PVC foam board is widely used in daily life, PVC foam board manufacturers in the process of processing and production often have a variety of problems, the following we discuss and analyze the common problems of PVC foam board.
PVC foam board outside the slip too much
The precipitation will become serious, manifested in the structure of the mold and the surface of the plate outside the slip of the precipitation will also be manifested in some individual phenomenon on the surface of the plate irregular movement back and forth.
PVC foam board outer slip is not enough
Extruder 5 temperature is not easy to control, easy to heat up, resulting in high temperature of the merging core, the middle of the board out of large bubbles, string bubbles, yellowing and other problems, the surface of the board is not smooth.
Insufficient inner slip of PVC foam board
The plate surface is difficult to control the thickness, manifested as the plate is thick in the middle and thin on both sides; too much internal slip, easy to appear the phenomenon of high temperature of the merging core.
PVC foam board surface yellowing
Reason analysis: barrel, mold temperature is high, lubricant does not match well, the thickness of the board is too thick, yellow issued hot core layer slow heat dissipation, and the stability of the stabilizer also has a relationship.
Solution: Properly reduce the mold temperature, choose efficient lubricant and adjust the lubrication with the thick board to reduce the amount of yellow hair to increase the amount of white hair, choose better thermal stability of the stabilizer.
PVC foam board surface bending
Cause analysis: uneven material flow or cooling is not in place, the factors that cause uneven material flow are generally large traction fluctuations or unbalanced internal and external lubrication in the formula.
Solution: Check whether the cooling water circuit is smooth, so that the board surface is evenly cooled in place, check the traction machine to make its traction speed stable; adjust the amount of lubricant to make the lubrication balance, the current is stable.
Cross-sectional bubble holes or bubble layering
Cause analysis: can be attributed to a point, that is, the melt strength is not enough. Mainly because of excessive foaming agent or foam regulator is not enough, the ratio of the two is not coordinated, or foam regulator quality problems; poor plasticization, low processing temperature, or excessive lubrication.
Solution: Adjust the amount of foam regulator and foam agent, choose the foaming agent with higher melt strength and viscosity; appropriately reduce the amount of PE wax as an external lubricant, and appropriately increase the temperature of the screw barrel to make the plasticization better.
Uneven thickness of PVC foam board surface
Reason analysis: Uneven material discharge
Solution: can adjust the opening degree of mold lip, if the flow rate is too big, can adjust the flow blocking bar, formula adjustment, generally, the inner lubrication is thicker in the middle, the outer lubrication is faster on both sides. Adjust the amount of internal and external lubricant according to the actual situation.
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PVC foam sheet is more versatile and has better material properties. PVC foam sheet is harder and heavier than kt sheet. Due to the high density of PVC, the weight is 3-4 times heavier than the KT sheet.
1. PVC material is hard, suitable for machine engraving, KT board material is brittle can not afford machine engraving, but suitable for manual engraving.
2. PVC is a plastic material, while KT board is a foam material.
PVC board and KT board surface can be used to cover the picture, PVC board for outdoor, KT board for indoor, PVC board can be used for a long time, KT board is short-term use.
4. PVC has strong scratch resistance, kt board is more fragile and easy to produce scratches.
5. PVC board is hard and not easy to cut by hand, KT board is less hard and can be cut by hand.
7. PVC is strong in durability and suitable for long-term use, KT board is weak in durability and suitable for short and medium-term use. (Within 1-2 years).
8. PVC board is suitable for outdoor use, PVC board is suitable for indoor use.
9. PVC price is 3-4 times the price of kt board (also weighs 3-4 times). Better PVC in 5-10 times more.
10. KT board is not sun-proof, not waterproof, encountering sun and rain surface will blister, deformation, and thus affect the surface quality of the picture. PVC board is sun-proof, waterproof, encountering sun and rain will not be deformed.
11. PVC also has the characteristics of fire and heat resistance, can replace wood, as a fireproof material.
12. KT board is used for a variety of shaped labels, hand-raised signs, supermarket personalized inserts, mostly for short-term display.
13. PVC is more used for laser engraved letters and various cultural walls, backdrop shapes, mostly for long-term use.
14. PVC is heavy and needs to be reinforced and installed, KT is light and easy to install.
Different application scope
KT board is mainly used for indoor short-term advertising display board, or in the above stickers or say framed printed PP paper. KT board is mainly used in the indoor signage industry, DIY production (especially model production), and cosplay props.
PVC is mainly used for outdoor advertising signs, construction site signage, etc. Indoor can also be used, such as the workshop plant and another harsh environment of the logo, placards.
PVC is more often used for laser engraved words and various cultural walls and backdrop shapes, mostly for long-term use.
KT board is used for various shaped labels, hand raised signs, supermarket personality inserts, mostly for short-term display use.
We are a PVC foam sheet supplier, please feel free to contact us if you need them.
The PVC foam board, otherwise called Chevron board or Andy board is extensively utilized for both interior and also outside applications. It consists of the chemical structure, Poly Vinyl Chloride, which is made use of in furniture, structure, and advertising and marketing sectors.
Functions of PVC foam board
These PVC foam boards are fire immune. It can resist acid, moth, warmth, resonances, noise and light
It is water resistant
It supports remarkable high quality wood processing
This is a suitable replacement for the wood, light weight aluminum and also various other kinds of compounds
It features smooth plate surface area that is tough with the minimal scraping as well as hence becomes ideal for closets and furniture
It likewise includes high thermal and acoustic insulation homes
It is self-extinguishing and flame retardant
It features light structure. It is mobile and also can be transported easily to any place
Any kind of usual carpentry tools can be used on this product for working
This PVC foam board can also be toenailed, pierced, pasted and also saw or involved in any other processing
Application of PVC Foam Board
The PVC foam board has a vast array of applications.
Vehicle, bus, train ceilings
Utilized in decorative, interior, and also structure wall surface panels
Used in business, household, public as well as office complex
Made use of extensively in computer system text, screen printing, and advertising and marketing
Used in labeling, show panel, and also signs sector
Used in chemical rust engineering cooking areas
Besides these numerous applications of PVC foam sheet also has exceptional attributes, which will certainly enhance its functionality as well as applications.
Why you need PVC foam board?
Constructed from lightweight and foamed PVC, this PVC foam board is wetness as well as corrosion resistant. It is absolutely lightweight. It is also immune to chemicals. The overall density of the material will vary from 6 mm to 45mm. It is feasible to engrave, emboss, paint, print, laminate as well as mill the surface of the foam board according to your needs. One of one of the most highlighting functions of this foam board is that they will certainly not degeneration with time and the shade continues to be in the same new look for a long time without fading.
We are a PVC Foam Board supplier, please do not hesitate to contact us if you need them.