CN215650920U

CN215650920U - Disposable cleaning cloth

Info

Publication number: CN215650920U
Application number: CN202121229403.5U
Authority: CN
Inventors: 卫东·吴
Original assignee: Rubbermaid Commercial Products LLC
Current assignee: Rubbermaid Commercial Products LLC
Priority date: 2020-05-29
Filing date: 2021-05-31
Publication date: 2022-01-28
Anticipated expiration: 2031-05-31
Also published as: US20210369075A1

Abstract

The utility model relates to a disposable cleaning cloth, comprising: a lightweight base fabric having a first side and an opposite second side; and microfiber yarns sewn to said lightweight base fabric in a plurality of parallel linear rows of stitches such that said linear stitches are substantially flush with said first and second faces of said base fabric.

Description

Disposable cleaning cloth

Technical Field

The present disclosure relates generally to disposable cleaning cloths and methods of making the same, and more particularly to disposable cleaning cloths having a relatively lightweight backing fabric onto which ultra-fine fiber yarns are stitched.

Background

Disposable cleaning wipe products have recently become increasingly popular. Such wiping products typically comprise a nonwoven sheet impregnated with a cleaning and disinfecting solution. Flat or textured nonwoven sheets have been used successfully, but these must have a relatively large weight to avoid breakage during use.

Accordingly, it is desirable to provide an improved construction of a disposable cleaning wipe or cloth product.

SUMMERY OF THE UTILITY MODEL

In one aspect of the present disclosure, a disposable cleaning cloth is provided. The disposable cleaning cloth includes: a lightweight base fabric having a first side and an opposite second side; and microfiber yarns sewn to said lightweight base fabric in a plurality of parallel linear rows of stitches such that said linear stitches are substantially flush with said first and second faces of said base fabric.

In one embodiment, in the disposable cleaning cloth described above, the lightweight base cloth has 70g/m²Or lighter weight.

In one embodiment, in the disposable cleaning sheet as described above, the lightweight base fabric has about 10g/m²To about 50g/m²The weight of (c).

In one embodiment, in the disposable cleaning sheet as described above, the lightweight base fabric has about 30g/m²To about 45g/m²The weight of (c).

In one embodiment, in the disposable cleaning cloth described above, the lightweight base fabric comprises a paper or fabric construction.

In one embodiment, in the disposable cleaning cloth described above, the lightweight base fabric comprises cotton cellulose or rayon cellulose paper.

In one embodiment, in the disposable cleaning sheet as described above, the lightweight base fabric comprises a nonwoven fabric.

In one embodiment, in the disposable cleaning cloth as described above, the nonwoven fabric is needle punched.

In one embodiment, in the disposable cleaning cloth described above, the nonwoven fabric is a nonwoven polyester fiber, polypropylene, nylon, acrylic, cotton, rayon, or a blend of any of these materials.

In one embodiment, in the disposable cleaning cloth as described above, the microfiber yarn comprises microfiber of polyester, polypropylene, nylon, or a blend of any of these materials.

In one embodiment, in the disposable cleaning sheet as described above, each of the ultrafine fibers has a denier of about 0.36 to about 1.

In one embodiment, in the disposable cleaning sheet as described above, the microfiber yarn has a denier of about 100 to about 200.

In one embodiment, in the disposable cleaning cloth as described above, the microfiber yarn is formed of about 250 to about 350 microfiber filaments.

In one embodiment, in the disposable cleaning cloth as described above, the straight stitches of the microfiber yarn are present at about 150 to about 250 stitches per square inch.

In one embodiment, the disposable cleaning cloth as described above further comprises a fibrous yarn sewn to said lightweight base fabric in a plurality of parallel linear rows of stitches such that said linear stitches are substantially flush with said first and second faces of said base fabric, said fibrous yarn stitches being substantially parallel to said ultra fine fibrous yarn stitches.

Drawings

The detailed description is set forth with reference to the accompanying drawings. The use of the same reference numbers may indicate similarity to the same items. Various embodiments may utilize elements and/or components other than those shown in the figures, and some elements and/or components may not be present in various embodiments. Elements and/or components in the drawings have not necessarily been drawn to scale.

Fig. 1 is a photograph showing one embodiment of a disposable cleaning sheet according to the present disclosure.

FIG. 2 is a cross-sectional illustration of a row of straight sewing yarns according to the present disclosure.

