JPH01156037A - Manufacture of polytetrafluoroethylene vessel - Google Patents
Manufacture of polytetrafluoroethylene vesselInfo
- Publication number
- JPH01156037A JPH01156037A JP31560087A JP31560087A JPH01156037A JP H01156037 A JPH01156037 A JP H01156037A JP 31560087 A JP31560087 A JP 31560087A JP 31560087 A JP31560087 A JP 31560087A JP H01156037 A JPH01156037 A JP H01156037A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- ptfe
- container
- tube
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 43
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 43
- -1 polytetrafluoroethylene Polymers 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 101000606535 Homo sapiens Receptor-type tyrosine-protein phosphatase epsilon Proteins 0.000 description 10
- 102100039665 Receptor-type tyrosine-protein phosphatase epsilon Human genes 0.000 description 10
- 238000010304 firing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 1
- WUMVZXWBOFOYAW-UHFFFAOYSA-N 1,2,3,3,4,4,4-heptafluoro-1-(1,2,3,3,4,4,4-heptafluorobut-1-enoxy)but-1-ene Chemical compound FC(F)(F)C(F)(F)C(F)=C(F)OC(F)=C(F)C(F)(F)C(F)(F)F WUMVZXWBOFOYAW-UHFFFAOYSA-N 0.000 description 1
- BZPCMSSQHRAJCC-UHFFFAOYSA-N 1,2,3,3,4,4,5,5,5-nonafluoro-1-(1,2,3,3,4,4,5,5,5-nonafluoropent-1-enoxy)pent-1-ene Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)=C(F)OC(F)=C(F)C(F)(F)C(F)(F)C(F)(F)F BZPCMSSQHRAJCC-UHFFFAOYSA-N 0.000 description 1
- 101000738772 Homo sapiens Receptor-type tyrosine-protein phosphatase beta Proteins 0.000 description 1
- 102100037424 Receptor-type tyrosine-protein phosphatase beta Human genes 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 101150020468 prpE gene Proteins 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はポリテトラフルオロエチレン（以下、ＰＴＰＥ
という）製容器の製造方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to polytetrafluoroethylene (hereinafter referred to as PTPE).
(2013) relates to a method for manufacturing containers.
［従来の技術］
ｐｒｐＥ製容器は耐薬品性がすぐれているので、ガラス
製容器を腐食する薬品などに対しても使用することがで
きる。[Prior Art] Containers made of prpE have excellent chemical resistance, so they can be used against chemicals that corrode glass containers.
このようなＰＴＰＥ製容器は、従来より、アイソスタテ
ィック成形法によって製造されている。Such PTPE containers have conventionally been manufactured by an isostatic molding method.
アイソスタティック成形法によるＰＴＰＥ製容器の製造
方法は、未焼成のＰＴＰＥ粉末をゴムなどの弾性体を介
して流体で加圧し、できるだけ均一な圧力分布で予備成
形したのち、えられた予備成形品を焼成してＰＴＦＥ容
器をうる方法である。The method for manufacturing PTPE containers using the isostatic molding method involves pressurizing unfired PTPE powder with a fluid through an elastic body such as rubber, preforming it with as uniform a pressure distribution as possible, and then molding the resulting preform. This is a method of obtaining a PTFE container by firing.
［発明が解決しようとする問題点］
しかしながら、前記アイソスタティック成形法において
は、未焼成のＰＴＦＥ粉末を原料としていったん予備成
形品を作製し、ついでこれを焼成するため、肉厚を１
ｍｍ程度の薄さにすることが非常に困難である。[Problems to be Solved by the Invention] However, in the above-mentioned isostatic molding method, a preform is made using unfired PTFE powder as a raw material, and then this is fired.
It is very difficult to make it as thin as mm.
また、予備成形後に焼成するので、焼成によって収縮す
るため焼成品の形状が金型形状とかなり異なるという問
題もある。Furthermore, since the material is fired after preforming, there is a problem in that the shape of the fired product is quite different from the shape of the mold because it shrinks during firing.
