Cosmetic product dispenser made of barrier material

Abstract

A cosmetic product dispenser, typically mascara, includes at least a container forming a reservoir for the cosmetic product, and a cap for sealed closure of the reservoir, optionally provided with an applicator for the cosmetic product. All or part of the reservoir, and at least a side wall of the reservoir, are formed by at least a thermoplastic material moulded part. The thermoplastic material includes EVOH and a second thermoplastic material selected from PA, PET, PBT, and ionomer resin.

1 . Cosmetic product dispenser, typically a mascara dispenser, comprising at least one receptacle forming a reservoir for the said cosmetic product, and a cap for sealed closure of the said reservoir, possibly provided with an applicator for the said cosmetic product, all or part of the said reservoir, and at least one side wall of the said reservoir being formed by at least one moulded thermoplastic part, characterised in that the said thermoplastic material is a mix comprising EVOH and a second thermoplastic material chosen from among PA, PET, PBT and ionomer resin, the EVOH content by weight in the said mix being not more than 50%.  
   
   
       2 . Dispenser according to  claim 1 , in which the EVOH comprises a percentage of ethylene varying from 20 to 50% in mole %.  
   
   
       3 . Dispenser according to  claim 1 , in which the said thermoplastic material comprises an EVOH percentage varying from 10 to 50% by weight.  
   
   
       4 . Dispenser according to  claim 1 , in which the said thermoplastic material forms a layer of thermoplastic material composed of a mix of EVOH and the said second thermoplastic material.  
   
   
       5 . Dispenser according to  claim 4 , in which the said thermoplastic material comprises a percentage of EVOH varying from 10% to 50% by weight, and a percentage of the said second plastic material varying from 90% to 50% by weight.  
   
   
       6 . Dispenser according to  claim 5 , in which the said EVOH percentage varies from 20% to 40% by weight, and the said percentage of the said second plastic material varies from 80% to 60% by weight.  
   
   
       7 . Dispenser according to  claim 1 , in which the said moulded part is formed typically by extrusion-moulding or by injection-moulding, or by extrusion-blowing of the said mix.  
   
   
       8 . Dispenser according to  claim 1 , in which the said thermoplastic material forms a multilayer material with at least two layers of plastic material, and typically with two layers consisting of one layer, typically the inner layer, being composed of a mix of EVOH and the said second thermoplastic material, and one layer, typically the outer layer, typically composed of the said second thermoplastic material.  
   
   
       9 . Dispenser according to  claim 8 , in which the said multilayer material includes at least three layers of plastic material and typically three layers of plastic material, consisting of a central layer composed of a mix of EVOH and the said second thermoplastic material, and an inner layer and an outer layer on each side of the central layer, at least one of these layers being composed of the said second thermoplastic material, and one of the inner or outer layers being composed of a third thermoplastic material.  
   
   
       10 . Dispenser according to  claim 8 , in which the said layer composed of the said EVOH mix is covered by an adhesive tie layer on at least one face or one side, so as to form a multilayer material typically comprising 3 to 5 layers.  
   
   
       11 . Dispenser according to  claim 8 , in which the said thermoplastic material forms a multilayer material with three layers: one layer composed of the said mix of EVOH and the said second thermoplastic material, an adhesive tie layer and a layer typically composed of the said second thermoplastic material or the said third thermoplastic material.  
   
   
       12 . Dispenser according to  claim 8 , in which the said percentage of EVOH in the said mix varies from 10% to 90% by weight, the said percentage of the said second plastic material in the said thermoplastic material varying from 80% to 60% by weight.  
   
   
       13 . Dispenser according to  claim 8 , in which the said multilayer material is a material with five layers, three layers of plastic material and two tie layers: one layer, typically the central layer, being composed of an EVOH layer, and an inner layer and an outer layer on each side of the said central layer, the inner and outer layers composed of the said second thermoplastic material and/or a third thermoplastic material, the said central layer and the said outer and inner layers comprising an adhesive tie layer between them.  
   
   
       14 . Dispenser according to  claim 9 , in which the said third thermoplastic material is chosen from among PE or PP.  
   
   
       15 . Dispenser according to  claim 8 , in which the moulded part is formed by co-extrusion of the said multilayer material, followed by moulding or blowing or co-injection.  
   
   
       16 . Dispenser according to  claim 1 , in which the said second thermoplastic material is a PA preferably chosen from among amorphous PAs, and totally or partially aromatic PAs.  
   
   
       17 . Dispenser according to  claim 1 , in which the reservoir and the said cap form the moulded parts.  
   
   
       18 . Dispenser according to  claim 1 , in which the said cosmetic product is mascara, and in which the said cap includes a brush as applicator of the said cosmetic product.  
   
   
       19 . The dispenser of  claim 1 , wherein a thermoplastic material comprising EVOH and a second thermoplastic material chosen from among PA, PET, PBT, or an ionomer resin are used to form all or part of a cosmetic product dispenser.  
   
   
       20 . The dispenser of  claim 19 , further comprising a typically fluid to semi-solid cosmetic product with a volatile constituent, selected from the group consisting of mascara, nail varnish, lipstick, cosmetic products in cream, stick or pencil form, intended particularly for makeup of the face or nails.