High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof

A technology with a low coefficient of friction and high stiffness, applied in chemical instruments and methods, synthetic resin layered products, flexible coverings, etc., can solve the problem of poor smoothness of packaging bags, inability to carry out radiation treatment, and limit product applications field and other issues, to achieve the effect of excellent protection effect, humanized and rationalized design, and strong adaptability of equipment

Active Publication Date: 2014-05-07
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the problems existing in domestic pet food packaging are as follows: 1) VMPET or AL is used as the barrier layer, but in this way, the content cannot be seen directly, and radiation treatment cannot be performed, which limits the application field of the product; 2) the bag body The stiffness is not enough, the shelf effect is not good
Some manufacturers improve the stiffness of the bag by increasing the thickness of the bag body, which greatly increases the production

Method used

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  • High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof
  • High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof
  • High-stiffness puncture-resistant low-friction coefficient composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0058] 1. Preparation of high stiffness and puncture resistant PE film

[0059] Add the composite layer resin, middle layer resin and heat-sealing layer resin into the three barrels of the extruder respectively, and form a melt through the action of the heating device and the extruder screw, and extrude through the die opening of the ring die to form a tubular shape After the tube leaves the die, it is blown into a bubble film under the action of blowing compressed air from the center hole of the die head; the bubble film is pulled up by the traction mechanism, cooled by the air ring Blister clamping and flattening; the double-layer film is formed by clamping with traction rollers, and then the outer surface is coronad by a corona device, trimmed and divided into pieces, and wound into rolls to obtain a high-stiffness and puncture-resistant PE film. The production speed is 20m / min, and the melt pressure of the extruder is less than 45MPa.

[0060] 2. Printing of KPET film

...

Example

[0078] Embodiment 1-5

[0079] ① Preparation of high stiffness and puncture resistant PE film

[0080] Add the composite layer resin, middle layer resin and heat-sealing layer resin into the three barrels of the extruder respectively, and the formulations of each layer of resin in each embodiment are shown in Table 3. After the heating device and the extruder screw, it forms a melt, and extrudes through the die opening of the ring die to form a tube; Blow up into a bubble-like film; the bubble-like film is pulled up by the traction mechanism, cooled by the wind ring, and flattened by the herringbone plate; the double-layer film is formed by being clamped by the traction roller, and then the outer surface is corona by the corona device , trimmed into pieces, and wound into rolls to obtain high stiffness and puncture-resistant PE film. The production speed is 20m / min, and the melt pressure of the extruder is less than 45MPa.

[0081] table 3

[0082]

[0083]The thickness...

Example

[0101] Embodiment 6-12

[0102] The preparation of the composite film is the same as in Example 1, except that the amount of HDPE-HTA108 added in the middle layer accounts for 10%, 20%, 30%, 40%, 50%, 60% and 70% of the total weight of the middle layer material. And detect the elastic modulus of 7 kinds of composite membranes prepared respectively, please refer to figure 1 . It can be seen from the figure that when the addition amount of HDPE-HTA108 is between 10% and 50%, the elastic modulus of the film increases significantly. When the addition amount reaches about 60-70%, the elastic modulus does not change significantly. However, when the added amount increases to more than 70%, the film will be prone to embrittlement, which will easily cause problems such as decreased puncture resistance.

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Abstract

The invention belongs to the technical field of package materials, and in particular relates to a high-stiffness puncture-resistant low-friction coefficient composite film and a preparation method of the high-stiffness puncture-resistant low-friction coefficient composite film. The high-stiffness puncture-resistant low-friction coefficient PE thin film orderly comprises a composite layer, an intermediate layer and a heat-seal layer, the composite layer comprises low-density polyethylene, metallocene linear low density polyethylene and a processing agent; the intermediate layer comprises high-density polyethylene, metallocene linear low density polyethylene and a processing agent; and the heat-seal layer comprises low-density polyethylene, metallocene linear low density polyethylene and the like. The high-stiffness puncture-resistant low-friction coefficient composite film provided by the invention is high in barrier property and capable of well satisfying the quality-guaranteeing demand of content, and maintaining the quality and flavor of the content, so that the content has long expiration date. The puncture resistance is good so that objects such as sharp bone and fishbone can be packaged, the phenomenon that the bag is punctured has small possibility of occurring. The stiffness is high so that the packaged content can be directly distinguished clearly, and the shelf effect is good. The friction coefficient is low and stable so that the film has good equipment adaptation, and the package efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a composite film with high stiffness, puncture resistance and low coefficient of friction and a preparation method thereof. Background technique [0002] With the development of the economy and the diversification of commodity forms, the packaging also shows the characteristics of diversification. Stand-up bag flexible packaging is a kind of packaging that is different from other plastic containers. It is a packaging with a horizontal support layout at the bottom, which can stand on its own. The color is rich, and the pictures and texts improve the product level and show the excellent brand image of the product. It is suitable for supermarkets. Shelves for sale. Stand-up pouch packaging is widely used in fruit juice drinks, inhalable jelly, condiments, sports drinks and other food packaging. In addition to food industry packaging, the application scope of...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/20B32B27/08B32B27/34B32B33/00B65D65/40B29C55/28
Inventor 江继忠鲍祖本潘健吴跃忠陈旭
Owner HUANGSHAN NOVEL
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