阅读说明：本技术 一种功能性恒温复合絮片及其制备方法 (Functional constant-temperature composite flocculus and preparation method thereof ) 是由 邱桐 于 2019-08-29 设计创作，主要内容包括：本发明公开了一种功能性恒温复合絮片及其制备方法,由调温纤维和聚乳酸纤维混合而成,所述调温纤维与聚乳酸纤维的混合比20-50％：50-80％；经过聚乳酸纤维的制备、纤维网的制备、热粘合工艺和后处理工艺的步骤,完成功能性恒温复合絮片的制备。本发明通过将调温纤维和聚乳酸纤维进行混合,制备得到复合絮片,兼具了调温纤维和聚乳酸纤维的功效,制备得到的絮片具有抑菌防螨、透气排湿、保暖贴身、绿色环保且阻燃效果佳的功能,同时调温纤维能够有效的对温度和湿度进行调节,控制温度在28-35℃之间。(The invention discloses a functional constant-temperature composite flocculus and a preparation method thereof, wherein the functional constant-temperature composite flocculus is formed by mixing temperature-adjusting fibers and polylactic acid fibers, and the mixing ratio of the temperature-adjusting fibers to the polylactic acid fibers is 20-50%: 50-80%; the preparation of the functional constant-temperature composite flocculus is completed through the steps of polylactic acid fiber preparation, fiber web preparation, thermal bonding process and post-treatment process. According to the invention, the composite flocculus is prepared by mixing the temperature-adjusting fiber and the polylactic acid fiber, has the effects of the temperature-adjusting fiber and the polylactic acid fiber, has the functions of bacteriostasis, mite prevention, ventilation, moisture elimination, warm keeping, close fitting, environmental protection and good flame retardant effect, and meanwhile, the temperature-adjusting fiber can effectively adjust the temperature and the humidity and control the temperature to be between 28 and 35 ℃.)

1. A functional constant temperature composite flocculus is characterized in that: the polylactic acid fiber is formed by mixing temperature-adjusting fibers and polylactic acid fibers, wherein the mixing ratio of the temperature-adjusting fibers to the polylactic acid fibers is 20-50%: 50 to 80 percent.

2. A method of making a functional, constant temperature composite batt according to claim 1, wherein: the preparation of the functional constant-temperature composite flocculus is completed through the steps of polylactic acid fiber preparation, fiber web preparation, thermal bonding process and post-treatment process, and the specific steps are as follows:

(1) preparation of polylactic acid fiber: selecting corn raw materials, adding pure lactic acid bacteria and calcium carbonate for fermentation under the action of a biocatalyst to obtain fermentation liquor; then, after the fermentation liquor is treated, adding sulfuric acid into the fermentation liquor, fully stirring the mixture, filtering the mixture, evaporating and concentrating the filtrate, and filtering the filtrate for the second time to obtain lactic acid; finally, carrying out dehydration cyclization on the obtained pure lactic acid to obtain lactide, and carrying out ring-opening polymerization on the obtained lactide to obtain polylactic acid fiber;

(2) preparation of the fiber web: weighing, opening and wetting temperature-adjusting fibers and polylactic acid fibers according to a mixing ratio, uniformly mixing the two raw materials, then carding by using a roller, cross lapping, and finally sending into a needle machine for needling reinforcement to finish the preparation of a fiber web;

(3) and (3) a thermal bonding process: feeding the fiber web into a hot air drying room for hot air bonding reinforcement;

(4) and (3) post-treatment process: slicing, sterilizing with ultraviolet rays, inspecting quality, rolling and packaging to finish the preparation of the flocculus.

3. The method for preparing a functional constant-temperature composite flocculus according to claim 2, wherein the method comprises the following steps: the biocatalyst in the step (1) is one or a mixture of two of maltase and saccharifying enzyme; the fermentation liquor treatment comprises the steps of neutralizing the fermentation liquor to be slightly alkaline by using lime milk, boiling for sterilization, cooling, filtering, and recrystallizing by using hot water.

4. The method for preparing a functional constant-temperature composite flocculus according to claim 2, wherein the method comprises the following steps: the volume percentage of the sulfuric acid in the step (1) is 40-42%, the filtrate is evaporated and concentrated to obtain industrial pure lactic acid, the industrial pure lactic acid is dissolved by using ether, and is decolored by using activated carbon, and the pure lactic acid is obtained after secondary filtration.

5. The method for preparing a functional constant-temperature composite flocculus according to claim 2, wherein the method comprises the following steps: the polylactic acid fiber obtained in the step (1) has an average relative molecular weight of more than 4800.

