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GB419482A - Improvements in or relating to the production of play balls - Google Patents

Improvements in or relating to the production of play balls

Info

Publication number
GB419482A
GB419482A GB31910/33A GB3191033A GB419482A GB 419482 A GB419482 A GB 419482A GB 31910/33 A GB31910/33 A GB 31910/33A GB 3191033 A GB3191033 A GB 3191033A GB 419482 A GB419482 A GB 419482A
Authority
GB
United Kingdom
Prior art keywords
nucleus
rubber
former
latex
aperture
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
GB31910/33A
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.)
International Latex Processes Ltd
Original Assignee
International Latex Processes Ltd
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 International Latex Processes Ltd filed Critical International Latex Processes Ltd
Priority to GB31910/33A priority Critical patent/GB419482A/en
Priority to DEI50828D priority patent/DE628097C/en
Priority to FR780701D priority patent/FR780701A/en
Publication of GB419482A publication Critical patent/GB419482A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/04—Spherical articles, e.g. balls
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • 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
    • 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
    • B29C41/14—Dipping a core
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

419,482. Game balls. INTERNATIONAL LATEX PROCESSES, Ltd., 10, Lefebvre Street, St. Peter's Port, Guernsey, TWISS, D. F., and McCOWAN, W., Fort Dunlop, Birmingham. Nov. 16, 1933, No. 31910. [Class 132 (ii).] Game balls, for example tennis balls, are made by depositing a liquid composition on a preferably spherical former to form a relatively thin elastic nucleus. After removal from the former, the aperture in the nucleus is closed, a coating of rubber is applied and the whole is vulcanized in a spherical mould. Finally the usual felt cover is added. Aqueous emulsions or dispersions of rubber are preferably used for both the nucleus and subsequent coating, and may consist of rubber, guttapercha, balata or similar vegetable resins. The nucleus may be removed from the former by stretching or the former may be of material which can readily be rendered plastic or liquid. The aperture in the nucleus may be sealed by tying, or by securing a cap thereover by rubber solution or latex, and the subsequent coating may be applied (1) by cupping, the operation being expedited by the use of a coagulant or otherwise (2) by winding with unvulcanized rubber tape produced by calendering or spreading. Inflating agents may be introduced into the nucleus before it is sealed, or subsequently at any stage by the hollow needle method in which case a rubber plug is secured to the inside of the nucleus. Preferably, agents are also introduced into the nucleus before closing for increasing the permeability of the rubber ball, and are spread to form a uniform lining before or after sealing of the nucleus. In one example the nucleus is formed by dipping a former into a compounded latex dispersion comprising rubber 92 parts, sulphur 2, zinc oxide 1, mineral oil 4 and accelerator 1 part, and then vulcanizing the dried deposit. The inside of the nucleus is covered with impermeable dope, for example, as described in Specification 416,679, [Group V], inflating agents are introduced, and a cap is secured over the aperture by a rubber or latex cement which vulcanizes at ordinary temperatures. The outside of the sealed nucleus is then coated with dope and allowed to stand, after which the winding or cupping operation is effected. Specifications 219,635 and 290,313, [both in Class 70], also are referred to.
GB31910/33A 1933-11-16 1933-11-16 Improvements in or relating to the production of play balls Expired GB419482A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB31910/33A GB419482A (en) 1933-11-16 1933-11-16 Improvements in or relating to the production of play balls
DEI50828D DE628097C (en) 1933-11-16 1934-10-25 Process for the production of seamless rubber toys
FR780701D FR780701A (en) 1933-11-16 1934-11-02 Improvements in the manufacture of game balls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31910/33A GB419482A (en) 1933-11-16 1933-11-16 Improvements in or relating to the production of play balls

Publications (1)

Publication Number Publication Date
GB419482A true GB419482A (en) 1934-11-13

Family

ID=10330205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31910/33A Expired GB419482A (en) 1933-11-16 1933-11-16 Improvements in or relating to the production of play balls

Country Status (3)

Country Link
DE (1) DE628097C (en)
FR (1) FR780701A (en)
GB (1) GB419482A (en)

Also Published As

Publication number Publication date
FR780701A (en) 1935-05-02
DE628097C (en) 1936-03-28

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