Melting method and its device

Abstract

Provided is a method of effectively melting a hot-melt material which is a solid at normal temperature, and an apparatus therefor.The melting apparatus is provided with a heating / melting means comprising a spiral formed passage a formed by rolling up two plates in a spiral form and a spiral shaped passage b in the axial direction both of which are alternately arranged, while the spiral formed passage a is a passage for a heating medium and the passage b in the axial direction is a passage for the hot-melt material, a space part for supplying the hot-melt solid material to the melting means at the upper part of the heating / melting means, a supply means for supplying the solid material to the space part and a molten liquid receiving pan part with a liquid extraction port at the lower part of the heating / melting means. In the melting method using the melting apparatus, the hot-melt solid material is supplied from the supply means to the space part and melted by the heating / melting means, and the heated / melted molten liquid is extracted from the pan part.

Description

technical field [0001] The invention relates to a melting (melting) melting method and a device thereof. More specifically, it relates to a melting method and its device for efficiently melting a hot-melt substance that is solid at normal temperature, shortening the heating process to obtain a melt that is prevented from thermal aging. Background technique [0002] For hot-melt substances that are solid at room temperature, such as synthetic resins such as polyethylene terephthalate (PET) and their monomers, sugar, paraffin, turpentine, and sulfur, etc., depending on their purpose, sometimes they must be melted in the melt. operate in the state. When melting such a substance, generally, the substance is crushed to an appropriate size, and a melting device equipped with a heating device such as a jacket and a stirrer is used if necessary. [0003] Moreover, when the heating and melting efficiency of these devices is not high enough, heating coils, vertical plates, etc. are ...

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Problems solved by technology

[0004] However, in most cases, the efficiency of heating and melting of these devices is not high enough, and it takes a long time for some heated and melted substances to be completely melted due to their characteristics, and the efficiency is very low when carrying out industrial production.

In addition, when the hot-melt substance is a substance with poor thermal stability, if a large-scale device is used, there will be such a problem that it will stay in the molten state for a long time, heat aging will occur, and it will be difficult to obtain high-quality materials. the melt

[0005] In addition, for thermoplastic resins such as polyester, nylon, polyethylene, polypropylene, polystyrene resin, etc., which have high melt viscosity, it is possible to melt them in a short time by melting them with a melt extruder, but For substances with low viscosity of the melt (in other words, the flow rate of the melt is fast), due to the performance of the melt extruder, it cannot be said to be an effective method for processing such substances.

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