WIPE AND MANUFACTURING METHOD THEREOF

Abstract

A wipe comprises upper and lower melt-blown fiber webs and an intermediate wood pulp fiber web containing a hot-melt adhesive substance. Melt-blown fibers of the melt-blown fiber webs are interwoven in the wood pulp fiber web. A manufacturing method of a wipe can manufacture a water-absorbing wipe, effectively prevent the wipe from shedding fibers when in use, and effectively prevent agglomeration of short wood pulp fibers after the wipe has absorbed a liquid.

Claims

1. A wipe, comprising upper and lower layers of melt-blown fiber webs and an intermediate layer of a wood pulp fiber web that contains a hot-melt adhesive substance, wherein melt-blown fibers of the melt-blown fiber webs are woven into the wood pulp fiber web.

2. The wipe of claim 1, wherein the hot-melt adhesive substance is polyester fibers having a low-melting-point, ES short fibers, two-component spunbond long fibers or a blend thereof.

3. The wipe of claim 1 or 2, wherein the hot-melt adhesive substance is present in the wood pulp fiber web in an amount of 1-15 g/m.sup.2.

4. The wipe of claim 1 or 2, wherein the hot-melt adhesive substance is present in the wood pulp fiber web in an amount of 2-5 g/m.sup.2.

5. The wipe of claim 1, wherein the melt-blown fibers are polyolefin fibers, polyester fibers, polyamide fibers, polyurethane fibers, polylactic acid fibers, or a blend thereof.

6. The wipe of claim 1, wherein a weight percentage of the wood pulp fiber web in the wipe is greater than 50 wt %.

7. The wipe of claim 1, wherein a weight percentage of the wood pulp fiber web in the wipe is 65 wt %-80 wt %.

8. A manufacturing method for the wipe of claim 1, comprising steps of: (1) mixing wood pulp that has been opened and scattered by an opening roller with the hot-melt adhesive substance into a mixture, and blowing the mixture using a blowing nozzle in the presence of an auxiliary air stream to form the wood pulp fiber web containing the hot-melt adhesive substance; (2) performing a melt blowing process involving heating and melting a thermoplastic resin; dispersing melt streams of the thermoplastic resin that have been extruded from spinneret plates into fiber bundles having a diameter of ≤10 μm using a high-temperature, high-speed hot air stream, thereby forming the melt-blown fiber webs in the presence of the hot air stream; and joining the melt-blown fiber webs with two side surfaces of the wood pulp fiber web containing the hot-melt adhesive substance, so as to form a multi-layer fiber web having the melt-blown fiber webs at its two sides and having the wood pulp fiber web containing the hot-melt adhesive substance in its middle; and (3) binding the fiber webs in the multi-layer fiber web together using a heating device, so as to form the wipe having the upper and lower layers of the melt-blown fiber webs and having the intermediate layer of the wood pulp fiber web containing the hot-melt adhesive substance.

9. The manufacturing method of claim 8, wherein the hot-melt adhesive substance is polyester fibers having a low-melting-point, ES short fibers, two-component spunbond long fibers or a blend thereof.

10. The manufacturing method of claim 8, wherein the heating device is a hot air oven, a hot rolling roller or a combination thereof.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a schematic drawing illustrating manufacturing of a wipe of the present invention; and

[0020] FIG. 2 is a cross-sectional view of the wipe of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] For further illustrating the technical schemes of the present invention, the following detailed description of the present invention will be made with reference to particular embodiments

[0022] As shown in FIG. 1, the present invention discloses a manufacturing method for a wipe, comprising the following steps:

[0023] (1) mixing wood pulp 1 that has been opened and scattered by an opening roller A with a hot-melt adhesive substance 2 into a mixture, and blowing the mixture using a blowing nozzle B in the presence of an auxiliary air stream to form a wood pulp fiber web 3 containing the hot-melt adhesive substance 2. The hot-melt adhesive substance 2 may be polyester fibers having a low-melting-point, ES short fibers, two-component spunbond long fibers or a blend thereof. The blend refers to a blend of two or all of polyester fibers having a low-melting-point, ES short fibers and two-component spunbond long fibers;

[0024] (2) performing a melt blowing process involving heating and melting a thermoplastic resin; dispersing melt streams of the thermoplastic resin that have been extruded from spinneret plates C1, C2 into fiber bundles having a diameter of ≤10 μm using a high-temperature, high-speed hot air stream, thereby forming melt-blown fiber webs 4, 5 in the presence of the hot air stream; and joining the melt-blown fiber webs 4, 5 with two side surfaces of the wood pulp fiber web 3 containing the hot-melt adhesive substance 2, so as to form a multi-layer fiber web 6 having the melt-blown fiber webs 4, 5 at its two sides and having the wood pulp fiber web 3 containing the hot-melt adhesive substance 2 in its middle. The melt-blown fibers are polyolefin fibers, polyester fibers, polyamide fibers, polyurethane fibers, polylactic acid fibers, or a blend thereof. The blend refers to a blend of two, three, four or all five of polyolefin fibers, polyester fibers, polyamide fibers, polyurethane fibers, and polylactic acid fibers; and

[0025] (3) binding the fiber webs in the multi-layer fiber web 6 together using a hot air oven D and a pair of hot rolling rollers E that engage with each other, so as to form the wipe 7 having the upper and lower layers of melt-blown fiber webs 4, 5 and having the intermediate layer of the wood pulp fiber web 3 containing the hot-melt adhesive substance 2. Wherein, the melt-blown fibers of the melt-blown fiber webs 4, 5 are woven into the wood pulp fiber web 3. A weight percentage of the wood pulp fiber web 3 in the wipe 7 is greater than 50 wt %. Preferably, a weight percentage of the wood pulp fiber web 3 in the wipe 7 is 65 wt %-80 wt %.

[0026] As shown in FIG. 2, the present invention further discloses a wipe made using the foregoing manufacturing method. The wipe has a laminated structure. The wipe 7 comprises upper and lower layers of melt-blown fiber webs 4, 5 and an intermediate layer of a wood pulp fiber web 3 containing a hot-melt adhesive substance 2. Melt-blown fibers of the melt-blown fiber webs 4, 5 are woven into the wood pulp fiber web 3. The hot-melt adhesive substance is present in the wood pulp fiber web in an amount of 1-15 g/m.sup.2. Preferably, the hot-melt adhesive substance is present in the wood pulp fiber web in an amount of 2-5 g/m.sup.2. In this embodiment, the hot-melt adhesive substance is present in the wood pulp fiber web in an amount of 3 g/m.sup.2. The hot-melt adhesive substance 2 may be polyester fibers having a low-melting-point, ES short fibers, two-component spunbond long fibers or a blend thereof. The blend refers to a blend of two or all of polyester fibers having a low-melting-point, ES short fibers and two-component spunbond long fibers.

[0027] Therefore, the wipe 7 is formed by forming denser melt-blown fiber webs 4, 5 on the upper and lower layers, thereby preventing other interior fiber substances from falling out when in use, and the intermediate layer of the wood pulp fiber web 3 contains the hot-melt adhesive substance 2. In the manufacturing process, when the multi-layer fiber web 6 passes through the hot air oven and/or hot rolling rolls, the surface of the hot-melt adhesive substance 2 will begin to melt in the hot-air environment. When the hot-melt adhesive substance 2 and the fibers are in contact with each other, they will bind together to form an interwoven web structure. Thus, in a certain extent, the wood pulp short fibers of the intermediate layer are retained in the web structure, making it difficult for the wood pulp short fibers to move, so as to effectively prevent the wipe from shedding fibers when in use and to effectively prevent agglomeration of short wood pulp fibers after the wipe 7 has absorbed a liquid.