JPS5934491B2 - Manufacturing method for synthetic resin gloves - Google Patents
Manufacturing method for synthetic resin glovesInfo
- Publication number
- JPS5934491B2 JPS5934491B2 JP57093850A JP9385082A JPS5934491B2 JP S5934491 B2 JPS5934491 B2 JP S5934491B2 JP 57093850 A JP57093850 A JP 57093850A JP 9385082 A JP9385082 A JP 9385082A JP S5934491 B2 JPS5934491 B2 JP S5934491B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- plug
- resin sheet
- product
- molding
- 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
- 229920003002 synthetic resin Polymers 0.000 title claims description 37
- 239000000057 synthetic resin Substances 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 description 20
- 239000000047 product Substances 0.000 description 15
- 239000013067 intermediate product Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 11
- 238000000071 blow moulding Methods 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000012467 final product Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- -1 polyethylene Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002699 waste material 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
- B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 この発明は、合成樹脂グローブの製法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing synthetic resin gloves.
合成樹脂グローブの製法のひとつに、つぎのような方法
がある。射出成形法によつて有底筒状の中間品（パリリ
ン）を予め製作しておき、この中間品を棒状の加熱具に
装着して軟化させたのち、成形型内において圧縮空気で
膨ませることによつて所望のグローブ形状に成形すると
いう方法がそれである。この方法は、いわゆるブロー成
形によつて目的の製品形状に成形するようにしているた
め、量産化に適し、合成樹脂グローブを安価に提供する
ことを可能とさせる。また、射出成形法のみもしくはブ
ロー成形法のみによつて製品を得る場合に比し、飾りイ
ンサートが可能であり、軽量化も可能であるほか、歪み
の少ない製品が得やすいという利点もある。しかし、こ
の発明者の検討したところによれば、以下に述べるよう
な問題点を持つため、この従来法はいまだ充分に満足し
うるといえるものではない。すなわち、射出成形によつ
て中間品を予め製作しておき、これを加熱してブロー成
形するという方法であるため、成形サイクルが長い。射
出成形後一旦冷却した中間品を再加熱してブロー成形す
るという方法であるため、エネルギーの無、駄がある。
一旦冷却された中間品を、これに挿入した棒状の加熱具
のみで均一に加熱し軟化させるといラことは極めて困難
である。したがつて、この工程に多くの技術的工夫と手
間、費用が要求され、しかもなお適用範囲に制約を受け
るほか、十分なる均一加熱が得られない結果、最終製品
の性状に肉厚不均一、影ができ易いなどの問題が残る。
中間品を射出成形で得ているため、金型費が余分にかさ
み、かつ中間品に残るゲート跡が最終製品の外観を悪化
させるという重大な欠点も持つ。この発明は、以上の事
情に鑑み、上記従来の方法における諸問題を一挙に解決
することを目的とする。One of the methods for manufacturing synthetic resin gloves is as follows. A cylindrical intermediate product with a bottom (parin) is manufactured in advance using the injection molding method, this intermediate product is attached to a rod-shaped heating tool to soften it, and then expanded with compressed air in a mold. This method involves molding it into the desired glove shape using a method. Since this method uses so-called blow molding to mold into the desired product shape, it is suitable for mass production and makes it possible to provide synthetic resin gloves at low cost. Furthermore, compared to the case where a product is obtained only by injection molding or blow molding, it is possible to have decorative inserts, it is possible to reduce the weight, and it also has the advantage that it is easier to obtain a product with less distortion. However, according to the inventor's studies, this conventional method cannot be said to be fully satisfactory due to the following problems. That is, since the intermediate product is manufactured in advance by injection molding and then heated and blow molded, the molding cycle is long. Since the method involves cooling the intermediate product after injection molding and then reheating it for blow molding, there is a waste of energy.
It is extremely difficult to uniformly heat and soften the intermediate product once it has been cooled using only a rod-shaped heating tool inserted into the intermediate product. Therefore, this process requires a lot of technical innovation, effort, and cost, and is still limited in its scope of application.As a result of not being able to achieve sufficient uniform heating, the properties of the final product may include uneven wall thickness, Problems such as easy shadow formation remain.
Since the intermediate product is obtained by injection molding, there is a serious drawback in that the mold cost increases and the gate marks left on the intermediate product deteriorate the appearance of the final product. In view of the above circumstances, it is an object of the present invention to solve all the problems in the above conventional methods at once.
