阅读说明：本技术 一种优化纤维性能的化纤单丝生产工艺 (Chemical fiber monofilament production process for optimizing fiber performance ) 是由 贲永宝 贲中华 沈建中 张春勤 于 2021-07-27 设计创作，主要内容包括：本发明涉及一种优化纤维性能的化纤单丝生产工艺,涉及化纤领域,包括以下步骤：湿切片除水、螺杆挤压、冷却纺丝、集束上油、和拉伸定型后即可得到该化纤单丝。该优化纤维性能的化纤单丝生产工艺,避免了因温度的陡然升高导致的熔融液耐热稳定性降低进而导致溶液聚集,影响喷丝效果效果,该工艺升温速度匀速递增,保证了熔融的稳定性,且纺丝通过水浴降温,避免了落丝过程中使用风冷出现黏丝、并丝情况,几个工序的温度均较为平稳,这样工艺条件跳跃性较小,使得织物的最终性能比较稳定,这样得到的化纤单丝更柔软,富有光泽,不易粘黏容易梳理,也便于后续加工；该优化纤维性能的化纤单丝生产工艺,操作简单便捷,可推广使用。(The invention relates to a chemical fiber monofilament production process for optimizing fiber performance, which relates to the field of chemical fibers and comprises the following steps: and (3) dehydrating wet slices, extruding by using a screw, cooling and spinning, bundling and oiling, and stretching and shaping to obtain the chemical fiber monofilament. The chemical fiber monofilament production process for optimizing the fiber performance avoids the problem that the melt heat-resistant stability is reduced due to the abrupt temperature rise, so that the solution aggregation is caused, the spinning effect is influenced, the temperature rise speed of the process is increased at a constant speed, the melting stability is ensured, the spinning is cooled through a water bath, the phenomena of thread adhesion and thread doubling caused by air cooling in the thread falling process are avoided, the temperatures of a plurality of working procedures are stable, the jump of the process conditions is small, the final performance of the fabric is stable, the obtained chemical fiber monofilament is softer, rich in gloss, not easy to adhere, easy to comb and convenient for subsequent processing; the chemical fiber monofilament production process for optimizing the fiber performance is simple and convenient to operate and can be popularized and used.)

1. A chemical fiber monofilament production process for optimizing fiber performance is characterized in that: the method comprises the following steps:

s1: dehydrating the wet slices; drying the wet slices by a steam drying device;

s2: extruding by a screw; putting the dried slices obtained after the S1 treatment into spinning melting equipment for melting treatment;

s3: cooling and spinning; extruding a high-temperature melt obtained by melting S2 from the fine holes of a spinneret plate, wherein the temperature of chemical fiber strands is 150-260 ℃, cooling the extruded melt strands by cooling water flow, and solidifying the cooled melt strands into strands, wherein the water cooling temperature is 20-30 ℃;

s4: bundling and oiling; and bundling and oiling the chemical fiber yarns obtained in the step S3.

S5: stretching and shaping; and (3) stretching and setting the chemical fiber yarns obtained in the step (S4), wherein the stretching multiple is 3-5 times, the stretching medium is hot water bath, and the stretching temperature is 60-100 ℃, so that the chemical fiber filaments are obtained.

2. A process for producing chemical fiber monofilaments for optimizing fiber performance as claimed in claim 1, wherein: and in the S1, the dried slices are heated and melted by a screw extruder, the heating and melting are carried out in a subarea manner and are divided into a feeding area, a melting area, a compression area and a metering area, the temperature of the feeding area is lower than that of the melting area, the compression area and the metering area, and the temperature of the metering area is not lower than that of the melting area and the compression area.

3. The preparation process of the chemical fiber monofilament production process for optimizing fiber performance of claim 1, characterized by comprising the following steps: the melting equipment used in the step S2 is a screw extruder, the temperature of a feeding area of the screw extruder is 60 ℃, the temperature of a melting area is 120-180 ℃, the temperature of a compression area is 130-200 ℃, and the temperature of a metering area is 150-220 ℃.

