JPH04147833A - Manufacture of foamed synthetic resin molded product having hinge - Google Patents
Manufacture of foamed synthetic resin molded product having hingeInfo
- Publication number
- JPH04147833A JPH04147833A JP2272902A JP27290290A JPH04147833A JP H04147833 A JPH04147833 A JP H04147833A JP 2272902 A JP2272902 A JP 2272902A JP 27290290 A JP27290290 A JP 27290290A JP H04147833 A JPH04147833 A JP H04147833A
- Authority
- JP
- Japan
- Prior art keywords
- hinge
- molding element
- cavity
- molded product
- mold
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 229920003002 synthetic resin Polymers 0.000 title claims description 10
- 239000000057 synthetic resin Substances 0.000 title claims description 10
- 238000000465 moulding Methods 0.000 claims abstract description 63
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000011347 resin Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 238000007906 compression Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 238000005187 foaming Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 229920005990 polystyrene resin Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0446—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by increasing the density locally by compressing part of the foam while still in the mould
Landscapes
- Molding Of Porous Articles (AREA)
Abstract
Description
（産業上の利用分野］
本発明は折り曲げができる発泡合成樹脂成形品、特にヒ
ンジ付き発泡ポリスチレン系樹脂成形品の製造方法に関
する。
ｒ従来の技術】
従来より知られているヒンジ付き発泡ポリ入りレン系樹
脂成形品の製造技術としては、例えば参公昭５４−２３
７１２号公報に開示されているように。
ポリスチレン系樹脂の予備発泡樹脂粒子による４内成形
で得られた発泡体を型締めして、該発泡付全体を再度圧
縮し、その圧縮工程でヒンジ形成Ａによってヒンジ部に
可撓性を付与する方法があるまた、一方では金型に付属
している７字状のヒンジ形成用摺動金型を金型のキャビ
ティ内に向がって前進後退自在となし、ヒンジ形成用摺
動金型を前進させた状態でキャビティ内に原料樹脂を充
填し、原料粒子の加熱融着時に該ヒンジ形成用摺動金型
をキャビティ内より後退させることによって、成形品本
体よりヒンジ部分を高発泡倍率とし次いで、ヒンジ形成
用摺動金型をキャビティ内に向かって前進させ、ヒンジ
部を圧縮するようにした製造技術も知られている（１例
として特開昭６３−２９０７２０号公報を参照）。(Industrial Application Field) The present invention relates to a method for manufacturing a bendable foamed synthetic resin molded product, particularly a hinged foamed polystyrene resin molded product. rPrior Art] A conventionally known hinged foamed polystyrene resin molded product. As for the manufacturing technology of resin molded products, for example,
As disclosed in Publication No. 712. The foam obtained by internal molding with pre-expanded resin particles of polystyrene resin is clamped, the entire foamed body is compressed again, and in the compression process, flexibility is imparted to the hinge part by hinge formation A. On the other hand, a 7-shaped hinge-forming sliding mold attached to the mold can be moved forward and backward into the mold cavity, and the hinge-forming sliding mold can be moved forward and backward into the mold cavity. The raw material resin is filled into the cavity in the advanced state, and the hinge-forming sliding mold is retreated from the cavity when the raw material particles are heated and fused, so that the hinge part has a higher foaming ratio than the molded product body. There is also known a manufacturing technique in which a sliding mold for forming a hinge is advanced toward the inside of the cavity to compress the hinge portion (see Japanese Patent Laid-Open No. 63-290720 as an example).
【発明が解決しようとする課題Ｊ
特公昭５４−２３７１２号公報に開示されている製造技
術では、成形品のヒンジ部のみを他の成形品本体部分よ
り高圧縮することはできず、若し、ヒンジ部が満足され
るように高圧縮された場合には、成形品本体も同様に圧
縮されることが避けられないばかりか、成形品本体の肉
厚が薄いと内面形状が本体外面に圧縮痕として呪われる
不具合が起こり、製品の商品価値を低下させるといった
問題がある。 また、特開昭６３−２９０７２０号公報
に開示されている製造技術では、ヒンジ部は最終的には
成形品本体の発泡倍率と同程度であって、折り曲げ強度
の向上はそれほど期待できない。
本発明はこのような問題を解決したものであって、その
目的はヒンジ部のみを他の成形品本体から独立して圧縮
することが可能であって、高い圧縮率によってヒンジ部
の折り曲げ強度を一段と向上できるように改良したヒン
ジ付き発泡合成樹脂成形品の製造方法を提供することに
ある。
【課題を解決するための手段】
上記目的を達成するために、本発明の特徴とするヒンジ
付き発泡合成樹脂成形品の製造方法の一つは被成形品に
折り曲げ用のヒンジ部を形成するためのヒンジ成形子を
少なくとも一方の金型に摺動自在に設けてある雌雄一対
の成形金型を用い、上記ヒンジ成形子を金型のキャビテ
ィ内から後退させた状態で、該キャビティ内に予備発泡
樹脂粒子を充填し、次いで、充填された予備発泡樹脂粒
子を加熱融着させ、この段階で得られた成形体の一部を
キャビティ内に向かって前進させたヒンジ成形子により
圧縮した後、上記成形体を冷却することにある。 そし
て、本発明の特徴とするヒンジ付き発泡合成樹脂成形品
の製造方法の他の一つは被成形品に折り曲げ用のヒンジ
部を形成するためのヒンジ成形子を一方の金型に設ける
と共に、他方の金型の該ヒンジ成形子の対向部分に補助
成形子を摺動自在に設けてある雌雄一対の成形金型を用
い、上記補助成形子を金型のキャビティ内側面から後退
させた状態で、該キャビティ内に予備発泡樹脂粒子を充
填し、次いで、充填された予備発泡樹脂粒子を加熱融着
させ、この段階で得られた成形体の一部をキャビティ内
に向かって前進させた補助成形子により圧縮した後、上
記成形体を冷却することにある。
更に、上記両製造方法の何れも、キャビティ側に臨んだ
部分が２個の山形に形成されているヒンジ成形子を用い
ることによって、 １８０°の折り曲げができるヒンジ
付き発泡合成樹脂成形品を製造することが可能である。Problems to be Solved by the Invention J In the manufacturing technology disclosed in Japanese Patent Publication No. 54-23712, it is not possible to compress only the hinge part of a molded product to a higher degree than the other main body parts of the molded product. If the hinge part is highly compressed to satisfy the requirements, it is inevitable that the molded product body will be compressed as well, and if the wall thickness of the molded product body is thin, the inner shape will cause compression marks on the outer surface of the main body. There are problems such as problems that can be cursed and reduce the commercial value of the product. Furthermore, in the manufacturing technique disclosed in Japanese Patent Application Laid-Open No. 63-290720, the final foaming ratio of the hinge portion is approximately the same as the foaming ratio of the molded product body, and no significant improvement in bending strength can be expected. The present invention solves these problems, and its purpose is to make it possible to compress only the hinge part independently from the rest of the molded product body, and to increase the bending strength of the hinge part with a high compression rate. It is an object of the present invention to provide a method for manufacturing a hinged foamed synthetic resin molded product that is improved to a greater extent. [Means for Solving the Problems] In order to achieve the above object, one of the methods for manufacturing a hinged foamed synthetic resin molded product, which is a feature of the present invention, is to form a hinge part for bending on a molded product. Using a pair of male and female molds in which a hinge former is slidably provided in at least one of the molds, pre-foaming is carried out in the cavity with the hinge former retracted from the cavity of the mold. Filled with resin particles, then heated and fused the filled pre-foamed resin particles, compressed a part of the molded body obtained at this stage by a hinge molder advanced toward the inside of the cavity, and then The purpose is to cool the molded body. Another method of manufacturing a hinged foamed synthetic resin molded product, which is a feature of the present invention, includes providing a hinge molding element in one mold for forming a hinge portion for bending the molded product, and Using a pair of male and female molding molds in which an auxiliary molding element is slidably provided on a portion facing the hinge molding element of the other mold, the auxiliary molding element is retracted from the inner surface of the cavity of the mold. , auxiliary molding in which the cavity is filled with pre-expanded resin particles, the filled pre-expanded resin particles are then heated and fused, and a part of the molded body obtained at this stage is advanced into the cavity. After being compressed by the compressor, the molded body is cooled. Furthermore, in both of the above manufacturing methods, by using a hinge molding element whose portion facing the cavity side is formed into two chevron shapes, a hinged foamed synthetic resin molded product that can be bent by 180 degrees is manufactured. Is possible.