Detailed Description

The present disclosure includes non-limiting embodiments of disposable cleaning sheets and methods for making the disposable cleaning sheets. Embodiments are described in detail herein to enable one of ordinary skill in the art to practice disposable cleaning cloths and related methods of manufacture, but it is to be understood that other embodiments may be utilized and that reasonable changes may be made without departing from the scope of the present disclosure. Throughout the disclosure, singular and plural terms may be used interchangeably, depending on the context.

Disposable cleaning cloths (also interchangeably referred to herein as "wipes") have been developed that utilize relatively lightweight base materials, as compared to commercially available textured and flat nonwoven wipes. The microfiber yarns are sewn to the lightweight base fabric in parallel linear rows of stitches in a pattern and quantity effective to provide additional structural stability to the fabric. In certain embodiments, the yarn stitches also provide a textured surface to aid in the cleaning effect of debris particles for both consumer and commercial cleaning applications. Thus, the disposable cleaning sheets described herein can be relatively lightweight while providing excellent sheet strength and cleaning ability in a disposable form.

The disposable cleaning cloths described herein can provide robust cleaning performance, high water/liquid absorbency, good dust and particle capture, 99.9% microbial removal, and/or no chemical bonding with quaternary ammonium chloride (QUAT) or chlorine bleach, as described below. Accordingly, these disposable cloths can provide improved cleaning performance levels of the disposable cloths while being formed of lightweight materials.

In particular, quaternary ammonium chlorides are often used as disinfectants with mops and cloths in medical environments (such as hospitals). However, when the microfiber is immersed in a disinfectant solution during cleaning, the disinfectant is generally absorbed by or bound to conventional microfiber (such as those contained in microfiber mops and cleaning cloths), thereby reducing the concentration of any quaternary ammonium chloride-based disinfectant used with the microfiber and reducing the disinfecting effect of the quaternary ammonium chloride-based disinfectant solution.

In some embodiments described herein, the disposable cleaning cloth is not chemically bonded to QUAT or chlorine bleach. For example, in some embodiments, the cleaning cloth does not substantially change the concentration of QUAT or chlorine bleach when immersed in and subsequently removed from a solution comprising QUAT or chlorine bleach. As used herein, cloth that does not substantially alter the strength of the QUAT or chlorine bleach refers to cloth that does not preferentially bind QUAT or chlorine bleach, or cloth that is safe and compatible with QUAT or chlorine bleach. That is, the concentration of any QUAT or chlorine bleach disinfectant solution used with the cloth will not substantially differ from the initial concentration of the liquid solution over time. For example, in some embodiments, the concentration of QUAT or chlorine bleach solution absorbed by the cloth differs from the concentration of any remaining solution by less than 5%.

Various embodiments of disposable cleaning sheets and methods of making the same are described below.

Disposable cleaning cloth

In one aspect, a disposable cleaning cloth is provided. As shown in FIG. 1, the disposable cleaning cloth 100 includes a lightweight base fabric 102 having a first side and an opposite second side, and microfibre yarns 104, the microfibre yarns 104 being sewn to the lightweight base fabric in a plurality of parallel linear rows of stitches such that the linear stitches are substantially flush with the first and second sides of the base fabric 102. As used herein, the phrase "substantially flush with the first and second sides of the base fabric" means that the straight stitches are flat or horizontally disposed along the respective surfaces of the base fabric such that when the fabric is laid flat at rest, there is no visible gap between the faces and the stitches. For example, substantially flush straight stitches are not looped or otherwise sewn to form a gap between the yarn and the base fabric. It has been found that the substantially flush, straight stitches described herein provide robust cleaning performance, including good dust and particle capture, despite being flush with the surface.

The lightweight base fabric may be any suitable lightweight base fabric and may have a density of 70g/m²Or lighter weight. In some embodiments, the lightweight base fabric has a basis weight of about 10g/m²To about 50g/m²Such as about 30g/m²To about 45g/m². As used herein, the term "about" when used in reference to a numerical value refers to an amount plus or minus 3% on the basis of the stated numerical value.

