp washing machine. The natural-color fuzzy bamboo pulp has long fiber length, high flexibility and good water-absorbing ability and water-retaining property, has soft and fluffy texture and strong antibacterial property, can keep the 100% natural color of the bamboo fiber and can remarkably improve the quality of the down-stream products; and the preparation method has the characteristics of simplicity in operation, convenience in production, low cost and environment protection.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and in particular relates to natural-color fluffy bamboo pulp with high antibacterial activity and a preparation method thereof. Background technique [0002] Fluff pulp is used as pulp for absorbing liquid medium. It wraps polymer water-absorbing resin to form the absorbent layer of absorbent sanitary products. It has good water absorption performance and its structure remains unchanged after absorbing liquid. The necessary raw materials for the production of various absorbent sanitary products, such as sanitary napkins, sanitary pads, diapers, disposable nursing mattresses, etc. [0003] At present, the fluff pulp is mainly bleached coniferous wood fiber, but my country's forest resources are scarce, and the fluff pulp used in sanitary products in my country mainly relies on imports, and the annual demand is increasing day by day, while the global supply of wood raw materials is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/12D21C3/02D21H17/67D21H21/10D21H17/24D21H21/14
Inventor 沈根莲周骏朱清云范武毅
Owner SICHUAN HUANLONG NEW MATERIAL
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