Udseendet af forskellige uregelmæssige linjer på overfladen af TPE-produkter, som påvirker produkternes udseendekvalitet, skal være fælles. Forskellige teksturfejl på overfladen af TPE-produkter kan opdeles i følgende to situationer i henhold til deres årsager:
1. Injektionsflowmærke
Injektionsflowmærke er sporet af flow af smeltet metal, som tager porten som centrum og præsenterer stribeform. Flow mark is the boundary between the material injected into the mold cavity and the material flowing after it. In order to prevent the formation of injection streaks, it is necessary to increase the injection temperature, improve the fluidity and adjust the injection speed.
Løsning: reduce the injection speed properly. Ud over, if the molding temperature is too high, the material will decompose and produce gas, which will also lead to the formation of flow marks. Ud over, the molding temperature should be controlled. If the material contains moisture, when the water is formed at high temperature, the water evaporates to form gas, which also leads to the appearance of flow marks, and if the molding temperature is low, no tone pockmarks are formed.
2. Material flow mark
The formation of flow marks is independent of gas. It is mainly affected by material fluidity, plasticization degree, injection mold temperature and gate temperature. The structure of injection mold and runner affects the fluidity of materials. If the melt filling is not completed quickly, the melt temperature and flow rate will decrease, and flow marks will be formed on the surface of the product;
Løsning: if the injection mold temperature and gate temperature are too low, the friction between the melt and the injection mold surface will increase, resulting in material flow marks;
The injection mold temperature and mold gate temperature should be increased properly. The material plasticization is not enough, melting is not good, easy to cause obvious material flow mark on the product surface; solution: correctly increase the injection temperature and screw speed to enhance the plasticization.
3. Sticky phenomenon
Compared with resin, the surface of soft TPE injection molding products is more prone to sticky phenomenon.
Løsning: at this time, we can reduce the molding temperature, low shear, and use nitrogen to purify the internal part of the hydraulic cylinder block of the molding machine to solve the problem of sticking on the surface of the product. Ud over, when the molding machine is suspended, the rubber is placed in the mold cavity of the molding machine in a molten state for a long time, and sometimes it will become sticky due to thermal aging. Ud over, the products used in high temperature are easy to appear sticky phenomenon. Derfor, the selection and dosage of stabilizers and softeners should be selected reasonably.
Om JasonMould Industrial Company Limited
Jasonmould er en Kina mold maker af plastforme- sprøjtestøbeform, formstøbning forme, plastblæsestøbning, rotationsstøbning, medicinsk plast sprøjtestøbning, to skud plast sprøjtestøbning, indsatsstøbning, overformning, metal sprøjtestøbning, mikro sprøjtestøbning, pulverformsprøjtning, keramisk sprøjtestøbning, flydende sprøjtestøbning, husky sprøjtestøbning, husholdningsskimmel, støbeform, formværktøj, brugerdefinerede forme, porcelæn forme, værktøj til hurtig prototyping, værktøj til prototyper i plastik, slagpresseværktøj, dør og værktøj til mobiltelefon/ mobiltelefondele, bildele, støvsugere, genopladelige værktøjer, telefoner, kopimaskiner, computere, multimediehøjttalere, og mange andre elektroniske produkter og husholdningsapparater. Og også en plastproduktproducent, skimmel producent Kina- plastikdele, vandtank i plast, plastik bolde, plastbeholdere, plastspænde, plastanker, plast bøjle, plastske, rørledning i plast, tumlet plast, bordservice i plast, plastik kopper, plastik flasker, plastbakke, kosmetisk beholder af plast, plastkasse, madbeholder i plast, plaststole, plastikkapper, lukning af plasthætte, plastrør, vandrør i plast, plastik knapper, plastrør, brugskasser i plast, plaststativer og så videre.
Kontakt:
Person: James Yuan
Selskab: JasonMould Industrial Company Limited
Tilføje: LongGang Village,LongXi Town,BoLuo County,HuiZhou City,GuangDong-provinsen, Kina
Tlf: 86-752-6682869
E-mail: [email protected]
Websted: https://www.jasonmolding.com/custom-injection-molding/
