JPH062502B2 - Foam synthetic resin assembly box and manufacturing method thereof - Google Patents
Foam synthetic resin assembly box and manufacturing method thereofInfo
- Publication number
- JPH062502B2 JPH062502B2 JP63098548A JP9854888A JPH062502B2 JP H062502 B2 JPH062502 B2 JP H062502B2 JP 63098548 A JP63098548 A JP 63098548A JP 9854888 A JP9854888 A JP 9854888A JP H062502 B2 JPH062502 B2 JP H062502B2
- Authority
- JP
- Japan
- Prior art keywords
- hinge
- mold
- bottom portion
- side wall
- assembly box
- 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
Landscapes
- Rigid Containers With Two Or More Constituent Elements (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は発泡合成樹脂製組立箱及びその製造方法に関
し、更に詳しくは、安価で、耐久性に優れ、且つ重量の
ある内容物を収容することのできる発泡合成樹脂製組立
箱及びその製造方法に関するものである。Description: TECHNICAL FIELD The present invention relates to a foam synthetic resin assembly box and a method for manufacturing the same, and more specifically, it is inexpensive, has excellent durability, and accommodates heavy contents. The present invention relates to an expandable synthetic resin assembly box and a manufacturing method thereof.
従来、この種の組立箱としては、発泡スチレン樹脂を用
い、第１１図に示す如く、側壁（２）を平面状に展開し
た状態で成形され、第１２図及び第１３図に示す如く、
使用時にＶ字形の切込みヒンジ部（３）を介して箱に組
み立てられ使用に供されている。尚、上記において蓋体
は省略してある。Conventionally, as an assembly box of this type, foamed styrene resin has been used, and as shown in FIG. 11, it is molded with the side wall (2) expanded in a flat shape, and as shown in FIG. 12 and FIG.
At the time of use, it is assembled into a box through the V-shaped notch hinge portion (3) and is used. The lid is omitted in the above.
しかし乍ら、かかる構造の組立箱は、切込みヒンジ部
の強度が弱く、重量のある内容物を収容することができ
ない、切込みヒンジ部が箱のコーナー部にあるため、
他の物と接触、衝突等による摩耗や破損が生じてヒンジ
部の強度を低下させ、組立箱としての耐久性を低下させ
る、平面状に展開した状態で成形するため金型取数が
少なく、従ってコスト・アップとならざるを得ない、等
の問題を孕んでいる。However, in the assembled box having such a structure, the strength of the notch hinge portion is weak and it is not possible to accommodate heavy contents. Since the notch hinge portion is at the corner of the box,
Wear and damage due to contact with other objects, collision, etc. will reduce the strength of the hinge part and reduce the durability as an assembly box.Because molding is performed in a flat state, the number of molds is small, Therefore, there are problems such as inevitably increasing costs.
本発明者らはかかる実情に鑑み、上記問題を解消するべ
く鋭意研究の結果、本発明に到達したものである。The inventors of the present invention have arrived at the present invention as a result of earnest research in order to solve the above problems in view of the actual situation.
