Backpack form generally include: plastic + fabric + Waterproof zippers + ribbon + clip + backplane (pvc) + mesh. Introduced here only clip.
Button, in our daily life everywhere, common to clothing shoes and hats, usually used in backpacks, camera bags, cell phone package, even MM tailor bra. Button has a presence. As a true outdoor enthusiasts to understand the performance of the backpack is necessary. Button to increase the knowledge point it should be, a common buckle brand it, basically "Duraflex", "ITW" "nifco", motley crew are now safe, Wei Sheng and some other. The best known of course, was undoubtedly the "Duraflex", but in terms of performance, "ITW" "nifco" not much less than the former.

Duraflex has three subsidiaries, namely, the U.S. company that is: NATIONAL MOLDING (U.S. mold center), South Korea's woojin-duraflex, as well as Hong Kong, China utx-duraflex. Shenzhen, China Dayton button Duraflex fittings company is authorized in the Chinese mainland manufacturers. U.S. NATIONAL MOLDING WOOJIN DURAFLEX authorized production plants in Korea, and DURAFLEX NATIONAL MOLDING more Knauf is a registered trademark.

We can see the back of the clip and the UTX-DURAFLEX WOOJIN-duraflex words, this is the factory name logo on it. The same clip also has several NIFCO name TIFCO, KIFCO are equally products of the company, ITW-NEXUS is a subsidiary of ITW, specifically raw plant clip, the quality was very good, very professional. No other known fasteners, not to mention to mention also, we are interested to buy it by jin (Quanzhou, Fujian Province reportedly bought over there by sacks).

"Duraflex", "ITW" "nifco" the product not only has strong anti-low temperature of minus 30 degrees (a lot of fasteners easy to embrittlement at low temperatures), but also in bent over under (90 degrees) is not break. The toughness of raspberry. Product quality is high in outdoor sports such security is very important in terms of, or in the outdoor journey, buckle suddenly break fart, and really make you tears, alarm nowhere, now let me introduce deduction with the type and material.

First, the clip of the classification (more complicated)

Backpack clip buckle generally classified as (also known as the Open button next to), days buckle, ladder buckles, hook buckles, tie clip, in addition to some of the more special purpose, and now tell us about the characteristics of these fasteners, use and intensity.

1, buckle

The choice of material is generally POM (polyoxymethylene, commonly known as the race just), PP and NY

Buckle buckle and the female by the male buckle component, with a ribbon at one end fixed, other end of the ribbon can be adjusted according to different needs and choose the length of ribbon, generally used for shoulder, waist fixed. Buckle for a more effective role to play, students plant the company is also under constant change, while reducing the weight and ensure the same strength, such as the v-type buckle. There are three directions, such as buttons, that is "Y"-type buttons, commonly used in baby carriages, taxi top of seat belts and other safety products, of course, different according to the backpack, there are sewing-style buckle, buckle, etc. can be rotated, in the process, also be authorized in the face of the mother buckle design color standard or LOGO, can also choose to electroplating, screen printing, painting. According to the different feel you can be polished, sprayed rubber oil and so on.

Intensity in terms of general leisure backpack buckle 25mm used can withstand a weight of 40-50 kg, and of course a good buckle up to 80-90 kg. Buckle masterpiece was undoubtedly the duraflex lobster, ITW-NEXUS-wide hollow buckle, have dominated for many years.

2 days buckle


The material is generally POM, PP, NY

In general, the days used in the backpack shoulder strap buckle, bag, shoulder strap, the webbing used to adjust the length, in order to skid, button the middle of the bar many days are designed with stripes, but also the next two bar placed to expand their own logo, usually, almost in shape.

3, ladder buckle


It's material is generally PP, POM, NY

The role of deduction is shrinking ladder ribbon, usually used in the rear strap, adjust the backpack close degree. Ladder buckle shape and function design, the classic small, duraflex the duckbill elevator button it can be regarded as enduring classics.

4, Shengkou


It's material is generally PP, NY, POM

Flexible use of coils, dislocation stuck rope, rope port optional bore size, single hole and two holes for a variety of OO with the rope, nylon rope, elastic rope. According to customer requirements and design LOGO, Shengkou the design has been very different from before, and a wide range of metal materials, too.

5, hook buckle


Its materials are generally derived from PP, NY, POM



Hook buckle shoulder bag generally used in the side, while connected to d ring, the other side of the ribbon connection. Has now joined a number of alloying elements, so that greater strength hook buckle. Not many other introduced.

Second, the clip materials characteristics and uses (see table)

Click on the map, see the big picture

Third, the clip test

Button in the testing process has two main aspects:

One: is the pull test, this test is testing the capacity of clip, it is divided into two steps:

1, an instant pull test, mainly used for buckle, D buckle, buckle on the test when suddenly encountered strong pull, buckle strength.

2, persistent tension test, its main principle in determining the load of a certain weight, clip is exposed to time value.

3 buckle was also on the detection of frequency of use, keep the opening and closing, to test the number of times, the buckle will be deformed.

Three directions, the direction of the buckle or more detection more complex.

Second: is the temperature of the test, this is primarily to test clip in the unconventional temperature tolerance, is divided into two kinds of high temperature and low temperature

1, the temperature is usually set at 70 degrees Celsius

2, the temperature is usually set at minus 30 degrees. For 24 hours, and then test the strength of the change.

Third: is the salt spray test, this test is to monitor the anti-Button salinity, some products can only be by sea transport, long run at sea, have an impact on the quality of the product, the test has two steps .

1, the buckle on the 72-hour immersion in seawater

2, the clip on the sun soaked for 5-7 days following exposure

3, after completion of the test strength not changed much.

There are some anti-acid test, etc. For example, according to different needs and material to the corresponding values ​​were detected, of which the metal clip on it but also rust and corrosion, such as drug resistance testing, the plastic buckle If the product with post processing, such as electroplating, water pollution, oil wiping process, but also to further test whether the eligibility criteria for these additional procedures.

Of course, the higher the standard test applied to the top diving and other extreme sports, what UL certification, TS16949 certification, VDA6.0 standards, manufacturers can not generally adopted by the clip.

The above is a clip of the shallow state, with the continuous development of products, varieties increasingly diversified, this is more and more strict testing.