4. A process for producing chemical fiber monofilaments for optimizing fiber performance as claimed in claim 1, wherein: in the S2 screw extrusion, the temperature of the dried slices is raised to 150-260 ℃ at the temperature raising speed of 2 ℃/min.

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of chemical fibers, in particular to a chemical fiber monofilament production process for optimizing fiber performance.

[ background of the invention ]

Chemical fibers are generally known as chemical fibers, and are fibers made of natural or synthetic high molecular substances, and are classified into artificial fibers made of natural high molecular substances and synthetic fibers made of synthetic high molecular substances according to the source of the raw materials.

The method is characterized in that an important process in chemical fiber treatment during extrusion spinning is adopted, the heating temperature fluctuation of the existing extrusion spinning process is large, the technological operation process is not stable, the final performance of the fabric is unstable, the treated strand silk is uneven in oiling, poor in hand feeling and lack of luster of filaments, and the filaments are large in viscosity during post-treatment, so that the problems of stickiness and difficulty in combing are caused.

[ summary of the invention ]

In order to solve the problems, the invention aims to provide a chemical fiber monofilament production process for optimizing fiber performance, and solves the problems that the heating temperature fluctuation of the existing extrusion spinning process is large, the process operation process is not stable, the final performance of the fabric is unstable, the treated strand silk is not uniformly oiled, the hand feeling is poor, the filaments lack gloss, the filaments show large viscosity during post-treatment, and the filaments can generate stickiness and are not easy to comb.

In order to achieve the purpose, the invention adopts the technical scheme that: a chemical fiber monofilament production process for optimizing fiber performance comprises the following steps:

s1: dehydrating the wet slices; drying the wet slices by a steam drying device;

s2: extruding by a screw; putting the dried slices obtained after the S1 treatment into spinning melting equipment for melting treatment;

s3: cooling and spinning; extruding a high-temperature melt obtained by melting S2 from the fine holes of a spinneret plate, wherein the temperature of chemical fiber strands is 150-260 ℃, cooling the extruded melt strands by cooling water flow, and solidifying the cooled melt strands into strands, wherein the water cooling temperature is 20-30 ℃;

s4: bundling and oiling; and bundling and oiling the chemical fiber yarns obtained in the step S3.

S5: stretching and shaping; and (3) stretching and setting the chemical fiber yarns obtained in the step (S4), wherein the stretching multiple is 3-5 times, the stretching medium is hot water bath, and the stretching temperature is 60-100 ℃, so that the chemical fiber filaments are obtained.

The production process of the chemical fiber monofilament with optimized fiber performance further comprises the following steps: and in the S1, the dried slices are heated and melted by a screw extruder, the heating and melting are carried out in a subarea manner and are divided into a feeding area, a melting area, a compression area and a metering area, the temperature of the feeding area is lower than that of the melting area, the compression area and the metering area, and the temperature of the metering area is not lower than that of the melting area and the compression area.

The production process of the chemical fiber monofilament with optimized fiber performance further comprises the following steps: the melting equipment used in the step S2 is a screw extruder, the temperature of a feeding area of the screw extruder is 60 ℃, the temperature of a melting area is 120-180 ℃, the temperature of a compression area is 130-200 ℃, and the temperature of a metering area is 150-220 ℃.

The production process of the chemical fiber monofilament with optimized fiber performance further comprises the following steps: in the S2 screw extrusion, the temperature of the dried slices is raised to 150-260 ℃ at the temperature raising speed of 2 ℃/min.

Compared with the prior art, the invention has the following beneficial effects:

(1) the chemical fiber monofilament production process for optimizing the fiber performance avoids the problem that the melt heat-resistant stability is reduced due to the abrupt temperature rise, so that the solution aggregation is caused, the spinning effect is influenced, the temperature rise speed of the process is increased at a constant speed, the melting stability is ensured, the spinning is cooled through a water bath, the phenomena of thread adhesion and thread doubling caused by air cooling in the thread falling process are avoided, the temperatures of a plurality of working procedures are stable, the jump of the process conditions is small, the final performance of the fabric is stable, the obtained chemical fiber monofilament is softer, rich in luster, not easy to adhere, easy to comb and convenient to follow-up processing; the chemical fiber monofilament production process for optimizing the fiber performance is simple and convenient to operate and can be popularized and used.

