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Composite film material for manufacturing liquid package sealing tape and preparation method thereof

A composite film and sealing strip technology, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve problems such as easy stretching and cutting performance, and achieve easy winding, increased adhesive force, and reduced friction coefficient. small effect

Inactive Publication Date: 2016-12-07
程淋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of domestic aseptic packaging, the continuous improvement of the packaging speed of the filling machine and the continuous expansion of the packaging range, there are more and more contents with strong acid and alkali such as wine, vinegar, sauce, etc. At present, domestic nylon co-extrusion film preparation Due to the disadvantages of easy stretching and poor cutting performance, the sealing strip has certain limitations in use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation of composite film material of the present invention:

[0025] a. The double-sided corona biaxially stretched polyester film is used as a base material, and one side of the base material is evenly coated with a primer to form a composite surface and dried in an oven. Molten metallocene polyethylene resin, low-density polyethylene resin, and use ozone generating equipment to blow ozone evenly on the surface of the metallocene polyethylene resin and low-density polyethylene resin that are leached out, and the composite pressure roller and the low-density polyethylene resin Under the action of cooling roller pressing on pockmarked surface, the metallocene polyethylene resin and low-density polyethylene resin are sequentially compounded on the primary composite surface, and the intermediate film is obtained by trimming and winding; the intermediate film is put into the curing A ripening reaction is carried out in the chamber;

[0026] b. After the intermedia...

Embodiment 2

[0032] The preparation of composite film material of the present invention:

[0033] Identical to the preparation method of Example 1, only the process parameters have been adjusted, specifically:

[0034] The amount of glue applied to the polyurethane primer is 0.5g / m 2 , the oven temperature is 100°C, the ozone concentration is 60mg / L, and the ozone flow rate is 6Nm 3 / h.

[0035] The temperature of the metallocene polyethylene resin in the operation a is 300°C, and the temperature of the low density polyethylene resin is 340°C; the temperature of the metallocene polyethylene resin in the operation b is 270°C.

[0036] In the operation a and operation b, the curing chamber is kept at a constant temperature of 60° C., and the curing reaction time is 10 days.

Embodiment 3

[0038] The preparation of composite film material of the present invention:

[0039] Identical to the preparation method of Example 1, only the process parameters have been adjusted, specifically:

[0040] The amount of glue applied to the polyurethane primer is 0.3g / m 2 , the oven temperature is 100°C, the ozone concentration is 55mg / L, and the ozone flow rate is 5.5Nm 3 / h.

[0041] The temperature of the metallocene polyethylene resin in the operation a is 280°C, and the temperature of the low density polyethylene resin is 325°C; the temperature of the metallocene polyethylene resin in the operation b is 250°C.

[0042] In the operation a and operation b, the curing chamber is kept at a constant temperature of 50° C., and the curing reaction time is 9 days.

[0043]The performance parameters of the composite film material prepared by the foregoing embodiments are shown in the table below:

[0044] Test items

[0045] In summary, the strip-shaped sealing strip ...

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Abstract

The invention belongs to the field of sealing materials, and in particular relates to a composite film material used for making liquid packaging sealing strips. The invention comprises a double-sided corona biaxially stretched polyester film layer, wherein one side of the double-sided corona biaxially stretched polyester film layer is sequentially compounded with a first metallocene polyethylene resin film layer, a first low-density polyethylene resin film layer, the second metallocene polyethylene resin film layer, the other side of the double-sided corona biaxially stretched polyester film layer is sequentially compounded with the third metallocene polyethylene resin film layer, the second low density polyethylene resin film layer , the fourth metallocene polyethylene resin film layer. The strip-shaped sealing strip prepared from the composite film material of the present invention is not easy to stretch and cut off during use, and has strong peel strength, good low-temperature heat-sealability, smoothness and medium resistance. Composite film materials provide domestic manufacturers with more choices about sealing strips for liquid aseptic liquid packaging.

Description

technical field [0001] The invention belongs to the field of sealing materials, and in particular relates to a composite film material used for making liquid packaging sealing strips and a preparation method thereof. Background technique [0002] With the continuous development of domestic aseptic packaging, the continuous improvement of the packaging speed of the filling machine and the continuous expansion of the packaging range, there are more and more contents with strong acid and alkali such as wine, vinegar, sauce, etc. At present, domestic nylon co-extrusion film preparation Due to the disadvantages of easy stretching and poor cutting performance, the special sealing strip has certain limitations in use. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a composite film material for making liquid packaging sealing strips and a preparation method thereof. The sealing strip prepared by the composite film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/36B32B27/16B32B33/00B32B37/10B32B37/15B32B38/00
CPCB32B27/32B32B27/08B32B27/16B32B27/327B32B27/36B32B33/00B32B37/10B32B37/153B32B38/0004B32B38/0012B32B2255/10B32B2255/26B32B2307/31B32B2307/50B32B2307/54
Inventor 程淋
Owner 程淋
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