JP7669401B2 - Nonwoven fabric, nonwoven fabric laminate and article thereof - Google Patents

Description

The present invention relates to nonwoven fabrics, nonwoven fabric laminates, and articles made from the same, and more specifically to nonwoven fabrics, nonwoven fabric laminates, and articles made from the same that have improved bulkiness and visibility.

The final physical properties of a nonwoven fabric are determined by the method of forming and bonding the web.

When manufacturing existing spunbond nonwoven fabrics, web formation is achieved through either single-spun yarn or core-sheath composite spun yarn. The web thus formed has a simple structure without crimps and is bonded by a heated calendar to form a thin nonwoven fabric.

Thin nonwoven fabrics are used for the top sheet and back sheet in the manufacture of diapers, but they have problems with being significantly less bulky and less soft than short fiber air-through nonwoven fabrics, which are made by forming a web using carding and bonding it with hot air.

In addition, when the web is formed, crimping is not done, resulting in reduced bulkiness, and when the diaper is manufactured, a large area comes into direct contact with the baby's bottom skin, and when the nonwoven fabric is laminated, there is no space between the top sheet and the ADL (Acquisition Distribution Layer), so when the baby urinates, some urine remains on the top sheet, causing sores on the baby's bottom or inducing a rash. Another problem is that urine leaks outside the diaper.

In addition, as the market for sanitary products such as diapers becomes more luxurious, existing spunbond nonwoven fabrics have limitations in terms of enhancing bulkiness and visibility and providing a point of differentiation.

One embodiment of the present invention provides a nonwoven fabric with improved bulkiness and visibility.

Another embodiment of the present invention provides a nonwoven fabric laminate comprising two or more sheets of the nonwoven fabric.

Yet another embodiment of the present invention provides an article comprising the nonwoven fabric laminate.

One aspect of the present invention is
The sieve function value represented by the following formula 1 is 2.0 to 65.9%:
[Formula 1]
Sieve function value (%)=(final weight of powder remaining on the nonwoven fabric after sieving test)/(initial weight of powder used in sieving test)×100

The nonwoven fabric also has a sieve function value of 2.0 to 15.7%.

The nonwoven fabric also has an average hole size of 0.411 to 0.833 mm.

The nonwoven fabric also has an absorbency of 2.0 to 11.4 seconds.

The nonwoven fabric has a handle-o-meter value in the MD direction of 3.1 to 5.1 g and a handle-o-meter value in the CD direction of 1.0 to 2.3 g.

The nonwoven fabric also has a compressive strength of 3.4 to 6.4 cN.

Another aspect of the present invention is
The nonwoven fabric laminate has a layer structure of at least two layers, at least one of which is the above-mentioned nonwoven fabric.

The nonwoven fabric is a spunbond nonwoven fabric, and the nonwoven fabric laminate is configured so that the spunbond nonwoven fabric is exposed on only one of the two surface layers.

Yet another aspect of the present invention is
An article is provided that includes the nonwoven laminate.

The article may be a diaper, an absorbent product, a single-use hygiene product, a bowel movement product, a side gather, a support layer or a top sheet.

The nonwoven fabric according to one embodiment of the present invention not only has excellent bulkiness, but also has differentiated visual appeal, providing a high-end image.

Below, a nonwoven fabric according to one embodiment of the present invention will be described in detail.

The nonwoven fabric according to an embodiment of the present invention has a sieve function value of 2.0 to 65.9% as represented by the following Equation 1:
[Formula 1]
Sieve function value (%)=(final weight of powder remaining on the nonwoven fabric after sieving test)/(initial weight of powder used in sieving test)×100

If the sieve function value is between 2.0 and 65.9%, a nonwoven fabric with improved bulkiness and visibility can be obtained.

For example, the nonwoven fabric has a sieve function value of 2.0 to 15.7%. If the sieve function value is 2.0 to 15.7%, a nonwoven fabric having improved bulkiness and visibility as well as absorbency and processability can be obtained.

The nonwoven fabric also has an average hole size of 0.411 to 0.833 mm.

The nonwoven fabric also has an absorbency of 2.0 to 11.4 seconds.

The nonwoven fabric also has a handle-o-meter value in the MD direction of 3.1 to 5.1 g and a handle-o-meter value in the CD direction of 1.0 to 2.3 g.

The nonwoven fabric also has a compressive strength of 3.4 to 6.4 cN (centinewton).

The nonwoven fabric also contains crimped composite fibers (hereinafter simply referred to as "composite fibers").

The composite fiber also contains a first propylene-based polymer and a second propylene-based polymer.

The melting point of the second propylene-based polymer measured by a differential scanning calorimeter (DSC) is at least 30°C higher than the melting point of the first propylene-based polymer.

The ratio of the melt flow rate (MFR: measurement temperature 230°C, load 2.16 kg) between the first propylene-based polymer and the second propylene-based polymer measured by ASTM D1238 (the second propylene-based polymer/the first propylene-based polymer) is 1.5 or more.

For example, the melting point of the first propylene-based polymer is about 30°C to 60°C higher, or about 30°C to 100°C higher, than the melting point of the second propylene-based polymer.

For example, the melt index ratio (the second propylene-based polymer/the first propylene-based polymer) is 1.7 to 2.0, 1.7 to 3.0, or 1.7 to 4.0.

The first propylene-based polymer and the second propylene-based polymer are uniformly mixed in the cross section of the composite fiber, or are arranged so as to substantially occupy their respective regions, and are continuously extended along the longitudinal direction, and at least one component of the first propylene-based polymer and the second propylene-based polymer can continuously form at least a portion of the peripheral surface along the longitudinal direction of the composite fiber.

The first propylene-based polymer and the second propylene-based polymer are each independently a propylene homopolymer or a copolymer having propylene as a main structural unit component and one or more α-olefins having 2 to 20 carbon atoms, preferably 2 to 8 carbon atoms, such as ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, and 4-methyl-1-pentene. For example, the first propylene-based polymer and the second propylene-based polymer are each independently a propylene homopolymer or a propylene-ethylene random copolymer having an ethylene unit component content of 0 to 10 mol% and an MFR of 20 to 200 g/10 min.

In particular, the first propylene-based polymer is a propylene homopolymer, and the second propylene-based polymer is a random copolymer of propylene and a small amount of ethylene, in that a nonwoven fabric containing composite fibers having excellent bulkiness and good flexibility can be obtained, and the content of the ethylene unit component is 10 mol % or less, for example, 1 to 10 mol %. The content of the ethylene unit component is determined by a standard method using 13C-NMR spectrum.

The first propylene-based polymer further contains 1 to 5 wt % of a nucleating agent in addition to the main propylene-based polymer component, and therefore the crystallization temperature of the first propylene-based polymer is 19°C or more higher than the crystallization temperature of the second propylene-based polymer.

The melting point of the first propylene-based polymer is in the range of 120 to 175°C, and the melting point of the second propylene-based polymer is in the range of 110 to 155°C. As described above, the melting point difference between the two components is in the range of 30°C or more, 30°C to 60°C, or 30°C to 100°C.

The nonwoven fabric also contains 70 to 90 parts by weight of fibers formed by spinning the first propylene-based polymer and 10 to 30 parts by weight of fibers formed by spinning the second propylene-based polymer.

By having a hydrophilic agent impregnation amount (OPU) of 0.7% or less, the nonwoven fabric can have a rewet index of 5.0 or less and a durable water absorption rate of 10 sec or less.

The hydrophilic agent may include a wax emulsion, a reactive softener, a silicon-based compound, a surfactant, or a combination thereof. The silicon-based compound may include an amino group-containing silicon, an oxyalkylene group-containing silicon, or a combination thereof. The surfactant may be an anionic surfactant such as a carboxylate-based anionic surfactant, a sulfonate-based anionic surfactant, a sulfate ester-based anionic surfactant, or a phosphate ester-based anionic surfactant (particularly, an alkyl phosphate ester salt); a polyhydric alcohol mono fatty acid ester such as sorbitan fatty acid ester, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, or propylene glycol monostearate, N-(3-oleyloxy-2-hydroxypropyl)diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbit beeswax, or polyoxyethylene sorbitan Nonionic surfactants such as sesquistearate, polyoxyethylene monooleate, polyoxyethylene sorbitan sesquistearate, polyoxyethylene glyceryl monooleate, polyoxyethylene monostearate, polyoxyethylene monolaurate, polyoxyethylene monooleate, polyoxyethylene cetyl ether, polyoxyethylene lauryl ether; cationic surfactants such as quaternary ammonium salts, amine salts or amines; amphoteric surfactants such as aliphatic derivatives of secondary or tertiary amines, including carboxy, sulfonate, sulfate, or heterocyclic aliphatic derivatives of secondary or tertiary amines; or combinations thereof.

