JPH0132769B2 - - Google Patents
Info
- Publication number
- JPH0132769B2 JPH0132769B2 JP56065874A JP6587481A JPH0132769B2 JP H0132769 B2 JPH0132769 B2 JP H0132769B2 JP 56065874 A JP56065874 A JP 56065874A JP 6587481 A JP6587481 A JP 6587481A JP H0132769 B2 JPH0132769 B2 JP H0132769B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded product
- undercut
- molding
- skin layer
- 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
- 238000000465 moulding Methods 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 8
- 238000010137 moulding (plastic) Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 10
- 238000007666 vacuum forming Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002650 laminated plastic Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/34—Moulds for undercut articles
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
- B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
Description
【発明の詳細な説明】
イ 発明の目的
〔産業上の利用分野〕
本発明は、車両・建物その他各種機器の内装等
に用いられるアンダーカツト部分を有する表皮層
の裏面に、そのアンダーカツト部分の内空を含め
て基体層を積層したプラスチツク成形物品を成形
製造する型に関する。DETAILED DESCRIPTION OF THE INVENTION A. Purpose of the invention [Industrial field of application] The present invention provides a method for applying an undercut portion to the back surface of a skin layer having an undercut portion used for the interior of vehicles, buildings, and other various types of equipment. The present invention relates to a mold for molding and manufacturing a plastic molded article in which base layers are laminated including the inner cavity.
アンダーカツト部分を成形する型部分を中空体
で作り、圧力流体によりふくらませて所定の型形
状を保ち、成形後流体を抜いて中空体を潰して成
形品の離型を行う技術は、例えば特開昭53―
16765号、同昭55―103357号公報に開示されてい
る。
The technique of making the mold part for molding the undercut part with a hollow body, inflating it with pressure fluid to maintain the predetermined shape of the mold, and releasing the molded product by removing the fluid and crushing the hollow body after molding is disclosed in, for example, Japanese Patent Application Publication No. Showa 53-
It is disclosed in No. 16765 and Publication No. 103357 of 1983.
しかし本発明の目的とするアンダーカツト部分
１―１（第１図）を有する表皮層１の裏面に、そ
のアンダーカツト部分１―１の内空を含めて基体
層２を積層したプラスチツク成形物品を成形する
型は、開発されていないようである。
However, the object of the present invention is to create a plastic molded article in which a base layer 2 is laminated on the back surface of a skin layer 1 having an undercut portion 1-1 (Fig. 1), including the inner space of the undercut portion 1-1. It seems that no mold has been developed.
本発明は、上記のような積層プラスチツク成形
品を製造する成形用型を提供するものである。 The present invention provides a mold for producing a laminated plastic molded article as described above.
ロ 発明の構成
〔問題点を解決するための手段〕
本発明は、真空吸引孔６を有する型体の開口端
面３―２に、圧力流体により所定形状を保持して
成形品１にアンダーカツト部分１―１を形成する
ための中空可撓性の型部分５を一体に取付け、そ
の型部分５に流体出入管１０を備えた真空成形型
３と、その型３による成形品１を該型３に保持さ
せたまま、そのアンダーカツト部分１―１の開口
面１―２に沿つて篏合し、該成形品１のアンダー
カツト部分１―１の内空を含む全裏面に、基体層
２を積層成形するためのキヤビテイを該裏面との
間に形成し、かつ該基体層２となる溶融樹脂の射
出孔１１を備えた射出成形型４とからなるプラス
チツク成形用型である。B. Structure of the Invention [Means for Solving the Problems] The present invention provides an undercut portion to the molded product 1 by maintaining a predetermined shape with a pressure fluid on the open end surface 3-2 of the mold body having the vacuum suction hole 6. A vacuum forming mold 3 is integrally attached with a hollow flexible mold part 5 for forming the mold part 1-1, and the mold part 5 is equipped with a fluid inlet/output pipe 10. While holding the undercut portion 1-1, the molded product 1 is fitted along the opening surface 1-2 of the undercut portion 1-1, and the base layer 2 is applied to the entire back surface of the undercut portion 1-1 of the molded product 1, including the inner space. This is a plastic molding mold comprising an injection molding mold 4 having a cavity for laminated molding formed between the back surface thereof and an injection hole 11 for the molten resin which will become the base layer 2.
