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Polyethylene heavy packaging film resin composition and preparation method thereof

A resin composition and repackaging technology, applied in the field of repackaging film resin composition and its preparation, to achieve the effects of enhancing effect, improving flatness and short development period

Active Publication Date: 2013-04-24
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant report on the preparation of a heavy-duty packaging film resin composition with high strength, good stiffness, and high-speed packaging on-line by adding the second component LLDPE-g-PS graft copolymer to the micro-crosslinked modified LLDPE resin.

Method used

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  • Polyethylene heavy packaging film resin composition and preparation method thereof
  • Polyethylene heavy packaging film resin composition and preparation method thereof
  • Polyethylene heavy packaging film resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Preparation of LLDPE-g-PS: Take 0.8 parts of DCP and 1.6 parts of acetone and mix them in a beaker, then mix the mixed solution with 100 parts of LLDPE (101AA), 15 parts of PS (666D) and 0.05 parts of antibacterial Put oxygen agent 1010 and 0.15 parts of calcium stearate into a 10L high-speed mixer together, mix at high speed for 5 minutes, and put the mixed material into a Φ67 twin-screw extruder at a reaction temperature of 170-220°C and a reaction time of 9 minutes. Carry out the melt grafting reaction under the temperature, cool, granulate, obtain the LLDPE-g-PS of graft rate 3.9%.

[0050] (2) Preparation of polyethylene heavy packaging film resin composition: after mixing 0.38 parts of TB and 0.015 parts of BPO with 0.9 part of acetone solvent, then add 5 parts of LLDPE (101AA), and mix in a 10-liter high-speed mixer for 5 minutes to prepare into a premix masterbatch, take out 9 parts of LLDPE-g-PS (graft rate: 3.9%) and premix masterbatch and 95 parts of LLDP...

Embodiment 2

[0052] (1) Preparation of LLDPE-g-PS: Take 1.1 parts of DCP and 2.6 parts of acetone and mix them in a beaker, then mix the mixed solution with 100 parts of LLDPE (7042), 22 parts of PS (492J) and 0.1 parts of anti Put oxygen agent 1010 and 0.1 part of zinc stearate together in a 10L high-speed mixer, mix at high speed for 5 minutes, and put the mixed material into a Φ67 twin-screw extruder at a reaction temperature of 170-220°C and a reaction time of 9 minutes. Carry out the melt grafting reaction under the temperature of 100°C, cool and granulate to obtain LLDPE-g-PS with a graft rate of 5.2%.

[0053] (2) Preparation of polyethylene heavy packaging film resin composition: after mixing 0.35 part of TB and 0.017 part of BPO with 0.8 part of xylene solvent, then add 7 parts of LLDPE (7042), mix in 10 liters of high-speed mixer for 5 minutes, Make a premixed masterbatch, take out 11 parts of LLDPE-g-PS (grafting rate: 5.2%) and premixed masterbatch and 93 parts of LLDPE (7042),...

Embodiment 3

[0055] (1) The preparation of LLDPE-g-PS is completely the same as in Example 1.

[0056] (2) Preparation of polyethylene heavy packaging film resin composition: after mixing 0.30 part of TB and 0.019 part of BPO with 0.8 part of acetone solvent, then add 5 parts of LLDPE (101AA), and mix in a 10-liter high-speed mixer for 5 minutes to prepare into a premix masterbatch, take out 15 parts of LLDPE-g-PS (graft rate: 3.9%) and premix masterbatch and 95 parts of LLDPE (101AA), 0.2 parts of antistatic agent 163, 0.15 parts of antioxidant 1010, 0.15 Parts of calcium stearate are fed into the extruder through the feeding port, reacted for 2 minutes at a barrel temperature of 165-220°C, extruded, cooled, and granulated to obtain a polyethylene heavy packaging film resin composition. The composition is blown into a heavy packaging film (film thickness: 0.15mm, width 550mm) on a SJ-65×30 three-layer co-extrusion film blowing unit. Its composition properties and heavy packaging film pro...

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Abstract

The invention discloses a polyethylene heavy packaging film resin composition and a preparation method thereof. Taking the weight of linear low density polyethylene (LLDPE) as 100%, the resin composition comprises: (1) LLDPE fusant, wherein the flow rate of the fusant is 0.5-10 g / 10min; (2) a complex cross-linking additive composed of 1,1-dimethylethyl-hydrogen peroxide and benzoyl peroxide, wherein the total use amount is 0.27%-0.49%; and (3) 7%-25% of LLDPE-g-PS graft copolymer. A polyethylene heavy packaging film which is provided with high strength and good straightness and can ensure high-speed packaging can be produced by blowing the composition in a manner of not adding any addition agent, such as a slipping agent, an opening agent, a processing modifier and the like, wherein the film thickness is 0.13-0.15 mm, and the breadth of the film is 550 mm. The invention further discloses the preparation method of the resin composition.

Description

technical field [0001] The invention relates to a polyethylene heavy packaging film resin composition, in particular to a micro-crosslinked modified linear low-density polyethylene (LLDPE) and a second component LLDPE-g-PS graft copolymer, blown out A heavy-duty packaging film resin composition with high strength and good crispness, capable of ensuring on-line high-speed packaging, and a preparation method thereof. Background technique [0002] As we all know, heavy packaging film has become a common heavy packaging material in developed countries such as Europe and the United States. It is a new type of packaging material developed in China in recent years. A new type of packaging film product with multiple processes and operations such as material, heating and sealing. This kind of film can meet the needs of high-speed filling, large-scale storage and transportation, and automatic palletizing of large-scale production automatic packaging lines. cost. At present, with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L87/00C08K5/14C08G81/02C08J3/24B29B9/06B29C47/92B65D65/38B29C48/92
CPCB29C48/04B29C48/92B29C2948/92561B29C2948/92704B29C2948/92895B29C2948/9298
Inventor 徐典宏王洪山郭义赵燕白竞冰陈红牛承祥谈敦礼薛旭辉何连成
Owner PETROCHINA CO LTD
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