JPH02175225A - Manufacture of hollow body made of plastic - Google Patents
Manufacture of hollow body made of plasticInfo
- Publication number
- JPH02175225A JPH02175225A JP63329403A JP32940388A JPH02175225A JP H02175225 A JPH02175225 A JP H02175225A JP 63329403 A JP63329403 A JP 63329403A JP 32940388 A JP32940388 A JP 32940388A JP H02175225 A JPH02175225 A JP H02175225A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- hollow body
- blow molding
- plastic
- screening
- 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.)
- Granted
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 16
- 229920003023 plastic Polymers 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000000071 blow moulding Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004378 air conditioning Methods 0.000 abstract description 14
- 239000006260 foam Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000002984 plastic foam Substances 0.000 abstract description 2
- 238000012216 screening Methods 0.000 abstract 5
- 238000010276 construction Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/4247—Means for deforming the parison prior to the blowing operation using spreading or extending means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2404—Lining or labelling inside the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C49/251—Lining or labelling explicit lining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4242—Means for deforming the parison prior to the blowing operation
- B29C49/4247—Means for deforming the parison prior to the blowing operation using spreading or extending means
- B29C49/425—Means for deforming the parison prior to the blowing operation using spreading or extending means rods or bars entering the preform
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/004—Bent tubes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、空調用ダクト、パネル等のように熱、音、振
動、Ｎ、ｌｉ１波等の遮蔽性が要求されるプラスチック
製中空体をブロー成形によって製造する方２人に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to plastic hollow bodies that require shielding properties against heat, sound, vibration, N, Li1 waves, etc., such as air conditioning ducts and panels. This relates to two people manufacturing by blow molding.
〔従来の技術］
（に来、空調用のダクトであって、外面に発泡ブ種用途
に供するものが７口られている。[Prior Art] (Nowadays, an air-conditioning duct has seven ports on its outer surface for use in foaming.
［発明が解決しようとする課題］
一般に、各種空調用ダクトにおいては、外面層が剛性で
あることが十分な強度を保持するうえて望ましく、また
、取付部を一体に形成するうえからも望ましい。[Problems to be Solved by the Invention] Generally, in various air conditioning ducts, it is desirable that the outer layer is rigid in order to maintain sufficient strength, and also in terms of integrally forming the mounting portion.
ところが、前記のように、従来の空調用ダクトでは、外
面に発泡性の遮蔽層を有するので、取付部等の剛性部分
を一体に形成することができないものであった。However, as described above, the conventional air conditioning duct has a foam shielding layer on the outer surface, so that rigid parts such as the mounting part cannot be integrally formed.
本発明は、このような従来のものの欠点を解消し、外面
層が剛性て、しかも内面に遮蔽層を’ＳＥＮした熱、音
、振動、電磁波等の遮蔽性の高いプラスチック製中空体
をブロー成形によって製造する方法を提供するものであ
って、この方法によって、全体として強度が大であり、
しかも、外面に取付部等の剛性部分を一体に成形するこ
とができるよラスチックの遮蔽層を有するものは、実開
昭６３うにしたものである。The present invention overcomes the drawbacks of the conventional products by blow molding a plastic hollow body with a rigid outer layer and a shielding layer on the inner surface, which has high shielding properties against heat, sound, vibration, electromagnetic waves, etc. This method provides a method for producing a material with high strength as a whole.
Moreover, a device having a plastic shielding layer on the outer surface so that rigid parts such as a mounting portion can be integrally molded was developed in 1983.
［ｒ４題を解決するための手段］
本発明は、上記目的を達成するため、次の１！遣方法を
提案するものである。[Means for solving the r4 problem] In order to achieve the above object, the present invention accomplishes the following 1! This paper proposes a method for sending the information.
すなＩ）ち、それは、一部に遮蔽材を何するプラスチッ
ク製中空体をブロー成形によって製造する方法であって
、ブロー成形時にパリスン内に遮蔽材を挿入して中空体
の内壁に密着一体化することを特徴とするプラスチック
製中空体の製造方法である。In other words, it is a method of manufacturing a plastic hollow body with a shielding material in a part by blow molding, and during blow molding, the shielding material is inserted into the parison and tightly attached to the inner wall of the hollow body. This is a method for manufacturing a hollow plastic body, characterized by the following steps:
［作 用 ］
本発明に係るプラスチック製中空体の製造方法によれば
、ブロー成形時にパリスン内に遮蔽材を挿入するので、
その遮蔽材はパリスンの内面に密着し、かつ一体化され
ろ。[Function] According to the method for manufacturing a plastic hollow body according to the present invention, since a shielding material is inserted into the parison during blow molding,
The shielding material should adhere to and be integrated with the inner surface of the parison.
