Most recent Injection Moulding Images News

Most recent Injection Moulding Images News

Injection-moulded polystyrene ruler
injection moulding images
Image by CORE-Components
DoITPoMS, University of Cambridge

The colours in the image are the outcome of birefringence and relate to the residual strain in the polystyrene. The pattern of strain is indicative of the flow of material for the duration of the injection procedure and it highlights the injection point (identified as a ‘gate’) at the finish of the ruler the molecular alignment is greatest near this point. Towards the edges of the ruler and along its length, the material becomes much more relaxed and as the molecular alignment falls, the retardation of light is much less. If heated above the glass transition temperature of polystyrene (about 100 deg C), the material will tend to unwind, particularly along the centreline, near the gate. This will outcome in a wrinkled kind.

Polystyrene (PS)

Not specified


Polystyrene was injected into a mould by way of an ‘edge gate’ at the finish of the ruler

Polystyrene is hard and affordable and its use is extremely widespread. CD situations and clear plastic cups are frequent examples. Domestic appliance casings are also typically made from PS

Sample preparation

Cross-polarised light microscopy

J A Curran

Division of Components Science and Metallurgy, University of Cambridge

View micrograph in DoITPoMS web site

Most recent China Mould Manufacturer News

Most recent China Mould Manufacturer News

Image from web page 559 of “Crockery & glass journal” (1875)
china mould manufacturer
Image by Net Archive Book Pictures
Identifier: crockeryglassjou78newy
Title: Crockery &amp glass journal
Year: 1875 (1870s)
Subjects: Pottery Glass Glassware
Publisher: New York : G. Whittemore &amp Co.
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Photos: All Photos From Book

Click right here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Ahead of Image:
uerin, luneville _ … , _. IMPERIAL PORCELAIN FROM WEDGWOOD &amp CO., English Dinnerware . tunstall Vitrified and Vitreous Stanley hotelware from globe potteryHotel Ware …. co., ltd., cobridge IM and Rnrkinnham NEW SHAPES AND DECORS IN JET, ONYX, SA- jet ana not/Mngrieirn . mian, Rockingham, spa., etc, from john sad-Tea Pots ler, burslem, Staffordshire souvenir plates, reproductions of build-Souvenir and …. ings, monuments, and so forth., marketing novel- AHvorticinn Qn^^ial + iAC ^lES OF ALL Kinds IN EARTHENWARE, FROM AQveriising opeciaixies factories we control English Bone China . foley china prom e. brain &amp co., fbnton. , _ PULL LINE OF SHADES, CHIMNEYS, GLOBES, And so forth., Lamp (j I ass ware . . constantly in stock or for import Sole Agents for United States and Canada FCBi,VI.N.Y. 37 Warren Street, New York F^VL~N.Y. l82 cMaking Dinner Ware GETS Focus, creating Good Dinner WareHOLDS Consideration, Keeping it up is Excellent Company ISNT THIS Correct? Create for illustrations, samples and rates*

Text Appearing After Image:
COUNTESS, one hundred=piece.. No. 4538. K R Wyttie China Co*, Decorated Dinner Ware, Art Waresand Specialties, HUNTINGTON, W. VA, PRODUCERS OF PORCELAINE FOR Particular Individuals. i83 Co-Operative Flint Glass Business, BEAVER FALLS, PENNSYLVANIA. Companies of Fish Globes, Fish Tanks, Aquariums, Display Jars, Cake and Cheese Covers, Candy Jars, Seed Cups, Bird Baths, Paper Weights, Hyacinth Glasses, Tableware, etc. 184 McrsoD Glass Company Producers Illuminating Glassware, (Scientific, Architectural and Staple Styles), Colonial Tableware, (The Renowned Chippendale Krys^Tol), Specialties in Glass From Private Moulds. Modern Equipment IN ALLDEPARTMENTS. C. M. BLUMENAUER, H. A. SCHNELBACH, President. Secretary. FOLLANSBEE, WEST VIRGINIA. i85 A NEW LINE. New China—New Shapes—New Decorations. NEW IROQUOIS/ IROQUOIS Trade ^^^^JT!^^ Mark SYRACUSE, N.Y. VITRIFIED HOTEL CHINA. A line of character and distinction, manufactured exclusively for hotel and related makes use of. Iroquois China Co. SYRACUSE. N

Note About Pictures
Please note that these pictures are extracted from scanned page images that may have been digitally enhanced for readability – coloration and look of these illustrations may not completely resemble the original function.

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