JPS6149102B2 - - Google Patents
Info
- Publication number
- JPS6149102B2 JPS6149102B2 JP56165595A JP16559581A JPS6149102B2 JP S6149102 B2 JPS6149102 B2 JP S6149102B2 JP 56165595 A JP56165595 A JP 56165595A JP 16559581 A JP16559581 A JP 16559581A JP S6149102 B2 JPS6149102 B2 JP S6149102B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- semi
- finished product
- cooled
- male
- 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
Links
- 238000000034 method Methods 0.000 claims description 21
- 239000000047 product Substances 0.000 claims description 19
- 239000011265 semifinished product Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000005187 foaming Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 5
- 238000004320 controlled atmosphere Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 13
- 229920003002 synthetic resin Polymers 0.000 description 6
- 239000000057 synthetic resin Substances 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
Landscapes
- Molding Of Porous Articles (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は食品、嗜好品或いは機械、器具など
の緩衝材として用いられる発泡樹脂製成形物の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a foamed resin molded article used as a cushioning material for foods, luxury goods, machines, appliances, etc.
従来この種の成形物は雄、雌一組の型によつて
まず素材を加熱し次いで同一型内でそのまま冷却
するという方法により製造されていたが、最近こ
の従来の方法に比較して、エネルギ、製造時間と
もに節約できる方法が提案された。この方法に用
いられる装置は、それぞれ平行な2つのプレート
と該プレート間に設けた四辺形の枠とからなる2
つの型を備えている。この2つの型には同一の枠
が共用されており、加熱型から冷却型に移送され
る間成形物はこの枠内に残つている。枠は、2つ
の平行なプレートの間又は成形物の変形或いは膨
張特に移送中の発泡終了を防止するため互いに隣
接して並置されたロールの間に成形物を保持しな
がら、両型間を移動する。それ故この製造方法に
おいてはプレート状の成形物しか製造できない。
成形物を他の形状に加工したい場合には、冷却状
態の成形プレートを冷却型より取り出した後これ
をさらにプレス加工する必要がある。 Conventionally, this type of molded product was manufactured by first heating the material using a pair of male and female molds, and then cooling it as it was within the same mold, but recently, compared to this conventional method, energy consumption has increased. , a method was proposed that could save both manufacturing time. The device used in this method consists of two parallel plates and a quadrilateral frame between the plates.
It has two types. The two molds share the same frame, in which the molded product remains while being transferred from the heating mold to the cooling mold. The frame moves between the two molds, holding the molding between two parallel plates or between rolls juxtaposed next to each other to prevent deformation or expansion of the molding or termination of foaming, especially during transport. do. Therefore, with this production method, only plate-shaped molded products can be produced.
If it is desired to process the molded product into another shape, it is necessary to further press the molded plate after taking it out from the cooling mold.
この方法と同様に第1の型から第2の型に成形
物を移送するようにした別の方法も公知である。
しかしこの方法においては、第1の型では合成樹
脂製小球の発泡しか生じさせず、第2の型内で各
成形サイクル毎に加熱し次いで冷却し、全成形加
工を行なつている。 Another method is also known in which a molded product is transferred from a first mold to a second mold similarly to this method.
However, in this method, only the foaming of the synthetic resin globules occurs in the first mold, and the entire molding process is performed in the second mold by heating and then cooling for each molding cycle.
さらに別の公知の方法としては、発泡性樹脂を
型に供給する前に熱処理を加えて発泡終了に近い
状態にし、次いで高温の樹脂をプレス型に入れて
圧縮と結合を同時に進行させながら成形物を作
り、該プレス型内で成形物を冷却するものもあ
る。しかしながらこの方法においても成形物を型
内に入れたまま各製造サイクル毎にプレス型の加
熱と冷却を行なわなければならないので相当のエ
ネルギと時間の無駄が生じる。また成形物も気泡
が不均質なものとなる。 Another known method is to apply heat treatment to the foamable resin before supplying it to the mold to bring it to a state close to the completion of foaming, and then place the hot resin into a press mold to simultaneously advance compression and bonding to form a molded product. There is also a method in which the molded product is cooled in the press mold. However, even in this method, the press mold must be heated and cooled during each production cycle while the molded product remains in the mold, resulting in a considerable waste of energy and time. Moreover, the molded product also has non-uniform bubbles.
