阅读说明：本技术 一种制式隔离服的制造方法 (Method for manufacturing isolation suit ) 是由 楼钱坤 韦小华 于 2020-04-20 设计创作，主要内容包括：本发明公开了一种制式隔离服的制造方法,包括如下步骤：(1)将亲水改性聚丙烯内层纺粘布、纳米二氧化硅改性聚丙烯中层熔喷布和聚氨酯改性聚丙烯母粒外层纺粘布依次铺平经过热轧机热轧压合,再经过卷绕机制成SMS无纺布；(2)将SMS无纺布进行制版、裁剪后送到车间缝制,缝合处均用无纺布热熔胶通过超声波粘合；(3)将缝制好的隔离服放入紫外线消毒窗进行消毒,将隔离服放入灭菌装置内进行灭菌。SMS无纺布包括内层纺粘布、中层熔喷布和外层纺粘布,内层纺粘布具有较好的吸水性,中层熔喷布具有较好的透气性和韧性,外层纺粘布具有较好的防水隔离效果。从而使生产的隔离服透气透湿好、拒液性强、不易破损、亲肤,提升隔离服穿着的舒适感。(The invention discloses a method for manufacturing a manufacturing type isolation suit, which comprises the following steps: (1) sequentially paving hydrophilic modified polypropylene inner-layer spunbonded fabric, nano-silica modified polypropylene middle-layer meltblown fabric and polyurethane modified polypropylene master batch outer-layer spunbonded fabric, hot rolling and pressing the materials by a hot rolling mill, and preparing the materials into SMS non-woven fabric by a winding machine; (2) carrying out plate making and cutting on the SMS non-woven fabric, then sending the SMS non-woven fabric to a workshop for sewing, and ultrasonically bonding the sewing parts by using non-woven fabric hot melt adhesive; (3) and (4) putting the sewn isolation suit into an ultraviolet disinfection window for disinfection, and putting the isolation suit into a sterilization device for sterilization. The SMS non-woven fabric comprises inner-layer spun-bonded fabric, middle-layer melt-blown fabric and outer-layer spun-bonded fabric, wherein the inner-layer spun-bonded fabric has better water absorption, the middle-layer melt-blown fabric has better air permeability and toughness, and the outer-layer spun-bonded fabric has better waterproof isolation effect. Therefore, the produced isolation suit has good air and moisture permeability, strong liquid repellency, difficult damage and skin friendliness, and improves the wearing comfort of the isolation suit.)

1. A method for manufacturing a manufactured insulation garment, comprising the steps of:

a. manufacturing an SMS non-woven fabric:

(1) preparing inner-layer spunbonded fabric by using hydrophilic modified polypropylene master batches through a spunbonding method;

(2) preparing middle-layer melt-blown cloth by using nano-silica modified polypropylene master batches through a melt-blowing method;

(3) preparing outer-layer spunbonded fabric by using polyurethane modified polypropylene master batches through a spunbonding method;

(4) sequentially paving the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric, hot rolling and pressing the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric by a hot rolling mill, and preparing the SMS non-woven fabric by a winding machine;

b. manufacturing the isolation suit:

(1) making a plate of the SMS non-woven fabric, cutting the SMS non-woven fabric, and then sending the SMS non-woven fabric to a workshop for sewing;

(2) the sewed parts are bonded by non-woven fabric hot melt adhesive through ultrasonic waves;

c. and (3) disinfection and sterilization:

(1) placing the sewed isolation suit into an ultraviolet disinfection window for disinfection;

(2) and putting the isolation suit into a sterilization device for sterilization.

2. The method of manufacturing a manufactured insulation garment according to claim 1, wherein: the preparation method of the hydrophilic modified polypropylene master batch comprises the following steps:

(1) placing the nano calcium carbonate and the dispersing agent into a stirrer for stirring;

(2) and (3) putting the mixture of the polypropylene slices, the coupling agent, the hydrophilic auxiliary agent and the stirrer into a blender for mixing, extruding and granulating to obtain the hydrophilic modified polypropylene master batch.

