在礼盒包装之，中内托的作用非常重要，不仅能起到固定产品、保护产品的作用，还能衬托整个包装更加美观，下面食品包装礼盒厂家就给大家介绍一下定制厂家常用三种内托材质区别。

In gift box packaging, the role of inner lining is very important. It can not only fix products and protect products, but also foil the whole packaging more beautiful. Below, food packaging gift box manufacturers will introduce the differences of three kinds of inner lining materials commonly used by custom manufacturers.

珍珠棉

Pearl cotton

EPE（ExpandablePolyethylene），是可发性聚乙烯。是非交联闭孔结构，它是以低密度聚乙烯（LDPE）为主要原料挤压生成的高泡沫聚乙烯制品，它是由低密度聚乙烯脂经物理发泡产生无数的独立气泡构成。

EPE (expandable polyethylene) is expandable polyethylene. It is a non crosslinked closed cell structure. It is a high foam polyethylene product extruded with low-density polyethylene (LDPE) as the main raw material. It is composed of countless independent bubbles generated by physical foaming of low-density polyethylene grease.

克服了普通发泡胶易碎、变形、回复性差的缺点。具有隔水防潮、防震、隔音、保温、可塑性能佳、韧性强、循环再造、环保、抗撞力强等诸多优点。在礼盒生产厂家，珍珠棉可以跟各种色彩的绒布搭配在一起，让礼盒更加出彩。

It overcomes the shortcomings of ordinary styrofoam, such as fragility, deformation and poor recoverability. It has many advantages, such as water-proof and moisture-proof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong impact resistance and so on. In gift box manufacturers, pearl cotton can be matched with various colored flannels to make the gift box more colorful.

海绵

Sponge

大都是由多异氰酸酯和多元醇作原料来合成的，基本反应是多元醇与多异氰酸酯生产聚氨酯的反应，常用的海绵学名叫聚氨酯软发泡橡胶，聚氨酯是生活中常见的一种高分子材料，广泛应用于制作各种“海绵”制品。海绵因其拥有较好的回弹性，所以常使用于玩具礼盒、电子产品包装之中。

Most of them are synthesized from polyisocyanates and polyols. The basic reaction is the reaction between polyols and polyisocyanates to produce polyurethane. The commonly used spongy science is called polyurethane soft foaming rubber. Polyurethane is a common polymer material in life, which is widely used to make various "sponge" products. Because of its good resilience, sponge is often used in toy gift boxes and electronic product packaging.

EVA

EVA

是由乙烯（E）和乙酸乙烯（VA）共聚而制得简称为EVA。EVA的特点是具有良好的柔软性，橡胶般的弹性，在-50℃下仍能够具有较好的可挠性，透明性和表面光泽性好，化学稳定性良好，抗老化和耐臭氧强度好，无毒性。

It is prepared by copolymerization of ethylene (E) and vinyl acetate (VA), which is called EVA for short. EVA is characterized by good softness, rubber like elasticity, good flexibility at -50 ℃, good transparency and surface gloss, good chemical stability, good anti-aging and ozone resistance, and non-toxic.

珍珠棉、海绵、EVA三者的区别主要有以下几点：

The main differences among pearl cotton, sponge and EVA are as follows:

1.用肉眼可以区别，海绵的话很有弹性，相对来说比这三者要轻。EVA的话有点硬硬的，一般是黑色，是三者里面较重的。EPE珍珠棉一般都是白色和黑色的，跟海绵很好区分，海绵不管你随便怎么按都分恢复原状，而EPE珍珠棉没有回弹性，假若你使劲按下去按的地方会凹下去的状态。

1. It can be distinguished with the naked eye that sponges are very elastic and relatively lighter than the three. EVA is a little hard, usually black, which is the heavier of the three. EPE pearl cotton is generally white and black, which is very different from sponge. The sponge will be restored to its original state no matter how you press it, but EPE pearl cotton has no elasticity. If you press it hard, the place where you press it will be concave.

2.EPE珍珠棉有波浪纹的，看上去有很多泡沫沾在一起，很轻。EVA是实体形的，有分浓度是多少的，相比之下较重。

2. EPE pearl cotton has wavy lines, which looks like a lot of foam sticking together, very light. EVA is solid, and its component concentration is relatively heavy.

高档礼品盒定制家常用三种内托材质区别就是这样了，如果您对其有疑问就来我们网站http://www.sdynbz.com咨询了解吧。

High end gift boxes are often customized with three kinds of inner support materials. That's the difference. If you have any questions about them, please come to our website http://www.sdynbz.com Consult and understand.