Since the invention of plastic, there are more than 300 types of plastic. However, no more than 10 types are commonly used in cosmetic plastic packaging: PET, PETG, PE, PP, PMMA, AS, PS, ABS, MS and PCR. The unique chemical and physical properties of each plastic affect its application in cosmetic packaging, resulting in different materials being suitable for each cosmetic packaging product. This also results in different packaging costs for different products. Today, we want to help you choose the best material for your product packaging by giving the characteristics, applications, advantages and disadvantages of these 10 common cosmetic packaging plastics. Plastics Used In Cosmetic Packaging Plastics have the following significant advantages over wood, metal and glass in cosmetic packaging: 1. Lightweight and portability - Lightweight: The density of plastics is much lower than that of glass and metal, which reduces transportation costs and improves user experience (especially for travel packs). - Drop resistance: Not easy to break, better than glass and ceramics, suitable for daily carry. 2. Cost-effectiveness - Raw materials and production: Petroleum-based raw materials are low in cost, and the injection molding/blow molding process is efficient, which is more economical than metal processing or glass blowing. - Transportation savings: Lightweight reduces logistics costs. 3. Design flexibility and functional integration - Various shapes: Can be injection molded into complex shapes (such as pump heads, hoses), with rich transparent/colorful effects (imitation glass texture). - Functional innovation: Easy to match with droppers, air cushions and other components to meet special cosmetic needs (such as vacuum preservation). 4. Durability and safety - Corrosion resistance: Unlike metals, it is not easily oxidized and avoids reactions with cosmetic ingredients (such as acidic products). - Sanitary protection: It can be modified to have antibacterial properties and good sealing properties (such as PET bottles are leak-proof). 5. Environmental adaptability - Mature recycling system: PP, PET, etc. have recycling channels, and biodegradable plastics (such as PLA) are gradually being used. - Reduction design: Thin-wall technology reduces material usage, and the carbon footprint may be lower than glass (full life cycle assessment is required). Shortcomings compared to other materials: - Wood: It is easy to get damp and breed bacteria, and the processing accuracy is low. - Metal: It is heavy and costly, and the thermal conductivity may affect the stability of the product. - Glass: High energy consumption (melting temperature > 1500℃), high risk of breakage. Trends: Sustainable upgrading: The application of bio-based materials such as recycled plastics (r PET) and sugarcane PE is increasing, and the environmental impact is further reduced in combination with light weighting. With the above-mentioned comprehensive advantages, plastic has become the main...

On the fifth day of the fifth lunar month, dragon boats race across the water, and the aroma of zongzi fills the air. As one of China's four major traditional festivals, the Dragon Boat Festival has long been woven into the cultural fabric of the Chinese nation. Amid the lively atmosphere of eating zongzi and watching dragon boat races, have we ever pondered the deeper cultural codes behind this festival? The Dragon Boat Festival is far more than a simple "Poet's Day" or "Zongzi Day"—it is a composite festival carrying multiple layers of cultural memory, its origins revealing a fascinating diversity. From ancient dragon totem worship to commemorating the great poet Qu Yuan, from seasonal customs for warding off epidemics in summer to celebrating loyalty and righteousness, the Dragon Boat Festival is like a prism, refracting the vibrant spectrum of Chinese civilization. The earliest origins of the Dragon Boat Festival can be traced back to summer solstice rituals during the pre-Qin period. Ancient Chinese observed celestial phenomena and noticed that in mid-summer during the fifth lunar month, the Azure Dragon constellation (Canglong Qixiu) ascended to the zenith of the southern sky, as described in the fifth line of the Qian hexagram in the *Book of Changes*: "The flying dragon is in the heavens." This period marked the peak of yang energy, while poisonous insects and diseases began to thrive. The people of the pre-Qin era regarded this day as the "evil month and evil day," forming customs such as bathing in orchid-infused water, hanging mugwort, and wearing fragrant sachets to ward off evil spirits. The *Xia Xiaozheng* records: "On this day, medicine is stored to eliminate toxic vapors," while the *Da Dai Liji* mentions "collecting orchids for bathing." These customs reflect the ancient people's observations of natural cycles and their wisdom in responding to them, forming the earliest cultural layers of the Dragon Boat Festival. As history progressed, the festival became closely intertwined with dragon totem worship. Scholar Wen Yiduo, in his work *Research on the Dragon Boat Festival*, proposed that the festival originated as a dragon totem sacrificial ceremony among the ancient Wu and Yue peoples of the middle and lower Yangtze River regions. With their water-rich environment, these communities revered the dragon as a totem, offering sacrifices through dragon boat racing and throwing zongzi into the water to pray for favorable weather and abundant harvests. Dragon boat races mimicked the form and movements of dragons, while zongzi may have been offerings to water deities. These primitive religious rituals gradually evolved into recreational activities, but their core—reverence for nature and prayers for life—has endured. In regions like the Miluo River in Hunan and Suzhou in Jiangsu, ancient rituals worshiping dragon gods are still preserved today, serving as vivid evidence of this origin theory. During the Warring States period, the cultural...