ロンビック List of Products and Services

We would like to introduce the "Compression Permanent Deformation Measurement" offered by Ronbic Co., Ltd. It is possible to place samples (rubber, elastomers) in an oven or constant temperature and humidity chamber while they are attached, allowing for compression permanent deformation measurements under temperature conditions suited to the usage environment. In addition to measuring compression permanent deformation, we can also observe morphological differences through morphological observation using TEM or SEM. 【Measurement Conditions】 ■ Applicable Standards: JIS K 6262 ■ Compression Ratios: 10%, 15%, 25% *Determined by IRHD ■ Test Specimens ・Large Test Specimen: Diameter 29.0±0.5mm, Thickness 12.5±0.5mm ・Small Test Specimen: Diameter 13.0±0.5mm, Thickness 6.3±0.5mm *For more details, please download the PDF or feel free to contact us.

The "Tear Test" is a test that measures the tear strength of plastic films and resin sheets. We also accommodate the punching of test specimens that conform to standards from film and sheet samples. Temperature changes are possible in the trouser tear method and the rectangular tear method conducted with a tensile testing machine. *Applicable temperature range: -60°C to 200°C 【Test Items】 ■ Trouser Tear Method ■ Elmendorf Tear Method ■ Rectangular Tear Method *For more details, please download the PDF or feel free to contact us.

The "puncture test" is a test that measures the puncture strength of plastic films and resin sheets. A pin is pressed into the sample, and the strength at the point of penetration is measured. Since it is conducted using a tensile testing device with a temperature-controlled chamber, temperature changes (-60°C to 200°C) are also possible. The tip shape and testing speed can be modified, so please feel free to consult us. 【Overview】 ■ Applicable test standard: JIS Z1707 ■ Tip shape: Diameter 1.0mm, tip radius R0.5mm (for JIS Z1707) ■ Testing speed: 50mm/min (for JIS Z1707) *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Compression Test" conducted at Ronbic Co., Ltd. This test applies compressive force to resin materials and measures various physical properties such as compressive strength and compressive modulus. We also have a temperature-controlled chamber, allowing tests to be conducted under desired temperature conditions. Additionally, we can perform compression tests on non-standard product shapes and measure compressive strain by attaching strain gauges. Test results can also be provided in electronic data format. 【Test Conditions】 ■ Test Temperature: -60℃ to 200℃ ■ Load Cell Capacity: 50N, 1kN, 20kN ■ Applicable Standards: JIS K7181 ISO604 *For more details, please download the PDF or feel free to contact us.

We offer "hardness testing" at our company. The items include "durometer hardness" applicable to soft materials such as rubber and soft plastics, "Rockwell hardness" applicable to many plastics, and "Vickers hardness" applicable to metals and plastics. We also have various measurement records for items such as erasers (e.g., PVC), cutting boards (e.g., PE), car dashboard materials (e.g., PP), plastic lenses for glasses, and plastics. 【Measurement Methods】 ■Eraser (e.g., PVC): Durometer ■Cutting Board (e.g., PE): Durometer ■Car Dashboard Material (e.g., PP): Rockwell ■Plastic Lenses for Glasses: Rockwell ■Plastics: Vickers *For more details, please refer to the related links or feel free to contact us.

Our company conducts physical property measurements and evaluations of the "Vicat softening temperature." The measurement principle involves applying a specified test load to a plastic specimen and heating a heat transfer medium at a constant rate, measuring the temperature of the heat transfer medium when a needle-shaped indenter penetrates 1mm into the surface of the specimen. Additionally, the specimen thickness ranges from 3 to 6.5mm, and the applicable temperature range is from 23°C to 250°C. Please feel free to contact us when you need our services. 【Measurement Overview】 ■ Applicable Standards: JIS K7206, ASTM D1525 ■ Specimen: Thickness 3-6.5mm (JIS, ASTM) ■ Applicable Temperature: 23°C to 250°C *Testing can be conducted starting from 23°C as per the standards. *For more details, please refer to the related links or feel free to contact us.

We offer "bending tests" in accordance with standards such as JIS K7171, ISO 178, and ASTM D790. The test specimen is bent at three points using a support and a loading nose, and is pushed down at a constant speed to measure the material's bending strength and bending modulus. We can accommodate various conditions such as specimen shape and test temperature. Please feel free to contact us when you need our services. 【Test Overview】 ■ Example of applicable standards: JIS K7171, ISO 178, ASTM D790, etc. ■ Typical test specimen: 80×10×4mm (JIS, ISO), 127×12.7×6.4mm (ASTM) ■ Applicable temperature range: -40℃ to 200℃ (with temperature-controlled testing machine) ■ Others: Accommodates various conditions such as specimen shape and test temperature *For more details, please refer to the related links or feel free to contact us.

