JPH0479819B2 - - Google Patents
Info
- Publication number
- JPH0479819B2 JPH0479819B2 JP63170653A JP17065388A JPH0479819B2 JP H0479819 B2 JPH0479819 B2 JP H0479819B2 JP 63170653 A JP63170653 A JP 63170653A JP 17065388 A JP17065388 A JP 17065388A JP H0479819 B2 JPH0479819 B2 JP H0479819B2
- Authority
- JP
- Japan
- Prior art keywords
- duct
- inner layer
- synthetic resin
- outer layer
- layer
- 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.)
- Expired - Lifetime
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 19
- 239000000057 synthetic resin Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000000071 blow moulding Methods 0.000 claims description 11
- 239000004604 Blowing Agent Substances 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 229920013716 polyethylene resin Polymers 0.000 description 7
- -1 polyethylene terephthalate Polymers 0.000 description 6
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229920006026 co-polymeric resin Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000004156 Azodicarbonamide Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 2
- 235000019399 azodicarbonamide Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920005676 ethylene-propylene block copolymer Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002832 nitroso derivatives Chemical class 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63170653A JPH0220322A (ja) | 1988-07-08 | 1988-07-08 | ダクトの製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63170653A JPH0220322A (ja) | 1988-07-08 | 1988-07-08 | ダクトの製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0220322A JPH0220322A (ja) | 1990-01-23 |
| JPH0479819B2 true JPH0479819B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1992-12-17 |
Family
ID=15908871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63170653A Granted JPH0220322A (ja) | 1988-07-08 | 1988-07-08 | ダクトの製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0220322A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2754862B2 (ja) * | 1990-04-27 | 1998-05-20 | 松下電器産業株式会社 | 送風機羽根車 |
| JP2560267Y2 (ja) * | 1991-11-22 | 1998-01-21 | 新明和工業株式会社 | 吸込消音器 |
| JP2002274153A (ja) * | 2001-03-16 | 2002-09-25 | Denso Corp | 車両用空調装置 |
-
1988
- 1988-07-08 JP JP63170653A patent/JPH0220322A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0220322A (ja) | 1990-01-23 |