この発明にかかる合成樹脂グローブの製法は、加熱によ
り軟化した合成樹脂シートを、その周囲はクランプする
がこのクランプ部とプラグ先端との間は無拘束の状態で
、棒状のプラグで押したのち真空で引いてこのプラグに
密着させ、引続き成形型内において圧縮空気で膨ませる
ことによつて所望のグローブ形状に成形することを特徴
としている。The method of manufacturing the synthetic resin glove according to the present invention is to clamp the synthetic resin sheet softened by heating, but with no restraint between the clamp part and the tip of the plug, press it with a rod-shaped plug, and then vacuum It is characterized in that it is pulled tightly against the plug and then inflated with compressed air in a mold to form the desired glove shape.
以下に、実施例をあげてこれを詳しく説明する。第１図
にみるように、ブロー成形用の分割金型２ａ、２ｂ上に
クランプ３が配置され、その上方に棒状のプラグ４が配
置された成形装置が準備されている。This will be explained in detail below using examples. As shown in FIG. 1, a molding apparatus is prepared in which a clamp 3 is placed on split molds 2a and 2b for blow molding, and a rod-shaped plug 4 is placed above the clamp 3.
分割金型２ａ，２ｂは左右に分かれて待機しており、ク
ランプ３には合成樹脂シート１が水平にはさまれている
。合成樹脂シート１は、ポリメチルメタアクリレート、
ポリスチレン、ＡＢＳ，．ＡＳｌポリアセタール、ポリ
エチレン、ポリカーボネート、ポリエステル、ポリプロ
ピレン、塩化ビニルなど、目的とするグローブを作るの
に適した合成樹脂材料を、通常、ほぼ均一厚みのシート
状に成形して得られたものである。合成樹脂シート１は
、通常、合成樹脂材料を加熱軟化させてシート状に成形
した直後、所望の寸法に切断ピて直ちにクランプされる
。そのため、クランプされたときにはすでに、以後の成
形操作を施すのに適した軟化状態にある。しかし、冷却
状態下の合成樹脂シートを予め加熱軟化させてクランプ
したり、クランプ後に加熱して軟化させたりすることも
ある。プラグ４を下降させて、加熱により軟化した合成
樹脂シート１を第２図にみるようにその球形の先端で垂
直に押し、金型２ａ，２ｂ内に伸ばす。The split molds 2a and 2b are separated into left and right parts and are on standby, and the synthetic resin sheet 1 is horizontally held between the clamps 3. The synthetic resin sheet 1 is made of polymethyl methacrylate,
Polystyrene, ABS, . It is usually obtained by molding a synthetic resin material suitable for making the desired glove, such as ASl polyacetal, polyethylene, polycarbonate, polyester, polypropylene, or vinyl chloride, into a sheet of approximately uniform thickness. The synthetic resin sheet 1 is usually immediately after heating and softening a synthetic resin material to form it into a sheet shape, cutting it into desired dimensions, and immediately clamping it. Therefore, when it is clamped, it is already in a softened state suitable for subsequent molding operations. However, the synthetic resin sheet in a cooled state may be heated and softened in advance before being clamped, or may be heated and softened after being clamped. The plug 4 is lowered, and the synthetic resin sheet 1 softened by heating is pushed vertically with its spherical tip as shown in FIG. 2, and stretched into the molds 2a and 2b.
クランプ３の開口部５は非常に広いので、プラグ４によ
つて押された合成樹脂シート１は、左右に開いた金型２
ａ，２ｂ内に充分な量だけ伸びて入る。図中、１ａはこ
の伸びて金型内に入つた部分をあられす。プラグ４は、
内部に室６を持ち、周壁に通気孔７を数個持つ。Since the opening 5 of the clamp 3 is very wide, the synthetic resin sheet 1 pressed by the plug 4 is inserted into the mold 2 which is opened left and right.
It extends a sufficient amount and enters inside a and 2b. In the figure, 1a indicates the part that has expanded and entered the mold. Plug 4 is
It has a chamber 6 inside and several ventilation holes 7 on the peripheral wall.
