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Factors to be considered in process design of composite packaging bags

1、 Raw materials of composite packaging bags

Whether the source of raw materials is stable and whether specific raw materials can be purchased, including various general film substrates, various functional substrates, various inks, adhesives, functional coating materials, various resins, additives, etc.

Whether the price of raw materials is appropriate, the performance of substitutes, and the specifications of raw materials are appropriate.

2、 Equipment factors of composite packaging bags

The adaptability of printing equipment to materials, whether it has a reversal device, the maximum and minimum specifications of the substrate to be applied, the printing quality level that the printing equipment can achieve, the type of printing equipment and its impact on the printing quality, such as gravure printing, flexographic printing, and silk screen printing

Composite specification range of composite equipment. The type of composite equipment is an important factor that determines the performance of composite materials. The dry-type composite machine can produce various packaging materials, which is the most widely used, but the cost is relatively high. Extrusion composite includes single-layer coating, single-layer extrusion composite, double or multiple series extrusion composite, co-extrusion composite, etc. The series composite equipment can composite 5-13 layers of materials at one time, and co-extrusion composite can be skin functional materials.

The specification range of the cutting material of the cutting equipment, the variety of the cutting material, the minimum and maximum cutting size, etc.

The bag making equipment department can make the largest and smallest specifications of bags, such as three-sided sealing composite bags, three-dimensional bags, zipper bags, etc.

3、 Influence of product requirements of composite packaging bags on process

① The amount of glue applied to different products is different.

② The curing time and temperature of different products are different

③ The requirements for corona of materials are different. The intermediate layer materials need to be treated on both sides. The corona face of the fuse sealing bag is outward. The heat sealing part cannot be treated with corona.

④ Nylon production must be timely wrapped to prevent moisture.

⑤ High opening requirements, pay attention to powder spraying

⑥ The product is required to be flat, smooth, scraped and dry, flexible and easy to be squeezed.

⑦ The back sealing bag is used for anti-wrinkle and shrinking

⑧ Food and drug packaging bags need to be inspected to prevent foreign matters from entering

⑨ According to the raw materials and working environment, adjust whether the printing is empty and whether the preheating temperature is increased. Whether the production speed is adjusted and the adhesive ratio is changed.