IT1201173B - Silent motion transmission parts prodn. - Google Patents

Silent motion transmission parts prodn.

Info

Publication number
IT1201173B
IT1201173B IT19117/87A IT1911787A IT1201173B IT 1201173 B IT1201173 B IT 1201173B IT 19117/87 A IT19117/87 A IT 19117/87A IT 1911787 A IT1911787 A IT 1911787A IT 1201173 B IT1201173 B IT 1201173B
Authority
IT
Italy
Prior art keywords
density polyethylene
blends
temp
layer
low density
Prior art date
Application number
IT19117/87A
Other languages
Italian (it)
Other versions
IT8719117A0 (en
Inventor
Benedetto Calcagno
Edoardo Robecchi
Original Assignee
Pirelli
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 Pirelli filed Critical Pirelli
Priority to IT19117/87A priority Critical patent/IT1201173B/en
Publication of IT8719117A0 publication Critical patent/IT8719117A0/en
Application granted granted Critical
Publication of IT1201173B publication Critical patent/IT1201173B/en

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Landscapes

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Abstract

Polyolefin film with a mat finish comprises at least two coextruded layers; an upper mat finish layer comprising high density polyethylene, polypropylene or blends thereof and a second layer comprising low density polyethylene, linear low density polyethylene or blends thereof. The film is prepd. by coextrusion of an external layer comprising high density polyethylene, polypropylene or blends thereof and an internal layer comprising low density polyethylene, linear low density polyethylene or blends thereof. The extrusion process comprises passage of the coextruded layers from feed zone to an extruder die through temp. control zones where the external layer passing through the temp. control zones from the feed zone is heated more rapidly to a higher temp. than the corresp. internal layer in the corresp. temp. control zone
IT19117/87A 1987-01-21 1987-01-21 Silent motion transmission parts prodn. IT1201173B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT19117/87A IT1201173B (en) 1987-01-21 1987-01-21 Silent motion transmission parts prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19117/87A IT1201173B (en) 1987-01-21 1987-01-21 Silent motion transmission parts prodn.

Publications (2)

Publication Number Publication Date
IT8719117A0 IT8719117A0 (en) 1987-01-21
IT1201173B true IT1201173B (en) 1989-01-27

Family

ID=11154830

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19117/87A IT1201173B (en) 1987-01-21 1987-01-21 Silent motion transmission parts prodn.

Country Status (1)

Country Link
IT (1) IT1201173B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015225753A1 (en) 2015-12-17 2017-06-22 Contitech Antriebssysteme Gmbh toothed belt

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015225753A1 (en) 2015-12-17 2017-06-22 Contitech Antriebssysteme Gmbh toothed belt
DE102015225753B4 (en) 2015-12-17 2024-01-04 Contitech Antriebssysteme Gmbh timing belt

Also Published As

Publication number Publication date
IT8719117A0 (en) 1987-01-21

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Legal Events

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

Effective date: 19990128