本発明は前記問題に鑑みてなされたものであり、肉厚が
薄く、しかもほとんど金型形状に近い製品かえられるＰ
ＴＰＥ製容器の製造方法を提供することを目的とする。The present invention was made in view of the above problems, and it is possible to change a product with a thin wall thickness and almost a mold shape.
An object of the present invention is to provide a method for manufacturing a TPE container.
［問題点を解決するための手段］
本発明は、ＰＴＦＥ管の一端を熱融着し、読管を容器金
型に設置したのち、ＰＴＦＥの軟化温度まで加熱し、読
管の他端から管内へ圧縮空気を送りこむことによって読
管を容器金型内部の形状にまで膨張させたのち、圧力を
かけたまま冷却し、冷却後、容器金型を取りはずしてＰ
ＴＦＥ製容器をうることを特徴とするＰＴＦＥ製容器の
製造方法に関する。[Means for Solving the Problems] The present invention heat-seals one end of the PTFE tube, places the reading tube in a container mold, heats it to the softening temperature of PTFE, and inserts the inside of the tube from the other end of the reading tube. After expanding the reading tube to the shape inside the container mold by sending compressed air into the container, it is cooled while applying pressure, and after cooling, the container mold is removed and the P.
The present invention relates to a method for producing a PTFE container, which is characterized by producing a TFE container.
なお、本明細書においてＰＴＰＥとは、ＰＴＦＥホモポ
リマーのほかに、パーフルオロアルキルビニルエーテル
などの共重合成分を０．０１〜１．０重量％共重合した
ものをも含む概念である。このような共重合成分を少量
共重合することにより管の熱融着が容易となるので好ま
しい。In this specification, PTPE is a concept that includes not only PTFE homopolymer but also those obtained by copolymerizing 0.01 to 1.0% by weight of a copolymer component such as perfluoroalkyl vinyl ether. It is preferable to copolymerize a small amount of such copolymerization components because it facilitates heat-sealing of the tube.
［作 用コ
本発明の方法は成形後に焼成などの工程がないので、本
発明の方法により、生産性が向上し、また、はとんど金
型形状に近い製品かえられる。[Function] Since the method of the present invention does not require a step such as firing after molding, the method of the present invention improves productivity and allows the product to be changed to a shape that is almost the same as the mold.
［実施例］
本発明に用いるＰＴＦＥ管としては、管の一端が熱融着
されたのちに、金型内で加熱および内部昇圧されて容器
に成形しうるＰＴＦＥ管であれば、とくに制限なく用い
ることができるが、成形のための管の膨張が容易である
、管の一端の熱融着が容易であるなどの点から、パーフ
ルオロアルキルビニルエーテルを０．０１〜１．０重量
９６共重合したＰＴＦＥファインパウダーを原料として
ペースト押出法によって成形したＰＴＦＥ管が好ましい
。なお、たとえばＰＴＰＥホモポリマーからなるＰＴＦ
Ｅ管を使用したばあいには、管の一端が容易に熱融着さ
れにくくなる傾向がある。[Example] As the PTFE tube used in the present invention, any PTFE tube can be used without any particular restriction as long as it can be formed into a container by heating and increasing internal pressure in a mold after one end of the tube is heat-sealed. However, from the viewpoints of easy expansion of the tube for molding and easy heat fusion of one end of the tube, perfluoroalkyl vinyl ether was copolymerized with 0.01 to 1.0 weight 96. A PTFE tube formed by a paste extrusion method using PTFE fine powder as a raw material is preferred. Note that, for example, PTF made of PTPE homopolymer
When an E tube is used, one end of the tube tends to be difficult to be heat-sealed.
前記パーフルオロアルキルビニルエーテルとしてはとく
に制限はなく、その具体例としては、たとえばパーフル
オロメチルビニルエーテル、パーフルオロエチルビニル
エーテル、パーフルオロプロピルビニルエーテルなどが
あげられる。The perfluoroalkyl vinyl ether is not particularly limited, and specific examples include perfluoromethyl vinyl ether, perfluoroethyl vinyl ether, perfluoropropyl vinyl ether, and the like.