[ detailed description ] embodiments

Example 1

A chemical fiber monofilament production process for optimizing fiber performance comprises the following steps:

s1: dehydrating the wet slices; drying the wet slices by a steam drying device;

s2: extruding by a screw; putting the dried slices obtained after the S1 treatment into spinning melting equipment for melting treatment, wherein the used melting equipment is a screw extruder, the temperature of a feeding area of the screw extruder is 60 ℃, the temperature of a melting area is 120-180 ℃, the temperature of a compression area is 130-200 ℃, the temperature of a metering area is 150-220 ℃, the dried slices in S1 are heated and melted by the screw extruder and are divided into a feeding area, a melting area, a compression area and a metering area, the temperature of the feeding area is lower than that of the melting area, the compression area and the metering area, the temperature of the metering area is not lower than that of the melting area and the compression area, and the temperature of the dried slices is increased to 150-260 ℃ at the temperature increasing speed of 2 ℃/min in the screw extrusion process;

s3: cooling and spinning; extruding a high-temperature melt obtained by melting S2 from the fine holes of a spinneret plate, wherein the temperature of chemical fiber strands is 150-260 ℃, cooling the extruded melt strands by cooling water flow, and solidifying the cooled melt strands into strands, wherein the water cooling temperature is 20-30 ℃;

s4: bundling and oiling; and bundling and oiling the chemical fiber yarns obtained in the step S3.

S5: stretching and shaping; and (3) stretching and setting the chemical fiber yarns obtained in the step (S4), wherein the stretching multiple is 3-5 times, the stretching medium is hot water bath, and the stretching temperature is 60-100 ℃, so that the chemical fiber filaments are obtained.

Example 2

A chemical fiber monofilament production process for optimizing fiber performance comprises the following steps:

s1: dehydrating the wet slices; drying the wet slices by a steam drying device;

s2: extruding by a screw; putting the dried slices obtained after the S1 treatment into spinning melting equipment for melting treatment, wherein the used melting equipment is a screw extruder, the temperature of a feeding area of the screw extruder is 60 ℃, the temperature of a melting area is 120-180 ℃, the temperature of a compression area is 130-200 ℃, the temperature of a metering area is 150-220 ℃, the dried slices in S1 are heated and melted by the screw extruder and are divided into the feeding area, the melting area, the compression area and the metering area, and the temperature of the dried slices is increased to 150-260 ℃ at the temperature increase speed of 7 ℃/min in the screw extrusion process;

s3: cooling and spinning; extruding a high-temperature melt obtained by melting in S2 from the fine holes of a spinneret plate, wherein the temperature of the chemical fiber strands is 150-260 ℃, and solidifying the extruded melt strands into strands after cooling by cold air blowing;

s4: bundling and oiling; and bundling and oiling the chemical fiber yarns obtained in the step S3.

S5: stretching and shaping; and (5) stretching and setting the chemical fiber yarns obtained in the step (S4) by a stretching multiple of 2-3 times to obtain the chemical fiber filaments.

After embodiment 1 compares with embodiment 2, the effect of processing and obtaining chemical fiber silk is excellent in embodiment 1, the reduction of heat-resisting stability of molten liquid caused by the abrupt rise of temperature is avoided, and then solution aggregation is caused, the spinning effect is influenced, the temperature rise speed of the process is increased at a constant speed, the melting stability is ensured, and the spinning is cooled through a water bath, the silk sticking and silk doubling condition caused by air cooling in the silk falling process is avoided, the temperatures of several working procedures are stable, the jumping performance of the process conditions is small, the final performance of the fabric is stable, the chemical fiber silk obtained in the way is softer and rich in luster, is not easy to stick and comb, and the subsequent processing is also convenient.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.