In certain embodiments, the lightweight base fabric has a paper or fabric construction that exhibits suitable fluid absorbency. For example, a lightweight base fabric may have a water absorbency of about 400% to about 800% of its weight. For example, the lightweight base fabric may be cotton cellulose or rayon cellulose paper. In other embodiments, the lightweight base fabric is a nonwoven fabric. For example, the nonwoven fabric may be formed from a suitable material, such as polyester, polypropylene, nylon, acrylic, cotton, rayon, and blends of any of these materials. For example, the nonwoven fabric may be formed via suitable nonwoven manufacturing processes such as spunbonding, needling, and hydroentanglement. In one embodiment, the lightweight base fabric is a needle-punched non-woven polyester fiber construction.

In certain embodiments, the disposable cleaning cloths described herein comprise a single nonwoven fabric or paper layer that forms a lightweight base fabric. In other embodiments, the lightweight base fabric may be formed from multiple layers.

The microfiber yarn may be formed of suitable microfibers in any suitable configuration. For example, the microfibers may have a relatively small diameter size and provide good water absorbency. For example, the ultra-fine fibers may have a size of about 0.36 to about 1 denier (such as about 0.52 denier). The microfibers may be formed of a suitable material, such as polyester fibers, polypropylene, nylon, and blends of any of these materials.

The microfiber yarn is formed of a plurality of microfibers (i.e., microfiber filaments). For example, the microfiber yarn may be formed from about 250 to about 350 microfiber filaments (such as about 275 to about 300 filaments). In certain embodiments, the microfiber yarns have a denier of about 100 to about 200.

FIG. 2 shows a cross-section of a single row of straight stitches of yarn 104 in a base fabric 102 of the disposable cleaning cloth 100. As shown, in some embodiments of the yarns, the linear stitch yarn pattern is formed by an upper yarn 104a and a lower yarn 104 b. The upper yarn 104a is sewn along a first upper surface of the base fabric 102, while the lower yarn 104b is sewn along the opposite lower surface of the base fabric. This straight stitch pattern is formed by a standard sewing machine. As described herein, both the upper and lower yarns may be microfiber yarns. In some embodiments, the upper and lower yarns may be the same. In other embodiments, the upper and lower yarns are different microfiber yarns. For example, the upper and lower yarns may have different deniers or different materials.

As described herein, the microfiber yarns 104 are stitched to the base 102 in a plurality of parallel rows of stitches. For example, the parallel rows may be straight or in other patterns, such as curved or zig-zag shapes. For example, the parallel rows may be substantially continuous across the width and length of the cleaning cloth. The stitches may be sewn at a suitable stitch density per unit area to provide the desired strength reinforcement to the base fabric and to provide the desired cleaning performance. For example, the parallel rows of stitches may be spaced apart from each other by about 0.5mm to about 5mm, such as about 1mm to about 3 mm. In certain embodiments, the straight stitches of the microfiber yarn are present at about 50 to about 500 stitches per square inch, such as about 100 to about 300 stitches per square inch, such as 150 to about 250 stitches per square inch, or about 150 to about 200 stitches per square inch (such as about 180 or 200 stitches per square inch).

In certain embodiments, as shown in fig. 1, the cleaning cloth 100 includes fibrous yarns 106, the fibrous yarns 106 being sewn to the lightweight base fabric 102 in a plurality of parallel linear rows of stitches such that the linear stitches are substantially flush with the first and second sides of the base fabric and the fibrous yarn stitches are substantially parallel to the ultra-fine fibrous yarns 104 stitches. For example, the fiber yarn may not be an ultrafine fiber yarn, but may be a yarn formed of larger filaments, such as filaments having a size greater than 1 denier. In some embodiments, 1, 2, 3, or more fiber yarns are disposed between each set of parallel linear microfiber yarn stitch rows (e.g., 2, 3, 4, 5, 6, 7, 8, 9, 10, or more rows per set). For example, the interspersed fiber yarns 106 may provide enhanced strength and stiffness to the cleaning cloth.

Manufacturing method

In another aspect, a method of manufacturing a disposable cleaning sheet 100 is provided. These methods may be used to make a cleaning cloth having any feature or any combination of features described herein. In one embodiment, the method includes providing a lightweight base fabric 102 having a first side and an opposite second side, and sewing the microfiber yarns 104 to the lightweight base fabric 102 in a plurality of parallel linear stitches such that the linear stitches are substantially flush with the first and second sides of the base fabric.

In some embodiments, sewing is performed on a multi-thread sewing machine.