なお、ＰＴＦＥ管の製造に用いられるペースト押出法と
は、乳化重合で製造されたＰＴＦＨのファインパウダー
に適当な有機溶剤が加えられてペースト状にされたコン
パウンドがあらかじめ円筒状に予備成形され、この予備
成形品が押出機によって連続した管形状に成形されたの
ち、乾燥工程および焼成工程をへてＰＴＦＥ管をうる方
法である。The paste extrusion method used to manufacture PTFE tubes is a paste-like compound made by adding an appropriate organic solvent to PTFH fine powder manufactured by emulsion polymerization, which is then preformed into a cylindrical shape. In this method, a preform is formed into a continuous tube shape using an extruder, and then goes through a drying process and a firing process to obtain a PTFE tube.
前記熱融着の方法にもとくに制限はなく、気密性を有す
る融着部かえられる方法であればいかなる方法をも採用
できるが、たとえば温度が３２５℃以上、好ましくは３
６０〜４００℃で、ヒートプレスすることによって充分
に熱融着させることができる。There is no particular restriction on the method of thermal fusion, and any method can be adopted as long as it can change the fused part to have airtightness.
Sufficient heat fusion can be achieved by heat pressing at 60 to 400°C.
一端が熱融着されたＰＴＦＥ管は、ついで容器金型内に
設置され、軟化温度まで加熱され、他端から圧縮空気が
送りこまれる。The PTFE tube with one end heat-sealed is then placed in a container mold, heated to a softening temperature, and compressed air is introduced from the other end.
前記加熱温度としては、一般に２８０〜３３０℃、好ま
しくは３００〜３２０℃が採用される。加熱温度が２８
０℃を下回るばあいには、軟化が不充分でボイドが少な
い成形品がえにくくなる傾向があり、逆に加熱温度が３
３０℃をこえＰＴＦＥの融点以上に達すると、局部的な
変形をおこしやすくなる傾向がある。The heating temperature is generally 280 to 330°C, preferably 300 to 320°C. Heating temperature is 28
If the heating temperature is below 0℃, the softening will be insufficient and the molded product with few voids will tend to be difficult to remove.
When the temperature exceeds 30° C. and reaches the melting point of PTFE, local deformation tends to occur easily.
前記加熱速度としてはとくに制限をうけるものではない
が、可能なかぎりすみやかに昇温するのが好ましい。Although the heating rate is not particularly limited, it is preferable to raise the temperature as quickly as possible.
前記圧縮空気の圧力はＰＴＦＥ管の膨張開始圧力（これ
は管の径および肉厚と温度で異なる）から金型の耐圧強
度までの範囲であれば目的を達成することができる。The purpose can be achieved as long as the pressure of the compressed air is in the range from the expansion start pressure of the PTFE tube (this varies depending on the diameter and wall thickness of the tube and the temperature) to the pressure resistance of the mold.
前記圧縮空気による昇圧は、加熱前から所定の圧力に負
荷をかけておくこともできるし、また、所定温度に達し
たのち、ニードルバルブのような微量調整弁からきわめ
てゆっくり所定圧力になるまで加圧することもできる。Pressure increase using compressed air can be done by applying a load to a predetermined pressure before heating, or by increasing the pressure very slowly from a micro-adjustment valve such as a needle valve until the predetermined pressure is reached after a predetermined temperature is reached. It can also be pressed.
膨張後の容器外径、すなわち、容器金型内部の形状の内
径は、用いられるＰＴＦＥの外径の約１０倍まで成形可
能であるが、５倍以下程度とするのが好ましい。The outer diameter of the container after expansion, ie, the inner diameter of the shape inside the container mold, can be molded up to about 10 times the outer diameter of the PTFE used, but is preferably about 5 times or less.
成形後の容器は、圧縮空気源に接続されたまま、すなわ
ち圧力がかけられたままで冷却され、降圧後金型が取り
はずされて容器型成形物かえられる。After the molding, the container is cooled while being connected to a compressed air source, that is, while the pressure is being applied, and after the pressure is reduced, the mold is removed and the molded container is replaced.