即ち、本発明の第１は、底部とその周囲に切込みヒンジ
部を介して立設された側壁部とから構成される発泡合成
樹脂製の組立箱において、前記切込みヒンジ部が前記側
壁部の内表面の延長線上に垂直に前記底部に設けられた
発泡合成樹脂製組立箱を、 本発明の第２は、コア金型（１１）とキャビティ金型
（１２）により、底部（１）とその周囲に立設される側
壁部（２）とからなる、断面が凹形状の型窩を形成し、
前記コア金型（１１）の側壁部内面形成部に切込みヒン
ジ形成プレート（１３）を突設し、該プレート（１３）
を前記底部（１）を構成する型窩内に所定のヒンジの厚
みを残すように進入させ、前記型窩内に発泡性樹脂ビー
ズ（１６）を充填し、加熱成形することを特徴とする発
泡合成樹脂製組立箱の製造方法を、及び 本発明の第３は、コア金型（１１）とキャビティ金型
（１２）により、底部（１）とその周囲に立設される側
壁部（２）とからなる、断面が凹形状の型窩を形成し、
前記コア金型（１１）の側壁部内面形成部に切込みヒン
ジ形成プレート（１３）を突設し、前記底部（１）を構
成する型窩内の、該プレート（１３）の延長線上にヒン
ジ補強部（１７）を設け、前記プレート（１３）を前記
底部（１）を構成する型窩内に所定のヒンジの厚みを残
すように進入させ、前記型窩内に発泡性樹脂ビーズ（１
６）を充填し、加熱して仮融着させ、冷却後微小間隔型
開し、前記ヒンジ補強部（１７）に補強部用発泡性樹脂
ビーズを充填した後型閉し、加熱して本融着させること
を特徴とする発泡合成樹脂製組立箱の製造方法を、それ
ぞれ内容とするものである。That is, a first aspect of the present invention is an assembly box made of a foamed synthetic resin, which is composed of a bottom portion and a side wall portion that is erected around the bottom portion via a notch hinge portion, wherein the notch hinge portion is inside the side wall portion. According to the second aspect of the present invention, the bottom (1) and its periphery are provided by the core mold (11) and the cavity mold (12). To form a mold cavity having a concave cross section, which is composed of a side wall portion (2) standing upright
A notch hinge forming plate (13) is provided in a protruding manner on the side wall inner surface forming portion of the core mold (11), and the plate (13) is formed.
A foaming resin bead (16) is filled in the mold cavity to leave a predetermined thickness of the hinge, and the mold cavity is heat-molded. A method of manufacturing a synthetic resin assembly box, and a third aspect of the present invention is to provide a bottom part (1) and a side wall part (2) standing around the bottom part (1) by a core mold (11) and a cavity mold (12). Forming a mold cavity with a concave cross section consisting of
A notch hinge forming plate (13) is provided so as to protrude from the side wall inner surface forming portion of the core mold (11), and hinge reinforcement is provided on an extension line of the plate (13) in the mold cavity forming the bottom portion (1). A part (17) is provided, the plate (13) is inserted into the mold cavity forming the bottom part (1) so as to leave a predetermined hinge thickness, and the expandable resin beads (1) are inserted into the mold cavity.
6) is filled, heated for temporary fusion bonding, cooled, opened with a minute interval, and the hinge reinforcing portion (17) is filled with expandable resin beads for reinforcing portion, and then the die is closed and heated for main melting. A method for manufacturing a foamed synthetic resin assembly box, which is characterized in that the content is attached, is included.
尚、本発明の組立箱は、上記の如き容器本体のみで使用
される他、後記する如く必要に応じて蓋体と共に使用さ
れることは勿論である。The assembly box of the present invention can be used not only with the container body as described above but also with the lid as required as will be described later.
本発明を実施例を示す図面に基づいて説明する。 The present invention will be described with reference to the drawings illustrating an embodiment.
第１図は本発明組立箱の断面図で、底部（１）の周囲に
切込みヒンジ部（３）を介して側壁部（２）が立設され
て容器本体が構成されている。（４）は蓋体である。上
記切込みヒンジ部（３）は側壁部（２）の内表面の延長
線上に垂直に前記底部（１）に設けられている。FIG. 1 is a sectional view of the assembly box of the present invention, in which a side wall portion (2) is erected around a bottom portion (1) through a cut hinge portion (3) to form a container body. (4) is a lid. The cut hinge part (3) is provided on the bottom part (1) perpendicularly to the extension of the inner surface of the side wall part (2).
本発明の組立箱は、その容器本体が通常の容器の金型成
形と同様に、立体形状で成形することができる点が特徴
の一つである。One of the features of the assembly box of the present invention is that the container body can be molded in a three-dimensional shape, as in the case of mold molding of a normal container.
