CONTAINER FOR CANDLE PRODUCT

Abstract

Container for candle product intended to be filled with a flammable material, through which a wick is passing. The container is provided with a bottom and with side walls and is made of plastic. The plastic is a polymer containing 40% to 99.99 wt. of polylactide PLA and 0.01% to 60 wt. % of ammonium polyphosphate APP. The polylactide PLA may be a mixture of poly-L-lactide PLLA and poly-D-lactide PDLA isomers, wherein the mixture contains at least 80 wt. % of PLLA and not more than 20 wt. % of PDLA. Ammonium polyphosphate APP may be microencapsulated, wherein microcapsules have a diameter of 25.sub.jun to 55.sub.jun and may contain a melamin coating.

Claims

1. A container for candle product intended to be filled with flammable material with a wick passing through the material, including a bottom and side walls, made of plastic, wherein the plastic is a polymer containing 40 to 99.99 wt. % of polylactide PLA and 0.01 to 60 wt. % of ammonium polyphosphate APP.

2. The container according to claim 1, wherein the polylactide PLA is a mixture of poly-L-lactide PLLA and poly-D-lactide PDLA isomers, wherein the mixture contains at least 80 wt. % of PLLA and not more than 20 wt. % of PDLA.

3. The container according to claim 2, wherein the mixture of polylactide PLA isomers in the form of poly-L-lactide PLLA and poly-D-lactide PDLA contains 4 wt. % to 7 wt. % of poly-D-lactide PDLA.

4. The container according to claim 1, it contains containing 85 wt. % of polylactide PLA and 15 wt. % of ammonium polyphosphate APP.

5. The container according to claim 1, wherein the ammonium polyphosphate APP has the form of microcapsules with diameter 25 μm to 55 μm.

6. The container according to claim 5, wherein the microcapsules have a melamin coating.

7. The container according to claim 5, containing 98.4 wt. % of polylactide PLA and 1.6 wt % of ammonium polyphosphate APP, microencapsulated inside a melamin coating.

Description

EXAMPLE I

[0026] The container for candle product according to the invention is intended to be filled with a flammable material, through which a wick is passing. The plastic in this embodiment is a polymer containing 98.4 wt. % of polylactide PLA and 1.6 wt. % of ammonium polyphosphate APP. In this embodiment, the polylactide PLA is a mixture of poly-L-lactide PLLA and poly-D-lactide PDLA isomers, wherein the mixture contains at least 80 wt. % of PLLA and not more than 20 wt. % of PDLA. On the other hand, ammonium polyphosphate APP in this embodiment has the form of microcapsules in a melamin coating. The microcapsule diameter in this embodiment is 45 μm to 55 μm.

[0027] Before the extrusion process, the polylactide PLA is dried at 60° C. for 24 h. Then, PLA and the microencapsulated ammonium polyphosphate are placed inside a mixer, heated up to 180° C. and extruded, followed by extrusion into multi-well moulds, forming containers for candle products, 19 mm tall and with a diameter of 39 mm. In this embodiment, the container has a bottom and a cylindrical side wall. Once the containers are formed in the multi-well mould and cooled, the mould is open and the formed containers are removed and transferred to filling with a flammable material with an internal wick. In this embodiment, the container has a wall thickness of 1 mm. In other embodiments, the container for a candle product may have different dimensions, shapes and wall thicknesses.

EXAMPLE II

[0028] In the second embodiment, the plastic according to the invention comprises a polymer with the same qualitative composition, but comprises a mixture of 80 wt. % of polylactide PLA and 20 wt. % of ammonium polyphosphate APP. In this embodiment, the polylactide PLA is a mixture of poly-L-lactide PLLA and poly-D-lactide PDLA isomers, wherein the mixture contains at least 95 wt. % of PLLA and not more than 5 wt. % of PDLA. On the other hand, ammonium polyphosphate APP in this embodiment has the form of microcapsules in a melamin coating. The microcapsule diameter in this embodiment is 25.sub.1.im to 35.sub.11m. The process of container production is identical to that presented in Example I.

EXAMPLE III

[0029] In another embodiment, the material of the container contains 95.0 wt. % of polylactide PLA and 5.0 wt. % of ammonium polyphosphate APP microencapsulated in a melamin coating. The process of container production is described in Example I.

EXAMPLE IV

[0030] In another embodiment, the material used to extrude container for candle products contains 85 wt. % of polylactid PLA and 15 wt. % of ammonium polyphosphate APP. Polylactide PLA and ammonium polyphosphate may be present in quantities and forms described in the previous embodiment, but also in other example ratios and forms, not described above, but covered by the scope of protection applicable to the invention. The process of container production and ratios of other mixture ingredients are described in Example I.

EXAMPLE V

[0031] In this embodiment, the mixture of polylactide PLA isomers in the form of isomers—poly-L-lactide PLLA and poly-D-lactide PDLA, used to form a mixture with ammonium polyphosphate APP, contains 4 wt. % of poly-D-lactide PDLA and 96 wt. % of poly-L-lactide PLLA. Other materials and the container production technology are described in Example I.

EXAMPLE VI

[0032] In another embodiment, the mixture of polylactide PLA isomers in the form of isomers—poly-L-lactide PLLA and poly-D-lactide PDLA, used to form a mixture with ammonium polyphosphate APP, contains 7 wt. % of poly-D-lactide PDLA and 93 wt. % of poly-L-lactide PLLA. Further ingredients of the mixture used to extrude containers into the multi-well mould are described in Example I.