阅读说明：本技术 一种印花避孕套及其制备方法 (Printed condom and preparation method thereof ) 是由 赵川 于 2021-09-03 设计创作，主要内容包括：本发明提供一种印花避孕套及其制备方法,包括以下步骤：将胶乳原液、酪素、氨水、扩散剂、硫磺、促进剂、氧化锌和防老剂混合,预硫化,离心,静置,得到胶乳原材料；将模具浸入所述胶乳原材料,沾胶均匀后,烘干,再次浸入胶乳原材料中,再次烘干,杂质清理,喷绘,再浸入稳定剂中,烘干后浸入胶乳原材料中,烘干,卷边,脱模,得到印花避孕套；喷绘采用的色素包括比例为(200～400)g:(5～10)mL:(7～20)g:(13～35)g的树脂、渗透剂、染料和铵盐。该方法采用的色素不与胶乳反应,喷绘之后不分层,不褪色,获得性能稳定的印花避孕套；且制备的避孕套具有较高的爆破压力；无可见针孔；密封性好。(The invention provides a printed condom and a preparation method thereof, and the method comprises the following steps: mixing latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent, pre-vulcanizing, centrifuging and standing to obtain a latex raw material; immersing a mould into the latex raw material, drying after uniformly adhering, immersing into the latex raw material again, drying again, cleaning impurities, spraying, immersing into a stabilizer again, immersing into the latex raw material after drying, curling, and demoulding to obtain the printing condom; the pigment adopted by the spray painting comprises (200-400) g, (5-10) mL, (7-20) g, (13-35) g of resin, penetrant, dye and ammonium salt. The pigment adopted by the method does not react with latex, does not delaminate and fade after being sprayed and painted, and the printed condom with stable performance is obtained; the prepared condom has higher bursting pressure; no visible pinhole; the sealing performance is good.)

1. A method for preparing a printed condom comprises the following steps:

mixing latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent, pre-vulcanizing, centrifuging and standing to obtain a latex raw material;

immersing a mould into the latex raw material, drying after uniformly adhering, immersing into the latex raw material again, drying again, cleaning impurities, spraying, immersing into a stabilizer again, immersing into the latex raw material after drying, curling, and demoulding to obtain the printing condom;

the pigment adopted by the spray painting comprises (200-400) g, (5-10) mL, (7-20) g, (13-35) g of resin, penetrant, dye and ammonium salt;

the resin is prepared from phenolic resin and tetrabutylammonium iodide.

2. The preparation method according to claim 1, wherein the mass ratio of the latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent is (96-97) to (0.18-0.24): (0.13-0.18), (0.04-0.06), (1-1.1), (0.45-0.55), (0.6-0.7) and (0.9-1.0).

3. The preparation method of claim 1, wherein the dye comprises rhodamine, xanthophyll, Victoria blue, butanone, ethanol and methyl ether in a ratio of (1-5) g (5-10) g (1-5) g (500-750) mL (100-350) mL (20-50).

4. The method of claim 1, wherein the dispersing agent is selected from sodium methylene dinaphthalene sulfonate;

the accelerator is selected from zinc ethylphenyldithiocarbamate and/or zinc 2,6 diethyldithiocarbamate;

the anti-aging agent is selected from di-tert-butyl-p-cresol.

5. The preparation method according to claim 1, wherein the temperature of the pre-vulcanization treatment is 53-57 ℃ and the time is 4.5-5.5 hours.

6. The method according to claim 1, wherein the temperature of the mold dipped in the latex raw material is 28 to 30 ℃ and the humidity is controlled to be 50 to 70%;

the rotating speed of the mould is 2 seconds/circle when the glue is adhered.

7. The preparation method according to claim 1, wherein the temperature is constant in the process of spraying, the temperature is 25 ℃ and the humidity is 10%.

8. The method of preparation according to claim 1, characterized in that the stabilizer is chosen from coconut fatty acid diethanolamide.

9. The preparation method according to claim 1, wherein the speed of the inkjet printing is 0.5-0.8m/s, and the distance between the nozzle and the rubber mold is 0.05-0.1 m.

10. A printed condom obtainable by the process of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of condom preparation, and particularly relates to a printed condom and a preparation method thereof.

Background

At present, most of the condoms on the market are ordinary condoms, namely a smooth surface type, a thread type, a floating point type and the like. A small part of the condom is printed with designs, patterns, fonts and the like, but the prior art leads the colored part of the condom printed with designs, patterns and fonts to be easily layered, cracked, faded and the like.

Disclosure of Invention

In view of the above, the present invention aims to provide a printed condom and a preparation method thereof, wherein the method is simple and can obtain the printed condom.

