As young people's consumption concepts change, the style of daily necessities, electronic products, sports goods and other products we use is also changing. The appearance of these products is more beautiful and the product design is more perfect to meet market demand. If each product has different applications, the product designer will use some different materials in different parts of the product to meet the application needs and practicality of the product. In order to cope with product upgrades, our plastic products industry is also constantly upgrading its processing methods, such as two-color injection molding and glue wrapping.
General glue-encapsulated products can be manufactured by a monochrome injection molding machine. Basically, injection molding machine can be competent, but the processing process is quite time-consuming and complicated, which directly affects the product quality and the total production cost is not economical. In addition to the corresponding changes in the injection molding machine, mold design technology is the soul of the entire technology. The mold achieves synchronous injection molding effect of different materials through rotation and movement.
mold design is roughly divided into two categories:
1 has two mold cavity, and the semi-forming module is transferred to another mold cavity by 180 degrees. The advantage is that the first and second processes are carried out simultaneously;
The other is a single mold cavity, and the semi-finished product rotates 180 degrees together with the mold. The design is relatively simple, but the production efficiency is reduced accordingly. Since molds or semi-finished products need to rotate, the requirements for mold design and injection molding machines are more accurate.
In addition, due to the high variability of dual-material injection molding, in order to achieve smooth production and meet the expected ideal, all mold designs must be considered at the same time as product design. The specifications of popular dual-material injection molding machines on the market are not uniform, resulting in more problems in mold design and less versatility, and mold manufacturers must pay more attention.
TPE material can be adjusted through the formulation system and can be used to achieve secondary injection molding and wrapping of hard plastics such as PP, PS, ABS, PA, PC+ABS. The products are suitable for the manufacturing of tableware, tool handles, watch cases, telephone case, buttons and other products. This makes manufacturers technically important to pay attention to three points: the adhesive bonding effect of the two materials, the complexity of the product and the adjustment of the injection molding machine. For example, due to cost or application, there may be no good adhesion between the materials used, and double-material injection molding usually requires more commissioning in this regard.
China is gradually becoming a global consumer goods production base. In recent years, plastic product manufacturers in South China and East China have undertaken many orders for two-color injection molding technology, making TPE two-color injection molding technology increasingly widely used in China.
TPE glued ABS+PC material has white or translucent plastic particles , with a density of 1.02-1.24g/cm3, and a common hardness range of 40-90A. Through two-color injection molding, it has good fluidity and good adhesion to PC plastic. TPE material has a comfortable and smooth touch, and is wear-resistant, scratch-resistant, white-resistant, slip-resistant, dust-resistant, and high temperature resistant 90℃.
TPE glue-encapsulated ABS+PC materials:
hardware products, tool handle materials, goggle shells, watch strap bracelets, sports equipment, plug cables, home appliance components, electronic digital products.
TPE material dual-color injection molding often encounters problems.
1. The product has poor gloss.
Solution: Baking temperature: 60-80℃, baking is about 2 hours.
2. Product sticker mold.
Solution: Modify the mold and adjust the TPE formula.
3. The product has water marks.
Solution: Improve exhaust and increase injection molding temperature.
4. The glue bond is not firm.
TPE glue wrapping must have components that are compatible or sticky to ABS, which means that not every grade of glue wrapping ABS can be used. Secondary injection molding processing temperature. The injection molding temperature must ensure that the material is fully plasticized to achieve the fluidity required for injection molding. At the same time, the activity of ABS compatible agent in the TPE formula increases, and it can penetrate each other with the ABS material at the glue-in contact interface within just a few dozen seconds, so that TPE and ABS can be firmly bonded. Here, one is that there must be compatible agents in the TPE formula, and the other is that there must be sufficient injection molding temperature. Both are indispensable.
Are you also looking for TPE glue wrap ABS+PC materials? Please contact Lien TPE manufacturer directly. Our company is a high-tech enterprise engaged in TPE glue wrap. The glue wrap can be bonded and coated with hard plastics such as ABS, PC, PP, PS, PA, POM, etc. Our formula library has more than 5,000 glue wrapping formula systems. Since its establishment in 2003, it has won the favor of many daily necessities, sports goods, infant products, auto parts, electronic accessories, medical devices, cultural and educational products, and toy manufacturers.
