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US 9,751,654 B2Granted
Thermoplastic containers with improved aesthetics
AssigneeThe Procter & Gamble Company
InventorsPing Wang, Liang Yang, Chunfang Song
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Abstract
A thermoplastic material and an additive that has a relatively low surface tension, allows for blow molding processing conditions that provides containers with a smooth exterior surfaces to enhance aesthetics.
Claims12
A blow molding process of making a container, comprising the steps of:
- a) affixing a precursor container form into a blow molding mold, wherein said precursor container form is a parison or preform,
- i) wherein said precursor container form comprises a layer, wherein said layer comprises:
- 1) from about 86% to about 99.99%, by weight of said layer, of a thermoplastic material selected from the group consisting of polyethylene (PE), polypropylene (PP), and a combination thereof;
- and
- 2) from about 0.01% to about 5%, by weight of said layer, of an additive, wherein said additive has a Surface Tension Value of from about 0.1 to about 50 m*N/m;
- and
- ii) wherein said mold comprises an inner surface configured to receive the expandable precursor container form, wherein at least a portion of said mold has a SPI finish standard selected from the group consisting of A-1, A-2, A-3, B-1, B-2, and B -3;
- and
- b) blowing into said precursor container form as to expand said precursor container form against said inner surface of said mold thereby forming the container.
6 more elements
Dependencies are inferred from the claim text.