DE870346C - Belts made from polyvinyl alcohol or its derivatives - Google Patents

Belts made from polyvinyl alcohol or its derivatives

Info

Publication number
DE870346C
DE870346C DEP18354D DEP0018354D DE870346C DE 870346 C DE870346 C DE 870346C DE P18354 D DEP18354 D DE P18354D DE P0018354 D DEP0018354 D DE P0018354D DE 870346 C DE870346 C DE 870346C
Authority
DE
Germany
Prior art keywords
polyvinyl alcohol
derivatives
hydroxyl groups
belts made
water
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
Application number
DEP18354D
Other languages
German (de)
Inventor
Herbert Dr Berg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HELLMUTH HOLZ DR
Original Assignee
HELLMUTH HOLZ DR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HELLMUTH HOLZ DR filed Critical HELLMUTH HOLZ DR
Priority to DEP18354D priority Critical patent/DE870346C/en
Application granted granted Critical
Publication of DE870346C publication Critical patent/DE870346C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/14—Driving-belts made of plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
  • Belt Conveyors (AREA)

Description

Treibriemen aus Polyvinylalkohol oder seinen Derivaten Zuslatz zum Patent 847 234 Es wurde gefunden, daß als Werkstoffe für Treibriemen, Seile, Transportbänder u. dgl., die gemäß Patent 847 234 aus Polyvinvlaalkoholen oder seinen wasserlöslichen oder in Wasser quellbaren Derivaten oder entsprechenden Gemischen bestehen oder die eine Oherflächenschicht bzw. eine Imprägnierung aus einem solchen Werkstoff haben, jene an sich bekannten Polyvinylalkohole am besten geeignet sind, die nur 65 bis 950/o freie llydroxylgruppen enthalten, wobei die übrigen Hydroxylgruppen zu etwa 5 bis 35 O/o verestert, insbesondere acetyliert und/oder acetalisiert bzw. veräthert sind.Belt made of polyvinyl alcohol or its derivatives additive to Patent 847,234 It has been found that as materials for drive belts, ropes, conveyor belts and the like., According to Patent 847,234 from Polyvinvlaalkoholen or its water-soluble or in water-swellable derivatives or corresponding mixtures exist or one surface layer or an impregnation made of such a material have, those per se known polyvinyl alcohols are best suited, the only 65 to 950 / o free hydroxyl groups, with the remaining hydroxyl groups esterified to about 5 to 35 O / o, in particular acetylated and / or acetalized or are etherified.

I)al>ei bewähren sich auch solcheTreibriemen, Seile, Transportbänder u. dgl.. die nicht ganz aus den genannten Polyvinylalkoholen aufgebaut sind, sondern diese lediglich als Hüllstoffe für Zugeinlagen aus Textilien, Metallgeweben u. dgl. enthalten. In allen Fällen können Füll- und Farbstoffe zugesetzt werden. I) Such drive belts, ropes, and conveyor belts also prove their worth and the like .. which are not entirely built up from the polyvinyl alcohols mentioned, but rather these only as wrapping materials for cable inserts made of textiles, metal fabrics and the like. contain. In all cases, fillers and dyes can be added.

Derartige Treibriemen, Seile, Transportbänder u. dgl., nach an sich bekannten Verfahren z. B. durch Gießen, Spritzen, Pressen usw. hergestellt, zeichnen sich vor solchen aus reinem Polyvinylalkohol durch wesentlich höhere Widerstandsfähigkeit gegenüber dauernder Biegungsbeanspruchung aus. Insbesondere sind schnell laufende Riemen, die über Scheiben mit kleinem Durchmesser geführt werden, der Gefahr des Rissigwerdens an der Oberfläche ausgesetzt. Es zeigte sich nun, daß überraschenderweise Riemen z. B. aus partiell verestertem Polyvinylalkohol mit noch 5 bis 350/aAcetatgruppen diese Erscheinung des Rissigwerdens selbst bei größter und monatelanger Beanspruchung nicht zeigen. Von besonderer Bedeutung ist weiter die Tatsache, daß oberflächlich verletzte, beispielsweise an den Kanten eingerissene Riemen trotz der Verletzung nicht weiterreißen, so daß derartige Riemen, insbesondere bei Umkehrtrieben, also bei größter Beanspruchung auf Kantenfestigkeit, sich vorzüglich bewähren. Such drive belts, ropes, conveyor belts and the like known method z. B. made by pouring, spraying, pressing, etc., draw against those made of pure polyvinyl alcohol due to their significantly higher resistance against permanent bending stress. In particular, they are fast moving Straps that go over pulleys be guided with a small diameter, exposed to the risk of cracking on the surface. It now turned out that Surprisingly, belt z. B. from partially esterified polyvinyl alcohol with still 5 to 350 / aacetate groups this appearance of cracking even with the greatest and months of exposure do not show. Of particular importance is further the fact that superficially injured, for example torn at the edges Straps do not tear further despite the injury, so that such straps, in particular with reverse drives, i.e. with the greatest stress on edge strength, excellent prove.

Riemen aus solchen partiellen Polyvinylalkoholen weisen ebenfalls den dem Polyvinylalkohol eigenen Vorteil auf, sich nicht elektrisch aufzuladen.Belts made from such partial polyvinyl alcohols also exhibit polyvinyl alcohol has the advantage of not being electrically charged.

Die gleichen vorteilhaften Eigenschaften treten bei der Herstellung von Bändern, insbesondere Transporthändern, Seilen, insbesondere Treibseilen, Förderseilen, Geflechten, ferner Röhren und anderen derartigen Gebilden aus Polyvinylalkohol auf. Die Vielfältigkeit der zur Verfügung stehenden Produkte mit ihren verschiedenen physikalischen Eigenschaften erlauben, sich jeweils besonderen Anforderungen anzupassen. Zur Herabsetzung der Feuchtigkeitsempfindlichkeit wird man beispielsweise Polyvinylalkohol mit Acetalresten vorziehen, während partiell veresterte Polyvinylalkohole eine gewisse Thermoplatizität aufweisen. The same beneficial properties occur during manufacture of belts, especially transporters, ropes, especially driving ropes, conveyor ropes, Braids, tubes and other such structures made of polyvinyl alcohol. The diversity of the available products with their different physical properties allow us to adapt to special requirements. Polyvinyl alcohol, for example, is used to reduce the sensitivity to moisture prefer with acetal residues, while partially esterified polyvinyl alcohols a certain Have thermo-plasticity.

Claims (1)

PATENTANSPRUCH: Ganz oder teilweise aus Polyvinylalkohol oder seinen wasserlöslichen oder in Wasser quellbaren Derivaten oder entsprechenden Mischungen bestehende oder mit einer Oberflächenschicht oder Imprägnierung dieser Art versehene Treibriemen nach Patent 847 234, gekennzeichnet durch die Verwendung von an sich bekannten Polyvinylalkoholen, die nur 65 bis 95 0/o freie Hydroxylgruppen enthalten, wobei die übrigen Hydroxylgruppen zu etwa 5 bis 35 ovo verestert, insbesondere acetyliert und/oder acetalisiert bzw. veräthert sind, als Werkstoffe oder als Hüllstoffe für Zugeinlagen. PATENT CLAIM: Made entirely or in part of polyvinyl alcohol or its water-soluble or water-swellable derivatives or corresponding mixtures existing or provided with a surface layer or impregnation of this type Drive belt according to patent 847 234, characterized by the use of per se known polyvinyl alcohols which contain only 65 to 95% free hydroxyl groups, the remaining hydroxyl groups being esterified to about 5 to 35 ovo, in particular acetylated and / or are acetalized or etherified, as materials or as coating materials for Train inserts.
DEP18354D 1937-09-03 1937-09-03 Belts made from polyvinyl alcohol or its derivatives Expired DE870346C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP18354D DE870346C (en) 1937-09-03 1937-09-03 Belts made from polyvinyl alcohol or its derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP18354D DE870346C (en) 1937-09-03 1937-09-03 Belts made from polyvinyl alcohol or its derivatives

Publications (1)

Publication Number Publication Date
DE870346C true DE870346C (en) 1953-03-12

Family

ID=7366974

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP18354D Expired DE870346C (en) 1937-09-03 1937-09-03 Belts made from polyvinyl alcohol or its derivatives

Country Status (1)

Country Link
DE (1) DE870346C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1044388B (en) * 1953-11-27 1958-11-20 Continental Gummi Werke Ag Process for the production of belts from meltable elastic plastics
DE1086880B (en) * 1957-04-06 1960-08-11 Wilhelm Herm Mueller & Co K G Process for the production of endless flat or toothed belts from meltable plastic with tension inserts
DE1268362B (en) * 1956-01-18 1968-05-16 Armour Res Foundation Of Jllin Plastics reinforced with metal threads

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1044388B (en) * 1953-11-27 1958-11-20 Continental Gummi Werke Ag Process for the production of belts from meltable elastic plastics
DE1268362B (en) * 1956-01-18 1968-05-16 Armour Res Foundation Of Jllin Plastics reinforced with metal threads
DE1086880B (en) * 1957-04-06 1960-08-11 Wilhelm Herm Mueller & Co K G Process for the production of endless flat or toothed belts from meltable plastic with tension inserts

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