Mould system

Abstract

Mould system 100 for providing a hollow moulded fibre product, the system comprising a plurality of mould parts 14a, 14b, that are moveable between: a closed arrangement, where they define a space wit

Description

TECHNICAL FIELD The present invention relates to methods and systems for manufacturing receptacles from a fibre suspension, such as a fibre suspension comprising paper pulp. The receptacles may be consumer packaging, such as bottles, jars or certain types of vases, useful for holding liquids, powders, other flowable materials, one or more solid objects, or a combination thereof. BACKGROUND It is desirable to reduce glass and plastics use in consumable items, particularly packaging. Non-necked receptacles, such as trays, bowls and other simple shapes, are commonly made from paper pulp. However, a more complex necked receptacle, like a bottle, jar or certain types of vase, is more difficult to engineer due to an internal narrowing of the receptacle between a main body portion of the receptacle and an opening of the receptacle. Various approaches are known for manufacturing receptacles from fibre suspensions. A number of such approaches involve the moulding of a hollow moulded fibre product from a fibre suspension in a mould. The hollow moulded fibre product may be further processed in order to provide a finished receptacle, or may itself serve as a finished receptacle. To maintain a suitable quality level of the finished receptacles (for example in terms of surface finish and / or strength), it is important to maintain a suitable level of cleanliness of the mould in which the hollow moulded fibre product is moulded. However, existing approaches to cleaning the mould tend to require significant downtime, which impacts the rate at which receptacles can be manufactured. SUMMARY To mitigate the issues identified above regarding maintaining mould cleanliness, while manufacturing receptacles at a suitably high rate, and / or to mitigate other issues connected with the moulding of hollow moulded fibre products, the inventors propose to utilise a mould system that comprises: a plurality of mould parts that are moveable: together, into a closed arrangement, to define a space within which the hollow moulded fibre product is mouldable, in use; and apart, into an open arrangement; and, in addition to the mould parts, one or more cleaning fluid emitters, each of which is located on one of the mould parts, and is configured such that, when the mould parts are in an open arrangement, the cleaning fluid emitter is operable to emit an outflow of cleaning fluid towards another one or more of the mould parts. By cleaning the mould parts using emitters located on the mould parts themselves, separate cleaning tools may not need to be used as frequently (for example, they might only be used daily or weekly) or may not need to be used at all. Hence, operation of the mould system may be made simpler and / or faster. Therefore, according to a first aspect of the present invention, there is provided a mould system for providing a hollow moulded fibre product, the mould system comprising: a plurality of mould parts, the mould parts being moveable: together, into a closed arrangement, to define a space within which the hollow moulded fibre product is mouldable, in use; and apart, into an open arrangement; and one or more cleaning fluid emitters, each of which: is located on one of the mould parts; and is configured such that, when the mould parts are in the open arrangement, the cleaning fluid emitter is operable to emit an outflow of cleaning fluid towards another one or more of the mould parts. The cleaning fluid emitters may remove material that could negatively impact the moulding of hollow moulded fibre products by the mould system, for example in terms of their surface finish or their ease of removal from the mould. Furthermore, as noted above, by conveniently locating the cleaning fluid emitters on the mould parts, separate cleaning tools may not need to be used as frequently (for example, they might only be used daily or weekly) or may not need to be used at all. Thus, operation of the system may be made simpler and / or faster. In some examples, at least some of the outflows from the emitters are sprays or jets. In specific examples, each outflow is a spray or a jet. In some examples, the one or more cleaning fluid emitters comprise a plurality of cleaning fluid emitters, with at least one of the plurality of cleaning fluid emitters being located on each of the plurality of mould parts. In some examples, the hollow moulded fibre product is a necked hollow moulded fibre product, such as a bottle, a jar or a type of vase. In some examples, the hollow moulded fibre product is a bottle. In some examples, the mould parts are housing parts configured to receive a plurality of mould inserts, which together define one or more internal surfaces of a mould cavity for moulding the hollow moulded fibre product when the mould parts are in the closed arrangement. In other examples, the mould parts themselves define one or more internal surfaces of a mould cavity for moulding the hollow moulded fibre product, when the mould parts are in the closed arrangement. In some examples, the one or more cleaning fluid emitters comprise a plurality of cleaning fluid emitters and the system is configured such that, during use, the plurality of cleaning fluid emitters is operated in a predetermined order. In specific examples, the predetermined order avoids collisions between the respective outflows emitted by the cleaning fluid emitters of the plurality of mould parts, for instance as would occur if the respective outflows were emitted simultaneously. In some examples, during use of the system and while the mould parts are in the open arrangement, a first of the plurality of mould parts carries out one or more cleaning movements relative to a second of the plurality of mould parts, during which at least one of the one or more cleaning fluid emitters, which is located on the first mould part, emits an outflow of cleaning fluid towards the second mould part. In certain examples, the one or more cleaning movements of the first mould part are movements relative to a support structure of the mould system and / or or relative to the local environment in which the system is installed. In addition or instead, some or all of the cleaning movements of the first mould part are reciprocating movements. In specific examples, the orientation of each cleaning fluid emitter is fixed relative to the mould part on which the cleaning fluid emitter in question is located. Such an arrangement may be simple to manufacture and / or control, particularly as compared with a system where the orientation of each cleaning fluid emitter is controllable. In such examples, the cleaning movements carried out by the mould part may apply the spray over a desired range of angles and locations to suitably remove residual material from the mould. In some examples where cleaning movements are carried out, the first mould part moves along a first path when moving from the open arrangement to the closed arrangement, and the first mould moves along at least a portion of the first path during the one or more cleaning movements. Such an arrangement may be simple to manufacture and / or control, given that components used to cause and / or control the movement of the first mould part between the open arrangement and the closed arrangement can also be used to cause and / or control the movement of the first mould part during the one or more cleaning movements. In such examples, during the one or more cleaning movements of the first mould part, at least one of the one or more cleaning fluid emitters, which is located on the second mould part, emits an outflow of cleaning fluid towards the first mould part. In some examples, the second mould part remains stationary (for example, relative to a support structure of the system and / or or relative to the local environment in which the system is installed) during the one or more cleaning movements of the first mould part (which may be, for example, movements relative to a support structure of the system and / or or relative to the local environment in which the system is installed). However, in other examples, the second mould part may carry out one or more cleaning movements (for example, relative to a support structure of the system and / or or relative to the local environment in which the system is installed) at the same time that the first mould part carries out the one or more cleaning movements. In some examples where cleaning movements are carried out, during use of the system and while the mould parts are in the closed arrangement, a mould cavity is defined within the space, and, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full width of the mould cavity of the second mould part. Alternatively or additionally, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full height of the mould cavity of the second mould part. In examples, during use of the system the outflow emitted by the at least one cleaning fluid emitter located on the second mould part similarly sweeps across a full width and / or a full height of the mould cavity of the first mould part. In some examples, at least one of the plurality of mould parts comprises first and second groups of cleaning fluid emitters, the first and second groups being operated at different times to each other. The first and second groups of cleaning fluid emitters may, for example, address different parts of the mould cavity and / or may address the mould cavity from different directions. In some examples, each of the first and the second groups of cleaning fluid emitters is a linear array of two or more cleaning fluid emitters. Additionally, or alternatively, the first and second groups may be located on opposing first and second sides of the mould part on which they are located. In specific examples, the first and second sides are lateral sides, being spaced apart horizontally. In some examples, the one or more cleaning fluid emitters comprise a first and a second cleaning fluid emitter, which are located on a first of the plurality of mould parts, the second cleaning fluid emitter being offset from the first cleaning fluid emitter in a first direction, the one or more cleaning fluid emitters of a second of the plurality of mould parts comprising a third and a fourth cleaning fluid emitter, the fourth cleaning fluid emitter being offset from the third cleaning fluid emitter in the first direction, the fourth cleaning fluid emitter being offset from the first cleaning fluid emitter in at least the first direction and the second cleaning fluid emitter being offset from the third cleaning fluid emitter in at least the first direction, and, during use of the system and while the mould parts are in the open arrangement, the first and fourth cleaning fluid emitters being operated simultaneously and, subsequently, the second and third cleaning fluid emitters being operated simultaneously. In specific examples, the first and second cleaning fluid emitters are located on opposing first and second sides of the first mould part and / or the third and fourth cleaning fluid emitters are located on opposing first and second sides of the second mould part. In specific examples, the respective first and second sides are lateral sides, being spaced apart horizontally. Hence, or otherwise, the first direction may be a horizontal direction. In examples, the first and second mould parts face each other when the plurality of mould parts is in the open arrangement. In some examples, the one or more cleaning fluid emitters comprise a first cleaning fluid emitter and a second cleaning fluid emitter, which are located on a first of the plurality of mould parts, and the first cleaning fluid emitter and the second cleaning fluid emitter are: directed outwardly from the first mould part; located on opposing first and second sides of the first mould part, respectively; and angled towards the second and first sides of the first mould part, respectively. In some examples, the first and second cleaning fluid emitters are operated at different times. In some examples, at least one of the first and second cleaning fluid emitters is directed at an angle of between about 35 degrees and about 55 degrees with respect to an offset direction, which extends from the first side to the second side of the first mould part. In specific examples the angle is between about 40 degrees and about 50 degrees. In some examples, the one or more cleaning