阅读说明：本技术 防锈纺粘无纺布包装材料及制造方法 (Antirust spun-bonded non-woven fabric packaging material and manufacturing method thereof ) 是由 任世伟 周红 王雀 刘宏 徐欣轶 杨鹏 于 2018-05-29 设计创作，主要内容包括：一种防锈纺粘无纺布包装材料及制造方法,具有气相缓蚀功能,其特征在于原料组份,按质量百分比计：纺丝专用料丙纶PP或涤纶PET为70～90％,气相缓蚀剂VCI为1～30％,吸水树脂或吸水材料为1～5％,助剂为0.5～2％,以上各组份质量百分数之和为100％；制造方法为：使用常规的无纺布生产设备,从制造专用的气相缓蚀剂VCI母粒至防锈纺粘无纺布成品,1.气相缓蚀剂VCI母粒制造；2.将VCI母粒与纺丝专用料按上述比例混合；3.按无纺布生产工艺的熔融、挤出→纺丝铺网→加固→制成防锈纺粘无纺布成品。显著特点是该产品的防护物理指标高于防锈纸和防锈膜,尤其撕裂度和戳穿强度,还具有不掉纤维、吸收水汽的特点。(An antirust spun-bonded non-woven fabric packaging material and a manufacturing method thereof have a gas phase corrosion inhibition function, and are characterized by comprising the following raw material components in percentage by mass: 70-90% of polypropylene PP or polyester PET special material for spinning, 1-30% of vapor phase corrosion inhibitor VCI, 1-5% of water-absorbent resin or water-absorbent material and 0.5-2% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%; the manufacturing method comprises the following steps: using conventional non-woven fabric production equipment to manufacture a special vapor phase corrosion inhibitor VCI master batch to an antirust spun-bonded non-woven fabric finished product, 1, manufacturing the vapor phase corrosion inhibitor VCI master batch; 2. mixing the VCI master batch and the special spinning material according to the proportion; 3. melting and extruding according to the production process of the non-woven fabric → lapping by spinning → reinforcing → preparing the finished product of the antirust spun-bonded non-woven fabric. The product has the obvious characteristics that the physical protection index of the product is higher than that of antirust paper and antirust film, especially the tearing strength and the puncture strength, and the product also has the characteristics of no fiber falling and water vapor absorption.)

1. An antirust spun-bonded non-woven fabric packaging material has a vapor phase corrosion inhibition function, and is characterized in that: the raw material components of the antirust spun-bonded non-woven fabric comprise, by mass, 70-90% of PP or PET special for spinning, 1-30% of VCI (volatile corrosion inhibitor), 1-5% of water-absorbent resin or water-absorbent material and 0.5-2% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%.

2. The anti-rust spun-bonded non-woven fabric packaging material as claimed in claim 1, wherein the vapor phase corrosion inhibitor VCI substance is selected from the group consisting of alcohol amine of organic amine, urotropin or benzotriazole, benzotriazole derivative, imidazole, imidazoline compound, caprylate, laurate, benzoate, stearate, nitrite, cinnamate and molybdate, borate or phosphate of inorganic acid salt; the state of the vapor phase corrosion inhibitor VCI is powder or master batch.

3. A method for manufacturing the antirust spun-bonded non-woven fabric packaging material of claim 1, which adopts conventional special production equipment for spun-bonded non-woven fabrics, and is characterized in that in one manufacturing method, the raw materials are selected to be powder, the special material for spinning is powder, vapor phase corrosion inhibitor VCI powder and auxiliary agent is powder; 1.1 pretreatment of powder raw materials: firstly, mixing VCI powder and auxiliary agent powder in the components, and carrying out micronization and fine grinding treatment by a grinder to ensure that the particle size of the powder is more than or equal to 800 meshes; 1.2 powder mixing: uniformly mixing the special spinning powder PP or PET with the finely ground VCI powder and the auxiliary agent powder mixture; 1.3 production of antirust spun-bonded non-woven fabric: adding the mixture into a cylinder of an extruder of conventional spun-bonded non-woven fabric special production equipment, and operating according to the conventional spun-bonded non-woven fabric process: heating at 200-290 ℃, melting, extruding and stretching to form continuous filaments, then entering a forming section to enable the filaments to be laid into a fiber web, enabling the fiber web to be changed into a non-woven fabric with an antirust function through self-bonding, thermal bonding, chemical bonding or mechanical reinforcement, and finally winding by a collecting roller to form an antirust spunbonded non-woven fabric product.

