corn starch based biodegradable additive

1.Biodegradable starch blend plastic resin 2.Film blowing type 3.Biodegradable additive 4.mixing ratio reach 50% 5.additive

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Product Description                                                              

   resin granules in cylindrical crystal shape ,with slight starch fragrance ,in light yellow colour .The resin  base on corn starch which is a kind of renewable material .It is a fully biodegradable and compostable polymer resin . Its finished products have a good mechanical strength ,glossy surface ,perfect elongation strength ,good flexibility and toughness . This type of products suit for film blowing .

Applications are bags (compost bags, lawn & leaf bags, pet waste bags, trash bags, grocery bags ,carry-out bags, shopping bags etc), agricultural film, consumer and industrial packaging.

Product Properties                                                               

project	testing method	Testing condition	unite	standard
density	ASTM D792-08	@23 °C	g/cm3	1.18
melt-mass flow rate	ASTM D1238	@190 °C, 2.16kg	g/10 min	1.0-2.0
melting point	ASTM D794-06		°C	123
vicat softening point temperature (VST)	ASTM D1525-09	1mm2/1mm	°C	78
Bio-substance content	ASTM D6866		%	≥6 5

Procession Equipment                                                           

 common film blowing machine equipments available

using film extruder rotation screw of L/D  ratio ≥30 : 1(diameter 35mm) , which will help the finished film to achieve best film quality

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Procession Technology                                                           

a.     the screw rotation should be slow at first ,and then adjust the screw rotation faster to match the request.b.     fleshly blown film product feels a little brittle and crisp ,due to dehydration in production ,after 24 hours ,its function regains to normal plastics . c.      the preferred blow-up ratio is 1:2.5, the height from die of orifice to the nip roll should be higher than 2.5m which to insure full cooling and prevent film blocking.d.     using blowing temperature for reference

phase	Phase I	Phase II	Phase III	Phase VI	Phase V	Screw speed(Hz)
Temperature( °C)	125	140	145	145	140	22

corn starch based biodegradable additive