真空成形型３の開口端面３―２に設けたアンダ
ーカツト部分１―１を成形する中空の型部分５
に、射出成形樹脂圧力により圧縮しない圧力を保
つ圧力油を注入して、その型部分５の形状を保つ
て表皮層１を真空成形する。
Hollow mold part 5 for molding the undercut part 1-1 provided on the open end surface 3-2 of the vacuum forming mold 3
Pressurized oil is injected into the injection molding resin to maintain a non-compressing pressure, and the skin layer 1 is vacuum-formed while maintaining the shape of the mold portion 5.
その成形品１を真空成形型３に保持させた状態
で、アンダーカツト部分１―１に形成された表皮
層１の開口面１―２に沿つて射出成形型４を、真
空成形型３内に嵌合させて成形された表皮層１の
全裏面との間に基体層成形用キヤビテイを形成さ
せて型締めし、基体層となる溶融樹脂を射出成形
する。 With the molded product 1 held in the vacuum mold 3, the injection mold 4 is inserted into the vacuum mold 3 along the opening surface 1-2 of the skin layer 1 formed in the undercut portion 1-1. A cavity for molding the base layer is formed between the entire back surface of the fitted and molded skin layer 1, the molds are clamped, and the molten resin that will become the base layer is injection molded.
射出樹脂が冷却し基体層が形成された後、射出
成形型４を開き、アンダーカツト部分成形用の中
空型部分５を油を抜いて押し潰して積層成形品を
取り出すものである。 After the injected resin has cooled and a base layer has been formed, the injection mold 4 is opened, and the hollow mold part 5 for molding the undercut part is drained of oil and crushed to take out the laminate molded product.
以下図面について実施例を説明する。第１図は
本発明による製品を例示するもので、１は表皮
層、１―１はそのアンダーカツト部分、２は裏面
の基体層で表皮層１のアンダーカツト部分１―１
の内空（凹み面１―４の内方空間）まで形成す
る。その製品は例えば第２図の裏面図に示すよう
に輪郭隅丸長方形で、その表皮層１は四周裏面に
横断面略コ字形或いはＵ字形等のアンダーカツト
部分１―１を有するパネルである。
Examples will be described below with reference to the drawings. FIG. 1 illustrates a product according to the present invention, where 1 is a skin layer, 1-1 is an undercut portion thereof, and 2 is a base layer on the back side, which is an undercut portion 1-1 of the skin layer 1.
(inner space of concave surfaces 1-4). The product is, for example, a panel with a rectangular outline with rounded corners as shown in the back view of FIG. 2, and the skin layer 1 has an undercut portion 1-1 having a substantially U-shaped or U-shaped cross section on the back surface of the four peripheries.
第３図は本発明の成形型を例示する縦断面図を
示すもので、表皮層１を成形する真空成形型３に
成形した表皮層１をそのまま保持させた状態にお
いて、該型３を雌型とし、これに溶融樹脂の射出
孔１１を有する射出成形型４を雄型として篏合し
て型締めし、この雄型と成形表皮層１の全裏面と
の間のキヤビテイ内に表皮層１に対する基体層２
を形成して積層成形体を製造するものである。 FIG. 3 shows a vertical cross-sectional view illustrating the mold of the present invention, in which the vacuum mold 3 for molding the skin layer 1 holds the molded skin layer 1 as it is, and the mold 3 is moved into the female mold. An injection mold 4 having an injection hole 11 for molten resin is fitted to this as a male mold and the mold is clamped. Base layer 2
A laminated molded body is manufactured by forming a laminate.
真空成形型３において、５は成形する表皮層１
四周のアンダーカツト部分１―１を成形する型部
分、６は型成形面各部に開口させた数多の真空吸
引孔、７は型内部の真空チヤンバで、各真空吸引
孔６はこのチヤンバに連通している。図に省略し
た真空ポンプで、真空チヤンバ内の空気が配管８
を介して吸引排除される。９は型内に埋設した型
冷却用配管である。 In the vacuum forming mold 3, 5 is the skin layer 1 to be formed.
A mold part for molding the four-circumference undercut part 1-1, 6 is a number of vacuum suction holes opened in each part of the molding surface, 7 is a vacuum chamber inside the mold, and each vacuum suction hole 6 communicates with this chamber. are doing. A vacuum pump (not shown) pumps air inside the vacuum chamber to pipe 8.
is suctioned through. 9 is a mold cooling pipe buried in the mold.