金型のキャビティ内に充填された予備発泡樹脂粒子を加
熱融着させた後、ヒンジ成形子および／または補助成形
子をキャビティ内に向かって前進させることで、このヒ
ンジ成形子および／または補助成形子によって成形品の
ヒンジ部のみが高圧縮され、ヒンジ部の折り曲げ強度を
一段と向上できる。
（実 施 例］
先ず、本発明製造方法の実施に用いられる成形金型につ
いて説明する。
第１図及び第２図に示すように、１は所望のキャビティ
２を形成できる成形金型であって、支持枠３ａ、３ｂに
それぞれ支持されている雌雄一対の金型１ａと１ｂによ
り構成されており、金型１ａ、ｌｂと支持枠３ａ、３ｂ
とによってそれぞれチャンバー４ａ、４ｂが形成されて
いる。
一方の金型１ａには、キャビティ２側に臨んだ部分を７
字状の山部５ａと谷部５ｂに形成したヒンジ成形子５を
摺動自在に設けてあり、このヒンジ成形子５は作動シリ
ンダー６のピストンロット６ａに支持され、キャビティ
２内に向かって前進後退動作を行なう。 また、他方の
金型１ｂには、上記ヒンジ成形子５に対向させて、キャ
ビティ２に向かって前進後退動作を行なう補助成形子７
を設けてあり１、この成形子７は作動シリンダー８のピ
ストンロッド８ａに支持されて摺動する。
そして、両全型１ａ、ｌｂの相対向した型壁部には複数
個の蒸気孔９ａ、９ｂ及び、上記ヒンジ成形子５と補助
成形子７がそれぞれ摺動自在に嵌合する嵌合穴１１，１
２を設けてある。 また、各々のチャンバー４ａ、４ｂ
には蒸気導入管１３゜１４、冷却水導入管１５．１６及
び排出管１７゜１８がそれぞれ接続されている一方、蒸
気導入管１３．１４と排出管１７．１８には空気導入管
１９．２１と真空引き用の吸引管２２．２３がそれぞれ
接続されており、これらの管１３〜２３はそれぞれ開閉
弁１３ａ ＋ １４ ａ ｔ １５ ａ ｔ １６ ａ
ｔ１７ａ、１８ａ、１９ａ、２１ａ、２２ａ、２３ａ
によって総てが開閉自在とされ、更にまた、図上で雄型
として機能している金型１ｂには予備発泡樹脂粒子の充
填ガン２４が接続されている。
次に、製造方法を説明する。
第１図に示すように、両金型１ａと１ｂが接合しており
、また、幅が１５ｍｍである補助成形子７を金型（雄型
）ｌｂの内壁面に位置させると共に、同じく幅が１５０
１１１であるヒンジ成形子５をその山部５ａの稜線と補
助成形子７との間隔が０．３ａｍとなるように位置させ
た状態から、双方の成形子５゜７ををそれぞれ５ＩＩＩ
ｍ後退させた状態で、該キャビティ２内に密度が２０ｇ
／Ωであるポリスチレン系樹脂の予備発泡樹脂粒子を圧
力が５ｋｇ／ｃｘｌの空気により充填ガン２４を通して
充填する。 次いで、蒸気導入管１３．１４からチャン
バー４ａ、４ｂ内に１．０ｋｇ ／ ａ＃Ｇの蒸気を２
０秒間導入して予備発泡樹脂粒子を加熱融着させた後、
この段階で得られた成形体ｆのヒンジ部となる部分をヒ
ンジ成形子５と補助成形子７をキャビティ２内に向かっ
てそれぞれ５ｍ１１１前進させることにより圧縮する（
第２図参照）。 そして、この圧縮が終了した後で従
来と同様に冷却作業に移り、型開きして第３図に示すよ
うな成形品３１を得ることができる。 製造された成形
品３１には、特に第４図に示すように、山部３２ｂを挾
んで二つの谷部３２ａ、３２ａからなるヒンジ部３２が
形成されるもので、図示の場合には１８０″′の折り曲
げができる。 この製造例によれば、成形品のヒンジ部
となる部分はヒンジ成形子５と補助成形子７によって両
側から圧縮され、他の成形体本体の部分からは独立して
高圧縮率を保持でき、その折り曲げ強度を格段に向上で
きた。 因みに、ヒンジ部の破壊に到るまでの折り曲げ
回数は、従来技術による成形品では高々 １００回であ
るのに対し、本発明による成形品では３００００回であ
った。 なお、ヒンジ部（前記谷部）の圧縮前の発泡倍
率は２０〜６０倍、圧縮後のそれは３．３倍以下で、好
ましくは２倍以下である。
しかして、前述の実施例においては、一方の金型にヒン
ジ成形子を他方の金型に補助成形子をそれぞれ摺動自在
に設けると共に、予備発泡樹脂粒子のキャビティ内への
充填時にはヒンジ成形子と補助成形子の双方をキャビテ
ィ内から後退させ、予備発泡樹脂粒子の加熱融着後に双
方の成形子を前進させて、成形品のヒンジ部を圧縮する
方法が採用されているが、本発明は、このような方法に
限定されるものではなく、一方の金型にのみヒンジ成形
子を摺動自在に設け、そのヒンジ成形子を後退、前進さ
せる方法は勿論のこと、一方の金型上にヒンジ成形子を
、他方の金型に補助成形子をそれぞれ設けるが、そのヒ
ンジ成形子のみを後退、前進させる方法、また、その補
助成形子のみを後退、前進させる方法、及び、一方の金
型にヒンジ成形子を固定状態で設け、かつ他方の金型に
補助成形子を摺動自在に設けて、その補助成形子を後退
。前進させる方法、更に、両金型にヒンジ成形子を設け
て、少なくとも一方のヒンジ成形子を摺動自在となし、
その摺動自在のヒンジ成形子を後退、前進させる方法等