We offer measurements of the "deflection temperature under load." A specified test load is applied to a plastic test specimen, and the heat transfer medium is heated at a constant rate until the specified deflection is reached, at which point the temperature of the heat transfer medium is measured. The applicable temperature range is from 23°C to 250°C, and testing can be conducted from 27°C as per the standards. 【Overview】 ■ Applicable Standards: JIS K7191-2, ISO 75-2, ASTM D648 ■ Test Specimen: 80×10×4mm (JIS, ISO), 127×12.7×6.4mm (ASTM) ■ Test Specimen Orientation: Flatwise, Edgewise ■ Applicable Temperature: 23°C to 250°C *Testing can be conducted from 27°C as per the standards. *For more details, please refer to the related links or feel free to contact us.

We offer "Tensile Testing of Plastics." We can perform tensile tests on resins that comply with various standards such as ISO, JIS, and ASTM. Our testing machines can measure over a wide temperature range and can also assess mechanical properties other than tensile strength. We also provide specimen preparation for various physical property tests (dumbbell specimens, sheets). Additionally, we conduct physical property tests related to films and packaging. 【Test Overview】 ■ Equipment: Precision Universal Testing Machine Autograph AG-Xplus (manufactured by Shimadzu Corporation) ■ Extensometer: Video-type non-contact extensometer (double camera model) ■ Test Speed: 0.0005 to 1000 mm/min ■ Test Temperature: -60 to 200℃ ■ Load Cell Capacity: 50N, 1kN, 20kN *For more details, please refer to the related links or feel free to contact us.

We would like to introduce the "Compression Permanent Deformation Measurement" offered by Ronbic Co., Ltd. It is possible to place samples (rubber, elastomers) in an oven or constant temperature and humidity chamber while they are attached, allowing for compression permanent deformation measurements under temperature conditions suited to the usage environment. In addition to measuring compression permanent deformation, we can also observe morphological differences through morphological observation using TEM and SEM. 【Measurement Conditions】 ■ Applicable Standards: JIS K 6262 ■ Compression Rates: 10%, 15%, 25% *Determined by IRHD ■ Test Specimens ・Large Test Specimen: Diameter 29.0±0.5mm, Thickness 12.5±0.5mm ・Small Test Specimen: Diameter 13.0±0.5mm, Thickness 6.3±0.5mm *For more details, please download the PDF or feel free to contact us.

The "Tear Test" is a test that measures the tear strength of plastic films and resin sheets. We also accommodate the punching of test specimens that conform to standards from film and sheet samples. In the trouser tear method and rectangular tear method conducted with a tensile testing machine, temperature changes are also possible. *Available temperature range: -60°C to 200°C 【Test Items】 ■ Trouser Tear Method ■ Elmendorf Tear Method ■ Rectangular Tear Method *For more details, please download the PDF or feel free to contact us.

The "puncture test" is a test that measures the puncture strength of plastic films and resin sheets. A pin is pressed into the sample, and the strength is measured when it penetrates. Since it is conducted using a tensile testing machine with a temperature-controlled chamber, temperature changes (-60°C to 200°C) are also possible. The tip shape and testing speed can be modified, so please feel free to consult us. 【Overview】 ■ Applicable test standard: JIS Z1707 ■ Tip shape: Diameter 1.0mm, tip radius R0.5mm (for JIS Z1707) ■ Testing speed: 50mm/min (for JIS Z1707) *For more details, please download the PDF or feel free to contact us.

We offer "Tensile Testing of Plastics." We can conduct tensile tests on resins that comply with various standards such as ISO, JIS, and ASTM. Our testing equipment allows for measurements across a wide temperature range and can also measure mechanical properties (physical properties) other than tensile strength. We also accept the preparation of test specimens for various physical property tests (dumbbell specimens, sheets). Additionally, we conduct physical property tests related to films and packaging. 【Test Overview】 ■ Equipment: Precision Universal Testing Machine Autograph AG-Xplus (manufactured by Shimadzu Corporation) ■ Extensometer: Video-type non-contact extensometer (double camera model) ■ Test Speed: 0.0005 to 1000 mm/min ■ Test Temperature: -60 to 200℃ ■ Load Cell Capacity: 50N, 1kN, 20kN *For more details, please refer to the related links or feel free to contact us.

