The plastic bowls making injection molding machine is an injection molding machine that melts plastic and injects it into a bowl mold to produce durable bowls for daily use.

 

 

A plastic bowl injection molding machine has four core systems. The injection unit melts the plastic and pushes it into the mold. The clamping unit holds the mold shut during injection. The hydraulic unit provides power for all moving parts. The electric and control system manages all actions and parameters . These four units work together to produce consistent, high-quality bowls.

With different bowl molds, the plastic bowl making machine can produce many different types of plastic bowls. For example, disposable bowls, microwave-safe bowls, pet food bowls, salad bowls, mixing bowls, noodle bowls, and children’s bowls .

Plastic bowls are medium-sized products with simple circular shapes. A standard plastic bowl weighs 15g to 100g. This requires the plastic bowl injection molding machine with clamping force from 120 to 300 tons . The machine also needs a large platen to accommodate multi-cavity molds. Special screw designs ensure even melting of the plastic volume. Haichen knows without these machine features, the bowl may have sink marks or flow lines.

Plastic Bowls Injection Molding Machine Components

• Clamping unit

• Injection unit

• Hydraulic unit

• Electric and control system

Clamping unit

The clamping unit holds the mold shut during injection. This unit must provide enough force to resist the high pressure of the injected plastic. For bowl production, typical clamping force ranges from 120 to 300 tons . Insufficient force causes the mold to open slightly. This creates flash on the bowl rim. The clamping unit also opens the mold after the cooling stage. An ejection mechanism then pushes the finished bowl out. Haichen machines use a five-point toggle clamping system for stable force distribution.

Injection unit

The injection unit melts the plastic and injects it into the mold. A hopper feeds plastic pellets into a heated barrel. The barrel has heating bands that raise the temperature to 200-300°C for PP and PC materials . A screw rotates inside the barrel, pushing the plastic forward. The screw also creates friction that adds more heat. Once enough melted plastic collects, the screw moves forward like a plunger. It pushes the melt through a nozzle into the mold. The injection unit also controls injection speed and pressure.

Hydraulic unit

The hydraulic unit provides power for the clamping and injection systems. It uses a hydraulic pump to generate high-pressure oil. This oil flows through valves to move the clamping cylinder and the injection screw. The hydraulic system must deliver consistent pressure for stable production . For bowl making machines, the hydraulic unit requires a moderate pump. Haichen uses servo-driven hydraulic systems. These systems reduce energy consumption by 40-80% compared to standard fixed-pump systems .

Electric and control system

The control system manages all machine functions. It uses a programmable logic controller (PLC) to monitor temperature, pressure, timing, and position . Operators adjust parameters through a touch screen interface. The electrical system powers the heating bands, motors, and sensors. It also includes safety circuits that stop the machine when guards open. A good control system allows operators to save parameter sets for different bowl designs. This makes switching between products quick and easy.

HCK230 PLASTIC INJECTION MOLDING MACHINE
INJECTION UNIT
ITEM	UNIT	A	B	C
INJECTION UNIT
Screw diameter	mm	45	50	55
Screw L/D ratio	L/D	24.4	22.0	20.0
Shot volume(theoretical)	cm3	398	491	594
Injiection weight(ps)	g	362	447	541
	oz	12.8	15.8	19.1
Injection pressure	Bar	2299	1862	1539
Injection rate	cm3/s	192	237	286
Plasticizing capacity	g/s	23	27	33
Screw speed （Max.)	r/min	200
CLAMPING UNIT
Clamping force	Kn	2300
Space between tie bars(W×H)	mm	570×520
Platens size	mm	820×770
Opening stroke	mm	520
Min.Mold height	mm	220
Max.Mold height	mm	570
Distance between platens(daylight)	mm	1090
Ejector stroke	mm	150
Ejector force	Kn	80
OTHERS
Systerm pressure	Bar	175
Pump motor	Kw	30
Heating power	Kw	16.4
Oiltank cubage	L	200
Machine dimension(L×W×H)	m	5.8×1.4×1.9
Machine weight	t	7.3

 

Advantages of Plastic Bowl Making Injection Molding Machine

• High production efficiency

• Consistent product quality

• Energy saving operation

• Design flexibility

High production efficiency

A plastic bowl making machine produces a complete bowl in one cycle. Cycle times range from 10 to 25 seconds per bowl with multi-cavity molds. One machine can produce 4,000 to 10,000 bowls per day. The process requires no secondary assembly for single-piece bowls. Automation reduces labor costs. Robots can remove finished bowls and place them on conveyors. This creates a continuous production flow. We know and will instruct you the plastic bowls injection molding cost reduction strategies.