3. The method of manufacturing a manufactured insulation garment according to claim 1, wherein: the preparation method of the nano silicon dioxide modified polypropylene master batch comprises the following steps:

(1) adding nano silicon dioxide into a toluene solvent, adding a coupling agent, putting the mixture into a reaction kettle, stirring for reaction, taking out the mixture after the reaction is finished, drying and grinding the mixture to obtain modified nano silicon dioxide;

(2) and (3) putting the polypropylene slices and the modified nano-silica into a blender for mixing, extruding and granulating to obtain the nano-silica modified polypropylene master batch.

4. The method of manufacturing a manufactured insulation garment according to claim 1, wherein: the preparation method of the polyurethane modified polypropylene master batch comprises the following steps: and (3) putting the polypropylene slices, the polyester polyurethane and the PP-g-PU into a blender for mixing, extruding and granulating to obtain the polyurethane modified polypropylene master batch.

5. The method of manufacturing a manufactured insulation garment according to claim 2, wherein: the weight portion ratio of the polypropylene slices, the nano calcium carbonate, the coupling agent, the dispersing agent and the hydrophilic auxiliary agent is 90-100:5-20:1-5:1-3: 1-5.

6. The method of manufacturing a manufactured insulation garment according to claim 3, wherein: the mass fraction ratio of the nano silicon dioxide to the coupling agent is 100: 1-5; the mass fraction ratio of the polypropylene slices to the modified nano silicon dioxide is 100: 0.1-1; the reaction time in the reaction kettle is 1-5 h.

7. The method of manufacturing a manufactured insulation garment according to claim 4, wherein: the mass fraction ratio of the polypropylene chip, the polyester polyurethane and the PP-g-PU is 100:1-5: 0.1-5.

8. The method of manufacturing a manufactured insulation garment according to claim 1, wherein: and (3) adding the inner-layer spunbonded fabric into impregnation liquid before hot rolling, modifying by electron irradiation, and filtering and drying after modification.

9. The method of manufacturing a manufactured insulation garment according to claim 8, wherein: the preparation method of the impregnation liquid comprises the following steps: according to the mass portion, 100-200 portions of methyl silicone oil and 0.5-2 portions of vinyl triethoxysilane are mixed for 1-5h at 50-70 ℃.

10. The method of manufacturing a manufactured insulation garment according to claim 8, wherein: and after the inner-layer spunbonded fabric is soaked in the soaking solution for 1-4 hours, the inner-layer spunbonded fabric is placed for 10-24 hours at normal temperature, the inner-layer spunbonded fabric is placed in irradiation equipment, nitrogen is introduced to discharge oxygen, and the gamma-ray dosage rate is 5 kGy/h.

Technical Field

The invention belongs to the field of manufacturing of isolation clothes, and particularly relates to a manufacturing method of a manufactured isolation clothes.

Background

Barrier gowns are protective articles used by medical personnel to protect them from blood, body fluids and other infectious agents as well as to protect patients from infection. The main point of use of the suit is the health care facility, which is often the location where patients gather, and this requires that the suit be safe.

The existing isolation clothes have the following defects: poor air and moisture permeability, poor liquid repellency, easy breakage, irritation to the skin, and the like. Because the isolation suit is made by a non-woven process, the isolation suit has certain water repellent effect while having low strength and light weight, so the surface pores of the suit are extremely small, and sweat steam of people cannot be discharged, thereby causing the defects.

Disclosure of Invention

The invention aims to provide the isolation suit which is good in air permeability and moisture permeability, strong in liquid repellency, not easy to damage and skin-friendly, and the comfortable feeling of wearing the isolation suit is improved.

