CN107444775B

CN107444775B - Dentifrice package

Info

Publication number: CN107444775B
Application number: CN201710360851.0A
Authority: CN
Inventors: 拉杰尼什·科利; 沙尚克·维什瓦纳特·波特尼斯; 苏曼·库马尔·乔普拉; 罗兰多·普拉塔; 费林; 德文德拉·恰范; 马尼沙·杰哈
Original assignee: Colgate Palmolive Co
Current assignee: Colgate Palmolive Co
Priority date: 2016-05-18
Filing date: 2017-05-16
Publication date: 2020-06-12
Anticipated expiration: 2037-05-16
Also published as: CN107444775A

Abstract

Sachet products containing dentifrice are disclosed. The dentifrice may contain potassium hydrogen peroxymonosulfate (MPS). The pouch product may be comprised of a single sheet of material that is foldable to form first and second sidewalls, and the folded single sheet of material may be sealed at first, second, and third edges of the first and second sidewalls to form a cavity containing dentifrice. The pouch product may additionally be composed of a single sheet of a multi-layer material, wherein the inner layer may be composed of a thermoplastic and the outer layer may be composed of a thermal insulator.

Description

Dentifrice package

Background

Has the formula KHSO₅The potassium hydrogen peroxymonosulfate ("MPS") compounds of (a) are useful as bleaching agents in oral care. MPS has advantages over bleaching agents that include peroxide compounds, as many peroxides are regulated in various countries. For example, some countries do not allow the use of more than 0.10% peroxide in oral care products.

Potassium hydrogen peroxymonosulfate can be used as a bleaching agent in dentifrices, and the dentifrices can be stored and/or dispensed in a package. However, MPS is highly susceptible to oxidation, and the presence of even small amounts of water, air, and/or heat can degrade MPS. Thus, improved packaging for compounds comprising MPS and the like is desired.

Disclosure of Invention

Pouch products containing a dentifrice having potassium hydrogen peroxymonosulfate (MPS) are disclosed. In one embodiment, the pouch product may be comprised of a single sheet of one or more material layers that is foldable to form a first sidewall and a second sidewall, and the folded single sheet of material may be sealed at the first edge, the second edge, and the third edge of the first sidewall and the second sidewall to form a cavity containing dentifrice.

In another embodiment, the first and second sidewalls of the pouch product can be heat sealed at the first, second, and third edges.

In another embodiment, a single sheet of material may be composed of multiple layers, with an inner layer composed of a thermoplastic such as polyethylene terephthalate, and an outer layer composed of a thermal insulator such as aluminum foil. Additionally, the multiple, secondary inner layers, which adhere the inner layer to the outer layer, may be composed of a resin, such as an ethylene-acrylic acid copolymer.

In another embodiment, the pouch product may be a single use package.

In another embodiment, the dentifrice may be formulated with a compound having the formula 2KHSO₅·KHSO₄·K2SO₄The compound of (1).

In another embodiment, the dentifrice may be made from 83.44% refined natural calcium carbonate; 0.60% saccharin sodium; 0.76% powdered sodium monofluorophosphate; 3.00% sodium lauryl sulfate (95% granules); 2.20% odorous material; and 10.00% potassium monopersulfate.

In another embodiment, the dentifrice may be composed of 83.44% calcium carbonate; 9.50% potassium peroxymonosulfate; 2.85% sodium lauryl sulfate; 2.20% odorous material; 0.73% sodium monofluorophosphate; 0.60% saccharin sodium dihydrate; 0.30% of peroxodisulfuric acid ([ (Ho) S (O)2]2o2) and potassium salt (1: 2 ratio); 0.20% tetrakis [ carbonatato (2-) ] dihydroxypentamagnesium; 0.06% sodium sulfate; 0.05% water; 0.03% sodium fluoride; 0.02% lauryl alcohol; and 0.02% sodium chloride.