室６はプラグ操作軸８の取付部内に形成された通路９を
介して真空装置および圧縮空気発生装置（いずれも図示
せず）に通じている。そこで、まず真空装置を作動させ
て、軟化状態にある合成樹脂シート１の金型２ａ，２ｂ
内に入つた部分１ａをプラグの通気孔７を通じて直ちに
真空で引き、第３図にみるようにプラグ４に密着させる
。図中、１ｂはこの密着した合成樹脂シートをあられす
。そして、分割金型２ａ、２ｂを第４図にみるように直
ちに閉じ、次に圧縮空気発生装置を作動させて、プラグ
４に密着した軟化状態の合成樹脂シート１ｂを、引続き
金型２ａ，２ｂ内において、プラグの通気孔７から噴出
する圧縮空気で膨ませ、第５図にみるように型面１０ａ
，１０ｂに密着させて、所望のグローブ形状にブロー成
形する。金型２ａ，２ｂ内に得られた成形品１１は、冷
却後、第６図にみるごとくプラグ４を上げ、金型２ａ，
２ｂを開き、クランプ３を開いて、取り出す。The chamber 6 communicates with a vacuum device and a compressed air generator (both not shown) via a passage 9 formed in the mounting portion of the plug operating shaft 8. Therefore, first, the vacuum device is activated to remove the molds 2a and 2b of the synthetic resin sheet 1 which are in a softened state.
The portion 1a that has entered inside is immediately evacuated through the vent hole 7 of the plug and brought into close contact with the plug 4 as shown in FIG. In the figure, 1b indicates this tightly adhered synthetic resin sheet. Then, the divided molds 2a and 2b are immediately closed as shown in FIG. The inside of the plug is inflated with compressed air blowing out from the vent hole 7 of the plug, and the mold surface 10a is molded as shown in FIG.
, 10b and blow molded into the desired glove shape. After cooling, the molded product 11 obtained in the molds 2a, 2b is placed in the molds 2a, 2b by raising the plug 4 as shown in FIG.
2b, open the clamp 3, and take it out.
上記実施例にみたように、クランプの開口部５を広くし
ておくと、合成樹脂シート１をプラグ４で押したとき、
この広い口径分全部の樹脂材料が伸びるので、真空で引
いたときプラグ４に密着する樹脂材料１ｂの量は、金型
２ａ，２ｂを閉じたのちプラグ４で押す場合に比し多く
なる。As seen in the above embodiment, if the opening 5 of the clamp is made wide, when the synthetic resin sheet 1 is pressed with the plug 4,
Since all of the resin material stretches by this wide diameter, the amount of resin material 1b that comes into close contact with the plug 4 when vacuumed is greater than when the molds 2a and 2b are closed and then the plug 4 is pressed.
したがつて、合成樹脂シート１１の厚みを薄くしておく
ことができ、後加熱の場合は軟化時間が短くてすむほか
、軟化度の不均一が避けやすい。この発明の方法によつ
て得られるグローブとは、普通には照明器具用グロープ
を指すが、それ以外の用途に用いられる容器一般も含み
得る。Therefore, the thickness of the synthetic resin sheet 11 can be kept thin, and in the case of post-heating, the softening time can be shortened, and unevenness in the degree of softening can be easily avoided. The glove obtained by the method of the present invention generally refers to a glove for lighting equipment, but may also include containers in general used for other purposes.
成形型の型面形状や合成樹脂シートの固定手段は上記実
施例のものに限られることはなく、また真空の引き方や
圧縮空気による膨ませ方もプラグを用いた実施例の方法
に限られるものでない。The mold surface shape of the mold and the means for fixing the synthetic resin sheet are not limited to those of the above embodiments, and the method of drawing a vacuum and the method of inflating with compressed air is also limited to the method of the embodiments using a plug. It's not something.