In order to solve the technical problems, the invention adopts the following technical scheme:

a method for manufacturing a manufactured insulation garment, comprising the steps of:

a. manufacturing an SMS non-woven fabric:

(1) preparing inner-layer spunbonded fabric by using hydrophilic modified polypropylene master batches through a spunbonding method;

(2) preparing middle-layer melt-blown cloth by using nano-silica modified polypropylene master batches through a melt-blowing method;

(3) preparing outer-layer spunbonded fabric by using polyurethane modified polypropylene master batches through a spunbonding method;

(4) sequentially paving the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric, hot rolling and pressing the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric by a hot rolling mill, and preparing the SMS non-woven fabric by a winding machine;

b. manufacturing the isolation suit:

(1) making a plate of the SMS non-woven fabric, cutting the SMS non-woven fabric, and then sending the SMS non-woven fabric to a workshop for sewing;

(2) the sewed parts are bonded by non-woven fabric hot melt adhesive through ultrasonic waves;

c. and (3) disinfection and sterilization:

(1) placing the sewed isolation suit into an ultraviolet disinfection window for disinfection;

(2) and putting the isolation suit into a sterilization device for sterilization.

The SMS non-woven fabric comprises three layers, namely an inner layer spun-bonded fabric, a middle layer melt-blown fabric and an outer layer spun-bonded fabric, wherein the inner layer spun-bonded fabric has better water absorption, the middle layer melt-blown fabric has better air permeability and toughness, and the outer layer spun-bonded fabric has better waterproof isolation effect. Therefore, the produced isolation suit has good air and moisture permeability, strong liquid repellency, difficult damage and skin friendliness, and improves the wearing comfort of the isolation suit.

Preferably, the preparation method of the hydrophilic modified polypropylene master batch comprises the following steps:

(1) placing the nano calcium carbonate and the dispersing agent into a stirrer for stirring;

(2) and (3) putting the mixture of the polypropylene slices, the coupling agent, the hydrophilic auxiliary agent and the stirrer into a blender for mixing, extruding and granulating to obtain the hydrophilic modified polypropylene master batch.

The nano calcium carbonate has better hydrophilicity and can improve the tensile strength of the polypropylene fiber. Because the nano calcium carbonate is easy to agglomerate, the nano calcium carbonate and the dispersing agent are uniformly dispersed in the stirring machine, and then the rest raw materials are put into the blending machine for blending, so that the dispersibility of the nano calcium carbonate is improved. The hydrophilic assistant is helpful for improving the water absorption of the polypropylene fiber, and common hydrophilic assistants are sodium alkyl benzene sulfonate and polyethylene glycol alkyl ether. The coupling agent can be KH550, and the dispersing agent can be sodium orthophosphate or potassium citrate.

Preferably, the preparation method of the nano silicon dioxide modified polypropylene master batch comprises the following steps:

(1) adding nano silicon dioxide into a toluene solvent, adding a coupling agent, putting the mixture into a reaction kettle, stirring for reaction, taking out the mixture after the reaction is finished, drying and grinding the mixture to obtain modified nano silicon dioxide;

(2) and (3) putting the polypropylene slices and the modified nano-silica into a blender for mixing, extruding and granulating to obtain the nano-silica modified polypropylene master batch.

The nano-silica is also easy to aggregate, and the nano-silica modified by a wet method can be uniformly dispersed in the polypropylene slices. The polypropylene fiber modified by the nano silicon dioxide has larger aperture, the air permeability is improved, and the toughness of the melt-blown fabric is improved.

Preferably, the preparation method of the polyurethane modified polypropylene master batch comprises the following steps: and (3) putting the polypropylene slices, the polyester polyurethane and the PP-g-PU into a blender for mixing, extruding and granulating to obtain the polyurethane modified polypropylene master batch.

The polyester type polyurethane has better hydrophobicity, and the PP-g-PU is a graft copolymer generated by the free radical reaction of maleic anhydride polypropylene and polyurethane, is a compatibilizer, and can enable the polyurethane and the polypropylene to be better compatible and blended. The polypropylene fiber modified by polyurethane has better waterproof performance and strong liquid repellency, and improves the strength of the outer-layer spunbonded fabric.

Preferably, the mass part ratio of the polypropylene slices, the nano calcium carbonate, the coupling agent, the dispersing agent and the hydrophilic auxiliary agent is 90-100:5-20:1-5:1-3: 1-5.