Additionally, multi-layer sachet products containing the dentifrice are disclosed. In one embodiment, the multilayer pouch product may be comprised of a single sheet of multilayer material, wherein the inner layer may be comprised of a thermoplastic and the outer layer may be comprised of a thermal insulator. The single sheet of material may be folded to form the first and second sidewalls, and the folded single sheet of material may be sealed at the first, second, and third edges of the first and second sidewalls to form a cavity containing the dentifrice.

In another embodiment, the first and second sidewalls of the multi-layer pouch product can be heat sealed at the first, second, and third edges.

In another embodiment, the thermoplastic is polyethylene terephthalate and/or the thermal insulator is aluminum foil.

In another embodiment, the multiple, secondary inner layers are composed of a resin, such as an ethylene-acrylic acid copolymer, and the secondary inner layers adhere the inner layers to the outer layers.

In another embodiment, the dentifrice may include potassium hydrogen peroxymonosulfate.

Further areas of applicability of the present disclosure will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

Drawings

The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:

fig. 1 depicts a cross-sectional elevation view of a pouch product according to an embodiment.

Fig. 2 depicts a perspective side view of a pouch product according to an embodiment.

Fig. 3 depicts a cross-sectional side view of a pouch product according to an embodiment.

Fig. 4 depicts a perspective front view of a sheet prior to assembly into a pouch product, according to an embodiment.

Fig. 5 depicts a perspective side view of a roll of sheet material prior to assembly into a pouch product, according to an embodiment.

Detailed Description

The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

As used throughout, ranges are used as shorthand for describing each and every value that is within the range. Any value within the range can be selected as the terminus of the range. In addition, all references cited herein are incorporated by reference in their entirety. In the event of a conflict between a definition in the present disclosure and that of a cited reference, the present disclosure controls.

The pouch products described below may contain a dentifrice that includes, for example, potassium hydrogen peroxymonosulfate ("MPS") as the active compound. The embodiments described herein provide a solution to the problem of MPS-containing powders degrading (e.g., due to oxidation), particularly in the presence of air, moisture, heat, and/or when stored for varying periods of time (e.g., 3 months).

Although the examples below describe sachet products containing dentifrices, in some embodiments, the features and principles described below may be used with any type of compound that includes MPS or any other compound that is susceptible to oxidation or degradation when exposed to water (including moisture in the air).

In some embodiments, the dentifrice may be of the formula 2KHSO₅·KHSO₄·K2SO₄The dentifrice of (1). In other embodiments, other dentifrice compounds may be used.

In addition to preventing degradation of the stored dentifrice, pouch products have many further advantages over other stored products (e.g., cans, boxes, etc.), such as the convenience of single use packaging, the absence of the contents of the pouch product from contacting the user's hands, the absence of the contents of the pouch product being wasted, preventing under-or over-dosing of small dose contents, and the like.

Exemplary compositions of dentifrice

In some embodiments, the composition of the dentifrice may include: 83.44 percent of refined natural calcium carbonate; 0.60% saccharin sodium; 0.76% powdered sodium monofluorophosphate; 3.00% sodium lauryl sulfate (95% granules); 2.20% odorous material; and 10.00% MPS.

In other embodiments, the composition of the dentifrice may include: 83.44% calcium carbonate; 9.50% MPS; 2.85% sodium lauryl sulfate; 2.20% odorous material; 0.73% sodium monofluorophosphate; 0.60% saccharin sodium dihydrate; 0.30% of peroxodisulfuric acid ([ (Ho) S (O)2]2o2) and potassium salt (1: 2 ratio); 0.20% tetrakis [ carbonatato (2-) ] dihydroxypentamagnesium; 0.06% sodium sulfate; 0.05% water; 0.03% sodium fluoride; 0.02% lauryl alcohol; and 0.02% sodium chloride.

The above dentifrice compositions are merely examples, and in different embodiments, other dentifrice compositions using MPS or other bleaching agents may be utilized, consistent with certain disclosed embodiments.

