Melt-formed container for retaining water-based contents, and method for producing said melt-formed cosmetic container

Abstract

The present invention relates to a melt-molded cosmetic container for retaining water-based contents, said melt-molded cosmetic container for retaining water-based contents for use as a storage article for water-based contents, a method for producing such a melt-molded cosmetic container for retaining water-based contents, and a melt-molded cosmetic container for retaining the water-based content obtained from the method.

Description

[0001] The present invention relates to a melt-formed cosmetic container for retaining water-based contents, the melt-formed cosmetic container for retaining water-based contents as a storage article for water-based contents, a method for producing such a melt-formed cosmetic container for retaining water-based contents, and a melt-formed cosmetic container for retaining water-based contents obtained from said method.

[0002] In a society increasingly driven by consumerism, consumers are faced with a vast array of goods, such as cosmetic products. Given the wide range of cosmetics available, it is not surprising that today's end-users possess an excess of different cosmetics, skincare, and / or hygiene products, which they use only once or occasionally. This is especially true for cosmetics purchased in bulk based on the current season, trends, or simply the consumer's current taste. Consequently, cosmetic products are often found sitting at home for extended periods, used only now, and then never used again.

[0003] If a consumer decides to use a forgotten cosmetic product, for whatever reason, the product is usually no longer in an appealing condition—that is, in the condition of a newly purchased and first-time-opened product. This also happens when a consumer has used a favorite cosmetic product for an extended period and finds that the product's condition has deteriorated. In many cases, this deterioration has already occurred before the cosmetic product's expiration date. Therefore, a product that was intact and technically safe for use (e.g., free of bacteria and mold) will inevitably deteriorate.

[0004] The main contributing factor is that cosmetic products tend to dry out in their packaging after a certain period of time, even long before the expiration date—regardless of whether the packaging has been opened multiple times, once, or never at all.

[0005] Currently, cosmetic containers are primarily made of polymers, particularly polypropylene (PP), polyethylene (PE) including LLDPE, LDPE, and HDPE, acrylonitrile styrene (AS / SAN), ethylene glycol-modified polyethylene terephthalate (PETG), or poly(ethylene terephthalate) (PET). As mentioned above, this polymer-based packaging prematurely removes the main liquid component of cosmetic products. This is especially true when the main liquid component is water. Moreover, the manufacture of virgin polymers is associated with increased environmental pollution.

[0006] Glass continues to be a popular packaging material for cosmetic products. However, it is associated with certain disadvantages, such as being heavy and fragile. For at least these reasons, glass containers are not preferred to be carried in the handbags typically used for cosmetic products.

[0007] Fluorinated materials, such as partially fluorinated or perfluorinated materials, have been used for packaging (especially bottles and containers) because they are known for their water-repellent properties. However, fluorinated materials are receiving increasing attention due to the potential health risks associated with some of these chemicals. This is particularly true when fluorinated compounds are used as packaging materials for contents intended to come into contact with humans (or other animals), as they are known to leach into said contents.

[0008] Against this backdrop, there is a demand for cosmetic containers that address the aforementioned problems. Specifically, there is a demand for lightweight yet robust cosmetic containers that excel in retaining water-based contents. Furthermore, there is a demand for environmentally friendly cosmetic containers. Additionally, there is a demand for non-hazardous cosmetic containers. There is also a demand for cosmetic containers that are safe to use, specifically in relation to a reduction in the migration of unintentionally added substances (NIAS) into the container's contents.

[0009] This need is met by the corresponding independent patent claims. Specifically, this need is met by the melt-formed cosmetic container for retaining water-based contents according to independent claim 1. Further, this need is met by the melt-formed cosmetic container used as a storage article for water-based contents according to independent claim 13. This need is further met by the method for producing the melt-formed cosmetic container for retaining water-based contents according to independent claim 14. Further, this need is met by the melt-formed cosmetic container for retaining water-based contents obtained by the method according to independent claim 15. The dependent claims describe preferred embodiments of the invention.

[0010] According to one aspect of the invention, a melt-formed cosmetic container for retaining water-based contents is provided, wherein the container comprises a polymer composition comprising recycled polyethylene terephthalate (rPET) having particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images (PPTI).

[0011] In one embodiment, the cosmetic container disclosed herein contains a cosmetic product (i.e., a cosmetic substance (mass)) as its contents. As used herein, the "cosmetic substance" or "cosmetic product" contained in the cosmetic container is also referred to as the "contents" of the container.

[0012] The term "contents" as used herein can refer to any suitable cosmetic product, i.e., a cosmetic substance. Beauty products (i.e., cosmetic substances) can include products used for hair styling (e.g., shampoos, conditioners, hair oils, hairsprays, and / or hair creams), skin care (e.g., body oils, body creams, body lotions, facial creams, facial oils, facial cleansers, eye serums, or lipsticks), cosmetics (e.g., mascara, lip gloss, or eyeliner), or nail / pedicure care (e.g., nail polish, nail oil, or nail polish remover).

[0013] Cosmetic containers can be any container suitable for containing cosmetic products (i.e., cosmetic substances) as contents. Non-limiting examples of cosmetic containers include bottles, crucibles, and / or jars.

[0014] As used herein, the term "water" preferably refers to purified water used in the cosmetics industry.

[0015] As used herein, the term "oil" refers to any oil used in the cosmetics industry. Non-limiting examples include argan oil, olive oil, rosehip oil, coconut oil, rapeseed oil, almond oil, castor oil, avocado oil, jojoba oil, tea tree oil, etc.

[0016] As used herein, the term "organic solvent" refers to any organic solvent used in the cosmetics industry. Non-limiting examples include alcohols (e.g., isopropanol, ethanol, glycerol, 1,2-hexanediol, ethylene glycol, 2-methyl-1,3-propanediol, propylene glycol), ketones (e.g., acetone), esters (e.g., butyl acetate, ethyl acetate), etc.

[0017] As used herein, the term "water-based contents" refers to contents (i.e., cosmetic products) that contain water in an amount of 40% by mass or greater, based on the total mass of the water-based contents.

[0018] As used herein, the term "oil-based contents" refers to contents (i.e., cosmetic products) that contain oil in an amount of 40% by mass or greater, based on the total mass of oil-based contents.

[0019] As used herein, the term "organic solvent-based contents" refers to contents (i.e., cosmetic products) that contain organic solvents in an amount of 40% by mass or greater, based on the total mass of the organic solvent-based contents.

[0020] As used herein, the term "retention" refers to the ability of a newly manufactured cosmetic container to at least substantially, preferably substantially, maintain the original composition of the cosmetic product during its first filling or during subsequent fillings of a reused cosmetic container.

[0021] The term "recycled polyethylene terephthalate" (rPET) is well known to those skilled in the art. Any suitable recycled polyethylene terephthalate (rPET) can be used in the polymer compositions of this disclosure, provided that it has particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images (PPTI).

[0022] The term "PPTI" refers to "particles per 10,000 images" and is well-known to those skilled in the art. It is a parameter determined by image analysis methods, such as the measurement of particles in solution (particulate matter in solution). The PPTI parameter defines the number of solid (insoluble) particles in a polymer, such as particulate contaminants insoluble in polymers (e.g., rPET). The higher the PPTI, the more solid (insoluble) microcontaminants are present in the polymer being analyzed.

[0023] In this regard, it should be noted that cosmetic containers typically include a reservoir for the cosmetic and an opening through which the cosmetic can be dispensed. The dispensing is either made directly from the container through the opening, for example via a nozzle arranged in the container for dispensing, such as a lotion like a facial cream, or indirectly via an applicator, such as a brush, which can be stored in the container for applying the cosmetic, such as an eyeliner.

