Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

Silver streaks on the preform surface

A

In summary, the causes of the "Silver streaks on the preform surface" problem can be attributed to the combined action of multiple factors such as Raw material moisture content exceeding the standard, Melt temperature too high causing decomposition. Solving this problem requires starting from asp...

Material Drying Silver streaks on the preform surface stretch '2079851475616104457 temperature control raw material management surface quality

Q

Pitting on the bottle body surface

A

In summary, the causes of the "Pitting on the bottle body surface" problem can be attributed to the combined action of multiple factors such as Water vapor or oil stains in the mold cavity, Compressed air not clean. Solving this problem requires starting from aspects such as Clean the mold cavity...

Blow Molding Pitting on the bottle body surface stretch '2079851475616104457 mold design surface quality

Q

Preform gate stringing

A

In summary, the causes of the "Preform gate stringing" problem can be attributed to the combined action of multiple factors such as Hot runner gate temperature too high, Holding pressure time too long. Solving this problem requires starting from aspects such as Reduce the gate temperature, Shorte...

Blow Molding Preform gate stringing stretch '2079851475616104457 temperature control

Q

Poor mold venting

A

In summary, the causes of the "Poor mold venting" problem can be attributed to the combined action of multiple factors such as Vent holes or vent grooves clogged, Insufficient venting structure design. Solving this problem requires starting from aspects such as Clean the vent holes, Add vent groo...

Blow Molding Poor mold venting stretch '2079851475616104457 mold design venting design

Q

Stretch rod scratching the bottle inner wall

A

In summary, the causes of the "Stretch rod scratching the bottle inner wall" problem can be attributed to the combined action of multiple factors such as Stretch rod surface rough or damaged, Insufficient stretch rod lubrication. Solving this problem requires starting from aspects such as Polish ...

Blow Molding Stretch rod scratching the bottle inner wall stretch '2079851475616104457 stretch ratio surface quality

Q

Preform moisture absorption during storage (re-drying required)

A

In summary, the causes of the "Preform moisture absorption during storage (re-drying required)" problem can be attributed to the combined action of multiple factors such as High humidity in the PET preform storage environment, Storage time too long. Solving this problem requires starting from asp...

Material Drying Preform moisture absorption during storage (re-drying required) stretch '2079851475616104457 drying treatment

Q

Preform contamination (foreign matter)

A

In summary, the causes of the "Preform contamination (foreign matter)" problem can be attributed to the combined action of multiple factors such as Unclean injection environment, Impurities in the raw material. Solving this problem requires starting from aspects such as Improve the cleanliness of...

Material Drying Preform contamination (foreign matter) stretch '2079851475616104457 mold design raw material management

Q

Bottle body drop breakage

A

In summary, the causes of the "Bottle body drop breakage" problem can be attributed to the combined action of multiple factors such as Thin bottle bottom wall, Low strength at the preform weld line. Solving this problem requires starting from aspects such as Increase the bottle bottom wall thickn...

Material Drying Bottle body drop breakage stretch '2079851475616104457 resin characteristics bottle bottom forming welding quality

Q

Bottle body perpendicularity out of tolerance

A

In summary, the causes of the "Bottle body perpendicularity out of tolerance" problem can be attributed to the combined action of multiple factors such as Preform eccentricity, Stretch rod and mold not concentric. Solving this problem requires starting from aspects such as Correct the preform con...

Blow Molding Bottle body perpendicularity out of tolerance stretch '2079851475616104457 cooling process mold design stretch ratio

Q

Collapse of heat-resistant bottle after hot filling

A

In summary, the causes of the "Collapse of heat-resistant bottle after hot filling" problem can be attributed to the combined action of multiple factors such as The bottle not sufficiently heat-set, Large residual stress. Solving this problem requires starting from aspects such as Add a heat-sett...

Blow Molding Collapse of heat-resistant bottle after hot filling stretch '2079851475616104457 stress control

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