Method for determining gluing viscosity of water-based adhesive and application thereof

Abstract

The invention discloses a method for determining gluing viscosity of a water-based adhesive and an application thereof. The method comprises the following steps of arranging a water-based adhesive supplementing unit, a rotational viscometer method measuring unit and a water-based adhesive collecting unit, wherein height differences are sequentially formed between the water-based adhesive supplementing unit, the rotational viscometer method measuring unit and the water-based adhesive collecting unit and the water-based adhesive flows in a flowing pipeline for communicating the water-based adhesive supplementing unit, the rotational viscometer method measuring unit and the water-based adhesive collecting unit, and the rotational viscometer method measuring unit is provided with a rotational viscometer; respectively placing water-based adhesives to be determined in the water-based adhesive supplementing unit and the rotational viscometer method measuring unit, heating the water-based adhesives to be determined to ensure that the temperatures of the water-based adhesives reach a test temperature; and selecting a rotor of a corresponding model for determining the viscosity of the water-based adhesive in the rotational viscometer method measuring unit under the selected rotating speed. The method accords with the actual condition that the water-based adhesive flows when being applied, is simple in process and convenient to operate, is capable of rapidly and directly determining the gluing viscosity of the water-based adhesive, and can be well applied to the pre-judgment on machine applicability on the water-based adhesive before a gluing test is carried out by a water-based adhesive gluing machine.

Description

technical field [0001] The invention relates to the technical field of water-based adhesive testing, and more particularly, relates to a method and application for measuring the viscosity of water-based adhesive during gluing. Background technique [0002] The viscosity of water-based adhesive can be defined as the ratio of its shear stress to shear rate. It is used to measure the internal friction of water-based adhesive during the flow process. It is the gluing performance of water-based adhesive in production applications. main influencing factors. Viscosity testing methods mainly include rotational viscometer method and viscosity cup method. [0003] The rotary viscometer method is to put the container containing the sample into the constant temperature bath, immerse the rotor vertically in the center of the sample and make the liquid level reach the level mark of the rotor, start the rotary viscometer, and read when the pointer is on the disc when it rotates. The read...

AI Technical Summary

Problems solved by technology

If the viscosity value of water-based adhesive is detected by the existing rotational viscometer method and viscosity cup method, it often appears that the product viscosity label value at the time of purchase meets the product requirements, or the laboratory test judges that the viscosity value of the water-based adhesive product is qualified, and the application The viscosity of the water-based adhesive is unqualified in actual production, and with the substantial increase in the production speed of the enterprise, the viscosity of the water-based adhesive has a greater impact on the production situation. Installing a rotary on the existing tobacco production line On-line real-time detection of viscometers requires major changes to equipment and production lines, which is difficult to implement and popularize, and the cost is also high. This online detection is not suitable for the viscosity judgment of water-based adhesive products before they are produced and applied.

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