6. The method for preparing a functional constant-temperature composite flocculus according to claim 2, wherein the method comprises the following steps: the diameter of the needling in the needling reinforcement in the step (2) is 0.6-0.7mm, and the needling density is 22-30 needles/cm²。

7. The method for preparing a functional constant-temperature composite flocculus according to claim 2, wherein the method comprises the following steps: the temperature of the hot air in the step (3) is 130-150 ℃, and the bonding and reinforcing time is 4-8 min.

Technical Field

The invention relates to the technical field of flocculus, in particular to a functional constant-temperature composite flocculus and a preparation method thereof.

Background

The wadding is a filling material widely used at home and abroad at present, is a flaky and loose filling material of the wadding, is commonly used in the field of textile in particular, and enters thousands of households. Compared with the traditional collodion cotton wadding, the collodion-free cotton wadding reduces the use of adhesives (particularly aldehyde adhesives) in the manufacturing process, increases the bulkiness and improves the defect of poor heat retention.

As one kind of non-woven fabric, the non-glue cotton wadding is a high-grade material for filling, warming, sound-absorbing and filtering materials of cotton quilt, clothes and plush toy, and has the features of high air permeability, high warming performance, light weight, high resilience, ageing resistance, water washing resistance, no mildew, etc.

The existing flocculus is used as winter clothing filler, can only play a role in heat insulation and warm keeping, cannot adjust the temperature, does not need to synchronously and intelligently adjust the temperature and the humidity, does not have the effects of bacteriostasis, mite prevention and flame retardance, and is poor in skin affinity. The common flocculus can not meet the increasingly-growing living household requirement of people.

Disclosure of Invention

The invention aims to provide a functional constant-temperature composite flocculus which has a good skin-friendly effect, is breathable, moisture-removing, antibacterial and anti-mite and can intelligently adjust the temperature and the humidity and a preparation method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: a functional constant-temperature composite flocculus is formed by mixing temperature-adjusting fibers and polylactic acid fibers, wherein the mixing ratio of the temperature-adjusting fibers to the polylactic acid fibers is 20-50%: 50 to 80 percent.

The invention also aims to disclose a preparation method of the functional constant-temperature composite flocculus, which comprises the following steps of preparation of polylactic acid fiber, preparation of a fiber net, a thermal bonding process and a post-treatment process, wherein the preparation method comprises the following specific steps:

(1) preparation of polylactic acid fiber: selecting corn raw materials, adding pure lactic acid bacteria and calcium carbonate for fermentation under the action of a biocatalyst to obtain fermentation liquor; then, after the fermentation liquor is treated, adding sulfuric acid into the fermentation liquor, fully stirring the mixture, filtering the mixture, evaporating and concentrating the filtrate, and filtering the filtrate for the second time to obtain lactic acid; finally, carrying out dehydration cyclization on the obtained pure lactic acid to obtain lactide, and carrying out ring-opening polymerization on the obtained lactide to obtain polylactic acid fiber;

(2) preparation of the fiber web: weighing, opening and wetting temperature-adjusting fibers and polylactic acid fibers according to a mixing ratio, uniformly mixing the two raw materials, then carding by using a roller, cross lapping, and finally sending into a needle machine for needling reinforcement to finish the preparation of a fiber web;

(3) and (3) a thermal bonding process: feeding the fiber web into a hot air drying room for hot air bonding reinforcement;

(4) and (3) post-treatment process: slicing, sterilizing with ultraviolet rays, inspecting quality, rolling and packaging to finish the preparation of the flocculus.

Further, the biocatalyst in the step (1) is one or a mixture of two of maltase and saccharifying enzyme; the fermentation liquor treatment comprises the steps of neutralizing the fermentation liquor to be slightly alkaline by using lime milk, boiling for sterilization, cooling, filtering, and recrystallizing by using hot water.

Further, the volume percentage of the sulfuric acid in the step (1) is 40-42%, the filtrate is evaporated and concentrated to obtain industrial pure lactic acid, the industrial pure lactic acid is dissolved by using ether, and is decolored by using activated carbon, and the pure lactic acid is obtained after secondary filtration.

Further, the polylactic acid fiber obtained in the step (1) has an average relative molecular weight of more than 4800.

Further, the diameter of the needling in the needling reinforcement in the step (2) is 0.6-0.7mm, and the needling density is 22-30 needles/cm²。

Further, the temperature of the hot air in the step (3) is 130-150 ℃, and the bonding and reinforcing time is 4-8 min.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the composite flocculus is prepared by mixing the temperature-adjusting fiber and the polylactic acid fiber, has the effects of the temperature-adjusting fiber and the polylactic acid fiber, has the functions of bacteriostasis, mite prevention, ventilation, moisture elimination, warm keeping, close fitting, environmental protection and good flame retardant effect, and meanwhile, the temperature-adjusting fiber can effectively adjust the temperature and the humidity and control the temperature to be between 28 and 35 ℃.

Drawings

FIG. 1 is a flow chart of the preparation method of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 shows a flow chart of the preparation method of the present invention.