In some embodiments, the method further comprises sewing the fiber yarns 106 to the lightweight base fabric 102 in a plurality of parallel linear rows of stitches such that the linear stitches are substantially flush with the first and second faces of the base fabric 102 and the stitches of the fiber yarns 106 are substantially parallel to the stitches of the ultra-fine fiber yarns 104.

Examples of the utility model

Cleaning cloth samples were made according to the present disclosure. In particular, a disposable cleaning cloth having a single layer nonwoven needle punched polyester fiber base fabric having a weight of 30g/m was manufactured²To 45g/m²In such a range that the upper and lower yarns of the polyester microfiber are sewn to the base fabric in a plurality of parallel linear rows of stitches so that the linear rows are substantially flush with the first and second sides of the base fabric. The cleaning performance and water absorption of the cloth were tested.

Specifically, in standardized testing, simulated splatter chocolate powder, milk, and cream on tile were cleaned using cloths, and the cloths were ranked based on the travel required to clean the splatter. In general, the performance of the cloth is substantially the same as that of commercially available cleaning cloths. The cloth showed an average water absorption of 640% by weight.

Thus, it has been found that lightweight, disposable cleaning cloths can be made using relatively lightweight and low cost materials, but provide high cloth strength and cleaning performance. Additionally, it has been found that the use of flat or flush stitches on the face of the base fabric, rather than protruding or looped stitches, allows for competitive cleaning performance, allowing for a reduction in the material to be used in manufacture.

While the present disclosure has been described with reference to a number of embodiments, those skilled in the art will appreciate that the present disclosure is not limited to these disclosed embodiments. Rather, the disclosure can be modified to incorporate variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the disclosure. As used herein, conventional languages such as "may", "may" or "may" are generally intended to mean that certain embodiments include, while other embodiments do not include, certain features, elements or functional capabilities, unless expressly stated otherwise, or otherwise understood in the context of usage. Additionally, while various embodiments of the disclosure have been described, it is to be understood that aspects of the disclosure may include only some of the described embodiments. Accordingly, the disclosure should not be viewed as limited by the foregoing description, but is only limited by the scope of the appended claims.

Claims

1. A disposable cleaning sheet, comprising:

a lightweight base fabric having a first side and an opposite second side; and

microfiber yarns sewn to said lightweight base fabric in a plurality of parallel linear rows of stitches such that said linear stitches are substantially flush with said first and second faces of said base fabric.

2. The disposable cleaning sheet according to claim 1, wherein said lightweight base fabric has 70g/m²Or lighter weight.

3. The disposable cleaning sheet of claim 1, wherein the lightweight base fabric has about 10g/m²To about 50g/m²The weight of (c).

4. The disposable cleaning sheet of claim 1, wherein the lightweight base fabric has about 30g/m²To about 45g/m²The weight of (c).

5. The disposable cleaning sheet according to claim 1, wherein the lightweight base fabric comprises a paper or fabric construction.

6. The disposable cleaning sheet according to claim 1, wherein the lightweight base fabric comprises cotton cellulose or rayon cellulose paper.

7. The disposable cleaning sheet according to claim 1, wherein the lightweight base fabric comprises a nonwoven fabric.

8. The disposable cleaning sheet according to claim 7, wherein the nonwoven fabric is needle punched.

9. The disposable cleaning sheet according to claim 7, wherein said nonwoven fabric is a nonwoven polyester fiber, polypropylene, nylon, acrylic, cotton, rayon, or a blend of any of these materials.

10. The disposable cleaning sheet according to claim 1, wherein said microfiber yarn comprises microfiber of polyester, polypropylene, nylon, or blends of any of these materials.

11. The disposable cleaning sheet according to claim 10, wherein each of said microfiber has a denier of about 0.36 to about 1.

12. The disposable cleaning sheet according to claim 1, wherein the microfiber yarn has a denier of about 100 to about 200.

13. The disposable cleaning sheet according to claim 1, wherein the microfiber yarn is formed of about 250 to about 350 microfiber filaments.

14. The disposable cleaning sheet according to claim 1, wherein the linear stitches of the microfiber yarn are present at about 150 to about 250 stitches per square inch.

15. The disposable cleaning sheet according to claim 1, further comprising a fiber yarn sewn to said lightweight base fabric in a plurality of parallel linear stitches such that said linear stitches are substantially flush with said first and second faces of said base fabric, said fiber yarn stitches being substantially parallel to said microfiber yarn stitches.