阅读说明：本技术 一种3n水刺无纺布加工工艺 (3N spunlace non-woven fabric processing technology ) 是由 王旗 唐新民 张小栓 房涛荣 李凯 华文煜 于 2020-05-13 设计创作，主要内容包括：本发明涉及墙布生产方法技术领域,且公开了一种3N水刺无纺布加工工艺,包括印刷处理、防水层处理和压纹处理该。3N水刺无纺布加工工艺,本发明采用丙纶或涤纶为基料,辅以科学配比的配料,加工制得的无纺布在保证强度以及韧性要求的基础上,具有较高的防水性能和透气性能,同时,本发明以改性聚乙烯醇作为无纺布的粘合剂,该粘合剂透气、粘合性能高,能够增强无纺布的透气性、韧性和防水性,本发明的加工工艺简单,各部分生产工艺步骤详细,适用多种型号的生产机器使用,对生产设备的要求不高,适宜大规模生产。(The invention relates to the technical field of wall cloth production methods, and discloses a 3N spunlace non-woven fabric processing technology which comprises printing treatment, waterproof layer treatment and embossing treatment. The invention relates to a processing technology of 3N spunlace non-woven fabric, which adopts polypropylene fiber or terylene as a base material and is supplemented with ingredients with scientific proportion, the processed non-woven fabric has higher waterproof performance and air permeability on the basis of ensuring the strength and toughness requirements, meanwhile, the invention uses modified polyvinyl alcohol as a binding agent of the non-woven fabric, the binding agent has high air permeability and binding performance, and can enhance the air permeability, toughness and waterproofness of the non-woven fabric.)

1. The 3N spunlace non-woven fabric processing technology comprises printing treatment, waterproof layer treatment and embossing treatment, and is characterized in that:

(1) the processing technology for printing the 3N spunlace non-woven fabric comprises the following steps:

s1, melt blending: adding 0-10% of environment-friendly polypropylene fiber flame-retardant master batch by mass into polypropylene fiber or polyester processing raw materials, mixing, and performing high-temperature melt extrusion by using a large screw;

s3, spinning: the raw materials are on a spinning machine of a spinning system, the melt enters a spinning assembly firstly, is filtered again and uniformly pressed, is sprayed out in a trickle shape through a spinneret plate, and enters a quenching area to be cooled and solidified into filaments;

s2, drafting and web forming: leading the tows into a drafting nozzle to be drafted at high speed by compressed air, receiving fibers fed by a cotton feeder according to a set flow by a carding machine, carding the fibers into a net-shaped thin layer, lapping the net-shaped thin layer by a lapping machine for 8 to 9 layers to and fro, wherein the thickness of a cotton net is 35cm to 40cm, then uniformly paving the net-shaped thin layer on a conveying net, and laying the cotton net into a net;

s4, bonding: adding the modified polyvinyl alcohol into a charging barrel of a spraying device, uniformly spraying an adhesive between two layers of non-woven fabric fiber webs through a spraying process, vibrating the non-woven fabric fiber webs up and down to enable the adhesive to quickly and uniformly permeate into the non-woven fabric fiber webs, and conveying the non-woven fabric fiber webs forwards to a spunlace area;

s5, low-temperature drying: pre-wetting the mesh surface, then carrying out multi-channel spunlace and pattern spunlace on the front surface and the back surface, pre-drying, then respectively forming cloth by a pre-needling machine, a lower needling machine and an upper main needling machine, sending the fiber web into a hemming area of a hemming machine, hemming and reinforcing the hemming in the hemming area through the matching of a groove needle and a curved needle to prepare the required non-woven lining cloth,

s6, processing: and cutting the non-woven fabric according to the shape, laminating the cut and formed non-woven fabric, drying, rolling and packaging the shaped non-woven fabric, and transporting the non-woven fabric to a warehouse for storage.

(2) And the waterproof layer processing technology of the 3N spunlace non-woven fabric comprises the following steps: the waterproof layer is a modified polyvinyl alcohol raw material

S1, adding the cellulose nanocrystal, the carboxymethyl cellulose and the polyvinyl alcohol into a reaction kettle, stirring and reacting for 0.8-1h at 120 ℃, and cooling to 80-85 ℃.

