Thermoformed Article
AssigneeObrist Closures Switzerland GmbH
InventorsPatrick Schmidt, Dirk Puderbach
Life of this patent
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Abstract
A thermoformed article having two or more parts (125, 130) is provided. A first part is formed from a first thermoplastic material and a second part (130) is formed from a second thermoplastic material. The first and second materials are mutually incompatible. One of the parts (130) has one or more projections (131) and the other part (125) has one or more corresponding cavities (126a) into which the projections are formed. In which the mouth of the or each cavity is narrower than at least part of the or each projection such that the shape of the or each projection allows withdrawal from but resists reinsertion into the or each cavity.
Claims24
1-19. (canceled)
A thermoformed article having two or more parts, a first part being formed from a first thermoplastic material and a second part being formed from a second thermoplastic material, the first and second materials being mutually incompatible, wherein the first part comprises an orifice and the second part comprises a panel formed to cover the orifice, such that in use, the panel can be removed to reveal the orifice and cannot be replaced.
A method of forming a closure having two or more parts, comprising:
- forming a first part of the closure in a first injection moulding step using a first thermoplastic material, the first part comprising an orifice;
- forming a second part of the closure in a second injection moulding step using a second thermoplastic material, the first and second materials being mutually incompatible, the second part comprising a panel and being formed to cover the orifice in the first part, such that in use, the panel can be removed to reveal the orifice and cannot be replaced.
A thermoformed closure comprising two or more parts in which a first part is formed from a first thermoplastic material and a second part is formed from a second thermoplastic material, wherein the first and second materials are mutually incompatible and one of the materials comprises a styrenic block copolymer-based thermoplastic elastomer, wherein the first part comprises an orifice and the second part comprises a panel formed to cover the orifice, such that in use, the panel can be removed to reveal the orifice and cannot be replaced.
Dependencies are inferred from the claim text.