Packaging material and its preparing method

A technology for packaging materials and raw materials, applied in the field of materials and their preparation, can solve the problems of poor inner layer gloss, uneven inner layer film, poor barrier properties, etc., and achieve increased tensile strength, not easy to absorb static electricity, and good barrier properties Effect

Inactive Publication Date: 2006-03-22
北京联宾塑胶印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Similar products in the prior art are usually divided into two layers, the outer layer is added with white masterbatch, and the inner layer is added with black masterbatch. The main defects are: plastic smudge, inner layer with poor gloss, inner layer with particles, inner layer film not Smooth, poor barrier, easy to oxidize, easy to absorb static electricity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material composition and its weight ratio are respectively:

[0031] Outer layer:

[0032] LD605

1001∶1220

SP2520

2001

SHPE-6

PEA-2

45

90∶60

22

60

1.8

1.4

[0033] F222

1001∶2230

1018

3001

4681

45

90∶90

22

1.8

15

[0034] LD104

21HS

1018: SP2520

45

110

20∶50

[0035] The preparation method is as follows:

[0036] Stir the raw material, that is, plastic particles first, feed them with a hopper, heat the screw to 150-155°C to melt, extrude from an extruder at 145-155°C, blow it into a bubble shape, and treat it with bubble-stopping traction and haloing by the clamping roller. Cut and roll.

Embodiment 2

[0038] Raw material composition and its weight ratio are respectively:

[0039] LD100

21HS:1001

1018

FOK96

SHPE-6

PEA-2

50

100∶75

25

65

2

1.5

[0040] LD165

1220∶2230

2045

FOK90

4681

50

100∶100

25

2

16

[0041] LD104

1001

SP2520:1018

50

125

20∶55

[0042] Prepare according to the method of Example 1.

[0043] The prepared packaging material has the following advantages:

[0044] A. The smell of plastic is mild. After 8 consecutive days of smell tests by 160 people from different departments, 80% of the people think that this product has a lighter plastic smell than conventional products.

[0045] B. QB1231-91 "Polyethylene Blown Film for Liquid Packaging" stipulates: friction coefficient ≤ 0.35, friction coefficient of conventional product non-treatment surface and non-treatment sur...

Embodiment 3

[0049] Raw material composition and its weight ratio are respectively:

[0050] L605

[0051] Middle:

[0052] LD104

[0053] LD100

[0054] Prepare according to the method of Example 1.

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PUM

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Abstract

The packing material is three-layered material, including the outer layer of LDPE, LLDPE, MPE, white mica, antiblocking agent and lubricant; the middle layer of LDPE, LLDPE, MPE, white premix and black premix; and the inner layer of LDPE, LLDPE and MPE. The preparation process includes the following steps: feeding material with material bin, heating to melt, extruding in extruder, foaming, debubbling and drawing corona treatment, cutting and winding. The packing material has few plastic smell, high flatness and flexibility, good brightness, high tension strength, high blocking property, less oxidation and less electrostatic adsorption.

Description

technical field [0001] The invention relates to a material and a preparation method thereof, in particular to a packaging material and a preparation method thereof. Background technique [0002] Polyethylene film packaging material is a very widely used material, especially in the field of liquid packaging. Similar products in the prior art are usually divided into two layers, the outer layer is added with white masterbatch, and the inner layer is added with black masterbatch. The main defects are: plastic smudge, inner layer with poor gloss, inner layer with particles, inner layer film not Smooth, poor barrier, easy to oxidize, easy to absorb static electricity. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art and provide a packaging material and a preparation method thereof. [0004] The present invention is realized through the following technical solutions. [0005] The packaging material of the pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/20B29C47/06
Inventor 江志宏
Owner 北京联宾塑胶印刷有限公司
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