前記冷却の速度としては、たとえば水冷などによる急冷
を行ない、工程時間を短縮するのが好ましい。Regarding the rate of cooling, it is preferable to perform rapid cooling, for example, by water cooling, to shorten the process time.
えられた容器型成形物から、底部および口部などに残っ
ている不要な樹脂部分が切断され、所望のＰＴＦＥ製容
器かえられる。Unnecessary resin portions remaining at the bottom, mouth, etc. are cut off from the resulting container-shaped molded product, and the desired PTFE container is replaced.
えられたＰＴＰＥ製容器は、耐薬品性にすぐれており、
ガラス製容器を腐食する薬品にも使用することができ、
また他の材料製の容器の中瓶として使用することもでき
る。The resulting PTPE container has excellent chemical resistance,
It can also be used for chemicals that corrode glass containers.
It can also be used as an inner bottle for containers made of other materials.
実施例１
゛ つぎに本発明の方法の一実施例を、図面を参照しつ
つ説明する。Example 1 Next, an example of the method of the present invention will be described with reference to the drawings.
第１図は一端が熱融着されたＰＴＦＥ管が設置された容
器金型の一例を示す断面図、第２図は一端が熱融着され
たＰＴＦＥ管の一例を示す断面図、第３図は前記金型か
ら取りはずされた容器型成形品の断面図、第４図は本発
明の方法によってえられたＰＴＰＥ製容器の一例を示す
外観図である。Fig. 1 is a sectional view showing an example of a container mold in which a PTFE tube with one end heat-sealed is installed, Fig. 2 is a sectional view showing an example of a PTFE pipe with one end heat-sealed, and Fig. 3 4 is a cross-sectional view of the container-shaped molded product removed from the mold, and FIG. 4 is an external view showing an example of a PTPE container obtained by the method of the present invention.
パーフルオロアルキルビニルエーテルを０．１重量％共
重合したＰＴＦＥファインパウダーを原料として、通常
のペースト押出法により、外径８ａｍ、肉厚１１Ｉｌの
ＰＴＦＥ管を作製した。Using a PTFE fine powder copolymerized with 0.1% by weight of perfluoroalkyl vinyl ether as a raw material, a PTFE tube with an outer diameter of 8 am and a wall thickness of 11 Il was produced by a normal paste extrusion method.
えられた管の一端を３８０℃でヒートプレスして第２図
のごとき一端が熱融着されたＰＴＦＥ管（１）を作製し
た。One end of the resulting tube was heat pressed at 380° C. to produce a PTFE tube (1) with one end heat-sealed as shown in FIG.
このＰＴＦＥ管（１）を第１図のごとき容器金型に設置
し、２０分間かけて３２０℃に加熱し、管の他端から圧
縮空気を送り込み約０．５分間かけて管内を２．５ｋｇ
ｆ／ｃｄに昇圧し管を膨張させた。This PTFE pipe (1) was placed in a container mold as shown in Fig. 1, heated to 320°C for 20 minutes, and compressed air was sent from the other end of the pipe for about 0.5 minutes to blow 2.5 kg into the pipe.
The tube was expanded by increasing the pressure to f/cd.
第１図において、（２）は容器底部用金型であり、ＰＴ
ＦＥ管（１）の熱融着部分を締付けられるよう２分割構
造になっている。（３）は容器胴部用金型である。（４
）は容器口蓋部用金型であり、口蓋のねじ部が取りはず
せるように２分割になっている。In Fig. 1, (2) is a mold for the bottom of the container, and PT
It has a two-part structure so that the heat-sealed part of the FE pipe (1) can be tightened. (3) is a mold for the container body. (4
) is a mold for the container mouth, which is divided into two parts so that the threaded part of the mouth can be removed.
（５）はＰＴＦＥ管（１）内に圧縮空気を送りこむため
の接続口であり、フレアーになっている。(5) is a connection port for feeding compressed air into the PTFE pipe (1), and is flared.