Specifically, the hydrophilic agent is also a non-ionic hydrophilic agent.

The nonionic hydrophilic agent may include silicon-based compounds such as amino group-containing silicon and oxyalkylene group-containing silicon; nonionic surfactants such as polyhydric alcohol mono fatty acid esters such as sorbitan fatty acid esters, diethylene glycol monostearate, diethylene glycol monooleate, glyceryl monostearate, glyceryl monooleate, and propylene glycol monostearate, N-(3-oleyloxy-2-hydroxypropyl)diethanolamine, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbitan beeswax, polyoxyethylene sorbitan sesquistearate, polyoxyethylene monooleate, polyoxyethylene sorbitan sesquistearate, polyoxyethylene glyceryl monooleate, polyoxyethylene monostearate, polyoxyethylene monolaurate, polyoxyethylene monooleate, polyoxyethylene cetyl ether, and polyoxyethylene lauryl ether; or combinations thereof.

More specifically, the nonionic hydrophilic agent also includes a surfactant having a solids content of 90% by weight or more (i.e., a nonionic surfactant).

The average diameter of the composite fiber is also 1 to 50 μm.

The first propylene-based polymer and the second propylene-based polymer can be produced using a highly stereoregular polymerization catalyst.

The highly stereoregular polymerization catalyst may include a diester component catalyst, a succinate component catalyst, a metallocene catalyst, or a combination thereof.

In addition, by including the nucleating agent in the first propylene-based polymer in addition to the propylene-based polymer component that is the main component, the crystallization temperature of the first propylene-based polymer is increased and differentiated from the crystallization temperature of the second propylene-based polymer, the thickness of the nonwoven fabric is improved due to the appearance of crimp, and the softness and bulkiness of the nonwoven fabric can be further improved.

The nucleating agent may include a granular additive, a self-assembled nucleating agent, a reactive nucleating agent, or a combination thereof. The granular additive may include sodium benzoate, titanium dioxide, silica, nanoclay, sodium salts, calcium titanate, metal oxides, metal hydroxides, or a combination thereof. The self-assembled nucleating agent may include bis(p-methylbenzylidene)sorbitol, dibenzylidene sorbitol, monobenzylidene sorbitol (MBS), bis(p-methylbenzylidene)sorbitol, derivatives thereof, or a combination thereof. The reactive nucleating agent may include metal salts, 4-biphenyl carboxylic acid, 4-biphenyl methanol, adipic acid, or a combination thereof.

The nonwoven fabric containing the composite fibers can be obtained by a normal composite melt spinning method without using any special equipment, but it can also be a spunbonded nonwoven fabric produced by the highly productive spunbonding method, for example.

Below, a method for producing a nonwoven fabric according to one embodiment of the present invention will be described in detail.

A method for producing a nonwoven fabric according to an embodiment of the present invention also includes the following steps:
(S10) melting the first propylene-based polymer and the second propylene-based polymer in an extruder at a temperature of 180° C. to 250° C. in separate sections to form a melt;
The melt is discharged through a spinneret having a single spinning nozzle (S20); and each of the discharged melts is discharged through a diffuser (S30).

The method for manufacturing the nonwoven fabric further includes a step (S40) of imparting mechanical properties to the nonwoven fabric formed in the step (S30) by an embossing process using a heated embossing roll or a method of thermal fusion by high-temperature ventilation.

For example, the embossing process may be performed under conditions where the bonding rate (i.e., embossed area rate) is 13% or less and the non-embossed unit area is 0.2 ^mm2 or more, for example, 0.2 to 0.7 ^mm2 . Here, the non-embossed unit area refers to the maximum area of a rectangle inscribed in the embossing in the smallest unit of non-embossing part surrounded on all four sides by embossed parts. By performing the embossing process under conditions within this range, a nonwoven fabric with greater bulkiness can be obtained while maintaining the necessary nonwoven fabric strength.

The bonding rate and non-embossed unit area can also be adjusted by changing the embossing pattern.

As a result of the embossing process, the nonwoven fabric includes an embossed portion and a non-embossed portion, and the embossed portion is of an open embossing type and includes a plurality of unit embossing pattern portions arranged in succession at the same or different intervals.

In addition, each embossing pattern included in the unit embossing pattern portion has an area of 0.2 to 0.7 ^mm2 .

The method for manufacturing the nonwoven fabric further includes a step (S50) of supplying the nonwoven fabric formed in step (S40) to a post-processing facility and applying a deep embossing pattern to the surface of the nonwoven fabric using a processing roll to impart a three-dimensional shape to the surface.

In step (S50), the processing roll of the post-processing equipment is also configured to impart a thickness of 0.3 mm to 0.7 mm to the nonwoven fabric by deep embossing at 10 to 50 holes/inch through hole processing. The softness and bulkiness of the final nonwoven fabric can be further improved by the post-processing in step (S50).

The composite fiber nonwoven fabric further contains a fatty acid amide having 5 to 25 carbon atoms in an amount of 0.01 to 3 wt % based on the total weight of the nonwoven fabric.

The fatty acid amide can act as a slip agent.

The fatty acid amides may include oleamide, erucamide, stearamide, or combinations thereof.

The composite fiber may contain other components, if necessary, in addition to the first propylene-based polymer and the second propylene-based polymer, to the extent that the object of the present invention is not impaired. The other components may include known heat stabilizers, weather stabilizers, various stabilizers, antistatic agents, antiblocking agents, anticlouding agents, fillers, dyes, pigments, natural oils, synthetic oils, waxes, or combinations thereof.

The stabilizer may include an anti-aging agent such as 2,6-di-t-butyl-4-methylphenol (BHT); a phenolic antioxidant such as tetrakis[methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate]methane, beta-(3,5-di-t-butyl-4-hydroxyphenyl)propionic acid alkyl ester, or 2,2'-oxamidobis[ethyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate; a fatty acid metal salt such as zinc stearate, calcium stearate, or calcium 1,2-hydroxystearate; a polyhydric alcohol fatty acid ester such as glycerin monostearate, glycerin distearate, pentaerythritol monostearate, pentaerythritol distearate, or pentaerythritol tristearate; or a combination thereof.

The filler may include silica, diatomaceous earth, alumina, titanium dioxide, magnesium oxide, stilbene powder, stilbene balloon, aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, dolomite, calcium sulfate, potassium titanate, barium sulfate, calcium sulfite, talc, clay, mica, asbestos, calcium silicate, montmorillonite, bentonite, graphite, aluminum powder, molybdenum sulfide, or a combination thereof.

The above-mentioned propylene-based polymer and the other components used as necessary can be mixed using known methods.

The composite fibers may be mono, core/sheath, side-by-side or sandwich composite fibers.

Below, a nonwoven fabric laminate according to one embodiment of the present invention will be described in detail.

The nonwoven fabric laminate according to one embodiment of the present invention is a laminate having at least two layers, at least one of which is the nonwoven fabric described above.

The nonwoven fabric laminate also includes spunbond nonwoven fabric among the nonwoven fabrics mentioned above.

For example, the nonwoven fabric of the crimped composite fiber is a spunbond nonwoven fabric, and the nonwoven fabric laminate is configured so that the spunbond nonwoven fabric is exposed on only one of the two surface layers.

The nonwoven fabric laminate may also be formed by laminating four sheets of the spunbond nonwoven fabric, in which case the nonwoven fabric laminate has a uniformity (CV%) of 3% or less. In this specification, "uniformity (CV%)" refers to the percentage obtained by cutting the nonwoven fabric laminate into 1 ^m2 pieces to make 30 test pieces, and then dividing the weight deviation of the 30 test pieces by the average weight of the test pieces.

