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Which fluorescent brightener should be used for blow molding products

2018-05-10

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Blow molding is one type of plastic processing technology. This type of plastic processing has developed very rapidly and is generally called hollow blow molding. Blow molding products have a wide range of uses and are also consumables in daily life. The editor of Kunshan Juxinchang Company learned that it is basically a container used to hold food, drinks, skin care products, medicines and daily necessities.


The common drinking buckets are also made of PC plastic blow molding The blow molded barrels are processed and produced with very high requirements on appearance, especially whether the appearance is white. These product standards directly affect the sales volume and competitiveness of blow molding products, so choosing a suitable whitening agent is particularly important.
First of all, it is understood that the plastic blow molding process is relatively simple compared to other plastic processing processes. There are basically five processes
1. Plastic parison;
2. On the parison Close the flap grinding tool, clamp the grinding tool and disconnect the parison;
3. Blow the mold toward the cold wall of the mold core, adjust the opening and maintain a certain working pressure during the cooling period;
4. Open the grinding tool and remove the blown parts;
5. Trim the burrs to make the finished product.
The above is the process flow of blow molding. The step of adding the whitening agent is to add it when the ingredients are mixed before production, stir evenly with a mixer, and then proceed to processing. Using this set of meticulous processing techniques, the whitening agent can have significant whitening and brightening effects.
So which whitening agent to choose?
Generally, the most effective whitening agent commonly used in PC blow molding barrels today is ob-1. It allows blow molding products to achieve bright colors that satisfy customers.
A basic characteristic of whitening agent OB-1 is that it is extremely heat-resistant and matches the production temperature of plastic blow molding. What's more, it has good reliability and is not prone to yellowing. It has high compatibility with plastic and has more significant whitening effect.
In addition, the use cost of fluorescent whitening agents is also relatively low. The editor of Kunshan Juxinchang Company recommends that the daily addition amount is about 300 grams per ton of material produced. While improving the level of blow molding products, it will not increase the cost too much.

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