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Plastics are synthetically produced non-metallic compounds. It can be molded into various forms and hardened for commercial use. Plastic molding products can be seen everywhere. Examples are jars, protective caps, plastic tubes, grips, toys, bottles, cases, accessories, kitchen utensils and a lot more.
Even the keyboard and the mouse that you use are made through plastic molding. Even the plastic parts of the chair that you are sitting on are created this way.
The basic idea in plastic molding is inserting molten liquid plastic into a ready shaped mold, for example the mold of a bottle. It will be then allowed to cool, then the mold will be removed to reveal the plastic bottle.
Plastic molding can also custom-mold a wide variety of plastic products including: garden pots, cabinets, office trays and boxes, barriers, barricades and traffic signage and displays for product and marketing promotions.
If you are planning to go into plastic molding business, you should first know the different processes. Choose from a plastic molding process that fits your budget, your expertise, and your resources. Here are basic definitions of various methods of plastic molding.
The Plastic Molding Processes:
1. Injection Molding
In Injection Molding, melted plastic is forced into a mold cavity. Once cooled, the mold can be removed. This plastic molding process is commonly used in mass-production or prototyping of a product. Injection molding machines were made in the 1930Â’s. These can be used to mass produce toys, kitchen utensils, bottle caps, and cell phone stands to name a few.
2. Blow Molding
Blow molding is like injection molding except that hot liquid plastic pours out of a barrel vertically in a molten tube. The mold closes on it and forces it outward to conform to the inside shape of the mold. When it is cooled, the hollow part is formed. Examples of blow molding products are bottles, tubes and containers.
Equipments needed in setting-up a blow molding business are relatively higher than injection molding.
3. Compression Molding
In this type of plastic molding, a slug of hard plastic is pressed between two heated mold halves. Compression molding usually uses vertical presses instead of the horizontal presses used for injection and blow molding. The parts formed are then air-cooled. Prices of equipments used for compression molding are moderate.
4. Film Insert Molding
This plastic molding technique imbeds an image beneath the surface of a molded part. A material like film or fabric is inserted into a mold. Plastic is then injected.
5. Gas Assist Molding
Also called gas injection molding is used to create plastic parts with hollow interiors. Partial shot of plastic is then followed by high-pressure gas to fill the mold cavity with plastic.
6. Rotational Molding
Hollow molds packed with powdered plastic are secured to pipe-like spokes that extend from a central hub. The molds rotate on separate axes at once. The hub swings the whole mold to a closed furnace room causing the powder to melt and stick to the insides of the tools. As the molds turn slowly, the tools move into a cooling room. Here, sprayed water causes the plastic to harden into a hollow part. In this type of plastic molding, tooling costs are low and piece prices are high. Cycle time takes about 40-45 minutes.
7. Structural Foam Molding
Structural foam molding is a process of plastic molding usually used for parts that require thicker walls than standard injection molding. Inserting a small amount of nitrogen or chemical blow agent into the plastic material makes the walls thicker. Foaming happens as the melted plastic material enters the mold cavity. A thin plastic skin forms and solidifies in the mold wall. This type of plastic molding can be used with any thermoplastic that can be injection molded.
8. Thermoforming
In this plastic molding process, sheets of pre-extruded rigid plastics are horizontally heated and sucked down into hollow one-piece tools. When the hot plastic solidifies, its shape conforms to that of the mold.
Tooling costs are usually low and piece prices vary on the machinery.
Plastic molding is a very technical process. It needs experts in this type of manufacturing business for it to be competitive in the market. Therefore, a very scientific and systematic study should be first made before going into this endeavor.
