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Water absorbing tray and preparing method thereof

A tray and water-absorbing layer technology, applied in the field of food packaging, can solve the problems of easy sticking on the surface of fresh products, inconvenient use, etc., and achieve the effects of extending storage time, convenient use, and enhancing water-absorbing capacity

Pending Publication Date: 2017-12-22
佛山碧嘉高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional fresh-keeping tray has an absorbent pad, which is easy to stick to the surface of fresh products after absorbing water, which is inconvenient to use

Method used

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  • Water absorbing tray and preparing method thereof

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preparation example Construction

[0040] This embodiment also provides a method for preparing a water-absorbing tray, which includes the following steps:

[0041] Put the dry raw materials into the continuous extrusion foaming equipment, heat and melt, then add foaming agent and mix evenly, and foam to prepare foamed sheet;

[0042]The above-mentioned foamed sheet is passed through a blister machine to prepare an inner tray body and an outer tray body, both of which include a chassis and a side wall, and the chassis and the side wall cooperate to form a cavity structure with an opening at the top;

[0043] Forming a plurality of holes through the chassis on the chassis of the inner pan body;

[0044] A layer of water-absorbing material is evenly spread on the upper surface of the chassis of the outer disc body to form a water-absorbing layer, and the inner disc body is bonded to the outer disc body through heat sealing technology.

[0045] Specifically, in one embodiment, the blowing agent is carbon dioxide o...

Embodiment 1

[0049] Add the dry polylactic acid 4032D to the continuous extrusion foaming equipment, heat and melt, then add the foaming agent butane and mix evenly, and respectively prepare open foams with a foaming ratio of 25 times, an opening ratio of 80%, and a thickness of 3mm. A foamed sheet with a cellular foam structure, and a foamed sheet with a foaming ratio of 10 times, a closed rate of 75%, and a thickness of 2 mm with a closed-cell foamed sheet;

[0050] The above-mentioned foamed sheet is made into an outer tray body and an inner tray body respectively through a blister machine, the inner tray body and the outer tray body both include a chassis and a side wall, and the chassis and the side wall cooperate to form a cavity structure with an opening at the top;

[0051] 300 holes are designed on the chassis of the inner plate, the hole diameter is 1mm, and the hole depth is 3.1mm;

[0052] Sprinkle 5g of BLD-70A water-absorbing resin evenly on the upper surface of the chassis o...

Embodiment 2

[0054] Add dry polylactic acid 190 to supercritical continuous extrusion foaming equipment, heat and melt, and then add foaming agent carbon dioxide to prepare open cells with a foaming ratio of 20 times, an opening ratio of 70%, and a thickness of 2mm. A foamed sheet with a foamed structure, and a foamed sheet with a closed-cell foamed structure with a foaming ratio of 8 times, a closed rate of 90%, and a thickness of 1.5 mm;

[0055] The above-mentioned foamed sheet is made into an outer tray body and an inner tray body respectively through a blister machine, the inner tray body and the outer tray body both include a chassis and a side wall, and the chassis and the side wall cooperate to form a cavity structure with an opening at the top;

[0056] 400 holes are designed on the chassis of the inner tray, the hole diameter is 0.07mm, and the hole depth is 2.2mm;

[0057] Sprinkle 7g of sodium carboxymethylcellulose powder evenly on the upper surface of the chassis of the outer...

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Abstract

The invention discloses a water absorbing tray and a preparing method thereof. The water absorbing tray comprises an inner tray body, a water absorbing layer and an outer tray body. Each of the inner tray body and the outer tray body comprises a chassis and a side wall, each chassis and the corresponding side wall are matched to define a cavity body structure with an opening in the top, the inner tray body is located in the outer tray body, and the side wall of the inner tray body makes contact with the side wall of the outer tray body, the chassis of the inner tray body is provided with a plurality of pore passages, and the water absorbing layer is located between the chassis of the inner tray body and that of the outer tray body. The water absorbing tray is convenient to use, high in water absorbing capacity, and is favorable for prolonging storage time of fresh products.

Description

technical field [0001] The invention relates to the field of food packaging, in particular to a water-absorbing tray and a preparation method thereof. Background technique [0002] At present, fresh fruits, vegetables, meat and other fresh products sold in the market are usually pre-packaged in fresh-keeping trays, so consumers can directly buy packaged fresh products without queuing for weighing. The fresh-keeping tray generally includes a plate body and an absorbent pad. The absorbent pad can absorb fresh products, especially meat products, during the fresh-keeping process. However, the traditional fresh-keeping tray has an absorbent pad, which is easy to stick to the surface of fresh products after absorbing water, which is inconvenient to use. Contents of the invention [0003] Based on this, it is necessary to provide an easy-to-use water-absorbing tray and a preparation method thereof. [0004] The technical scheme that the present invention solves the problems of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D81/26B65D77/04
CPCB65D77/046B65D81/264
Inventor 朱锦吴永升李俊刘斐马松琪汤兆宾张传芝李颜志
Owner 佛山碧嘉高新材料科技有限公司
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