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3. Types of Motors

34

35

・

Tanks in the aquarium    

Tanks in the aquarium are mostly made by plastic.  Acrylic that has been pasted many is

used for tanks.  Acrylic is lighter than glass, not easy to break, and same transparency as

glass.

・

Plastic bottle

As you know well, drink bottles are made by plastic (not all of them.) Plastic bottle is made

Polyethylene Terephathalate. Do you know that cutting finely Polyethylene Terephathalate is

same as Polyester, which is used for clothe.

・

CD (compact disk)

When you listen music, you listen by using CD & CD player.  Do you know CD is made by

plastic.  "Polycarbonate" is the plastic that is used for CD.  Polycarbonate is used for things

need strong power, and to be transparet. 

Polycarbonate is such a strong plastic that is not easy to be elastic, and change shape by

temperature. Moreover, there is numerous plastic products such as telephone,  bath tab,

washbasin, bucket, tape, contact lens, personal computer, and etc.  Each products use

plastic's characteristic and nature.

Recently, the concern to ecology increases and recycling of plastic parts attracts attention.

By using existing shape to recycle or gather same materials and melt them by heat and

chemicals.  These could be other products later.  Recently, package of the products show

material of plastic to distinguish each material easily.  Recently, a gift box has a printing of

plastic material, to make easier to recycle.  Moreover, new material "resolution plastic" is now

focused on.  If we say "resolution plastic" more easier, it is a plastic that microorganism eats

in the solid, so the plastic results later.  In fact, the plastic returns to solid. Usual plastics

never changes their shapes forever.  Disintegration plastics  are dissolved as same as plants

and animals, so it is very good for ecology.

Plastic will evolve more and more.  Now plastic has been developing new type. Some

plastics can be eaten, some of them are gone through the electric current. Maybe some

house will be made by plastic in the future.  Also, foods are made by plastic, which can be

saved more than ten years.  These foods will taste good, and good nutrition.  Let's research

for plastic more and more if you have a time. It might be fun to research!

Plastic bag, Vinyl bag

Plastic bottle

Disintegration Plastic bottle

Plastic foods

CD

Tanks in the aquarium

Vitamin

Protein

Mineral

etc.

Acrylic

Normal plastic  is...

Disintegration plas-
tic is...

Microorganism eats
and return to solid!

Still plastic forever...

Ⅳ.

Explanation of Plastic

Ⅳ.

Explanation of Plastic

*MR-9003E  3.7.30 1:47 PM  ページ 34

Summary of Contents for MR-9003E

Page 1: ...1 e f f e f f e 3L e f3 LeJ5 N1 e fN 1e7H 3Le f J5 V X f T Y V Xhe S Y V K hO Y V4 6KeO2 0Y I4 0M O2 6K W20Mg I46X W Mhe I X W Y hfV X 7He 6X N1 J5 e 1 e3L 7H e f eN1 f f e f f e f O2 5 e f f f 1 e f...

Page 2: ...L 7 H O2 6K N 1 J 5 W2 6X 3 L 7 Y O K V X J H N 1 W 5 J L 3 L 7 H W X N 1 J 5 7 1 3 L 7 Y J V X J H 7 L N 1 W 5 1 3 L 7 H N 1 J 5 3 L 7 H V X J 5 N 1 7 Y 3 5 3 L J H N H N 1 W 5 3 L 7 H 3 5 N X J 5 V...

Page 3: ...O T2 U 0M g O2 0M 3Lf W2 0M V X O2 XV M h W2 0M N1fO M V X O2 Y W R 0Yhe O M eO2 0Y N1 W2 Y Y 0Mhf O2 0Y W2 0M 3L O X 0Mhg W2 0M J V X O2 XV M O M O 6K N1 W2 Y W R 0Y O2 0Y O2 0MfI46K 3L O Y U 0M O2 0...

Page 4: ...e3LgN 6X 5 7 eN1g 3 X J H e g N V X I X I X I X I X e I X I X I X I X I X I X I Xe e I X I X I X I X I X I X I X eI X V4 1 7 5e e 3L g V X N1 N1 N1 N1 3L 3L V X N1eV X N1eN1eN1eN1e3Le3L V X N1 V X N1...