その成形品のアンダーカツト部分１―１を成形
する中空可撓性型部分５は、本例の場合鋼板等を
折り曲げて作つた剛性ケース部材５―１に基部を
収容して該ケース部材５―１と一体化し、そのケ
ース部材５―１を型体の開口端面３―２に一体に
取付けてある。又該型部分５は樹脂射出圧に充分
に対向できるように内部に油を導入して内圧を加
えるようにした。又材質は、耐油・耐熱性に優れ
るものにした。 In this example, the hollow flexible mold part 5 for forming the undercut part 1-1 of the molded product is housed in a rigid case member 5-1 made by bending a steel plate or the like, and the base thereof is housed in the case member 5-1. 1, and its case member 5-1 is integrally attached to the open end surface 3-2 of the mold body. In addition, oil was introduced into the mold portion 5 to apply internal pressure so that it could sufficiently oppose the resin injection pressure. The material is also excellent in oil and heat resistance.
以上の構成において成形手順は
(1) 型開きした状態において、型部分５の内空に
油を管１０から注入して内圧を上昇させて該型
部分５を所定型形状の剛体状態に保持させる。 In the above configuration, the molding procedure is (1) With the mold open, oil is injected into the interior of the mold part 5 from the pipe 10 to increase the internal pressure and maintain the mold part 5 in a rigid state with a predetermined mold shape. .
(2) 表皮層１の素材板をアンダーカツト部分１―
１を形成する型部分５の上に展張してシールク
ランプ１６で四周を保持する。(2) Undercut part 1 of the material plate of skin layer 1.
1 and held on all four sides by seal clamps 16.
(3) 管８から空気を吸引して表皮層材を真空成形
処理して図示のように表皮層１を成形する。(3) Air is sucked through the tube 8 and the skin layer material is vacuum-formed to form the skin layer 1 as shown in the figure.
表皮層材は熱可塑性樹脂の軟質或いは半硬質
シート、該シート裏面に更に加熱成形性のある
クツシヨン材層を裏打ちした積層体、加熱伸び
を有する織布・不織布等の裏面に同じくクツシ
ヨン材層などを裏打ちしたものなどである。 The skin layer material is a soft or semi-rigid sheet of thermoplastic resin, a laminate in which the back side of the sheet is further lined with a heat-formable cushion material layer, or a cushion material layer on the back side of a woven fabric or non-woven fabric that can be stretched by heat. For example, it is lined with
該表皮層材の裏面側には必要に応じて射出樹
脂と熱融着する同系樹脂シートを貼り合わせ処
理しておくか、基体層２との接着剤を塗布処理
しておく。 On the back side of the skin layer material, a resin sheet of the same type that is heat-sealed to the injection resin is pasted or an adhesive with the base layer 2 is applied, if necessary.
(4) 表皮層１の真空成形後その成形表皮層をその
まま型成形面を保持させ、そのアンダーカツト
部分１―１の開口面１―２に沿つて射出成形型
４を嵌合して型締めし、表皮層裏面との間のキ
ヤビテイ内に射出孔１１から溶融樹脂を射出し
て表皮層１の裏面に、そのアンダーカツト部分
１―１の内空（アンダーカツト部分１―１の下
部凹み面１―４の内方空間）にまで基体層２を
成形被着させる。(4) After vacuum forming the skin layer 1, the molded skin layer is held as it is, and the injection mold 4 is fitted along the opening surface 1-2 of the undercut portion 1-1, and the mold is clamped. Then, the molten resin is injected from the injection hole 11 into the cavity between the back surface of the skin layer 1 and the inside cavity of the undercut portion 1-1 (the lower concave surface of the undercut portion 1-1). The base layer 2 is molded and applied up to the inner space 1-4).
(5) 型冷却用配管９，１２による型冷却、射出樹
脂２の冷却硬化後、型開きする。(5) After the mold is cooled by the mold cooling pipes 9 and 12 and the injected resin 2 is cooled and hardened, the mold is opened.
(6) 真空成形型３側のアンダーカツト型部分５か
ら油を積極的に排出させて該部分５の内空を負
圧化することにより基部側ケース部材５―１内
に点線示５のようにしぼみ引込み状態にさせ
る。即ち型部分５はしぼみにより成形品のアン
ダーカツト部分１―１から逃げた状態となり、
従つて成形品を支障なく型３内から離型させる
ことができる。(6) By actively discharging oil from the undercut mold part 5 on the vacuum forming mold 3 side and creating a negative pressure in the inner space of the part 5, the inside of the base side case member 5-1 is filled as shown by the dotted line 5. Let it deflate and retract. That is, the mold part 5 is in a state of escape from the undercut part 1-1 of the molded product due to deflation,
Therefore, the molded product can be released from the mold 3 without any trouble.
型３，４の型開に先立ち型部分５をしぼみ動
作させ、次いで型開きに連動するエジエクタピ
ンで成形品を型３内から突き出し離形させる手
順でもよい。 The procedure may be such that, prior to opening the molds 3 and 4, the mold portion 5 is deflated, and then the molded product is ejected from the mold 3 using an ejector pin that is interlocked with the mold opening to release the mold.
(7) 離形させた成形品は次いでその有効成形領域
まわりの不要材料部分をトリミング処理して第
１図の製品とする。(7) The released molded product is then trimmed to remove unnecessary material around the effective molding area, resulting in the product shown in Figure 1.
尚、１３は溶融樹脂射出孔１１位置に対面する
表皮層１の裏面が、射出樹脂の大きな圧力と熱を
受けて溶融等のトラブルを防止するために、該表
皮層の裏面部分に予め添着処理した石綿・金属
板・紙片等の防熱・防圧片で、表皮層の真空成形
後ロボツト装置等で自動的に添着させるものであ
る。なお該片１３は最終的に成形品内に残存す
る。 In addition, 13 is a pre-adhesion treatment applied to the back side of the skin layer 1 facing the position of the molten resin injection hole 11 in order to prevent troubles such as melting due to the large pressure and heat of the injected resin. This is a heat-insulating/pressure-insulating piece made of asbestos, metal plate, paper, etc., which is automatically attached using a robot device or the like after vacuum forming the skin layer. Note that the piece 13 ultimately remains within the molded product.
第４図はアンダーカツト型部分５を横断面三角
形状に構成したものの例の一部断面図を示すもの
である。 FIG. 4 shows a partial sectional view of an example in which the undercut type portion 5 has a triangular cross section.
第３図・第４図中１４は真空成形型３に於いて
型部分３―１とアンダーカツト型部分５との境界
線部分が成形品面に転写されないように、アンダ
ーカツト部分を成形する型部分５を含めて該型３
の有効成形面全域に形成したつぎ目のない連続弾
性被覆である。 In FIGS. 3 and 4, 14 is a mold for forming the undercut part in the vacuum forming mold 3 so that the boundary line between the mold part 3-1 and the undercut mold part 5 is not transferred to the surface of the molded product. The mold 3 including part 5
It is a seamless, continuous elastic coating formed over the entire effective molding surface.
尚、前記アンダーカツト型部分５の内空に流体
を導入して内圧上昇で該型部分を剛体状態にさせ
たとき該型部分の膨張に基づく過度の形状くずれ
を防止するために必要に応じて例えば型部分５の
内面にキヤンバス布・弾発性金網など抗張性で柔
軟なシート材を貼り込む、またはそのようなシー
ト材を型部分の肉厚内に存在させる。あるいは型
部分の内面間に金属鎖のようなフレキシブルな抗
張保形部材１５を具備させる等の処置をするもの
である。 In addition, when fluid is introduced into the inner space of the undercut mold part 5 to make the mold part into a rigid state due to an increase in internal pressure, in order to prevent excessive deformation due to expansion of the mold part, as necessary. For example, a tensile and flexible sheet material such as canvas cloth or elastic wire mesh is pasted on the inner surface of the mold part 5, or such a sheet material is made to exist within the thickness of the mold part. Alternatively, a flexible tensile shape-retaining member 15 such as a metal chain is provided between the inner surfaces of the mold portions.
ハ 発明の効果
以上の構成であるから、目的成形品の表皮層に
入り込み程度のかなり大きいアンダーカツト部を
有するものでも、のアンダーカツトの内空まで基
体層の積層成形を、型を割り型構成にしなくとも
その成形品の離型を支障なく容易に行うことがで
きる。C. Effects of the Invention With the above configuration, even if the molded product has a fairly large undercut that can penetrate into the skin layer, the mold can be laminated and molded to the inside of the undercut. The molded product can be easily released from the mold without any trouble.
第１図は本発明による成形品の縦断面図、第２
図は成形品の裏面図、第３図は本発明成形型の縦
断面図、第４図は変形例の同図。
１は表皮層、２は基体層、３は真空成形型、４
は射出成形型、５はアンダーカツト部分１―１を
成形する中空可撓性型部分、６は真空吸引孔、１
０は圧力流体出入管、１１は溶融樹脂射出孔、１
６はシールクランプ。
Fig. 1 is a longitudinal sectional view of a molded product according to the present invention, Fig.
The figure is a back view of the molded product, FIG. 3 is a longitudinal sectional view of the mold of the present invention, and FIG. 4 is the same view of a modified example. 1 is a skin layer, 2 is a base layer, 3 is a vacuum mold, 4
1 is an injection mold, 5 is a hollow flexible mold part for molding the undercut part 1-1, 6 is a vacuum suction hole, 1
0 is a pressure fluid inlet/outlet pipe, 11 is a molten resin injection hole, 1
6 is the seal clamp.
Claims (1)
流体により所定形状を保持して成形品にアンダー
カツト部分を形成するための中空可撓性の型部分
を一体に取付け、その型部分に流体出入管を備え
た真空成形型と、その型による成形品を該型に保
持させたまま、そのアンダーカツト部分の開口面
に沿つて篏合し、該成形品のアンダーカツト部分
の内空を含む全裏面に、基体層を積層成形するた
めのキヤビテイを該裏面との間に形成し、かつ該
基体層となる溶融樹脂の射出孔を備えた射出成形
型とからなることを特徴とするプラスチツク成形
用型。1. A hollow flexible mold part for forming an undercut part in a molded product by holding a predetermined shape with pressure fluid is integrally attached to the open end surface of a mold body having a vacuum suction hole, and the mold part is filled with fluid. A vacuum molding mold equipped with an inlet/outlet pipe and a molded product formed by the mold are fitted together along the opening surface of the undercut portion of the molded product while being held in the mold, and the molded product includes the inner cavity of the undercut portion of the molded product. Plastic molding comprising an injection mold having a cavity formed on the entire back surface for laminated molding of a base layer between the back surface and an injection hole for molten resin that will become the base layer. Usage type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6587481A JPS57178812A (en) | 1981-04-30 | 1981-04-30 | Mold for molding plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6587481A JPS57178812A (en) | 1981-04-30 | 1981-04-30 | Mold for molding plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57178812A JPS57178812A (en) | 1982-11-04 |
| JPH0132769B2 true JPH0132769B2 (en) | 1989-07-10 |
Family
ID=13299554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6587481A Granted JPS57178812A (en) | 1981-04-30 | 1981-04-30 | Mold for molding plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57178812A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59152105A (en) * | 1983-02-15 | 1984-08-30 | シ−ケ−デイ株式会社 | Method of molding packing vessel |
| JPS59215816A (en) * | 1983-05-23 | 1984-12-05 | Mitsuboshi Belting Ltd | Mold for vacuum forming |
| TW311896B (en) * | 1995-06-07 | 1997-08-01 | Elliot Younessian | |
| KR100352504B1 (en) * | 1999-10-12 | 2002-09-11 | 창 우 문 | Horizontal processing method of the rear base panel for plane television and the base panel manufactured by that method |
| GB201615213D0 (en) * | 2016-09-07 | 2016-10-19 | Univ Of Bristol The | Vacuum forming a laminate charge |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316765A (en) * | 1976-07-31 | 1978-02-16 | Meiwa Sangyo | Vacuum forming die |
| JPS55103357A (en) * | 1979-01-31 | 1980-08-07 | Kanegafuchi Chemical Ind | Mold and method for molding fabric having undercut by heat |
-
1981
- 1981-04-30 JP JP6587481A patent/JPS57178812A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316765A (en) * | 1976-07-31 | 1978-02-16 | Meiwa Sangyo | Vacuum forming die |
| JPS55103357A (en) * | 1979-01-31 | 1980-08-07 | Kanegafuchi Chemical Ind | Mold and method for molding fabric having undercut by heat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57178812A (en) | 1982-11-04 |
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