Vial and method for producing the same

Patent metadata

Field	Value
Publication number	US-9580349-B2
Application number	US-201313846444-A
Country	US
Kind code	B2
Filing date	Mar 18, 2013
Priority date	May 16, 2005
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A method for producing a vial with low alkali elution by removing a deteriorated region caused by processing on an internal surface of a vial is disclosed. The method is for forming vials from borosilicate glass tubes, which includes a first step of forming a mouth of the vial; a second step of forming the borosilicate glass tube into a cup-shaped body to form a bottom of a vial; and a third step of fire-blasting an internal surface of the cup-shaped body with a flame.

First claim

The invention claimed is:

1. A method for producing a vial by forming a vial from a borosilicate glass tube, wherein low alkali elution of the vial is lowered by
a first step of forming a mouth of the vial,
a second step of forming a bottom of the vial, and
a third step of fire-blasting an internal surface of the vial from said bottom toward said mouth by a certain length with a flame to remove a deteriorated region caused by processing borosilicate glass;
wherein fire-blasting is shot-blasting using particle ions and molecules in the flame.

2. The method according to claim 1 wherein said fire-blasting is carried out from the bottom of a cup-shaped body of the vial toward the mouth by a certain length with the flame.

3. The method according to claim 2 wherein said flame is a gas-and-oxygen flame produced by a point burner.

4. The method according to claim 3 wherein said fire-blasting is carried out while rotating the vial.

5. The method according to claim 2 wherein said fire-blasting is carried out while rotating the vial.

6. The method according to claim 1 wherein said flame is a gas-and-oxygen flame produced by a point burner.

7. The method according to claim 6 wherein said fire-blasting is carried out while rotating the vial.

8. The method according to claim 1 wherein said fire-blasting is carried out while rotating the vial.

Assignees

• Nipro Corp

Inventors

• Kuwabara Hideo
• Yamauchi Hideki
• Ishimi Yoshitaka
• Senga Shinichiro

Classifications

• C03B23/099

  by fusing, e.g. flame sealing · CPC title

• C03B23/006

  by fusing, e.g. for flame sealing (C03B9/42, C03B21/06, C03B23/02, C03B23/04, C03B23/18, C03B33/08 take precedence) · CPC title

• A61J1/14

  Details; Accessories therefor (A61J7/00 takes precedence; openers B65D, B67B7/00) · CPC title

• C03B23/0093

  Tools and machines specially adapted for re-forming shaped glass articles in general, e.g. chucks (C03B23/0086, C03B23/02, C03B23/04, C03B23/18 take precedence) · CPC title

• C03C23/007

  by thermal treatment · CPC title