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Ventilation window of package

A technology for packaging and ventilation windows, applied in the field of ventilation windows, can solve the problems of large water loss, discoloration, and high cost

Inactive Publication Date: 2010-04-28
SHANDONG GUTEQI RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is that the ventilation holes can cause cross-contamination among the various packages, that is, the items in one package are rotten or infected with bacteria, which will be transmitted to the items in other packages through gas or overflowing liquid; the second is that the items in the package lose moisture large, which will reduce the appearance, taste and taste of the food, or cause the fruits and vegetables to continue to grow and become old and discolored; third, storage in cold storage and air-conditioned storage will cause odors or cross-contamination with other items; Packaging can improve the above defects, but its air permeability is poor and the cost is high, so it is rarely used in the packaging of fresh food, and it is generally used in the packaging of medicine and medical equipment

Method used

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  • Ventilation window of package
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Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1, as shown in the figure, for the PE fresh-keeping bag used for fresh food packaging, a cross-shaped air vent 2 is opened on the fresh-keeping bag 1, and a circular microporous superfine fiber non-woven fabric with a heat-sealing diameter of 1 cm is covered on the air vent. The membrane 3, forms a breathable window. The microporous ultrafine fiber non-woven membrane 3 has a pore diameter of 0.05-3 μm, of which the pore diameter of 0.08-0.5 μm accounts for about 97% of the number of openings, and the pore diameter of 0.6-3 μm accounts for about 3% of the number of openings. The fibrous non-fabric membrane 3 is made of hydrophobic PP, and the fiber fineness is 0.01-0.1 den. The area of ​​the ventilation window is 0.8cm 2 , the microporous microfiber non-woven membrane 3 has a thickness of 0.5mm, and can hold 0.2mg of powdered preservative under the condition of not affecting the air permeability. The fresh-keeping bag adopting the ventilation window of the pres...

Embodiment 2

[0027] Embodiment 2, as shown in the figure, is used for the 10kg packing box of fruit preservation, has twelve square vents 2 altogether on packing case 1 top and side, sticks microporous microfiber non-woven film on vent 2 3. A breathable window is formed. The microporous ultrafine fiber non-woven membrane 3 has a pore size of 0.01-10 μm, wherein the pore size of 0.01-0.5 μm accounts for about 95% of the number of openings, the pore size of 0.6-1 μm accounts for about 4% of the number of openings, and the pore size of 1-0. 10 μm accounts for about 1% of the number of openings. The microporous superfine fiber non-woven membrane 3 is manufactured by a hydrophobic PP melt-blown method, and the fiber fineness is 0.1-0.8 den. The area of ​​each ventilation window is 25cm 2 , the thickness of the microporous superfine fiber non-woven membrane 3 is 0.6mm, and its opening ratio is above 90%.

Embodiment 3

[0028] Example 3, as shown in the figure, for a composite fresh-keeping bag used for fresh food packaging, when one side of the fresh-keeping bag 1 is heat-sealed and sealed, a microporous ultrafine fiber non-woven film 3 is sandwiched between the two joints, Respectively heat-seal with the limit of microporous superfine fiber non-woven membrane 3, has formed the wide 1cm, the long 50cm strip-shaped breathable window. This method is suitable for thin and long strips or large fresh-keeping bags. The production efficiency of the fresh-keeping bags is high and the fresh-keeping effect is better.

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Abstract

The invention relates to a ventilation window of a package used for preserving fresh and alive foods and prolonging storage period. The ventilation window is arranged on the package, and a microporous ultrafine fiber non-woven membrane is arranged on a ventilation opening (hole) or at the position of a sealing edge or at the position of a seal by heat sealing or adhesion to ensure the package is well breathable, but cannot be permeated by water and can prevent intrusion by bacteria and spread of bacteria. The microporous ultrafine fiber non-woven membrane has a three-dimensional maze type structure and has a high aperture ratio, a ventilation property far better than other microporous membranes, such as nuclear track membranes and corrosion membranes, with a plane structure and low cost. The ventilation window using the microporous ultrafine fiber non-woven membrane made of a hydrophobic high molecular material prevents water in the package from being lost and external water from intruding as well as mouldness.

Description

technical field [0001] The invention relates to a ventilating window for packaged objects, which is a packaging method beneficial to prolonging the storage period of articles. Background technique [0002] In order to prolong the preservation and storage period of fresh foods such as fruits and vegetables, chicken, duck, fish and shrimp, many packages, such as packaging bags, boxes and boxes, are equipped with air holes, and some of them use silicon windows, which are beneficial to prolong the life of fresh food. The storage period of fresh food, but also there are many defects. One is that the ventilation holes can cause cross-contamination among the various packages, that is, the items in one package are rotten or infected with bacteria, which will be transmitted to the items in other packages through gas or overflowing liquid; the second is that the items in the package lose moisture large, which will reduce the appearance, taste and taste of the food, or cause the fruit...

Claims

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Application Information

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IPC IPC(8): B65D77/22B65D33/01B65D25/00B65D81/24B65D81/28B65D85/50
Inventor 钟爱民
Owner SHANDONG GUTEQI RUBBER
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