The nonwoven fabric laminate, which is formed by stacking four sheets of the spunbond nonwoven fabric, has a thickness of 0.02 mm or more, a crimp count of 10 or more per 10 mm, a bonding rate of 13% or less, and an MD stiffness indicating the softness of the nonwoven fabric laminate of 40 mm or less. In this specification, "MD stiffness" refers to the bending deformation in the machine direction of the nonwoven fabric laminate (i.e., the degree to which the nonwoven fabric laminate is warped).

An article according to one embodiment of the present invention will be described in detail below.

An article according to one embodiment of the present invention includes the nonwoven laminate described above.

The article may be a diaper, an absorbent product, a single-use hygiene product, a bowel movement product, a side gather, a support layer or a top sheet.

When the article is a diaper, the nonwoven fabric laminate has a hydrophilic agent impregnation amount (OPU: oil pick-up) of 0.7% or less, and when applied to the top sheet layer of the diaper, the durable water absorption rate is 10 sec or less.

The hydrophilic agent pick-up (OPU) can also be calculated by the following Equation 1:
[Formula 1]
OPU (%) = (W1-W0)/W0X100
In the formula 1, W0 is the weight of the nonwoven fabric laminate not including a hydrophilic agent, and W1 is the weight of the nonwoven fabric laminate including a hydrophilic agent. In addition, in the formula 1, W1 is the total weight of the nonwoven fabric laminate not including a hydrophilic agent and the weight of only the solid component of the hydrophilic agent.

The present invention will be described in more detail below through examples. These examples are intended to more specifically explain the present invention, but the scope of the present invention is not limited to these examples.

Example 1: Production of nonwoven fabric First, 88 parts by weight of the first propylene-based polymer and 12 parts by weight of the second propylene-based polymer were melted at a temperature of 180°C to 250°C in each section using one extruder to form a melt. Then, each melt was discharged through a spinneret having a single spinning nozzle. Then, the discharged melt was discharged through a diffuser. Then, mechanical properties were imparted to the formed nonwoven fabric by embossing using a heated embossing roll. Then, as a post-processing, the formed nonwoven fabric was fed to a post-processing facility, and a three-dimensional shape was imparted to the surface of the nonwoven fabric by deep embossing using a processing roll. During the above-mentioned post-processing, the processing roll was maintained at 137°C. The processing rolls of the post-processing equipment include a first roll having a large number of pins formed thereon and a second roll having a large number of holes formed at positions corresponding to the pins of the first roll, and are configured to impart a three-dimensional shape to the surface of the nonwoven fabric by deep embossing through hole processing. The first propylene-based polymer is a propylene homopolymer (H7700 (manufactured by LG Chemical)), and the second propylene-based polymer is an elastomeric random copolymer in which ethylene is copolymerized with polypropylene (ExxonMobile Vistamaxx 7020 (ethylene unit component content: 15.0 mol%)).

Example 2: Production of nonwoven fabric A nonwoven fabric was produced in the same manner as in Example 1, except that the processing roll was maintained at 130° C. during the post-processing.

Example 3: Production of nonwoven fabric A nonwoven fabric was produced in the same manner as in Example 1, except that the processing roll was maintained at 120° C. during the post-processing.

Example 4: Production of nonwoven fabric A nonwoven fabric was produced in the same manner as in Example 1, except that the processing roll was maintained at 127°C during the post-processing.

Comparative Example 1: Production of Nonwoven Fabric A nonwoven fabric was produced in the same manner as in Example 1, except that the processing roll was maintained at 140° C. during the post-processing.

Comparative Example 2: Production of nonwoven fabric A nonwoven fabric was produced in the same manner as in Example 1, except that the processing roll was maintained at 100° C. during the post-processing.

Evaluation Example: Evaluation of Physical Properties of Nonwoven Fabrics The physical properties of each of the nonwoven fabrics produced in the above-mentioned Examples 1 to 4 and Comparative Examples 1 and 2 were evaluated by the following methods, and the results are shown in Table 1 below.

