ASTM D4846 Snap Button Pull Tester

Applications:

The ASTM D4846 Snap Button Pull Tester is used to measure the pull-off force required to separate completely the stud from the socket of a snap fastener assembly. It is used to test the strength of snap fasteners, which are commonly used in clothing, bags, and other items. The tester is designed to apply a gradually increasing load to the snap fastener until it fails. 

Product Description:

This machine is suitable for testing the fixation and adhesion strength of small accessories such as buttons, buttons, bows, five-claw buckles on clothing, toys and footwear. Especially baby and children's clothing, to define the responsibility of the manufacturer of ready-to-wear. Ensure that buttons, buttons and fasteners can be properly fixed on the garment to prevent the buttons from falling off the garment, causing the baby to have the opportunity to swallow and suffocate the danger of suffocation and the mechanical hazards such as sharp edges and corners caused by loosening.

Working principle: 

Clamp the sample with attachments (such as fabrics with buttons, etc.) on the fabric fixture at the bottom of the instrument, select a suitable fixture to install it on the push-pull gauge, hold the attachments, and apply tension to make the attachments Remove the fabric and test its force value; or apply a certain tension value for a certain period of time to test whether the attachment can still be firmly connected to the fabric. appendix: Push-pull gauge: 300N (optional) Bottom fabric gripper: for gripping fabrics with attachments Grips for Male Buttons: for holding convex five-jaw buttons for pull testing Special grips for female buttons: for holding concave five-jaw buttons for tensile testing Needle-nose pliers grips: for gripping other garment accessories for pull testing, such as buckles Three-prong clamp: used to hold common four-hole buttons or jeans buttons for pull test, Flat vise grips: for holding large buttons for pull testing Lever for locking/unscrewing bottom clamp locking knob Calibration weight: 15Lb

Standards:

16 CFR 1500.51-53, ASTM WK4510 PS79-96, ASTM F963, EN71-Part1, M&S P115A

Product Parameters

Detailed Photos

FAQ

(1)What is an ASTM D4846 Snap Button Pull Tester used to test?

The ASTM D4846 Snap Button Pull Tester is used to evaluate the resistance of snap fasteners to unsnapping by measuring the force required to separate a snap button from the material. It is mainly applied to garments, textile products, and accessories containing snap fasteners. The test helps manufacturers verify whether snap buttons have sufficient attachment strength and whether the fastening performance meets product quality requirements.

(2)Why is snap button pull strength testing important for clothing manufacturers?

Snap button pull strength testing is important because snap fasteners must remain securely attached during normal product use. Loose or detached snaps may affect garment durability and, in some applications such as children's clothing, may create safety concerns. By measuring snap pull resistance, manufacturers can evaluate fastening reliability, control production quality, and reduce failures caused by insufficient attachment strength.

(3)What standard does the Snap Button Pull Tester comply with?

The Snap Button Pull Tester is mainly used for testing according to ASTM D4846 – Standard Test Method for Resistance to Unsnapping of Snap Fasteners. This standard describes the method for determining the force required to disengage snap fasteners. Manufacturers and testing laboratories use ASTM D4846 as a reference method when evaluating the holding strength of snap fasteners used in textile products.

(4)What types of products can be tested with a Snap Button Pull Tester?

The Snap Button Pull Tester is commonly used for products with snap fasteners, including jackets, shirts, children's garments, sportswear, outdoor clothing, bags, and other textile accessories. It can be applied in garment factories, textile laboratories, inspection organizations, and snap fastener manufacturing companies for quality evaluation and product development.

(5)How is snap button pull strength measured according to ASTM D4846?

According to ASTM D4846, the snap fastener is secured using appropriate fixtures, and a tensile force is applied until the snap separates. The force required to cause separation is recorded as the snap fastener resistance value. Proper sample preparation, fixture alignment, and testing conditions are important factors for obtaining reliable and repeatable results.

(6)What factors can affect snap fastener pull test results?

Snap button pull strength can be influenced by several factors, including snap button design, material properties, fabric type, attachment method, sewing quality, and test direction. Differences in production processes or materials may lead to variations in test results. Therefore, manufacturers typically use standardized test methods to compare product performance consistently.

(7)Who needs a Snap Button Pull Tester?

The Snap Button Pull Tester is mainly used by garment manufacturers, textile testing laboratories, quality inspection companies, and snap fastener suppliers. It is especially valuable for companies producing export garments, children's apparel, workwear, and safety-related clothing where fastening reliability needs to be verified before shipment or mass production.

(8)How can manufacturers improve snap button performance based on test results?

Test results from the Snap Button Pull Tester can help manufacturers identify whether failures are caused by snap button selection, fabric compatibility, or attachment processes. By analyzing pull strength data, manufacturers can optimize materials, improve production methods, and establish quality control criteria to ensure more consistent snap fastener performance.