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A kind of ultra-thin ultra-mirror polypropylene aluminized substrate film preparation method

A technology for film preparation and polypropylene materials, which is applied in the field of film packaging, can solve the problems of low surface brightness, poor effect of aluminized film, and low production efficiency, and achieve the effects of improved optical performance, high production efficiency, and excellent thickness uniformity

Active Publication Date: 2021-05-07
烟台丰福莱薄膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of relatively large film thickness of the existing aluminized base material, relatively low surface brightness and low preparation efficiency, which lead to relatively high packaging cost and poor effect of the prepared aluminized film, and provides a super-mirror effect on the surface. The polypropylene aluminum-coated substrate film breaks through the thickness limit of the traditional casting method to produce polypropylene film, and realizes the reduction application of polypropylene film

Method used

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  • A kind of ultra-thin ultra-mirror polypropylene aluminized substrate film preparation method
  • A kind of ultra-thin ultra-mirror polypropylene aluminized substrate film preparation method
  • A kind of ultra-thin ultra-mirror polypropylene aluminized substrate film preparation method

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Embodiment 1

[0031] This embodiment adopts a single-layer material structure, and 100% Nordic chemical copolymerized polypropylene resin RB707CF is selected as the high melt strength polypropylene material, wherein the Vicat softening point of RB707CF is 125°C.

[0032] like figure 1 As shown, the specific preparation method is: add RB707CF into the silo 1, heat and melt it through the extruder 2, and then extrude it from the die head 3. The blow-up ratio is 2.3, and the temperature of the molten material is adjusted and controlled between 210°C and 230°C. , the initial thickness of the film is set to 48 microns, and the film bubble 5 is blown into the film bubble 5 by the automatic wind ring 4 and the thickness is adjusted. The thickness measurement module 6 performs a thickness measurement once, and then the traction roller mechanism 7 performs clamping and traction, and the traction speed is 50 m / min. Use the stretching roller 9 to carry out online longitudinal stretching at a temperatu...

Embodiment 2

[0034]This embodiment adopts a three-layer material structure, and the structural composition is A / B / C, wherein the thickness ratio of the three layers of A, B, and C is 1:2:1, A and B are the surface layers, and the selected materials are all 100% High melt strength Borealis polypropylene copolymer RB707CF, its Vicat softening point is 125°C; C is the heat-sealing layer, the choice of material for this layer is: 80% Borealis copolymerized polypropylene RB707CF, 19% Exxon Mobil's elastomer Vistamaxx 6102FL and 1% Schulman opening slip masterbatch FSU105E.

[0035] like figure 1 As shown, the specific preparation process is as follows: the above-mentioned A, B, and C three-layer materials are added to the silo 1, heated and melted by the extruder 2, and then extruded from the die head 3. The blow-up ratio is 2.3, and the temperature of the molten material is adjusted. Controlled between 210°C and 230°C, the initial thickness of the film is set to 60 microns, and the film bubbl...

Embodiment 3

[0037] This embodiment adopts a five-layer material structure, and the structure is composed of A / B / C / D / E (the thickness ratio of each layer is 20%), A and E are surface layers, and the selected materials are all 100% high melt strength The Nordic chemical copolymerized polypropylene RB707CF, the Vicat softening point is 125 °C; the materials of the B and D layers are: 50% of the Nordic chemical copolymerized polypropylene RB707CF and 50% of the Dow chemical metallocene material DOW INNATE ST50; the material of the C layer For: 100% DOW INNATE ST50 metallocene material from Dow Chemical.

[0038] like figure 1 As shown, the specific preparation process is as follows: Add the materials of the above five layers of A, B, C, D, and E into the silo 1, heat and melt them through the extruder 2, and then extrude them from the die head 3 with a blow-up ratio of 2.3, and melt The temperature of the material is adjusted and controlled between 210°C and 230°C, the initial thickness of t...

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Abstract

A preparation method of ultra-thin and ultra-mirror polypropylene aluminized substrate film, using high-melt-strength polypropylene material as the surface layer of the film to blow the film under the condition of 210°C-230°C, and blown into film bubbles by automatic wind ring , after the thickness of the film bubble is adjusted by a thickness measurement module, it is clamped and pulled, and then preheated, and the online longitudinal stretching is more than 3 times, and the temperature during the online longitudinal stretching is the temperature of the high melt strength. The softening point temperature of polypropylene material is 20°C-35°C, the film after online longitudinal stretching is annealed and cooled, and the cooled film is subjected to secondary thickness measurement, corona treatment, edge removal, and finally high-speed harvesting roll. The preparation method is formed at one time, and the production efficiency is high. The prepared polypropylene aluminized substrate film has an excellent surface super-mirror effect, improves the optical performance of the film, ensures the appearance of vacuum aluminized, and breaks through the traditional casting method to produce polypropylene film. The thickness limit of the film can realize the reduction application of polypropylene film.

Description

technical field [0001] The invention belongs to the field of film packaging, in particular to a method for preparing an ultra-thin and ultra-mirror aluminum-plated substrate film. Background technique [0002] Aluminized film is a composite flexible packaging material formed by coating the surface of a plastic film (aluminized substrate film) with a very thin layer of metal aluminum by a special process. The most commonly used processing method is the vacuum aluminized method. Metal aluminum is melted and evaporated at high temperature in a high vacuum state, so that the aluminum vapor deposits and accumulates on the surface of the plastic film, so that the surface of the plastic film has a metallic luster. Because it has both the characteristics of plastic film and the characteristics of metal, it is a cheap and beautiful packaging material with excellent performance and strong practicability. [0003] The role of aluminum plating on the surface of the film is to shading a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02B29C71/02B29K23/00B29L7/00
CPCB29C71/02B29C2071/022B29K2023/12B29L2007/00
Inventor 范亮丰佩川盖文倩粟先荣杨致
Owner 烟台丰福莱薄膜科技有限公司
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