High-strength eight-side sealing feed packaging bag and preparation method thereof

Abstract

The invention provides a high-strength eight-side sealing feed packaging bag and a preparation method thereof. The feed packaging bag comprises a bottom surface, first side faces and second side faces, and the front and rear sides above the bottom surface are provided with the first side faces symmetrically; the right and left sides above the bottom surface are provided with the second side facessymmetrically, and the second side faces are provided with inward side fold lines; the bottom surface is provided with bottom surface fold lines arranged perpendicularly to the side fold lines, and asealing zipper is embedded between the first side faces arranged symmetrically; and the bottom surface, the first side faces and the second side faces are of the same composition structure, and the bottom surface comprises a bottom surface base layer, a thermal insulation layer, a reinforced layer, a bonding layer, a waterproof layer, a frosted finish layer and heat seal film layers. According tothe feed packaging bag, the strength of a finished packaging bag can be improved through the reinforced layer made of high-strength molecular materials effectively, and the finished packaging bag is not liable to break and burst during handling and transportation of heavy feed; and meanwhile, the storage life of the feed in the packaging bag can be prolonged, and the feed packaging bag is high inairtightness, and is not liable to be affected with damp or leak air and the like.

Description

technical field [0001] The invention relates to the field of packaging bag manufacturing, in particular to a high-strength eight-side-sealed feed packaging bag and a preparation method thereof. Background technique [0002] Most of the existing feed packaging belts are traditional three-side-sealed packaging bags, which have a small internal space, and when the packaging bag does not contain the packaged items, the packaging bag cannot be folded into a thin sheet, and the storage is not used. At the same time, the feed During the storage process, the requirements for the storage environment are relatively high. When the feed is stored, it is necessary to avoid direct sunlight and keep the temperature and humidity constant. Large temperature changes between day and night can easily lead to deterioration of the feed, which affects the water resistance of the packaging bags used to store feed. The requirements for sealing and heat preservation are high. At the same time, the qu...

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Problems solved by technology

[0002] Most of the existing feed packaging belts are traditional three-side-sealed packaging bags, which have a small internal space, and when the packaging bag does not contain the packaged items, the packaging bag cannot be folded into a thin sheet, and the storage is not used. At the same time, the feed During the storage process, the requirements for the storage environment are relatively high. When the feed is stored, it is necessary to avoid direct sunlight and keep the temperature and humidity constant. Large temperature changes between day and night can easily lead to deterioration of the feed, which affects the water resistance of the packaging bags used to store feed. The requirements for sealing and heat preservation are high. At the same time, the quality of the feed packaging bags used to hold the feed is often high. In order to avoid the fragmentation of the feed packaging bags during handling and transportation, this leads to high requirements for the strength of the feed packaging bags.

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