JPS61148019A - Plastic hollow body by bow molding - Google Patents
Plastic hollow body by bow moldingInfo
- Publication number
- JPS61148019A JPS61148019A JP59270486A JP27048684A JPS61148019A JP S61148019 A JPS61148019 A JP S61148019A JP 59270486 A JP59270486 A JP 59270486A JP 27048684 A JP27048684 A JP 27048684A JP S61148019 A JPS61148019 A JP S61148019A
- Authority
- JP
- Japan
- Prior art keywords
- parison
- plastic
- wall
- insert
- hollow body
- 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
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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
-
- 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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
- B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (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〕
本発明は包装用容器、テーブルの天板、自動車の座席用
芯材、荷物積載パレット等のブロー成形製プラスチック
中空体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to blow-molded plastic hollow bodies such as packaging containers, table tops, core materials for automobile seats, and luggage loading pallets.
ブロー成形の金型内にインサート物を配置した状態で、
プラスチックのパリスンを膨張させ、ブロー成形された
プラスチック壁にインサート物を一体に接合したブロー
成形製プラスチック中空体は、例えばインサート物であ
る表示板を容器壁面に接合した包装用容器等として公知
である。第2図は従来のブロー成形製プラスチック中空
体の一例としての包装容器IAであり、表示板2Aは包
装容器IAをブロー成形時、金型内に表示板2人をイン
サート物として設置した状態でプラスチックのパリスン
を膨張させることによりプラスチック壁4Aに表示板2
Aを一体に接合したものである。With the insert placed in the blow molding mold,
A blow-molded plastic hollow body made by expanding a plastic parison and integrally bonding an insert to a blow-molded plastic wall is known as, for example, a packaging container in which a display plate as an insert is bonded to the container wall. . Figure 2 shows a packaging container IA as an example of a conventional blow-molded plastic hollow body, and the display plate 2A is a display board 2A with two display boards installed as inserts in the mold when the packaging container IA is blow-molded. The display board 2 is attached to the plastic wall 4A by expanding the plastic parison.
A is joined together.
第2図に示すような従来の包装容器IAにあっては、表
示板2Aとプラスチック壁4Aとの接合強度に劣る。例
えば、ブロー成形時パリスンの表面が冷えている場合、
プラスチック壁4Aとなるバリスンとインサート物であ
る表示板2Aとの溶着が不良となり、接合箇所に亀裂、
隙間、変形等の発生する欠点を有する。In the conventional packaging container IA as shown in FIG. 2, the bonding strength between the display panel 2A and the plastic wall 4A is poor. For example, if the surface of the parison is cold during blow molding,
The welding between the Balison plastic wall 4A and the display board 2A, which is the insert, was defective, resulting in cracks and cracks at the joints.
It has drawbacks such as gaps and deformation.
本発明の目的は、インサート物にどのような方向から外
部応力が作用しても、プラスチック中空体の壁とインサ
ート物との接合箇所に亀裂、隙間、変形等の発生するこ
ともなく、接合強度に優れたブロー成形製プラスチ・ツ
ク中空体を提供することにある。An object of the present invention is to prevent cracks, gaps, deformation, etc. from occurring at the joint between the wall of the plastic hollow body and the insert, even if external stress is applied to the insert from any direction, and to improve the joint strength. To provide an excellent blow-molded plastic hollow body.
本発明の上記目的は、インサート物の外周縁部をプラス
チック中空体の壁にて包み込んで埋設するとともに、イ
ンサート物の裏面に先端が膨出した突起を形成し上記膨
出部をプラスチック中空体の壁にて包み込んで埋設する
ことにより達成される。より明確に本発明の構成を述べ
れば、(イ)プラスチック中空体の表面にインサート物
を接合してなるブロー成形製プラスチック中空体であり
、
(ロ)上記インサート物の外周縁部をプラスチック壁に
て包み込んで埋設するとともに、(ハ)インサート物の
裏面に突起を一体に突設し、上記突起の先端には膨出部
を形成し、
(ニ)上記膨出部をプラスチック壁にて包み込んで埋設
してなるブロー成形製プラスチック中空体、
に関するものである。The above-mentioned object of the present invention is to wrap the outer peripheral edge of the insert with the wall of the hollow plastic body and embed it therein, and to form a protrusion with a bulged tip on the back surface of the insert so that the bulge can be inserted into the hollow plastic body. This is achieved by encasing it in a wall and burying it. To describe the structure of the present invention more clearly, it is (a) a blow-molded plastic hollow body formed by bonding an insert to the surface of a plastic hollow body, and (b) an outer peripheral edge of the insert to a plastic wall. At the same time, (c) a protrusion is integrally provided on the back side of the insert, a bulge is formed at the tip of the protrusion, and (d) the bulge is wrapped with a plastic wall. This invention relates to a blow-molded plastic hollow body that is buried.
