GB675569A - Constant viscosity method of lining container closures - Google Patents

Constant viscosity method of lining container closures

Info

Publication number
GB675569A
GB675569A GB15573/49A GB1557349A GB675569A GB 675569 A GB675569 A GB 675569A GB 15573/49 A GB15573/49 A GB 15573/49A GB 1557349 A GB1557349 A GB 1557349A GB 675569 A GB675569 A GB 675569A
Authority
GB
United Kingdom
Prior art keywords
compound
pump
valve
water
lining
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
GB15573/49A
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.)
Dewey and Almy Chemical Co
Original Assignee
Dewey and Almy Chemical Co
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 Dewey and Almy Chemical Co filed Critical Dewey and Almy Chemical Co
Publication of GB675569A publication Critical patent/GB675569A/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
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/78—Moulding material on one side only of the preformed part
    • B29C70/80—Moulding sealing material into closure members
    • 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
    • B29B13/022—Melting the material to be shaped
    • 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
    • B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
    • B29C31/04—Feeding of the material to be moulded, e.g. into a mould cavity
    • B29C31/042—Feeding of the material to be moulded, e.g. into a mould cavity using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/22—Component parts, details or accessories; Auxiliary operations
    • B29C39/24—Feeding the material into the mould
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C2037/90—Measuring, controlling or regulating
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Coating Apparatus (AREA)

Abstract

<PICT:0675569/III/1> A process for lining container closures with accurately maintained amounts of container sealing compound having a critical temperature-viscosity characteristic includes the steps of circulating a large amount of the compound through a conduit system, releasing a predetermined quantity of sensible heat in the compound, thus regulating the viscosity, discharging a minor fraction only of the circulating compound on to successive closures, and continuously maintaining the volume of the compound being circulated by entraining the make-up quantity of compound in the circulating stream. The sealing compound is solid or pasty when cold, shows a sudden drop in visocity within a critical temperature range (e.g. 100 DEG F-140 DEG F), and a rapid rise in viscosity as the temperature rises above the critical temperature. In the arrangement shown 10 is a gear type positive displacement pump driven by a variable ratio drive connected to an electric motor. The discharge from the pump passes through 11 to an equalizer coil 12 immersed in water tank 13, through conduit 14 to the lining assembly 15 comprising a nozzle 16 and air chamber 17, then through conduit 19 to be discharged at 20. The open end 20 is located close to the apex 21 of the conical bottom 22 of the compound supply tank 23. A grid 24, forming a support for the cold solid compound 29, is composed of crossed small diameter pipes which extend through the base 22 and communicate with the water in tank 13. Alternatively, the grid may be heated electrically. The water in tank 13 is maintained at a temperature close to the lining temperature by electric heating coils, and is circulated through pipes 27, 28 by pumps 26. In operation material 29 is added and, melted by the water, collects at 30. Byepass valve 31, upper byepass valve 32, conveniently a spring loaded relief valve, and flow control valve 33 are opened and pump 10 started. After a minute or two valve 31 is closed and the compound then passes through 11, 12, 14, 34, 32, 19, 22, but when the operating temperature is nearly reached valve 32 is closed so that the compound passes through 17, and after a few more minutes the lining machine is operated to supply the compound to closures 25. The pump 10 supplies a substantial part of the heat required to prepare the compound, while the water melts the compound and compensates for radiation losses. The heat supplied by the pump is dependent upon the speed of pumping which is controlled by the variable drive mechanisms and the back pressure on the system, which is adjusted by valve 33, and with these conditions set the system is largely self regulating. The working data of two examples are given. It is preferred to heat the compound internally by means of a pump because the pump also builds up the pressure to move the material through the circuit, but this heating may also be accomplished by passing the compound through a high frequency electric field, or by means of mechanical or electric oscillators or a pulsing diaphragm.
GB15573/49A 1949-03-01 1949-06-10 Constant viscosity method of lining container closures Expired GB675569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US675569XA 1949-03-01 1949-03-01

Publications (1)

Publication Number Publication Date
GB675569A true GB675569A (en) 1952-07-16

Family

ID=22076800

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15573/49A Expired GB675569A (en) 1949-03-01 1949-06-10 Constant viscosity method of lining container closures

Country Status (3)

Country Link
FR (1) FR1000386A (en)
GB (1) GB675569A (en)
NL (1) NL74925C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160305A (en) * 1984-05-15 1985-12-18 Anthony Bush Improvements relating to heat generating apparatus
EP0347269A1 (en) * 1988-06-17 1989-12-20 Saint-Gobain Vitrage International Manufacture of a strand of organic material serving as a joint and distance keeper in multiple glazing
BE1005613A3 (en) * 1992-03-09 1993-11-23 Philippe Arendt Plastisol treatment method and device
WO2005123268A2 (en) * 2004-06-15 2005-12-29 National Starch And Chemical Investment Holding Corporation System for dispensing viscous liquid

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160305A (en) * 1984-05-15 1985-12-18 Anthony Bush Improvements relating to heat generating apparatus
EP0347269A1 (en) * 1988-06-17 1989-12-20 Saint-Gobain Vitrage International Manufacture of a strand of organic material serving as a joint and distance keeper in multiple glazing
FR2632891A1 (en) * 1988-06-17 1989-12-22 Saint Gobain Vitrage IMPROVEMENT IN THE MANUFACTURE OF A CORD OF ORGANIC MATERIAL FOR SERVING JOINT AND INTERCALAR IN MULTIPLE GLAZING
US4957572A (en) * 1988-06-17 1990-09-18 Saint-Gobain Vitrage Method and apparatus for the production of a bead of organic material intended to serve as a seal and insert in a multiple glazing
BE1005613A3 (en) * 1992-03-09 1993-11-23 Philippe Arendt Plastisol treatment method and device
WO2005123268A2 (en) * 2004-06-15 2005-12-29 National Starch And Chemical Investment Holding Corporation System for dispensing viscous liquid
WO2005123268A3 (en) * 2004-06-15 2006-04-13 Rporation Nat Starch And Chemi System for dispensing viscous liquid

Also Published As

Publication number Publication date
NL74925C (en)
FR1000386A (en) 1952-02-11

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