Pull head high 2.6-2.7MM, wide mouth wide and 4.55 + 0.05 4.75-4.85 2.4 + 0.05 thickness of upper and lower stop closed tail: pressure, temperature, injection delay, pressure holding time of three to adjust, if close end zipper size around 15CM, with a certain number of rows can be used when a microphone die two band stop similarly, if the number of suitable size, can also be a bar.
Cotter: inch to ensure the lead "Times New face= FONT sharawadgi? Roman" >4.5cm (17 grains with teeth), supra tape clear pattern, or even, with about 1.5mm location away from the teeth, which can punch crochet hook, and open up the word.
Press adjustment: high pressure to no more than 100kg/cm2, 40kg/cm2,, 30kg/cm2, 10kg/cm2, low pressure, high pressure, the cooling time should be more than 1 second, according to the actual product (zipper model) to adjust the specific.
Prone to defective factors: exposed tibia (due to lower die positioning needle is broken, if appropriate) latch off (injection pressure is appropriate, holding pressure and cooling time enough) box cloth (good zipper down pressure to be cooled and then pull head)
Cloth: as the raw material of metal zipper is silk polyester yarn, thread, wire in different types of components, the component and color are different, so it is easy to produce color with a zipper, at this point in the selection to choose cloth dyeing uniformity, no muddy cloud point, made of different fabrics the cloth are mainly soft.
Microphone: metal zipper of the microphone is also a plating color, so when the purchase must pay attention to whether the surface of the color is uniform, there is no color flower phenomenon, the upper and lower pull the zipper is smooth. When the zipper is pulled, it is necessary to observe whether the left and right teeth are mutually engaged, and the asymmetry of the zipper teeth will certainly affect the use of the zipper.
Pull head: metal zipper slider can be finished more modeling, compact and detailed, and can also be bold. But no matter how the pull head, to feel the pull of the pull head is not easy, it will not pull the zipper pull or not to close the phenomenon. Now pull head on the market with a self-locking device, so the zipper pull in, to test whether the lock is fixed after the zipper will slide down.
Limit: the next stop code must be with teeth or tooth forceps in Amy, must ensure the perfect setting