Product Introduction
The AT-MS-8060A pulp molding machine is a small-scale molder designed by Annimet for molding trials. Using straw pulp, bagasse, wood pulp, reed pulp, and waste paper pulp as raw materials, it shapes paper products of specific forms through specialized molds. The manufacturing process comprises pulping, vacuum suction forming, and drying and setting stages. Molded pulp products include food containers, tableware, and industrial cushion packaging. The equipment consists of three major systems: a slurry forming system, vacuum dewatering system, and wet hot-press forming system. It employs precise in-mold slurry injection, vacuum suction drainage, and a water-circulating vacuum pump. Both forming and hot-press molds are made of aluminum alloy, with upper and lower mold electric heating. It is suitable for research institutes, universities, and enterprises for prototyping, formula development, and small-batch production.

Key Features
Three-in-One System Integration: Integrates slurry forming, vacuum dewatering, and wet hot-press forming into a single machine, completing the full process from slurry to finished product and streamlining laboratory workflow.
Precise In-Mold Injection: The slurry supply system uses a hose pump with forward/reverse suction function and adjustable flow of 0.25 m³/h, achieving precise in-mold injection to avoid material waste and uneven formation.
Efficient Vacuum Dewatering: Water-circulating vacuum pump with 2.5 kW power, paired with a 0.5 m³ stainless steel gas-water separation tank and automatic drainage, ensuring stable and efficient vacuum suction.
Upper/Lower Mold Electric Heating: The wet hot-press system features upper and lower mold electric heating at 10 kW / 380 V, meeting the drying and setting requirements of molded pulp products.
Aluminum Alloy Molds: Both forming and hot-press molds are aluminum alloy with dimensions of 350 mm × 350 mm, offering light weight and good thermal conductivity for frequent mold changes in laboratory settings.
Multiple Safety Protections: Both the slurry forming system and hot-press system are equipped with infrared safety devices for safer operation.

Technical Specifications

FAQ
I. Forming and Mold Issues
1. Clogged mold holes, slow suction, insufficient forming
Mesh/micro holes clogged with fiber and impurities; pulp consistency too high; dirty circulating water. High-pressure water flush each shift; ultrasonic cleaning for stubborn clogs; reverse air blow; control pulp consistency at 0.8-1.2% (0.5-1.0% for fine products); enhance pre-filtration.
2. Uneven product thickness
Insufficient mold immersion depth; unreasonable hole ratio; unstable vacuum; short backwash time. Immersion depth ≥2× product height; adjust hole ratio (corners ~70%, edges ~60%, flat areas ~40%); stabilize vacuum at -0.07 to -0.09 MPa; extend backwash mixing time.
3. Demolding difficulty, sticking, detachment failure
Rough mold surface, no release coating, improper vacuum/air blow pressure, excessive slurry viscosity. Apply Teflon/ceramic coating and polish regularly; adjust demolding air pressure to 0.5-0.7 MPa with thorough vacuum release; adjust additives to reduce viscosity; check solenoid valves and air circuits.
4. Product wrinkling, deformation, warping
Uneven thickness, too rapid drying/large temperature differential, uneven hot-press pressure/temperature. Ensure uniform thickness; use staged heating for drying; hot-press at 160-220°C and 5-15 bar with uniform heating.
II. Product Quality Defects
5. Rough surface, fuzz, powder loss
Rough mold surface, poor fiber dispersion, insufficient hot-press temperature/pressure. Clean and polish molds; optimize beating for full fiber dispersion; increase temperature and pressure for dense surface compaction.
6. Edge burrs, flash
Worn/deformed mold edges, fibers too long, pulling during demolding. Grind and repair mold edges; control fiber length; adjust demolding angle and air blow.
7. Low strength, easy breakage
Short/broken fibers, too low consistency, insufficient vacuum dewatering, inadequate hot-press. Add appropriate long fibers; increase consistency; extend suction time; enhance hot-pressing for proper bonding.
8. High moisture content, incomplete drying, mold growth
Low drying temperature, short time, poor hot air circulation, poor drainage. Increase drying temperature to 120-180°C; extend drying time; improve air ducts; check condensate drainage.
III. Vacuum and Pneumatic System
9. Insufficient vacuum, weak suction
Worn vacuum pump, line leakage, clogged filter, insufficient water supply to water-ring pump. Service vacuum pump; find and fix leaks; clean/replace filter; ensure water ring pump flow and quality.
10. Unstable air pressure, demolding blow insufficient
Low compressor pressure, fluctuating tank pressure, faulty solenoid valve, clogged lines. Stabilize pressure at 0.6-0.8 MPa; service solenoid valve; clear lines.
IV. Hot-Press and Drying
11. Hot-press temperature slow or insufficient
Heating element/thermal oil fault, poor insulation, inaccurate temperature control. Check heating elements; repair insulation; calibrate temperature controller.
12. Product discoloration, yellowing, burnt edges after hot-press
Excessive temperature, localized overheating, too long dwell time. Lower temperature; adjust pressure distribution; shorten hot-press cycle.
V. Electrical and Mechanical
13. No startup response, program disorder
Phase loss/low voltage, PLC/touchscreen fault, limit switch failure. Check power supply; restart PLC; service limit switches and sensors.
14. Chain/guide rail sticking, abnormal noise
Insufficient lubrication, foreign object jamming, wear/deformation. Clean and lubricate; adjust tension; replace worn parts.

After-Sales Service
Thank you for your inquiry. Shandong  Annimet  Instrument Co., Ltd., established in 2007, has dedicated nearly two decades to the R&D, production, and sales of quality testing instruments. We regard product quality as the lifeblood of our enterprise and pursue excellence in every product developed. Looking back at the history of scientific and technological development, we firmly believe that every product is born from technological advancement, every technology derives from material exploration, every material discovery depends on process improvement, and every process improvement relies on experimental support. Humanity never lacks ideas; we need the means to realize them.  Annimet Instrument will consistently provide the tools for your ideas and creativity. Should you have any questions, please feel free to contact our customer service team—we are fully committed to providing excellent pre-sales, in-sales, and after-sales service.