[0024] According to another aspect of the invention, a melt-formed cosmetic container for retaining the water-based contents of the present disclosure is provided (which serves as a storage article for water-based contents).

[0025] According to another aspect of the present invention, a method is provided for producing a melt-molded cosmetic container for retaining the water-based contents of the present disclosure, the method comprising the following steps: a. Provide recycled polyethylene terephthalate (rPET) with particulate contaminants ranging from 1,500 to 63,000 particles per 10,000 images (PPTI); b. Optionally, rPET is mixed with at least one other type of polymer to provide an rPET-based mixture; and c. Melt-molding rPET or an rPET-based mixture to provide a melt-molded cosmetic container for retaining the water-based contents of this disclosure.

[0026] According to another aspect of the invention, a melt-formed cosmetic container for retaining water-based contents is provided, the cosmetic container being obtained by the method of the present disclosure.

[0027] The preferred embodiments of the present invention are described below: In one embodiment, the cosmetic container of this disclosure also retains organic solvent-based contents and / or oil-based contents.

[0028] The contents may be water-based, oil-based, and / or organic solvent-based. The contents are at least water-based. That is, the cosmetic containers described herein are capable of retaining at least water-based contents. Cosmetic containers may also be capable of retaining oil-based contents. Cosmetic containers may also be capable of retaining organic solvent-based contents. Water-based, oil-based, and organic solvent-based contents define the main components of the contents in the cosmetic container as being made of water, oil, and organic solvent, respectively. Therefore, the cosmetic containers described herein can be reused for another purpose; that is, a cosmetic container initially filled with oil-based contents can be subsequently reused as a cosmetic container filled with water-based contents. In this way, since cosmetic containers produced in a single batch can be used for different purposes, such as filling one cosmetic container from the same batch with body oil (typically oil-based contents) and filling another cosmetic container from the same batch with eye serum (typically water-based contents), manufacturing costs (e.g., production facilities, energy, chemical resources / materials, manpower) can be reduced.

[0029] For example, a cosmetic container capable of retaining both water-based and oil-based contents can be a single cosmetic container originally used to contain and retain water-based contents, and then reused to contain and retain oil-based contents, and vice versa.

[0030] For example, a cosmetic container capable of retaining both water-based and organic solvent-based contents can be a single cosmetic container originally used to contain and retain water-based contents, and then reused to contain and retain organic solvent-based contents, and vice versa.

[0031] Cosmetic containers containing and retaining water-based contents have water as the main phase of the contents and may also include oils and / or organic solvents that can be optionally retained. Cosmetic containers described herein may also contain oil-based contents having oil as the main phase of the contents and may also include water and / or organic solvents. In this case, the cosmetic container retains at least water and may also retain the oil-based contents and / or organic solvents. Cosmetic containers described herein may also contain and retain organic solvent-based contents having organic solvents as the main phase of the contents and may also include water and / or oils. In this case, the cosmetic container is able to retain not only the organic solvent-based contents but also at least the water included in the organic solvent-based contents, optionally further retaining the oil in the organic solvent-based contents.

[0032] For example, a facial cleanser comprises a water-based content consisting of 80% by mass water (e.g., purified water), 15% by mass organic solvent (e.g., ethanol), and 5% by mass additives (e.g., natural extracts, complexing agents, oils, and / or fragrances). In such a case, the cosmetic container is not only able to retain the water-based content but also to further retain at least one of the other ingredients, namely, the organic solvent and the oil.

[0033] For example, a facial oil comprises an oil-based content consisting of 70% by weight of oil (e.g., rosehip oil), 25% by weight of water (e.g., purified water), and 5% by weight of additives (e.g., emulsifiers, natural extracts, complexing agents, oils, and / or fragrances). In this case, the cosmetic container retains at least the water in the oil-based content and may further retain the oil-based content.

[0034] For example, a nail polish remover comprises an organic solvent-based content consisting of 80% by mass of an organic solvent (e.g., ethanol), 10% by mass of water (e.g., purified water), 5% by mass of oil (e.g., argan oil), and 5% by mass of additives (e.g., emulsifiers, natural extracts, complexing agents, oils, and / or fragrances). In such a case, the cosmetic container retains at least the water in the organic solvent-based content and may further retain the organic solvent-based content, and may further retain the oil contained therein.

[0035] In one embodiment, the water-based content is a content containing water in an amount of 55% or more, 60% or more, 65% or more, 70% or more, 75% or more, 80% or more, 85% or more, 90% or more, 95% or more, 98% or more, or 99% or more, based on the total mass of the water-based content. For example, a facial cleanser used as a water-based content may have a water content of 80% or more, based on the total mass of the facial cleanser.

[0036] In one embodiment, the oil-based content is a content containing oil in an amount of 55% or more, 60% or more, 65% or more, 70% or more, 75% or more, 80% or more, 85% or more, 90% or more, 95% or more, 98% or more, or 99% or more, based on the total mass of the oil-based content. For example, facial oil used as an oil-based content may have an oil content of 99% or more, based on the total mass of facial oil.

[0037] In one embodiment, the organic solvent-based contents are contents containing organic solvents in an amount of 55% or more, 60% or more, 65% or more, 70% or more, 75% or more, 80% or more, 85% or more, 90% or more, 95% or more, 98% or more, or 99% or more based on the total mass of the organic solvent-based contents. For example, a nail polish remover used as an organic solvent-based contents may have 85% or more of organic solvent contents based on the total mass of the nail polish remover.

[0038] In one embodiment, rPET is mechanically recycled or produced from chemically recycled monomers (produced by any known depolymerization method). In a preferred embodiment, rPET is mechanically recycled. In one embodiment, rPET is post-industrial recycled PET or post-consumer recycled PET (PCR-rPET). In a preferred embodiment, rPET is post-consumer recycled PET (PCR-rPET). In another preferred embodiment, rPET is post-consumer recycled PET (PCR-rPET) from beverage bottles such as soft drink bottles.

[0039] In one embodiment, the cosmetic container described herein has a body comprising a polymer composition comprising recycled polyethylene terephthalate (rPET) having particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images (PPTI). In other words, the cap (i.e., the lid, cap) of the cosmetic container may not contain the polymer composition disclosed herein.

[0040] As used herein, the term "body" refers to the portion of a cosmetic container that contains water-based contents. The body may have a threaded neck for attachment to a suitable nut. Needless to say, the body has a bottom wall.

[0041] In one embodiment, the cosmetic container has the body described above and further includes a polymer sheet attached to the body and disposed between the body and the water-based contents and the surface of the body. The polymer sheet preferably comprises virgin PET, more preferably composed of virgin PET. The polymer sheet can be attached to the inner surface of the body by any suitable means (e.g., by adhesive bonding). In one embodiment, the polymer sheet has a thickness less than the wall thickness of the cosmetic container body. In a preferred embodiment, the polymer sheet has a thickness 70% less than the wall thickness of the cosmetic container body, more preferably 80% less, and even more preferably 90% less. By attaching such a polymer sheet, the migration of unintentionally added substances (NIAS) from rPET into the water-based contents can be further reduced. By setting the thickness of the polymer sheet within the range mentioned above, the ability to retain the water-based contents is not reduced.

[0042] In one embodiment, the polymer composition comprises 15% or more, preferably 30% or more, 50% or more, 70% or more, 81% or more, 85% or more, 87% or more, 90% or more, 95% or more, or 100% by mass, based on the total mass of the polymer composition. By setting the amount of rPET within the ranges mentioned above, the ability to retain water-based contents can be improved.

