An injection-moulding machine has been developed that uses a seal on the stem of the valve pin to prevent leakage of molten material.
โฆ LIBER โฆ
Joint seal
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 160 KB
- Volume
- 2008
- Category
- Article
- ISSN
- 1350-4789
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โฆ Synopsis
A thermoplastic elastomer material for the manufacture of seals in pharmaceutical dispensing devices is described. It is formed from a blend including a propylene component with isotactic crystallinity; and one or more polymer of polypropylene, polyethylene or their copolymers.
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This patent describes a gasket or grommet type device that may be used for sealing an opening in components such as a cylinder head cover where a tube passes through. To avoid damage on assembly the outside diameter is similar to or less than the diameter of the hole. Provision is made for radial ex