4. A method for manufacturing the antirust spunbonded non-woven fabric packaging material of claim 1 adopts conventional production equipment special for spunbonded non-woven fabrics, and is characterized in that in the second manufacturing method, the selected raw materials are granules, and the mixture ratio of the granules is 2.1: the conversion formula between the special PP or PET for spinning and the gas phase corrosion inhibitor component contained in the finished product when the VCI master batch is selected as the gas phase corrosion inhibitor is as follows: the adding mass of the vapor phase corrosion inhibitor in the raw material of the anti-rust spun-bonded non-woven fabric is equal to the adding mass of the VCI master batches of the vapor phase corrosion inhibitor and the mass percentage of VCI in the VCI master batches of the vapor phase corrosion inhibitor is the master batches;

2.2 preparation of antirust spun-bonded non-woven fabric: carrying out granule material mixing according to the raw material components of the 2.1 antirust spun-bonded non-woven fabric, adding the granules which are uniformly mixed into a material cylinder of an extruder of special production equipment for spun-bonded non-woven fabric, and carrying out conventional spun-bonded non-woven fabric process operation: heating at 200-290 ℃, melting, extruding and stretching to form continuous filaments, laying the filaments into a web, making the web become a non-woven fabric with an antirust function by self-bonding, thermal bonding, chemical bonding or mechanical reinforcement, and finally taking up the product by a take-up roller.

5. The method for producing the antirust spunbonded nonwoven fabric packaging material according to claim 4, wherein the gas phase corrosion inhibitor VCI master batch comprises the following components in percentage by mass: the corrosion inhibitor is prepared by mixing gas phase corrosion inhibitor VCI powder and special spinning powder PP or PET, wherein the special spinning powder PP or PET is 50-85%, the gas phase corrosion inhibitor VCI powder is 10-40%, and the auxiliary agent is 1-10%.

6. The method for producing the antirust spunbonded nonwoven fabric packaging material according to claim 4, wherein the manufacturing of the vapor phase corrosion inhibitor VCI master batch comprises the following steps: (a) pretreating a powder raw material: mixing VCI powder with assistant powder, and micronizing by using a grinder to ensure that the granularity is more than or equal to 800 meshes; (b) manufacturing of gas phase corrosion inhibitor VCI master batch: uniformly stirring the special spinning powder PP or PET and the pretreated powder raw material again, adding the mixture into an extrusion granulator, and granulating to obtain the powder with the particle size of 3-5 mm.

Technical Field

The invention belongs to the technical field of metal rust prevention, and relates to a rust-proof spun-bonded non-woven fabric material for rust prevention and protective packaging of metal products and a manufacturing method thereof.

Background

at present, the antirust and protective packaging materials of metals and metal products are mainly antirust paper and antirust films. The production process of the anti-rust paper comprises the following steps: base paper used for packaging → composite other materials → base paper coating corrosion inhibitor → drying → finishing (trimming) → processing to be finished product; the production process of the anti-rust film comprises the following steps: manufacturing of antirust plastic master batches → mixing of antirust film raw materials → special machine feeding → extrusion → blow molding → processing of finished products.

In practical packaging application, the antirust paper and the antirust film have certain defects due to the base material of the antirust paper and the antirust film, although the antirust paper and the antirust film respectively have the advantages of the products. The main advantages of the anti-rust paper are as follows: the water vapor in the environment can be absorbed, and the antirust effect is improved; the porous loose structure of the paper ensures that the volatile speed of the vapor phase corrosion inhibitor coated on one surface of the paper is high, and the anti-rust effect can be quickly exerted; more corrosion inhibitor can be added into the paper, so that the antirust effect is better. However, the rust inhibitive paper has the following defects: the paper has the defects of easy fiber loss, easy breakage and no transparent observation, and the paper fiber is easy to lose due to the expansion and the relaxation of the paper fiber after the paper is wetted, particularly, the lost paper fiber is adhered to the surfaces of metal and metal products and is difficult to treat, the operation and the reprocessing quality of the next procedure are seriously influenced in the protection of the precise metal products with the surface requirement on cleanliness, and great inconvenience is brought to the actual production. The main advantages of the rust preventive film (patent of the applicant: ZL 01128198.7 single-layer gas-phase rust preventive film manufacturing method) are: transparent, flexible, can be welded and sealed, can be processed and formed, has high barrier property, is convenient to use and the like. The defects of the anti-rust film are as follows: the membrane material can not absorb water vapor in the environment, condensation is easy to generate under the condition of temperature difference between the inside and the outside of the membrane, and thus the risk of corrosion exists; in addition, the vapor phase inhibitor in the antirust film is firstly diffused from the film to the surface of the film and then volatilized to a packaging space, a certain time is required for diffusion, and the speed of playing the antirust function is lower than that of antirust paper.

