Flame-retardant contractile anti-corrosion packaging film and fabricating method thereof

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

Inactive Publication Date: 2013-04-03
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 "(1) Centralized packaging of palletized items" part of the patent specification mentions that the method of heating with flames is actually unfeasible.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A flame-retardant shrinkable anti-corrosion packaging film, which 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:

[0029] inner layer:

[0030] LDPE (MFR=0.2) 74%-76%

[0031] LLDPE (MFR=1.0) 8%

[0032] mLLDPE (MFR=2.0) 12%

[0033] Anti-corrosion plastic masterbatch (Shenyang Antirust SF / DM213) 4%-6%

[0034] Outer layer:

[0035] LDPE (MFR=0.2) 75%-77%

[0036] LLDPE (MFR=1.0) 6%

[0037] HDPE (MFR=0.5) 7%

[0038] Flame-retardant plastic masterbatch (phosphorus or other types of PE flame-retardant masterbatch) 10%-12%.

[0039] 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 obtai...

Embodiment 2

[0041] A flame-retardant shrinkable anti-corrosion packaging film, which 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:

[0042] inner layer:

[0043] Special resin for heat shrinkage (ExxonMobil NexxstarTMLDPE) 90%-92%

[0044] Anti-corrosion plastic masterbatch (Shenyang anti-rust SF / HM13) 8%-10%

[0045] Outer layer:

[0046] Special resin for heat shrinkage (ExxonMobil NexxstarTMLDPE) 85%-87%

[0047] Flame-retardant plastic masterbatch (halogen or other types of PE flame-retardant masterbatch) 13%-15%.

[0048] 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...

Embodiment 3

[0050] A flame-retardant shrinkable anti-corrosion packaging film, which 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:

[0051] inner layer:

[0052] Special resin for heat shrinkage (LD 163 of Yanshan Petrochemical) 94%-96%

[0053] Anti-corrosion plastic masterbatch (Shenyang Antirust SF / HM13) 4%-6%

[0054] Outer layer:

[0055] Special resin for heat shrinkage (LD 163 of Yanshan Petrochemical) 85%-88%

[0056] Flame-retardant plastic masterbatch (halogen or other types of PE flame-retardant masterbatch) 12%-15%.

[0057] 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 m...

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Abstract

A flame-retardant contractile anti-corrosion packaging film adopts a two-layer or three-layer structure, namely an inner layer containing a rust inhibitor which has an anti-corrosion and protection function for metal, and an intermediate layer and an outer layer respectively containing a fire retarding agent with a flame-retardant function, wherein each layer contains plastic particles which has thermal contractile property. The film is formed in a way that all raw materials are subjected to heating, co-extrusion and blow molding on two-layer / three-layer co-extrusion film blowing equipment under a certain thermal condition according to a certain thickness proportion after being mixed according to certain types and proportion, and is a novel multifunctional metal anti-corrosion and protection packaging material. The packaging film has the characteristics of thermal contractile property, good rust protection property, skin packaging, good air tightness, tightness, flame retardancy, and convenience in automatic operation, is economical and practical, and can be extensively applied to the anti-corrosion and protection packaging for such products in storage and delivery periods as automobile components, machinery equipment, hardware tools, metallurgy products, aerospace, electronic equipment and weapons. Therefore, the packaging film is a bran-new material in the filed of metal protection packaging.

Description

[0001] [0002] This application is a divisional application with application number 201010292131.3 and application date of September 27, 2010. technical field [0003] 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 [0004] 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, ta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/32B65D65/40B29C47/92B29C47/06B29C48/08B29C48/92
CPCB29C48/08B29C48/0017
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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