尼龙搭扣1941

黏扣带使用方式多元且自由度高，大量应用于户外用品，如背包、帐篷、安全配备、运动服饰、运动鞋等。勾毛背对背产品可轻松整束鱼竿或绳结；超声波压合的绑物带则可依需求调节长度，快速收纳睡袋、帐篷。即使在严峻的环境中，黏扣带的强劲拉力仍能发挥效用。

钩状结构制程

传统黏扣带的钩面由尼龙纱编织成圈状后，将圈状顶端处切断，形成细钩造型。后来依据黏着性、耐久性等需求，以热加工制程直接将钩面热融为香菇头造型。近期也有以塑胶射出成型，直接制作出钩型结构，可增加横向拉力，也省去了车缝与高周波压合等制程。

Velcro is a brand of versatile fastening devices, known as hook-and-loop fasteners, hook-and-pile fasteners, or touch fasteners, that allow two surfaces to be repeatedly attached and detached with ease. A trademark of Velcro Companies, the brand name is often used generically to refer to this type of fastener. Invented in the mid-20th century, it is widely used in clothing, accessories, and various industrial and consumer applications. The fastener consists of two complementary components: one with tiny hooks and the other with soft loops. When pressed together, the hooks catch the loops, creating a secure but temporary bond. The fasteners can be separated by peeling or pulling the surfaces apart, often producing a distinctive ripping sound.

History

The original hook-and-loop fastener was conceived in 1941 by Swiss engineer George de Mestral, which he named velcro. The word Velcro is a portmanteau of two French words: "velours" meaning velvet, and "crochet" meaning hook. The idea came to him one day after he returned from a hunting trip with his dog in the Alps. He took a close look at the burs of burdock that kept sticking to his clothes and his dog's fur.

Strength

Various constructions and strengths are available. Fasteners made of Teflon loops, polyester hooks, and glass backing are used in aerospace applications, e.g. on Space Shuttles. The strength of the bond depends on how well the hooks are embedded in the loops, how much surface area is in contact with the hooks, and the nature of the force pulling it apart.

Advantages and disadvantages

Hook-and-loop fasteners are safe and maintenance free. There is only a minimal decline in effectiveness even after many fastenings and unfastenings. The tearing noise it makes can also be useful against pickpockets. This loud noise can also prove to be a liability, in particular on military attire such as the United States Army's Army Combat Uniform, where it can attract unwanted attention in a battlefield environment.

Applications

Because of their ease of use, hook-and-loop fasteners have been used for a wide variety of applications where a temporary bond is required. It is especially popular in clothing where it replaces buttons or zippers, and as a shoe fastener for children who have not yet learned to tie shoelaces.

Variations

The Slidingly Engaging Fastener was developed to address several problems with common hook-and-loop fasteners.

Heavy-duty variants (such as "Dual Lock" or "Duotec") feature mushroom-shaped stems on each face of the fastener, providing an audible snap when the two faces mate. A strong pressure sensitive adhesive bonds each component to its substrate.

There is a silent version of hook-and-loop fasteners, sometimes called Quiet Closures.

Standards

ASTM D5169-98 (2010) Standard Test Method for Shear Strength (Dynamic Method) of Hook and Loop Touch Fasteners

ASTM D5170-98 (2010) Standard Test Method for Peel Strength ("T" Method) of Hook and Loop Touch Fasteners

ASTM D2050-11 Standard Terminology Relating to Fasteners and Closures Used with Textiles

Jumping

Velcro jumping is a game where people wearing hook-covered suits take a running jump and hurl themselves as high as possible at a loop-covered wall. The wall is inflated, and looks similar to other inflatable structures. It is not necessarily completely covered in the material—often there will be vertical strips of hooks. Sometimes, instead of a running jump, people use a small trampoline.

In popular culture

1966–1969 – In Star Trek: The Original Series, Velcro was used instead of belts or holsters as a space-age way to attach phasers and communicators to crew uniforms.

1969–1972 – Velcro-brand fasteners were used on the suits, sample collection bags, and lunar vehicles during all Apollo program missions to the Moon.