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Polyamide film roll and its manufactring method

A technology of polyamides and manufacturing methods, applied in the field of polyamide film rolls and its manufacture, can solve the problems of film roll shape deterioration, slippery change, wrinkling, etc., achieve excellent strength and gas barrier properties, and prevent deterioration Effect

Inactive Publication Date: 2005-01-05
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the production process of the film, as well as in the processes of printing and lamination, the change in the amount of inorganic particles added to the film for the purpose of improving the slippery will cause a very large change in the slippery property, and there is a roll shape of the film roll. Deterioration, periodic wrinkling, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] For sheet A formed of 97.00% by weight of nylon 6 (relative viscosity = 2.8), 3.00% by weight of silica (average particle diameter: 3.0 μm) and 96.15% by weight of nylon 6 (relative viscosity = 2.8), polyadipyl Sheet B formed by 3.00% by weight of m-xylylenedimethylamine (relative viscosity = 2.1), 0.15% by weight of ethylene bis-octadecamide, and 0.70% by weight of silica (average particle diameter: 1.8 μm) was pre-dried, respectively. As shown in Table 1, while continuously supplying 5.0% by weight of sheet A and 95.0% by weight of sheet B to the hopper directly above the extruder using a quantitative screw feeder, they were mixed in the hopper and heated at 270°C. It was melt-extruded with a uniaxial extruder, and then quenched to obtain an unstretched film with a thickness of 257 μm. The hopper has a capacity capable of holding 150 kg of raw material chips, and the discharge rate of the extruder is 450 kg per hour. In addition, the inclination angle of the hopper i...

Embodiment 2

[0053] Each raw material sheet was pre-dried separately, and 3.0 wt. The mixture was mixed in a hopper, melt-extruded with a single-screw extruder at 280° C., and quenched to obtain an unstretched film with a thickness of 180 μm. The hopper has a capacity capable of holding 100 kg of raw material chips, and the discharge rate of the extruder is 450 kg per hour. In addition, the inclination angle of the hopper is 70°.

[0054] The unstretched film was preheated at 100°C for 10 seconds, stretched 4.0 times in the transverse direction at 78°C with a tenter, and then heat-treated at 82°C for 10 seconds to continuously produce a polyamide-based film with a thickness of 45 μm. More than 1000m. The fluctuation range of the film surface temperature during continuous production of 1000m film is within the range of ±0.8°C average temperature in the preheating process, ±0.5°C average temperature in the stretching process, and ±0.5°C average temperature in the heat treatment process. T...

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PUM

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Abstract

A coiled polyamide film features that the sampling positions are arranged on the coiled polyamide film at intervals of 100 m, the first sampling position is far from its beginning end by 2 m, the last sampling position is far from its terminated end by 2 m. The average static friction coefficient at 23 deg.C and 65% RH is less than 0.35. Its preparing process is also disclosed.

Description

technical field [0001] The present invention relates to a film roll formed by winding a polyamide-based film, and specifically relates to defects in the roll state of the film roll in the production process and post-processing caused by fluctuations in the amount of inorganic particles in the polyamide-based film roll. A roll of polyamide film in which deflection and wrinkling in the width direction of the film rarely occurs during the process and a method for producing the same. Background technique [0002] In the past, films composed of polyamide resins represented by nylon 6 and nylon 66 have excellent strength and gas barrier properties compared with films formed by other common polymers. When used as packaging materials such as food packaging, it can effectively prevent the deterioration of the contents and damage caused by vibration and shock during transportation, so it is widely used as various packaging materials. [0003] Films formed of conventional polyamide-ba...

Claims

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Application Information

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IPC IPC(8): B29C55/14
Inventor 小田尚伸西忠嗣宫口义纪
Owner TOYO TOYOBO CO LTD
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