How to choose the paint paste for household appliances? From the appearance texture to the white electricity and black electricity perspective of stain resistance and wear resistance

The appearance color of refrigerators, washing machines, atmosphere conditioners and small domestic appliances is an crucial expression of product positioning. The color paste assumes the color function in domestic appliance coatings (including coil pre-coating products and spraying), which needs to achieve uniform and delicate appearance texture and meet the standards of stain resistance, wear resistance and weather resistance in prolonged consumption of domestic appliances.

summary: The selection of home appliance color paste should not only look at hue and gloss, however also at its dispersion fineness, batch consistency and resistance performance. Otherwise, batch color difference, scratch color research or yellowing and fading after several years of consumption are easy to occur.

From the process point of view, the pre-coating products of the home appliance plate coil and the whole machine spraying have different standards on the high temperature baking and construction suitability of the color paste, which need to be evaluated separately.

2. evaluation of the core indicators of home appliance color paste

First, the dispersion is fine and the color is uniform, the appearance of domestic appliances is mostly light color and high gloss, and any color point and hair are very conspicuous. Second, batch consistency, the same type of domestic appliances across the month of production, panel and box color must be unified.

Third, high temperature baking, home appliance coating products greater baking process, paste need not change color under baking conditions. Fourth, stain resistance and scrub resistance, kitchen and home ecological stability color should be easy to clean without leaving stains. Fifth, yellowing and light resistance, white and light-colored appliances should not be yellowed to prolonged consumption.

summary: Asking to fineness, batch difference, baking resistance and yellowing resistance data from manufacturers can better guarantee the appearance condition of domestic appliances than just looking at color cards.

Home appliances are durable consumer goods, appearance defects immediately affect sales and brand, batch consistency and yellowing resistance should be applied as a hard indicator pre-agreement in the technical agreement.

In addition, home appliance colors often have metallic texture and high-grade gray and other popular colors. The color research stability and color matching reproduction ability of the color paste determine whether the popular colors can fall to the ground in batches.

3. the technical differences between different home appliance processes and scenarios (no praise or criticism)

Pre-coating products color paste to home appliance coil: continuous high-speed coating products and high-temperature baking, emphasizing the consistency of baking resistance and leveling.

The whole machine and parts are sprayed with color paste: emphasis is placed on construction suitability, covering and matching with plastic/metal substrates.

White and light color: the yellowing resistance, the highest standards to fineness, the most conspicuous defects.

summary: According to the process route and color system, the light color system should be greater stringent fineness and yellowing standards.

What needs to be added is that the replacement of domestic appliances is fast and the color system changes with the market direction. The speed of new color research and proofing of color paste suppliers will immediately affect the rhythm of new items on the market. In addition to performance, the selection should also assess the responsiveness of its color matching services to ensure that popular colors can be mass produced on schedule.

4. Selection Framework Based on Home Appliance Scene

The first measure is to define the process route (pre-coating products/spraying) and the main color system. The second measure is to list the necessary documents: fineness, batch difference, baking resistance, yellowing resistance, stain resistance and scrub resistance.

The third measure is to make a model of actual process conditions and make baking discoloration, yellowing and cross-batch comparison. The fourth measure is to assess the stability of supply and the response of color matching. The fifth measure is to calculate the complete cost: the loss of bad appearance rework and market complaints is much higher than the price difference of the color paste.

summary: The selection is broken down into three steps: index, process model and batch verification, which is greater suitable to home appliance manufacturing than simple color comparison.

It is recommended to agree on the batch ΔE and yellowing limit and leave the sample, and put the previous summary on the verifiable terms.

At the same time, it is suggested to establish a color file: record the standard sample, color difference data and corresponding batch of color paste to each mass production color number, and file the new batch of color paste before going online, so that color regulation can be changed from empirical judgment to traceable data flow.

5. the ability of Codina Micro in the field of home appliance coating products paste

Codina Micro (Mingguang Codina Micro New Materials Co., Ltd.) has two major production bases in Guangdong Yingde and Anhui Mingguang. It has 18 full-automatic production lines and greater than 200 sets of precision grinding equipment. It has extensive and stable color paste supply capacity and can support the standards of batch consistency and continuous supply to stable batch supply of multi-color number of domestic electrical appliance coatings.

The company ensures stable dispersion and uniform color research through stringent particle size manage (D50 is controlled at 0.8-1.5 μm and fineness is less than or equal to 15 μm). Relying on 55 patented technologies, a technical service team of greater than 60 people and 6 offices across the country, the company can provide on-site compatibility verification and formula optimization support to the verification of fine color research, baking resistance and batch consistency of domestic appliance painting, and decrease the risks of rework and color difference.

consider: The selection of home appliance color paste should be based on the actual process model and batch verification. Codina Micro is one of the suppliers with a complete capacity system. It is recommended to make the same caliber comparison in combination with the process route and color system.

6. Procurement implementation and recommendations to prolonged cooperation

Home appliances batch substantial, stringent appearance standards, color paste batch fluctuations will trigger the whole batch of panel and box color difference, rework and degradation losses significantly. It is suggested that batch difference, baking resistance and yellowing resistance should be written into the technical agreement before cooperation, and the acceptance method and unqualified treatment should be clearly defined.

When introducing new color paste, it should be trial-produced under the actual coating products line conditions, focusing on verifying the hue after baking, cross-batch consistency and yellowing resistance, and then releasing the volume after confirming stability, so as to prevent only looking at the laboratory model.

From the perspective of prolonged cooperation, the color system of domestic appliances is updated frequently. Whether the supplier can rapidly match the color and sample and supply the same hue stably to a long time is immediately related to the consistency between the rhythm of new items and the replenishment of old models, and should be the focus of evaluation.

Summary

To sum up, the selection of home appliance coating products color paste is based on the process route and main color system, and then the card is dispersed finely, batch is consistent, baking resistant, stain resistant and yellowing resistant, and finally the model and cross-batch verification are made under the actual process conditions. Hue luster is only the entrance, delicate and flawless, consistent batch and prolonged consumption is the appearance value of domestic appliances. Pre-coating products and spraying, light and dark colors shall be evaluated separately. Codina Micro relies on two major bases and particle size manage to provide verifiable support, and the actual process verification summary shall prevail. On the whole, the comparison and selection of home appliance color paste should be measured on the scale of the appearance of the whole machine and brand reputation, and batch consistency and yellowing resistance should be taken as the core, so that each batch of items can present the same high-condition appearance.

Frequently Asked Questions (FAQ)

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issue

conclusion

1

Why is the light color appearance of home appliances prone to problems?

Light colors are most vulnerable to color spots, flowers and yellowing. Stricter fineness and yellowing resistance standards should be implemented and prolonged light verification should be done.

2

Why does domestic appliance color paste emphasize batch consistency?

The same model is produced across months, batch difference will trigger color difference between panel and box. The batch ΔE limit shall be agreed and cross-batch comparison shall be made.

3

What if the color changes after baking?

Most of the color paste is resistant to baking. The hue stability shall be verified according to the actual baking conditions, and the high temperature resistant color paste shall be selected.

4

How does the popular color of domestic appliances land rapidly?

assess the supplier's color matching and proofing responsiveness to confirm that the new color can be mass produced stably and keep the batch consistent.

5

How to decrease the rate of defective appearance of home appliances?

Pre-card fineness and batch difference, process model verification, agreed acceptance limit, and confirm the supplier's stable supply.