この発明の目的はエネルギ及び時間ともに節約
できしかも品質の優れた任意形状の製品を製造す
ることのできる発泡樹脂製成形物の製造方法を提
供することである。 An object of the present invention is to provide a method for producing a molded article made of foamed resin, which saves both energy and time, and allows the production of products of any desired shape with excellent quality.
この発明になる方法は全体として以下のように
進行する。 The method according to the invention generally proceeds as follows.
(a) 予発泡された合成樹脂製小球は所定加熱温度
に維持・制御され、比較的熱膨張率の小さい材
料からつくられた閉鎖状型に供給されるこの予
発泡された合成樹脂製小球はこの加熱された型
に供給される際には完成成形物とほぼ同一の密
度を有している。(a) The pre-foamed synthetic resin small spheres are maintained and controlled at a predetermined heating temperature, and the pre-foamed synthetic resin small spheres are fed into a closed mold made of a material with a relatively low coefficient of thermal expansion. When the spheres are fed into this heated mold, they have approximately the same density as the finished mold.
(b) 合成樹脂製小球はこの加熱された型内におい
て例えば蒸気などの加熱手段により加熱され可
塑化する。小球は蒸気とともにこれを膨張させ
る発泡媒体すなわち促進媒体(例えばメタン)
を含んでいる。小球は膨張時に生じる圧力によ
り互いに結合する。(b) The synthetic resin pellets are heated and plasticized in this heated mold by a heating means such as steam. The globules are expanded with steam by a foaming or promoting medium (e.g. methane)
Contains. The globules are held together by the pressure created during expansion.
(c) このようにして形成された半製品は加熱され
た型より取出され型の外で発泡を終了する。こ
れは自由な雰囲気中でも制御下の雰囲気中でも
よい。その結果小球内部に断熱弛緩状態が生じ
前記促進媒体と蒸気が凝縮する。この時点では
まだ冷却は十分に行なわれていないから、この
半製品は可塑成形加工し得る状態にある。他
方、半製品が取除かれて、内壁面が露出された
型は空気、冷媒(たとえば水で)を用いて、そ
の内壁面が冷却される。(c) The semi-finished product thus formed is removed from the heated mold and foaming is completed outside the mold. This may be in a free atmosphere or in a controlled atmosphere. As a result, an adiabatic relaxation state occurs inside the globule and the promoting medium and vapor condense. At this point, the semi-finished product has not yet been sufficiently cooled, so it is ready for plastic molding. On the other hand, the mold from which the semi-finished product has been removed and whose inner wall surface is exposed is cooled using air or a refrigerant (for example, water).
(d) まだ可塑状態にある前記半製品は次いで冷却
された型に挿入され、少なくとも型の壁部に接
触している表面の硬化により所望の完成形状に
安定せしめられる。(d) The semi-finished product, still in a plastic state, is then inserted into a cooled mold and stabilized in the desired finished shape by hardening at least of the surfaces in contact with the walls of the mold.
この発明において、前記合成樹脂製小球は外圧
の作用により結合するのではなく該小球内のガス
膨張により生じる内圧によつて結合するのである
から、製造された成形物は著しい均質性を有す
る。またこの成形物は冷却された型の形状及び寸
法に一致しており、かつ、弾性的で脆さがない。
一方、型は加熱及び冷却を繰り返されるが、型の
素材が熱伝導率が小さい物質、たとえば熱硬化性
樹脂、セラミツクス等の無機質材料からつくられ
ており、半製品を型から取り出し、その間に型穴
表面に直接冷媒を当てるなどして冷却することが
できるから、型穴表面部分のみを短時間で加熱、
冷却することができ、他方、半製品はいつたん型
外へ取り出され、外面は少なくとも一部が雰囲気
中に露出され、内部は断熱弛緩されるから、1製
造サイクル当りの時間は短縮され、エネルギも節
約される。 In this invention, the synthetic resin spherules are not bonded together by the action of external pressure but by the internal pressure generated by gas expansion within the spherules, so the manufactured molded product has remarkable homogeneity. . The molded product also conforms to the shape and dimensions of the cooled mold, and is elastic and not brittle.
On the other hand, molds are repeatedly heated and cooled, but the material of the mold is made of a material with low thermal conductivity, such as inorganic materials such as thermosetting resins and ceramics. Since the hole surface can be cooled by applying refrigerant directly to it, only the surface area of the mold hole can be heated in a short time.
On the other hand, the time per production cycle is shortened and the energy consumption is reduced, since the semi-finished product is immediately removed from the mold, the outer surface is at least partially exposed to the atmosphere, and the inner part is adiabatic and relaxed. is also saved.
なお、この発明において、加熱サイクルにおい
て型は90〜130℃、好ましくは120℃に維持され、
冷却サイクルにおいては、90℃以下の温度に維持
される。 In addition, in this invention, the mold is maintained at 90 to 130 °C, preferably 120 °C during the heating cycle,
During the cooling cycle, the temperature is maintained below 90°C.
上述の如く、この方法に用いられる装置におい
て、雄型、雌型からなる単一の型は熱伝導率の小
さい物質より形成され、また、型穴の表面を加熱
および冷却するためのそれぞれの手段が備えられ
ている。 As mentioned above, in the apparatus used in this method, a single mold consisting of a male mold and a female mold is formed of a material with low thermal conductivity, and each means for heating and cooling the surface of the mold cavity is provided. is provided.
なお、加熱、冷却を繰り返される型は全体が熱
伝導率の小さい物質からつくられていてもよい
が、その他、型穴内面のみが主として加熱、冷却
が繰り返され得る構造、たとえば熱伝導率の小さ
い物質からなる型の型穴表面に金属コート層が被
覆されているような構造のものでもよい。又、型
穴表面を加熱、冷却する手段としては型穴表面近
傍に加熱、冷却用の媒体通路を設けた型を用いる
方法、その他、型外部から気体、又は液体からな
る媒体を型穴に当接させる方法など任意の手段を
とることができよう。 Note that the entire mold that is repeatedly heated and cooled may be made of a material with low thermal conductivity, but there are also other molds that have a structure that allows only the inner surface of the mold cavity to be repeatedly heated and cooled, such as a material with low thermal conductivity. The structure may be one in which the surface of the cavity of a mold made of a substance is coated with a metal coating layer. In addition, as means for heating and cooling the surface of the mold cavity, there is a method of using a mold with a medium passage for heating and cooling near the surface of the mold cavity, and a method of applying a medium consisting of gas or liquid to the mold cavity from outside the mold. You can use any method you like, such as contacting them.
以下、この発明を図示の実施例を参照して説明
する。 The present invention will be described below with reference to illustrated embodiments.
第1図は本発明で用いられる型の一例を示す。
この型は雄型41と雌型42からなり、両型間に
は熱可塑性樹脂を充たす型穴43が形成される。
雄型41は、内部チヤネル45に接続する蒸気供
給路44を備えており、蒸気はチヤネル45内端
にあるノズル46を介して型穴43内に入ること
ができる。雌型42は熱可塑性樹脂用の円錐状供
給口47及び過剰水蒸気用の流用ノズル48を備
えており、該ノズル48は蒸気流出路49及び凝
縮物流出口50に接続されている。 FIG. 1 shows an example of a mold used in the present invention.
This mold consists of a male mold 41 and a female mold 42, and a mold cavity 43 filled with thermoplastic resin is formed between the two molds.
The male mold 41 is equipped with a steam supply path 44 that connects to an internal channel 45 , allowing steam to enter the mold cavity 43 via a nozzle 46 at the internal end of the channel 45 . The female mold 42 is equipped with a conical inlet 47 for the thermoplastic resin and a diversion nozzle 48 for excess steam, which is connected to a steam outlet 49 and a condensate outlet 50 .
前述の装置の操作開始時において、前記型の雄
型41はピストンにより型の雌型42に挿入さ
れ、製造すべき成形物に対応する形状の型穴43
を形成している。型は図示しない公知の装置によ
り加熱されている。型が原料を投入し得る状態に
なると、貯蔵容器(図示しない)内の予発泡した
ポリスチレン製小球が型穴43に供給される。ノ
ズル46より型に流入する蒸気は前記熱可塑性小
球の膨張及び結合を生じさせる。この工程が完了
した後移送部材に固定された雄型41はピストン
により第1図の左方に引出される。型穴内に形成
された半製品は雄型41に付いたままになつてお
り、また機械的拘束から解放されることによつて
自由な弛緩状態となる。 At the start of operation of the device described above, the male mold 41 of the mold is inserted by means of a piston into the female mold 42 of the mold, forming a mold cavity 43 of a shape corresponding to the molding to be produced.
is formed. The mold is heated by a known device (not shown). When the mold is ready for loading, pre-expanded polystyrene pellets in a storage container (not shown) are fed into the mold cavity 43. Steam entering the mold through nozzle 46 causes expansion and bonding of the thermoplastic globules. After this process is completed, the male mold 41 fixed to the transfer member is pulled out to the left in FIG. 1 by the piston. The semi-finished product formed in the mold cavity remains attached to the male mold 41 and becomes freely relaxed by being released from mechanical restraint.
