Tray plastic-wrap-packaging method

Abstract

The invention discloses a tray plastic-wrap-packaging method and belongs to the technical field of food packaging. According to the tray plastic-wrap-packaging method, the heat-sealing operation is performed after a tray filled with food is coated with a layer of plastic wrap through a tray plastic-wrap-packaging machine, so that the plastic-wrap-packaging of the tray can be completed. The tray plastic-wrap-packaging method specifically comprises the following steps: (1) coating the top of the tray with the plastic wrap; (2) coating two sides of the tray with the plastic wrap; (3) coating the front and rear ends of the tray with the plastic wrap; and (4) heat-sealing the bottom of the plastic wrap, so as to complete the plastic-wrap-packaging of the tray. According to the tray plastic-wrap-packaging method provided by the invention, the continuous operation of the the plastic-wrap-packaging of the tray can be facilitated, and the automation can be facilitated; in the plastic-wrap-packaging process, the tray is always in a continuous-conveying state without waiting, so that the speed of the plastic-wrap-packaging of the tray can be improved; and the bottom of the plastic wrap adopted for coating is heat-sealed, so that after the tray is coated with the plastic wrap, the plastic wrap can be firmer and is not easy to loosen or fall off.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a method for packaging fresh-keeping film in trays. Background technique [0002] Tray box plastic wrap packaging is to put vegetables, melons and fruits in the tray first, then wrap a piece of plastic wrap on the vegetables, melons and fruits, and finally fold and seal the plastic wrap to realize the tray plastic wrap packaging of food . [0003] The Chinese patent with the application number CN202010373801.8 discloses a high-speed tray packaging machine. It is recorded in the penultimate paragraph on page 8 of the manual: "The power part is input to the first-stage commutator through the synchronous belt, which is the discharge belt. The driving wheel of the machine provides counterclockwise power and clockwise power for the feeding belt conveyor to realize the synchronous feeding and discharging of the feeding and discharging belt conveyors; at the same time, after the...

AI Technical Summary

Problems solved by technology

[0004] The tray material of the above-mentioned patent is conveyed by the manipulator, the structure is complicated, and it is not conducive to continuous operation; the coating of the film is pressed into the tray from top to bottom, and the film coating of a tray is completed by pressing down, and then the next one is carried out. Covering of the tray; in the process of covering the film, a process of rising and pressing down is required, which increases the time in the process of covering the film. During the process of pressing down, the tray to be covered is in a stagnant waiting state. The continuous transmission and coating of the tray and film cannot be realized, and the speed of coating needs to be improved; in addition, after the tray disclosed in the above patent is wrapped, the bottom is not heat-sealed, and the film is wrapped on the tray.

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