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Flame-retardant shrinkable anticorrosive packaging film and manufacturing method thereof

A technology of anti-corrosion and packaging film, which is applied in the direction of packaging, wrapping paper, transportation and packaging, etc. It can solve the problems of infeasibility and achieve the effect of wide application range, tight packaging and good protection effect

Inactive Publication Date: 2011-04-27
沈阳防锈包装材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The section "(1) Centralized packaging of palletized articles" in the patent specification mentions that it can be heated by flames, but it is actually unfeasible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A flame-retardant shrinkable anti-corrosion packaging film is composed of an inner layer and an outer layer, and the ratio (percentage by weight) of various raw materials in the inner and outer layers is:

[0026] inner layer:

[0027] LDPE (MFR=0.2) 74%-76%

[0028] LLDPE (MFR=1.0) 8%

[0029] mLLDPE (MFR=2.0) 12%

[0030] Anti-corrosion plastic masterbatch (Shenyang anti-rust SF / DM213) 4%-6%

[0031] Outer layer:

[0032] LDPE (MFR=0.2) 75%-77%

[0033] LLDPE (MFR=1.0) 6%

[0034] HDPE (MFR=0.5) 7%

[0035] Flame-retardant plastic masterbatch (phosphorus or other types of PE flame-retardant masterbatch) 10%-12%.

[0036] Preparation method: Mix evenly according to the ratio of the above-mentioned inner layer and outer layer raw materials, and send them to the inner and outer layer hoppers of the double-layer co-extrusion blown film unit respectively. ℃~190℃, the inner and outer layer extruders are extruded and blown at the extrusion speed of 1:1 to obtain a doub...

Embodiment 2

[0038] A flame-retardant shrinkable anti-corrosion packaging film is composed of an inner layer and an outer layer, and the ratio (percentage by weight) of various raw materials in the inner and outer layers is:

[0039] inner layer:

[0040] Special resin for heat shrinkage (ExxonMobil NexxstarTMLDPE) 90%-92%

[0041] Anti-corrosion plastic masterbatch (Shenyang anti-rust SF / HM13) 8%-10%

[0042] Outer layer:

[0043] Special resin for heat shrinkage (ExxonMobil NexxstarTMLDPE) 85%-87%

[0044] Flame-retardant plastic masterbatch (halogen or other types of PE flame-retardant masterbatch) 13%-15%.

[0045] The raw materials of the inner layer and the outer layer are mixed evenly and sent to the inner and outer layer hoppers of the double-layer co-extrusion blown film unit respectively, and are extruded according to the heating temperature of 145°C-190°C and 160°C-200°C respectively. A double-layer film with a total thickness of 80 μm was obtained by extrusion blow molding ...

Embodiment 3

[0047] A flame-retardant shrinkable anti-corrosion packaging film is composed of an inner layer and an outer layer, and the ratio (percentage by weight) of various raw materials in the inner and outer layers is:

[0048] inner layer:

[0049] Special resin for heat shrinkage (LD 163 of Yanshan Petrochemical) 94%-96%

[0050] Anti-corrosion plastic masterbatch (Shenyang anti-rust SF / HM13) 4%-6%

[0051] Outer layer:

[0052] Special resin for heat shrinkage (LD 163 of Yanshan Petrochemical) 85%-88%

[0053] Flame-retardant plastic masterbatch (halogen or other types of PE flame-retardant masterbatch) 12%-15%.

[0054] The raw materials of the inner layer and the outer layer are mixed evenly and sent to the inner and outer layer hoppers of the double-layer co-extrusion blown film unit respectively, and are extruded according to the heating temperature of 145°C-190°C and 160°C-200°C respectively. A film with a total thickness of 120 μm was obtained by extrusion blow molding a...

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Abstract

The invention provides a flame-retardant shrinkable anticorrosive packaging film which is composed of a two-layer or three-layer structure, wherein, the inner layer contains an anti-rusting agent with an anticorrosive protection function on metal; the middle layer and the outer layer contain flame retardants with a flame retardance function; and the layers contain plastic particles with heating contractibility. The packaging film is formed by mixing raw materials according to a certain type and proportion, heating and then performing coextrusion blow molding on double-layer or three-layer coextrusion film blowing equipment according to a certain temperature condition and at thickness ratio, and the obtained packaging film is a novel multifunctional metal anticorrosive protective packaging material. The flame-retardant shrinkable anticorrosive packaging film has the characteristics of heating contractibility, excellent anti-rust property, skin packaging, good tightness, good fastness, flame retardance, being convenient in automated operation, and being economical and practical; and the packaging film can be widely applied to anticorrosive protective package of products such as auto parts, mechanical equipment, hardware tools, metallurgic products, aerospace products, electronic equipment, weapon equipment and the like during the storage and transportation period, thus being a novel material applicable to the current metal protective packaging field.

Description

technical field [0001] The invention relates to a packaging film material for metal, a flame-retardant, shrinkable and anti-corrosion packaging film product and a manufacturing method. Background technique [0002] With the development of logistics technology and storage technology, new requirements have been put forward for metal anti-rust film packaging, that is, single-piece batch sealed packaging, fastening packaging, unit packaging and automatic packaging. At present, there is still no corresponding package suitable for this demand Anti-rust material. Shrink packaging film is a packaging material that can automatically shrink when heated and can be shaped after cooling. It can form a fixed and universal unit packaging, and can realize automatic batch packaging. It is widely used in protective packaging of food, medicine, tableware, etc. [0003] While meeting the anti-rust packaging requirements of general metal products, there is another special point to consider, tha...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/32B65D65/40
Inventor 白芳唐艳秋刘宏李兮李长伟孙凯于海军
Owner 沈阳防锈包装材料有限责任公司
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