[0043] In one embodiment, the polymer composition comprises recycled polyethylene terephthalate (rPET) in amounts ranging from 15% to 100% by mass, 30% to 100% by mass, 50% to 100% by mass, 70% to 100% by mass, 81% to 100% by mass, 85% to 100% by mass, 90% to 100% by mass, or 95% to 100% by mass, based on the total mass of the polymer composition. By setting the amount of rPET within the ranges mentioned above, the ability to retain water-based contents can be improved.

[0044] In a preferred embodiment, the polymer composition comprises recycled polyethylene terephthalate (rPET).

[0045] In one embodiment, the polymer composition further comprises at least one other type of polymer, such as polyester (which includes PET) and / or copolyester. Non-limiting examples of copolyesters are PCTG, PCTA, PETG, and / or PCT.

[0046] As used herein, the terms “polyester” and “copolyester” are not used interchangeably.

[0047] Other types of polymers are preferably virgin polymers, and more preferably virgin PET.

[0048] In one embodiment, the polymer composition comprises rPET and polyester (which comprises virgin PET). In a preferred embodiment, the polymer composition consists of rPET and virgin PET.

[0049] In one embodiment, the polymer composition comprises rPET and a virgin copolyester selected from virgin PCTG, virgin PCTA, virgin PETG, and / or virgin PCT.

[0050] Virgin polyethylene terephthalate (virgin PET) can be produced from ethylene glycol (EG) and dimethyl terephthalate (DMT), preferably from ethylene glycol and terephthalic acid (TPA).

[0051] The terms “PCTG,” “PCTA,” “PETG,” and “PCT” are well known to those skilled in the art and can be produced according to procedures known in the art. PCTG can be made from terephthalic acid (TPA), 1,4-cyclohexanediethanol (CHDM), and 1,3-propanediol (PDO). PCTA can be made from terephthalic acid (TPA), isophthalic acid (IPA), and 1,4-cyclohexanediethanol (CHDM). PETG can be made from terephthalic acid (TPA), 1,4-cyclohexanediethanol (CHDM), and ethylene glycol (EG). PCT can be made from terephthalic acid (TPA) and 1,4-cyclohexanediethanol (CHDM).

[0052] In one embodiment, the polymer composition comprises at least one other type of polymer in an amount of 85% by mass or less, preferably 70% by mass or less, 50% by mass or less, 30% by mass or less, 19% by mass or less, 15% by mass or less, 13% by mass or less, 10% by mass or less, 5% by mass or less, or 0% by mass, based on the total mass of the polymer composition. By setting the amount of the other type of polymer within the ranges mentioned above, the ability to retain water-based contents can be improved.

[0053] In one embodiment, the polymer composition comprises at least one additional type of polymer (which comprises polyester and / or copolyester) in a range of 0% to 85% by mass, 0% to 70% by mass, 0% to 50% by mass, 0% to 30% by mass, 0% to 19% by mass, 0% to 15% by mass, 0% to 10% by mass, or 0% to 5% by mass, based on the total mass of the polymer composition. By setting the amount of the additional type of polymer within the ranges mentioned above, the ability to retain water-based contents can be improved.

[0054] In one embodiment, the polymer composition does not contain any other type of polymer selected from virgin polyesters and / or virgin copolyesters. The virgin polyesters and / or virgin copolyesters are those defined above.

[0055] In one embodiment, the polymer composition does not contain a significant amount of fluorinated and / or perfluorinated compounds. In a preferred embodiment, the polymer composition does not contain a significant amount of perfluorinated compounds.

[0056] A significant amount of fluorinated and / or perfluorinated compounds means an amount of less than 1.00% by mass based on the total mass of the polymer composition. In a preferred embodiment, the polymer composition contains fluorinated and / or perfluorinated compounds in an amount of less than 0.80% by mass, more preferably less than 0.70% by mass, less than 0.60% by mass, even more preferably less than 0.50% by mass, less than 0.40% by mass, less than 0.30% by mass, less than 0.20% by mass, less than 0.10% by mass, less than 0.05% by mass, or less than 0.01% by mass based on the total mass of the polymer composition. The amount of fluorinated and / or perfluorinated compounds depends primarily on the potential contamination from the starting material used as rPET derived from virgin PET. It is also possible that rPET may be unintentionally contaminated with fluorinated and / or perfluorinated compounds during any step of the recycling process.

[0057] As used herein, the term "fluorinated compound" (i.e., partially fluorinated compound) refers to any compound containing at least one -CF bond replacing a -CH bond. The term "fluorinated compound" may further refer to "fluorinated polymer" (i.e., partially fluorinated polymer), which refers to any polymer containing at least one fluorine ion in its repeating unit.

[0058] As used herein, the term "perfluorinated compound" refers to any compound containing -CF bonds that replace -CH bonds. The term "perfluorinated compound" may further refer to "perfluorinated polymer" of any polymer in which all -CH bonds are replaced by -CF bonds in its repeating units.

[0059] In a preferred embodiment, the fluorinated and / or perfluorinated compound is a polyfluoroalkyl (PFAS) selected from PFCA, PFSA, PFPA, PFECA, PFESA, FTCA, FTSA, FTOH, FASA, FASE, FASAA and / or PFPE.

[0060] In a preferred embodiment, the fluorinated compound is a polyfluoroalkyl substance (PFAS), such as fluorotelomer carbon acid (FTCA), fluorotelomer sulfonic acid (FTSA), fluorotelomer alcohol (FTOH), perfluoroalkane sulfonamide (FASA), etc. Non-limiting examples of fluorinated compounds include poly(1,1,2,2-tetrafluorobutane-1,4-diyl) (ETFE), poly(1-fluoroethylene) (PVF), poly(1,1-difluoroethylene) (PVDF), etc.

[0061] In a preferred embodiment, the perfluorinated compound is a polyfluoroalkyl substance (PFAS), such as perfluorocarbon acid (PFCA), perfluorosulfonic acid (PFSA), perfluorophosphonic acid (PFPA), perfluoroalkylether carbon acid (PFECA), perfluoroalkylether sulfonic acid (PFESA), etc. Non-limiting examples of perfluorinated polymers are poly(1,1,2,2-tetrafluoroethylene) (PTFE), fluorinated ethylene propylene (FEP), perfluoropolyether (PFPE), perfluoroalkoxyalkane (PFA), polychlorotrifluoroethylene (PCTFE), etc.

[0062] In one embodiment, the retention of at least one water-based content and optionally further oil-based and / or organic solvent-based content can be described by the following formula (1): the weight loss of the main phase in the content is 10.00% or less. Equation (1) Where w(C) at t0 is defined as the weight w(C) of the principal phase of the contents of the cosmetic container at the first time point t0. t 0+x w(C) at point t is defined as the second time point t after t0. 0+x The weight w(C) of the principal phase of the contents in the cosmetic container. The main phase of the water-based contents is water, the main phase of the oil-based contents is oil, and the main phase of the organic solvent-based contents is organic solvent. The cosmetic containers were sealed and stored at a temperature of approximately 45°C and a pressure of approximately 1 atm for at least four (4) weeks. 0+x ).

[0063] In a preferred embodiment, the cosmetic container retains the water-based contents according to the following formula (1.1), where formula (1.1) is defined as a water-based contents loss of 10.00% or less by weight: Equation (1.1) Where w(WBC) at t0 is defined as the weight of water in the water-based contents of the cosmetic container at the first time point t0. t 0+x w(WBC) at time point t is defined as the second time point t after t0. 0+x The weight of water in the water-based contents of the cosmetic container, w(WBC).

[0064] In a preferred embodiment, the cosmetic container may also retain the oil-based contents according to the following formula (1.2), where formula (1.2) is defined as a weight loss of 10.00% or less of the oil in the oil-based contents: Equation (1.2) Where w(OBC) at t0 is defined as the weight of the oil in the oil-based contents of the cosmetic container at the first time point t0, w(OBC). t 0+x w(OBC) at point t is defined as the second time point t after t0. 0+x The weight of the oil in the oil-based contents of the cosmetic container, w(OBC).

[0065] In a preferred embodiment, the cosmetic container may also retain the organic solvent-based contents according to the following formula (1.3), where formula (1.3) is defined as a weight loss of 10.00% or less of the organic solvent in the organic solvent-based contents: Equation (1.3) Where w(OSBC) at t0 is defined as the weight w(OSBC) of the organic solvent in the organic solvent-based contents of the cosmetic container at the first time point t0. t 0+x w(OSBC) at point t is defined as the second time point t after t0. 0+x The weight w(OSBC) of the organic solvent in the organic solvent-based contents of the cosmetic container.

[0066] When cosmetic containers are sealed and stored at a temperature of 45°C and a pressure of approximately 1 atm, equations (1), (1.1), (1.2), and (1.3) define a weight loss of 10.00% or less. This may be the case for cosmetic containers that are reversibly sealed, such as those sealed by means of a screw cap. Therefore, the weight loss of the main phase (e.g., water) of the contents (e.g., water-based contents) from the orifice of the cosmetic container is negligible. This is consistent with typical consumer use of cosmetic containers, where the containers are mostly sealed during their storage period, except for their actual use.

[0067] In one implementation, where t 0+x For four (4) weeks or more, preferably six (6) weeks or more, eight (8) weeks or more, or twelve (12) weeks or more.

[0068] In the preferred embodiments, formulas (1), (1.1), (1.2), and (1.3) define a weight loss of 8.00% or less, a weight loss of 6% or less, preferably 5.00% or less, and even more preferably 4.00% or less, 3.50% or less, 3.30% or less, 3.20% or less, 3.15% or less, 3.10% or less, 3.05% or less, 3.00% or less, 2.80% or less, 2.60% or less, 2.55% or less, 2.50% or less, 2.30% or less, 2.10% or less, 2.00% or less, 1.80% or less, 1.60% or less, 1.50% or less, 1.30% or less, 1.20% or less, or 1.00% or less.

[0069] In a preferred embodiment, formulas (1), (1.1), (1.2), and (1.3) define weight loss within the range of 10.00% or less and 1.00% or more, 8.00% or less and 1.20% or more, 6.00% or less and 1.30% or more, 5.00% or less and 1.50% or more, 3.50% or less and 1.60% or more, or preferably 2.60% or less and 1.70% or more, 2.55% or less and 1.75% or more, 2.5% or less and 1.80% or more, 2.40% or less and 1.90% or more, or 2.2% or less and 2.00% or more.

[0070] In a preferred embodiment, Equation (1.1) defines the weight loss of water in water-based contents of 5.00% or less, 3.15% or less, 3.10% or less, 3.05% or less, 2.50% or less, 2.00% or less, 1.80% or less, or 1.50% or less.

[0071] In another preferred embodiment, Formula (1.1) defines the weight loss of water in water-based contents within the range of 5.00% or less and 1.50% or more, 3.50% or less and 1.60% or more, or preferably 2.60% or less and 1.70% or more, 2.55% or less and 1.75% or more, 2.5% or less and 1.80% or more, 2.40% or less and 1.90% or more, or 2.2% or less and 2.00% or more.

[0072] In a preferred embodiment, the particulate contaminants in the recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 20,000 particles per 10,000 images (PPTI). In a more preferred embodiment, the particulate contaminants in the recycled polyethylene terephthalate (rPET) fall within the range of 3,000 to 15,000 particles per 10,000 images (PPTI). In an even more preferred embodiment, the particulate contaminants in the recycled polyethylene terephthalate (rPET) fall within the range of 5,000 to 12,000 particles per 10,000 images (PPTI).

[0073] In the aforementioned cases where the particulate contaminants in recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 20,000, 3,000 to 15,000, and / or 5,000 to 12,000 particles per 10,000 images (PPTI), rPET is obtained from a single-collection system, i.e., rPET is post-consumer resin (PCR) obtained from a single-collection system. As used herein, the term "single-collection system" refers to a recycling system in which a first type of post-consumer packaging polymer (e.g., PET) is collected and recycled together with another post-consumer packaging polymer (e.g., PET) of the first type. rPET with particulate contaminants in one of the aforementioned ranges can have improved mechanical properties of cosmetic containers, such as stability. Furthermore, using rPET-PCR obtained from a single-collection system can reduce the migration of unintentionally added substances (NIAS) from rPET-PCR plastic into water-based contents.

[0074] In one embodiment, the particulate contaminants in the recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 63,000 particles per 10,000 images (PPTI), and / or 1,500 to 52,000 particles per 10,000 images (PPTI). In this case, rPET is obtained from a co-collection system, i.e., rPET is post-consumer polymer (PCR) obtained from the co-collection system. As used herein, the term "co-collection system" refers to a recycling system in which a first type of post-consumer packaging polymer (e.g., PET) is collected and recycled together with another second type of post-consumer packaging polymer (e.g., PP).

[0075] In this disclosure, rPET derived from a single collection system is preferred.

[0076] In one embodiment, the recycled polyethylene terephthalate (rPET) comprises 50 to 95% of particles having a size of 3 μm or smaller, preferably 60 to 90%, and more preferably 70 to 85%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET). If the amount of particles having a size of 3 μm or smaller is within the range mentioned above, the water retention effect of the cosmetic container can be more easily achieved. The size of the particles can be distinguished and determined by the PPTI measurement described herein.

[0077] In one embodiment, the recycled polyethylene terephthalate (rPET) comprises 70 to 100% of particles having a size of 5 μm or smaller, preferably 80 to 99%, and more preferably 90 to 99%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET). If the amount of particles having a size of 5 μm or smaller is within the range mentioned above, the water retention effect of the cosmetic container can be more easily achieved. The size of the particles can be distinguished and determined by the PPTI measurement described herein.

[0078] In one embodiment, the particulate contaminants of rPET comprise inorganic compounds, additives, and / or conjugated organic compounds. In other words, the particulate contaminants of rPET fall within the range of 1,500 to 63,000 particles per 10,000 images (PPTI), where PPTI is rPET containing inorganic compounds, additives, and / or conjugated organic compounds as particulate contaminants. The inorganic compounds, additives, and conjugated organic compounds are described below.

[0079] In one embodiment, the recycled polyethylene terephthalate (rPET) further comprises an inorganic compound.

[0080] In a preferred embodiment, the inorganic compound is present in an amount of 0.10% by mass or greater based on the total mass of the recycled polyethylene terephthalate (rPET), more preferably 0.15% by mass or greater, 0.20% by mass or greater, 0.25% by mass or greater, 0.30% by mass or greater, or 0.35% by mass or greater. The maximum amount of inorganic compound is preferably 0.50% by mass based on the total mass of the recycled polyethylene terephthalate (rPET), more preferably 0.40% by mass. If the amount of inorganic compound is within the range mentioned above, the permeability to water, oil, and / or organic solvents can be reduced, thereby making it easier to achieve a water retention effect in the cosmetic container. If the amount of inorganic compound is greater than 0.50% by mass, this can increase the likelihood of inorganic compound migrating into the water-based contents of the cosmetic container.

[0081] In one embodiment, the inorganic compound is a compound based on elements selected from Al, Sb, Cr, Fe, Cd, Ti, Ni, Ca and / or Mg.

[0082] In one embodiment, the recycled polyethylene terephthalate (rPET) further comprises an additive in an amount of 2.0% by mass or less based on the total mass of the recycled polyethylene terephthalate (rPET), preferably 0.1 to 1% by mass, 0.2 to 0.5% by mass, or 0.25 to 0.3% by mass. If the amount of additive is below the range mentioned above, the water retention effect of the cosmetic container may be reduced. If the amount of additive is above the range mentioned above, this may increase the likelihood of the additive migrating into the water-based contents of the cosmetic container. Furthermore, if the amount of additive is above the range mentioned above, this may result in lower mechanical stability (e.g., brittleness) of the cosmetic container, without being theoretically limited by the (repeated) heating of the PET containing a larger amount of additive during the recycling process.

[0083] In one embodiment, the additive is selected from polyvinyl chloride (PVC), polystyrene (PS), ethylene vinyl alcohol (EVOH), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), and / or polypropylene (PP). Such additives typically become contaminants in rPET during PET recycling processes, where they are not completely removed during sorting and recycling process steps.

[0084] In one embodiment, the recycled polyethylene terephthalate (rPET) further comprises a conjugated organic compound in an amount of 500 ppm by mass or less based on the total mass of the recycled polyethylene terephthalate (rPET), preferably 2 to 250 ppm by mass, 3 to 100 ppm by mass, 5 to 100 ppm by mass, or 5 to 50 ppm by mass. If the amount of the conjugated organic compound exceeds the ranges mentioned above, this can increase the intensity of the yellow color of the rPET.

[0085] In a preferred embodiment, the conjugated organic compound includes quinone, benzoquinone, benzophenone, stilbene, and / or biphenyl. In another preferred embodiment, the conjugated organic compound is quinone, benzoquinone, benzophenone, stilbene, and / or biphenyl.

[0086] In one embodiment, cosmetic containers include mascara containers, lip gloss containers, eyeliner containers, or pipette containers, hairspray containers, hair gel containers, lipstick containers, eye serum containers, body cream containers, body lotion containers, body oil containers, facial cream containers, or facial cleanser containers.

[0087] In one embodiment, the cosmetic container is transparent. As used herein, the term "transparent" is defined as the absence of turbidity, haze, and / or muddiness, allowing the material to be seen through during visual inspection. In one embodiment, the term "transparent" is defined as having low haze. In one embodiment, the term "transparent" is defined as having a haze value of 20% or less. In one embodiment, the term "transparent" is defined as having a haze value of 15% or less. In one embodiment, the term "transparent" is defined as having a haze value of 12% or less. In one embodiment, the term "transparent" is defined as having a haze value of 10% or less. In one embodiment, the term "transparent" is defined as having a haze value of 5% or less.

[0088] In a preferred embodiment, the cosmetic container is opaque. As used herein, the term "opaque" is defined as the presence of turbidity, haze, and / or muddiness, such that the material cannot be seen through when visually inspected. In one embodiment, the term "opaque" is defined as having high haze. In one embodiment, the term "opaque" is defined as having a haze value of 21% or higher. In one embodiment, the term "opaque" is defined as having a haze value of 30% or higher. In one embodiment, the term "opaque" is defined as having a haze value of 50% or higher. In one embodiment, the term "opaque" is defined as having a haze value of 60% or higher. In one embodiment, the term "opaque" is defined as having a haze value of 80% or higher. In one embodiment, the term "opaque" is defined as having a haze value of 95% or higher. Generally, the higher the amount of rPET in the cosmetic container, the more opaque the cosmetic container is. Therefore, increased opacity is associated with an increased ability to retain water-based contents.

[0089] In one embodiment, the water-based content is an emulsion, such as an oil-in-water emulsion, wherein the water-based content preferably contains water in an amount of 40% by mass or greater and 80% by less based on the total mass of the water-based content. In this case, the water-based content not only retains the water-based content but also further stabilizes the emulsion. This is because the cosmetic containers of this disclosure are particularly suitable for contents that require a sealed environment or otherwise become unstable, especially during storage. A non-limiting example of such unstable contents is an emulsion (water-in-oil emulsion). Typically, oil-in-water emulsions break down when the mass loss of water is 10% by mass based on the original total mass of water in the oil-in-water emulsion. The melt-molded cosmetic containers described herein can adequately retain the original water content and thus maintain the composition of the cosmetic product required for its intended use.

[0090] In one embodiment, the melt-formed cosmetic container for retaining water-based contents is also capable of retaining oil-based contents, wherein the oil-based contents are emulsions. For example, the emulsion is a water-in-oil emulsion, wherein the oil-based contents preferably contain oil in an amount of 50% by mass or greater and 80% by less, based on the total mass of the oil-based contents. In this case, the water-based contents not only retain the water-based contents but also stabilize the emulsion, as described above for water-based contents. Similarly, water-in-oil emulsions break down at a mass loss of oil of 10% by mass based on the original total mass of oil in the water-in-oil emulsion. The melt-formed cosmetic containers described herein can adequately retain the original oil content of the cosmetic product and thus maintain the composition of the cosmetic product required for its intended use.

[0091] In one embodiment, the melt-molded cosmetic container disclosed herein contains a cosmetic substance.

[0092] In one embodiment, the melt-molded cosmetic container for retaining the water-based contents of this disclosure is a water-repellent melt-molded cosmetic container. In this case, all (preferred) embodiments and features of the melt-molded cosmetic container itself for retaining water-based contents described above or in the claims are adapted to the water-repellent melt-molded cosmetic container with necessary modifications.

[0093] In this document, all (preferred) embodiments and features of the melt-formed cosmetic container itself for retaining water-based contents described above or in the claims are adapted, with necessary modifications, to the method of producing melt-formed cosmetic containers for retaining water-based contents.

[0094] In one embodiment, a method is provided for producing a melt-formed cosmetic container for retaining water-based contents, the method comprising the following steps: a. Provides recycled polyethylene terephthalate (rPET) having particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images (PPTI); and c. Melt-molding the rPET to provide a melt-molded cosmetic container for retaining water-based contents.

[0095] In one embodiment, a method is provided for producing a melt-formed cosmetic container for retaining water-based contents, the method comprising the following steps: a. Provide recycled polyethylene terephthalate (rPET) with particulate contaminants ranging from 1,500 to 63,000 particles per 10,000 images (PPTI); b. Mixing the rPET with at least one other type of polymer to provide an rPET-based mixture; and c. Melt-molding the rPET-based mixture to provide melt-molded cosmetic containers for retaining water-based contents.

[0096] Melt molding includes methods such as injection molding, extrusion molding, injection blow molding, injection stretch blow molding, and extrusion blow molding. These methods are known to those skilled in the art.

[0097] Examples of melt-molded cosmetic containers disclosed herein include injection-molded cosmetic containers, extruded cosmetic containers, injection blow-molded cosmetic containers, injection stretch blow-molded cosmetic containers, and extrusion blow-molded cosmetic containers.

[0098] In a preferred embodiment, the melt-molded cosmetic container of this disclosure is an injection blow-molded cosmetic container.

[0099] In a preferred embodiment, the melt-forming method is injection blow molding.

[0100] In one embodiment, the injection blow molding manufacturing method involves the following steps: 1) The rPET or rPET-based mixture obtained in step a. or step b. of the method described herein for producing melt-molded cosmetic containers is melted in a reciprocating screw extruder to provide molten rPET or molten rPET-based mixture; 2) Molten rPET or molten rPET-based mixture is injected into an injection mold to form a partially cooled tube (i.e., a preform) that is closed at one end; 3) Move the preform into a blow mold, the blow mold having a desired final shape around the preform and closing the blow mold around the preform; 4) Air is blown into the preform, causing the preform to stretch and expand to fill the mold; 5) Cooling the molded cosmetic containers; and 6) Eject cosmetic containers from the mold.

[0101] In one embodiment, rPET comprises PET dimer in a total amount of about 50 to about 130 mg / kg, preferably about 75 to about 125 mg / kg, more preferably about 100 to about 120 mg / kg. The amount of PET dimer within the aforementioned range is associated with reduced permeability of at least water through the cosmetic container, and thus has a beneficial effect on water retention of water-based contents.

[0102] PET dimers are non-volatile components and one of the most prevalent PET oligomers found in rPET. PET dimers can be any suitable dimer, such as dimers of the formula P2E2 with a molecular weight of 384.3 g / mol, TP2E1D1 with a molecular weight of 428.4 g / mol, and / or TP2D2 with a molecular weight of 472.5 g / mol, where P is terephthalic acid or isophthalic acid, E is ethylene glycol, TP is terephthalic acid, and D is diethylene glycol.

[0103] In a preferred embodiment, rPET comprises PET dimer in a total amount of about 50 to about 130 mg / kg, preferably about 75 to about 125 mg / kg, more preferably about 100 to about 120 mg / kg, wherein the PET dimer is selected from P2E2 with a molecular weight of 384.3 g / mol, TP2E1D1 with a molecular weight of 428.4 g / mol and / or TP2D2 with a molecular weight of 472.5 g / mol.

[0104] In one embodiment, rPET comprises PET trimer in a total amount of about 1,000 to about 5,000 mg / kg, preferably about 2,000 to about 4,500 mg / kg, more preferably about 3,000 to about 4,000 mg / kg. The amount of PET trimer within the aforementioned range is associated with a reduction in the permeability of at least water through the cosmetic container, and therefore has a beneficial effect on the retention of water-based contents.

[0105] PET trimer is a non-volatile component found in rPET and one of the most important PET oligomers. PET trimer can be a trimer with the formula TP3E3 with a molecular weight of 576.5 g / mol, where P is terephthalic acid or isophthalic acid, E is ethylene glycol, and TP is terephthalic acid.

[0106] The following embodiments further illustrate the present invention: Materials and methods: Material a) Production of cosmetic containers As recycled PET used in the production of polymer compositions, rPET is supplied by Morssinkhof-Rymoplast in the form of grey flakes. The rPET originates from post-consumer PET-A beverage bottle scrap from the EU. The PET-A scrap undergoes a recycling process including extrusion with high-vacuum degassing, melt filtration, and solid-state polycondensation (SSP). The rheological and other properties of the rPET flakes used are shown in the table below:

[0107] Polyclear® T-94 was purchased from Indorama in granular form as virgin PET for the production of polymer compositions.

[0108] b) Purchased cosmetic containers A cosmetic container in the form of a bottle is obtained, the bottle containing a polymer composition comprising rPET, the rPET having particulate contaminants falling within the range of 1,500 to 20,000 particles per 10,000 images (PPTI). Three (3) different types of bottles from the ECOTRIA® series manufactured by SK Chemicals are used: Table 1: Polymer compositions of purchased cosmetic containers [1] Cosmetic container number The amount of rPET[2] copolyester 1[3] 30% by weight 70% of quality 2[4] 50% by weight 50% by weight 3[5] 70% of quality 30% by weight [1] The amount of rPET or copolyester in mass % based on the total mass of the polymer composition consisting of rPET and copolyester. [2] rPET having microcontaminants falling within the range of 1,500 to 20,000 particles per 10,000 images (PPTI). [3] Trade name: Ecotria R100. [4] Trade name: Ecotria R101. [5] Trade name: Ecotria R102.

[0109] As a water-based content, use the materials listed in Table 2.

[0110] Table 2: Water-based contents Water content[1] K2-1.546.1 Approximately 50.2% AME07701B Approximately 47.5% AME18201B Approximately 40.2% [1] The amount of water is expressed as a percentage by mass based on the total mass of the water-based contents. The term “about” refers to a measurement inaccuracy of ±0.5%.

[0111] Measurement methods a) PPTI measurement PPTI was measured as described in [1]. Specifically, the cosmetic container described herein was cut into small pieces of approximately 1 × 1 cm. These square pieces were washed with 0.2 μm and then filtered with ethanol to remove external contaminants. They were then dried and dissolved in hexafluoroisopropanol (HFIP) at a concentration of 10 g / 100 mL. The solution was pumped through a cuvette to capture and analyze 10,000 images. The counted particles were classified into five (5) groups according to their size in μm: 0 to 3, >3 to 5, >5 to 10, >10 to 25, and >25 to 100. In addition, specific types such as transparent particles, linear types, and gel types were identified and classified by size. A sensitivity value of 45 was used as the pixel threshold for all measurements in the cosmetic container. In this paper, the total number of measured particles (PPTI) per 10,000 images is reported as a single measurement with no available standard deviation.

[0112] b) Weight loss measurement A series of cosmetic containers, such as those purchased or manufactured (see above), were cleaned with compressed air, water, and then acetone, followed by air drying. The cleaned and dried cosmetic containers were weighed empty. Each of these was then filled with approximately the same amount of water-based contents (K2-1.546.1, AME07701B, or AME18201B), weighed in the filled state, sealed with a screw cap to prevent leaks, and then placed in an incubator set at 1 atm and 45°C. After a certain period of time (at least four weeks), the containers were removed from the incubator, allowed to stand at room temperature for about 5 minutes, released by the screw cap, and then weighed again in the incubator. Each weighing test was performed seven (7) times, and the arithmetic mean was determined from these.

[0113] Production of cosmetic containers As polymer compositions, virgin PET, rPET, and rPET-based mixtures are used. The material is pre-dried at 160°C for 6 hours before being filled into the injection blow molding machine. In the case of virgin PET or rPET, the corresponding polymer is purchased from the manufacturer and filled into the injection blow molding machine. In the case of rPET-based mixtures, the purchased rPET is mixed with another polymer (e.g., virgin PET) in the container under stirring for approximately 5 minutes at a defined weight ratio. The defined weight ratios are listed in Table 3 below. The mixed polymer-rPET-based mixture is then filled into the injection blow molding machine. The total mass of the polymer composition filled into the injection blow molding machine is selected as needed based on the size of the final cosmetic container.

[0114] Table 3: Polymer composition of the manufactured cosmetic containers [1] Cosmetic container number rPET[2] Native PET 4 - 100% quality 5 50% by weight 50% by weight 6 100% quality - [1] The amount of rPET or virgin PET is expressed as a percentage by mass based on the total mass of the polymer composition consisting of rPET and copolyester. [2] The microcontaminants present are 9,532 particles per 10,000 images (PPTI).

[0115] Cosmetic containers were melt-molded using a NOVAPAX NSB 650 injection blow molding machine at an injection pressure of 90 bar and a retention pressure of 50 bar, with an average cycle time of 13.5 seconds and an 8-cavity hot runner mold. The injection barrel had six (6) temperature zones, from barrel to mold: 40°C at the hopper, 290°C, 290°C, 290°C, 290°C, and 290°C at the barrel, and 290°C at the nozzle. The injection mold hot runner was heated at 300°C (nozzle) via 10 heating zones (1 x gate, 1 x manifold, and 12 x nozzles) and at 290°C for the gate and manifold respectively. The injection mold was cooled with cold water (15°C) at the bottle bottom body and thread at corresponding flow rates of 40%, 40%, and 10%. The blow mold was cooled with cold water at 15°C. The average bottle weight was 6 grams, and the average shot weight was 48 grams. All bottles are produced under identical conditions. The preform, while still within its thermoplastic temperature range, is conveyed from the injection mold to the blow mold via a machine turntable. The bottle is blown out of the preform at 25 bar. The blow molding time consists of two stages, totaling 7 seconds.

[0116] Comparative Examples and Examples Comparative Example 1 As described in the item “Production of cosmetic containers” above (see Cosmetic Container No. 4 in Table 3), cosmetic containers containing 100% by weight of virgin PET are produced.

[0117] Examples 1 and 2 As described in the item “Production of cosmetic containers” above, cosmetic containers containing polymer compositions No. 5 (Example 1) and No. 6 (Example 2) in Table 3 were produced.

[0118] Examples 3 to 5 and Comparative Example 2: Weight Loss Results The cosmetic containers 1, 2, and 3 purchased in Table 1, the cosmetic containers produced in Examples 1 and 2, and the cosmetic container produced in Comparative Example 1 were used for the water weight loss measurement as described above. The results are summarized in Tables 4 and 5 below.

[0119] Table 4: Results of water retention properties of cosmetic containers [1] Measured after 6 weeks. [2] Measured after 4 weeks. [3] Measured after 6 weeks.

[0120] Table 5: Results of water retention properties of cosmetic containers [1] Measured after 6 weeks.

[0121] From the results in Tables 4 and 5, it can be seen that the cosmetic container of this disclosure is a melt-molded cosmetic container for retaining water-based contents. The container, comprising a polymer composition, retains various water-based contents containing different amounts of water. The polymer composition comprises recycled polyethylene terephthalate (rPET) having particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images (PPTI).

[0122] The following outlines embodiments of the invention and their preferred aspects. It should be understood that these embodiments and preferred aspects are disclosed in conjunction with any of the claims set forth herein and other features: Implementation plan: 1. A melt-formed cosmetic container for retaining water-based contents, the container comprising: A polymer composition comprising recycled polyethylene terephthalate (rPET) having particulate contaminants falling within the range of 1,500 to 63,000 particles per 10,000 images.

[0123] 2. The melt-formed cosmetic container according to embodiment 1, which is used to further retain organic solvent-based contents and / or oil-based contents.

[0124] 3. A melt-molded cosmetic container according to embodiment 1 or 2, wherein the amount of recycled polyethylene terephthalate (rPET) contained in the polymer composition is 15% by mass or more, preferably 30% by mass or more, 50% by mass or more, 70% by mass or more, 85% by mass or more, or 100% by mass based on the total mass of the polymer composition.

[0125] 4. A melt-formed cosmetic container according to any one of embodiments 1 to 3, wherein the polymer composition further comprises at least one other type of polymer, such as a polyester comprising PET and / or a copolyester comprising PCTG, PCTA, PETG and / or PCT.

[0126] 5. The melt-formed cosmetic container according to embodiment 4, wherein the polymer composition comprises at least one other type of polymer in an amount of 85% by mass or less, preferably 70% by mass or less, 50% by mass or less, 30% by mass or less, 15% by mass or less, or 0% by mass, based on the total mass of the polymer composition.

[0127] 6. A melt-formed cosmetic container according to any one of embodiments 1 to 5, wherein the polymer composition does not contain a large amount of fluorinated and / or perfluorinated polymers.

[0128] 7. A cosmetic container formed by melt molding according to any one of embodiments 1 to 6, wherein at a temperature of about 45°C and a pressure of about 1 atm, when w(WBC) at time t0 is defined as the weight w(WBC) of the water-based contents in the cosmetic container at the first time point t0, and t 0+x w(WBC) at point t is defined as the second time point t after t0. 0+x When calculating the weight w(WBC) of the water-based contents in the cosmetic container, According to formula (1.1), the weight loss of water-based contents is 5.00% or less, where formula (1.1) is... 8. The melt-formed cosmetic container according to embodiment 7, wherein formula (1) is 3.15% or less, 3.10% or less, 3.05% or less, 2.50% or less, 2.00% or less, 1.80% or less, or 1.50% or less.

[0129] 9. A cosmetic container formed by melt molding according to embodiment 7 or 8, wherein t 0+x For four (4) weeks or more, preferably six (6) weeks or more.

[0130] 10. A melt-formed cosmetic container according to any one of embodiments 1 to 9, wherein the particulate contaminants of the recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 20,000 particles per 10,000 images, preferably 3,000 to 15,000 particles per 10,000 images, and more preferably 5,000 to 12,000 particles per 10,000 images.

[0131] 11. A melt-formed cosmetic container according to any one of embodiments 1 to 10, wherein the particulate contaminants of the recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 63,000 particles per 10,000 images, and / or 1,500 to 52,000 particles per 10,000 images.

[0132] 12. A melt-formed cosmetic container according to any one of embodiments 1 to 11, wherein the recycled polyethylene terephthalate (rPET) comprises 50 to 95% of particles having a size of 3 μm or smaller, preferably 60 to 90%, and more preferably 70 to 85%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET).

[0133] 13. A melt-formed cosmetic container according to any one of embodiments 1 to 12, wherein the recycled polyethylene terephthalate (rPET) comprises 70 to 100% of particles having a size of 5 μm or smaller, preferably 80 to 99%, and more preferably 90 to 99%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET).

[0134] 14. A melt-formed cosmetic container according to any one of embodiments 1 to 13, wherein the recycled polyethylene terephthalate (rPET) further comprises an inorganic compound, preferably in an amount of 0.10% by mass or greater based on the total mass of the recycled polyethylene terephthalate (rPET).

[0135] 15. The melt-formed cosmetic container according to embodiment 14, wherein the inorganic compound is a compound based on elements selected from Al, Sb, Cr, Fe, Cd, Ti, Ni, Ca and / or Mg.

[0136] 16. A melt-formed cosmetic container according to any one of embodiments 1 to 15, wherein the recycled polyethylene terephthalate (rPET) further comprises an additive in an amount of 2.0% by mass or less based on the total mass of the recycled polyethylene terephthalate (rPET), preferably in an amount of 0.1 to 1% by mass, 0.2 to 0.5% by mass, or 0.25 to 0.3% by mass.

[0137] 17. The melt-molded cosmetic container according to embodiment 16, wherein the additive is selected from polyvinyl chloride (PVC), polystyrene (PS), ethylene vinyl alcohol (EVOH), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA) and / or polypropylene (PP).

[0138] 18. A melt-formed cosmetic container according to any one of embodiments 1 to 17, wherein the recycled polyethylene terephthalate (rPET) further comprises a conjugated organic compound in an amount of 500 ppm or less by mass based on the total mass of the recycled polyethylene terephthalate (rPET), preferably 2 to 250 ppm by mass, or 3 to 100 ppm by mass.

[0139] 19. The melt-formed cosmetic container according to embodiment 18, wherein the conjugated organic compound is selected from quinone, benzophenone, benzoquinone, stilbene, and / or biphenyl.

[0140] 20. A melt-formed cosmetic container according to any one of embodiments 1 to 19, wherein the cosmetic container includes a mascara container, a lip gloss container, an eyeliner container, a pipette container, a hairspray container, a hair gel container, a lipstick container, an eye serum container, a body cream container, a body lotion container, a body oil container, a facial cream container, or a facial cleanser container.

[0141] 21. A melt-formed cosmetic container according to any one of embodiments 1 to 20, which is used as a storage article for water-based contents.

[0142] 22. The melt-formed cosmetic container according to any one of claims 1 to 21, wherein the cosmetic container contains a cosmetic substance.

[0143] 23. A method for producing a melt-formed cosmetic container for retaining water-based contents, comprising the following steps: a. Provide recycled polyethylene terephthalate (rPET) with particulate contaminants ranging from 1,500 to 63,000 particles per 10,000 images; b. Optionally, rPET may be mixed with at least one other type of polymer to provide an rPET-based mixture; and c. Melt-molding rPET or an rPET-based mixture to provide a cosmetic container according to any one of embodiments 1 to 22.

[0144] 24. The method according to embodiment 23, wherein the rPET comprises PET dimer in a total amount of about 50 to about 130 mg / kg, preferably about 75 to about 125 mg / kg, more preferably about 100 to about 120 mg / kg.

[0145] 25. The method according to embodiment 23 or 24, wherein the rPET comprises PET trimer in a total amount of about 1,000 to about 5,000 mg / kg, preferably about 2,000 to about 4,500 mg / kg, more preferably about 3,000 to about 4,000 mg / kg.

[0146] 26. A melt-molded cosmetic container for retaining water-based contents obtained by any one of embodiments 23 to 25.

Claims

1. A melt-formed cosmetic container for retaining water-based contents, the container comprising: A polymer composition comprising recycled polyethylene terephthalate (rPET) having particulate contaminants ranging from 1,500 to 63,000 particles per 10,000 images.

2. The melt-formed cosmetic container according to claim 1, which is used to further retain organic solvent-based contents and / or oil-based contents.

3. The melt-molded cosmetic container according to claim 1 or 2, wherein the amount of recycled polyethylene terephthalate (rPET) contained in the polymer composition is 15% by mass or more, preferably 30% by mass or more, 50% by mass or more, 70% by mass or more, 85% by mass or more, or 100% by mass based on the total mass of the polymer composition.

4. The melt-molded cosmetic container according to any one of claims 1 to 3, wherein the polymer composition further comprises at least one other type of polymer, such as a polyester comprising PET and / or a copolyester comprising PCTG, PCTA, PETG and / or PCT. Preferably, the polymer composition comprises at least one other type of polymer in an amount of 85% by mass or less based on the total mass of the polymer composition, preferably 70% by mass or less, 50% by mass or less, 30% by mass or less, 15% by mass or less, or 0% by mass.

5. The melt-formed cosmetic container according to any one of claims 1 to 4, wherein the polymer composition does not contain a large amount of fluorinated and / or perfluorinated polymers.

6. The melt-formed cosmetic container according to any one of claims 1 to 5, wherein the molding is carried out at a temperature of about 45°C and a pressure of about 1 atm. w(WBC) at time t0 is defined as the weight of water in the water-based contents of the cosmetic container at the first time point t0. t 0+x w(WBC) at point t is defined as the second time point t after t0. 0+x When the weight w(WBC) of the water-based contents in the cosmetic container is given... According to formula (1.1), the weight loss of water-based contents is 5.00% or less, where formula (1.1) is... Preferably, formula (1) is 3.15% or less, 3.10% or less, 3.05% or less, 2.50% or less, 2.00% or less, 1.80% or less, or 1.50% or less, and / or Preferred among them t 0+x For four (4) weeks or more, preferably six (6) weeks or more.

7. The melt-molded cosmetic container according to any one of claims 1 to 6, wherein the particulate contaminants of the recycled polyethylene terephthalate (rPET) fall within the range of 1,500 to 20,000 particles per 10,000 images, preferably 3,000 to 15,000 particles per 10,000 images, and more preferably 5,000 to 12,000 particles per 10,000 images.

8. The melt-molded cosmetic container according to any one of claims 1 to 7, wherein the recycled polyethylene terephthalate (rPET) comprises 50 to 95% of particles having a size of 3 μm or smaller, preferably 60 to 90%, and more preferably 70 to 85%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET), and / or The recycled polyethylene terephthalate (rPET) comprises 70 to 100% of particles having a size of 5 μm or smaller, preferably 80 to 99%, and more preferably 90 to 99%, based on the total amount of particles in the recycled polyethylene terephthalate (rPET).

9. The melt-formed cosmetic container according to any one of claims 1 to 8, wherein the recycled polyethylene terephthalate (rPET) further comprises an inorganic compound, preferably in an amount of 0.10% by mass or greater based on the total mass of the recycled polyethylene terephthalate (rPET). Preferably, the inorganic compound is a compound based on elements selected from Al, Sb, Cr, Fe, Cd, Ti, Ni, Ca and / or Mg.

10. The melt-formed cosmetic container according to any one of claims 1 to 9, wherein the recycled polyethylene terephthalate (rPET) further comprises an additive in an amount of 2.0% by mass or less based on the total mass of the recycled polyethylene terephthalate (rPET), preferably in an amount of 0.1 to 1% by mass, 0.2 to 0.5% by mass, or 0.25 to 0.3% by mass. Preferably, the additive is selected from polyvinyl chloride (PVC), polystyrene (PS), ethylene vinyl alcohol (EVOH), acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), and / or polypropylene (PP).

11. The melt-formed cosmetic container according to any one of claims 1 to 10, wherein the recycled polyethylene terephthalate (rPET) further comprises a conjugated organic compound in an amount of 500 ppm or less by weight based on the total mass of the recycled polyethylene terephthalate (rPET), preferably 2 to 250 ppm by weight, or 3 to 100 ppm by weight. Preferably, the conjugated organic compound is selected from quinones, benzophenones, stilbene, and / or biphenyls.

12. A melt-formed cosmetic container according to any one of claims 1 to 11, wherein the cosmetic container includes a mascara container, a lip gloss container, an eyeliner container, a pipette container, a hairspray container, a hair gel container, a lipstick container, an eye serum container, a body cream container, a body lotion container, a body oil container, a facial cream container, or a facial cleanser container.

13. The melt-formed cosmetic container according to any one of claims 1 to 12, which is used as a storage article for water-based contents.

14. The melt-formed cosmetic container according to any one of claims 1 to 13, wherein the cosmetic container contains a cosmetic substance.

15. A method for producing a melt-formed cosmetic container for retaining water-based contents, comprising the following steps: . a. Provide recycled polyethylene terephthalate (rPET) with particulate contaminants ranging from 1,500 to 63,000 particles per 10,000 images; b. Optionally, rPET may be mixed with at least one other type of polymer to provide an rPET-based mixture; and c. Melt-molded rPET or an rPET-based mixture, thereby providing a cosmetic container according to any one of claims 1 to 14. Preferably, the rPET contains PET dimer in a total amount of about 50 to about 130 mg / kg, preferably about 75 to about 125 mg / kg, more preferably about 100 to about 120 mg / kg, and / or Preferably, the rPET contains PET trimer in a total amount of about 1,000 to about 5,000 mg / kg, preferably about 2,000 to about 4,500 mg / kg, more preferably about 3,000 to about 4,000 mg / kg.

16. A melt-formed cosmetic container for retaining water-based contents obtained from the method of claim 15.

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