［実 施 例 ］
本発明に係るプラスチック製中空体の製造方法を、図面
に示した実施例について説明する。[Example] The method for manufacturing a plastic hollow body according to the present invention will be described with reference to an example shown in the drawings.
第１図には、本発明に係る製造方法によって成形された
プラスチック製中空体であって、空調用ダイ）１が例示
されている。この空調用ダクトｌはプラスチックをブロ
ー成形して製造されたものであって、外面２は剛性を有
し、内面には発泡プラスチ・ンクの遮蔽層３が密着一体
化されている。FIG. 1 shows an example of an air conditioning die 1, which is a plastic hollow body molded by the manufacturing method according to the present invention. This air conditioning duct 1 is manufactured by blow molding plastic, has a rigid outer surface 2, and has a shielding layer 3 of foamed plastic closely integrated with the inner surface.
４は取付部であって、この取付部４は外面２と一体に成
形されている。Reference numeral 4 denotes a mounting portion, and this mounting portion 4 is molded integrally with the outer surface 2.
第２図ないし第５図には、上記空調用ダクト１をブロー
成形する工程が順に示されている。2 to 5 sequentially show the steps of blow molding the air conditioning duct 1.
すなわち、５，５は一対の分割金型であって、その内部
にはダクト１を形成するキャビティ６および取付部４を
形成する取付部キャビティ７を有している。That is, 5 and 5 are a pair of split molds, and have a cavity 6 forming the duct 1 and a mounting part cavity 7 forming the mounting part 4 inside thereof.
空調用ダクト１のブロー成形にあたっては、ダイ８から
押し出したパリスン９を一対の分割金型５．５間に配置
し、４本の拡開棒１０によってパリスン９を拡関し、バ
リメン９内に遮蔽材である発泡プラスチックの発泡体１
１を加熱軟化状態で挿入する。そして、一対の分割金型
５．５を閉して、バリメン９内に加圧流体を吹き込み、
ブロー成形すれは、第１図に示すように、発泡体１１が
延ばされ、内面に遮１５ｉ！’１３が密着一体化された
空調用ダクト１が得られる。なお、成形された空調用ダ
イ）１のピンチオフ部Ｐでは遮蔽層３の発泡構造が圧縮
され、一体に溶着される。When blow molding the air conditioning duct 1, the parison 9 extruded from the die 8 is placed between a pair of split molds 5.5, and the parison 9 is expanded using four expansion rods 10 to be shielded inside the variable member 9. Foamed plastic foam 1
1 is inserted in a heated and softened state. Then, the pair of split molds 5.5 are closed, and pressurized fluid is blown into the bariumen 9.
As shown in FIG. 1, the blow molding area is formed by elongating the foam 11 and blocking the inner surface with a shield 15i! An air conditioning duct 1 in which the '13 is closely integrated is obtained. The foamed structure of the shielding layer 3 is compressed at the pinch-off portion P of the molded air conditioning die 1 and welded together.
第６図および第７図には、他の実施例として、空調用ダ
イ）ｌの内面の一部、すなわち、一対の広い面に発泡体
１１の遮蔽層３′を密着一体化したもののブロー成形態
様が示されている。この実施例においては、一対の分割
金型５．５内に配置されたパリスン９を拡開するのに一
対の拡開治具１２が用いられる。この一対の拡開治具１
２は空！ｌｌｌ用ダクトｌの一対の快い而に対応するも
のである。FIGS. 6 and 7 show blow molding of a part of the inner surface of an air-conditioning die (l), in which a shielding layer 3' of a foam 11 is closely integrated with a pair of wide surfaces, as another example. Aspects are shown. In this embodiment, a pair of expansion jigs 12 are used to expand the parisons 9 placed within the pair of split molds 5.5. This pair of expansion jigs 1
2 is empty! This corresponds to the pair of ducts l for lll.
