JPS61202781U - - Google Patents

Info

Publication number

JPS61202781U

JPS61202781U JP8772985U JP8772985U JPS61202781U JP S61202781 U JPS61202781 U JP S61202781U JP 8772985 U JP8772985 U JP 8772985U JP 8772985 U JP8772985 U JP 8772985U JP S61202781 U JPS61202781 U JP S61202781U

Authority

JP

Japan

Prior art keywords

heat

outside

resistant composite

insulating layer

pipe

Prior art date

1985-06-11

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.)

Granted

Links

• Espacenet
• Global Dossier
• Discuss

• 239000002131 composite material Substances 0.000 claims description 3
• 229920003023 plastic Polymers 0.000 claims description 3
• 239000004033 plastic Substances 0.000 claims description 3
• 239000004743 Polypropylene Substances 0.000 claims 1
• 229920002457 flexible plastic Polymers 0.000 claims 1
• 239000006260 foam Substances 0.000 claims 1
• 238000005187 foaming Methods 0.000 claims 1
• -1 polypropylene Polymers 0.000 claims 1
• 229920001155 polypropylene Polymers 0.000 claims 1
• 230000003014 reinforcing effect Effects 0.000 claims 1
• 230000002787 reinforcement Effects 0.000 description 3
• 238000010586 diagram Methods 0.000 description 1
• 238000009413 insulation Methods 0.000 description 1