Therefore, the defects of the antirust paper and the antirust film are solved, and the packaging material which has a good antirust function and can ensure the surface cleanliness of the metal and the metal products is provided for the metal and the metal products, so that the packaging material is very important and necessary. The existing antirust non-woven fabric can effectively solve the two most important problems of non-moisture absorption and the antirust function of an antirust film being weaker than that of antirust paper, but also has the problem of fiber falling, and the existing antirust non-woven fabric has high cost and very limited market application due to the manufacturing process of the existing product. The prior production process of the antirust non-woven fabric comprises the following steps: purchasing general non-woven fabrics sold in the market; preparing a corrosion inhibitor solution; combining the corrosion inhibitor solution with the non-woven fabric: base material non-woven fabric → corrosion inhibitor coating → drying and drying → antirust non-woven fabric finished product. The existing production needs secondary processing of non-woven fabrics, and the products are endowed with antirust functions.

Disclosure of Invention

The invention aims to provide an antirust spunbonded non-woven fabric packaging material and a manufacturing method thereof.

The invention provides an antirust spunbonded non-woven fabric packaging material which has a gas phase corrosion inhibition function and is characterized in that: the anti-rust spun-bonded non-woven fabric with the vapor phase corrosion inhibition function comprises the following raw material components in percentage by mass: 70-90% of polypropylene PP or polyester PET special material for spinning, 1-30% of vapor phase corrosion inhibitor VCI, 1-5% of water-absorbent resin or water-absorbent material and 0.5-2% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%; the manufacturing method comprises the following steps: 1. manufacturing special vapor phase corrosion inhibitor VCI master batch for the antirust spun-bonded non-woven fabric; 2. using non-woven fabric production equipment, mixing materials: mixing the VCI powder of the vapor phase corrosion inhibitor and the special powder for spinning according to the proportion; or mixing the VCI master batch of the vapor phase corrosion inhibitor with the master batch special for spinning, and the conversion formula between the VCI master batch of the vapor phase corrosion inhibitor and the vapor phase corrosion inhibitor component contained in the finished product is as follows: the adding mass of the vapor phase corrosion inhibitor in the raw material of the anti-rust spun-bonded non-woven fabric is equal to the adding mass of the VCI master batches of the vapor phase corrosion inhibitor and the mass percentage of VCI in the VCI master batches of the vapor phase corrosion inhibitor is the master batches; 3. melting and extruding → spinning and lapping → reinforcing → preparing the finished product of the antirust spun-bonded non-woven fabric in the spun-bonded non-woven fabric production equipment according to the non-woven fabric production process.

The anti-rust spunbonded non-woven fabric packaging material has the remarkable characteristics that the anti-rust spunbonded non-woven fabric manufactured by the method has higher protection physical index than anti-rust paper and an anti-rust film, particularly has tearing strength and puncture strength, and also has the characteristics of no fiber loss and water vapor absorption. Different from the corrosion inhibitor coating process in the prior antirust non-woven fabric production, the invention has the outstanding advantages that the conventional non-woven fabric production equipment is used, the gas phase corrosion inhibition VCI is directly added into the spun-bonded non-woven fabric raw material from the manufacture of the non-woven fabric, and the finished product is prepared by the spinning manufacturing process of the non-woven fabric. The method can effectively solve the problem of fiber dropping of the antirust packaging material, and reduces the coating processing, drying process and equipment of the traditional process of adding the corrosion inhibitor into the secondary processing coating, thereby reducing energy consumption, saving water, reducing manufacturing cost, having less production process and more convenient operation, and being more beneficial to popularization and application of antirust non-woven fabric products. In addition, the antirust spunbonded non-woven fabric can be compounded with various materials such as PE, PP, PA, PET, braided fabrics and the like so as to meet the requirements of different functions. The antirust spun-bonded non-woven fabric packaging material can be welded, and has wider and more convenient actual application range.

