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Preform for plastics material bottles or wide-necked vessels

Inactive Publication Date: 2010-12-02
ALPLA WERKE ALWIN LEHNER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0021]Plastics material bottles and wide-necked vessels made from the preforms embodied in accordance with the invention are distinguished by high mechanical strengths and high thermal stability. F

Problems solved by technology

During the manufacture of preforms of this type by injection moulding, the sudden change in wall thickness can lead to problems.
In particular, there can occur at the transition from the wall thickness of the body to the greater wall thickness of the bottom portion during the injection moulding method local temperature peaks which impair the properties of the plastics material.
I

Method used

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  • Preform for plastics material bottles or wide-necked vessels
  • Preform for plastics material bottles or wide-necked vessels
  • Preform for plastics material bottles or wide-necked vessels

Examples

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Embodiment Construction

[0028]The preform illustrated in FIG. 1 is denoted in its entirety by reference numeral 1. It has a rigid, substantially elongate, frustoconically embodied body portion 2, one longitudinal end of which is closed by a dome-shaped end portion 3. The other longitudinal end of the body 2 is adjoined in the first place by what is known as a preform collar 8 which forms the transition of the body portion 2 to a neck portion 4 comprising a pouring opening 5. The neck portion 4 conventionally already displays the subsequent shape of the neck of the inflated plastics material bottle or a wide-necked vessel. Threaded portions 6 or the like are formed on the outside of the neck portion 4 for securing a closure part. The preform 1 is manufactured for example in an injection moulding method. Alternative manufacturing methods are for example extrusion or, with appropriate raw materials, spray foaming.

[0029]The preform collar 8 is separated from the neck portion 4 by an annularly encircling transp...

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Abstract

A preform for manufacturing plastics material bottles or wide-necked vessels is described, having a rigid, substantially elongate, frustoconical body portion that is closed at one of its longitudinal ends by a dome-shaped end portion and at its opposite longitudinal end adjoins via a preform collar a neck portion provided with a pouring opening. The preform possesses in the body portion an external diameter that is reduced from the preform collar to the end portion. The body portion has a wall thickness which changes over its longitudinal extension substantially constantly by up to +2 mm. For this purpose, it possesses an internal diameter which decreases substantially constantly from a transition to the preform collar up to a transition to the dome-shaped end portion.

Description

CROSS-REFERENCE TO PRIORITY APPLICATION[0001]This application claims priority to U.S. Provisional Patent Application Ser. No. 61 / 181,242 filed on May 26, 2009, the entirety of which is incorporated by reference.BACKGROUND[0002]1. Field of the Invention[0003]The invention relates generally to a preform for plastics material bottles or wide-necked vessels, and more specifically to a perform having a rigid, substantially elongate, frustoconical body portion that is closed at one of its longitudinal ends by a dome-shaped end portion and at its opposite longitudinal end adjoins, via a preform collar, a neck portion provided with a pouring opening and has an external diameter that is reduced from the preform collar to the end portion.[0004]2. State of the Art[0005]The previously conventional containers made of white or coloured sheet metal, of glass or else of ceramic are increasingly being superseded by containers made of plastics material. In particular for the packaging of pourable med...

Claims

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Application Information

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IPC IPC(8): B65D23/00
CPCB29B11/08B29B11/10B29B11/14B29B2911/1402B29B2911/14026B29B2911/14033B29B2911/1404B29B2911/14106B29B2911/14133B29B2911/1416B29B2911/1424B29B2911/14326B29B2911/14333B29B2911/1444B29B2911/1448B29B2911/14633B29B2911/1464B29B2911/14693B29B2911/1482B29C49/06B29K2023/065B29K2023/12B29K2025/06B29K2067/00B29K2067/003B29K2067/006B29K2067/046B29C2949/3024B29C2949/26B29C2949/28B29C2949/24B29C2949/22B29C2949/3032B29C2949/3041B29C2949/3064B29C2949/073B29C2949/0779B29C2949/072B29C2949/0773B29C2949/0818B29C2949/0817B29C2949/0826B29C2949/0845B29C49/071B29C2949/0715
Inventor DORNBACH, CHRISTIAN
Owner ALPLA WERKE ALWIN LEHNER
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