Lubricious compositions and articles made therefrom
View Patent ↗The present disclosure provides a lubricious polymeric composition that includes polymer and one or more lubricants. Articles formed from the lubricious polymeric composition possess enhanced softness, flexibility and lubricity. The present disclosure also provides a method for making an article formed from a lubricious polymeric composition having polymer and one or more lubricants.
1. An injection molded article comprising a lubricious polymeric composition, said lubricious polymeric composition consisting essentially of:
a combination of low density polyethylene and high density polyethylene; and
a lubricant selected from the group consisting of erucamide, stearyl erucamide, bis-erucamide, and any combination thereof,
wherein said combination of low density polyethylene and high density polyethylene is present in an amount of about 80 wt % to about 99 wt % of the total weight of said polymeric composition,
wherein the injection molded article is a barrel of a tampon applicator.
2. The injection molded article of claim 1 , wherein said one or more lubricants are present in an amount about 0.001 wt % to about 40 wt %, based on the total weight of said polymeric composition.
3. The injection molded article of claim 1 , wherein said one or more lubricants are present in an amount about 0.01 wt % to about 20 wt %, based on the total weight of said polymeric composition.
4. The injection molded article of claim 1 , wherein said one or more lubricants are present in an amount about 0.1 wt % to about 1 wt %, based on the total weight of said polymeric composition.
5. The injection molded article of claim 1 , wherein said one or more lubricants are present in an amount about 0.12 wt % to about 0.55 wt %, based on the total weight of said polymeric composition.
6. The injection molded article of claim 1 , wherein said polymeric composition further comprises one or more components selected from the group consisting of thermoplastic elastomer, plasticizer, compatibilizer/flow modifier, pigment, antioxidant, antistatic agent, filler, reinforcement, dye, mineral, pearlescent, surfactant, light/UV stabilizer, thermal stabilizer, impact modifier, processing aid, extender, flame retardant, biocide, fungicide, antiozonant, blowing agent, foaming agent, and any combinations thereof.
7. The injection molded article of claim 6 , wherein said one or more components are one or more pigments and pearlescents selected from the group consisting of titanium dioxide, mica, colorant, carbon black, phthalate ester, quinacridone red, phthalo (GS) blue phthalate esters, lead chromate, inorganic aluminosilicate, cadmium sulfoselenide, cadmium sulfide, barium sulfate, and any combinations thereof.
8. The injection molded article of claim 7 , wherein said one or more pigments and pearlescents are present in an amount about 0.01 wt % to about 5 wt %, based on the total weight of said polymeric composition.
9. The injection molded article of claim 8 , wherein said one or more pigments and pearlescents are present in an amount about 0.5 wt % to about 1.2 wt % based on the total weight of said polymeric composition.
10. The injection molded article of claim 1 , wherein said composition further comprises one or more antistatic agents.
11. The injection molded article of claim 1 , wherein said composition excludes an antistatic agent.
12. The injection molded article of claim 1 , wherein a force of less than about 21 ounces is required to eject a pledget from said barrel.
13. The injection molded article of claim 1 , wherein said barrel and a pledget disposed therein have a normalized coefficient of friction therebetween that is about 5% to about 20% less than a normalized coefficient of friction of a barrel formed from a composition without one or more lubricants.
14. A tampon applicator barrel formed from a polymeric composition comprising about 98 wt % to about 99 wt % LDPE, about 0.6 wt % mica, about 0.5 wt % titanium dioxide, about 0.25 wt % erucamide, and less than about 0.01 wt % colorant.
15. A tampon applicator plunger formed from a polymeric composition comprising about 92 wt % to about 93 wt % HDPE, about 5 wt % LDPE, about 0.9 wt % mica, about 0.75 wt % titanium dioxide, about 0.37 wt % erucamide, and less than about 0.01 wt % colorant.