The invention provides a method for preparing a printed condom, which comprises the following steps:

mixing latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent, pre-vulcanizing, centrifuging and standing to obtain a latex raw material;

immersing a mould into the latex raw material, drying after uniformly adhering, immersing into the latex raw material again, drying again, cleaning impurities, spraying, immersing into a stabilizer again, immersing into the latex raw material after drying, curling, and demoulding to obtain the printing condom;

the pigment adopted by the spray painting comprises (200-400) g, (5-10) mL, (7-20) g, (13-35) g of resin, penetrant, dye and ammonium salt;

the resin is prepared from phenolic resin and tetrabutylammonium iodide.

In the invention, the mass ratio of the latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent is (96-97) to (0.18-0.24): (0.13-0.18), (0.04-0.06), (1-1.1), (0.45-0.55), (0.6-0.7) and (0.9-1.0). In the specific embodiment of the invention, the mass ratio of the latex stock solution, the casein, the ammonia water, the dispersing agent, the sulfur, the accelerator, the zinc oxide and the anti-aging agent is 96.46:0.21:0.15:0.05:1.05:0.49:0.64: 0.94.

In the invention, the dye comprises rhodamine, xanthophyll, Victoria blue, butanone, ethanol and methyl ether in the proportion of (1-5) g, (5-10) g, (1-5) g, (500-750) mL, (100-350) mL and (20-50) mL.

The dispersing agent is selected from sodium methylene dinaphthalene sulfonate;

the accelerator is selected from zinc ethylphenyldithiocarbamate and/or zinc 2,6 diethyldithiocarbamate; in the examples, the mass ratio of zinc ethylphenyldithiocarbamate and/or zinc 2,6 diethyldithiocarbamate is 0.34: 0.15.

The anti-aging agent is selected from di-tert-butyl-p-cresol.

In the invention, the temperature of the pre-vulcanization treatment is 53-57 ℃, and the time is 4.5-5.5 h.

In the invention, the temperature of the mould immersed into the latex raw material is 28-30 ℃, and the humidity is controlled at 50-70%;

the rotating speed of the mould is 2 seconds/circle when the glue is adhered.

In the invention, the temperature is constant in the process of spray painting, the temperature is 25 ℃, and the humidity is 10%.

In the present invention, the stabilizer is selected from coconut oil fatty acid diethanolamide.

In the invention, the speed of the spray painting is 0.5-0.8m/s, and the distance between the spray head and the rubber mold is 0.05-0.1 m.

The invention provides a printed condom which is prepared by the preparation method of the technical scheme.

The invention provides a method for preparing a printed condom, which comprises the following steps: mixing latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent, pre-vulcanizing, centrifuging and standing to obtain a latex raw material; immersing a mould into the latex raw material, drying after uniformly adhering, immersing into the latex raw material again, drying again, cleaning impurities, spraying, immersing into a stabilizer again, immersing into the latex raw material after drying, curling, and demoulding to obtain the printing condom; the pigment adopted by the spray painting comprises (200-400) g, (5-10) mL, (7-20) g, (13-35) g of resin, penetrant, dye and ammonium salt; the resin is prepared from phenolic resin and tetrabutylammonium iodide. The pigment adopted in the method does not react with latex, does not delaminate and fade after being sprayed and painted, and the printed condom with stable performance is obtained; the prepared condom has higher bursting pressure; no visible pinhole; the edge curl and the adhesive film are seriously bonded without breakage, lack or serious deformation basically; the sealing performance is good. The invention can realize printing designs, patterns, characters and the like on the condom without causing layering, cracking, fading and the like of the condom.

Drawings

Fig. 1 is a schematic external view of a printed condom made according to example 1 of the present invention.

Detailed Description

To further illustrate the present invention, a printed condom and a method for making the same are described in detail below with reference to the following examples, which should not be construed as limiting the scope of the invention.

Example 1

Mixing 3g of rhodamine, 8g of xanthophyll essence, 5g of Victoria blue, 600ml of butanone, 200ml of ethanol and 30ml of methyl ether to obtain a dye;

reacting 100g of phenolic resin with the model T376J and 30g of tetrabutylammonium iodide to obtain resin;

mixing 20g of resin, 10mL of penetrant fatty alcohol-polyoxyethylene ether, 9g of dye and 3g of ammonium salt to obtain a pigment;