Exemplary specifications for dentifrice

In some embodiments, the dentifrice may have one or more of the following characteristics or conditions: a moisture content of 5% or less; an active oxygen content in the range of 0.37% to 0.52%, a bulk density in the range of 0.90 to 1.20 grams per cubic centimeter (g/cc) (e.g., 1.00 g/cc); a soluble fluoride content in the range of 850 to 1,000 parts per million (ppm) (e.g., 900 ppm); a foam content of 50 milliliters (ml) or less; a pH in the range of 5.5 to 10.5 (e.g., 8); 2.50% or less particle size (retained on 75 microns); 1.00% or less particle size (retained on 150 microns); a total aerobic microbial count of 0-500 Colony Forming Units (CFU); yeast and mold content of 0-500 CFU; and a sodium lauryl sulfate content of 2.70% to 3.20% (e.g., 2.90%).

Exemplary Specifications for sachets

In some embodiments, the dentifrice may be stored in a pouch to, for example, prevent moisture, oxygen, and/or thermal degradation of the dentifrice, provide convenience of single use packaging, prevent contact between the contents of the pouch and the user's hands, prevent waste of stored dentifrice, prevent under or over dosing of stored product, and the like.

In some implementations, the pouch product can be made of a water impermeable material to prevent moisture from entering the pouch product and degrading the dentifrice. As used herein, a "water impermeable material" is a material that at least partially (preferably substantially) prevents the passage of water or other liquids through the material. In other implementations, the pouch product can be made of a gas-impermeable material that substantially prevents air, oxygen, or other gases from passing through the material of the pouch product, thus preventing the gases from contacting and degrading the dentifrice. As used herein, an "air impermeable material" is a material that at least partially (preferably substantially) prevents the passage of air, oxygen, or other gases through the material. In further implementations, the sachet product can be made resistant to high temperatures, low temperatures, and/or temperature fluctuations to prevent degradation of the dentifrice. In still further implementations, the pouch product can be made of two or more of a water impermeable material, a gas impermeable material, or a high/low/temperature resistant material.

Fig. 1 depicts a cross-sectional elevation view of a pouch product 100 according to an embodiment. The pouch product 100 may include two sidewalls on opposite sides of the pouch product 100: a first sidewall 110 and a second sidewall 210 (shown in fig. 2).

The pouch product 100 may have a single cavity 120 and the dentifrice 125 (or other contents) may be contained within the cavity 120 by the pouch product 100. In various embodiments, the dentifrice 125 may be a dentifrice that includes MPS as discussed above. In further embodiments, the pouch product may comprise two or more cavities.

In some embodiments, the pouch product 100 may be composed of a single sheet of one or more material layers (e.g., as shown in fig. 4). The single sheet may be folded to form the folded edge 140, the first sidewall 110, and the second sidewall 210, and then sealed, with the dentifrice 125 contained therein. The folded single sheet may be sealed at

edges

130, 132 and 134. For example, a heat sealer may be used to seal the folded single sheet by applying heat to the edges 130-134 of the first and

second sidewalls

110, 210 to create a water and/or air tight seal. In such embodiments, the folded single sheet may be comprised of one or more layers, at least one of which is a thermoplastic.

In some implementations, the length of the pouch product 100 (e.g., the length of the edge 132 and the folded edge 140) can be in the range of about 44.5-51.5 millimeters (mm) (e.g., 45 mm). In further implementations, the width of the pouch product 100 (e.g., the measure of the edges 130 and 134) can be in the range of about 55.5-64mm (e.g., 56.5 mm).

In some embodiments, the entirety of the cavity 120 may be filled or substantially filled with the dentifrice 125, while in other embodiments, the cavity 120 may contain oxygen, air, and/or other gases along with the dentifrice 125.

Fig. 2 depicts a perspective side view of a pouch product 100 according to an embodiment. Fig. 2 depicts the first sidewall 110 and the second sidewall 210 on opposite sides of the pouch product 100. Fig. 2 also depicts edge 130, edge 132, and folded edge 140 from a different perspective compared to fig. 1.

The pouch product 100 may have a dentifrice 125 (as shown in fig. 1) contained within the cavity 120. Accordingly, the dentifrice 125 may create a bulge of the first sidewall 110, the second sidewall 210, and the folded edge 140 as compared to the edge 132 and the edge 130, which are sealed and thus relatively flat.