fluid emitters comprise a third cleaning fluid emitter and a fourth cleaning fluid emitter, which are located on a second of the plurality of mould parts, wherein the third cleaning fluid emitter and the fourth cleaning fluid emitter are: directed outwardly from the second mould part; located on opposing first and second sides of the second mould part, respectively; and angled towards the second and first sides of the second mould part, respectively. In certain such examples, during use of the system and while the mould parts are in the open arrangement, the first and fourth cleaning fluid emitters are operated to emit fluid simultaneously and, subsequently, the second and third cleaning fluid emitters are operated to emit fluid simultaneously. In addition, or instead, the respective first sides of the first and second mould parts oppose each other, and the respective second sides of the first and second mould parts oppose each other. Hence (or otherwise), the first side of the first mould part is diagonally opposite the second side of the second mould part, and the second side of the first mould part is diagonally opposite the first side of the second mould part. In specific examples, the respective first and second sides are lateral sides, being spaced apart horizontally. In some examples, at least one of the third and fourth cleaning fluid emitters is directed at an angle of between about 35 degrees and about 55 degrees with respect to a second offset direction, which extends from the third side to the fourth side of the first mould part. In specific examples the angle is between about 40 degrees and about 50 degrees. In some examples, the mould system further comprises: a chamber, within which the plurality of mould parts is disposed; and at least one door, moveable between: an open configuration, in which the chamber is accessible from an exterior thereof through at least one opening in the chamber; and a closed configuration, in which the at least one opening is covered by the at least one door so as to impede cleaning fluid emitted by the cleaning fluid emitters of the plurality of mould parts from escaping from the chamber. In accordance with a second aspect of the invention there is provided a mould part for use in providing a hollow moulded fibre product, the mould part comprising: one or more cleaning fluid emitters, each of which is operable to emit an outflow of cleaning fluid outwardly from the mould part; and at least one of: a concave portion that defines part of a mould cavity when the mould part is moved into engagement with another mould part; and one or more mould insert engagement portions, which are engageable with a mould insert, the mould insert defining part of a mould cavity when the mould part and mould insert are moved into engagement with another mould part and mould insert. In accordance with a third aspect of the invention there is provided a method of providing a hollow moulded fibre product, the method comprising: moving a plurality of mould parts together, into a closed arrangement, to define a mould cavity; moulding the hollow moulded fibre product within the mould cavity; moving the mould parts apart, into an open arrangement; removing the hollow moulded fibre product from the mould cavity; and emitting a respective outflow of cleaning fluid from one or more cleaning fluid emitters, each of which is located on one of the mould parts, each outflow being directed towards another one or more of the mould parts. Emitting a respective outflow of cleaning fluid from each of the one or more cleaning fluid emitters may remove material that could negatively impact the moulding of subsequent hollow moulded fibre products, for example in terms of their surface finish or their ease of removal from the mould. Furthermore, by using emitters that are located on the mould parts, separate cleaning tools may not need to be used as frequently (for example, they might only be used daily or weekly) or may not need to be used at all. The method may thus be relatively simple to implement and / or may operate at a relatively high rate of throughput. In some examples, the one or more cleaning fluid emitters comprise a plurality of cleaning fluid emitters and the method comprises operating the plurality of cleaning fluid emitters in a predetermined order. In examples, the predetermined order avoids collisions between the respective outflows emitted by the cleaning fluid emitters that would occur if all outflows were emitted simultaneously. In some examples, the method comprises carrying out one or more cleaning movements of a first of the plurality of mould parts relative to a second of the plurality of mould parts, while the mould parts are in the open arrangement, wherein, during at least some of the one or more cleaning movements, at least one of the one or more cleaning fluid emitters, which is located on the first mould part, emits an outflow of cleaning fluid towards the second mould part. In examples, the one or more cleaning movements of the first mould part are movements relative to a support structure of the mould system and / or or relative to the local environment in which the system is installed. In addition or instead, some or all of the cleaning movements of the first mould part are reciprocating movements. In some examples, the orientation of each cleaning fluid emitter is fixed relative to the mould part on which the cleaning fluid emitter in question is located. Such an arrangement may be simpler to manufacture and / or control, particularly as compared with a system where the orientation of each cleaning fluid emitter is controllable. In examples where the orientation of each cleaning fluid emitter is fixed, the cleaning movements may apply the respective outflows from the cleaning fluid emitters over a desired range of angles and locations to suitably remove residual material from the mould cavity. In some examples where cleaning movements are carried out, the first mould part moves along a first path when moving from the open arrangement to the closed arrangement, and the first mould part moves along at least a portion of the first path during the one or more cleaning movements. Such an arrangement may be simple to implement and / or control, given that components used to cause and / or control the movement of the first mould part between the open arrangement and the closed arrangement can also be used to cause and / or control the movement of the first mould part during the one or more cleaning movements. In some examples where cleaning movements are carried out, during the one or more cleaning movements of the first mould part: the first mould part moves relative to a second of the plurality of mould parts; the at least one of the one or more cleaning fluid emitters located on the first mould part emits an outflow of cleaning fluid towards the second mould part; and at least one of the one or more cleaning fluid emitters, which is located on the second mould part, emits a respective outflow of cleaning fluid towards the first mould part. In some examples, the second mould part remains stationary (for example, relative to a support structure of the system and / or or relative to the local environment in which the system is installed) during the one or more cleaning movements of the first mould part (which may be, for example, movements relative to a support structure of the system and / or or relative to the local environment in which the system is installed). However, in other examples, the second mould part may carry out one or more cleaning movements (for example, relative to a support structure of the system and / or or relative to the local environment in which the system is installed) at the same time that the first mould part carries out the one or more cleaning movements. In some examples where cleaning movements are carried out, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full width of the mould cavity of the second mould part. Alternatively or additionally, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full height of the mould cavity of the second mould part. In examples, the outflow emitted by the at least one cleaning fluid emitter located on the second mould part similarly sweeps across a full width and / or a full height of the mould cavity of the first mould part. In some examples, at least one of the plurality of mould parts comprises first and second groups of cleaning fluid emitters, the first and second groups being operated at different times to each other. The first and second groups of cleaning fluid emitters may, for example, address different parts of the mould cavity and / or may address the mould cavity from different directions. In some examples, each of the first and the second groups of cleaning fluid emitters is a linear array of two or more cleaning fluid emitters. Additionally or alternatively, the first and second groups may be located on opposing first and second sides of the mould part on which they are located. In specific examples, the first and second sides are lateral sides, being spaced apart horizontally. In accordance with a fourth aspect of the invention, there is provided a moulding system controller configured to cause a mould system to perform the method of any one of the examples described herein. In accordance with a fifth aspect of the invention, there is provided a non-transitory storage medium storing machine-readable instructions that, when executed by a processor of a controller for a moulding system, cause the mould system to perform the method of any one of the examples described herein. In some examples of any of the above aspects, the hollow moulded fibre product is a necked hollow moulded fibre product, such as a bottle, a jar or a type of vase. In some examples of any of the above aspects, the hollow moulded fibre product is a bottle. In accordance with a sixth aspect of the invention there is provided a receptacle manufacturing line comprising the mould system of any one of the examples described herein for providing the hollow moulded fibre product, and apparatus for performing at least one additional process on the hollow moulded fibre product to provide the receptacle. The apparatus may comprise an interior coater and the at least one additional process may comprise the interior coater coating at least a portion of an interior of the product to produce an internally coated product. The apparatus may comprise a closure part applicator and the at least one additional process may comprise the closure-part applicator applying a closure part to the product or the internally coated product to produce a closable or closed product. The apparatus may comprise an exterior coater and the at least one additional process may comprise the exterior coater coating at least a portion of an exterior of the product or the internally coated product or the closable or closed product to produce an externally coated product. The apparatus may comprise a decorator and the at least one additional process may comprise the decorator decorating the product or the internally coated product or the closable or closed product or the externally coated product to produce a decorated product. The apparatus may comprise a dryer and the at least one additional process may comprise the dryer drying the product or the internally coated product or the closable or closed product or the externally coated product or the decorated product to produce a dried product. The apparatus may comprise an evaluator and the at least one additional process may comprise the evaluator evaluating the product, the internally coated product, the closable or closed product, the externally coated product, the decorated product, or the dried product to produce an evaluated product. In some examples, the receptacle is the product, the internally coated product, the closable or closed product, the externally coated product, the decorated product, the dried product, or the evaluated product. In some examples, the receptacle is a necked receptacle, such as a bottle, jar or a type of vase, and the receptacle manufacturing line is a necked-receptacle manufacturing line. In some examples, the receptacle is a bottle. In accordance with a seventh aspect there is provided a method of manufacturing a receptacle, the method comprising performing the method of providing a hollow moulded fibre product according to any one of the examples described herein to provide the hollow moulded fibre product, and then performing at least one additional process on the hollow moulded fibre product to provide the receptacle. The at