DE697919C - Process for deforming polyvinyl chloride - Google Patents
Process for deforming polyvinyl chlorideInfo
- Publication number
- DE697919C DE697919C DE1936I0056400 DEI0056400D DE697919C DE 697919 C DE697919 C DE 697919C DE 1936I0056400 DE1936I0056400 DE 1936I0056400 DE I0056400 D DEI0056400 D DE I0056400D DE 697919 C DE697919 C DE 697919C
- Authority
- DE
- Germany
- Prior art keywords
- polyvinyl chloride
- deforming
- rapid heating
- takes place
- mechanical strength
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/021—Heat treatment of powders
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Verfahren zum Verformen von Polyvinylchlorid Zusatz zum Patent 696 147 Das Hauptpatent 696 147 schützt ein Verfahren zum Verformen von Poylvinylchlorid unter Druck und Hitze, welches dadurch gekennzeichnet ist, daß die Verformung unter schnellem Erhitzen auf etwa 150° C erfolgt.Method of shaping polyvinyl chloride Addition to patent 696 147 The main patent 696 147 protects a method for deforming polyvinyl chloride under pressure and heat, which is characterized in that the deformation under rapid heating to about 150 ° C takes place.
Wie nun weiter gefunden wurde, empfiehlt es sich, bei der Herstellung solcher Formkölper, welce eine größere Masse besitzen, wie beispielsweise Rohre, Rohrverbindungsstücke, Stäbe, Gefäße. Teller, Tassen, dicke Platten u. a., eine Vorbehandlung des zu verformenden Polyvinylchlorids vorzunehmen, welche darin besteht, daß man es zunächst auf dem Kalander, in einer beheizten Schnecke oder Knetmaschine auf Temperaturen unterhalb der Umwandlungstemperatur, d. II. bis auf etwa 1300 erhitzt und es auf diesc Weise plastisch, macht, wobei auch Lufteinschlüsse entfernt werden. Die so erhaltene, noch heiße und plastische Masse wird dann durch Verpressen unter schnellem Erhitzen auf etwa 150 in die gewünschte Form gebracht. Nach dem Erkalten erhält man spannungsfreie, nicht verfärbte Formkörper von hoher mechanischer Festigkeit, welche in der Wärme oder Kälte leicht weiterverarbeitet werden können. As has now been further found, it is recommended in the manufacture such molded bodies, welce have a larger mass, such as pipes, Pipe connectors, rods, vessels. Plates, cups, thick plates, etc., one To pre-treat the polyvinyl chloride to be molded, which consists of that you first put it on the calender, in a heated screw or kneading machine to temperatures below the transition temperature, d. II. Heated up to about 1300 and in this way makes it plastic, whereby air inclusions are also removed. The still hot and plastic mass obtained in this way is then pressed under rapid heating to about 150 in the desired shape. After cooling down one obtains tension-free, non-discolored moldings of high mechanical strength, which can easily be further processed in the warm or cold.
Durch Einarbeiten von löslichen oder unlöslichen Farbstoffen läßt sich jede gewünschte Färbung der Preßkörper erzielen.By incorporating soluble or insoluble dyes achieve any desired color of the pressed body.
Beispiel 5 kg Polyvinylchlorid werden auf einem Mischwalzwerk bei I300 zu dünnen Schichten ausgewalzt, von der Walze abgezogen und dann (in plastischer Form) zu einer sogenannten Pappe zusammengerollt. I)iese Puppe wird z. 13. in einer Röhrenpresse bei einem Druck von 80 kg/qcm zu Rohren verpreßt. Example 5 kg of polyvinyl chloride are used on a mixing roll mill I300 rolled out into thin layers, peeled off the roller and then (in plastic Form) rolled up into a so-called cardboard. I) this doll is z. 13th in one Tube press pressed into tubes at a pressure of 80 kg / sq. Cm.
Die Temperatur des Preßzylinders beträgt hierbei 130° C, die der Matrize 180° C. Das Äfaterial selbst nimmt hierbei eine Temperatur von 150 bis 160° C an. Die erhaltenen Rohre besitzen hohe mechanische Festigkeit gegen Schlag und Stoß. Sie lassen sich unter schwachem Erwärmen wie Glas biegen oder anderweitig verformen, ohne ihre mechanische Festigkeit zu verlieren. In der Kälte können sie beispielsweise mit Gewindebohrern, Schneideeisen, Fräsmaschinen wie Metallrohre bearbeitet werden.The temperature of the press cylinder is 130 ° C, that of the die 180 ° C. The material itself assumes a temperature of 150 to 160 ° C. The pipes obtained have high mechanical strength against impact and shock. They can be bent or otherwise deformed like glass when heated slightly, without losing their mechanical strength. In the cold, for example, you can machined with taps, dies, milling machines such as metal pipes.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936I0056400 DE697919C (en) | 1936-11-21 | 1936-11-21 | Process for deforming polyvinyl chloride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1936I0056400 DE697919C (en) | 1936-11-21 | 1936-11-21 | Process for deforming polyvinyl chloride |
Publications (1)
Publication Number | Publication Date |
---|---|
DE697919C true DE697919C (en) | 1940-10-26 |
Family
ID=7194347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1936I0056400 Expired DE697919C (en) | 1936-11-21 | 1936-11-21 | Process for deforming polyvinyl chloride |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE697919C (en) |
-
1936
- 1936-11-21 DE DE1936I0056400 patent/DE697919C/en not_active Expired
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