Fig. 3 depicts a cross-sectional side view of a pouch product 100 according to an embodiment. In some embodiments, the pouch product 100 can be composed of a single multi-layer sheet, wherein each layer can be made of a different material. For example, as shown in fig. 3, the pouch product 100 may be comprised of four layers of material 300-330.

In some implementations, the pouch product 100 can include an inner layer 300. The inner layer 300 may be in direct contact with the dentifrice 125 and the secondary inner layer 310, and may form a barrier or wall of the cavity 120. The inner layer 300 may be, for example, a thermoplastic, such as polyethylene terephthalate (PET), which is water and air impermeable. In various embodiments, the inner layer 300 is made of a material that is impermeable to water and air in order to stabilize the dentifrice 125 and/or prevent degradation of the dentifrice 125 by contact with water and/or air. In further embodiments, other water and/or air impermeable materials may be used for the inner layer 300, consistent with the disclosed embodiments.

In further implementations, the inner layer 300 may be about 8 to 16 microns thick, for example about 12 microns thick.

In some implementations, the pouch product 100 can include a secondary inner layer 310, as shown in fig. 3. The secondary inner layer 310 may be in direct contact with the inner layer 300 and the secondary outer layer 320. The secondary inner layer 310 may be, for example, a resin such as an Ethylene Acrylic Acid (EAA) copolymer. The EAA may be used as a foil adhesive layer and/or a heat sealant. Accordingly, the secondary inner layer 310 may be used to adhere the inner layer 300 to the secondary outer layer 320. In further embodiments, other types of resins may be used as the binder, consistent with the disclosed embodiments.

In various implementations, the secondary inner layer 310 may be about 15 to 25 microns thick, for example about 20 microns thick.

In some implementations, the pouch product 100 can include a secondary outer layer 320. The secondary exterior layer 320 may be in direct contact with the secondary interior layer 320. The secondary outer layer 320 may be, for example, an insulator such as aluminum foil, which acts as a thermal insulator by reducing heat transfer. Accordingly, the secondary outer layer 310 may be resistant to high temperatures, low temperatures, and/or temperature fluctuations, and may help stabilize the dentifrice 125 and/or prevent degradation of the dentifrice 125 due to heat or cold. In further embodiments, other thermal insulators may be used for the secondary outer layer 320, consistent with the disclosed embodiments.

In various implementations, the minor outer layer 320 can be about 4 to 11 microns thick, such as about 7 microns thick.

In some implementations, the pouch product 100 can include an outer layer 330. The outer layer 330 may be in direct contact with the secondary outer layer 320. The outer layer 330 may be, for example, a resin, such as an EAA copolymer, and serves as a foil adhesive layer and/or a heat sealant. Accordingly, the outer layer 330 may be used to adhere the secondary outer layer 320 to, for example, a label that displays product indicia and/or other information. In further embodiments, other types of resins may be used as the binder, consistent with the disclosed embodiments.

In further implementations, the outer layer 330 can be about 15 to 25 microns thick, for example about 20 microns thick.

In various embodiments, the total thickness of the four layers (i.e., the thickness of sidewall 110 and/or sidewall 210) may be in the range of about 54 to 64 microns, or in the range of about 54.87 to 63.13 microns.

Fig. 4 depicts a perspective front view of a sheet 400 prior to assembly into a pouch product, according to an embodiment. As shown in fig. 4, the sheet 400 may represent a piece of material prior to assembly or formation of the pouch product 100, as shown in fig. 1-3.

In some embodiments, to assemble the pouch product 100, the sheet 400 can be folded at the edge 140 to form the sidewall 110 and the sidewall 210, and the edge 130, the edge 132, and the edge 134 can be heat sealed after folding to create the cavity 120, the cavity 120 containing the MPS-containing dentifrice 125.

In further embodiments, sheet 400 may include label layer 410 such that the exterior surfaces of sidewall 110 and sidewall 210 include printing, graphics, and the like, such as product indicia, ingredients, bar codes, directions of use, expiration dates, prices, and the like.

