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High-degradation rate diversion layer material and preparing method thereof

A technology of degradation rate and diversion layer, which is applied in medical science, absorbent pads, bandages, etc., can solve the problems of poor diversion performance, difficult to degrade, and difficult processing of water-locking diversion layer, so as to increase air permeability, good The effect of moisture permeability

Active Publication Date: 2017-07-25
CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patented water-locking surface layer adopts straight carded fibers and V-shaped pressing holes, because it is difficult to achieve completely straight fibers in the fiber web, and the V-shaped holes with large upper and smaller holes require offline special punching to complete , so the processing of the water-locking diversion layer is very difficult and the process is complicated
[0008] From the above information, it can be seen that the existing patents related to the diversion layer of sanitary products have the problems of complicated processing technology, difficulty in batching and difficult realization in actual production
In order to overcome the deficiencies of the existing ordinary guide layer, such as poor conduction performance, poor liquid storage capacity, poor instantaneous suction effect, difficult to degrade, complex process and difficult mass production, the present invention provides a guide layer made of polylactic acid fiber. Fluid, breathable, moisture-permeable, instant suction, ecological antibacterial and biodegradable high-degradation rate diversion layer material and preparation method thereof

Method used

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  • High-degradation rate diversion layer material and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] (1) Blend polylactic acid fibers with a fineness of 1.5D and 3-6D respectively according to the ratio of 15-30:85-70. After opening, mixing, carding and air stripping, a grammage of 12- 20g / m 2 The upper fiber web of the airflow stripping process adopts suction type airflow stripping, and the main parameters of the airflow stripping process are: the rotating speed of the main cylinder is 2200-2500r / min, and the speed of the horizontal blower is 950-1250r / min, the air volume in the pipeline is 210-220m 3 / min, the suction fan coefficient is 75-85%, and the negative pressure under the net curtain is 800-920Pa.

[0030] (2) Prepare the antistatic agent solution according to the mass ratio of antistatic agent to water of 4-8:92-96, and use the antistatic agent solution to antistatic the polylactic acid fiber with a fineness of 1.1-1.5D treatment, the spraying amount of the antistatic agent solution is 8-16% of the weight of the polylactic acid fiber with a fineness of 1....

Embodiment 2

[0039] 1. Selection of raw materials

[0040] Hydrophilic polylactic acid fibers with fineness × length of 1.5D × 38mm and 3D × 51mm were selected, and the oil content on the surface of the fibers was 3%, and water-repellent polylactic acid fibers with a fineness of 1.1D × 38mm were selected, and the surface of the fibers contained oil The rate is 5%. The above-mentioned polylactic acid fibers are two-component polylactic acid fibers composed of low-melting point parts and high-melting point parts. The melting point of the high melting point part of the one-component polylactic acid fiber is 155-160 °C, and the arrangement structure composed of the low melting point part and the high melting point part of the two-component polylactic acid fiber is concentric.

[0041] 2. Preparation method

[0042]1) Blend 1.5D×38mm and 3D×51mm polylactic acid fibers at a ratio of 15:85. After opening, mixing, carding and air stripping, the upper fiber web is formed. When using suction air st...

Embodiment 3

[0048] 1. Selection of raw materials

[0049] Hydrophilic polylactic acid fibers with fineness × length of 1.5D × 38mm and 5D × 51mm were selected, and the oil content on the surface of the fibers was 2%. The rate is 3%. The above-mentioned polylactic acid fibers are two-component polylactic acid fibers composed of low-melting point parts and high-melting point parts. The melting point of the high melting point part in the one-component polylactic acid fiber is 160-170 °C, and the arrangement structure composed of the low melting point part and the high melting point part of the two-component polylactic acid fiber is eccentric.

[0050] 2. Preparation method

[0051] 1) 1.5D×38mm and 5D×51mm polylactic acid fibers are blended according to the ratio of 20:80. After opening, mixing, carding and air stripping, the upper fiber web is formed. When using suction air stripping The rotation speed of the main cylinder is 2350r / min, the speed of the horizontal blower is 1050r / min, a...

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Abstract

The invention discloses a high-degradation rate diversion layer material and a preparing method thereof, and relates to the field of disposable hygiene products. The high-degradation rate diversion layer material is prepared through selection of polylactic acid fiber with different hydrophilicity and water repellency properties, different thicknesses and different melting points, and selection of reasonable technological parameters during reinforcing of a hot air oven. The prepared high-degradation rate diversion layer material is composed of an upper fibre web and a lower fibre web, wherein the upper fibre web is a disordered fibre web formed through air laying, the lower fibre web is a carded and directly laid web, and the upper fibre web and the lower fibre web are made into a high-degradation rate diversion layer with high using strength through hot air reinforcing. The technical problem that a diversion layer material is hard to degrade and poor in diversion performance, instant absorptivity and temporary liquid storage capacity, causing side leakage liability and serious reverse osmosis of disposable hygiene products is solved. The diversion layer material has excellent diversion performance, high liquid storage capacity, high instant absorptivity, and a high biodegradation rate.

Description

technical field [0001] The invention relates to the field of disposable sanitary products, in particular to a high-degradation rate guide layer material and a preparation method thereof. Background technique [0002] Disposable hygiene products mainly include sanitary napkins, panty liners, diapers and nursing pads. While they are convenient to use, they also bring a lot of "white pollution" that cannot be ignored. According to the statistics of the Household Paper Professional Committee of China Paper Association It shows that [Jiang Manxia, ​​Sun Jing, Zhang Yulan, etc. my country's disposable sanitary products industry overview and market outlook in 2014 [J]. Paper Information, 2015, (12): 25-29.], the consumption of sanitary napkins in my country in 2014 has reached 77.64 billion pieces per year, 37.2 billion pieces of pads, and more than 25 billion pieces of diapers, of which the consumption of baby diapers increased by 9.6% compared with 2013, and the sales volume of adu...

Claims

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Application Information

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IPC IPC(8): A61F13/15A61F13/537
CPCA61F13/15252A61F13/15577A61F13/15699A61F13/53713
Inventor 钱程
Owner CHANGSHU GOLD SPRING CHEM FIBERS & KNITTINGS
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