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Modified PET tangle film and manufacturing method thereof

A modified and conjunctival technology, which is applied in the field of packaging materials, can solve the problems of low film transparency, high crystallinity, poor kink film effect, etc., and achieve good oil resistance and fragrance retention, good food hygiene, and good storage stability. Effect

Inactive Publication Date: 2018-01-23
安徽嘉美包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the main component of the material is PET resin, the crystallinity is high, the film transparency is low, and it has high resilience, so it is less effective as a kink film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified PET twist film, according to weight parts, take 10 parts of modified PET materials, 4 parts of polyamide resin, 3 parts of modified maleic acid resin, 1.6 parts of modified dammar resin, 1 part of erucamide, propylene glycol 2 parts of methyl ether, 2 parts of tributyl citrate, 1 part of diacetone diamine, 0.3 parts of styrene, 1 part of dioctyl sebacate, 0.2 parts of tricresyl phosphate, 2 parts of aziridine, ammonium molybdate 0.1 part, 1 part of isobutyl methacrylate, 5 parts of rosin resin.

[0017] The preparation method comprises the following steps:

[0018] A. Select a modified PET material with an average molecular weight of 40,000-50,000, add erucamide blocker and mix thoroughly, then add other raw materials in proportion to fully mix, and dry until the water content is lower than 400ppm;

[0019] B. The above mixture is plasticized and melted at 250°C in a twin-screw extruder with vacuum exhaust, extruded through a T-shaped die at 250°C to form a ...

Embodiment 2

[0022] A modified PET twist film, according to weight parts, take 20 parts of modified PET materials, 6 parts of polyamide resin, 4 parts of modified maleic acid resin, 2.4 parts of modified dammar resin, 2 parts of erucamide, propylene glycol 3 parts of methyl ether, 3 parts of tributyl citrate, 2 parts of diacetone diamine, 0.5 parts of styrene, 2 parts of dioctyl sebacate, 0.4 parts of tricresyl phosphate, 4 parts of aziridine, ammonium molybdate 0.2 parts, 2 parts of isobutyl methacrylate, 7 parts of rosin resin.

[0023] The preparation method comprises the following steps:

[0024] A. Select a modified PET material with an average molecular weight of 40,000-50,000, add erucamide blocker and mix thoroughly, then add other raw materials in proportion to fully mix, and dry until the water content is lower than 400ppm;

[0025] B. The above mixture is plasticized and melted at 250°C in a twin-screw extruder with vacuum exhaust, extruded through a T-shaped die at 250°C to fo...

Embodiment 3

[0028] A modified PET twist film, according to weight parts, take 15 parts of modified PET materials, 5 parts of polyamide resin, 3 parts of modified maleic acid resin, 2 parts of modified dammar resin, 2 parts of erucamide, propylene glycol 2 parts of methyl ether, 2 parts of tributyl citrate, 1 part of diacetone diamine, 0.3 parts of styrene, 1 part of dioctyl sebacate, 0.2 parts of tricresyl phosphate, 3 parts of aziridine, ammonium molybdate 0.2 parts, 2 parts of isobutyl methacrylate, 6 parts of rosin resin.

[0029] The preparation method comprises the following steps:

[0030] A. Select a modified PET material with an average molecular weight of 40,000-50,000, add erucamide blocker and mix thoroughly, then add other raw materials in proportion to fully mix, and dry until the water content is lower than 400ppm;

[0031] B. The above mixture is plasticized and melted at 250°C in a twin-screw extruder with vacuum exhaust, extruded through a T-shaped die at 250°C to form a...

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Abstract

The invention discloses a modified PET tangle film and a manufacturing method thereof. The modified PET tangle film comprises the following raw materials in parts by weight: 10 to 20 parts of modifiedPET material, 4 to 6 parts of polyamide resin, 3 to 4 parts of modified maleic resin, 1.6 to 2.4 parts of modified Dama resin, 1 to 2 parts of erucyl amide, 2 to 3 parts of propylene glycol monomethyl ether, 2 to 3 parts of tributyl citrate, 1 to 2 parts of diacetone diamine, 0.3 to 0.5 part of styrene, 1 to 2 parts of dioctyl sebacate, 0.2 to 0.4 part of tricresyl phosphate, 2 to 4 parts of aziridine, 0.1 to 0.2 part of ammonium molybdate, 1 to 2 parts of isobutyl methacrylate and 5 to 7 parts of rosin resin. The manufacturing method comprises the following steps: mixing and drying the aboveraw materials, plasticizing and melting, extruding to form a film sheet, performing rapid-cooling shaped on a cooling roller, preheating by a heating roller, performing longitudinal stretching of 1:(2-5) between a low-speed roller and a high-speed roller, shaping by a shaping roller, cutting edges, rolling and performing aging treatment to obtain a finished product. The production efficiency andthe product performance of the modified PET tangle film can be greatly improved.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a method for manufacturing a packaging twist film. Background technique [0002] Uniaxially stretched modified polyethylene terephthalate twist film is a new type of green packaging material developed in recent years. Compared with traditionally used polyethylene and polyvinyl chloride films, it has high strength, rigidity Large, non-toxic, easy to degrade, easy to color, good gloss and transparency, easy processing and other advantages, it is widely used in various items such as handicrafts, daily necessities, metal products, especially food packaging. [0003] Due to the high crystallinity of the material, the product has low transparency and poor strength due to the blow molding method used in the existing technology, it is not suitable for high-speed printing and used for mechanized automatic packaging. [0004] A laminated film is formed by multi-layer co-aiding and then ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L51/08C08L77/00C08L93/04C08K13/02C08K5/20C08K5/11C08K5/523C08K5/3412C08K3/24
Inventor 汪连生汪金云
Owner 安徽嘉美包装有限公司