YICAI Plastics

06/06/2026

05/06/2026

04/06/2026

30/05/2026

24/05/2026

今天发货的是用于屋面瓦表层的ASA流延膜（ASA Cast Film）。
产品具备优异的耐候性、抗紫外线性能和户外长期颜色稳定性，适用于高温、高紫外线环境。
广泛应用于：
✔ PVC/ASA Roofing Tiles
✔ Synthetic Resin Roof Sheets
✔ Outdoor Building Materials
✔ Long-Term Outdoor Roofing Applications
Factory direct supply
Stable quality & customized colors available.

23/05/2026

21/05/2026

20/05/2026

Real factory, real production, real quality.
Take a look inside our plastic compounding and pelletizing workshop — from raw materials to finished plastic pellets, every batch is produced under strict quality control.
We are a direct manufacturer specializing in engineering plastics, color masterbatch, and modified plastic solutions for global customers.

18/05/2026

Every batch is strictly controlled for color consistency, dispersion, heat resistance, and processing stability.
Widely used in injection molding, extrusion, film blowing, pipes, sheets, household products, and packaging industries.
Factory direct supply | Stable quality | Custom color matching | OEM & ODM support

17/05/2026

PC+ABS injection molding sink marks?

Many engineers still think: “Just increase holding pressure.”

But in real production, we often see:

Holding pressure already reaches 120MPa… Flash appears… Yet sink marks are still there.

Why?

Because sink marks are usually NOT caused by “lack of material”.

The real problem is:

👉 the packing path is already frozen.

In PC+ABS parts with ribs or screw bosses:

thin wall areas freeze first

thick sections continue shrinking

gate freezes too early

molten material can no longer feed the shrinkage area

Result:

Internal vacuum shrinkage → surface sink marks.

This is why blindly increasing holding pressure often makes things worse: ❌ flash ❌ internal stress ❌ sticking ❌ deformation

while shrinkage barely improves.

In many cases, the real solutions are:

✔ gate position optimization
✔ runner diameter improvement
✔ multi-stage packing
✔ localized mold temperature control
✔ low-shrinkage material modification

Especially for:

automotive parts

electronics housings

flame retardant PC+ABS components

we found that material + mold + process must work together.

We recently wrote a full technical article explaining:

why PC+ABS shrinkage happens

why holding pressure fails

how to truly improve sink marks

Read the full article on our website.