Annular sustained release preparation and production method thereof

Patent metadata

Field	Value
Publication number	US-10117426-B2
Application number	US-201113634734-A
Country	US
Kind code	B2
Filing date	Mar 22, 2011
Priority date	Mar 24, 2010
Publication date	Nov 6, 2018
Grant date	Nov 6, 2018

Abstract

Provided is an annular sustained release preparation having at least two polymer tubes having both ends sealed and integrated by pressure-welding or at least one polymer tube and at least one polymer rod having both ends sealed and integrated by pressure-welding; and a sex pheromone liquid contained by at least one of the tubes or the tube; wherein an annular space can be formed by pulling the tubes or the tube and the rod apart from each other at a center portion therebetween, the central portion not having been pressure-welded; and an angle formed between a line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other and the pressure application direction is from 0 to 45°.

First claim

The invention claimed is:

1. An annular sustained release preparation comprising:
at least two polymer tubes having both ends sealed and integrated by pressure-welding, or at least one polymer tube and at least one polymer rod sealed and integrated at both ends by pressure-welding; and
a sex pheromone liquid contained by at least one of the tubes or the tube;
wherein an annular space can be formed by pulling the tubes or the tube and the rod apart from each other at a center portion therebetween, the center portion not having been pressure-welded; and an angle formed between 1) a line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other and 2) a direction of pressure applied by a pressure-welder for the pressure-welding is from 0 to 45° with respect to the line connecting respective centers of diameters of the tubes welded to each other or the tube and the rod welded to each other.

2. The annular sustained release preparation according to claim 1 , wherein the angle is 0°.

3. The annular sustained release preparation according to claim 1 , wherein at least one of said at least two polymer tubes comprises a metal wire therein.

Assignees

• Saguchi Ryuichi
• Fukumoto Takehiko
• Shinetsu Chemical Co

Inventors

• Saguchi Ryuichi
• Fukumoto Takehiko

Classifications

• A01M1/2044 Primary

  Holders or dispensers for liquid insecticide, e.g. using wicks · CPC title

• A01M13/00

  Fumigators; Apparatus for distributing gases {(poisoning or narcotising insects by vaporising an insecticide A01M1/2022)} · CPC title

• A01N25/34 Primary

  Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group · CPC title

• A01M29/12

  using odoriferous substances, e.g. aromas, pheromones or chemical agents · CPC title

• A01N25/26

  in coated particulate form · CPC title