The advantages of the extrusion blow molding

1),The cost of the extrusion blow molding machine is cheaper than that of injection molding machine, about one third of the injection blow molding machine.

2)On blowing molding, the preform is formed under low pressure through the extrusion equipment heat, in this circumstance, the residual stress of the products is small. With its good performance in tensile, impact, bending and other variety of environments, It have the good function.

3)In the injection blow molding, the plastic melt at high pressure (15-140Mpa) through the mold runner and gate, which will lead to uneven stress distribution.

4)The moleculars of blowing mold grade plastics(e.g,PE)are more than that of injection mold.
Such blow molding products have a high impact toughness and high resistance to environmental stress cracking performance, which is very favorable for the large-capacity production of plastic bottles.

5)The wall thickness of the blow molding products can be very thin while the injection molding products cannot be so thin as blowing mold process.

6)Blow molding process can shape complex and irregular products, but the injection molding process has to produce two or more pieces, and then stick it by the glue or bond it or using ultrasonic welding.

New foam pump bottles

New foam pump bottles in 50ml,80ml,100ml,120ml,150ml

Ink Spray painting of plastic bottle surface

Ink Spray painting
The most common used method of spraying the surface of plastic products can be divided into:
A, Ordinary coloring,Such kind of painting mostly spray by hand. it does not have strong abrasion, and easy to swap.
B,PU Varnish oil: Spray on the surface of the plastic product after spraying the base oil.In this way, it can achieve the effect of anti rubbing and gloss finish. General home products or daily necessities are treated by PU process.
C, UN varnish oil: Spray a layer of UV gloss oil after spraying the base ink. Both the gloss and rubbing can achieve a good result. General phone mold products and communications products die more with such an approach.
By Canvard Packaging Factory

Plastic mold surface treatment technology-Text printing process

There are several printing methods to print text or pattern on the surface of plastic products.
1,Silkscreen printing
This method is the most common one, it is generally suitable for flat or curvature of small print .
2,curved surface printing
Firstly put the ink into the gravure that curved with text and pattern, then copy the text or images onto a curved surface, the surface will reuse the text or pattern and transferred to the surface of a molded product, and finally curing the ink by heat treatment or ultraviolet light irradiation method.
Curved surface printing process:
A,Degreasing of the mould.
B,Surface treatment
C,Printing
D,Curing ink

Printing process
A,put the ink into the gravure
B,scrape excess ink
C,extrude the surface to get the ink
D,Transfer the ink to the molded products
E,clean the surface and layout

Transfer printing
Advantages:It can be administered several colors in a single operation.
Disadvantages:Low productivity and cannot get a strong opacity impression.

Hotstamping:
Under controlled temperature and pressure, using the color foils and heat mould that engraved with patterns or font.
   

From CanvardPackaging

How to make good use of plastic packaging

The recovery rate of cosmetic plastic packaging is very low. So it has become one of the sources of pollution.

In recent years, although the increasingly awareness of garbage classification, but the complex material of cosmetic plastic bottle brings many confusion at the time of separation and recovery process.It is a great need to improve the plastic bottle recycling.

There must be a certain rules between plastic packaging and the bottle appearance requirement.It should be try best to make bottle simplify,so as to be recognized by customers, in order to recycling easier.On the other hand, the suppliers should establish a sound recycling channels.If we can achieve and effective recycling and reuse it, it will be a great resources.

Producing spray bottle needs key techniques

Nowadays, more and more fields are using mist spray bottles. Such as cosmetics, pharmas and chemicals industries.So many manufacturers begins to produce and sell the plastic spray bottles.

The nozzle depends on the quality of the spray bottle.And the performance and quality of the spray bottle rely on the use life and experience.But the manufacturers who manufacturing the spray nozzle needs professional technique.

Currently, the nozzle that used in the market are generally produced by professional manufacturers that located in Zhejiang province. Obviously, for a new plastic bottle manufacturer,they need to purchase the spray nozzle from the professional one.If the cosmetic packaging supplier wants to involve into the spray bottle fields, they need to establish production line fo nozzle spray.

Therefore, for those manufacturers who producing spray bottle, they need to know the importance of the nozzle spray and get its key technique.

Airless spray bottle, spray plastic bottle

Product:airless spray bottle, It is airless bottle, but for liquir or toner,not lotion.Spray plastic bottle but without the diptube.
Volume;15ml,30ml,50ml,100ml
Material:ABS
Color: same as picture shows.
Price: pls contact us.