In some implementations, the label layer 410 can also include instructions 420 on how to open the pouch product 100. For example, the instructions 420 may be graphically depicted using a dashed line with a scissors image to indicate that the pouch product 100 may be opened by cutting off a corner of the pouch product 100.

Fig. 5 depicts a perspective side view of a roll of sheet material prior to assembly into a pouch product, according to an embodiment. The roll 500 may be comprised of one or more sheets of material (e.g., one or more of the sheets 400 shown in fig. 4). In some embodiments, the roll 500 may be used to create a plurality of pouch products. For example, the roll 500 may be inserted into a machine that unrolls the roll 500 into an unrolled sheet, cuts the unrolled sheet into multiple sheets of material, folds the sheet, adds dentifrice, and heat seals the folded sheet to create the pouch product 100, as described above.

In some implementations, the sheets of material may be arranged in the roll 500 such that the edge 130 of one sheet of material is connected to the edge 134 of a subsequent sheet of material (e.g., based on the edges shown in fig. 4). Accordingly, roll 500 may have a width of, for example, 126mm, and may be cut, for example, every 45mm, to form a plurality of sheets (e.g., to form several instances of sheet 400 as shown in fig. 4).

In other implementations, the sheets of material may be arranged in the roll 500 such that the edge 132 of one sheet of material is connected to the edge 132 of a subsequent sheet of material (e.g., based on the edges shown in fig. 4). Accordingly, roll 500 may have a width of, for example, 45mm, and may be cut, for example, every 126mm, to form a plurality of sheets (e.g., to form several instances of sheet 400 as shown in fig. 4).

In some embodiments, the roll 500 may have an outer diameter in the range of 285mm to 315mm before being unrolled and used to create an instance of the pouch product 100. In a further embodiment, the roll 500 may have a weight of 17 kilograms or less prior to use.

Example results

As shown in the table below, MPS-containing dentifrices stored in pouch products as discussed above were subject to less degradation than dentifrices stored in conventional tin can packages.

Table 1 shows exemplary results for three months for a MPS-containing dentifrice stored in a tin can and the same MPS-containing dentifrice stored in a pouch product at 25 ℃ and 60% Relative Humidity (RH). A typical theoretical value of active oxygen in a dentifrice at the initial measurement time is 0.48%. Thus, table 1 shows the percentage of active oxygen and the percentage of degradation from typical theoretical values at the initial measurement and at the 3 month measurement.

TABLE 1

25℃：60％RH	Packaging tin can	Pack-sachet
			Initial measurement	0.41% (14.60% degradation)	0.44% (8.30% degradation)
Measurement for 3 months	0.23% (52.00% degradation)	0.42% (12.50% degradation)

Table 2 shows exemplary results for three months for a MPS containing dentifrice stored in a tin can and the same MPS containing dentifrice stored in a pouch product at 40 ℃ and 75% RH. Table 2 shows the percentage of active oxygen and the percentage of degradation from typical theoretical values at the initial measurement and at the 3 month measurement.

TABLE 2

40℃：75％RH	Packaging tin can	Pack-sachet
			Initial measurement	0.41% (14.6% degradation)	0.44% (8.30% degradation)
Measurement for 3 months	0.00% (100% degradation)	0.28% (41.70% degradation)

Thus, tables 1 and 2 show a significant improvement in the active oxygen retention of dentifrices stored in pouch products.

Table 3 shows exemplary results for three months for a MPS containing dentifrice stored in a tin can and the same MPS containing dentifrice stored in a pouch product at 25 ℃ and 60% RH. Table 3 shows the amount of soluble fluoride measured in ppm in the dentifrice at the initial measurement and at 3 month measurement.

TABLE 3

25℃：60％RH	Package-tin can (ppm)	Pack-pouch (ppm)
			Initial measurement	824	797
Measurement for 3 months	793	852

Table 4 shows exemplary results for three months at 40 ℃ and 75% RH for a dentifrice containing MPS stored in a tin can and the same dentifrice with MPS stored in a pouch product. Table 4 shows the amount of soluble fluoride measured in ppm in the dentifrice at the initial measurement and at the 3 month measurement.

