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A kind of preparation method of soluble ethylene-propylene rubber packaging film

A technology of ethylene-propylene rubber and packaging film, which is applied in packaging, wrapping paper, transportation and packaging, etc. It can solve the problems of no soluble packaging film, etc., and achieve the effect of time-consuming and labor-intensive, good oil solubility and low temperature performance

Active Publication Date: 2020-01-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there is no literature on dissolvable packaging films

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A preparation method of a soluble ethylene-propylene rubber packaging film, comprising the following steps:

[0019] Step 1, blending polyolefin elastomer (POE) and linear low-density polyethylene (LLDPE), then adding additives, extruding and granulating in a twin-screw extruder at 150°C to 160°C; and

[0020] Step 2: Dry the pellets obtained in Step 1 at 70°C to 80°C, and blow the film at 180°C to 190°C to obtain a transparent film.

[0021] Wherein, the polyolefin elastomer is a copolymer of ethylene and α-olefin, and the linear low density polyethylene is LLDPE7042 pellets or powder.

[0022] Wherein, the polyolefin elastomer is added in an amount of 20.0%-30.0wt% of the total mass of the polyolefin elastomer and linear low-density polyethylene.

[0023] Wherein, the additive is oleic acid amide.

[0024] Wherein, the amount of the oleic acid amide is 0.08%-0.1wt% of the sum of the mass of the polyolefin elastomer and the linear low-density polyethylene.

[0025] ...

Embodiment 1

[0030] Blend 2.0kg of POE7467 pellets with 8.0kg of LLDPE7042 pellets, add 10g of additive oleic acid amide, the amount of which is 0.1% of the total mass of POE7467 and LLDPE7042, and extrude and manufacture in a twin-screw extruder at 150°C. Granules, the screw speed is 100r / min.

[0031] The obtained pellets were dried at 80°C, and film was blown with a HAAKE rheometer at 180°C to obtain a transparent white film. Mix 0.16g of the obtained film with 20g of ethylene-propylene rubber J-0010, and dissolve it in 181.4g of 150N lubricating base oil at 125°C with a stirring speed of 130r / min. No precipitation occurs at -20°C.

Embodiment 2

[0033] Blend 2.5kg of POE7467 pellets with 7.5kg of LLDPE7042 powder, add 8g of additive oleic acid amide, the amount of which is 0.08% of the total mass of POE7467 and LLDPE7042, and extrude and manufacture in a twin-screw extruder at 160°C. Granules, the screw speed is 110r / min.

[0034] The obtained pellets were dried at 70°C, and film was blown with a HAAKE rheometer at 190°C to obtain a transparent white film. Mix 0.16g of the obtained film with 20g of ethylene-propylene rubber J-0010, and dissolve it in 181.4g of 150N lubricating base oil at 125°C with a stirring speed of 130r / min, and there is no precipitation at -20°C.

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PUM

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Abstract

The invention relates to a preparation method of soluble ethylene propylene rubber packaging film, comprising the steps of I, blending polyolefin elastomer with linear low-density polyethylene, adding an additive, and extruding and granulating in a twin-screw extruder at 150-160 DEG C; and II, drying the granulated material of step I at 70-80 DEG C, and film-blowing at 180-190 DEG C to obtain transparent film. The soluble ethylene propylene rubber packaging film prepared by using the film blowing process has good oil solubility after it is mixed with ethylene propylene rubber J-0010 for oil solubility test, has no precipitate at -20 DEG C and good low-temperature properties, and the problems that stripping packaging film consumes time and labor and the soluble packaging film in service has high price are solved.

Description

technical field [0001] The invention relates to a preparation method of a soluble ethylene-propylene rubber packaging film. Background technique [0002] Ethylene-propylene rubber packaging film is divided into ethylene-vinyl acetate copolymer (EVA), low-density polyethylene (LDPE) and soluble packaging film. The main component of soluble packaging film is ethylene. Ethylene Propylene Diene Monomer (EPM) packaging inner film adopts soluble packaging film, which does not need to be peeled off, can be dissolved in base oil at a certain temperature, and has no precipitation at low temperature. This saves the process of peeling off the packaging film, saving time and effort, but the packaging film sells for a high price. [0003] There are many domestic literatures about the production and scientific research of packaging film. South China University of Technology conducted research on modified polypropylene and polypropylene packaging film, and studied the free radical melt g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/20B29C55/28B65D65/38
CPCB29C55/28B65D65/38C08J5/18C08J2323/08C08J2423/08C08L23/0815C08L2203/16C08L2205/025C08K5/20
Inventor 王刚刘振国董颖王博宫立波金春玉李连鹏杨博
Owner PETROCHINA CO LTD
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