Development of PW-New Aerosol Packaging Shoes Polish (Part 2)

Table 2 Effect of soft wax content on product performance

Content Brightness Rub Resistance (0.5%)
0 1.3 Failed
5 1.8 Qualified
10 2.1 Qualified
15 2.3 Qualified
20 2.1 Qualified

Note: Hard wax content is 2%.
From the above table, it can be seen that the amount of soft wax is more suitable for 10% to 15%, and the amount of soft wax can be reduced by the amount exceeding the general assembly.
2.1.3 Effect of solvents Table 3 Effect of solvent dosage on product performance (25°C)

Solvent amount (%) Drying time (s) Spray effect
5 10 No atomization, blocking valve
10 15 Atomized Particles, Micro-locking Valves
15 30 Atomization is good, no valve
20 65 atomizing, no valve
25 215 atomization, no valve
30 280 atomization, no valve

The choice of solvent should consider the low cost, no chemical reaction with other ingredients, non-toxic and tasteless. In this product, white oil and polysiloxane (206) were chosen as the solvent. Its main function is to improve the atomization effect and increase the penetration and infiltration of wax into the leather. The amount of solvent has a certain influence on the product performance. If the amount is too large, the drying time is too long, which affects the use effect of shoe oil aerosol. With other factors fixed, the effect of solvent dosage on product performance is shown in the table. 3 shows.
As can be seen from Table 3, when the amount of solvent is less than 10%, the product atomization condition is not ideal, and when the amount of solvent is too large, the drying time is too long to use and is inconvenient. Therefore, the amount of solvent used is 10% to 15%. More appropriate.
2.1.4 Influence of propellant content on product The type and content of propellant also have a certain influence on the product performance. The content of propellant is high, the internal pressure of the container is too large, and it is easy to explode, and the brightener content in atomized particles is lean and influences the use. Effect; Too little propellant content may result in poor atomization, which can easily block the valve and cause uneven spraying. The influence of the propellant content on the atomization effect is shown in Table 4.
Table 4 Effect of propellant content on atomization (20°C)

Content Atomized Particle Diameter (μm) Bright Value
30 73.6 2.0
40 62.4 2.2
50 52.6 2.3
60 44.2 2.3
70 41.0 2.2
80 36.4 2.0

Note: The propellant adopts LPG, the other factors remain unchanged, and the injection time is 1s.
From Table 4, it can be seen that the propellant content of this formula is 50% to 60%, the spray is even, the shoe polish consumption is normal, and the light value is high.
In summary, the final determination of the ratio of various raw materials is shown in Table 5.
Table 5 raw material mix table

Raw material name content (%)
Beeswax 1.0 to 1.5
Worm wax 0.5 to 1.0
Paraffin 5~10
Wax 5~10
Propellant 60～70
Solvent 10-15
Antistatic essence amount right amount of essence

2.2 Product practicality safety evaluation 2.2.1 The practical performance test will be made of PW-composite shoe oil aerosol according to the above formula randomly selected 5 British aerosol products Aliant and domestic paste shoe polish in the use of performance For comparison, the results are shown in Tables 6 and 7.
Table 6 Comparison of product performance indicators

Sample Atomized Particles (μm) Brightness Rub Resistance Using Residual Rate (%) Rate Homemade Products 52.1 2.35 Level 3 8.3
Alicant 55.6 1.81 Level 2 1.3
Domestic paste shoe oil does not atomize 2.18 Level 3 1.3

Table 7 Product Usage Comparison Sample Alicit(%) Domestic Paste Polishing Oil Use Procedure Injection Bright Polishing Oil Bright Polishing - Cool Dry-Buffing Polishing Time 20～30 30～40 300～350
Odour Flower aroma No organic solvent Odor oiling tool No oil brush, polishing cloth Contamination No dirt on hands No dirt on hands No color on hands

This product and various types of products comparison test results show that this product and British products Alicomt atomization performance is better, easy operation and use, no pollution. This product is superior to creamy shoe polish and British Ali-camt in terms of brightness and abrasion resistance, domestic paste shoe polish has good effect on rubbing resistance and lightness, but it is cumbersome to use, polluting, and extremely inconvenient.
2.2.2 Safety Evaluation To ensure the safety and stability of the product during storage and transportation, the corrosion resistance, leakage, maximum internal pressure, heat and cold stability and impact of the product according to the method in 2.4 Fall test is carried out for inspection. See Table 8 for the situation.
Table 8 Product Storage and Transportation Safety Test

No. 50°C±1 Internal Pressure Leakage 50°C Frozen Stability Drop Test
1 0.61 No stable leak detected
2 0.58 No stable leak detection
3 0.62 No stable leak detection
4 0.60 No stable leak detection
5 0.59 No stable leak detection

The test results show that PW-shoe oil mist is stable, safe and reliable, and has good storage stability. It can be used as a commodity circulation product.
3 Conclusion a. The ratio between the components in the product has a great influence on the brightness, abrasion resistance and atomization of the product. After orthogonal experiments, the best formula is: hard wax 2%, soft wax 15% , Solvents 10% to 15%, propellants 60% to 70%;
b. The performance of PW-shoe oil mist agent is superior to that of cream shoe polish in that it has the advantages of convenience, high efficiency, strong light, long-lasting, and no pollution.
c. The safety inspection shows that the product is stable, safe and reliable in conformity with the storage and transportation requirements.