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Composite packaging film and preparation method thereof

A composite packaging film and protective film technology, applied in textiles and papermaking, fiber raw material processing, paper coating, etc., to achieve the effect of slowing down the melting speed

Active Publication Date: 2018-05-01
GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this structure can composite the plastic film layer on the surface of the paper layer without the use of adhesives, there are some problems that cannot be ignored when making this paper-plastic composite structure material into ice cream packaging bags.

Method used

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  • Composite packaging film and preparation method thereof
  • Composite packaging film and preparation method thereof
  • Composite packaging film and preparation method thereof

Examples

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preparation example Construction

[0019] like figure 1 and Figure 4 As shown, the embodiment of the present invention provides a preparation method of a composite packaging film, comprising the following steps:

[0020] The first step is to form an electroplated aluminum layer 2 on the upper surface of the paper base layer 1;

[0021] In the second step, a phase change heat absorbing layer 3 is formed on the surface of the electroplated aluminum layer 2 away from the paper base layer 1;

[0022] In the third step, a protective film 4 is wrapped around the paper base layer formed with the electroplated aluminum layer 2 and the phase change heat absorbing layer 3 .

[0023] Based on the preparation method of the above-mentioned composite packaging film, the upper surface of the paper base layer 1 forms an electroplated aluminum layer 2, and the surface of the electroplated aluminum layer 2 away from the paper base layer 1 forms a phase change heat absorption layer 3. When using this composite packaging film t...

Embodiment 1

[0047] The preparation method of the composite packaging film provided by the embodiment of the present invention comprises the following steps:

[0048] The first step is to form an electroplated aluminum layer 2 on the upper surface of the paper base layer 1;

[0049] In the second step, methyl methacrylate, liquid paraffin and sodium dodecyl benzene sulfonate are dispersed in water, mixed and stirred to form an emulsion; wherein, methyl methacrylate, liquid paraffin and dodecyl benzene sulfonate The mass ratio of acid is 3:1:0.2; the solid content of the emulsion is 60%;

[0050] A potassium persulfate aqueous solution with a mass concentration of 0.4% was added to the emulsion, and then reacted under the condition of microwave heating at 50 ° C for 15 min to obtain a phase change reaction system; the quality of potassium persulfate in the potassium persulfate aqueous solution was the same as the The mass ratio of methyl methacrylate is 1:100;

[0051] Saturated brine was...

Embodiment 2

[0057] The preparation method of the composite packaging film provided by the embodiment of the present invention comprises the following steps:

[0058] The first step is to form an electroplated aluminum layer 2 on the upper surface of the paper base layer 1;

[0059] In the second step, methyl methacrylate, liquid paraffin and sodium dodecyl benzene sulfonate are dispersed in water, mixed and stirred to form an emulsion; wherein, methyl methacrylate, liquid paraffin and dodecyl benzene sulfonate The mass ratio of acid is 4:1:0.2; the solid content of the emulsion is 70%;

[0060] Add the azobisisobutyronitrile aqueous solution with a mass concentration of 0.8% to the emulsion, and then react under the condition of microwave heating at 70 ° C for 10 min to obtain a phase change reaction system; The mass ratio of diisobutyronitrile to methyl methacrylate is 1:150;

[0061] Saturated brine was added to the phase change reaction system to break the phase change reaction syste...

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Abstract

The invention provides composite packaging film and a preparation method thereof, relates to the technical field of low-temperature packaging, and aims to slow down the melting speed of ice cream at ahigh room temperature. A method for preparing the composite packaging film comprises steps of: performing formation of an electroplated aluminum layer on the upper surface of a paper substrate layer,performing formation of a phase-change heat-absorbing layer on the surface, opposite to the surface of the paper substrate layer, of the electroplated aluminum layer, and wrapping the exterior of thepaper substrate layer on which the electroplated aluminum layer and phase-change heat-absorbing layer are formed with protective film. The composite packaging film is prepared by using the preparation method of the composite packaging film. The composite packaging film and preparation method thereof are applied to package of cryo-preservation food.

Description

technical field [0001] The invention relates to the technical field of low temperature packaging, in particular to a composite packaging film and a preparation method thereof. Background technique [0002] Ice cream is a summer food that is widely welcomed by consumers. At present, ice cream is generally packaged with paper-based composite film materials. When consumers taste ice cream, they only need to tear open the packaging bag made of the composite film. [0003] Chinese patent ZL03226653.7 discloses a paper-plastic composite structure, which includes a paper layer and a plastic film layer laminated on the paper layer by hot pressing. The plastic film layer can be directly laminated by biaxially stretched polypropylene non-adhesive composite film on the surface of the paper layer. Although this structure can compound the plastic film layer on the surface of the paper layer without using an adhesive, there are some problems that cannot be ignored when the material of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/84D21H19/82D21H19/24D21H19/14D21H19/12D21H19/02
CPCD21H19/02D21H19/12D21H19/14D21H19/24D21H19/82D21H19/84
Inventor 李志明
Owner GUANGDONG BAOJIALI COLOR PRINTING IND CO LTD
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