IT1200695B - Hydroxymethyl-glutaric acid prepn. - Google Patents

Hydroxymethyl-glutaric acid prepn.

Info

Publication number
IT1200695B
IT1200695B IT21758/85A IT2175885A IT1200695B IT 1200695 B IT1200695 B IT 1200695B IT 21758/85 A IT21758/85 A IT 21758/85A IT 2175885 A IT2175885 A IT 2175885A IT 1200695 B IT1200695 B IT 1200695B
Authority
IT
Italy
Prior art keywords
coils
barrel
housings
clamped
extruder barrel
Prior art date
Application number
IT21758/85A
Other languages
Italian (it)
Other versions
IT8521758A0 (en
Inventor
Luigi Turbanti
Mauro Staderini
Original Assignee
Guidotti & C Spa Labor
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 Guidotti & C Spa Labor filed Critical Guidotti & C Spa Labor
Priority to IT21758/85A priority Critical patent/IT1200695B/en
Publication of IT8521758A0 publication Critical patent/IT8521758A0/en
Application granted granted Critical
Publication of IT1200695B publication Critical patent/IT1200695B/en

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An induction heating appts. for plastics extruders employs induction coils with E-shaped cores. The coils are mounted in a 2-piece housing which is clamped on the extruder barrel by spring tension. The extruder barrel (1) is heated by induction coils (2,2a,3,3a) in which the coil is wound on the central arm (4,4a,5,5a) of an E-shaped laminated iron core. The coils are magnetically coupled to the barrel by an interlayer (6,6a,7,7a) which covers the core. Pairs of coils are mounted in a 2-piece housing (8,9) which is assembled and clamped on the barrel (1) periphery by means of threaded pins (13), carrying washers (15) and nuts (16,17). Disc spring stacks (14) are interposed between the washers (15) and housings (8,9), so that the housings and coils are urged into contact with the barrel by spring pressure. In another embodiment, the appts. may be adapted to a cylindrical extruder barrel.
IT21758/85A 1985-07-30 1985-07-30 Hydroxymethyl-glutaric acid prepn. IT1200695B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT21758/85A IT1200695B (en) 1985-07-30 1985-07-30 Hydroxymethyl-glutaric acid prepn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21758/85A IT1200695B (en) 1985-07-30 1985-07-30 Hydroxymethyl-glutaric acid prepn.

Publications (2)

Publication Number Publication Date
IT8521758A0 IT8521758A0 (en) 1985-07-30
IT1200695B true IT1200695B (en) 1989-01-27

Family

ID=11186447

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21758/85A IT1200695B (en) 1985-07-30 1985-07-30 Hydroxymethyl-glutaric acid prepn.

Country Status (1)

Country Link
IT (1) IT1200695B (en)

Also Published As

Publication number Publication date
IT8521758A0 (en) 1985-07-30

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950728