Preferably, the mass fraction ratio of the nano silica to the coupling agent is 100: 1-5; the mass fraction ratio of the polypropylene slices to the modified nano silicon dioxide is 100: 0.1-1; the reaction time in the reaction kettle is 1-5 h. If the content of the nano silicon dioxide is too high, the toughness of the melt-blown fabric is easily reduced, and the melt-blown fabric is easily damaged.

Preferably, the mass fraction ratio of the polypropylene chips, the polyester polyurethane and the PP-g-PU is 100:1-5: 0.1-5.

Preferably, the inner layer spunbonded fabric is put into an impregnation liquid before being subjected to hot rolling, is modified through electron irradiation, and is filtered and dried after being modified. The irradiation modification can graft groups on the inner-layer spunbonded fabric so as to achieve the purposes of improving the hydrophilicity, the skin-friendly property and the like.

Preferably, the preparation method of the impregnation liquid comprises the following steps: according to the mass portion, 100-200 portions of methyl silicone oil and 0.5-2 portions of vinyl triethoxysilane are mixed for 1-5h at 50-70 ℃. Dissolving vinyltriethoxysilane in methyl silicone oil, and grafting silicon-containing groups onto the inner-layer spunbonded fabric through electron irradiation, so that the skin-friendly property of the inner-layer spunbonded fabric is improved.

Preferably, the inner layer spunbonded fabric is placed for 10 to 24 hours at normal temperature after being soaked in the soaking solution for 1 to 4 hours, and then is placed into irradiation equipment, nitrogen is introduced to discharge oxygen, and the gamma ray dosage rate is 5 kGy/h. The irradiation is easy to generate ozone, so the irradiation modification needs to be carried out under the protection of inert gas.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the SMS non-woven fabric comprises three layers, namely an inner layer spun-bonded fabric, a middle layer melt-blown fabric and an outer layer spun-bonded fabric, wherein the inner layer spun-bonded fabric has better water absorption, the middle layer melt-blown fabric has better air permeability and toughness, and the outer layer spun-bonded fabric has better waterproof isolation effect. Therefore, the prepared isolation suit has good air and moisture permeability, strong liquid repellency, difficult damage and skin friendliness, and improves the wearing comfort of the isolation suit. The method has the following specific beneficial effects:

1. the nano calcium carbonate has better hydrophilicity and can improve the tensile strength of the polypropylene fiber. Because the nano calcium carbonate is easy to agglomerate, the nano calcium carbonate and the dispersing agent are uniformly dispersed in the stirring machine, and then the rest raw materials are put into the blending machine for blending, so that the dispersibility of the nano calcium carbonate is improved. The hydrophilic assistant contributes to the improvement of the water absorption of the polypropylene fiber.

2. The nano-silica is also easy to aggregate, and the nano-silica modified by a wet method can be uniformly dispersed in the polypropylene slices. The polypropylene fiber modified by the nano silicon dioxide has larger aperture, the air permeability is improved, and the toughness of the melt-blown fabric is improved.

3. The polyester type polyurethane has better hydrophobicity, and the PP-g-PU is a graft copolymer generated by the free radical reaction of maleic anhydride polypropylene and polyurethane, is a compatibilizer, and can enable the polyurethane and the polypropylene to be better compatible and blended. The polypropylene fiber modified by polyurethane has better waterproof performance and strong liquid repellency, and improves the strength of the outer-layer spunbonded fabric.

4. Dissolving vinyltriethoxysilane in methyl silicone oil, and grafting silicon-containing groups onto the inner-layer spunbonded fabric through electron irradiation, so that the skin-friendly property of the inner-layer spunbonded fabric is improved.

Detailed Description

The present invention is further illustrated by the following examples.