続いて完全に弛緩状態となつた半製品は所定時
間後、型穴表面が冷却された該雌型42に再び挿
入され、製造すべき形状及び寸法に一致する成形
物が形成される。次いで、ピストンは再び第1図
の左方に動かされ、型穴に対応する完成成形品は
機械的又は空気圧的に作動されるエジエクタによ
り突出され容器内に落下する。 After a predetermined period of time, the completely relaxed semi-finished product is reinserted into the female mold 42 whose cavity surface has been cooled, and a molded product conforming to the shape and dimensions to be manufactured is formed. The piston is then moved again to the left in FIG. 1, and the finished molded part corresponding to the mold cavity is ejected by a mechanically or pneumatically actuated ejector and falls into the container.
第2図は本発明で用いられる他の実施例を示し
ている。本図に示す型は閉鎖状態にあり、雌型6
1、雄型62、型穴63、該型穴に予発泡された
合成樹脂製小球を装置65より供給する開口6
4、加熱体66及び、蒸気を供給、流出させるた
めのチヤネル67,68を有している。 FIG. 2 shows another embodiment for use with the present invention. The mold shown in this figure is in the closed state, with female mold 6
1. A male mold 62, a mold cavity 63, and an opening 6 into which pre-foamed synthetic resin beads are supplied from a device 65.
4. It has a heating element 66 and channels 67, 68 for supplying and discharging steam.
さらに変形例の1つとしては所定時間冷却され
た型に負圧を作用させることが考えられる。この
場合、発泡熱可塑性樹脂からなる前記小球内部の
相対圧力を相当高めることができ、従つて成形物
の密度すなわち重量を小さくすることが可能であ
る。 Furthermore, one possible modification is to apply negative pressure to the mold that has been cooled for a predetermined period of time. In this case, the relative pressure inside the sphere of foamed thermoplastic resin can be increased considerably, and it is therefore possible to reduce the density and therefore the weight of the molded product.
雄雌両型は同一のベースに設けてもよいしそれ
ぞれ別体のベースに設けてもよい。また、1つの
加熱した型と多数の冷却された型とを共働させて
もよいしこの逆にしてもよい。 Both male and female types may be provided on the same base, or may be provided on separate bases. Also, one heated mold and a number of cooled molds may work together, or vice versa.
半製品を加熱された型から冷却された型に移送
するための装置は機械的、空気圧的等種々の駆動
方式をとることができる。 The device for transferring the semi-finished product from the heated mold to the cooled mold can be driven by various methods such as mechanical or pneumatic.
型及び該型内の熱可塑性樹脂への熱供給は任意
の公知の手段、例えば電熱線、蒸気或いは高温オ
イルなどにより行なうことができる。 Heat can be supplied to the mold and the thermoplastic resin within the mold by any known means, such as heating wire, steam or hot oil.
以上、詳述したように本発明によれば最初に型
を加熱しこの型で前記半製品を前述のように形成
した後、この半製品を型の外で弛緩させるために
型より取り出す。この間に型穴の壁面を冷却し、
その後、再び半製品を該型内に挿入する。このよ
うな操作により冷却が促進され、製造サイクルを
短縮することができる。型の素材として用いられ
ている物質は熱伝導率が小さいから、型穴の表面
を短時間冷却するだけでは型全体が冷却されるこ
とにはならず、従つてエネルギ損失を最小にとど
めることができる。 As described in detail above, according to the present invention, the mold is first heated and the semi-finished product is formed in the mold as described above, and then the semi-finished product is removed from the mold in order to be relaxed outside the mold. During this time, the walls of the mold cavity are cooled,
Thereafter, the semi-finished product is inserted into the mold again. Such operations facilitate cooling and shorten the manufacturing cycle. Since the material used for the mold has a low thermal conductivity, cooling the surface of the mold cavity for a short period of time does not cool the entire mold, so energy loss can be kept to a minimum. can.
