GB1284923A - Process for the production of polyamide castings - Google Patents

Process for the production of polyamide castings

Info

Publication number
GB1284923A
GB1284923A GB44456/69A GB4445669A GB1284923A GB 1284923 A GB1284923 A GB 1284923A GB 44456/69 A GB44456/69 A GB 44456/69A GB 4445669 A GB4445669 A GB 4445669A GB 1284923 A GB1284923 A GB 1284923A
Authority
GB
United Kingdom
Prior art keywords
jacket
shaft
lactam
polyamide
caprolactam
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
GB44456/69A
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.)
VYZK USTAV SYNTHETICKYCH PRYSK
Original Assignee
VYZK USTAV SYNTHETICKYCH PRYSK
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 VYZK USTAV SYNTHETICKYCH PRYSK filed Critical VYZK USTAV SYNTHETICKYCH PRYSK
Publication of GB1284923A publication Critical patent/GB1284923A/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
    • B29C70/72—Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • 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
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B29C39/006—Monomers or prepolymers
    • 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
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting 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
    • 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
    • B29C39/40—Compensating volume change, e.g. retraction
    • 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
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • 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
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • 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
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0067—Melt
    • 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
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49874—Prestressing rod, filament or strand

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Polyamides (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

1284923 Polyamide mouldings containing cavities or metal shafts VYZKUMNY USTAV SYNTHETICKYCH PRYSKYRIC A LAKU 9 Sept 1969 [11 Sept 1968 (2) 12 Aug 1969] 44456/69 Heading B5A Polyamide castings containing cavities or fitted with a metal shaft are made by casting a lactam melt comprising an alkaline catalyst, promoter and optionally pigments, fillers and other additives around a core or metal shaft provided with a deformable jacket of elastic macromolecular material in a preheated mould. The lactam is polymerized at a temperature below the melting point of the polyamide formed. The core and jacket may then be removed. For forming cavities in the moulding the jacket preferably comprises a hollow inflatable jacket of a thermostable macromolecular material such as silicone rubber. This may be formed by winding the elastomer around the shaft and sealing the ends of the jacket formed with cold curable silicone rubber. The jacket is inflated during polymerization by a gas at a pressure of 1-20 atm. and the gas pressure is maintained during polymerization and is released during or after cooling. When the shaft is to remain in the moulding, the jacket may be inflatable or of a foamed elastomer, and the gas pressure inflating the jacket is lowered during polymerization to allow the casting to shrink on to the shaft. The lactam used is preferably 6- caprolactam or its mixture with laurolactam containing 0À1-2 mole per cent of the sodium salt of 6-caprolactam as a catalyst and 0À05- 5 mole per cent of N-acetyl-6-caprolactam, hexamethylene-1,6-diisocyanate or triphenylmethane-4,4<SP>1</SP>,4<SP>11</SP>-triisocyanate as promoter. The mould is preferably preheated to 120-200‹ C. and the lactam melt to 80-180‹ C.
GB44456/69A 1968-09-11 1969-09-09 Process for the production of polyamide castings Expired GB1284923A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CS636668 1968-09-11
CS635968 1968-09-11
CS555969 1969-08-11

Publications (1)

Publication Number Publication Date
GB1284923A true GB1284923A (en) 1972-08-09

Family

ID=27179500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB44456/69A Expired GB1284923A (en) 1968-09-11 1969-09-09 Process for the production of polyamide castings

Country Status (8)

Country Link
US (1) US3658975A (en)
BE (1) BE738738A (en)
CH (1) CH520739A (en)
DE (1) DE1944570A1 (en)
FR (1) FR2017794A1 (en)
GB (1) GB1284923A (en)
NL (1) NL6913800A (en)
SE (1) SE358108B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633560A1 (en) * 1976-07-26 1978-02-09 Elteka Kunststoff METHOD FOR MANUFACTURING CAST BODIES BY THE ACTIVATED ANIONIC POLYMERIZATION OF LACTAMEN
IT1165453B (en) * 1983-07-04 1987-04-22 Consiglio Nazionale Ricerche PROCESS FOR THE PREPARATION OF THERMOPLASTIC BODIES SELF-EXTINGUISHING FORMATS BASED ON POLYCAPROLACTAM
GB8715835D0 (en) * 1987-07-06 1987-08-12 Balmoral Group Coating of syntactic articles
DE4434657A1 (en) * 1994-09-28 1996-04-04 Schwartz G Gmbh & Co Kg Part made by polymerisation of lactam(s) in mould
BR112013011727A2 (en) * 2010-11-12 2017-10-10 Basf Se process for the production of a composite component, and use of a composite component

Also Published As

Publication number Publication date
US3658975A (en) 1972-04-25
BE738738A (en) 1970-02-16
FR2017794A1 (en) 1970-05-22
NL6913800A (en) 1970-03-13
CH520739A (en) 1972-03-31
SE358108B (en) 1973-07-23
DE1944570A1 (en) 1970-03-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees