A form-fill- seal (FFS) single layer heavy-duty film and a preparation method thereof

A packaging film and single-layer technology, which is applied in the field of FFS single-layer heavy packaging film and its preparation, can solve the problems of single-layer packaging film such as poor heat sealing performance, unstable friction coefficient, and high bag breaking rate, and achieve a wide molecular weight distribution, The effect of bubble stability guarantee, toughness and stiffness improvement

Active Publication Date: 2013-04-24
GUANGDONG SUNION CHEM & PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, single-layer packaging films generally have many defects such as poor heat-sealing performance, unstable friction coefficient, and high bag breakage rate. In order to achieve a more ideal use effect, a large amount of additives are usually used, resulting in high cost.

Method used

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  • A form-fill- seal (FFS) single layer heavy-duty film and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] A kind of FFS single-layer heavy packaging film of the present invention is made up of the raw material of following percentage by weight:

[0070] Metallocene LLDPE 50%;

[0071] Ethylene-vinyl acetate copolymer 10%;

[0072] Ultra-low density polyethylene 10%;

[0073] Linear low density polyethylene 25%;

[0074] Masterbatch 5%.

[0075] Specifically, the melt index of metallocene linear low density polyethylene is 0.5-2.5 g / 10min, and the density is 0.9-0.93 g / cm 3 ;

[0076] Metallocene linear low density polyethylene is a polymer formed by copolymerization of one or more of butene, hexene or octene with polyethylene monomer.

[0077] Specifically, the melt index of ethylene-vinyl acetate copolymer is 0.2-3g / 10min, and the density is 0.91-0.95 g / cm 3 ;

[0078] Specifically, the melt index of ultra-low density polyethylene is 0.2-3g / 10min, and the density is 0.88-0.92 g / cm 3 ;

[0079] Specifically, the melt index of linear low density polyethylene is 0.5-...

Embodiment 2

[0081] The main technical scheme of this embodiment is the same as that of Embodiment 1, the difference is that a kind of FFS single-layer heavy packaging film of the present invention is made up of the following raw materials in weight percentage:

[0082] Metallocene LLDPE 40%;

[0083] Ethylene-vinyl acetate copolymer 10%;

[0084] Ultra-low density polyethylene 10%;

[0085] Linear low density polyethylene 35%;

[0086] Masterbatch 5%.

Embodiment 3

[0088] The main technical scheme of this embodiment is the same as that of Embodiment 1, the difference is that a kind of FFS single-layer heavy packaging film of the present invention is made up of the following raw materials in weight percentage:

[0089] Metallocene LLDPE 36%;

[0090] Ethylene-vinyl acetate copolymer 15%;

[0091] Ultra-low density polyethylene 5%;

[0092] Linear low density polyethylene 40%;

[0093] Masterbatch 4%.

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Abstract

The present invention relates to the technical field of packaging film, and concretely relates to a form-fill- seal (FFS) single layer heavy-duty film and a preparation method thereof. The single layer heavy-duty film is composed of 30-50% of metallocene linear low density polyethylene, 5-20% of an ethylene-vinyl acetate copolymer, 5-20% of ultra low density polyethylene, 20-50% of linear low density polyethylene, and 3-5% of masterbatch, and is obtained via blending in a single screw extruder, and processes of extrusion molding via a machine head, traction, cooling, winding, and printing. Compared with the prior art, the single layer heavy-duty film of the present invention optimizes product formulation, has good tensile strength, impact strength and tear strength; in the preparation process, a gradual cooling mode is adopted, so the resulting product is more stable in performance; and aids are not added in the raw materials, so the product is low in cost and has a good market prospect.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to an FFS single-layer heavy packaging film and a preparation method thereof. Background technique [0002] FFS heavy-duty packaging film is a new type of packaging material that realizes continuous one-time automatic "forming, filling-sealing (Form-Fill-Seal, "FFS") and other multiple processes, and its packaging capacity can reach 1700-1900 bags / hour , can meet the high-speed filling, large-scale storage and transportation and automatic palletizing of large-scale production packaging lines, so it has broad application prospects. In recent years, the FFS heavy packaging film industry has developed rapidly, and new heavy packaging with three or more layers Films are also constantly rolled out. [0003] However, the co-extrusion equipment for the production of multi-layer heavy packaging film occupies a large space, requires high requirements for plant and staffing, and requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06B29B7/00B29C47/00B29C55/02B29C35/16
Inventor 郭彪王皓谭权张海涛
Owner GUANGDONG SUNION CHEM & PLASTIC
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