Device for testing water vapor permeability by aid of weighing method

Abstract

The invention discloses a device for testing water vapor permeability by the aid of a weighing method. The device comprises a weighing device, a moisture permeability cup, an environmental cavity, a moisture permeability cup bracket, a lifting device and a rotating device. The weighing device comprises a collection component connected with the environmental cavity, the moisture permeability cup and the moisture permeability cup bracket are positioned in the environmental cavity, the moisture permeability cup is placed on the moisture permeability cup bracket, the moisture permeability cup bracket is matched with the weighing device, connected with the automatic lifting device through a connecting mechanism and connected with the rotating device through a connecting mechanism, a sealing component is arranged at the joint of the collection component and the environmental cavity, the collection component is matched with the sealing component, a liquid guide hole is arranged on the sealing component, the moisture permeability cup bracket is provided with a through hole, and the size of the through hole is larger than that of the collection component of the weighing device. The device is simple in structure, high in reliability and universality and convenient in application, and realizes multi-station testing and automatic weighing through detection by the aid of a weight increasing method, a weight reduction method and an inverted cup method for the water vapor permeability.

Description

technical field [0001] The invention relates to a test device for detecting the water vapor transmission rate of materials, in particular to a weighing method water vapor transmission rate test device which can realize the detection of material weight gain method, weight loss method and inverted cup method. Background technique [0002] With the continuous improvement of the level of science and technology, the production and development of packaging materials are gradually developing in the direction of lighter, thinner, more convenient and more economical. The impact of the quality and safety of industrial products has made the importance of water vapor transmission rate testing increasingly prominent, and the requirements for this index of materials have become increasingly strict. Whether the water vapor transmission rate of materials meets the standard has been related to a large number of packaging The key to whether the material is qualified or scrapped. There are tw...

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Problems solved by technology

[0004] The present invention aims to solve the problems existing in the prior art that the degree of detection automation is low, the data accuracy is low, and the test efficiency is low, and the three methods of weight-increasing method, weight-reducing method and cup-inverting method cannot be tested on one device; it provides A water vapor transmission rate test device by weighing method; it has simple structure, high reliability, strong versatility, convenient application, and realizes multi-station test of water vapor transmission rate, and weight gain method (desiccant method) , weight reduction method (water method), automatic weighing for detection of inverted cup method

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