We offer "tensile testing of plastics." We can conduct tensile tests on resins that comply with various standards such as ISO, JIS, and ASTM. Our testing machines can measure over a wide temperature range and can also assess mechanical properties other than tensile strength. We also provide specimen preparation for various physical property tests (dumbbell specimens, sheets). Additionally, we conduct physical property tests related to films and packaging. 【Test Overview】 ■ Equipment: Precision universal testing machine Autograph AG-Xplus (manufactured by Shimadzu Corporation) ■ Extensometer: Video-type non-contact extensometer (double camera model) ■ Test speed: 0.0005 to 1000 mm/min ■ Test temperature: -60 to 200℃ ■ Load cell capacity: 50N, 1kN, 20kN *For more details, please refer to the related links or feel free to contact us.

We offer "hardness testing" at our company. The items include "durometer hardness" applicable to soft materials like rubber and soft plastics, "Rockwell hardness" applicable to many plastics, and "Vickers hardness" applicable to metals and plastics. We also have various measurement records for items such as erasers (e.g., PVC), cutting boards (e.g., PE), car dashboard materials (e.g., PP), plastic lenses for glasses, and plastics. 【Measurement Methods】 ■Eraser (e.g., PVC): Durometer ■Cutting board (e.g., PE): Durometer ■Car dashboard material (e.g., PP): Rockwell ■Plastic lenses for glasses: Rockwell ■Plastics: Vickers *For more details, please refer to the related links or feel free to contact us.

Our company conducts ultraviolet and visible spectroscopic analysis of plastic materials. The optical properties of resin (plastic) materials are important indicators for evaluating product transparency, aesthetics, and applicability to optical uses. Among these, "total light transmittance" is a representative measurement item for quantitatively assessing the degree of visible light transmission. By measuring total light transmittance using a spectrophotometer (UV-Vis spectrophotometer), we provide data to understand the optical performance of materials. ■ Measurement of total light transmittance using a spectrophotometer (UV-Vis spectrophotometer) ■ Providing data to understand the optical performance of materials *For more details, please download the PDF or feel free to contact us.

We conduct density measurements of plastic materials. Density is an important evaluation criterion for examining the physical properties and compositional differences of resin materials, and it is also effective for assessing the uniformity of samples or test pieces. In addition to density measurements using the water displacement method, we also accommodate bulk density measurements for pellets and powders. 【Features】 ■ Supports density measurement using the water displacement method ■ Also accommodates bulk density measurements for pellets and powders *For more details, please download the PDF or feel free to contact us.

Our company conducts measurements of the volume resistivity and surface resistivity of plastic materials. Using a high resistivity meter and a low resistivity meter, we can measure in the range of 10^-2Ω to 10^18 orders. Additionally, for some measurement ranges, we can change the probes to accommodate small samples (approximately 10mm in diameter), large samples, and measurements of resistance in the thickness direction of materials. 【Measurement Conditions】 ■ Applicable Standards ・JIS K6911 ※Test environment: 23℃ 50% RH ・JIS K7194 ■ Measurement Range: 10^-2Ω to 10^18 orders ■ Sample Size: 100mm square x 1–2mm thick *For more details, please download the PDF or feel free to contact us.

Our company conducts measurements of the glossiness of plastic materials. Glossiness, referred to as mirror glossiness in JIS Z8741, measures the degree of gloss (light reflection) and expresses it in numerical values. The higher the gloss, the larger the resulting value. In addition to glossiness, we can also measure optical properties such as haze, hue, refractive index, and transmittance. 【Measurement Conditions】 ■Applicable Standards: JIS Z8741 ■Standard Test Piece Shape: 15mm x 45mm or larger 　*If the sample is small, a spacer can be created to accommodate it. ■Equipment: Gloss Meter VG7000 / Nippon Denshoku Kogyo *For more details, please download the PDF or feel free to contact us.

