Cosmetic packaging is more complex, including the first layer of packaging, two or three layers of packaging and outer transport packaging. (Such as plastic bottles, glass bottles), hoses (such as plastic hoses, composite hoses, metal hoses), bags (such as paper bags, plastic bags, composite bags), and so on ; Two or three packaging categories include boxes (such as cartons, plastic boxes, metal boxes), labels, plastic, etc .; outer transport packaging, including buffer packaging. Different levels of packaging appearance requirements are common, but also has its inherent special. The appearance of the common requirements, including packaging and printing patterns and writing should be neat, clear, easy to fall off, color should be uniform and so on. The particularity of the appearance requirements varies according to the different categories of packaging.
For bottles of packaging, the requirements of the bottle should be smooth, smooth, uniform thickness, no obvious scars and deformation, there should be no cold burst and cracks; bottle should be correct, smooth, should not have burr (hair), thread, With the structure should be intact, correct; bottle and cover with the tight, no slip teeth, loose and leak phenomenon; bottle should be kept clean inside and outside.
For the bag packaging, requiring it should not have obvious wrinkles, scratches, air bubbles, color should be uniform; sealing to be strong, there should be no openings, perforation, leakage (paste) phenomenon; composite bag should be solid, Uniform, no shedding.
In order to achieve sustainable development of packaging, bio-based biodegradable materials came into being, and gradually become a hot topic in the industry. Biodegradable material refers to the use of renewable substances, such as crops, trees, other plants and their residues and inclusions as raw materials, through biological, chemical and physical methods such as a new type of material.
Products made from bio-based biodegradable materials are usually green, environmentally friendly, renewable, and biodegradable.
At present, the United States DuPont, Germany BASF and other large companies are actively expanding bio-based chemicals business. As a packaging manufacturer of packaging development workers, I hope that the future of biodegradable materials can be used in cosmetic packaging, and promote the sustainable development of cosmetics packaging.
Structural design requirements
For cosmetics, the first layer of packaging is very important, directly related to product quality. Cosmetics the first layer of packaging are mostly plastic containers, plastic container structure design is inseparable from the choice of materials and molding process. Commonly used plastic materials can be divided into soft materials and hard materials from the two major categories, that is, PE, PP and other representative of the typical soft materials and ABS, PMMA as the representative of the typical hard materials.
Plastic container common molding process is injection molding, hollow molding, injection blow molding, etc., but no matter what kind of molding process, plastic container sealing design and capacity design is essential.