前記従来法は、ブロー成形用の中間品を射出成形により
得るようにしているため。一旦冷却したものをブロー成
形時再加熱するしかなく、エネルギー消費の無駄を避け
ることができないのに対し、この発明にかかる合成樹脂
グローブの製法は、合成樹脂シートを材料とするため、
成形により得た合成樹脂シートを直ちにブロー成形する
ことが容易であり、したがつて従来のごとき再加熱工程
を無くし、エネルギーコストを低減することが可能であ
る。前記従来法は、射出成形→冷却→再加熱→ブロー成
形というサイクルを経ているため、成形サイクルが長い
のに対し、この発明の方法では合成樹脂シートの成形→
フロー成形というサイクルでもつて一貫生産を行なうこ
とができるため、成形サイクルが極めて短くなり、能率
的である。従来法は射出成形用金型を必要とするため、
金型代がかさむのに対し、この発明の方法にはそのよう
な不利益がない。従来法では有底筒形の中間品に棒状の
加熱具を挿着して加熱軟化するようにしているため、こ
の工程に多くの技術的困難やコスト上の不利益を伴いや
すく、しかもなお均一加熱が困難なため、最終製品の性
状に肉厚不均一などの問題を残すことが避けられない。
これに対し、こＱ発明の方法では、合成樹脂シートの軟
化は合成樹脂シート成形直後の軟化状態をそのまま利用
するのが通常であるため、技術上の困難やコスト上の不
利益を何ら伴うことなく、理想的な均一軟化状態を得る
ことができ、良質の製品が得られやすい。予め成形され
た合成樹脂シートを加熱して用いる場合であつても、平
らなシートの加熱であるため、加熱が容易であり、かつ
均一加熱に何らの困難もなく、したがつてやはり良質の
製品を得やすい。従来法は、射出成形時中間品に生じた
ゲート跡が最終製品に残るため、製品の外観が悪くなる
のを避けることができないのに対し、この発明の方法は
、合成樹脂シートを真空で引いでプラグに密着させたの
ちブロー成形して製品を得ているため、製品にゲート跡
を生じることがなく、外観の良い製品を得ることができ
る。この発明の方法では、軟化状態の合成樹脂シートを
プラグで押して仲ばす際に、合成樹脂シートを、その周
囲はクランプするが、このクランプ部とプラグ先端との
間は無拘束の状態（自由に伸びることを許容する状態）
とするので、十分な量の樹脂を金型内に送り込むことが
でき、しかも、伸び終わるまではプラグに真空吸着しな
いので、クランプ部とブラグ先端との間で伸び状態の均
一化（肉厚の均一化）が図られ、肉厚の均一な製品を得
ることを可能とさせる。This is because, in the conventional method, an intermediate product for blow molding is obtained by injection molding. Once cooled, there is no choice but to reheat it during blow molding, and wasted energy consumption cannot be avoided, whereas the method for manufacturing synthetic resin gloves according to the present invention uses synthetic resin sheets as the material.
It is easy to immediately blow mold the synthetic resin sheet obtained by molding, and therefore it is possible to eliminate the conventional reheating step and reduce energy costs. The conventional method has a long molding cycle because it goes through a cycle of injection molding → cooling → reheating → blow molding, whereas the method of the present invention involves the steps of molding a synthetic resin sheet →
Since integrated production can be carried out using the flow molding cycle, the molding cycle is extremely short and efficient. Since the conventional method requires an injection mold,
Whereas mold costs are high, the method of the present invention does not have such disadvantages. In the conventional method, a rod-shaped heating tool is inserted into the bottomed cylindrical intermediate product to heat and soften it, which tends to involve many technical difficulties and cost disadvantages. Since heating is difficult, it is inevitable that problems such as uneven wall thickness will remain in the properties of the final product.
On the other hand, in the method of this Q invention, the softening of the synthetic resin sheet is usually made by directly utilizing the softened state immediately after molding the synthetic resin sheet, so it does not involve any technical difficulties or cost disadvantages. Therefore, it is possible to obtain an ideal uniform softening state, making it easy to obtain a high-quality product. Even when heating a pre-formed synthetic resin sheet, it is easy to heat because it is a flat sheet, and there is no difficulty in uniform heating, resulting in a high quality product. Easy to get. In the conventional method, the gate marks created on the intermediate product during injection molding remain on the final product, which inevitably deteriorates the appearance of the product.In contrast, the method of the present invention involves pulling the synthetic resin sheet under vacuum. Since the product is obtained by blow molding after closely adhering to the plug, there are no gate marks on the product, and a product with a good appearance can be obtained. In the method of this invention, when a softened synthetic resin sheet is pressed with a plug to break it up, the synthetic resin sheet is clamped around the synthetic resin sheet, but the area between this clamp part and the tip of the plug is in an unrestricted state (freely). condition that allows stretching)
This allows a sufficient amount of resin to be fed into the mold, and since it is not vacuum-adsorbed to the plug until the resin has finished elongating, it is possible to make the elongation state uniform between the clamp part and the plug tip (thickness of the wall thickness). This makes it possible to obtain products with uniform wall thickness.
この発明にかかる合成樹脂グローブの製法は、前記のご
とくにして製品を得ているため、従来と同様、量産化に
適し、合成樹脂グロープを安価に提供し得るものであつ
て、射出成形法のみやブロー成形法のみによつて製品を
得る場合に比し、飾りインサートが可能であり、軽量化
も可能であるほか、歪みの少ない製品が得やすいという
利点も持つことは勿論である。The method for manufacturing synthetic resin gloves according to the present invention is suitable for mass production as in the past, since the product is obtained as described above, and can provide synthetic resin gloves at low cost. It goes without saying that compared to the case where a product is obtained only by the blow molding method, decorative inserts can be made, the weight can be reduced, and it is easier to obtain a product with less distortion.
第１図ないし第６図はこの発明にかかる合成樹脂グロー
ブの製法の１実施例をあられす工程説明図である。
１・・・・・・合成樹脂シート、１ｂ・・・・・・プラ
グに密着した軟化状態の合成樹脂シート、２ａ，２ｂ・
・・・・・分割金型、３・・・・・・クランプ、４・・
・・・・プラグ、５・・・・・・開口部、６・・・・・
・室、７・・・・・・通気孔、９・・・・・・通路、１
０ａ，１０ｂ・・・・・・型面、１１・・・・・・成形
品。FIGS. 1 to 6 are process explanatory diagrams illustrating one embodiment of the method for manufacturing a synthetic resin glove according to the present invention. 1...Synthetic resin sheet, 1b...Synthetic resin sheet in a softened state in close contact with the plug, 2a, 2b.
...Divided mold, 3...Clamp, 4...
...Plug, 5...Opening, 6...
・Room, 7... Ventilation hole, 9... Passage, 1
0a, 10b...Mold surface, 11...Molded product.
Claims (1)
クランプするがこのクランプ部とプラグ先端との間は無
拘束の状態で、棒状のプラグで押したのち、真空で引い
てこのプラグに密着させ、引続き成形型内において圧縮
空気で膨ませることによつて所望のグローブ形状に成形
することを特徴とする合成樹脂グローブの製法。1. Clamp the synthetic resin sheet softened by heating, but leave the space between this clamp part and the tip of the plug unrestricted, press it with a rod-shaped plug, and then pull it with a vacuum to bring it into close contact with the plug. A method for producing a synthetic resin glove, which comprises forming the glove into a desired glove shape by subsequently inflating it with compressed air in a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093850A JPS5934491B2 (en) | 1982-05-31 | 1982-05-31 | Manufacturing method for synthetic resin gloves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57093850A JPS5934491B2 (en) | 1982-05-31 | 1982-05-31 | Manufacturing method for synthetic resin gloves |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58209531A JPS58209531A (en) | 1983-12-06 |
| JPS5934491B2 true JPS5934491B2 (en) | 1984-08-23 |
Family
ID=14093881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57093850A Expired JPS5934491B2 (en) | 1982-05-31 | 1982-05-31 | Manufacturing method for synthetic resin gloves |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5934491B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244671U (en) * | 1985-09-04 | 1987-03-18 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959317B (en) | 2011-03-16 | 2016-08-17 | 松下知识产权经营株式会社 | Light-emitting device and method for manufacturing synthetic resin lampshade for the light-emitting device |
-
1982
- 1982-05-31 JP JP57093850A patent/JPS5934491B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244671U (en) * | 1985-09-04 | 1987-03-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58209531A (en) | 1983-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63249616A (en) | Method for molding resin | |
| JPS6141290B2 (en) | ||
| CA1099883A (en) | Deep-draw thermoforming of thermoplastic sheet | |
| GB2182601A (en) | Moulding expanded resin cups | |
| JPS5934491B2 (en) | Manufacturing method for synthetic resin gloves | |
| WO1997020677A3 (en) | Method of manufacturing containers | |
| CN1035753C (en) | Plastics sheet heat moulding method and the apaparatus thereof | |
| CA1317078C (en) | Method for producing decorative seams on films shaped by drawing method, and apparatus for performing the method | |
| JP3430182B2 (en) | Thermoforming method and thermoforming equipment for crystalline resin sheet | |
| JPS6229210B2 (en) | ||
| US5972278A (en) | Method of forming synthetic resin formed articles | |
| JPH08281779A (en) | Hollow body manufacturing method | |
| JPS5923536B2 (en) | Plastic container manufacturing method and manufacturing equipment | |
| JP3025424B2 (en) | Method for producing molded body having double walls | |
| EP0451447A1 (en) | Method of forming synthetic resin formed articles | |
| JP3803946B2 (en) | Vacuum forming method | |
| JPS6326689B2 (en) | ||
| JPS592818A (en) | Stretch blow molding method | |
| JPH0566250B2 (en) | ||
| JPH02248232A (en) | Production of vessel fitted with tongue piece for hanging | |
| JPH0446902Y2 (en) | ||
| JPH04336237A (en) | Container fitted with hanger and manufacture thereof | |
| JP4562994B2 (en) | Method and apparatus for producing heat-resistant polyester cup | |
| JP3233973B2 (en) | Manufacturing method of molded product with skin | |
| JPH01316250A (en) | Manufacture of foam molded product with skin material |