We conduct color measurement of plastic materials. The color of the material can be expressed numerically in terms of L (lightness), a, b (chroma), YI (yellowness), W (whiteness), and the color difference (Δ) compared to a reference, and it is also possible to derive Munsell values based on the Munsell color system. In addition to hue, we also measure optical properties such as haze, glossiness, refractive index, and transmittance. 【Measurement Conditions】 ■ Applicable Standards - JIS Z8722, JIS Z8781-4, JIS Z8730, JISK7373 ASTME313, ASTM D1925 ■ Measurement Method: Reflection, Transmission ■ Measurement Apertures: 30mmφ, 10mmφ, 6mmφ ■ Measurement Shapes: Sheet, Pellet ■ Equipment: Color Difference Meter ZE6000, Nippon Denshoku Kogyo *For more details, please download the PDF or feel free to contact us.

We measure the refractive index of plastic materials. The refractive index (the ratio of the sine of the angle of incidence α to the sine of the angle of refraction β at the interface when light travels from air into a substance) is a fundamental property that can be used for purity and composition testing, material identification, and the design of optical components. We can measure samples ranging from thin film samples to those up to 5mm thick, accommodating film processing. In addition to the refractive index, we also measure optical properties such as haze, color tone, glossiness, and transmittance. 【Measurement Conditions】 ■ Applicable Standards: JIS K7142 ■ Testing Environment: 23℃ ■ Sample Shape: Approximately 10mm × 20mm ■ Equipment: Abbe Refractometer 1T/Atago ■ Measurement Wavelength: D line approximation (approximately 589nm) *For more details, please download the PDF or feel free to contact us.

We conduct friction coefficient measurements of plastic materials. The friction coefficient is defined as the ratio of frictional force to the vertical load (weight of the weight), and both the static friction coefficient (friction at the start of sliding) and the dynamic friction coefficient (friction during sliding motion) can be measured. In addition to measurements at room temperature, we also accommodate measurements at low and high temperatures. Friction coefficient measurements are sometimes used as an indicator to confirm the effects of additives (anti-blocking agents and slip agents) on the surface of films. 【Measurement Conditions】 ■ Applicable Standards: JIS K7125, ASTM D1894 ■ Measurement Temperature Range: -50 to 250℃ *For more details, please download the PDF or feel free to contact us.

We conduct Taber wear tests on plastic materials. The Taber wear test is a method for evaluating the wear resistance of material surfaces by measuring changes in mass and surface conditions (such as glossiness and haze) before and after the test to assess wear resistance. In addition to wear tests, we also provide a range of physical property tests, including tensile tests and bending tests, consistently from the molding of test specimens. 【Measurement Conditions】 ■ Applicable Standards: Reference JIS K7204 ■ Standard Test Specimen Shapes - A disc with a diameter of approximately 100mm - An octagonal plate with a thickness of 0.5 to 10mm, cut from a square with sides of approximately 100mm ■ Equipment: Taber wear testing machine / Toyo Seiki Seisakusho *For more details, please download the PDF or feel free to contact us.

Our company conducts measurements of the embrittlement temperature of plastic materials. The specimen temperature ranges from room temperature to -70°C, and the equipment used is an embrittlement temperature testing machine. After exposing the specimen to a low-temperature liquid (heat transfer medium: ethanol) for a specified period, a predetermined impact is applied, and the embrittlement temperature (the temperature at which 50% of the specimens break) is calculated from the number of fractures. 【Measurement Conditions】 ■ Applicable Standards: JIS K7216 ■ Specimen Dimensions - Type A: Length 38.0±2.0mm, Width 6.0±0.4mm, Thickness 2.0±0.2mm - Type B: Length 20.0±2.0mm, Width 2.5±0.2mm, Thickness 1.6±0.1mm - ISO974: Length 20.0±2.0mm, Width 2.5±0.2mm, Thickness 1.6±0.1mm ■ Specimen Temperature: Room temperature to -70°C ■ Equipment: Embrittlement temperature testing machine / manufactured by Toyo Seiki Seisakusho *For more details, please download the PDF or feel free to contact us.

We conduct MFR (Melt Flow Rate) measurements of plastic materials. MFR is one of the indicators that represent the flowability of resin and is widely used as a management item for quality control and assurance. The amount of resin extruded from a die installed at the bottom of the cylinder, under specific temperature and load conditions, is measured over a period of 10 minutes with the resin melted inside the cylinder. We also accommodate MVR measurements, so please feel free to consult us. 【Measurement Conditions】 ■ Applicable Standards - JIS K7210-1 - ISO 1133 - ASTM D1895 ■ Maximum Measurement Temperature: 300℃ *For more details, please download the PDF or feel free to contact us.