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Injection Moulding of BMC

Bulk Moulding Compound (BMC) and Continuous Impregnated Compound (CIC) is usually injection moulded. But also other compounds such as Sheet Moulding Compound (SMC) and are often moulded in a tool / injection moulding machine under injection moulding. Even SMC grades specially designed for injection moulding are offered by Menzolit to achieve a maximum in mechanical properties. Injection moulding is used predominantly to manufacture thermoplastic parts, and it can produce very complex parts very quickly. Also thermoset materials such as BMC and CIC are widely used to produce small electrical devices such as switch gears or most of the headlamp reflectors of cars and trucks. The mould usually comprises two sections held together by a clamp strong enough to withstand the pressure of injected material, with channels for heating. Basic requirements on an injection machine The BMC or CIC is filled into the compaction unit of the injection moulding machine and fed into the tool by a screw. Speed or pressure determines the part quality regarding mechanical properties or surface quality. The less force is applied the higher the mechanical properties will be – the faster the injection occurs the better the surface will appear. Injection moulding Used for high volume | Easier automation | Lower mech. Propertiers vs. compression moulding SMC Injection moulding of BMC and CIC is a perfect way to fully automate the production process of large volume series of parts. The machine and its peripheral devices can handle material feed, moulding, de-moulding and often post-moulding operations easily.   The moulding process Use always the same process parameters. Make sure every cycle is identical in time (from placement of charge to mould close) and process parameters. Maintain uniform mould surface temperature +-2°C. Make the part come off easy at de-moulding. If this is not the case please check for ejector pins and undercuts. Check parallelism of ejector plate too. Take off the part carefully and place part in cooling fixture to cool down in well defined position (nominal part contour, no clamping) and shape. If all these advice are taken care off the only thing you need to make sure is to order the right material from Menzolit.

Injection Moulding of BMC

Bulk Moulding Compound (BMC) and Continuous Impregnated Compound (CIC) is usually injection moulded. But also other compounds such as Sheet Moulding Compound (SMC) and are often moulded in a tool / injection moulding machine under injection moulding. Even SMC grades specially designed for injection moulding are offered by Menzolit to achieve a maximum in mechanical properties. Injection moulding is used predominantly to manufacture thermoplastic parts, and it can produce very complex parts very quickly. Also thermoset materials such as BMC and CIC are widely used to produce small electrical devices such as switch gears or most of the headlamp reflectors of cars and trucks. The mould usually comprises two sections held together by a clamp strong enough to withstand the pressure of injected material, with channels for heating. Basic requirements on an injection machine The BMC or CIC is filled into the compaction unit of the injection moulding machine and fed into the tool by a screw. Speed or pressure determines the part quality regarding mechanical properties or surface quality. The less force is applied the higher the mechanical properties will be – the faster the injection occurs the better the surface will appear. Injection moulding Used for high volume | Easier automation | Lower mech. Propertiers vs. compression moulding SMC Injection moulding of BMC and CIC is a perfect way to fully automate the production process of large volume series of parts. The machine and its peripheral devices can handle material feed, moulding, de-moulding and often post-moulding operations easily.   The moulding process Use always the same process parameters. Make sure every cycle is identical in time (from placement of charge to mould close) and process parameters. Maintain uniform mould surface temperature +-2°C. Make the part come off easy at de-moulding. If this is not the case please check for ejector pins and undercuts. Check parallelism of ejector plate too. Take off the part carefully and place part in cooling fixture to cool down in well defined position (nominal part contour, no clamping) and shape. If all these advice are taken care off the only thing you need to make sure is to order the right material from Menzolit.

Injection Moulding of BMC

Bulk Moulding Compound (BMC) and Continuous Impregnated Compound (CIC) is usually injection moulded. But also other compounds such as Sheet Moulding Compound (SMC) and are often moulded in a tool / injection moulding machine under injection moulding. Even SMC grades specially designed for injection moulding are offered by Menzolit to achieve a maximum in mechanical properties. Injection moulding is used predominantly to manufacture thermoplastic parts, and it can produce very complex parts very quickly. Also thermoset materials such as BMC and CIC are widely used to produce small electrical devices such as switch gears or most of the headlamp reflectors of cars and trucks. The mould usually comprises two sections held together by a clamp strong enough to withstand the pressure of injected material, with channels for heating. Basic requirements on an injection machine The BMC or CIC is filled into the compaction unit of the injection moulding machine and fed into the tool by a screw. Speed or pressure determines the part quality regarding mechanical properties or surface quality. The less force is applied the higher the mechanical properties will be – the faster the injection occurs the better the surface will appear. Injection moulding Used for high volume | Easier automation | Lower mech. Propertiers vs. compression moulding SMC Injection moulding of BMC and CIC is a perfect way to fully automate the production process of large volume series of parts. The machine and its peripheral devices can handle material feed, moulding, de-moulding and often post-moulding operations easily.   The moulding process Use always the same process parameters. Make sure every cycle is identical in time (from placement of charge to mould close) and process parameters. Maintain uniform mould surface temperature +-2°C. Make the part come off easy at de-moulding. If this is not the case please check for ejector pins and undercuts. Check parallelism of ejector plate too. Take off the part carefully and place part in cooling fixture to cool down in well defined position (nominal part contour, no clamping) and shape. If all these advice are taken care off the only thing you need to make sure is to order the right material from Menzolit.

SMC方面的介绍

 A:什么是SMC

1.SMC是英文Sheet Molding Compound 的字首缩写，中文名称为片状模塑料，是复合材料领域的重要成员之一

2.SMC是一种半干法制造玻璃纤维增强热固性制品的模压中间材料,由不饱和聚酯树脂、低收缩/低轮廓添加剂、引发剂、内脱模剂、矿物填料等预先混合成糊状,再加入增稠剂、着色剂等混合均匀后,对短切玻璃纤维进行充分浸渍,进行增稠过程,最终形成片状的"SANDWICH型夹芯"结构.

3.SMC模压成型工艺目前是最先进、最重要的玻璃纤维增强型塑料成型方式之一.

 B：SMC材料的优势

1.产品的重现性好,受操作者和外界条件因素影响很少；

2.生产效率高,成型周期短,易于实现全自动机械化操作,生产成本相对较低.

3.流动性好,可成型异型制品及结构(如筋、台、预埋件等复杂结构)；

4.所得制品表面光洁度高,采用低收缩添加剂后,表面质量更为理想；

5.可实现良好的内着色装饰效果

6.可实现良好的阻燃特性和电绝缘特性；

7.低的热导率和良好耐腐性。

BMC方面的介绍

A:什么是BMC

1.BMC是英文Bulk Molding Compound的字首缩写，中文名称为团状模塑料

2.BMC是一种半干法制造玻璃纤维增强热固性制品的模压中间材料,由不饱和聚酯树脂、低收缩/低轮廓添加剂、引发剂、内脱模剂、矿物填料等预先混合成糊状,再加入增稠剂、着色剂等,与不同长度的玻璃纤维,在专用的料釜中进行搅拌,进行增稠过程,最终形成团状的中间体材料,可用于进行模压和注塑.

 B：BMC材料的优势

1.尺寸精度和尺寸稳定性优良,变形小.

2.线性膨胀系数小.

3.刚性耐热性能优良.

4.壁厚变化较大的产品的设计是可行的,可进行低压成型.

Injection Moulding of BMC

Bulk Moulding Compound (BMC) and Continuous Impregnated Compound (CIC) is usually injection moulded. But also other compounds such as Sheet Moulding Compound (SMC) and are often moulded in a tool / injection moulding machine under injection moulding. Even SMC grades specially designed for injection moulding are offered by Menzolit to achieve a maximum in mechanical properties. Injection moulding is used predominantly to manufacture thermoplastic parts, and it can produce very complex parts very quickly. Also thermoset materials such as BMC and CIC are widely used to produce small electrical devices such as switch gears or most of the headlamp reflectors of cars and trucks. The mould usually comprises two sections held together by a clamp strong enough to withstand the pressure of injected material, with channels for heating. Basic requirements on an injection machine The BMC or CIC is filled into the compaction unit of the injection moulding machine and fed into the tool by a screw. Speed or pressure determines the part quality regarding mechanical properties or surface quality. The less force is applied the higher the mechanical properties will be – the faster the injection occurs the better the surface will appear. Injection moulding Used for high volume | Easier automation | Lower mech. Propertiers vs. compression moulding SMC Injection moulding of BMC and CIC is a perfect way to fully automate the production process of large volume series of parts. The machine and its peripheral devices can handle material feed, moulding, de-moulding and often post-moulding operations easily.   The moulding process Use always the same process parameters. Make sure every cycle is identical in time (from placement of charge to mould close) and process parameters. Maintain uniform mould surface temperature +-2°C. Make the part come off easy at de-moulding. If this is not the case please check for ejector pins and undercuts. Check parallelism of ejector plate too. Take off the part carefully and place part in cooling fixture to cool down in well defined position (nominal part contour, no clamping) and shape. If all these advice are taken care off the only thing you need to make sure is to order the right material from Menzolit.