この発明になる方法は従来の方法により製造さ
れたものに較べて密度が大きくても柔軟性のある
成形物を製造することができる。この成形物は弾
性的で脆性が小さいから、緩衝材特に包装材とし
ての用途に著しい効果を発揮する。 The method of the present invention can produce molded products with greater flexibility than those produced by conventional methods even though they have a higher density. Since this molded product is elastic and has low brittleness, it exhibits remarkable effects when used as a cushioning material, especially as a packaging material.
第1図および第2図はこの発明になる方法に用
いられる装置を示す概略断面図である。
41……雄型、42……雌型、43……型穴、
44……蒸気供給路、45……チヤネル、46…
…ノズル、61……雌型、62……雄型、63…
…型穴、66……加熱体。
FIGS. 1 and 2 are schematic sectional views showing an apparatus used in the method of the present invention. 41...male mold, 42...female mold, 43...mold hole,
44... Steam supply path, 45... Channel, 46...
...Nozzle, 61...Female type, 62...Male type, 63...
...Mold hole, 66...Heating body.
Claims (1)
すべき最終成形物形状に対応する型穴を形成し、
比較的熱膨張率の小さい材料からつくられた雄型
及び雌型よりなる加熱された可閉性型に必要量投
入し、発泡に必要な熱エネルギーを与え、前記小
塊内の膨張内圧によつて該小塊を少なくとも部分
的に結合させ、未だ可塑化状態にあるが、製造す
べき最終成形物に対応する形状をもつ半製品に成
形し、その後、前記型を開放し、前記半製品をと
りまく全表面の少なくとも一面を雰囲気中に露出
させるとともに、上記型の少なくとも一方の型穴
内面を冷却し、ついで、上記半製品を再びこの冷
却された型内に挿入し、該型の雄、雌両型を以つ
て閉鎖し、冷却することによつて最終成形物を得
ることを特徴とする発泡樹脂成形物の製造方法。 2 前記半製品の発泡を自由な雰囲気中で終了さ
せることを特徴とする特許請求の範囲第1項記載
の製造方法。 3 前記半製品の発泡を制御下の雰囲気中で終了
させることを特徴とする特許請求の範囲第1項記
載の製造方法。 4 前記冷却された型での冷却の間該型穴内に負
圧を生じさせることを特徴とする特許請求の範囲
第1項乃至第3項のいずれか1項記載の製造方
法。 5 前記型からの取り出しおよび型への再挿入す
るための半製品の移動を雄型又は雌型の一方の少
なくとも一部を利用して行なうことを特徴とする
特許請求の範囲第1項記載の製造方法。[Claims] 1. Forming a pre-foamed thermoplastic resin in the form of small lumps into a mold hole corresponding to the shape of the final molded product to be manufactured;
The required amount is poured into a heated closed mold consisting of a male mold and a female mold made of a material with a relatively low coefficient of thermal expansion, and the thermal energy necessary for foaming is applied, and the expansion internal pressure inside the small lump The nodules are at least partially bonded and formed into a semi-finished product which is still in a plasticized state but has a shape corresponding to the final molding to be produced, after which the mold is opened and the surroundings of the semi-finished product are formed. At least one of the entire surfaces is exposed to the atmosphere and the inner surface of at least one mold cavity of the mold is cooled, and then the semi-finished product is reinserted into the cooled mold, and both the male and female parts of the mold are cooled. 1. A method for producing a foamed resin molded product, characterized in that the final molded product is obtained by closing with a mold and cooling. 2. The manufacturing method according to claim 1, characterized in that foaming of the semi-finished product is completed in a free atmosphere. 3. The manufacturing method according to claim 1, characterized in that foaming of the semi-finished product is completed in a controlled atmosphere. 4. The manufacturing method according to any one of claims 1 to 3, characterized in that a negative pressure is generated in the mold cavity during cooling in the cooled mold. 5. The method according to claim 1, characterized in that the semi-finished product is moved for removal from the mold and reinsertion into the mold using at least a part of either the male mold or the female mold. Production method.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7601160A FR2338124A1 (en) | 1976-01-16 | 1976-01-16 | Twin tool system for moulding expanded thermoplastics - for improved thermal efficiency and quicker cycles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5795426A JPS5795426A (en) | 1982-06-14 |
JPS6149102B2 true JPS6149102B2 (en) | 1986-10-28 |
Family
ID=9168043
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51120848A Expired JPS588335B2 (en) | 1976-01-16 | 1976-10-09 | Method and device for manufacturing foamed resin moldings |
JP56165595A Granted JPS5795426A (en) | 1976-01-16 | 1981-10-16 | Manufacture of foaming resin shaping |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51120848A Expired JPS588335B2 (en) | 1976-01-16 | 1976-10-09 | Method and device for manufacturing foamed resin moldings |
Country Status (7)
Country | Link |
---|---|
JP (2) | JPS588335B2 (en) |
AT (1) | AT366624B (en) |
CA (1) | CA1102066A (en) |
ES (1) | ES453117A1 (en) |
FI (1) | FI763164A (en) |
FR (1) | FR2338124A1 (en) |
NZ (1) | NZ182480A (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5549231A (en) * | 1978-10-03 | 1980-04-09 | Badische Yuka Co Ltd | Manufacturing method for foam resin formed product |
DE2847557C2 (en) * | 1978-11-02 | 1987-08-20 | Fa. E.A. Heitz, 6718 Grünstadt | Device for the production of molded parts from foam plastic |
DE2903495C2 (en) * | 1979-01-30 | 1985-02-21 | Joachim Ing.(Grad.) 7712 Blumberg Teubert | Process for the production of molded bodies from foamed plastic, in particular from foamed polystyrene |
JPS6056106B2 (en) * | 1979-12-03 | 1985-12-09 | 積水化成品工業株式会社 | Foam molding method |
JPS6056107B2 (en) * | 1979-12-04 | 1985-12-09 | 積水化成品工業株式会社 | Foam molding method |
JPS6056108B2 (en) * | 1979-12-05 | 1985-12-09 | 積水化成品工業株式会社 | Foam molding equipment |
JPS5698149A (en) * | 1980-01-07 | 1981-08-07 | Sekisui Plastics Co Ltd | Foam molding and apparatus |
JPS5653047A (en) * | 1980-04-04 | 1981-05-12 | Badische Yuka Co Ltd | Production of foamed resin molding |
JPS58183226A (en) * | 1982-04-20 | 1983-10-26 | Kanegafuchi Chem Ind Co Ltd | Method and apparatus for obtaining molding body having different density from each other |
AT385717B (en) * | 1984-10-24 | 1988-05-10 | Hirsch Kurt Kunststoff | STACKING DEVICE |
GB2465159B (en) * | 2008-11-05 | 2013-04-17 | Aston Martin Lagonda Ltd | Manufacture of a structural composites component |
GB201820560D0 (en) | 2018-12-17 | 2019-01-30 | Aston Martin Lagonda Ltd | Assemblies for engines |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4836935A (en) * | 1971-09-10 | 1973-05-31 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3676033A (en) * | 1968-04-30 | 1972-07-11 | Robert B Buonaiuto | Apparatus for making thermoplastic cellular products |
-
1976
- 1976-01-16 FR FR7601160A patent/FR2338124A1/en active Granted
- 1976-10-09 JP JP51120848A patent/JPS588335B2/en not_active Expired
- 1976-11-01 NZ NZ182480A patent/NZ182480A/en unknown
- 1976-11-04 FI FI763164A patent/FI763164A/fi not_active Application Discontinuation
- 1976-11-05 AT AT0822076A patent/AT366624B/en not_active IP Right Cessation
- 1976-11-05 CA CA265,052A patent/CA1102066A/en not_active Expired
- 1976-11-08 ES ES453117A patent/ES453117A1/en not_active Expired
-
1981
- 1981-10-16 JP JP56165595A patent/JPS5795426A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4836935A (en) * | 1971-09-10 | 1973-05-31 |
Also Published As
Publication number | Publication date |
---|---|
JPS5795426A (en) | 1982-06-14 |
FI763164A (en) | 1977-07-17 |
ATA822076A (en) | 1981-09-15 |
JPS588335B2 (en) | 1983-02-15 |
AT366624B (en) | 1982-04-26 |
FR2338124B1 (en) | 1979-08-10 |
FR2338124A1 (en) | 1977-08-12 |
ES453117A1 (en) | 1978-01-16 |
JPS5290578A (en) | 1977-07-29 |
NZ182480A (en) | 1979-10-25 |
CA1102066A (en) | 1981-06-02 |
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