Extinction label film and preparation method thereof, and transparent label film preparation method

A labeling and matting technology, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of matting performance, poor printing performance and strength, complex processing steps, etc., achieve good gloss, avoid Silver dot defect, the effect of reducing the reflection of light

Active Publication Date: 2019-10-15
GUANGDONG ANDELI NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a matte label film, aiming to improve the technical problems of the existing matte label film prepared by biaxial stretching process, which leads to poor matting performance, printing performance and strength, and complicated processing steps

Method used

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  • Extinction label film and preparation method thereof, and transparent label film preparation method

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preparation example Construction

[0026] The present invention proposes a preparation method of a matte label film, comprising the following steps:

[0027] Dust removal: After mixing the raw materials of the outer layer, middle layer and inner layer evenly, use compressed air to remove dust;

[0028] Extrusion and plasticization: Add the dust-removed outer layer, middle layer and inner layer raw materials to the feed end of the single-screw extruder respectively, melt and plasticize, and cast and extrude through the co-extrusion die to obtain a composite melt;

[0029] Cooling and shaping: the composite melt is transported to the embossing roller group, rapidly cooled and shaped to form a composite film;

[0030] Trimming and corona treatment: importing the composite film into a trimming machine, trimming the composite film, and then performing corona treatment on the composite film after trimming;

[0031] Hemming: The corona-treated composite film is introduced into a winder, and the matte label film is ob...

Embodiment 1

[0051] Dust removal: Weigh 60% low-density polyethylene, 8% maleic anhydride graft modified polyethylene and 32% high-density polyethylene as raw materials for the outer layer, and weigh 38% low-density polyethylene and 62% high-density polyethylene as raw materials for the inner layer. % high-density polyethylene, weigh 100% high-density polyethylene middle layer raw material, weigh 100% high-density polyethylene middle layer raw material, mix the outer layer raw material, middle layer raw material and inner layer raw material respectively, Use compressed air to remove dust, and dry the dust-removed outer layer raw materials, middle layer raw materials and inner layer raw materials respectively. The drying time is 60 minutes and the drying temperature is 80 °C;

[0052] Extrusion and plasticization: add the dust-removed outer layer raw materials, middle layer raw materials and inner layer raw materials to the feed ends of three single-screw extruders, melt and plasticize them,...

Embodiment 2

[0057] Dust removal: Weigh 65% low-density polyethylene, 5% metallocene linear low-density polyethylene and 30% high-density polyethylene for the outer layer, weigh 40% low-density polyethylene and 60% High-density polyethylene, take the intermediate layer raw material of 100% high-density polyethylene, mix the outer layer raw material, the middle layer raw material and the inner layer raw material respectively, and use compressed air to carry out dust removal treatment on it, and the outer layer material after dust removal treatment Layer raw materials, middle layer raw materials and inner layer raw materials are dried separately, the drying time is 60min, and the drying temperature is 80°C;

[0058] Extrusion and plasticization: add the dust-removed outer layer raw materials, middle layer raw materials and inner layer raw materials to the feed ends of three single-screw extruders, melt and plasticize them, and then cast and extrude them through a co-extrusion die to obtain C...

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Abstract

The invention discloses an extinction label film and a preparation method thereof, and a transparent label film preparation method. The extinction label film preparation method comprises the steps ofdust removal, specifically, after an outer layer raw material, a middle layer raw material and an inner layer raw material are uniformly mixed respectively, and then dust removal treatment is carriedout on the outer layer raw material, the middle layer raw material and the inner layer raw material by using compressed air; extrusion plasticizing, specifically, the dedusted outer layer raw material, the middle layer material and the inner layer raw material are respectively added to a feeding end of a single screw extruder and are subjected to melting and plasticizing to obtain a composite meltthrough tape casting extrusion by a co-extrusion die head; and cooling and shaping, specifically, the composite melt is conveyed to an embossing roller set and is subjected to rapid cooling and shaping to form a composite film. The extinction label film is manufactured by matching a tape casting extrusion process with an embossing process, the process steps are simple, the generation of a silverpoint defect in a traditional double-drawing process can be effectively avoided, secondary processing procedures such as bidirectional drawing, chemical solvent etching and the like are not needed after extrusion molding, aging and placing is not needed, the mechanical performance of the extinction label film cannot be negatively affected, and the production efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of matte label films, in particular to a matte label film, a preparation method thereof, and a preparation method of a transparent label film. Background technique [0002] Matte label film, also known as matt film, is a plastic film product with low gloss and matting effect. It has good processing performance and smooth surface of the finished product. Printing methods such as plates, and good adaptability during printing, even pencils and ballpoint pens can be used to write directly on the surface of the matte label film, so it is widely used in chemical, daily chemical, food and pharmaceutical industries. [0003] At present, the base material of matt label film is mainly made of polypropylene resin and inorganic filler as the main raw materials, and is manufactured by biaxial stretching method. The longitudinal and horizontal stretching process of matting label film in the biaxial stretching method will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/08B29C48/21B29C69/00B32B27/08B32B27/32B29K23/00B29L9/00
CPCB29K2023/0633B29K2023/065B29L2009/00B32B27/08B32B27/32B32B2250/242B29C48/002B29C48/0022B29C48/08B29C48/21
Inventor 邱育渠王丹旭陈汉城王毅刚袁胜蚁树雄
Owner GUANGDONG ANDELI NEW MATERIALS CO LTD
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