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, short process and improving flatness

Active Publication Date: 2012-04-11
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

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

Example Embodiment

[0048] Example 1

[0049] (1) Preparation of LLDPE-g-PS: Take 0.8 parts of DCP and 1.6 parts of acetone into a beaker and mix, and then mix the mixed solution with 100 parts of LLDPE (101AA), 15 parts of PS (666D) and 0.05 parts of anti- Oxygen 1010 and 0.15 parts of calcium stearate were put into a 10L high-speed mixer together, mixed at a high speed for 5 minutes, and the mixed material was added to a Φ67 twin-screw extruder. The melt-grafting reaction was carried out under the same conditions, followed by cooling and granulation to obtain LLDPE-g-PS with a graft ratio of 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 parts of acetone solvent, then add 5 parts of LLDPE (101AA), mix in a 10-liter high-speed mixer for 5 minutes, and prepare A premixed masterbatch was prepared, and 9 parts of LLDPE-g-PS (grafting rate: 3.9%), 95 parts of LLDPE (101AA), 0.2 part of antistatic a...

Example Embodiment

[0051] Example 2

[0052] (1) Preparation of LLDPE-g-PS: Take 1.1 parts of DCP and 2.6 parts of acetone into a beaker and mix, and then mix the mixed solution with 100 parts of LLDPE (7042), 22 parts of PS (492J) and 0.1 part of anti- Oxygen agent 1010 and 0.1 part of zinc stearate were put into a 10L high-speed mixer together, mixed at a high speed for 5 minutes, and the mixed material was added to a Φ67 twin-screw extruder. The melt-grafting reaction was carried out under the same conditions, followed by cooling and granulation to obtain LLDPE-g-PS with a graft ratio of 5.2%.

[0053] (2) Preparation of polyethylene heavy packaging film resin composition: after mixing 0.35 parts of TB and 0.017 parts of BPO with 0.8 parts of xylene solvent, then add 7 parts of LLDPE (7042), and mix in a 10-liter high-speed mixer for 5 minutes, A premixed masterbatch was prepared, and 11 parts of LLDPE-g-PS (grafting rate: 5.2%) and premixed masterbatch, 93 parts of LLDPE (7042), 0.2 part of...

Example Embodiment

[0054] Example 3

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

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

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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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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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