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Low-temperature-resistant polypropylene clothing packaging film and preparation method thereof

A packaging film and polypropylene technology, applied in the field of clothing accessories, can solve the problems of high friction resistance, powder output and high cost, and achieve the effects of strong interface bonding force, improved low temperature resistance and low equipment requirements

Inactive Publication Date: 2014-07-16
GUANGDONG ESQUEL TEXTILES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, there is currently a polypropylene cast film with POE / POP elastomer added to the core layer, and the obtained film can be used at a low temperature of -10°C, but the test method adopts the falling impact method. Although the film has been refrigerated at low temperature, it cannot Take it out and place it on the fixture of the dropper and then start the test. The actual temperature of the film is actually close to room temperature, so it can only prove that the toughness of the film is better than that of ordinary polypropylene film in an environment close to room temperature, but not -10 Whether the toughness of the film is significantly improved at ℃ or even lower temperature
At the same time, multi-layer co-extruded composite film equipment has a large investment and high cost, which is not suitable for use in clothing packaging bags. In addition, if the POE / POP elastomer in the multi-layer composite film is used for low-temperature toughened polypropylene technology Film, the single-layer film produced has the problem of high friction resistance and difficulty in opening. Adding anti-blocking agent will also cause the problem of 'dusting', see attached figure 1 , especially on the surface of dark clothing to form a piece of powder layer, affecting the appearance of clothing

Method used

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  • Low-temperature-resistant polypropylene clothing packaging film and preparation method thereof
  • Low-temperature-resistant polypropylene clothing packaging film and preparation method thereof
  • Low-temperature-resistant polypropylene clothing packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the low temperature resistant polypropylene clothing packaging film described in the present embodiment comprises the following steps:

[0028] (1) The homopolypropylene that is 92wt% by weight percentage, the modified polypropylene of 7.5wt% and the anti-adhesive agent of 0.5wt% are mixed at high speed by high-speed mixer for 3 minutes;

[0029] (2) the mixed raw material of step (1) gained is packed in the down-blowing water-cooled film blowing machine, evenly disperses and extrudes the blown film to obtain the polypropylene film cylinder;

[0030] (3) the polypropylene film cylinder material of step (2) gained just can obtain garment packaging bag through surface printing and slitting operation again;

[0031] Among them, the temperature of the down-blowing water-cooled film blowing machine is: 175°C in the first zone, 180°C in the second zone, 185°C in the third zone, 185°C in the fourth zone, 180°C in the fifth zone, and 175°C at the head....

Embodiment 2

[0039] The preparation method of the low temperature resistant polypropylene clothing packaging film described in the present embodiment comprises the following steps:

[0040] (1) The homopolypropylene that is 82wt% by weight percentage, the modified polypropylene of 16.5wt% and the anti-caking agent of 1.5wt% are mixed 5 minutes at high speed by high-speed mixer;

[0041] (2) the mixed raw material of step (1) gained is packed in the down-blowing water-cooled film blowing machine, evenly disperses and extrudes the blown film to obtain the polypropylene film cylinder;

[0042] (3) The polypropylene film tube material of step (2) gained can obtain the garment packaging bag through surface printing and slitting process again.

[0043] Among them, the temperature of the down-blown water-cooled film blowing machine is: 185°C for the first zone, 185°C for the second zone, 190°C for the third zone, 190°C for the fourth zone, 185°C for the fifth zone, and 180°C for the machine head....

Embodiment 3

[0051] Add 75wt% homopolypropylene, 22wt% modified polypropylene, and 3wt% anti-caking agent into the high-speed mixer, and the rest of the processes and tests are the same as in Example 1. The modified polypropylene in this embodiment is composed of repeating units of isotactic polypropylene and randomly distributed ethylene, the content of the ethylene is 17 wt%, and the non-migrating particulate anti-adhesive agent is carbon dioxide Silicone anti-adhesive.

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Abstract

The invention discloses a low-temperature-resistant polypropylene clothing packaging film composed of the following components in percentage by weight: 75-92wt% of homo polypropylene, 7.5-22wt% of modified polypropylene and 0.5-3wt% of adhesion preventive, wherein modified polypropylene is composed of a repeating unit of isotactic polypropylene and 6-22% of irregularly-distributed ethylene. The low-temperature-resistant polypropylene clothing packaging film disclosed by the invention is resistant to low temperature, high in transparency and good in anti-blocking property; in addition, the well-chosen non-migration particle adhesion preventive is adopted, and the problems of high friction resistance, opening difficulty and easiness for powder leakage of a single layer of film, caused by the addition of modified polypropylene, are solved.

Description

technical field [0001] The invention relates to the field of clothing accessories, in particular to a low-temperature resistant polypropylene clothing packaging film and a preparation method thereof. Background technique [0002] Polypropylene has high mechanical properties and heat resistance, excellent fatigue resistance, electrical insulation and chemical corrosion resistance, and the obtained film has high transparency and good toughness at room temperature. has been widely applied. However, polypropylene film has poor low temperature resistance and is easy to break or crack when the temperature is low in winter, so it is easy to cause complaints from clothing sellers and end customers. [0003] In order to meet the requirements of packaging films for clothing, it is necessary to improve the low-temperature toughness of polypropylene films without greatly affecting the transparency, opening and rigidity. Usually, the method to improve the low-temperature toughness of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K3/36C08K3/34B29C55/28
CPCC08L23/12B29C48/0018B29C2948/92704C08L2201/10C08L2203/16C08L23/14C08K3/36C08K3/34
Inventor 王国忠薛矛曾武叶永茂林建云
Owner GUANGDONG ESQUEL TEXTILES CO LTD
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