Advantages of carton packaging materials:
Because paper packaging materials have the above characteristics, the amount of paper packaging materials is increasing, paper packaging materials in the field of packaging, in addition to the above characteristics, but also has the following unique advantages:
1.raw materials are widely sourced, low cost, variety, easy to form mass production;
2. good processing performance, easy to compound processing and excellent printing performance;
3. with a certain mechanical parts, light weight, good buffer parts;
4. good health and safety;
5. the waste can be recycled, no white pollution.
Performance of paper packaging materials:
As a modern packaging material, paper is mainly used to produce cartons, paper boxes, paper bags, paper containers and other packaging products, among which corrugated cardboard and cardboard boxes occupy the dominant position of paper packaging materials and products; By a variety of materials composite paper and cardboard, special processing paper has been widely used, and will partly replace the application of plastic packaging materials in food packaging, in order to solve the environmental protection problems caused by plastic packaging.
Paper packaging materials used for food packaging, its performance is mainly reflected in the following aspects.
1. printing performance
Paper and cardboard absorb and bond ink ability is strong, good printing performance, therefore, in packaging is often used as printing surface. The printing performance of paper and board is mainly determined by surface smoothness, gluing, elasticity and adhesion.
2. health and safety performance
In the process of paper processing, especially chemical pulping, there are usually some chemical substances left (such as alkali liquor and salts left in the kraft pulping process), so we must choose all kinds of paper and cardboard correctly and reasonably according to the packaging content.
3. barrier performance
Paper and board are porous fiber materials, which have a certain degree of permeability to water, gas, light, grease, etc., and their barrier is greatly affected by temperature and humidity. Single paper packaging materials generally can not be used for packaging moisture, fat content and high barrier requirements of the food, but can be processed through the appropriate surface to meet the barrier performance requirements.
4. mechanical properties
Paper and board has a certain strength, stiffness and mechanical adaptability, its strength is mainly determined by the paper material, quality, thickness, processing technology, surface conditions and certain temperature and humidity conditions; In addition, paper also has certain folding, elasticity and tearing, etc., suitable for making molding packaging containers or used for wrapping packages.
Ambient temperature and humidity have a great influence on the strength of paper and board, the change of air temperature and humidity will cause the change of balance moisture of paper and board, and finally make the mechanical properties of different degrees of change. The mechanical properties of paper change with relative humidity. Because paper fiber has great water absorption, when humidity increases, the tensile strength and tear strength of paper will decrease and affect the usability of paper and cardboard. A relative temperature and humidity condition must be maintained when measuring the mechanical properties of paper and board.
5. processing performance
Paper and board have good processing performance, can be folded, and can be sealed by a variety of ways, easy to process into a variety of performance of the packaging container, easy to realize mechanized processing operation, has a mature production process. Good workability allows for the design of various functional structures (such as Windows, handles, partitions and design displays). In addition, through appropriate surface processing, paper and cardboard can provide the necessary moisture-proof, insect-proof, barrier, heat sealing, strength and physical properties, expand its use range.
The experience content is for reference only. If you need to solve specific problems (especially in legal and medical fields), you are advised to consult professionals in related fields in detail.
