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Medical crepe wrapping paper and production process thereof

A technology of wrapping paper and papermaking process, applied in the direction of wrapping paper, wrapping paper, packaging, etc., to achieve the effect of facilitating the hand feel and the sagging and covering of the desktop

Inactive Publication Date: 2012-04-04
ZHEJIANG XINFENG SPECIAL PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, medical crepe wrapping paper is still a technical blank in China

Method used

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] ⑴ Select 70% bleached softwood pulp, 20% bleached hardwood pulp, and 10% HPZ special fiber, and make a slurry with a concentration of 4.0% through a hydropulper, and beat it through a ￠450 disc mill to obtain a concentration of 3.5 %, pulp with a percussion degree of 40-43 oSR and a wet weight of 10-12g;

[0024] (2) Add 3.5% PAE wet strength agent, 4.5% AKD sizing agent, and 0.3% softener to the above slurry to make paper material for paper machine making;

[0025] (3) Wet creping is carried out in a cylinder when the dryness of the wet paper sheet is 36% after fourdrinier or inclined wire paper machine wire forming and dehydration after pressing. , the speed ratio of wrinkling cylinder and drying cylinder is 1.13:1;

[0026] ⑷The indicators of the medical crepe wrapping paper produced under the above conditions are: quantitative 59g / m2, longitudinal tensile strength 1.33KN / m, wet tensile strength 0.4KN / m, hydrophobic penetration time 21S, softness 497mN, The paper h...

Embodiment 2

[0028] ⑴ Select 70% bleached softwood pulp, 15% bleached hardwood pulp, and 15% HPZ special fiber, and make a pulp with a concentration of 4.0% through a hydropulper, and beat it through a ￠450 disc mill to make a pulp with a concentration of 3.5 %, pulp with a percussion degree of 43-45 oSR and a wet weight of 11-13g;

[0029] (2) Add 3.5% PAE wet strength agent, 4.5% AKD sizing agent, 0.5% softener, and 1.5% water-resistant agent to the above slurry to make paper material for paper machine making;

[0030] ⑶ After the fourdrinier or inclined wire paper machine is formed and dehydrated by pressing, wet creping is carried out in a cylinder when the wet paper sheet dryness is 38%. The tangent angle between the creping scraper and the cylinder surface is 45o, and the blade angle 90o, the speed ratio of wrinkling cylinder and drying cylinder is 1.15:1;

[0031] ⑷The indicators of the medical crepe wrapping paper produced under the above conditions are: quantitative 60g / m2, longi...

Embodiment 3

[0033] ⑴ Select 65% bleached softwood pulp, 20% bleached hardwood pulp, and 15% HPZ special fiber, and make a pulp with a concentration of 4.0% through a hydropulper, and beat it through a ￠450 disc mill to make a pulp with a concentration of 3.5 %, pulp with a percussion degree of 42-44 oSR and a wet weight of 9-11g;

[0034] (2) Add 3.5% PAE wet strength agent, 4.0% AKD sizing agent, and 0.3% softener to the above slurry to make paper material for paper machine making;

[0035] ⑶ After the fourdrinier or inclined wire paper machine is formed and dehydrated by pressing, wet creping is carried out in a cylinder when the dryness of the wet paper sheet is 36%. 45o, the speed ratio of wrinkling cylinder and drying cylinder is 1.13:1;

[0036] (4) Spray water-repellent agent in the drying group cylinder according to the coating amount of 2.5% per ton of paper;

[0037] ⑸The indicators of the medical crepe wrapping paper produced under the above conditions are: basis weight 58g / m...

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Abstract

The invention relates to medical crepe wrapping paper. The preparation process for the medical crepe wrapping paper comprises: mainly adopting bleached softwood pulp, bleached hardwood pulp and HPZ special fiber according to a certain ratio; carrying out treatments of repulping and beating for the materials, wherein the repulping treatment is performed by a hydrapulper, the beating treatment is performed by a disc attrition mill; then adding assistant materials of a wet strength agent, a sizing agent, a softening agent, a water repellent agent and the like; carrying out forming and pressing dewatering at the mesh part of a long mesh multi-cylinder paper machine or an inclined mesh multi-cylinder paper machine; carrying out wet creping in the one cylinder when the dryness of the wet paper sheet is 30-45%, wherein the angle formed by a creping scraper and the tangent line of the cylinder surface is 30-45 DEG, the blade angle of the creping scraper close to the cylinder surface is 35-90 DEG, a speed ratio of a creping drying cylinder to a heating drying unit cylinder is 1.1-1.15:1; transferring the creped wet paper to the drying unit cylinder to carry out drying; carrying out reeling by a reeler; carrying out rewinding cutting to obtain the medical crepe wrapping paper product. According to the present invention, the wet creping treatment is performed when the dryness of the paper sheet is 30-45%, such that the hydrogen bond combination force between the fibers, and the chemical bond combination force of the wet strength agent and other thermosetting resins are not formed, meanwhile, the strength of the wet paper sheet is low, the crepe formed by collision with the creping scraper is uniform, such that bad phenomena such as paper scraps, paper powder and the like can not be generated.

Description

[0001] technical field [0002] [0003] The present invention relates to a manufacturing method and production process of medical crepe wrapping paper, especially belongs to the papermaking process of fourdrinier or inclined wire paper machines, through the selection of fiber types and proportions, the optimization of the ratio of papermaking auxiliary materials and the use of wet wrinkling Process for producing medical crepe wrapping paper. [0004] Background technique [0005] [0006] The purpose of the packaging of hospital recycled equipment is to ensure that the sterilized sterile equipment is stored in a sterile state, aseptically delivered, and remains sterile before opening the package for use. Recycled devices such as those used in hospital operating rooms. At present, the final packaging of recycled equipment in domestic hospitals is cotton packaging. At the same time, recycling, rinsing, drying, sorting, transportation, and repeated disinfection of expired ...

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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IPC IPC(8): D21H13/00D21H27/10
Inventor 程益民包涛陈彩虹胡素仙罗春峰
Owner ZHEJIANG XINFENG SPECIAL PAPER
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