即ち、例えば第１図に示した容器本体は、第２図に示し
た如き装置を用いて製造することができる。該装置はコ
ア金型（１１）とキャビティ金型（１２）により、底部
（１）とその周囲に立設される側壁部（２）とからなる
断面が凹形状の型窩が形成され、上記コア金型（１２）
の側壁部内面形成部に切込みヒンジ形成プレート（１
３）が突設されている。該プレート（１３）は隣接する
容器本体の側壁部を分離させ、且つ底部に、その外側を
ヒンジ部として機能させる厚さだけ残して内側より切り
込みを入れるためのもので、シンチュウ、砲金等から作
られる。ヒンジ部の厚さは容器の大きさ、樹脂の種類、
発泡倍率、スキン層の有無等により一概に規定できない
が、通常、0.5〜数mm程度が好適である。（１４）は充
填器、（１５）は蒸気孔である。That is, for example, the container body shown in FIG. 1 can be manufactured by using the apparatus as shown in FIG. In the apparatus, a core mold (11) and a cavity mold (12) form a mold cavity having a concave cross section composed of a bottom part (1) and a side wall part (2) standing upright around the bottom part (1). Core mold (12)
The notch hinge forming plate (1
3) is projected. The plate (13) separates the side wall portions of the adjacent container bodies, and makes a notch from the inside at the bottom leaving a thickness that allows the outside to function as a hinge portion. To be The thickness of the hinge part depends on the size of the container, the type of resin,
Although it cannot be specified unconditionally depending on the foaming ratio, the presence or absence of a skin layer, etc., it is usually about 0.5 to several mm. (14) is a filler, and (15) is a steam hole.
上記装置において、充填器（１４）を通じて発泡性樹脂
ビーズ（１６）を型窩内に充填し、蒸気により加熱成形
した後、冷却して取り出すと、第１図に示した容器本体
を得ることができる。第３図は該容器本体を展開した状
態の概要図である。（１）は底部、（２）は側壁部、
（３）はヒンジ部である。第１２図に示した従来品の展
開図と比較すれば、ヒンジ部の違いが明白である。In the above apparatus, the expandable resin beads (16) are filled in the mold cavity through the filling machine (14), heat-molded with steam, and then cooled and taken out to obtain the container body shown in FIG. it can. FIG. 3 is a schematic view of the container body in a developed state. (1) is the bottom part, (2) is the side wall part,
(3) is a hinge part. When compared with the developed view of the conventional product shown in FIG. 12, the difference in the hinge portion is obvious.
本発明において、側壁部と底部の周囲の切込みヒンジ部
は上記プレート（１３）により分離されるが、更に側壁
部同士の接合部は切込みヒンジ部（３）を形成するため
のプレートと類似のプレートであって、側壁部同士の接
合部に、後に例示する如き所望の合欠り構造に互いに分
離した状態で形成させるためのプレート（１３）の形状
により、例えば第４図乃至第６図に示す如き各種の合欠
り構造とすることができる。また、上記接合部は、第７
図に示す如き、金属製、プラスチック製等のコーナー止
め具（５）を用いて固定することができる。本発明にお
いて、蓋体の形状、構造は何ら制限はなく、内ハメ式外
ハメ式、その他が用いられる。本発明の組立箱を倉庫等
に保管したり輸送する場合は、蓋体と容器本体とを分離
し、容器本体は切込みヒンジ部を介して側壁部を倒した
シート状で、即ち第３図に示した如き状態で積層して保
管又は輸送できるので広い保管スペースを必要とせず、
また輸送効率も良好である。In the present invention, the notch hinges around the side wall and the bottom are separated by the plate (13), and the joint between the side walls is a plate similar to the plate for forming the notch hinge (3). FIG. 4 to FIG. 6 show the shapes of the plates (13) for forming the desired notch structure, which will be illustrated later, in a state where they are separated from each other at the joint between the side walls. It is possible to have various cutout structures as described above. Further, the above-mentioned joining portion is the seventh
As shown in the figure, it can be fixed using a corner stopper (5) made of metal, plastic or the like. In the present invention, the shape and structure of the lid body are not limited at all, and an inner-screw type outer-saddle type or the like is used. When the assembled box of the present invention is stored or transported in a warehouse or the like, the lid body and the container body are separated, and the container body is in the form of a sheet in which the side wall portion is laid down via the notch hinge portion, that is, as shown in FIG. Since it can be stacked or stored or transported in the state shown, it does not require a large storage space,
The transportation efficiency is also good.