を包含するものである。After the pre-foamed resin particles filled in the cavity of the mold are heated and fused, the hinge molder and/or the auxiliary molder are advanced into the cavity to form the hinge molder and/or the auxiliary molder. Only the hinge portion of the molded product is highly compressed by the child, and the bending strength of the hinge portion can be further improved. (Example) First, a molding die used for carrying out the manufacturing method of the present invention will be explained. As shown in FIGS. 1 and 2, 1 is a molding die that can form a desired cavity 2. It is composed of a pair of male and female molds 1a and 1b supported by support frames 3a and 3b, respectively.
Chambers 4a and 4b are formed by these, respectively. On one side of the mold 1a, the part facing the cavity 2 side is 7
A hinge molding element 5 formed in a letter-shaped peak part 5a and a trough part 5b is slidably provided, and this hinge molding element 5 is supported by a piston rod 6a of an operating cylinder 6 and advances toward the inside of the cavity 2. Perform a backward movement. Further, in the other mold 1b, an auxiliary molding element 7 is provided which faces the hinge molding element 5 and moves forward and backward toward the cavity 2.
1 is provided, and this forming element 7 is supported by a piston rod 8a of an operating cylinder 8 and slides thereon. A plurality of steam holes 9a, 9b are provided in the opposing mold walls of the two full molds 1a, lb, and fitting holes 11 into which the hinge molding element 5 and the auxiliary molding element 7 are slidably fitted, respectively. ,1
2 is provided. In addition, each chamber 4a, 4b
A steam introduction pipe 13.14, a cooling water introduction pipe 15.16 and a discharge pipe 17.18 are respectively connected to the steam introduction pipe 13.14 and a discharge pipe 17.18, while an air introduction pipe 19.21 is connected to the steam introduction pipe 13.14 and discharge pipe 17.18. and suction pipes 22 and 23 for evacuation are respectively connected, and these pipes 13 to 23 are respectively connected to on-off valves 13a + 14a t 15 a t 16a
t17a, 18a, 19a, 21a, 22a, 23a
Furthermore, a filling gun 24 for pre-foamed resin particles is connected to the mold 1b, which functions as a male mold in the figure. Next, the manufacturing method will be explained. As shown in FIG. 1, both molds 1a and 1b are joined, and an auxiliary molding element 7 with a width of 15 mm is positioned on the inner wall surface of the mold (male mold) lb, and the width is also 15 mm. 150
From the state in which the hinge molding element 5 (No. 111) is positioned so that the distance between the ridgeline of its mountain portion 5a and the auxiliary molding element 7 is 0.3 am, both molding elements 5°7 are respectively 5III.
