Composite punching film and its producing method

Abstract

A compound punching film and preparation thereof, said punching film consisting of a layer of plastic film and one or two side compound non-woven fabrics. On plastic film is of evenly spread tiny mesh, density thereof is 170-500 mesh / C sqm ,perforating rate is 10-35%. Said whole compound film is perforated of evenly big mesh , aperture thereof greater than that of tiny mesh two times, the shape of big mesh is of funnel, thereof protruding to one side and on the surface of awl is of tiny mesh. Said invention combines PE film technique and punching one, making compound of a layer of non-woven fabric and cast film with the help of high melting temp. of cast film, also making use of mesh cage through vacuum suction nozzle punching tiny mesh, thereafter punching big mesh by pressure roller machine, thus to prepare new compound punching film with good permeability, softness and strong third dimension.

Description

technical field [0001] The invention relates to a hygienic fabric capable of absorbing human exudates used in sanitary products such as women's sanitary napkins, sanitary pads, adult trousers, baby diapers, wet tissue paper, medical mattresses, and masks, and a production method thereof. In particular, it relates to a composite perforated film produced by two-layer or three-layer substrates through a composite and perforation process and a manufacturing method thereof. Background technique [0002] Composite perforated film, as a kind of sanitary fabric, has been widely used in absorbent sanitary products such as sanitary napkins, disposable diapers, changing pads, and underwear liners. This kind of fabric is generally composed of a perforated film layer and a non-woven moisture-absorbing layer. It has rapid permeability and absorption to liquids, and is especially suitable as a sanitary fabric for absorbing human body fluids, so it has a wide range of applications in sanita...

AI Technical Summary

Problems solved by technology

But this method and product have the following deficiencies: 1. Due to the existence of hot melt adhesive, under the action of moisture and human body temperature, it undergoes chemical changes, causing discomfort such as allergies and itching on human skin

2. One of the raw materials of this method is PE film and is heated by gas. From the perspective of the whole production process, the first step needs to produce PE film, and the second step uses this PE film to produce composite sanitary fabrics. Among them, PE The production of membranes and the production of composite sanitary fabrics require two heatings, which is not conducive to saving energy, but also increases the production process, thus complicating the entire production process, with low efficiency and high cost, which is not conducive to large-scale industrial production

3. The product is composed of a layer of plastic perforated film and a layer of non-woven fabric. There are still many deficiencies in terms of function and performance, such as poor air permeability and permeability; too strong plastic feeling and insufficient three-dimensional effect; elasticity and Poor softness, not enough comfort, etc.

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