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3. Coupling agent, (classified as silicon and titanium). The fifth-generation coupling agents—organic silanes, organic titanates, organic aluminates, and organic zirconium acids—have been introduced as fillers for plastics, inks, and papers to increase the degree of branching and interfacial adhesion of resins. , And significantly reduce the thickness of packaging and printing ink graphics, to achieve a solid adhesion. 
4. Lubricant anti-adhesive agent. Can prevent plastic materials and printing ink sticky or adhesion. In the late 1990s, neutral dispersants containing the same amount of anions and cations as the pigments and fillers were not chemically available in the past, because the additives can have good miscibility (compatibility) with many binders.
5. Brighteners. General decomposition temperature is greater than 190 ~ 235 °C, and DBS can withstand high temperature of 360 °C, with excellent leveling, infiltration, its maximum spectral absorption wavelength of 370nm, mainly used for paper, plastic, ink whitening, and can improve A certain degree of whiteness of the package appearance.
6. Heat stabilizers. More than ten kinds of aluminum stearate, calcium stearate, zinc stearate and other additives in the plastic, paper, printing ink, can effectively prevent the molecular material in the process of manufacturing, use and storage of heat and the occurrence of Degradation, cross-linking, discoloration and aging, so as to achieve the purpose of extending the use of time and quality assurance.
7. Nucleating agent. Generally used in the "long-range disorder, close-ordered" crystalline polymer, in contrast to inorganic nucleating agents, can greatly improve the transparency of the packaged products. Therefore, to improve the transparency of the polymer, increase the yield strength and impact strength, shorten the molding cycle and low temperature characteristics, in the same ethylene plastic content, the chain is more evenly distributed and better than the inorganic nucleating agent. Recently, it has been tested on PE packaging film and photosensitive resin plate for better light transmittance.
8. Plasticizers. Is often divided into the main plasticizer and auxiliary plasticizer, but also divided into surface plasticization and plasticization within the structure. Commonly used by chemical structure are: phosphate ester series, phthalate ester series, aliphatic dibasic acid ester series, epoxy compound series, polyester series, oxygenate series, benzene polyacid fat series, fatty acid single Ester series, pyromellitic acid ester series and trioctyl trimellitate and other 11 series of 35 varieties. Its role is due to the insertion of plasticizer molecules between the molecular chains of the polymer, which weakens the attraction between the molecular chains of the polymer, that is, weakens the aggregation between the molecular chains, and increases the mobility and flexibility of the molecular chains. If the plasticizer is used improperly, the paper and plastic products will often be deformed, and the chemical pinholes and binders of the photosensitive resin printing plate and the printing ink will become self-adhesive and cause application failure.
Among the hundreds of additives for packaging and printing materials, the most commonly used cross-linking agent that enables the packaging material to form a horizontal or vertical network structure, the initiator of the polishing agent or photocurable ink, and the prevention of adhesion of goods and packaging Antistatic agents, photo-biodegradable catalysts, etc. The new papermaking method of biotransformation utilizing the efficient separation of cellulose and lignin and the chemical invented in the last two years, as well as a degradable plastic without secondary pollution have proved to be environmentally friendly. Therefore, there is no practical packaging technology innovation without the invention of material additives. 
From "value engineering" to "orthogonality", especially the "backwards algorithm" of inventions and innovations in recent years, packaging materials additives can be innovatively formulated to improve their application range and construction conditions, improve product quality, and give products special functions. Has become an indispensable part of the packaging industry products. The rational and correct selection of additives and the scientific scheduling of production can greatly reduce the cost of packaging and improve economic efficiency. 
Whether it is paper product packaging or plastic product packaging, whether it is auxiliary photoengraving or auxiliary printing inks, there is no packaging material without additives, and there is no additive used without packaging materials; one can make packaging perfect, especially It is an important indicator of the development level of packaging technology that it can make the recycling and reuse of packaging materials. 
In summary, in addition to the application of the above additives, packaging products are also related to color science, optics, acoustics, electricity, magnetism, mechanics, biology, and bionics. The technology of green packaging material additives is a fringe science that is developing. In particular, organic additives continue to develop in the direction of high efficiency, series, economy, non-toxicity, safety, specialization, simplicity, and ease of use.
2. UV absorbers UV-P, UV-326, UV-327, etc. are several types of light stabilizers. They have the ability to absorb some of the UV light in natural sunlight or fluorescent light sources, effectively preventing plastics, inks, etc. in the sun Photolysis of light.