(1) Sieve function value: Measured by the following method:
1) Preparation of sample (nonwoven fabric (size: 175 mm x 150 mm)) 2) Measurement of the weight of the collector bottom 3) Place the sample between the sieve collector and the collector bottom and fix it with a rubber ring 4) Assemble the sieve collector fixed with the rubber ring, sample and the collector bottom (instrument name: AS200 Analytical Sieve Shakers (Germany)) into the instrument 5) Accurately measure 20 g of glass bead powder (manufactured by Mondi Lembacel Betheniville) on a balance and sprinkle it on the sieve collector. The particle size distribution of the glass bead powder is as follows:
Content of particles with a particle size of 0.045-0.060 mm=3.1% by weight;
Content of particles with a particle size of 0.061-0.075 mm=10.9% by weight;
Content of particles with a particle size of 0.076-0.090 mm=14.1% by weight;
Content of particles with a particle size between 0.091 and 0.105 mm = 39.9%;
Content of particles with a particle size between 0.106 and 0.120 mm = 28.1%;
The content of particles having a particle size of 0.121-0.135 mm=3.1% by weight; and the content of particles having a particle size of 0.136-0.150 mm=0.8% by weight.
6) Collector bottom is separated and its weight (= powder + collector bottom) is measured. 7) Calculate the sieve function value according to the following formula 1:
(Final weight remaining on nonwoven fabric)/20g x 100
= {20g - (weight of collector bottom after test - weight of collector bottom before test)} / 20g x 100

(2) Thickness (mm): Measured using the block cage thickness measurement method (KSK0506 method). The thickness of the nonwoven fabric is an indicator of bulkiness.

(3) Average hole size: The average major and minor axis sizes were measured in mm using an optical microscope at 25x magnification. The average size of the nonwoven holes is an indicator of visibility.

(4) Absorbance: Measured using WSP 70.3.

(5) Handle-o-meter value (g): Measured using WSP 90.3. The handle-o-meter value of a nonwoven fabric is an index of softness.

(6) Compressive strength: Measured according to JIS P 8126. The compressive strength of a nonwoven fabric is yet another indicator of softness.

In addition, the required physical properties of a nonwoven fabric that meets the objectives of the present invention are shown in Table 2 below.

Referring to Tables 1 and 2 above, it can be seen that the nonwoven fabrics produced in Examples 1 to 4 satisfy all of the required physical properties of a nonwoven fabric conforming to the objectives of the present invention, whereas the nonwoven fabrics produced in Comparative Examples 1 and 2 do not satisfy at least one of the required physical properties of a nonwoven fabric conforming to the objectives of the present invention.

The present invention has been described with reference to examples, but these are merely illustrative, and a person skilled in the art would understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention is defined by the technical ideas of the claims.

Claims (9)

A nonwoven fabric, comprising:
A plurality of holes are formed, and the sieve function value represented by the following Equation 1 is 2.0 to 65.9%,
the average size of the holes is 0.411 to 0.833 mm;
The nonwoven fabric comprises a first propylene-based polymer, and the first propylene-based polymer further comprises a nucleating agent in addition to a propylene-based polymer component as a main component, the nonwoven fabric is manufactured through an embossing process, and the embossing process has a bonding rate of 13% or less, and the nonwoven fabric has a non-embossed unit area of 0.2 mm2 ^or more and a thickness of 0.3 to 0.7 mm .
[Formula 1]
Sieve function value (%)=(final weight of powder remaining on the nonwoven fabric after sieving test)/(initial weight of powder used in sieving test)×100. The nonwoven fabric according to claim 1, wherein the sieve function value is 2.0 to 15.7%. The nonwoven fabric according to claim 1, having an absorbency of 2.0 to 11.4 sec. The nonwoven fabric according to claim 1, having a handle-o-meter value in the MD direction of 3.1 to 5.1 g and a handle-o-meter value in the CD direction of 1.0 to 2.3 g. The nonwoven fabric according to claim 1, having a compressive strength of 3.4 to 6.4 cN. A nonwoven fabric laminate having a layer structure of at least two layers, at least one of which is a nonwoven fabric according to any one of claims 1 to 5. The nonwoven fabric laminate according to claim 6, wherein the nonwoven fabric is a spunbonded nonwoven fabric, and the nonwoven fabric laminate is configured such that the spunbonded nonwoven fabric is exposed on only one of the two surface layers. An article comprising the nonwoven fabric laminate of claim 7. The article of claim 8, wherein the article is a diaper, an absorbent article, a single-use hygiene product, a bowel movement product, a side gather, a support layer, or a topsheet.