Envelope type wood pulp non-woven fabric and production process thereof

Abstract

The invention discloses an envelope type wood pulp non-woven fabric, which comprises a wood pulp fiber layer, wherein the wood pulp fiber layer is positioned between two filament fiber layers; and the filament fiber layers are formed by treating fiber particles through a melt extrusion machine and then jetting into a net through a filament fiber netting device and are subjected to rolling fusion by a hot rolling roll to envelope the wood pulp fiber layers therein. When the lower filament fiber layer moves to the space below the wood pulp fiber netting device along with a net conveying curtain, wood pulp fiber mixture is uniformly laid on the lower filament fiber layer by a material mixing cabin through a material metering distributor under the action of the wood pulp fiber netting device; the wood pulp fiber layer is formed of the wood pulp fiber mixture; a filament fiber net is then laid on the lower filament fiber layer, on which the wood pulp fiber layer is laid, through a filament fiber netting device; at the time, the laid filament fiber net forms the upper filament fiber layer; and the upper filament fiber layer and the lower filament fiber layer are fused to envelope the middle wood pulp fiber layer therein so as to prepare the non-woven fabric through rolling fusion by the hot rolling roll.

Description

technical field [0001] The invention relates to a non-woven fabric and a production process thereof, in particular to an enveloping wood pulp non-woven fabric and a production process thereof. Background technique [0002] Non-woven fabrics, also known as non-woven fabrics, are composed of directional or random fibers. They are a new generation of environmentally friendly materials. Low cost, recyclable and so on. For example, polypropylene (pp material) pellets are mostly used as raw materials, which are produced by continuous one-step process of high-temperature melting, spinning, laying, and hot-pressing coiling. It is called cloth because of its appearance and certain properties. Non-woven fabric is a kind of fabric formed without spinning and weaving. It is just oriented or randomly arranged textile short fibers or filaments to form a web structure, and then reinforced by mechanical, thermal bonding or chemical methods. . Non-woven fabrics break through the traditio...

AI Technical Summary

Problems solved by technology

Non-woven fabrics break through the traditional textile principles, and have the characteristics of short process flow, fast production rate, high output, low cost, wide application, and multiple sources of raw materials; however, non-woven fabrics are prone to pilling and poor dimensional stability.

[0003] The existing patent number is CN201120330261.1, and the patent titled "Non-woven fabric, multi-layer non-woven fabric and multi-layer non-woven fabric structure" discloses a non-woven fabric structure, which has three laminated layers, including a The upper layer of fiber web, a net-like interlayer of woven cloth and the lower layer of fiber web, and the interlayer of mesh-like interlayer is sandwiched between the upper layer of fiber web and the middle of the lower layer of fiber web, together forming a high temperature and high pressure resistant The non-woven fabric structure can improve the defects of poor dimensional stability and easy pilling of non-woven fabrics after hot pressing or high-temperature processing; but it has the disadvantage that the bonding between layers is not strong enough, so its structure needs to be further improved

Images