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High-wet-intensity leather paper and preparation method and application thereof

A leather-like, high-humidity technology, applied in the direction of paper, papermaking, paper coating, etc., to achieve the effect of high strength, low raw material composition, and good compression resilience

Active Publication Date: 2015-08-19
杭州特种纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because after the sewing process of denim clothing is completed, a stonewashing process is required, which requires that the labels on the clothes are not only wear-resistant but also maintain sufficient wet strength during the stonewashing process; During the stonewashing process of denim clothing, it needs to be heated and turned over continuously. The label and the clothing have to bear a lot of friction and rubbing. Therefore, the paper used must have sufficient toughness and strength in a wet state. Now the common Kraft cardboard is difficult to meet this requirement

Method used

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  • High-wet-intensity leather paper and preparation method and application thereof
  • High-wet-intensity leather paper and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high wet strength imitation leather paper, calculated by mass percentage, is prepared from the following components:

[0036] Softwood pulp 30%

[0037] Cotton pulp 48%

[0038] Urea-formaldehyde resin 1%

[0039] Sodium carboxymethyl cellulose 0.5%

[0040] Waterborne Polyurethane Emulsion 18.5%

[0041] Ceramic fiber 2%

[0042] A kind of preparation method of high wet strength imitation leather paper:

[0043] Step 1. Select 30% of coniferous wood pulp and disintegrate it in a vertical hydraulic pulper for 4 minutes, then add 48% of cotton pulp in a mass ratio and disintegrate it for 6 minutes, and mix evenly to form pulp;

[0044] Step 2, adding 1% urea-formaldehyde resin to the pulp slurry prepared in step 1, stirring evenly, beating, beating in the Valley beater, the beating degree range is controlled at 30°SR, and the average fiber length of the pulp is 1.3mm;

[0045] Step 3: adding 0.5% sodium carboxymethyl cellulose to the mixed pulp slurry prepa...

Embodiment 2

[0051] A high wet strength imitation leather paper, calculated by mass percentage, is prepared from the following components:

[0052] Softwood pulp 35%

[0053] Hemp pulp 44%

[0054] Melamine formaldehyde 1.5%

[0055] Sodium carboxymethyl cellulose 0.5%

[0056] Styrene Acrylic Emulsion 16%

[0057] Ceramic fiber 3%

[0058] A kind of preparation method of high wet strength imitation leather paper:

[0059] Step 1. Select 35% of coniferous wood pulp and disintegrate it in a vertical hydraulic pulper for 4 minutes, then add short fiber hemp pulp in a mass ratio of 44% and disintegrate it for 6 minutes, and mix evenly to form pulp;

[0060] Step 2, adding 1.5% melamine formaldehyde to the pulp slurry prepared in step 1, stirring evenly, beating, beating in the Valley beater, the beating degree range is controlled at 38°SR, and the average fiber length of the pulp is 1.8mm;

[0061] Step 3, adding 0.5% sodium carboxymethyl cellulose to the mixed pulp slurry prepared...

Embodiment 3

[0067] A high wet strength imitation leather paper, calculated by mass percentage, is prepared from the following components:

[0068] Softwood pulp 32%

[0069] Cotton pulp 48%

[0070] Epichlorohydrin 1.5%

[0071] Sodium carboxymethyl cellulose 0.6%

[0072] Styrene Acrylic Emulsion 15.5%

[0073] Ceramic fiber 2.4%

[0074] A kind of preparation method of high wet strength imitation leather paper:

[0075] Step 1, selection and proportioning of pulp raw materials: 48% of cotton pulp and 32% of softwood pulp by weight percentage, uniformly mixed;

[0076] Step 2, adding 1.5% epichlorohydrin resin to the pulp slurry prepared in step 1, stirring evenly, beating, and beating degree;

[0077] Step 1. Select 32% of long-fiber wood pulp coniferous wood pulp and disintegrate it in a vertical hydraulic pulper for 4 minutes, then add 48% of cotton pulp in a mass ratio and disintegrate it for 6 minutes, and mix evenly to form pulp;

[0078] Step 2. Add the wet strength ag...

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Abstract

The invention relates to high-wet-intensity leather paper and a preparation method thereof. The leather paper is made of main raw materials of one of cotton pulp or hemp pulp and needlebush pump, and sodium carboxymethylcellulose, wet strength agents and emulsion are added. Ceramic fibers are included in the emulsion, coating is performed through an impregnation method to perform surface sizing after body paper is made and dried, the sized paper is dried at the temperature ranging from 120 DEG C to 135 DEG C at the ordinary pressure, and accordingly, the high-wet-intensity leather paper is obtained. The high-wet-intensity leather paper is high in wet intensity and can be wetted according to a standard washing-resistant test method and does not layer by rubbing for 50 times hard with hands, and the leather paper is widely applied to the fields of clothing labels, tags and the like and particularly applicable to labels in no need of integrating the labels with jeans.

Description

technical field [0001] The invention relates to the field of paper production, in particular to a high wet strength imitation leather paper and a preparation method thereof. Background technique [0002] High humidity strength imitation leather paper, commonly known as washable kraft paper, is a high-strength, washable, printable, printable, laminated, coated, and silk-screened low-carbon environmentally friendly material. It feels comfortable and close to leather. It is an ideal material suitable for internal or external use of products. It is widely used in clothing signs, hang tags, leather tags, business cards, high-end leather bags, belts, hats, handbags, notepad covers, shoe materials, and high-end product decoration. , stationery, art packaging and other fields. Along with increasing day by day of people's living demand, all the clothes of modern industrialized production need to carry the label brand name of clothing, especially denim clothing series, what need is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H15/10D21H21/20D21H17/26D21H23/32D21H19/40D21H19/42
Inventor 吴安波
Owner 杭州特种纸业有限公司
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