1. Introduction
Non-woven fabric is made of man-made fibers. In recent years, with characteristics of moisture-resistance, lightweight, non-toxicity and low cost, non-woven fabric has gradually come into people’s view and has been widely used in many fields. Ultra-fine calcium carbonate, as a widely used inorganic powder filler, can be used in the production of non-woven fabrics. It can not only reduce production costs, but also improve the performance of non-woven fabric, so, the role of ultra-fine calcium carbonate in non-woven fabric is important. Generally speaking, the amount of calcium carbonate added should not exceed 5% of the product weight.
2. The role of ultra-fine calcium carbonate in non-woven fabric
Enhance material hardness
Adding a certain proportion of ultra-fine calcium carbonate can significantly enhance the hardness of non-woven fabric and make product performance more stable.
Improve tear resistance
Adding ultra-fine calcium carbonate during non-woven production can effectively increase the tear resistance of the fabric and improve its overall quality.
Increase flexibility
Adding ultra-fine calcium carbonate can make non-woven fabric softer and more elastic, suitable for certain special uses.
Reduce costs
As an inorganic and cheep powder filler, ultra-fine calcium carbonate can reduce production costs of non-woven fabric.
3. Index for calcium carbonate
When selecting calcium carbonate as filler for non-woven fabric, calcium carbonate with following index can be selected:
① Particle size: the preferred particle size is 4-8 um.
② Moisture: the general requirement is ≤0.5%.
③The higher the whiteness, the better. Generally, the whiteness is required to be ≥ 90%. The whiteness of high-quality calcium carbonate can reach more than 95%.
④The oil absorption value should be low, the reference value is ≦20-23g/100g.
4. Application
Non-woven fabric with added ultra-fine calcium carbonate is widely used in many fields, such as automotive interiors, mattresses, furniture and packaging materials. The addition of calcium carbonate can make non-woven fabric products stronger and more textured.
As a filler, the particle size and purity of ultra-fine calcium carbonate have an important impact on the performance of non-woven fabric. In order to ensure the quality and performance of non-woven fabric, ultra-fine calcium needs to be crushed and graded. Through grinding and classifying, ultra-fine calcium can play a better role in non-woven fabric.
Qingdao Epic Powder Machinery Co., Ltd is a manufacturer specializing in the production of powder machinery. Roller mill and air classifier from our company are suitable for grinding and classifying of ultra-fine calcium, with excellent performance and reasonable prices.
Our main products include:
– Mills: مطحنة الأسطوانة, مطحنة الكرات, air classifier mill(ACM), jet mill and turbo mill etc.
– Air Classifiers: include four series: هيئة تحرير الشام, ITC, MBS and CTC .
– Surface coating modifiers: pin-mill modifier, turbo-mill modifier و three-roller-mill modifier, etc.
– Auxiliary equipment: control cabinet, dust collector and bucket elevator, etc.
– Customers can customize products according to actual needs. One customer, one design.
If you have relevant demands for roller mill or air classifier or other products from ملحمة تشينغداو, contact our staff directly, we are always at your service.
Below are products from Qingdao Epic for your reference.
