preform


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preform

[prē′fȯrm]
(engineering)
A preshaped fibrous reinforcement.
A compact mass of premixed plastic material that has been prepared for convenient handling and control of uniformity during the mold loading process.
(engineering acoustics)
The small slab of record stock material that is loaded into a press to be formed into a disk recording. Also known as biscuit (deprecated usage).
References in periodicals archive ?
31 August 2017 - Las Vegas, US-based optical fiber technology company Ameritek VentureS (OTC: ATVK) has agreed to an asset purchase with the chairman and CEO of Ameritek to acquire intellectual property needed to manufacture new optical fibre preforms, the company said.
preform aperture ANSI LF f169 in an amount of 5 pieces .
JP Grosfilley SAS of Martignat, France, showed a three-station, rotary injection blow mold for bottles that molds preforms in the first station; blows them in the second; and ejects them freefalling in the third.
In contrast to gases, liquids possess an almost incompressible material behavior which results in a high controllability of the time dependent preform volume increase.
5-Step PF moulding process is based on the principle that it takes around three times longer to injection mould and cool a preform than it does to blow the bottle.
PET converter Esterform Packaging has introduced short neck 28mm 1881 PCO neck preforms for soft drinks and water in bottles from 250m1 to 2 litres.
5m to develop and install SampJe-PreWatcher technology from Intravis GmbH for the automatic inspection of the key quality parameters of preforms.
Because preform size has an impact on the ratio of fiber cost to processing cost, the relative costs to manufacture short-fiber preforms were estimated for small, medium and large preforms.
A variable speed cutter is located in the head of the machine, and the extrudate is cut at the die face so variations in die swell do not affect the volumetric accuracy of the preforms.
The bottles are produced in two steps--the first operation is the injection molding of the preform, second is blow molding the preform into the final shape.
Amcor PET Packaging, (formerly Schmalbach-Lubeca) uses intermediate bulk containers to handle and store preforms in their Gresford, Wrexham facility.
com/research/664662/global_and_china_o) has announced the addition of the "Global and China Optical Fiber Preform Industry Report, 2010-2011" report to their offering.