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  • The proportion of fluorescent whitening agent used is incorrect, no wonder the color becomes dark and yellow!

    The proportion of fluorescent whitening agent used is incorrect, no wonder the color becomes dark and yellow!

    The recommended proportion of fluorescent whitening agent is 0.02%-0.05%, that is, 200-500g per ton of material. The use ratio and effect of fluorescent whitening agent is a sine wave curve. The most appropriate use ratio has the best whiteness. If the ratio is too low or too high, it will cause ...
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  • Large domestic manufacturers of fluorescent brighteners

    As an industrial additive, fluorescent brightener is widely used in plastics, printing and dyeing, paint and ink, washing, papermaking and other industries. At present, there are not many manufacturers specializing in the production of whitening agents in China. For many end customers, it is part...
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  • How should fluorescent whitening agents be used in hot melt adhesives?

    How should fluorescent whitening agents be used in hot melt adhesives?

    Hot melt adhesive is a kind of plastic adhesive, its physical state can change with the change of temperature, but its chemical properties will not change, so hot melt adhesive has very good environmental performance. Hot melt adhesive itself is solid, which is favored by the advantages of easy p...
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  • Fluorescent whitening agent – an additive that can make plastic bags white!

    Fluorescent whitening agent – an additive that can make plastic bags white!

    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...
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  • Plastic production added fluorescent whitening agent still not white, what’s the matter

    Plastic production added fluorescent whitening agent still not white, what’s the matter

    In all plastic products, white accounts for a large proportion of plastics, such as white crisper boxes, PVC drain pipes, white food bags and so on. In the process of processing, many manufacturers increase their whiteness by adding fluorescent whitening agents. However, many manufacturers will e...
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  • How to choose an effective plastic optical brightener

    How to choose an effective plastic optical brightener

    Plastic is a polymer compound polymerized by polyaddition or polycondensation. Its resistance to deformation is moderate, between fibers and rubber. It is composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and pigments. composition. Because of the ...
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  • Addition method and precautions of fluorescent whitening agent

    Addition method and precautions of fluorescent whitening agent

      Fluorescent whitening agent has always played the role of “monosodium glutamate” in plastic processing. The addition of a few ten thousandths can whiten and brighten plastic products and improve the appearance of plastics. There are many ways to add whitening agents, but their use ...
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  • What are the factors that affect the color of white PVC profiles?

    What are the factors that affect the color of white PVC profiles?

    Influence of Resin Stability PVC resin is a heat-sensitive material, and there are many defects in its molecular structure, such as double bonds, allyl groups, residual initiator end groups, etc. According to the mechanism of free radicals, these defects are easily activated by heat and light to...
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  • Analysis of the advantages and disadvantages of optical brightener OB-1

    Analysis of the advantages and disadvantages of optical brightener OB-1

    With the recent decline in the price of optical brightener OB-1, the cost-effectiveness of OB-1 has become more prominent, and some factories have begun to switch to OB-1 from other models. However, there are still some industries that choose to use optical brighteners OB, KCB, FP-127 and other m...
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  • What type of fluorescent whitening agent is suitable for ink

    What type of fluorescent whitening agent is suitable for ink

    Ink is a viscous colloidal fluid made of pigments, connecting materials, fillers, additives, etc. that are uniformly mixed and rolled repeatedly. The pattern and text are displayed on the substrate through printing. Most of them are used in various markets such as books, packaging and decoration....
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  • What type of optical brightener is suitable for PET plastic

    What type of optical brightener is suitable for PET plastic

    There are many classifications of plastics, and PET plastics are widely used in electronic appliances. For example, switches, electrical sockets, circuit breaker casings and other products, and most of these products are white in appearance.   The appearance of PET plastic is milky white or...
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  • How to choose fluorescent whitening agent for pearl cotton?

    How to choose fluorescent whitening agent for pearl cotton?

               Pearl cotton is composed of numerous independent bubbles produced by physical foaming of low-density polyethylene resin. It is a new type of environmentally friendly packaging material. Ordinary EPE pearl cotton has a wide range of applications, and the general color is white. The prod...
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