What is the effect of excessively high injection pressure on the size of molded products?
High pressure compacts the plastic melt tightly, increasing density and expanding the product dimensions.
High pressure usually results in a denser material, leading to an increase in overall size.
Excessive pressure generally causes dimensional changes due to increased density and internal stress.
While internal stress can cause unpredictability, the primary effect is consistent expansion due to high density.
Excessively high injection pressure causes the plastic melt to fill the mold cavity more densely, increasing the product's size by 1% – 2% due to over-compaction. This can result in dimensional inaccuracies, affecting assembly with other parts.
How does low injection pressure affect the dimensional accuracy of molded products?
Low pressure can prevent the mold cavity from being fully filled, resulting in undersized products.
Insufficient pressure typically results in dimensional inconsistencies and defects.
Lower pressure means less material filling the mold, not more.
Pressure directly influences how well the mold cavity is filled, thus affecting dimensions.
Low injection pressure can lead to incomplete filling of the mold cavity, resulting in smaller product dimensions. It also causes non-uniform cooling and shrinkage, which affects dimensional accuracy by introducing depressions or deformations.
What is a potential effect of excessively high injection pressure on a plastic product's dimensions?
High pressure compacts the melt tightly, increasing density and expanding dimensions.
High pressure typically results in over-compaction, not shrinkage.
Excessive pressure generally causes dimensional changes, not stability.
High pressure usually increases density, not reduces weight.
Excessively high injection pressure increases the density of the plastic melt, causing the product to expand in size, thus making it larger than the intended dimensions. This can lead to fitting issues with other components.
How does too low injection pressure affect the uniformity of a molded plastic product?
Low pressure causes unstable flow, not uniformity.
Low pressure typically leads to incomplete filling and inconsistencies.
Unstable flow due to low pressure affects cooling and shrinkage uniformly.
Low pressure often fails to fill thick areas properly.
Insufficient injection pressure leads to unstable flow and uneven cooling, causing depressions and dimensional differences across the product. This results in non-uniform dimensions, affecting the quality and functionality of the molded item.
What is a potential effect of too low injection pressure on the dimensional accuracy of injection molded products?
Insufficient pressure results in incomplete mold filling, leading to undersized products.
Increased size is more associated with high injection pressure.
Perfect accuracy is unlikely without proper pressure control.
Surface finish issues can arise from pressure variations.
Low injection pressure can lead to smaller product dimensions because the melt may not fill the entire mold cavity. This results in undersized products, particularly impacting precision parts. Contrary to this, high pressure could lead to larger dimensions. Proper pressure control is crucial for maintaining dimensional accuracy.
What is a potential effect of excessive injection pressure on the dimensional accuracy of molded plastic products?
High pressure compacts the melt tightly, expanding product dimensions.
This typically happens with insufficient pressure, not excessive.
Excessive pressure usually causes uneven stress, not uniformity.
High pressure often leads to instability due to internal stresses.
Excessive injection pressure increases the density of the plastic melt, causing the product to expand and become larger than designed. This can lead to issues with assembly and overall dimensional accuracy. In contrast, insufficient pressure results in smaller dimensions due to incomplete mold filling.
What happens to a plastic product's dimensions when the injection pressure is too high?
High pressure fills the mold cavity tightly, affecting size.
High pressure causes the plastic to expand beyond design limits.
High pressure changes the density and size of the product.
Injection molding involves solidifying, not dissolving.
When injection pressure is too high, the plastic melt is packed tightly into the mold cavity, causing the product to expand beyond its design size. This results in larger dimensions due to increased density from over-compaction, which can lead to assembly issues.
What is a potential consequence of using too low injection pressure during molding?
Low pressure results in incomplete filling of the mold cavity.
Insufficient pressure leads to incomplete filling and smaller sizes.
Pressure affects size, not transparency.
Pressure impacts filling, not melting.
Too low injection pressure results in the melt not fully filling the mold cavity, leading to products with smaller dimensions. This occurs because the material doesn't reach all areas needed for proper formation, affecting the final size and potentially its performance.
How does high injection pressure affect the internal stresses of a molded product?
High pressure generally increases internal stresses within the product.
High pressure can create uneven stresses leading to deformation.
Excessive pressure can lead to warping and instability post-demolding.
Molding inherently creates stress, especially with high pressures.
Excessive injection pressure induces large internal stresses within a product. Upon demolding, these stresses may release unevenly, causing deformations such as warping, which negatively impacts dimensional stability and quality.
What is a potential consequence of high injection pressure during the molding process?
High pressure compacts the melt tightly, expanding product dimensions.
Consider how compacting the melt affects size.
Think about how pressure might change dimensions.
The mold cavity is where dimensional changes occur.
High injection pressure causes the plastic melt to fill the mold cavity more tightly, increasing density and resulting in larger product dimensions. It does not cause the product to become smaller, maintain its original design size, or leave the mold cavity unaffected.
What can happen if the injection pressure is too low during the molding process?
Low pressure might not fully fill the mold cavity.
Think about how lack of pressure affects filling.
Consider how pressure impacts surface quality.
Low pressure usually doesn't increase size.
Low injection pressure can lead to incomplete filling of the mold cavity, resulting in smaller product dimensions. It does not ensure unchanged dimensions or always create smooth surfaces, nor does it make dimensions larger than intended.