Recyclable warp and weft flat filament reinforced polyolefin metallized composite film and preparation method thereof

A metallized film and polyolefin technology, applied in the field of flexible packaging, can solve the problems of high production cost, product defects, and difficult production process

Pending Publication Date: 2021-09-14
NANJING HUJIANG COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, there have been a lot of researches on woven fabrics composited with other materials, but because of the difficult preparation process, high preparation cost, and product defects, it has not been able to provide a type of metallized composite film product that can achieve high performance at the same time. It can also take into account the characteristics of recyclability

Method used

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  • Recyclable warp and weft flat filament reinforced polyolefin metallized composite film and preparation method thereof
  • Recyclable warp and weft flat filament reinforced polyolefin metallized composite film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] refer to figure 1 , the present embodiment provides a recyclable warp and weft flat wire reinforced polyolefin metallized composite film, which successively includes a woven flat wire layer, a polyolefin resin layer and a polyolefin metallized film layer; The silk is woven into a flat shape, and one side is treated with corona. The warp density and weft density of the woven flat yarn layer are 33 pieces / 10 cm, and the density of the woven flat yarn layer is 70-75g / m 2 ; The polyolefin resin layer is coated on the corona surface of the braided flat yarn layer, and compounded with the metal surface of the polyolefin metallized film layer.

[0037] Specifically, the warp and weft are melted and extruded from the raw material by two screw extruders, then cast and cooled from the die head through three channels, and then cut into strips and then stretched into flat yarns with a width of 3mm. , thickness is 0.04mm; Described warp thread, weft thread are three-layer composite...

Embodiment 2

[0053] Present embodiment is substantially the same as embodiment 1 technological process, and difference is:

[0054] The raw material composition of the polyolefin resin layer coated in step S3 is: 40% polyolefin resin C, 60% polyolefin resin D, wherein the grade of resin C is RB707CF, and the grade of resin D is 1018CA.

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Abstract

The invention discloses a recyclable warp and weft flat filament reinforced polyolefin metallized composite film and a preparation method thereof. The warp and weft flat filament reinforced polyolefin metallized composite film comprises a woven flat filament layer, a polyolefin resin layer and a polyolefin metallized film layer, and the woven flat filament layer and the polyolefin metallized film layer are extruded and compounded through a layer of polyolefin resin. Compared with other types of metallized composite films, the warp and weft flat filament reinforced polyolefin metallized composite film provided by the invention has the advantages that the transverse and longitudinal tension is doubled, the nail rod tearing is improved by nearly 10 times, an adhesive is not needed, the chemical pollution is reduced, and the metallized composite film can be recycled according to a single plastic component metallized film after being used and recycled. The recycled warp and weft flat filament reinforced polyolefin metallized composite film can be reused after being treated, the problem that an existing metallized composite film is difficult to separate, high in separation cost and not beneficial to recycling is solved, the use value of the material is maximized, and the ecological environment is protected.

Description

technical field [0001] The invention relates to the technical field of flexible packaging, in particular to a recyclable warp and weft flat wire reinforced polyolefin metallized composite film and a preparation method thereof. Background technique [0002] Metallized film is a thin layer of metal coated on a continuously moving film. Compared with a single metal film (such as aluminum foil), the production cost of metallized film is low, the production process conditions are not as harsh as metal film, and the scope of application is wider. It is widely used in properties (such as barrier properties) and is not inferior to metal films, and even some properties (such as softness) are better than metal films, so metallized films are often used as cheap metal film substitutes for metallized composite films Field Laminates. However, pure metallized films have various disadvantages, and some physical properties (such as heat sealing, stretching, etc.) often fail to meet people's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/08B32B27/02B32B33/00B32B37/15B32B37/24B32B38/00
CPCB32B27/32B32B27/12B32B5/02B32B33/00B32B37/153B32B37/24B32B38/0008B32B2037/243B32B2255/10B32B2255/205B32B2262/0253B32B2270/00B32B2255/02B32B2255/26
Inventor 章育骏章澄
Owner NANJING HUJIANG COMPOSITE MATERIALS
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