TABLE 4

40℃：75％RH	Package-tin can (ppm)	Pack-pouch (ppm)
			Initial measurement	824	797
Measurement for 3 months	225	669

Thus, table 4 shows a significant improvement in soluble fluoride retention of dentifrices stored in a sachet product.

Without intending to be bound by theory, it is believed that like bleach, MPS interacts with moisture and becomes unstable, which also degrades fluoride. Thus, the interaction of bleach with moisture increases the degradation of active oxygen content and soluble fluoride content.

Accordingly, the disclosed pouch products are effective to stabilize (i.e., reduce, inhibit, or retard the degradation of) the active oxygen of potassium peroxymonosulfate in the dentifrice. In addition, because stabilization of active oxygen affects the stabilization of fluoride content in the dentifrice, improved stabilization of active oxygen also improves the stabilization of fluoride content in the dentifrice.

Claims

1. A pouch product comprising:

a single sheet comprising one or more layers folded to form a first sidewall and a second sidewall; and

a cavity formed by sealing the first sidewall and the second sidewall at a first edge, a second edge, and a third edge, the cavity containing a dentifrice comprising 83.44% refined natural calcium carbonate; 0.60% saccharin sodium; 0.76% powdered sodium monofluorophosphate; 3.00% sodium lauryl sulfate (95% granules); 2.20% odorous material; and 10.00% potassium monopersulfate.

2. The pouch product according to claim 1, wherein the first and second sidewalls are heat sealed at the first, second and third edges.

3. The pouch product according to claim 1, wherein said one or more layers is a multilayer.

4. The pouch product according to claim 3, wherein the inner layer of said multiple layers comprises a thermoplastic.

5. The pouch product according to claim 4 wherein the thermoplastic comprises polyethylene terephthalate.

6. The pouch product according to claim 4, wherein the outer layer of the plurality of layers comprises thermal insulation.

7. The pouch product of claim 6, wherein the thermal insulator comprises aluminum foil.

8. The pouch product according to claim 6, wherein the multilayered, secondary inner layer comprises a resin, and wherein the secondary inner layer adheres the inner layer to the outer layer.

9. The pouch product according to claim 8, wherein the resin comprises an ethylene-acrylic acid copolymer.

10. The pouch product according to claim 1, wherein the pouch product is a single-use package.

11. A pouch product comprising:

a monolithic sheet comprising a plurality of layers folded to form a first sidewall and a second sidewall, an inner layer of the plurality of layers comprising a thermoplastic and an outer layer of the plurality of layers comprising a thermal insulator; and

a single cavity formed by sealing the first sidewall and the second sidewall at a first edge, a second edge, and a third edge, the cavity containing a dentifrice,

wherein the dentifrice comprises: 83.44% calcium carbonate; 9.50% potassium peroxymonosulfate; 2.85% sodium lauryl sulfate; 2.20% odorous material; 0.73% sodium monofluorophosphate; 0.60% saccharin sodium dihydrate; 0.30% of peroxydisulfuric acid ([ (HO) S (O))₂]₂O₂) And potassium salt (1: 2 ratio); 0.20% tetrakis [ carbonate (2-)]Dihydroxypentamagnesium; 0.06% sodium sulfate; 0.05% water; 0.03% sodium fluoride; 0.02% lauryl alcohol; and 0.02% sodium chloride.

12. The pouch product according to claim 11, wherein the first and second sidewalls are heat sealed at the first, second and third edges.

13. The pouch product according to claim 11 wherein the thermoplastic is polyethylene terephthalate.

14. The pouch product of claim 11, wherein the thermal insulator is aluminum foil.

15. The pouch product according to claim 11, wherein the multilayered, secondary inner layer comprises a resin, and wherein the secondary inner layer adheres the inner layer to the outer layer.

16. The pouch product according to claim 15, wherein the resin is an ethylene-acrylic acid copolymer.