Low-temperature hot melt adhesive, and preparation method and preparation assembly line thereof

Abstract

The invention relates to a low-temperature hot melt adhesive, and a preparation method and a preparation assembly line thereof. The low-temperature hot melt adhesive comprises a core layer, one side or two sides of the core layer is / are cooperatively provided with a support layer, and the support layer is externally provided with an adhesive sealing layer. The preparation method comprises the following steps: pre-adjusting equipment, and preparing raw materials; extruding the core layer by using double screws of a screw machine, laminating two preset non-woven fabrics towards the core layer, and integrally outputting to obtain a semi-finished product; cooling, cutting and rolling the output semi-finished product; and taking any cut and rolled semi-finished product, coating two surfaces of the semi-finished product with sealing glue layers to obtain a product, and processing to obtain the finished product. The preparation assembly line of the low-temperature hot melt adhesive comprises the screw machine, one or two sets of conveying rollers are arranged on the two sides of an output port matched with the screw machine, and an ice water unit, a cutting and rolling unit and adhesive sealing layer coating equipment are arranged behind the output port. The hardness of the prepared final product is 57 + / -3 D, the low-temperature deflection resistance can reach 80000 times or more, the surface bonding performance is good, the softening temperature is low, and subsequent processing and use are facilitated.

Description

technical field [0001] The present invention relates to adhesives; general non-mechanical bonding methods; bonding methods not included in other categories; the technical field of application of adhesive materials, in particular to a low-temperature hot melt adhesive and its preparation method and production line. Background technique [0002] Before the emergence of low-temperature hot melt adhesives, Gangbao was used as a product for similar purposes. Due to the development of the industry, the improvement of living standards and people's awareness, people began to pursue products that are more environmentally friendly, durable and take into account production efficiency. Based on this , Low temperature hot melt adhesive appears. [0003] Compared with Gangbao, the low-temperature hot-melt adhesive has a better shaping effect after cooling down, and is waterproof, has a shorter curing time, and has higher production efficiency, which itself is better than Gangbao. It has ...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing technology, it is difficult to ensure the texture of the product on the basis of improving the mechanical properties of the product, including lightness, hardness, elasticity, stiffness, etc., or it is impossible to take into account the support, and the performance cannot be maintained at low temperatures, which leads to the current The application of some low-temperature hot melt adhesives has great limitations and cannot be used in more occasions