本発明によればインサート物の外周部及び内方部いずれ
も物理的にプラスチック中空体の壁と固着した構造とな
っているとともに、ブロー成形特上記固着されるインサ
ート物の部位に接触するパリスンはブロー比が比較的高
くならないので、インサート物とパリスンを膨張して成
形されるプラスチック壁とは溶着一体化する。さらに、
バリスンを膨張して成形されるプラスチ・7り壁は成形
後冷却されることにより若干収縮が発生するが、この際
インサート物は上記プラスチック壁の収縮により、より
強固に接合される。According to the present invention, both the outer peripheral part and the inner part of the insert have a structure in which they are physically fixed to the wall of the hollow plastic body, and the parison that comes into contact with the fixed part of the insert in blow molding is Since the blowing ratio is relatively low, the insert and the plastic wall formed by expanding the parison are welded together. moreover,
The plastic wall formed by expanding the ballisne will shrink slightly when it is cooled after molding, but at this time the insert will be more firmly joined due to the shrinkage of the plastic wall.
以下本発明の一実施例を図面に基づき説明するに、第1
図は本発明に係るブロー成形製プラスチック中空体の一
例として包装容器を示す。1は本発明に係る包装容器で
ありポリエチレン、ポリプロピレン等の熱可塑性プラス
チックをブロー成形することにより構成されている。2
はインサート物である表面に印刷あるいは彫刻等の付さ
れた表示板であり、表示板2の外周縁部3は表側を切欠
いて先端がブロー成形されたプラスチック壁4の内方に
位置するよう構成されている。表示板2の裏側には突起
5が一体に突設して形成され、上記突起の先端には膨出
部6が形成されている。そして、表示板2の外周縁部3
はプラスチック壁4aにて包み込んで埋設されていると
ともに、表示板2の裏面に形成した膨出部6もプラスチ
ック壁4bにて包み込んで埋設されており、ブロー成形
特バリスンを膨張して成形されるプラスチック壁4はイ
ンサート物であ〜る表示板2と一体に溶着されている。Hereinafter, one embodiment of the present invention will be described based on the drawings.
The figure shows a packaging container as an example of a blow-molded plastic hollow body according to the present invention. 1 is a packaging container according to the present invention, which is constructed by blow molding a thermoplastic such as polyethylene or polypropylene. 2
is a display board that is an insert with printing or engraving on its surface, and the outer peripheral edge 3 of the display board 2 is configured such that the front side is cut out and the tip is located inside a blow-molded plastic wall 4. has been done. A protrusion 5 is integrally formed on the back side of the display panel 2, and a protrusion 6 is formed at the tip of the protrusion. Then, the outer peripheral edge 3 of the display board 2
is wrapped and buried in a plastic wall 4a, and a bulge 6 formed on the back surface of the display board 2 is also wrapped and buried in a plastic wall 4b, and is formed by expanding a special blow-molded ballison. The plastic wall 4 is integrally welded to the display panel 2, which is an insert.
第3図から第5図は本発明に係るブロー成形製プラスチ
ック中空体をテーブルの天板として実施した他側を示し
、第6図から第8図は上記天板のブロー成形工程を示す
ものである。Figures 3 to 5 show the other side of the blow-molded plastic hollow body according to the present invention as a table top, and Figures 6 to 8 show the blow molding process for the top plate. be.
10はテーブルの天板であり、ポリエチレン、ポリプロ
ピレン、ABS樹脂、ポリカーボネート等の熱可塑性プ
ラスチックをブロー成形することにより、中空2重壁構
造に構成されている。Reference numeral 10 designates the top plate of the table, which has a hollow double-walled structure by blow molding thermoplastics such as polyethylene, polypropylene, ABS resin, and polycarbonate.