本発明に用いられる発泡合成樹脂としては、ポリスチレ
ン系樹脂、ポリスチレンやポリプロピレン等のポリオレ
フィン系樹脂、ポリウレタン系樹脂等が用いられる。As the foamed synthetic resin used in the present invention, polystyrene resin, polyolefin resin such as polystyrene and polypropylene, polyurethane resin, etc. are used.
第８図は本発明組立箱の他の実施例を示す断面図で、第
１図に示す如き構造の組立箱において、切込みヒンジ部
（３）の近傍部の底部（１）の外側に補強部（６）が設
けられている。FIG. 8 is a cross-sectional view showing another embodiment of the assembly box of the present invention. In the assembly box having the structure shown in FIG. 1, a reinforcing portion is provided outside the bottom portion (1) near the cut hinge portion (3). (6) is provided.
該補強部（６）は後加工により合成樹脂シート（又はフ
ィルム）やゴムシート等を接着、溶着することも可能で
あるが、２層成形により一体的に成形する方法が好適で
ある。A synthetic resin sheet (or film), a rubber sheet or the like can be adhered and welded to the reinforcing portion (6) by post-processing, but a method of integrally forming by two-layer molding is preferable.
２層成形により補強部を設けるには、例えば第９図に示
した如き装置を用いることができる。To provide the reinforcing portion by two-layer molding, for example, an apparatus as shown in FIG. 9 can be used.
第９図の装置は、第２図に示した装置において、切込み
ヒンジ形成プレート（１３）の延長線上の型窩外側にヒ
ンジ補強部（１７）が付設されている。The apparatus shown in FIG. 9 is different from the apparatus shown in FIG. 2 in that a hinge reinforcing portion (17) is attached to the outside of the mold cavity on the extension line of the notch hinge forming plate (13).
まず、前記した如く、充填器（１４）を通じて発泡性樹
脂ビーズを型窩内に充填して、蒸気により加熱して仮融
着させる。仮融着とは型開によって仮融着物が崩れない
程度に、且つ次の補強部を融着成形する本融着の際に蒸
気が内部に迄浸透するように、発泡樹脂ビーズ間に間隙
が存在する状態を云う。この場合の条件は樹脂の種類、
成形体の厚さ等により一概には規定できないが、低圧
（0.4kg/cm2程度迄、より好ましくは0.2kg/cm2程度迄）
乃至常圧下での一方加熱が好適である。First, as described above, the expandable resin beads are filled in the mold cavity through the filling device (14) and heated by steam to be temporarily fused. What is temporary fusion? There is a gap between the foamed resin beads so that the temporary fusion product does not collapse due to mold opening, and vapor penetrates into the interior during the main fusion when the next reinforcement is fusion-molded. The state that exists. The conditions in this case are the type of resin,
Although the flatly by the thickness or the like of the molded body can not be specified, a low pressure (0.4 kg / cm up to 2 mm, more preferably up to about 0.2 kg / cm 2)
To one-side heating under normal pressure is preferable.
次に、必要に応じて軽く冷却した後微小間隔（補強部厚
み分）型開し、補強部用の発泡性樹脂ビーズを充填器
〔図示してないが、補強部（１７）に設置〕を通じて充
填した後、型閉を行い、本融着させ、補強部（６）を容
器本体のヒンジ部（３）付近の底部（１）に一体化さ
せ、第８図に示す容器本体が得られる。Then, if necessary, after lightly cooling, the mold is opened at a minute interval (corresponding to the thickness of the reinforcing portion), and the expandable resin beads for the reinforcing portion are inserted through a filling device (not shown, but installed in the reinforcing portion (17)). After the filling, the mold is closed, the main fusion is performed, and the reinforcing part (6) is integrated with the bottom part (1) near the hinge part (3) of the container body to obtain the container body shown in FIG.