When the cavity 2 is moved back, the density is 20g.
Pre-foamed resin particles of polystyrene resin having a diameter of 1.5 kg/Ω are filled with air at a pressure of 5 kg/cxl through a filling gun 24. Next, 1.0 kg/a#G of steam is introduced into the chambers 4a and 4b from the steam introduction pipe 13.14.
After introducing it for 0 seconds to heat and fuse the pre-foamed resin particles,
The portion of the molded body f obtained at this stage that will become the hinge part is compressed by advancing the hinge molding element 5 and the auxiliary molding element 7 by 5 m111 each toward the inside of the cavity 2 (
(See Figure 2). After this compression is completed, the cooling operation is started as in the conventional method, and the mold is opened to obtain a molded product 31 as shown in FIG. Particularly, as shown in FIG. 4, the manufactured molded product 31 is formed with a hinge part 32 consisting of two valley parts 32a, 32a sandwiching a peak part 32b, and in the case shown in the figure, the hinge part 32 is 180''. According to this production example, the hinge section of the molded product is compressed from both sides by the hinge molding element 5 and the auxiliary molding element 7, and the height can be bent independently from other parts of the molded body. It was possible to maintain the compression ratio and significantly improve the bending strength.Incidentally, the molded product made using the present invention could only be bent 100 times at most before the hinge part broke. The foaming ratio of the hinge part (the valley part) before compression is 20 to 60 times, and after compression it is 3.3 times or less, preferably 2 times or less. In the above embodiment, one mold is provided with a hinge molding element and the other mold is provided with an auxiliary molding element so as to be slidable, and the hinge molding element and the auxiliary molding element are provided when filling the cavity with pre-foamed resin particles. A method has been adopted in which both molding elements are retreated from inside the cavity, and after the pre-expanded resin particles are heated and fused, both molding elements are moved forward to compress the hinge portion of the molded product. The method is not limited to such a method, and it is possible to use a method in which a hinge molding element is slidably provided on only one mold and the hinge molding element is moved backwards and forwards. A method for retracting and advancing only the hinge molding element, and a method for retracting and advancing only the auxiliary molding element; A method of providing a molding element in a fixed state and slidably providing an auxiliary molding element on the other mold, and retracting and advancing the auxiliary molding element; One hinge molder is made slidable,
This includes methods for retracting and advancing the slidable hinge former.
本発明は上記の如くであって、予備発泡樹脂粒子の充填
時にはキャビティ内より後退させておいたヒンジ成形子
および／または補助成形子を、予備発泡樹脂粒子が加熱
融着した後に、キャビティ内に向かって前進動作させ、
このヒンジ成形子および／または補助成形子によって成
形品のヒンジ部のみを他の成形品本体とは独立して圧縮
できるため、ヒンジ部の高圧縮が可能であって、該部分
の折り曲げ強度を一段と向上できる一方、成形品の外面
側に圧縮痕が現われる不具合を完全に解消できる効果が
ある。 したがって、本発明製造方法によれば耐久性に
優れ、商品価値の良好なヒンジ付き発泡合成樹脂成形品
を提供できる。The present invention is as described above, and the hinge molding element and/or the auxiliary molding element, which have been retracted from the inside of the cavity when filling the pre-foamed resin particles, are inserted into the cavity after the pre-foamed resin particles are heated and fused. Move forward toward the
This hinge molder and/or auxiliary molder can compress only the hinge part of the molded product independently from the rest of the molded product body, so the hinge part can be highly compressed, and the bending strength of the part can be further increased. It has the effect of completely eliminating the problem of compression marks appearing on the outer surface of the molded product. Therefore, according to the manufacturing method of the present invention, a hinged foamed synthetic resin molded product with excellent durability and good commercial value can be provided.
【図面の簡単な説明】
第１図及び第２図は本発明製造方法の実施に用いられる
成形金型による成形段階の１例を示す断面図、第３図は
製造された成形品の１例を示す斜視図、第４図は第３図
Ａ−Ａ線の拡大断面図である。
図中、１は成形金型、ｌａ、ｌｂは雌雄の金型、２はキ
ャビティ、５はヒンジ成形子、５ａは山部。
５ｂは谷部、７は補助成形子、ｆは成形体である。
第１
図
第２
図[Brief Description of the Drawings] Figures 1 and 2 are cross-sectional views showing an example of a molding step using a molding die used to carry out the manufacturing method of the present invention, and Figure 3 is an example of a manufactured molded product. FIG. 4 is an enlarged sectional view taken along line A-A in FIG. 3. In the figure, 1 is a molding die, la and lb are male and female molds, 2 is a cavity, 5 is a hinge molding element, and 5a is a mountain part. 5b is a trough, 7 is an auxiliary molding element, and f is a molded body. Figure 1 Figure 2
Claims (4)
のヒンジ成形子を少なくとも一方の金型に摺動自在に設
けてある雌雄一対の成形金型を用い、上記ヒンジ成形子
を金型のキャビティ内から後退させた状態で、該キャビ
ティ内に予備発泡樹脂粒子を充填し、次いで、充填され
た予備発泡樹脂粒子を加熱融着させ、この段階で得られ
た成形体の一部をキャビティ内に向かって前進させたヒ
ンジ成形子により圧縮した後、上記成形体を冷却するこ
とを特徴とするヒンジ付き発泡合成樹脂成形品の製造方
法。(1) Using a pair of male and female molding molds in which at least one of the molds is slidably provided with a hinge molding element for forming a bending hinge part on the molded product, the hinge molding element is placed in the mold. The pre-expanded resin particles are filled into the cavity while the molded body is retracted from the inside of the cavity, and then the filled pre-expanded resin particles are heated and fused, and a part of the molded product obtained at this stage is inserted into the cavity. 1. A method for manufacturing a hinged foamed synthetic resin molded article, which comprises compressing the molded article with a hinge molding element advanced inward, and then cooling the molded article.
れているヒンジ成形子を用いることを特徴とする請求項
（１）記載のヒンジ付き発泡合成樹脂成形品の製造方法
。(2) The method for manufacturing a hinged synthetic resin molded article according to claim (1), characterized in that a hinge molding element whose portion facing the cavity side is formed into two chevron shapes is used.
のヒンジ成形子を一方の金型に設けると共に、他方の金
型の該ヒンジ成形子の対向部分に補助成形子を摺動自在
に設けてある雌雄一対の成形金型を用い、上記補助成形
子を金型のキャビティ内側面から後退させた状態で、該
キャビティ内に予備発泡樹脂粒子を充填し、次いで、充
填された予備発泡樹脂粒子を加熱融着させ、この段階で
得られた成形体の一部をキャビティ内に向かって前進さ
せた補助成形子により圧縮した後、上記成形体を冷却す
ることを特徴とするヒンジ付き発泡合成樹脂成形品の製
造方法。(3) A hinge molding element for forming a bending hinge part on the molded product is provided in one mold, and an auxiliary molding element is slidably provided on the opposite part of the hinge molding element of the other mold. Using a pair of male and female molds, the cavity is filled with pre-foamed resin particles while the auxiliary molding element is retracted from the inner surface of the cavity of the mold, and then the filled pre-foamed resin particles are filled into the cavity. Hinged foam synthesis characterized in that the particles are heated and fused, a part of the molded body obtained at this stage is compressed by an auxiliary molding element advanced toward the inside of the cavity, and then the molded body is cooled. Method for manufacturing resin molded products.