96.46% of latex stock solution, 0.21% of casein, 0.15% of ammonia water, 0.05% of dispersing agent NF (sodium methylene dinaphthalene sulfonate), 1.05% of sulfur, 0.34% of accelerant PX (zinc ethyl phenyl dithiocarbamate), 0.15% of accelerant ZDC (zinc 26 diethyl dithiocarbamate), 0.64% of zinc oxide and 0.94% of anti-aging agent 264 (di-tert-butyl-p-cresol) are proportioned to produce raw materials, then the raw materials are subjected to pre-vulcanization treatment (the temperature is kept at 55 ℃, the uniform stirring is carried out for 5 hours), then the centrifugal treatment is carried out to remove impurities in the raw materials, and the raw materials are poured into a dipping tank after standing for 48 hours. Starting a production line, and firstly, washing, cleaning and drying a die on the line;

secondly, dipping a mould into a glue tank with latex raw materials, controlling the temperature and the humidity of the latex at 29 ℃ and 60% in the dipping process, enabling the mould to move forwards linearly at a constant speed, simultaneously enabling the mould to rotate clockwise at a constant speed (the rotating speed is 2 seconds/circle), uniformly coating glue on the mould (controlling the glue coating amount according to the solid content of glue solution), and drying for one time (controlling the humidity and drying at 65 ℃ till complete drying);

and thirdly, immersing the rubber mold dried for the first time into a rubber groove with the same conditions in the second step, immersing the rubber mold for the second time, drying, cleaning impurities on the surface (brushing with a soft brush at a constant speed) after drying, starting a spray printing device at the moment, and spraying patterns or characters on the rubber mold. The constant temperature of the production environment is kept at 25 ℃ and the humidity is 10 percent in the spraying process, the spraying equipment is kept vertical to the rubber mold longitudinally and can move up and down, the moving speed is set to be 0.5-0.8m/s according to the size of patterns or characters (the larger the spraying area is, the faster the speed is, and vice versa), and the distance between the spray head and the rubber mold is 0.06 m. After the spray painting is finished, immersing the rubber mold into coconut oil fatty acid diethanolamide serving as a stabilizer to promote pigments to be attached to the rubber mold and stabilize the chemical performance of the rubber mold, and then drying the rubber mold by using an oven with the constant temperature of 50 ℃;

and step four, dipping the rubber mold sprayed with the pattern into the raw material rubber latex liquid and drying the dipped rubber mold.

And fifthly, curling. The rotary drum is in contact with the glued mould in the direction vertical to the mould, and the rotation of the mould and the rotation of the rotary drum generate an angular force to roll up the glue on the mould.

Sixthly, washing off the product on the die by water, and drying;

and seventhly, performing quality inspection, including 100% electronic pinhole detection (a common electrical inspection machine), blasting volume and pressure detection (an experimental method: GB/T7544 supplement 2019 appendix H, AQL 1.5), length detection (an experimental method: GB/T7544 supplement 2019 appendix D, requirement > -160 mm), width detection (an experimental method: GB/T7544 supplement 2019 appendix E, 52 +/-2 mm), and pinhole detection (an experimental method: GB/T7544 supplement 2019 appendix M, AQL 0.25).

The product of the invention is inflated and pressurized in the sleeve body, and characters and colors can still be seen when the pressure is more than or equal to 0.8kpa, and the existing product can hardly be seen. After the air is inflated and pressurized to 1.0KPa, the air is deflated, the spraying part of the product of the invention can not be layered, and the existing product can be layered.

And eighthly, packaging, detecting and warehousing the product.

Table 1 results of performance testing of printed condoms prepared in example 1

In the column of qualification in Table 1, 200[7,8] means: 200 sampling checks are carried out, wherein 7 or less are qualified, and 8 or more are unqualified; the other meanings are similar.

From the above examples, the present invention provides a method for preparing a printed condom, comprising the following steps: mixing latex stock solution, casein, ammonia water, a dispersing agent, sulfur, an accelerator, zinc oxide and an anti-aging agent, pre-vulcanizing, centrifuging and standing to obtain a latex raw material; immersing a mould into the latex raw material, drying after uniformly adhering, immersing into the latex raw material again, drying again, cleaning impurities, spraying, immersing into a stabilizer again, immersing into the latex raw material after drying, curling, and demoulding to obtain the printing condom; the pigment adopted by the spray painting comprises (200-400) g, (5-10) mL, (7-20) g, (13-35) g of resin, penetrant, dye and ammonium salt; the resin is prepared from phenolic resin and tetrabutylammonium iodide. The pigment adopted in the method does not react with latex, does not delaminate and fade after being sprayed and painted, and the printed condom with stable performance is obtained; the prepared condom has higher bursting pressure; no visible pinhole; the edge curl and the adhesive film are seriously bonded without breakage, lack or serious deformation basically; the sealing performance is good.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.