Factory of High Quality PBT Plastic Sheet and Rolls

Plastic PBT Film and Sheet

What PBT films can SUNYO offer?

SUNYO plastics have been a leading factory to extrude PBT sheet and film in China. Not many extrusion factories in China are capable of producing high performnace PBT plastics films. PBT has similar characteristics to that of PET. However Polybutylene Terephthalate sheet has much more impact-resistance and is more durable.

SUNYO offers PBT films and sheets with very good dimensional stability. It is high heat-resistant, chemical-resistant and anti-scratches. Our PBT demonstrates high flexural, and tensile strengths, low shrinkage rage. Furthermore, it has good prints adhesion capabilities.

SUNYO PBT films is suitable for printed electronics, appliance, sports goods, suitable for printing graphics on, adhesion to other material.

MODEL	SY- P400N
THICKNESS	0.15-3.0mm
WIDTH	300mm-1500mm
Form	Sheet and roll
COLOR	Transparent , or customized
CERTIFICATION	ISO9001, REACH, ROHS, FDA, EN71, Phthalate free
Material	Grade A Virgin grade
Methods	Extrusion

Manufacturer white PET Sheet film and rolls

Features of SUNYO PBT plastic films and sheet

SUNYO PBT films is suitable for printed electronics, appliance, sports goods, suitable for printing graphics on, adhesion to other material.

SUNYO PBT films is suitable for printed electronics, appliance

High-heat resistant
High molecular weight
Anti-scratches

Good impact strength
Good stiffness
Good chemical resistance

What is PBT plastic material?

PBT is a type of semi-crystalline thermoplastic polyester, milky white, translucent or opaque. It has excellent high heat resistance, toughness, fatigue resistance, self-lubricating and low friction coefficient. It is not resistant to strong acid and alkali, but resistant to organic solvents. It is flammable and can be decomposed at high temperature. PBT, polybutylene terephthalate, also known as polytetramethylene terephthalate, which is referred to as PBT, PBTP or PTMT.

PBT resin is obtained by the polycondensation of 1.4-pbt butylene glycol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalic acid ester (DMT). It is made into thermoplastic polyester resin through a mixing process.

How PBT film and sheet is manufactured from raw material?

PBT plastic film sheet roll production process

Step1: Pour PBT resin into crystal tank, crystallize it at 150 degrees for 2 hours, until the PBT resin turns into white color.

Step 2: The crystallized PBT will be pumped into a drying tank, and kept dry at 130-140 degrees for 3 hours, to ensure that there is no moisture in the PBT resin.

Step 3:Then the fully dried PBT raw material is pumped into the extruder. The temperature of the extruder should be adjusted to a suitable range, to ensure the PBT raw material can be extruded smoothly, in the sleeve of the extruder. The normal feeding temperature is 190 °C. The temperature of the middle section of the extruder is about 240 degrees. And the temperature of the outlet is about 220 degrees. Different extruder require different temperature control.

Step 4: The fully melted PBT is pushed by the screw, through the tube, and into the mold. The temperature of the tube and mold is about 220 degrees. The thickness of the PBT sheets is set by the PLA program of the machine. The program adjust the opening size of the die lip of the mold, to make the wanted thickness.

Step 5:The PBT semi-finished film flowing out from the mold, is pressed and fixed into a sheet by the roller, and then cooled and shaped. After total cooling, pack the PBT sheet and film.

The Characteristics of PBT sheets.

Excellent electrical property
Great mechanic and chemical property
Weather-resistant
Easy to mold
High resistance to fuels, oil, fats and many solvents

PBT plastic sheet or film Technical Data

Property	Value	Unit	Test method
Melting Index (250℃×2.16kg)	18～22	g/10min	ASTM D1238
Specific gravity	1.31	CM³/G	ASTM D792
Melting point	225	℃	ASTM DSC
Heat deflection temperature under load			ASTM D648
– 18.6 ㎏/㎝²	60	℃	ASTM D648
-4.6 ㎏/㎝²	155	℃	ASTM D648
Moisture absorption (24h)	0.06	％	ASTM D570
Dielectric strength, 2 ㎜	20	KV/㎜	ASTM D149
Volume resistivity		Ω-㎝	ASTM D257
Surface resistivity		Ω	ASTM D257
Arc resistance	120	SEC	ASTM D495
Tensile strength	530	㎏/㎝²	ASTM D638
Tensile elongation	55	%	ASTM D638
Flexural strength	820	㎏/㎝²	ASTM D790
Flexural modulus	23500	㎏/㎝²	ASTM D790

Applications of PBT sheets

PBT sheet has good chemical resistance. It does not react with alcohols, ethers, high molecular weight vinegars, aliphatic hydrocarbons, acids and salts in aqueous solutions. It can withstand carbon tetrachloride, but swells strongly in dichloroethane. It is resistant to aromatic hydrocarbons, acetic acid, vinyl acetate. It also swells somewhat and decomposes in concentrated and nitric acids. PBT film can be processed by turning, bonding, ultrasonic welding, printing, coating, hot melt adhesive spraying. With such features, PBT can be very widely used.

1. Used as insulating spacer.

PBT sheet has good chemical resistance, heat resistance, and electrical property. It is easy for second processing. The cost of processing is quite low. This make PBT sheet a good insulating material.

2. For processing insert products

In conditions with high relative humidity, the plasticity is easily reduced, and electrical nodes are prone to corrosion. Modified PBT is often used. At 80 degrees and 90% relative humidity, PBT can still remain normal condition. And its physical and chemical condition stays good. Solder resistance is very beneficial for processing insert products.

3.Used for making wear-resistant layer on skateboard surface

PBT sheets are heat resistant, easy for printing, spaying and coating. SUNYO PBT sheets are available with gloss, super matte, light sanded or rough sanded surface.

The light sanded and rough sanded surface is easy to glue with wooded board. And the surface is very wear-resistant. We have customers used the PBT sheets for skateboard surface, and test the wear-resistance many times. The wear resistance of PBT sheet is much stronger than that of PC, PET, ABS sheet.

When PBT sticks to the skateboard, it will not be degummed or deformed. And the friction coefficient of the PBT sheet surface and the ground contact is just in line with the standards of professional skaters. The PBT sheets for skateboard is one of SUNYO’s most popular product. We have been cooperating with the world’s top 10 skateboard manufacturers for years. Our quality of PBT film is highly praised by our customers.

4. PBT sheets as cushion for suitcases

PBT has low water absorption, good chemical resistance, and is not easy to deform. It is easy to stick to PU, leather, and fabrics. It is easy to process and low cost for processing. It is the preferred material for luggage pads. The chemical resistance of PBT can meet well with the needs of luggage manufacturers. Luggage liners made of PBT sheets, reduce the deformation of bags.