以上のように構成される空調用ダクト１は、ポリエチレ
ン、ポリプロピレン等の熱可塑性プラスチックが用いら
れ、発泡体＋１は１．２〜８０倍の発泡倍率のプラスチ
ックである。なお、発泡体１１に代＾て天然繊維、半合
成ｗＩ碓、合成繊維およびこれらのブレンド繊維からな
る織物、編物、不織布等の遮蔽材であってもよい。The air conditioning duct 1 configured as described above is made of thermoplastic plastic such as polyethylene or polypropylene, and the foam +1 is a plastic with an expansion ratio of 1.2 to 80 times. Note that instead of the foam 11, a shielding material such as a woven fabric, knitted fabric, or nonwoven fabric made of natural fibers, semi-synthetic fibers, synthetic fibers, or blended fibers thereof may be used.
［発明の効果］
本発明は、＠記のように、一部に遮蔽材を有するプラス
チック製中空体をブロー成形によって製造する方法であ
って、ブロー成形時にパリスン内に遮蔽材を挿入して中
空体の内壁に密着一体化する製造方法であるから、外面
層が剛性で、しかも内面に遮蔽層を密着した熱、音、振
動、電磁波等の遮蔽性の高いプラスチック製中空体をブ
ロー成形によって製造することができ、この方法によっ
て、全体として強度が大であり、しかも、外面に取付部
等の剛性部分を一体に成形することができる。[Effects of the Invention] As described in @, the present invention is a method of manufacturing a plastic hollow body having a shielding material in a part by blow molding, in which the shielding material is inserted into the parison during blow molding, and the hollow body is Since this manufacturing method is closely integrated with the inner wall of the body, a hollow plastic body with a rigid outer layer and a shielding layer tightly attached to the inner surface with high shielding properties against heat, sound, vibration, electromagnetic waves, etc. is manufactured by blow molding. By this method, the overall strength can be increased, and rigid parts such as attachment parts can be integrally formed on the outer surface.
第１図は本発明に係る方法によって製造された空調用ダ
クトの一部を示す斜視図、第２図、第３図、第４図およ
び第５図は本発明に係る方法の一実施例のブロー成形工
程を示し、第２図は縦断正面図、第３図は第２図におけ
る八−Ａ線断面図、第４図は同上パリメンを拡開した状
態を示す横断面図、第５図は同上型閉め状態を示す横断
面図、第６図および第７図は他の実施例のブロー成形工
程を示す断面図であって、第６図は型を閉める萌の状態
を示す横断面図、第７図は同上型を閉めた状態を示す横
断面図である。FIG. 1 is a perspective view showing a part of an air conditioning duct manufactured by the method according to the present invention, and FIGS. 2, 3, 4, and 5 show an example of the method according to the present invention. The blow molding process is shown, and FIG. 2 is a longitudinal sectional front view, FIG. 3 is a sectional view taken along the line 8-A in FIG. 2, FIG. 6 and 7 are cross-sectional views showing the blow molding process of another embodiment; FIG. 6 is a cross-sectional view showing the mold closing state; FIG. 7 is a cross-sectional view showing the mold in a closed state.