Page 5: ...t Nut 3pcs Battery contact for PCB 3pcs The side with the slot 4 Assembly of Controller Assembly of Mechanical Parts e e h h h h h h e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e...

Page 6: ...e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e...

Page 7: ...N1e3Le3L V X N1 V X N1 N1 N1 N1 3L N1 3L L L N1e3Le3Le e N1 N1 N1 3L N1 3L 3L 3L eN1eN1eN1e3LeN1e3Le3Le3Le N1 e N1 3 1 J 1 eN1eN1e3Le3Le e e N1 e N1 N1 N1 3L e e eN1e eN1eN1eN1e3Le3Le3Le3L N 7 e e eN1...

Page 8: ...e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e...

Page 9: ...e7He7He e J5 J5 J5 J5 J5 7HJ H e f g7 W Y O Ye e e e O Y O Y O Y O Y O Y W 5 Le e J5 g Y 3 1e e 7H g 0Y N L 5e g J I40M 3 X YeJ5g 7 5 N 1 0Y W YgJ H 3 L fW H g7 5 V Ke O g J H V 0M gW 5 V h O Y V4 6K...

Page 10: ...W M I4 Kf W 0Y I e W M h O2 6Kh V Le 7 YhW2 0M gI46XhV X J H h7 hfI X g V 1 7 5h J5 hf N1 hN Hh 7Y O2 6Ke h h MhI h L h hf h 3 1 h 3 KO2 6KO 5 h N h V4 YfV 0Y h J he I4 0M he 7 Lhf I4 0M hfJ K O V 6X...

Page 11: ...V4 1 O M eO2 0M I4 6K W 0YeO2 0M I4 6 6X MeO2 0M I4 X I K eW2 0M I X V46X W2 0M V40MI KeI K O M W M V46X V46K O20Y W Y I K I46X W20MeO MI40Y V46K I K O MeO20Y I46X V46Xhg O20Y W20M I KeI K hf O20M O...

Page 12: ...hole Put in small cut up pieces of rubber bands Ping pong table Install fences around the table Goal Goal Make many other creative and fun games and rules How to operate Forward Left rotation Right ro...

Page 13: ...printed circuit board through which the electric current can pass When the switch on the controller is pushed the switch contact inside is also pushed in and makes a path for the electricity to run th...

Page 14: ...I 6K O2 0Y V4 6K O2 0M I4 6K O2 M I4 6K O2 0Y I4 6K O2 0M I4 6K O2 0M I4 6KhO2 0M I4 0M I4 0M O2 6K O2 6K O2 6K O2 6K O2 6K O2 6K W2 6X O K W2 6X W X O K W2 6Xhg W X hf W Xhf W X he W Xhe W X h 7 1 h...

Page 15: ...ted Mold Explanation of Molding Explanation of Molding The robot has many plastic parts for its body and the controller There are many plastic products around you also When you compare the same plasti...

Page 16: ...he gate Melted plastic was poured in here Parting line The part where the molds meet Gate Parting line Explanation of Molding Weld line As explained in the previous pages the molds have the shape exac...

Page 17: ...heating and pressurization and it is removed synthesized synthetic rubber synthetic fiber synthetic leather and called as synthetic resin It sounds like difficult doesn t it Let s explain about plast...

Page 18: ...them by heat and chemicals These could be other products later Recently package of the products show material of plastic to distinguish each material easily Recently a gift box has a printing of plast...

Page 19: ...nd vinyl wire might be cut sometimes PCB solves this problem as well You may hard to find the electric machines that is without a circuit board However circuit board has some electricity to avoid elec...

Page 20: ...er film is that copper made as very flatten and it is the part that let electricity through The board has the copper film only one side is called one sided PCB both side is called double sided PCB bot...

Page 21: ...Hh 7 H g 7 H hfJ 5 h7 5 g J 5 hJ 5hJ 5hf W Y J 5h H g 7 H h7 Hh7 HhfW Y 7 Hg J 5h J 5h J 5 h 5 he W Y J 5 g 7 Hh 7 Hh 7 H g J H heW Y 7 H gJ 5 h J hJ h 7 he W Y J 5h7 H h 7 5 h7 5hJ 5he 7 Y 7 Hg J he...

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