JPH0445846Y2 - - Google Patents

Info

Publication number

JPH0445846Y2

JPH0445846Y2 JP2177887U JP2177887U JPH0445846Y2 JP H0445846 Y2 JPH0445846 Y2 JP H0445846Y2 JP 2177887 U JP2177887 U JP 2177887U JP 2177887 U JP2177887 U JP 2177887U JP H0445846 Y2 JPH0445846 Y2 JP H0445846Y2

Authority

JP

Japan

Prior art keywords

leakage plate

formwork

concrete

lid

manufacturing

Prior art date

1987-02-17

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.)

Expired

Links

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• 238000009415 formwork Methods 0.000 claims description 43
• XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
• 238000004519 manufacturing process Methods 0.000 claims description 25
• 239000013013 elastic material Substances 0.000 claims description 2
• 230000005484 gravity Effects 0.000 description 5
• -1 polypropylene Polymers 0.000 description 5
• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
• 239000004743 Polypropylene Substances 0.000 description 4
• 239000000463 material Substances 0.000 description 4
• 229920001155 polypropylene Polymers 0.000 description 4
• 229920005992 thermoplastic resin Polymers 0.000 description 4
• 238000005452 bending Methods 0.000 description 3
• 235000012489 doughnuts Nutrition 0.000 description 3
• 229910000906 Bronze Inorganic materials 0.000 description 2
• OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
• 239000010974 bronze Substances 0.000 description 2
• KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
• 238000002347 injection Methods 0.000 description 2
• 239000007924 injection Substances 0.000 description 2
• 229910052742 iron Inorganic materials 0.000 description 2
• 239000002184 metal Substances 0.000 description 2
• 229910052751 metal Inorganic materials 0.000 description 2
• 230000002265 prevention Effects 0.000 description 2
• 230000003014 reinforcing effect Effects 0.000 description 2
• 239000004698 Polyethylene Substances 0.000 description 1
• 230000006866 deterioration Effects 0.000 description 1
• 230000000694 effects Effects 0.000 description 1
• 238000001125 extrusion Methods 0.000 description 1
• 238000010438 heat treatment Methods 0.000 description 1
• 238000003780 insertion Methods 0.000 description 1
• 230000037431 insertion Effects 0.000 description 1
• 239000007769 metal material Substances 0.000 description 1
• 238000012986 modification Methods 0.000 description 1
• 230000004048 modification Effects 0.000 description 1
• 239000006082 mold release agent Substances 0.000 description 1
• 229920000573 polyethylene Polymers 0.000 description 1
• 238000002360 preparation method Methods 0.000 description 1
• 238000003825 pressing Methods 0.000 description 1
• 239000002002 slurry Substances 0.000 description 1