YOUR POSITION：HOME > Blog >

Diaper raw materials -- Backsheet film

Author：Baby & Adult Diaper Materials FROM：Diaper Materials Manufacturer TIME：2025-04-29

Today we want to talk about the backsheet film for diaper.The backsheet is the water-resistant outer layer of the diaper and it prevents liquids from passing through the diaper and leaking onto the baby's clothing or surrounding environment.In the backsheet film, it can be divided into PE film and breathable film.

1.PE film（Cast film）:PE film is divided into cast film and breathable film.PE film is one of the raw materials of diaper for packing film and back sheet,generally used for adult diapers, baby diapers can also be made.There are excellent waterproof perfomance and soft & best physical features. It is good uniformity and touch feeling, akin-friendly for baby diaper，directly used as the bottom film of diaper

(1)Cast film:The less calcium carbonate the better the quality, the more calcium carbonate the cheaper the pricethe weight is between 23-35gsm.

(2)Breathable pe film film:Formation of micropores (pore size 0.1-10 μ m) on PE film through special process.The size of the micropores allows gas to pass through but blocks liquid.Breathability can reach 1000-5000g/m ²/24h,20-30% higher cost than ordinary PE film.

新闻7.jpg

2.Laminated film.

Laminated film(cloth like film):A cloth like backsheet is made of a laminate of film and nonwoven fabric.It is basically used for baby diapers, and some adult diapers can also be used. In addition to the feel of the outfacing nonwoven fabric, the film composition, manufacturing process and lamination process used also can impact and improve softness.There are some advantages are as follows: precise contraposition, rich and colorful, excellent printing performance , excellent physical performance , environment, friendly, odorless, Non-toxic, without VOC, no benzene residue, soft and comfortable.

(1)Centered laminated film:PE film centered on non-woven fabric,relatively common.The weight is between 23-28gsm,generally, the width of non-woven fabric is 320/340mm, and the width of PE film is 175mm.

(2)Full laminated film:The price is relatively high,the weight is between 28-32gsm,generally, the width of non-woven fabric is 280/320/340mm.

新闻8.jpg