And S2, adding neodecanoic acid glycidyl ester, continuously stirring for reaction for 0.4-0.6h, adding aminoethyl piperazine and triethanolamine, and fully and uniformly mixing to obtain the modified polyvinyl alcohol.

(3) The embossing processing technology of the 3N spunlace non-woven fabric comprises the following steps:

s1, engraving concave patterns on the surface of the embossing roller;

s2, passing the foam slurry through a roller;

s3, scraping redundant foaming slurry on the surface of the embossing roll except the concave patterns;

s4, transferring the foaming slurry in the concave patterns on the embossing roll to the non-woven base fabric through a press roll;

s5, baking the foaming slurry on the non-woven base fabric to be semi-dry;

s6, carrying out hot-pressing foaming on the non-woven fabric through a roller, wherein the roller consists of a lower roller and an upper roller, the lower roller is a rubber roller, and the upper roller is a steel roller.

2. A 3N spunlace nonwoven fabric processing process according to claim 1, characterized in that: the flame retardant of the polypropylene spun-bonded non-woven fabric can adopt magnesium hydroxide, aluminum hydroxide, phosphoric acid triester, ammonium polyphosphate, octabromoether, triphenyl phosphate, hexabromocyclododecane, melamine pyrophosphate, zinc borate, decabromodiphenylethane, coated red phosphorus and triisocyanurate; flame retardants available for the terylene spunbonded nonwoven fabric include tris (2, 3-dichloropropyl) phosphate, triphenyl phosphate, melamine pyrophosphate, decabromodiphenylethane, ammonium polyphosphate, decabromodiphenyl ether and coated red phosphorus.

3. A 3N spunlace nonwoven fabric processing process according to claim 1, characterized in that: the web enters the hemming zone of the hemming machine at an angle of 40-55 deg..

4. A 3N spunlace nonwoven fabric processing process according to claim 1, characterized in that: and in the low-temperature drying step, a fiber net pressing device is adopted during prewetting, so that no displacement exists among the fiber nets.

Technical Field

The invention relates to the technical field of wall cloth production methods, in particular to a 3N spunlace non-woven fabric processing technology.

Background

The non-woven fabric is a fabric formed without spinning and weaving, fibers are directly bonded together by a physical method, the traditional spinning principle is broken through, and the non-woven fabric has the characteristics of high production rate, low cost, wide application, multiple raw material sources and the like.

Traditional non-woven fabrics quality is light, soft, ventilative, dials water, and is antibiotic moreover, the environmental protection, but compares intensity and durability relatively poor with textile fabric, and is not waterproof, and the gas permeability is poor, does not process simply like textile fabric moreover.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a 3N spunlace non-woven fabric processing technology, which solves the problems of poor strength and durability, water resistance, poor air permeability and simple processing unlike textile fabrics.

(II) technical scheme

In order to achieve the purpose of improving the qualification rate, the invention provides the following technical scheme: A3N spunlace non-woven fabric processing technology comprises printing treatment, waterproof layer treatment and embossing treatment.

(1) The processing technology for printing the 3N spunlace non-woven fabric comprises the following steps:

s1, melt blending: adding 0-10% of environment-friendly polypropylene fiber flame-retardant master batch by mass into polypropylene fiber or polyester processing raw materials, mixing, and performing high-temperature melt extrusion by using a large screw;

s3, spinning: the raw materials are on a spinning machine of a spinning system, the melt enters a spinning assembly firstly, is filtered again and uniformly pressed, is sprayed out in a trickle shape through a spinneret plate, and enters a quenching area to be cooled and solidified into filaments;

s2, drafting and web forming: leading the tows into a drafting nozzle to be drafted at high speed by compressed air, receiving fibers fed by a cotton feeder according to a set flow by a carding machine, carding the fibers into a net-shaped thin layer, lapping the net-shaped thin layer by a lapping machine for 8 to 9 layers to and fro, wherein the thickness of a cotton net is 35cm to 40cm, then uniformly paving the net-shaped thin layer on a conveying net, and laying the cotton net into a net;