Consistent product quality

The machine produces identical bowls cycle after cycle. The closed-loop control system maintains stable temperature and pressure . This prevents defects like short shots or warping. Each bowl meets the same strength and appearance standards. The machine also monitors itself for problems. It alerts operators when parameters drift outside acceptable ranges. This reduces scrap rates and improves overall yield.

Energy saving operation

Modern plastic bowl making machines use servo motor technology . The servo system only consumes power when needed. It stops the motor during cooling and other non-active periods. A standard fixed pump runs continuously, wasting energy. Servo machines save 40-80% on electricity. They also operate with less noise. This makes them suitable for clean, quiet workshop environments.

Design flexibility

One machine can produce different bowl models by changing the mold. The control system stores multiple parameter sets. Operators can switch between bowl designs quickly. The machine also processes various plastic materials. Common materials include PP, PC, and HDPE. Each material has different strength and appearance properties. This flexibility allows manufacturers to respond to market demands without buying new equipment.

Applications of Plastic Bowls Injection Molding Machine

• Disposable bowls

• Microwave-safe bowls

• Premium transparent bowls

• Pet feeding bowls

Disposable Plastic bowls

Disposable bowls are the most common product from these machines. These bowls are lightweight and cost-effective. Typical weight ranges from 15g to 30g. Disposable bowls are popular for outdoor events, takeout services, and fast food restaurants . The machine produces them in high volume with multi-cavity molds, making it very efficient.

Microwave-safe Plastic bowls

Microwave-safe PP bowls represent a significant product category. These bowls can be heated directly in microwave ovens. The mold for microwave bowls uses food-grade PP material. The injection unit must maintain precise temperature control to prevent degradation. These bowls usually weigh 25g to 50g and are popular for home use and meal prep.

Premium transparent Plastic bowls

Premium PC bowls offer crystal-clear appearance and high impact strength. These bowls suit high-end tableware and gift packaging. PC requires higher injection pressure and careful temperature control. The machine must handle the higher viscosity of PC material. Premium bowls typically weigh 30g to 100g and demand excellent surface finish.

Pet feeding plastic bowls

Pet feeding bowls are a growing application for these machines . These bowls come in various sizes for dogs and cats. The material must be food-safe and BPA-free. The mold design includes non-slip features on the bottom. Many pet bowls have unique pattern designs and colorful appearances . Production volumes are moderate with cycle times of 15-25 seconds per part.

Haichen Plastic Bowls Injection Molding Making Solutions

• Machine models for bowls

• Real production examples

• Technical support services

Machine models for bowls

Why choose Haichen for plastic bowl injection molding? Haichen Machinery offers HCK series injection molding machines for household bowl production. Our machines provide clamping force from 120 to 450 tons. For standard disposable bowls, we recommend HCK160 to HCK250 models. For PC premium bowls, we recommend HCK280 to HCK350 models with higher injection pressure. These machines feature large platens to accommodate multi-cavity bowl molds. All Haichen bowl making machines use servo-driven hydraulic systems for energy efficiency. Moreover, we know how to fix common injection molding machine problems in plastic bowl production.

Production examples

The plastic bowl injection molding manufacturer uses Haichen HCK200 to produce disposable PP bowls with a 4-cavity mold. Each bowl weighs 25g. Cycle time is 12 seconds per batch. This produces about 10,000 bowls per day. Another customer produces microwave-safe PP bowls on Haichen HCK280 with a 6-cavity mold. Each bowl weighs 35g. Cycle time is 18 seconds. A pet product manufacturer uses Haichen HCK250 to produce colorful pet bowls. Each bowl weighs 50g. Cycle time is 20 seconds. Both customers report consistent quality and low defect rates. We can make solution according to different production capacities of plastic bowl injection molding machines.

Technical support services

Haichen provides complete plastic bowls injection molding production line planning. We analyze your bowl design and recommend the right machine based on part weight, cavity count, and material type. Our team helps you select the correct screw and barrel configuration for your material. We also provide mold trial services before shipping. This ensures the machine works with your existing molds. Haichen has over ten years of experience in plastic bowl manufacturing. Contact us to discuss your bowl production needs. 

Haichen can professionally select the suitable plastic bowl injection molding machine for production and supply injection molding production line for plastic bowls. Welcome Contact us for futher discussing.