Everyone uses plastic bags in life, such as disposable fresh-keeping bags, supermarket shopping bags, etc. The appearance of plastic bags has brought a lot of convenience to our lives, and it can be said that it is now an indispensable part of our lives. The plastic bags we usually see, no matter whether they are disposable or used many times, manufacturers will add fluorescent whitening agents to improve the white brightness of the products during production. Next, Xiaobian will take you to understand Let’s take a look at how fluorescent whitening agents improve the white brightness of plastic bags.
Most common plastic bags are blow-molded from PE materials, which can usually be divided into transparent plastic bags and opaque plastic bags. However, whether the products have fluorescent whitening agents added or not can not be distinguished by the naked eye from the appearance alone. The difference between the plastic bags with fluorescent whitening agent and the plastic bags without whitening agent is quite obvious.
Like a plastic bag with better transparency, its appearance is brighter, and blue fluorescence can be seen under the irradiation of ultraviolet light. The whitening principle of fluorescent whitening agent is mainly to absorb ultraviolet light, emit blue fluorescence, and neutralize the yellow light of the item to form white light, so the plastic bags we see at this time have relatively good brightness.
Fluorescent whitening agent is known as “industrial monosodium glutamate”. The more the added amount, the better. Of course, if the added amount is too small, the desired effect will not be achieved. Therefore, when used in plastic bags, Subang recommends adding 1/10,000. Two to five ten thousandths, starting with the smallest amount to add to the test. To choose a suitable fluorescent whitening agent for plastic bags, you also need to choose a professional fluorescent whitening agent manufacturer. Shandong Subang Fluorescent Technology Co., Ltd. has been committed to the production and research and development of fluorescent whitening agents for more than 20 years. The whitening agent products are of low price and good quality. If you want to know more about the whitening agent, please consult Shandong Subang!
Post time: Apr-22-2022