s4, bonding: adding the modified polyvinyl alcohol into a charging barrel of a spraying device, uniformly spraying an adhesive between two layers of non-woven fabric fiber webs through a spraying process, vibrating the non-woven fabric fiber webs up and down to enable the adhesive to quickly and uniformly permeate into the non-woven fabric fiber webs, and conveying the non-woven fabric fiber webs forwards to a spunlace area;

s5, low-temperature drying: pre-wetting the mesh surface, then carrying out multi-channel spunlace and pattern spunlace on the front surface and the back surface, pre-drying, then respectively forming cloth by a pre-needling machine, a lower needling machine and an upper main needling machine, sending the fiber web into a hemming area of a hemming machine, hemming and reinforcing the hemming in the hemming area through the matching of a groove needle and a curved needle to prepare the required non-woven lining cloth,

s6, processing: and cutting the non-woven fabric according to the shape, laminating the cut and formed non-woven fabric, drying, rolling and packaging the shaped non-woven fabric, and transporting the non-woven fabric to a warehouse for storage.

(2) And the waterproof layer processing technology of the 3N spunlace non-woven fabric comprises the following steps: the waterproof layer is a modified polyvinyl alcohol raw material

S1, adding the cellulose nanocrystal, the carboxymethyl cellulose and the polyvinyl alcohol into a reaction kettle, stirring and reacting for 0.8-1h at 120 ℃, and cooling to 80-85 ℃.

And S2, adding neodecanoic acid glycidyl ester, continuously stirring for reaction for 0.4-0.6h, adding aminoethyl piperazine and triethanolamine, and fully and uniformly mixing to obtain the modified polyvinyl alcohol.

(3) The embossing processing technology of the 3N spunlace non-woven fabric comprises the following steps:

s1, engraving concave patterns on the surface of the embossing roller;

s2, passing the foam slurry through a roller;

s3, scraping redundant foaming slurry on the surface of the embossing roll except the concave patterns;

s4, transferring the foaming slurry in the concave patterns on the embossing roll to the non-woven base fabric through a press roll;

s5, baking the foaming slurry on the non-woven base fabric to be semi-dry;

s6, carrying out hot-pressing foaming on the non-woven fabric through a roller, wherein the roller consists of a lower roller and an upper roller, the lower roller is a rubber roller, and the upper roller is a steel roller.

Preferably, the flame retardant of the polypropylene spun-bonded non-woven fabric can adopt magnesium hydroxide, aluminum hydroxide, phosphoric acid triester, ammonium polyphosphate, octabromoether, triphenyl phosphate, hexabromocyclododecane, melamine pyrophosphate, zinc borate, decabromodiphenylethane, coated red phosphorus and triisocyanurate; flame retardants available for the terylene spunbonded nonwoven fabric include tris (2, 3-dichloropropyl) phosphate, triphenyl phosphate, melamine pyrophosphate, decabromodiphenylethane, ammonium polyphosphate, decabromodiphenyl ether and coated red phosphorus.

Preferably, the web enters the hemming zone of the hemming machine at an angle of 40-55 °.

Preferably, a fiber web pressing device is adopted during prewetting in the low-temperature drying step, so that no displacement exists among the fiber webs.

(III) advantageous effects

Compared with the prior art, the invention provides a 3N spunlace non-woven fabric processing technology, which has the following beneficial effects:

1. the 3N spunlace non-woven fabric processing technology adopts polypropylene fibers or polyester fibers as a base material, is supplemented with ingredients in scientific proportion, has high waterproof performance and air permeability on the basis of ensuring the strength and toughness requirements, simultaneously takes modified polyvinyl alcohol as a binding agent of the non-woven fabric, has high air permeability and bonding performance, can enhance the air permeability, toughness and waterproofness of the non-woven fabric, has simple processing technology, detailed production technology steps of each part, is suitable for being used by various types of production machines, has low requirements on production equipment, and is suitable for large-scale production.

Drawings

FIG. 1 is a preparation flow chart of a printing process of a 3N spunlace nonwoven fabric processing process according to the invention;

FIG. 2 is a preparation flow chart of a waterproof layer process of the 3N spunlace nonwoven fabric processing process.

FIG. 3 is a preparation flow chart of an embossing process of the 3N spunlace nonwoven fabric processing process of the 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.