There are differences between shrink packaging and stretch packaging technologies, and they have similarities.
(1) If the product is adaptable, the shrink wrap can fasten the goods on the tray, but it is not suitable for frozen or heat-hungry foods.
(2) In terms of adaptability to the circulation environment, the shrink wrap can be stored in the open air and the stretched packaging needs to be stored in the warehouse. The shrink wrap has good moisture resistance but poor air permeability and is not suitable for low temperature operation, while the stretch wrap has poor moisture resistance but good ventilation and can be operated in the freezer compartment.
(3) From the perspective of equipment investment and packaging costs, shrink packaging is more expensive than stretch packaging. Shrink wrap is not easy to control but the appearance of the package is uniform; the stretch wrap is easy to control but the stress at the edges and corners is too large and it is easily damaged and broken.
(4) In terms of stacking adaptability, shrink packaging does not adhere to each other, and stretch packaging is easy to stick due to self-adhesion between packages, and it is easy to tear the film during handling. For products with high sealing requirements, heat shrink packaging is the best choice.
(5) Shrink-wrapping and stretch-packing technologies have certain complementarities. In comparison, stretch packaging is easy to operate, saves energy, and has obvious advantages.
(6) When choosing between the two methods, comprehensive consideration must be given to all aspects of materials, equipment, processes, energy, and costs, and the right choices should be made depending on the specific circumstances.
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An innovative scientific and technological enterprise integrating design and development of shoe materials (soles), mold manufacturing, shoe materials (soles) production and marketing services; the company's technical research and development team, composed of more than ten masters, doctors and experts, has strong research and development technical force, and currently has dozens of rubber and plastic new material invention patent technology and utility model patent technology. With China leather and shoemaking industry research institute, we have jointly established "rubber shoe material research institute" and "zhidahang new material international research and development center". With "comfort, fashion and environmental protection" as the core consumption elements, the rubber leisure sole researched, designed and produced by the company has become the first choice of many leisure Shoes brands and enterprises in China, and is highly praised and welcomed by customers and consumers in the industry. The products have always led the trend, fashion and direction of domestic leisure shoes market. Cooperate closely with many famous shoes brands at home and abroad;
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