JPH0339460U - - Google Patents

Info

Publication number

JPH0339460U

JPH0339460U JP10064389U JP10064389U JPH0339460U JP H0339460 U JPH0339460 U JP H0339460U JP 10064389 U JP10064389 U JP 10064389U JP 10064389 U JP10064389 U JP 10064389U JP H0339460 U JPH0339460 U JP H0339460U

Authority

JP

Japan

Prior art keywords

layer

spring unit

foam

protective layer

cushion

Prior art date

1989-08-29

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

• Espacenet
• Global Dossier
• Discuss

• JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
• 239000010410 layer Substances 0.000 claims 6
• 239000006260 foam Substances 0.000 claims 4
• 239000011241 protective layer Substances 0.000 claims 4
• 239000004619 high density foam Substances 0.000 claims 1
• 239000004620 low density foam Substances 0.000 claims 1
• 229920003002 synthetic resin Polymers 0.000 claims 1
• 239000000057 synthetic resin Substances 0.000 claims 1
• 239000006261 foam material Substances 0.000 description 1
• 238000004519 manufacturing process Methods 0.000 description 1
• 239000000463 material Substances 0.000 description 1
• 230000001681 protective effect Effects 0.000 description 1