30はテーブルの脚部、31は上記脚部30の一端より
延出したフランジであり、上記フランジ31は天板10
に固着されたインサート物である取付、ブラケット20
とボルト32により取付けられている。11.12はプ
ラスチックの上壁、下壁、13は上壁11と下壁12の
間に形成された中空部である。金属あるいは硬質プラス
チック製の取付ブラケット20は板状体21と上記板状
体21より天板10内に突出する4つの突起25からな
り、突起25の先端付近には膨出部26が形成され、ま
た突起25の内部には軸方向に貫通した孔22が形成さ
れ、孔22には雌ネジが形成されている。板状体21の
外周縁部23は下壁12表面に近い箇所で、プラスチッ
クの下壁12より内方に延びた支承壁14の基端壁14
aで包み込まれて埋設され、第1の嵌合部Aを構成して
いる。30 is a leg of the table, 31 is a flange extending from one end of the leg 30, and the flange 31 is connected to the top plate 10.
The mounting bracket 20 is an insert fixed to the
and bolts 32. 11 and 12 are plastic upper and lower walls, and 13 is a hollow portion formed between the upper wall 11 and the lower wall 12. The mounting bracket 20 made of metal or hard plastic consists of a plate-shaped body 21 and four protrusions 25 that protrude from the plate-shaped body 21 into the top plate 10, and a bulge 26 is formed near the tip of the protrusion 25. Further, a hole 22 passing through in the axial direction is formed inside the projection 25, and a female thread is formed in the hole 22. The outer peripheral edge 23 of the plate-shaped body 21 is located near the surface of the lower wall 12, and is formed on the base end wall 14 of the support wall 14 extending inward from the plastic lower wall 12.
The first fitting part A is formed by being wrapped and buried in the first fitting part A.
また板状体21より一体に突設した突起25の膨出部2
6も下壁7より内方に延出した支承壁14の上端壁14
bにて包み込まれ、天板10内部に埋設され、第2の嵌
合部Bを構成している。取付ブラケット20とプラスチ
ックの下壁12とはブロー成形時一体に溶着されている
とともに、下壁12より延出した支承壁14とそれに対
向する上壁11もブロー成形時一体に溶着されている。Further, the bulging portion 2 of the protrusion 25 integrally protrudes from the plate-shaped body 21.
The upper end wall 14 of the support wall 14 also extends inward from the lower wall 7.
b, and is embedded inside the top plate 10, forming a second fitting part B. The mounting bracket 20 and the plastic lower wall 12 are welded together during blow molding, and the support wall 14 extending from the lower wall 12 and the upper wall 11 opposing it are also welded together during blow molding.
また、取付ブラケット20の板状体21は下壁12表面
より若干内方に位置することにより、脚部30のフラン
ジ31が位置規制される凹部15が形成されている。脚
部30の取付に際してはフランジ31を上記凹部15に
位置決めし、ボルト32を突部25の雌ネジに螺合する
ことにより脚部30は天板10に取付けられる。Further, the plate-shaped body 21 of the mounting bracket 20 is located slightly inward from the surface of the lower wall 12, thereby forming a recess 15 in which the flange 31 of the leg portion 30 is positioned. When attaching the legs 30, the legs 30 are attached to the top plate 10 by positioning the flange 31 in the recess 15 and screwing the bolts 32 into the female threads of the projections 25.
次に第6図から第8図に従って上記天板10のブロー成
形工程を説明するに、41.42は分割形式のブロー成
形用金型、43.44はキャビティ、45はインサート
部材である取付ブラケット20をキャビティ44内に仮
止めするための保持部であり、取付ブラケット20の孔
22に保持部45の凸部46が挿入されている。Next, to explain the blow molding process of the top plate 10 according to FIGS. 6 to 8, 41.42 is a split type blow molding mold, 43.44 is a cavity, and 45 is a mounting bracket which is an insert member. 20 in the cavity 44, and a convex portion 46 of the holding portion 45 is inserted into the hole 22 of the mounting bracket 20.
上記のように取付ブラケット20をキャビティ44内に
配置した後、ポリエチレン等の熱可塑性プラスチックを
押出機(図示せず)にて溶融混練して押出された可塑化
状態のパリスンPを第6図に示すように分割形式の金型
41,42間に配置する。After the mounting bracket 20 is placed in the cavity 44 as described above, a thermoplastic such as polyethylene is melted and kneaded in an extruder (not shown) and the extruded parison P in a plasticized state is shown in FIG. As shown, it is placed between split molds 41 and 42.
