The document summarizes the toothbrush manufacturing process. It involves injection moulding to form the plastic handles, filling machines to insert nylon bristles into the handles using metal staples, and trimming machines to cut the bristles to the proper length. Finally, the finished toothbrushes are packed and shipped. The document also provides background information on toothbrush history, materials used such as polypropylene and nylon, and a local Malaysian toothbrush manufacturing company.

1. MANUFACTURING PROCESS
TOOTHBRUSH
The National University of Malaysia
Faculty of Engineering and Built Environment
Department of Mechanical & Manufacturing Engineering
Group Member:
Muhamad Fikri Fitri Bin Musa Muhamad
Wan Mohamad Asyraf Bin Wan Ahmad
Cricton Lee Shuan Chung
Ahmad Khairi Hakiim Bin Ahmad Kamal
Nur Alia Syafiqah Binti Zulkifli

2. GROUP MEMBER PARTS
Nur Alia Syafiqah Binti Zulkifli Greetings, history and interesting facts
Cricton Lee Shuan Chung Materials and its properties
Muhamad Fikri Fitri Bin Musa Muhamad Manufacturing processes
Wan Mohamad Asyraf Bin Wan Ahmad Application of the products
Ahmad Khairi Hakiim Bin Ahmad Kamal Local company and ending

3. Material
Handles - Polypropylene
• is a tough, rigid and crystalline thermoplastic produced from
propene (or propylene) monomer.
• It is a linear hydrocarbon resin.
• Polypropylene is among the cheapest plastics
available today.
Common properties of Polypropylene
• Tough
• Good chemical, heat and fatigue
resistance
• Translucent
• Semi-rigid

4. Bristle –Nylon
COMMON PROPERTIES
Widely used in :- automotive & transportation, electrical & electronics,
consumer goods, packaging and many more.
ABRASION
RESISTANCE
EASY TO
WASH
HIGH
RESILIENCE
STRONG
ELASTIC
EXCELLENT
TOUGHNESS
LIGHTWEIGHT
SOFT
SMOOTH

5. HISTORY OF TOOTHBRUSH
3000 -
3500 B.C
• Babylonians chew on the end of twigs until they become soft like the bristles on a
toothbrush
1400
• A toothbrush made of stiff pig hairs attached to bamboo or bone is invented in China
1780
• The toothbrush is mass-produced in England
• The toothbrush was made with a small animal bone and bristles inserted through drilled holes
1938
• Nylon replaces animal hair on toothbrushes. People prefer nylon because is softer and more hygienic
1939 • Switzerland invents the first electric toothbrush
1960 -
1961
• The electric toothbrush (called the Broxodent) is introduced in the United States
• General electric is the first to market a toothbrush that is rechargeable and cordless.

6. INTERESTING TOOTHBRUSH FACTS
“Chew stick”
Toothbrush in 1498
Nylon toothbrush
• The first mass-produced toothbrush was made by
William Addis of Clerkenwald, England around
1780.
• The first American to patent a toothbrush was
H.N Wadsworth on Nov 7, 1857.
• Mass production of toothbrushes began in
America around 1885.
• One of the first electric toothbrushes to hit the
American market was in 1960 and was marketed
by the Squibb company under the name
Broxodent.
Electric toothbrush

7. MANUFACTURING PROCESS
INJECTION MOULDING FILLING MACHINE
TRIMMING THE BRISTLE
PACKING THE TOOTHBRUSH

8. Injection
Moulding
1. Plastic put inside injection molding machine and be heated.
2. Rotating screw force liquid plastic into handle mods
3. Form entire handles with holes.
4. Clamp securely mods with pressure while wits plastic cold and then removed.
5. Small pins push the handle out of the mods.
Filling machine 1. Bristles (made from nylon) position into core(holes) automatically.
2. Bristles stapled in into the holes by tiny metal staples.
Trimming the
Bristles
1. The toothbrush passes through trimming machine which slices the bristles into accurate dimension according to
specific design.
Packing the
toothbrush
1. Toothbrush packed into a cardboard or plastic container according to it specification.
2. From that the package been attached by an informative information likes bristles, hardness, and
recommendation usage.
3. The toothbrush that gets approvement from American Dental Association, it will be stamped by it seal of
acceptance on the package.
4. It is then pack in a large bundle and been ship to the distributors.

9. Application of product
For oral health, toothbrush is the first line of defense.
Biology-Study of living organism
• Bacteria cause tooth decay which lead to illness(plaque)
• Plaque is sticky film that build up on teeth from million of oral bacteria
• They convert sugars and carbohydrate in food into acid. These acids erode the tooth enamel,lead to tooth
decay
How Toothbrush Help
• When brush correctly, the plaque and bacteria build up are
eliminated, prevent gum disease and tooth decay
• Promote stronger immune system and healthier lifestyle as well
as build confidence

10. Function of
toothbrush
Design
▪ Texture and design not mainly made to attract consumer
but rather created to assist user toward simpler and
more effective plaque removal
Main part of toothbrush :-
▪ Head : working end that holds bristles or filament
▪ Handle : the part grasped by hand during brushing
▪ Shank : section that connect head with handle
▪ Tufts : clusters of brisltes secured into head

11. LOCAL COMPANY – FULIJAYA
• Fulijaya Manufacturing Sdn. Bhd. has been
established since 1982.
• Specialize in manufacturing a comprehensive range
of oral care products such as toothbrush,
toothpaste, mouthwash, breath spray and all
related oral care accessories for global supply.
• Located in Kulim, Kedah.
• Address - Plot 7110, No.H.S.(M) 745, off, Lebuhraya
Butterworth - Kulim, 09000 Kulim, Kedah
• Contact info –
• Tel: +604-484 6008; +604-484 7005; +604-484 1326
• Fax: +604-484 7302
• Email: sales@fulijaya.com

12. FULIJAYA’S PRODUCTS
Fulijaya’s products include
• Toothbrush
• Toothpaste
• Mouthwash
• Breath spray
• All related oral care accessories