第１０図は第８図に示した容器本体の展開図である。FIG. 10 is a development view of the container body shown in FIG.
上記の方法においては、仮融着の際に、ヒンジ補強部
（１７）内にも若干量の容器本体用の発泡性樹脂ビーズ
が侵入し仮融着され、この後微小間隙（例えば上記樹脂
ビーズの侵入によりヒンジ補強部内の容積が減少した
分）型開して補強部用発泡性樹脂ビーズを充填し、本融
着させるので、補強部（６）及びその近辺の底部（１）
は一種の圧縮成形が為される結果、柔軟性が増し、ヒン
ジ部として好適な性質を備えるに至る。In the above method, during temporary fusion, a small amount of the expandable resin beads for the container body also penetrates into the hinge reinforcing portion (17) to be temporarily fused, and then the minute gap (for example, the resin beads described above). Since the volume inside the hinge reinforcement portion is reduced by the invasion of the hinge) The mold is opened to fill the foamable resin beads for the reinforcement portion and the main fusion is performed. Therefore, the reinforcement portion (6) and the bottom portion (1) in the vicinity thereof are filled.
As a result of being subjected to a kind of compression molding, the flexibility is increased and the hinge portion has suitable properties.
容器本体が例えば発泡ポリスチレンで成形されるような
場合、補強部用の樹脂としては柔軟性を備え、優れた曲
げ強度を有し、且つ発泡ポリスチレンとの接着性ないし
は相互親和性のある樹脂が好適で、スチレンとエチレン
等のオレフィンとの共重合体あるいは含浸共重合体で且
つ発泡性である、例えば「ピオセラン」（商品名、積水
化成品工業（株）製）等を挙げることができる。When the container body is formed of expanded polystyrene, for example, a resin having flexibility, excellent bending strength, and adhesiveness or mutual affinity with expanded polystyrene is preferable as the resin for the reinforcing portion. Examples thereof include a copolymer of styrene and an olefin such as ethylene or an impregnated copolymer and having foamability, such as "PIOCELAN" (trade name, manufactured by Sekisui Plastics Co., Ltd.).
補強部を設けるか否かは、容器本体用に用いられる樹脂
の種類、収容される内容物の重量等に依るが、一般的に
云ってポリオレフィン系樹脂の場合は優れた曲げ強度等
を有するので補強部を必要としない場合が多く、ポリス
チレン系樹脂の場合は通常補強板を設けるのが好ましい
場合が多い。補強部の素材としては、オレフィン・スチ
レン共重合樹脂や容器本体の素材と同質の素材を用いて
成形後圧縮したもの等が好適である。Whether or not to provide the reinforcing portion depends on the type of resin used for the container body, the weight of the contents to be contained, etc., but generally speaking, the polyolefin resin has excellent bending strength and the like. In many cases, a reinforcing portion is not required, and in the case of polystyrene resin, it is often preferable to provide a reinforcing plate. As a material of the reinforcing portion, an olefin / styrene copolymer resin or a material of the same quality as the material of the container body, which is molded and then compressed, is preferable.
叙上の通り、本発明によれば、 切込みヒンジ部がコーナー部に存在しないので、コー
ナー部が摩耗や破損しても該ヒンジ部の強度には影響が
なく、耐久性が大巾に向上する、 上記の如く、ヒンジ部の強度が低下しないので、重量
の大きい内容物を収容することができる。特に請求項２
の如く補強部を設けることにより、重量物の収容能力は
更に大きくなる、 通常の容器の成形の如く、立体形状での成形が可能で
あるので、金型の取り数が多くなり、組立箱のコスト・
ダウンを図ることができる、 保管時や輸送時には、容器本体を側壁部を倒したシー
ト状で保管・輸送できるので省スペースである、 等の多くの利点を備え、その有用性は頗る大である。As described above, according to the present invention, since the notch hinge portion does not exist in the corner portion, even if the corner portion is worn or damaged, the strength of the hinge portion is not affected, and the durability is greatly improved. As described above, since the strength of the hinge portion does not decrease, it is possible to store a heavy content. Especially claim 2
By providing a reinforcing part like this, the capacity to store heavy objects is further increased. Since it is possible to mold in a three-dimensional shape like normal container molding, the number of molds taken increases and the assembly box cost·
It has many advantages such as that it can be downsized, and that it can be stored and transported during storage or transportation as a sheet with the side wall of the container body laid down, thus saving space, and its usefulness is outstanding. .