Claims (1)
成形によって製造する方法であつて、ブロー成形時にパ
リスン内に遮蔽材を挿入して中空体の内壁に密着一体化
することを特徴とするプラスチック製中空体の製造方法
。A method of manufacturing a plastic hollow body having a shielding material in a part thereof by blow molding, the method comprising inserting the shielding material into the parison during blow molding and closely integrating the shielding material with the inner wall of the hollow body. Method for manufacturing hollow bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63329403A JPH0661827B2 (en) | 1988-12-28 | 1988-12-28 | Method for manufacturing plastic hollow body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63329403A JPH0661827B2 (en) | 1988-12-28 | 1988-12-28 | Method for manufacturing plastic hollow body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02175225A true JPH02175225A (en) | 1990-07-06 |
| JPH0661827B2 JPH0661827B2 (en) | 1994-08-17 |
Family
ID=18221038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63329403A Expired - Fee Related JPH0661827B2 (en) | 1988-12-28 | 1988-12-28 | Method for manufacturing plastic hollow body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0661827B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609803A (en) * | 1991-11-13 | 1997-03-11 | Centro Sviluppo Settori Impiego S.R.1. | Process for manufacturing bodies of polymeric material, having a core of foamed material enclosed in an outer shell |
| EP1612031A1 (en) * | 2004-07-01 | 2006-01-04 | SIG Kautex GmbH & Co. KG | Method and apparatus for manufacturing hollow plastic articles |
| JP2010194785A (en) * | 2009-02-24 | 2010-09-09 | Nippon Plast Co Ltd | Hollow molding |
| JP2011021592A (en) * | 2009-06-17 | 2011-02-03 | Aitec:Kk | Vent tube and method of manufacturing the same |
| JP2020197315A (en) * | 2019-05-31 | 2020-12-10 | キョーラク株式会社 | Duct and method for manufacturing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104553683B (en) * | 2014-11-21 | 2017-01-04 | 上海钟华汽车阻尼材料有限公司 | A kind of manufacture method of automotive ventilation pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63309434A (en) * | 1987-06-12 | 1988-12-16 | Ekuseru Kk | Hollow molding obtained by bursting foamed cell on inner circumferential surface, its manufacture and device |
-
1988
- 1988-12-28 JP JP63329403A patent/JPH0661827B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63309434A (en) * | 1987-06-12 | 1988-12-16 | Ekuseru Kk | Hollow molding obtained by bursting foamed cell on inner circumferential surface, its manufacture and device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609803A (en) * | 1991-11-13 | 1997-03-11 | Centro Sviluppo Settori Impiego S.R.1. | Process for manufacturing bodies of polymeric material, having a core of foamed material enclosed in an outer shell |
| EP1612031A1 (en) * | 2004-07-01 | 2006-01-04 | SIG Kautex GmbH & Co. KG | Method and apparatus for manufacturing hollow plastic articles |
| JP2010194785A (en) * | 2009-02-24 | 2010-09-09 | Nippon Plast Co Ltd | Hollow molding |
| JP2011021592A (en) * | 2009-06-17 | 2011-02-03 | Aitec:Kk | Vent tube and method of manufacturing the same |
| JP2020197315A (en) * | 2019-05-31 | 2020-12-10 | キョーラク株式会社 | Duct and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0661827B2 (en) | 1994-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6060144A (en) | Hollow panel having cover material bonded thereto and process for producing same | |
| PT1183145E (en) | DEVICE FOR THE MANUFACTURE OF EXPLODED BLOW MOLDED CONTAINERS WITH AT LEAST TWO CAMERAS | |
| JP3760099B2 (en) | Insertion shielding element | |
| JPH02175225A (en) | Manufacture of hollow body made of plastic | |
| JPH0450176B2 (en) | ||
| JPH1148320A (en) | Hollow double wall molding with heat insulation | |
| JP3128664B2 (en) | Method of manufacturing housing panel for electric device | |
| JPS624057A (en) | Plastic vessel | |
| JP2021172194A (en) | Sound absorption structure | |
| JP3236655B2 (en) | Blow-molded double-wall structure and method of manufacturing the same | |
| JPS5856827A (en) | Molding method of hollow article with partition plate | |
| JP4418046B2 (en) | Blow molding method for hollow molded products | |
| JP3356333B2 (en) | Method for producing foamed resin composite molded article | |
| JPS6234533B2 (en) | ||
| JP3680194B2 (en) | Fabric-covered hollow molded article and method for producing the same | |
| JP2001242873A (en) | Soundproofing material | |
| JPH03290227A (en) | Manufacture of plastic hollow object integral with skin and hollow mold used therefor | |
| JP2761061B2 (en) | Method of manufacturing a plastic bumper having a bent portion | |
| JPH0741662B2 (en) | Double tube manufacturing method | |
| JPS6189025A (en) | Blow molded item | |
| JPH07256674A (en) | Foam and manufacture thereof | |
| JP3237020B2 (en) | Method for manufacturing resin magnetic plate | |
| JP3569932B2 (en) | Mold for molding tubular thermoplastic foamed resin molded article and method of manufacturing | |
| JP2001293771A (en) | Blow molding duct and method for molding the same | |
| JPH09207207A (en) | Manufacture of housing panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |