Manufacturing process of three-dimensional reticular layer

Abstract

The invention discloses a manufacturing process of a three-dimensional reticular layer. The manufacturing process comprises the following steps: mixing a non-viscous high-friction-coefficient isotactic co-polypropylene elastomer, homo-polypropylene and an auxiliary agent, and carrying out melt extrusion through a screw extruder; spraying the melt liquid extruded by the screw extruder from a nozzle containing a plurality of spraying holes to form a plurality of thin strip compositions; and contacting and bending the thin strip compositions and cooling water to form irregular rings to form the three-dimensional reticular layer. According to the process, the high-friction-coefficient copolymerized PP and conventional PP raw materials are creatively mixed and applied to preparation of the reticular layer, and the thin strip compositions are in contact with the cooling water and then are randomly bent to form a special structure of the disordered three-dimensional reticular layer, by introducing the high-friction material, the friction force of the strip-shaped objects in contact with each other is increased so as to improve the supporting strength, under the special structure, the effect of the high-specification PP material can be achieved through the low-specification PP material, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of network structure preparation, in particular to a manufacturing process of a three-dimensional network layer. Background technique [0002] At present, the preparation of the three-dimensional network layer mainly involves random spiral winding and partial bonding of thermoplastic resin and cooling water. Common equipment such as water tanks and forming molds are used to pre-accommodate thermoplastic resin melt in the forming mold, and then pressurize the melt to form itself. The holes at the bottom of the mold are extruded to form thin strips, and after contacting the cooling water in the water tank, a mesh layer is formed, which is pulled by a conveying device, as described in Patent Document 1. [0003] Or some enterprises improve the above-mentioned structure, as described in Patent Document 2, a chute is installed obliquely above the water tank, and a water supply device is installed on the chute, so...

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Problems solved by technology

[0004] In view of the special structure of the three-dimensional mesh layer, it is used as the inner core of mattresses, pillows, etc., but in terms of mattresses, conventional mattresses are usually netted springs or tube springs. For mattresses with different hardness standards, the cost of springs required by different hardnesses is obviously different. For mesh layer mattresses, if different hardness is required, polymer materials of different specifications need to be selected, and the cost varies greatly. , it is necessary to find another way to solve the problem

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