第１図は、本発明組立箱の実施例を示す断面図、第２図
は装置の一例を示す断面図、第３図は第１図に示した組
立箱の容器本体の展開図、第４図乃至第６図は、本発明
組立箱の側壁部同士の接合構造例を示す要部断面図、第
７図は本発明に用いられるコーナー止め具の一例を示す
斜視図、第８図は本発明組立箱の他の実施例を示す断面
図、第９図は装置の一例を示す断面図、第１０図は第８
図に示した組立箱の容器本体の展開図、第１１図乃至第
１３図は従来の組立箱（容器本体）を示し、第１１図は
成形時の展開状態を示す概要図、第１２図は第１１図に
おけるＡ−Ａ拡大断面図、第１３図は組み立てた状態を
示す断面図である。 １…底部、２…側壁部 ３…切込みヒンジ部、４…蓋体 ５…コーナー止め具、６…補強部 11…コア金型、12…キャビティ金型 13…切込みヒンジ形成プレート、14…充填器 15…蒸気孔、16…発泡性樹脂ビーズ 17…ヒンジ補強部1 is a sectional view showing an embodiment of an assembly box of the present invention, FIG. 2 is a sectional view showing an example of an apparatus, FIG. 3 is a development view of a container body of the assembly box shown in FIG. FIG. 6 to FIG. 6 are cross-sectional views of an essential part showing an example of a joint structure of side wall parts of an assembly box of the present invention, FIG. 7 is a perspective view showing an example of a corner stopper used in the present invention, and FIG. 8 is a book. Sectional drawing which shows the other Example of an invention assembly box, FIG. 9 is sectional drawing which shows an example of an apparatus, FIG. 10 is 8th.
11 to 13 are development views of the container body of the assembly box shown in the figure, FIGS. 11 to 13 show a conventional assembly box (container body), FIG. 11 is a schematic view showing a developed state at the time of molding, and FIG. FIG. 11 is an enlarged sectional view taken along the line AA in FIG. 11, and FIG. 13 is a sectional view showing an assembled state. DESCRIPTION OF SYMBOLS 1 ... Bottom part, 2 ... Side wall part 3 ... Notch hinge part, 4 ... Lid body 5 ... Corner stopper, 6 ... Reinforcing part 11 ... Core mold, 12 ... Cavity mold 13 ... Notch hinge forming plate, 14 ... Filler 15 ... Steam holes, 16 ... Foamable resin beads 17 ... Hinge reinforcement
Claims (4)
（３）を介して立設された側壁部とから構成される発泡
合成樹脂製組立箱において、前記切込みヒンジ部（３）
が前記側壁部（２）の内表面の延長線上に垂直に前記底
部（１）に設けられた発泡合成樹脂製組立箱。1. A foam synthetic resin assembly box composed of a bottom portion (1) and a side wall portion provided around the bottom portion (1) with a cut hinge portion (3) interposed therebetween, wherein the cut hinge portion (3) is provided.
Is an assembly box made of a foamed synthetic resin, which is vertically provided on the bottom portion (1) on an extension line of the inner surface of the side wall portion (2).
（１）の外側に補強部（６）を一体的に設けた請求項１
記載の組立箱。2. The reinforcing part (6) is integrally provided outside the bottom part (1) near the cut hinge part (3).
Assembly box described.