れているヒンジ成形子を用いることを特徴とする請求項
（３）記載のヒンジ付き発泡合成樹脂成形品の製造方法
。(4) The method for manufacturing a hinged synthetic resin molded article according to claim (3), characterized in that a hinge molding element whose portion facing the cavity side is formed into two chevron shapes is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2272902A JPH04147833A (en) | 1990-10-11 | 1990-10-11 | Manufacture of foamed synthetic resin molded product having hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2272902A JPH04147833A (en) | 1990-10-11 | 1990-10-11 | Manufacture of foamed synthetic resin molded product having hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04147833A true JPH04147833A (en) | 1992-05-21 |
Family
ID=17520354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2272902A Pending JPH04147833A (en) | 1990-10-11 | 1990-10-11 | Manufacture of foamed synthetic resin molded product having hinge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04147833A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06320943A (en) * | 1993-04-16 | 1994-11-22 | Filterwerk Mann & Hummel Gmbh | Air filter for car interior space |
| JP2013507281A (en) * | 2009-10-13 | 2013-03-04 | サムスン エレクトロニクス カンパニー リミテッド | Foamed resin product and foamed resin production mold for producing the same |
| ITTO20130826A1 (en) * | 2013-10-14 | 2015-04-15 | Bazzica Engineering S R L | METHOD AND MOLD FOR MOLDING A COLLASSABLE CONTAINER IN EXPANDED PLASTIC MATERIAL, AND CONTAINER SO IT IS OBTAINED |
| WO2016023067A1 (en) * | 2014-08-12 | 2016-02-18 | Icee Holdings Pty Ltd | System and method for creating a fold in a portion of expandable material |
| WO2018112506A1 (en) * | 2016-12-23 | 2018-06-28 | Icee Holdings Pty Ltd | System and apparatus for forming a collapsible structure made from expandible material |
-
1990
- 1990-10-11 JP JP2272902A patent/JPH04147833A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06320943A (en) * | 1993-04-16 | 1994-11-22 | Filterwerk Mann & Hummel Gmbh | Air filter for car interior space |
| JP2013507281A (en) * | 2009-10-13 | 2013-03-04 | サムスン エレクトロニクス カンパニー リミテッド | Foamed resin product and foamed resin production mold for producing the same |
| ITTO20130826A1 (en) * | 2013-10-14 | 2015-04-15 | Bazzica Engineering S R L | METHOD AND MOLD FOR MOLDING A COLLASSABLE CONTAINER IN EXPANDED PLASTIC MATERIAL, AND CONTAINER SO IT IS OBTAINED |
| WO2015056181A1 (en) * | 2013-10-14 | 2015-04-23 | Bazzica Engineering S.R.L. | Method and mold for molding a collapsible, foam plastic container |
| US10717215B2 (en) | 2013-10-14 | 2020-07-21 | Bazzica Engineering S.R.L. | Method and mold for molding a collapsible, foam plastic container |
| JP2017523931A (en) * | 2014-08-12 | 2017-08-24 | アイシーイーイー ホールディングス プティ リミテッド | System and method for creating a crease in a portion of an inflatable material |
| KR20170041259A (en) * | 2014-08-12 | 2017-04-14 | 아이씨이이 홀딩스 피티와이, 리미티드 | System and method for creating a fold in a portion of expandable material |
| EP3180181A4 (en) * | 2014-08-12 | 2018-08-08 | ICEE Holdings Pty Limited | System and method for creating a fold in a portion of expandable material |
| US10307944B2 (en) | 2014-08-12 | 2019-06-04 | Icee Holdings Pty Ltd. | System and method for creating a fold in a portion of expandable material |
| EA034630B1 (en) * | 2014-08-12 | 2020-02-28 | АйСиИИ ХОЛДИНГС ПиТиУай ЛТД. | System and method for creating a fold in a portion of expandable material |
| WO2016023067A1 (en) * | 2014-08-12 | 2016-02-18 | Icee Holdings Pty Ltd | System and method for creating a fold in a portion of expandable material |
| WO2018112506A1 (en) * | 2016-12-23 | 2018-06-28 | Icee Holdings Pty Ltd | System and apparatus for forming a collapsible structure made from expandible material |
| EA037036B1 (en) * | 2016-12-23 | 2021-01-28 | АйСиИИ ХОЛДИНГС ПиТиУай ЛТД | System and apparatus for forming a collapsible structure made from expandible material |
| US11648715B2 (en) | 2016-12-23 | 2023-05-16 | Icee Holding Pty Ltd | System and apparatus for forming a collapsible structure made from expandable material |
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