Method for producing compressed body of powder

Patent metadata

Field	Value
Publication number	US-12389922-B2
Application number	US-202017436328-A
Country	US
Kind code	B2
Filing date	Mar 4, 2020
Priority date	Mar 4, 2019
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

Provided is a method for producing a compressed body of a powder capable of improving a hardness while suppressing a decrease in production efficiency of the compressed body of the powder. A compressed body 14 of a powder is compression molded by compressing a powder supplied into die holes 18 by a lower punch 31 and an upper punch 32 . In the compression molding, a first compression and a second compression following the first compression are performed. In the first compression, the compression is performed at a first compression speed, and in the second compression, the compression is performed at a second compression speed that is lower than the first compression speed.

First claim

The invention claimed is:

1. A method for producing a compressed body of a powdered milk having a solid form obtained by compression molding the powdered milk, the method comprising:
a first compression step of compressing the powdered milk at a first compression speed V 1 ; and
a second compression step of compressing the compressed body of the powdered milk compressed in the first compression step at a second compression speed V 2 that is lower than the first compression speed until the compressed body of the powdered milk has a final thickness L in a predetermined compression state corresponding to a target thickness of the compressed body of the powdered milk from a state of being compressed in the first compression step,
wherein a compression speed ratio V 1 /V 2 is 5 or more; and
the second compression step is performed following the first compression step without releasing a compression.

2. A method for producing a compressed body of a powdered milk having a solid form obtained by compression molding the powdered milk, the method comprising:
a first compression step of compressing the powdered milk at a first compression speed V 1 ; and
a second compression step of compressing the compressed body of the powdered milk compressed in the first compression step at a second compression speed V 2 that is lower than the first compression speed until the compressed body of the powdered milk has a final thickness L in a predetermined compression state corresponding to a target thickness of the compressed body of the powdered milk from a state of L 2 +L being compressed in the first compression step,
wherein in the second compression step, a combination of a compression distance L 2 from the state L 2 +L of being compressed in the first compression step to the final thickness L and the second compression speed V 2 is set so that the compressed body of the powdered milk is compressed to a hardness specific point at which a rate of change in a hardness of a compressed body relative to change in the compression distance L 2 decreases.

3. The method for producing a compressed body of a powdered milk according to claim 2 ,
wherein the second compression step is performed following the first compression step without releasing a compression.

Assignees

• Meiji Co Ltd

Inventors

• Hanyu Keigo
• Kamiya Tetsu

Classifications

• B30B11/027

  Particular press methods or systems · CPC title

• B30B11/005

  Control arrangements · CPC title

• A23P10/28

  Tabletting; Making food bars by compression of a dry powdered mixture · CPC title

• A23C9/18 Primary

  Milk in dried and compressed or semi-solid form · CPC title

• B30B11/14 Primary

  co-operating with moulds on a movable carrier other than a turntable or a rotating drum · CPC title