２）により、底部（１）とその周囲に立設される側壁部
（２）とからなる、断面が凹形状の型窩を形成し、前記
コア金型（１）の側壁部内面形成部に切込みヒンジ形成
プレート（１３）を突設し、該プレート（１３）を前記
底部（１）を構成する型窩内に所定のヒンジの厚みを残
すように進入させ、前記型窩内に発泡性樹脂ビーズ（１
６）を充填し、加熱成形することを特徴とする発泡合成
樹脂製組立箱の製造方法。3. A core mold (11) and a cavity mold (1)
According to 2), a mold cavity having a concave cross section, which is composed of the bottom portion (1) and the side wall portion (2) provided upright around the bottom portion (1), is formed, and the side wall inner surface forming portion of the core mold (1) is formed. A notch hinge forming plate (13) is provided so as to project, and the plate (13) is inserted into the mold cavity forming the bottom portion (1) so as to leave a predetermined hinge thickness, and a foaming resin is introduced into the mold cavity. Beads (1
6) A method for manufacturing a foam synthetic resin assembly box, which comprises filling and heat molding.
２）により、底部（１）とその周囲に立設される側壁部
（２）とからなる、断面が凹形状の型窩を形成し、前記
コア金型（１１）の側壁部内面形成部に切込みヒンジ形
成プレート（１３）を突設し、前記底部（１）を構成す
る型窩内の、該プレート（１３）の延長線上にヒンジ補
強部（１７）を設け、前記プレート（１３）を前記底部
（１）を構成する型窩内に所定のヒンジの厚みを残すよ
うに進入させ、前記型窩内に発泡性樹脂ビーズ（１６）
を充填し、加熱して仮融着させ、冷却後微小間隔型開
し、前記ヒンジ補強部（１７）に補強部用発泡性樹脂ビ
ーズを充填した後型閉し、加熱して本融着させることを
特徴とする発泡合成樹脂製組立箱の製造方法。4. A core mold (11) and a cavity mold (1)
According to 2), a mold cavity having a concave cross section, which is composed of the bottom portion (1) and the side wall portion (2) provided upright around the bottom portion (1), is formed, and the inner wall surface forming portion of the side wall portion of the core mold (11) is formed. A notch hinge forming plate (13) is projectingly provided, and a hinge reinforcing portion (17) is provided on an extension line of the plate (13) in the mold cavity forming the bottom portion (1), and the plate (13) is The expandable resin beads (16) are introduced into the mold cavity forming the bottom portion (1) so as to leave a predetermined hinge thickness.
Is filled with heat to temporarily fuse, and after cooling, the die is opened at a minute interval, the hinge reinforcing portion (17) is filled with the expandable resin beads for the reinforcing portion, and then the die is closed and heated to perform the main fusion. A method of manufacturing a foam synthetic resin assembly box, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63098548A JPH062502B2 (en) | 1988-04-20 | 1988-04-20 | Foam synthetic resin assembly box and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63098548A JPH062502B2 (en) | 1988-04-20 | 1988-04-20 | Foam synthetic resin assembly box and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01279046A JPH01279046A (en) | 1989-11-09 |
| JPH062502B2 true JPH062502B2 (en) | 1994-01-12 |
Family
ID=14222742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63098548A Expired - Lifetime JPH062502B2 (en) | 1988-04-20 | 1988-04-20 | Foam synthetic resin assembly box and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062502B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4516850B2 (en) * | 2005-01-21 | 2010-08-04 | みのる化成株式会社 | Double-walled box-shaped blow-molded product and method for producing the same |
| JP4933074B2 (en) * | 2005-09-27 | 2012-05-16 | ダイハツ工業株式会社 | Foam filler for tubular members |
| JP5097469B2 (en) * | 2007-07-31 | 2012-12-12 | キョーラク株式会社 | Hinged plastic molding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6330799Y2 (en) * | 1979-07-16 | 1988-08-17 | ||
| JPS602439A (en) * | 1983-06-20 | 1985-01-08 | 柴田 昌一 | Manufacture of bent section in folding box, etc. |
-
1988
- 1988-04-20 JP JP63098548A patent/JPH062502B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01279046A (en) | 1989-11-09 |
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