PETG cast film and preparation process thereof

A preparation process and cast film technology, which is applied in the field of thermoplastic polyester, can solve the problems of large material shrinkage, card body warping, strong reflection on the card surface, etc., and achieve less appearance defects, high wetting tension, and low shrinkage. The effect of small thickness deviation

Inactive Publication Date: 2017-01-11
JIANGSU HUAXIN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of the casting film is smooth, and the adhesion between materials is avoided by the surface anti-adhesive layer. Usually, the adoption of this process will cause the product to have the following disadvantages: (1) The surface is an anti-adhesive layer, which will affect the thermal bonding between materials and the surface Printing (2) The shrinkage rate of the material is relatively large, and it is easy to cause the card body to warp when used for card making
(3) The surface is relatively smooth, and the surface of the card made is highly reflective, which is not conducive to reading information on the surface of the card

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Material formula: GS2 98.0 wt %, antioxidant KY586 1.0 wt %, antistatic agent ethoxylated oleylamine 0.5 wt %, ultraviolet absorber 2-hydroxy-4-n-octyloxybenzophenone 0.5 wt %;

[0025] Molding:

[0026] A. Mixing of raw materials: Weigh the raw materials according to the formula, and use a high-speed mixer to mix the materials.

[0027] B. Melting and plasticizing of materials: the operating temperature distribution of the extruder is: 160°C (zone 1), 190°C (zone 2), 210°C (zone 3), 240°C (zone 4), 250°C (zone 5), 255°C (zone six), 255°C (zone seven), control the screw speed to 30rpm, so that the speed of the melt flowing out of the die is consistent with the speed of the second roller;

[0028] C Die head temperature: the die head temperature is 260°C;

[0029] D. Cooling: The three rollers are arranged horizontally, and the temperature is controlled as follows: the first roller is 20°C, the second roller is 20°C, and the third roller is 60°C;

[0030] E. Traction,...

Embodiment 2

[0032] Material formula: GS2 99.3 wt %, antioxidant 1010 0.4 wt %, antioxidant 168 0.1 wt %, antistatic agent ethoxylated oleylamine 0.1 wt %, UV absorber 2-hydroxy-4-n-octyloxy Benzophenone 0.1wt%;

[0033] Molding:

[0034] A. Mixing of raw materials: Weigh the raw materials according to the formula, and use a high-speed mixer to mix the materials

[0035] B. Melting and plasticizing of materials: the operating temperature distribution of the extruder is: 170°C (zone 1), 195°C (zone 2), 210°C (zone 3), 240°C (zone 4), 255°C (zone 5), 260°C (zone six), 260°C (zone seven), control the screw speed to 20rpm, so that the speed of the melt flowing out of the die is consistent with the speed of the second roller;

[0036] C Die head temperature: the die head temperature is 260°C;

[0037] D. Cooling: The three rollers are arranged horizontally, and the temperature is controlled as follows: the first roller is 5°C, the second roller is 20°C, and the third roller is 60°C;

[0038...

Embodiment 3

[0040] Material formula: GS2 98.8 wt %, antioxidant KY586 0.7 wt %, antistatic agent ethoxylated oleylamine 0.2 wt %, ultraviolet absorber 2-hydroxy-4-n-octyloxybenzophenone 0.3 wt %;

[0041] Molding:

[0042] A. Mixing of raw materials: Weigh the raw materials according to the formula, and use a high-speed mixer to mix the materials

[0043] B. Melting and plasticizing of materials: the operating temperature distribution of the extruder is: 160°C (zone 1), 190°C (zone 2), 210°C (zone 3), 220°C (zone 4), 225°C (zone 5), 235°C (sixth zone), 230°C (seventh zone), control the screw speed to 70rpm, so that the speed of the melt flowing out of the die is consistent with the speed of the second roller;

[0044] C Die head temperature: the die head temperature is 230°C;

[0045] D. Cooling: The three rollers are arranged horizontally, and the temperature is controlled as follows: the first roller is 10°C, the second roller is 15°C, and the third roller is 55°C;

[0046] E. Tracti...

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Abstract

The invention discloses a PETG cast film and a preparation process thereof. The components of the substrate include: 98.0-99.3 wt% of PETG resin, 0.5-1.0 wt% of antioxidant, 0.1-0.5wt % of antistatic agent, and 0.1-0.5wt % of ultraviolet absorbent. The antioxidant is at least one of hindered phenols; the antistatic agent is at least one of ethoxylated alkyl amines; and the ultraviolet absorbent is 2-hydroxy-4-n-octyloxybenzophenone. The product is high in wetting tension and low in shrinkage rate and thickness deviation, the appearance defect is few, the heat seal and heat transfer function can be achieved, and the percent of pass is up to 90%, the requirements in the fields of cards, anti-counterfeiting films, packaging films, decorative films and the like can be met. The technological process is simple and feasible, industrial production is easy to realize, and the method has excellent industrial application value.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polyester, and in particular relates to a PETG cast film and a preparation process thereof. Background technique [0002] PETG material has been used for 10 years as the substrate for the second generation of resident ID cards. The substrate is prepared by calendering and has the advantages of uniform surface roughness. Patent No. ZL 200410041031.8 "PETG card base for resident ID card and its manufacturing process" provides a technical solution. However, due to the calendering method, ADD2 needs to be added to avoid sticking to the roller during the production process. Poor performance. The calendering method is used to prepare PETG film, the thickness deviation is large, there must be a speed ratio between the rollers, the product shrinkage rate is large, and the product qualification rate is only 60% due to factors such as appearance defects, so it is necessary to develop a new process to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K5/134C08K5/526C08K5/17C08K5/132B29C47/92B29C41/52B29C48/92
Inventor 陈国强吴彬周建石何培武
Owner JIANGSU HUAXIN NEW MATERIAL
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