ついで、パリスンPをプリブローし、金型41゜42を
閉鎖することにより、第7図に示すように、パリスンP
は一方のキャビティ43と取付ブラケット20間で一部
溶着され、対向したバリスンPのプラスチックは一体に
溶着されるとともに、パリスンPは取付ブラケット20
の周囲に位置する。Next, by pre-blowing the parison P and closing the molds 41 and 42, the parison P is heated as shown in FIG.
is partially welded between the cavity 43 on one side and the mounting bracket 20, and the plastic of the opposing Balison P is welded together, and the Parison P is attached to the mounting bracket 20.
located around.
ついで金型41.42の閉鎖を進行させるとキャビティ
43と取付ブラケット20間のパリスンPは圧縮される
とともに第8図に示すようにパリスンP内に加圧流体を
導入してパリスンPをキャビティ43.44及び取付ブ
ラケ・ノド20の形状に沿って膨張させる。このときパ
リスンPは取付ブラケット20の膨出部26及び外周縁
部23を包み込むよう一体に溶着し、天板1oの上壁1
1、下壁12及び支承壁14が成形される。ついで、成
形品を冷却後、金型41,42を開き成形品を取出し、
第3図に示すような天板1oが得られる。Next, as the molds 41 and 42 are closed, the parison P between the cavity 43 and the mounting bracket 20 is compressed, and pressurized fluid is introduced into the parison P to move the parison P into the cavity 43 as shown in FIG. .44 and the shape of the mounting bracket throat 20. At this time, the parison P is welded together so as to wrap around the bulging part 26 and the outer peripheral edge part 23 of the mounting bracket 20, and the upper wall 1 of the top plate 1o
1. The lower wall 12 and the support wall 14 are molded. After cooling the molded product, the molds 41 and 42 are opened and the molded product is taken out.
A top plate 1o as shown in FIG. 3 is obtained.
本発明に係るブロー成形製プラスチック中空体はインサ
ート物の外周部及び内方部いずれもプラスチック壁と固
着した構造となっているので、インサート物にどのよう
な方向から外部応力が作用しても、またブロー成形後中
空体が収縮しても、インサート物とプラスチック壁との
接合個所に亀裂、隙間、変形等の発生することもなく、
固着強度に優れる。Since the blow-molded plastic hollow body according to the present invention has a structure in which both the outer peripheral part and the inner part of the insert are fixed to the plastic wall, no matter which direction external stress acts on the insert, In addition, even if the hollow body shrinks after blow molding, cracks, gaps, deformation, etc. will not occur at the joint between the insert and the plastic wall.
Excellent adhesion strength.
第1図は本発明に係るブロー成形製プラスチック中空体
の一実施例である包装容器の一部破断正面図、第2図は
従来の包装容器の一部破断正面図、第3図は本発明に係
るブロー成形製中空体の他側であるテーブル用天板の底
面図、第4図は同上部、 分拡大図、第5図は第4図の
1−1断面図、第6図から第8図は天板のブロー成形工
程を示す要部金型断面図である。FIG. 1 is a partially cutaway front view of a packaging container which is an embodiment of the blow-molded plastic hollow body according to the present invention, FIG. 2 is a partially cutaway front view of a conventional packaging container, and FIG. 3 is a partially cutaway front view of a conventional packaging container. Fig. 4 is an enlarged view of the upper part of the table top plate, which is the other side of the blow-molded hollow body, Fig. 5 is a 1-1 sectional view of Fig. 4, and Figs. FIG. 8 is a sectional view of the main part of the mold showing the blow molding process of the top plate.
Claims (1)
るブロー成形製中空体であり、上記インサート物の外周
縁部をプラスチック壁にて包み込んで埋設するとともに
、インサート物の裏面に突起を一体に突設し、上記突起
の先端には膨出部を形成し、上記膨出部をプラスチック
壁にて包み込んで埋設したことを特徴とするブロー成形
製プラスチック中空体。This is a blow-molded hollow body made by joining an insert to the surface of a hollow plastic body.The outer periphery of the insert is wrapped and buried in a plastic wall, and a protrusion is integrally protruded from the back of the insert. A blow-molded plastic hollow body, characterized in that a bulge is formed at the tip of the protrusion, and the bulge is surrounded and embedded in a plastic wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59270486A JPS61148019A (en) | 1984-12-21 | 1984-12-21 | Plastic hollow body by bow molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59270486A JPS61148019A (en) | 1984-12-21 | 1984-12-21 | Plastic hollow body by bow molding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61148019A true JPS61148019A (en) | 1986-07-05 |
JPH0441646B2 JPH0441646B2 (en) | 1992-07-09 |
Family
ID=17486960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59270486A Granted JPS61148019A (en) | 1984-12-21 | 1984-12-21 | Plastic hollow body by bow molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61148019A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01218819A (en) * | 1988-02-29 | 1989-09-01 | Kyoraku Co Ltd | Plastic blow molded product with nut buried and its molding method |
JPH068210U (en) * | 1992-07-06 | 1994-02-01 | 株式会社吉野工業所 | Synthetic resin container |
US5445783A (en) * | 1993-07-06 | 1995-08-29 | Ford Motor Company | Blow molding method |
EP1667835A1 (en) * | 2003-09-30 | 2006-06-14 | Salflex Polymers Ltd. | Method for molding running board with step plate |
DE102008025662A1 (en) * | 2008-05-28 | 2009-12-03 | MöllerTech GmbH | A method of manufacturing a blow molding component, blow molding component and blow molding tool for producing a blow molding component |
WO2014058059A1 (en) * | 2012-10-14 | 2014-04-17 | キョーラク株式会社 | Resin sandwich panel, and manufacturing method for resin sandwich panel |
JP2014079899A (en) * | 2012-10-14 | 2014-05-08 | Kyoraku Co Ltd | Made-of-resin sandwich panel and method for manufacturing a made-of-resin sandwich panel |
JP2014079901A (en) * | 2012-10-14 | 2014-05-08 | Kyoraku Co Ltd | Made-of-resin sandwich panel and method for manufacturing the same |
JP2015171901A (en) * | 2014-03-12 | 2015-10-01 | 戎屋化学工業株式会社 | blow-molded container |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI581943B (en) * | 2014-11-13 | 2017-05-11 | Yu-Jing Dong | Hollow blow molding box with corner cuff |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58151014U (en) * | 1982-04-02 | 1983-10-11 | 日産自動車株式会社 | Decorative component mounting structure for blow molded parts |
-
1984
- 1984-12-21 JP JP59270486A patent/JPS61148019A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58151014U (en) * | 1982-04-02 | 1983-10-11 | 日産自動車株式会社 | Decorative component mounting structure for blow molded parts |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01218819A (en) * | 1988-02-29 | 1989-09-01 | Kyoraku Co Ltd | Plastic blow molded product with nut buried and its molding method |
JPH068210U (en) * | 1992-07-06 | 1994-02-01 | 株式会社吉野工業所 | Synthetic resin container |
US5445783A (en) * | 1993-07-06 | 1995-08-29 | Ford Motor Company | Blow molding method |
EP1667835A1 (en) * | 2003-09-30 | 2006-06-14 | Salflex Polymers Ltd. | Method for molding running board with step plate |
JP2007507366A (en) * | 2003-09-30 | 2007-03-29 | サルフレックス ポリマーズ リミテッド | Method for forming a running board with a step board |
EP1667835A4 (en) * | 2003-09-30 | 2009-05-13 | Salflex Polymers Ltd | Method for molding running board with step plate |
DE102008025662A1 (en) * | 2008-05-28 | 2009-12-03 | MöllerTech GmbH | A method of manufacturing a blow molding component, blow molding component and blow molding tool for producing a blow molding component |
WO2014058059A1 (en) * | 2012-10-14 | 2014-04-17 | キョーラク株式会社 | Resin sandwich panel, and manufacturing method for resin sandwich panel |
JP2014079899A (en) * | 2012-10-14 | 2014-05-08 | Kyoraku Co Ltd | Made-of-resin sandwich panel and method for manufacturing a made-of-resin sandwich panel |
JP2014079901A (en) * | 2012-10-14 | 2014-05-08 | Kyoraku Co Ltd | Made-of-resin sandwich panel and method for manufacturing the same |
JP2015171901A (en) * | 2014-03-12 | 2015-10-01 | 戎屋化学工業株式会社 | blow-molded container |
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