least one additional process may comprise coating at least a portion of an interior of the product to produce an internally coated product. The at least one additional process may comprise applying a closure part to the product or the internally coated product to produce a closable or closed product. The at least one additional process may comprise coating at least a portion of an exterior of the product or the internally coated product or the closable or closed product to produce an externally coated product. The at least one additional process may comprise decorating the product or the internally coated product or the closable or closed product or the externally coated product to produce a decorated product. The at least one additional process may comprise drying the product or the internally coated product or the closable or closed product or the externally coated product or the decorated product to produce a dried product. The at least one additional process may comprise evaluating the product, the internally coated product, the closable or closed product, the externally coated product, the decorated product, or the dried product to produce an evaluated product. In some examples, the receptacle is the product, the internally coated product, the closable or closed product, the externally coated product, the decorated product, the dried product, or the evaluated product. In some examples, the receptacle is a necked receptacle, such as a bottle, jar or a type of vase. In some examples, the receptacle is a bottle. In accordance with an eighth aspect of the invention there is provided a method of providing a content-containing receptacle, the method comprising providing a receptacle obtained by the method of the seventh aspect and providing the contents in the receptacle to provide the content-containing receptacle. In some examples, the providing the contents in the receptacle comprises putting the contents into the receptacle. In contrast, in some examples, the providing the receptacle comprises providing the receptacle with the contents already present in the receptacle, thereby providing the contents in the receptacle. The contents may be in the form of, for example, a liquid, a powder, other flowable materials, one or more solid objects, or a combination thereof. For example, the contents may be a foodstuff such as a condiment, a beverage such as an alcoholic beverage, a household care product such as a detergent or other cleaning product, a personal care product such as a hair care product or a personal cleansing product or a healthcare product or a pharmaceutical product or a cosmetics product, a fragrance product such as a perfume, a vehicle product such as motor oil, or an industrial product. Other suitable contents will be apparent to the skilled reader in view of the content of this application and their common general knowledge. In some examples, the receptacle is a necked receptacle, such as a bottle, ajar or a type of vase. In some examples, the receptacle is a bottle. In some examples, the method comprises: closing an opening of the receptacle after the providing contents in the receptacle, and / or applying a label or indicia to the receptacle. In some examples, the closing comprises applying a closure (such as a lid or a cap or a heat seal) to the receptacle to close the opening. In some examples, the closing comprises applying a heat seal to the receptacle and (e.g., thereafter) applying a lid or a cap to the receptacle. In some examples, the applying the label or indicia to the receptacle occurs after the providing the contents in the receptacle (that is, the label or indicia is applied to the content-containing receptacle). In other examples, the applying the label or indicia to the receptacle occurs before or during the providing the contents in the receptacle. In some examples, the applying occurs before the closing. In some examples, the applying occurs after the closing. In some examples, the applying occurs during the closing. In accordance with a ninth aspect of the invention there is provided use of a receptacle obtained by the method of the seventh aspect to contain contents. The use could be, for example, by a person (such as a natural person or a company) who puts the contents into the receptacle, or by a person who transports the contents, or by a person who wishes to dispose of (e.g., to a consumer or end user), offer to dispose of (e.g., to a consumer or end user), import, or keep the contents whether for disposal or otherwise. The contents may, for example, be in the form of any of those discussed above. In some examples, the receptacle is a necked receptacle, such as a bottle, ajar or a type of vase. In some examples, the receptacle is a bottle. It will be appreciated that optional features of aspects of the present invention may be equally applied to other aspects of the present invention, where appropriate. BRIEF DESCRIPTION OF DRAWINGS Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a schematic view of an example receptacle manufacturing line for performing a method of manufacturing receptacles from paper pulp; Figures 2A, 2B, 2C and 2D are, respectively, a front view of a mould part for an example mould system according to an example, a sectional view of the mould part, a top view of the mould system in a closed arrangement, and a sectional view of the mould system in the closed arrangement; Figures 3A-3I are top views of the mould system of Figures 2A-2D, taken at respective, different points in time, during the opening and cleaning of the mould system; Figures 4A and 4B are sectional views that show further details of the mould system of Figures 2A-3I, including a chamber in which the mould parts are located; Figure 5 is a schematic diagram that shows further details of the mould system of Figures 2A-4B; Figure 6 is a flow diagram that illustrates an example of a method of providing a hollow moulded fibre product according to an example; Figure 7 shows a non-transitory computer-readable storage medium according to an example; Figure 8 shows a schematic cross-sectional view of a receptacle containing contents, according to an example; and Figure 9 shows a method of providing a content-containing receptacle. The following description presents exemplary embodiments and, together with the drawings, serves to explain principles of embodiments of the invention. Figure 1 shows a receptacle manufacturing line for performing a method of manufacturing receptacles, in this case necked receptacles, and more specifically in this case in the form of bottles, from paper pulp (i.e., which can form the basis of an example fibre suspension). By “necked receptacle” it is meant that the receptacle has an internal narrowing, or “neck”, between a main body portion, in which most of or all the contents of the receptacle are stored in use, and an opening through which the contents can enter or leave the receptacle in use. The internal width of the receptacle at the neck may be the same as or different to the internal width of the opening. However, the internal width of the neck is smaller than that of the main body portion, so that a shoulder is defined by and between the neck and the main body portion. This shoulder complicates manufacture of the receptacle, since it interferes with subsequent removal (and, in some cases, insertion) of whatever mould tool is inserted into the receptacle to form the internal shape of the receptacle. Examples of necked receptacles are bottles, jars, and certain types of vases. The process is merely exemplary and is provided to give context to examples of the present invention. It will be appreciated that, in other examples, the receptacle manufacturing line could be for making non-necked receptacles (i.e., receptacles without such a neck), such as bowls or trays. Broadly speaking, the exemplary process comprises providing a fibre suspension, introducing the fibre suspension into a mould cavity of a porous first mould and expelling a liquid (such as water) from the fibre suspension to produce a hollow moulded fibre product (which may be called a wet precursor or embryo) in the mould cavity, further moulding the hollow moulded fibre product to produce a hollow further-moulded fibre product, drying and then internally-coating the hollow further-moulded fibre product to produce an internally coated product, drying the internally coated product to produce a dried product, applying a closure part to the dried product to produce a closable or closed product, externally-coating and / or decorating the closable or closed product to produce an externally coated and / or decorated product, and then drying the externally coated or decorated product to produce another dried product. As will be apparent at least from the following description, modifications may be made to the exemplary process to provide variants thereof in which other examples of the present invention may be embodied. For example, in some cases, either the internal coating or the external coating and / or decorating may be omitted. Moreover, in the present case and as indicated by the stars labelled Ins. 1 to Ins. 5 in Figure 1, the process comprises inspecting or evaluating the hollow further-moulded fibre product, the internally coated product, the closable or closed product, the externally coated or decorated product, and the dried product to produce respective evaluated products. In some examples, the receptacle is the hollow moulded fibre product, the hollow further-moulded fibre product, the internally coated product, the closable or closed product, the externally coated or decorated product, one of the dried products, or one of the respective evaluated products. In this example, providing the fibre suspension comprises preparing the fibre suspension from ingredients thereof. More specifically, the preparing comprises providing pulp fibres, such as paper pulp fibres, and mixing the pulp fibres with a liquid to provide hydrated pulp fibres. In this example, the pulp fibres are provided in sheet form from a supplier and the liquid comprises water and one or more additives. In this example, the liquid is mixed with the pulp fibres to provide hydrated pulp fibres having a solid fibres content of 1 wt% to 5wt% (by dry mass of fibres). In examples, the one or more additives includes a sizing agent, such as alkylketene dimer (AKD). The hydrated pulp fibres typically comprise AKD in an amount of 0.4wt% with respect to the total dry mass of the solid fibres in the hydrated pulp fibres. In some examples, one or more additives are present in the liquid at the point of mixing the pulp fibres with the liquid. In some examples, one or more additives are included in the hydrated pulp fibres after mixing the pulp fibres with the liquid (for example, the pulp fibres are hydrated for a period of time, such as from 2 to 16 hours, and then one or more additives are supplied to the hydrated pulp fibres). The hydrated pulp fibres are passed between plates of a valley beater 11 or refiner that are in motion relative to each other. This fibrillates some, or all, of the fibres, meaning that cell walls of those fibres are caused to become partially delaminated so that wetted surfaces of those fibres comprise protruding hairs or fibrillations. These fibrillations will help to increase a strength of bonds between the fibres in the dried end product. In other examples, the valley beater 11 or refiner may be omitted. The resultant processed pulp is stored in a vat 12 in a relatively concentrated form (for example, a solid fibres content of lwt% to 5wt%) to reduce a required storage space. At an appropriate time, the processed pulp is transferred to a mixing station 13 at which the processed pulp is diluted in further water and, optionally, mixed with one or more additives (as well as, or in place of, the one or more additives provided with the hydrated pulp fibres) to provide the fibre suspension ready for moulding. In this example, the solid fibres account for 0.7wt% of the resultant fibre suspension (by dry weight of fibres), but in other examples the proportion of solid fibres in the fibre suspension may be different, such as another value in the range of 0.5wt% to 5wt%, or 0.1 wt% to lwt%, of the fibre suspension (by dry weight of fibres). In some examples, the one or more additives mixed with the processed pulp and water includes a dewatering agent, such as modified and / or unmodified polyethylene imine (PEI), for example modified PEI sold under the trade name Polymin® SK. In some examples, the one or more additives are mixed with the water, and the water and one or more additives subsequently mixed with the processed pulp; in other examples, the processed pulp and water are mixed, and the one or more additives subsequently mixed with the processed pulp and water. The fibre suspension typically comprises Polymin® SK in an amount of 0.3wt% with respect to the total dry mass of the solid fibres. Mixing of the fibre suspension at the mixing station 13 helps to homogenise the fibre suspension. In other examples, the processed pulp or the fibre suspension may be provided in other ways, such as being supplied ready-made. Downstream of the vat 12 and the mixing station 13 is a first moulding station that comprises a porous first mould 15. In this example, the porous first mould 15 comprises two half-moulds 14 that are movable towards and away from each other, in this case using a hydraulic ram. In this example, each of the half-moulds 14 is a monolithic or unitary tool formed by additive manufacturing (for example, 3D-printing) that defines a mould profile, and, when the half-moulds 14 are brought into contact with each other, their respective mould profiles cooperate to define the mould cavity in which the hollow moulded fibre product is to be formed. Each half-mould 14 itself defines a smaller moulding cavity and, when brought into cooperation with a second half-mould 14, the smaller moulding cavities combine to provide the overall mould cavity. The two halfmoulds 14 may themselves be considered “splits” or “moulds” and the overall porous first mould 15 may be considered a “split-mould” or, again, a “mould”. In other examples, the porous first mould 15 may comprise more than two splits 14, such as three, four or six splits, that cooperate to define the moulding cavity. In Figure 1, the fibre suspension (also known as slurry) is top-filled into the porous first mould 15, in contrast to moulding processes that dip a mould in slurry. The fibre suspension is drawn under vacuum via a line 16 and into the porous first mould 15, with excess suspending liquid being drawn through the porous first mould 15 under vacuum via a line 18 into a tank 17. Shot mass may be controlled by measuring (for example, weighing) the amount of liquid drawn into the tank 17. A weight scale platform supporting the tank 17 is visible in Figure 1. Once a required amount (for example, a predetermined volume, such as 10 litres, or a predetermined mass, such as 10 kilograms) of liquid has been collected in the tank 17, suction of the suspending liquid through the porous first mould 15 is stopped and the first mould 15 is opened to ambient air. In this example, the suspending liquid drawn with the fibre suspension in line 16 is water, or predominantly water (as additives may also be present). The liquid drawn under vacuum via the line 18 and into the tank 17 is substantially free of fibres, since these are left behind against the walls of the porous first mould 15 to form the hollow moulded fibre product. In one example, in order to remove further suspending liquid (for example, water) from the hollow moulded fibre product, and form or consolidate the three-dimensional shape of the product, high pressure fluid (such as compressed air) is introduced into the first mould 15 to compress the fibre suspension against the cavity wall of the first mould 15. This process strengthens the product so that it can be handled, and displaces water from in between the fibres, thereby increasing the efficiency of a subsequent drying process. The fluid is regulated using a hydraulic pump 20. The pump 20 has a cylinder that displaces the fluid in a line 21 into the first mould 15. In an alternative example, an impermeable inflation element in the form of a collapsible bladder is inserted into the first mould 15 and expanded, by introduction of a fluid into the bladder from the line 21, to act as an internal high-pressure core structure for the first mould 15. In such an alternative, the fluid within the line 21 is preferably non-compressible, such as water or oil, although in other examples it could be a compressible fluid, such as air. Water has the advantage over other non-compressible liquids that any leaking or bursting of the bladder will not introduce a new substance to the system (since the suspending liquid is already water, or predominantly water). Demoulding occurs when the first mould 15 opens for removal of the self-supporting hollow moulded fibre product 22. Mould cleaning 23 is preferably performed subsequently, to remove any remaining small fibres and / or other debris and maintain a porosity of the porous first mould 15. In this example, a radially firing high-pressure jet is inserted into the mould cavity while the first mould 15 is open. This dislodges debris from the wall of the mould cavity. Alternatively, or in addition, water from the tank 17 is pressurised through the back of the porous first mould 15 to dislodge entrapped fibres and / or other debris. Water is drained for recycling back to an upstream part of the system. It is noteworthy that cleaning is important for conditioning the first mould 15 for re-use. The first mould 15 may appear visibly clean after removal of the receptacle, but its performance could be compromised without cleaning. According to Figure 1, the hollow moulded fibre product 22 is subsequently transported to a second moulding station where, in a, for example, aluminium, mould 25, pressure and heat are applied for thermoforming a desired neck and surface finish, optionally including embossed and / or debossed surface features. After two halves of the mould 25 have closed around the product 22, a pressuriser is engaged. For example, a bladder 26 (for example, a thermoforming bladder 26) is inserted into the product 22. The bladder 26 is inflated with a pressurised fluid supplied via a line 27 by a pump 28 . The pressurised fluid is preferably a non-compressible fluid such as water or oil, although in other examples it could be a compressible fluid such as air. In other examples, during supply, the pressurised fluid is heated with, for example, a heater or, alternatively, is cooled with, for example, a heat exchanger. An external mould block 24 of the mould 25, and / or the mould 25 itself, is also, or alternatively, heated in some examples. After thermoforming, a state of the product 22, which may now be considered a hollow further-moulded fibre product, is considerably more rigid, with more compressed side walls, as compared with the state of the product 22 at demoulding from the first mould 15. A drying stage 30 (for example, a microwave drying process or other drying process) is performed on the product 22 downstream of the thermoforming, as shown, to provide a dried product. In one example, the drying stage 30 is performed before thermoforming to provide a dried product. However, moulding in the mould 25 requires some water content to assist with bonding during the compression process. The drying may be performed using a dryer, such as a machine that acts to cause drying of the product or simply a shelf or other support on which the product 22 rests while drying. The product 22 is then subjected to an internal-coating stage during which, in this example, an interior coater in the form of a spray lance 31 is inserted into the product 22 and applies one or more surface coatings to internal walls of the product 22 to produce an internally coated product. In another example, the product 22 is instead filled with and subsequently drained of a liquid that coats the internal walls of the product 22. In practice, such coatings provide a protective layer to prevent egress of contents into the bottle wall, which may permeate and / or weaken it. Coatings will be selected dependent on the intended contents of finished receptacle, for example, a beverage, foodstuff, detergent, lubricant, pharmaceutical product, etc. In this example, the internally coated product 22 is then subjected to a curing or drying process 32, which can be configured or optimised dependent on the internal coating, for example, drying for twenty-four hours at ambient conditions or by a flash drying method. The drying again may be performed using a dryer, such as a machine that acts to cause drying of the product or simply a shelf or other support on which the product 22 rests while drying. Following the drying, the coated product 22 is considered another dried product. A closure or mouth forming process is then performed on the product 22 by a closure-part applicator to produce a closable or closed product. For example, as shown in Figure 1, a neck fitment 33 is affixed to the dried product. This results in the product being closable subsequently by positioning of a cap, lid or other closure relative to the neck fitment. An exterior coating and / or decoration is then applied to the product 22 by an exterior coater and / or a decorator, respectively, as shown in the further stage 34, to produce an externally coated and / or decorated product. In one example, the product 22 is dipped into a liquid to coat its outer surface, as shown in Figure 1. In another example, the outer surface receives the external coating in a different manner. The coating and / or decoration may cover all or only part of an external surface of the product. The product 22 is then allowed to dry in warm air to produce another dried product. In other examples, the drying may be performed using a dryer such as one of those discussed above. The product 22 may therefore be fully formed, considered the end “receptacle”, and ready to accept contents therein. In other examples, the receptacle may be fully formed without the neck fitment 35 being affixed and / or without the interior coating being applied and / or without the exterior coating being applied and / or without the decoration being applied and / or immediately after one of the drying processes or one of the inspecting and / or evaluating processes. For example, in some cases, the product is provided with the closure part by moulding the closure part during moulding of the product at the first moulding station and / or the second moulding station. Reference is now directed to Figures 2A-2D, which illustrate an example mould system 100 according to an example of the invention. Attention is directed firstly to Figures 2A and 2B, which are, respectively, a front view and a sectional view of a first 14a of two mould parts 14a, 14b that are comprised by the mould system 100. The two mould parts may be referred to as “splits” or half-moulds of an overall “split-mould” or mould 15, similarly to the mould 15 shown in Figure 1. As may be seen, located on the first mould part 14a are several cleaning fluid emitters 141, each of which is operable to emit an outflow (in the form of a spray) of cleaning fluid (such as water or a water-based cleaning fluid) towards the second 14b of the two mould parts 14a, 14b, for cleaning the second mould part 14b. Accordingly, the cleaning fluid emitters 141 located on the first mould part 14a are directed outwardly from the first mould 14a, as is apparent from Figure 2B. In the particular example shown, the cleaning fluid emitters 141 are spray nozzles; however, this is not essential and in other examples the emitters could be configured as slits or other fluid emitting structures. Moreover, rather than being configured to emit an outflow in the form of a spray, each of (or some of) the cleaning fluid emitters 141 could be configured to emit an outflow in the form of a jet, for example. The second mould part 14b is essentially the same as the first mould part 14a. Hence, located on the second mould part 14b are several cleaning fluid emitters 141, each of which is operable to emit an outflow (again, in the form of a spray) of cleaning fluid towards the first mould part 14a for cleaning it. Accordingly, the cleaning fluid emitters 141 located on the second mould part 14b are directed outwardly from the second mould 14b. While the respective outflows of cleaning fluid from the cleaning fluid emitters 141 located on the first mould part 14a are emitted towards the second 14b of the two mould parts 14a, 14b, it should be understood that, in some cases, an amount of the thus-emitted cleaning fluid may be directed (or re-directed) towards the first mould part 14a. For example, at least one of the cleaning fluid emitters could be configured to emit an outflow with a sufficiently broad angular range that an amount of the outflow is directed towards the first mould part 14a. As a further example, the outflow from at least one of the cleaning fluid emitters might rebound off the second mould part 14b and thereby be redirected back towards the first mould part 14a. Hence, some or all of the outflows of cleaning fluid from the cleaning fluid emitters 141 located on the first mould part 14a may, in some cases, clean the first mould part 14a, as well as the second mould part 14b. Alternatively, or additionally, the respective outflows of cleaning fluid from the cleaning fluid emitters 141 located on the second mould part 14b may, in some cases, clean the second mould part 14b , as well as the first mould part 14a. Emitting sprays of cleaning fluid from the cleaning fluid emitters 141 may remove material from the mould parts 14a, 14b that could negatively impact the moulding of subsequent hollow moulded fibre products, for example in terms of their surface finish or their ease of removal from the mould. Furthermore, by using emitters 141 that are located on the mould parts 14a, 14b, separate cleaning tools may not need to be used as frequently (for example, they might only be used daily or weekly) or may not need to be used at all. As is apparent from Figures 2A and 2B, in the particular example shown, each cleaning fluid emitter 141 is located within a respective recess or alcove 143 in a substantially planar engaging surface 149 of the first mould part 14a. When the two mould parts 14a, 14b are brought together, into a closed arrangement (as shown in Figures 2C and 2D), the respective engaging surfaces 149 of the two mould parts 14a, 14b come into face-to-face contact with each other. The recesses on each mould part 14a, 14b receive (at least partially) the cleaning fluid emitters from the other mould part 14b, 14a, facilitating this face-to-face contact of the engaging surfaces 149. As is apparent from Figure 2B, in the particular example shown, each mould part 14a, 14b comprises a number of conduits 142 for supplying cleaning fluid to the cleaning fluid emitters 141 located on the mould part in question. The conduits 142 are connected to a source of pressurized cleaning fluid (not shown), which comprises a cleaning fluid reservoir and a pump. However, the conduits 142 and the source of pressurized cleaning fluid are merely illustrative examples, and the mould system 100 may be configured in various other ways in order to enable each cleaning fluid emitter 141 to emit a spray of cleaning fluid towards another mould part 14a, 14b. Returning to Figure 2A, it may also be noted that, in the particular example shown, a total of six cleaning fluid emitters 141 are located on each of the mould parts 14a, 14b. However, this is by no means essential and in other examples fewer or more than six cleaning fluid emitters 141 can be located on each of the mould parts 14a, 14b. Indeed, the inventors consider that mould systems with only one cleaning fluid emitter 141 on each mould part 14a, 14b may perform satisfactorily. Furthermore, it is by no means essential that the same number of cleaning fluid emitters 141 be located on each of the mould parts 14a, 14b. Still further, given that cleaning fluid emitted by an emitter may, in some cases, clean the mould part on which the emitter is located, as well as cleaning another one of the mould parts, it is considered that a mould system with only one cleaning fluid emitter 141 in total may perform satisfactorily. It may further be noted that, in the particular example shown in Figures 2A-2D, each cleaning fluid emitter 141 forms a part of (is comprised by) one of the mould parts 14a, 14b. However, this is by no means essential, and the inventors consider that the mould system 100 will operate suitably where each cleaning fluid emitter is a discrete component that is simply located on, or mounted on, a mould part. Reference is now directed to Figures 2C and 2D, which show, respectively, atop view and a sectional view of the mould system 100 of Figures 2A and 2B, where the mould system 100 is in a closed arrangement. In the closed arrangement, the mould parts 14a, 14b define a space within which the hollow moulded fibre product 22 is moulded, during use of the system 100. As shown, the space defined or enclosed by the mould parts 14a, 14b comprises a mould cavity 36, the internal surfaces of which define the outer shape of the hollow moulded fibre product 22. As indicated by the dash-dotted line in Figure 2C, the section shown in Figure 2D is taken through the centre of the mould cavity 36. Consequently, the shape of the mould cavity 36 is clearly visible in Figure 2D. As shown, the mould cavity 36 comprises a neck portion 36b, which is open at one end, to enable fibre suspension to be introduced into the cavity 36, and which opens at the other end to a main body portion 36a of the cavity 36, where the width of the cavity 36 is at its greatest. The cross-sectional shape of the main body portion 36a of the cavity is shown in dashed line in Figure 2C to illustrate the relative position of the cavity 36 within the mould 15, when the mould parts are in the closed arrangement. Returning to Figure 2D, in the illustrated example, the mould 15 comprises a plurality of passageways 38 that provide fluid communication between the cavity 36 and an exterior of the mould 15. When a fibre suspension is introduced into the mould cavity 36 with the mould parts 14a, 14b in a closed arrangement, to form a hollow moulded fibre product from the fibre suspension (for example, as described above with reference to the mould 15 of Figure 1), a negative pressure is applied to the exterior of the mould 15 so that excess suspending liquid is drawn out of the mould cavity 36 through the passageways 38. It should also be noted that, in the particular example shown in Figures 2A-2D, the mould parts 14a, 14b are housing parts, which are configured to receive a number of mould inserts (or “screens”) 145a, 145b. Consequently, the mould parts 14a, 14b in the illustrated example comprise mould insert engagement portions 144a, 144b. In the illustrated example, these mould insert engagement portions 144a, 144b are hollow portions that have a corresponding shape to the exterior of the mould insert 145a, 145b received by the mould part 14a, 14b in question; however, they may have any suitable shape to engage with the particular mould insert 145a, 145b. As is also apparent from Figure 2D, the mould inserts 145a, 145b together define one or more internal surfaces of the mould cavity 36. In some examples, such mould inserts 145a, 145b can be removed from the mould parts 14a, 14b, for instance so as to be replaced with other mould inserts, which enable receptacles with different shapes to be formed, and / or so as to allow deep cleaning of the mould inserts 145a, 145b. It may further be noted that, in the specific example shown, each mould part 14a, 14b is configured to receive a respective mould insert 145a, 145b. However, this is by no means essential and in other examples each mould part 14a, 14b could, for instance, be configured to receive plural mould inserts. Because the mould parts 14a, 14b of the illustrated example are housing parts that are configured to receive mould inserts 145a, 145b, the space defined or enclosed by the mould parts 14a, 14b in the closed arrangement comprises not only the mould cavity 36 but also the surrounding space(s) in which the mould inserts 145a, 145b are situated. It is, however, by no means essential that the mould parts 14a, 14b are housing parts that receive mould inserts 145a, 145b. Accordingly, in other examples, the mould parts 14a, 14b may be configured so that they themselves define the internal surfaces of the mould cavity 36 in the closed arrangement. In such cases, the space defined or enclosed by the mould parts 14a, 14b in the closed arrangement may be one and the same as the mould cavity 36. Hence, or otherwise, each mould part 14a, 14b may comprise a concave portion that defines part of a mould cavity when the mould part is moved into engagement with the other mould part 14a, 14b. It should further be noted that, although the particular example of a mould system 100 shown in Figures 2A-2D comprises only two mould parts 14a, 14b, this is by no means essential. Hence, in other examples, the mould system 100 may comprise any suitable number of mould parts, such as three, four or more. Moreover, in examples where the mould system 100 comprises three or more mould parts, the cleaning fluid emitters 141 on a given mould part need not all emit flows that are directed towards the same one of the other mould parts. For instance, in a system having first, second and third mould parts, some of the cleaning fluid emitters 141 of the first mould part may emit sprays that are directed towards a second mould part, whereas other cleaning fluid emitters 141 of the first mould part may emit sprays that are directed towards the third mould part. Attention is now directed to Figures 3A-3J, which are top views of the mould system 100 of Figures 2A-2D, taken at respective, different points in time, during the opening and cleaning of the mould 15. The cross-sectional shape of the main body portion 36a of the cavity 36 is shown in dashed line in Figures 3A-3J, so as to indicate the relative position of the two halves of the cavity 36 during cleaning of the mould 15. Reference is directed firstly to Figure 3A, which shows the mould parts 14a, 14b of the mould 15 in the closed arrangement, at a point in time after the moulding of a hollow moulded fibre product (not shown) within the cavity 36 of the mould 15. As indicated by the arrow in Figure 2A, the first mould part 14a is then moved relative to the second mould part 14b. In this way, the mould parts 14a, 14b move apart into an open arrangement, which is shown in Figure 2B. Once the mould parts 14a, 14b are in the open arrangement, the hollow moulded fibre product (not shown) is removed from the mould 15, in this example using a mechanical arm (a robotic arm, as depicted in Figure 5). In other examples, the hollow moulded fibre product may be removed from the mould 15 by another mechanical device, or by hand. Having removed the hollow moulded fibre product from the mould 15, the mould 15 is cleaned with the aid of the cleaning fluid emitters 141 located on the mould parts 14a, 14b. An example of such a cleaning procedure is illustrated in Figures 3C-3J. It is noted that the following description of the cleaning of the mould 15 focuses on the operation of only two cleaning fluid emitters 141 for each mould part 141a, 141b: a first 141(1) and a second 141(2) cleaning fluid emitter, which are located on the first mould part 14a, and a third 141(3) and a fourth 141(4) cleaning fluid emitter, which are located on the second mould part 14b. This is because the cleaning fluid emitters 141 of the mould parts 14a, 14b can be configured to be operated in groups, with the first, second, third and fourth cleaning fluid emitters 141(1)-(4) belonging to (and therefore being representative of) respective such groups. For example, the cleaning fluid emitters on the same lateral side of a mould part as a given one of the first, second, third and fourth cleaning fluid emitters 141(1)-(4) may be in the same group and thus may be operated simultaneously. Thus, the emitters on the left-hand side of Figure 2A belong to one group, and those on the right-hand side of Figure 2A belong to another group. Accordingly, although Figures 3C-3J illustrate the operation of just the first, second, third and fourth cleaning fluid emitters 141(1)-(4), it should be understood that two respective, further cleaning fluid emitters in the same group operate simultaneously with each of the first, second, third and fourth cleaning fluid emitters 141 (I )-(4). Reference is firstly directed to Figure 3C, which shows a first stage of the cleaning procedure. As may be seen, in this stage, the first and fourth cleaning emitters 141(1), 141(4) operate simultaneously, each emitting a corresponding spray of cleaning fluid. As is apparent, the sprays do not collide with each other, which may lead to effective cleaning of the mould 15 by the sprays. As indicated by the arrow in Figure 3C, while the sprays are being emitted by the first and fourth cleaning emitters 141(1), 141(4), the first mould part 14a moves towards the second mould part 14b, until the first mould part 14a reaches the position shown in Figure 3D. As is apparent from comparing Figure 3D with Figure 3C, this movement leads to each spray sweeping over the mould part towards which it is directed. More particularly, each spray sweeps over a full width w of the portion of the mould cavity 36 in the mould part 14a, 14b towards which the spray is directed. As indicated by the arrow in Figure 3D, while respective sprays are being emitted by the first and fourth cleaning emitters 141(1), 141(4), the first mould part 14a moves away from the second mould part 14b, until the first mould part 14a reaches the position shown in Figure 3E. Thereupon, as indicated by the arrow in Figure 3E, the first mould part 14a then moves back towards the second mould part 14b once more, until the first mould part 14a reaches the position shown in Figure 3F. As shown, the respective sprays continue to be emitted by the first and fourth cleaning emitters 141(1), 141(4) during this movement. At that point, the first and fourth cleaning 141(1), 141(4) are deactivated, and the second and third cleaning fluid emitters 141(2), 141(3) are operated instead, as shown in Figure 3G. As indicated by the arrow in Figure 3G, while respective sprays are being emitted by the second and third cleaning fluid emitters 141(2), 141(3), the first mould part 14a moves away from the second mould part 14b, until the first mould part 14a reaches the position shown in Figure 3H. As is apparent from comparing Figure 3G with Figure 3H, this movement leads to each spray sweeping over the mould part towards which it is directed. More particularly, each spray sweeps over a full width w of the portion of the mould cavity 36 in the mould part 14a, 14b towards which the spray is directed. At that point, as indicated by the arrow in Figure 3H, the first mould part 14a then moves back towards the second mould part 14b, until the first mould part 14a reaches the position shown in Figure 31. As shown, respective sprays continue to be emitted by the second and third cleaning fluid emitters 141(2), 141(3) during this movement. Once the first mould part 14a reaches the position shown in Figure 31, the exemplary cleaning procedure is completed and the second and third cleaning fluid emitters 141(2), 141(3) are deactivated, as shown in Figure 3J. With the cleaning procedure completed, the first mould part 14a moves back into engagement with the second mould part 14b, as indicated by the arrow in Figure 3 J. At that point, the mould parts 14a, 14b are once again in the closed arrangement, ready to form a further hollow moulded fibre product within the mould 15. It should be understood that the cleaning procedure described above with reference to Figures 3C-3J is merely an example that is intended to illustrate various principles of operation of the system 100. Moreover, although it was assumed that, in the description above of the example of Figures 3A-3J, the cleaning fluid emitters of the mould parts 14a, 14b are operated in groups, this is by no means essential. Hence, in other examples, each cleaning fluid emitter 141 may be operated independently. Moreover, first and second mould parts 14a, 14b may comprise first, second, third and fourth cleaning fluid emitters 141 (I )-(4) as described above, but without groups being implemented (for example, because the only cleaning emitters located on the mould parts are the first, second, third and fourth cleaning fluid emitters 141(1)-(4) as described above), or with groups being implemented differently, for example with the emitters on a given side of a mould part being assigned alternately to two groups. Furthermore, the inventors consider that the particular movements that the first mould part 14a is illustrated as carrying out in Figures 3C-3J are but one example of “cleaning movements” that can be carried out by a first mould part 14a. As used herein, a “cleaning movement” is a movement that a first mould part (which in this context is not necessarily the first mould part 14a as described above) carries out relative to a second mould part (again, not necessarily the second mould part 14b as described above), during which at least some of the cleaning fluid emitters 141 located on the first mould part emit respective sprays of cleaning fluid towards the second mould part. Viewed at a general level, during the cleaning procedure shown in Figures 3C-3J, the first mould part 14a may be considered as carrying out a first reciprocating cleaning movement, during which the first and fourth cleaning fluid emitters 141(1), 141(4) are operated, and a second reciprocating cleaning movement during which the second and third cleaning fluid emitters 141(2), 141(3) are operated. Such reciprocating cleaning movements during which cleaning emitters are operated may provide an efficient, but thorough cleaning of a mould 15. Relatedly, it may be noted that, throughout the cleaning procedure shown in Figures 3C-3J, the first mould part 14a remains stationary (e.g., relative to a support structure of the system 100 and / or or relative to the local environment in which the system 100 is installed); hence, it does not carry out any cleaning movements. However, this is by no means essential and in other examples the second mould part 14b might carry out one or more cleaning movements at the same time as the cleaning movements of the first mould part 14a, or at different times. It may further be noted that, in the mould system 100 shown in Figures 2A-3J, the orientation of each cleaning fluid emitter is fixed relative to the mould part on which it is located. Such an arrangement may be simpler to manufacture and / or control, particularly as compared with a system where the orientation of each cleaning fluid emitter is variable and controllable. The exemplary cleaning procedure shown in Figures 3C-3J is illustrative of how, in examples where the orientation of each cleaning fluid emitter is fixed, cleaning movements may apply the respective sprays from the cleaning fluid emitters over a desired range of angles and locations to suitably remove residual material from the mould cavity. Still further, it may be noted that, in the example illustrated in Figures 3A-3J, the first mould part 14a starts from its position in the open arrangement of the mould 15 and then, when carrying out its first cleaning movement, it moves back towards the second mould part 14b (see Figure 3 C) along a part of the same path it took when moving from the closed arrangement to the open arrangement. It then moves away from the second mould part 14b (see Figure 3D) along the same part of the path. The inventors envisage that examples where a mould part moves along at least a portion of the path that it moved along when moving from the open arrangement to the closed arrangement may be particularly simple to implement and / or control. This may, for example, be because components used to cause and / or control the movement of the first mould part between the open arrangement and the closed arrangement can also be used to cause and / or control the movement of the first mould part during the one or more cleaning movements. Although a wide variety of cleaning movements are described above, it will be appreciated that still further cleaning movements may be carried out by first, second, third etc. mould parts in other examples. It should also be appreciated that the system may be configured in various ways to be capable of moving the mould parts 14a, 14b. For instance, one or both of the mould parts 14a, 14b may be moved mechanically (e.g., using an electric motor) or hydraulically (e.g., using one or more pistons). Additionally (or alternatively), the mould parts 14, 14b may be mounted on tracks that (at least partly) define the paths on which they move. Furthermore, in various examples, including those described above, the system may be configured such that, when a mould part moves, it is moving relative to a support structure of the mould system and / or or relative to the local environment in which the system is installed. Returning to Figure 3B, it should be noted that the first, second, third and fourth cleaning fluid emitters 141(1)-(4) are disposed in a specific relative arrangement in the example of Figures 2A-3J. In particular, as shown, the second cleaning fluid emitter 141(2) is offset from the first cleaning fluid emitter 141(1) in a first direction 101, and the fourth cleaning fluid emitter 141(4) is offset from the third cleaning fluid emitter 141(3) in the same, first direction 101. It will also be noted that emitters from different mould parts are offset relative to each other in the first direction 101. Specifically, the fourth cleaning fluid emitter 141(4) is offset from the first cleaning fluid emitterl41(l) in the first direction 101, and the second cleaning fluid emitter 141(3) is offset from the third cleaning fluid emitter 141(2) in the first direction 101. Such an arrangement may decrease the likelihood that sprays from different emitters collide in use. However, this specific arrangement is by no means essential, and the emitters may be arranged differently in other examples. Moreover, it should be appreciated that the first, second, third and fourth cleaning fluid emitters 141(1)-(4) could, in still further examples, be additionally offset relative to each other in directions perpendicular to the first direction 101. It is also apparent from Figure 3B that the cleaning fluid emitters 141 are not directed straight outwards on the mould part 14a, 14b on which they are each located. Rather, each cleaning fluid emitter 141(1)-(4) is directed partly outwards and partly towards the opposing side of the mould part to that on which it is located. Hence, the first cleaning fluid emitter 141(1) is angled towards the side on which the second cleaning fluid emitter 141(2) is located, and the second cleaning fluid emitter 141(2) is angled towards the side on which the first cleaning fluid emitter 141(1) is located. Such an arrangement may be effective at cleaning the portion of the mould cavity 36 corresponding to the second mould part 14b, for example because that portion of the mould cavity 36 is cleaned from different directions. It may be noted that the third cleaning fluid emitter 141(3) is similarly angled towards the side on which the fourth cleaning fluid emitter 141(4) is located, and the fourth cleaning fluid emitter 141(4) is angled towards the side on which the third cleaning fluid emitter 141(3) is located. In specific examples, some or all of the cleaning fluid emitters 141(1)-(4) may be directed at an angle 0 of between about 35 degrees and about 55 degrees, or between about 40 degrees and about 50 degrees, with respect to an offset direction, which for a given emitter, extends between the side of the mould part on which the emitter is located, to the opposing side. In the example shown in Figure 3B, the offset direction is the first direction 101 (though this is not necessarily the case in other examples with differently arranged cleaning fluid emitters). In certain examples, the angle 0 is 45 degrees. As noted above, in the example illustrated in Figures 3A-3J, the sprays do not collide with each other during cleaning of the mould 15, which may lead to effective cleaning of the mould 15 by the sprays. It should be noted that this is, in part, a result of the various cleaning fluid emitters 141 being operated in a predetermined order. The inventors consider that this is a principle that can be applied more broadly and is not specific to the particular arrangement of the cleaning fluid emitters 141 discussed above with reference to Figures 2A-3J. Thus, according to this principle, for a variety of arrangements of cleaning fluid emitters, the cleaning fluid emitters can be operated in a predetermined order. The predetermined order may, for example, more effectively clean the particular mould. For instance, as is the case in the example illustrated in Figures 3 A-3 J, the predetermined order might avoid collisions between the respective sprays emitted by the cleaning fluid emitters (e.g., as would occur if the respective sprays were emitted simultaneously). In other examples, the predetermined order might account for the particular shape of the mould being cleaned. Reference is now directed to Figures 4A and 4B, which are sectional views that illustrate additional details of the mould system 100 of Figures 2A-2D, with the views being taken at different points in time. As may be seen from Figures 4A and 4B, the mould system 100 comprises not only the mould 15 described above with reference to Figures 2A-3J, but also comprises a chamber 146, within which the mould 15 is disposed. As may be seen, the system 100 further comprises a door 147, which is moveable between an open configuration, shown in Figure 4A, and a closed configuration, shown in Figure 4B. As shown in Figure 4A, in the open configuration, the chamber 146 is accessible from an exterior thereof through an opening 148 in the roof of the chamber. The opening 148 for example allows a fibre suspension supply system 50 to access the mould 15, and to thereby introduce a volume of fibre suspension into the cavity 36 of the mould 15 that is then moulded into a hollow moulded fibre product. During such moulding, the door 147 remains open. Once moulded, the hollow moulded fibre product is removed from the mould 15 and the fibre suspension supply system 50 is disengaged from the mould 15. In preparation for cleaning of the mould, the door 147 of the chamber is closed, as indicated by the arrow in Figure 4A. Figure 4B shows the chamber a short time later, in the closed configuration. As may be seen, the opening 148 in the roof of the chamber is covered by the door 147. As a result, the door 147 impedes the escape of cleaning fluid from the chamber 146 during the cleaning of the mould parts 14a, 14b discussed above. Once cleaning of the mould parts 14a, 14b has concluded, the door is opened once more, so that the chamber 146 returns to its open configuration, as shown in Figure 4A. The fibre suspension supply system 50 can then re-engage with the mould 15 to supply a further volume of fibre suspension into the cavity 36 of the mould 15 that is then moulded into a further hollow moulded fibre product. Reference is directed next to Figure 5, which is a schematic diagram that shows additional details of the mould system of Figures 2-4B. As shown, the mould system 100 of Figure 5 comprises the mould 15 described above with reference to Figures 2A-3J and further comprises the chamber 146 described above with reference to Figures 4A and 4B, within which the mould 15 is disposed. As shown in Figure 5, the mould system 100 further comprises a fibre suspension supply system 50, which is configured to deposit a volume of a fibre suspension within the cavity 36 of the mould 15, so that the volume of the fibre suspension can be moulded by the cavity 36 of the mould 15 into a hollow moulded fibre product 22. In the particular example shown, the fibre suspension supply system comprises a tank 56, which temporarily contains the fibre suspension before it is introduced into the mould 15, an arm 58 and a connecting portion 60. The arm 56 can be moved so that the connecting portion 60 can be connected to the mould 15. Thereafter, fibre suspension can be supplied from the fibre suspension supply system 50 through the arm 58 and connecting portion 60 into the mould 15. As also shown in Figure 5, the mould system 100 further comprises a transport system 170. In the particular example shown, the transport system 170 comprises a mechanical arm, specifically, a robotic arm 175. The transport system 170 is configured to remove the hollow moulded fibre product 22 from the mould 15. It is further configured to transfer the hollow moulded fibre product 22 to the mould 25 of Figure 1 for further moulding. As may therefore be appreciated, the mould system 100 can form part of the receptacle manufacturing line described above with reference to Figure 1, with the mould 15 taking the place of the mould 15 shown in Figure 1 and the fibre suspension supply system 50 taking the place of mixing station 13 and line 16 to supply fibre suspension to the cavity of the primary mould 15. As also shown in Figure 5, the mould system 100 further comprises a control system 80. The control system 80 governs the operation of the mould system 100 and, in particular, controls the mould 15, the fibre suspension supply system 50, the chamber 146 (in particular the door 147 thereof) and the transport system 170. To facilitate such control, the control system 80 is in data or signal communication with the mould 15, the fibre suspension supply system 50, the chamber 146, and the transport system 170, as is indicated in Figure 5 by the lines extending from control system 80. As also shown in Figure 5, the control system 80 comprises a processor 82, which is suitably programmed to govern the operation of mould system 100, based on signals and / or data received from the fibre suspension supply system 50. Although, for the sake of simplicity, the control system 80 is illustrated with a single box in Figure 2 it should be understood that the control system 80 need not be physically or functionally unitary. In particular, components of the control system 80 need not be co-located. Hence, in some embodiments, some or all of the components of the control system 80 may be integrated within other (sub) systems within the overall moulding system 100. Additionally, it is not essential that processing resources of the control system 80 be centralized; to the contrary, processing may be distributed amongst a number of processors that might, for example, be integrated within the various other (sub) systems within the overall moulding system 100. Reference is now directed to Figure 6, which is a flow diagram that illustrates an example of a method 600 of providing a hollow moulded fibre product according to an example of the invention. As shown, the method 600 comprises moving 602 a plurality of mould parts together, into a closed arrangement, to define a mould cavity. The mould parts may, for example, be the mould parts 14a, 14b described above with reference to Figures 2A-5. In addition, such movement of the mould parts into a closed arrangement may be as described above with reference to Figure 3 J. At block 604, the method 600 comprises moulding the hollow moulded fibre product within the mould cavity. The hollow moulded fibre product may be the hollow moulded fibre product 22 described above with reference to Figure 1. At block 606, the method 600 comprises moving the mould parts apart, into an open arrangement. Such movement of the mould parts into an open arrangement may be as described above with reference to Figure 3 A. At block 608, the method 600 comprises removing the hollow moulded fibre product from the mould cavity. At block 610, the method 600 comprises closing a door of a chamber, in which the mould parts are disposed. The chamber may be the chamber 146 described above with reference to Figures 4A-5. However, in other examples the mould parts may not be disposed within a chamber and hence (or otherwise) block 610 is omitted. At block 612, the method 600 comprises emitting a respective spray of cleaning fluid from one or more cleaning fluid emitters, each of which is located on one of the mould parts, each spray being directed towards another one or more of the mould parts. The cleaning fluid emitters may be the cleaning fluid emitters 141 described above with reference to Figures 2-5. In examples, the method 600 comprises operating the one or more cleaning fluid emitters in a predetermined order. The predetermined order may, for example, avoid collisions between the respective sprays emitted by the cleaning fluid emitters that would occur if all sprays were emitted simultaneously. It will be appreciated that there is provided a control system 80 that is configured to cause a mould (such as the mould 15 described above with reference to Figures 2A-5) to provide a hollow moulded fibre product. Also provided is a control system 80 that is configured to cause a mould system (such as the mould system 100 described above with reference to Figure 5) to provide a processed hollow moulded fibre product. Attention is now directed to Figure 7, which shows a schematic diagram of a non-transitory computer-readable storage medium 700 according to an example. The non-transitory computer-readable storage medium 700 stores instructions 730 that, if executed by a processor 720 of a control system 710, cause the processor 720 to perform a method according to an example described herein. In some examples, the control system 710 is or comprises the control system 80 as described above. The instructions 730 comprise: an instruction 731 to move a plurality of mould parts together, into a closed arrangement, to define a mould cavity; an instruction 732 to mould a hollow moulded fibre product within the mould cavity; an instruction 733 to move the mould parts apart, into an open arrangement; an instruction 734 to remove the hollow moulded fibre product from the mould cavity; and an instruction 735 to emit a respective spray of cleaning fluid from one or more cleaning fluid emitters, each of which is located on one of the mould parts, each spray being directed towards another one or more of the mould parts. In other examples, the instructions 730 comprise instructions to perform any of the other example methods described herein. For example, the instructions might comprise an instruction to close a door of a chamber, in which the mould parts are disposed, following the removal of the hollow moulded fibre product from the mould cavity in accordance with instruction 734. It will also be appreciated that there also is provided a receptacle manufacturing line (such as that shown in Figure 1) comprising a mould system (for example as described above with reference to Figures 2A-5) for providing the hollow moulded fibre product and apparatus for performing at least one additional process on the hollow moulded fibre product to provide the receptacle. Similarly, also provided is a method of manufacturing a receptacle, the method comprising performing a method of providing a hollow moulded fibre product (for example as described above with reference to Figure 6), and then performing at least one additional process on the hollow moulded fibre product to provide the receptacle. Examples of the “at least one additional process” are described above with reference to Figure 1. Also provided, as a result of the content of the present application, is use of a receptacle obtained by any of the methods described herein to contain contents. An example such receptacle 800, in the form of a necked receptacle and specifically a bottle, containing contents 810 is shown in Figure 8. The use could be, for example, by a person who puts the contents into the receptacle, by a person who transports the contents, or by a person who wishes to dispose of (for example, to a consumer or end user), offer to dispose of (for example, to a consumer or end user), import, or keep the contents whether for disposal or otherwise. The contents could, for example, be any one or more of the example contents described herein. Also provided is a method of providing a content-containing receptacle. An example such method 900 is shown in Figure 9. The method 900 comprises providing 910 the receptacle, in the form of a necked receptacle and specifically a bottle, and then providing 920 the contents in the receptacle. In this example, block 920 follows block 910, so that block 920 comprises putting the contents into the receptacle that has been provided at block 910. However, in some other examples, blocks 910 and 920 are performed concurrently, so that the providing 910 the receptacle comprises providing the receptacle with the contents already present in the receptacle. The contents could, for example, be any one or more of the example contents described herein. The method 900 also comprises closing 930 an opening of the receptacle after block 920, and applying 940 a label or indicia to the receptacle after block 930. In this example, block 930 involves applying a heat seal to the opening and then screwing a cap or lid onto the receptacle, and block 940 comprises adhering a label onto the receptacle. In respective other examples, the order of blocks 930 and 940 is reversed, blocks 930 and 940 are performed concurrently, block 930 is omitted, and block 940 is omitted. In some examples, block 940 occurs before block 920, or block 940 occurs during block 920. For example, in some cases, the label or indicia is applied to the receptacle, then the contents are provided in the receptacle, and then the receptacle is closed. It will be appreciated that the method 900 could be performed by the same party that manufactures the receptacle, for example so that block 910 comprises the method shown in Figure I. Alternatively, the method 900 could be performed by a different party to that which manufactures the receptacle. In such an alternative, the different party performs block 910 by way of obtaining the receptacle from the party that manufactures the receptacle (such as by way of the method shown in Figure 1) or from an intermediary. Example embodiments of the present invention have been discussed, with reference to the examples illustrated. However, it will be appreciated that variations and modifications may be made without departing from the scope of the invention as defined by the appended claims.

Claims

1. A mould system for providing a hollow moulded fibre product, the mould system comprising:a plurality of mould parts, the mould parts being moveable:together, into a closed arrangement, to define a space within which the hollow moulded fibre product is mouldable, in use; andapart, into an open arrangement; andone or more cleaning fluid emitters, each of which:is located on one of the mould parts; andis configured such that, when the mould parts are in the open arrangement, the cleaning fluid emitter is operable to emit an outflow of cleaning fluid towards another one or more of the mould parts.

2. The mould system of claim 1, wherein the mould parts are housing parts configured to receive a plurality of mould inserts, which together define one or more internal surfaces of a mould cavity for moulding the hollow moulded fibre product when the mould parts are in the closed arrangement.

3. The mould system of claim 1 or claim 2, wherein the one or more cleaning fluid emitters comprise a plurality of cleaning fluid emitters, and wherein the system is configured such that, during use, the plurality of cleaning fluid emitters is operated in a predetermined order.

4. The mould system of any one of claims 1 to 3, wherein, during use of the system and while the mould parts are in the open arrangement, a first of the plurality of mould parts carries out one or more cleaning movements relative to a second of the plurality of mould parts, during which at least one of the one or more cleaning fluid emitters, which is located on the first mould part, emits an outflow of cleaning fluid towards the second mould part.

5. The mould system of claim 4, wherein the first mould part moves along a first path when moving from the open arrangement to the closed arrangement, andwherein the first mould part moves along at least a portion of the first path during the one or more cleaning movements.

6. The mould system of claim 4 or claim 5, wherein, during the one or more cleaning movements of the first mould part, at least one of the one or more cleaning fluid emitters, which is located on the second mould part, emits an outflow of cleaning fluid towards the first mould part.

7. The mould system of any one of claims 4 to 6, wherein, during use of the system and while the mould parts are in the closed arrangement, a mould cavity is defined within the space, andwherein, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full width of the mould cavity of the second mould part.

8. The mould system of any one of claims 1 to 7, wherein at least one of the plurality of mould parts comprises first and second groups of cleaning fluid emitters, the first and second groups being operated at different times to each other.

9. The mould system of any one of claims 1 to 8, wherein the one or more cleaning fluid emitters comprise a first and a second cleaning fluid emitter, which are located on a first of the plurality of mould parts, with the second cleaning fluid emitter being offset from the first cleaning fluid emitter in a first direction,wherein the one or more cleaning fluid emitters further comprise a third and a fourth cleaning fluid emitter, which are located on a second of the plurality of mould parts, the fourth cleaning fluid emitter being offset from the third cleaning fluid emitter in the first direction,wherein the fourth cleaning fluid emitter is offset from the first cleaning fluid emitter in at least the first direction and the second cleaning fluid emitter is offset from the third cleaning fluid emitter in at least the first direction, andwherein, during use of the system and while the mould parts are in the open arrangement, the first and fourth cleaning fluid emitters are operated simultaneously and, subsequently, the second and third cleaning fluid emitters are operated simultaneously.

10. The mould system of any one of claims 1 to 9, wherein the one or more cleaning fluid emitters comprise a first cleaning fluid emitter and a second cleaning fluid emitter, which are located on a first of the plurality of mould parts, andwherein the first cleaning fluid emitter and the second cleaning fluid emitter are:directed outwardly from the first mould part;located on opposing first and second sides of the first mould part, respectively; andangled towards the second and first sides of the first mould part, respectively.

11. The mould system of any preceding claim, further comprising:a chamber, within which the plurality of mould parts is disposed; andat least one door, moveable between:an open configuration, in which the chamber is accessible from an exterior thereof through at least one opening in the chamber; anda closed configuration, in which the at least one opening is covered by the at least one door so as to impede cleaning fluid emitted by the cleaning fluid emitters of the plurality of mould parts from escaping from the chamber.

12. A mould part for use in providing a hollow moulded fibre product, the mould part comprising:one or more cleaning fluid emitters, each of which is operable to emit an outflow of cleaning fluid outwardly from the mould part; andat least one of:a concave portion that defines part of a mould cavity when the mould part is moved into engagement with another mould part; andone or more mould insert engagement portions, which are engageable with a mould insert, the mould insert defining part of a mould cavity when the mould part and mould insert are moved into engagement with another mould part and mould insert.

13. A method of providing a hollow moulded fibre product, the method comprising:moving a plurality of mould parts together, into a closed arrangement, to define a mould cavity;moulding the hollow moulded fibre product within the mould cavity; moving the mould parts apart, into an open arrangement;removing the hollow moulded fibre product from the mould cavity; and emitting a respective outflow of cleaning fluid from one or more cleaning fluid emitters, each of which is located on one of the mould parts, each outflow being directed towards another one or more of the mould parts.

14. The method of claim 13, wherein the one or more cleaning fluid emitters comprise a plurality of cleaning fluid emitters, and wherein the method comprises operating the plurality of cleaning fluid emitters in a predetermined order.

15. The method of claim 13 or claim 14, comprising carrying out one or more cleaning movements of a first of the plurality of mould parts relative to a second of the plurality of mould parts, while the mould parts are in the open arrangement,wherein, during at least some of the one or more cleaning movements, at least one of the one or more cleaning fluid emitters, which is located on the first mould part, emits an outflow of cleaning fluid towards the second mould part.

16. The method of claim 15, wherein the first mould part moves along a first path when moving from the open arrangement to the closed arrangement, andwherein the first mould part moves along at least a portion of the first path during the one or more cleaning movements.

17. The method of claim 15 or claim 16, wherein, during the one or more cleaning movements of the first mould part:the first mould part moves relative to a second of the plurality of mould parts;the at least one of the one or more cleaning fluid emitters located on the first mould part emits an outflow of cleaning fluid towards the second mould part; andat least one of the one or more cleaning fluid emitters, which is located on the second mould part, emits respective an outflow of cleaning fluid towards the first mould part.

18. The method of any one of claims 15 to 17, wherein, during the one or more cleaning movements of the first mould part, the outflow emitted by the at least one cleaning fluid emitter located on the first mould part sweeps across a full width of the mould cavity of the second mould part.19 A moulding system controller configured to cause a mould system to perform the method of any one of claims 13 to 18.

20. A non-transitory storage medium storing machine-readable instructions that, when executed by a processor of a controller for a moulding system, cause the mould system to perform the method of any one of claims 13 to 18.

21. A receptacle manufacturing line comprising the mould system of any one of claims 1 to 11 for providing the hollow moulded fibre product and apparatus for performing at least one additional process on the hollow moulded fibre product to provide the receptacle.

22. A method of manufacturing a receptacle, the method comprising performing the method of any one of claims 13 to 18 to provide the hollow moulded fibre product, and then performing at least one additional process on the hollow moulded fibre product to provide the receptacle.

23. A method of providing a content-containing receptacle, the method comprising providing a receptacle obtained by the method of claim 22 and providing the contents in the receptacle to provide the content-containing receptacle.5 24. The method of claim 23, comprising:closing an opening of the receptacle after the providing contents in the receptacle, and / orapplying a label or indicia to the receptacle.10 25. Use of a receptacle obtained by the method of claim 22 to contain contents.

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