Non-Contact Process For Decorating Dye-Permeable Fibres Of A Cosmetic Applicator
Inactive Publication Date: 2011-08-11
ALCAN PACKAGING BEAUTY SERVICES
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0012]In broad terms, the present invention makes use of the surprising observation that sublimation dye travels several millimetres into the air above a heated, pre-printed paper or carrier medium. In other words, contact is not necessary, in that under appropriate heat, a plume of dye emanates from a heated print containing sublimating dye and is absorbed by the heated fibre. It has further been observed that this dye plume can be controlled or optimised in order, for example, to increase the length or the density of the dye plume. This could be referred to as ‘projected sublimation’.
[0015]placing said dye-permeable fibres of the cosmetic applicator at a distance from said dye-carrying surface in the path of the released dye plume, thereby allowing said dye to penetrate and decorate said dye-permeable fibres.
Problems solved by technology
Practically, however, this approach has shortcomings in that, during the applicator manufacturing process, it can be very difficult to assemble the fibres onto the core so as to end up with the initially desired fibre decoration.
A complication is that cosmetic applicators usually have irregular shapes, including figure of eight, peanut-shaped, conical, square etc.
In addition, processes that involve transferring a resinous material containing pigments or dyes, by dipping, spraying or by contact, leave a resinous material on the surface of the fibre which will be in contact with the cosmetic product in use, and will therefore not be acceptable to the final user, either due to chemical compatibility, or lack of adhesion and subsequent flaking off of the resinous material.
However, this has a number of drawbacks when it comes to cosmetic applicators, in that the use of pressure entails risking permanent damage and deformation of the fibres.
Method used
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[0032]As indicated above, the present invention makes use of the surprising observation that sublimation dye travels several millimetres into the air above a heated, pre-printed paper. In other words, contact is not necessary, in that under appropriate heat, a plume of dye emanates from a heated print containing sublimating dye.
[0033]Referring to the figures, the present invention provides a non-contact process 10 for decorating dye-permeable fibres 20 of a cosmetic applicator 22. The applicator 22 comprising a core 24 from which the fibres 20 extend, the core 24 terminating in a handle 26, as is well known in the art. The process 10 comprises heating a dye-carrying surface 28 of a carrier medium 30 to a temperature sufficient to cause a dye plume 32 to be released, and thereby flow away, from said dye-carrying surface 28. This heating step is summarised in block 12 of FIG. 1.
[0034]The carrier medium 30, which is typically thin paper or tissue, e.g. 20 to 120 grams per square meter,...
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Abstract
The present invention provides a non-contact process for decorating dye-permeable fibres of a cosmetic applicator. The process comprises heating a dye-carrying surface of a carrier medium to a temperature sufficient to cause a dye plume to be released from said dye-carrying surface. The process further comprises placing said dye-permeable fibres of the cosmetic applicator at a distance from said dye-carrying surface in the path of the released dye plume, thereby allowing said dye to penetrate and decorate said dye-permeable fibres. The dimensions and the density of the dye plume can be optimised by controlled air flow. In an embodiment, the process comprises decorating all of the dye-permeable fibres simultaneously. Alternatively, the process comprises decorating only a portion of the fibres, the portion being either radial sections around a core to which the fibres are fitted, or longitudinal sections along the length of the core. In an embodiment, the distance between the free ends of the dye-permeable fibres and the dye-carrying surface is at least approximately 0.1 mm.
Description
FIELD OF THE INVENTION[0001]This invention relates to a non-contact process for decorating dye-permeable fibres of a cosmetic applicator.BACKGROUND OF THE INVENTION[0002]Cosmetic applicators typically take the form of a brush applicator or a flocked applicator, both of which include fibres that protrude individually from a central core. Mascara brushes, which form a significant part of the first category, are typically made using black synthetic fibre, such as Nylon, that extends from a core consisting of twisted stainless steel wire. The typical diameter of the fibre is approximately 4 mils (i.e. 0.1 mm). Flocked applicators are typically made with much thinner white Nylon fibres ranging from 0.5 to 25 dtex (mass in grams per 10 kilometres), which are applied using electrostatics to a plastic core, the fibres being held in place by a layer of glue.[0003]There is, however, an increasing demand for cosmetic applicators to have fibres that are decorated in one or more colours, and in ...
Claims
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CPCA45D40/262B41M5/0358A45D2040/0012
InventorCRUTCHLEY, EDGOURMET, SYLVAINTHORNE, NICHOLAS
OwnerALCAN PACKAGING BEAUTY SERVICES