JPS55114539A - Manufacture of urethane foam having no surface skin - Google Patents
Manufacture of urethane foam having no surface skinInfo
- Publication number
- JPS55114539A JPS55114539A JP2307979A JP2307979A JPS55114539A JP S55114539 A JPS55114539 A JP S55114539A JP 2307979 A JP2307979 A JP 2307979A JP 2307979 A JP2307979 A JP 2307979A JP S55114539 A JPS55114539 A JP S55114539A
- Authority
- JP
- Japan
- Prior art keywords
- water
- urethane foam
- hydrophilic
- mold
- holding
- 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.)
- Pending
Links
Landscapes
- Molding Of Porous Articles (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
PURPOSE: To prevent formation of a hard and smooth surface skin on the surface of urethane foam, by using a hydrophilic or water-holding mold-releasing agent and a hydrophilic or water-holding urethane foam compound containing a large amount of superfluous water.
CONSTITUTION: After forming a film of hydrophilic or water-holding mold-releasing agent 6 on mold surface 4, urethane prepolymer having hydrophilic or water-holding bond and a hydrophilic or water-holding urethane foam compound containing a large amount of superfluous water are subjected to foam molding. Since the surface of urethane foam is held in contact with mold-releasing agent 6, a large amount of condensed water leaching out from urethane foam is absorbed promptly into mold- releasing agent 6, and at the same time, gases such as carbon dioxide gas and steam are also drawn into the agent 6, so that condensed water and bubbles are produced at a high concentration near the surface of urethane foam. Therefore, the surface of urethane foam thus produced is not flat but it remains in a rather rough state, so that surface skin is not formed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307979A JPS55114539A (en) | 1979-02-28 | 1979-02-28 | Manufacture of urethane foam having no surface skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2307979A JPS55114539A (en) | 1979-02-28 | 1979-02-28 | Manufacture of urethane foam having no surface skin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55114539A true JPS55114539A (en) | 1980-09-03 |
Family
ID=12100400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2307979A Pending JPS55114539A (en) | 1979-02-28 | 1979-02-28 | Manufacture of urethane foam having no surface skin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55114539A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122912A (en) * | 1984-03-16 | 1986-01-31 | ザ・デクスター・コーポレーシヨン | Mold release agent and manufacture of polyurethane foam molded shape using said agent |
| JPH01235611A (en) * | 1988-03-17 | 1989-09-20 | Ikeda Bussan Co Ltd | Method for molding sheet pad |
| EP0463420A2 (en) * | 1990-06-23 | 1992-01-02 | Klüber Chemie Kg | Waterborne release agent, containing polyvinyl alcohol, for manufacturing of moulded polyurethane |
-
1979
- 1979-02-28 JP JP2307979A patent/JPS55114539A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6122912A (en) * | 1984-03-16 | 1986-01-31 | ザ・デクスター・コーポレーシヨン | Mold release agent and manufacture of polyurethane foam molded shape using said agent |
| JPH01235611A (en) * | 1988-03-17 | 1989-09-20 | Ikeda Bussan Co Ltd | Method for molding sheet pad |
| EP0463420A2 (en) * | 1990-06-23 | 1992-01-02 | Klüber Chemie Kg | Waterborne release agent, containing polyvinyl alcohol, for manufacturing of moulded polyurethane |
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