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Polyolefin heat-sliding heat-shrinkable film with excellent smooth performance and preparation method thereof

A heat-shrinkable film and polyolefin technology, which is applied in the field of polyolefin heat-shrinkable film, can solve problems such as inability to effectively guarantee fluency, lower automation efficiency, and uncontrollable precipitation process, etc., achieve good smoothness and durability, and improve production Efficiency, quick effect

Active Publication Date: 2022-01-25
GUANGDONG ANDELI NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of substance is easy to precipitate from the film, but the precipitation process is uncontrollable, and it is easy to become sticky at high temperature (≥30°C)
When applied to automatic packaging, its fluency cannot be effectively guaranteed, resulting in reduced automation efficiency

Method used

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  • Polyolefin heat-sliding heat-shrinkable film with excellent smooth performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A polyolefin heat-sliding heat-shrinkable film with excellent smooth performance, comprising an outer layer, a core layer and an inner layer stacked, wherein the raw materials of each layer are:

[0031] Outer layer:

[0032] 65wt% terpolymerized polypropylene (2.16kg pressure, 0.5g / 10min melt index at 230°C)

[0033] 20wt% acrylic acid modified polypropylene (2.16kg pressure, melt index at 230°C is 1.5g / 10min)

[0034] 5wt% silicone anti-blocking masterbatch

[0035] 5wt% vinyl bis stearamide smooth masterbatch

[0036] 5wt% surfactant type antistatic agent masterbatch;

[0037] Core layer:

[0038] 75wt% LDPE (2.16kg pressure, melt index at 190°C is 1.5g / 10min)

[0039] 15wt% mLDPE (2.16kg pressure, 1.5g / 10min melt index at 190°C)

[0040] 10wt% oil-based palmitamide smooth masterbatch;

[0041] inner layer:

[0042] 65wt% terpolymerized polypropylene (2.16kg pressure, 0.5g / 10min melt index at 230°C)

[0043] 20wt% acrylic acid modified polypropylene (2.16kg ...

Embodiment 2

[0052] A polyolefin heat-sliding heat-shrinkable film with excellent smooth performance, comprising an outer layer, a core layer and an inner layer stacked, wherein the raw materials of each layer are:

[0053] Outer layer:

[0054] 52wt% binary copolymerized polypropylene (2.16kg pressure, melt index at 230°C is 1g / 10min)

[0055] 40wt% homopolypropylene (2.16kg pressure, melt index at 230°C is 2g / 10min)

[0056] 4wt% silicone anti-blocking masterbatch

[0057] 1.5wt% stearic acid erucamide smooth masterbatch

[0058] 1.5wt% oil-based palmitamide smooth masterbatch

[0059] 1wt% surfactant type antistatic agent masterbatch;

[0060] Core layer:

[0061] 69wt% LLDPE (2.16kg pressure, melt index at 190°C is 2g / 10min)

[0062] 25wt% mLDPE (2.16kg pressure, 2g / 10min melt index at 190°C)

[0063] 6wt% oleyl palmitamide smooth masterbatch;

[0064] inner layer:

[0065] 52wt% binary copolymerized polypropylene (2.16kg pressure, melt index at 230°C is 1g / 10min)

[0066] 40wt...

Embodiment 3

[0076] A polyolefin heat-sliding heat-shrinkable film with excellent smooth performance, comprising an outer layer, a core layer and an inner layer stacked, wherein the raw materials of each layer are:

[0077] Outer layer:

[0078] 50wt% terpolymerized polypropylene (2.16kg pressure, melt index at 230°C is 3g / 10min)

[0079] 36.5wt% propylene-octene copolymer (2.16kg pressure, melt index at 230°C is 3g / 10min)

[0080] 5wt% silicone anti-blocking masterbatch

[0081] 1.5wt% vinyl bis stearamide smooth masterbatch

[0082] 2wt% stearic acid erucamide smooth masterbatch

[0083] 2wt% oleyl palmitamide smooth masterbatch

[0084] 3wt% surfactant type antistatic agent masterbatch;

[0085] Core layer:

[0086] 65wt% MDPE (2.16kg pressure, melt index at 190°C is 1g / 10min)

[0087] 25wt% mLDPE (2.16kg pressure, melt index at 190°C is 1g / 10min)

[0088] 10wt% oil-based palmitamide smooth masterbatch;

[0089] inner layer:

[0090] 50wt% terpolymerized polypropylene (2.16kg ...

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Abstract

The invention provides a polyolefin heat-sliding heat-shrinkable film with excellent smooth performance and a preparation method thereof. A polyolefin heat-sliding heat-shrinkable film with excellent slip properties, comprising an outer layer, a core layer and an inner layer laminated in sequence. The preparation method includes the following steps: mixing the raw materials of each layer in proportion, melting and plasticizing them respectively, and then performing multi-layer co-extrusion to obtain a co-extrusion layer melt, the co-extrusion layer melt is inflated to obtain a film bubble, and then used Cooling and shaping to obtain a primary blown film tube; the primary blown film tube is heated after removing water, and then inflated horizontally by bubbling and inflating instantly, and at the same time stretched longitudinally to the required size by a machine, and cooled by a sizing wind ring ; Finally, heat treatment, cooling, flattening, trimming, and winding to obtain a polyolefin heat-sliding heat-shrinkable film with excellent smoothness. The polyolefin heat-slip heat-shrinkable film with excellent slip performance has good slip performance under both low temperature and high temperature conditions.

Description

technical field [0001] The invention relates to the field of polyolefin heat-shrinkable films, in particular to a polyolefin heat-sliding heat-shrinkable film with excellent smooth performance and a preparation method thereof. Background technique [0002] Polyolefin heat shrinkable film is widely used in the field of packaging. With the development of industrial automation and intelligence, the application rate of automatic packaging is getting higher and higher. [0003] Good smooth performance can ensure the efficiency of pof in the packaging process, especially in the application of high-speed automatic balers. [0004] However, the slip agents traditionally used in POF are mainly primary amide compounds such as erucamide and oleamide. Such substances are easy to precipitate from the film, but the precipitation process is uncontrollable, and it is easy to become sticky at high temperature (≥30°C). When applied to automatic packaging, its fluency cannot be effectively g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/20B32B27/32B32B33/00B29C55/28
CPCB32B27/08B32B27/32B32B27/20B32B33/00B29C55/28B32B2250/242B32B2307/736
Inventor 陈捷新苏阳吴淑芬张春生王丹旭
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD