DE1030556B - Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC. - Google Patents

Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC.

Info

Publication number
DE1030556B
DE1030556B DEE8726A DEE0008726A DE1030556B DE 1030556 B DE1030556 B DE 1030556B DE E8726 A DEE8726 A DE E8726A DE E0008726 A DEE0008726 A DE E0008726A DE 1030556 B DE1030556 B DE 1030556B
Authority
DE
Germany
Prior art keywords
hollow
pvc
balls
plastic
casting process
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
Application number
DEE8726A
Other languages
German (de)
Inventor
Franz Effenberger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEE8726A priority Critical patent/DE1030556B/en
Publication of DE1030556B publication Critical patent/DE1030556B/en
Pending legal-status Critical Current

Links

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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/18—Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Description

Verfahren, sogenanntes Sturzgießverfahren, zur Herstellung von Bällen aus einem thermoplastischen Kunststoff, vorzugsweise aus PVC. Process, so-called fall casting process, for the production of balls made of a thermoplastic material, preferably made of PVC.

Bälle werden im allgemeinen aus Gummi hergestellt. Es sind aber aueh solche aus Kunststoff bekannt, beispielsweise für Tischtennis, die aber nur eine geringe Elastizität aufweisen. Balls are generally made from rubber. But there are those made of plastic known, for example for table tennis, but only one have low elasticity.

Gemäß der Erfindung wird ein Verfahren, sogenanntes Sturzgießverfahren, zur Herstellung von Bällen aus einem thermoplastischen Kunststoff, vorzugsweise aus PVC, unter Verwendung zweier zusammenge!hörendler halbkugelförmiger Hohlformen in Vorschlag gebracht, welches darin besteht, daß die Hohlformen bis an den Rand mit dem Kunststoff gefüllt werden, woraufhin, nachdem die übrige Masse in an sich bekannter Weise ausgegossen, nach dem Vorgelieren die bei den halbkugelförmigen Hohlformen mit den zusammengehörenden Stirnflächen aufeinandergepreßt und fertiggeliert werden. According to the invention, a method, so-called fall casting method, for the production of balls from a thermoplastic material, preferably Made of PVC, using two hemispherical hollow shapes that belong together brought in proposal, which consists in that the hollow molds to the edge be filled with the plastic, whereupon after the remaining mass in per se Poured out in a known way, after pre-gelling the hemispherical ones Hollow forms with the end faces that belong together are pressed together and fully gelled will.

Weiter wird erfindungsgemäß vorgeschlagen, daß die vorgel ie rten Ballschalen an ihren Verbindungsstellen vor dem Aufeinan derpres sen der Hohlform en mit I(unststoffmasse zusätzlich bestrichen werden. It is also proposed according to the invention that the vorgel ie rten Ball shells at their connection points before the Aufeinan derpres sen the hollow form en with I (plastic compound are additionally coated.

Nach einem weiteren E rfin dungsgedanken werden in Kunststoffolie ausgeschnittene buntfarbige Figuren in die Hohlform eingelegt, woraufhin die Kunststoflmasse eingefüllt wird. According to a further idea of the invention, plastic film cut out brightly colored figures inserted into the hollow form, whereupon the plastic mass is filled.

Schließlich wird nodh vorgeschlagen, daß vor dem Gießvorgang auf die Innenwandung der Hohl form ein in die Balihaut eindringender Farbstoff aufgebracht wird. Finally, it is suggested that prior to the casting process on the inner wall of the hollow form a dye that penetrates the Bali skin is applied will.

Die gemäß der Erfindung hergestellten Bälle zeichnen stich trotz des billigen Herstdlnngsverfahrens durch eine große Elastizität und Festigkeit aus und weisen eine verhältnismäßig lange Lebensdauer auf. The balls produced according to the invention stand out in spite of this of the cheap manufacturing process is characterized by great elasticity and strength and have a relatively long service life.

An Hand der Fig. 1 bis 3 wird das Verfahren gemäß der Erfindung erläutert. The method according to the invention is explained with reference to FIGS. 1 to 3.

PVC-Paste wird in kaltem Zustand in eine auf etwa 1200 C vorgewärmte Halbkugel-Aluminiumschale 1 bis an den Rand gefüllt. Nach etwa einer Minute wird der flüssige Teil der PVC-Masse ausgegossen. In dieser Zeit bat stich am Rand der Metallschlale eine Halbkugelschale 2 aus vorgeliertem Polyvenylchlorid gebildet. Die Randzonen 3 zweier so hergestellter Halbkugeln werden unter anderem mit Polyvenylchloridpaste bestrichen und hierauf fest aufeinandergepreßt. Dies kann z. B. durch Verschrauben u. dgl. gescih,en. Nach Festwerden der Verbindung wird der vorgelierte Ball einem Wärmeofen bzw. einem Olbad zugeführt. PVC paste is cold in a preheated to about 1200 C. Hemispherical aluminum bowl 1 filled to the brim. After about a minute it will the liquid part of the PVC mass poured out. At this time the asked stabbed on the edge of the Metal shell a hemispherical shell 2 formed from pre-gelled polyvinyl chloride. The edge zones 3 of two hemispheres produced in this way are filled with polyvinyl chloride paste, among other things coated and then pressed tightly together. This can e.g. B. by screwing and the like. After the connection has become solid, the pre-gelled ball becomes a Heating furnace or an oil bath supplied.

Die Außenfläche des herzustellenden Balles kann beliebige Erhöhungen bzw. Vertiefungen 4 erhalten, indem entsprechende Vertiefungen bzw. Erhöhungen in der Innenfläche der Kugelschale vorgesehen werden. The outer surface of the ball to be produced can have any desired elevations or wells 4 obtained by corresponding wells or elevations in the inner surface of the spherical shell.

Sollen Bälle hergestellt werden, bei denen die Luft beliebig aus- und eintreten kann, so trägt die Halbkugel 1 innen einen Dorn 5, der länger ist als die Stärke der zu bildenden Ballhaut. Nachdem die PVC-Paste wie oben beschrieben bis an den Rand gefüllt und wieder abgegossen worden ist, wird auf den Dorn 5 ein Nippel 6, gleichfalls aus PVC, aufgesetzt, der eine entsprechende Bohrung 7 und in dem nicht durchbohrten Teil einen Längsschlitz 8 aufweist. Should balls be produced in which the air is and can enter, the hemisphere 1 has a mandrel 5 on the inside, which is longer as the Thickness of the ball skin to be formed. After the PVC paste as described above until it has been filled to the edge and poured off again, a 5 is placed on the mandrel Nipple 6, also made of PVC, placed on the corresponding hole 7 and has a longitudinal slot 8 in the non-pierced part.

Nippel und Balllhaut werden an der Berührungsstelle mit Paste bestrichen, fest aufeinandergedrückt, wodurch sie sich zu einer Einheit verbinden.The nipple and ball skin are coated with paste at the point of contact, firmly pressed together, making them one unit.

Claims (4)

PATENTANSPRÜCHE: 1. Verfahren, sogenanntes Sturzgießverfahren, zur Herstellung von Bällen aus einem thermoplastischen Kunststoff, vorzugsweise aus PVC, unter Verwendung zweier zusammlengehörender halbkugelförmiger Hohlformen, dadurch gekennzeichnet, daß die Hohlformen bis an den Rand mit dem Kunststoff gefüllt werden, woraufhin, nachdem die übrige Masse in an sich bekannter Weise ausgegossen ist, nach dem Vorgelieren die beiden halbkugelförmigen Hohlformen mit den zusammengehörenden Stirnflächen aufe in an dergepreßt und fertiggeliert werden. PATENT CLAIMS: 1. Process, so-called fall casting process, for Manufacture of balls from a thermoplastic material, preferably from PVC, using two hemispherical hollow shapes that belong together, thereby characterized in that the hollow molds are filled to the edge with the plastic, whereupon, after the remaining mass has been poured out in a manner known per se, after pre-gelling the two hemispherical hollow shapes with the ones that belong together End faces are pressed onto one another and fully gelled. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die vorgelierten Ballschalen an ihren Verbindungsstellen vor dem Aufeinanderpressen der Hohlformen mit Kunststoffmasse zusätzlich bestrichen werden. 2. The method according to claim 1, characterized in that the pregelatinized Ball shells at their connection points before the hollow forms are pressed together be additionally coated with plastic compound. 3. Verf ahren nach Anspruch 1, dadurch gekennzeichnet, daß in Kunststoffolie ausgeschnittene buntfarhige Figuren in die Hohlformen eingelegt werden, woraufhin die Kunststoffmasse eingefüllt wird 3. Process according to claim 1, characterized in that in plastic film cut-out colored figures are inserted into the hollow molds, whereupon the plastic compound is filled 4. Verfahren nach Anspruch 1, dadurch gekenfnzeichnet, daß vor dem Gießvorgang auf die Innen- wandung der Hohlform ein in die Ballhaut ein dringender Farbstoff aufgebracht wird.4. The method according to claim 1, characterized in that that before the casting process on the inner wall of the hollow shape into the ball skin urgent dye is applied. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 248 538; USA.-Patentschriften Nr. 2 597 704, 2553 252; französische Patentschrift Nr. 907 111. Documents considered: German Patent No. 248 538; U.S. Patent Nos. 2,597,704, 2553,252; French patent specification no. 907 111.
DEE8726A 1954-03-17 1954-03-17 Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC. Pending DE1030556B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE8726A DE1030556B (en) 1954-03-17 1954-03-17 Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE8726A DE1030556B (en) 1954-03-17 1954-03-17 Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC.

Publications (1)

Publication Number Publication Date
DE1030556B true DE1030556B (en) 1958-05-22

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ID=7067465

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE8726A Pending DE1030556B (en) 1954-03-17 1954-03-17 Process, the so-called fall casting process, for the production of balls from a thermoplastic material, preferably from PVC.

Country Status (1)

Country Link
DE (1) DE1030556B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152812B (en) * 1959-06-09 1963-08-14 Horst Meyer Process for the production of hollow bodies
DE1228789B (en) * 1959-01-30 1966-11-17 Jean Bourgois Process for the production of hollow bodies or upholstery parts filled with elastic foam
DE3204052A1 (en) * 1982-02-06 1983-08-18 Eberhard Faber Gmbh, 8430 Neumarkt Process and apparatus for producing three-dimensional figures or models for play or handicraft purposes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE248538C (en) *
FR907111A (en) * 1943-06-10 1946-03-01 Process and device for the manufacture of hollow objects, possibly inflatable such as balloons, using plastics based on synthetic resins
US2553252A (en) * 1948-05-05 1951-05-15 Haas Milford Apparatus for manufacturing plastic toy balloons
US2597704A (en) * 1949-08-22 1952-05-20 Cosom Ind Inc Process of making hollow bodies from fusible plastic materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE248538C (en) *
FR907111A (en) * 1943-06-10 1946-03-01 Process and device for the manufacture of hollow objects, possibly inflatable such as balloons, using plastics based on synthetic resins
US2553252A (en) * 1948-05-05 1951-05-15 Haas Milford Apparatus for manufacturing plastic toy balloons
US2597704A (en) * 1949-08-22 1952-05-20 Cosom Ind Inc Process of making hollow bodies from fusible plastic materials

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228789B (en) * 1959-01-30 1966-11-17 Jean Bourgois Process for the production of hollow bodies or upholstery parts filled with elastic foam
DE1152812B (en) * 1959-06-09 1963-08-14 Horst Meyer Process for the production of hollow bodies
DE3204052A1 (en) * 1982-02-06 1983-08-18 Eberhard Faber Gmbh, 8430 Neumarkt Process and apparatus for producing three-dimensional figures or models for play or handicraft purposes

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