JPS54155253A - Gasket for bottle cap - Google Patents
Gasket for bottle capInfo
- Publication number
- JPS54155253A JPS54155253A JP6378078A JP6378078A JPS54155253A JP S54155253 A JPS54155253 A JP S54155253A JP 6378078 A JP6378078 A JP 6378078A JP 6378078 A JP6378078 A JP 6378078A JP S54155253 A JPS54155253 A JP S54155253A
- Authority
- JP
- Japan
- Prior art keywords
- propylene
- gasket
- random copolymer
- butene
- bottle cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To provide a material of gasket for bottle cap, which gives high gas- tightness by lower capping pressure than the one required for the conventional gasket made of a low-density polyethylene, characterized in that said gasket material is composed of a propylene. 1-butene random copolymer having specific propylene content and heat of fusion.
CONSTITUTION: A gasket made of a propylene.1-butene random copolymer having a propylene content of 65W85 mole%, pref. 70W80 mol%, and a heat of fusion of 20W80 joule/g, pref. 30W70 joule/g. The propylene.1-butene random copolymer can be prepared, e.g. by the random copolymerization of propylene and 1-butene in the presence of a catalyst composed of (A) complex containing Mg, Ti and halogen, (B) an organo-metallic compound of a metal belonging to I-III group, and (C) an electron donor.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6378078A JPS54155253A (en) | 1978-05-30 | 1978-05-30 | Gasket for bottle cap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6378078A JPS54155253A (en) | 1978-05-30 | 1978-05-30 | Gasket for bottle cap |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54155253A true JPS54155253A (en) | 1979-12-07 |
JPS6354751B2 JPS6354751B2 (en) | 1988-10-31 |
Family
ID=13239226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6378078A Granted JPS54155253A (en) | 1978-05-30 | 1978-05-30 | Gasket for bottle cap |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54155253A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54158456A (en) * | 1978-06-05 | 1979-12-14 | Mitsui Petrochem Ind Ltd | Packing material of bottle stopper |
DE102018128283A1 (en) * | 2018-07-23 | 2020-01-23 | Silgan White Cap Manufacturing Gmbh | Vascular closure with sealing element |
DE102019131078A1 (en) * | 2019-11-18 | 2021-05-20 | Silgan White Cap Manufacturing Gmbh | Vessel closure with sealing element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02115481A (en) * | 1988-09-28 | 1990-04-27 | Juan Capdevila | Key controlling access and related magnetic lock |
-
1978
- 1978-05-30 JP JP6378078A patent/JPS54155253A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54158456A (en) * | 1978-06-05 | 1979-12-14 | Mitsui Petrochem Ind Ltd | Packing material of bottle stopper |
JPH0255472B2 (en) * | 1978-06-05 | 1990-11-27 | Mitsui Petrochemical Ind | |
DE102018128283A1 (en) * | 2018-07-23 | 2020-01-23 | Silgan White Cap Manufacturing Gmbh | Vascular closure with sealing element |
DE102018128283B4 (en) | 2018-07-23 | 2023-04-27 | Silgan White Cap Manufacturing Gmbh | Vessel closure with sealing element |
DE102019131078A1 (en) * | 2019-11-18 | 2021-05-20 | Silgan White Cap Manufacturing Gmbh | Vessel closure with sealing element |
Also Published As
Publication number | Publication date |
---|---|
JPS6354751B2 (en) | 1988-10-31 |
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