For more great plastic molding info and advice check out: http://www.plastics-hq.com
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Cuisinart Supreme™ Commercial Quality Ice Cream Maker $299 Commercial-style compressor ice cream maker makes batch after batch – no waiting required No pre-chill or freezing bowls required Fully automatic 60-minute timer 1½-quart capacity Brushed stainless-steel housing with embossed logo Transparent lid with ingredient spout Instruction/recipe book Limited 3-year warranty |
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Cuisinart PerfectWeight™ Digital Kitchen Scale $49.95 These simple, efficient digital scales make it easy to control portions and bake with greater consistency. Easy-to-read digital screens offer complete accuracy and easy cleaning. Modern, sleek designs look great on the countertop and are easy to store. Includes dishwasher-safe, stainless-steel removable cover Durable, tempered-glass weighing platform Ultra-thin profile design provides easy storage Touchpad-style buttons for easy cleaning Weight capacity: 11 lbs./5 kg Batteries included |
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Cuisinart BalancePro™ Digital Kitchen Scale $49.95 These simple, efficient digital scales make it easy to control portions and bake with greater consistency. Easy-to-read digital screens offer complete accuracy and easy cleaning. Modern, sleek designs look great on the countertop and are easy to store. Weighting platform with 4-load weigh stations Includes dishwasher-safe, stainless-steel removable cover Ultra-thin profile design provides easy storage Touchpad-style buttons for easy cleaning Weight capacity: 11 lbs./5 kg Batteries included |
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Cuisinart WeighMate™ Digital Kitchen Scale $39.95 These simple, efficient digital scales make it easy to control portions and bake with greater consistency. The easy-to-read digital screens offer complete accuracy and easy cleaning. Modern, sleek designs look great on the countertop and are easy to store. Includes dishwasher safe stainless steel removable cover Large LCD readout Touchpad-style buttons for easy cleaning Weight capacity: 11 lbs/5 kg Batteries included |
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Cuisinart PrecisionChef™ Bowl Digital Kitchen Scale $49.95 Tempered glass weighing platform with removable stainless steel bowl or cover; can weigh directly on the platform or use additional bowl or cover for sanitary, safe food handling Stainless steel bowl features gradient marks for easy measuring and inverts as a protective cover for sleek countertop display Large LCD readout offer accurate readings in imperial or metric mode are easy to read at a glance with batteries included Add on Weight feature allows you to weigh multiple ingredients without starting from scratch Weight capacity of 5-kilogram or 11-pound |
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Cuisinart 1 Qt. Round Baker w/Lid - White $59.99 Commercial Quality Stoneware Heavy Weight, Virtually Non-Porous Will Not Absorb Moisture or Odors Serve Directly From Oven to Table Freezer Safe Microwave Oven Safe Dishwasher Safe Limited Lifetime Warranty |
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Cuisinart 9 1/2 Open Oval Baker - Blue $59.99 Commercial Quality Stoneware Heavy Weight, Virtually Non-Porous Will Not Absorb Moisture or Odors Serve Directly From Oven to Table Freezer Safe Microwave Oven Safe Dishwasher Safe Limited Lifetime Warranty |
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Cuisinart 14 Open Oval Baker - Blue $34.99 Commercial Quality Stoneware Heavy Weight, Virtually Non-Porous Will Not Absorb Moisture or Odors Serve Directly From Oven to Table Freezer Safe Microwave Oven Safe Dishwasher Safe Limited Lifetime Warranty |
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Cuisinart 10 1/4 Open Rectangular Baker - Black $19.99 Commercial Quality Stoneware Heavy Weight, Virtually Non-Porous Will Not Absorb Moisture or Odors Serve Directly From Oven to Table Freezer Safe Microwave Oven Safe Dishwasher Safe Limited Lifetime Warranty |
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Cuisinart 10 1/4 Open Rectangular Baker - White $19.99 Commercial Quality Stoneware Heavy Weight, Virtually Non-Porous Will Not Absorb Moisture or Odors Serve Directly From Oven to Table Freezer Safe Microwave Oven Safe Dishwasher Safe Limited Lifetime Warranty |
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Weston Non-Stick Single Hamburger Press List Price: $24.99 Sale Price: $13.99 Average Rating:   |
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Our single patty maker will allow you to create perfectly sized, pressed, and portioned burgers every time with your own ground meats. Making your burgers yourself also allows you to season them exactly to your taste... |
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RSVP Top-Dot Commercial Tamper, Red Sale Price: $13.95 Average Rating:  |
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Like little gems, RSVP Top-Dot Commercial Tampers feature translucent acrylic accents and stainless steel bodies, guaranteed to sparkle near the espresso machine. Choose your favorite color to complement your coffee making accessories... |
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MIU France 14" Stainless Steel Commercial Peforated Turner Black List Price: $11.99 Sale Price: $8.99 Average Rating:  |
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A chef's favorite tool, this commercial-weight 14" stainless-steel perforated turner features a beveled edge to slide under and flip omelettes, turn and serve scrambled eggs, hash browns, flip hamburgers or fried onions and drain excess grease for serving... |
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Scales 22 Lbs. X 1 Oz. Capacity |
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Scale 22 Lbs. X 1/2 Oz. (3 Kg X 10G) Capacity 10-1/2'''' X 7-1/8'''' X 10-5/8'''' Dial Type Top Loading Rotating Dial Sloped Face White Baked Enamel Finish Our Top Loading Portion Control Scales Give Concise Accurate Measurements... |
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i still prefer to use plain old clay garden pots instead of those that are made of plastic.**;
Ceramic pots or Clay Pots are still the best garden pots.–~