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Air-exhausting flexible packaging bag for frozen vegetables and preparation method thereof

A technology of flexible packaging bags and packaging bags, which is applied in the field of ventilated frozen vegetable flexible packaging bags and its preparation, can solve the problems of high cost, limited film materials, poor pollution resistance, etc., and achieve low cost, simple operation, and long shelf life Effect

Inactive Publication Date: 2011-06-15
惠州宝柏包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vented frozen vegetable flexible packaging bag overcomes the deficiencies of the existing technology, effectively solves the problems of high cost, poor anti-pollution and limited film materials of the existing frozen vegetable flexible packaging bag, and provides a brand new packaging bag with venting performance. The frozen vegetable flexible packaging bag, the present invention can also be applied to fruit and vegetable air-modified vegetables and frozen vegetables microwave oven heating automatic deflation flexible packaging

Method used

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  • Air-exhausting flexible packaging bag for frozen vegetables and preparation method thereof
  • Air-exhausting flexible packaging bag for frozen vegetables and preparation method thereof
  • Air-exhausting flexible packaging bag for frozen vegetables and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0046] In this embodiment, PET / PE transparent composite film is selected as the material of the ventilated frozen vegetable flexible packaging bag of the present invention. The outermost layer of this film is PET (polyethylene terephthalate), the innermost layer is PE (polyethylene), and the middle is adhesive, with a total thickness of 54 μm.

[0047] According to the above-mentioned preparation method, in step 2, the diameter of the vent hole is set to 100μm, the feeding speed of the film feeding device and the speed of the rotating prism lens are set to 100m / min, and the number of punching rows is set to 2 rows, The prepared flexible packaging film with 2 rows of air holes is as follows: figure 2 As shown, the diameter of the air holes 8 is 200 μm, and the hole spacing is 10 mm.

[0048] After the vent hole is finished, the film is cut and processed into a bag body of 200mm×140mm.

[0049] image 3 The venting flexible packaging bag produced by the flexible packaging fi...

Embodiment 2

[0056] In this embodiment, BOPP / PE transparent composite film is selected as the material of the vented frozen vegetable flexible packaging bag of the present invention. The outermost layer of this film is BOPP (biaxially oriented polypropylene film), the innermost layer is PE (polyethylene), and the middle is adhesive, with a total thickness of 62 μm.

[0057] According to the above-mentioned preparation method, in step 2, the diameter of the vent hole is set to 150μm, the feeding speed of the film feeding device and the speed of the rotating prism lens are set to 90m / min, and the number of punching rows is set to 2 rows, The diameter of the air holes is 150 μm, and the hole spacing is 7 mm.

[0058] After the vent hole is finished, the film is cut and processed into a bag body of 220mm×150mm.

[0059] The test results of the vented flexible packaging bag are as follows:

[0060] 1. Store peppers, beans, and cucumbers in the air-vented packaging bag for 6-8 months at -18°C....

Embodiment 3

[0065] In this embodiment, PE co-extruded transparent film is selected as the material of the ventilated frozen vegetable flexible packaging bag of the present invention. This kind of co-extrusion film structure is LDPE (low density polyethylene), PP (polypropylene), LDPE (low density polyethylene) from outside to inside, the thickness ratio between each layer is 1:3:1, and the total thickness is 65μm .

[0066] According to the above-mentioned preparation method, in step 2, the diameter of the vent hole is set to 100μm, the feeding speed of the film feeding device and the speed of the rotating prism lens are set to 90m / min, and the number of punching rows is set to 2 rows, The diameter of the air holes is 100 μm, and the hole spacing is 5 mm.

[0067] After the ventilation holes are finished, the film is cut and processed into bags of 240mm×160mm.

[0068] The test results of the vented flexible packaging bag are as follows:

[0069] 1. Store peppers, beans, and cucumbers ...

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Abstract

The invention discloses an air-exhausting flexible packaging bag for frozen vegetables, belonging to the technical field of flexible packages. A packaging bag body is provided with micron-scale breather holes punctured by laser, wherein the diameters of the breathing holes are 60-300 mu m, the distance between every two breathing holes is 4-500mm, and the breathing holes are in 1-16 rows. A preparation method of the air-exhausting flexible packaging bag comprises the step of: arranging a film on a material feeding device; setting the parameter of the breathing holes on a central controller and sending the parameters to a high-pulse laser source; synchronizing the material feeding speed with the speed of a rotary prism lens so as to ensure that a distribution laser beam can puncture regular and ordered breathing holes on a composite film; and finally, slitting the film punctured with the breathing holes and processing into bags. The packaging bag is made of a PE (Poly Ethylene) composite membrane or a PE multilayer co-extrusion composite membrane, is suitable for flexible packages of frozen vegetables at -18 DEG C, modified-atmosphere vegetables at 0-4 DEG C, and frozen vegetables for microwave oven heating. When being heated, the packaging bag exhausts air automatically so that explosion cannot occur. In addition, because the breathing holes are of micron-scale, the air-exhausting flexible packaging bag has good pollution resistance and causes no potential food safety hazard.

Description

technical field [0001] The invention belongs to the technical field of flexible packaging, and in particular relates to a flexible packaging bag for exhausted frozen vegetables and a preparation method thereof. Background technique [0002] Frozen vegetables are fresh vegetables such as peppers, beans, cucumbers, etc., which are pre-processed, quickly frozen at about -30°C, and then stored, transported and sold at about -18°C. This kind of frozen packaging can make the water in the vegetables quickly form regular and fine ice crystals, which are evenly dispersed in the cells, and the vegetable tissues will not be damaged. At the same time, the biochemical process inside the vegetables cannot be carried out, preventing the growth of bacteria. , Effectively guarantee the nutritional value of vegetables and prolong the shelf life of vegetables. According to the latest report of the British "Daily Mail", frozen vegetables have higher nutritional value than fresh vegetables. Th...

Claims

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Application Information

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IPC IPC(8): B65D33/01B65D30/02B65H35/02
Inventor 崔晓松高虎黄鹤黎昌虎
Owner 惠州宝柏包装有限公司
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