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PE blown film, PE composite film, packaging bag and preparation method of packaging bag

A packaging bag and composite film technology, which is applied in the field of double-volume intercommunicable flexible packaging bags and packaging bags, can solve the problem that it is difficult for end consumers to uncover the separation area, the composite film material is insufficiently sealed, and the bag making operation is difficult to control, etc. problems, to achieve the effects of wide controllable range of bag making, improved heat sealing strength, and easy operation

Active Publication Date: 2022-04-22
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this double-chamber one-piece packaging technology is to bond the middle partition area with a virtual seal (reduce the heat-sealing temperature of the heat-sealing ironing strip in the partition area and reduce the heat-sealing pressure) when making the bag, but This kind of bonding will decrease with the passage of time and the movement of polymer chains, especially when the ambient temperature rises, this virtual sealed isolation area will automatically separate; this virtual sealed bag-making operation control is also It is very difficult, especially when the thickness of the composite film material is uneven, there may be insufficient virtual seal (the composite film is too thin), that is, the contents are intercommunicated when filling, or the virtual seal is too large (when the composite film is too thick) , that is, it is difficult for end consumers to uncover the separation area, and the two volumes cannot communicate with each other

Method used

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  • PE blown film, PE composite film, packaging bag and preparation method of packaging bag
  • PE blown film, PE composite film, packaging bag and preparation method of packaging bag
  • PE blown film, PE composite film, packaging bag and preparation method of packaging bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] S1. According to the formula composition of the first composite layer, the first core layer and the first heat-sealing layer in the PE blown film shown in Table 2 below, weigh the components in parts by weight, and then use the three-layer co-extrusion blown film process Film making, PE blown film 1 is obtained;

[0047] According to the formula composition of the second heat-sealing layer, the second core layer, and the third heat-sealing layer in the PE strip shown in Table 2 below, weigh the components in parts by weight, and then use the three-layer co-extrusion blown film process to make a film , to obtain PE strip 1;

[0048] According to the formula composition of the second heat-sealing layer, the second core layer, and the third heat-sealing layer in the PE strip shown in Table 2 below, weigh the components in parts by weight, and then use the three-layer co-extrusion blown film process to make a film , to obtain PE strip 2;

[0049] The properties of each pa...

Embodiment 2

[0058] Renovate the bag-making equipment, add a PE strip unwinding device in the middle of the upper and lower films, use the PE composite film 1 and PE strip 1 prepared above to prepare a double-volume intercommunicable flexible packaging bag; when the PE composite film is on the bag-making machine When it is cut into upper and lower pieces, the width of heat-sealed PE strip 1, that is, the heat-sealed length is 1mm, 2mm, 3mm, 4mm, 5mm, and 6mm respectively. Put the PE strips between two pieces of PE composite film 1, heat seal The temperature is 135°C, the heat-sealing time is 0.5s, and the heat-sealing pressure is 180KPa. Heat-seal the surroundings of two pieces of PE composite film 1 and the 1st area of ​​the PE strip. When the PB content in the heat-sealing layer of the PE strip is 50%, the different Intercommunicable flexible packaging bags 1-6 with separate areas of transverse heat-sealed length;

[0059] Measure the heat-seal strength of the compartmentalized area pack...

Embodiment 3

[0062] Renovate the bag-making equipment, add a PE strip unwinding device in the middle of the upper and lower films, use the PE composite film 1 and PE strip 2 prepared above to prepare a double-volume intercommunicable flexible packaging bag; when the PE composite film is on the bag-making machine When cut into upper and lower pieces, put the heat-sealed PE strips 2 with widths of 4mm, 6mm, 8mm, 10mm, 12mm, and 14mm, respectively, between two pieces of PE composite film 1, and heat-seal them. The temperature is 135°C, the heat-sealing time is 0.5s, and the heat-sealing pressure is 180KPa. Heat-seal the surroundings of two pieces of PE composite film 1 and the 2nd area of ​​the PE strip. When the PB content in the heat-sealing layer of the PE strip is 75%, different Intercommunicable flexible packaging bags 7-12 with separate areas of transverse heat-sealed length;

[0063] Measure the heat-seal strength of the packaging bags with different transverse heat-seal lengths prepar...

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Abstract

The invention relates to the technical field of sealing packaging materials, in particular to a PE blown film, a PE composite film prepared from the PE blown film, a double-volume intercommunicable flexible packaging bag prepared from the PE composite film, and a method for preparing the packaging bag. The intercommunicable flexible packaging bag includes the main body of the packaging bag and a destructible partition. The main material of the packaging bag is PE composite film, and the material of the destructible partition is a piece of PE strip sandwiched between the opposite packaging main body; PB and PE are incompatible Two phases, but under the action of heating, melting and shear stress, they have good mutual dispersion. Therefore, after PB and PE are blended into a film, that is, PE strip, it can achieve a good fusion seal with PE composite film. Under this condition, the incompatible phases of PB and PE in the PE strips are completely separated, with slight peeling deformation, but not obvious tensile deformation, so that they can be separated cleanly. The destructible partition has excellent sealing performance, the heat sealing strength is controllable and stable, and the bag making operation is simple.

Description

technical field [0001] The invention relates to the technical field of sealing packaging materials, in particular to a PE blown film, a PE composite film prepared from the PE blown film, a double-volume intercommunicable flexible packaging bag prepared from the PE composite film, and a method for preparing the packaging bag. Background technique [0002] There are some mixture products with different water content, such as solid-liquid mixed products, dried fruit and nuts with different water content. In order to extend the shelf life of its mixed products or maintain their original flavors, traditional packaging adopts the method of mixed packaging plus desiccant or separate packaging; and the way of mixed packaging plus desiccant is likely to cause moisture in the contents of wet ingredients The content of the dry ingredients absorbs water, which eventually leads to the mixture being easily deteriorated and moldy, and the shelf life is reduced; the contents are packaged in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B33/00B32B7/12B32B37/06B32B37/10B32B37/12B32B27/08B32B27/10B65D30/02B65D30/22B65D33/00B65D81/32
CPCB32B27/327B32B27/32B32B33/00B32B7/12B32B37/06B32B37/10B32B37/12B32B27/08B32B27/10B65D31/00B65D31/12B65D33/00B65D81/3266
Inventor 张和平潘健汪学文陈旭张红斌
Owner HUANGSHAN NOVEL
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