Detailed Description

The antirust spun-bonded non-woven fabric packaging material has a gas phase corrosion inhibition function, and is characterized in that: the antirust spun-bonded non-woven fabric comprises the following raw material components in percentage by mass: 70-90% of PP or PET special material for spinning, 1-30% of vapor phase corrosion inhibitor VCI, 1-5% of water-absorbent resin or water-absorbent material and 0.5-2% of auxiliary agent, wherein the sum of the mass percentages of the components is 100%. The vapor phase corrosion inhibitor VCI refers to organic amine alcohol amine, urotropine or benzotriazole, benzotriazole derivatives, imidazole and imidazoline compounds, organic acid salt octoate, laurate, benzoate, stearate, nitrite, cinnamate and inorganic acid salt molybdate, borate or phosphate; the vapor phase corrosion inhibitor VCI can be powder or master batch.

One of the manufacturing methods of the antirust spunbonded nonwoven fabric packaging material comprises the following steps: the production method adopts conventional special production equipment for spun-bonded non-woven fabrics, and is characterized in that the raw materials are selected to be powder materials, the special material for spinning is powder material, vapor phase corrosion inhibitor VCI powder is selected, and the auxiliary agent is powder; 1.1 pretreatment of powder raw materials: firstly, mixing VCI powder and auxiliary agent powder in the components, and carrying out micronization and fine grinding treatment by a grinder to ensure that the particle size of the powder is more than or equal to 800 meshes; 1.2 powder mixing: after uniformly mixing the special spinning powder PP or PET with the mixture of finely ground VCI powder and auxiliary agent powder, 1.3 producing the antirust spun-bonded non-woven fabric: adding the mixture into a cylinder of an extruder of conventional spun-bonded non-woven fabric special production equipment, and operating according to the conventional spun-bonded non-woven fabric process: heating at 200-290 ℃, melting, extruding and stretching to form continuous filaments, then entering a forming section to enable the filaments to be laid into a fiber web, enabling the fiber web to be changed into a non-woven fabric with an antirust function through self-bonding, thermal bonding, chemical bonding or mechanical reinforcement, and finally winding by a collecting roller to form an antirust spunbonded non-woven fabric product.

The second manufacturing method of the antirust spun-bonded non-woven fabric packaging material comprises the following steps: the production equipment special for the conventional spun-bonded non-woven fabric is characterized in that the raw materials are selected from granules: selecting special spinning granules, selecting a vapor phase corrosion inhibitor as VCI master batches, and preparing the raw materials of the granules: 2.1. and (3) granule proportioning: selecting PP or PET special for spinning as granules, and selecting VCI master batch and the conversion formula of the gas phase corrosion inhibitor component contained in the finished product as follows: the adding mass of the vapor phase corrosion inhibitor in the raw material of the anti-rust spun-bonded non-woven fabric is equal to the adding mass of the VCI master batches of the vapor phase corrosion inhibitor and the mass percentage of VCI in the VCI master batches of the vapor phase corrosion inhibitor is the master batches.

2.2. Manufacturing the antirust spunbonded non-woven fabric: according to the raw material composition of the anti-rust spun-bonded non-woven fabric, carrying out granule material mixing, adding granules which are uniformly mixed into a material cylinder of an extruder of the special production equipment for the spun-bonded non-woven fabric, and carrying out the technological operation of the conventional spun-bonded non-woven fabric: heating at 200-290 ℃, melting, extruding and stretching to form continuous filaments, laying the filaments into a web, making the web become a non-woven fabric with an antirust function by self-bonding, thermal bonding, chemical bonding or mechanical reinforcement, and finally taking up the product by a take-up roller.

The second gas phase corrosion inhibitor in the manufacturing method is VCI master batch, the VCI master batch is formed by mixing gas phase corrosion inhibitor VCI powder with special spinning powder PP or PET, and the special spinning powder PP or PET is 50-85% by mass, the VCI powder is 10-40% by mass and the auxiliary agent is 1-10% by mass.

Manufacturing of gas phase corrosion inhibitor VCI master batch: (a) pretreating a powder raw material: mixing VCI powder and assistant powder in proportion, and micronizing by using a grinder to ensure that the granularity is more than or equal to 800 meshes; (b) and (b) uniformly stirring the PP or PET powder or the master batch and the powder raw material of the pretreated VCI master batch in the step (a) again, adding the mixture into an extrusion granulator, and granulating to obtain granules with the particle size of 3-5 mm.