Polyethylene Sheets Thickness Testers ASTM D1777

Product Description

Features

Professional

With innovative research and development, Labthink C640 Thickness Tester uses high precision displacement sensor, supported by scientific structure and professional control technology, which makes C640 greatly improved in stability, repeatabilityNote1 and accuracy.

• The instrument conforms to standards for mechanical contact method. The pressure foot can be lifted and lowered automatically, which can minimize the errors caused by human operation.
• Contacting time and test speed can be set as required. Customization is available for multiple contact areas and pressures, which can meet the requirements for various test conditions.
• Manual and automatic test modes can be selected by the users
• Calibration of multiple points can improve the linearity of the whole test range, which ensures the accuracy of measured results.
• Standard gauge block is available for fast calibration

High Efficiency

The instrument is featured with high efficiency and automatic design of structure, which minimize the human operation in measuring process. Intelligent controlling and data processing functions make it easy and reliable for test operation and data processing.

• Parameter program function enables the user to save all test parameters in a file so that those parameters can be applied directly for the same tests next time, which can help the user save time and minimize the error when inputting parameters manually.
• Test results include maximum value, minimum value, average value and standard variation, which can be displayed to the user directly.
• Result comparison function can help the user in evaluation of results.
• Auto sampling function (optional), feeding space, feeding speed, measure points can be set as required, which ensures the accuracy of multiple successive points measurement.

Intelligent

The instrument is embedded with Labthinks latest operating software, which is featured with user-friendly interface, intelligent data processing, strict user management and secure data storage. It also supports Labthink exclusive DataShieldTM (Optional) which provides the users with safe and reliable management of test data and test reports.

• Test data can be displayed in various forms including curves and data list
• Test data will be saved and encrypted in a unique way so that all the test information will be saved securely and reliably and protected from being tampered
• Various forms of test data can be searched, exported and printed out

Note: The described features should be in line with Table 1: Test Parameters.
Note1: The Repeatability refers to the repeatability within the test range.

Test Principle

The pre-conditioned specimen is placed on a flat test plane, the pressure foot which is paralleled to the test plane will drop down on the upper surface of the specimen with certain pressure applied on. The displacement sensor with the pressure foot will detect the space between the upper and lower surface of the specimen, which is the thickness of the specimen.

Test Standards

ISO 4593, ISO 534, ASTM D6988, ASTM F2251, GB/T 6672, GB/T 451.3, TAPPI T411, BS 2782-6, DIN 53370, ISO 3034, ISO 12625-3, ISO 5084, ASTM D374, ASTM D1777, ASTM D3652, GB/T 6547, GB/T 24218.2, FEFCO No 3, EN 1942, JIS K6250, JIS K6783, JIS Z1702

Note: The described test standards should be in line with Table 1: Test Parameters.

Applications

Basic Applications
Films and Sheeting Thickness measurement of various plastic films, sheeting, and diaphragms, etc.
Paper Thickness measurement of various paper, paper board and composite paper board, etc.
Extended Applications
Metal Pieces & Silicon Wafers Thickness measurement of silicon wafers, foils and various metal pieces, etc.
Corrugated Paperboard Thickness measurement of corrugated paperboard
Textiles Thickness measurement of textiles including woven fabrics, knitted fabrics, coated fabrics
Non-woven Fabrics Thickness measurement of non-woven fabrics e.g. baby diapers, sanitary napkins and medical masks, etc.
Other Materials Thickness measurement of solid insulation materials, adhesive tapes, earthwork synthetic materials and rubbers, etc.

Technical Specifications

Table 1: Test Parameters Note1

Parameter Model		C640M	C640H
Test Range (Standard)	mm	0 2	0 2
Resolution	m	0.1	0.1
RepeatabilityNote3	m	0.8	0.4
Test Range (Optional 1)	mm	0 6	0 6
Test Range (Optional 2)	mm	0 12	0 12
Feeding Space	mm	0 1000 (Adjustable)
Feeding Speed	mm/s	1.5 80 (Adjustable)
Additional Functions	Auto Sampler	Optional	Optional
	DataShieldTM Note2	Optional	Optional

Table 2: Technical Specifications

Measuring Method	Mechanical Contact Method
Test Pressure & Contact AreaNote3	Film: 17.51 KPa, 50 mm2
	Paper: 1001 KPa (Standard) / 501kPa (Optional), 200mm2
Instrument Dimension	370 mm (L) x 350 mm (W) x 410 mm (H)
Net Weight	26kg

Note1: The parameters in the table are measured by professional operator in Labthink laboratory according to relative requirements for laboratory standard conditions. For extended applications, customization is available to meet the special testing requirements.
Note2: DataShieldTM provides safe and reliable data application support. Multiple Labthink instruments can share one single DataShieldTM system which can be purchase as required.
Note3: Test pressure and contact area can be selected for paper or film. There are two options for test pressure for paper, i.e. 100kPa (standard) and 50kPa(optional). For other test pressure and contact area or curved pressure foot, customizations are available.

Superior Precision in Thickness Measurement

Engineered for consistency and accuracy, the tester utilizes advanced contact measurement principles with either mechanical or capacitive sensors. This ensures repeatable, high-precision results for polyethylene, LDPE, and HDPE materials, essential for maintaining product quality.


User-Friendly Operation and Versatile Control

The device supports both manual and digital control modes, accommodating different operator preferences. Testing is straightforward, with easy specimen placement and intuitive controls, making it ideal for laboratories and industrial environments.


Certified Safety and Environmental Protection

With CE certification and RoHS compliance, the thickness tester meets rigorous international safety and environmental standards. Its eco-friendly design, powder-coated finish, and ergonomic construction further support sustainable usage in quality assurance settings.