A method for manufacturing a manufactured isolation suit comprises the following steps:

a. manufacturing an SMS non-woven fabric:

(1) preparing the inner-layer spunbonded fabric by using the hydrophilic modified polypropylene master batch through a spunbonding method:

putting the nano calcium carbonate and the dispersing agent into a stirrer and stirring for 30 min;

II, putting the mixture of the polypropylene slices, the coupling agent KH550, the hydrophilic auxiliary agent sodium alkyl benzene sulfonate and the stirrer into a blender, mixing for 2-5h, extruding and granulating to obtain hydrophilic modified polypropylene master batches;

(2) preparing middle-layer melt-blown cloth by using nano-silica modified polypropylene master batches through a melt-blown method:

putting the nano-silica into a toluene solvent, adding a coupling agent, putting the mixture into a reaction kettle, stirring and reacting for 1-3 hours, taking out the mixture after the reaction is finished, drying and grinding the mixture to obtain modified nano-silica;

II, putting the polypropylene slices and the modified nano-silica into a blender, mixing for 2-5h, extruding and granulating to obtain nano-silica modified polypropylene master batches;

(3) preparing outer-layer spunbonded fabric by using polyurethane modified polypropylene master batches through a spunbonding method: putting the polypropylene slices, the polyester polyurethane and the PP-g-PU into a blender, mixing for 2-5h, extruding and granulating to obtain polyurethane modified polypropylene master batches;

(4) irradiation modification:

preparing a steeping fluid: mixing 100-200 parts by mass of methyl silicone oil and 0.5-2 parts by mass of vinyl triethoxysilane at 50-70 ℃ for 1-5 h;

II, soaking the inner-layer spunbonded fabric in the impregnation liquid for 1-4 hours, then placing the cloth at normal temperature for 10-24 hours, placing the cloth in irradiation equipment, introducing nitrogen to discharge oxygen, wherein the gamma ray dosage rate is 5 kGy/h;

(5) sequentially paving the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric, hot rolling and pressing the inner layer spun-bonded fabric, the middle layer melt-blown fabric and the outer layer spun-bonded fabric by a hot rolling mill, and preparing the SMS non-woven fabric by a winding machine;

b. manufacturing the isolation suit:

(1) making a plate of the SMS non-woven fabric, cutting the SMS non-woven fabric, and then sending the SMS non-woven fabric to a workshop for sewing;

(2) the sewed parts are bonded by non-woven fabric hot melt adhesive through ultrasonic waves;

c. and (3) disinfection and sterilization:

(1) placing the sewed isolation suit into an ultraviolet disinfection window for disinfection;

(2) and putting the isolation suit into a sterilization device for sterilization.

The SMS non-woven fabric comprises three layers, namely an inner layer spun-bonded fabric, a middle layer melt-blown fabric and an outer layer spun-bonded fabric, wherein the inner layer spun-bonded fabric has better water absorption, the middle layer melt-blown fabric has better air permeability and toughness, and the outer layer spun-bonded fabric has better waterproof isolation effect. Therefore, the prepared isolation suit has good air and moisture permeability, strong liquid repellency, difficult damage and skin friendliness, and improves the wearing comfort of the isolation suit.

The nano calcium carbonate has better hydrophilicity and can improve the tensile strength of the polypropylene fiber. Because the nano calcium carbonate is easy to agglomerate, the nano calcium carbonate and the dispersing agent are uniformly dispersed in the stirring machine, and then the rest raw materials are put into the blending machine for blending, so that the dispersibility of the nano calcium carbonate is improved. The hydrophilic assistant is helpful for improving the water absorption of the polypropylene fiber, and common hydrophilic assistants are sodium alkyl benzene sulfonate and polyethylene glycol alkyl ether. The coupling agent can be KH550, and the dispersing agent can be sodium orthophosphate or potassium citrate.

The nano-silica is also easy to aggregate, and the nano-silica modified by a wet method can be uniformly dispersed in the polypropylene slices. The polypropylene fiber modified by the nano silicon dioxide has larger aperture, the air permeability is improved, and the toughness of the melt-blown fabric is improved.

The polyester type polyurethane has better hydrophobicity, and the PP-g-PU is a graft copolymer generated by the free radical reaction of maleic anhydride polypropylene and polyurethane, is a compatibilizer, and can enable the polyurethane and the polypropylene to be better compatible and blended. The polypropylene fiber modified by polyurethane has better waterproof performance and strong liquid repellency, and improves the strength of the outer-layer spunbonded fabric.