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Home > News > Machinery & Chemical

KRAIBURG TPE leverages contactless optical device to measure shrinkage values

Source:Adsale Plastics Network Date :2024-02-09 Editor :RC
Copyright: This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

KRAIBURG TPE introduces a contactless optical measuring device enables distance measurements required to determine shrinkage values in accordance with DIN EN ISO 294-4 in order to provide manufacturers with maximal precise data.


KRAIBURG contactless optical measure_480.jpg


KRAIBURG uses contactless optical measuring device to determine shrinkage values for established compounds.

 

KRAIBURG’s measurements “for determining the processing shrinkage and the post-shrinkage of thermoplastics” are based on test specimens 60 x 60 x 2 mm in size that are injection-molded in accordance with the DIN standard.


KRAIBURG contactless optical measure_test plate_480.jpg


Test plate in accordance with DIN EN ISO 294-4.

 

The device can determine shrinkage values of all established compounds in accordance with the DIN EN ISO 294-4 standard, irrespective of the Shore hardness of the tested materials.

 

During measurements, shrinkages are determined both along the direction of flow and transverse to the material.

 

Combined with other parameters, such as wall thickness and flow paths, these specifications enable mold makers and calculation engineers to make specific calculations for the most accurate dimensioning of their molds. This applies to the manufacture of new molds, but also to adjusting existing molds, such as for planned material changes.

 

In all cases, the cavity must be designed in such a way that the material shrinkage, that persists for up to 48 hours after processing, is taken into account in relation to the finished plastic part.

 

“The use of contactless measuring devices has proved to be advantageous, particularly for measuring the shrinkage of soft and very soft materials,” explained Grit Müller, Team Application Engineering.


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Measuring and testing equipment
Kraiburg TPE
 Walthmac Measurement & Control Technology Co.,Ltd.      

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