ついで、圧力をかけたままの状態で水冷して常温に冷却
したのち、降圧し、金型（３）、（４）および（５）を
取りはずして、第３図のごとき容器型成形品（６）をえ
た。Next, the pressure was kept applied and water was cooled to room temperature, the pressure was lowered, and the molds (3), (4), and (5) were removed to form a container-shaped molded product (6) as shown in Figure 3. ) was obtained.
えられた容器型成形品の底部および口部から余分の樹脂
部分を切断して取り除いて、第４図のごとき外径的３６
ｍｍ ｓ肉厚０．２＋ｕのＰＴ１’Ｅ製容器（７）を
えた。The excess resin was cut and removed from the bottom and mouth of the obtained container-shaped molded product, and the outer diameter was 36 mm as shown in Fig. 4.
A container (7) made of PT1'E with a wall thickness of 0.2 mm s and 0.2 u was obtained.
このように本発明の方法によってＰＴＦＥ容器を製造す
ることによりアイソスタティック成形でえられないよう
な薄肉のものができた。また、えられたＰＴＰＥ容器の
形状および寸法は、金型の形状および寸法に対して誤差
がほとんどないものであった。これは本発明の方法によ
れば成形後に変形の原因となりうる焼成などの工程を必
要としないからである。As described above, by manufacturing a PTFE container using the method of the present invention, a container with a thin wall that cannot be obtained by isostatic molding was made possible. Furthermore, the shape and dimensions of the obtained PTPE container had almost no errors with respect to the shape and dimensions of the mold. This is because the method of the present invention does not require a process such as firing that may cause deformation after molding.
［発明の効果］
本発明によれば、薄肉のＰＴＦＥ製容器が容易に製造で
き、はとんど金型形状に近いＰＴＰＥ製容器かえられる
。[Effects of the Invention] According to the present invention, a thin-walled PTFE container can be easily manufactured, and a PTPE container that almost has the shape of a mold can be replaced.
第１図は一端が熱融着されたＰＴＦＥ管が設置された容
器金型の一例を示す断面図、第２図は一端が熱融着され
たＰＴＦＥ管の一例を示す断面図、第３図は前記金型か
ら取りはずされた容器型成形品の断面図、第４図は本発
明の方法によってえられたＰＴＰＢ製容器の一例を示す
外観図である。
（図面の主要符号）
（１） Ｓ ＰＴＦＥ管
（２）、（３）、（４）：金 型
第２図
（２）、（３）、（４）二金型
沖４図Fig. 1 is a sectional view showing an example of a container mold in which a PTFE tube with one end heat-sealed is installed, Fig. 2 is a sectional view showing an example of a PTFE pipe with one end heat-sealed, and Fig. 3 4 is a sectional view of the container-shaped molded product removed from the mold, and FIG. 4 is an external view showing an example of a PTPB container obtained by the method of the present invention. (Main symbols on the drawings) (1) S PTFE tube (2), (3), (4): Mold Fig. 2 (2), (3), (4) 2 Mold Oki Fig. 4
Claims (1)
該管を容器金型に設置したのち、ポリテトラフルオロエ
チレンの軟化温度まで加熱し、該管の他端から管内へ圧
縮空気を送りこむことによって該管を容器金型内部の形
状にまで膨張させたのち、圧力をかけたまま冷却し、冷
却後、容器金型を取りはずしてポリテトラフルオロエチ
レン製容器をうることを特徴とするポリテトラフルオロ
エチレン製容器の製造方法。 ２ ポリテトラフルオロエチレン管がパーフルオロアル
キルビニルエーテルを０．０１〜１．０重量％共重合し
たポリテトラフルオロエチレン粉末をペースト押出法に
よって成形したものである特許請求の範囲第１項記載の
方法。[Claims] 1. Heat-sealing one end of a polytetrafluoroethylene pipe,
After the tube was placed in a container mold, it was heated to the softening temperature of polytetrafluoroethylene, and compressed air was sent into the tube from the other end of the tube to expand the tube to the shape inside the container mold. A method for producing a polytetrafluoroethylene container, characterized by cooling the container while applying pressure, and removing the container mold after cooling to obtain a polytetrafluoroethylene container. 2. The method according to claim 1, wherein the polytetrafluoroethylene tube is formed by a paste extrusion method from polytetrafluoroethylene powder copolymerized with 0.01 to 1.0% by weight of perfluoroalkyl vinyl ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31560087A JPH01156037A (en) | 1987-12-14 | 1987-12-14 | Manufacture of polytetrafluoroethylene vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31560087A JPH01156037A (en) | 1987-12-14 | 1987-12-14 | Manufacture of polytetrafluoroethylene vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01156037A true JPH01156037A (en) | 1989-06-19 |
Family
ID=18067301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31560087A Pending JPH01156037A (en) | 1987-12-14 | 1987-12-14 | Manufacture of polytetrafluoroethylene vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01156037A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002102572A1 (en) * | 2001-05-30 | 2002-12-27 | Daikin Industries, Ltd. | Method for producing polytetrafluoroethylene resin formed product and resin formed product |
| JP2010527867A (en) * | 2007-05-29 | 2010-08-19 | シーディーアイ シールズ， インコーポレイテッド | Container integrally molded by blow molding with a hard fitment |
| CN103831920A (en) * | 2014-03-07 | 2014-06-04 | 丹阳市宏益精密仪器厂 | Method for manufacturing polytetrafluoroethylene small-caliber volumetric flask |
-
1987
- 1987-12-14 JP JP31560087A patent/JPH01156037A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002102572A1 (en) * | 2001-05-30 | 2002-12-27 | Daikin Industries, Ltd. | Method for producing polytetrafluoroethylene resin formed product and resin formed product |
| JP2010527867A (en) * | 2007-05-29 | 2010-08-19 | シーディーアイ シールズ， インコーポレイテッド | Container integrally molded by blow molding with a hard fitment |
| CN103831920A (en) * | 2014-03-07 | 2014-06-04 | 丹阳市宏益精密仪器厂 | Method for manufacturing polytetrafluoroethylene small-caliber volumetric flask |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4288058A (en) | Composite mold for making rubber covered rolls and method for making same | |
| JPS63222835A (en) | Manufacture of eared stretch-blown plastic bottle | |
| JPH01156037A (en) | Manufacture of polytetrafluoroethylene vessel | |
| US3649409A (en) | Process for lining a plastic cylinder with another plastic | |
| US4073856A (en) | Method of fabricating welded PFA-to-PTFE structures | |
| US4701291A (en) | Process of isostatic molding and bonding fluoropolymers | |
| JPS6259655B2 (en) | ||
| US3749542A (en) | Sealing construction for use in forming articles from styrene sheet | |
| JPS595415B2 (en) | Method for manufacturing a container made of heat-shrinkable foamed resin sheet | |
| JPH0521059B2 (en) | ||
| JPS63236621A (en) | Manufacture of molded form from defective molded form substantially constituted of polymerized unit of tetrafluoroethylene | |
| JPH07118992B2 (en) | Fluororesin rotomolded article and method for producing the same | |
| US3458903A (en) | Formation of plastic articles by employing a positive pressure | |
| JPH08322940A (en) | Tube for catheter, manufacture thereof, and manufacturing device | |
| JPH02214647A (en) | Manufacture of ultra-high-molecular weight polyethylene porous material | |
| JPH06238686A (en) | High-rigidity rotational molded form and manufacture thereof | |
| KR920002385B1 (en) | Fluororesin rotation molded articles and process for preparing same | |
| JPH11207812A (en) | Production of tetrafluoroethylene polymer molded product | |
| JPH0134669B2 (en) | ||
| JPS62201943A (en) | Porous article composed of fluororesin | |
| JPH04345836A (en) | Conductive heat-shrinkable tube and its manufacture | |
| JPH03134377A (en) | Gasket and its manufacture | |
| JPH0292522A (en) | Manufacture of nonporous tube bundle | |
| JPH0117846B2 (en) | ||
| JPH03262629A (en) | Method for deep-forming fluororesin |