Modified polyurethane film and application thereof

A polyurethane film and polyurethane technology, applied in the direction of conveyors, transportation and packaging, etc., can solve the problems of functional masterbatch precipitation, limited service life, and can not fundamentally improve the low friction and temperature resistance of the surface of the conveyor belt, to achieve Fast and effective separation, improved compatibility, and low friction coefficient effects

Active Publication Date: 2018-03-20
SHANGHAI YONGLI BELTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional method is to add a certain amount of functional masterbatch, but this method has a limited service life, and at the same time, there is precipitation of functional masterbatch, which cannot fundamentally improve the surface low friction and temperature resistance of the conveyor belt

Method used

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  • Modified polyurethane film and application thereof
  • Modified polyurethane film and application thereof
  • Modified polyurethane film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 It is the process flow diagram and the figure 2 As shown in the structural schematic diagram of the low-friction and high-temperature-resistant TPU light-duty conveyor belt of the present invention, the manufacturing method of the low-friction and high-temperature-resistant TPU light-duty conveyor belt comprises the following steps:

[0031] S1: Ultra-low shrinkage polyester fabric shaping: the warp direction adopts low shrinkage polyester activated yarn with a linear density of 1000D, and the weft direction adopts polyester monofilament with a diameter of 0.3mm. The density is 42 threads / inch, and the weaving method is 2 / 2 broken twill. Ultra-low shrinkage polyester fabric is shaped under infrared heating conditions;

[0032] S2: Polycarbonate glue is primed on the ultra-low shrinkage polyester fabric after setting, and the surface temperature of the glue is 120-130°C to form a primer layer;

[0033] S3: Extrude a rubber-modified polyurethane film with...

Embodiment 2

[0035] see figure 1 It is the process flow diagram and the figure 2 As shown in the structural schematic diagram of the low-friction and high-temperature-resistant TPU light-duty conveyor belt of the present invention, the manufacturing method of the low-friction and high-temperature-resistant TPU light-duty conveyor belt comprises the following steps:

[0036] S1: Ultra-low shrinkage polyester fabric shaping: the warp direction adopts low shrinkage polyester activated yarn with a linear density of 1000D, and the weft direction adopts polyester monofilament with a diameter of 0.3mm. The density is 42 threads / inch, and the weaving method is 2 / 2 broken twill. Ultra-low shrinkage polyester fabric is shaped under infrared heating conditions;

[0037] S2: Polycarbonate glue is primed on the ultra-low shrinkage polyester fabric after setting, and the surface temperature of the glue is 120-130°C to form a primer layer;

[0038] S3: Extrude a rubber-modified polyurethane film with...

Embodiment 3

[0040] see figure 1 It is the process flow diagram and the figure 2 As shown in the structural schematic diagram of the low-friction and high-temperature-resistant TPU light-duty conveyor belt of the present invention, the manufacturing method of the low-friction and high-temperature-resistant TPU light-duty conveyor belt comprises the following steps:

[0041] S1: Ultra-low shrinkage polyester fabric shaping: the warp direction adopts low shrinkage polyester activated yarn with a linear density of 1000D, and the weft direction adopts polyester monofilament with a diameter of 0.3mm. The density is 42 threads / inch, and the weaving method is 2 / 2 broken twill. Ultra-low shrinkage polyester fabric is shaped under infrared heating conditions;

[0042] S2: Polycarbonate glue is primed on the ultra-low shrinkage polyester fabric after setting, and the surface temperature of the glue is 120-130°C to form a primer layer;

[0043]S3: Extrude a rubber-modified polyurethane film with ...

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Abstract

The invention belongs to the technical field of conveying belts in food industry, specifically relates to a modified polyurethane film and application thereof and particularly relates to a low-surfacefriction, temperature-resistant and light conveying belt produced from the modified polyurethane film for the food industry. The modified polyurethane film is produced from low-surface friction temperature-resistant polyurethane through curing, and low-surface friction temperature-resistant polyurethane is prepared from polyurethane, silicone rubber and a compatibilizer in a weight ratio of 100 to (15-25) to (3-5) through blending. The modified polyurethane film is the low-surface friction, temperature-resistant and light conveying belt produced through a covering layer, a polyester fabric with ultra-low shrinkage property is taken as a skeleton of the low-surface friction, temperature-resistant and light conveying belt, and the skeleton is adhered with the covering layer through a poly-carbon glue prime coat. By utilizing silicone rubber modified polyurethane, the temperature resistance is greatly improved, can be increased by 30 DEG C than that of conventional TPU and can meet the front-back conveying requirements of a flour food drying oven; and the modified polyurethane film can be applied to the conveying of foods containing heavy oil, and a phenomenon that the conveying beltturns downwards due to the shrinkage of the fabric is avoided, so that the smooth conveying of the foods is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of conveyor belts in the food industry, and in particular relates to a modified polyurethane film and its application, in particular to making a surface low-friction, temperature-resistant light conveyor belt for the food industry. Background technique [0002] With the vigorous development of the food industry, higher requirements have been put forward for the conveyor belt, which is an important equipment of the assembly line. The light conveyor belt used in the food industry is made of non-toxic and harmless materials, and is suitable for transporting food, food raw materials and other substances. [0003] At present, the main material of non-toxic food conveyor belt is thermoplastic polyurethane (TPU type). Polyurethane is a non-hydrocarbon polar polymer material with outstanding wear resistance, oil resistance and high strength. However, the molecular structure of polyurethane contains a large amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L83/04C08J5/18B65G15/34
CPCB65G15/34C08J5/18C08J2375/04C08J2483/04
Inventor 代飞
Owner SHANGHAI YONGLI BELTING
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